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(c) Microsoft Corporation.\n\nPermission to use, copy, modify, and/or distribute this software for any\npurpose with or without fee is hereby granted.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\nPERFORMANCE OF THIS SOFTWARE.\n***************************************************************************** */\n/* global Reflect, Promise, SuppressedError, Symbol, Iterator */\n\nvar extendStatics = function(d, b) {\n  extendStatics = Object.setPrototypeOf ||\n      ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n      function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\n  return extendStatics(d, b);\n};\n\nexport function __extends(d, b) {\n  if (typeof b !== \"function\" && b !== null)\n      throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\n  extendStatics(d, b);\n  function __() { this.constructor = d; }\n  d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n}\n\nexport var __assign = function() {\n  __assign = Object.assign || function __assign(t) {\n      for (var s, i = 1, n = arguments.length; i < n; i++) {\n          s = arguments[i];\n          for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\n      }\n      return t;\n  }\n  return __assign.apply(this, arguments);\n}\n\nexport function __rest(s, e) {\n  var t = {};\n  for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\n      t[p] = s[p];\n  if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\n      for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\n          if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\n              t[p[i]] = s[p[i]];\n      }\n  return t;\n}\n\nexport function __decorate(decorators, target, key, desc) {\n  var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\n  if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\n  else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\n  return c > 3 && r && Object.defineProperty(target, key, r), r;\n}\n\nexport function __param(paramIndex, decorator) {\n  return function (target, key) { decorator(target, key, paramIndex); }\n}\n\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\n  function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\n  var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\n  var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\n  var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});\n  var _, done = false;\n  for (var i = decorators.length - 1; i >= 0; i--) {\n      var context = {};\n      for (var p in contextIn) context[p] = p === \"access\" ? {} : contextIn[p];\n      for (var p in contextIn.access) context.access[p] = contextIn.access[p];\n      context.addInitializer = function (f) { if (done) throw new TypeError(\"Cannot add initializers after decoration has completed\"); extraInitializers.push(accept(f || null)); };\n      var result = (0, decorators[i])(kind === \"accessor\" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);\n      if (kind === \"accessor\") {\n          if (result === void 0) continue;\n          if (result === null || typeof result !== \"object\") throw new TypeError(\"Object expected\");\n          if (_ = accept(result.get)) descriptor.get = _;\n          if (_ = accept(result.set)) descriptor.set = _;\n          if (_ = accept(result.init)) initializers.unshift(_);\n      }\n      else if (_ = accept(result)) {\n          if (kind === \"field\") initializers.unshift(_);\n          else descriptor[key] = _;\n      }\n  }\n  if (target) Object.defineProperty(target, contextIn.name, descriptor);\n  done = true;\n};\n\nexport function __runInitializers(thisArg, initializers, value) {\n  var useValue = arguments.length > 2;\n  for (var i = 0; i < initializers.length; i++) {\n      value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);\n  }\n  return useValue ? value : void 0;\n};\n\nexport function __propKey(x) {\n  return typeof x === \"symbol\" ? x : \"\".concat(x);\n};\n\nexport function __setFunctionName(f, name, prefix) {\n  if (typeof name === \"symbol\") name = name.description ? \"[\".concat(name.description, \"]\") : \"\";\n  return Object.defineProperty(f, \"name\", { configurable: true, value: prefix ? \"\".concat(prefix, \" \", name) : name });\n};\n\nexport function __metadata(metadataKey, metadataValue) {\n  if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\n}\n\nexport function __awaiter(thisArg, _arguments, P, generator) {\n  function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\n  return new (P || (P = Promise))(function (resolve, reject) {\n      function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\n      function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\n      function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\n      step((generator = generator.apply(thisArg, _arguments || [])).next());\n  });\n}\n\nexport function __generator(thisArg, body) {\n  var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g = Object.create((typeof Iterator === \"function\" ? Iterator : Object).prototype);\n  return g.next = verb(0), g[\"throw\"] = verb(1), g[\"return\"] = verb(2), typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\n  function verb(n) { return function (v) { return step([n, v]); }; }\n  function step(op) {\n      if (f) throw new TypeError(\"Generator is already executing.\");\n      while (g && (g = 0, op[0] && (_ = 0)), _) try {\n          if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\n          if (y = 0, t) op = [op[0] & 2, t.value];\n          switch (op[0]) {\n              case 0: case 1: t = op; break;\n              case 4: _.label++; return { value: op[1], done: false };\n              case 5: _.label++; y = op[1]; op = [0]; continue;\n              case 7: op = _.ops.pop(); _.trys.pop(); continue;\n              default:\n                  if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\n                  if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\n                  if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\n                  if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\n                  if (t[2]) _.ops.pop();\n                  _.trys.pop(); continue;\n          }\n          op = body.call(thisArg, _);\n      } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\n      if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\n  }\n}\n\nexport var __createBinding = Object.create ? (function(o, m, k, k2) {\n  if (k2 === undefined) k2 = k;\n  var desc = Object.getOwnPropertyDescriptor(m, k);\n  if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\n      desc = { enumerable: true, get: function() { return m[k]; } };\n  }\n  Object.defineProperty(o, k2, desc);\n}) : (function(o, m, k, k2) {\n  if (k2 === undefined) k2 = k;\n  o[k2] = m[k];\n});\n\nexport function __exportStar(m, o) {\n  for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\n}\n\nexport function __values(o) {\n  var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\n  if (m) return m.call(o);\n  if (o && typeof o.length === \"number\") return {\n      next: function () {\n          if (o && i >= o.length) o = void 0;\n          return { value: o && o[i++], done: !o };\n      }\n  };\n  throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\n}\n\nexport function __read(o, n) {\n  var m = typeof Symbol === \"function\" && o[Symbol.iterator];\n  if (!m) return o;\n  var i = m.call(o), r, ar = [], e;\n  try {\n      while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\n  }\n  catch (error) { e = { error: error }; }\n  finally {\n      try {\n          if (r && !r.done && (m = i[\"return\"])) m.call(i);\n      }\n      finally { if (e) throw e.error; }\n  }\n  return ar;\n}\n\n/** @deprecated */\nexport function __spread() {\n  for (var ar = [], i = 0; i < arguments.length; i++)\n      ar = ar.concat(__read(arguments[i]));\n  return ar;\n}\n\n/** @deprecated */\nexport function __spreadArrays() {\n  for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\n  for (var r = Array(s), k = 0, i = 0; i < il; i++)\n      for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\n          r[k] = a[j];\n  return r;\n}\n\nexport function __spreadArray(to, from, pack) {\n  if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\n      if (ar || !(i in from)) {\n          if (!ar) ar = Array.prototype.slice.call(from, 0, i);\n          ar[i] = from[i];\n      }\n  }\n  return to.concat(ar || Array.prototype.slice.call(from));\n}\n\nexport function __await(v) {\n  return this instanceof __await ? (this.v = v, this) : new __await(v);\n}\n\nexport function __asyncGenerator(thisArg, _arguments, generator) {\n  if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n  var g = generator.apply(thisArg, _arguments || []), i, q = [];\n  return i = Object.create((typeof AsyncIterator === \"function\" ? AsyncIterator : Object).prototype), verb(\"next\"), verb(\"throw\"), verb(\"return\", awaitReturn), i[Symbol.asyncIterator] = function () { return this; }, i;\n  function awaitReturn(f) { return function (v) { return Promise.resolve(v).then(f, reject); }; }\n  function verb(n, f) { if (g[n]) { i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; if (f) i[n] = f(i[n]); } }\n  function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\n  function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\n  function fulfill(value) { resume(\"next\", value); }\n  function reject(value) { resume(\"throw\", value); }\n  function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\n}\n\nexport function __asyncDelegator(o) {\n  var i, p;\n  return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\n  function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\n}\n\nexport function __asyncValues(o) {\n  if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n  var m = o[Symbol.asyncIterator], i;\n  return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\n  function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\n  function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\n}\n\nexport function __makeTemplateObject(cooked, raw) {\n  if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\n  return cooked;\n};\n\nvar __setModuleDefault = Object.create ? (function(o, v) {\n  Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n  o[\"default\"] = v;\n};\n\nvar ownKeys = function(o) {\n  ownKeys = Object.getOwnPropertyNames || function (o) {\n    var ar = [];\n    for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;\n    return ar;\n  };\n  return ownKeys(o);\n};\n\nexport function __importStar(mod) {\n  if (mod && mod.__esModule) return mod;\n  var result = {};\n  if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== \"default\") __createBinding(result, mod, k[i]);\n  __setModuleDefault(result, mod);\n  return result;\n}\n\nexport function __importDefault(mod) {\n  return (mod && mod.__esModule) ? mod : { default: mod };\n}\n\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\n  if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\n  if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\n  return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\n}\n\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\n  if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\n  if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\n  if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\n  return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\n}\n\nexport function __classPrivateFieldIn(state, receiver) {\n  if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\n  return typeof state === \"function\" ? receiver === state : state.has(receiver);\n}\n\nexport function __addDisposableResource(env, value, async) {\n  if (value !== null && value !== void 0) {\n    if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\n    var dispose, inner;\n    if (async) {\n      if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\n      dispose = value[Symbol.asyncDispose];\n    }\n    if (dispose === void 0) {\n      if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\n      dispose = value[Symbol.dispose];\n      if (async) inner = dispose;\n    }\n    if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\n    if (inner) dispose = function() { try { inner.call(this); } catch (e) { return Promise.reject(e); } };\n    env.stack.push({ value: value, dispose: dispose, async: async });\n  }\n  else if (async) {\n    env.stack.push({ async: true });\n  }\n  return value;\n}\n\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\n  var e = new Error(message);\n  return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\n};\n\nexport function __disposeResources(env) {\n  function fail(e) {\n    env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\n    env.hasError = true;\n  }\n  var r, s = 0;\n  function next() {\n    while (r = env.stack.pop()) {\n      try {\n        if (!r.async && s === 1) return s = 0, env.stack.push(r), Promise.resolve().then(next);\n        if (r.dispose) {\n          var result = r.dispose.call(r.value);\n          if (r.async) return s |= 2, Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\n        }\n        else s |= 1;\n      }\n      catch (e) {\n        fail(e);\n      }\n    }\n    if (s === 1) return env.hasError ? Promise.reject(env.error) : Promise.resolve();\n    if (env.hasError) throw env.error;\n  }\n  return next();\n}\n\nexport function __rewriteRelativeImportExtension(path, preserveJsx) {\n  if (typeof path === \"string\" && /^\\.\\.?\\//.test(path)) {\n      return path.replace(/\\.(tsx)$|((?:\\.d)?)((?:\\.[^./]+?)?)\\.([cm]?)ts$/i, function (m, tsx, d, ext, cm) {\n          return tsx ? preserveJsx ? \".jsx\" : \".js\" : d && (!ext || !cm) ? m : (d + ext + \".\" + cm.toLowerCase() + \"js\");\n      });\n  }\n  return path;\n}\n\nexport default {\n  __extends,\n  __assign,\n  __rest,\n  __decorate,\n  __param,\n  __esDecorate,\n  __runInitializers,\n  __propKey,\n  __setFunctionName,\n  __metadata,\n  __awaiter,\n  __generator,\n  __createBinding,\n  __exportStar,\n  __values,\n  __read,\n  __spread,\n  __spreadArrays,\n  __spreadArray,\n  __await,\n  __asyncGenerator,\n  __asyncDelegator,\n  __asyncValues,\n  __makeTemplateObject,\n  __importStar,\n  __importDefault,\n  __classPrivateFieldGet,\n  __classPrivateFieldSet,\n  __classPrivateFieldIn,\n  __addDisposableResource,\n  __disposeResources,\n  __rewriteRelativeImportExtension,\n};\n","import { Observable } from '../Observable';\nimport { isArray } from '../util/isArray';\nimport { isFunction } from '../util/isFunction';\nimport { map } from '../operators/map';\nexport function fromEventPattern(addHandler, removeHandler, resultSelector) {\n    if (resultSelector) {\n        return fromEventPattern(addHandler, removeHandler).pipe(map(args => isArray(args) ? resultSelector(...args) : resultSelector(args)));\n    }\n    return new Observable(subscriber => {\n        const handler = (...e) => subscriber.next(e.length === 1 ? e[0] : e);\n        let retValue;\n        try {\n            retValue = addHandler(handler);\n        }\n        catch (err) {\n            subscriber.error(err);\n            return undefined;\n        }\n        if (!isFunction(removeHandler)) {\n            return undefined;\n        }\n        return () => removeHandler(handler, retValue);\n    });\n}\n","import { QueueAction } from './QueueAction';\nimport { QueueScheduler } from './QueueScheduler';\nexport const queueScheduler = new QueueScheduler(QueueAction);\nexport const queue = queueScheduler;\n","import { AsyncScheduler } from './AsyncScheduler';\nexport class QueueScheduler extends AsyncScheduler {\n}\n","import { AsyncAction } from './AsyncAction';\nexport class QueueAction extends AsyncAction {\n    constructor(scheduler, work) {\n        super(scheduler, work);\n        this.scheduler = scheduler;\n        this.work = work;\n    }\n    schedule(state, delay = 0) {\n        if (delay > 0) {\n            return super.schedule(state, delay);\n        }\n        this.delay = delay;\n        this.state = state;\n        this.scheduler.flush(this);\n        return this;\n    }\n    execute(state, delay) {\n        return (delay > 0 || this.closed) ?\n            super.execute(state, delay) :\n            this._execute(state, delay);\n    }\n    requestAsyncId(scheduler, id, delay = 0) {\n        if ((delay !== null && delay > 0) || (delay === null && this.delay > 0)) {\n            return super.requestAsyncId(scheduler, id, delay);\n        }\n        return scheduler.flush(this);\n    }\n}\n","import { empty } from './observable/empty';\nimport { of } from './observable/of';\nimport { throwError } from './observable/throwError';\nexport var NotificationKind;\n(function (NotificationKind) {\n    NotificationKind[\"NEXT\"] = \"N\";\n    NotificationKind[\"ERROR\"] = \"E\";\n    NotificationKind[\"COMPLETE\"] = \"C\";\n})(NotificationKind || (NotificationKind = {}));\nexport class Notification {\n    constructor(kind, value, error) {\n        this.kind = kind;\n        this.value = value;\n        this.error = error;\n        this.hasValue = kind === 'N';\n    }\n    observe(observer) {\n        switch (this.kind) {\n            case 'N':\n                return observer.next && observer.next(this.value);\n            case 'E':\n                return observer.error && observer.error(this.error);\n            case 'C':\n                return observer.complete && observer.complete();\n        }\n    }\n    do(next, error, complete) {\n        const kind = this.kind;\n        switch (kind) {\n            case 'N':\n                return next && next(this.value);\n            case 'E':\n                return error && error(this.error);\n            case 'C':\n                return complete && complete();\n        }\n    }\n    accept(nextOrObserver, error, complete) {\n        if (nextOrObserver && typeof nextOrObserver.next === 'function') {\n            return this.observe(nextOrObserver);\n        }\n        else {\n            return this.do(nextOrObserver, error, complete);\n        }\n    }\n    toObservable() {\n        const kind = this.kind;\n        switch (kind) {\n            case 'N':\n                return of(this.value);\n            case 'E':\n                return throwError(this.error);\n            case 'C':\n                return empty();\n        }\n        throw new Error('unexpected notification kind value');\n    }\n    static createNext(value) {\n        if (typeof value !== 'undefined') {\n            return new Notification('N', value);\n        }\n        return Notification.undefinedValueNotification;\n    }\n    static createError(err) {\n        return new Notification('E', undefined, err);\n    }\n    static createComplete() {\n        return Notification.completeNotification;\n    }\n}\nNotification.completeNotification = new Notification('C');\nNotification.undefinedValueNotification = new Notification('N', undefined);\n","import { Subscriber } from '../Subscriber';\nimport { Notification } from '../Notification';\nexport function observeOn(scheduler, delay = 0) {\n    return function observeOnOperatorFunction(source) {\n        return source.lift(new ObserveOnOperator(scheduler, delay));\n    };\n}\nexport class ObserveOnOperator {\n    constructor(scheduler, delay = 0) {\n        this.scheduler = scheduler;\n        this.delay = delay;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new ObserveOnSubscriber(subscriber, this.scheduler, this.delay));\n    }\n}\nexport class ObserveOnSubscriber extends Subscriber {\n    constructor(destination, scheduler, delay = 0) {\n        super(destination);\n        this.scheduler = scheduler;\n        this.delay = delay;\n    }\n    static dispatch(arg) {\n        const { notification, destination } = arg;\n        notification.observe(destination);\n        this.unsubscribe();\n    }\n    scheduleMessage(notification) {\n        const destination = this.destination;\n        destination.add(this.scheduler.schedule(ObserveOnSubscriber.dispatch, this.delay, new ObserveOnMessage(notification, this.destination)));\n    }\n    _next(value) {\n        this.scheduleMessage(Notification.createNext(value));\n    }\n    _error(err) {\n        this.scheduleMessage(Notification.createError(err));\n        this.unsubscribe();\n    }\n    _complete() {\n        this.scheduleMessage(Notification.createComplete());\n        this.unsubscribe();\n    }\n}\nexport class ObserveOnMessage {\n    constructor(notification, destination) {\n        this.notification = notification;\n        this.destination = destination;\n    }\n}\n","import { Subject } from './Subject';\nimport { queue } from './scheduler/queue';\nimport { Subscription } from './Subscription';\nimport { ObserveOnSubscriber } from './operators/observeOn';\nimport { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError';\nimport { SubjectSubscription } from './SubjectSubscription';\nexport class ReplaySubject extends Subject {\n    constructor(bufferSize = Number.POSITIVE_INFINITY, windowTime = Number.POSITIVE_INFINITY, scheduler) {\n        super();\n        this.scheduler = scheduler;\n        this._events = [];\n        this._infiniteTimeWindow = false;\n        this._bufferSize = bufferSize < 1 ? 1 : bufferSize;\n        this._windowTime = windowTime < 1 ? 1 : windowTime;\n        if (windowTime === Number.POSITIVE_INFINITY) {\n            this._infiniteTimeWindow = true;\n            this.next = this.nextInfiniteTimeWindow;\n        }\n        else {\n            this.next = this.nextTimeWindow;\n        }\n    }\n    nextInfiniteTimeWindow(value) {\n        if (!this.isStopped) {\n            const _events = this._events;\n            _events.push(value);\n            if (_events.length > this._bufferSize) {\n                _events.shift();\n            }\n        }\n        super.next(value);\n    }\n    nextTimeWindow(value) {\n        if (!this.isStopped) {\n            this._events.push(new ReplayEvent(this._getNow(), value));\n            this._trimBufferThenGetEvents();\n        }\n        super.next(value);\n    }\n    _subscribe(subscriber) {\n        const _infiniteTimeWindow = this._infiniteTimeWindow;\n        const _events = _infiniteTimeWindow ? this._events : this._trimBufferThenGetEvents();\n        const scheduler = this.scheduler;\n        const len = _events.length;\n        let subscription;\n        if (this.closed) {\n            throw new ObjectUnsubscribedError();\n        }\n        else if (this.isStopped || this.hasError) {\n            subscription = Subscription.EMPTY;\n        }\n        else {\n            this.observers.push(subscriber);\n            subscription = new SubjectSubscription(this, subscriber);\n        }\n        if (scheduler) {\n            subscriber.add(subscriber = new ObserveOnSubscriber(subscriber, scheduler));\n        }\n        if (_infiniteTimeWindow) {\n            for (let i = 0; i < len && !subscriber.closed; i++) {\n                subscriber.next(_events[i]);\n            }\n        }\n        else {\n            for (let i = 0; i < len && !subscriber.closed; i++) {\n                subscriber.next(_events[i].value);\n            }\n        }\n        if (this.hasError) {\n            subscriber.error(this.thrownError);\n        }\n        else if (this.isStopped) {\n            subscriber.complete();\n        }\n        return subscription;\n    }\n    _getNow() {\n        return (this.scheduler || queue).now();\n    }\n    _trimBufferThenGetEvents() {\n        const now = this._getNow();\n        const _bufferSize = this._bufferSize;\n        const _windowTime = this._windowTime;\n        const _events = this._events;\n        const eventsCount = _events.length;\n        let spliceCount = 0;\n        while (spliceCount < eventsCount) {\n            if ((now - _events[spliceCount].time) < _windowTime) {\n                break;\n            }\n            spliceCount++;\n        }\n        if (eventsCount > _bufferSize) {\n            spliceCount = Math.max(spliceCount, eventsCount - _bufferSize);\n        }\n        if (spliceCount > 0) {\n            _events.splice(0, spliceCount);\n        }\n        return _events;\n    }\n}\nclass ReplayEvent {\n    constructor(time, value) {\n        this.time = time;\n        this.value = value;\n    }\n}\n","import { SimpleOuterSubscriber, innerSubscribe, SimpleInnerSubscriber } from '../innerSubscribe';\nexport function sample(notifier) {\n    return (source) => source.lift(new SampleOperator(notifier));\n}\nclass SampleOperator {\n    constructor(notifier) {\n        this.notifier = notifier;\n    }\n    call(subscriber, source) {\n        const sampleSubscriber = new SampleSubscriber(subscriber);\n        const subscription = source.subscribe(sampleSubscriber);\n        subscription.add(innerSubscribe(this.notifier, new SimpleInnerSubscriber(sampleSubscriber)));\n        return subscription;\n    }\n}\nclass SampleSubscriber extends SimpleOuterSubscriber {\n    constructor() {\n        super(...arguments);\n        this.hasValue = false;\n    }\n    _next(value) {\n        this.value = value;\n        this.hasValue = true;\n    }\n    notifyNext() {\n        this.emitValue();\n    }\n    notifyComplete() {\n        this.emitValue();\n    }\n    emitValue() {\n        if (this.hasValue) {\n            this.hasValue = false;\n            this.destination.next(this.value);\n        }\n    }\n}\n","import { __awaiter } from 'tslib';\nimport { Injectable, NgZone, ɵɵdefineInjectable, ɵɵinject, InjectionToken, Optional, Inject, LOCALE_ID, Directive, Input, EventEmitter, Output, Self, Component, ElementRef, PLATFORM_ID, ContentChildren, QueryList, forwardRef, NgModule } from '@angular/core';\nimport { Observable, BehaviorSubject, from, timer, ReplaySubject, bindCallback, of, throwError, fromEventPattern, merge, Subject } from 'rxjs';\nimport { flatMap, sample, switchMap, map, shareReplay, multicast, startWith, skip, distinctUntilChanged, takeUntil } from 'rxjs/operators';\nimport { isPlatformServer } from '@angular/common';\n\nimport * as ɵngcc0 from '@angular/core';\n\nconst _c0 = [\"*\"];\nclass MapsAPILoader {\n}\nMapsAPILoader.ɵfac = function MapsAPILoader_Factory(t) { return new (t || MapsAPILoader)(); };\nMapsAPILoader.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: MapsAPILoader, factory: MapsAPILoader.ɵfac });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(MapsAPILoader, [{\n        type: Injectable\n    }], null, null); })();\n\n/**\n * Wrapper class that handles the communication with the Google Maps Javascript\n * API v3\n */\nclass GoogleMapsAPIWrapper {\n    constructor(_loader, _zone) {\n        this._loader = _loader;\n        this._zone = _zone;\n        this._map =\n            new Promise((resolve) => { this._mapResolver = resolve; });\n    }\n    createMap(el, mapOptions) {\n        return this._zone.runOutsideAngular(() => {\n            return this._loader.load().then(() => {\n                const map = new google.maps.Map(el, mapOptions);\n                this._mapResolver(map);\n                return;\n            });\n        });\n    }\n    setMapOptions(options) {\n        return this._zone.runOutsideAngular(() => {\n            this._map.then((m) => { m.setOptions(options); });\n        });\n    }\n    /**\n     * Creates a google map marker with the map context\n     */\n    createMarker(options = {}, addToMap = true) {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then((map) => {\n                if (addToMap) {\n                    options.map = map;\n                }\n                return new google.maps.Marker(options);\n            });\n        });\n    }\n    createInfoWindow(options) {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then(() => new google.maps.InfoWindow(options));\n        });\n    }\n    /**\n     * Creates a google.map.Circle for the current map.\n     */\n    createCircle(options) {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then((map) => {\n                options.map = map;\n                return new google.maps.Circle(options);\n            });\n        });\n    }\n    /**\n     * Creates a google.map.Rectangle for the current map.\n     */\n    createRectangle(options) {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then((map) => {\n                options.map = map;\n                return new google.maps.Rectangle(options);\n            });\n        });\n    }\n    createPolyline(options) {\n        return this._zone.runOutsideAngular(() => {\n            return this.getNativeMap().then((map) => {\n                const line = new google.maps.Polyline(options);\n                line.setMap(map);\n                return line;\n            });\n        });\n    }\n    createPolygon(options) {\n        return this._zone.runOutsideAngular(() => {\n            return this.getNativeMap().then((map) => {\n                const polygon = new google.maps.Polygon(options);\n                polygon.setMap(map);\n                return polygon;\n            });\n        });\n    }\n    /**\n     * Creates a new google.map.Data layer for the current map\n     */\n    createDataLayer(options) {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then(m => {\n                const data = new google.maps.Data(options);\n                data.setMap(m);\n                return data;\n            });\n        });\n    }\n    /**\n     * Creates a TransitLayer instance for a map\n     * @returns a new transit layer object\n     */\n    createTransitLayer() {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then((map) => {\n                const newLayer = new google.maps.TransitLayer();\n                newLayer.setMap(map);\n                return newLayer;\n            });\n        });\n    }\n    /**\n     * Creates a BicyclingLayer instance for a map\n     * @returns a new bicycling layer object\n     */\n    createBicyclingLayer() {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then((map) => {\n                const newLayer = new google.maps.BicyclingLayer();\n                newLayer.setMap(map);\n                return newLayer;\n            });\n        });\n    }\n    /**\n     * Determines if given coordinates are insite a Polygon path.\n     */\n    containsLocation(latLng, polygon) {\n        return this._map.then(() => google.maps.geometry.poly.containsLocation(latLng, polygon));\n    }\n    subscribeToMapEvent(eventName) {\n        return new Observable((observer) => {\n            this._map.then(m => m.addListener(eventName, () => this._zone.run(() => observer.next(arguments[0]))));\n        });\n    }\n    clearInstanceListeners() {\n        return this._zone.runOutsideAngular(() => {\n            this._map.then((map) => {\n                google.maps.event.clearInstanceListeners(map);\n            });\n        });\n    }\n    setCenter(latLng) {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then((map) => map.setCenter(latLng));\n        });\n    }\n    getZoom() {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then((map) => map.getZoom());\n        });\n    }\n    getBounds() {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then((map) => map.getBounds());\n        });\n    }\n    getMapTypeId() {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then((map) => map.getMapTypeId());\n        });\n    }\n    setZoom(zoom) {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then((map) => map.setZoom(zoom));\n        });\n    }\n    getCenter() {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then((map) => map.getCenter());\n        });\n    }\n    panTo(latLng) {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then((map) => map.panTo(latLng));\n        });\n    }\n    panBy(x, y) {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then((map) => map.panBy(x, y));\n        });\n    }\n    fitBounds(latLng, padding) {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then((map) => map.fitBounds(latLng, padding));\n        });\n    }\n    panToBounds(latLng, padding) {\n        return this._zone.runOutsideAngular(() => {\n            return this._map.then((map) => map.panToBounds(latLng, padding));\n        });\n    }\n    /**\n     * Returns the native Google Maps Map instance. Be careful when using this instance directly.\n     */\n    getNativeMap() { return this._map; }\n    /**\n     * Triggers the given event name on the map instance.\n     */\n    triggerMapEvent(eventName) {\n        return this._map.then((m) => google.maps.event.trigger(m, eventName));\n    }\n}\nGoogleMapsAPIWrapper.ɵfac = function GoogleMapsAPIWrapper_Factory(t) { return new (t || GoogleMapsAPIWrapper)(ɵngcc0.ɵɵinject(MapsAPILoader), ɵngcc0.ɵɵinject(ɵngcc0.NgZone)); };\nGoogleMapsAPIWrapper.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: GoogleMapsAPIWrapper, factory: GoogleMapsAPIWrapper.ɵfac });\nGoogleMapsAPIWrapper.ctorParameters = () => [\n    { type: MapsAPILoader },\n    { type: NgZone }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(GoogleMapsAPIWrapper, [{\n        type: Injectable\n    }], function () { return [{ type: MapsAPILoader }, { type: ɵngcc0.NgZone }]; }, null); })();\n\nclass CircleManager {\n    constructor(_apiWrapper, _zone) {\n        this._apiWrapper = _apiWrapper;\n        this._zone = _zone;\n        this._circles = new Map();\n    }\n    addCircle(circle) {\n        this._apiWrapper.getNativeMap().then(() => this._circles.set(circle, this._apiWrapper.createCircle({\n            center: { lat: circle.latitude, lng: circle.longitude },\n            clickable: circle.clickable,\n            draggable: circle.draggable,\n            editable: circle.editable,\n            fillColor: circle.fillColor,\n            fillOpacity: circle.fillOpacity,\n            radius: circle.radius,\n            strokeColor: circle.strokeColor,\n            strokeOpacity: circle.strokeOpacity,\n            strokePosition: google.maps.StrokePosition[circle.strokePosition],\n            strokeWeight: circle.strokeWeight,\n            visible: circle.visible,\n            zIndex: circle.zIndex,\n        })));\n    }\n    /**\n     * Removes the given circle from the map.\n     */\n    removeCircle(circle) {\n        return this._circles.get(circle).then((c) => {\n            c.setMap(null);\n            this._circles.delete(circle);\n        });\n    }\n    setOptions(circle, options) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return this._circles.get(circle).then((c) => {\n                const actualParam = options.strokePosition;\n                options.strokePosition = google.maps.StrokePosition[actualParam];\n                c.setOptions(options);\n            });\n        });\n    }\n    getBounds(circle) {\n        return this._circles.get(circle).then((c) => c.getBounds());\n    }\n    getCenter(circle) {\n        return this._circles.get(circle).then((c) => c.getCenter());\n    }\n    getRadius(circle) {\n        return this._circles.get(circle).then((c) => c.getRadius());\n    }\n    setCenter(circle) {\n        return this._circles.get(circle).then(c => c.setCenter({ lat: circle.latitude, lng: circle.longitude }));\n    }\n    setEditable(circle) {\n        return this._circles.get(circle).then(c => c.setEditable(circle.editable));\n    }\n    setDraggable(circle) {\n        return this._circles.get(circle).then(c => c.setDraggable(circle.draggable));\n    }\n    setVisible(circle) {\n        return this._circles.get(circle).then(c => c.setVisible(circle.visible));\n    }\n    setRadius(circle) {\n        return this._circles.get(circle).then(c => c.setRadius(circle.radius));\n    }\n    getNativeCircle(circle) {\n        return this._circles.get(circle);\n    }\n    createEventObservable(eventName, circle) {\n        return new Observable((observer) => {\n            let listener = null;\n            this._circles.get(circle).then((c) => {\n                listener = c.addListener(eventName, (e) => this._zone.run(() => observer.next(e)));\n            });\n            return () => {\n                if (listener !== null) {\n                    listener.remove();\n                }\n            };\n        });\n    }\n}\nCircleManager.ɵfac = function CircleManager_Factory(t) { return new (t || CircleManager)(ɵngcc0.ɵɵinject(GoogleMapsAPIWrapper), ɵngcc0.ɵɵinject(ɵngcc0.NgZone)); };\nCircleManager.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: CircleManager, factory: CircleManager.ɵfac });\nCircleManager.ctorParameters = () => [\n    { type: GoogleMapsAPIWrapper },\n    { type: NgZone }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(CircleManager, [{\n        type: Injectable\n    }], function () { return [{ type: GoogleMapsAPIWrapper }, { type: ɵngcc0.NgZone }]; }, null); })();\n\n/**\n * Manages all Data Layers for a Google Map instance.\n */\nclass DataLayerManager {\n    constructor(_wrapper, _zone) {\n        this._wrapper = _wrapper;\n        this._zone = _zone;\n        this._layers = new Map();\n    }\n    /**\n     * Adds a new Data Layer to the map.\n     */\n    addDataLayer(layer) {\n        const newLayer = this._wrapper.createDataLayer({\n            style: layer.style,\n        })\n            .then(d => {\n            if (layer.geoJson) {\n                // NOTE: accessing \"features\" on google.maps.Data is undocumented\n                this.getDataFeatures(d, layer.geoJson).then(features => d.features = features);\n            }\n            return d;\n        });\n        this._layers.set(layer, newLayer);\n    }\n    deleteDataLayer(layer) {\n        this._layers.get(layer).then(l => {\n            l.setMap(null);\n            this._layers.delete(layer);\n        });\n    }\n    updateGeoJson(layer, geoJson) {\n        this._layers.get(layer).then(l => {\n            l.forEach(feature => {\n                l.remove(feature);\n                // NOTE: accessing \"features\" on google.maps.Data is undocumented\n                const index = l.features.indexOf(feature, 0);\n                if (index > -1) {\n                    l.features.splice(index, 1);\n                }\n            });\n            this.getDataFeatures(l, geoJson).then(features => l.features = features);\n        });\n    }\n    setDataOptions(layer, options) {\n        this._layers.get(layer).then(l => {\n            l.setControlPosition(options.controlPosition);\n            l.setControls(options.controls);\n            l.setDrawingMode(options.drawingMode);\n            l.setStyle(options.style);\n        });\n    }\n    /**\n     * Creates a Google Maps event listener for the given DataLayer as an Observable\n     */\n    createEventObservable(eventName, layer) {\n        return new Observable((observer) => {\n            this._layers.get(layer).then((d) => {\n                d.addListener(eventName, (e) => this._zone.run(() => observer.next(e)));\n            });\n        });\n    }\n    /**\n     * Extract features from a geoJson using google.maps Data Class\n     * @param d : google.maps.Data class instance\n     * @param geoJson : url or geojson object\n     */\n    getDataFeatures(d, geoJson) {\n        return new Promise((resolve, reject) => {\n            if (typeof geoJson === 'object') {\n                try {\n                    const features = d.addGeoJson(geoJson);\n                    resolve(features);\n                }\n                catch (e) {\n                    reject(e);\n                }\n            }\n            else if (typeof geoJson === 'string') {\n                d.loadGeoJson(geoJson, null, resolve);\n            }\n            else {\n                reject(`Impossible to extract features from geoJson: wrong argument type`);\n            }\n        });\n    }\n}\nDataLayerManager.ɵfac = function DataLayerManager_Factory(t) { return new (t || DataLayerManager)(ɵngcc0.ɵɵinject(GoogleMapsAPIWrapper), ɵngcc0.ɵɵinject(ɵngcc0.NgZone)); };\nDataLayerManager.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: DataLayerManager, factory: DataLayerManager.ɵfac });\nDataLayerManager.ctorParameters = () => [\n    { type: GoogleMapsAPIWrapper },\n    { type: NgZone }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(DataLayerManager, [{\n        type: Injectable\n    }], function () { return [{ type: GoogleMapsAPIWrapper }, { type: ɵngcc0.NgZone }]; }, null); })();\n\n/**\n * Class to implement when you what to be able to make it work with the auto fit bounds feature\n * of AGM.\n */\nclass FitBoundsAccessor {\n}\n/**\n * The FitBoundsService is responsible for computing the bounds of the a single map.\n */\nclass FitBoundsService {\n    constructor(loader) {\n        this._boundsChangeSampleTime$ = new BehaviorSubject(200);\n        this._includeInBounds$ = new BehaviorSubject(new Map());\n        this.bounds$ = from(loader.load()).pipe(flatMap(() => this._includeInBounds$), sample(this._boundsChangeSampleTime$.pipe(switchMap(time => timer(0, time)))), map(includeInBounds => this._generateBounds(includeInBounds)), shareReplay(1));\n    }\n    _generateBounds(includeInBounds) {\n        const bounds = new google.maps.LatLngBounds();\n        includeInBounds.forEach(b => bounds.extend(b));\n        return bounds;\n    }\n    addToBounds(latLng) {\n        const id = this._createIdentifier(latLng);\n        if (this._includeInBounds$.value.has(id)) {\n            return;\n        }\n        const boundsMap = this._includeInBounds$.value;\n        boundsMap.set(id, latLng);\n        this._includeInBounds$.next(boundsMap);\n    }\n    removeFromBounds(latLng) {\n        const boundsMap = this._includeInBounds$.value;\n        boundsMap.delete(this._createIdentifier(latLng));\n        this._includeInBounds$.next(boundsMap);\n    }\n    changeFitBoundsChangeSampleTime(timeMs) {\n        this._boundsChangeSampleTime$.next(timeMs);\n    }\n    getBounds$() {\n        return this.bounds$;\n    }\n    _createIdentifier(latLng) {\n        return `${latLng.lat}+${latLng.lng}`;\n    }\n}\nFitBoundsService.ɵfac = function FitBoundsService_Factory(t) { return new (t || FitBoundsService)(ɵngcc0.ɵɵinject(MapsAPILoader)); };\nFitBoundsService.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: FitBoundsService, factory: FitBoundsService.ɵfac });\nFitBoundsService.ctorParameters = () => [\n    { type: MapsAPILoader }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(FitBoundsService, [{\n        type: Injectable\n    }], function () { return [{ type: MapsAPILoader }]; }, null); })();\n\nclass AgmGeocoder {\n    constructor(loader) {\n        const connectableGeocoder$ = new Observable(subscriber => {\n            loader.load().then(() => subscriber.next());\n        })\n            .pipe(map(() => this._createGeocoder()), multicast(new ReplaySubject(1)));\n        connectableGeocoder$.connect(); // ignore the subscription\n        // since we will remain subscribed till application exits\n        this.geocoder$ = connectableGeocoder$;\n    }\n    geocode(request) {\n        return this.geocoder$.pipe(switchMap((geocoder) => this._getGoogleResults(geocoder, request)));\n    }\n    _getGoogleResults(geocoder, request) {\n        const geocodeObservable = bindCallback(geocoder.geocode);\n        return geocodeObservable(request).pipe(switchMap(([results, status]) => {\n            if (status === google.maps.GeocoderStatus.OK) {\n                return of(results);\n            }\n            return throwError(status);\n        }));\n    }\n    _createGeocoder() {\n        return new google.maps.Geocoder();\n    }\n}\nAgmGeocoder.ɵfac = function AgmGeocoder_Factory(t) { return new (t || AgmGeocoder)(ɵngcc0.ɵɵinject(MapsAPILoader)); };\nAgmGeocoder.ɵprov = ɵɵdefineInjectable({ factory: function AgmGeocoder_Factory() { return new AgmGeocoder(ɵɵinject(MapsAPILoader)); }, token: AgmGeocoder, providedIn: \"root\" });\nAgmGeocoder.ctorParameters = () => [\n    { type: MapsAPILoader }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmGeocoder, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: MapsAPILoader }]; }, null); })();\n\nclass WindowRef {\n    getNativeWindow() { return window; }\n}\nclass DocumentRef {\n    getNativeDocument() { return document; }\n}\nconst BROWSER_GLOBALS_PROVIDERS = [WindowRef, DocumentRef];\n\nvar GoogleMapsScriptProtocol;\n(function (GoogleMapsScriptProtocol) {\n    GoogleMapsScriptProtocol[GoogleMapsScriptProtocol[\"HTTP\"] = 1] = \"HTTP\";\n    GoogleMapsScriptProtocol[GoogleMapsScriptProtocol[\"HTTPS\"] = 2] = \"HTTPS\";\n    GoogleMapsScriptProtocol[GoogleMapsScriptProtocol[\"AUTO\"] = 3] = \"AUTO\";\n})(GoogleMapsScriptProtocol || (GoogleMapsScriptProtocol = {}));\n/**\n * Token for the config of the LazyMapsAPILoader. Please provide an object of type {@link\n * LazyMapsAPILoaderConfig}.\n */\nconst LAZY_MAPS_API_CONFIG = new InjectionToken('angular-google-maps LAZY_MAPS_API_CONFIG');\nclass LazyMapsAPILoader extends MapsAPILoader {\n    constructor(config = null, w, d, localeId) {\n        super();\n        this.localeId = localeId;\n        this._SCRIPT_ID = 'agmGoogleMapsApiScript';\n        this.callbackName = `agmLazyMapsAPILoader`;\n        this._config = config || {};\n        this._windowRef = w;\n        this._documentRef = d;\n    }\n    load() {\n        const window = this._windowRef.getNativeWindow();\n        if (window.google && window.google.maps) {\n            // Google maps already loaded on the page.\n            return Promise.resolve();\n        }\n        if (this._scriptLoadingPromise) {\n            return this._scriptLoadingPromise;\n        }\n        // this can happen in HMR situations or Stackblitz.io editors.\n        const scriptOnPage = this._documentRef.getNativeDocument().getElementById(this._SCRIPT_ID);\n        if (scriptOnPage) {\n            this._assignScriptLoadingPromise(scriptOnPage);\n            return this._scriptLoadingPromise;\n        }\n        const script = this._documentRef.getNativeDocument().createElement('script');\n        script.type = 'text/javascript';\n        script.async = true;\n        script.defer = true;\n        script.id = this._SCRIPT_ID;\n        script.src = this._getScriptSrc(this.callbackName);\n        this._assignScriptLoadingPromise(script);\n        this._documentRef.getNativeDocument().body.appendChild(script);\n        return this._scriptLoadingPromise;\n    }\n    _assignScriptLoadingPromise(scriptElem) {\n        this._scriptLoadingPromise = new Promise((resolve, reject) => {\n            this._windowRef.getNativeWindow()[this.callbackName] = () => {\n                resolve();\n            };\n            scriptElem.onerror = (error) => {\n                reject(error);\n            };\n        });\n    }\n    _getScriptSrc(callbackName) {\n        const protocolType = (this._config && this._config.protocol) || GoogleMapsScriptProtocol.HTTPS;\n        let protocol;\n        switch (protocolType) {\n            case GoogleMapsScriptProtocol.AUTO:\n                protocol = '';\n                break;\n            case GoogleMapsScriptProtocol.HTTP:\n                protocol = 'http:';\n                break;\n            case GoogleMapsScriptProtocol.HTTPS:\n                protocol = 'https:';\n                break;\n        }\n        const hostAndPath = this._config.hostAndPath || 'maps.googleapis.com/maps/api/js';\n        const queryParams = {\n            v: this._config.apiVersion || 'quarterly',\n            callback: callbackName,\n            key: this._config.apiKey,\n            client: this._config.clientId,\n            channel: this._config.channel,\n            libraries: this._config.libraries,\n            region: this._config.region,\n            language: this._config.language || (this.localeId !== 'en-US' ? this.localeId : null),\n        };\n        const params = Object.keys(queryParams)\n            .filter((k) => queryParams[k] != null)\n            .filter((k) => {\n            // remove empty arrays\n            return !Array.isArray(queryParams[k]) ||\n                (Array.isArray(queryParams[k]) && queryParams[k].length > 0);\n        })\n            .map((k) => {\n            // join arrays as comma seperated strings\n            const i = queryParams[k];\n            if (Array.isArray(i)) {\n                return { key: k, value: i.join(',') };\n            }\n            return { key: k, value: queryParams[k] };\n        })\n            .map((entry) => {\n            return `${entry.key}=${entry.value}`;\n        })\n            .join('&');\n        return `${protocol}//${hostAndPath}?${params}`;\n    }\n}\nLazyMapsAPILoader.ɵfac = function LazyMapsAPILoader_Factory(t) { return new (t || LazyMapsAPILoader)(ɵngcc0.ɵɵinject(LAZY_MAPS_API_CONFIG, 8), ɵngcc0.ɵɵinject(WindowRef), ɵngcc0.ɵɵinject(DocumentRef), ɵngcc0.ɵɵinject(LOCALE_ID)); };\nLazyMapsAPILoader.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: LazyMapsAPILoader, factory: LazyMapsAPILoader.ɵfac });\nLazyMapsAPILoader.ctorParameters = () => [\n    { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [LAZY_MAPS_API_CONFIG,] }] },\n    { type: WindowRef },\n    { type: DocumentRef },\n    { type: String, decorators: [{ type: Inject, args: [LOCALE_ID,] }] }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(LazyMapsAPILoader, [{\n        type: Injectable\n    }], function () { return [{ type: undefined, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [LAZY_MAPS_API_CONFIG]\n            }] }, { type: WindowRef }, { type: DocumentRef }, { type: String, decorators: [{\n                type: Inject,\n                args: [LOCALE_ID]\n            }] }]; }, null); })();\n\nclass MarkerManager {\n    constructor(_mapsWrapper, _zone) {\n        this._mapsWrapper = _mapsWrapper;\n        this._zone = _zone;\n        this._markers = new Map();\n    }\n    convertAnimation(uiAnim) {\n        return __awaiter(this, void 0, void 0, function* () {\n            if (uiAnim === null) {\n                return null;\n            }\n            else {\n                return this._mapsWrapper.getNativeMap().then(() => google.maps.Animation[uiAnim]);\n            }\n        });\n    }\n    deleteMarker(markerDirective) {\n        const markerPromise = this._markers.get(markerDirective);\n        if (markerPromise == null) {\n            // marker already deleted\n            return Promise.resolve();\n        }\n        return markerPromise.then((marker) => {\n            return this._zone.run(() => {\n                marker.setMap(null);\n                this._markers.delete(markerDirective);\n            });\n        });\n    }\n    updateMarkerPosition(marker) {\n        return this._markers.get(marker).then((m) => m.setPosition({ lat: marker.latitude, lng: marker.longitude }));\n    }\n    updateTitle(marker) {\n        return this._markers.get(marker).then((m) => m.setTitle(marker.title));\n    }\n    updateLabel(marker) {\n        return this._markers.get(marker).then((m) => { m.setLabel(marker.label); });\n    }\n    updateDraggable(marker) {\n        return this._markers.get(marker).then((m) => m.setDraggable(marker.draggable));\n    }\n    updateIcon(marker) {\n        return this._markers.get(marker).then((m) => m.setIcon(marker.iconUrl));\n    }\n    updateOpacity(marker) {\n        return this._markers.get(marker).then((m) => m.setOpacity(marker.opacity));\n    }\n    updateVisible(marker) {\n        return this._markers.get(marker).then((m) => m.setVisible(marker.visible));\n    }\n    updateZIndex(marker) {\n        return this._markers.get(marker).then((m) => m.setZIndex(marker.zIndex));\n    }\n    updateClickable(marker) {\n        return this._markers.get(marker).then((m) => m.setClickable(marker.clickable));\n    }\n    updateAnimation(marker) {\n        return __awaiter(this, void 0, void 0, function* () {\n            const m = yield this._markers.get(marker);\n            m.setAnimation(yield this.convertAnimation(marker.animation));\n        });\n    }\n    addMarker(marker) {\n        const markerPromise = new Promise((resolve) => __awaiter(this, void 0, void 0, function* () {\n            return this._mapsWrapper.createMarker({\n                position: { lat: marker.latitude, lng: marker.longitude },\n                label: marker.label,\n                draggable: marker.draggable,\n                icon: marker.iconUrl,\n                opacity: marker.opacity,\n                visible: marker.visible,\n                zIndex: marker.zIndex,\n                title: marker.title,\n                clickable: marker.clickable,\n                animation: yield this.convertAnimation(marker.animation),\n            }).then(resolve);\n        }));\n        this._markers.set(marker, markerPromise);\n    }\n    getNativeMarker(marker) {\n        return this._markers.get(marker);\n    }\n    createEventObservable(eventName, marker) {\n        return new Observable(observer => {\n            this._markers.get(marker).then(m => m.addListener(eventName, e => this._zone.run(() => observer.next(e))));\n        });\n    }\n}\nMarkerManager.ɵfac = function MarkerManager_Factory(t) { return new (t || MarkerManager)(ɵngcc0.ɵɵinject(GoogleMapsAPIWrapper), ɵngcc0.ɵɵinject(ɵngcc0.NgZone)); };\nMarkerManager.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: MarkerManager, factory: MarkerManager.ɵfac });\nMarkerManager.ctorParameters = () => [\n    { type: GoogleMapsAPIWrapper },\n    { type: NgZone }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(MarkerManager, [{\n        type: Injectable\n    }], function () { return [{ type: GoogleMapsAPIWrapper }, { type: ɵngcc0.NgZone }]; }, null); })();\n\nclass InfoWindowManager {\n    constructor(_mapsWrapper, _zone, _markerManager) {\n        this._mapsWrapper = _mapsWrapper;\n        this._zone = _zone;\n        this._markerManager = _markerManager;\n        this._infoWindows = new Map();\n    }\n    deleteInfoWindow(infoWindow) {\n        const iWindow = this._infoWindows.get(infoWindow);\n        if (iWindow == null) {\n            // info window already deleted\n            return Promise.resolve();\n        }\n        return iWindow.then((i) => {\n            return this._zone.run(() => {\n                i.close();\n                this._infoWindows.delete(infoWindow);\n            });\n        });\n    }\n    setPosition(infoWindow) {\n        return this._infoWindows.get(infoWindow).then((i) => i.setPosition({\n            lat: infoWindow.latitude,\n            lng: infoWindow.longitude,\n        }));\n    }\n    setZIndex(infoWindow) {\n        return this._infoWindows.get(infoWindow)\n            .then((i) => i.setZIndex(infoWindow.zIndex));\n    }\n    open(infoWindow) {\n        return this._infoWindows.get(infoWindow).then((w) => {\n            if (infoWindow.hostMarker != null) {\n                return this._markerManager.getNativeMarker(infoWindow.hostMarker).then((marker) => {\n                    return this._mapsWrapper.getNativeMap().then((map) => w.open(map, marker));\n                });\n            }\n            return this._mapsWrapper.getNativeMap().then((map) => w.open(map));\n        });\n    }\n    close(infoWindow) {\n        return this._infoWindows.get(infoWindow).then((w) => w.close());\n    }\n    setOptions(infoWindow, options) {\n        return this._infoWindows.get(infoWindow).then((i) => i.setOptions(options));\n    }\n    addInfoWindow(infoWindow) {\n        const options = {\n            content: infoWindow.content,\n            maxWidth: infoWindow.maxWidth,\n            zIndex: infoWindow.zIndex,\n            disableAutoPan: infoWindow.disableAutoPan,\n        };\n        if (typeof infoWindow.latitude === 'number' && typeof infoWindow.longitude === 'number') {\n            options.position = { lat: infoWindow.latitude, lng: infoWindow.longitude };\n        }\n        const infoWindowPromise = this._mapsWrapper.createInfoWindow(options);\n        this._infoWindows.set(infoWindow, infoWindowPromise);\n    }\n    /**\n     * Creates a Google Maps event listener for the given InfoWindow as an Observable\n     */\n    createEventObservable(eventName, infoWindow) {\n        return new Observable((observer) => {\n            this._infoWindows.get(infoWindow).then((i) => {\n                i.addListener(eventName, (e) => this._zone.run(() => observer.next(e)));\n            });\n        });\n    }\n}\nInfoWindowManager.ɵfac = function InfoWindowManager_Factory(t) { return new (t || InfoWindowManager)(ɵngcc0.ɵɵinject(GoogleMapsAPIWrapper), ɵngcc0.ɵɵinject(ɵngcc0.NgZone), ɵngcc0.ɵɵinject(MarkerManager)); };\nInfoWindowManager.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: InfoWindowManager, factory: InfoWindowManager.ɵfac });\nInfoWindowManager.ctorParameters = () => [\n    { type: GoogleMapsAPIWrapper },\n    { type: NgZone },\n    { type: MarkerManager }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(InfoWindowManager, [{\n        type: Injectable\n    }], function () { return [{ type: GoogleMapsAPIWrapper }, { type: ɵngcc0.NgZone }, { type: MarkerManager }]; }, null); })();\n\n/**\n * Manages all KML Layers for a Google Map instance.\n */\nclass KmlLayerManager {\n    constructor(_wrapper, _zone) {\n        this._wrapper = _wrapper;\n        this._zone = _zone;\n        this._layers = new Map();\n    }\n    /**\n     * Adds a new KML Layer to the map.\n     */\n    addKmlLayer(layer) {\n        const newLayer = this._wrapper.getNativeMap().then(m => {\n            return new google.maps.KmlLayer({\n                clickable: layer.clickable,\n                map: m,\n                preserveViewport: layer.preserveViewport,\n                screenOverlays: layer.screenOverlays,\n                suppressInfoWindows: layer.suppressInfoWindows,\n                url: layer.url,\n                zIndex: layer.zIndex,\n            });\n        });\n        this._layers.set(layer, newLayer);\n    }\n    setOptions(layer, options) {\n        this._layers.get(layer).then(l => l.setOptions(options));\n    }\n    deleteKmlLayer(layer) {\n        this._layers.get(layer).then(l => {\n            l.setMap(null);\n            this._layers.delete(layer);\n        });\n    }\n    /**\n     * Creates a Google Maps event listener for the given KmlLayer as an Observable\n     */\n    createEventObservable(eventName, layer) {\n        return new Observable((observer) => {\n            this._layers.get(layer).then((m) => {\n                m.addListener(eventName, (e) => this._zone.run(() => observer.next(e)));\n            });\n        });\n    }\n}\nKmlLayerManager.ɵfac = function KmlLayerManager_Factory(t) { return new (t || KmlLayerManager)(ɵngcc0.ɵɵinject(GoogleMapsAPIWrapper), ɵngcc0.ɵɵinject(ɵngcc0.NgZone)); };\nKmlLayerManager.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: KmlLayerManager, factory: KmlLayerManager.ɵfac });\nKmlLayerManager.ctorParameters = () => [\n    { type: GoogleMapsAPIWrapper },\n    { type: NgZone }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(KmlLayerManager, [{\n        type: Injectable\n    }], function () { return [{ type: GoogleMapsAPIWrapper }, { type: ɵngcc0.NgZone }]; }, null); })();\n\n/**\n * This class manages Transit and Bicycling Layers for a Google Map instance.\n */\nclass LayerManager {\n    constructor(_wrapper) {\n        this._wrapper = _wrapper;\n        this._layers = new Map();\n    }\n    /**\n     * Adds a transit layer to a map instance.\n     * @param layer - a TransitLayer object\n     * @param _options - TransitLayerOptions options\n     * @returns void\n     */\n    addTransitLayer(layer) {\n        const newLayer = this._wrapper.createTransitLayer();\n        this._layers.set(layer, newLayer);\n    }\n    /**\n     * Adds a bicycling layer to a map instance.\n     * @param layer - a bicycling layer object\n     * @param _options - BicyclingLayer options\n     * @returns void\n     */\n    addBicyclingLayer(layer) {\n        const newLayer = this._wrapper.createBicyclingLayer();\n        this._layers.set(layer, newLayer);\n    }\n    /**\n     * Deletes a map layer\n     * @param layer - the layer to delete\n     */\n    deleteLayer(layer) {\n        return this._layers.get(layer).then(currentLayer => {\n            currentLayer.setMap(null);\n            this._layers.delete(layer);\n        });\n    }\n}\nLayerManager.ɵfac = function LayerManager_Factory(t) { return new (t || LayerManager)(ɵngcc0.ɵɵinject(GoogleMapsAPIWrapper)); };\nLayerManager.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: LayerManager, factory: LayerManager.ɵfac });\nLayerManager.ctorParameters = () => [\n    { type: GoogleMapsAPIWrapper }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(LayerManager, [{\n        type: Injectable\n    }], function () { return [{ type: GoogleMapsAPIWrapper }]; }, null); })();\n\n/**\n * When using the NoOpMapsAPILoader, the Google Maps API must be added to the page via a `<script>`\n * Tag.\n * It's important that the Google Maps API script gets loaded first on the page.\n */\nclass NoOpMapsAPILoader {\n    load() {\n        if (!window.google || !window.google.maps) {\n            throw new Error('Google Maps API not loaded on page. Make sure window.google.maps is available!');\n        }\n        return Promise.resolve();\n    }\n}\n\nfunction createMVCEventObservable(array) {\n    const eventNames = ['insert_at', 'remove_at', 'set_at'];\n    return fromEventPattern(handler => eventNames.map(eventName => array.addListener(eventName, (index, previous) => handler.apply(array, [{ newArr: array.getArray(), eventName, index, previous }]))), (_handler, evListeners) => evListeners.forEach(evListener => evListener.remove()));\n}\nclass MvcArrayMock {\n    constructor() {\n        this.vals = [];\n        this.listeners = {\n            remove_at: [],\n            insert_at: [],\n            set_at: [],\n        };\n    }\n    clear() {\n        for (let i = this.vals.length - 1; i >= 0; i--) {\n            this.removeAt(i);\n        }\n    }\n    getArray() {\n        return [...this.vals];\n    }\n    getAt(i) {\n        return this.vals[i];\n    }\n    getLength() {\n        return this.vals.length;\n    }\n    insertAt(i, elem) {\n        this.vals.splice(i, 0, elem);\n        this.listeners.insert_at.forEach(listener => listener(i));\n    }\n    pop() {\n        const deleted = this.vals.pop();\n        this.listeners.remove_at.forEach(listener => listener(this.vals.length, deleted));\n        return deleted;\n    }\n    push(elem) {\n        this.vals.push(elem);\n        this.listeners.insert_at.forEach(listener => listener(this.vals.length - 1));\n        return this.vals.length;\n    }\n    removeAt(i) {\n        const deleted = this.vals.splice(i, 1)[0];\n        this.listeners.remove_at.forEach(listener => listener(i, deleted));\n        return deleted;\n    }\n    setAt(i, elem) {\n        const deleted = this.vals[i];\n        this.vals[i] = elem;\n        this.listeners.set_at.forEach(listener => listener(i, deleted));\n    }\n    forEach(callback) {\n        this.vals.forEach(callback);\n    }\n    addListener(eventName, handler) {\n        const listenerArr = this.listeners[eventName];\n        listenerArr.push(handler);\n        return {\n            remove: () => {\n                listenerArr.splice(listenerArr.indexOf(handler), 1);\n            },\n        };\n    }\n    bindTo() { throw new Error('Not implemented'); }\n    changed() { throw new Error('Not implemented'); }\n    get() { throw new Error('Not implemented'); }\n    notify() { throw new Error('Not implemented'); }\n    set() { throw new Error('Not implemented'); }\n    setValues() { throw new Error('Not implemented'); }\n    unbind() { throw new Error('Not implemented'); }\n    unbindAll() { throw new Error('Not implemented'); }\n}\n\nclass PolygonManager {\n    constructor(_mapsWrapper, _zone) {\n        this._mapsWrapper = _mapsWrapper;\n        this._zone = _zone;\n        this._polygons = new Map();\n    }\n    addPolygon(path) {\n        const polygonPromise = this._mapsWrapper.createPolygon({\n            clickable: path.clickable,\n            draggable: path.draggable,\n            editable: path.editable,\n            fillColor: path.fillColor,\n            fillOpacity: path.fillOpacity,\n            geodesic: path.geodesic,\n            paths: path.paths,\n            strokeColor: path.strokeColor,\n            strokeOpacity: path.strokeOpacity,\n            strokeWeight: path.strokeWeight,\n            visible: path.visible,\n            zIndex: path.zIndex,\n        });\n        this._polygons.set(path, polygonPromise);\n    }\n    updatePolygon(polygon) {\n        const m = this._polygons.get(polygon);\n        if (m == null) {\n            return Promise.resolve();\n        }\n        return m.then((l) => this._zone.run(() => { l.setPaths(polygon.paths); }));\n    }\n    setPolygonOptions(path, options) {\n        return this._polygons.get(path).then((l) => { l.setOptions(options); });\n    }\n    deletePolygon(paths) {\n        const m = this._polygons.get(paths);\n        if (m == null) {\n            return Promise.resolve();\n        }\n        return m.then((l) => {\n            return this._zone.run(() => {\n                l.setMap(null);\n                this._polygons.delete(paths);\n            });\n        });\n    }\n    getPath(polygonDirective) {\n        return this._polygons.get(polygonDirective)\n            .then((polygon) => polygon.getPath().getArray());\n    }\n    getPaths(polygonDirective) {\n        return this._polygons.get(polygonDirective)\n            .then((polygon) => polygon.getPaths().getArray().map((p) => p.getArray()));\n    }\n    createEventObservable(eventName, path) {\n        return new Observable((observer) => {\n            this._polygons.get(path).then((l) => {\n                l.addListener(eventName, (e) => this._zone.run(() => observer.next(e)));\n            });\n        });\n    }\n    createPathEventObservable(agmPolygon) {\n        return __awaiter(this, void 0, void 0, function* () {\n            const polygon = yield this._polygons.get(agmPolygon);\n            const paths = polygon.getPaths();\n            const pathsChanges$ = createMVCEventObservable(paths);\n            return pathsChanges$.pipe(startWith({ newArr: paths.getArray() }), // in order to subscribe to them all\n            switchMap(parentMVEvent => merge(... // rest parameter\n            parentMVEvent.newArr.map((chMVC, index) => createMVCEventObservable(chMVC)\n                .pipe(map(chMVCEvent => ({ parentMVEvent, chMVCEvent, pathIndex: index })))))\n                .pipe(// start the merged ob with an event signinifing change to parent\n            startWith({ parentMVEvent, chMVCEvent: null, pathIndex: null }))), skip(1), // skip the manually added event\n            map(({ parentMVEvent, chMVCEvent, pathIndex }) => {\n                let retVal;\n                if (!chMVCEvent) {\n                    retVal = {\n                        newArr: parentMVEvent.newArr.map(subArr => subArr.getArray().map(latLng => latLng.toJSON())),\n                        eventName: parentMVEvent.eventName,\n                        index: parentMVEvent.index,\n                    };\n                    if (parentMVEvent.previous) {\n                        retVal.previous = parentMVEvent.previous.getArray();\n                    }\n                }\n                else {\n                    retVal = {\n                        newArr: parentMVEvent.newArr.map(subArr => subArr.getArray().map(latLng => latLng.toJSON())),\n                        pathIndex,\n                        eventName: chMVCEvent.eventName,\n                        index: chMVCEvent.index,\n                    };\n                    if (chMVCEvent.previous) {\n                        retVal.previous = chMVCEvent.previous;\n                    }\n                }\n                return retVal;\n            }));\n        });\n    }\n}\nPolygonManager.ɵfac = function PolygonManager_Factory(t) { return new (t || PolygonManager)(ɵngcc0.ɵɵinject(GoogleMapsAPIWrapper), ɵngcc0.ɵɵinject(ɵngcc0.NgZone)); };\nPolygonManager.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: PolygonManager, factory: PolygonManager.ɵfac });\nPolygonManager.ctorParameters = () => [\n    { type: GoogleMapsAPIWrapper },\n    { type: NgZone }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(PolygonManager, [{\n        type: Injectable\n    }], function () { return [{ type: GoogleMapsAPIWrapper }, { type: ɵngcc0.NgZone }]; }, null); })();\n\nclass PolylineManager {\n    constructor(_mapsWrapper, _zone) {\n        this._mapsWrapper = _mapsWrapper;\n        this._zone = _zone;\n        this._polylines = new Map();\n    }\n    static _convertPoints(line) {\n        const path = line._getPoints().map((point) => {\n            return { lat: point.latitude, lng: point.longitude };\n        });\n        return path;\n    }\n    static _convertPath(path) {\n        const symbolPath = google.maps.SymbolPath[path];\n        if (typeof symbolPath === 'number') {\n            return symbolPath;\n        }\n        else {\n            return path;\n        }\n    }\n    static _convertIcons(line) {\n        const icons = line._getIcons().map(agmIcon => ({\n            fixedRotation: agmIcon.fixedRotation,\n            offset: agmIcon.offset,\n            repeat: agmIcon.repeat,\n            icon: {\n                anchor: new google.maps.Point(agmIcon.anchorX, agmIcon.anchorY),\n                fillColor: agmIcon.fillColor,\n                fillOpacity: agmIcon.fillOpacity,\n                path: PolylineManager._convertPath(agmIcon.path),\n                rotation: agmIcon.rotation,\n                scale: agmIcon.scale,\n                strokeColor: agmIcon.strokeColor,\n                strokeOpacity: agmIcon.strokeOpacity,\n                strokeWeight: agmIcon.strokeWeight,\n            },\n        }));\n        // prune undefineds;\n        icons.forEach(icon => {\n            Object.entries(icon).forEach(([key, val]) => {\n                if (typeof val === 'undefined') {\n                    delete icon[key];\n                }\n            });\n            if (typeof icon.icon.anchor.x === 'undefined' ||\n                typeof icon.icon.anchor.y === 'undefined') {\n                delete icon.icon.anchor;\n            }\n        });\n        return icons;\n    }\n    addPolyline(line) {\n        const polylinePromise = this._mapsWrapper.getNativeMap()\n            .then(() => [PolylineManager._convertPoints(line),\n            PolylineManager._convertIcons(line)])\n            .then(([path, icons]) => this._mapsWrapper.createPolyline({\n            clickable: line.clickable,\n            draggable: line.draggable,\n            editable: line.editable,\n            geodesic: line.geodesic,\n            strokeColor: line.strokeColor,\n            strokeOpacity: line.strokeOpacity,\n            strokeWeight: line.strokeWeight,\n            visible: line.visible,\n            zIndex: line.zIndex,\n            path,\n            icons,\n        }));\n        this._polylines.set(line, polylinePromise);\n    }\n    updatePolylinePoints(line) {\n        const path = PolylineManager._convertPoints(line);\n        const m = this._polylines.get(line);\n        if (m == null) {\n            return Promise.resolve();\n        }\n        return m.then((l) => this._zone.run(() => l.setPath(path)));\n    }\n    updateIconSequences(line) {\n        return __awaiter(this, void 0, void 0, function* () {\n            yield this._mapsWrapper.getNativeMap();\n            const icons = PolylineManager._convertIcons(line);\n            const m = this._polylines.get(line);\n            if (m == null) {\n                return;\n            }\n            return m.then(l => this._zone.run(() => l.setOptions({ icons })));\n        });\n    }\n    setPolylineOptions(line, options) {\n        return this._polylines.get(line).then((l) => { l.setOptions(options); });\n    }\n    deletePolyline(line) {\n        const m = this._polylines.get(line);\n        if (m == null) {\n            return Promise.resolve();\n        }\n        return m.then((l) => {\n            return this._zone.run(() => {\n                l.setMap(null);\n                this._polylines.delete(line);\n            });\n        });\n    }\n    getMVCPath(agmPolyline) {\n        return __awaiter(this, void 0, void 0, function* () {\n            const polyline = yield this._polylines.get(agmPolyline);\n            return polyline.getPath();\n        });\n    }\n    getPath(agmPolyline) {\n        return __awaiter(this, void 0, void 0, function* () {\n            return (yield this.getMVCPath(agmPolyline)).getArray();\n        });\n    }\n    createEventObservable(eventName, line) {\n        return new Observable((observer) => {\n            this._polylines.get(line).then((l) => {\n                l.addListener(eventName, (e) => this._zone.run(() => observer.next(e)));\n            });\n        });\n    }\n    createPathEventObservable(line) {\n        return __awaiter(this, void 0, void 0, function* () {\n            const mvcPath = yield this.getMVCPath(line);\n            return createMVCEventObservable(mvcPath);\n        });\n    }\n}\nPolylineManager.ɵfac = function PolylineManager_Factory(t) { return new (t || PolylineManager)(ɵngcc0.ɵɵinject(GoogleMapsAPIWrapper), ɵngcc0.ɵɵinject(ɵngcc0.NgZone)); };\nPolylineManager.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: PolylineManager, factory: PolylineManager.ɵfac });\nPolylineManager.ctorParameters = () => [\n    { type: GoogleMapsAPIWrapper },\n    { type: NgZone }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(PolylineManager, [{\n        type: Injectable\n    }], function () { return [{ type: GoogleMapsAPIWrapper }, { type: ɵngcc0.NgZone }]; }, null); })();\n\nclass RectangleManager {\n    constructor(_apiWrapper, _zone) {\n        this._apiWrapper = _apiWrapper;\n        this._zone = _zone;\n        this._rectangles = new Map();\n    }\n    addRectangle(rectangle) {\n        this._apiWrapper.getNativeMap().then(() => this._rectangles.set(rectangle, this._apiWrapper.createRectangle({\n            bounds: {\n                north: rectangle.north,\n                east: rectangle.east,\n                south: rectangle.south,\n                west: rectangle.west,\n            },\n            clickable: rectangle.clickable,\n            draggable: rectangle.draggable,\n            editable: rectangle.editable,\n            fillColor: rectangle.fillColor,\n            fillOpacity: rectangle.fillOpacity,\n            strokeColor: rectangle.strokeColor,\n            strokeOpacity: rectangle.strokeOpacity,\n            strokePosition: google.maps.StrokePosition[rectangle.strokePosition],\n            strokeWeight: rectangle.strokeWeight,\n            visible: rectangle.visible,\n            zIndex: rectangle.zIndex,\n        })));\n    }\n    /**\n     * Removes the given rectangle from the map.\n     */\n    removeRectangle(rectangle) {\n        return this._rectangles.get(rectangle).then((r) => {\n            r.setMap(null);\n            this._rectangles.delete(rectangle);\n        });\n    }\n    setOptions(rectangle, options) {\n        return this._rectangles.get(rectangle).then((r) => {\n            const actualStrokePosition = options.strokePosition;\n            options.strokePosition = google.maps.StrokePosition[actualStrokePosition];\n            r.setOptions(options);\n        });\n    }\n    getBounds(rectangle) {\n        return this._rectangles.get(rectangle).then((r) => r.getBounds());\n    }\n    setBounds(rectangle) {\n        return this._rectangles.get(rectangle).then((r) => {\n            return r.setBounds({\n                north: rectangle.north,\n                east: rectangle.east,\n                south: rectangle.south,\n                west: rectangle.west,\n            });\n        });\n    }\n    setEditable(rectangle) {\n        return this._rectangles.get(rectangle).then((r) => {\n            return r.setEditable(rectangle.editable);\n        });\n    }\n    setDraggable(rectangle) {\n        return this._rectangles.get(rectangle).then((r) => {\n            return r.setDraggable(rectangle.draggable);\n        });\n    }\n    setVisible(rectangle) {\n        return this._rectangles.get(rectangle).then((r) => {\n            return r.setVisible(rectangle.visible);\n        });\n    }\n    createEventObservable(eventName, rectangle) {\n        return new Observable((subsrciber) => {\n            let listener = null;\n            this._rectangles.get(rectangle).then((r) => {\n                listener = r.addListener(eventName, (e) => this._zone.run(() => subsrciber.next(e)));\n            });\n            return () => {\n                if (listener !== null) {\n                    listener.remove();\n                }\n            };\n        });\n    }\n}\nRectangleManager.ɵfac = function RectangleManager_Factory(t) { return new (t || RectangleManager)(ɵngcc0.ɵɵinject(GoogleMapsAPIWrapper), ɵngcc0.ɵɵinject(ɵngcc0.NgZone)); };\nRectangleManager.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: RectangleManager, factory: RectangleManager.ɵfac });\nRectangleManager.ctorParameters = () => [\n    { type: GoogleMapsAPIWrapper },\n    { type: NgZone }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(RectangleManager, [{\n        type: Injectable\n    }], function () { return [{ type: GoogleMapsAPIWrapper }, { type: ɵngcc0.NgZone }]; }, null); })();\n\nlet layerId = 0;\n/*\n * This directive adds a bicycling layer to a google map instance\n * <agm-bicycling-layer [visible]=\"true|false\"> <agm-bicycling-layer>\n * */\nclass AgmBicyclingLayer {\n    constructor(_manager) {\n        this._manager = _manager;\n        this._addedToManager = false;\n        this._id = (layerId++).toString();\n        /**\n         * Hide/show bicycling layer\n         */\n        this.visible = true;\n    }\n    ngOnInit() {\n        if (this._addedToManager) {\n            return;\n        }\n        this._manager.addBicyclingLayer(this);\n        this._addedToManager = true;\n    }\n    /** @internal */\n    id() { return this._id; }\n    /** @internal */\n    toString() { return `AgmBicyclingLayer-${this._id.toString()}`; }\n    /** @internal */\n    ngOnDestroy() {\n        this._manager.deleteLayer(this);\n    }\n}\nAgmBicyclingLayer.ɵfac = function AgmBicyclingLayer_Factory(t) { return new (t || AgmBicyclingLayer)(ɵngcc0.ɵɵdirectiveInject(LayerManager)); };\nAgmBicyclingLayer.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmBicyclingLayer, selectors: [[\"agm-bicycling-layer\"]], inputs: { visible: \"visible\" } });\nAgmBicyclingLayer.ctorParameters = () => [\n    { type: LayerManager }\n];\nAgmBicyclingLayer.propDecorators = {\n    visible: [{ type: Input }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmBicyclingLayer, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-bicycling-layer'\n            }]\n    }], function () { return [{ type: LayerManager }]; }, { visible: [{\n            type: Input\n        }] }); })();\n\nclass AgmCircle {\n    constructor(_manager) {\n        this._manager = _manager;\n        /**\n         * Indicates whether this Circle handles mouse events. Defaults to true.\n         */\n        this.clickable = true;\n        /**\n         * If set to true, the user can drag this circle over the map. Defaults to false.\n         */\n        // tslint:disable-next-line:no-input-rename\n        this.draggable = false;\n        /**\n         * If set to true, the user can edit this circle by dragging the control points shown at\n         * the center and around the circumference of the circle. Defaults to false.\n         */\n        this.editable = false;\n        /**\n         * The radius in meters on the Earth's surface.\n         */\n        this.radius = 0;\n        /**\n         * The stroke position. Defaults to CENTER.\n         * This property is not supported on Internet Explorer 8 and earlier.\n         */\n        this.strokePosition = 'CENTER';\n        /**\n         * The stroke width in pixels.\n         */\n        this.strokeWeight = 0;\n        /**\n         * Whether this circle is visible on the map. Defaults to true.\n         */\n        this.visible = true;\n        /**\n         * This event is fired when the circle's center is changed.\n         */\n        this.centerChange = new EventEmitter();\n        /**\n         * This event emitter gets emitted when the user clicks on the circle.\n         */\n        this.circleClick = new EventEmitter();\n        /**\n         * This event emitter gets emitted when the user clicks on the circle.\n         */\n        this.circleDblClick = new EventEmitter();\n        /**\n         * This event is repeatedly fired while the user drags the circle.\n         */\n        // tslint:disable-next-line: no-output-native\n        this.drag = new EventEmitter();\n        /**\n         * This event is fired when the user stops dragging the circle.\n         */\n        this.dragEnd = new EventEmitter();\n        /**\n         * This event is fired when the user starts dragging the circle.\n         */\n        this.dragStart = new EventEmitter();\n        /**\n         * This event is fired when the DOM mousedown event is fired on the circle.\n         */\n        this.mouseDown = new EventEmitter();\n        /**\n         * This event is fired when the DOM mousemove event is fired on the circle.\n         */\n        this.mouseMove = new EventEmitter();\n        /**\n         * This event is fired on circle mouseout.\n         */\n        this.mouseOut = new EventEmitter();\n        /**\n         * This event is fired on circle mouseover.\n         */\n        this.mouseOver = new EventEmitter();\n        /**\n         * This event is fired when the DOM mouseup event is fired on the circle.\n         */\n        this.mouseUp = new EventEmitter();\n        /**\n         * This event is fired when the circle's radius is changed.\n         */\n        this.radiusChange = new EventEmitter();\n        /**\n         * This event is fired when the circle is right-clicked on.\n         */\n        this.rightClick = new EventEmitter();\n        this._circleAddedToManager = false;\n        this._eventSubscriptions = [];\n    }\n    /** @internal */\n    ngOnInit() {\n        this._manager.addCircle(this);\n        this._circleAddedToManager = true;\n        this._registerEventListeners();\n    }\n    /** @internal */\n    ngOnChanges(changes) {\n        if (!this._circleAddedToManager) {\n            return;\n        }\n        // tslint:disable: no-string-literal\n        if (changes['latitude'] || changes['longitude']) {\n            this._manager.setCenter(this);\n        }\n        if (changes['editable']) {\n            this._manager.setEditable(this);\n        }\n        if (changes['draggable']) {\n            this._manager.setDraggable(this);\n        }\n        if (changes['visible']) {\n            this._manager.setVisible(this);\n        }\n        if (changes['radius']) {\n            this._manager.setRadius(this);\n        }\n        // tslint:enable: no-string-literal\n        this._updateCircleOptionsChanges(changes);\n    }\n    _updateCircleOptionsChanges(changes) {\n        const options = {};\n        const optionKeys = Object.keys(changes).filter(k => AgmCircle._mapOptions.indexOf(k) !== -1);\n        optionKeys.forEach((k) => { options[k] = changes[k].currentValue; });\n        if (optionKeys.length > 0) {\n            this._manager.setOptions(this, options);\n        }\n    }\n    _registerEventListeners() {\n        const events = new Map();\n        events.set('center_changed', this.centerChange);\n        events.set('click', this.circleClick);\n        events.set('dblclick', this.circleDblClick);\n        events.set('drag', this.drag);\n        events.set('dragend', this.dragEnd);\n        events.set('dragstart', this.dragStart);\n        events.set('mousedown', this.mouseDown);\n        events.set('mousemove', this.mouseMove);\n        events.set('mouseout', this.mouseOut);\n        events.set('mouseover', this.mouseOver);\n        events.set('mouseup', this.mouseUp);\n        events.set('radius_changed', this.radiusChange);\n        events.set('rightclick', this.rightClick);\n        events.forEach((eventEmitter, eventName) => {\n            this._eventSubscriptions.push(this._manager.createEventObservable(eventName, this).subscribe((value) => {\n                switch (eventName) {\n                    case 'radius_changed':\n                        this._manager.getRadius(this).then((radius) => eventEmitter.emit(radius));\n                        break;\n                    case 'center_changed':\n                        this._manager.getCenter(this).then((center) => eventEmitter.emit({ lat: center.lat(), lng: center.lng() }));\n                        break;\n                    default:\n                        eventEmitter.emit(value);\n                }\n            }));\n        });\n    }\n    /** @internal */\n    ngOnDestroy() {\n        this._eventSubscriptions.forEach(s => s.unsubscribe());\n        this._eventSubscriptions = null;\n        this._manager.removeCircle(this);\n    }\n    /**\n     * Gets the LatLngBounds of this Circle.\n     */\n    getBounds() { return this._manager.getBounds(this); }\n    getCenter() { return this._manager.getCenter(this); }\n}\nAgmCircle.ɵfac = function AgmCircle_Factory(t) { return new (t || AgmCircle)(ɵngcc0.ɵɵdirectiveInject(CircleManager)); };\nAgmCircle.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmCircle, selectors: [[\"agm-circle\"]], inputs: { clickable: \"clickable\", draggable: [\"circleDraggable\", \"draggable\"], editable: \"editable\", radius: \"radius\", strokePosition: \"strokePosition\", strokeWeight: \"strokeWeight\", visible: \"visible\", latitude: \"latitude\", longitude: \"longitude\", fillColor: \"fillColor\", fillOpacity: \"fillOpacity\", strokeColor: \"strokeColor\", strokeOpacity: \"strokeOpacity\", zIndex: \"zIndex\" }, outputs: { centerChange: \"centerChange\", circleClick: \"circleClick\", circleDblClick: \"circleDblClick\", drag: \"drag\", dragEnd: \"dragEnd\", dragStart: \"dragStart\", mouseDown: \"mouseDown\", mouseMove: \"mouseMove\", mouseOut: \"mouseOut\", mouseOver: \"mouseOver\", mouseUp: \"mouseUp\", radiusChange: \"radiusChange\", rightClick: \"rightClick\" }, features: [ɵngcc0.ɵɵNgOnChangesFeature] });\nAgmCircle._mapOptions = [\n    'fillColor', 'fillOpacity', 'strokeColor', 'strokeOpacity', 'strokePosition', 'strokeWeight',\n    'visible', 'zIndex', 'clickable',\n];\nAgmCircle.ctorParameters = () => [\n    { type: CircleManager }\n];\nAgmCircle.propDecorators = {\n    latitude: [{ type: Input }],\n    longitude: [{ type: Input }],\n    clickable: [{ type: Input }],\n    draggable: [{ type: Input, args: ['circleDraggable',] }],\n    editable: [{ type: Input }],\n    fillColor: [{ type: Input }],\n    fillOpacity: [{ type: Input }],\n    radius: [{ type: Input }],\n    strokeColor: [{ type: Input }],\n    strokeOpacity: [{ type: Input }],\n    strokePosition: [{ type: Input }],\n    strokeWeight: [{ type: Input }],\n    visible: [{ type: Input }],\n    zIndex: [{ type: Input }],\n    centerChange: [{ type: Output }],\n    circleClick: [{ type: Output }],\n    circleDblClick: [{ type: Output }],\n    drag: [{ type: Output }],\n    dragEnd: [{ type: Output }],\n    dragStart: [{ type: Output }],\n    mouseDown: [{ type: Output }],\n    mouseMove: [{ type: Output }],\n    mouseOut: [{ type: Output }],\n    mouseOver: [{ type: Output }],\n    mouseUp: [{ type: Output }],\n    radiusChange: [{ type: Output }],\n    rightClick: [{ type: Output }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmCircle, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-circle'\n            }]\n    }], function () { return [{ type: CircleManager }]; }, { clickable: [{\n            type: Input\n        }], draggable: [{\n            type: Input,\n            args: ['circleDraggable']\n        }], editable: [{\n            type: Input\n        }], radius: [{\n            type: Input\n        }], strokePosition: [{\n            type: Input\n        }], strokeWeight: [{\n            type: Input\n        }], visible: [{\n            type: Input\n        }], centerChange: [{\n            type: Output\n        }], circleClick: [{\n            type: Output\n        }], circleDblClick: [{\n            type: Output\n        }], drag: [{\n            type: Output\n        }], dragEnd: [{\n            type: Output\n        }], dragStart: [{\n            type: Output\n        }], mouseDown: [{\n            type: Output\n        }], mouseMove: [{\n            type: Output\n        }], mouseOut: [{\n            type: Output\n        }], mouseOver: [{\n            type: Output\n        }], mouseUp: [{\n            type: Output\n        }], radiusChange: [{\n            type: Output\n        }], rightClick: [{\n            type: Output\n        }], latitude: [{\n            type: Input\n        }], longitude: [{\n            type: Input\n        }], fillColor: [{\n            type: Input\n        }], fillOpacity: [{\n            type: Input\n        }], strokeColor: [{\n            type: Input\n        }], strokeOpacity: [{\n            type: Input\n        }], zIndex: [{\n            type: Input\n        }] }); })();\n\nlet layerId$1 = 0;\n/**\n * AgmDataLayer enables the user to add data layers to the map.\n *\n * ### Example\n * ```typescript\n * import { Component } from 'angular2/core';\n * import { AgmMap, AgmDataLayer } from\n * 'angular-google-maps/core';\n *\n * @Component({\n *  selector: 'my-map-cmp',\n *  directives: [AgmMap, AgmDataLayer],\n *  styles: [`\n *    .agm-container {\n *      height: 300px;\n *    }\n * `],\n *  template: `\n * <agm-map [latitude]=\"lat\" [longitude]=\"lng\" [zoom]=\"zoom\">\n * \t  <agm-data-layer [geoJson]=\"geoJsonObject\" (layerClick)=\"clicked($event)\" [style]=\"styleFunc\">\n * \t  </agm-data-layer>\n * </agm-map>\n *  `\n * })\n * export class MyMapCmp {\n *   lat: number = -25.274449;\n *   lng: number = 133.775060;\n *   zoom: number = 5;\n *\n * clicked(clickEvent) {\n *    console.log(clickEvent);\n *  }\n *\n *  styleFunc(feature) {\n *    return ({\n *      clickable: false,\n *      fillColor: feature.getProperty('color'),\n *      strokeWeight: 1\n *    });\n *  }\n *\n *  geoJsonObject: Object = {\n *    \"type\": \"FeatureCollection\",\n *    \"features\": [\n *      {\n *        \"type\": \"Feature\",\n *        \"properties\": {\n *          \"letter\": \"G\",\n *          \"color\": \"blue\",\n *          \"rank\": \"7\",\n *          \"ascii\": \"71\"\n *        },\n *        \"geometry\": {\n *          \"type\": \"Polygon\",\n *          \"coordinates\": [\n *            [\n *              [123.61, -22.14], [122.38, -21.73], [121.06, -21.69], [119.66, -22.22], [119.00, -23.40],\n *              [118.65, -24.76], [118.43, -26.07], [118.78, -27.56], [119.22, -28.57], [120.23, -29.49],\n *              [121.77, -29.87], [123.57, -29.64], [124.45, -29.03], [124.71, -27.95], [124.80, -26.70],\n *              [124.80, -25.60], [123.61, -25.64], [122.56, -25.64], [121.72, -25.72], [121.81, -26.62],\n *              [121.86, -26.98], [122.60, -26.90], [123.57, -27.05], [123.57, -27.68], [123.35, -28.18],\n *              [122.51, -28.38], [121.77, -28.26], [121.02, -27.91], [120.49, -27.21], [120.14, -26.50],\n *              [120.10, -25.64], [120.27, -24.52], [120.67, -23.68], [121.72, -23.32], [122.43, -23.48],\n *              [123.04, -24.04], [124.54, -24.28], [124.58, -23.20], [123.61, -22.14]\n *            ]\n *          ]\n *        }\n *      },\n *      {\n *        \"type\": \"Feature\",\n *        \"properties\": {\n *          \"letter\": \"o\",\n *          \"color\": \"red\",\n *          \"rank\": \"15\",\n *          \"ascii\": \"111\"\n *        },\n *        \"geometry\": {\n *          \"type\": \"Polygon\",\n *          \"coordinates\": [\n *            [\n *              [128.84, -25.76], [128.18, -25.60], [127.96, -25.52], [127.88, -25.52], [127.70, -25.60],\n *              [127.26, -25.79], [126.60, -26.11], [126.16, -26.78], [126.12, -27.68], [126.21, -28.42],\n *              [126.69, -29.49], [127.74, -29.80], [128.80, -29.72], [129.41, -29.03], [129.72, -27.95],\n *              [129.68, -27.21], [129.33, -26.23], [128.84, -25.76]\n *            ],\n *            [\n *              [128.45, -27.44], [128.32, -26.94], [127.70, -26.82], [127.35, -27.05], [127.17, -27.80],\n *              [127.57, -28.22], [128.10, -28.42], [128.49, -27.80], [128.45, -27.44]\n *            ]\n *          ]\n *        }\n *      },\n *      {\n *        \"type\": \"Feature\",\n *        \"properties\": {\n *          \"letter\": \"o\",\n *          \"color\": \"yellow\",\n *          \"rank\": \"15\",\n *          \"ascii\": \"111\"\n *        },\n *        \"geometry\": {\n *          \"type\": \"Polygon\",\n *          \"coordinates\": [\n *            [\n *              [131.87, -25.76], [131.35, -26.07], [130.95, -26.78], [130.82, -27.64], [130.86, -28.53],\n *              [131.26, -29.22], [131.92, -29.76], [132.45, -29.87], [133.06, -29.76], [133.72, -29.34],\n *              [134.07, -28.80], [134.20, -27.91], [134.07, -27.21], [133.81, -26.31], [133.37, -25.83],\n *              [132.71, -25.64], [131.87, -25.76]\n *            ],\n *            [\n *              [133.15, -27.17], [132.71, -26.86], [132.09, -26.90], [131.74, -27.56], [131.79, -28.26],\n *              [132.36, -28.45], [132.93, -28.34], [133.15, -27.76], [133.15, -27.17]\n *            ]\n *          ]\n *        }\n *      },\n *      {\n *        \"type\": \"Feature\",\n *        \"properties\": {\n *          \"letter\": \"g\",\n *          \"color\": \"blue\",\n *          \"rank\": \"7\",\n *          \"ascii\": \"103\"\n *        },\n *        \"geometry\": {\n *          \"type\": \"Polygon\",\n *          \"coordinates\": [\n *            [\n *              [138.12, -25.04], [136.84, -25.16], [135.96, -25.36], [135.26, -25.99], [135, -26.90],\n *              [135.04, -27.91], [135.26, -28.88], [136.05, -29.45], [137.02, -29.49], [137.81, -29.49],\n *              [137.94, -29.99], [137.90, -31.20], [137.85, -32.24], [136.88, -32.69], [136.45, -32.36],\n *              [136.27, -31.80], [134.95, -31.84], [135.17, -32.99], [135.52, -33.43], [136.14, -33.76],\n *              [137.06, -33.83], [138.12, -33.65], [138.86, -33.21], [139.30, -32.28], [139.30, -31.24],\n *              [139.30, -30.14], [139.21, -28.96], [139.17, -28.22], [139.08, -27.41], [139.08, -26.47],\n *              [138.99, -25.40], [138.73, -25.00], [138.12, -25.04]\n *            ],\n *            [\n *              [137.50, -26.54], [136.97, -26.47], [136.49, -26.58], [136.31, -27.13], [136.31, -27.72],\n *              [136.58, -27.99], [137.50, -28.03], [137.68, -27.68], [137.59, -26.78], [137.50, -26.54]\n *            ]\n *          ]\n *        }\n *      },\n *      {\n *        \"type\": \"Feature\",\n *        \"properties\": {\n *          \"letter\": \"l\",\n *          \"color\": \"green\",\n *          \"rank\": \"12\",\n *          \"ascii\": \"108\"\n *        },\n *        \"geometry\": {\n *          \"type\": \"Polygon\",\n *          \"coordinates\": [\n *            [\n *              [140.14, -21.04], [140.31, -29.42], [141.67, -29.49], [141.59, -20.92], [140.14, -21.04]\n *            ]\n *          ]\n *        }\n *      },\n *      {\n *        \"type\": \"Feature\",\n *        \"properties\": {\n *          \"letter\": \"e\",\n *          \"color\": \"red\",\n *          \"rank\": \"5\",\n *          \"ascii\": \"101\"\n *        },\n *        \"geometry\": {\n *          \"type\": \"Polygon\",\n *          \"coordinates\": [\n *            [\n *              [144.14, -27.41], [145.67, -27.52], [146.86, -27.09], [146.82, -25.64], [146.25, -25.04],\n *              [145.45, -24.68], [144.66, -24.60], [144.09, -24.76], [143.43, -25.08], [142.99, -25.40],\n *              [142.64, -26.03], [142.64, -27.05], [142.64, -28.26], [143.30, -29.11], [144.18, -29.57],\n *              [145.41, -29.64], [146.46, -29.19], [146.64, -28.72], [146.82, -28.14], [144.84, -28.42],\n *              [144.31, -28.26], [144.14, -27.41]\n *            ],\n *            [\n *              [144.18, -26.39], [144.53, -26.58], [145.19, -26.62], [145.72, -26.35], [145.81, -25.91],\n *              [145.41, -25.68], [144.97, -25.68], [144.49, -25.64], [144, -25.99], [144.18, -26.39]\n *            ]\n *          ]\n *        }\n *      }\n *    ]\n *  };\n * }\n * ```\n */\nclass AgmDataLayer {\n    constructor(_manager) {\n        this._manager = _manager;\n        this._addedToManager = false;\n        this._id = (layerId$1++).toString();\n        this._subscriptions = [];\n        /**\n         * This event is fired when a feature in the layer is clicked.\n         */\n        this.layerClick = new EventEmitter();\n        /**\n         * The geoJson to be displayed\n         */\n        this.geoJson = null;\n    }\n    ngOnInit() {\n        if (this._addedToManager) {\n            return;\n        }\n        this._manager.addDataLayer(this);\n        this._addedToManager = true;\n        this._addEventListeners();\n    }\n    _addEventListeners() {\n        const listeners = [\n            { name: 'click', handler: (ev) => this.layerClick.emit(ev) },\n        ];\n        listeners.forEach((obj) => {\n            const os = this._manager.createEventObservable(obj.name, this).subscribe(obj.handler);\n            this._subscriptions.push(os);\n        });\n    }\n    /** @internal */\n    id() { return this._id; }\n    /** @internal */\n    toString() { return `AgmDataLayer-${this._id.toString()}`; }\n    /** @internal */\n    ngOnDestroy() {\n        this._manager.deleteDataLayer(this);\n        // unsubscribe all registered observable subscriptions\n        this._subscriptions.forEach(s => s.unsubscribe());\n    }\n    /** @internal */\n    ngOnChanges(changes) {\n        if (!this._addedToManager) {\n            return;\n        }\n        // tslint:disable-next-line: no-string-literal\n        const geoJsonChange = changes['geoJson'];\n        if (geoJsonChange) {\n            this._manager.updateGeoJson(this, geoJsonChange.currentValue);\n        }\n        const dataOptions = AgmDataLayer._dataOptionsAttributes.reduce((options, k) => options[k] = changes.hasOwnProperty(k) ? changes[k].currentValue : this[k], {});\n        this._manager.setDataOptions(this, dataOptions);\n    }\n}\nAgmDataLayer.ɵfac = function AgmDataLayer_Factory(t) { return new (t || AgmDataLayer)(ɵngcc0.ɵɵdirectiveInject(DataLayerManager)); };\nAgmDataLayer.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmDataLayer, selectors: [[\"agm-data-layer\"]], inputs: { geoJson: \"geoJson\", style: \"style\" }, outputs: { layerClick: \"layerClick\" }, features: [ɵngcc0.ɵɵNgOnChangesFeature] });\nAgmDataLayer._dataOptionsAttributes = ['style'];\nAgmDataLayer.ctorParameters = () => [\n    { type: DataLayerManager }\n];\nAgmDataLayer.propDecorators = {\n    layerClick: [{ type: Output }],\n    geoJson: [{ type: Input }],\n    style: [{ type: Input }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmDataLayer, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-data-layer'\n            }]\n    }], function () { return [{ type: DataLayerManager }]; }, { layerClick: [{\n            type: Output\n        }], geoJson: [{\n            type: Input\n        }], style: [{\n            type: Input\n        }] }); })();\n\n/**\n * Adds the given directive to the auto fit bounds feature when the value is true.\n * To make it work with you custom AGM component, you also have to implement the {@link FitBoundsAccessor} abstract class.\n * @example\n * <agm-marker [agmFitBounds]=\"true\"></agm-marker>\n */\nclass AgmFitBounds {\n    constructor(_fitBoundsAccessor, _fitBoundsService) {\n        this._fitBoundsAccessor = _fitBoundsAccessor;\n        this._fitBoundsService = _fitBoundsService;\n        /**\n         * If the value is true, the element gets added to the bounds of the map.\n         * Default: true.\n         */\n        this.agmFitBounds = true;\n        this._destroyed$ = new Subject();\n        this._latestFitBoundsDetails = null;\n    }\n    /**\n     * @internal\n     */\n    ngOnChanges() {\n        this._updateBounds();\n    }\n    /**\n     * @internal\n     */\n    ngOnInit() {\n        this._fitBoundsAccessor\n            .getFitBoundsDetails$()\n            .pipe(distinctUntilChanged((x, y) => x.latLng.lat === y.latLng.lat && x.latLng.lng === y.latLng.lng), takeUntil(this._destroyed$))\n            .subscribe(details => this._updateBounds(details));\n    }\n    /*\n     Either the location changed, or visible status changed.\n     Possible state changes are\n     invisible -> visible\n     visible -> invisible\n     visible -> visible (new location)\n    */\n    _updateBounds(newFitBoundsDetails) {\n        // either visibility will change, or location, so remove the old one anyway\n        if (this._latestFitBoundsDetails) {\n            this._fitBoundsService.removeFromBounds(this._latestFitBoundsDetails.latLng);\n            // don't set latestFitBoundsDetails to null, because we can toggle visibility from\n            // true -> false -> true, in which case we still need old value cached here\n        }\n        if (newFitBoundsDetails) {\n            this._latestFitBoundsDetails = newFitBoundsDetails;\n        }\n        if (!this._latestFitBoundsDetails) {\n            return;\n        }\n        if (this.agmFitBounds === true) {\n            this._fitBoundsService.addToBounds(this._latestFitBoundsDetails.latLng);\n        }\n    }\n    /**\n     * @internal\n     */\n    ngOnDestroy() {\n        this._destroyed$.next();\n        this._destroyed$.complete();\n        if (this._latestFitBoundsDetails !== null) {\n            this._fitBoundsService.removeFromBounds(this._latestFitBoundsDetails.latLng);\n        }\n    }\n}\nAgmFitBounds.ɵfac = function AgmFitBounds_Factory(t) { return new (t || AgmFitBounds)(ɵngcc0.ɵɵdirectiveInject(FitBoundsAccessor, 2), ɵngcc0.ɵɵdirectiveInject(FitBoundsService)); };\nAgmFitBounds.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmFitBounds, selectors: [[\"\", \"agmFitBounds\", \"\"]], inputs: { agmFitBounds: \"agmFitBounds\" }, features: [ɵngcc0.ɵɵNgOnChangesFeature] });\nAgmFitBounds.ctorParameters = () => [\n    { type: FitBoundsAccessor, decorators: [{ type: Self }] },\n    { type: FitBoundsService }\n];\nAgmFitBounds.propDecorators = {\n    agmFitBounds: [{ type: Input }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmFitBounds, [{\n        type: Directive,\n        args: [{\n                selector: '[agmFitBounds]'\n            }]\n    }], function () { return [{ type: FitBoundsAccessor, decorators: [{\n                type: Self\n            }] }, { type: FitBoundsService }]; }, { agmFitBounds: [{\n            type: Input\n        }] }); })();\n\nlet infoWindowId = 0;\n/**\n * AgmInfoWindow renders a info window inside a {@link AgmMarker} or standalone.\n *\n * ### Example\n * ```typescript\n * import { Component } from '@angular/core';\n *\n * @Component({\n *  selector: 'my-map-cmp',\n *  styles: [`\n *    .agm-map-container {\n *      height: 300px;\n *    }\n * `],\n *  template: `\n *    <agm-map [latitude]=\"lat\" [longitude]=\"lng\" [zoom]=\"zoom\">\n *      <agm-marker [latitude]=\"lat\" [longitude]=\"lng\" [label]=\"'M'\">\n *        <agm-info-window [disableAutoPan]=\"true\">\n *          Hi, this is the content of the <strong>info window</strong>\n *        </agm-info-window>\n *      </agm-marker>\n *    </agm-map>\n *  `\n * })\n * ```\n */\nclass AgmInfoWindow {\n    constructor(_infoWindowManager, _el) {\n        this._infoWindowManager = _infoWindowManager;\n        this._el = _el;\n        /**\n         * Sets the open state for the InfoWindow. You can also call the open() and close() methods.\n         */\n        this.isOpen = false;\n        /**\n         * Emits an event when the info window is closed.\n         */\n        this.infoWindowClose = new EventEmitter();\n        this._infoWindowAddedToManager = false;\n        this._id = (infoWindowId++).toString();\n    }\n    ngOnInit() {\n        this.content = this._el.nativeElement.querySelector('.agm-info-window-content');\n        this._infoWindowManager.addInfoWindow(this);\n        this._infoWindowAddedToManager = true;\n        this._updateOpenState();\n        this._registerEventListeners();\n    }\n    /** @internal */\n    ngOnChanges(changes) {\n        if (!this._infoWindowAddedToManager) {\n            return;\n        }\n        // tslint:disable: no-string-literal\n        if ((changes['latitude'] || changes['longitude']) && typeof this.latitude === 'number' &&\n            typeof this.longitude === 'number') {\n            this._infoWindowManager.setPosition(this);\n        }\n        if (changes['zIndex']) {\n            this._infoWindowManager.setZIndex(this);\n        }\n        if (changes['isOpen']) {\n            this._updateOpenState();\n        }\n        this._setInfoWindowOptions(changes);\n    }\n    // tslint:enable: no-string-literal\n    _registerEventListeners() {\n        this._infoWindowManager.createEventObservable('closeclick', this).subscribe(() => {\n            this.isOpen = false;\n            this.infoWindowClose.emit();\n        });\n    }\n    _updateOpenState() {\n        this.isOpen ? this.open() : this.close();\n    }\n    _setInfoWindowOptions(changes) {\n        const options = {};\n        const optionKeys = Object.keys(changes).filter(k => AgmInfoWindow._infoWindowOptionsInputs.indexOf(k) !== -1);\n        optionKeys.forEach((k) => { options[k] = changes[k].currentValue; });\n        this._infoWindowManager.setOptions(this, options);\n    }\n    /**\n     * Opens the info window.\n     */\n    open() { return this._infoWindowManager.open(this); }\n    /**\n     * Closes the info window.\n     */\n    close() {\n        return this._infoWindowManager.close(this).then(() => { this.infoWindowClose.emit(); });\n    }\n    /** @internal */\n    id() { return this._id; }\n    /** @internal */\n    toString() { return 'AgmInfoWindow-' + this._id.toString(); }\n    /** @internal */\n    ngOnDestroy() { this._infoWindowManager.deleteInfoWindow(this); }\n}\nAgmInfoWindow.ɵfac = function AgmInfoWindow_Factory(t) { return new (t || AgmInfoWindow)(ɵngcc0.ɵɵdirectiveInject(InfoWindowManager), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ElementRef)); };\nAgmInfoWindow.ɵcmp = /*@__PURE__*/ ɵngcc0.ɵɵdefineComponent({ type: AgmInfoWindow, selectors: [[\"agm-info-window\"]], inputs: { isOpen: \"isOpen\", latitude: \"latitude\", longitude: \"longitude\", disableAutoPan: \"disableAutoPan\", zIndex: \"zIndex\", maxWidth: \"maxWidth\" }, outputs: { infoWindowClose: \"infoWindowClose\" }, features: [ɵngcc0.ɵɵNgOnChangesFeature], ngContentSelectors: _c0, decls: 2, vars: 0, consts: [[1, \"agm-info-window-content\"]], template: function AgmInfoWindow_Template(rf, ctx) { if (rf & 1) {\n        ɵngcc0.ɵɵprojectionDef();\n        ɵngcc0.ɵɵelementStart(0, \"div\", 0);\n        ɵngcc0.ɵɵprojection(1);\n        ɵngcc0.ɵɵelementEnd();\n    } }, encapsulation: 2 });\nAgmInfoWindow._infoWindowOptionsInputs = ['disableAutoPan', 'maxWidth'];\nAgmInfoWindow.ctorParameters = () => [\n    { type: InfoWindowManager },\n    { type: ElementRef }\n];\nAgmInfoWindow.propDecorators = {\n    latitude: [{ type: Input }],\n    longitude: [{ type: Input }],\n    disableAutoPan: [{ type: Input }],\n    zIndex: [{ type: Input }],\n    maxWidth: [{ type: Input }],\n    isOpen: [{ type: Input }],\n    infoWindowClose: [{ type: Output }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmInfoWindow, [{\n        type: Component,\n        args: [{\n                selector: 'agm-info-window',\n                template: `<div class='agm-info-window-content'>\n      <ng-content></ng-content>\n    </div>\n  `\n            }]\n    }], function () { return [{ type: InfoWindowManager }, { type: ɵngcc0.ElementRef }]; }, { isOpen: [{\n            type: Input\n        }], infoWindowClose: [{\n            type: Output\n        }], latitude: [{\n            type: Input\n        }], longitude: [{\n            type: Input\n        }], disableAutoPan: [{\n            type: Input\n        }], zIndex: [{\n            type: Input\n        }], maxWidth: [{\n            type: Input\n        }] }); })();\n\nlet layerId$2 = 0;\nclass AgmKmlLayer {\n    constructor(_manager) {\n        this._manager = _manager;\n        this._addedToManager = false;\n        this._id = (layerId$2++).toString();\n        this._subscriptions = [];\n        /**\n         * If true, the layer receives mouse events. Default value is true.\n         */\n        this.clickable = true;\n        /**\n         * By default, the input map is centered and zoomed to the bounding box of the contents of the\n         * layer.\n         * If this option is set to true, the viewport is left unchanged, unless the map's center and zoom\n         * were never set.\n         */\n        this.preserveViewport = false;\n        /**\n         * Whether to render the screen overlays. Default true.\n         */\n        this.screenOverlays = true;\n        /**\n         * Suppress the rendering of info windows when layer features are clicked.\n         */\n        this.suppressInfoWindows = false;\n        /**\n         * The URL of the KML document to display.\n         */\n        this.url = null;\n        /**\n         * The z-index of the layer.\n         */\n        this.zIndex = null;\n        /**\n         * This event is fired when a feature in the layer is clicked.\n         */\n        this.layerClick = new EventEmitter();\n        /**\n         * This event is fired when the KML layers default viewport has changed.\n         */\n        this.defaultViewportChange = new EventEmitter();\n        /**\n         * This event is fired when the KML layer has finished loading.\n         * At this point it is safe to read the status property to determine if the layer loaded\n         * successfully.\n         */\n        this.statusChange = new EventEmitter();\n    }\n    ngOnInit() {\n        if (this._addedToManager) {\n            return;\n        }\n        this._manager.addKmlLayer(this);\n        this._addedToManager = true;\n        this._addEventListeners();\n    }\n    ngOnChanges(changes) {\n        if (!this._addedToManager) {\n            return;\n        }\n        this._updatePolygonOptions(changes);\n    }\n    _updatePolygonOptions(changes) {\n        const options = Object.keys(changes)\n            .filter(k => AgmKmlLayer._kmlLayerOptions.indexOf(k) !== -1)\n            .reduce((obj, k) => {\n            obj[k] = changes[k].currentValue;\n            return obj;\n        }, {});\n        if (Object.keys(options).length > 0) {\n            this._manager.setOptions(this, options);\n        }\n    }\n    _addEventListeners() {\n        const listeners = [\n            { name: 'click', handler: (ev) => this.layerClick.emit(ev) },\n            { name: 'defaultviewport_changed', handler: () => this.defaultViewportChange.emit() },\n            { name: 'status_changed', handler: () => this.statusChange.emit() },\n        ];\n        listeners.forEach((obj) => {\n            const os = this._manager.createEventObservable(obj.name, this).subscribe(obj.handler);\n            this._subscriptions.push(os);\n        });\n    }\n    /** @internal */\n    id() { return this._id; }\n    /** @internal */\n    toString() { return `AgmKmlLayer-${this._id.toString()}`; }\n    /** @internal */\n    ngOnDestroy() {\n        this._manager.deleteKmlLayer(this);\n        // unsubscribe all registered observable subscriptions\n        this._subscriptions.forEach(s => s.unsubscribe());\n    }\n}\nAgmKmlLayer.ɵfac = function AgmKmlLayer_Factory(t) { return new (t || AgmKmlLayer)(ɵngcc0.ɵɵdirectiveInject(KmlLayerManager)); };\nAgmKmlLayer.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmKmlLayer, selectors: [[\"agm-kml-layer\"]], inputs: { clickable: \"clickable\", preserveViewport: \"preserveViewport\", screenOverlays: \"screenOverlays\", suppressInfoWindows: \"suppressInfoWindows\", url: \"url\", zIndex: \"zIndex\" }, outputs: { layerClick: \"layerClick\", defaultViewportChange: \"defaultViewportChange\", statusChange: \"statusChange\" }, features: [ɵngcc0.ɵɵNgOnChangesFeature] });\nAgmKmlLayer._kmlLayerOptions = ['clickable', 'preserveViewport', 'screenOverlays', 'suppressInfoWindows', 'url', 'zIndex'];\nAgmKmlLayer.ctorParameters = () => [\n    { type: KmlLayerManager }\n];\nAgmKmlLayer.propDecorators = {\n    clickable: [{ type: Input }],\n    preserveViewport: [{ type: Input }],\n    screenOverlays: [{ type: Input }],\n    suppressInfoWindows: [{ type: Input }],\n    url: [{ type: Input }],\n    zIndex: [{ type: Input }],\n    layerClick: [{ type: Output }],\n    defaultViewportChange: [{ type: Output }],\n    statusChange: [{ type: Output }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmKmlLayer, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-kml-layer'\n            }]\n    }], function () { return [{ type: KmlLayerManager }]; }, { clickable: [{\n            type: Input\n        }], preserveViewport: [{\n            type: Input\n        }], screenOverlays: [{\n            type: Input\n        }], suppressInfoWindows: [{\n            type: Input\n        }], url: [{\n            type: Input\n        }], zIndex: [{\n            type: Input\n        }], layerClick: [{\n            type: Output\n        }], defaultViewportChange: [{\n            type: Output\n        }], statusChange: [{\n            type: Output\n        }] }); })();\n\nclass AgmMapControl {\n}\nAgmMapControl.ɵfac = function AgmMapControl_Factory(t) { return new (t || AgmMapControl)(); };\nAgmMapControl.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmMapControl, inputs: { position: \"position\" } });\nAgmMapControl.propDecorators = {\n    position: [{ type: Input }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmMapControl, [{\n        type: Directive\n    }], null, { position: [{\n            type: Input\n        }] }); })();\nclass AgmFullscreenControl extends AgmMapControl {\n    getOptions() {\n        return {\n            fullscreenControl: true,\n            fullscreenControlOptions: {\n                position: this.position && google.maps.ControlPosition[this.position],\n            },\n        };\n    }\n}\nAgmFullscreenControl.ɵfac = /*@__PURE__*/ function () { let ɵAgmFullscreenControl_BaseFactory; return function AgmFullscreenControl_Factory(t) { return (ɵAgmFullscreenControl_BaseFactory || (ɵAgmFullscreenControl_BaseFactory = ɵngcc0.ɵɵgetInheritedFactory(AgmFullscreenControl)))(t || AgmFullscreenControl); }; }();\nAgmFullscreenControl.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmFullscreenControl, selectors: [[\"agm-fullscreen-control\"]], features: [ɵngcc0.ɵɵProvidersFeature([{ provide: AgmMapControl, useExisting: AgmFullscreenControl }]), ɵngcc0.ɵɵInheritDefinitionFeature] });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmFullscreenControl, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-map agm-fullscreen-control',\n                providers: [{ provide: AgmMapControl, useExisting: AgmFullscreenControl }]\n            }]\n    }], null, null); })();\nclass AgmMapTypeControl extends AgmMapControl {\n    getOptions() {\n        return {\n            mapTypeControl: true,\n            mapTypeControlOptions: {\n                position: this.position && google.maps.ControlPosition[this.position],\n                style: this.style && google.maps.MapTypeControlStyle[this.style],\n                mapTypeIds: this.mapTypeIds && this.mapTypeIds.map(mapTypeId => google.maps.MapTypeId[mapTypeId]),\n            },\n        };\n    }\n}\nAgmMapTypeControl.ɵfac = /*@__PURE__*/ function () { let ɵAgmMapTypeControl_BaseFactory; return function AgmMapTypeControl_Factory(t) { return (ɵAgmMapTypeControl_BaseFactory || (ɵAgmMapTypeControl_BaseFactory = ɵngcc0.ɵɵgetInheritedFactory(AgmMapTypeControl)))(t || AgmMapTypeControl); }; }();\nAgmMapTypeControl.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmMapTypeControl, selectors: [[\"agm-map-type-control\"]], inputs: { mapTypeIds: \"mapTypeIds\", style: \"style\" }, features: [ɵngcc0.ɵɵProvidersFeature([{ provide: AgmMapControl, useExisting: AgmMapTypeControl }]), ɵngcc0.ɵɵInheritDefinitionFeature] });\nAgmMapTypeControl.propDecorators = {\n    mapTypeIds: [{ type: Input }],\n    style: [{ type: Input }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmMapTypeControl, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-map agm-map-type-control',\n                providers: [{ provide: AgmMapControl, useExisting: AgmMapTypeControl }]\n            }]\n    }], null, { mapTypeIds: [{\n            type: Input\n        }], style: [{\n            type: Input\n        }] }); })();\nclass AgmPanControl extends AgmMapControl {\n    getOptions() {\n        return {\n            panControl: true,\n            panControlOptions: {\n                position: this.position && google.maps.ControlPosition[this.position],\n            },\n        };\n    }\n}\nAgmPanControl.ɵfac = /*@__PURE__*/ function () { let ɵAgmPanControl_BaseFactory; return function AgmPanControl_Factory(t) { return (ɵAgmPanControl_BaseFactory || (ɵAgmPanControl_BaseFactory = ɵngcc0.ɵɵgetInheritedFactory(AgmPanControl)))(t || AgmPanControl); }; }();\nAgmPanControl.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmPanControl, selectors: [[\"agm-pan-control\"]], features: [ɵngcc0.ɵɵProvidersFeature([{ provide: AgmMapControl, useExisting: AgmPanControl }]), ɵngcc0.ɵɵInheritDefinitionFeature] });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmPanControl, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-map agm-pan-control',\n                providers: [{ provide: AgmMapControl, useExisting: AgmPanControl }]\n            }]\n    }], null, null); })();\nclass AgmRotateControl extends AgmMapControl {\n    getOptions() {\n        return {\n            rotateControl: true,\n            rotateControlOptions: {\n                position: this.position && google.maps.ControlPosition[this.position],\n            },\n        };\n    }\n}\nAgmRotateControl.ɵfac = /*@__PURE__*/ function () { let ɵAgmRotateControl_BaseFactory; return function AgmRotateControl_Factory(t) { return (ɵAgmRotateControl_BaseFactory || (ɵAgmRotateControl_BaseFactory = ɵngcc0.ɵɵgetInheritedFactory(AgmRotateControl)))(t || AgmRotateControl); }; }();\nAgmRotateControl.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmRotateControl, selectors: [[\"agm-rotate-control\"]], features: [ɵngcc0.ɵɵProvidersFeature([{ provide: AgmMapControl, useExisting: AgmRotateControl }]), ɵngcc0.ɵɵInheritDefinitionFeature] });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmRotateControl, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-map agm-rotate-control',\n                providers: [{ provide: AgmMapControl, useExisting: AgmRotateControl }]\n            }]\n    }], null, null); })();\nclass AgmScaleControl extends AgmMapControl {\n    getOptions() {\n        return {\n            scaleControl: true,\n        };\n    }\n}\nAgmScaleControl.ɵfac = /*@__PURE__*/ function () { let ɵAgmScaleControl_BaseFactory; return function AgmScaleControl_Factory(t) { return (ɵAgmScaleControl_BaseFactory || (ɵAgmScaleControl_BaseFactory = ɵngcc0.ɵɵgetInheritedFactory(AgmScaleControl)))(t || AgmScaleControl); }; }();\nAgmScaleControl.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmScaleControl, selectors: [[\"agm-scale-control\"]], features: [ɵngcc0.ɵɵProvidersFeature([{ provide: AgmMapControl, useExisting: AgmScaleControl }]), ɵngcc0.ɵɵInheritDefinitionFeature] });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmScaleControl, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-map agm-scale-control',\n                providers: [{ provide: AgmMapControl, useExisting: AgmScaleControl }]\n            }]\n    }], null, null); })();\nclass AgmStreetViewControl extends AgmMapControl {\n    getOptions() {\n        return {\n            streetViewControl: true,\n            streetViewControlOptions: {\n                position: this.position && google.maps.ControlPosition[this.position],\n            },\n        };\n    }\n}\nAgmStreetViewControl.ɵfac = /*@__PURE__*/ function () { let ɵAgmStreetViewControl_BaseFactory; return function AgmStreetViewControl_Factory(t) { return (ɵAgmStreetViewControl_BaseFactory || (ɵAgmStreetViewControl_BaseFactory = ɵngcc0.ɵɵgetInheritedFactory(AgmStreetViewControl)))(t || AgmStreetViewControl); }; }();\nAgmStreetViewControl.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmStreetViewControl, selectors: [[\"agm-street-view-control\"]], features: [ɵngcc0.ɵɵProvidersFeature([{ provide: AgmMapControl, useExisting: AgmStreetViewControl }]), ɵngcc0.ɵɵInheritDefinitionFeature] });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmStreetViewControl, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-map agm-street-view-control',\n                providers: [{ provide: AgmMapControl, useExisting: AgmStreetViewControl }]\n            }]\n    }], null, null); })();\nclass AgmZoomControl extends AgmMapControl {\n    getOptions() {\n        return {\n            zoomControl: true,\n            zoomControlOptions: {\n                position: this.position && google.maps.ControlPosition[this.position],\n                style: this.style && google.maps.ZoomControlStyle[this.style],\n            },\n        };\n    }\n}\nAgmZoomControl.ɵfac = /*@__PURE__*/ function () { let ɵAgmZoomControl_BaseFactory; return function AgmZoomControl_Factory(t) { return (ɵAgmZoomControl_BaseFactory || (ɵAgmZoomControl_BaseFactory = ɵngcc0.ɵɵgetInheritedFactory(AgmZoomControl)))(t || AgmZoomControl); }; }();\nAgmZoomControl.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmZoomControl, selectors: [[\"agm-zoom-control\"]], inputs: { style: \"style\" }, features: [ɵngcc0.ɵɵProvidersFeature([{ provide: AgmMapControl, useExisting: AgmZoomControl }]), ɵngcc0.ɵɵInheritDefinitionFeature] });\nAgmZoomControl.propDecorators = {\n    style: [{ type: Input }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmZoomControl, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-map agm-zoom-control',\n                providers: [{ provide: AgmMapControl, useExisting: AgmZoomControl }]\n            }]\n    }], null, { style: [{\n            type: Input\n        }] }); })();\n/**\n * AgmMap renders a Google Map.\n * **Important note**: To be able see a map in the browser, you have to define a height for the\n * element `agm-map`.\n *\n * ### Example\n * ```typescript\n * import { Component } from '@angular/core';\n *\n * @Component({\n *  selector: 'my-map-cmp',\n *  styles: [`\n *    agm-map {\n *      height: 300px;\n *    }\n * `],\n *  template: `\n *    <agm-map [latitude]=\"lat\" [longitude]=\"lng\" [zoom]=\"zoom\">\n *    </agm-map>\n *  `\n * })\n * ```\n */\nclass AgmMap {\n    constructor(_elem, _mapsWrapper, \n    // tslint:disable-next-line: ban-types\n    _platformId, _fitBoundsService, _zone) {\n        this._elem = _elem;\n        this._mapsWrapper = _mapsWrapper;\n        this._platformId = _platformId;\n        this._fitBoundsService = _fitBoundsService;\n        this._zone = _zone;\n        /**\n         * The longitude that defines the center of the map.\n         */\n        this.longitude = 0;\n        /**\n         * The latitude that defines the center of the map.\n         */\n        this.latitude = 0;\n        /**\n         * The zoom level of the map. The default zoom level is 8.\n         */\n        this.zoom = 8;\n        /**\n         * Enables/disables if map is draggable.\n         */\n        // tslint:disable-next-line:no-input-rename\n        this.draggable = true;\n        /**\n         * Enables/disables zoom and center on double click. Enabled by default.\n         */\n        this.disableDoubleClickZoom = false;\n        /**\n         * Enables/disables all default UI of the Google map. Please note: When the map is created, this\n         * value cannot get updated.\n         */\n        this.disableDefaultUI = false;\n        /**\n         * If false, disables scrollwheel zooming on the map. The scrollwheel is enabled by default.\n         */\n        this.scrollwheel = true;\n        /**\n         * If false, prevents the map from being controlled by the keyboard. Keyboard shortcuts are\n         * enabled by default.\n         */\n        this.keyboardShortcuts = true;\n        /**\n         * Styles to apply to each of the default map types. Note that for Satellite/Hybrid and Terrain\n         * modes, these styles will only apply to labels and geometry.\n         */\n        this.styles = [];\n        /**\n         * When true and the latitude and/or longitude values changes, the Google Maps panTo method is\n         * used to\n         * center the map. See: https://developers.google.com/maps/documentation/javascript/reference#Map\n         */\n        this.usePanning = false;\n        /**\n         * Sets the viewport to contain the given bounds.\n         * If this option to `true`, the bounds get automatically computed from all elements that use the {@link AgmFitBounds} directive.\n         */\n        this.fitBounds = false;\n        /**\n         * The map mapTypeId. Defaults to 'roadmap'.\n         */\n        this.mapTypeId = 'ROADMAP';\n        /**\n         * When false, map icons are not clickable. A map icon represents a point of interest,\n         * also known as a POI. By default map icons are clickable.\n         */\n        this.clickableIcons = true;\n        /**\n         * A map icon represents a point of interest, also known as a POI.\n         * When map icons are clickable by default, an info window is displayed.\n         * When this property is set to false, the info window will not be shown but the click event\n         * will still fire\n         */\n        this.showDefaultInfoWindow = true;\n        /**\n         * This setting controls how gestures on the map are handled.\n         * Allowed values:\n         * - 'cooperative' (Two-finger touch gestures pan and zoom the map. One-finger touch gestures are not handled by the map.)\n         * - 'greedy'      (All touch gestures pan or zoom the map.)\n         * - 'none'        (The map cannot be panned or zoomed by user gestures.)\n         * - 'auto'        [default] (Gesture handling is either cooperative or greedy, depending on whether the page is scrollable or not.\n         */\n        this.gestureHandling = 'auto';\n        /**\n         * Controls the automatic switching behavior for the angle of incidence of\n         * the map. The only allowed values are 0 and 45. The value 0 causes the map\n         * to always use a 0° overhead view regardless of the zoom level and\n         * viewport. The value 45 causes the tilt angle to automatically switch to\n         * 45 whenever 45° imagery is available for the current zoom level and\n         * viewport, and switch back to 0 whenever 45° imagery is not available\n         * (this is the default behavior). 45° imagery is only available for\n         * satellite and hybrid map types, within some locations, and at some zoom\n         * levels. Note: getTilt returns the current tilt angle, not the value\n         * specified by this option. Because getTilt and this option refer to\n         * different things, do not bind() the tilt property; doing so may yield\n         * unpredictable effects. (Default of AGM is 0 (disabled). Enable it with value 45.)\n         */\n        this.tilt = 0;\n        this._observableSubscriptions = [];\n        /**\n         * This event emitter gets emitted when the user clicks on the map (but not when they click on a\n         * marker or infoWindow).\n         */\n        // tslint:disable-next-line: max-line-length\n        this.mapClick = new EventEmitter();\n        /**\n         * This event emitter gets emitted when the user right-clicks on the map (but not when they click\n         * on a marker or infoWindow).\n         */\n        this.mapRightClick = new EventEmitter();\n        /**\n         * This event emitter gets emitted when the user double-clicks on the map (but not when they click\n         * on a marker or infoWindow).\n         */\n        this.mapDblClick = new EventEmitter();\n        /**\n         * This event emitter is fired when the map center changes.\n         */\n        this.centerChange = new EventEmitter();\n        /**\n         * This event is fired when the viewport bounds have changed.\n         */\n        this.boundsChange = new EventEmitter();\n        /**\n         * This event is fired when the mapTypeId property changes.\n         */\n        this.mapTypeIdChange = new EventEmitter();\n        /**\n         * This event is fired when the map becomes idle after panning or zooming.\n         */\n        this.idle = new EventEmitter();\n        /**\n         * This event is fired when the zoom level has changed.\n         */\n        this.zoomChange = new EventEmitter();\n        /**\n         * This event is fired when the google map is fully initialized.\n         * You get the google.maps.Map instance as a result of this EventEmitter.\n         */\n        this.mapReady = new EventEmitter();\n        /**\n         * This event is fired when the visible tiles have finished loading.\n         */\n        this.tilesLoaded = new EventEmitter();\n    }\n    /** @internal */\n    ngAfterContentInit() {\n        if (isPlatformServer(this._platformId)) {\n            // The code is running on the server, do nothing\n            return;\n        }\n        // todo: this should be solved with a new component and a viewChild decorator\n        const container = this._elem.nativeElement.querySelector('.agm-map-container-inner');\n        this._initMapInstance(container);\n    }\n    _initMapInstance(el) {\n        this._mapsWrapper.createMap(el, {\n            center: { lat: this.latitude || 0, lng: this.longitude || 0 },\n            zoom: this.zoom,\n            minZoom: this.minZoom,\n            maxZoom: this.maxZoom,\n            controlSize: this.controlSize,\n            disableDefaultUI: this.disableDefaultUI,\n            disableDoubleClickZoom: this.disableDoubleClickZoom,\n            scrollwheel: this.scrollwheel,\n            backgroundColor: this.backgroundColor,\n            draggable: this.draggable,\n            draggableCursor: this.draggableCursor,\n            draggingCursor: this.draggingCursor,\n            keyboardShortcuts: this.keyboardShortcuts,\n            styles: this.styles,\n            mapTypeId: this.mapTypeId.toLocaleLowerCase(),\n            clickableIcons: this.clickableIcons,\n            gestureHandling: this.gestureHandling,\n            tilt: this.tilt,\n            restriction: this.restriction,\n        })\n            .then(() => this._mapsWrapper.getNativeMap())\n            .then(map => this.mapReady.emit(map));\n        // register event listeners\n        this._handleMapCenterChange();\n        this._handleMapZoomChange();\n        this._handleMapMouseEvents();\n        this._handleBoundsChange();\n        this._handleMapTypeIdChange();\n        this._handleTilesLoadedEvent();\n        this._handleIdleEvent();\n        this._handleControlChange();\n    }\n    /** @internal */\n    ngOnDestroy() {\n        // unsubscribe all registered observable subscriptions\n        this._observableSubscriptions.forEach((s) => s.unsubscribe());\n        // remove all listeners from the map instance\n        this._mapsWrapper.clearInstanceListeners();\n        if (this._fitBoundsSubscription) {\n            this._fitBoundsSubscription.unsubscribe();\n        }\n    }\n    /* @internal */\n    ngOnChanges(changes) {\n        this._updateMapOptionsChanges(changes);\n        this._updatePosition(changes);\n    }\n    _updateMapOptionsChanges(changes) {\n        const options = {};\n        const optionKeys = Object.keys(changes).filter(k => AgmMap._mapOptionsAttributes.indexOf(k) !== -1);\n        optionKeys.forEach((k) => { options[k] = changes[k].currentValue; });\n        this._mapsWrapper.setMapOptions(options);\n    }\n    /**\n     * Triggers a resize event on the google map instance.\n     * When recenter is true, the of the google map gets called with the current lat/lng values or fitBounds value to recenter the map.\n     * Returns a promise that gets resolved after the event was triggered.\n     */\n    triggerResize(recenter = true) {\n        // Note: When we would trigger the resize event and show the map in the same turn (which is a\n        // common case for triggering a resize event), then the resize event would not\n        // work (to show the map), so we trigger the event in a timeout.\n        return new Promise((resolve) => {\n            setTimeout(() => {\n                return this._mapsWrapper.triggerMapEvent('resize').then(() => {\n                    if (recenter) {\n                        this.fitBounds != null ? this._fitBounds() : this._setCenter();\n                    }\n                    resolve();\n                });\n            });\n        });\n    }\n    _updatePosition(changes) {\n        // tslint:disable: no-string-literal\n        if (changes['latitude'] == null && changes['longitude'] == null &&\n            !changes['fitBounds']) {\n            // no position update needed\n            return;\n        }\n        // tslint:enable: no-string-literal\n        // we prefer fitBounds in changes\n        if ('fitBounds' in changes) {\n            this._fitBounds();\n            return;\n        }\n        if (typeof this.latitude !== 'number' || typeof this.longitude !== 'number') {\n            return;\n        }\n        this._setCenter();\n    }\n    _setCenter() {\n        const newCenter = {\n            lat: this.latitude,\n            lng: this.longitude,\n        };\n        if (this.usePanning) {\n            this._mapsWrapper.panTo(newCenter);\n        }\n        else {\n            this._mapsWrapper.setCenter(newCenter);\n        }\n    }\n    _fitBounds() {\n        switch (this.fitBounds) {\n            case true:\n                this._subscribeToFitBoundsUpdates();\n                break;\n            case false:\n                if (this._fitBoundsSubscription) {\n                    this._fitBoundsSubscription.unsubscribe();\n                }\n                break;\n            default:\n                if (this._fitBoundsSubscription) {\n                    this._fitBoundsSubscription.unsubscribe();\n                }\n                this._updateBounds(this.fitBounds, this.fitBoundsPadding);\n        }\n    }\n    _subscribeToFitBoundsUpdates() {\n        this._zone.runOutsideAngular(() => {\n            this._fitBoundsSubscription = this._fitBoundsService.getBounds$().subscribe(b => {\n                this._zone.run(() => this._updateBounds(b, this.fitBoundsPadding));\n            });\n        });\n    }\n    _updateBounds(bounds, padding) {\n        if (!bounds) {\n            return;\n        }\n        if (this._isLatLngBoundsLiteral(bounds) && typeof google !== 'undefined' && google && google.maps && google.maps.LatLngBounds) {\n            const newBounds = new google.maps.LatLngBounds();\n            newBounds.union(bounds);\n            bounds = newBounds;\n        }\n        if (this.usePanning) {\n            this._mapsWrapper.panToBounds(bounds, padding);\n            return;\n        }\n        this._mapsWrapper.fitBounds(bounds, padding);\n    }\n    _isLatLngBoundsLiteral(bounds) {\n        return bounds != null && bounds.extend === undefined;\n    }\n    _handleMapCenterChange() {\n        const s = this._mapsWrapper.subscribeToMapEvent('center_changed').subscribe(() => {\n            this._mapsWrapper.getCenter().then((center) => {\n                this.latitude = center.lat();\n                this.longitude = center.lng();\n                this.centerChange.emit({ lat: this.latitude, lng: this.longitude });\n            });\n        });\n        this._observableSubscriptions.push(s);\n    }\n    _handleBoundsChange() {\n        const s = this._mapsWrapper.subscribeToMapEvent('bounds_changed').subscribe(() => {\n            this._mapsWrapper.getBounds().then((bounds) => { this.boundsChange.emit(bounds); });\n        });\n        this._observableSubscriptions.push(s);\n    }\n    _handleMapTypeIdChange() {\n        const s = this._mapsWrapper.subscribeToMapEvent('maptypeid_changed').subscribe(() => {\n            this._mapsWrapper.getMapTypeId().then((mapTypeId) => { this.mapTypeIdChange.emit(mapTypeId); });\n        });\n        this._observableSubscriptions.push(s);\n    }\n    _handleMapZoomChange() {\n        const s = this._mapsWrapper.subscribeToMapEvent('zoom_changed').subscribe(() => {\n            this._mapsWrapper.getZoom().then((z) => {\n                this.zoom = z;\n                this.zoomChange.emit(z);\n            });\n        });\n        this._observableSubscriptions.push(s);\n    }\n    _handleIdleEvent() {\n        const s = this._mapsWrapper.subscribeToMapEvent('idle').subscribe(() => { this.idle.emit(void 0); });\n        this._observableSubscriptions.push(s);\n    }\n    _handleTilesLoadedEvent() {\n        const s = this._mapsWrapper.subscribeToMapEvent('tilesloaded').subscribe(() => this.tilesLoaded.emit(void 0));\n        this._observableSubscriptions.push(s);\n    }\n    _handleMapMouseEvents() {\n        const events = [\n            { name: 'click', emitter: this.mapClick },\n            { name: 'rightclick', emitter: this.mapRightClick },\n            { name: 'dblclick', emitter: this.mapDblClick },\n        ];\n        events.forEach(e => {\n            const s = this._mapsWrapper.subscribeToMapEvent(e.name).subscribe(([event]) => {\n                // the placeId will be undefined in case the event was not an IconMouseEvent (google types)\n                if (event.placeId && !this.showDefaultInfoWindow) {\n                    event.stop();\n                }\n                e.emitter.emit(event);\n            });\n            this._observableSubscriptions.push(s);\n        });\n    }\n    _handleControlChange() {\n        this._setControls();\n        this.mapControls.changes.subscribe(() => this._setControls());\n    }\n    _setControls() {\n        const controlOptions = {\n            fullscreenControl: !this.disableDefaultUI,\n            mapTypeControl: false,\n            panControl: false,\n            rotateControl: false,\n            scaleControl: false,\n            streetViewControl: !this.disableDefaultUI,\n            zoomControl: !this.disableDefaultUI,\n        };\n        this._mapsWrapper.getNativeMap().then(() => {\n            this.mapControls.forEach(control => Object.assign(controlOptions, control.getOptions()));\n            this._mapsWrapper.setMapOptions(controlOptions);\n        });\n    }\n}\nAgmMap.ɵfac = function AgmMap_Factory(t) { return new (t || AgmMap)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ElementRef), ɵngcc0.ɵɵdirectiveInject(GoogleMapsAPIWrapper), ɵngcc0.ɵɵdirectiveInject(PLATFORM_ID), ɵngcc0.ɵɵdirectiveInject(FitBoundsService), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.NgZone)); };\nAgmMap.ɵcmp = /*@__PURE__*/ ɵngcc0.ɵɵdefineComponent({ type: AgmMap, selectors: [[\"agm-map\"]], contentQueries: function AgmMap_ContentQueries(rf, ctx, dirIndex) { if (rf & 1) {\n        ɵngcc0.ɵɵcontentQuery(dirIndex, AgmMapControl, 4);\n    } if (rf & 2) {\n        let _t;\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.mapControls = _t);\n    } }, inputs: { longitude: \"longitude\", latitude: \"latitude\", zoom: \"zoom\", draggable: [\"mapDraggable\", \"draggable\"], disableDoubleClickZoom: \"disableDoubleClickZoom\", disableDefaultUI: \"disableDefaultUI\", scrollwheel: \"scrollwheel\", keyboardShortcuts: \"keyboardShortcuts\", styles: \"styles\", usePanning: \"usePanning\", fitBounds: \"fitBounds\", mapTypeId: \"mapTypeId\", clickableIcons: \"clickableIcons\", showDefaultInfoWindow: \"showDefaultInfoWindow\", gestureHandling: \"gestureHandling\", tilt: \"tilt\", minZoom: \"minZoom\", maxZoom: \"maxZoom\", controlSize: \"controlSize\", backgroundColor: \"backgroundColor\", draggableCursor: \"draggableCursor\", draggingCursor: \"draggingCursor\", fitBoundsPadding: \"fitBoundsPadding\", restriction: \"restriction\" }, outputs: { mapClick: \"mapClick\", mapRightClick: \"mapRightClick\", mapDblClick: \"mapDblClick\", centerChange: \"centerChange\", boundsChange: \"boundsChange\", mapTypeIdChange: \"mapTypeIdChange\", idle: \"idle\", zoomChange: \"zoomChange\", mapReady: \"mapReady\", tilesLoaded: \"tilesLoaded\" }, features: [ɵngcc0.ɵɵProvidersFeature([\n            CircleManager,\n            DataLayerManager,\n            DataLayerManager,\n            FitBoundsService,\n            GoogleMapsAPIWrapper,\n            InfoWindowManager,\n            KmlLayerManager,\n            LayerManager,\n            MarkerManager,\n            PolygonManager,\n            PolylineManager,\n            RectangleManager,\n        ]), ɵngcc0.ɵɵNgOnChangesFeature], ngContentSelectors: _c0, decls: 3, vars: 0, consts: [[1, \"agm-map-container-inner\", \"sebm-google-map-container-inner\"], [1, \"agm-map-content\"]], template: function AgmMap_Template(rf, ctx) { if (rf & 1) {\n        ɵngcc0.ɵɵprojectionDef();\n        ɵngcc0.ɵɵelement(0, \"div\", 0);\n        ɵngcc0.ɵɵelementStart(1, \"div\", 1);\n        ɵngcc0.ɵɵprojection(2);\n        ɵngcc0.ɵɵelementEnd();\n    } }, styles: [\".agm-map-container-inner[_ngcontent-%COMP%] {\\n      width: inherit;\\n      height: inherit;\\n    }\\n    .agm-map-content[_ngcontent-%COMP%] {\\n      display:none;\\n    }\"] });\n/**\n * Map option attributes that can change over time\n */\nAgmMap._mapOptionsAttributes = [\n    'disableDoubleClickZoom', 'scrollwheel', 'draggable', 'draggableCursor', 'draggingCursor',\n    'keyboardShortcuts', 'styles', 'zoom', 'minZoom', 'maxZoom', 'mapTypeId', 'clickableIcons',\n    'gestureHandling', 'tilt', 'restriction',\n];\nAgmMap.ctorParameters = () => [\n    { type: ElementRef },\n    { type: GoogleMapsAPIWrapper },\n    { type: Object, decorators: [{ type: Inject, args: [PLATFORM_ID,] }] },\n    { type: FitBoundsService },\n    { type: NgZone }\n];\nAgmMap.propDecorators = {\n    longitude: [{ type: Input }],\n    latitude: [{ type: Input }],\n    zoom: [{ type: Input }],\n    minZoom: [{ type: Input }],\n    maxZoom: [{ type: Input }],\n    controlSize: [{ type: Input }],\n    draggable: [{ type: Input, args: ['mapDraggable',] }],\n    disableDoubleClickZoom: [{ type: Input }],\n    disableDefaultUI: [{ type: Input }],\n    scrollwheel: [{ type: Input }],\n    backgroundColor: [{ type: Input }],\n    draggableCursor: [{ type: Input }],\n    draggingCursor: [{ type: Input }],\n    keyboardShortcuts: [{ type: Input }],\n    styles: [{ type: Input }],\n    usePanning: [{ type: Input }],\n    fitBounds: [{ type: Input }],\n    fitBoundsPadding: [{ type: Input }],\n    mapTypeId: [{ type: Input }],\n    clickableIcons: [{ type: Input }],\n    showDefaultInfoWindow: [{ type: Input }],\n    gestureHandling: [{ type: Input }],\n    tilt: [{ type: Input }],\n    restriction: [{ type: Input }],\n    mapClick: [{ type: Output }],\n    mapRightClick: [{ type: Output }],\n    mapDblClick: [{ type: Output }],\n    centerChange: [{ type: Output }],\n    boundsChange: [{ type: Output }],\n    mapTypeIdChange: [{ type: Output }],\n    idle: [{ type: Output }],\n    zoomChange: [{ type: Output }],\n    mapReady: [{ type: Output }],\n    tilesLoaded: [{ type: Output }],\n    mapControls: [{ type: ContentChildren, args: [AgmMapControl,] }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmMap, [{\n        type: Component,\n        args: [{ selector: 'agm-map', providers: [\n                    CircleManager,\n                    DataLayerManager,\n                    DataLayerManager,\n                    FitBoundsService,\n                    GoogleMapsAPIWrapper,\n                    InfoWindowManager,\n                    KmlLayerManager,\n                    LayerManager,\n                    MarkerManager,\n                    PolygonManager,\n                    PolylineManager,\n                    RectangleManager,\n                ], template: `\n              <div class='agm-map-container-inner sebm-google-map-container-inner'></div>\n              <div class='agm-map-content'>\n                <ng-content></ng-content>\n              </div>\n  `, styles: [\"\\n    .agm-map-container-inner {\\n      width: inherit;\\n      height: inherit;\\n    }\\n    .agm-map-content {\\n      display:none;\\n    }\\n  \"] }]\n    }], function () { return [{ type: ɵngcc0.ElementRef }, { type: GoogleMapsAPIWrapper }, { type: Object, decorators: [{\n                type: Inject,\n                args: [PLATFORM_ID]\n            }] }, { type: FitBoundsService }, { type: ɵngcc0.NgZone }]; }, { longitude: [{\n            type: Input\n        }], latitude: [{\n            type: Input\n        }], zoom: [{\n            type: Input\n        }], draggable: [{\n            type: Input,\n            args: ['mapDraggable']\n        }], disableDoubleClickZoom: [{\n            type: Input\n        }], disableDefaultUI: [{\n            type: Input\n        }], scrollwheel: [{\n            type: Input\n        }], keyboardShortcuts: [{\n            type: Input\n        }], styles: [{\n            type: Input\n        }], usePanning: [{\n            type: Input\n        }], fitBounds: [{\n            type: Input\n        }], mapTypeId: [{\n            type: Input\n        }], clickableIcons: [{\n            type: Input\n        }], showDefaultInfoWindow: [{\n            type: Input\n        }], gestureHandling: [{\n            type: Input\n        }], tilt: [{\n            type: Input\n        }], mapClick: [{\n            type: Output\n        }], mapRightClick: [{\n            type: Output\n        }], mapDblClick: [{\n            type: Output\n        }], centerChange: [{\n            type: Output\n        }], boundsChange: [{\n            type: Output\n        }], mapTypeIdChange: [{\n            type: Output\n        }], idle: [{\n            type: Output\n        }], zoomChange: [{\n            type: Output\n        }], mapReady: [{\n            type: Output\n        }], tilesLoaded: [{\n            type: Output\n        }], minZoom: [{\n            type: Input\n        }], maxZoom: [{\n            type: Input\n        }], controlSize: [{\n            type: Input\n        }], backgroundColor: [{\n            type: Input\n        }], draggableCursor: [{\n            type: Input\n        }], draggingCursor: [{\n            type: Input\n        }], fitBoundsPadding: [{\n            type: Input\n        }], restriction: [{\n            type: Input\n        }], mapControls: [{\n            type: ContentChildren,\n            args: [AgmMapControl]\n        }] }); })();\n\nlet markerId = 0;\n/**\n * AgmMarker renders a map marker inside a {@link AgmMap}.\n *\n * ### Example\n * ```typescript\n * import { Component } from '@angular/core';\n *\n * @Component({\n *  selector: 'my-map-cmp',\n *  styles: [`\n *    .agm-map-container {\n *      height: 300px;\n *    }\n * `],\n *  template: `\n *    <agm-map [latitude]=\"lat\" [longitude]=\"lng\" [zoom]=\"zoom\">\n *      <agm-marker [latitude]=\"lat\" [longitude]=\"lng\" [label]=\"'M'\">\n *      </agm-marker>\n *    </agm-map>\n *  `\n * })\n * ```\n */\nclass AgmMarker {\n    constructor(_markerManager) {\n        this._markerManager = _markerManager;\n        /**\n         * If true, the marker can be dragged. Default value is false.\n         */\n        // tslint:disable-next-line:no-input-rename\n        this.draggable = false;\n        /**\n         * If true, the marker is visible\n         */\n        this.visible = true;\n        /**\n         * Whether to automatically open the child info window when the marker is clicked.\n         */\n        this.openInfoWindow = true;\n        /**\n         * The marker's opacity between 0.0 and 1.0.\n         */\n        this.opacity = 1;\n        /**\n         * All markers are displayed on the map in order of their zIndex, with higher values displaying in\n         * front of markers with lower values. By default, markers are displayed according to their\n         * vertical position on screen, with lower markers appearing in front of markers further up the\n         * screen.\n         */\n        this.zIndex = 1;\n        /**\n         * If true, the marker can be clicked. Default value is true.\n         */\n        // tslint:disable-next-line:no-input-rename\n        this.clickable = true;\n        /**\n         * This event is fired when the marker's animation property changes.\n         */\n        this.animationChange = new EventEmitter();\n        /**\n         * This event emitter gets emitted when the user clicks on the marker.\n         */\n        this.markerClick = new EventEmitter();\n        /**\n         * This event emitter gets emitted when the user clicks twice on the marker.\n         */\n        this.markerDblClick = new EventEmitter();\n        /**\n         * This event is fired when the user rightclicks on the marker.\n         */\n        this.markerRightClick = new EventEmitter();\n        /**\n         * This event is fired when the user starts dragging the marker.\n         */\n        this.dragStart = new EventEmitter();\n        /**\n         * This event is repeatedly fired while the user drags the marker.\n         */\n        // tslint:disable-next-line: no-output-native\n        this.drag = new EventEmitter();\n        /**\n         * This event is fired when the user stops dragging the marker.\n         */\n        this.dragEnd = new EventEmitter();\n        /**\n         * This event is fired when the user mouses over the marker.\n         */\n        this.mouseOver = new EventEmitter();\n        /**\n         * This event is fired when the user mouses outside the marker.\n         */\n        this.mouseOut = new EventEmitter();\n        /** @internal */\n        this.infoWindow = new QueryList();\n        this._markerAddedToManger = false;\n        this._observableSubscriptions = [];\n        this._fitBoundsDetails$ = new ReplaySubject(1);\n        this._id = (markerId++).toString();\n    }\n    /* @internal */\n    ngAfterContentInit() {\n        this.handleInfoWindowUpdate();\n        this.infoWindow.changes.subscribe(() => this.handleInfoWindowUpdate());\n    }\n    handleInfoWindowUpdate() {\n        if (this.infoWindow.length > 1) {\n            throw new Error('Expected no more than one info window.');\n        }\n        this.infoWindow.forEach(marker => {\n            marker.hostMarker = this;\n        });\n    }\n    /** @internal */\n    ngOnChanges(changes) {\n        if (typeof this.latitude === 'string') {\n            this.latitude = Number(this.latitude);\n        }\n        if (typeof this.longitude === 'string') {\n            this.longitude = Number(this.longitude);\n        }\n        if (typeof this.latitude !== 'number' || typeof this.longitude !== 'number') {\n            return;\n        }\n        if (!this._markerAddedToManger) {\n            this._markerManager.addMarker(this);\n            this._updateFitBoundsDetails();\n            this._markerAddedToManger = true;\n            this._addEventListeners();\n            return;\n        }\n        // tslint:disable: no-string-literal\n        if (changes['latitude'] || changes['longitude']) {\n            this._markerManager.updateMarkerPosition(this);\n            this._updateFitBoundsDetails();\n        }\n        if (changes['title']) {\n            this._markerManager.updateTitle(this);\n        }\n        if (changes['label']) {\n            this._markerManager.updateLabel(this);\n        }\n        if (changes['draggable']) {\n            this._markerManager.updateDraggable(this);\n        }\n        if (changes['iconUrl']) {\n            this._markerManager.updateIcon(this);\n        }\n        if (changes['opacity']) {\n            this._markerManager.updateOpacity(this);\n        }\n        if (changes['visible']) {\n            this._markerManager.updateVisible(this);\n        }\n        if (changes['zIndex']) {\n            this._markerManager.updateZIndex(this);\n        }\n        if (changes['clickable']) {\n            this._markerManager.updateClickable(this);\n        }\n        if (changes['animation']) {\n            this._markerManager.updateAnimation(this);\n        }\n        // tslint:enable: no-string-literal\n    }\n    /** @internal */\n    getFitBoundsDetails$() {\n        return this._fitBoundsDetails$.asObservable();\n    }\n    _updateFitBoundsDetails() {\n        this._fitBoundsDetails$.next({ latLng: { lat: this.latitude, lng: this.longitude } });\n    }\n    _addEventListeners() {\n        const cs = this._markerManager.createEventObservable('click', this).subscribe(() => {\n            if (this.openInfoWindow) {\n                this.infoWindow.forEach(infoWindow => infoWindow.open());\n            }\n            this.markerClick.emit(this);\n        });\n        this._observableSubscriptions.push(cs);\n        const dcs = this._markerManager.createEventObservable('dblclick', this).subscribe(() => {\n            this.markerDblClick.emit(null);\n        });\n        this._observableSubscriptions.push(dcs);\n        const rc = this._markerManager.createEventObservable('rightclick', this).subscribe(() => {\n            this.markerRightClick.emit(null);\n        });\n        this._observableSubscriptions.push(rc);\n        const ds = this._markerManager.createEventObservable('dragstart', this)\n            .subscribe(e => this.dragStart.emit(e));\n        this._observableSubscriptions.push(ds);\n        const d = this._markerManager.createEventObservable('drag', this)\n            .subscribe(e => this.drag.emit(e));\n        this._observableSubscriptions.push(d);\n        const de = this._markerManager.createEventObservable('dragend', this)\n            .subscribe(e => this.dragEnd.emit(e));\n        this._observableSubscriptions.push(de);\n        const mover = this._markerManager.createEventObservable('mouseover', this)\n            .subscribe(e => this.mouseOver.emit(e));\n        this._observableSubscriptions.push(mover);\n        const mout = this._markerManager.createEventObservable('mouseout', this)\n            .subscribe(e => this.mouseOut.emit(e));\n        this._observableSubscriptions.push(mout);\n        const anChng = this._markerManager.createEventObservable('animation_changed', this)\n            .subscribe(() => {\n            this.animationChange.emit(this.animation);\n        });\n        this._observableSubscriptions.push(anChng);\n    }\n    /** @internal */\n    id() { return this._id; }\n    /** @internal */\n    toString() { return 'AgmMarker-' + this._id.toString(); }\n    /** @internal */\n    ngOnDestroy() {\n        this._markerManager.deleteMarker(this);\n        // unsubscribe all registered observable subscriptions\n        this._observableSubscriptions.forEach((s) => s.unsubscribe());\n    }\n}\nAgmMarker.ɵfac = function AgmMarker_Factory(t) { return new (t || AgmMarker)(ɵngcc0.ɵɵdirectiveInject(MarkerManager)); };\nAgmMarker.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmMarker, selectors: [[\"agm-marker\"]], contentQueries: function AgmMarker_ContentQueries(rf, ctx, dirIndex) { if (rf & 1) {\n        ɵngcc0.ɵɵcontentQuery(dirIndex, AgmInfoWindow, 4);\n    } if (rf & 2) {\n        let _t;\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.infoWindow = _t);\n    } }, inputs: { draggable: [\"markerDraggable\", \"draggable\"], visible: \"visible\", openInfoWindow: \"openInfoWindow\", opacity: \"opacity\", zIndex: \"zIndex\", clickable: [\"markerClickable\", \"clickable\"], latitude: \"latitude\", longitude: \"longitude\", title: \"title\", label: \"label\", iconUrl: \"iconUrl\", animation: \"animation\" }, outputs: { animationChange: \"animationChange\", markerClick: \"markerClick\", markerDblClick: \"markerDblClick\", markerRightClick: \"markerRightClick\", dragStart: \"dragStart\", drag: \"drag\", dragEnd: \"dragEnd\", mouseOver: \"mouseOver\", mouseOut: \"mouseOut\" }, features: [ɵngcc0.ɵɵProvidersFeature([\n            { provide: FitBoundsAccessor, useExisting: forwardRef(() => AgmMarker) },\n        ]), ɵngcc0.ɵɵNgOnChangesFeature] });\nAgmMarker.ctorParameters = () => [\n    { type: MarkerManager }\n];\nAgmMarker.propDecorators = {\n    latitude: [{ type: Input }],\n    longitude: [{ type: Input }],\n    title: [{ type: Input }],\n    label: [{ type: Input }],\n    draggable: [{ type: Input, args: ['markerDraggable',] }],\n    iconUrl: [{ type: Input }],\n    visible: [{ type: Input }],\n    openInfoWindow: [{ type: Input }],\n    opacity: [{ type: Input }],\n    zIndex: [{ type: Input }],\n    clickable: [{ type: Input, args: ['markerClickable',] }],\n    animation: [{ type: Input }],\n    animationChange: [{ type: Output }],\n    markerClick: [{ type: Output }],\n    markerDblClick: [{ type: Output }],\n    markerRightClick: [{ type: Output }],\n    dragStart: [{ type: Output }],\n    drag: [{ type: Output }],\n    dragEnd: [{ type: Output }],\n    mouseOver: [{ type: Output }],\n    mouseOut: [{ type: Output }],\n    infoWindow: [{ type: ContentChildren, args: [AgmInfoWindow,] }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmMarker, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-marker',\n                providers: [\n                    { provide: FitBoundsAccessor, useExisting: forwardRef(() => AgmMarker) },\n                ]\n            }]\n    }], function () { return [{ type: MarkerManager }]; }, { draggable: [{\n            type: Input,\n            args: ['markerDraggable']\n        }], visible: [{\n            type: Input\n        }], openInfoWindow: [{\n            type: Input\n        }], opacity: [{\n            type: Input\n        }], zIndex: [{\n            type: Input\n        }], clickable: [{\n            type: Input,\n            args: ['markerClickable']\n        }], animationChange: [{\n            type: Output\n        }], markerClick: [{\n            type: Output\n        }], markerDblClick: [{\n            type: Output\n        }], markerRightClick: [{\n            type: Output\n        }], dragStart: [{\n            type: Output\n        }], drag: [{\n            type: Output\n        }], dragEnd: [{\n            type: Output\n        }], mouseOver: [{\n            type: Output\n        }], mouseOut: [{\n            type: Output\n        }], infoWindow: [{\n            type: ContentChildren,\n            args: [AgmInfoWindow]\n        }], latitude: [{\n            type: Input\n        }], longitude: [{\n            type: Input\n        }], title: [{\n            type: Input\n        }], label: [{\n            type: Input\n        }], iconUrl: [{\n            type: Input\n        }], animation: [{\n            type: Input\n        }] }); })();\n\n/**\n * AgmPolygon renders a polygon on a {@link AgmMap}\n *\n * ### Example\n * ```typescript\n * import { Component } from '@angular/core';\n *\n * @Component({\n *  selector: 'my-map-cmp',\n *  styles: [`\n *    agm-map {\n *      height: 300px;\n *    }\n * `],\n *  template: `\n *    <agm-map [latitude]=\"lat\" [longitude]=\"lng\" [zoom]=\"zoom\">\n *      <agm-polygon [paths]=\"paths\">\n *      </agm-polygon>\n *    </agm-map>\n *  `\n * })\n * export class MyMapCmp {\n *   lat: number = 0;\n *   lng: number = 0;\n *   zoom: number = 10;\n *   paths: LatLngLiteral[] = [\n *     { lat: 0,  lng: 10 },\n *     { lat: 0,  lng: 20 },\n *     { lat: 10, lng: 20 },\n *     { lat: 10, lng: 10 },\n *     { lat: 0,  lng: 10 }\n *   ]\n *   // Nesting paths will create a hole where they overlap;\n *   nestedPaths: LatLngLiteral[][] = [[\n *     { lat: 0,  lng: 10 },\n *     { lat: 0,  lng: 20 },\n *     { lat: 10, lng: 20 },\n *     { lat: 10, lng: 10 },\n *     { lat: 0,  lng: 10 }\n *   ], [\n *     { lat: 0, lng: 15 },\n *     { lat: 0, lng: 20 },\n *     { lat: 5, lng: 20 },\n *     { lat: 5, lng: 15 },\n *     { lat: 0, lng: 15 }\n *   ]]\n * }\n * ```\n */\nclass AgmPolygon {\n    constructor(_polygonManager) {\n        this._polygonManager = _polygonManager;\n        /**\n         * Indicates whether this Polygon handles mouse events. Defaults to true.\n         */\n        this.clickable = true;\n        /**\n         * If set to true, the user can drag this shape over the map. The geodesic\n         * property defines the mode of dragging. Defaults to false.\n         */\n        // tslint:disable-next-line:no-input-rename\n        this.draggable = false;\n        /**\n         * If set to true, the user can edit this shape by dragging the control\n         * points shown at the vertices and on each segment. Defaults to false.\n         */\n        this.editable = false;\n        /**\n         * When true, edges of the polygon are interpreted as geodesic and will\n         * follow the curvature of the Earth. When false, edges of the polygon are\n         * rendered as straight lines in screen space. Note that the shape of a\n         * geodesic polygon may appear to change when dragged, as the dimensions\n         * are maintained relative to the surface of the earth. Defaults to false.\n         */\n        this.geodesic = false;\n        /**\n         * The ordered sequence of coordinates that designates a closed loop.\n         * Unlike polylines, a polygon may consist of one or more paths.\n         *  As a result, the paths property may specify one or more arrays of\n         * LatLng coordinates. Paths are closed automatically; do not repeat the\n         * first vertex of the path as the last vertex. Simple polygons may be\n         * defined using a single array of LatLngs. More complex polygons may\n         * specify an array of arrays. Any simple arrays are converted into Arrays.\n         * Inserting or removing LatLngs from the Array will automatically update\n         * the polygon on the map.\n         */\n        this.paths = [];\n        /**\n         * This event is fired when the DOM click event is fired on the Polygon.\n         */\n        this.polyClick = new EventEmitter();\n        /**\n         * This event is fired when the DOM dblclick event is fired on the Polygon.\n         */\n        this.polyDblClick = new EventEmitter();\n        /**\n         * This event is repeatedly fired while the user drags the polygon.\n         */\n        this.polyDrag = new EventEmitter();\n        /**\n         * This event is fired when the user stops dragging the polygon.\n         */\n        this.polyDragEnd = new EventEmitter();\n        /**\n         * This event is fired when the user starts dragging the polygon.\n         */\n        this.polyDragStart = new EventEmitter();\n        /**\n         * This event is fired when the DOM mousedown event is fired on the Polygon.\n         */\n        this.polyMouseDown = new EventEmitter();\n        /**\n         * This event is fired when the DOM mousemove event is fired on the Polygon.\n         */\n        this.polyMouseMove = new EventEmitter();\n        /**\n         * This event is fired on Polygon mouseout.\n         */\n        this.polyMouseOut = new EventEmitter();\n        /**\n         * This event is fired on Polygon mouseover.\n         */\n        this.polyMouseOver = new EventEmitter();\n        /**\n         * This event is fired whe the DOM mouseup event is fired on the Polygon\n         */\n        this.polyMouseUp = new EventEmitter();\n        /**\n         * This event is fired when the Polygon is right-clicked on.\n         */\n        this.polyRightClick = new EventEmitter();\n        /**\n         * This event is fired after Polygon first path changes.\n         */\n        this.polyPathsChange = new EventEmitter();\n        this._polygonAddedToManager = false;\n        this._subscriptions = [];\n    }\n    /** @internal */\n    ngAfterContentInit() {\n        if (!this._polygonAddedToManager) {\n            this._init();\n        }\n    }\n    ngOnChanges(changes) {\n        if (!this._polygonAddedToManager) {\n            this._init();\n            return;\n        }\n        this._polygonManager.setPolygonOptions(this, this._updatePolygonOptions(changes));\n    }\n    _init() {\n        this._polygonManager.addPolygon(this);\n        this._polygonAddedToManager = true;\n        this._addEventListeners();\n    }\n    _addEventListeners() {\n        const handlers = [\n            { name: 'click', handler: (ev) => this.polyClick.emit(ev) },\n            { name: 'dblclick', handler: (ev) => this.polyDblClick.emit(ev) },\n            { name: 'drag', handler: (ev) => this.polyDrag.emit(ev) },\n            { name: 'dragend', handler: (ev) => this.polyDragEnd.emit(ev) },\n            { name: 'dragstart', handler: (ev) => this.polyDragStart.emit(ev) },\n            { name: 'mousedown', handler: (ev) => this.polyMouseDown.emit(ev) },\n            { name: 'mousemove', handler: (ev) => this.polyMouseMove.emit(ev) },\n            { name: 'mouseout', handler: (ev) => this.polyMouseOut.emit(ev) },\n            { name: 'mouseover', handler: (ev) => this.polyMouseOver.emit(ev) },\n            { name: 'mouseup', handler: (ev) => this.polyMouseUp.emit(ev) },\n            { name: 'rightclick', handler: (ev) => this.polyRightClick.emit(ev) },\n        ];\n        handlers.forEach((obj) => {\n            const os = this._polygonManager.createEventObservable(obj.name, this).subscribe(obj.handler);\n            this._subscriptions.push(os);\n        });\n        this._polygonManager.createPathEventObservable(this)\n            .then(paths$ => {\n            const os = paths$.subscribe(pathEvent => this.polyPathsChange.emit(pathEvent));\n            this._subscriptions.push(os);\n        });\n    }\n    _updatePolygonOptions(changes) {\n        return Object.keys(changes)\n            .filter(k => AgmPolygon._polygonOptionsAttributes.indexOf(k) !== -1)\n            .reduce((obj, k) => {\n            obj[k] = changes[k].currentValue;\n            return obj;\n        }, {});\n    }\n    /** @internal */\n    id() { return this._id; }\n    /** @internal */\n    ngOnDestroy() {\n        this._polygonManager.deletePolygon(this);\n        // unsubscribe all registered observable subscriptions\n        this._subscriptions.forEach((s) => s.unsubscribe());\n    }\n    getPath() {\n        return this._polygonManager.getPath(this);\n    }\n    getPaths() {\n        return this._polygonManager.getPaths(this);\n    }\n}\nAgmPolygon.ɵfac = function AgmPolygon_Factory(t) { return new (t || AgmPolygon)(ɵngcc0.ɵɵdirectiveInject(PolygonManager)); };\nAgmPolygon.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmPolygon, selectors: [[\"agm-polygon\"]], inputs: { clickable: \"clickable\", draggable: [\"polyDraggable\", \"draggable\"], editable: \"editable\", geodesic: \"geodesic\", paths: \"paths\", fillColor: \"fillColor\", fillOpacity: \"fillOpacity\", strokeColor: \"strokeColor\", strokeOpacity: \"strokeOpacity\", strokeWeight: \"strokeWeight\", visible: \"visible\", zIndex: \"zIndex\" }, outputs: { polyClick: \"polyClick\", polyDblClick: \"polyDblClick\", polyDrag: \"polyDrag\", polyDragEnd: \"polyDragEnd\", polyDragStart: \"polyDragStart\", polyMouseDown: \"polyMouseDown\", polyMouseMove: \"polyMouseMove\", polyMouseOut: \"polyMouseOut\", polyMouseOver: \"polyMouseOver\", polyMouseUp: \"polyMouseUp\", polyRightClick: \"polyRightClick\", polyPathsChange: \"polyPathsChange\" }, features: [ɵngcc0.ɵɵNgOnChangesFeature] });\nAgmPolygon._polygonOptionsAttributes = [\n    'clickable', 'draggable', 'editable', 'fillColor', 'fillOpacity', 'geodesic', 'icon', 'map',\n    'paths', 'strokeColor', 'strokeOpacity', 'strokeWeight', 'visible', 'zIndex', 'draggable',\n    'editable', 'visible',\n];\nAgmPolygon.ctorParameters = () => [\n    { type: PolygonManager }\n];\nAgmPolygon.propDecorators = {\n    clickable: [{ type: Input }],\n    draggable: [{ type: Input, args: ['polyDraggable',] }],\n    editable: [{ type: Input }],\n    fillColor: [{ type: Input }],\n    fillOpacity: [{ type: Input }],\n    geodesic: [{ type: Input }],\n    paths: [{ type: Input }],\n    strokeColor: [{ type: Input }],\n    strokeOpacity: [{ type: Input }],\n    strokeWeight: [{ type: Input }],\n    visible: [{ type: Input }],\n    zIndex: [{ type: Input }],\n    polyClick: [{ type: Output }],\n    polyDblClick: [{ type: Output }],\n    polyDrag: [{ type: Output }],\n    polyDragEnd: [{ type: Output }],\n    polyDragStart: [{ type: Output }],\n    polyMouseDown: [{ type: Output }],\n    polyMouseMove: [{ type: Output }],\n    polyMouseOut: [{ type: Output }],\n    polyMouseOver: [{ type: Output }],\n    polyMouseUp: [{ type: Output }],\n    polyRightClick: [{ type: Output }],\n    polyPathsChange: [{ type: Output }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmPolygon, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-polygon'\n            }]\n    }], function () { return [{ type: PolygonManager }]; }, { clickable: [{\n            type: Input\n        }], draggable: [{\n            type: Input,\n            args: ['polyDraggable']\n        }], editable: [{\n            type: Input\n        }], geodesic: [{\n            type: Input\n        }], paths: [{\n            type: Input\n        }], polyClick: [{\n            type: Output\n        }], polyDblClick: [{\n            type: Output\n        }], polyDrag: [{\n            type: Output\n        }], polyDragEnd: [{\n            type: Output\n        }], polyDragStart: [{\n            type: Output\n        }], polyMouseDown: [{\n            type: Output\n        }], polyMouseMove: [{\n            type: Output\n        }], polyMouseOut: [{\n            type: Output\n        }], polyMouseOver: [{\n            type: Output\n        }], polyMouseUp: [{\n            type: Output\n        }], polyRightClick: [{\n            type: Output\n        }], polyPathsChange: [{\n            type: Output\n        }], fillColor: [{\n            type: Input\n        }], fillOpacity: [{\n            type: Input\n        }], strokeColor: [{\n            type: Input\n        }], strokeOpacity: [{\n            type: Input\n        }], strokeWeight: [{\n            type: Input\n        }], visible: [{\n            type: Input\n        }], zIndex: [{\n            type: Input\n        }] }); })();\n\n/**\n * AgmPolylineIcon enables to add polyline sequences to add arrows, circle,\n * or custom icons either along the entire line, or in a specific part of it.\n * See https://developers.google.com/maps/documentation/javascript/shapes#polyline_customize\n *\n * ### Example\n * ```html\n *    <agm-map [latitude]=\"lat\" [longitude]=\"lng\" [zoom]=\"zoom\">\n *      <agm-polyline>\n *          <agm-icon-sequence [fixedRotation]=\"true\" [path]=\"'FORWARD_OPEN_ARROW'\">\n *          </agm-icon-sequence>\n *      </agm-polyline>\n *    </agm-map>\n * ```\n */\nclass AgmPolylineIcon {\n    ngOnInit() {\n        if (this.path == null) {\n            throw new Error('Icon Sequence path is required');\n        }\n    }\n}\nAgmPolylineIcon.ɵfac = function AgmPolylineIcon_Factory(t) { return new (t || AgmPolylineIcon)(); };\nAgmPolylineIcon.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmPolylineIcon, selectors: [[\"agm-icon-sequence\"]], inputs: { fixedRotation: \"fixedRotation\", offset: \"offset\", repeat: \"repeat\", anchorX: \"anchorX\", anchorY: \"anchorY\", fillColor: \"fillColor\", fillOpacity: \"fillOpacity\", path: \"path\", rotation: \"rotation\", scale: \"scale\", strokeColor: \"strokeColor\", strokeOpacity: \"strokeOpacity\", strokeWeight: \"strokeWeight\" } });\nAgmPolylineIcon.propDecorators = {\n    fixedRotation: [{ type: Input }],\n    offset: [{ type: Input }],\n    repeat: [{ type: Input }],\n    anchorX: [{ type: Input }],\n    anchorY: [{ type: Input }],\n    fillColor: [{ type: Input }],\n    fillOpacity: [{ type: Input }],\n    path: [{ type: Input }],\n    rotation: [{ type: Input }],\n    scale: [{ type: Input }],\n    strokeColor: [{ type: Input }],\n    strokeOpacity: [{ type: Input }],\n    strokeWeight: [{ type: Input }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmPolylineIcon, [{\n        type: Directive,\n        args: [{ selector: 'agm-polyline agm-icon-sequence' }]\n    }], null, { fixedRotation: [{\n            type: Input\n        }], offset: [{\n            type: Input\n        }], repeat: [{\n            type: Input\n        }], anchorX: [{\n            type: Input\n        }], anchorY: [{\n            type: Input\n        }], fillColor: [{\n            type: Input\n        }], fillOpacity: [{\n            type: Input\n        }], path: [{\n            type: Input\n        }], rotation: [{\n            type: Input\n        }], scale: [{\n            type: Input\n        }], strokeColor: [{\n            type: Input\n        }], strokeOpacity: [{\n            type: Input\n        }], strokeWeight: [{\n            type: Input\n        }] }); })();\n\n/**\n * AgmPolylinePoint represents one element of a polyline within a  {@link\n * AgmPolyline}\n */\nclass AgmPolylinePoint {\n    constructor() {\n        /**\n         * This event emitter gets emitted when the position of the point changed.\n         */\n        this.positionChanged = new EventEmitter();\n    }\n    ngOnChanges(changes) {\n        // tslint:disable: no-string-literal\n        if (changes['latitude'] || changes['longitude']) {\n            this.positionChanged.emit({\n                lat: changes['latitude'] ? changes['latitude'].currentValue : this.latitude,\n                lng: changes['longitude'] ? changes['longitude'].currentValue : this.longitude,\n            });\n        }\n        // tslint:enable: no-string-literal\n    }\n    /** @internal */\n    getFitBoundsDetails$() {\n        return this.positionChanged.pipe(startWith({ lat: this.latitude, lng: this.longitude }), map(position => ({ latLng: position })));\n    }\n}\nAgmPolylinePoint.ɵfac = function AgmPolylinePoint_Factory(t) { return new (t || AgmPolylinePoint)(); };\nAgmPolylinePoint.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmPolylinePoint, selectors: [[\"agm-polyline-point\"]], inputs: { latitude: \"latitude\", longitude: \"longitude\" }, outputs: { positionChanged: \"positionChanged\" }, features: [ɵngcc0.ɵɵProvidersFeature([\n            { provide: FitBoundsAccessor, useExisting: forwardRef(() => AgmPolylinePoint) },\n        ]), ɵngcc0.ɵɵNgOnChangesFeature] });\nAgmPolylinePoint.ctorParameters = () => [];\nAgmPolylinePoint.propDecorators = {\n    latitude: [{ type: Input }],\n    longitude: [{ type: Input }],\n    positionChanged: [{ type: Output }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmPolylinePoint, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-polyline-point',\n                providers: [\n                    { provide: FitBoundsAccessor, useExisting: forwardRef(() => AgmPolylinePoint) },\n                ]\n            }]\n    }], function () { return []; }, { positionChanged: [{\n            type: Output\n        }], latitude: [{\n            type: Input\n        }], longitude: [{\n            type: Input\n        }] }); })();\n\nlet polylineId = 0;\n/**\n * AgmPolyline renders a polyline on a {@link AgmMap}\n *\n * ### Example\n * ```typescript\n * import { Component } from '@angular/core';\n *\n * @Component({\n *  selector: 'my-map-cmp',\n *  styles: [`\n *    .agm-map-container {\n *      height: 300px;\n *    }\n * `],\n *  template: `\n *    <agm-map [latitude]=\"lat\" [longitude]=\"lng\" [zoom]=\"zoom\">\n *      <agm-polyline>\n *          <agm-polyline-point [latitude]=\"latA\" [longitude]=\"lngA\">\n *          </agm-polyline-point>\n *          <agm-polyline-point [latitude]=\"latB\" [longitude]=\"lngB\">\n *          </agm-polyline-point>\n *      </agm-polyline>\n *    </agm-map>\n *  `\n * })\n * ```\n */\nclass AgmPolyline {\n    constructor(_polylineManager) {\n        this._polylineManager = _polylineManager;\n        /**\n         * Indicates whether this Polyline handles mouse events. Defaults to true.\n         */\n        this.clickable = true;\n        /**\n         * If set to true, the user can drag this shape over the map. The geodesic property defines the\n         * mode of dragging. Defaults to false.\n         */\n        // tslint:disable-next-line:no-input-rename\n        this.draggable = false;\n        /**\n         * If set to true, the user can edit this shape by dragging the control points shown at the\n         * vertices and on each segment. Defaults to false.\n         */\n        this.editable = false;\n        /**\n         * When true, edges of the polygon are interpreted as geodesic and will follow the curvature of\n         * the Earth. When false, edges of the polygon are rendered as straight lines in screen space.\n         * Note that the shape of a geodesic polygon may appear to change when dragged, as the dimensions\n         * are maintained relative to the surface of the earth. Defaults to false.\n         */\n        this.geodesic = false;\n        /**\n         * Whether this polyline is visible on the map. Defaults to true.\n         */\n        this.visible = true;\n        /**\n         * This event is fired when the DOM click event is fired on the Polyline.\n         */\n        this.lineClick = new EventEmitter();\n        /**\n         * This event is fired when the DOM dblclick event is fired on the Polyline.\n         */\n        this.lineDblClick = new EventEmitter();\n        /**\n         * This event is repeatedly fired while the user drags the polyline.\n         */\n        this.lineDrag = new EventEmitter();\n        /**\n         * This event is fired when the user stops dragging the polyline.\n         */\n        this.lineDragEnd = new EventEmitter();\n        /**\n         * This event is fired when the user starts dragging the polyline.\n         */\n        this.lineDragStart = new EventEmitter();\n        /**\n         * This event is fired when the DOM mousedown event is fired on the Polyline.\n         */\n        this.lineMouseDown = new EventEmitter();\n        /**\n         * This event is fired when the DOM mousemove event is fired on the Polyline.\n         */\n        this.lineMouseMove = new EventEmitter();\n        /**\n         * This event is fired on Polyline mouseout.\n         */\n        this.lineMouseOut = new EventEmitter();\n        /**\n         * This event is fired on Polyline mouseover.\n         */\n        this.lineMouseOver = new EventEmitter();\n        /**\n         * This event is fired whe the DOM mouseup event is fired on the Polyline\n         */\n        this.lineMouseUp = new EventEmitter();\n        /**\n         * This event is fired when the Polyline is right-clicked on.\n         */\n        this.lineRightClick = new EventEmitter();\n        /**\n         * This event is fired after Polyline's path changes.\n         */\n        this.polyPathChange = new EventEmitter();\n        this._polylineAddedToManager = false;\n        this._subscriptions = [];\n        this._id = (polylineId++).toString();\n    }\n    /** @internal */\n    ngAfterContentInit() {\n        if (this.points.length) {\n            this.points.forEach((point) => {\n                const s = point.positionChanged.subscribe(() => { this._polylineManager.updatePolylinePoints(this); });\n                this._subscriptions.push(s);\n            });\n        }\n        if (!this._polylineAddedToManager) {\n            this._init();\n        }\n        const pointSub = this.points.changes.subscribe(() => this._polylineManager.updatePolylinePoints(this));\n        this._subscriptions.push(pointSub);\n        this._polylineManager.updatePolylinePoints(this);\n        const iconSub = this.iconSequences.changes.subscribe(() => this._polylineManager.updateIconSequences(this));\n        this._subscriptions.push(iconSub);\n    }\n    ngOnChanges(changes) {\n        if (!this._polylineAddedToManager) {\n            this._init();\n            return;\n        }\n        const options = {};\n        const optionKeys = Object.keys(changes).filter(k => AgmPolyline._polylineOptionsAttributes.indexOf(k) !== -1);\n        optionKeys.forEach(k => options[k] = changes[k].currentValue);\n        this._polylineManager.setPolylineOptions(this, options);\n    }\n    getPath() {\n        return this._polylineManager.getPath(this);\n    }\n    _init() {\n        this._polylineManager.addPolyline(this);\n        this._polylineAddedToManager = true;\n        this._addEventListeners();\n    }\n    _addEventListeners() {\n        const handlers = [\n            { name: 'click', handler: (ev) => this.lineClick.emit(ev) },\n            { name: 'dblclick', handler: (ev) => this.lineDblClick.emit(ev) },\n            { name: 'drag', handler: (ev) => this.lineDrag.emit(ev) },\n            { name: 'dragend', handler: (ev) => this.lineDragEnd.emit(ev) },\n            { name: 'dragstart', handler: (ev) => this.lineDragStart.emit(ev) },\n            { name: 'mousedown', handler: (ev) => this.lineMouseDown.emit(ev) },\n            { name: 'mousemove', handler: (ev) => this.lineMouseMove.emit(ev) },\n            { name: 'mouseout', handler: (ev) => this.lineMouseOut.emit(ev) },\n            { name: 'mouseover', handler: (ev) => this.lineMouseOver.emit(ev) },\n            { name: 'mouseup', handler: (ev) => this.lineMouseUp.emit(ev) },\n            { name: 'rightclick', handler: (ev) => this.lineRightClick.emit(ev) },\n        ];\n        handlers.forEach((obj) => {\n            const os = this._polylineManager.createEventObservable(obj.name, this).subscribe(obj.handler);\n            this._subscriptions.push(os);\n        });\n        this._polylineManager.createPathEventObservable(this).then((ob$) => {\n            const os = ob$.subscribe(pathEvent => this.polyPathChange.emit(pathEvent));\n            this._subscriptions.push(os);\n        });\n    }\n    /** @internal */\n    _getPoints() {\n        if (this.points) {\n            return this.points.toArray();\n        }\n        return [];\n    }\n    _getIcons() {\n        if (this.iconSequences) {\n            return this.iconSequences.toArray();\n        }\n        return [];\n    }\n    /** @internal */\n    id() { return this._id; }\n    /** @internal */\n    ngOnDestroy() {\n        this._polylineManager.deletePolyline(this);\n        // unsubscribe all registered observable subscriptions\n        this._subscriptions.forEach((s) => s.unsubscribe());\n    }\n}\nAgmPolyline.ɵfac = function AgmPolyline_Factory(t) { return new (t || AgmPolyline)(ɵngcc0.ɵɵdirectiveInject(PolylineManager)); };\nAgmPolyline.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmPolyline, selectors: [[\"agm-polyline\"]], contentQueries: function AgmPolyline_ContentQueries(rf, ctx, dirIndex) { if (rf & 1) {\n        ɵngcc0.ɵɵcontentQuery(dirIndex, AgmPolylinePoint, 4);\n        ɵngcc0.ɵɵcontentQuery(dirIndex, AgmPolylineIcon, 4);\n    } if (rf & 2) {\n        let _t;\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.points = _t);\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.iconSequences = _t);\n    } }, inputs: { clickable: \"clickable\", draggable: [\"polylineDraggable\", \"draggable\"], editable: \"editable\", geodesic: \"geodesic\", visible: \"visible\", strokeColor: \"strokeColor\", strokeOpacity: \"strokeOpacity\", strokeWeight: \"strokeWeight\", zIndex: \"zIndex\" }, outputs: { lineClick: \"lineClick\", lineDblClick: \"lineDblClick\", lineDrag: \"lineDrag\", lineDragEnd: \"lineDragEnd\", lineDragStart: \"lineDragStart\", lineMouseDown: \"lineMouseDown\", lineMouseMove: \"lineMouseMove\", lineMouseOut: \"lineMouseOut\", lineMouseOver: \"lineMouseOver\", lineMouseUp: \"lineMouseUp\", lineRightClick: \"lineRightClick\", polyPathChange: \"polyPathChange\" }, features: [ɵngcc0.ɵɵNgOnChangesFeature] });\nAgmPolyline._polylineOptionsAttributes = [\n    'draggable', 'editable', 'visible', 'geodesic', 'strokeColor', 'strokeOpacity', 'strokeWeight',\n    'zIndex',\n];\nAgmPolyline.ctorParameters = () => [\n    { type: PolylineManager }\n];\nAgmPolyline.propDecorators = {\n    clickable: [{ type: Input }],\n    draggable: [{ type: Input, args: ['polylineDraggable',] }],\n    editable: [{ type: Input }],\n    geodesic: [{ type: Input }],\n    strokeColor: [{ type: Input }],\n    strokeOpacity: [{ type: Input }],\n    strokeWeight: [{ type: Input }],\n    visible: [{ type: Input }],\n    zIndex: [{ type: Input }],\n    lineClick: [{ type: Output }],\n    lineDblClick: [{ type: Output }],\n    lineDrag: [{ type: Output }],\n    lineDragEnd: [{ type: Output }],\n    lineDragStart: [{ type: Output }],\n    lineMouseDown: [{ type: Output }],\n    lineMouseMove: [{ type: Output }],\n    lineMouseOut: [{ type: Output }],\n    lineMouseOver: [{ type: Output }],\n    lineMouseUp: [{ type: Output }],\n    lineRightClick: [{ type: Output }],\n    polyPathChange: [{ type: Output }],\n    points: [{ type: ContentChildren, args: [AgmPolylinePoint,] }],\n    iconSequences: [{ type: ContentChildren, args: [AgmPolylineIcon,] }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmPolyline, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-polyline'\n            }]\n    }], function () { return [{ type: PolylineManager }]; }, { clickable: [{\n            type: Input\n        }], draggable: [{\n            type: Input,\n            args: ['polylineDraggable']\n        }], editable: [{\n            type: Input\n        }], geodesic: [{\n            type: Input\n        }], visible: [{\n            type: Input\n        }], lineClick: [{\n            type: Output\n        }], lineDblClick: [{\n            type: Output\n        }], lineDrag: [{\n            type: Output\n        }], lineDragEnd: [{\n            type: Output\n        }], lineDragStart: [{\n            type: Output\n        }], lineMouseDown: [{\n            type: Output\n        }], lineMouseMove: [{\n            type: Output\n        }], lineMouseOut: [{\n            type: Output\n        }], lineMouseOver: [{\n            type: Output\n        }], lineMouseUp: [{\n            type: Output\n        }], lineRightClick: [{\n            type: Output\n        }], polyPathChange: [{\n            type: Output\n        }], strokeColor: [{\n            type: Input\n        }], strokeOpacity: [{\n            type: Input\n        }], strokeWeight: [{\n            type: Input\n        }], zIndex: [{\n            type: Input\n        }], points: [{\n            type: ContentChildren,\n            args: [AgmPolylinePoint]\n        }], iconSequences: [{\n            type: ContentChildren,\n            args: [AgmPolylineIcon]\n        }] }); })();\n\nclass AgmRectangle {\n    constructor(_manager) {\n        this._manager = _manager;\n        /**\n         * Indicates whether this Rectangle handles mouse events. Defaults to true.\n         */\n        this.clickable = true;\n        /**\n         * If set to true, the user can drag this rectangle over the map. Defaults to false.\n         */\n        // tslint:disable-next-line:no-input-rename\n        this.draggable = false;\n        /**\n         * If set to true, the user can edit this rectangle by dragging the control points shown at\n         * the center and around the circumference of the rectangle. Defaults to false.\n         */\n        this.editable = false;\n        /**\n         * The stroke position. Defaults to CENTER.\n         * This property is not supported on Internet Explorer 8 and earlier.\n         */\n        this.strokePosition = 'CENTER';\n        /**\n         * The stroke width in pixels.\n         */\n        this.strokeWeight = 0;\n        /**\n         * Whether this rectangle is visible on the map. Defaults to true.\n         */\n        this.visible = true;\n        /**\n         * This event is fired when the rectangle's is changed.\n         */\n        this.boundsChange = new EventEmitter();\n        /**\n         * This event emitter gets emitted when the user clicks on the rectangle.\n         */\n        this.rectangleClick = new EventEmitter();\n        /**\n         * This event emitter gets emitted when the user clicks on the rectangle.\n         */\n        this.rectangleDblClick = new EventEmitter();\n        /**\n         * This event is repeatedly fired while the user drags the rectangle.\n         */\n        // tslint:disable-next-line: no-output-native\n        this.drag = new EventEmitter();\n        /**\n         * This event is fired when the user stops dragging the rectangle.\n         */\n        this.dragEnd = new EventEmitter();\n        /**\n         * This event is fired when the user starts dragging the rectangle.\n         */\n        this.dragStart = new EventEmitter();\n        /**\n         * This event is fired when the DOM mousedown event is fired on the rectangle.\n         */\n        this.mouseDown = new EventEmitter();\n        /**\n         * This event is fired when the DOM mousemove event is fired on the rectangle.\n         */\n        this.mouseMove = new EventEmitter();\n        /**\n         * This event is fired on rectangle mouseout.\n         */\n        this.mouseOut = new EventEmitter();\n        /**\n         * This event is fired on rectangle mouseover.\n         */\n        this.mouseOver = new EventEmitter();\n        /**\n         * This event is fired when the DOM mouseup event is fired on the rectangle.\n         */\n        this.mouseUp = new EventEmitter();\n        /**\n         * This event is fired when the rectangle is right-clicked on.\n         */\n        this.rightClick = new EventEmitter();\n        this._rectangleAddedToManager = false;\n        this._eventSubscriptions = [];\n    }\n    /** @internal */\n    ngOnInit() {\n        this._manager.addRectangle(this);\n        this._rectangleAddedToManager = true;\n        this._registerEventListeners();\n    }\n    /** @internal */\n    ngOnChanges(changes) {\n        if (!this._rectangleAddedToManager) {\n            return;\n        }\n        // tslint:disable: no-string-literal\n        if (changes['north'] ||\n            changes['east'] ||\n            changes['south'] ||\n            changes['west']) {\n            this._manager.setBounds(this);\n        }\n        if (changes['editable']) {\n            this._manager.setEditable(this);\n        }\n        if (changes['draggable']) {\n            this._manager.setDraggable(this);\n        }\n        if (changes['visible']) {\n            this._manager.setVisible(this);\n        }\n        // tslint:enable: no-string-literal\n        this._updateRectangleOptionsChanges(changes);\n    }\n    _updateRectangleOptionsChanges(changes) {\n        const options = {};\n        const optionKeys = Object.keys(changes).filter(k => AgmRectangle._mapOptions.indexOf(k) !== -1);\n        optionKeys.forEach(k => {\n            options[k] = changes[k].currentValue;\n        });\n        if (optionKeys.length > 0) {\n            this._manager.setOptions(this, options);\n        }\n    }\n    _registerEventListeners() {\n        const events = new Map();\n        events.set('bounds_changed', this.boundsChange);\n        events.set('click', this.rectangleClick);\n        events.set('dblclick', this.rectangleDblClick);\n        events.set('drag', this.drag);\n        events.set('dragend', this.dragEnd);\n        events.set('dragStart', this.dragStart);\n        events.set('mousedown', this.mouseDown);\n        events.set('mousemove', this.mouseMove);\n        events.set('mouseout', this.mouseOut);\n        events.set('mouseover', this.mouseOver);\n        events.set('mouseup', this.mouseUp);\n        events.set('rightclick', this.rightClick);\n        events.forEach((eventEmitter, eventName) => {\n            this._eventSubscriptions.push(this._manager\n                .createEventObservable(eventName, this)\n                .subscribe(value => {\n                switch (eventName) {\n                    case 'bounds_changed':\n                        this._manager.getBounds(this).then(bounds => eventEmitter.emit({\n                            north: bounds.getNorthEast().lat(),\n                            east: bounds.getNorthEast().lng(),\n                            south: bounds.getSouthWest().lat(),\n                            west: bounds.getSouthWest().lng(),\n                        }));\n                        break;\n                    default:\n                        eventEmitter.emit(value);\n                }\n            }));\n        });\n    }\n    /** @internal */\n    ngOnDestroy() {\n        this._eventSubscriptions.forEach(s => s.unsubscribe());\n        this._eventSubscriptions = null;\n        this._manager.removeRectangle(this);\n    }\n    /**\n     * Gets the LatLngBounds of this Rectangle.\n     */\n    getBounds() {\n        return this._manager.getBounds(this);\n    }\n}\nAgmRectangle.ɵfac = function AgmRectangle_Factory(t) { return new (t || AgmRectangle)(ɵngcc0.ɵɵdirectiveInject(RectangleManager)); };\nAgmRectangle.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmRectangle, selectors: [[\"agm-rectangle\"]], inputs: { clickable: \"clickable\", draggable: [\"rectangleDraggable\", \"draggable\"], editable: \"editable\", strokePosition: \"strokePosition\", strokeWeight: \"strokeWeight\", visible: \"visible\", north: \"north\", east: \"east\", south: \"south\", west: \"west\", fillColor: \"fillColor\", fillOpacity: \"fillOpacity\", strokeColor: \"strokeColor\", strokeOpacity: \"strokeOpacity\", zIndex: \"zIndex\" }, outputs: { boundsChange: \"boundsChange\", rectangleClick: \"rectangleClick\", rectangleDblClick: \"rectangleDblClick\", drag: \"drag\", dragEnd: \"dragEnd\", dragStart: \"dragStart\", mouseDown: \"mouseDown\", mouseMove: \"mouseMove\", mouseOut: \"mouseOut\", mouseOver: \"mouseOver\", mouseUp: \"mouseUp\", rightClick: \"rightClick\" }, features: [ɵngcc0.ɵɵNgOnChangesFeature] });\nAgmRectangle._mapOptions = [\n    'fillColor',\n    'fillOpacity',\n    'strokeColor',\n    'strokeOpacity',\n    'strokePosition',\n    'strokeWeight',\n    'visible',\n    'zIndex',\n    'clickable',\n];\nAgmRectangle.ctorParameters = () => [\n    { type: RectangleManager }\n];\nAgmRectangle.propDecorators = {\n    north: [{ type: Input }],\n    east: [{ type: Input }],\n    south: [{ type: Input }],\n    west: [{ type: Input }],\n    clickable: [{ type: Input }],\n    draggable: [{ type: Input, args: ['rectangleDraggable',] }],\n    editable: [{ type: Input }],\n    fillColor: [{ type: Input }],\n    fillOpacity: [{ type: Input }],\n    strokeColor: [{ type: Input }],\n    strokeOpacity: [{ type: Input }],\n    strokePosition: [{ type: Input }],\n    strokeWeight: [{ type: Input }],\n    visible: [{ type: Input }],\n    zIndex: [{ type: Input }],\n    boundsChange: [{ type: Output }],\n    rectangleClick: [{ type: Output }],\n    rectangleDblClick: [{ type: Output }],\n    drag: [{ type: Output }],\n    dragEnd: [{ type: Output }],\n    dragStart: [{ type: Output }],\n    mouseDown: [{ type: Output }],\n    mouseMove: [{ type: Output }],\n    mouseOut: [{ type: Output }],\n    mouseOver: [{ type: Output }],\n    mouseUp: [{ type: Output }],\n    rightClick: [{ type: Output }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmRectangle, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-rectangle'\n            }]\n    }], function () { return [{ type: RectangleManager }]; }, { clickable: [{\n            type: Input\n        }], draggable: [{\n            type: Input,\n            args: ['rectangleDraggable']\n        }], editable: [{\n            type: Input\n        }], strokePosition: [{\n            type: Input\n        }], strokeWeight: [{\n            type: Input\n        }], visible: [{\n            type: Input\n        }], boundsChange: [{\n            type: Output\n        }], rectangleClick: [{\n            type: Output\n        }], rectangleDblClick: [{\n            type: Output\n        }], drag: [{\n            type: Output\n        }], dragEnd: [{\n            type: Output\n        }], dragStart: [{\n            type: Output\n        }], mouseDown: [{\n            type: Output\n        }], mouseMove: [{\n            type: Output\n        }], mouseOut: [{\n            type: Output\n        }], mouseOver: [{\n            type: Output\n        }], mouseUp: [{\n            type: Output\n        }], rightClick: [{\n            type: Output\n        }], north: [{\n            type: Input\n        }], east: [{\n            type: Input\n        }], south: [{\n            type: Input\n        }], west: [{\n            type: Input\n        }], fillColor: [{\n            type: Input\n        }], fillOpacity: [{\n            type: Input\n        }], strokeColor: [{\n            type: Input\n        }], strokeOpacity: [{\n            type: Input\n        }], zIndex: [{\n            type: Input\n        }] }); })();\n\nlet layerId$3 = 0;\n/*\n * This directive adds a transit layer to a google map instance\n * <agm-transit-layer [visible]=\"true|false\"> <agm-transit-layer>\n * */\nclass AgmTransitLayer {\n    constructor(_manager) {\n        this._manager = _manager;\n        this._addedToManager = false;\n        this._id = (layerId$3++).toString();\n        /**\n         * Hide/show transit layer\n         */\n        this.visible = true;\n    }\n    ngOnInit() {\n        if (this._addedToManager) {\n            return;\n        }\n        this._manager.addTransitLayer(this);\n        this._addedToManager = true;\n    }\n    /** @internal */\n    id() { return this._id; }\n    /** @internal */\n    toString() { return `AgmTransitLayer-${this._id.toString()}`; }\n    /** @internal */\n    ngOnDestroy() {\n        this._manager.deleteLayer(this);\n    }\n}\nAgmTransitLayer.ɵfac = function AgmTransitLayer_Factory(t) { return new (t || AgmTransitLayer)(ɵngcc0.ɵɵdirectiveInject(LayerManager)); };\nAgmTransitLayer.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: AgmTransitLayer, selectors: [[\"agm-transit-layer\"]], inputs: { visible: \"visible\" } });\nAgmTransitLayer.ctorParameters = () => [\n    { type: LayerManager }\n];\nAgmTransitLayer.propDecorators = {\n    visible: [{ type: Input }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmTransitLayer, [{\n        type: Directive,\n        args: [{\n                selector: 'agm-transit-layer'\n            }]\n    }], function () { return [{ type: LayerManager }]; }, { visible: [{\n            type: Input\n        }] }); })();\n\n/**\n * @internal\n */\nfunction coreDirectives() {\n    return [\n        AgmBicyclingLayer,\n        AgmCircle,\n        AgmDataLayer,\n        AgmFitBounds,\n        AgmFullscreenControl,\n        AgmInfoWindow,\n        AgmKmlLayer,\n        AgmMap,\n        AgmMapTypeControl,\n        AgmMarker,\n        AgmPanControl,\n        AgmPolygon,\n        AgmPolyline,\n        AgmPolylineIcon,\n        AgmPolylinePoint,\n        AgmRectangle,\n        AgmRotateControl,\n        AgmScaleControl,\n        AgmStreetViewControl,\n        AgmTransitLayer,\n        AgmZoomControl,\n    ];\n}\n/**\n * The angular-google-maps core module. Contains all Directives/Services/Pipes\n * of the core module. Please use `AgmCoreModule.forRoot()` in your app module.\n */\nclass AgmCoreModule {\n    /**\n     * Please use this method when you register the module at the root level.\n     */\n    static forRoot(lazyMapsAPILoaderConfig) {\n        return {\n            ngModule: AgmCoreModule,\n            providers: [\n                ...BROWSER_GLOBALS_PROVIDERS, { provide: MapsAPILoader, useClass: LazyMapsAPILoader },\n                { provide: LAZY_MAPS_API_CONFIG, useValue: lazyMapsAPILoaderConfig },\n            ],\n        };\n    }\n}\nAgmCoreModule.ɵfac = function AgmCoreModule_Factory(t) { return new (t || AgmCoreModule)(); };\nAgmCoreModule.ɵmod = /*@__PURE__*/ ɵngcc0.ɵɵdefineNgModule({ type: AgmCoreModule });\nAgmCoreModule.ɵinj = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjector({});\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(AgmCoreModule, [{\n        type: NgModule,\n        args: [{ declarations: coreDirectives(), exports: coreDirectives() }]\n    }], null, null); })();\n(function () { (typeof ngJitMode === \"undefined\" || ngJitMode) && ɵngcc0.ɵɵsetNgModuleScope(AgmCoreModule, { declarations: [AgmBicyclingLayer, AgmCircle, AgmDataLayer, AgmFitBounds, AgmFullscreenControl, AgmInfoWindow, AgmKmlLayer, AgmMap, AgmMapTypeControl, AgmMarker, AgmPanControl, AgmPolygon, AgmPolyline, AgmPolylineIcon, AgmPolylinePoint, AgmRectangle, AgmRotateControl, AgmScaleControl, AgmStreetViewControl, AgmTransitLayer, AgmZoomControl], exports: [AgmBicyclingLayer, AgmCircle, AgmDataLayer, AgmFitBounds, AgmFullscreenControl, AgmInfoWindow, AgmKmlLayer, AgmMap, AgmMapTypeControl, AgmMarker, AgmPanControl, AgmPolygon, AgmPolyline, AgmPolylineIcon, AgmPolylinePoint, AgmRectangle, AgmRotateControl, AgmScaleControl, AgmStreetViewControl, AgmTransitLayer, AgmZoomControl] }); })();\n\n/*\n * Public API Surface of core\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { AgmBicyclingLayer, AgmCircle, AgmCoreModule, AgmDataLayer, AgmFitBounds, AgmFullscreenControl, AgmGeocoder, AgmInfoWindow, AgmKmlLayer, AgmMap, AgmMapTypeControl, AgmMarker, AgmPanControl, AgmPolygon, AgmPolyline, AgmPolylineIcon, AgmPolylinePoint, AgmRectangle, AgmRotateControl, AgmScaleControl, AgmStreetViewControl, AgmTransitLayer, AgmZoomControl, CircleManager, DataLayerManager, FitBoundsAccessor, GoogleMapsAPIWrapper, GoogleMapsScriptProtocol, InfoWindowManager, KmlLayerManager, LAZY_MAPS_API_CONFIG, LayerManager, LazyMapsAPILoader, MapsAPILoader, MarkerManager, NoOpMapsAPILoader, PolygonManager, PolylineManager, RectangleManager, coreDirectives, FitBoundsService as ɵa, AgmMapControl as ɵb, WindowRef as ɵc, DocumentRef as ɵd, BROWSER_GLOBALS_PROVIDERS as ɵe };\n\n","import { ReplaySubject } from '../ReplaySubject';\nexport function shareReplay(configOrBufferSize, windowTime, scheduler) {\n    let config;\n    if (configOrBufferSize && typeof configOrBufferSize === 'object') {\n        config = configOrBufferSize;\n    }\n    else {\n        config = {\n            bufferSize: configOrBufferSize,\n            windowTime,\n            refCount: false,\n            scheduler,\n        };\n    }\n    return (source) => source.lift(shareReplayOperator(config));\n}\nfunction shareReplayOperator({ bufferSize = Number.POSITIVE_INFINITY, windowTime = Number.POSITIVE_INFINITY, refCount: useRefCount, scheduler, }) {\n    let subject;\n    let refCount = 0;\n    let subscription;\n    let hasError = false;\n    let isComplete = false;\n    return function shareReplayOperation(source) {\n        refCount++;\n        let innerSub;\n        if (!subject || hasError) {\n            hasError = false;\n            subject = new ReplaySubject(bufferSize, windowTime, scheduler);\n            innerSub = subject.subscribe(this);\n            subscription = source.subscribe({\n                next(value) {\n                    subject.next(value);\n                },\n                error(err) {\n                    hasError = true;\n                    subject.error(err);\n                },\n                complete() {\n                    isComplete = true;\n                    subscription = undefined;\n                    subject.complete();\n                },\n            });\n            if (isComplete) {\n                subscription = undefined;\n            }\n        }\n        else {\n            innerSub = subject.subscribe(this);\n        }\n        this.add(() => {\n            refCount--;\n            innerSub.unsubscribe();\n            innerSub = undefined;\n            if (subscription && !isComplete && useRefCount && refCount === 0) {\n                subscription.unsubscribe();\n                subscription = undefined;\n                subject = undefined;\n            }\n        });\n    };\n}\n","import { SimpleOuterSubscriber, innerSubscribe, SimpleInnerSubscriber } from '../innerSubscribe';\nexport function audit(durationSelector) {\n    return function auditOperatorFunction(source) {\n        return source.lift(new AuditOperator(durationSelector));\n    };\n}\nclass AuditOperator {\n    constructor(durationSelector) {\n        this.durationSelector = durationSelector;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new AuditSubscriber(subscriber, this.durationSelector));\n    }\n}\nclass AuditSubscriber extends SimpleOuterSubscriber {\n    constructor(destination, durationSelector) {\n        super(destination);\n        this.durationSelector = durationSelector;\n        this.hasValue = false;\n    }\n    _next(value) {\n        this.value = value;\n        this.hasValue = true;\n        if (!this.throttled) {\n            let duration;\n            try {\n                const { durationSelector } = this;\n                duration = durationSelector(value);\n            }\n            catch (err) {\n                return this.destination.error(err);\n            }\n            const innerSubscription = innerSubscribe(duration, new SimpleInnerSubscriber(this));\n            if (!innerSubscription || innerSubscription.closed) {\n                this.clearThrottle();\n            }\n            else {\n                this.add(this.throttled = innerSubscription);\n            }\n        }\n    }\n    clearThrottle() {\n        const { value, hasValue, throttled } = this;\n        if (throttled) {\n            this.remove(throttled);\n            this.throttled = undefined;\n            throttled.unsubscribe();\n        }\n        if (hasValue) {\n            this.value = undefined;\n            this.hasValue = false;\n            this.destination.next(value);\n        }\n    }\n    notifyNext() {\n        this.clearThrottle();\n    }\n    notifyComplete() {\n        this.clearThrottle();\n    }\n}\n","import { AnimationFrameAction } from './AnimationFrameAction';\nimport { AnimationFrameScheduler } from './AnimationFrameScheduler';\nexport const animationFrameScheduler = new AnimationFrameScheduler(AnimationFrameAction);\nexport const animationFrame = animationFrameScheduler;\n","import { AsyncScheduler } from './AsyncScheduler';\nexport class AnimationFrameScheduler extends AsyncScheduler {\n    flush(action) {\n        this.active = true;\n        this.scheduled = undefined;\n        const { actions } = this;\n        let error;\n        let index = -1;\n        let count = actions.length;\n        action = action || actions.shift();\n        do {\n            if (error = action.execute(action.state, action.delay)) {\n                break;\n            }\n        } while (++index < count && (action = actions.shift()));\n        this.active = false;\n        if (error) {\n            while (++index < count && (action = actions.shift())) {\n                action.unsubscribe();\n            }\n            throw error;\n        }\n    }\n}\n","import { AsyncAction } from './AsyncAction';\nexport class AnimationFrameAction extends AsyncAction {\n    constructor(scheduler, work) {\n        super(scheduler, work);\n        this.scheduler = scheduler;\n        this.work = work;\n    }\n    requestAsyncId(scheduler, id, delay = 0) {\n        if (delay !== null && delay > 0) {\n            return super.requestAsyncId(scheduler, id, delay);\n        }\n        scheduler.actions.push(this);\n        return scheduler.scheduled || (scheduler.scheduled = requestAnimationFrame(() => scheduler.flush(null)));\n    }\n    recycleAsyncId(scheduler, id, delay = 0) {\n        if ((delay !== null && delay > 0) || (delay === null && this.delay > 0)) {\n            return super.recycleAsyncId(scheduler, id, delay);\n        }\n        if (scheduler.actions.length === 0) {\n            cancelAnimationFrame(id);\n            scheduler.scheduled = undefined;\n        }\n        return undefined;\n    }\n}\n","let nextHandle = 1;\nconst RESOLVED = (() => Promise.resolve())();\nconst activeHandles = {};\nfunction findAndClearHandle(handle) {\n    if (handle in activeHandles) {\n        delete activeHandles[handle];\n        return true;\n    }\n    return false;\n}\nexport const Immediate = {\n    setImmediate(cb) {\n        const handle = nextHandle++;\n        activeHandles[handle] = true;\n        RESOLVED.then(() => findAndClearHandle(handle) && cb());\n        return handle;\n    },\n    clearImmediate(handle) {\n        findAndClearHandle(handle);\n    },\n};\nexport const TestTools = {\n    pending() {\n        return Object.keys(activeHandles).length;\n    }\n};\n","import { AsapAction } from './AsapAction';\nimport { AsapScheduler } from './AsapScheduler';\nexport const asapScheduler = new AsapScheduler(AsapAction);\nexport const asap = asapScheduler;\n","import { AsyncScheduler } from './AsyncScheduler';\nexport class AsapScheduler extends AsyncScheduler {\n    flush(action) {\n        this.active = true;\n        this.scheduled = undefined;\n        const { actions } = this;\n        let error;\n        let index = -1;\n        let count = actions.length;\n        action = action || actions.shift();\n        do {\n            if (error = action.execute(action.state, action.delay)) {\n                break;\n            }\n        } while (++index < count && (action = actions.shift()));\n        this.active = false;\n        if (error) {\n            while (++index < count && (action = actions.shift())) {\n                action.unsubscribe();\n            }\n            throw error;\n        }\n    }\n}\n","import { Immediate } from '../util/Immediate';\nimport { AsyncAction } from './AsyncAction';\nexport class AsapAction extends AsyncAction {\n    constructor(scheduler, work) {\n        super(scheduler, work);\n        this.scheduler = scheduler;\n        this.work = work;\n    }\n    requestAsyncId(scheduler, id, delay = 0) {\n        if (delay !== null && delay > 0) {\n            return super.requestAsyncId(scheduler, id, delay);\n        }\n        scheduler.actions.push(this);\n        return scheduler.scheduled || (scheduler.scheduled = Immediate.setImmediate(scheduler.flush.bind(scheduler, null)));\n    }\n    recycleAsyncId(scheduler, id, delay = 0) {\n        if ((delay !== null && delay > 0) || (delay === null && this.delay > 0)) {\n            return super.recycleAsyncId(scheduler, id, delay);\n        }\n        if (scheduler.actions.length === 0) {\n            Immediate.clearImmediate(id);\n            scheduler.scheduled = undefined;\n        }\n        return undefined;\n    }\n}\n","import * as i0 from '@angular/core';\nimport { Directive, ElementRef, Input, TemplateRef, Injectable, EventEmitter, Component, ChangeDetectionStrategy, ViewEncapsulation, Renderer2, NgZone, Optional, Inject, Output, ViewChild, InjectionToken, forwardRef, Attribute, ChangeDetectorRef, HostBinding, ContentChild, ContentChildren, HostListener, NgModule } from '@angular/core';\nimport { NG_VALUE_ACCESSOR } from '@angular/forms';\nimport { takeUntil, auditTime, startWith, tap, debounceTime, filter, map } from 'rxjs/operators';\nimport { animationFrameScheduler, asapScheduler, Subject, fromEvent, merge } from 'rxjs';\nimport { DOCUMENT, CommonModule } from '@angular/common';\n\nimport * as ɵngcc0 from '@angular/core';\nimport * as ɵngcc1 from '@angular/common';\n\nconst _c0 = [\"content\"];\nconst _c1 = [\"scroll\"];\nconst _c2 = [\"padding\"];\nconst _c3 = function (a0) { return { searchTerm: a0 }; };\nfunction NgDropdownPanelComponent_div_0_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵelementStart(0, \"div\", 6);\n    ɵngcc0.ɵɵelementContainer(1, 7);\n    ɵngcc0.ɵɵelementEnd();\n} if (rf & 2) {\n    const ctx_r0 = ɵngcc0.ɵɵnextContext();\n    ɵngcc0.ɵɵadvance(1);\n    ɵngcc0.ɵɵproperty(\"ngTemplateOutlet\", ctx_r0.headerTemplate)(\"ngTemplateOutletContext\", ɵngcc0.ɵɵpureFunction1(2, _c3, ctx_r0.filterValue));\n} }\nfunction NgDropdownPanelComponent_div_8_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵelementStart(0, \"div\", 8);\n    ɵngcc0.ɵɵelementContainer(1, 7);\n    ɵngcc0.ɵɵelementEnd();\n} if (rf & 2) {\n    const ctx_r4 = ɵngcc0.ɵɵnextContext();\n    ɵngcc0.ɵɵadvance(1);\n    ɵngcc0.ɵɵproperty(\"ngTemplateOutlet\", ctx_r4.footerTemplate)(\"ngTemplateOutletContext\", ɵngcc0.ɵɵpureFunction1(2, _c3, ctx_r4.filterValue));\n} }\nconst _c4 = [\"*\"];\nconst _c5 = [\"searchInput\"];\nfunction NgSelectComponent_ng_container_4_div_1_ng_template_1_Template(rf, ctx) { if (rf & 1) {\n    const _r13 = ɵngcc0.ɵɵgetCurrentView();\n    ɵngcc0.ɵɵelementStart(0, \"span\", 15);\n    ɵngcc0.ɵɵlistener(\"click\", function NgSelectComponent_ng_container_4_div_1_ng_template_1_Template_span_click_0_listener() { ɵngcc0.ɵɵrestoreView(_r13); const item_r7 = ɵngcc0.ɵɵnextContext().$implicit; const ctx_r11 = ɵngcc0.ɵɵnextContext(2); return ɵngcc0.ɵɵresetView(ctx_r11.unselect(item_r7)); });\n    ɵngcc0.ɵɵtext(1, \"\\u00D7\");\n    ɵngcc0.ɵɵelementEnd();\n    ɵngcc0.ɵɵelement(2, \"span\", 16);\n} if (rf & 2) {\n    const item_r7 = ɵngcc0.ɵɵnextContext().$implicit;\n    const ctx_r9 = ɵngcc0.ɵɵnextContext(2);\n    ɵngcc0.ɵɵadvance(2);\n    ɵngcc0.ɵɵproperty(\"ngItemLabel\", item_r7.label)(\"escape\", ctx_r9.escapeHTML);\n} }\nfunction NgSelectComponent_ng_container_4_div_1_ng_template_3_Template(rf, ctx) { }\nconst _c6 = function (a0, a1, a2) { return { item: a0, clear: a1, label: a2 }; };\nfunction NgSelectComponent_ng_container_4_div_1_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵelementStart(0, \"div\", 12);\n    ɵngcc0.ɵɵtemplate(1, NgSelectComponent_ng_container_4_div_1_ng_template_1_Template, 3, 2, \"ng-template\", null, 13, ɵngcc0.ɵɵtemplateRefExtractor);\n    ɵngcc0.ɵɵtemplate(3, NgSelectComponent_ng_container_4_div_1_ng_template_3_Template, 0, 0, \"ng-template\", 14);\n    ɵngcc0.ɵɵelementEnd();\n} if (rf & 2) {\n    const item_r7 = ctx.$implicit;\n    const _r8 = ɵngcc0.ɵɵreference(2);\n    const ctx_r6 = ɵngcc0.ɵɵnextContext(2);\n    ɵngcc0.ɵɵclassProp(\"ng-value-disabled\", item_r7.disabled);\n    ɵngcc0.ɵɵadvance(3);\n    ɵngcc0.ɵɵproperty(\"ngTemplateOutlet\", ctx_r6.labelTemplate || _r8)(\"ngTemplateOutletContext\", ɵngcc0.ɵɵpureFunction3(4, _c6, item_r7.value, ctx_r6.clearItem, item_r7.label));\n} }\nfunction NgSelectComponent_ng_container_4_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵelementContainerStart(0);\n    ɵngcc0.ɵɵtemplate(1, NgSelectComponent_ng_container_4_div_1_Template, 4, 8, \"div\", 11);\n    ɵngcc0.ɵɵelementContainerEnd();\n} if (rf & 2) {\n    const ctx_r0 = ɵngcc0.ɵɵnextContext();\n    ɵngcc0.ɵɵadvance(1);\n    ɵngcc0.ɵɵproperty(\"ngForOf\", ctx_r0.selectedItems)(\"ngForTrackBy\", ctx_r0.trackByOption);\n} }\nfunction NgSelectComponent_5_ng_template_0_Template(rf, ctx) { }\nconst _c7 = function (a0, a1) { return { items: a0, clear: a1 }; };\nfunction NgSelectComponent_5_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵtemplate(0, NgSelectComponent_5_ng_template_0_Template, 0, 0, \"ng-template\", 14);\n} if (rf & 2) {\n    const ctx_r1 = ɵngcc0.ɵɵnextContext();\n    ɵngcc0.ɵɵproperty(\"ngTemplateOutlet\", ctx_r1.multiLabelTemplate)(\"ngTemplateOutletContext\", ɵngcc0.ɵɵpureFunction2(2, _c7, ctx_r1.selectedValues, ctx_r1.clearItem));\n} }\nfunction NgSelectComponent_ng_container_9_ng_template_1_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵelement(0, \"div\", 19);\n} }\nfunction NgSelectComponent_ng_container_9_ng_template_3_Template(rf, ctx) { }\nfunction NgSelectComponent_ng_container_9_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵelementContainerStart(0);\n    ɵngcc0.ɵɵtemplate(1, NgSelectComponent_ng_container_9_ng_template_1_Template, 1, 0, \"ng-template\", null, 17, ɵngcc0.ɵɵtemplateRefExtractor);\n    ɵngcc0.ɵɵtemplate(3, NgSelectComponent_ng_container_9_ng_template_3_Template, 0, 0, \"ng-template\", 18);\n    ɵngcc0.ɵɵelementContainerEnd();\n} if (rf & 2) {\n    const _r16 = ɵngcc0.ɵɵreference(2);\n    const ctx_r3 = ɵngcc0.ɵɵnextContext();\n    ɵngcc0.ɵɵadvance(3);\n    ɵngcc0.ɵɵproperty(\"ngTemplateOutlet\", ctx_r3.loadingSpinnerTemplate || _r16);\n} }\nfunction NgSelectComponent_span_10_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵelementStart(0, \"span\", 20)(1, \"span\", 21);\n    ɵngcc0.ɵɵtext(2, \"\\u00D7\");\n    ɵngcc0.ɵɵelementEnd()();\n} if (rf & 2) {\n    const ctx_r4 = ɵngcc0.ɵɵnextContext();\n    ɵngcc0.ɵɵpropertyInterpolate(\"title\", ctx_r4.clearAllText);\n} }\nfunction NgSelectComponent_ng_dropdown_panel_13_div_2_ng_template_1_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵelement(0, \"span\", 27);\n} if (rf & 2) {\n    const item_r24 = ɵngcc0.ɵɵnextContext().$implicit;\n    const ctx_r26 = ɵngcc0.ɵɵnextContext(2);\n    ɵngcc0.ɵɵproperty(\"ngItemLabel\", item_r24.label)(\"escape\", ctx_r26.escapeHTML);\n} }\nfunction NgSelectComponent_ng_dropdown_panel_13_div_2_ng_template_3_Template(rf, ctx) { }\nconst _c8 = function (a0, a1, a2, a3) { return { item: a0, item$: a1, index: a2, searchTerm: a3 }; };\nfunction NgSelectComponent_ng_dropdown_panel_13_div_2_Template(rf, ctx) { if (rf & 1) {\n    const _r30 = ɵngcc0.ɵɵgetCurrentView();\n    ɵngcc0.ɵɵelementStart(0, \"div\", 25);\n    ɵngcc0.ɵɵlistener(\"click\", function NgSelectComponent_ng_dropdown_panel_13_div_2_Template_div_click_0_listener() { const restoredCtx = ɵngcc0.ɵɵrestoreView(_r30); const item_r24 = restoredCtx.$implicit; const ctx_r29 = ɵngcc0.ɵɵnextContext(2); return ɵngcc0.ɵɵresetView(ctx_r29.toggleItem(item_r24)); })(\"mouseover\", function NgSelectComponent_ng_dropdown_panel_13_div_2_Template_div_mouseover_0_listener() { const restoredCtx = ɵngcc0.ɵɵrestoreView(_r30); const item_r24 = restoredCtx.$implicit; const ctx_r31 = ɵngcc0.ɵɵnextContext(2); return ɵngcc0.ɵɵresetView(ctx_r31.onItemHover(item_r24)); });\n    ɵngcc0.ɵɵtemplate(1, NgSelectComponent_ng_dropdown_panel_13_div_2_ng_template_1_Template, 1, 2, \"ng-template\", null, 26, ɵngcc0.ɵɵtemplateRefExtractor);\n    ɵngcc0.ɵɵtemplate(3, NgSelectComponent_ng_dropdown_panel_13_div_2_ng_template_3_Template, 0, 0, \"ng-template\", 14);\n    ɵngcc0.ɵɵelementEnd();\n} if (rf & 2) {\n    const item_r24 = ctx.$implicit;\n    const _r25 = ɵngcc0.ɵɵreference(2);\n    const ctx_r19 = ɵngcc0.ɵɵnextContext(2);\n    ɵngcc0.ɵɵclassProp(\"ng-option-disabled\", item_r24.disabled)(\"ng-option-selected\", item_r24.selected)(\"ng-optgroup\", item_r24.children)(\"ng-option\", !item_r24.children)(\"ng-option-child\", !!item_r24.parent)(\"ng-option-marked\", item_r24 === ctx_r19.itemsList.markedItem);\n    ɵngcc0.ɵɵattribute(\"role\", item_r24.children ? \"group\" : \"option\")(\"aria-selected\", item_r24.selected)(\"id\", item_r24 == null ? null : item_r24.htmlId);\n    ɵngcc0.ɵɵadvance(3);\n    ɵngcc0.ɵɵproperty(\"ngTemplateOutlet\", item_r24.children ? ctx_r19.optgroupTemplate || _r25 : ctx_r19.optionTemplate || _r25)(\"ngTemplateOutletContext\", ɵngcc0.ɵɵpureFunction4(17, _c8, item_r24.value, item_r24, item_r24.index, ctx_r19.searchTerm));\n} }\nfunction NgSelectComponent_ng_dropdown_panel_13_div_3_ng_template_1_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵelementStart(0, \"span\")(1, \"span\", 30);\n    ɵngcc0.ɵɵtext(2);\n    ɵngcc0.ɵɵelementEnd();\n    ɵngcc0.ɵɵtext(3);\n    ɵngcc0.ɵɵelementEnd();\n} if (rf & 2) {\n    const ctx_r33 = ɵngcc0.ɵɵnextContext(3);\n    ɵngcc0.ɵɵadvance(2);\n    ɵngcc0.ɵɵtextInterpolate(ctx_r33.addTagText);\n    ɵngcc0.ɵɵadvance(1);\n    ɵngcc0.ɵɵtextInterpolate1(\"\\\"\", ctx_r33.searchTerm, \"\\\"\");\n} }\nfunction NgSelectComponent_ng_dropdown_panel_13_div_3_ng_template_3_Template(rf, ctx) { }\nfunction NgSelectComponent_ng_dropdown_panel_13_div_3_Template(rf, ctx) { if (rf & 1) {\n    const _r36 = ɵngcc0.ɵɵgetCurrentView();\n    ɵngcc0.ɵɵelementStart(0, \"div\", 28);\n    ɵngcc0.ɵɵlistener(\"mouseover\", function NgSelectComponent_ng_dropdown_panel_13_div_3_Template_div_mouseover_0_listener() { ɵngcc0.ɵɵrestoreView(_r36); const ctx_r35 = ɵngcc0.ɵɵnextContext(2); return ɵngcc0.ɵɵresetView(ctx_r35.itemsList.unmarkItem()); })(\"click\", function NgSelectComponent_ng_dropdown_panel_13_div_3_Template_div_click_0_listener() { ɵngcc0.ɵɵrestoreView(_r36); const ctx_r37 = ɵngcc0.ɵɵnextContext(2); return ɵngcc0.ɵɵresetView(ctx_r37.selectTag()); });\n    ɵngcc0.ɵɵtemplate(1, NgSelectComponent_ng_dropdown_panel_13_div_3_ng_template_1_Template, 4, 2, \"ng-template\", null, 29, ɵngcc0.ɵɵtemplateRefExtractor);\n    ɵngcc0.ɵɵtemplate(3, NgSelectComponent_ng_dropdown_panel_13_div_3_ng_template_3_Template, 0, 0, \"ng-template\", 14);\n    ɵngcc0.ɵɵelementEnd();\n} if (rf & 2) {\n    const _r32 = ɵngcc0.ɵɵreference(2);\n    const ctx_r20 = ɵngcc0.ɵɵnextContext(2);\n    ɵngcc0.ɵɵclassProp(\"ng-option-marked\", !ctx_r20.itemsList.markedItem);\n    ɵngcc0.ɵɵadvance(3);\n    ɵngcc0.ɵɵproperty(\"ngTemplateOutlet\", ctx_r20.tagTemplate || _r32)(\"ngTemplateOutletContext\", ɵngcc0.ɵɵpureFunction1(4, _c3, ctx_r20.searchTerm));\n} }\nfunction NgSelectComponent_ng_dropdown_panel_13_ng_container_4_ng_template_1_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵelementStart(0, \"div\", 32);\n    ɵngcc0.ɵɵtext(1);\n    ɵngcc0.ɵɵelementEnd();\n} if (rf & 2) {\n    const ctx_r39 = ɵngcc0.ɵɵnextContext(3);\n    ɵngcc0.ɵɵadvance(1);\n    ɵngcc0.ɵɵtextInterpolate(ctx_r39.notFoundText);\n} }\nfunction NgSelectComponent_ng_dropdown_panel_13_ng_container_4_ng_template_3_Template(rf, ctx) { }\nfunction NgSelectComponent_ng_dropdown_panel_13_ng_container_4_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵelementContainerStart(0);\n    ɵngcc0.ɵɵtemplate(1, NgSelectComponent_ng_dropdown_panel_13_ng_container_4_ng_template_1_Template, 2, 1, \"ng-template\", null, 31, ɵngcc0.ɵɵtemplateRefExtractor);\n    ɵngcc0.ɵɵtemplate(3, NgSelectComponent_ng_dropdown_panel_13_ng_container_4_ng_template_3_Template, 0, 0, \"ng-template\", 14);\n    ɵngcc0.ɵɵelementContainerEnd();\n} if (rf & 2) {\n    const _r38 = ɵngcc0.ɵɵreference(2);\n    const ctx_r21 = ɵngcc0.ɵɵnextContext(2);\n    ɵngcc0.ɵɵadvance(3);\n    ɵngcc0.ɵɵproperty(\"ngTemplateOutlet\", ctx_r21.notFoundTemplate || _r38)(\"ngTemplateOutletContext\", ɵngcc0.ɵɵpureFunction1(2, _c3, ctx_r21.searchTerm));\n} }\nfunction NgSelectComponent_ng_dropdown_panel_13_ng_container_5_ng_template_1_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵelementStart(0, \"div\", 32);\n    ɵngcc0.ɵɵtext(1);\n    ɵngcc0.ɵɵelementEnd();\n} if (rf & 2) {\n    const ctx_r42 = ɵngcc0.ɵɵnextContext(3);\n    ɵngcc0.ɵɵadvance(1);\n    ɵngcc0.ɵɵtextInterpolate(ctx_r42.typeToSearchText);\n} }\nfunction NgSelectComponent_ng_dropdown_panel_13_ng_container_5_ng_template_3_Template(rf, ctx) { }\nfunction NgSelectComponent_ng_dropdown_panel_13_ng_container_5_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵelementContainerStart(0);\n    ɵngcc0.ɵɵtemplate(1, NgSelectComponent_ng_dropdown_panel_13_ng_container_5_ng_template_1_Template, 2, 1, \"ng-template\", null, 33, ɵngcc0.ɵɵtemplateRefExtractor);\n    ɵngcc0.ɵɵtemplate(3, NgSelectComponent_ng_dropdown_panel_13_ng_container_5_ng_template_3_Template, 0, 0, \"ng-template\", 18);\n    ɵngcc0.ɵɵelementContainerEnd();\n} if (rf & 2) {\n    const _r41 = ɵngcc0.ɵɵreference(2);\n    const ctx_r22 = ɵngcc0.ɵɵnextContext(2);\n    ɵngcc0.ɵɵadvance(3);\n    ɵngcc0.ɵɵproperty(\"ngTemplateOutlet\", ctx_r22.typeToSearchTemplate || _r41);\n} }\nfunction NgSelectComponent_ng_dropdown_panel_13_ng_container_6_ng_template_1_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵelementStart(0, \"div\", 32);\n    ɵngcc0.ɵɵtext(1);\n    ɵngcc0.ɵɵelementEnd();\n} if (rf & 2) {\n    const ctx_r45 = ɵngcc0.ɵɵnextContext(3);\n    ɵngcc0.ɵɵadvance(1);\n    ɵngcc0.ɵɵtextInterpolate(ctx_r45.loadingText);\n} }\nfunction NgSelectComponent_ng_dropdown_panel_13_ng_container_6_ng_template_3_Template(rf, ctx) { }\nfunction NgSelectComponent_ng_dropdown_panel_13_ng_container_6_Template(rf, ctx) { if (rf & 1) {\n    ɵngcc0.ɵɵelementContainerStart(0);\n    ɵngcc0.ɵɵtemplate(1, NgSelectComponent_ng_dropdown_panel_13_ng_container_6_ng_template_1_Template, 2, 1, \"ng-template\", null, 34, ɵngcc0.ɵɵtemplateRefExtractor);\n    ɵngcc0.ɵɵtemplate(3, NgSelectComponent_ng_dropdown_panel_13_ng_container_6_ng_template_3_Template, 0, 0, \"ng-template\", 14);\n    ɵngcc0.ɵɵelementContainerEnd();\n} if (rf & 2) {\n    const _r44 = ɵngcc0.ɵɵreference(2);\n    const ctx_r23 = ɵngcc0.ɵɵnextContext(2);\n    ɵngcc0.ɵɵadvance(3);\n    ɵngcc0.ɵɵproperty(\"ngTemplateOutlet\", ctx_r23.loadingTextTemplate || _r44)(\"ngTemplateOutletContext\", ɵngcc0.ɵɵpureFunction1(2, _c3, ctx_r23.searchTerm));\n} }\nfunction NgSelectComponent_ng_dropdown_panel_13_Template(rf, ctx) { if (rf & 1) {\n    const _r48 = ɵngcc0.ɵɵgetCurrentView();\n    ɵngcc0.ɵɵelementStart(0, \"ng-dropdown-panel\", 22);\n    ɵngcc0.ɵɵlistener(\"update\", function NgSelectComponent_ng_dropdown_panel_13_Template_ng_dropdown_panel_update_0_listener($event) { ɵngcc0.ɵɵrestoreView(_r48); const ctx_r47 = ɵngcc0.ɵɵnextContext(); return ɵngcc0.ɵɵresetView(ctx_r47.viewPortItems = $event); })(\"scroll\", function NgSelectComponent_ng_dropdown_panel_13_Template_ng_dropdown_panel_scroll_0_listener($event) { ɵngcc0.ɵɵrestoreView(_r48); const ctx_r49 = ɵngcc0.ɵɵnextContext(); return ɵngcc0.ɵɵresetView(ctx_r49.scroll.emit($event)); })(\"scrollToEnd\", function NgSelectComponent_ng_dropdown_panel_13_Template_ng_dropdown_panel_scrollToEnd_0_listener($event) { ɵngcc0.ɵɵrestoreView(_r48); const ctx_r50 = ɵngcc0.ɵɵnextContext(); return ɵngcc0.ɵɵresetView(ctx_r50.scrollToEnd.emit($event)); })(\"outsideClick\", function NgSelectComponent_ng_dropdown_panel_13_Template_ng_dropdown_panel_outsideClick_0_listener() { ɵngcc0.ɵɵrestoreView(_r48); const ctx_r51 = ɵngcc0.ɵɵnextContext(); return ɵngcc0.ɵɵresetView(ctx_r51.close()); });\n    ɵngcc0.ɵɵelementContainerStart(1);\n    ɵngcc0.ɵɵtemplate(2, NgSelectComponent_ng_dropdown_panel_13_div_2_Template, 4, 22, 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ɵngcc0.ɵɵdefineDirective({ type: NgOptionTemplateDirective, selectors: [[\"\", \"ng-option-tmp\", \"\"]] });\nNgOptionTemplateDirective.ctorParameters = () => [\n    { type: TemplateRef }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(NgOptionTemplateDirective, [{\n        type: Directive,\n        args: [{ selector: '[ng-option-tmp]' }]\n    }], function () { return [{ type: ɵngcc0.TemplateRef }]; }, null); })();\nclass NgOptgroupTemplateDirective {\n    constructor(template) {\n        this.template = template;\n    }\n}\nNgOptgroupTemplateDirective.ɵfac = function NgOptgroupTemplateDirective_Factory(t) { return new (t || NgOptgroupTemplateDirective)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.TemplateRef)); };\nNgOptgroupTemplateDirective.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: NgOptgroupTemplateDirective, selectors: [[\"\", \"ng-optgroup-tmp\", \"\"]] });\nNgOptgroupTemplateDirective.ctorParameters = () => [\n    { type: 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NgFooterTemplateDirective)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.TemplateRef)); };\nNgFooterTemplateDirective.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: NgFooterTemplateDirective, selectors: [[\"\", \"ng-footer-tmp\", \"\"]] });\nNgFooterTemplateDirective.ctorParameters = () => [\n    { type: TemplateRef }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(NgFooterTemplateDirective, [{\n        type: Directive,\n        args: [{ selector: '[ng-footer-tmp]' }]\n    }], function () { return [{ type: ɵngcc0.TemplateRef }]; }, null); })();\nclass NgNotFoundTemplateDirective {\n    constructor(template) {\n        this.template = template;\n    }\n}\nNgNotFoundTemplateDirective.ɵfac = function NgNotFoundTemplateDirective_Factory(t) { return new (t || NgNotFoundTemplateDirective)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.TemplateRef)); };\nNgNotFoundTemplateDirective.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: NgNotFoundTemplateDirective, selectors: [[\"\", \"ng-notfound-tmp\", \"\"]] });\nNgNotFoundTemplateDirective.ctorParameters = () => [\n    { type: TemplateRef }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(NgNotFoundTemplateDirective, [{\n        type: Directive,\n        args: [{ selector: '[ng-notfound-tmp]' }]\n    }], function () { return [{ type: ɵngcc0.TemplateRef }]; }, null); })();\nclass NgTypeToSearchTemplateDirective {\n    constructor(template) {\n        this.template = template;\n    }\n}\nNgTypeToSearchTemplateDirective.ɵfac = function NgTypeToSearchTemplateDirective_Factory(t) { return new (t || NgTypeToSearchTemplateDirective)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.TemplateRef)); };\nNgTypeToSearchTemplateDirective.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: NgTypeToSearchTemplateDirective, selectors: [[\"\", \"ng-typetosearch-tmp\", \"\"]] });\nNgTypeToSearchTemplateDirective.ctorParameters = () => [\n    { type: TemplateRef }\n];\n(function 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      args: [{ selector: '[ng-loadingtext-tmp]' }]\n    }], function () { return [{ type: ɵngcc0.TemplateRef }]; }, null); })();\nclass NgTagTemplateDirective {\n    constructor(template) {\n        this.template = template;\n    }\n}\nNgTagTemplateDirective.ɵfac = function NgTagTemplateDirective_Factory(t) { return new (t || NgTagTemplateDirective)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.TemplateRef)); };\nNgTagTemplateDirective.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: NgTagTemplateDirective, selectors: [[\"\", \"ng-tag-tmp\", \"\"]] });\nNgTagTemplateDirective.ctorParameters = () => [\n    { type: TemplateRef }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(NgTagTemplateDirective, [{\n        type: Directive,\n        args: [{ selector: '[ng-tag-tmp]' }]\n    }], function () { return [{ type: ɵngcc0.TemplateRef }]; }, null); })();\nclass NgLoadingSpinnerTemplateDirective {\n    constructor(template) {\n        this.template = template;\n    }\n}\nNgLoadingSpinnerTemplateDirective.ɵfac = function NgLoadingSpinnerTemplateDirective_Factory(t) { return new (t || NgLoadingSpinnerTemplateDirective)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.TemplateRef)); };\nNgLoadingSpinnerTemplateDirective.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: NgLoadingSpinnerTemplateDirective, selectors: [[\"\", \"ng-loadingspinner-tmp\", \"\"]] });\nNgLoadingSpinnerTemplateDirective.ctorParameters = () => [\n    { type: TemplateRef }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(NgLoadingSpinnerTemplateDirective, [{\n        type: Directive,\n        args: [{ selector: '[ng-loadingspinner-tmp]' }]\n    }], function () { return [{ type: ɵngcc0.TemplateRef }]; }, null); })();\n\nclass ConsoleService {\n    warn(message) {\n        console.warn(message);\n    }\n}\nConsoleService.ɵfac = function ConsoleService_Factory(t) { return new (t || ConsoleService)(); };\nConsoleService.ɵprov = i0.ɵɵdefineInjectable({ factory: function ConsoleService_Factory() { return new ConsoleService(); }, token: ConsoleService, providedIn: \"root\" });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(ConsoleService, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], null, null); })();\n\nfunction newId() {\n    // First character is an 'a', it's good practice to tag id to begin with a letter\n    return 'axxxxxxxxxxx'.replace(/[x]/g, function (_) {\n        // tslint:disable-next-line:no-bitwise\n        const val = Math.random() * 16 | 0;\n        return val.toString(16);\n    });\n}\n\nconst diacritics = {\n    '\\u24B6': 'A',\n    '\\uFF21': 'A',\n    '\\u00C0': 'A',\n    '\\u00C1': 'A',\n    '\\u00C2': 'A',\n    '\\u1EA6': 'A',\n    '\\u1EA4': 'A',\n    '\\u1EAA': 'A',\n    '\\u1EA8': 'A',\n    '\\u00C3': 'A',\n    '\\u0100': 'A',\n    '\\u0102': 'A',\n    '\\u1EB0': 'A',\n    '\\u1EAE': 'A',\n    '\\u1EB4': 'A',\n    '\\u1EB2': 'A',\n    '\\u0226': 'A',\n    '\\u01E0': 'A',\n    '\\u00C4': 'A',\n    '\\u01DE': 'A',\n    '\\u1EA2': 'A',\n    '\\u00C5': 'A',\n    '\\u01FA': 'A',\n    '\\u01CD': 'A',\n    '\\u0200': 'A',\n    '\\u0202': 'A',\n    '\\u1EA0': 'A',\n    '\\u1EAC': 'A',\n    '\\u1EB6': 'A',\n    '\\u1E00': 'A',\n    '\\u0104': 'A',\n    '\\u023A': 'A',\n    '\\u2C6F': 'A',\n    '\\uA732': 'AA',\n    '\\u00C6': 'AE',\n    '\\u01FC': 'AE',\n    '\\u01E2': 'AE',\n    '\\uA734': 'AO',\n    '\\uA736': 'AU',\n    '\\uA738': 'AV',\n    '\\uA73A': 'AV',\n    '\\uA73C': 'AY',\n    '\\u24B7': 'B',\n    '\\uFF22': 'B',\n    '\\u1E02': 'B',\n    '\\u1E04': 'B',\n    '\\u1E06': 'B',\n    '\\u0243': 'B',\n    '\\u0182': 'B',\n    '\\u0181': 'B',\n    '\\u24B8': 'C',\n    '\\uFF23': 'C',\n    '\\u0106': 'C',\n    '\\u0108': 'C',\n    '\\u010A': 'C',\n    '\\u010C': 'C',\n    '\\u00C7': 'C',\n    '\\u1E08': 'C',\n    '\\u0187': 'C',\n    '\\u023B': 'C',\n    '\\uA73E': 'C',\n    '\\u24B9': 'D',\n    '\\uFF24': 'D',\n    '\\u1E0A': 'D',\n    '\\u010E': 'D',\n    '\\u1E0C': 'D',\n    '\\u1E10': 'D',\n    '\\u1E12': 'D',\n    '\\u1E0E': 'D',\n    '\\u0110': 'D',\n    '\\u018B': 'D',\n    '\\u018A': 'D',\n    '\\u0189': 'D',\n    '\\uA779': 'D',\n    '\\u01F1': 'DZ',\n    '\\u01C4': 'DZ',\n    '\\u01F2': 'Dz',\n    '\\u01C5': 'Dz',\n    '\\u24BA': 'E',\n    '\\uFF25': 'E',\n    '\\u00C8': 'E',\n    '\\u00C9': 'E',\n    '\\u00CA': 'E',\n    '\\u1EC0': 'E',\n    '\\u1EBE': 'E',\n    '\\u1EC4': 'E',\n    '\\u1EC2': 'E',\n    '\\u1EBC': 'E',\n    '\\u0112': 'E',\n    '\\u1E14': 'E',\n    '\\u1E16': 'E',\n    '\\u0114': 'E',\n    '\\u0116': 'E',\n    '\\u00CB': 'E',\n    '\\u1EBA': 'E',\n    '\\u011A': 'E',\n    '\\u0204': 'E',\n    '\\u0206': 'E',\n    '\\u1EB8': 'E',\n    '\\u1EC6': 'E',\n    '\\u0228': 'E',\n    '\\u1E1C': 'E',\n    '\\u0118': 'E',\n    '\\u1E18': 'E',\n    '\\u1E1A': 'E',\n    '\\u0190': 'E',\n    '\\u018E': 'E',\n    '\\u24BB': 'F',\n    '\\uFF26': 'F',\n    '\\u1E1E': 'F',\n    '\\u0191': 'F',\n    '\\uA77B': 'F',\n    '\\u24BC': 'G',\n    '\\uFF27': 'G',\n    '\\u01F4': 'G',\n    '\\u011C': 'G',\n    '\\u1E20': 'G',\n    '\\u011E': 'G',\n    '\\u0120': 'G',\n    '\\u01E6': 'G',\n    '\\u0122': 'G',\n    '\\u01E4': 'G',\n    '\\u0193': 'G',\n    '\\uA7A0': 'G',\n    '\\uA77D': 'G',\n    '\\uA77E': 'G',\n    '\\u24BD': 'H',\n    '\\uFF28': 'H',\n    '\\u0124': 'H',\n    '\\u1E22': 'H',\n    '\\u1E26': 'H',\n    '\\u021E': 'H',\n    '\\u1E24': 'H',\n    '\\u1E28': 'H',\n    '\\u1E2A': 'H',\n    '\\u0126': 'H',\n    '\\u2C67': 'H',\n    '\\u2C75': 'H',\n    '\\uA78D': 'H',\n    '\\u24BE': 'I',\n    '\\uFF29': 'I',\n    '\\u00CC': 'I',\n    '\\u00CD': 'I',\n    '\\u00CE': 'I',\n    '\\u0128': 'I',\n    '\\u012A': 'I',\n    '\\u012C': 'I',\n    '\\u0130': 'I',\n    '\\u00CF': 'I',\n    '\\u1E2E': 'I',\n    '\\u1EC8': 'I',\n    '\\u01CF': 'I',\n    '\\u0208': 'I',\n    '\\u020A': 'I',\n    '\\u1ECA': 'I',\n    '\\u012E': 'I',\n    '\\u1E2C': 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'p',\n    '\\uA753': 'p',\n    '\\uA755': 'p',\n    '\\u24E0': 'q',\n    '\\uFF51': 'q',\n    '\\u024B': 'q',\n    '\\uA757': 'q',\n    '\\uA759': 'q',\n    '\\u24E1': 'r',\n    '\\uFF52': 'r',\n    '\\u0155': 'r',\n    '\\u1E59': 'r',\n    '\\u0159': 'r',\n    '\\u0211': 'r',\n    '\\u0213': 'r',\n    '\\u1E5B': 'r',\n    '\\u1E5D': 'r',\n    '\\u0157': 'r',\n    '\\u1E5F': 'r',\n    '\\u024D': 'r',\n    '\\u027D': 'r',\n    '\\uA75B': 'r',\n    '\\uA7A7': 'r',\n    '\\uA783': 'r',\n    '\\u24E2': 's',\n    '\\uFF53': 's',\n    '\\u00DF': 's',\n    '\\u015B': 's',\n    '\\u1E65': 's',\n    '\\u015D': 's',\n    '\\u1E61': 's',\n    '\\u0161': 's',\n    '\\u1E67': 's',\n    '\\u1E63': 's',\n    '\\u1E69': 's',\n    '\\u0219': 's',\n    '\\u015F': 's',\n    '\\u023F': 's',\n    '\\uA7A9': 's',\n    '\\uA785': 's',\n    '\\u1E9B': 's',\n    '\\u24E3': 't',\n    '\\uFF54': 't',\n    '\\u1E6B': 't',\n    '\\u1E97': 't',\n    '\\u0165': 't',\n    '\\u1E6D': 't',\n    '\\u021B': 't',\n    '\\u0163': 't',\n    '\\u1E71': 't',\n    '\\u1E6F': 't',\n    '\\u0167': 't',\n    '\\u01AD': 't',\n    '\\u0288': 't',\n    '\\u2C66': 't',\n    '\\uA787': 't',\n    '\\uA729': 'tz',\n    '\\u24E4': 'u',\n    '\\uFF55': 'u',\n    '\\u00F9': 'u',\n    '\\u00FA': 'u',\n    '\\u00FB': 'u',\n    '\\u0169': 'u',\n    '\\u1E79': 'u',\n    '\\u016B': 'u',\n    '\\u1E7B': 'u',\n    '\\u016D': 'u',\n    '\\u00FC': 'u',\n    '\\u01DC': 'u',\n    '\\u01D8': 'u',\n    '\\u01D6': 'u',\n    '\\u01DA': 'u',\n    '\\u1EE7': 'u',\n    '\\u016F': 'u',\n    '\\u0171': 'u',\n    '\\u01D4': 'u',\n    '\\u0215': 'u',\n    '\\u0217': 'u',\n    '\\u01B0': 'u',\n    '\\u1EEB': 'u',\n    '\\u1EE9': 'u',\n    '\\u1EEF': 'u',\n    '\\u1EED': 'u',\n    '\\u1EF1': 'u',\n    '\\u1EE5': 'u',\n    '\\u1E73': 'u',\n    '\\u0173': 'u',\n    '\\u1E77': 'u',\n    '\\u1E75': 'u',\n    '\\u0289': 'u',\n    '\\u24E5': 'v',\n    '\\uFF56': 'v',\n    '\\u1E7D': 'v',\n    '\\u1E7F': 'v',\n    '\\u028B': 'v',\n    '\\uA75F': 'v',\n    '\\u028C': 'v',\n    '\\uA761': 'vy',\n    '\\u24E6': 'w',\n    '\\uFF57': 'w',\n    '\\u1E81': 'w',\n    '\\u1E83': 'w',\n    '\\u0175': 'w',\n    '\\u1E87': 'w',\n    '\\u1E85': 'w',\n    '\\u1E98': 'w',\n    '\\u1E89': 'w',\n    '\\u2C73': 'w',\n    '\\u24E7': 'x',\n    '\\uFF58': 'x',\n    '\\u1E8B': 'x',\n    '\\u1E8D': 'x',\n    '\\u24E8': 'y',\n    '\\uFF59': 'y',\n    '\\u1EF3': 'y',\n    '\\u00FD': 'y',\n    '\\u0177': 'y',\n    '\\u1EF9': 'y',\n    '\\u0233': 'y',\n    '\\u1E8F': 'y',\n    '\\u00FF': 'y',\n    '\\u1EF7': 'y',\n    '\\u1E99': 'y',\n    '\\u1EF5': 'y',\n    '\\u01B4': 'y',\n    '\\u024F': 'y',\n    '\\u1EFF': 'y',\n    '\\u24E9': 'z',\n    '\\uFF5A': 'z',\n    '\\u017A': 'z',\n    '\\u1E91': 'z',\n    '\\u017C': 'z',\n    '\\u017E': 'z',\n    '\\u1E93': 'z',\n    '\\u1E95': 'z',\n    '\\u01B6': 'z',\n    '\\u0225': 'z',\n    '\\u0240': 'z',\n    '\\u2C6C': 'z',\n    '\\uA763': 'z',\n    '\\u0386': '\\u0391',\n    '\\u0388': '\\u0395',\n    '\\u0389': '\\u0397',\n    '\\u038A': '\\u0399',\n    '\\u03AA': '\\u0399',\n    '\\u038C': '\\u039F',\n    '\\u038E': '\\u03A5',\n    '\\u03AB': '\\u03A5',\n    '\\u038F': '\\u03A9',\n    '\\u03AC': '\\u03B1',\n    '\\u03AD': '\\u03B5',\n    '\\u03AE': '\\u03B7',\n    '\\u03AF': '\\u03B9',\n    '\\u03CA': '\\u03B9',\n    '\\u0390': '\\u03B9',\n    '\\u03CC': '\\u03BF',\n    '\\u03CD': '\\u03C5',\n    '\\u03CB': '\\u03C5',\n    '\\u03B0': '\\u03C5',\n    '\\u03C9': '\\u03C9',\n    '\\u03C2': '\\u03C3'\n};\nfunction stripSpecialChars(text) {\n    const match = (a) => {\n        return diacritics[a] || a;\n    };\n    return text.replace(/[^\\u0000-\\u007E]/g, match);\n}\n\nclass ItemsList {\n    constructor(_ngSelect, _selectionModel) {\n        this._ngSelect = _ngSelect;\n        this._selectionModel = _selectionModel;\n        this._items = [];\n        this._filteredItems = [];\n        this._markedIndex = -1;\n    }\n    get items() {\n        return this._items;\n    }\n    get filteredItems() {\n        return this._filteredItems;\n    }\n    get markedIndex() {\n        return this._markedIndex;\n    }\n    get selectedItems() {\n        return this._selectionModel.value;\n    }\n    get markedItem() {\n        return this._filteredItems[this._markedIndex];\n    }\n    get noItemsToSelect() {\n        return this._ngSelect.hideSelected && this._items.length === this.selectedItems.length;\n    }\n    get maxItemsSelected() {\n        return this._ngSelect.multiple && this._ngSelect.maxSelectedItems <= this.selectedItems.length;\n    }\n    get lastSelectedItem() {\n        let i = this.selectedItems.length - 1;\n        for (; i >= 0; i--) {\n            let item = this.selectedItems[i];\n            if (!item.disabled) {\n                return item;\n            }\n        }\n        return null;\n    }\n    setItems(items) {\n        this._items = items.map((item, index) => this.mapItem(item, index));\n        if (this._ngSelect.groupBy) {\n            this._groups = this._groupBy(this._items, this._ngSelect.groupBy);\n            this._items = this._flatten(this._groups);\n        }\n        else {\n            this._groups = new Map();\n            this._groups.set(undefined, this._items);\n        }\n        this._filteredItems = [...this._items];\n    }\n    select(item) {\n        if (item.selected || this.maxItemsSelected) {\n            return;\n        }\n        const multiple = this._ngSelect.multiple;\n        if (!multiple) {\n            this.clearSelected();\n        }\n        this._selectionModel.select(item, multiple, this._ngSelect.selectableGroupAsModel);\n        if (this._ngSelect.hideSelected) {\n            this._hideSelected(item);\n        }\n    }\n    unselect(item) {\n        if (!item.selected) {\n            return;\n        }\n        this._selectionModel.unselect(item, this._ngSelect.multiple);\n        if (this._ngSelect.hideSelected && isDefined(item.index) && this._ngSelect.multiple) {\n            this._showSelected(item);\n        }\n    }\n    findItem(value) {\n        let findBy;\n        if (this._ngSelect.compareWith) {\n            findBy = item => this._ngSelect.compareWith(item.value, value);\n        }\n        else if (this._ngSelect.bindValue) {\n            findBy = item => !item.children && this.resolveNested(item.value, this._ngSelect.bindValue) === value;\n        }\n        else {\n            findBy = item => item.value === value ||\n                !item.children && item.label && item.label === this.resolveNested(value, this._ngSelect.bindLabel);\n        }\n        return this._items.find(item => findBy(item));\n    }\n    addItem(item) {\n        const option = this.mapItem(item, this._items.length);\n        this._items.push(option);\n        this._filteredItems.push(option);\n        return option;\n    }\n    clearSelected(keepDisabled = false) {\n        this._selectionModel.clear(keepDisabled);\n        this._items.forEach(item => {\n            item.selected = keepDisabled && item.selected && item.disabled;\n            item.marked = false;\n        });\n        if (this._ngSelect.hideSelected) {\n            this.resetFilteredItems();\n        }\n    }\n    findByLabel(term) {\n        term = stripSpecialChars(term).toLocaleLowerCase();\n        return this.filteredItems.find(item => {\n            const label = stripSpecialChars(item.label).toLocaleLowerCase();\n            return label.substr(0, term.length) === term;\n        });\n    }\n    filter(term) {\n        if (!term) {\n            this.resetFilteredItems();\n            return;\n        }\n        this._filteredItems = [];\n        term = this._ngSelect.searchFn ? term : stripSpecialChars(term).toLocaleLowerCase();\n        const match = this._ngSelect.searchFn || this._defaultSearchFn;\n        const hideSelected = this._ngSelect.hideSelected;\n        for (const key of Array.from(this._groups.keys())) {\n            const matchedItems = [];\n            for (const item of this._groups.get(key)) {\n                if (hideSelected && (item.parent && item.parent.selected || item.selected)) {\n                    continue;\n                }\n                const searchItem = this._ngSelect.searchFn ? item.value : item;\n                if (match(term, searchItem)) {\n                    matchedItems.push(item);\n                }\n            }\n            if (matchedItems.length > 0) {\n                const [last] = matchedItems.slice(-1);\n                if (last.parent) {\n                    const head = this._items.find(x => x === last.parent);\n                    this._filteredItems.push(head);\n                }\n                this._filteredItems.push(...matchedItems);\n            }\n        }\n    }\n    resetFilteredItems() {\n        if (this._filteredItems.length === this._items.length) {\n            return;\n        }\n        if (this._ngSelect.hideSelected && this.selectedItems.length > 0) {\n            this._filteredItems = this._items.filter(x => !x.selected);\n        }\n        else {\n            this._filteredItems = this._items;\n        }\n    }\n    unmarkItem() {\n        this._markedIndex = -1;\n    }\n    markNextItem() {\n        this._stepToItem(+1);\n    }\n    markPreviousItem() {\n        this._stepToItem(-1);\n    }\n    markItem(item) {\n        this._markedIndex = this._filteredItems.indexOf(item);\n    }\n    markSelectedOrDefault(markDefault) {\n        if (this._filteredItems.length === 0) {\n            return;\n        }\n        const lastMarkedIndex = this._getLastMarkedIndex();\n        if (lastMarkedIndex > -1) {\n            this._markedIndex = lastMarkedIndex;\n        }\n        else {\n            this._markedIndex = markDefault ? this.filteredItems.findIndex(x => !x.disabled) : -1;\n        }\n    }\n    resolveNested(option, key) {\n        if (!isObject(option)) {\n            return option;\n        }\n        if (key.indexOf('.') === -1) {\n            return option[key];\n        }\n        else {\n            let keys = key.split('.');\n            let value = option;\n            for (let i = 0, len = keys.length; i < len; ++i) {\n                if (value == null) {\n                    return null;\n                }\n                value = value[keys[i]];\n            }\n            return value;\n        }\n    }\n    mapItem(item, index) {\n        const label = isDefined(item.$ngOptionLabel) ? item.$ngOptionLabel : this.resolveNested(item, this._ngSelect.bindLabel);\n        const value = isDefined(item.$ngOptionValue) ? item.$ngOptionValue : item;\n        return {\n            index: index,\n            label: isDefined(label) ? label.toString() : '',\n            value: value,\n            disabled: item.disabled,\n            htmlId: `${this._ngSelect.dropdownId}-${index}`,\n        };\n    }\n    mapSelectedItems() {\n        const multiple = this._ngSelect.multiple;\n        for (const selected of this.selectedItems) {\n            const value = this._ngSelect.bindValue ? this.resolveNested(selected.value, this._ngSelect.bindValue) : selected.value;\n            const item = isDefined(value) ? this.findItem(value) : null;\n            this._selectionModel.unselect(selected, multiple);\n            this._selectionModel.select(item || selected, multiple, this._ngSelect.selectableGroupAsModel);\n        }\n        if (this._ngSelect.hideSelected) {\n            this._filteredItems = this.filteredItems.filter(x => this.selectedItems.indexOf(x) === -1);\n        }\n    }\n    _showSelected(item) {\n        this._filteredItems.push(item);\n        if (item.parent) {\n            const parent = item.parent;\n            const parentExists = this._filteredItems.find(x => x === parent);\n            if (!parentExists) {\n                this._filteredItems.push(parent);\n            }\n        }\n        else if (item.children) {\n            for (const child of item.children) {\n                child.selected = false;\n                this._filteredItems.push(child);\n            }\n        }\n        this._filteredItems = [...this._filteredItems.sort((a, b) => (a.index - b.index))];\n    }\n    _hideSelected(item) {\n        this._filteredItems = this._filteredItems.filter(x => x !== item);\n        if (item.parent) {\n            const children = item.parent.children;\n            if (children.every(x => x.selected)) {\n                this._filteredItems = this._filteredItems.filter(x => x !== item.parent);\n            }\n        }\n        else if (item.children) {\n            this._filteredItems = this.filteredItems.filter(x => x.parent !== item);\n        }\n    }\n    _defaultSearchFn(search, opt) {\n        const label = stripSpecialChars(opt.label).toLocaleLowerCase();\n        return label.indexOf(search) > -1;\n    }\n    _getNextItemIndex(steps) {\n        if (steps > 0) {\n            return (this._markedIndex >= this._filteredItems.length - 1) ? 0 : (this._markedIndex + 1);\n        }\n        return (this._markedIndex <= 0) ? (this._filteredItems.length - 1) : (this._markedIndex - 1);\n    }\n    _stepToItem(steps) {\n        if (this._filteredItems.length === 0 || this._filteredItems.every(x => x.disabled)) {\n            return;\n        }\n        this._markedIndex = this._getNextItemIndex(steps);\n        if (this.markedItem.disabled) {\n            this._stepToItem(steps);\n        }\n    }\n    _getLastMarkedIndex() {\n        if (this._ngSelect.hideSelected) {\n            return -1;\n        }\n        if (this._markedIndex > -1 && this.markedItem === undefined) {\n            return -1;\n        }\n        const selectedIndex = this._filteredItems.indexOf(this.lastSelectedItem);\n        if (this.lastSelectedItem && selectedIndex < 0) {\n            return -1;\n        }\n        return Math.max(this.markedIndex, selectedIndex);\n    }\n    _groupBy(items, prop) {\n        const groups = new Map();\n        if (items.length === 0) {\n            return groups;\n        }\n        // Check if items are already grouped by given key.\n        if (Array.isArray(items[0].value[prop])) {\n            for (const item of items) {\n                const children = (item.value[prop] || []).map((x, index) => this.mapItem(x, index));\n                groups.set(item, children);\n            }\n            return groups;\n        }\n        const isFnKey = isFunction(this._ngSelect.groupBy);\n        const keyFn = (item) => {\n            let key = isFnKey ? prop(item.value) : item.value[prop];\n            return isDefined(key) ? key : undefined;\n        };\n        // Group items by key.\n        for (const item of items) {\n            let key = keyFn(item);\n            const group = groups.get(key);\n            if (group) {\n                group.push(item);\n            }\n            else {\n                groups.set(key, [item]);\n            }\n        }\n        return groups;\n    }\n    _flatten(groups) {\n        const isGroupByFn = isFunction(this._ngSelect.groupBy);\n        const items = [];\n        for (const key of Array.from(groups.keys())) {\n            let i = items.length;\n            if (key === undefined) {\n                const withoutGroup = groups.get(undefined) || [];\n                items.push(...withoutGroup.map(x => {\n                    x.index = i++;\n                    return x;\n                }));\n                continue;\n            }\n            const isObjectKey = isObject(key);\n            const parent = {\n                label: isObjectKey ? '' : String(key),\n                children: undefined,\n                parent: null,\n                index: i++,\n                disabled: !this._ngSelect.selectableGroup,\n                htmlId: newId(),\n            };\n            const groupKey = isGroupByFn ? this._ngSelect.bindLabel : this._ngSelect.groupBy;\n            const groupValue = this._ngSelect.groupValue || (() => {\n                if (isObjectKey) {\n                    return key.value;\n                }\n                return { [groupKey]: key };\n            });\n            const children = groups.get(key).map(x => {\n                x.parent = parent;\n                x.children = undefined;\n                x.index = i++;\n                return x;\n            });\n            parent.children = children;\n            parent.value = groupValue(key, children.map(x => x.value));\n            items.push(parent);\n            items.push(...children);\n        }\n        return items;\n    }\n}\n\nvar KeyCode;\n(function (KeyCode) {\n    KeyCode[KeyCode[\"Tab\"] = 9] = \"Tab\";\n    KeyCode[KeyCode[\"Enter\"] = 13] = \"Enter\";\n    KeyCode[KeyCode[\"Esc\"] = 27] = \"Esc\";\n    KeyCode[KeyCode[\"Space\"] = 32] = \"Space\";\n    KeyCode[KeyCode[\"ArrowUp\"] = 38] = \"ArrowUp\";\n    KeyCode[KeyCode[\"ArrowDown\"] = 40] = \"ArrowDown\";\n    KeyCode[KeyCode[\"Backspace\"] = 8] = \"Backspace\";\n})(KeyCode || (KeyCode = {}));\n\nclass NgDropdownPanelService {\n    constructor() {\n        this._dimensions = {\n            itemHeight: 0,\n            panelHeight: 0,\n            itemsPerViewport: 0\n        };\n    }\n    get dimensions() {\n        return this._dimensions;\n    }\n    calculateItems(scrollPos, itemsLength, buffer) {\n        const d = this._dimensions;\n        const scrollHeight = d.itemHeight * itemsLength;\n        const scrollTop = Math.max(0, scrollPos);\n        const indexByScrollTop = scrollTop / scrollHeight * itemsLength;\n        let end = Math.min(itemsLength, Math.ceil(indexByScrollTop) + (d.itemsPerViewport + 1));\n        const maxStartEnd = end;\n        const maxStart = Math.max(0, maxStartEnd - d.itemsPerViewport);\n        let start = Math.min(maxStart, Math.floor(indexByScrollTop));\n        let topPadding = d.itemHeight * Math.ceil(start) - (d.itemHeight * Math.min(start, buffer));\n        topPadding = !isNaN(topPadding) ? topPadding : 0;\n        start = !isNaN(start) ? start : -1;\n        end = !isNaN(end) ? end : -1;\n        start -= buffer;\n        start = Math.max(0, start);\n        end += buffer;\n        end = Math.min(itemsLength, end);\n        return {\n            topPadding,\n            scrollHeight,\n            start,\n            end\n        };\n    }\n    setDimensions(itemHeight, panelHeight) {\n        const itemsPerViewport = Math.max(1, Math.floor(panelHeight / itemHeight));\n        this._dimensions = {\n            itemHeight,\n            panelHeight,\n            itemsPerViewport\n        };\n    }\n    getScrollTo(itemTop, itemHeight, lastScroll) {\n        const { panelHeight } = this.dimensions;\n        const itemBottom = itemTop + itemHeight;\n        const top = lastScroll;\n        const bottom = top + panelHeight;\n        if (panelHeight >= itemBottom && lastScroll === itemTop) {\n            return null;\n        }\n        if (itemBottom > bottom) {\n            return top + itemBottom - bottom;\n        }\n        else if (itemTop <= top) {\n            return itemTop;\n        }\n        return null;\n    }\n}\nNgDropdownPanelService.ɵfac = function NgDropdownPanelService_Factory(t) { return new (t || NgDropdownPanelService)(); };\nNgDropdownPanelService.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: NgDropdownPanelService, factory: NgDropdownPanelService.ɵfac });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(NgDropdownPanelService, [{\n        type: Injectable\n    }], function () { return []; }, null); })();\n\nconst CSS_POSITIONS = ['top', 'right', 'bottom', 'left'];\nconst SCROLL_SCHEDULER = typeof requestAnimationFrame !== 'undefined' ? animationFrameScheduler : asapScheduler;\nclass NgDropdownPanelComponent {\n    constructor(_renderer, _zone, _panelService, _elementRef, _document) {\n        this._renderer = _renderer;\n        this._zone = _zone;\n        this._panelService = _panelService;\n        this._document = _document;\n        this.items = [];\n        this.position = 'auto';\n        this.virtualScroll = false;\n        this.filterValue = null;\n        this.update = new EventEmitter();\n        this.scroll = new EventEmitter();\n        this.scrollToEnd = new EventEmitter();\n        this.outsideClick = new EventEmitter();\n        this._destroy$ = new Subject();\n        this._scrollToEndFired = false;\n        this._updateScrollHeight = false;\n        this._lastScrollPosition = 0;\n        this._dropdown = _elementRef.nativeElement;\n    }\n    get currentPosition() {\n        return this._currentPosition;\n    }\n    get itemsLength() {\n        return this._itemsLength;\n    }\n    set itemsLength(value) {\n        if (value !== this._itemsLength) {\n            this._itemsLength = value;\n            this._onItemsLengthChanged();\n        }\n    }\n    get _startOffset() {\n        if (this.markedItem) {\n            const { itemHeight, panelHeight } = this._panelService.dimensions;\n            const offset = this.markedItem.index * itemHeight;\n            return panelHeight > offset ? 0 : offset;\n        }\n        return 0;\n    }\n    ngOnInit() {\n        this._select = this._dropdown.parentElement;\n        this._virtualPadding = this.paddingElementRef.nativeElement;\n        this._scrollablePanel = this.scrollElementRef.nativeElement;\n        this._contentPanel = this.contentElementRef.nativeElement;\n        this._handleScroll();\n        this._handleOutsideClick();\n        this._appendDropdown();\n        this._setupMousedownListener();\n    }\n    ngOnChanges(changes) {\n        if (changes.items) {\n            const change = changes.items;\n            this._onItemsChange(change.currentValue, change.firstChange);\n        }\n    }\n    ngOnDestroy() {\n        this._destroy$.next();\n        this._destroy$.complete();\n        this._destroy$.unsubscribe();\n        if (this.appendTo) {\n            this._renderer.removeChild(this._dropdown.parentNode, this._dropdown);\n        }\n    }\n    scrollTo(option, startFromOption = false) {\n        if (!option) {\n            return;\n        }\n        const index = this.items.indexOf(option);\n        if (index < 0 || index >= this.itemsLength) {\n            return;\n        }\n        let scrollTo;\n        if (this.virtualScroll) {\n            const itemHeight = this._panelService.dimensions.itemHeight;\n            scrollTo = this._panelService.getScrollTo(index * itemHeight, itemHeight, this._lastScrollPosition);\n        }\n        else {\n            const item = this._dropdown.querySelector(`#${option.htmlId}`);\n            const lastScroll = startFromOption ? item.offsetTop : this._lastScrollPosition;\n            scrollTo = this._panelService.getScrollTo(item.offsetTop, item.clientHeight, lastScroll);\n        }\n        if (isDefined(scrollTo)) {\n            this._scrollablePanel.scrollTop = scrollTo;\n        }\n    }\n    scrollToTag() {\n        const panel = this._scrollablePanel;\n        panel.scrollTop = panel.scrollHeight - panel.clientHeight;\n    }\n    adjustPosition() {\n        this._updateYPosition();\n    }\n    _handleDropdownPosition() {\n        this._currentPosition = this._calculateCurrentPosition(this._dropdown);\n        if (CSS_POSITIONS.includes(this._currentPosition)) {\n            this._updateDropdownClass(this._currentPosition);\n        }\n        else {\n            this._updateDropdownClass('bottom');\n        }\n        if (this.appendTo) {\n            this._updateYPosition();\n        }\n        this._dropdown.style.opacity = '1';\n    }\n    _updateDropdownClass(currentPosition) {\n        CSS_POSITIONS.forEach((position) => {\n            const REMOVE_CSS_CLASS = `ng-select-${position}`;\n            this._renderer.removeClass(this._dropdown, REMOVE_CSS_CLASS);\n            this._renderer.removeClass(this._select, REMOVE_CSS_CLASS);\n        });\n        const ADD_CSS_CLASS = `ng-select-${currentPosition}`;\n        this._renderer.addClass(this._dropdown, ADD_CSS_CLASS);\n        this._renderer.addClass(this._select, ADD_CSS_CLASS);\n    }\n    _handleScroll() {\n        this._zone.runOutsideAngular(() => {\n            fromEvent(this.scrollElementRef.nativeElement, 'scroll')\n                .pipe(takeUntil(this._destroy$), auditTime(0, SCROLL_SCHEDULER))\n                .subscribe((e) => {\n                const path = e.path || (e.composedPath && e.composedPath());\n                const scrollTop = !path || path.length === 0 ? e.target.scrollTop : path[0].scrollTop;\n                this._onContentScrolled(scrollTop);\n            });\n        });\n    }\n    _handleOutsideClick() {\n        if (!this._document) {\n            return;\n        }\n        this._zone.runOutsideAngular(() => {\n            merge(fromEvent(this._document, 'touchstart', { capture: true }), fromEvent(this._document, 'mousedown', { capture: true })).pipe(takeUntil(this._destroy$))\n                .subscribe($event => this._checkToClose($event));\n        });\n    }\n    _checkToClose($event) {\n        if (this._select.contains($event.target) || this._dropdown.contains($event.target)) {\n            return;\n        }\n        const path = $event.path || ($event.composedPath && $event.composedPath());\n        if ($event.target && $event.target.shadowRoot && path && path[0] && this._select.contains(path[0])) {\n            return;\n        }\n        this._zone.run(() => this.outsideClick.emit());\n    }\n    _onItemsChange(items, firstChange) {\n        this.items = items || [];\n        this._scrollToEndFired = false;\n        this.itemsLength = items.length;\n        if (this.virtualScroll) {\n            this._updateItemsRange(firstChange);\n        }\n        else {\n            this._setVirtualHeight();\n            this._updateItems(firstChange);\n        }\n    }\n    _updateItems(firstChange) {\n        this.update.emit(this.items);\n        if (firstChange === false) {\n            return;\n        }\n        this._zone.runOutsideAngular(() => {\n            Promise.resolve().then(() => {\n                const panelHeight = this._scrollablePanel.clientHeight;\n                this._panelService.setDimensions(0, panelHeight);\n                this._handleDropdownPosition();\n                this.scrollTo(this.markedItem, firstChange);\n            });\n        });\n    }\n    _updateItemsRange(firstChange) {\n        this._zone.runOutsideAngular(() => {\n            this._measureDimensions().then(() => {\n                if (firstChange) {\n                    this._renderItemsRange(this._startOffset);\n                    this._handleDropdownPosition();\n                }\n                else {\n                    this._renderItemsRange();\n                }\n            });\n        });\n    }\n    _onContentScrolled(scrollTop) {\n        if (this.virtualScroll) {\n            this._renderItemsRange(scrollTop);\n        }\n        this._lastScrollPosition = scrollTop;\n        this._fireScrollToEnd(scrollTop);\n    }\n    _updateVirtualHeight(height) {\n        if (this._updateScrollHeight) {\n            this._virtualPadding.style.height = `${height}px`;\n            this._updateScrollHeight = false;\n        }\n    }\n    _setVirtualHeight() {\n        if (!this._virtualPadding) {\n            return;\n        }\n        this._virtualPadding.style.height = `0px`;\n    }\n    _onItemsLengthChanged() {\n        this._updateScrollHeight = true;\n    }\n    _renderItemsRange(scrollTop = null) {\n        if (scrollTop && this._lastScrollPosition === scrollTop) {\n            return;\n        }\n        scrollTop = scrollTop || this._scrollablePanel.scrollTop;\n        const range = this._panelService.calculateItems(scrollTop, this.itemsLength, this.bufferAmount);\n        this._updateVirtualHeight(range.scrollHeight);\n        this._contentPanel.style.transform = `translateY(${range.topPadding}px)`;\n        this._zone.run(() => {\n            this.update.emit(this.items.slice(range.start, range.end));\n            this.scroll.emit({ start: range.start, end: range.end });\n        });\n        if (isDefined(scrollTop) && this._lastScrollPosition === 0) {\n            this._scrollablePanel.scrollTop = scrollTop;\n            this._lastScrollPosition = scrollTop;\n        }\n    }\n    _measureDimensions() {\n        if (this._panelService.dimensions.itemHeight > 0 || this.itemsLength === 0) {\n            return Promise.resolve(this._panelService.dimensions);\n        }\n        const [first] = this.items;\n        this.update.emit([first]);\n        return Promise.resolve().then(() => {\n            const option = this._dropdown.querySelector(`#${first.htmlId}`);\n            const optionHeight = option.clientHeight;\n            this._virtualPadding.style.height = `${optionHeight * this.itemsLength}px`;\n            const panelHeight = this._scrollablePanel.clientHeight;\n            this._panelService.setDimensions(optionHeight, panelHeight);\n            return this._panelService.dimensions;\n        });\n    }\n    _fireScrollToEnd(scrollTop) {\n        if (this._scrollToEndFired || scrollTop === 0) {\n            return;\n        }\n        const padding = this.virtualScroll ?\n            this._virtualPadding :\n            this._contentPanel;\n        if (scrollTop + this._dropdown.clientHeight >= padding.clientHeight - 1) {\n            this._zone.run(() => this.scrollToEnd.emit());\n            this._scrollToEndFired = true;\n        }\n    }\n    _calculateCurrentPosition(dropdownEl) {\n        if (this.position !== 'auto') {\n            return this.position;\n        }\n        const selectRect = this._select.getBoundingClientRect();\n        const scrollTop = document.documentElement.scrollTop || document.body.scrollTop;\n        const offsetTop = selectRect.top + window.pageYOffset;\n        const height = selectRect.height;\n        const dropdownHeight = dropdownEl.getBoundingClientRect().height;\n        if (offsetTop + height + dropdownHeight > scrollTop + document.documentElement.clientHeight) {\n            return 'top';\n        }\n        else {\n            return 'bottom';\n        }\n    }\n    _appendDropdown() {\n        if (!this.appendTo) {\n            return;\n        }\n        this._parent = document.querySelector(this.appendTo);\n        if (!this._parent) {\n            throw new Error(`appendTo selector ${this.appendTo} did not found any parent element`);\n        }\n        this._updateXPosition();\n        this._parent.appendChild(this._dropdown);\n    }\n    _updateXPosition() {\n        const select = this._select.getBoundingClientRect();\n        const parent = this._parent.getBoundingClientRect();\n        const offsetLeft = select.left - parent.left;\n        this._dropdown.style.left = offsetLeft + 'px';\n        this._dropdown.style.width = select.width + 'px';\n        this._dropdown.style.minWidth = select.width + 'px';\n    }\n    _updateYPosition() {\n        const select = this._select.getBoundingClientRect();\n        const parent = this._parent.getBoundingClientRect();\n        const delta = select.height;\n        if (this._currentPosition === 'top') {\n            const offsetBottom = parent.bottom - select.bottom;\n            this._dropdown.style.bottom = offsetBottom + delta + 'px';\n            this._dropdown.style.top = 'auto';\n        }\n        else if (this._currentPosition === 'bottom') {\n            const offsetTop = select.top - parent.top;\n            this._dropdown.style.top = offsetTop + delta + 'px';\n            this._dropdown.style.bottom = 'auto';\n        }\n    }\n    _setupMousedownListener() {\n        this._zone.runOutsideAngular(() => {\n            fromEvent(this._dropdown, 'mousedown')\n                .pipe(takeUntil(this._destroy$))\n                .subscribe((event) => {\n                const target = event.target;\n                if (target.tagName === 'INPUT') {\n                    return;\n                }\n                event.preventDefault();\n            });\n        });\n    }\n}\nNgDropdownPanelComponent.ɵfac = function NgDropdownPanelComponent_Factory(t) { return new (t || NgDropdownPanelComponent)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.Renderer2), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.NgZone), ɵngcc0.ɵɵdirectiveInject(NgDropdownPanelService), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ElementRef), ɵngcc0.ɵɵdirectiveInject(DOCUMENT, 8)); };\nNgDropdownPanelComponent.ɵcmp = /*@__PURE__*/ ɵngcc0.ɵɵdefineComponent({ type: NgDropdownPanelComponent, selectors: [[\"ng-dropdown-panel\"]], viewQuery: function NgDropdownPanelComponent_Query(rf, ctx) { if (rf & 1) {\n        ɵngcc0.ɵɵviewQuery(_c0, 7, ElementRef);\n        ɵngcc0.ɵɵviewQuery(_c1, 7, ElementRef);\n        ɵngcc0.ɵɵviewQuery(_c2, 7, ElementRef);\n    } if (rf & 2) {\n        let _t;\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.contentElementRef = _t.first);\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.scrollElementRef = _t.first);\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.paddingElementRef = _t.first);\n    } }, inputs: { items: \"items\", position: \"position\", virtualScroll: \"virtualScroll\", filterValue: \"filterValue\", markedItem: \"markedItem\", appendTo: \"appendTo\", bufferAmount: \"bufferAmount\", headerTemplate: \"headerTemplate\", footerTemplate: \"footerTemplate\" }, outputs: { update: \"update\", scroll: \"scroll\", scrollToEnd: \"scrollToEnd\", outsideClick: \"outsideClick\" }, features: [ɵngcc0.ɵɵNgOnChangesFeature], ngContentSelectors: _c4, decls: 9, vars: 6, consts: [[\"class\", \"ng-dropdown-header\", 4, \"ngIf\"], [1, \"ng-dropdown-panel-items\", \"scroll-host\"], [\"scroll\", \"\"], [\"padding\", \"\"], [\"content\", \"\"], [\"class\", \"ng-dropdown-footer\", 4, \"ngIf\"], [1, \"ng-dropdown-header\"], [3, \"ngTemplateOutlet\", \"ngTemplateOutletContext\"], [1, \"ng-dropdown-footer\"]], template: function NgDropdownPanelComponent_Template(rf, ctx) { if (rf & 1) {\n        ɵngcc0.ɵɵprojectionDef();\n        ɵngcc0.ɵɵtemplate(0, NgDropdownPanelComponent_div_0_Template, 2, 4, \"div\", 0);\n        ɵngcc0.ɵɵelementStart(1, \"div\", 1, 2);\n        ɵngcc0.ɵɵelement(3, \"div\", null, 3);\n        ɵngcc0.ɵɵelementStart(5, \"div\", null, 4);\n        ɵngcc0.ɵɵprojection(7);\n        ɵngcc0.ɵɵelementEnd()();\n        ɵngcc0.ɵɵtemplate(8, NgDropdownPanelComponent_div_8_Template, 2, 4, \"div\", 5);\n    } if (rf & 2) {\n        ɵngcc0.ɵɵproperty(\"ngIf\", ctx.headerTemplate);\n        ɵngcc0.ɵɵadvance(3);\n        ɵngcc0.ɵɵclassProp(\"total-padding\", ctx.virtualScroll);\n        ɵngcc0.ɵɵadvance(2);\n        ɵngcc0.ɵɵclassProp(\"scrollable-content\", ctx.virtualScroll && ctx.items.length);\n        ɵngcc0.ɵɵadvance(3);\n        ɵngcc0.ɵɵproperty(\"ngIf\", ctx.footerTemplate);\n    } }, dependencies: [ɵngcc1.NgIf, ɵngcc1.NgTemplateOutlet], encapsulation: 2, changeDetection: 0 });\nNgDropdownPanelComponent.ctorParameters = () => [\n    { type: Renderer2 },\n    { type: NgZone },\n    { type: NgDropdownPanelService },\n    { type: ElementRef },\n    { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [DOCUMENT,] }] }\n];\nNgDropdownPanelComponent.propDecorators = {\n    items: [{ type: Input }],\n    markedItem: [{ type: Input }],\n    position: [{ type: Input }],\n    appendTo: [{ type: Input }],\n    bufferAmount: [{ type: Input }],\n    virtualScroll: [{ type: Input }],\n    headerTemplate: [{ type: Input }],\n    footerTemplate: [{ type: Input }],\n    filterValue: [{ type: Input }],\n    update: [{ type: Output }],\n    scroll: [{ type: Output }],\n    scrollToEnd: [{ type: Output }],\n    outsideClick: [{ type: Output }],\n    contentElementRef: [{ type: ViewChild, args: ['content', { read: ElementRef, static: true },] }],\n    scrollElementRef: [{ type: ViewChild, args: ['scroll', { read: ElementRef, static: true },] }],\n    paddingElementRef: [{ type: ViewChild, args: ['padding', { read: ElementRef, static: true },] }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(NgDropdownPanelComponent, [{\n        type: Component,\n        args: [{\n                changeDetection: ChangeDetectionStrategy.OnPush,\n                encapsulation: ViewEncapsulation.None,\n                selector: 'ng-dropdown-panel',\n                template: `\n        <div *ngIf=\"headerTemplate\" class=\"ng-dropdown-header\">\n            <ng-container [ngTemplateOutlet]=\"headerTemplate\" [ngTemplateOutletContext]=\"{ searchTerm: filterValue }\"></ng-container>\n        </div>\n        <div #scroll class=\"ng-dropdown-panel-items scroll-host\">\n            <div #padding [class.total-padding]=\"virtualScroll\"></div>\n            <div #content [class.scrollable-content]=\"virtualScroll && items.length\">\n                <ng-content></ng-content>\n            </div>\n        </div>\n        <div *ngIf=\"footerTemplate\" class=\"ng-dropdown-footer\">\n            <ng-container [ngTemplateOutlet]=\"footerTemplate\" [ngTemplateOutletContext]=\"{ searchTerm: filterValue }\"></ng-container>\n        </div>\n    `\n            }]\n    }], function () { return [{ type: ɵngcc0.Renderer2 }, { type: ɵngcc0.NgZone }, { type: NgDropdownPanelService }, { type: ɵngcc0.ElementRef }, { type: undefined, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [DOCUMENT]\n            }] }]; }, { items: [{\n            type: Input\n        }], position: [{\n            type: Input\n        }], virtualScroll: [{\n            type: Input\n        }], filterValue: [{\n            type: Input\n        }], update: [{\n            type: Output\n        }], scroll: [{\n            type: Output\n        }], scrollToEnd: [{\n            type: Output\n        }], outsideClick: [{\n            type: Output\n        }], markedItem: [{\n            type: Input\n        }], appendTo: [{\n            type: Input\n        }], bufferAmount: [{\n            type: Input\n        }], headerTemplate: [{\n            type: Input\n        }], footerTemplate: [{\n            type: Input\n        }], contentElementRef: [{\n            type: ViewChild,\n            args: ['content', { read: ElementRef, static: true }]\n        }], scrollElementRef: [{\n            type: ViewChild,\n            args: ['scroll', { read: ElementRef, static: true }]\n        }], paddingElementRef: [{\n            type: ViewChild,\n            args: ['padding', { read: ElementRef, static: true }]\n        }] }); })();\n\nclass NgOptionComponent {\n    constructor(elementRef) {\n        this.elementRef = elementRef;\n        this.stateChange$ = new Subject();\n        this._disabled = false;\n    }\n    get disabled() { return this._disabled; }\n    set disabled(value) { this._disabled = this._isDisabled(value); }\n    get label() {\n        return (this.elementRef.nativeElement.textContent || '').trim();\n    }\n    ngOnChanges(changes) {\n        if (changes.disabled) {\n            this.stateChange$.next({\n                value: this.value,\n                disabled: this._disabled\n            });\n        }\n    }\n    ngAfterViewChecked() {\n        if (this.label !== this._previousLabel) {\n            this._previousLabel = this.label;\n            this.stateChange$.next({\n                value: this.value,\n                disabled: this._disabled,\n                label: this.elementRef.nativeElement.innerHTML\n            });\n        }\n    }\n    ngOnDestroy() {\n        this.stateChange$.complete();\n    }\n    _isDisabled(value) {\n        return value != null && `${value}` !== 'false';\n    }\n}\nNgOptionComponent.ɵfac = function NgOptionComponent_Factory(t) { return new (t || NgOptionComponent)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ElementRef)); };\nNgOptionComponent.ɵcmp = /*@__PURE__*/ ɵngcc0.ɵɵdefineComponent({ type: NgOptionComponent, selectors: [[\"ng-option\"]], inputs: { disabled: \"disabled\", value: \"value\" }, features: [ɵngcc0.ɵɵNgOnChangesFeature], ngContentSelectors: _c4, decls: 1, vars: 0, template: function NgOptionComponent_Template(rf, ctx) { if (rf & 1) {\n        ɵngcc0.ɵɵprojectionDef();\n        ɵngcc0.ɵɵprojection(0);\n    } }, encapsulation: 2, changeDetection: 0 });\nNgOptionComponent.ctorParameters = () => [\n    { type: ElementRef }\n];\nNgOptionComponent.propDecorators = {\n    value: [{ type: Input }],\n    disabled: [{ type: Input }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(NgOptionComponent, [{\n        type: Component,\n        args: [{\n                selector: 'ng-option',\n                changeDetection: ChangeDetectionStrategy.OnPush,\n                template: `<ng-content></ng-content>`\n            }]\n    }], function () { return [{ type: ɵngcc0.ElementRef }]; }, { disabled: [{\n            type: Input\n        }], value: [{\n            type: Input\n        }] }); })();\n\nclass NgSelectConfig {\n    constructor() {\n        this.notFoundText = 'No items found';\n        this.typeToSearchText = 'Type to search';\n        this.addTagText = 'Add item';\n        this.loadingText = 'Loading...';\n        this.clearAllText = 'Clear all';\n        this.disableVirtualScroll = true;\n        this.openOnEnter = true;\n        this.appearance = 'underline';\n    }\n}\nNgSelectConfig.ɵfac = function NgSelectConfig_Factory(t) { return new (t || NgSelectConfig)(); };\nNgSelectConfig.ɵprov = i0.ɵɵdefineInjectable({ factory: function NgSelectConfig_Factory() { return new NgSelectConfig(); }, token: NgSelectConfig, providedIn: \"root\" });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(NgSelectConfig, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return []; }, null); })();\n\nconst SELECTION_MODEL_FACTORY = new InjectionToken('ng-select-selection-model');\nclass NgSelectComponent {\n    constructor(classes, autoFocus, config, newSelectionModel, _elementRef, _cd, _console) {\n        this.classes = classes;\n        this.autoFocus = autoFocus;\n        this.config = config;\n        this._cd = _cd;\n        this._console = _console;\n        this.markFirst = true;\n        this.dropdownPosition = 'auto';\n        this.loading = false;\n        this.closeOnSelect = true;\n        this.hideSelected = false;\n        this.selectOnTab = false;\n        this.bufferAmount = 4;\n        this.selectableGroup = false;\n        this.selectableGroupAsModel = true;\n        this.searchFn = null;\n        this.trackByFn = null;\n        this.clearOnBackspace = true;\n        this.labelForId = null;\n        this.inputAttrs = {};\n        this.readonly = false;\n        this.searchWhileComposing = true;\n        this.minTermLength = 0;\n        this.editableSearchTerm = false;\n        this.keyDownFn = (_) => true;\n        this.multiple = false;\n        this.addTag = false;\n        this.searchable = true;\n        this.clearable = true;\n        this.isOpen = false;\n        // output events\n        this.blurEvent = new EventEmitter();\n        this.focusEvent = new EventEmitter();\n        this.changeEvent = new EventEmitter();\n        this.openEvent = new EventEmitter();\n        this.closeEvent = new EventEmitter();\n        this.searchEvent = new EventEmitter();\n        this.clearEvent = new EventEmitter();\n        this.addEvent = new EventEmitter();\n        this.removeEvent = new EventEmitter();\n        this.scroll = new EventEmitter();\n        this.scrollToEnd = new EventEmitter();\n        this.viewPortItems = [];\n        this.searchTerm = null;\n        this.dropdownId = newId();\n        this.escapeHTML = true;\n        this.useDefaultClass = true;\n        this._items = [];\n        this._defaultLabel = 'label';\n        this._pressedKeys = [];\n        this._isComposing = false;\n        this._destroy$ = new Subject();\n        this._keyPress$ = new Subject();\n        this._onChange = (_) => { };\n        this._onTouched = () => { };\n        this.clearItem = (item) => {\n            const option = this.selectedItems.find(x => x.value === item);\n            this.unselect(option);\n        };\n        this.trackByOption = (_, item) => {\n            if (this.trackByFn) {\n                return this.trackByFn(item.value);\n            }\n            return item;\n        };\n        this._mergeGlobalConfig(config);\n        this.itemsList = new ItemsList(this, newSelectionModel());\n        this.element = _elementRef.nativeElement;\n    }\n    get items() { return this._items; }\n    ;\n    set items(value) {\n        if (value === null) {\n            value = [];\n        }\n        this._itemsAreUsed = true;\n        this._items = value;\n    }\n    ;\n    get compareWith() { return this._compareWith; }\n    set compareWith(fn) {\n        if (fn !== undefined && fn !== null && !isFunction(fn)) {\n            throw Error('`compareWith` must be a function.');\n        }\n        this._compareWith = fn;\n    }\n    get clearSearchOnAdd() {\n        if (isDefined(this._clearSearchOnAdd)) {\n            return this._clearSearchOnAdd;\n        }\n        else if (isDefined(this.config.clearSearchOnAdd)) {\n            return this.config.clearSearchOnAdd;\n        }\n        return this.closeOnSelect;\n    }\n    ;\n    set clearSearchOnAdd(value) {\n        this._clearSearchOnAdd = value;\n    }\n    ;\n    get disabled() { return this.readonly || this._disabled; }\n    ;\n    get filtered() { return (!!this.searchTerm && this.searchable || this._isComposing); }\n    ;\n    get _editableSearchTerm() {\n        return this.editableSearchTerm && !this.multiple;\n    }\n    get selectedItems() {\n        return this.itemsList.selectedItems;\n    }\n    get selectedValues() {\n        return this.selectedItems.map(x => x.value);\n    }\n    get hasValue() {\n        return this.selectedItems.length > 0;\n    }\n    get currentPanelPosition() {\n        if (this.dropdownPanel) {\n            return this.dropdownPanel.currentPosition;\n        }\n        return undefined;\n    }\n    ngOnInit() {\n        this._handleKeyPresses();\n        this._setInputAttributes();\n    }\n    ngOnChanges(changes) {\n        if (changes.multiple) {\n            this.itemsList.clearSelected();\n        }\n        if (changes.items) {\n            this._setItems(changes.items.currentValue || []);\n        }\n        if (changes.isOpen) {\n            this._manualOpen = isDefined(changes.isOpen.currentValue);\n        }\n    }\n    ngAfterViewInit() {\n        if (!this._itemsAreUsed) {\n            this.escapeHTML = false;\n            this._setItemsFromNgOptions();\n        }\n        if (isDefined(this.autoFocus)) {\n            this.focus();\n        }\n    }\n    ngOnDestroy() {\n        this._destroy$.next();\n        this._destroy$.complete();\n    }\n    handleKeyDown($event) {\n        const keyCode = KeyCode[$event.which];\n        if (keyCode) {\n            if (this.keyDownFn($event) === false) {\n                return;\n            }\n            this.handleKeyCode($event);\n        }\n        else if ($event.key && $event.key.length === 1) {\n            this._keyPress$.next($event.key.toLocaleLowerCase());\n        }\n    }\n    handleKeyCode($event) {\n        switch ($event.which) {\n            case KeyCode.ArrowDown:\n                this._handleArrowDown($event);\n                break;\n            case KeyCode.ArrowUp:\n                this._handleArrowUp($event);\n                break;\n            case KeyCode.Space:\n                this._handleSpace($event);\n                break;\n            case KeyCode.Enter:\n                this._handleEnter($event);\n                break;\n            case KeyCode.Tab:\n                this._handleTab($event);\n                break;\n            case KeyCode.Esc:\n                this.close();\n                $event.preventDefault();\n                break;\n            case KeyCode.Backspace:\n                this._handleBackspace();\n                break;\n        }\n    }\n    handleMousedown($event) {\n        const target = $event.target;\n        if (target.tagName !== 'INPUT') {\n            $event.preventDefault();\n        }\n        if (target.classList.contains('ng-clear-wrapper')) {\n            this.handleClearClick();\n            return;\n        }\n        if (target.classList.contains('ng-arrow-wrapper')) {\n            this.handleArrowClick();\n            return;\n        }\n        if (target.classList.contains('ng-value-icon')) {\n            return;\n        }\n        if (!this.focused) {\n            this.focus();\n        }\n        if (this.searchable) {\n            this.open();\n        }\n        else {\n            this.toggle();\n        }\n    }\n    handleArrowClick() {\n        if (this.isOpen) {\n            this.close();\n        }\n        else {\n            this.open();\n        }\n    }\n    handleClearClick() {\n        if (this.hasValue) {\n            this.itemsList.clearSelected(true);\n            this._updateNgModel();\n        }\n        this._clearSearch();\n        this.focus();\n        this.clearEvent.emit();\n        this._onSelectionChanged();\n    }\n    clearModel() {\n        if (!this.clearable) {\n            return;\n        }\n        this.itemsList.clearSelected();\n        this._updateNgModel();\n    }\n    writeValue(value) {\n        this.itemsList.clearSelected();\n        this._handleWriteValue(value);\n        this._cd.markForCheck();\n    }\n    registerOnChange(fn) {\n        this._onChange = fn;\n    }\n    registerOnTouched(fn) {\n        this._onTouched = fn;\n    }\n    setDisabledState(state) {\n        this._disabled = state;\n        this._cd.markForCheck();\n    }\n    toggle() {\n        if (!this.isOpen) {\n            this.open();\n        }\n        else {\n            this.close();\n        }\n    }\n    open() {\n        if (this.disabled || this.isOpen || this.itemsList.maxItemsSelected || this._manualOpen) {\n            return;\n        }\n        if (!this._isTypeahead && !this.addTag && this.itemsList.noItemsToSelect) {\n            return;\n        }\n        this.isOpen = true;\n        this.itemsList.markSelectedOrDefault(this.markFirst);\n        this.openEvent.emit();\n        if (!this.searchTerm) {\n            this.focus();\n        }\n        this.detectChanges();\n    }\n    close() {\n        if (!this.isOpen || this._manualOpen) {\n            return;\n        }\n        this.isOpen = false;\n        this._isComposing = false;\n        if (!this._editableSearchTerm) {\n            this._clearSearch();\n        }\n        else {\n            this.itemsList.resetFilteredItems();\n        }\n        this.itemsList.unmarkItem();\n        this._onTouched();\n        this.closeEvent.emit();\n        this._cd.markForCheck();\n    }\n    toggleItem(item) {\n        if (!item || item.disabled || this.disabled) {\n            return;\n        }\n        if (this.multiple && item.selected) {\n            this.unselect(item);\n        }\n        else {\n            this.select(item);\n        }\n        if (this._editableSearchTerm) {\n            this._setSearchTermFromItems();\n        }\n        this._onSelectionChanged();\n    }\n    select(item) {\n        if (!item.selected) {\n            this.itemsList.select(item);\n            if (this.clearSearchOnAdd && !this._editableSearchTerm) {\n                this._clearSearch();\n            }\n            this._updateNgModel();\n            if (this.multiple) {\n                this.addEvent.emit(item.value);\n            }\n        }\n        if (this.closeOnSelect || this.itemsList.noItemsToSelect) {\n            this.close();\n        }\n    }\n    focus() {\n        this.searchInput.nativeElement.focus();\n    }\n    blur() {\n        this.searchInput.nativeElement.blur();\n    }\n    unselect(item) {\n        if (!item) {\n            return;\n        }\n        this.itemsList.unselect(item);\n        this.focus();\n        this._updateNgModel();\n        this.removeEvent.emit(item);\n    }\n    selectTag() {\n        let tag;\n        if (isFunction(this.addTag)) {\n            tag = this.addTag(this.searchTerm);\n        }\n        else {\n            tag = this._primitive ? this.searchTerm : { [this.bindLabel]: this.searchTerm };\n        }\n        const handleTag = (item) => this._isTypeahead || !this.isOpen ? this.itemsList.mapItem(item, null) : this.itemsList.addItem(item);\n        if (isPromise(tag)) {\n            tag.then(item => this.select(handleTag(item))).catch(() => { });\n        }\n        else if (tag) {\n            this.select(handleTag(tag));\n        }\n    }\n    showClear() {\n        return this.clearable && (this.hasValue || this.searchTerm) && !this.disabled;\n    }\n    get showAddTag() {\n        if (!this._validTerm) {\n            return false;\n        }\n        const term = this.searchTerm.toLowerCase().trim();\n        return this.addTag &&\n            (!this.itemsList.filteredItems.some(x => x.label.toLowerCase() === term) &&\n                (!this.hideSelected && this.isOpen || !this.selectedItems.some(x => x.label.toLowerCase() === term))) &&\n            !this.loading;\n    }\n    showNoItemsFound() {\n        const empty = this.itemsList.filteredItems.length === 0;\n        return ((empty && !this._isTypeahead && !this.loading) ||\n            (empty && this._isTypeahead && this._validTerm && !this.loading)) &&\n            !this.showAddTag;\n    }\n    showTypeToSearch() {\n        const empty = this.itemsList.filteredItems.length === 0;\n        return empty && this._isTypeahead && !this._validTerm && !this.loading;\n    }\n    onCompositionStart() {\n        this._isComposing = true;\n    }\n    onCompositionEnd(term) {\n        this._isComposing = false;\n        if (this.searchWhileComposing) {\n            return;\n        }\n        this.filter(term);\n    }\n    filter(term) {\n        if (this._isComposing && !this.searchWhileComposing) {\n            return;\n        }\n        this.searchTerm = term;\n        if (this._isTypeahead && (this._validTerm || this.minTermLength === 0)) {\n            this.typeahead.next(term);\n        }\n        if (!this._isTypeahead) {\n            this.itemsList.filter(this.searchTerm);\n            if (this.isOpen) {\n                this.itemsList.markSelectedOrDefault(this.markFirst);\n            }\n        }\n        this.searchEvent.emit({ term, items: this.itemsList.filteredItems.map(x => x.value) });\n        this.open();\n    }\n    onInputFocus($event) {\n        if (this.focused) {\n            return;\n        }\n        if (this._editableSearchTerm) {\n            this._setSearchTermFromItems();\n        }\n        this.element.classList.add('ng-select-focused');\n        this.focusEvent.emit($event);\n        this.focused = true;\n    }\n    onInputBlur($event) {\n        this.element.classList.remove('ng-select-focused');\n        this.blurEvent.emit($event);\n        if (!this.isOpen && !this.disabled) {\n            this._onTouched();\n        }\n        if (this._editableSearchTerm) {\n            this._setSearchTermFromItems();\n        }\n        this.focused = false;\n    }\n    onItemHover(item) {\n        if (item.disabled) {\n            return;\n        }\n        this.itemsList.markItem(item);\n    }\n    detectChanges() {\n        if (!this._cd.destroyed) {\n            this._cd.detectChanges();\n        }\n    }\n    _setSearchTermFromItems() {\n        const selected = this.selectedItems && this.selectedItems[0];\n        this.searchTerm = (selected && selected.label) || null;\n    }\n    _setItems(items) {\n        const firstItem = items[0];\n        this.bindLabel = this.bindLabel || this._defaultLabel;\n        this._primitive = isDefined(firstItem) ? !isObject(firstItem) : this._primitive || this.bindLabel === this._defaultLabel;\n        this.itemsList.setItems(items);\n        if (items.length > 0 && this.hasValue) {\n            this.itemsList.mapSelectedItems();\n        }\n        if (this.isOpen && isDefined(this.searchTerm) && !this._isTypeahead) {\n            this.itemsList.filter(this.searchTerm);\n        }\n        if (this._isTypeahead || this.isOpen) {\n            this.itemsList.markSelectedOrDefault(this.markFirst);\n        }\n    }\n    _setItemsFromNgOptions() {\n        const mapNgOptions = (options) => {\n            this.items = options.map(option => ({\n                $ngOptionValue: option.value,\n                $ngOptionLabel: option.elementRef.nativeElement.innerHTML,\n                disabled: option.disabled\n            }));\n            this.itemsList.setItems(this.items);\n            if (this.hasValue) {\n                this.itemsList.mapSelectedItems();\n            }\n            this.detectChanges();\n        };\n        const handleOptionChange = () => {\n            const changedOrDestroyed = merge(this.ngOptions.changes, this._destroy$);\n            merge(...this.ngOptions.map(option => option.stateChange$))\n                .pipe(takeUntil(changedOrDestroyed))\n                .subscribe(option => {\n                const item = this.itemsList.findItem(option.value);\n                item.disabled = option.disabled;\n                item.label = option.label || item.label;\n                this._cd.detectChanges();\n            });\n        };\n        this.ngOptions.changes\n            .pipe(startWith(this.ngOptions), takeUntil(this._destroy$))\n            .subscribe(options => {\n            this.bindLabel = this._defaultLabel;\n            mapNgOptions(options);\n            handleOptionChange();\n        });\n    }\n    _isValidWriteValue(value) {\n        if (!isDefined(value) || (this.multiple && value === '') || Array.isArray(value) && value.length === 0) {\n            return false;\n        }\n        const validateBinding = (item) => {\n            if (!isDefined(this.compareWith) && isObject(item) && this.bindValue) {\n                this._console.warn(`Setting object(${JSON.stringify(item)}) as your model with bindValue is not allowed unless [compareWith] is used.`);\n                return false;\n            }\n            return true;\n        };\n        if (this.multiple) {\n            if (!Array.isArray(value)) {\n                this._console.warn('Multiple select ngModel should be array.');\n                return false;\n            }\n            return value.every(item => validateBinding(item));\n        }\n        else {\n            return validateBinding(value);\n        }\n    }\n    _handleWriteValue(ngModel) {\n        if (!this._isValidWriteValue(ngModel)) {\n            return;\n        }\n        const select = (val) => {\n            let item = this.itemsList.findItem(val);\n            if (item) {\n                this.itemsList.select(item);\n            }\n            else {\n                const isValObject = isObject(val);\n                const isPrimitive = !isValObject && !this.bindValue;\n                if ((isValObject || isPrimitive)) {\n                    this.itemsList.select(this.itemsList.mapItem(val, null));\n                }\n                else if (this.bindValue) {\n                    item = {\n                        [this.bindLabel]: null,\n                        [this.bindValue]: val\n                    };\n                    this.itemsList.select(this.itemsList.mapItem(item, null));\n                }\n            }\n        };\n        if (this.multiple) {\n            ngModel.forEach(item => select(item));\n        }\n        else {\n            select(ngModel);\n        }\n    }\n    _handleKeyPresses() {\n        if (this.searchable) {\n            return;\n        }\n        this._keyPress$\n            .pipe(takeUntil(this._destroy$), tap(letter => this._pressedKeys.push(letter)), debounceTime(200), filter(() => this._pressedKeys.length > 0), map(() => this._pressedKeys.join('')))\n            .subscribe(term => {\n            const item = this.itemsList.findByLabel(term);\n            if (item) {\n                if (this.isOpen) {\n                    this.itemsList.markItem(item);\n                    this._scrollToMarked();\n                    this._cd.markForCheck();\n                }\n                else {\n                    this.select(item);\n                }\n            }\n            this._pressedKeys = [];\n        });\n    }\n    _setInputAttributes() {\n        const input = this.searchInput.nativeElement;\n        const attributes = Object.assign({ type: 'text', autocorrect: 'off', autocapitalize: 'off', autocomplete: this.labelForId ? 'off' : this.dropdownId }, this.inputAttrs);\n        for (const key of Object.keys(attributes)) {\n            input.setAttribute(key, attributes[key]);\n        }\n    }\n    _updateNgModel() {\n        const model = [];\n        for (const item of this.selectedItems) {\n            if (this.bindValue) {\n                let value = null;\n                if (item.children) {\n                    const groupKey = this.groupValue ? this.bindValue : this.groupBy;\n                    value = item.value[groupKey || this.groupBy];\n                }\n                else {\n                    value = this.itemsList.resolveNested(item.value, this.bindValue);\n                }\n                model.push(value);\n            }\n            else {\n                model.push(item.value);\n            }\n        }\n        const selected = this.selectedItems.map(x => x.value);\n        if (this.multiple) {\n            this._onChange(model);\n            this.changeEvent.emit(selected);\n        }\n        else {\n            this._onChange(isDefined(model[0]) ? model[0] : null);\n            this.changeEvent.emit(selected[0]);\n        }\n        this._cd.markForCheck();\n    }\n    _clearSearch() {\n        if (!this.searchTerm) {\n            return;\n        }\n        this._changeSearch(null);\n        this.itemsList.resetFilteredItems();\n    }\n    _changeSearch(searchTerm) {\n        this.searchTerm = searchTerm;\n        if (this._isTypeahead) {\n            this.typeahead.next(searchTerm);\n        }\n    }\n    _scrollToMarked() {\n        if (!this.isOpen || !this.dropdownPanel) {\n            return;\n        }\n        this.dropdownPanel.scrollTo(this.itemsList.markedItem);\n    }\n    _scrollToTag() {\n        if (!this.isOpen || !this.dropdownPanel) {\n            return;\n        }\n        this.dropdownPanel.scrollToTag();\n    }\n    _onSelectionChanged() {\n        if (this.isOpen && this.multiple && this.appendTo) {\n            // Make sure items are rendered.\n            this._cd.detectChanges();\n            this.dropdownPanel.adjustPosition();\n        }\n    }\n    _handleTab($event) {\n        if (this.isOpen === false && !this.addTag) {\n            return;\n        }\n        if (this.selectOnTab) {\n            if (this.itemsList.markedItem) {\n                this.toggleItem(this.itemsList.markedItem);\n                $event.preventDefault();\n            }\n            else if (this.showAddTag) {\n                this.selectTag();\n                $event.preventDefault();\n            }\n            else {\n                this.close();\n            }\n        }\n        else {\n            this.close();\n        }\n    }\n    _handleEnter($event) {\n        if (this.isOpen || this._manualOpen) {\n            if (this.itemsList.markedItem) {\n                this.toggleItem(this.itemsList.markedItem);\n            }\n            else if (this.showAddTag) {\n                this.selectTag();\n            }\n        }\n        else if (this.openOnEnter) {\n            this.open();\n        }\n        else {\n            return;\n        }\n        $event.preventDefault();\n    }\n    _handleSpace($event) {\n        if (this.isOpen || this._manualOpen) {\n            return;\n        }\n        this.open();\n        $event.preventDefault();\n    }\n    _handleArrowDown($event) {\n        if (this._nextItemIsTag(+1)) {\n            this.itemsList.unmarkItem();\n            this._scrollToTag();\n        }\n        else {\n            this.itemsList.markNextItem();\n            this._scrollToMarked();\n        }\n        this.open();\n        $event.preventDefault();\n    }\n    _handleArrowUp($event) {\n        if (!this.isOpen) {\n            return;\n        }\n        if (this._nextItemIsTag(-1)) {\n            this.itemsList.unmarkItem();\n            this._scrollToTag();\n        }\n        else {\n            this.itemsList.markPreviousItem();\n            this._scrollToMarked();\n        }\n        $event.preventDefault();\n    }\n    _nextItemIsTag(nextStep) {\n        const nextIndex = this.itemsList.markedIndex + nextStep;\n        return this.addTag && this.searchTerm\n            && this.itemsList.markedItem\n            && (nextIndex < 0 || nextIndex === this.itemsList.filteredItems.length);\n    }\n    _handleBackspace() {\n        if (this.searchTerm || !this.clearable || !this.clearOnBackspace || !this.hasValue) {\n            return;\n        }\n        if (this.multiple) {\n            this.unselect(this.itemsList.lastSelectedItem);\n        }\n        else {\n            this.clearModel();\n        }\n    }\n    get _isTypeahead() {\n        return this.typeahead && this.typeahead.observers.length > 0;\n    }\n    get _validTerm() {\n        const term = this.searchTerm && this.searchTerm.trim();\n        return term && term.length >= this.minTermLength;\n    }\n    _mergeGlobalConfig(config) {\n        this.placeholder = this.placeholder || config.placeholder;\n        this.notFoundText = this.notFoundText || config.notFoundText;\n        this.typeToSearchText = this.typeToSearchText || config.typeToSearchText;\n        this.addTagText = this.addTagText || config.addTagText;\n        this.loadingText = this.loadingText || config.loadingText;\n        this.clearAllText = this.clearAllText || config.clearAllText;\n        this.virtualScroll = isDefined(this.virtualScroll)\n            ? this.virtualScroll\n            : isDefined(config.disableVirtualScroll) ? !config.disableVirtualScroll : false;\n        this.openOnEnter = isDefined(this.openOnEnter) ? this.openOnEnter : config.openOnEnter;\n        this.appendTo = this.appendTo || config.appendTo;\n        this.bindValue = this.bindValue || config.bindValue;\n        this.bindLabel = this.bindLabel || config.bindLabel;\n        this.appearance = this.appearance || config.appearance;\n    }\n}\nNgSelectComponent.ɵfac = function NgSelectComponent_Factory(t) { return new (t || NgSelectComponent)(ɵngcc0.ɵɵinjectAttribute('class'), ɵngcc0.ɵɵinjectAttribute('autofocus'), ɵngcc0.ɵɵdirectiveInject(NgSelectConfig), ɵngcc0.ɵɵdirectiveInject(SELECTION_MODEL_FACTORY), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ElementRef), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ChangeDetectorRef), ɵngcc0.ɵɵdirectiveInject(ConsoleService)); };\nNgSelectComponent.ɵcmp = /*@__PURE__*/ ɵngcc0.ɵɵdefineComponent({ type: NgSelectComponent, selectors: [[\"ng-select\"]], contentQueries: function NgSelectComponent_ContentQueries(rf, ctx, dirIndex) { if (rf & 1) {\n        ɵngcc0.ɵɵcontentQuery(dirIndex, NgOptionTemplateDirective, 5, TemplateRef);\n        ɵngcc0.ɵɵcontentQuery(dirIndex, NgOptgroupTemplateDirective, 5, TemplateRef);\n        ɵngcc0.ɵɵcontentQuery(dirIndex, NgLabelTemplateDirective, 5, TemplateRef);\n        ɵngcc0.ɵɵcontentQuery(dirIndex, NgMultiLabelTemplateDirective, 5, TemplateRef);\n        ɵngcc0.ɵɵcontentQuery(dirIndex, NgHeaderTemplateDirective, 5, TemplateRef);\n        ɵngcc0.ɵɵcontentQuery(dirIndex, NgFooterTemplateDirective, 5, TemplateRef);\n        ɵngcc0.ɵɵcontentQuery(dirIndex, NgNotFoundTemplateDirective, 5, TemplateRef);\n        ɵngcc0.ɵɵcontentQuery(dirIndex, NgTypeToSearchTemplateDirective, 5, TemplateRef);\n        ɵngcc0.ɵɵcontentQuery(dirIndex, NgLoadingTextTemplateDirective, 5, TemplateRef);\n        ɵngcc0.ɵɵcontentQuery(dirIndex, NgTagTemplateDirective, 5, TemplateRef);\n        ɵngcc0.ɵɵcontentQuery(dirIndex, NgLoadingSpinnerTemplateDirective, 5, TemplateRef);\n        ɵngcc0.ɵɵcontentQuery(dirIndex, NgOptionComponent, 5);\n    } if (rf & 2) {\n        let _t;\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.optionTemplate = _t.first);\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.optgroupTemplate = _t.first);\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.labelTemplate = _t.first);\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.multiLabelTemplate = _t.first);\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.headerTemplate = _t.first);\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.footerTemplate = _t.first);\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.notFoundTemplate = _t.first);\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.typeToSearchTemplate = _t.first);\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.loadingTextTemplate = _t.first);\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.tagTemplate = _t.first);\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.loadingSpinnerTemplate = _t.first);\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.ngOptions = _t);\n    } }, viewQuery: function NgSelectComponent_Query(rf, ctx) { if (rf & 1) {\n        ɵngcc0.ɵɵviewQuery(NgDropdownPanelComponent, 5);\n        ɵngcc0.ɵɵviewQuery(_c5, 7);\n    } if (rf & 2) {\n        let _t;\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.dropdownPanel = _t.first);\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx.searchInput = _t.first);\n    } }, hostVars: 20, hostBindings: function NgSelectComponent_HostBindings(rf, ctx) { if (rf & 1) {\n        ɵngcc0.ɵɵlistener(\"keydown\", function NgSelectComponent_keydown_HostBindingHandler($event) { return ctx.handleKeyDown($event); });\n    } if (rf & 2) {\n        ɵngcc0.ɵɵclassProp(\"ng-select\", ctx.useDefaultClass)(\"ng-select-single\", !ctx.multiple)(\"ng-select-multiple\", ctx.multiple)(\"ng-select-taggable\", ctx.addTag)(\"ng-select-searchable\", ctx.searchable)(\"ng-select-clearable\", ctx.clearable)(\"ng-select-opened\", ctx.isOpen)(\"ng-select-disabled\", ctx.disabled)(\"ng-select-filtered\", ctx.filtered)(\"ng-select-typeahead\", ctx.typeahead);\n    } }, inputs: { markFirst: \"markFirst\", dropdownPosition: \"dropdownPosition\", loading: \"loading\", closeOnSelect: \"closeOnSelect\", hideSelected: \"hideSelected\", selectOnTab: \"selectOnTab\", bufferAmount: \"bufferAmount\", selectableGroup: \"selectableGroup\", selectableGroupAsModel: \"selectableGroupAsModel\", searchFn: \"searchFn\", trackByFn: \"trackByFn\", clearOnBackspace: \"clearOnBackspace\", labelForId: \"labelForId\", inputAttrs: \"inputAttrs\", readonly: \"readonly\", searchWhileComposing: \"searchWhileComposing\", minTermLength: \"minTermLength\", editableSearchTerm: \"editableSearchTerm\", keyDownFn: \"keyDownFn\", multiple: \"multiple\", addTag: \"addTag\", searchable: \"searchable\", clearable: \"clearable\", isOpen: \"isOpen\", items: \"items\", compareWith: \"compareWith\", clearSearchOnAdd: \"clearSearchOnAdd\", bindLabel: \"bindLabel\", placeholder: \"placeholder\", notFoundText: \"notFoundText\", typeToSearchText: \"typeToSearchText\", addTagText: \"addTagText\", loadingText: \"loadingText\", clearAllText: \"clearAllText\", virtualScroll: \"virtualScroll\", openOnEnter: \"openOnEnter\", appendTo: \"appendTo\", bindValue: \"bindValue\", appearance: \"appearance\", maxSelectedItems: \"maxSelectedItems\", groupBy: \"groupBy\", groupValue: \"groupValue\", tabIndex: \"tabIndex\", typeahead: \"typeahead\" }, outputs: { blurEvent: \"blur\", focusEvent: \"focus\", changeEvent: \"change\", openEvent: \"open\", closeEvent: \"close\", searchEvent: \"search\", clearEvent: \"clear\", addEvent: \"add\", removeEvent: \"remove\", scroll: \"scroll\", scrollToEnd: \"scrollToEnd\" }, features: [ɵngcc0.ɵɵProvidersFeature([{\n                provide: NG_VALUE_ACCESSOR,\n                useExisting: forwardRef(() => NgSelectComponent),\n                multi: true\n            }, NgDropdownPanelService]), ɵngcc0.ɵɵNgOnChangesFeature], decls: 14, vars: 19, consts: [[1, \"ng-select-container\", 3, \"mousedown\"], [1, \"ng-value-container\"], [1, \"ng-placeholder\"], [4, \"ngIf\"], [\"role\", \"combobox\", \"aria-haspopup\", \"listbox\", 1, \"ng-input\"], [\"aria-autocomplete\", \"list\", 3, \"readOnly\", \"disabled\", \"value\", \"input\", \"compositionstart\", \"compositionend\", \"focus\", \"blur\", \"change\"], [\"searchInput\", \"\"], [\"class\", \"ng-clear-wrapper\", 3, \"title\", 4, \"ngIf\"], [1, \"ng-arrow-wrapper\"], [1, \"ng-arrow\"], [\"class\", \"ng-dropdown-panel\", \"role\", \"listbox\", \"aria-label\", \"Options list\", 3, \"virtualScroll\", \"bufferAmount\", \"appendTo\", \"position\", \"headerTemplate\", \"footerTemplate\", \"filterValue\", \"items\", \"markedItem\", \"ng-select-multiple\", \"ngClass\", \"id\", \"update\", \"scroll\", \"scrollToEnd\", \"outsideClick\", 4, \"ngIf\"], [\"class\", \"ng-value\", 3, \"ng-value-disabled\", 4, \"ngFor\", \"ngForOf\", \"ngForTrackBy\"], [1, \"ng-value\"], [\"defaultLabelTemplate\", \"\"], [3, \"ngTemplateOutlet\", \"ngTemplateOutletContext\"], [\"aria-hidden\", \"true\", 1, \"ng-value-icon\", \"left\", 3, \"click\"], [1, \"ng-value-label\", 3, \"ngItemLabel\", \"escape\"], [\"defaultLoadingSpinnerTemplate\", \"\"], [3, \"ngTemplateOutlet\"], [1, \"ng-spinner-loader\"], [1, \"ng-clear-wrapper\", 3, \"title\"], [\"aria-hidden\", \"true\", 1, \"ng-clear\"], [\"role\", \"listbox\", \"aria-label\", \"Options list\", 1, \"ng-dropdown-panel\", 3, \"virtualScroll\", \"bufferAmount\", \"appendTo\", \"position\", \"headerTemplate\", \"footerTemplate\", \"filterValue\", \"items\", \"markedItem\", \"ngClass\", \"id\", \"update\", \"scroll\", \"scrollToEnd\", \"outsideClick\"], [\"class\", \"ng-option\", 3, \"ng-option-disabled\", \"ng-option-selected\", \"ng-optgroup\", \"ng-option\", \"ng-option-child\", \"ng-option-marked\", \"click\", \"mouseover\", 4, \"ngFor\", \"ngForOf\", \"ngForTrackBy\"], [\"class\", \"ng-option\", \"role\", \"option\", 3, \"ng-option-marked\", \"mouseover\", \"click\", 4, \"ngIf\"], [1, \"ng-option\", 3, \"click\", \"mouseover\"], [\"defaultOptionTemplate\", \"\"], [1, \"ng-option-label\", 3, \"ngItemLabel\", \"escape\"], [\"role\", \"option\", 1, \"ng-option\", 3, \"mouseover\", \"click\"], [\"defaultTagTemplate\", \"\"], [1, \"ng-tag-label\"], [\"defaultNotFoundTemplate\", \"\"], [1, \"ng-option\", \"ng-option-disabled\"], [\"defaultTypeToSearchTemplate\", \"\"], [\"defaultLoadingTextTemplate\", \"\"]], template: function NgSelectComponent_Template(rf, ctx) { if (rf & 1) {\n        const _r52 = ɵngcc0.ɵɵgetCurrentView();\n        ɵngcc0.ɵɵelementStart(0, \"div\", 0);\n        ɵngcc0.ɵɵlistener(\"mousedown\", function NgSelectComponent_Template_div_mousedown_0_listener($event) { return ctx.handleMousedown($event); });\n        ɵngcc0.ɵɵelementStart(1, \"div\", 1)(2, \"div\", 2);\n        ɵngcc0.ɵɵtext(3);\n        ɵngcc0.ɵɵelementEnd();\n        ɵngcc0.ɵɵtemplate(4, NgSelectComponent_ng_container_4_Template, 2, 2, \"ng-container\", 3);\n        ɵngcc0.ɵɵtemplate(5, NgSelectComponent_5_Template, 1, 5, null, 3);\n        ɵngcc0.ɵɵelementStart(6, \"div\", 4)(7, \"input\", 5, 6);\n        ɵngcc0.ɵɵlistener(\"input\", function NgSelectComponent_Template_input_input_7_listener() { ɵngcc0.ɵɵrestoreView(_r52); const _r2 = ɵngcc0.ɵɵreference(8); return ɵngcc0.ɵɵresetView(ctx.filter(_r2.value)); })(\"compositionstart\", function NgSelectComponent_Template_input_compositionstart_7_listener() { return ctx.onCompositionStart(); })(\"compositionend\", function NgSelectComponent_Template_input_compositionend_7_listener() { ɵngcc0.ɵɵrestoreView(_r52); const _r2 = ɵngcc0.ɵɵreference(8); return ɵngcc0.ɵɵresetView(ctx.onCompositionEnd(_r2.value)); })(\"focus\", function NgSelectComponent_Template_input_focus_7_listener($event) { return ctx.onInputFocus($event); })(\"blur\", function NgSelectComponent_Template_input_blur_7_listener($event) { return ctx.onInputBlur($event); })(\"change\", function NgSelectComponent_Template_input_change_7_listener($event) { return $event.stopPropagation(); });\n        ɵngcc0.ɵɵelementEnd()()();\n        ɵngcc0.ɵɵtemplate(9, NgSelectComponent_ng_container_9_Template, 4, 1, \"ng-container\", 3);\n        ɵngcc0.ɵɵtemplate(10, NgSelectComponent_span_10_Template, 3, 1, \"span\", 7);\n        ɵngcc0.ɵɵelementStart(11, \"span\", 8);\n        ɵngcc0.ɵɵelement(12, \"span\", 9);\n        ɵngcc0.ɵɵelementEnd()();\n        ɵngcc0.ɵɵtemplate(13, NgSelectComponent_ng_dropdown_panel_13_Template, 7, 19, \"ng-dropdown-panel\", 10);\n    } if (rf & 2) {\n        ɵngcc0.ɵɵclassProp(\"ng-appearance-outline\", ctx.appearance === \"outline\")(\"ng-has-value\", ctx.hasValue);\n        ɵngcc0.ɵɵadvance(3);\n        ɵngcc0.ɵɵtextInterpolate(ctx.placeholder);\n        ɵngcc0.ɵɵadvance(1);\n        ɵngcc0.ɵɵproperty(\"ngIf\", (!ctx.multiLabelTemplate || !ctx.multiple) && ctx.selectedItems.length > 0);\n        ɵngcc0.ɵɵadvance(1);\n        ɵngcc0.ɵɵproperty(\"ngIf\", ctx.multiple && ctx.multiLabelTemplate && ctx.selectedValues.length > 0);\n        ɵngcc0.ɵɵadvance(1);\n        ɵngcc0.ɵɵattribute(\"aria-expanded\", ctx.isOpen)(\"aria-owns\", ctx.isOpen ? ctx.dropdownId : null);\n        ɵngcc0.ɵɵadvance(1);\n        ɵngcc0.ɵɵproperty(\"readOnly\", !ctx.searchable || ctx.itemsList.maxItemsSelected)(\"disabled\", ctx.disabled)(\"value\", ctx.searchTerm ? ctx.searchTerm : \"\");\n        ɵngcc0.ɵɵattribute(\"id\", ctx.labelForId)(\"tabindex\", ctx.tabIndex)(\"aria-activedescendant\", ctx.isOpen ? ctx.itemsList == null ? null : ctx.itemsList.markedItem == null ? null : ctx.itemsList.markedItem.htmlId : null)(\"aria-controls\", ctx.isOpen ? ctx.dropdownId : null);\n        ɵngcc0.ɵɵadvance(2);\n        ɵngcc0.ɵɵproperty(\"ngIf\", ctx.loading);\n        ɵngcc0.ɵɵadvance(1);\n        ɵngcc0.ɵɵproperty(\"ngIf\", ctx.showClear());\n        ɵngcc0.ɵɵadvance(3);\n        ɵngcc0.ɵɵproperty(\"ngIf\", ctx.isOpen);\n    } }, dependencies: [ɵngcc1.NgClass, ɵngcc1.NgForOf, ɵngcc1.NgIf, ɵngcc1.NgTemplateOutlet, NgDropdownPanelComponent, NgItemLabelDirective], styles: [\".ng-select{position:relative;display:block;box-sizing:border-box}.ng-select div,.ng-select input,.ng-select span{box-sizing:border-box}.ng-select [hidden]{display:none}.ng-select.ng-select-searchable .ng-select-container .ng-value-container .ng-input{opacity:1}.ng-select.ng-select-opened .ng-select-container{z-index:1001}.ng-select.ng-select-disabled .ng-select-container .ng-value-container .ng-placeholder,.ng-select.ng-select-disabled .ng-select-container .ng-value-container .ng-value{-webkit-user-select:none;user-select:none;cursor:default}.ng-select.ng-select-disabled .ng-arrow-wrapper{cursor:default}.ng-select.ng-select-filtered .ng-placeholder{display:none}.ng-select .ng-select-container{cursor:default;display:flex;outline:none;overflow:hidden;position:relative;width:100%}.ng-select .ng-select-container .ng-value-container{display:flex;flex:1}.ng-select .ng-select-container .ng-value-container .ng-input{opacity:0}.ng-select .ng-select-container .ng-value-container .ng-input>input{box-sizing:content-box;background:none transparent;border:0 none;box-shadow:none;outline:none;padding:0;cursor:default;width:100%}.ng-select .ng-select-container .ng-value-container .ng-input>input::-ms-clear{display:none}.ng-select .ng-select-container .ng-value-container .ng-input>input[readonly]{-webkit-user-select:none;user-select:none;width:0;padding:0}.ng-select.ng-select-single.ng-select-filtered .ng-select-container .ng-value-container .ng-value{visibility:hidden}.ng-select.ng-select-single .ng-select-container .ng-value-container{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ng-select.ng-select-single .ng-select-container .ng-value-container .ng-value{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ng-select.ng-select-single .ng-select-container .ng-value-container .ng-value .ng-value-icon{display:none}.ng-select.ng-select-single .ng-select-container .ng-value-container .ng-input{position:absolute;left:0;width:100%}.ng-select.ng-select-multiple.ng-select-disabled>.ng-select-container .ng-value-container .ng-value .ng-value-icon{display:none}.ng-select.ng-select-multiple .ng-select-container .ng-value-container{flex-wrap:wrap}.ng-select.ng-select-multiple .ng-select-container .ng-value-container .ng-placeholder{position:absolute}.ng-select.ng-select-multiple .ng-select-container .ng-value-container .ng-value{white-space:nowrap}.ng-select.ng-select-multiple .ng-select-container .ng-value-container .ng-value.ng-value-disabled .ng-value-icon{display:none}.ng-select.ng-select-multiple .ng-select-container .ng-value-container .ng-value .ng-value-icon{cursor:pointer}.ng-select.ng-select-multiple .ng-select-container .ng-value-container .ng-input{flex:1;z-index:2}.ng-select.ng-select-multiple .ng-select-container .ng-value-container .ng-placeholder{z-index:1}.ng-select .ng-clear-wrapper{cursor:pointer;position:relative;width:17px;-webkit-user-select:none;user-select:none}.ng-select .ng-clear-wrapper .ng-clear{display:inline-block;font-size:18px;line-height:1;pointer-events:none}.ng-select .ng-spinner-loader{border-radius:50%;width:17px;height:17px;margin-right:5px;font-size:10px;position:relative;text-indent:-9999em;border-top:2px solid rgba(66,66,66,.2);border-right:2px solid rgba(66,66,66,.2);border-bottom:2px solid rgba(66,66,66,.2);border-left:2px solid #424242;transform:translateZ(0);animation:load8 .8s infinite linear}.ng-select .ng-spinner-loader:after{border-radius:50%;width:17px;height:17px}@keyframes load8{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.ng-select .ng-arrow-wrapper{cursor:pointer;position:relative;text-align:center;-webkit-user-select:none;user-select:none}.ng-select .ng-arrow-wrapper .ng-arrow{pointer-events:none;display:inline-block;height:0;width:0;position:relative}.ng-dropdown-panel{box-sizing:border-box;position:absolute;opacity:0;width:100%;z-index:1050;-webkit-overflow-scrolling:touch}.ng-dropdown-panel .ng-dropdown-panel-items{display:block;height:auto;box-sizing:border-box;max-height:240px;overflow-y:auto}.ng-dropdown-panel .ng-dropdown-panel-items .ng-optgroup{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ng-dropdown-panel .ng-dropdown-panel-items .ng-option{box-sizing:border-box;cursor:pointer;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ng-dropdown-panel .ng-dropdown-panel-items .ng-option .ng-option-label:empty:before{content:\\\"\\\\200b\\\"}.ng-dropdown-panel .ng-dropdown-panel-items .ng-option .highlighted{font-weight:bold;text-decoration:underline}.ng-dropdown-panel .ng-dropdown-panel-items .ng-option.disabled{cursor:default}.ng-dropdown-panel .scroll-host{overflow:hidden;overflow-y:auto;position:relative;display:block;-webkit-overflow-scrolling:touch}.ng-dropdown-panel .scrollable-content{top:0;left:0;width:100%;height:100%;position:absolute}.ng-dropdown-panel .total-padding{width:1px;opacity:0}\\n\"], encapsulation: 2, changeDetection: 0 });\nNgSelectComponent.ctorParameters = () => [\n    { type: String, decorators: [{ type: Attribute, args: ['class',] }] },\n    { type: undefined, decorators: [{ type: Attribute, args: ['autofocus',] }] },\n    { type: NgSelectConfig },\n    { type: undefined, decorators: [{ type: Inject, args: [SELECTION_MODEL_FACTORY,] }] },\n    { type: ElementRef },\n    { type: ChangeDetectorRef },\n    { type: ConsoleService }\n];\nNgSelectComponent.propDecorators = {\n    bindLabel: [{ type: Input }],\n    bindValue: [{ type: Input }],\n    markFirst: [{ type: Input }],\n    placeholder: [{ type: Input }],\n    notFoundText: [{ type: Input }],\n    typeToSearchText: [{ type: Input }],\n    addTagText: [{ type: Input }],\n    loadingText: [{ type: Input }],\n    clearAllText: [{ type: Input }],\n    appearance: [{ type: Input }],\n    dropdownPosition: [{ type: Input }],\n    appendTo: [{ type: Input }],\n    loading: [{ type: Input }],\n    closeOnSelect: [{ type: Input }],\n    hideSelected: [{ type: Input }],\n    selectOnTab: [{ type: Input }],\n    openOnEnter: [{ type: Input }],\n    maxSelectedItems: [{ type: Input }],\n    groupBy: [{ type: Input }],\n    groupValue: [{ type: Input }],\n    bufferAmount: [{ type: Input }],\n    virtualScroll: [{ type: Input }],\n    selectableGroup: [{ type: Input }],\n    selectableGroupAsModel: [{ type: Input }],\n    searchFn: [{ type: Input }],\n    trackByFn: [{ type: Input }],\n    clearOnBackspace: [{ type: Input }],\n    labelForId: [{ type: Input }],\n    inputAttrs: [{ type: Input }],\n    tabIndex: [{ type: Input }],\n    readonly: [{ type: Input }],\n    searchWhileComposing: [{ type: Input }],\n    minTermLength: [{ type: Input }],\n    editableSearchTerm: [{ type: Input }],\n    keyDownFn: [{ type: Input }],\n    typeahead: [{ type: Input }, { type: HostBinding, args: ['class.ng-select-typeahead',] }],\n    multiple: [{ type: Input }, { type: HostBinding, args: ['class.ng-select-multiple',] }],\n    addTag: [{ type: Input }, { type: HostBinding, args: ['class.ng-select-taggable',] }],\n    searchable: [{ type: Input }, { type: HostBinding, args: ['class.ng-select-searchable',] }],\n    clearable: [{ type: Input }, { type: HostBinding, args: ['class.ng-select-clearable',] }],\n    isOpen: [{ type: Input }, { type: HostBinding, args: ['class.ng-select-opened',] }],\n    items: [{ type: Input }],\n    compareWith: [{ type: Input }],\n    clearSearchOnAdd: [{ type: Input }],\n    blurEvent: [{ type: Output, args: ['blur',] }],\n    focusEvent: [{ type: Output, args: ['focus',] }],\n    changeEvent: [{ type: Output, args: ['change',] }],\n    openEvent: [{ type: Output, args: ['open',] }],\n    closeEvent: [{ type: Output, args: ['close',] }],\n    searchEvent: [{ type: Output, args: ['search',] }],\n    clearEvent: [{ type: Output, args: ['clear',] }],\n    addEvent: [{ type: Output, args: ['add',] }],\n    removeEvent: [{ type: Output, args: ['remove',] }],\n    scroll: [{ type: Output, args: ['scroll',] }],\n    scrollToEnd: [{ type: Output, args: ['scrollToEnd',] }],\n    optionTemplate: [{ type: ContentChild, args: [NgOptionTemplateDirective, { read: TemplateRef },] }],\n    optgroupTemplate: [{ type: ContentChild, args: [NgOptgroupTemplateDirective, { read: TemplateRef },] }],\n    labelTemplate: [{ type: ContentChild, args: [NgLabelTemplateDirective, { read: TemplateRef },] }],\n    multiLabelTemplate: [{ type: ContentChild, args: [NgMultiLabelTemplateDirective, { read: TemplateRef },] }],\n    headerTemplate: [{ type: ContentChild, args: [NgHeaderTemplateDirective, { read: TemplateRef },] }],\n    footerTemplate: [{ type: ContentChild, args: [NgFooterTemplateDirective, { read: TemplateRef },] }],\n    notFoundTemplate: [{ type: ContentChild, args: [NgNotFoundTemplateDirective, { read: TemplateRef },] }],\n    typeToSearchTemplate: [{ type: ContentChild, args: [NgTypeToSearchTemplateDirective, { read: TemplateRef },] }],\n    loadingTextTemplate: [{ type: ContentChild, args: [NgLoadingTextTemplateDirective, { read: TemplateRef },] }],\n    tagTemplate: [{ type: ContentChild, args: [NgTagTemplateDirective, { read: TemplateRef },] }],\n    loadingSpinnerTemplate: [{ type: ContentChild, args: [NgLoadingSpinnerTemplateDirective, { read: TemplateRef },] }],\n    dropdownPanel: [{ type: ViewChild, args: [forwardRef(() => NgDropdownPanelComponent),] }],\n    searchInput: [{ type: ViewChild, args: ['searchInput', { static: true },] }],\n    ngOptions: [{ type: ContentChildren, args: [NgOptionComponent, { descendants: true },] }],\n    disabled: [{ type: HostBinding, args: ['class.ng-select-disabled',] }],\n    filtered: [{ type: HostBinding, args: ['class.ng-select-filtered',] }],\n    handleKeyDown: [{ type: HostListener, args: ['keydown', ['$event'],] }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(NgSelectComponent, [{\n        type: Component,\n        args: [{ selector: 'ng-select', template: \"<div\\n    (mousedown)=\\\"handleMousedown($event)\\\"\\n    [class.ng-appearance-outline]=\\\"appearance === 'outline'\\\"\\n    [class.ng-has-value]=\\\"hasValue\\\"\\n    class=\\\"ng-select-container\\\">\\n\\n    <div class=\\\"ng-value-container\\\">\\n        <div class=\\\"ng-placeholder\\\">{{placeholder}}</div>\\n\\n        <ng-container *ngIf=\\\"(!multiLabelTemplate  || !multiple ) && selectedItems.length > 0\\\">\\n            <div [class.ng-value-disabled]=\\\"item.disabled\\\" class=\\\"ng-value\\\" *ngFor=\\\"let item of selectedItems; trackBy: trackByOption\\\">\\n                <ng-template #defaultLabelTemplate>\\n                    <span class=\\\"ng-value-icon left\\\" (click)=\\\"unselect(item);\\\" aria-hidden=\\\"true\\\">\\u00D7</span>\\n                    <span class=\\\"ng-value-label\\\" [ngItemLabel]=\\\"item.label\\\" [escape]=\\\"escapeHTML\\\"></span>\\n                </ng-template>\\n\\n                <ng-template\\n                    [ngTemplateOutlet]=\\\"labelTemplate || defaultLabelTemplate\\\"\\n                    [ngTemplateOutletContext]=\\\"{ item: item.value, clear: clearItem, label: item.label }\\\">\\n                </ng-template>\\n            </div>\\n        </ng-container>\\n\\n        <ng-template *ngIf=\\\"multiple && multiLabelTemplate && selectedValues.length > 0\\\"\\n                [ngTemplateOutlet]=\\\"multiLabelTemplate\\\"\\n                [ngTemplateOutletContext]=\\\"{ items: selectedValues, clear: clearItem }\\\">\\n        </ng-template>\\n\\n        <div class=\\\"ng-input\\\"\\n            role=\\\"combobox\\\" \\n            [attr.aria-expanded]=\\\"isOpen\\\" \\n            [attr.aria-owns]=\\\"isOpen ? dropdownId : null\\\" \\n            aria-haspopup=\\\"listbox\\\">\\n\\n            <input #searchInput\\n                   [attr.id]=\\\"labelForId\\\"\\n                   [attr.tabindex]=\\\"tabIndex\\\"\\n                   [readOnly]=\\\"!searchable || itemsList.maxItemsSelected\\\"\\n                   [disabled]=\\\"disabled\\\"\\n                   [value]=\\\"searchTerm ? searchTerm : ''\\\"\\n                   (input)=\\\"filter(searchInput.value)\\\"\\n                   (compositionstart)=\\\"onCompositionStart()\\\"\\n                   (compositionend)=\\\"onCompositionEnd(searchInput.value)\\\"\\n                   (focus)=\\\"onInputFocus($event)\\\"\\n                   (blur)=\\\"onInputBlur($event)\\\"\\n                   (change)=\\\"$event.stopPropagation()\\\"\\n                   [attr.aria-activedescendant]=\\\"isOpen ? itemsList?.markedItem?.htmlId : null\\\"\\n                   aria-autocomplete=\\\"list\\\"\\n                   [attr.aria-controls]=\\\"isOpen ? dropdownId : null\\\">\\n        </div>\\n    </div>\\n\\n    <ng-container *ngIf=\\\"loading\\\">\\n        <ng-template #defaultLoadingSpinnerTemplate>\\n            <div class=\\\"ng-spinner-loader\\\"></div>\\n        </ng-template>\\n\\n        <ng-template\\n            [ngTemplateOutlet]=\\\"loadingSpinnerTemplate || defaultLoadingSpinnerTemplate\\\">\\n        </ng-template>\\n    </ng-container>\\n\\n    <span *ngIf=\\\"showClear()\\\" class=\\\"ng-clear-wrapper\\\" title=\\\"{{clearAllText}}\\\">\\n        <span class=\\\"ng-clear\\\" aria-hidden=\\\"true\\\">\\u00D7</span>\\n    </span>\\n\\n    <span class=\\\"ng-arrow-wrapper\\\">\\n        <span class=\\\"ng-arrow\\\"></span>\\n    </span>\\n</div>\\n\\n<ng-dropdown-panel *ngIf=\\\"isOpen\\\"\\n                   class=\\\"ng-dropdown-panel\\\"\\n                   [virtualScroll]=\\\"virtualScroll\\\"\\n                   [bufferAmount]=\\\"bufferAmount\\\"\\n                   [appendTo]=\\\"appendTo\\\"\\n                   [position]=\\\"dropdownPosition\\\"\\n                   [headerTemplate]=\\\"headerTemplate\\\"\\n                   [footerTemplate]=\\\"footerTemplate\\\"\\n                   [filterValue]=\\\"searchTerm\\\"\\n                   [items]=\\\"itemsList.filteredItems\\\"\\n                   [markedItem]=\\\"itemsList.markedItem\\\"\\n                   (update)=\\\"viewPortItems = $event\\\"\\n                   (scroll)=\\\"scroll.emit($event)\\\"\\n                   (scrollToEnd)=\\\"scrollToEnd.emit($event)\\\"\\n                   (outsideClick)=\\\"close()\\\"\\n                   [class.ng-select-multiple]=\\\"multiple\\\"\\n                   [ngClass]=\\\"appendTo ? classes : null\\\"\\n                   [id]=\\\"dropdownId\\\"\\n                   role=\\\"listbox\\\"\\n                   aria-label=\\\"Options list\\\">\\n\\n    <ng-container>\\n        <div class=\\\"ng-option\\\" [attr.role]=\\\"item.children ? 'group' : 'option'\\\" (click)=\\\"toggleItem(item)\\\" (mouseover)=\\\"onItemHover(item)\\\"\\n                *ngFor=\\\"let item of viewPortItems; trackBy: trackByOption\\\"\\n                [class.ng-option-disabled]=\\\"item.disabled\\\"\\n                [class.ng-option-selected]=\\\"item.selected\\\"\\n                [class.ng-optgroup]=\\\"item.children\\\"\\n                [class.ng-option]=\\\"!item.children\\\"\\n                [class.ng-option-child]=\\\"!!item.parent\\\"\\n                [class.ng-option-marked]=\\\"item === itemsList.markedItem\\\"\\n                [attr.aria-selected]=\\\"item.selected\\\"\\n                [attr.id]=\\\"item?.htmlId\\\">\\n\\n            <ng-template #defaultOptionTemplate>\\n                <span class=\\\"ng-option-label\\\" [ngItemLabel]=\\\"item.label\\\" [escape]=\\\"escapeHTML\\\"></span>\\n            </ng-template>\\n\\n            <ng-template\\n                [ngTemplateOutlet]=\\\"item.children ? (optgroupTemplate || defaultOptionTemplate) : (optionTemplate || defaultOptionTemplate)\\\"\\n                [ngTemplateOutletContext]=\\\"{ item: item.value, item$:item, index: item.index, searchTerm: searchTerm }\\\">\\n            </ng-template>\\n        </div>\\n\\n        <div class=\\\"ng-option\\\" [class.ng-option-marked]=\\\"!itemsList.markedItem\\\" (mouseover)=\\\"itemsList.unmarkItem()\\\" role=\\\"option\\\" (click)=\\\"selectTag()\\\" *ngIf=\\\"showAddTag\\\">\\n            <ng-template #defaultTagTemplate>\\n                <span><span class=\\\"ng-tag-label\\\">{{addTagText}}</span>\\\"{{searchTerm}}\\\"</span>\\n            </ng-template>\\n\\n            <ng-template\\n                [ngTemplateOutlet]=\\\"tagTemplate || defaultTagTemplate\\\"\\n                [ngTemplateOutletContext]=\\\"{ searchTerm: searchTerm }\\\">\\n            </ng-template>\\n        </div>\\n    </ng-container>\\n\\n    <ng-container *ngIf=\\\"showNoItemsFound()\\\">\\n        <ng-template #defaultNotFoundTemplate>\\n            <div class=\\\"ng-option ng-option-disabled\\\">{{notFoundText}}</div>\\n        </ng-template>\\n\\n        <ng-template\\n            [ngTemplateOutlet]=\\\"notFoundTemplate || defaultNotFoundTemplate\\\"\\n            [ngTemplateOutletContext]=\\\"{ searchTerm: searchTerm }\\\">\\n        </ng-template>\\n    </ng-container>\\n\\n    <ng-container *ngIf=\\\"showTypeToSearch()\\\">\\n        <ng-template #defaultTypeToSearchTemplate>\\n            <div class=\\\"ng-option ng-option-disabled\\\">{{typeToSearchText}}</div>\\n        </ng-template>\\n\\n        <ng-template\\n            [ngTemplateOutlet]=\\\"typeToSearchTemplate || defaultTypeToSearchTemplate\\\">\\n        </ng-template>\\n    </ng-container>\\n\\n    <ng-container *ngIf=\\\"loading && itemsList.filteredItems.length === 0\\\">\\n        <ng-template #defaultLoadingTextTemplate>\\n            <div class=\\\"ng-option ng-option-disabled\\\">{{loadingText}}</div>\\n        </ng-template>\\n\\n        <ng-template\\n            [ngTemplateOutlet]=\\\"loadingTextTemplate || defaultLoadingTextTemplate\\\"\\n            [ngTemplateOutletContext]=\\\"{ searchTerm: searchTerm }\\\">\\n        </ng-template>\\n    </ng-container>\\n\\n</ng-dropdown-panel>\\n\", providers: [{\n                        provide: NG_VALUE_ACCESSOR,\n                        useExisting: forwardRef(() => NgSelectComponent),\n                        multi: true\n                    }, NgDropdownPanelService], encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.OnPush, host: {\n                    '[class.ng-select]': 'useDefaultClass',\n                    '[class.ng-select-single]': '!multiple'\n                }, styles: [\".ng-select{position:relative;display:block;box-sizing:border-box}.ng-select div,.ng-select input,.ng-select span{box-sizing:border-box}.ng-select [hidden]{display:none}.ng-select.ng-select-searchable .ng-select-container .ng-value-container .ng-input{opacity:1}.ng-select.ng-select-opened .ng-select-container{z-index:1001}.ng-select.ng-select-disabled .ng-select-container .ng-value-container .ng-placeholder,.ng-select.ng-select-disabled .ng-select-container .ng-value-container .ng-value{-webkit-user-select:none;user-select:none;cursor:default}.ng-select.ng-select-disabled .ng-arrow-wrapper{cursor:default}.ng-select.ng-select-filtered .ng-placeholder{display:none}.ng-select .ng-select-container{cursor:default;display:flex;outline:none;overflow:hidden;position:relative;width:100%}.ng-select .ng-select-container .ng-value-container{display:flex;flex:1}.ng-select .ng-select-container .ng-value-container .ng-input{opacity:0}.ng-select .ng-select-container .ng-value-container .ng-input>input{box-sizing:content-box;background:none transparent;border:0 none;box-shadow:none;outline:none;padding:0;cursor:default;width:100%}.ng-select .ng-select-container .ng-value-container .ng-input>input::-ms-clear{display:none}.ng-select .ng-select-container .ng-value-container .ng-input>input[readonly]{-webkit-user-select:none;user-select:none;width:0;padding:0}.ng-select.ng-select-single.ng-select-filtered .ng-select-container .ng-value-container .ng-value{visibility:hidden}.ng-select.ng-select-single .ng-select-container .ng-value-container{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ng-select.ng-select-single .ng-select-container .ng-value-container .ng-value{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ng-select.ng-select-single .ng-select-container .ng-value-container .ng-value .ng-value-icon{display:none}.ng-select.ng-select-single .ng-select-container .ng-value-container .ng-input{position:absolute;left:0;width:100%}.ng-select.ng-select-multiple.ng-select-disabled>.ng-select-container .ng-value-container .ng-value .ng-value-icon{display:none}.ng-select.ng-select-multiple .ng-select-container .ng-value-container{flex-wrap:wrap}.ng-select.ng-select-multiple .ng-select-container .ng-value-container .ng-placeholder{position:absolute}.ng-select.ng-select-multiple .ng-select-container .ng-value-container .ng-value{white-space:nowrap}.ng-select.ng-select-multiple .ng-select-container .ng-value-container .ng-value.ng-value-disabled .ng-value-icon{display:none}.ng-select.ng-select-multiple .ng-select-container .ng-value-container .ng-value .ng-value-icon{cursor:pointer}.ng-select.ng-select-multiple .ng-select-container .ng-value-container .ng-input{flex:1;z-index:2}.ng-select.ng-select-multiple .ng-select-container .ng-value-container .ng-placeholder{z-index:1}.ng-select .ng-clear-wrapper{cursor:pointer;position:relative;width:17px;-webkit-user-select:none;user-select:none}.ng-select .ng-clear-wrapper .ng-clear{display:inline-block;font-size:18px;line-height:1;pointer-events:none}.ng-select .ng-spinner-loader{border-radius:50%;width:17px;height:17px;margin-right:5px;font-size:10px;position:relative;text-indent:-9999em;border-top:2px solid rgba(66,66,66,.2);border-right:2px solid rgba(66,66,66,.2);border-bottom:2px solid rgba(66,66,66,.2);border-left:2px solid #424242;transform:translateZ(0);animation:load8 .8s infinite linear}.ng-select .ng-spinner-loader:after{border-radius:50%;width:17px;height:17px}@keyframes load8{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.ng-select .ng-arrow-wrapper{cursor:pointer;position:relative;text-align:center;-webkit-user-select:none;user-select:none}.ng-select .ng-arrow-wrapper .ng-arrow{pointer-events:none;display:inline-block;height:0;width:0;position:relative}.ng-dropdown-panel{box-sizing:border-box;position:absolute;opacity:0;width:100%;z-index:1050;-webkit-overflow-scrolling:touch}.ng-dropdown-panel .ng-dropdown-panel-items{display:block;height:auto;box-sizing:border-box;max-height:240px;overflow-y:auto}.ng-dropdown-panel 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type: undefined, decorators: [{\n                type: Attribute,\n                args: ['autofocus']\n            }] }, { type: NgSelectConfig }, { type: undefined, decorators: [{\n                type: Inject,\n                args: [SELECTION_MODEL_FACTORY]\n            }] }, { type: ɵngcc0.ElementRef }, { type: ɵngcc0.ChangeDetectorRef }, { type: ConsoleService }]; }, { markFirst: [{\n            type: Input\n        }], dropdownPosition: [{\n            type: Input\n        }], loading: [{\n            type: Input\n        }], closeOnSelect: [{\n            type: Input\n        }], hideSelected: [{\n            type: Input\n        }], selectOnTab: [{\n            type: Input\n        }], bufferAmount: [{\n            type: Input\n        }], selectableGroup: [{\n            type: Input\n        }], selectableGroupAsModel: [{\n            type: Input\n        }], searchFn: [{\n            type: Input\n        }], trackByFn: [{\n            type: Input\n        }], clearOnBackspace: [{\n            type: Input\n        }], labelForId: [{\n            type: Input\n        }], inputAttrs: [{\n            type: Input\n        }], readonly: [{\n            type: Input\n        }], searchWhileComposing: [{\n            type: Input\n        }], minTermLength: [{\n            type: Input\n        }], editableSearchTerm: [{\n            type: Input\n        }], keyDownFn: [{\n            type: Input\n        }], multiple: [{\n            type: Input\n        }, {\n            type: HostBinding,\n            args: ['class.ng-select-multiple']\n        }], addTag: [{\n            type: Input\n        }, {\n            type: HostBinding,\n            args: ['class.ng-select-taggable']\n        }], searchable: [{\n            type: Input\n        }, {\n            type: HostBinding,\n            args: ['class.ng-select-searchable']\n        }], clearable: [{\n            type: Input\n        }, {\n            type: HostBinding,\n            args: ['class.ng-select-clearable']\n        }], isOpen: [{\n            type: Input\n        }, {\n            type: HostBinding,\n            args: ['class.ng-select-opened']\n        }], blurEvent: [{\n            type: Output,\n            args: ['blur']\n        }], focusEvent: [{\n            type: Output,\n            args: ['focus']\n        }], changeEvent: [{\n            type: Output,\n            args: ['change']\n        }], openEvent: [{\n            type: Output,\n            args: ['open']\n        }], closeEvent: [{\n            type: Output,\n            args: ['close']\n        }], searchEvent: [{\n            type: Output,\n            args: ['search']\n        }], clearEvent: [{\n            type: Output,\n            args: ['clear']\n        }], addEvent: [{\n            type: Output,\n            args: ['add']\n        }], removeEvent: [{\n            type: Output,\n            args: ['remove']\n        }], scroll: [{\n            type: Output,\n            args: ['scroll']\n        }], scrollToEnd: [{\n            type: Output,\n            args: ['scrollToEnd']\n        }], items: [{\n            type: Input\n        }], compareWith: [{\n            type: Input\n        }], clearSearchOnAdd: [{\n            type: Input\n        }], disabled: [{\n            type: HostBinding,\n            args: ['class.ng-select-disabled']\n        }], filtered: [{\n            type: HostBinding,\n            args: ['class.ng-select-filtered']\n        }], handleKeyDown: [{\n            type: HostListener,\n            args: ['keydown', ['$event']]\n        }], bindLabel: [{\n            type: Input\n        }], placeholder: [{\n            type: Input\n        }], notFoundText: [{\n            type: Input\n        }], typeToSearchText: [{\n            type: Input\n        }], addTagText: [{\n            type: Input\n        }], loadingText: [{\n            type: Input\n        }], clearAllText: [{\n            type: Input\n        }], virtualScroll: [{\n            type: Input\n        }], openOnEnter: [{\n            type: Input\n        }], appendTo: [{\n            type: Input\n        }], bindValue: [{\n            type: Input\n        }], appearance: [{\n            type: Input\n        }], maxSelectedItems: [{\n            type: Input\n        }], groupBy: [{\n            type: Input\n        }], groupValue: [{\n            type: Input\n        }], tabIndex: [{\n            type: Input\n        }], typeahead: [{\n            type: Input\n        }, {\n            type: HostBinding,\n            args: ['class.ng-select-typeahead']\n        }], optionTemplate: [{\n            type: ContentChild,\n            args: [NgOptionTemplateDirective, { read: TemplateRef }]\n        }], optgroupTemplate: [{\n            type: ContentChild,\n            args: [NgOptgroupTemplateDirective, { read: TemplateRef }]\n        }], labelTemplate: [{\n            type: ContentChild,\n            args: [NgLabelTemplateDirective, { read: TemplateRef }]\n        }], multiLabelTemplate: [{\n            type: ContentChild,\n            args: [NgMultiLabelTemplateDirective, { read: TemplateRef }]\n        }], headerTemplate: [{\n            type: ContentChild,\n            args: [NgHeaderTemplateDirective, { read: TemplateRef }]\n        }], footerTemplate: [{\n            type: ContentChild,\n            args: [NgFooterTemplateDirective, { read: TemplateRef }]\n        }], notFoundTemplate: [{\n            type: ContentChild,\n            args: [NgNotFoundTemplateDirective, { read: TemplateRef }]\n        }], typeToSearchTemplate: [{\n            type: ContentChild,\n            args: [NgTypeToSearchTemplateDirective, { read: TemplateRef }]\n        }], loadingTextTemplate: [{\n            type: ContentChild,\n            args: [NgLoadingTextTemplateDirective, { read: TemplateRef }]\n        }], tagTemplate: [{\n            type: ContentChild,\n            args: [NgTagTemplateDirective, { read: TemplateRef }]\n        }], loadingSpinnerTemplate: [{\n            type: ContentChild,\n            args: [NgLoadingSpinnerTemplateDirective, { read: TemplateRef }]\n        }], dropdownPanel: [{\n            type: ViewChild,\n            args: [forwardRef(() => NgDropdownPanelComponent)]\n        }], searchInput: [{\n            type: ViewChild,\n            args: ['searchInput', { static: true }]\n        }], ngOptions: [{\n            type: ContentChildren,\n            args: [NgOptionComponent, { descendants: true }]\n        }] }); })();\n\nfunction DefaultSelectionModelFactory() {\n    return new DefaultSelectionModel();\n}\nclass DefaultSelectionModel {\n    constructor() {\n        this._selected = [];\n    }\n    get value() {\n        return this._selected;\n    }\n    select(item, multiple, groupAsModel) {\n        item.selected = true;\n        if (!item.children || (!multiple && groupAsModel)) {\n            this._selected.push(item);\n        }\n        if (multiple) {\n            if (item.parent) {\n                const childrenCount = item.parent.children.length;\n                const selectedCount = item.parent.children.filter(x => x.selected).length;\n                item.parent.selected = childrenCount === selectedCount;\n            }\n            else if (item.children) {\n                this._setChildrenSelectedState(item.children, true);\n                this._removeChildren(item);\n                if (groupAsModel && this._activeChildren(item)) {\n                    this._selected = [...this._selected.filter(x => x.parent !== item), item];\n                }\n                else {\n                    this._selected = [...this._selected, ...item.children.filter(x => !x.disabled)];\n                }\n            }\n        }\n    }\n    unselect(item, multiple) {\n        this._selected = this._selected.filter(x => x !== item);\n        item.selected = false;\n        if (multiple) {\n            if (item.parent && item.parent.selected) {\n                const children = item.parent.children;\n                this._removeParent(item.parent);\n                this._removeChildren(item.parent);\n                this._selected.push(...children.filter(x => x !== item && !x.disabled));\n                item.parent.selected = false;\n            }\n            else if (item.children) {\n                this._setChildrenSelectedState(item.children, false);\n                this._removeChildren(item);\n            }\n        }\n    }\n    clear(keepDisabled) {\n        this._selected = keepDisabled ? this._selected.filter(x => x.disabled) : [];\n    }\n    _setChildrenSelectedState(children, selected) {\n        for (const child of children) {\n            if (child.disabled) {\n                continue;\n            }\n            child.selected = selected;\n        }\n    }\n    _removeChildren(parent) {\n        this._selected = [\n            ...this._selected.filter(x => x.parent !== parent),\n            ...parent.children.filter(x => x.parent === parent && x.disabled && x.selected)\n        ];\n    }\n    _removeParent(parent) {\n        this._selected = this._selected.filter(x => x !== parent);\n    }\n    _activeChildren(item) {\n        return item.children.every(x => !x.disabled || x.selected);\n    }\n}\n\nconst ɵ0 = DefaultSelectionModelFactory;\nclass NgSelectModule {\n}\nNgSelectModule.ɵfac = function NgSelectModule_Factory(t) { return new (t || NgSelectModule)(); };\nNgSelectModule.ɵmod = /*@__PURE__*/ ɵngcc0.ɵɵdefineNgModule({ type: NgSelectModule });\nNgSelectModule.ɵinj = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjector({ providers: [\n        { provide: SELECTION_MODEL_FACTORY, useValue: ɵ0 }\n    ], imports: [CommonModule] });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(NgSelectModule, [{\n        type: NgModule,\n        args: [{\n                declarations: [\n                    NgDropdownPanelComponent,\n                    NgOptionComponent,\n                    NgSelectComponent,\n                    NgOptgroupTemplateDirective,\n                    NgOptionTemplateDirective,\n                    NgLabelTemplateDirective,\n                    NgMultiLabelTemplateDirective,\n                    NgHeaderTemplateDirective,\n                    NgFooterTemplateDirective,\n                    NgNotFoundTemplateDirective,\n                    NgTypeToSearchTemplateDirective,\n                    NgLoadingTextTemplateDirective,\n                    NgTagTemplateDirective,\n                    NgLoadingSpinnerTemplateDirective,\n                    NgItemLabelDirective\n                ],\n                imports: [\n                    CommonModule\n                ],\n                exports: [\n                    NgSelectComponent,\n                    NgOptionComponent,\n                    NgOptgroupTemplateDirective,\n                    NgOptionTemplateDirective,\n                    NgLabelTemplateDirective,\n                    NgMultiLabelTemplateDirective,\n                    NgHeaderTemplateDirective,\n                    NgFooterTemplateDirective,\n                    NgNotFoundTemplateDirective,\n                    NgTypeToSearchTemplateDirective,\n                    NgLoadingTextTemplateDirective,\n                    NgTagTemplateDirective,\n                    NgLoadingSpinnerTemplateDirective\n                ],\n                providers: [\n                    { provide: SELECTION_MODEL_FACTORY, useValue: ɵ0 }\n                ]\n            }]\n    }], null, null); })();\n(function () { (typeof ngJitMode === \"undefined\" || ngJitMode) && ɵngcc0.ɵɵsetNgModuleScope(NgSelectModule, { declarations: function () { return [NgDropdownPanelComponent, NgOptionComponent, NgSelectComponent, NgOptgroupTemplateDirective, NgOptionTemplateDirective, NgLabelTemplateDirective, NgMultiLabelTemplateDirective, NgHeaderTemplateDirective, NgFooterTemplateDirective, NgNotFoundTemplateDirective, NgTypeToSearchTemplateDirective, NgLoadingTextTemplateDirective, NgTagTemplateDirective, NgLoadingSpinnerTemplateDirective, NgItemLabelDirective]; }, imports: function () { return [CommonModule]; }, exports: function () { return [NgSelectComponent, NgOptionComponent, NgOptgroupTemplateDirective, NgOptionTemplateDirective, NgLabelTemplateDirective, NgMultiLabelTemplateDirective, NgHeaderTemplateDirective, NgFooterTemplateDirective, NgNotFoundTemplateDirective, NgTypeToSearchTemplateDirective, NgLoadingTextTemplateDirective, NgTagTemplateDirective, NgLoadingSpinnerTemplateDirective]; } }); })();\n\n/*\n * Public API Surface of ng-select\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { NgSelectComponent, NgSelectConfig, NgSelectModule, SELECTION_MODEL_FACTORY, DefaultSelectionModelFactory as ɵb, DefaultSelectionModel as ɵc, NgDropdownPanelService as ɵd, NgItemLabelDirective as ɵe, NgOptionTemplateDirective as ɵf, NgOptgroupTemplateDirective as ɵg, NgLabelTemplateDirective as ɵh, NgMultiLabelTemplateDirective as ɵi, NgHeaderTemplateDirective as ɵj, NgFooterTemplateDirective as ɵk, NgNotFoundTemplateDirective as ɵl, NgTypeToSearchTemplateDirective as ɵm, NgLoadingTextTemplateDirective as ɵn, NgTagTemplateDirective as ɵo, NgLoadingSpinnerTemplateDirective as ɵp, NgDropdownPanelComponent as ɵq, NgOptionComponent as ɵr, ConsoleService as ɵs };\n\n","import { async } from '../scheduler/async';\nimport { audit } from './audit';\nimport { timer } from '../observable/timer';\nexport function auditTime(duration, scheduler = async) {\n    return audit(() => timer(duration, scheduler));\n}\n","/*!\n * jQuery JavaScript Library v3.7.1\n * https://jquery.com/\n *\n * Copyright OpenJS Foundation and other contributors\n * Released under the MIT license\n * https://jquery.org/license\n *\n * Date: 2023-08-28T13:37Z\n */\n( function( global, factory ) {\n\n\t\"use strict\";\n\n\tif ( typeof module === \"object\" && typeof module.exports === \"object\" ) {\n\n\t\t// For CommonJS and CommonJS-like environments where a proper `window`\n\t\t// is present, execute the factory and get jQuery.\n\t\t// For environments that do not have a `window` with a `document`\n\t\t// (such as Node.js), expose a factory as module.exports.\n\t\t// This accentuates the need for the creation of a real `window`.\n\t\t// e.g. var jQuery = require(\"jquery\")(window);\n\t\t// See ticket trac-14549 for more info.\n\t\tmodule.exports = global.document ?\n\t\t\tfactory( global, true ) :\n\t\t\tfunction( w ) {\n\t\t\t\tif ( !w.document ) {\n\t\t\t\t\tthrow new Error( \"jQuery requires a window with a document\" );\n\t\t\t\t}\n\t\t\t\treturn factory( w );\n\t\t\t};\n\t} else {\n\t\tfactory( global );\n\t}\n\n// Pass this if window is not defined yet\n} )( typeof window !== \"undefined\" ? window : this, function( window, noGlobal ) {\n\n// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1\n// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode\n// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common\n// enough that all such attempts are guarded in a try block.\n\"use strict\";\n\nvar arr = [];\n\nvar getProto = Object.getPrototypeOf;\n\nvar slice = arr.slice;\n\nvar flat = arr.flat ? function( array ) {\n\treturn arr.flat.call( array );\n} : function( array ) {\n\treturn arr.concat.apply( [], array );\n};\n\n\nvar push = arr.push;\n\nvar indexOf = arr.indexOf;\n\nvar class2type = {};\n\nvar toString = class2type.toString;\n\nvar hasOwn = class2type.hasOwnProperty;\n\nvar fnToString = hasOwn.toString;\n\nvar ObjectFunctionString = fnToString.call( Object );\n\nvar support = {};\n\nvar isFunction = function isFunction( obj ) {\n\n\t\t// Support: Chrome <=57, Firefox <=52\n\t\t// In some browsers, typeof returns \"function\" for HTML <object> elements\n\t\t// (i.e., `typeof document.createElement( \"object\" ) === \"function\"`).\n\t\t// We don't want to classify *any* DOM node as a function.\n\t\t// Support: QtWeb <=3.8.5, WebKit <=534.34, wkhtmltopdf tool <=0.12.5\n\t\t// Plus for old WebKit, typeof returns \"function\" for HTML collections\n\t\t// (e.g., `typeof document.getElementsByTagName(\"div\") === \"function\"`). (gh-4756)\n\t\treturn typeof obj === \"function\" && typeof obj.nodeType !== \"number\" &&\n\t\t\ttypeof obj.item !== \"function\";\n\t};\n\n\nvar isWindow = function isWindow( obj ) {\n\t\treturn obj != null && obj === obj.window;\n\t};\n\n\nvar document = window.document;\n\n\n\n\tvar preservedScriptAttributes = {\n\t\ttype: true,\n\t\tsrc: true,\n\t\tnonce: true,\n\t\tnoModule: true\n\t};\n\n\tfunction DOMEval( code, node, doc ) {\n\t\tdoc = doc || document;\n\n\t\tvar i, val,\n\t\t\tscript = doc.createElement( \"script\" );\n\n\t\tscript.text = code;\n\t\tif ( node ) {\n\t\t\tfor ( i in preservedScriptAttributes ) {\n\n\t\t\t\t// Support: Firefox 64+, Edge 18+\n\t\t\t\t// Some browsers don't support the \"nonce\" property on scripts.\n\t\t\t\t// On the other hand, just using `getAttribute` is not enough as\n\t\t\t\t// the `nonce` attribute is reset to an empty string whenever it\n\t\t\t\t// becomes browsing-context connected.\n\t\t\t\t// See https://github.com/whatwg/html/issues/2369\n\t\t\t\t// See https://html.spec.whatwg.org/#nonce-attributes\n\t\t\t\t// The `node.getAttribute` check was added for the sake of\n\t\t\t\t// `jQuery.globalEval` so that it can fake a nonce-containing node\n\t\t\t\t// via an object.\n\t\t\t\tval = node[ i ] || node.getAttribute && node.getAttribute( i );\n\t\t\t\tif ( val ) {\n\t\t\t\t\tscript.setAttribute( i, val );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\tdoc.head.appendChild( script ).parentNode.removeChild( script );\n\t}\n\n\nfunction toType( obj ) {\n\tif ( obj == null ) {\n\t\treturn obj + \"\";\n\t}\n\n\t// Support: Android <=2.3 only (functionish RegExp)\n\treturn typeof obj === \"object\" || typeof obj === \"function\" ?\n\t\tclass2type[ toString.call( obj ) ] || \"object\" :\n\t\ttypeof obj;\n}\n/* global Symbol */\n// Defining this global in .eslintrc.json would create a danger of using the global\n// unguarded in another place, it seems safer to define global only for this module\n\n\n\nvar version = \"3.7.1\",\n\n\trhtmlSuffix = /HTML$/i,\n\n\t// Define a local copy of jQuery\n\tjQuery = function( selector, context ) {\n\n\t\t// The jQuery object is actually just the init constructor 'enhanced'\n\t\t// Need init if jQuery is called (just allow error to be thrown if not included)\n\t\treturn new jQuery.fn.init( selector, context );\n\t};\n\njQuery.fn = jQuery.prototype = {\n\n\t// The current version of jQuery being used\n\tjquery: version,\n\n\tconstructor: jQuery,\n\n\t// The default length of a jQuery object is 0\n\tlength: 0,\n\n\ttoArray: function() {\n\t\treturn slice.call( this );\n\t},\n\n\t// Get the Nth element in the matched element set OR\n\t// Get the whole matched element set as a clean array\n\tget: function( num ) {\n\n\t\t// Return all the elements in a clean array\n\t\tif ( num == null ) {\n\t\t\treturn slice.call( this );\n\t\t}\n\n\t\t// Return just the one element from the set\n\t\treturn num < 0 ? this[ num + this.length ] : this[ num ];\n\t},\n\n\t// Take an array of elements and push it onto the stack\n\t// (returning the new matched element set)\n\tpushStack: function( elems ) {\n\n\t\t// Build a new jQuery matched element set\n\t\tvar ret = jQuery.merge( this.constructor(), elems );\n\n\t\t// Add the old object onto the stack (as a reference)\n\t\tret.prevObject = this;\n\n\t\t// Return the newly-formed element set\n\t\treturn ret;\n\t},\n\n\t// Execute a callback for every element in the matched set.\n\teach: function( callback ) {\n\t\treturn jQuery.each( this, callback );\n\t},\n\n\tmap: function( callback ) {\n\t\treturn this.pushStack( jQuery.map( this, function( elem, i ) {\n\t\t\treturn callback.call( elem, i, elem );\n\t\t} ) );\n\t},\n\n\tslice: function() {\n\t\treturn this.pushStack( slice.apply( this, arguments ) );\n\t},\n\n\tfirst: function() {\n\t\treturn this.eq( 0 );\n\t},\n\n\tlast: function() {\n\t\treturn this.eq( -1 );\n\t},\n\n\teven: function() {\n\t\treturn this.pushStack( jQuery.grep( this, function( _elem, i ) {\n\t\t\treturn ( i + 1 ) % 2;\n\t\t} ) );\n\t},\n\n\todd: function() {\n\t\treturn this.pushStack( jQuery.grep( this, function( _elem, i ) {\n\t\t\treturn i % 2;\n\t\t} ) );\n\t},\n\n\teq: function( i ) {\n\t\tvar len = this.length,\n\t\t\tj = +i + ( i < 0 ? len : 0 );\n\t\treturn this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] );\n\t},\n\n\tend: function() {\n\t\treturn this.prevObject || this.constructor();\n\t},\n\n\t// For internal use only.\n\t// Behaves like an Array's method, not like a jQuery method.\n\tpush: push,\n\tsort: arr.sort,\n\tsplice: arr.splice\n};\n\njQuery.extend = jQuery.fn.extend = function() {\n\tvar options, name, src, copy, copyIsArray, clone,\n\t\ttarget = arguments[ 0 ] || {},\n\t\ti = 1,\n\t\tlength = arguments.length,\n\t\tdeep = false;\n\n\t// Handle a deep copy situation\n\tif ( typeof target === \"boolean\" ) {\n\t\tdeep = target;\n\n\t\t// Skip the boolean and the target\n\t\ttarget = arguments[ i ] || {};\n\t\ti++;\n\t}\n\n\t// Handle case when target is a string or something (possible in deep copy)\n\tif ( typeof target !== \"object\" && !isFunction( target ) ) {\n\t\ttarget = {};\n\t}\n\n\t// Extend jQuery itself if only one argument is passed\n\tif ( i === length ) {\n\t\ttarget = this;\n\t\ti--;\n\t}\n\n\tfor ( ; i < length; i++ ) {\n\n\t\t// Only deal with non-null/undefined values\n\t\tif ( ( options = arguments[ i ] ) != null ) {\n\n\t\t\t// Extend the base object\n\t\t\tfor ( name in options ) {\n\t\t\t\tcopy = options[ name ];\n\n\t\t\t\t// Prevent Object.prototype pollution\n\t\t\t\t// Prevent never-ending loop\n\t\t\t\tif ( name === \"__proto__\" || target === copy ) {\n\t\t\t\t\tcontinue;\n\t\t\t\t}\n\n\t\t\t\t// Recurse if we're merging plain objects or arrays\n\t\t\t\tif ( deep && copy && ( jQuery.isPlainObject( copy ) ||\n\t\t\t\t\t( copyIsArray = Array.isArray( copy ) ) ) ) {\n\t\t\t\t\tsrc = target[ name ];\n\n\t\t\t\t\t// Ensure proper type for the source value\n\t\t\t\t\tif ( copyIsArray && !Array.isArray( src ) ) {\n\t\t\t\t\t\tclone = [];\n\t\t\t\t\t} else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) {\n\t\t\t\t\t\tclone = {};\n\t\t\t\t\t} else {\n\t\t\t\t\t\tclone = src;\n\t\t\t\t\t}\n\t\t\t\t\tcopyIsArray = false;\n\n\t\t\t\t\t// Never move original objects, clone them\n\t\t\t\t\ttarget[ name ] = jQuery.extend( deep, clone, copy );\n\n\t\t\t\t// Don't bring in undefined values\n\t\t\t\t} else if ( copy !== undefined ) {\n\t\t\t\t\ttarget[ name ] = copy;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// Return the modified object\n\treturn target;\n};\n\njQuery.extend( {\n\n\t// Unique for each copy of jQuery on the page\n\texpando: \"jQuery\" + ( version + Math.random() ).replace( /\\D/g, \"\" ),\n\n\t// Assume jQuery is ready without the ready module\n\tisReady: true,\n\n\terror: function( msg ) {\n\t\tthrow new Error( msg );\n\t},\n\n\tnoop: function() {},\n\n\tisPlainObject: function( obj ) {\n\t\tvar proto, Ctor;\n\n\t\t// Detect obvious negatives\n\t\t// Use toString instead of jQuery.type to catch host objects\n\t\tif ( !obj || toString.call( obj ) !== \"[object Object]\" ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tproto = getProto( obj );\n\n\t\t// Objects with no prototype (e.g., `Object.create( null )`) are plain\n\t\tif ( !proto ) {\n\t\t\treturn true;\n\t\t}\n\n\t\t// Objects with prototype are plain iff they were constructed by a global Object function\n\t\tCtor = hasOwn.call( proto, \"constructor\" ) && proto.constructor;\n\t\treturn typeof Ctor === \"function\" && fnToString.call( Ctor ) === ObjectFunctionString;\n\t},\n\n\tisEmptyObject: function( obj ) {\n\t\tvar name;\n\n\t\tfor ( name in obj ) {\n\t\t\treturn false;\n\t\t}\n\t\treturn true;\n\t},\n\n\t// Evaluates a script in a provided context; falls back to the global one\n\t// if not specified.\n\tglobalEval: function( code, options, doc ) {\n\t\tDOMEval( code, { nonce: options && options.nonce }, doc );\n\t},\n\n\teach: function( obj, callback ) {\n\t\tvar length, i = 0;\n\n\t\tif ( isArrayLike( obj ) ) {\n\t\t\tlength = obj.length;\n\t\t\tfor ( ; i < length; i++ ) {\n\t\t\t\tif ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tfor ( i in obj ) {\n\t\t\t\tif ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn obj;\n\t},\n\n\n\t// Retrieve the text value of an array of DOM nodes\n\ttext: function( elem ) {\n\t\tvar node,\n\t\t\tret = \"\",\n\t\t\ti = 0,\n\t\t\tnodeType = elem.nodeType;\n\n\t\tif ( !nodeType ) {\n\n\t\t\t// If no nodeType, this is expected to be an array\n\t\t\twhile ( ( node = elem[ i++ ] ) ) {\n\n\t\t\t\t// Do not traverse comment nodes\n\t\t\t\tret += jQuery.text( node );\n\t\t\t}\n\t\t}\n\t\tif ( nodeType === 1 || nodeType === 11 ) {\n\t\t\treturn elem.textContent;\n\t\t}\n\t\tif ( nodeType === 9 ) {\n\t\t\treturn elem.documentElement.textContent;\n\t\t}\n\t\tif ( nodeType === 3 || nodeType === 4 ) {\n\t\t\treturn elem.nodeValue;\n\t\t}\n\n\t\t// Do not include comment or processing instruction nodes\n\n\t\treturn ret;\n\t},\n\n\t// results is for internal usage only\n\tmakeArray: function( arr, results ) {\n\t\tvar ret = results || [];\n\n\t\tif ( arr != null ) {\n\t\t\tif ( isArrayLike( Object( arr ) ) ) {\n\t\t\t\tjQuery.merge( ret,\n\t\t\t\t\ttypeof arr === \"string\" ?\n\t\t\t\t\t\t[ arr ] : arr\n\t\t\t\t);\n\t\t\t} else {\n\t\t\t\tpush.call( ret, arr );\n\t\t\t}\n\t\t}\n\n\t\treturn ret;\n\t},\n\n\tinArray: function( elem, arr, i ) {\n\t\treturn arr == null ? -1 : indexOf.call( arr, elem, i );\n\t},\n\n\tisXMLDoc: function( elem ) {\n\t\tvar namespace = elem && elem.namespaceURI,\n\t\t\tdocElem = elem && ( elem.ownerDocument || elem ).documentElement;\n\n\t\t// Assume HTML when documentElement doesn't yet exist, such as inside\n\t\t// document fragments.\n\t\treturn !rhtmlSuffix.test( namespace || docElem && docElem.nodeName || \"HTML\" );\n\t},\n\n\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t// push.apply(_, arraylike) throws on ancient WebKit\n\tmerge: function( first, second ) {\n\t\tvar len = +second.length,\n\t\t\tj = 0,\n\t\t\ti = first.length;\n\n\t\tfor ( ; j < len; j++ ) {\n\t\t\tfirst[ i++ ] = second[ j ];\n\t\t}\n\n\t\tfirst.length = i;\n\n\t\treturn first;\n\t},\n\n\tgrep: function( elems, callback, invert ) {\n\t\tvar callbackInverse,\n\t\t\tmatches = [],\n\t\t\ti = 0,\n\t\t\tlength = elems.length,\n\t\t\tcallbackExpect = !invert;\n\n\t\t// Go through the array, only saving the items\n\t\t// that pass the validator function\n\t\tfor ( ; i < length; i++ ) {\n\t\t\tcallbackInverse = !callback( elems[ i ], i );\n\t\t\tif ( callbackInverse !== callbackExpect ) {\n\t\t\t\tmatches.push( elems[ i ] );\n\t\t\t}\n\t\t}\n\n\t\treturn matches;\n\t},\n\n\t// arg is for internal usage only\n\tmap: function( elems, callback, arg ) {\n\t\tvar length, value,\n\t\t\ti = 0,\n\t\t\tret = [];\n\n\t\t// Go through the array, translating each of the items to their new values\n\t\tif ( isArrayLike( elems ) ) {\n\t\t\tlength = elems.length;\n\t\t\tfor ( ; i < length; i++ ) {\n\t\t\t\tvalue = callback( elems[ i ], i, arg );\n\n\t\t\t\tif ( value != null ) {\n\t\t\t\t\tret.push( value );\n\t\t\t\t}\n\t\t\t}\n\n\t\t// Go through every key on the object,\n\t\t} else {\n\t\t\tfor ( i in elems ) {\n\t\t\t\tvalue = callback( elems[ i ], i, arg );\n\n\t\t\t\tif ( value != null ) {\n\t\t\t\t\tret.push( value );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Flatten any nested arrays\n\t\treturn flat( ret );\n\t},\n\n\t// A global GUID counter for objects\n\tguid: 1,\n\n\t// jQuery.support is not used in Core but other projects attach their\n\t// properties to it so it needs to exist.\n\tsupport: support\n} );\n\nif ( typeof Symbol === \"function\" ) {\n\tjQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ];\n}\n\n// Populate the class2type map\njQuery.each( \"Boolean Number String Function Array Date RegExp Object Error Symbol\".split( \" \" ),\n\tfunction( _i, name ) {\n\t\tclass2type[ \"[object \" + name + \"]\" ] = name.toLowerCase();\n\t} );\n\nfunction isArrayLike( obj ) {\n\n\t// Support: real iOS 8.2 only (not reproducible in simulator)\n\t// `in` check used to prevent JIT error (gh-2145)\n\t// hasOwn isn't used here due to false negatives\n\t// regarding Nodelist length in IE\n\tvar length = !!obj && \"length\" in obj && obj.length,\n\t\ttype = toType( obj );\n\n\tif ( isFunction( obj ) || isWindow( obj ) ) {\n\t\treturn false;\n\t}\n\n\treturn type === \"array\" || length === 0 ||\n\t\ttypeof length === \"number\" && length > 0 && ( length - 1 ) in obj;\n}\n\n\nfunction nodeName( elem, name ) {\n\n\treturn elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();\n\n}\nvar pop = arr.pop;\n\n\nvar sort = arr.sort;\n\n\nvar splice = arr.splice;\n\n\nvar whitespace = \"[\\\\x20\\\\t\\\\r\\\\n\\\\f]\";\n\n\nvar rtrimCSS = new RegExp(\n\t\"^\" + whitespace + \"+|((?:^|[^\\\\\\\\])(?:\\\\\\\\.)*)\" + whitespace + \"+$\",\n\t\"g\"\n);\n\n\n\n\n// Note: an element does not contain itself\njQuery.contains = function( a, b ) {\n\tvar bup = b && b.parentNode;\n\n\treturn a === bup || !!( bup && bup.nodeType === 1 && (\n\n\t\t// Support: IE 9 - 11+\n\t\t// IE doesn't have `contains` on SVG.\n\t\ta.contains ?\n\t\t\ta.contains( bup ) :\n\t\t\ta.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16\n\t) );\n};\n\n\n\n\n// CSS string/identifier serialization\n// https://drafts.csswg.org/cssom/#common-serializing-idioms\nvar rcssescape = /([\\0-\\x1f\\x7f]|^-?\\d)|^-$|[^\\x80-\\uFFFF\\w-]/g;\n\nfunction fcssescape( ch, asCodePoint ) {\n\tif ( asCodePoint ) {\n\n\t\t// U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER\n\t\tif ( ch === \"\\0\" ) {\n\t\t\treturn \"\\uFFFD\";\n\t\t}\n\n\t\t// Control characters and (dependent upon position) numbers get escaped as code points\n\t\treturn ch.slice( 0, -1 ) + \"\\\\\" + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + \" \";\n\t}\n\n\t// Other potentially-special ASCII characters get backslash-escaped\n\treturn \"\\\\\" + ch;\n}\n\njQuery.escapeSelector = function( sel ) {\n\treturn ( sel + \"\" ).replace( rcssescape, fcssescape );\n};\n\n\n\n\nvar preferredDoc = document,\n\tpushNative = push;\n\n( function() {\n\nvar i,\n\tExpr,\n\toutermostContext,\n\tsortInput,\n\thasDuplicate,\n\tpush = pushNative,\n\n\t// Local document vars\n\tdocument,\n\tdocumentElement,\n\tdocumentIsHTML,\n\trbuggyQSA,\n\tmatches,\n\n\t// Instance-specific data\n\texpando = jQuery.expando,\n\tdirruns = 0,\n\tdone = 0,\n\tclassCache = createCache(),\n\ttokenCache = createCache(),\n\tcompilerCache = createCache(),\n\tnonnativeSelectorCache = createCache(),\n\tsortOrder = function( a, b ) {\n\t\tif ( a === b ) {\n\t\t\thasDuplicate = true;\n\t\t}\n\t\treturn 0;\n\t},\n\n\tbooleans = \"checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|\" +\n\t\t\"loop|multiple|open|readonly|required|scoped\",\n\n\t// Regular expressions\n\n\t// https://www.w3.org/TR/css-syntax-3/#ident-token-diagram\n\tidentifier = \"(?:\\\\\\\\[\\\\da-fA-F]{1,6}\" + whitespace +\n\t\t\"?|\\\\\\\\[^\\\\r\\\\n\\\\f]|[\\\\w-]|[^\\0-\\\\x7f])+\",\n\n\t// Attribute selectors: https://www.w3.org/TR/selectors/#attribute-selectors\n\tattributes = \"\\\\[\" + whitespace + \"*(\" + identifier + \")(?:\" + whitespace +\n\n\t\t// Operator (capture 2)\n\t\t\"*([*^$|!~]?=)\" + whitespace +\n\n\t\t// \"Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]\"\n\t\t\"*(?:'((?:\\\\\\\\.|[^\\\\\\\\'])*)'|\\\"((?:\\\\\\\\.|[^\\\\\\\\\\\"])*)\\\"|(\" + identifier + \"))|)\" +\n\t\twhitespace + \"*\\\\]\",\n\n\tpseudos = \":(\" + identifier + \")(?:\\\\((\" +\n\n\t\t// To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:\n\t\t// 1. quoted (capture 3; capture 4 or capture 5)\n\t\t\"('((?:\\\\\\\\.|[^\\\\\\\\'])*)'|\\\"((?:\\\\\\\\.|[^\\\\\\\\\\\"])*)\\\")|\" +\n\n\t\t// 2. simple (capture 6)\n\t\t\"((?:\\\\\\\\.|[^\\\\\\\\()[\\\\]]|\" + attributes + \")*)|\" +\n\n\t\t// 3. anything else (capture 2)\n\t\t\".*\" +\n\t\t\")\\\\)|)\",\n\n\t// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter\n\trwhitespace = new RegExp( whitespace + \"+\", \"g\" ),\n\n\trcomma = new RegExp( \"^\" + whitespace + \"*,\" + whitespace + \"*\" ),\n\trleadingCombinator = new RegExp( \"^\" + whitespace + \"*([>+~]|\" + whitespace + \")\" +\n\t\twhitespace + \"*\" ),\n\trdescend = new RegExp( whitespace + \"|>\" ),\n\n\trpseudo = new RegExp( pseudos ),\n\tridentifier = new RegExp( \"^\" + identifier + \"$\" ),\n\n\tmatchExpr = {\n\t\tID: new RegExp( \"^#(\" + identifier + \")\" ),\n\t\tCLASS: new RegExp( \"^\\\\.(\" + identifier + \")\" ),\n\t\tTAG: new RegExp( \"^(\" + identifier + \"|[*])\" ),\n\t\tATTR: new RegExp( \"^\" + attributes ),\n\t\tPSEUDO: new RegExp( \"^\" + pseudos ),\n\t\tCHILD: new RegExp(\n\t\t\t\"^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\\\(\" +\n\t\t\t\twhitespace + \"*(even|odd|(([+-]|)(\\\\d*)n|)\" + whitespace + \"*(?:([+-]|)\" +\n\t\t\t\twhitespace + \"*(\\\\d+)|))\" + whitespace + \"*\\\\)|)\", \"i\" ),\n\t\tbool: new RegExp( \"^(?:\" + booleans + \")$\", \"i\" ),\n\n\t\t// For use in libraries implementing .is()\n\t\t// We use this for POS matching in `select`\n\t\tneedsContext: new RegExp( \"^\" + whitespace +\n\t\t\t\"*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\\\(\" + whitespace +\n\t\t\t\"*((?:-\\\\d)?\\\\d*)\" + whitespace + \"*\\\\)|)(?=[^-]|$)\", \"i\" )\n\t},\n\n\trinputs = /^(?:input|select|textarea|button)$/i,\n\trheader = /^h\\d$/i,\n\n\t// Easily-parseable/retrievable ID or TAG or CLASS selectors\n\trquickExpr = /^(?:#([\\w-]+)|(\\w+)|\\.([\\w-]+))$/,\n\n\trsibling = /[+~]/,\n\n\t// CSS escapes\n\t// https://www.w3.org/TR/CSS21/syndata.html#escaped-characters\n\trunescape = new RegExp( \"\\\\\\\\[\\\\da-fA-F]{1,6}\" + whitespace +\n\t\t\"?|\\\\\\\\([^\\\\r\\\\n\\\\f])\", \"g\" ),\n\tfunescape = function( escape, nonHex ) {\n\t\tvar high = \"0x\" + escape.slice( 1 ) - 0x10000;\n\n\t\tif ( nonHex ) {\n\n\t\t\t// Strip the backslash prefix from a non-hex escape sequence\n\t\t\treturn nonHex;\n\t\t}\n\n\t\t// Replace a hexadecimal escape sequence with the encoded Unicode code point\n\t\t// Support: IE <=11+\n\t\t// For values outside the Basic Multilingual Plane (BMP), manually construct a\n\t\t// surrogate pair\n\t\treturn high < 0 ?\n\t\t\tString.fromCharCode( high + 0x10000 ) :\n\t\t\tString.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );\n\t},\n\n\t// Used for iframes; see `setDocument`.\n\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t// Removing the function wrapper causes a \"Permission Denied\"\n\t// error in IE/Edge.\n\tunloadHandler = function() {\n\t\tsetDocument();\n\t},\n\n\tinDisabledFieldset = addCombinator(\n\t\tfunction( elem ) {\n\t\t\treturn elem.disabled === true && nodeName( elem, \"fieldset\" );\n\t\t},\n\t\t{ dir: \"parentNode\", next: \"legend\" }\n\t);\n\n// Support: IE <=9 only\n// Accessing document.activeElement can throw unexpectedly\n// https://bugs.jquery.com/ticket/13393\nfunction safeActiveElement() {\n\ttry {\n\t\treturn document.activeElement;\n\t} catch ( err ) { }\n}\n\n// Optimize for push.apply( _, NodeList )\ntry {\n\tpush.apply(\n\t\t( arr = slice.call( preferredDoc.childNodes ) ),\n\t\tpreferredDoc.childNodes\n\t);\n\n\t// Support: Android <=4.0\n\t// Detect silently failing push.apply\n\t// eslint-disable-next-line no-unused-expressions\n\tarr[ preferredDoc.childNodes.length ].nodeType;\n} catch ( e ) {\n\tpush = {\n\t\tapply: function( target, els ) {\n\t\t\tpushNative.apply( target, slice.call( els ) );\n\t\t},\n\t\tcall: function( target ) {\n\t\t\tpushNative.apply( target, slice.call( arguments, 1 ) );\n\t\t}\n\t};\n}\n\nfunction find( selector, context, results, seed ) {\n\tvar m, i, elem, nid, match, groups, newSelector,\n\t\tnewContext = context && context.ownerDocument,\n\n\t\t// nodeType defaults to 9, since context defaults to document\n\t\tnodeType = context ? context.nodeType : 9;\n\n\tresults = results || [];\n\n\t// Return early from calls with invalid selector or context\n\tif ( typeof selector !== \"string\" || !selector ||\n\t\tnodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) {\n\n\t\treturn results;\n\t}\n\n\t// Try to shortcut find operations (as opposed to filters) in HTML documents\n\tif ( !seed ) {\n\t\tsetDocument( context );\n\t\tcontext = context || document;\n\n\t\tif ( documentIsHTML ) {\n\n\t\t\t// If the selector is sufficiently simple, try using a \"get*By*\" DOM method\n\t\t\t// (excepting DocumentFragment context, where the methods don't exist)\n\t\t\tif ( nodeType !== 11 && ( match = rquickExpr.exec( selector ) ) ) {\n\n\t\t\t\t// ID selector\n\t\t\t\tif ( ( m = match[ 1 ] ) ) {\n\n\t\t\t\t\t// Document context\n\t\t\t\t\tif ( nodeType === 9 ) {\n\t\t\t\t\t\tif ( ( elem = context.getElementById( m ) ) ) {\n\n\t\t\t\t\t\t\t// Support: IE 9 only\n\t\t\t\t\t\t\t// getElementById can match elements by name instead of ID\n\t\t\t\t\t\t\tif ( elem.id === m ) {\n\t\t\t\t\t\t\t\tpush.call( results, elem );\n\t\t\t\t\t\t\t\treturn results;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\treturn results;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t// Element context\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// Support: IE 9 only\n\t\t\t\t\t\t// getElementById can match elements by name instead of ID\n\t\t\t\t\t\tif ( newContext && ( elem = newContext.getElementById( m ) ) &&\n\t\t\t\t\t\t\tfind.contains( context, elem ) &&\n\t\t\t\t\t\t\telem.id === m ) {\n\n\t\t\t\t\t\t\tpush.call( results, elem );\n\t\t\t\t\t\t\treturn results;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t// Type selector\n\t\t\t\t} else if ( match[ 2 ] ) {\n\t\t\t\t\tpush.apply( results, context.getElementsByTagName( selector ) );\n\t\t\t\t\treturn results;\n\n\t\t\t\t// Class selector\n\t\t\t\t} else if ( ( m = match[ 3 ] ) && context.getElementsByClassName ) {\n\t\t\t\t\tpush.apply( results, context.getElementsByClassName( m ) );\n\t\t\t\t\treturn results;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Take advantage of querySelectorAll\n\t\t\tif ( !nonnativeSelectorCache[ selector + \" \" ] &&\n\t\t\t\t( !rbuggyQSA || !rbuggyQSA.test( selector ) ) ) {\n\n\t\t\t\tnewSelector = selector;\n\t\t\t\tnewContext = context;\n\n\t\t\t\t// qSA considers elements outside a scoping root when evaluating child or\n\t\t\t\t// descendant combinators, which is not what we want.\n\t\t\t\t// In such cases, we work around the behavior by prefixing every selector in the\n\t\t\t\t// list with an ID selector referencing the scope context.\n\t\t\t\t// The technique has to be used as well when a leading combinator is used\n\t\t\t\t// as such selectors are not recognized by querySelectorAll.\n\t\t\t\t// Thanks to Andrew Dupont for this technique.\n\t\t\t\tif ( nodeType === 1 &&\n\t\t\t\t\t( rdescend.test( selector ) || rleadingCombinator.test( selector ) ) ) {\n\n\t\t\t\t\t// Expand context for sibling selectors\n\t\t\t\t\tnewContext = rsibling.test( selector ) && testContext( context.parentNode ) ||\n\t\t\t\t\t\tcontext;\n\n\t\t\t\t\t// We can use :scope instead of the ID hack if the browser\n\t\t\t\t\t// supports it & if we're not changing the context.\n\t\t\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when\n\t\t\t\t\t// strict-comparing two documents; shallow comparisons work.\n\t\t\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\t\t\tif ( newContext != context || !support.scope ) {\n\n\t\t\t\t\t\t// Capture the context ID, setting it first if necessary\n\t\t\t\t\t\tif ( ( nid = context.getAttribute( \"id\" ) ) ) {\n\t\t\t\t\t\t\tnid = jQuery.escapeSelector( nid );\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\tcontext.setAttribute( \"id\", ( nid = expando ) );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Prefix every selector in the list\n\t\t\t\t\tgroups = tokenize( selector );\n\t\t\t\t\ti = groups.length;\n\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\tgroups[ i ] = ( nid ? \"#\" + nid : \":scope\" ) + \" \" +\n\t\t\t\t\t\t\ttoSelector( groups[ i ] );\n\t\t\t\t\t}\n\t\t\t\t\tnewSelector = groups.join( \",\" );\n\t\t\t\t}\n\n\t\t\t\ttry {\n\t\t\t\t\tpush.apply( results,\n\t\t\t\t\t\tnewContext.querySelectorAll( newSelector )\n\t\t\t\t\t);\n\t\t\t\t\treturn results;\n\t\t\t\t} catch ( qsaError ) {\n\t\t\t\t\tnonnativeSelectorCache( selector, true );\n\t\t\t\t} finally {\n\t\t\t\t\tif ( nid === expando ) {\n\t\t\t\t\t\tcontext.removeAttribute( \"id\" );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// All others\n\treturn select( selector.replace( rtrimCSS, \"$1\" ), context, results, seed );\n}\n\n/**\n * Create key-value caches of limited size\n * @returns {function(string, object)} Returns the Object data after storing it on itself with\n *\tproperty name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)\n *\tdeleting the oldest entry\n */\nfunction createCache() {\n\tvar keys = [];\n\n\tfunction cache( key, value ) {\n\n\t\t// Use (key + \" \") to avoid collision with native prototype properties\n\t\t// (see https://github.com/jquery/sizzle/issues/157)\n\t\tif ( keys.push( key + \" \" ) > Expr.cacheLength ) {\n\n\t\t\t// Only keep the most recent entries\n\t\t\tdelete cache[ keys.shift() ];\n\t\t}\n\t\treturn ( cache[ key + \" \" ] = value );\n\t}\n\treturn cache;\n}\n\n/**\n * Mark a function for special use by jQuery selector module\n * @param {Function} fn The function to mark\n */\nfunction markFunction( fn ) {\n\tfn[ expando ] = true;\n\treturn fn;\n}\n\n/**\n * Support testing using an element\n * @param {Function} fn Passed the created element and returns a boolean result\n */\nfunction assert( fn ) {\n\tvar el = document.createElement( \"fieldset\" );\n\n\ttry {\n\t\treturn !!fn( el );\n\t} catch ( e ) {\n\t\treturn false;\n\t} finally {\n\n\t\t// Remove from its parent by default\n\t\tif ( el.parentNode ) {\n\t\t\tel.parentNode.removeChild( el );\n\t\t}\n\n\t\t// release memory in IE\n\t\tel = null;\n\t}\n}\n\n/**\n * Returns a function to use in pseudos for input types\n * @param {String} type\n */\nfunction createInputPseudo( type ) {\n\treturn function( elem ) {\n\t\treturn nodeName( elem, \"input\" ) && elem.type === type;\n\t};\n}\n\n/**\n * Returns a function to use in pseudos for buttons\n * @param {String} type\n */\nfunction createButtonPseudo( type ) {\n\treturn function( elem ) {\n\t\treturn ( nodeName( elem, \"input\" ) || nodeName( elem, \"button\" ) ) &&\n\t\t\telem.type === type;\n\t};\n}\n\n/**\n * Returns a function to use in pseudos for :enabled/:disabled\n * @param {Boolean} disabled true for :disabled; false for :enabled\n */\nfunction createDisabledPseudo( disabled ) {\n\n\t// Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable\n\treturn function( elem ) {\n\n\t\t// Only certain elements can match :enabled or :disabled\n\t\t// https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled\n\t\t// https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled\n\t\tif ( \"form\" in elem ) {\n\n\t\t\t// Check for inherited disabledness on relevant non-disabled elements:\n\t\t\t// * listed form-associated elements in a disabled fieldset\n\t\t\t//   https://html.spec.whatwg.org/multipage/forms.html#category-listed\n\t\t\t//   https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled\n\t\t\t// * option elements in a disabled optgroup\n\t\t\t//   https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled\n\t\t\t// All such elements have a \"form\" property.\n\t\t\tif ( elem.parentNode && elem.disabled === false ) {\n\n\t\t\t\t// Option elements defer to a parent optgroup if present\n\t\t\t\tif ( \"label\" in elem ) {\n\t\t\t\t\tif ( \"label\" in elem.parentNode ) {\n\t\t\t\t\t\treturn elem.parentNode.disabled === disabled;\n\t\t\t\t\t} else {\n\t\t\t\t\t\treturn elem.disabled === disabled;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Support: IE 6 - 11+\n\t\t\t\t// Use the isDisabled shortcut property to check for disabled fieldset ancestors\n\t\t\t\treturn elem.isDisabled === disabled ||\n\n\t\t\t\t\t// Where there is no isDisabled, check manually\n\t\t\t\t\telem.isDisabled !== !disabled &&\n\t\t\t\t\t\tinDisabledFieldset( elem ) === disabled;\n\t\t\t}\n\n\t\t\treturn elem.disabled === disabled;\n\n\t\t// Try to winnow out elements that can't be disabled before trusting the disabled property.\n\t\t// Some victims get caught in our net (label, legend, menu, track), but it shouldn't\n\t\t// even exist on them, let alone have a boolean value.\n\t\t} else if ( \"label\" in elem ) {\n\t\t\treturn elem.disabled === disabled;\n\t\t}\n\n\t\t// Remaining elements are neither :enabled nor :disabled\n\t\treturn false;\n\t};\n}\n\n/**\n * Returns a function to use in pseudos for positionals\n * @param {Function} fn\n */\nfunction createPositionalPseudo( fn ) {\n\treturn markFunction( function( argument ) {\n\t\targument = +argument;\n\t\treturn markFunction( function( seed, matches ) {\n\t\t\tvar j,\n\t\t\t\tmatchIndexes = fn( [], seed.length, argument ),\n\t\t\t\ti = matchIndexes.length;\n\n\t\t\t// Match elements found at the specified indexes\n\t\t\twhile ( i-- ) {\n\t\t\t\tif ( seed[ ( j = matchIndexes[ i ] ) ] ) {\n\t\t\t\t\tseed[ j ] = !( matches[ j ] = seed[ j ] );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t} );\n}\n\n/**\n * Checks a node for validity as a jQuery selector context\n * @param {Element|Object=} context\n * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value\n */\nfunction testContext( context ) {\n\treturn context && typeof context.getElementsByTagName !== \"undefined\" && context;\n}\n\n/**\n * Sets document-related variables once based on the current document\n * @param {Element|Object} [node] An element or document object to use to set the document\n * @returns {Object} Returns the current document\n */\nfunction setDocument( node ) {\n\tvar subWindow,\n\t\tdoc = node ? node.ownerDocument || node : preferredDoc;\n\n\t// Return early if doc is invalid or already selected\n\t// Support: IE 11+, Edge 17 - 18+\n\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t// two documents; shallow comparisons work.\n\t// eslint-disable-next-line eqeqeq\n\tif ( doc == document || doc.nodeType !== 9 || !doc.documentElement ) {\n\t\treturn document;\n\t}\n\n\t// Update global variables\n\tdocument = doc;\n\tdocumentElement = document.documentElement;\n\tdocumentIsHTML = !jQuery.isXMLDoc( document );\n\n\t// Support: iOS 7 only, IE 9 - 11+\n\t// Older browsers didn't support unprefixed `matches`.\n\tmatches = documentElement.matches ||\n\t\tdocumentElement.webkitMatchesSelector ||\n\t\tdocumentElement.msMatchesSelector;\n\n\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t// Accessing iframe documents after unload throws \"permission denied\" errors\n\t// (see trac-13936).\n\t// Limit the fix to IE & Edge Legacy; despite Edge 15+ implementing `matches`,\n\t// all IE 9+ and Edge Legacy versions implement `msMatchesSelector` as well.\n\tif ( documentElement.msMatchesSelector &&\n\n\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t// two documents; shallow comparisons work.\n\t\t// eslint-disable-next-line eqeqeq\n\t\tpreferredDoc != document &&\n\t\t( subWindow = document.defaultView ) && subWindow.top !== subWindow ) {\n\n\t\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t\tsubWindow.addEventListener( \"unload\", unloadHandler );\n\t}\n\n\t// Support: IE <10\n\t// Check if getElementById returns elements by name\n\t// The broken getElementById methods don't pick up programmatically-set names,\n\t// so use a roundabout getElementsByName test\n\tsupport.getById = assert( function( el ) {\n\t\tdocumentElement.appendChild( el ).id = jQuery.expando;\n\t\treturn !document.getElementsByName ||\n\t\t\t!document.getElementsByName( jQuery.expando ).length;\n\t} );\n\n\t// Support: IE 9 only\n\t// Check to see if it's possible to do matchesSelector\n\t// on a disconnected node.\n\tsupport.disconnectedMatch = assert( function( el ) {\n\t\treturn matches.call( el, \"*\" );\n\t} );\n\n\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t// IE/Edge don't support the :scope pseudo-class.\n\tsupport.scope = assert( function() {\n\t\treturn document.querySelectorAll( \":scope\" );\n\t} );\n\n\t// Support: Chrome 105 - 111 only, Safari 15.4 - 16.3 only\n\t// Make sure the `:has()` argument is parsed unforgivingly.\n\t// We include `*` in the test to detect buggy implementations that are\n\t// _selectively_ forgiving (specifically when the list includes at least\n\t// one valid selector).\n\t// Note that we treat complete lack of support for `:has()` as if it were\n\t// spec-compliant support, which is fine because use of `:has()` in such\n\t// environments will fail in the qSA path and fall back to jQuery traversal\n\t// anyway.\n\tsupport.cssHas = assert( function() {\n\t\ttry {\n\t\t\tdocument.querySelector( \":has(*,:jqfake)\" );\n\t\t\treturn false;\n\t\t} catch ( e ) {\n\t\t\treturn true;\n\t\t}\n\t} );\n\n\t// ID filter and find\n\tif ( support.getById ) {\n\t\tExpr.filter.ID = function( id ) {\n\t\t\tvar attrId = id.replace( runescape, funescape );\n\t\t\treturn function( elem ) {\n\t\t\t\treturn elem.getAttribute( \"id\" ) === attrId;\n\t\t\t};\n\t\t};\n\t\tExpr.find.ID = function( id, context ) {\n\t\t\tif ( typeof context.getElementById !== \"undefined\" && documentIsHTML ) {\n\t\t\t\tvar elem = context.getElementById( id );\n\t\t\t\treturn elem ? [ elem ] : [];\n\t\t\t}\n\t\t};\n\t} else {\n\t\tExpr.filter.ID =  function( id ) {\n\t\t\tvar attrId = id.replace( runescape, funescape );\n\t\t\treturn function( elem ) {\n\t\t\t\tvar node = typeof elem.getAttributeNode !== \"undefined\" &&\n\t\t\t\t\telem.getAttributeNode( \"id\" );\n\t\t\t\treturn node && node.value === attrId;\n\t\t\t};\n\t\t};\n\n\t\t// Support: IE 6 - 7 only\n\t\t// getElementById is not reliable as a find shortcut\n\t\tExpr.find.ID = function( id, context ) {\n\t\t\tif ( typeof context.getElementById !== \"undefined\" && documentIsHTML ) {\n\t\t\t\tvar node, i, elems,\n\t\t\t\t\telem = context.getElementById( id );\n\n\t\t\t\tif ( elem ) {\n\n\t\t\t\t\t// Verify the id attribute\n\t\t\t\t\tnode = elem.getAttributeNode( \"id\" );\n\t\t\t\t\tif ( node && node.value === id ) {\n\t\t\t\t\t\treturn [ elem ];\n\t\t\t\t\t}\n\n\t\t\t\t\t// Fall back on getElementsByName\n\t\t\t\t\telems = context.getElementsByName( id );\n\t\t\t\t\ti = 0;\n\t\t\t\t\twhile ( ( elem = elems[ i++ ] ) ) {\n\t\t\t\t\t\tnode = elem.getAttributeNode( \"id\" );\n\t\t\t\t\t\tif ( node && node.value === id ) {\n\t\t\t\t\t\t\treturn [ elem ];\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\treturn [];\n\t\t\t}\n\t\t};\n\t}\n\n\t// Tag\n\tExpr.find.TAG = function( tag, context ) {\n\t\tif ( typeof context.getElementsByTagName !== \"undefined\" ) {\n\t\t\treturn context.getElementsByTagName( tag );\n\n\t\t// DocumentFragment nodes don't have gEBTN\n\t\t} else {\n\t\t\treturn context.querySelectorAll( tag );\n\t\t}\n\t};\n\n\t// Class\n\tExpr.find.CLASS = function( className, context ) {\n\t\tif ( typeof context.getElementsByClassName !== \"undefined\" && documentIsHTML ) {\n\t\t\treturn context.getElementsByClassName( className );\n\t\t}\n\t};\n\n\t/* QSA/matchesSelector\n\t---------------------------------------------------------------------- */\n\n\t// QSA and matchesSelector support\n\n\trbuggyQSA = [];\n\n\t// Build QSA regex\n\t// Regex strategy adopted from Diego Perini\n\tassert( function( el ) {\n\n\t\tvar input;\n\n\t\tdocumentElement.appendChild( el ).innerHTML =\n\t\t\t\"<a id='\" + expando + \"' href='' disabled='disabled'></a>\" +\n\t\t\t\"<select id='\" + expando + \"-\\r\\\\' disabled='disabled'>\" +\n\t\t\t\"<option selected=''></option></select>\";\n\n\t\t// Support: iOS <=7 - 8 only\n\t\t// Boolean attributes and \"value\" are not treated correctly in some XML documents\n\t\tif ( !el.querySelectorAll( \"[selected]\" ).length ) {\n\t\t\trbuggyQSA.push( \"\\\\[\" + whitespace + \"*(?:value|\" + booleans + \")\" );\n\t\t}\n\n\t\t// Support: iOS <=7 - 8 only\n\t\tif ( !el.querySelectorAll( \"[id~=\" + expando + \"-]\" ).length ) {\n\t\t\trbuggyQSA.push( \"~=\" );\n\t\t}\n\n\t\t// Support: iOS 8 only\n\t\t// https://bugs.webkit.org/show_bug.cgi?id=136851\n\t\t// In-page `selector#id sibling-combinator selector` fails\n\t\tif ( !el.querySelectorAll( \"a#\" + expando + \"+*\" ).length ) {\n\t\t\trbuggyQSA.push( \".#.+[+~]\" );\n\t\t}\n\n\t\t// Support: Chrome <=105+, Firefox <=104+, Safari <=15.4+\n\t\t// In some of the document kinds, these selectors wouldn't work natively.\n\t\t// This is probably OK but for backwards compatibility we want to maintain\n\t\t// handling them through jQuery traversal in jQuery 3.x.\n\t\tif ( !el.querySelectorAll( \":checked\" ).length ) {\n\t\t\trbuggyQSA.push( \":checked\" );\n\t\t}\n\n\t\t// Support: Windows 8 Native Apps\n\t\t// The type and name attributes are restricted during .innerHTML assignment\n\t\tinput = document.createElement( \"input\" );\n\t\tinput.setAttribute( \"type\", \"hidden\" );\n\t\tel.appendChild( input ).setAttribute( \"name\", \"D\" );\n\n\t\t// Support: IE 9 - 11+\n\t\t// IE's :disabled selector does not pick up the children of disabled fieldsets\n\t\t// Support: Chrome <=105+, Firefox <=104+, Safari <=15.4+\n\t\t// In some of the document kinds, these selectors wouldn't work natively.\n\t\t// This is probably OK but for backwards compatibility we want to maintain\n\t\t// handling them through jQuery traversal in jQuery 3.x.\n\t\tdocumentElement.appendChild( el ).disabled = true;\n\t\tif ( el.querySelectorAll( \":disabled\" ).length !== 2 ) {\n\t\t\trbuggyQSA.push( \":enabled\", \":disabled\" );\n\t\t}\n\n\t\t// Support: IE 11+, Edge 15 - 18+\n\t\t// IE 11/Edge don't find elements on a `[name='']` query in some cases.\n\t\t// Adding a temporary attribute to the document before the selection works\n\t\t// around the issue.\n\t\t// Interestingly, IE 10 & older don't seem to have the issue.\n\t\tinput = document.createElement( \"input\" );\n\t\tinput.setAttribute( \"name\", \"\" );\n\t\tel.appendChild( input );\n\t\tif ( !el.querySelectorAll( \"[name='']\" ).length ) {\n\t\t\trbuggyQSA.push( \"\\\\[\" + whitespace + \"*name\" + whitespace + \"*=\" +\n\t\t\t\twhitespace + \"*(?:''|\\\"\\\")\" );\n\t\t}\n\t} );\n\n\tif ( !support.cssHas ) {\n\n\t\t// Support: Chrome 105 - 110+, Safari 15.4 - 16.3+\n\t\t// Our regular `try-catch` mechanism fails to detect natively-unsupported\n\t\t// pseudo-classes inside `:has()` (such as `:has(:contains(\"Foo\"))`)\n\t\t// in browsers that parse the `:has()` argument as a forgiving selector list.\n\t\t// https://drafts.csswg.org/selectors/#relational now requires the argument\n\t\t// to be parsed unforgivingly, but browsers have not yet fully adjusted.\n\t\trbuggyQSA.push( \":has\" );\n\t}\n\n\trbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join( \"|\" ) );\n\n\t/* Sorting\n\t---------------------------------------------------------------------- */\n\n\t// Document order sorting\n\tsortOrder = function( a, b ) {\n\n\t\t// Flag for duplicate removal\n\t\tif ( a === b ) {\n\t\t\thasDuplicate = true;\n\t\t\treturn 0;\n\t\t}\n\n\t\t// Sort on method existence if only one input has compareDocumentPosition\n\t\tvar compare = !a.compareDocumentPosition - !b.compareDocumentPosition;\n\t\tif ( compare ) {\n\t\t\treturn compare;\n\t\t}\n\n\t\t// Calculate position if both inputs belong to the same document\n\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t// two documents; shallow comparisons work.\n\t\t// eslint-disable-next-line eqeqeq\n\t\tcompare = ( a.ownerDocument || a ) == ( b.ownerDocument || b ) ?\n\t\t\ta.compareDocumentPosition( b ) :\n\n\t\t\t// Otherwise we know they are disconnected\n\t\t\t1;\n\n\t\t// Disconnected nodes\n\t\tif ( compare & 1 ||\n\t\t\t( !support.sortDetached && b.compareDocumentPosition( a ) === compare ) ) {\n\n\t\t\t// Choose the first element that is related to our preferred document\n\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t// two documents; shallow comparisons work.\n\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\tif ( a === document || a.ownerDocument == preferredDoc &&\n\t\t\t\tfind.contains( preferredDoc, a ) ) {\n\t\t\t\treturn -1;\n\t\t\t}\n\n\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t// two documents; shallow comparisons work.\n\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\tif ( b === document || b.ownerDocument == preferredDoc &&\n\t\t\t\tfind.contains( preferredDoc, b ) ) {\n\t\t\t\treturn 1;\n\t\t\t}\n\n\t\t\t// Maintain original order\n\t\t\treturn sortInput ?\n\t\t\t\t( indexOf.call( sortInput, a ) - indexOf.call( sortInput, b ) ) :\n\t\t\t\t0;\n\t\t}\n\n\t\treturn compare & 4 ? -1 : 1;\n\t};\n\n\treturn document;\n}\n\nfind.matches = function( expr, elements ) {\n\treturn find( expr, null, null, elements );\n};\n\nfind.matchesSelector = function( elem, expr ) {\n\tsetDocument( elem );\n\n\tif ( documentIsHTML &&\n\t\t!nonnativeSelectorCache[ expr + \" \" ] &&\n\t\t( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) {\n\n\t\ttry {\n\t\t\tvar ret = matches.call( elem, expr );\n\n\t\t\t// IE 9's matchesSelector returns false on disconnected nodes\n\t\t\tif ( ret || support.disconnectedMatch ||\n\n\t\t\t\t\t// As well, disconnected nodes are said to be in a document\n\t\t\t\t\t// fragment in IE 9\n\t\t\t\t\telem.document && elem.document.nodeType !== 11 ) {\n\t\t\t\treturn ret;\n\t\t\t}\n\t\t} catch ( e ) {\n\t\t\tnonnativeSelectorCache( expr, true );\n\t\t}\n\t}\n\n\treturn find( expr, document, null, [ elem ] ).length > 0;\n};\n\nfind.contains = function( context, elem ) {\n\n\t// Set document vars if needed\n\t// Support: IE 11+, Edge 17 - 18+\n\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t// two documents; shallow comparisons work.\n\t// eslint-disable-next-line eqeqeq\n\tif ( ( context.ownerDocument || context ) != document ) {\n\t\tsetDocument( context );\n\t}\n\treturn jQuery.contains( context, elem );\n};\n\n\nfind.attr = function( elem, name ) {\n\n\t// Set document vars if needed\n\t// Support: IE 11+, Edge 17 - 18+\n\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t// two documents; shallow comparisons work.\n\t// eslint-disable-next-line eqeqeq\n\tif ( ( elem.ownerDocument || elem ) != document ) {\n\t\tsetDocument( elem );\n\t}\n\n\tvar fn = Expr.attrHandle[ name.toLowerCase() ],\n\n\t\t// Don't get fooled by Object.prototype properties (see trac-13807)\n\t\tval = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?\n\t\t\tfn( elem, name, !documentIsHTML ) :\n\t\t\tundefined;\n\n\tif ( val !== undefined ) {\n\t\treturn val;\n\t}\n\n\treturn elem.getAttribute( name );\n};\n\nfind.error = function( msg ) {\n\tthrow new Error( \"Syntax error, unrecognized expression: \" + msg );\n};\n\n/**\n * Document sorting and removing duplicates\n * @param {ArrayLike} results\n */\njQuery.uniqueSort = function( results ) {\n\tvar elem,\n\t\tduplicates = [],\n\t\tj = 0,\n\t\ti = 0;\n\n\t// Unless we *know* we can detect duplicates, assume their presence\n\t//\n\t// Support: Android <=4.0+\n\t// Testing for detecting duplicates is unpredictable so instead assume we can't\n\t// depend on duplicate detection in all browsers without a stable sort.\n\thasDuplicate = !support.sortStable;\n\tsortInput = !support.sortStable && slice.call( results, 0 );\n\tsort.call( results, sortOrder );\n\n\tif ( hasDuplicate ) {\n\t\twhile ( ( elem = results[ i++ ] ) ) {\n\t\t\tif ( elem === results[ i ] ) {\n\t\t\t\tj = duplicates.push( i );\n\t\t\t}\n\t\t}\n\t\twhile ( j-- ) {\n\t\t\tsplice.call( results, duplicates[ j ], 1 );\n\t\t}\n\t}\n\n\t// Clear input after sorting to release objects\n\t// See https://github.com/jquery/sizzle/pull/225\n\tsortInput = null;\n\n\treturn results;\n};\n\njQuery.fn.uniqueSort = function() {\n\treturn this.pushStack( jQuery.uniqueSort( slice.apply( this ) ) );\n};\n\nExpr = jQuery.expr = {\n\n\t// Can be adjusted by the user\n\tcacheLength: 50,\n\n\tcreatePseudo: markFunction,\n\n\tmatch: matchExpr,\n\n\tattrHandle: {},\n\n\tfind: {},\n\n\trelative: {\n\t\t\">\": { dir: \"parentNode\", first: true },\n\t\t\" \": { dir: \"parentNode\" },\n\t\t\"+\": { dir: \"previousSibling\", first: true },\n\t\t\"~\": { dir: \"previousSibling\" }\n\t},\n\n\tpreFilter: {\n\t\tATTR: function( match ) {\n\t\t\tmatch[ 1 ] = match[ 1 ].replace( runescape, funescape );\n\n\t\t\t// Move the given value to match[3] whether quoted or unquoted\n\t\t\tmatch[ 3 ] = ( match[ 3 ] || match[ 4 ] || match[ 5 ] || \"\" )\n\t\t\t\t.replace( runescape, funescape );\n\n\t\t\tif ( match[ 2 ] === \"~=\" ) {\n\t\t\t\tmatch[ 3 ] = \" \" + match[ 3 ] + \" \";\n\t\t\t}\n\n\t\t\treturn match.slice( 0, 4 );\n\t\t},\n\n\t\tCHILD: function( match ) {\n\n\t\t\t/* matches from matchExpr[\"CHILD\"]\n\t\t\t\t1 type (only|nth|...)\n\t\t\t\t2 what (child|of-type)\n\t\t\t\t3 argument (even|odd|\\d*|\\d*n([+-]\\d+)?|...)\n\t\t\t\t4 xn-component of xn+y argument ([+-]?\\d*n|)\n\t\t\t\t5 sign of xn-component\n\t\t\t\t6 x of xn-component\n\t\t\t\t7 sign of y-component\n\t\t\t\t8 y of y-component\n\t\t\t*/\n\t\t\tmatch[ 1 ] = match[ 1 ].toLowerCase();\n\n\t\t\tif ( match[ 1 ].slice( 0, 3 ) === \"nth\" ) {\n\n\t\t\t\t// nth-* requires argument\n\t\t\t\tif ( !match[ 3 ] ) {\n\t\t\t\t\tfind.error( match[ 0 ] );\n\t\t\t\t}\n\n\t\t\t\t// numeric x and y parameters for Expr.filter.CHILD\n\t\t\t\t// remember that false/true cast respectively to 0/1\n\t\t\t\tmatch[ 4 ] = +( match[ 4 ] ?\n\t\t\t\t\tmatch[ 5 ] + ( match[ 6 ] || 1 ) :\n\t\t\t\t\t2 * ( match[ 3 ] === \"even\" || match[ 3 ] === \"odd\" )\n\t\t\t\t);\n\t\t\t\tmatch[ 5 ] = +( ( match[ 7 ] + match[ 8 ] ) || match[ 3 ] === \"odd\" );\n\n\t\t\t// other types prohibit arguments\n\t\t\t} else if ( match[ 3 ] ) {\n\t\t\t\tfind.error( match[ 0 ] );\n\t\t\t}\n\n\t\t\treturn match;\n\t\t},\n\n\t\tPSEUDO: function( match ) {\n\t\t\tvar excess,\n\t\t\t\tunquoted = !match[ 6 ] && match[ 2 ];\n\n\t\t\tif ( matchExpr.CHILD.test( match[ 0 ] ) ) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\t// Accept quoted arguments as-is\n\t\t\tif ( match[ 3 ] ) {\n\t\t\t\tmatch[ 2 ] = match[ 4 ] || match[ 5 ] || \"\";\n\n\t\t\t// Strip excess characters from unquoted arguments\n\t\t\t} else if ( unquoted && rpseudo.test( unquoted ) &&\n\n\t\t\t\t// Get excess from tokenize (recursively)\n\t\t\t\t( excess = tokenize( unquoted, true ) ) &&\n\n\t\t\t\t// advance to the next closing parenthesis\n\t\t\t\t( excess = unquoted.indexOf( \")\", unquoted.length - excess ) - unquoted.length ) ) {\n\n\t\t\t\t// excess is a negative index\n\t\t\t\tmatch[ 0 ] = match[ 0 ].slice( 0, excess );\n\t\t\t\tmatch[ 2 ] = unquoted.slice( 0, excess );\n\t\t\t}\n\n\t\t\t// Return only captures needed by the pseudo filter method (type and argument)\n\t\t\treturn match.slice( 0, 3 );\n\t\t}\n\t},\n\n\tfilter: {\n\n\t\tTAG: function( nodeNameSelector ) {\n\t\t\tvar expectedNodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();\n\t\t\treturn nodeNameSelector === \"*\" ?\n\t\t\t\tfunction() {\n\t\t\t\t\treturn true;\n\t\t\t\t} :\n\t\t\t\tfunction( elem ) {\n\t\t\t\t\treturn nodeName( elem, expectedNodeName );\n\t\t\t\t};\n\t\t},\n\n\t\tCLASS: function( className ) {\n\t\t\tvar pattern = classCache[ className + \" \" ];\n\n\t\t\treturn pattern ||\n\t\t\t\t( pattern = new RegExp( \"(^|\" + whitespace + \")\" + className +\n\t\t\t\t\t\"(\" + whitespace + \"|$)\" ) ) &&\n\t\t\t\tclassCache( className, function( elem ) {\n\t\t\t\t\treturn pattern.test(\n\t\t\t\t\t\ttypeof elem.className === \"string\" && elem.className ||\n\t\t\t\t\t\t\ttypeof elem.getAttribute !== \"undefined\" &&\n\t\t\t\t\t\t\t\telem.getAttribute( \"class\" ) ||\n\t\t\t\t\t\t\t\"\"\n\t\t\t\t\t);\n\t\t\t\t} );\n\t\t},\n\n\t\tATTR: function( name, operator, check ) {\n\t\t\treturn function( elem ) {\n\t\t\t\tvar result = find.attr( elem, name );\n\n\t\t\t\tif ( result == null ) {\n\t\t\t\t\treturn operator === \"!=\";\n\t\t\t\t}\n\t\t\t\tif ( !operator ) {\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\n\t\t\t\tresult += \"\";\n\n\t\t\t\tif ( operator === \"=\" ) {\n\t\t\t\t\treturn result === check;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"!=\" ) {\n\t\t\t\t\treturn result !== check;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"^=\" ) {\n\t\t\t\t\treturn check && result.indexOf( check ) === 0;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"*=\" ) {\n\t\t\t\t\treturn check && result.indexOf( check ) > -1;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"$=\" ) {\n\t\t\t\t\treturn check && result.slice( -check.length ) === check;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"~=\" ) {\n\t\t\t\t\treturn ( \" \" + result.replace( rwhitespace, \" \" ) + \" \" )\n\t\t\t\t\t\t.indexOf( check ) > -1;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"|=\" ) {\n\t\t\t\t\treturn result === check || result.slice( 0, check.length + 1 ) === check + \"-\";\n\t\t\t\t}\n\n\t\t\t\treturn false;\n\t\t\t};\n\t\t},\n\n\t\tCHILD: function( type, what, _argument, first, last ) {\n\t\t\tvar simple = type.slice( 0, 3 ) !== \"nth\",\n\t\t\t\tforward = type.slice( -4 ) !== \"last\",\n\t\t\t\tofType = what === \"of-type\";\n\n\t\t\treturn first === 1 && last === 0 ?\n\n\t\t\t\t// Shortcut for :nth-*(n)\n\t\t\t\tfunction( elem ) {\n\t\t\t\t\treturn !!elem.parentNode;\n\t\t\t\t} :\n\n\t\t\t\tfunction( elem, _context, xml ) {\n\t\t\t\t\tvar cache, outerCache, node, nodeIndex, start,\n\t\t\t\t\t\tdir = simple !== forward ? \"nextSibling\" : \"previousSibling\",\n\t\t\t\t\t\tparent = elem.parentNode,\n\t\t\t\t\t\tname = ofType && elem.nodeName.toLowerCase(),\n\t\t\t\t\t\tuseCache = !xml && !ofType,\n\t\t\t\t\t\tdiff = false;\n\n\t\t\t\t\tif ( parent ) {\n\n\t\t\t\t\t\t// :(first|last|only)-(child|of-type)\n\t\t\t\t\t\tif ( simple ) {\n\t\t\t\t\t\t\twhile ( dir ) {\n\t\t\t\t\t\t\t\tnode = elem;\n\t\t\t\t\t\t\t\twhile ( ( node = node[ dir ] ) ) {\n\t\t\t\t\t\t\t\t\tif ( ofType ?\n\t\t\t\t\t\t\t\t\t\tnodeName( node, name ) :\n\t\t\t\t\t\t\t\t\t\tnode.nodeType === 1 ) {\n\n\t\t\t\t\t\t\t\t\t\treturn false;\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t// Reverse direction for :only-* (if we haven't yet done so)\n\t\t\t\t\t\t\t\tstart = dir = type === \"only\" && !start && \"nextSibling\";\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\treturn true;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tstart = [ forward ? parent.firstChild : parent.lastChild ];\n\n\t\t\t\t\t\t// non-xml :nth-child(...) stores cache data on `parent`\n\t\t\t\t\t\tif ( forward && useCache ) {\n\n\t\t\t\t\t\t\t// Seek `elem` from a previously-cached index\n\t\t\t\t\t\t\touterCache = parent[ expando ] || ( parent[ expando ] = {} );\n\t\t\t\t\t\t\tcache = outerCache[ type ] || [];\n\t\t\t\t\t\t\tnodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];\n\t\t\t\t\t\t\tdiff = nodeIndex && cache[ 2 ];\n\t\t\t\t\t\t\tnode = nodeIndex && parent.childNodes[ nodeIndex ];\n\n\t\t\t\t\t\t\twhile ( ( node = ++nodeIndex && node && node[ dir ] ||\n\n\t\t\t\t\t\t\t\t// Fallback to seeking `elem` from the start\n\t\t\t\t\t\t\t\t( diff = nodeIndex = 0 ) || start.pop() ) ) {\n\n\t\t\t\t\t\t\t\t// When found, cache indexes on `parent` and break\n\t\t\t\t\t\t\t\tif ( node.nodeType === 1 && ++diff && node === elem ) {\n\t\t\t\t\t\t\t\t\touterCache[ type ] = [ dirruns, nodeIndex, diff ];\n\t\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Use previously-cached element index if available\n\t\t\t\t\t\t\tif ( useCache ) {\n\t\t\t\t\t\t\t\touterCache = elem[ expando ] || ( elem[ expando ] = {} );\n\t\t\t\t\t\t\t\tcache = outerCache[ type ] || [];\n\t\t\t\t\t\t\t\tnodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];\n\t\t\t\t\t\t\t\tdiff = nodeIndex;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t// xml :nth-child(...)\n\t\t\t\t\t\t\t// or :nth-last-child(...) or :nth(-last)?-of-type(...)\n\t\t\t\t\t\t\tif ( diff === false ) {\n\n\t\t\t\t\t\t\t\t// Use the same loop as above to seek `elem` from the start\n\t\t\t\t\t\t\t\twhile ( ( node = ++nodeIndex && node && node[ dir ] ||\n\t\t\t\t\t\t\t\t\t( diff = nodeIndex = 0 ) || start.pop() ) ) {\n\n\t\t\t\t\t\t\t\t\tif ( ( ofType ?\n\t\t\t\t\t\t\t\t\t\tnodeName( node, name ) :\n\t\t\t\t\t\t\t\t\t\tnode.nodeType === 1 ) &&\n\t\t\t\t\t\t\t\t\t\t++diff ) {\n\n\t\t\t\t\t\t\t\t\t\t// Cache the index of each encountered element\n\t\t\t\t\t\t\t\t\t\tif ( useCache ) {\n\t\t\t\t\t\t\t\t\t\t\touterCache = node[ expando ] ||\n\t\t\t\t\t\t\t\t\t\t\t\t( node[ expando ] = {} );\n\t\t\t\t\t\t\t\t\t\t\touterCache[ type ] = [ dirruns, diff ];\n\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\tif ( node === elem ) {\n\t\t\t\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// Incorporate the offset, then check against cycle size\n\t\t\t\t\t\tdiff -= last;\n\t\t\t\t\t\treturn diff === first || ( diff % first === 0 && diff / first >= 0 );\n\t\t\t\t\t}\n\t\t\t\t};\n\t\t},\n\n\t\tPSEUDO: function( pseudo, argument ) {\n\n\t\t\t// pseudo-class names are case-insensitive\n\t\t\t// https://www.w3.org/TR/selectors/#pseudo-classes\n\t\t\t// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters\n\t\t\t// Remember that setFilters inherits from pseudos\n\t\t\tvar args,\n\t\t\t\tfn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||\n\t\t\t\t\tfind.error( \"unsupported pseudo: \" + pseudo );\n\n\t\t\t// The user may use createPseudo to indicate that\n\t\t\t// arguments are needed to create the filter function\n\t\t\t// just as jQuery does\n\t\t\tif ( fn[ expando ] ) {\n\t\t\t\treturn fn( argument );\n\t\t\t}\n\n\t\t\t// But maintain support for old signatures\n\t\t\tif ( fn.length > 1 ) {\n\t\t\t\targs = [ pseudo, pseudo, \"\", argument ];\n\t\t\t\treturn Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?\n\t\t\t\t\tmarkFunction( function( seed, matches ) {\n\t\t\t\t\t\tvar idx,\n\t\t\t\t\t\t\tmatched = fn( seed, argument ),\n\t\t\t\t\t\t\ti = matched.length;\n\t\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\t\tidx = indexOf.call( seed, matched[ i ] );\n\t\t\t\t\t\t\tseed[ idx ] = !( matches[ idx ] = matched[ i ] );\n\t\t\t\t\t\t}\n\t\t\t\t\t} ) :\n\t\t\t\t\tfunction( elem ) {\n\t\t\t\t\t\treturn fn( elem, 0, args );\n\t\t\t\t\t};\n\t\t\t}\n\n\t\t\treturn fn;\n\t\t}\n\t},\n\n\tpseudos: {\n\n\t\t// Potentially complex pseudos\n\t\tnot: markFunction( function( selector ) {\n\n\t\t\t// Trim the selector passed to compile\n\t\t\t// to avoid treating leading and trailing\n\t\t\t// spaces as combinators\n\t\t\tvar input = [],\n\t\t\t\tresults = [],\n\t\t\t\tmatcher = compile( selector.replace( rtrimCSS, \"$1\" ) );\n\n\t\t\treturn matcher[ expando ] ?\n\t\t\t\tmarkFunction( function( seed, matches, _context, xml ) {\n\t\t\t\t\tvar elem,\n\t\t\t\t\t\tunmatched = matcher( seed, null, xml, [] ),\n\t\t\t\t\t\ti = seed.length;\n\n\t\t\t\t\t// Match elements unmatched by `matcher`\n\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\tif ( ( elem = unmatched[ i ] ) ) {\n\t\t\t\t\t\t\tseed[ i ] = !( matches[ i ] = elem );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} ) :\n\t\t\t\tfunction( elem, _context, xml ) {\n\t\t\t\t\tinput[ 0 ] = elem;\n\t\t\t\t\tmatcher( input, null, xml, results );\n\n\t\t\t\t\t// Don't keep the element\n\t\t\t\t\t// (see https://github.com/jquery/sizzle/issues/299)\n\t\t\t\t\tinput[ 0 ] = null;\n\t\t\t\t\treturn !results.pop();\n\t\t\t\t};\n\t\t} ),\n\n\t\thas: markFunction( function( selector ) {\n\t\t\treturn function( elem ) {\n\t\t\t\treturn find( selector, elem ).length > 0;\n\t\t\t};\n\t\t} ),\n\n\t\tcontains: markFunction( function( text ) {\n\t\t\ttext = text.replace( runescape, funescape );\n\t\t\treturn function( elem ) {\n\t\t\t\treturn ( elem.textContent || jQuery.text( elem ) ).indexOf( text ) > -1;\n\t\t\t};\n\t\t} ),\n\n\t\t// \"Whether an element is represented by a :lang() selector\n\t\t// is based solely on the element's language value\n\t\t// being equal to the identifier C,\n\t\t// or beginning with the identifier C immediately followed by \"-\".\n\t\t// The matching of C against the element's language value is performed case-insensitively.\n\t\t// The identifier C does not have to be a valid language name.\"\n\t\t// https://www.w3.org/TR/selectors/#lang-pseudo\n\t\tlang: markFunction( function( lang ) {\n\n\t\t\t// lang value must be a valid identifier\n\t\t\tif ( !ridentifier.test( lang || \"\" ) ) {\n\t\t\t\tfind.error( \"unsupported lang: \" + lang );\n\t\t\t}\n\t\t\tlang = lang.replace( runescape, funescape ).toLowerCase();\n\t\t\treturn function( elem ) {\n\t\t\t\tvar elemLang;\n\t\t\t\tdo {\n\t\t\t\t\tif ( ( elemLang = documentIsHTML ?\n\t\t\t\t\t\telem.lang :\n\t\t\t\t\t\telem.getAttribute( \"xml:lang\" ) || elem.getAttribute( \"lang\" ) ) ) {\n\n\t\t\t\t\t\telemLang = elemLang.toLowerCase();\n\t\t\t\t\t\treturn elemLang === lang || elemLang.indexOf( lang + \"-\" ) === 0;\n\t\t\t\t\t}\n\t\t\t\t} while ( ( elem = elem.parentNode ) && elem.nodeType === 1 );\n\t\t\t\treturn false;\n\t\t\t};\n\t\t} ),\n\n\t\t// Miscellaneous\n\t\ttarget: function( elem ) {\n\t\t\tvar hash = window.location && window.location.hash;\n\t\t\treturn hash && hash.slice( 1 ) === elem.id;\n\t\t},\n\n\t\troot: function( elem ) {\n\t\t\treturn elem === documentElement;\n\t\t},\n\n\t\tfocus: function( elem ) {\n\t\t\treturn elem === safeActiveElement() &&\n\t\t\t\tdocument.hasFocus() &&\n\t\t\t\t!!( elem.type || elem.href || ~elem.tabIndex );\n\t\t},\n\n\t\t// Boolean properties\n\t\tenabled: createDisabledPseudo( false ),\n\t\tdisabled: createDisabledPseudo( true ),\n\n\t\tchecked: function( elem ) {\n\n\t\t\t// In CSS3, :checked should return both checked and selected elements\n\t\t\t// https://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked\n\t\t\treturn ( nodeName( elem, \"input\" ) && !!elem.checked ) ||\n\t\t\t\t( nodeName( elem, \"option\" ) && !!elem.selected );\n\t\t},\n\n\t\tselected: function( elem ) {\n\n\t\t\t// Support: IE <=11+\n\t\t\t// Accessing the selectedIndex property\n\t\t\t// forces the browser to treat the default option as\n\t\t\t// selected when in an optgroup.\n\t\t\tif ( elem.parentNode ) {\n\t\t\t\t// eslint-disable-next-line no-unused-expressions\n\t\t\t\telem.parentNode.selectedIndex;\n\t\t\t}\n\n\t\t\treturn elem.selected === true;\n\t\t},\n\n\t\t// Contents\n\t\tempty: function( elem ) {\n\n\t\t\t// https://www.w3.org/TR/selectors/#empty-pseudo\n\t\t\t// :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),\n\t\t\t//   but not by others (comment: 8; processing instruction: 7; etc.)\n\t\t\t// nodeType < 6 works because attributes (2) do not appear as children\n\t\t\tfor ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {\n\t\t\t\tif ( elem.nodeType < 6 ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn true;\n\t\t},\n\n\t\tparent: function( elem ) {\n\t\t\treturn !Expr.pseudos.empty( elem );\n\t\t},\n\n\t\t// Element/input types\n\t\theader: function( elem ) {\n\t\t\treturn rheader.test( elem.nodeName );\n\t\t},\n\n\t\tinput: function( elem ) {\n\t\t\treturn rinputs.test( elem.nodeName );\n\t\t},\n\n\t\tbutton: function( elem ) {\n\t\t\treturn nodeName( elem, \"input\" ) && elem.type === \"button\" ||\n\t\t\t\tnodeName( elem, \"button\" );\n\t\t},\n\n\t\ttext: function( elem ) {\n\t\t\tvar attr;\n\t\t\treturn nodeName( elem, \"input\" ) && elem.type === \"text\" &&\n\n\t\t\t\t// Support: IE <10 only\n\t\t\t\t// New HTML5 attribute values (e.g., \"search\") appear\n\t\t\t\t// with elem.type === \"text\"\n\t\t\t\t( ( attr = elem.getAttribute( \"type\" ) ) == null ||\n\t\t\t\t\tattr.toLowerCase() === \"text\" );\n\t\t},\n\n\t\t// Position-in-collection\n\t\tfirst: createPositionalPseudo( function() {\n\t\t\treturn [ 0 ];\n\t\t} ),\n\n\t\tlast: createPositionalPseudo( function( _matchIndexes, length ) {\n\t\t\treturn [ length - 1 ];\n\t\t} ),\n\n\t\teq: createPositionalPseudo( function( _matchIndexes, length, argument ) {\n\t\t\treturn [ argument < 0 ? argument + length : argument ];\n\t\t} ),\n\n\t\teven: createPositionalPseudo( function( matchIndexes, length ) {\n\t\t\tvar i = 0;\n\t\t\tfor ( ; i < length; i += 2 ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} ),\n\n\t\todd: createPositionalPseudo( function( matchIndexes, length ) {\n\t\t\tvar i = 1;\n\t\t\tfor ( ; i < length; i += 2 ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} ),\n\n\t\tlt: createPositionalPseudo( function( matchIndexes, length, argument ) {\n\t\t\tvar i;\n\n\t\t\tif ( argument < 0 ) {\n\t\t\t\ti = argument + length;\n\t\t\t} else if ( argument > length ) {\n\t\t\t\ti = length;\n\t\t\t} else {\n\t\t\t\ti = argument;\n\t\t\t}\n\n\t\t\tfor ( ; --i >= 0; ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} ),\n\n\t\tgt: createPositionalPseudo( function( matchIndexes, length, argument ) {\n\t\t\tvar i = argument < 0 ? argument + length : argument;\n\t\t\tfor ( ; ++i < length; ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} )\n\t}\n};\n\nExpr.pseudos.nth = Expr.pseudos.eq;\n\n// Add button/input type pseudos\nfor ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {\n\tExpr.pseudos[ i ] = createInputPseudo( i );\n}\nfor ( i in { submit: true, reset: true } ) {\n\tExpr.pseudos[ i ] = createButtonPseudo( i );\n}\n\n// Easy API for creating new setFilters\nfunction setFilters() {}\nsetFilters.prototype = Expr.filters = Expr.pseudos;\nExpr.setFilters = new setFilters();\n\nfunction tokenize( selector, parseOnly ) {\n\tvar matched, match, tokens, type,\n\t\tsoFar, groups, preFilters,\n\t\tcached = tokenCache[ selector + \" \" ];\n\n\tif ( cached ) {\n\t\treturn parseOnly ? 0 : cached.slice( 0 );\n\t}\n\n\tsoFar = selector;\n\tgroups = [];\n\tpreFilters = Expr.preFilter;\n\n\twhile ( soFar ) {\n\n\t\t// Comma and first run\n\t\tif ( !matched || ( match = rcomma.exec( soFar ) ) ) {\n\t\t\tif ( match ) {\n\n\t\t\t\t// Don't consume trailing commas as valid\n\t\t\t\tsoFar = soFar.slice( match[ 0 ].length ) || soFar;\n\t\t\t}\n\t\t\tgroups.push( ( tokens = [] ) );\n\t\t}\n\n\t\tmatched = false;\n\n\t\t// Combinators\n\t\tif ( ( match = rleadingCombinator.exec( soFar ) ) ) {\n\t\t\tmatched = match.shift();\n\t\t\ttokens.push( {\n\t\t\t\tvalue: matched,\n\n\t\t\t\t// Cast descendant combinators to space\n\t\t\t\ttype: match[ 0 ].replace( rtrimCSS, \" \" )\n\t\t\t} );\n\t\t\tsoFar = soFar.slice( matched.length );\n\t\t}\n\n\t\t// Filters\n\t\tfor ( type in Expr.filter ) {\n\t\t\tif ( ( match = matchExpr[ type ].exec( soFar ) ) && ( !preFilters[ type ] ||\n\t\t\t\t( match = preFilters[ type ]( match ) ) ) ) {\n\t\t\t\tmatched = match.shift();\n\t\t\t\ttokens.push( {\n\t\t\t\t\tvalue: matched,\n\t\t\t\t\ttype: type,\n\t\t\t\t\tmatches: match\n\t\t\t\t} );\n\t\t\t\tsoFar = soFar.slice( matched.length );\n\t\t\t}\n\t\t}\n\n\t\tif ( !matched ) {\n\t\t\tbreak;\n\t\t}\n\t}\n\n\t// Return the length of the invalid excess\n\t// if we're just parsing\n\t// Otherwise, throw an error or return tokens\n\tif ( parseOnly ) {\n\t\treturn soFar.length;\n\t}\n\n\treturn soFar ?\n\t\tfind.error( selector ) :\n\n\t\t// Cache the tokens\n\t\ttokenCache( selector, groups ).slice( 0 );\n}\n\nfunction toSelector( tokens ) {\n\tvar i = 0,\n\t\tlen = tokens.length,\n\t\tselector = \"\";\n\tfor ( ; i < len; i++ ) {\n\t\tselector += tokens[ i ].value;\n\t}\n\treturn selector;\n}\n\nfunction addCombinator( matcher, combinator, base ) {\n\tvar dir = combinator.dir,\n\t\tskip = combinator.next,\n\t\tkey = skip || dir,\n\t\tcheckNonElements = base && key === \"parentNode\",\n\t\tdoneName = done++;\n\n\treturn combinator.first ?\n\n\t\t// Check against closest ancestor/preceding element\n\t\tfunction( elem, context, xml ) {\n\t\t\twhile ( ( elem = elem[ dir ] ) ) {\n\t\t\t\tif ( elem.nodeType === 1 || checkNonElements ) {\n\t\t\t\t\treturn matcher( elem, context, xml );\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn false;\n\t\t} :\n\n\t\t// Check against all ancestor/preceding elements\n\t\tfunction( elem, context, xml ) {\n\t\t\tvar oldCache, outerCache,\n\t\t\t\tnewCache = [ dirruns, doneName ];\n\n\t\t\t// We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching\n\t\t\tif ( xml ) {\n\t\t\t\twhile ( ( elem = elem[ dir ] ) ) {\n\t\t\t\t\tif ( elem.nodeType === 1 || checkNonElements ) {\n\t\t\t\t\t\tif ( matcher( elem, context, xml ) ) {\n\t\t\t\t\t\t\treturn true;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\twhile ( ( elem = elem[ dir ] ) ) {\n\t\t\t\t\tif ( elem.nodeType === 1 || checkNonElements ) {\n\t\t\t\t\t\touterCache = elem[ expando ] || ( elem[ expando ] = {} );\n\n\t\t\t\t\t\tif ( skip && nodeName( elem, skip ) ) {\n\t\t\t\t\t\t\telem = elem[ dir ] || elem;\n\t\t\t\t\t\t} else if ( ( oldCache = outerCache[ key ] ) &&\n\t\t\t\t\t\t\toldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) {\n\n\t\t\t\t\t\t\t// Assign to newCache so results back-propagate to previous elements\n\t\t\t\t\t\t\treturn ( newCache[ 2 ] = oldCache[ 2 ] );\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Reuse newcache so results back-propagate to previous elements\n\t\t\t\t\t\t\touterCache[ key ] = newCache;\n\n\t\t\t\t\t\t\t// A match means we're done; a fail means we have to keep checking\n\t\t\t\t\t\t\tif ( ( newCache[ 2 ] = matcher( elem, context, xml ) ) ) {\n\t\t\t\t\t\t\t\treturn true;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn false;\n\t\t};\n}\n\nfunction elementMatcher( matchers ) {\n\treturn matchers.length > 1 ?\n\t\tfunction( elem, context, xml ) {\n\t\t\tvar i = matchers.length;\n\t\t\twhile ( i-- ) {\n\t\t\t\tif ( !matchers[ i ]( elem, context, xml ) ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn true;\n\t\t} :\n\t\tmatchers[ 0 ];\n}\n\nfunction multipleContexts( selector, contexts, results ) {\n\tvar i = 0,\n\t\tlen = contexts.length;\n\tfor ( ; i < len; i++ ) {\n\t\tfind( selector, contexts[ i ], results );\n\t}\n\treturn results;\n}\n\nfunction condense( unmatched, map, filter, context, xml ) {\n\tvar elem,\n\t\tnewUnmatched = [],\n\t\ti = 0,\n\t\tlen = unmatched.length,\n\t\tmapped = map != null;\n\n\tfor ( ; i < len; i++ ) {\n\t\tif ( ( elem = unmatched[ i ] ) ) {\n\t\t\tif ( !filter || filter( elem, context, xml ) ) {\n\t\t\t\tnewUnmatched.push( elem );\n\t\t\t\tif ( mapped ) {\n\t\t\t\t\tmap.push( i );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn newUnmatched;\n}\n\nfunction setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {\n\tif ( postFilter && !postFilter[ expando ] ) {\n\t\tpostFilter = setMatcher( postFilter );\n\t}\n\tif ( postFinder && !postFinder[ expando ] ) {\n\t\tpostFinder = setMatcher( postFinder, postSelector );\n\t}\n\treturn markFunction( function( seed, results, context, xml ) {\n\t\tvar temp, i, elem, matcherOut,\n\t\t\tpreMap = [],\n\t\t\tpostMap = [],\n\t\t\tpreexisting = results.length,\n\n\t\t\t// Get initial elements from seed or context\n\t\t\telems = seed ||\n\t\t\t\tmultipleContexts( selector || \"*\",\n\t\t\t\t\tcontext.nodeType ? [ context ] : context, [] ),\n\n\t\t\t// Prefilter to get matcher input, preserving a map for seed-results synchronization\n\t\t\tmatcherIn = preFilter && ( seed || !selector ) ?\n\t\t\t\tcondense( elems, preMap, preFilter, context, xml ) :\n\t\t\t\telems;\n\n\t\tif ( matcher ) {\n\n\t\t\t// If we have a postFinder, or filtered seed, or non-seed postFilter\n\t\t\t// or preexisting results,\n\t\t\tmatcherOut = postFinder || ( seed ? preFilter : preexisting || postFilter ) ?\n\n\t\t\t\t// ...intermediate processing is necessary\n\t\t\t\t[] :\n\n\t\t\t\t// ...otherwise use results directly\n\t\t\t\tresults;\n\n\t\t\t// Find primary matches\n\t\t\tmatcher( matcherIn, matcherOut, context, xml );\n\t\t} else {\n\t\t\tmatcherOut = matcherIn;\n\t\t}\n\n\t\t// Apply postFilter\n\t\tif ( postFilter ) {\n\t\t\ttemp = condense( matcherOut, postMap );\n\t\t\tpostFilter( temp, [], context, xml );\n\n\t\t\t// Un-match failing elements by moving them back to matcherIn\n\t\t\ti = temp.length;\n\t\t\twhile ( i-- ) {\n\t\t\t\tif ( ( elem = temp[ i ] ) ) {\n\t\t\t\t\tmatcherOut[ postMap[ i ] ] = !( matcherIn[ postMap[ i ] ] = elem );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tif ( seed ) {\n\t\t\tif ( postFinder || preFilter ) {\n\t\t\t\tif ( postFinder ) {\n\n\t\t\t\t\t// Get the final matcherOut by condensing this intermediate into postFinder contexts\n\t\t\t\t\ttemp = [];\n\t\t\t\t\ti = matcherOut.length;\n\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\tif ( ( elem = matcherOut[ i ] ) ) {\n\n\t\t\t\t\t\t\t// Restore matcherIn since elem is not yet a final match\n\t\t\t\t\t\t\ttemp.push( ( matcherIn[ i ] = elem ) );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tpostFinder( null, ( matcherOut = [] ), temp, xml );\n\t\t\t\t}\n\n\t\t\t\t// Move matched elements from seed to results to keep them synchronized\n\t\t\t\ti = matcherOut.length;\n\t\t\t\twhile ( i-- ) {\n\t\t\t\t\tif ( ( elem = matcherOut[ i ] ) &&\n\t\t\t\t\t\t( temp = postFinder ? indexOf.call( seed, elem ) : preMap[ i ] ) > -1 ) {\n\n\t\t\t\t\t\tseed[ temp ] = !( results[ temp ] = elem );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t// Add elements to results, through postFinder if defined\n\t\t} else {\n\t\t\tmatcherOut = condense(\n\t\t\t\tmatcherOut === results ?\n\t\t\t\t\tmatcherOut.splice( preexisting, matcherOut.length ) :\n\t\t\t\t\tmatcherOut\n\t\t\t);\n\t\t\tif ( postFinder ) {\n\t\t\t\tpostFinder( null, results, matcherOut, xml );\n\t\t\t} else {\n\t\t\t\tpush.apply( results, matcherOut );\n\t\t\t}\n\t\t}\n\t} );\n}\n\nfunction matcherFromTokens( tokens ) {\n\tvar checkContext, matcher, j,\n\t\tlen = tokens.length,\n\t\tleadingRelative = Expr.relative[ tokens[ 0 ].type ],\n\t\timplicitRelative = leadingRelative || Expr.relative[ \" \" ],\n\t\ti = leadingRelative ? 1 : 0,\n\n\t\t// The foundational matcher ensures that elements are reachable from top-level context(s)\n\t\tmatchContext = addCombinator( function( elem ) {\n\t\t\treturn elem === checkContext;\n\t\t}, implicitRelative, true ),\n\t\tmatchAnyContext = addCombinator( function( elem ) {\n\t\t\treturn indexOf.call( checkContext, elem ) > -1;\n\t\t}, implicitRelative, true ),\n\t\tmatchers = [ function( elem, context, xml ) {\n\n\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t// two documents; shallow comparisons work.\n\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\tvar ret = ( !leadingRelative && ( xml || context != outermostContext ) ) || (\n\t\t\t\t( checkContext = context ).nodeType ?\n\t\t\t\t\tmatchContext( elem, context, xml ) :\n\t\t\t\t\tmatchAnyContext( elem, context, xml ) );\n\n\t\t\t// Avoid hanging onto element\n\t\t\t// (see https://github.com/jquery/sizzle/issues/299)\n\t\t\tcheckContext = null;\n\t\t\treturn ret;\n\t\t} ];\n\n\tfor ( ; i < len; i++ ) {\n\t\tif ( ( matcher = Expr.relative[ tokens[ i ].type ] ) ) {\n\t\t\tmatchers = [ addCombinator( elementMatcher( matchers ), matcher ) ];\n\t\t} else {\n\t\t\tmatcher = Expr.filter[ tokens[ i ].type ].apply( null, tokens[ i ].matches );\n\n\t\t\t// Return special upon seeing a positional matcher\n\t\t\tif ( matcher[ expando ] ) {\n\n\t\t\t\t// Find the next relative operator (if any) for proper handling\n\t\t\t\tj = ++i;\n\t\t\t\tfor ( ; j < len; j++ ) {\n\t\t\t\t\tif ( Expr.relative[ tokens[ j ].type ] ) {\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\treturn setMatcher(\n\t\t\t\t\ti > 1 && elementMatcher( matchers ),\n\t\t\t\t\ti > 1 && toSelector(\n\n\t\t\t\t\t\t// If the preceding token was a descendant combinator, insert an implicit any-element `*`\n\t\t\t\t\t\ttokens.slice( 0, i - 1 )\n\t\t\t\t\t\t\t.concat( { value: tokens[ i - 2 ].type === \" \" ? \"*\" : \"\" } )\n\t\t\t\t\t).replace( rtrimCSS, \"$1\" ),\n\t\t\t\t\tmatcher,\n\t\t\t\t\ti < j && matcherFromTokens( tokens.slice( i, j ) ),\n\t\t\t\t\tj < len && matcherFromTokens( ( tokens = tokens.slice( j ) ) ),\n\t\t\t\t\tj < len && toSelector( tokens )\n\t\t\t\t);\n\t\t\t}\n\t\t\tmatchers.push( matcher );\n\t\t}\n\t}\n\n\treturn elementMatcher( matchers );\n}\n\nfunction matcherFromGroupMatchers( elementMatchers, setMatchers ) {\n\tvar bySet = setMatchers.length > 0,\n\t\tbyElement = elementMatchers.length > 0,\n\t\tsuperMatcher = function( seed, context, xml, results, outermost ) {\n\t\t\tvar elem, j, matcher,\n\t\t\t\tmatchedCount = 0,\n\t\t\t\ti = \"0\",\n\t\t\t\tunmatched = seed && [],\n\t\t\t\tsetMatched = [],\n\t\t\t\tcontextBackup = outermostContext,\n\n\t\t\t\t// We must always have either seed elements or outermost context\n\t\t\t\telems = seed || byElement && Expr.find.TAG( \"*\", outermost ),\n\n\t\t\t\t// Use integer dirruns iff this is the outermost matcher\n\t\t\t\tdirrunsUnique = ( dirruns += contextBackup == null ? 1 : Math.random() || 0.1 ),\n\t\t\t\tlen = elems.length;\n\n\t\t\tif ( outermost ) {\n\n\t\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t\t// two documents; shallow comparisons work.\n\t\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\t\toutermostContext = context == document || context || outermost;\n\t\t\t}\n\n\t\t\t// Add elements passing elementMatchers directly to results\n\t\t\t// Support: iOS <=7 - 9 only\n\t\t\t// Tolerate NodeList properties (IE: \"length\"; Safari: <number>) matching\n\t\t\t// elements by id. (see trac-14142)\n\t\t\tfor ( ; i !== len && ( elem = elems[ i ] ) != null; i++ ) {\n\t\t\t\tif ( byElement && elem ) {\n\t\t\t\t\tj = 0;\n\n\t\t\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t\t\t// two documents; shallow comparisons work.\n\t\t\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\t\t\tif ( !context && elem.ownerDocument != document ) {\n\t\t\t\t\t\tsetDocument( elem );\n\t\t\t\t\t\txml = !documentIsHTML;\n\t\t\t\t\t}\n\t\t\t\t\twhile ( ( matcher = elementMatchers[ j++ ] ) ) {\n\t\t\t\t\t\tif ( matcher( elem, context || document, xml ) ) {\n\t\t\t\t\t\t\tpush.call( results, elem );\n\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tif ( outermost ) {\n\t\t\t\t\t\tdirruns = dirrunsUnique;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Track unmatched elements for set filters\n\t\t\t\tif ( bySet ) {\n\n\t\t\t\t\t// They will have gone through all possible matchers\n\t\t\t\t\tif ( ( elem = !matcher && elem ) ) {\n\t\t\t\t\t\tmatchedCount--;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Lengthen the array for every element, matched or not\n\t\t\t\t\tif ( seed ) {\n\t\t\t\t\t\tunmatched.push( elem );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// `i` is now the count of elements visited above, and adding it to `matchedCount`\n\t\t\t// makes the latter nonnegative.\n\t\t\tmatchedCount += i;\n\n\t\t\t// Apply set filters to unmatched elements\n\t\t\t// NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`\n\t\t\t// equals `i`), unless we didn't visit _any_ elements in the above loop because we have\n\t\t\t// no element matchers and no seed.\n\t\t\t// Incrementing an initially-string \"0\" `i` allows `i` to remain a string only in that\n\t\t\t// case, which will result in a \"00\" `matchedCount` that differs from `i` but is also\n\t\t\t// numerically zero.\n\t\t\tif ( bySet && i !== matchedCount ) {\n\t\t\t\tj = 0;\n\t\t\t\twhile ( ( matcher = setMatchers[ j++ ] ) ) {\n\t\t\t\t\tmatcher( unmatched, setMatched, context, xml );\n\t\t\t\t}\n\n\t\t\t\tif ( seed ) {\n\n\t\t\t\t\t// Reintegrate element matches to eliminate the need for sorting\n\t\t\t\t\tif ( matchedCount > 0 ) {\n\t\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\t\tif ( !( unmatched[ i ] || setMatched[ i ] ) ) {\n\t\t\t\t\t\t\t\tsetMatched[ i ] = pop.call( results );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Discard index placeholder values to get only actual matches\n\t\t\t\t\tsetMatched = condense( setMatched );\n\t\t\t\t}\n\n\t\t\t\t// Add matches to results\n\t\t\t\tpush.apply( results, setMatched );\n\n\t\t\t\t// Seedless set matches succeeding multiple successful matchers stipulate sorting\n\t\t\t\tif ( outermost && !seed && setMatched.length > 0 &&\n\t\t\t\t\t( matchedCount + setMatchers.length ) > 1 ) {\n\n\t\t\t\t\tjQuery.uniqueSort( results );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Override manipulation of globals by nested matchers\n\t\t\tif ( outermost ) {\n\t\t\t\tdirruns = dirrunsUnique;\n\t\t\t\toutermostContext = contextBackup;\n\t\t\t}\n\n\t\t\treturn unmatched;\n\t\t};\n\n\treturn bySet ?\n\t\tmarkFunction( superMatcher ) :\n\t\tsuperMatcher;\n}\n\nfunction compile( selector, match /* Internal Use Only */ ) {\n\tvar i,\n\t\tsetMatchers = [],\n\t\telementMatchers = [],\n\t\tcached = compilerCache[ selector + \" \" ];\n\n\tif ( !cached ) {\n\n\t\t// Generate a function of recursive functions that can be used to check each element\n\t\tif ( !match ) {\n\t\t\tmatch = tokenize( selector );\n\t\t}\n\t\ti = match.length;\n\t\twhile ( i-- ) {\n\t\t\tcached = matcherFromTokens( match[ i ] );\n\t\t\tif ( cached[ expando ] ) {\n\t\t\t\tsetMatchers.push( cached );\n\t\t\t} else {\n\t\t\t\telementMatchers.push( cached );\n\t\t\t}\n\t\t}\n\n\t\t// Cache the compiled function\n\t\tcached = compilerCache( selector,\n\t\t\tmatcherFromGroupMatchers( elementMatchers, setMatchers ) );\n\n\t\t// Save selector and tokenization\n\t\tcached.selector = selector;\n\t}\n\treturn cached;\n}\n\n/**\n * A low-level selection function that works with jQuery's compiled\n *  selector functions\n * @param {String|Function} selector A selector or a pre-compiled\n *  selector function built with jQuery selector compile\n * @param {Element} context\n * @param {Array} [results]\n * @param {Array} [seed] A set of elements to match against\n */\nfunction select( selector, context, results, seed ) {\n\tvar i, tokens, token, type, find,\n\t\tcompiled = typeof selector === \"function\" && selector,\n\t\tmatch = !seed && tokenize( ( selector = compiled.selector || selector ) );\n\n\tresults = results || [];\n\n\t// Try to minimize operations if there is only one selector in the list and no seed\n\t// (the latter of which guarantees us context)\n\tif ( match.length === 1 ) {\n\n\t\t// Reduce context if the leading compound selector is an ID\n\t\ttokens = match[ 0 ] = match[ 0 ].slice( 0 );\n\t\tif ( tokens.length > 2 && ( token = tokens[ 0 ] ).type === \"ID\" &&\n\t\t\t\tcontext.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[ 1 ].type ] ) {\n\n\t\t\tcontext = ( Expr.find.ID(\n\t\t\t\ttoken.matches[ 0 ].replace( runescape, funescape ),\n\t\t\t\tcontext\n\t\t\t) || [] )[ 0 ];\n\t\t\tif ( !context ) {\n\t\t\t\treturn results;\n\n\t\t\t// Precompiled matchers will still verify ancestry, so step up a level\n\t\t\t} else if ( compiled ) {\n\t\t\t\tcontext = context.parentNode;\n\t\t\t}\n\n\t\t\tselector = selector.slice( tokens.shift().value.length );\n\t\t}\n\n\t\t// Fetch a seed set for right-to-left matching\n\t\ti = matchExpr.needsContext.test( selector ) ? 0 : tokens.length;\n\t\twhile ( i-- ) {\n\t\t\ttoken = tokens[ i ];\n\n\t\t\t// Abort if we hit a combinator\n\t\t\tif ( Expr.relative[ ( type = token.type ) ] ) {\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tif ( ( find = Expr.find[ type ] ) ) {\n\n\t\t\t\t// Search, expanding context for leading sibling combinators\n\t\t\t\tif ( ( seed = find(\n\t\t\t\t\ttoken.matches[ 0 ].replace( runescape, funescape ),\n\t\t\t\t\trsibling.test( tokens[ 0 ].type ) &&\n\t\t\t\t\t\ttestContext( context.parentNode ) || context\n\t\t\t\t) ) ) {\n\n\t\t\t\t\t// If seed is empty or no tokens remain, we can return early\n\t\t\t\t\ttokens.splice( i, 1 );\n\t\t\t\t\tselector = seed.length && toSelector( tokens );\n\t\t\t\t\tif ( !selector ) {\n\t\t\t\t\t\tpush.apply( results, seed );\n\t\t\t\t\t\treturn results;\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// Compile and execute a filtering function if one is not provided\n\t// Provide `match` to avoid retokenization if we modified the selector above\n\t( compiled || compile( selector, match ) )(\n\t\tseed,\n\t\tcontext,\n\t\t!documentIsHTML,\n\t\tresults,\n\t\t!context || rsibling.test( selector ) && testContext( context.parentNode ) || context\n\t);\n\treturn results;\n}\n\n// One-time assignments\n\n// Support: Android <=4.0 - 4.1+\n// Sort stability\nsupport.sortStable = expando.split( \"\" ).sort( sortOrder ).join( \"\" ) === expando;\n\n// Initialize against the default document\nsetDocument();\n\n// Support: Android <=4.0 - 4.1+\n// Detached nodes confoundingly follow *each other*\nsupport.sortDetached = assert( function( el ) {\n\n\t// Should return 1, but returns 4 (following)\n\treturn el.compareDocumentPosition( document.createElement( \"fieldset\" ) ) & 1;\n} );\n\njQuery.find = find;\n\n// Deprecated\njQuery.expr[ \":\" ] = jQuery.expr.pseudos;\njQuery.unique = jQuery.uniqueSort;\n\n// These have always been private, but they used to be documented as part of\n// Sizzle so let's maintain them for now for backwards compatibility purposes.\nfind.compile = compile;\nfind.select = select;\nfind.setDocument = setDocument;\nfind.tokenize = tokenize;\n\nfind.escape = jQuery.escapeSelector;\nfind.getText = jQuery.text;\nfind.isXML = jQuery.isXMLDoc;\nfind.selectors = jQuery.expr;\nfind.support = jQuery.support;\nfind.uniqueSort = jQuery.uniqueSort;\n\n\t/* eslint-enable */\n\n} )();\n\n\nvar dir = function( elem, dir, until ) {\n\tvar matched = [],\n\t\ttruncate = until !== undefined;\n\n\twhile ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) {\n\t\tif ( elem.nodeType === 1 ) {\n\t\t\tif ( truncate && jQuery( elem ).is( until ) ) {\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tmatched.push( elem );\n\t\t}\n\t}\n\treturn matched;\n};\n\n\nvar siblings = function( n, elem ) {\n\tvar matched = [];\n\n\tfor ( ; n; n = n.nextSibling ) {\n\t\tif ( n.nodeType === 1 && n !== elem ) {\n\t\t\tmatched.push( n );\n\t\t}\n\t}\n\n\treturn matched;\n};\n\n\nvar rneedsContext = jQuery.expr.match.needsContext;\n\nvar rsingleTag = ( /^<([a-z][^\\/\\0>:\\x20\\t\\r\\n\\f]*)[\\x20\\t\\r\\n\\f]*\\/?>(?:<\\/\\1>|)$/i );\n\n\n\n// Implement the identical functionality for filter and not\nfunction winnow( elements, qualifier, not ) {\n\tif ( isFunction( qualifier ) ) {\n\t\treturn jQuery.grep( elements, function( elem, i ) {\n\t\t\treturn !!qualifier.call( elem, i, elem ) !== not;\n\t\t} );\n\t}\n\n\t// Single element\n\tif ( qualifier.nodeType ) {\n\t\treturn jQuery.grep( elements, function( elem ) {\n\t\t\treturn ( elem === qualifier ) !== not;\n\t\t} );\n\t}\n\n\t// Arraylike of elements (jQuery, arguments, Array)\n\tif ( typeof qualifier !== \"string\" ) {\n\t\treturn jQuery.grep( elements, function( elem ) {\n\t\t\treturn ( indexOf.call( qualifier, elem ) > -1 ) !== not;\n\t\t} );\n\t}\n\n\t// Filtered directly for both simple and complex selectors\n\treturn jQuery.filter( qualifier, elements, not );\n}\n\njQuery.filter = function( expr, elems, not ) {\n\tvar elem = elems[ 0 ];\n\n\tif ( not ) {\n\t\texpr = \":not(\" + expr + \")\";\n\t}\n\n\tif ( elems.length === 1 && elem.nodeType === 1 ) {\n\t\treturn jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [];\n\t}\n\n\treturn jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {\n\t\treturn elem.nodeType === 1;\n\t} ) );\n};\n\njQuery.fn.extend( {\n\tfind: function( selector ) {\n\t\tvar i, ret,\n\t\t\tlen = this.length,\n\t\t\tself = this;\n\n\t\tif ( typeof selector !== \"string\" ) {\n\t\t\treturn this.pushStack( jQuery( selector ).filter( function() {\n\t\t\t\tfor ( i = 0; i < len; i++ ) {\n\t\t\t\t\tif ( jQuery.contains( self[ i ], this ) ) {\n\t\t\t\t\t\treturn true;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} ) );\n\t\t}\n\n\t\tret = this.pushStack( [] );\n\n\t\tfor ( i = 0; i < len; i++ ) {\n\t\t\tjQuery.find( selector, self[ i ], ret );\n\t\t}\n\n\t\treturn len > 1 ? jQuery.uniqueSort( ret ) : ret;\n\t},\n\tfilter: function( selector ) {\n\t\treturn this.pushStack( winnow( this, selector || [], false ) );\n\t},\n\tnot: function( selector ) {\n\t\treturn this.pushStack( winnow( this, selector || [], true ) );\n\t},\n\tis: function( selector ) {\n\t\treturn !!winnow(\n\t\t\tthis,\n\n\t\t\t// If this is a positional/relative selector, check membership in the returned set\n\t\t\t// so $(\"p:first\").is(\"p:last\") won't return true for a doc with two \"p\".\n\t\t\ttypeof selector === \"string\" && rneedsContext.test( selector ) ?\n\t\t\t\tjQuery( selector ) :\n\t\t\t\tselector || [],\n\t\t\tfalse\n\t\t).length;\n\t}\n} );\n\n\n// Initialize a jQuery object\n\n\n// A central reference to the root jQuery(document)\nvar rootjQuery,\n\n\t// A simple way to check for HTML strings\n\t// Prioritize #id over <tag> to avoid XSS via location.hash (trac-9521)\n\t// Strict HTML recognition (trac-11290: must start with <)\n\t// Shortcut simple #id case for speed\n\trquickExpr = /^(?:\\s*(<[\\w\\W]+>)[^>]*|#([\\w-]+))$/,\n\n\tinit = jQuery.fn.init = function( selector, context, root ) {\n\t\tvar match, elem;\n\n\t\t// HANDLE: $(\"\"), $(null), $(undefined), $(false)\n\t\tif ( !selector ) {\n\t\t\treturn this;\n\t\t}\n\n\t\t// Method init() accepts an alternate rootjQuery\n\t\t// so migrate can support jQuery.sub (gh-2101)\n\t\troot = root || rootjQuery;\n\n\t\t// Handle HTML strings\n\t\tif ( typeof selector === \"string\" ) {\n\t\t\tif ( selector[ 0 ] === \"<\" &&\n\t\t\t\tselector[ selector.length - 1 ] === \">\" &&\n\t\t\t\tselector.length >= 3 ) {\n\n\t\t\t\t// Assume that strings that start and end with <> are HTML and skip the regex check\n\t\t\t\tmatch = [ null, selector, null ];\n\n\t\t\t} else {\n\t\t\t\tmatch = rquickExpr.exec( selector );\n\t\t\t}\n\n\t\t\t// Match html or make sure no context is specified for #id\n\t\t\tif ( match && ( match[ 1 ] || !context ) ) {\n\n\t\t\t\t// HANDLE: $(html) -> $(array)\n\t\t\t\tif ( match[ 1 ] ) {\n\t\t\t\t\tcontext = context instanceof jQuery ? context[ 0 ] : context;\n\n\t\t\t\t\t// Option to run scripts is true for back-compat\n\t\t\t\t\t// Intentionally let the error be thrown if parseHTML is not present\n\t\t\t\t\tjQuery.merge( this, jQuery.parseHTML(\n\t\t\t\t\t\tmatch[ 1 ],\n\t\t\t\t\t\tcontext && context.nodeType ? context.ownerDocument || context : document,\n\t\t\t\t\t\ttrue\n\t\t\t\t\t) );\n\n\t\t\t\t\t// HANDLE: $(html, props)\n\t\t\t\t\tif ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) {\n\t\t\t\t\t\tfor ( match in context ) {\n\n\t\t\t\t\t\t\t// Properties of context are called as methods if possible\n\t\t\t\t\t\t\tif ( isFunction( this[ match ] ) ) {\n\t\t\t\t\t\t\t\tthis[ match ]( context[ match ] );\n\n\t\t\t\t\t\t\t// ...and otherwise set as attributes\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\tthis.attr( match, context[ match ] );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\treturn this;\n\n\t\t\t\t// HANDLE: $(#id)\n\t\t\t\t} else {\n\t\t\t\t\telem = document.getElementById( match[ 2 ] );\n\n\t\t\t\t\tif ( elem ) {\n\n\t\t\t\t\t\t// Inject the element directly into the jQuery object\n\t\t\t\t\t\tthis[ 0 ] = elem;\n\t\t\t\t\t\tthis.length = 1;\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t}\n\n\t\t\t// HANDLE: $(expr, $(...))\n\t\t\t} else if ( !context || context.jquery ) {\n\t\t\t\treturn ( context || root ).find( selector );\n\n\t\t\t// HANDLE: $(expr, context)\n\t\t\t// (which is just equivalent to: $(context).find(expr)\n\t\t\t} else {\n\t\t\t\treturn this.constructor( context ).find( selector );\n\t\t\t}\n\n\t\t// HANDLE: $(DOMElement)\n\t\t} else if ( selector.nodeType ) {\n\t\t\tthis[ 0 ] = selector;\n\t\t\tthis.length = 1;\n\t\t\treturn this;\n\n\t\t// HANDLE: $(function)\n\t\t// Shortcut for document ready\n\t\t} else if ( isFunction( selector ) ) {\n\t\t\treturn root.ready !== undefined ?\n\t\t\t\troot.ready( selector ) :\n\n\t\t\t\t// Execute immediately if ready is not present\n\t\t\t\tselector( jQuery );\n\t\t}\n\n\t\treturn jQuery.makeArray( selector, this );\n\t};\n\n// Give the init function the jQuery prototype for later instantiation\ninit.prototype = jQuery.fn;\n\n// Initialize central reference\nrootjQuery = jQuery( document );\n\n\nvar rparentsprev = /^(?:parents|prev(?:Until|All))/,\n\n\t// Methods guaranteed to produce a unique set when starting from a unique set\n\tguaranteedUnique = {\n\t\tchildren: true,\n\t\tcontents: true,\n\t\tnext: true,\n\t\tprev: true\n\t};\n\njQuery.fn.extend( {\n\thas: function( target ) {\n\t\tvar targets = jQuery( target, this ),\n\t\t\tl = targets.length;\n\n\t\treturn this.filter( function() {\n\t\t\tvar i = 0;\n\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\tif ( jQuery.contains( this, targets[ i ] ) ) {\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t},\n\n\tclosest: function( selectors, context ) {\n\t\tvar cur,\n\t\t\ti = 0,\n\t\t\tl = this.length,\n\t\t\tmatched = [],\n\t\t\ttargets = typeof selectors !== \"string\" && jQuery( selectors );\n\n\t\t// Positional selectors never match, since there's no _selection_ context\n\t\tif ( !rneedsContext.test( selectors ) ) {\n\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\tfor ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) {\n\n\t\t\t\t\t// Always skip document fragments\n\t\t\t\t\tif ( cur.nodeType < 11 && ( targets ?\n\t\t\t\t\t\ttargets.index( cur ) > -1 :\n\n\t\t\t\t\t\t// Don't pass non-elements to jQuery#find\n\t\t\t\t\t\tcur.nodeType === 1 &&\n\t\t\t\t\t\t\tjQuery.find.matchesSelector( cur, selectors ) ) ) {\n\n\t\t\t\t\t\tmatched.push( cur );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched );\n\t},\n\n\t// Determine the position of an element within the set\n\tindex: function( elem ) {\n\n\t\t// No argument, return index in parent\n\t\tif ( !elem ) {\n\t\t\treturn ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1;\n\t\t}\n\n\t\t// Index in selector\n\t\tif ( typeof elem === \"string\" ) {\n\t\t\treturn indexOf.call( jQuery( elem ), this[ 0 ] );\n\t\t}\n\n\t\t// Locate the position of the desired element\n\t\treturn indexOf.call( this,\n\n\t\t\t// If it receives a jQuery object, the first element is used\n\t\t\telem.jquery ? elem[ 0 ] : elem\n\t\t);\n\t},\n\n\tadd: function( selector, context ) {\n\t\treturn this.pushStack(\n\t\t\tjQuery.uniqueSort(\n\t\t\t\tjQuery.merge( this.get(), jQuery( selector, context ) )\n\t\t\t)\n\t\t);\n\t},\n\n\taddBack: function( selector ) {\n\t\treturn this.add( selector == null ?\n\t\t\tthis.prevObject : this.prevObject.filter( selector )\n\t\t);\n\t}\n} );\n\nfunction sibling( cur, dir ) {\n\twhile ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {}\n\treturn cur;\n}\n\njQuery.each( {\n\tparent: function( elem ) {\n\t\tvar parent = elem.parentNode;\n\t\treturn parent && parent.nodeType !== 11 ? parent : null;\n\t},\n\tparents: function( elem ) {\n\t\treturn dir( elem, \"parentNode\" );\n\t},\n\tparentsUntil: function( elem, _i, until ) {\n\t\treturn dir( elem, \"parentNode\", until );\n\t},\n\tnext: function( elem ) {\n\t\treturn sibling( elem, \"nextSibling\" );\n\t},\n\tprev: function( elem ) {\n\t\treturn sibling( elem, \"previousSibling\" );\n\t},\n\tnextAll: function( elem ) {\n\t\treturn dir( elem, \"nextSibling\" );\n\t},\n\tprevAll: function( elem ) {\n\t\treturn dir( elem, \"previousSibling\" );\n\t},\n\tnextUntil: function( elem, _i, until ) {\n\t\treturn dir( elem, \"nextSibling\", until );\n\t},\n\tprevUntil: function( elem, _i, until ) {\n\t\treturn dir( elem, \"previousSibling\", until );\n\t},\n\tsiblings: function( elem ) {\n\t\treturn siblings( ( elem.parentNode || {} ).firstChild, elem );\n\t},\n\tchildren: function( elem ) {\n\t\treturn siblings( elem.firstChild );\n\t},\n\tcontents: function( elem ) {\n\t\tif ( elem.contentDocument != null &&\n\n\t\t\t// Support: IE 11+\n\t\t\t// <object> elements with no `data` attribute has an object\n\t\t\t// `contentDocument` with a `null` prototype.\n\t\t\tgetProto( elem.contentDocument ) ) {\n\n\t\t\treturn elem.contentDocument;\n\t\t}\n\n\t\t// Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only\n\t\t// Treat the template element as a regular one in browsers that\n\t\t// don't support it.\n\t\tif ( nodeName( elem, \"template\" ) ) {\n\t\t\telem = elem.content || elem;\n\t\t}\n\n\t\treturn jQuery.merge( [], elem.childNodes );\n\t}\n}, function( name, fn ) {\n\tjQuery.fn[ name ] = function( until, selector ) {\n\t\tvar matched = jQuery.map( this, fn, until );\n\n\t\tif ( name.slice( -5 ) !== \"Until\" ) {\n\t\t\tselector = until;\n\t\t}\n\n\t\tif ( selector && typeof selector === \"string\" ) {\n\t\t\tmatched = jQuery.filter( selector, matched );\n\t\t}\n\n\t\tif ( this.length > 1 ) {\n\n\t\t\t// Remove duplicates\n\t\t\tif ( !guaranteedUnique[ name ] ) {\n\t\t\t\tjQuery.uniqueSort( matched );\n\t\t\t}\n\n\t\t\t// Reverse order for parents* and prev-derivatives\n\t\t\tif ( rparentsprev.test( name ) ) {\n\t\t\t\tmatched.reverse();\n\t\t\t}\n\t\t}\n\n\t\treturn this.pushStack( matched );\n\t};\n} );\nvar rnothtmlwhite = ( /[^\\x20\\t\\r\\n\\f]+/g );\n\n\n\n// Convert String-formatted options into Object-formatted ones\nfunction createOptions( options ) {\n\tvar object = {};\n\tjQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) {\n\t\tobject[ flag ] = true;\n\t} );\n\treturn object;\n}\n\n/*\n * Create a callback list using the following parameters:\n *\n *\toptions: an optional list of space-separated options that will change how\n *\t\t\tthe callback list behaves or a more traditional option object\n *\n * By default a callback list will act like an event callback list and can be\n * \"fired\" multiple times.\n *\n * Possible options:\n *\n *\tonce:\t\t\twill ensure the callback list can only be fired once (like a Deferred)\n *\n *\tmemory:\t\t\twill keep track of previous values and will call any callback added\n *\t\t\t\t\tafter the list has been fired right away with the latest \"memorized\"\n *\t\t\t\t\tvalues (like a Deferred)\n *\n *\tunique:\t\t\twill ensure a callback can only be added once (no duplicate in the list)\n *\n *\tstopOnFalse:\tinterrupt callings when a callback returns false\n *\n */\njQuery.Callbacks = function( options ) {\n\n\t// Convert options from String-formatted to Object-formatted if needed\n\t// (we check in cache first)\n\toptions = typeof options === \"string\" ?\n\t\tcreateOptions( options ) :\n\t\tjQuery.extend( {}, options );\n\n\tvar // Flag to know if list is currently firing\n\t\tfiring,\n\n\t\t// Last fire value for non-forgettable lists\n\t\tmemory,\n\n\t\t// Flag to know if list was already fired\n\t\tfired,\n\n\t\t// Flag to prevent firing\n\t\tlocked,\n\n\t\t// Actual callback list\n\t\tlist = [],\n\n\t\t// Queue of execution data for repeatable lists\n\t\tqueue = [],\n\n\t\t// Index of currently firing callback (modified by add/remove as needed)\n\t\tfiringIndex = -1,\n\n\t\t// Fire callbacks\n\t\tfire = function() {\n\n\t\t\t// Enforce single-firing\n\t\t\tlocked = locked || options.once;\n\n\t\t\t// Execute callbacks for all pending executions,\n\t\t\t// respecting firingIndex overrides and runtime changes\n\t\t\tfired = firing = true;\n\t\t\tfor ( ; queue.length; firingIndex = -1 ) {\n\t\t\t\tmemory = queue.shift();\n\t\t\t\twhile ( ++firingIndex < list.length ) {\n\n\t\t\t\t\t// Run callback and check for early termination\n\t\t\t\t\tif ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false &&\n\t\t\t\t\t\toptions.stopOnFalse ) {\n\n\t\t\t\t\t\t// Jump to end and forget the data so .add doesn't re-fire\n\t\t\t\t\t\tfiringIndex = list.length;\n\t\t\t\t\t\tmemory = false;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Forget the data if we're done with it\n\t\t\tif ( !options.memory ) {\n\t\t\t\tmemory = false;\n\t\t\t}\n\n\t\t\tfiring = false;\n\n\t\t\t// Clean up if we're done firing for good\n\t\t\tif ( locked ) {\n\n\t\t\t\t// Keep an empty list if we have data for future add calls\n\t\t\t\tif ( memory ) {\n\t\t\t\t\tlist = [];\n\n\t\t\t\t// Otherwise, this object is spent\n\t\t\t\t} else {\n\t\t\t\t\tlist = \"\";\n\t\t\t\t}\n\t\t\t}\n\t\t},\n\n\t\t// Actual Callbacks object\n\t\tself = {\n\n\t\t\t// Add a callback or a collection of callbacks to the list\n\t\t\tadd: function() {\n\t\t\t\tif ( list ) {\n\n\t\t\t\t\t// If we have memory from a past run, we should fire after adding\n\t\t\t\t\tif ( memory && !firing ) {\n\t\t\t\t\t\tfiringIndex = list.length - 1;\n\t\t\t\t\t\tqueue.push( memory );\n\t\t\t\t\t}\n\n\t\t\t\t\t( function add( args ) {\n\t\t\t\t\t\tjQuery.each( args, function( _, arg ) {\n\t\t\t\t\t\t\tif ( isFunction( arg ) ) {\n\t\t\t\t\t\t\t\tif ( !options.unique || !self.has( arg ) ) {\n\t\t\t\t\t\t\t\t\tlist.push( arg );\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} else if ( arg && arg.length && toType( arg ) !== \"string\" ) {\n\n\t\t\t\t\t\t\t\t// Inspect recursively\n\t\t\t\t\t\t\t\tadd( arg );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} );\n\t\t\t\t\t} )( arguments );\n\n\t\t\t\t\tif ( memory && !firing ) {\n\t\t\t\t\t\tfire();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Remove a callback from the list\n\t\t\tremove: function() {\n\t\t\t\tjQuery.each( arguments, function( _, arg ) {\n\t\t\t\t\tvar index;\n\t\t\t\t\twhile ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {\n\t\t\t\t\t\tlist.splice( index, 1 );\n\n\t\t\t\t\t\t// Handle firing indexes\n\t\t\t\t\t\tif ( index <= firingIndex ) {\n\t\t\t\t\t\t\tfiringIndex--;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} );\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Check if a given callback is in the list.\n\t\t\t// If no argument is given, return whether or not list has callbacks attached.\n\t\t\thas: function( fn ) {\n\t\t\t\treturn fn ?\n\t\t\t\t\tjQuery.inArray( fn, list ) > -1 :\n\t\t\t\t\tlist.length > 0;\n\t\t\t},\n\n\t\t\t// Remove all callbacks from the list\n\t\t\tempty: function() {\n\t\t\t\tif ( list ) {\n\t\t\t\t\tlist = [];\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Disable .fire and .add\n\t\t\t// Abort any current/pending executions\n\t\t\t// Clear all callbacks and values\n\t\t\tdisable: function() {\n\t\t\t\tlocked = queue = [];\n\t\t\t\tlist = memory = \"\";\n\t\t\t\treturn this;\n\t\t\t},\n\t\t\tdisabled: function() {\n\t\t\t\treturn !list;\n\t\t\t},\n\n\t\t\t// Disable .fire\n\t\t\t// Also disable .add unless we have memory (since it would have no effect)\n\t\t\t// Abort any pending executions\n\t\t\tlock: function() {\n\t\t\t\tlocked = queue = [];\n\t\t\t\tif ( !memory && !firing ) {\n\t\t\t\t\tlist = memory = \"\";\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\t\t\tlocked: function() {\n\t\t\t\treturn !!locked;\n\t\t\t},\n\n\t\t\t// Call all callbacks with the given context and arguments\n\t\t\tfireWith: function( context, args ) {\n\t\t\t\tif ( !locked ) {\n\t\t\t\t\targs = args || [];\n\t\t\t\t\targs = [ context, args.slice ? args.slice() : args ];\n\t\t\t\t\tqueue.push( args );\n\t\t\t\t\tif ( !firing ) {\n\t\t\t\t\t\tfire();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Call all the callbacks with the given arguments\n\t\t\tfire: function() {\n\t\t\t\tself.fireWith( this, arguments );\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// To know if the callbacks have already been called at least once\n\t\t\tfired: function() {\n\t\t\t\treturn !!fired;\n\t\t\t}\n\t\t};\n\n\treturn self;\n};\n\n\nfunction Identity( v ) {\n\treturn v;\n}\nfunction Thrower( ex ) {\n\tthrow ex;\n}\n\nfunction adoptValue( value, resolve, reject, noValue ) {\n\tvar method;\n\n\ttry {\n\n\t\t// Check for promise aspect first to privilege synchronous behavior\n\t\tif ( value && isFunction( ( method = value.promise ) ) ) {\n\t\t\tmethod.call( value ).done( resolve ).fail( reject );\n\n\t\t// Other thenables\n\t\t} else if ( value && isFunction( ( method = value.then ) ) ) {\n\t\t\tmethod.call( value, resolve, reject );\n\n\t\t// Other non-thenables\n\t\t} else {\n\n\t\t\t// Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:\n\t\t\t// * false: [ value ].slice( 0 ) => resolve( value )\n\t\t\t// * true: [ value ].slice( 1 ) => resolve()\n\t\t\tresolve.apply( undefined, [ value ].slice( noValue ) );\n\t\t}\n\n\t// For Promises/A+, convert exceptions into rejections\n\t// Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in\n\t// Deferred#then to conditionally suppress rejection.\n\t} catch ( value ) {\n\n\t\t// Support: Android 4.0 only\n\t\t// Strict mode functions invoked without .call/.apply get global-object context\n\t\treject.apply( undefined, [ value ] );\n\t}\n}\n\njQuery.extend( {\n\n\tDeferred: function( func ) {\n\t\tvar tuples = [\n\n\t\t\t\t// action, add listener, callbacks,\n\t\t\t\t// ... .then handlers, argument index, [final state]\n\t\t\t\t[ \"notify\", \"progress\", jQuery.Callbacks( \"memory\" ),\n\t\t\t\t\tjQuery.Callbacks( \"memory\" ), 2 ],\n\t\t\t\t[ \"resolve\", \"done\", jQuery.Callbacks( \"once memory\" ),\n\t\t\t\t\tjQuery.Callbacks( \"once memory\" ), 0, \"resolved\" ],\n\t\t\t\t[ \"reject\", \"fail\", jQuery.Callbacks( \"once memory\" ),\n\t\t\t\t\tjQuery.Callbacks( \"once memory\" ), 1, \"rejected\" ]\n\t\t\t],\n\t\t\tstate = \"pending\",\n\t\t\tpromise = {\n\t\t\t\tstate: function() {\n\t\t\t\t\treturn state;\n\t\t\t\t},\n\t\t\t\talways: function() {\n\t\t\t\t\tdeferred.done( arguments ).fail( arguments );\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\t\t\t\t\"catch\": function( fn ) {\n\t\t\t\t\treturn promise.then( null, fn );\n\t\t\t\t},\n\n\t\t\t\t// Keep pipe for back-compat\n\t\t\t\tpipe: function( /* fnDone, fnFail, fnProgress */ ) {\n\t\t\t\t\tvar fns = arguments;\n\n\t\t\t\t\treturn jQuery.Deferred( function( newDefer ) {\n\t\t\t\t\t\tjQuery.each( tuples, function( _i, tuple ) {\n\n\t\t\t\t\t\t\t// Map tuples (progress, done, fail) to arguments (done, fail, progress)\n\t\t\t\t\t\t\tvar fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ];\n\n\t\t\t\t\t\t\t// deferred.progress(function() { bind to newDefer or newDefer.notify })\n\t\t\t\t\t\t\t// deferred.done(function() { bind to newDefer or newDefer.resolve })\n\t\t\t\t\t\t\t// deferred.fail(function() { bind to newDefer or newDefer.reject })\n\t\t\t\t\t\t\tdeferred[ tuple[ 1 ] ]( function() {\n\t\t\t\t\t\t\t\tvar returned = fn && fn.apply( this, arguments );\n\t\t\t\t\t\t\t\tif ( returned && isFunction( returned.promise ) ) {\n\t\t\t\t\t\t\t\t\treturned.promise()\n\t\t\t\t\t\t\t\t\t\t.progress( newDefer.notify )\n\t\t\t\t\t\t\t\t\t\t.done( newDefer.resolve )\n\t\t\t\t\t\t\t\t\t\t.fail( newDefer.reject );\n\t\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\t\tnewDefer[ tuple[ 0 ] + \"With\" ](\n\t\t\t\t\t\t\t\t\t\tthis,\n\t\t\t\t\t\t\t\t\t\tfn ? [ returned ] : arguments\n\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} );\n\t\t\t\t\t\t} );\n\t\t\t\t\t\tfns = null;\n\t\t\t\t\t} ).promise();\n\t\t\t\t},\n\t\t\t\tthen: function( onFulfilled, onRejected, onProgress ) {\n\t\t\t\t\tvar maxDepth = 0;\n\t\t\t\t\tfunction resolve( depth, deferred, handler, special ) {\n\t\t\t\t\t\treturn function() {\n\t\t\t\t\t\t\tvar that = this,\n\t\t\t\t\t\t\t\targs = arguments,\n\t\t\t\t\t\t\t\tmightThrow = function() {\n\t\t\t\t\t\t\t\t\tvar returned, then;\n\n\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.3.3.3\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-59\n\t\t\t\t\t\t\t\t\t// Ignore double-resolution attempts\n\t\t\t\t\t\t\t\t\tif ( depth < maxDepth ) {\n\t\t\t\t\t\t\t\t\t\treturn;\n\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\treturned = handler.apply( that, args );\n\n\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.1\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-48\n\t\t\t\t\t\t\t\t\tif ( returned === deferred.promise() ) {\n\t\t\t\t\t\t\t\t\t\tthrow new TypeError( \"Thenable self-resolution\" );\n\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t// Support: Promises/A+ sections 2.3.3.1, 3.5\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-54\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-75\n\t\t\t\t\t\t\t\t\t// Retrieve `then` only once\n\t\t\t\t\t\t\t\t\tthen = returned &&\n\n\t\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.4\n\t\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-64\n\t\t\t\t\t\t\t\t\t\t// Only check objects and functions for thenability\n\t\t\t\t\t\t\t\t\t\t( typeof returned === \"object\" ||\n\t\t\t\t\t\t\t\t\t\t\ttypeof returned === \"function\" ) &&\n\t\t\t\t\t\t\t\t\t\treturned.then;\n\n\t\t\t\t\t\t\t\t\t// Handle a returned thenable\n\t\t\t\t\t\t\t\t\tif ( isFunction( then ) ) {\n\n\t\t\t\t\t\t\t\t\t\t// Special processors (notify) just wait for resolution\n\t\t\t\t\t\t\t\t\t\tif ( special ) {\n\t\t\t\t\t\t\t\t\t\t\tthen.call(\n\t\t\t\t\t\t\t\t\t\t\t\treturned,\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Identity, special ),\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Thrower, special )\n\t\t\t\t\t\t\t\t\t\t\t);\n\n\t\t\t\t\t\t\t\t\t\t// Normal processors (resolve) also hook into progress\n\t\t\t\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t\t\t\t// ...and disregard older resolution values\n\t\t\t\t\t\t\t\t\t\t\tmaxDepth++;\n\n\t\t\t\t\t\t\t\t\t\t\tthen.call(\n\t\t\t\t\t\t\t\t\t\t\t\treturned,\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Identity, special ),\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Thrower, special ),\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Identity,\n\t\t\t\t\t\t\t\t\t\t\t\t\tdeferred.notifyWith )\n\t\t\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t// Handle all other returned values\n\t\t\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t\t\t// Only substitute handlers pass on context\n\t\t\t\t\t\t\t\t\t\t// and multiple values (non-spec behavior)\n\t\t\t\t\t\t\t\t\t\tif ( handler !== Identity ) {\n\t\t\t\t\t\t\t\t\t\t\tthat = undefined;\n\t\t\t\t\t\t\t\t\t\t\targs = [ returned ];\n\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\t// Process the value(s)\n\t\t\t\t\t\t\t\t\t\t// Default process is resolve\n\t\t\t\t\t\t\t\t\t\t( special || deferred.resolveWith )( that, args );\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t},\n\n\t\t\t\t\t\t\t\t// Only normal processors (resolve) catch and reject exceptions\n\t\t\t\t\t\t\t\tprocess = special ?\n\t\t\t\t\t\t\t\t\tmightThrow :\n\t\t\t\t\t\t\t\t\tfunction() {\n\t\t\t\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\t\t\t\tmightThrow();\n\t\t\t\t\t\t\t\t\t\t} catch ( e ) {\n\n\t\t\t\t\t\t\t\t\t\t\tif ( jQuery.Deferred.exceptionHook ) {\n\t\t\t\t\t\t\t\t\t\t\t\tjQuery.Deferred.exceptionHook( e,\n\t\t\t\t\t\t\t\t\t\t\t\t\tprocess.error );\n\t\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.3.3.4.1\n\t\t\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-61\n\t\t\t\t\t\t\t\t\t\t\t// Ignore post-resolution exceptions\n\t\t\t\t\t\t\t\t\t\t\tif ( depth + 1 >= maxDepth ) {\n\n\t\t\t\t\t\t\t\t\t\t\t\t// Only substitute handlers pass on context\n\t\t\t\t\t\t\t\t\t\t\t\t// and multiple values (non-spec behavior)\n\t\t\t\t\t\t\t\t\t\t\t\tif ( handler !== Thrower ) {\n\t\t\t\t\t\t\t\t\t\t\t\t\tthat = undefined;\n\t\t\t\t\t\t\t\t\t\t\t\t\targs = [ e ];\n\t\t\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\t\t\tdeferred.rejectWith( that, args );\n\t\t\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\t};\n\n\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.3.3.1\n\t\t\t\t\t\t\t// https://promisesaplus.com/#point-57\n\t\t\t\t\t\t\t// Re-resolve promises immediately to dodge false rejection from\n\t\t\t\t\t\t\t// subsequent errors\n\t\t\t\t\t\t\tif ( depth ) {\n\t\t\t\t\t\t\t\tprocess();\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t// Call an optional hook to record the error, in case of exception\n\t\t\t\t\t\t\t\t// since it's otherwise lost when execution goes async\n\t\t\t\t\t\t\t\tif ( jQuery.Deferred.getErrorHook ) {\n\t\t\t\t\t\t\t\t\tprocess.error = jQuery.Deferred.getErrorHook();\n\n\t\t\t\t\t\t\t\t// The deprecated alias of the above. While the name suggests\n\t\t\t\t\t\t\t\t// returning the stack, not an error instance, jQuery just passes\n\t\t\t\t\t\t\t\t// it directly to `console.warn` so both will work; an instance\n\t\t\t\t\t\t\t\t// just better cooperates with source maps.\n\t\t\t\t\t\t\t\t} else if ( jQuery.Deferred.getStackHook ) {\n\t\t\t\t\t\t\t\t\tprocess.error = jQuery.Deferred.getStackHook();\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\twindow.setTimeout( process );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t};\n\t\t\t\t\t}\n\n\t\t\t\t\treturn jQuery.Deferred( function( newDefer ) {\n\n\t\t\t\t\t\t// progress_handlers.add( ... )\n\t\t\t\t\t\ttuples[ 0 ][ 3 ].add(\n\t\t\t\t\t\t\tresolve(\n\t\t\t\t\t\t\t\t0,\n\t\t\t\t\t\t\t\tnewDefer,\n\t\t\t\t\t\t\t\tisFunction( onProgress ) ?\n\t\t\t\t\t\t\t\t\tonProgress :\n\t\t\t\t\t\t\t\t\tIdentity,\n\t\t\t\t\t\t\t\tnewDefer.notifyWith\n\t\t\t\t\t\t\t)\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\t// fulfilled_handlers.add( ... )\n\t\t\t\t\t\ttuples[ 1 ][ 3 ].add(\n\t\t\t\t\t\t\tresolve(\n\t\t\t\t\t\t\t\t0,\n\t\t\t\t\t\t\t\tnewDefer,\n\t\t\t\t\t\t\t\tisFunction( onFulfilled ) ?\n\t\t\t\t\t\t\t\t\tonFulfilled :\n\t\t\t\t\t\t\t\t\tIdentity\n\t\t\t\t\t\t\t)\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\t// rejected_handlers.add( ... )\n\t\t\t\t\t\ttuples[ 2 ][ 3 ].add(\n\t\t\t\t\t\t\tresolve(\n\t\t\t\t\t\t\t\t0,\n\t\t\t\t\t\t\t\tnewDefer,\n\t\t\t\t\t\t\t\tisFunction( onRejected ) ?\n\t\t\t\t\t\t\t\t\tonRejected :\n\t\t\t\t\t\t\t\t\tThrower\n\t\t\t\t\t\t\t)\n\t\t\t\t\t\t);\n\t\t\t\t\t} ).promise();\n\t\t\t\t},\n\n\t\t\t\t// Get a promise for this deferred\n\t\t\t\t// If obj is provided, the promise aspect is added to the object\n\t\t\t\tpromise: function( obj ) {\n\t\t\t\t\treturn obj != null ? jQuery.extend( obj, promise ) : promise;\n\t\t\t\t}\n\t\t\t},\n\t\t\tdeferred = {};\n\n\t\t// Add list-specific methods\n\t\tjQuery.each( tuples, function( i, tuple ) {\n\t\t\tvar list = tuple[ 2 ],\n\t\t\t\tstateString = tuple[ 5 ];\n\n\t\t\t// promise.progress = list.add\n\t\t\t// promise.done = list.add\n\t\t\t// promise.fail = list.add\n\t\t\tpromise[ tuple[ 1 ] ] = list.add;\n\n\t\t\t// Handle state\n\t\t\tif ( stateString ) {\n\t\t\t\tlist.add(\n\t\t\t\t\tfunction() {\n\n\t\t\t\t\t\t// state = \"resolved\" (i.e., fulfilled)\n\t\t\t\t\t\t// state = \"rejected\"\n\t\t\t\t\t\tstate = stateString;\n\t\t\t\t\t},\n\n\t\t\t\t\t// rejected_callbacks.disable\n\t\t\t\t\t// fulfilled_callbacks.disable\n\t\t\t\t\ttuples[ 3 - i ][ 2 ].disable,\n\n\t\t\t\t\t// rejected_handlers.disable\n\t\t\t\t\t// fulfilled_handlers.disable\n\t\t\t\t\ttuples[ 3 - i ][ 3 ].disable,\n\n\t\t\t\t\t// progress_callbacks.lock\n\t\t\t\t\ttuples[ 0 ][ 2 ].lock,\n\n\t\t\t\t\t// progress_handlers.lock\n\t\t\t\t\ttuples[ 0 ][ 3 ].lock\n\t\t\t\t);\n\t\t\t}\n\n\t\t\t// progress_handlers.fire\n\t\t\t// fulfilled_handlers.fire\n\t\t\t// rejected_handlers.fire\n\t\t\tlist.add( tuple[ 3 ].fire );\n\n\t\t\t// deferred.notify = function() { deferred.notifyWith(...) }\n\t\t\t// deferred.resolve = function() { deferred.resolveWith(...) }\n\t\t\t// deferred.reject = function() { deferred.rejectWith(...) }\n\t\t\tdeferred[ tuple[ 0 ] ] = function() {\n\t\t\t\tdeferred[ tuple[ 0 ] + \"With\" ]( this === deferred ? undefined : this, arguments );\n\t\t\t\treturn this;\n\t\t\t};\n\n\t\t\t// deferred.notifyWith = list.fireWith\n\t\t\t// deferred.resolveWith = list.fireWith\n\t\t\t// deferred.rejectWith = list.fireWith\n\t\t\tdeferred[ tuple[ 0 ] + \"With\" ] = list.fireWith;\n\t\t} );\n\n\t\t// Make the deferred a promise\n\t\tpromise.promise( deferred );\n\n\t\t// Call given func if any\n\t\tif ( func ) {\n\t\t\tfunc.call( deferred, deferred );\n\t\t}\n\n\t\t// All done!\n\t\treturn deferred;\n\t},\n\n\t// Deferred helper\n\twhen: function( singleValue ) {\n\t\tvar\n\n\t\t\t// count of uncompleted subordinates\n\t\t\tremaining = arguments.length,\n\n\t\t\t// count of unprocessed arguments\n\t\t\ti = remaining,\n\n\t\t\t// subordinate fulfillment data\n\t\t\tresolveContexts = Array( i ),\n\t\t\tresolveValues = slice.call( arguments ),\n\n\t\t\t// the primary Deferred\n\t\t\tprimary = jQuery.Deferred(),\n\n\t\t\t// subordinate callback factory\n\t\t\tupdateFunc = function( i ) {\n\t\t\t\treturn function( value ) {\n\t\t\t\t\tresolveContexts[ i ] = this;\n\t\t\t\t\tresolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;\n\t\t\t\t\tif ( !( --remaining ) ) {\n\t\t\t\t\t\tprimary.resolveWith( resolveContexts, resolveValues );\n\t\t\t\t\t}\n\t\t\t\t};\n\t\t\t};\n\n\t\t// Single- and empty arguments are adopted like Promise.resolve\n\t\tif ( remaining <= 1 ) {\n\t\t\tadoptValue( singleValue, primary.done( updateFunc( i ) ).resolve, primary.reject,\n\t\t\t\t!remaining );\n\n\t\t\t// Use .then() to unwrap secondary thenables (cf. gh-3000)\n\t\t\tif ( primary.state() === \"pending\" ||\n\t\t\t\tisFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) {\n\n\t\t\t\treturn primary.then();\n\t\t\t}\n\t\t}\n\n\t\t// Multiple arguments are aggregated like Promise.all array elements\n\t\twhile ( i-- ) {\n\t\t\tadoptValue( resolveValues[ i ], updateFunc( i ), primary.reject );\n\t\t}\n\n\t\treturn primary.promise();\n\t}\n} );\n\n\n// These usually indicate a programmer mistake during development,\n// warn about them ASAP rather than swallowing them by default.\nvar rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;\n\n// If `jQuery.Deferred.getErrorHook` is defined, `asyncError` is an error\n// captured before the async barrier to get the original error cause\n// which may otherwise be hidden.\njQuery.Deferred.exceptionHook = function( error, asyncError ) {\n\n\t// Support: IE 8 - 9 only\n\t// Console exists when dev tools are open, which can happen at any time\n\tif ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) {\n\t\twindow.console.warn( \"jQuery.Deferred exception: \" + error.message,\n\t\t\terror.stack, asyncError );\n\t}\n};\n\n\n\n\njQuery.readyException = function( error ) {\n\twindow.setTimeout( function() {\n\t\tthrow error;\n\t} );\n};\n\n\n\n\n// The deferred used on DOM ready\nvar readyList = jQuery.Deferred();\n\njQuery.fn.ready = function( fn ) {\n\n\treadyList\n\t\t.then( fn )\n\n\t\t// Wrap jQuery.readyException in a function so that the lookup\n\t\t// happens at the time of error handling instead of callback\n\t\t// registration.\n\t\t.catch( function( error ) {\n\t\t\tjQuery.readyException( error );\n\t\t} );\n\n\treturn this;\n};\n\njQuery.extend( {\n\n\t// Is the DOM ready to be used? Set to true once it occurs.\n\tisReady: false,\n\n\t// A counter to track how many items to wait for before\n\t// the ready event fires. See trac-6781\n\treadyWait: 1,\n\n\t// Handle when the DOM is ready\n\tready: function( wait ) {\n\n\t\t// Abort if there are pending holds or we're already ready\n\t\tif ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Remember that the DOM is ready\n\t\tjQuery.isReady = true;\n\n\t\t// If a normal DOM Ready event fired, decrement, and wait if need be\n\t\tif ( wait !== true && --jQuery.readyWait > 0 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// If there are functions bound, to execute\n\t\treadyList.resolveWith( document, [ jQuery ] );\n\t}\n} );\n\njQuery.ready.then = readyList.then;\n\n// The ready event handler and self cleanup method\nfunction completed() {\n\tdocument.removeEventListener( \"DOMContentLoaded\", completed );\n\twindow.removeEventListener( \"load\", completed );\n\tjQuery.ready();\n}\n\n// Catch cases where $(document).ready() is called\n// after the browser event has already occurred.\n// Support: IE <=9 - 10 only\n// Older IE sometimes signals \"interactive\" too soon\nif ( document.readyState === \"complete\" ||\n\t( document.readyState !== \"loading\" && !document.documentElement.doScroll ) ) {\n\n\t// Handle it asynchronously to allow scripts the opportunity to delay ready\n\twindow.setTimeout( jQuery.ready );\n\n} else {\n\n\t// Use the handy event callback\n\tdocument.addEventListener( \"DOMContentLoaded\", completed );\n\n\t// A fallback to window.onload, that will always work\n\twindow.addEventListener( \"load\", completed );\n}\n\n\n\n\n// Multifunctional method to get and set values of a collection\n// The value/s can optionally be executed if it's a function\nvar access = function( elems, fn, key, value, chainable, emptyGet, raw ) {\n\tvar i = 0,\n\t\tlen = elems.length,\n\t\tbulk = key == null;\n\n\t// Sets many values\n\tif ( toType( key ) === \"object\" ) {\n\t\tchainable = true;\n\t\tfor ( i in key ) {\n\t\t\taccess( elems, fn, i, key[ i ], true, emptyGet, raw );\n\t\t}\n\n\t// Sets one value\n\t} else if ( value !== undefined ) {\n\t\tchainable = true;\n\n\t\tif ( !isFunction( value ) ) {\n\t\t\traw = true;\n\t\t}\n\n\t\tif ( bulk ) {\n\n\t\t\t// Bulk operations run against the entire set\n\t\t\tif ( raw ) {\n\t\t\t\tfn.call( elems, value );\n\t\t\t\tfn = null;\n\n\t\t\t// ...except when executing function values\n\t\t\t} else {\n\t\t\t\tbulk = fn;\n\t\t\t\tfn = function( elem, _key, value ) {\n\t\t\t\t\treturn bulk.call( jQuery( elem ), value );\n\t\t\t\t};\n\t\t\t}\n\t\t}\n\n\t\tif ( fn ) {\n\t\t\tfor ( ; i < len; i++ ) {\n\t\t\t\tfn(\n\t\t\t\t\telems[ i ], key, raw ?\n\t\t\t\t\t\tvalue :\n\t\t\t\t\t\tvalue.call( elems[ i ], i, fn( elems[ i ], key ) )\n\t\t\t\t);\n\t\t\t}\n\t\t}\n\t}\n\n\tif ( chainable ) {\n\t\treturn elems;\n\t}\n\n\t// Gets\n\tif ( bulk ) {\n\t\treturn fn.call( elems );\n\t}\n\n\treturn len ? fn( elems[ 0 ], key ) : emptyGet;\n};\n\n\n// Matches dashed string for camelizing\nvar rmsPrefix = /^-ms-/,\n\trdashAlpha = /-([a-z])/g;\n\n// Used by camelCase as callback to replace()\nfunction fcamelCase( _all, letter ) {\n\treturn letter.toUpperCase();\n}\n\n// Convert dashed to camelCase; used by the css and data modules\n// Support: IE <=9 - 11, Edge 12 - 15\n// Microsoft forgot to hump their vendor prefix (trac-9572)\nfunction camelCase( string ) {\n\treturn string.replace( rmsPrefix, \"ms-\" ).replace( rdashAlpha, fcamelCase );\n}\nvar acceptData = function( owner ) {\n\n\t// Accepts only:\n\t//  - Node\n\t//    - Node.ELEMENT_NODE\n\t//    - Node.DOCUMENT_NODE\n\t//  - Object\n\t//    - Any\n\treturn owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType );\n};\n\n\n\n\nfunction Data() {\n\tthis.expando = jQuery.expando + Data.uid++;\n}\n\nData.uid = 1;\n\nData.prototype = {\n\n\tcache: function( owner ) {\n\n\t\t// Check if the owner object already has a cache\n\t\tvar value = owner[ this.expando ];\n\n\t\t// If not, create one\n\t\tif ( !value ) {\n\t\t\tvalue = {};\n\n\t\t\t// We can accept data for non-element nodes in modern browsers,\n\t\t\t// but we should not, see trac-8335.\n\t\t\t// Always return an empty object.\n\t\t\tif ( acceptData( owner ) ) {\n\n\t\t\t\t// If it is a node unlikely to be stringify-ed or looped over\n\t\t\t\t// use plain assignment\n\t\t\t\tif ( owner.nodeType ) {\n\t\t\t\t\towner[ this.expando ] = value;\n\n\t\t\t\t// Otherwise secure it in a non-enumerable property\n\t\t\t\t// configurable must be true to allow the property to be\n\t\t\t\t// deleted when data is removed\n\t\t\t\t} else {\n\t\t\t\t\tObject.defineProperty( owner, this.expando, {\n\t\t\t\t\t\tvalue: value,\n\t\t\t\t\t\tconfigurable: true\n\t\t\t\t\t} );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn value;\n\t},\n\tset: function( owner, data, value ) {\n\t\tvar prop,\n\t\t\tcache = this.cache( owner );\n\n\t\t// Handle: [ owner, key, value ] args\n\t\t// Always use camelCase key (gh-2257)\n\t\tif ( typeof data === \"string\" ) {\n\t\t\tcache[ camelCase( data ) ] = value;\n\n\t\t// Handle: [ owner, { properties } ] args\n\t\t} else {\n\n\t\t\t// Copy the properties one-by-one to the cache object\n\t\t\tfor ( prop in data ) {\n\t\t\t\tcache[ camelCase( prop ) ] = data[ prop ];\n\t\t\t}\n\t\t}\n\t\treturn cache;\n\t},\n\tget: function( owner, key ) {\n\t\treturn key === undefined ?\n\t\t\tthis.cache( owner ) :\n\n\t\t\t// Always use camelCase key (gh-2257)\n\t\t\towner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ];\n\t},\n\taccess: function( owner, key, value ) {\n\n\t\t// In cases where either:\n\t\t//\n\t\t//   1. No key was specified\n\t\t//   2. A string key was specified, but no value provided\n\t\t//\n\t\t// Take the \"read\" path and allow the get method to determine\n\t\t// which value to return, respectively either:\n\t\t//\n\t\t//   1. The entire cache object\n\t\t//   2. The data stored at the key\n\t\t//\n\t\tif ( key === undefined ||\n\t\t\t\t( ( key && typeof key === \"string\" ) && value === undefined ) ) {\n\n\t\t\treturn this.get( owner, key );\n\t\t}\n\n\t\t// When the key is not a string, or both a key and value\n\t\t// are specified, set or extend (existing objects) with either:\n\t\t//\n\t\t//   1. An object of properties\n\t\t//   2. A key and value\n\t\t//\n\t\tthis.set( owner, key, value );\n\n\t\t// Since the \"set\" path can have two possible entry points\n\t\t// return the expected data based on which path was taken[*]\n\t\treturn value !== undefined ? value : key;\n\t},\n\tremove: function( owner, key ) {\n\t\tvar i,\n\t\t\tcache = owner[ this.expando ];\n\n\t\tif ( cache === undefined ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( key !== undefined ) {\n\n\t\t\t// Support array or space separated string of keys\n\t\t\tif ( Array.isArray( key ) ) {\n\n\t\t\t\t// If key is an array of keys...\n\t\t\t\t// We always set camelCase keys, so remove that.\n\t\t\t\tkey = key.map( camelCase );\n\t\t\t} else {\n\t\t\t\tkey = camelCase( key );\n\n\t\t\t\t// If a key with the spaces exists, use it.\n\t\t\t\t// Otherwise, create an array by matching non-whitespace\n\t\t\t\tkey = key in cache ?\n\t\t\t\t\t[ key ] :\n\t\t\t\t\t( key.match( rnothtmlwhite ) || [] );\n\t\t\t}\n\n\t\t\ti = key.length;\n\n\t\t\twhile ( i-- ) {\n\t\t\t\tdelete cache[ key[ i ] ];\n\t\t\t}\n\t\t}\n\n\t\t// Remove the expando if there's no more data\n\t\tif ( key === undefined || jQuery.isEmptyObject( cache ) ) {\n\n\t\t\t// Support: Chrome <=35 - 45\n\t\t\t// Webkit & Blink performance suffers when deleting properties\n\t\t\t// from DOM nodes, so set to undefined instead\n\t\t\t// https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)\n\t\t\tif ( owner.nodeType ) {\n\t\t\t\towner[ this.expando ] = undefined;\n\t\t\t} else {\n\t\t\t\tdelete owner[ this.expando ];\n\t\t\t}\n\t\t}\n\t},\n\thasData: function( owner ) {\n\t\tvar cache = owner[ this.expando ];\n\t\treturn cache !== undefined && !jQuery.isEmptyObject( cache );\n\t}\n};\nvar dataPriv = new Data();\n\nvar dataUser = new Data();\n\n\n\n//\tImplementation Summary\n//\n//\t1. Enforce API surface and semantic compatibility with 1.9.x branch\n//\t2. Improve the module's maintainability by reducing the storage\n//\t\tpaths to a single mechanism.\n//\t3. Use the same single mechanism to support \"private\" and \"user\" data.\n//\t4. _Never_ expose \"private\" data to user code (TODO: Drop _data, _removeData)\n//\t5. Avoid exposing implementation details on user objects (eg. expando properties)\n//\t6. Provide a clear path for implementation upgrade to WeakMap in 2014\n\nvar rbrace = /^(?:\\{[\\w\\W]*\\}|\\[[\\w\\W]*\\])$/,\n\trmultiDash = /[A-Z]/g;\n\nfunction getData( data ) {\n\tif ( data === \"true\" ) {\n\t\treturn true;\n\t}\n\n\tif ( data === \"false\" ) {\n\t\treturn false;\n\t}\n\n\tif ( data === \"null\" ) {\n\t\treturn null;\n\t}\n\n\t// Only convert to a number if it doesn't change the string\n\tif ( data === +data + \"\" ) {\n\t\treturn +data;\n\t}\n\n\tif ( rbrace.test( data ) ) {\n\t\treturn JSON.parse( data );\n\t}\n\n\treturn data;\n}\n\nfunction dataAttr( elem, key, data ) {\n\tvar name;\n\n\t// If nothing was found internally, try to fetch any\n\t// data from the HTML5 data-* attribute\n\tif ( data === undefined && elem.nodeType === 1 ) {\n\t\tname = \"data-\" + key.replace( rmultiDash, \"-$&\" ).toLowerCase();\n\t\tdata = elem.getAttribute( name );\n\n\t\tif ( typeof data === \"string\" ) {\n\t\t\ttry {\n\t\t\t\tdata = getData( data );\n\t\t\t} catch ( e ) {}\n\n\t\t\t// Make sure we set the data so it isn't changed later\n\t\t\tdataUser.set( elem, key, data );\n\t\t} else {\n\t\t\tdata = undefined;\n\t\t}\n\t}\n\treturn data;\n}\n\njQuery.extend( {\n\thasData: function( elem ) {\n\t\treturn dataUser.hasData( elem ) || dataPriv.hasData( elem );\n\t},\n\n\tdata: function( elem, name, data ) {\n\t\treturn dataUser.access( elem, name, data );\n\t},\n\n\tremoveData: function( elem, name ) {\n\t\tdataUser.remove( elem, name );\n\t},\n\n\t// TODO: Now that all calls to _data and _removeData have been replaced\n\t// with direct calls to dataPriv methods, these can be deprecated.\n\t_data: function( elem, name, data ) {\n\t\treturn dataPriv.access( elem, name, data );\n\t},\n\n\t_removeData: function( elem, name ) {\n\t\tdataPriv.remove( elem, name );\n\t}\n} );\n\njQuery.fn.extend( {\n\tdata: function( key, value ) {\n\t\tvar i, name, data,\n\t\t\telem = this[ 0 ],\n\t\t\tattrs = elem && elem.attributes;\n\n\t\t// Gets all values\n\t\tif ( key === undefined ) {\n\t\t\tif ( this.length ) {\n\t\t\t\tdata = dataUser.get( elem );\n\n\t\t\t\tif ( elem.nodeType === 1 && !dataPriv.get( elem, \"hasDataAttrs\" ) ) {\n\t\t\t\t\ti = attrs.length;\n\t\t\t\t\twhile ( i-- ) {\n\n\t\t\t\t\t\t// Support: IE 11 only\n\t\t\t\t\t\t// The attrs elements can be null (trac-14894)\n\t\t\t\t\t\tif ( attrs[ i ] ) {\n\t\t\t\t\t\t\tname = attrs[ i ].name;\n\t\t\t\t\t\t\tif ( name.indexOf( \"data-\" ) === 0 ) {\n\t\t\t\t\t\t\t\tname = camelCase( name.slice( 5 ) );\n\t\t\t\t\t\t\t\tdataAttr( elem, name, data[ name ] );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tdataPriv.set( elem, \"hasDataAttrs\", true );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn data;\n\t\t}\n\n\t\t// Sets multiple values\n\t\tif ( typeof key === \"object\" ) {\n\t\t\treturn this.each( function() {\n\t\t\t\tdataUser.set( this, key );\n\t\t\t} );\n\t\t}\n\n\t\treturn access( this, function( value ) {\n\t\t\tvar data;\n\n\t\t\t// The calling jQuery object (element matches) is not empty\n\t\t\t// (and therefore has an element appears at this[ 0 ]) and the\n\t\t\t// `value` parameter was not undefined. An empty jQuery object\n\t\t\t// will result in `undefined` for elem = this[ 0 ] which will\n\t\t\t// throw an exception if an attempt to read a data cache is made.\n\t\t\tif ( elem && value === undefined ) {\n\n\t\t\t\t// Attempt to get data from the cache\n\t\t\t\t// The key will always be camelCased in Data\n\t\t\t\tdata = dataUser.get( elem, key );\n\t\t\t\tif ( data !== undefined ) {\n\t\t\t\t\treturn data;\n\t\t\t\t}\n\n\t\t\t\t// Attempt to \"discover\" the data in\n\t\t\t\t// HTML5 custom data-* attrs\n\t\t\t\tdata = dataAttr( elem, key );\n\t\t\t\tif ( data !== undefined ) {\n\t\t\t\t\treturn data;\n\t\t\t\t}\n\n\t\t\t\t// We tried really hard, but the data doesn't exist.\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Set the data...\n\t\t\tthis.each( function() {\n\n\t\t\t\t// We always store the camelCased key\n\t\t\t\tdataUser.set( this, key, value );\n\t\t\t} );\n\t\t}, null, value, arguments.length > 1, null, true );\n\t},\n\n\tremoveData: function( key ) {\n\t\treturn this.each( function() {\n\t\t\tdataUser.remove( this, key );\n\t\t} );\n\t}\n} );\n\n\njQuery.extend( {\n\tqueue: function( elem, type, data ) {\n\t\tvar queue;\n\n\t\tif ( elem ) {\n\t\t\ttype = ( type || \"fx\" ) + \"queue\";\n\t\t\tqueue = dataPriv.get( elem, type );\n\n\t\t\t// Speed up dequeue by getting out quickly if this is just a lookup\n\t\t\tif ( data ) {\n\t\t\t\tif ( !queue || Array.isArray( data ) ) {\n\t\t\t\t\tqueue = dataPriv.access( elem, type, jQuery.makeArray( data ) );\n\t\t\t\t} else {\n\t\t\t\t\tqueue.push( data );\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn queue || [];\n\t\t}\n\t},\n\n\tdequeue: function( elem, type ) {\n\t\ttype = type || \"fx\";\n\n\t\tvar queue = jQuery.queue( elem, type ),\n\t\t\tstartLength = queue.length,\n\t\t\tfn = queue.shift(),\n\t\t\thooks = jQuery._queueHooks( elem, type ),\n\t\t\tnext = function() {\n\t\t\t\tjQuery.dequeue( elem, type );\n\t\t\t};\n\n\t\t// If the fx queue is dequeued, always remove the progress sentinel\n\t\tif ( fn === \"inprogress\" ) {\n\t\t\tfn = queue.shift();\n\t\t\tstartLength--;\n\t\t}\n\n\t\tif ( fn ) {\n\n\t\t\t// Add a progress sentinel to prevent the fx queue from being\n\t\t\t// automatically dequeued\n\t\t\tif ( type === \"fx\" ) {\n\t\t\t\tqueue.unshift( \"inprogress\" );\n\t\t\t}\n\n\t\t\t// Clear up the last queue stop function\n\t\t\tdelete hooks.stop;\n\t\t\tfn.call( elem, next, hooks );\n\t\t}\n\n\t\tif ( !startLength && hooks ) {\n\t\t\thooks.empty.fire();\n\t\t}\n\t},\n\n\t// Not public - generate a queueHooks object, or return the current one\n\t_queueHooks: function( elem, type ) {\n\t\tvar key = type + \"queueHooks\";\n\t\treturn dataPriv.get( elem, key ) || dataPriv.access( elem, key, {\n\t\t\tempty: jQuery.Callbacks( \"once memory\" ).add( function() {\n\t\t\t\tdataPriv.remove( elem, [ type + \"queue\", key ] );\n\t\t\t} )\n\t\t} );\n\t}\n} );\n\njQuery.fn.extend( {\n\tqueue: function( type, data ) {\n\t\tvar setter = 2;\n\n\t\tif ( typeof type !== \"string\" ) {\n\t\t\tdata = type;\n\t\t\ttype = \"fx\";\n\t\t\tsetter--;\n\t\t}\n\n\t\tif ( arguments.length < setter ) {\n\t\t\treturn jQuery.queue( this[ 0 ], type );\n\t\t}\n\n\t\treturn data === undefined ?\n\t\t\tthis :\n\t\t\tthis.each( function() {\n\t\t\t\tvar queue = jQuery.queue( this, type, data );\n\n\t\t\t\t// Ensure a hooks for this queue\n\t\t\t\tjQuery._queueHooks( this, type );\n\n\t\t\t\tif ( type === \"fx\" && queue[ 0 ] !== \"inprogress\" ) {\n\t\t\t\t\tjQuery.dequeue( this, type );\n\t\t\t\t}\n\t\t\t} );\n\t},\n\tdequeue: function( type ) {\n\t\treturn this.each( function() {\n\t\t\tjQuery.dequeue( this, type );\n\t\t} );\n\t},\n\tclearQueue: function( type ) {\n\t\treturn this.queue( type || \"fx\", [] );\n\t},\n\n\t// Get a promise resolved when queues of a certain type\n\t// are emptied (fx is the type by default)\n\tpromise: function( type, obj ) {\n\t\tvar tmp,\n\t\t\tcount = 1,\n\t\t\tdefer = jQuery.Deferred(),\n\t\t\telements = this,\n\t\t\ti = this.length,\n\t\t\tresolve = function() {\n\t\t\t\tif ( !( --count ) ) {\n\t\t\t\t\tdefer.resolveWith( elements, [ elements ] );\n\t\t\t\t}\n\t\t\t};\n\n\t\tif ( typeof type !== \"string\" ) {\n\t\t\tobj = type;\n\t\t\ttype = undefined;\n\t\t}\n\t\ttype = type || \"fx\";\n\n\t\twhile ( i-- ) {\n\t\t\ttmp = dataPriv.get( elements[ i ], type + \"queueHooks\" );\n\t\t\tif ( tmp && tmp.empty ) {\n\t\t\t\tcount++;\n\t\t\t\ttmp.empty.add( resolve );\n\t\t\t}\n\t\t}\n\t\tresolve();\n\t\treturn defer.promise( obj );\n\t}\n} );\nvar pnum = ( /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/ ).source;\n\nvar rcssNum = new RegExp( \"^(?:([+-])=|)(\" + pnum + \")([a-z%]*)$\", \"i\" );\n\n\nvar cssExpand = [ \"Top\", \"Right\", \"Bottom\", \"Left\" ];\n\nvar documentElement = document.documentElement;\n\n\n\n\tvar isAttached = function( elem ) {\n\t\t\treturn jQuery.contains( elem.ownerDocument, elem );\n\t\t},\n\t\tcomposed = { composed: true };\n\n\t// Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only\n\t// Check attachment across shadow DOM boundaries when possible (gh-3504)\n\t// Support: iOS 10.0-10.2 only\n\t// Early iOS 10 versions support `attachShadow` but not `getRootNode`,\n\t// leading to errors. We need to check for `getRootNode`.\n\tif ( documentElement.getRootNode ) {\n\t\tisAttached = function( elem ) {\n\t\t\treturn jQuery.contains( elem.ownerDocument, elem ) ||\n\t\t\t\telem.getRootNode( composed ) === elem.ownerDocument;\n\t\t};\n\t}\nvar isHiddenWithinTree = function( elem, el ) {\n\n\t\t// isHiddenWithinTree might be called from jQuery#filter function;\n\t\t// in that case, element will be second argument\n\t\telem = el || elem;\n\n\t\t// Inline style trumps all\n\t\treturn elem.style.display === \"none\" ||\n\t\t\telem.style.display === \"\" &&\n\n\t\t\t// Otherwise, check computed style\n\t\t\t// Support: Firefox <=43 - 45\n\t\t\t// Disconnected elements can have computed display: none, so first confirm that elem is\n\t\t\t// in the document.\n\t\t\tisAttached( elem ) &&\n\n\t\t\tjQuery.css( elem, \"display\" ) === \"none\";\n\t};\n\n\n\nfunction adjustCSS( elem, prop, valueParts, tween ) {\n\tvar adjusted, scale,\n\t\tmaxIterations = 20,\n\t\tcurrentValue = tween ?\n\t\t\tfunction() {\n\t\t\t\treturn tween.cur();\n\t\t\t} :\n\t\t\tfunction() {\n\t\t\t\treturn jQuery.css( elem, prop, \"\" );\n\t\t\t},\n\t\tinitial = currentValue(),\n\t\tunit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? \"\" : \"px\" ),\n\n\t\t// Starting value computation is required for potential unit mismatches\n\t\tinitialInUnit = elem.nodeType &&\n\t\t\t( jQuery.cssNumber[ prop ] || unit !== \"px\" && +initial ) &&\n\t\t\trcssNum.exec( jQuery.css( elem, prop ) );\n\n\tif ( initialInUnit && initialInUnit[ 3 ] !== unit ) {\n\n\t\t// Support: Firefox <=54\n\t\t// Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144)\n\t\tinitial = initial / 2;\n\n\t\t// Trust units reported by jQuery.css\n\t\tunit = unit || initialInUnit[ 3 ];\n\n\t\t// Iteratively approximate from a nonzero starting point\n\t\tinitialInUnit = +initial || 1;\n\n\t\twhile ( maxIterations-- ) {\n\n\t\t\t// Evaluate and update our best guess (doubling guesses that zero out).\n\t\t\t// Finish if the scale equals or crosses 1 (making the old*new product non-positive).\n\t\t\tjQuery.style( elem, prop, initialInUnit + unit );\n\t\t\tif ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) {\n\t\t\t\tmaxIterations = 0;\n\t\t\t}\n\t\t\tinitialInUnit = initialInUnit / scale;\n\n\t\t}\n\n\t\tinitialInUnit = initialInUnit * 2;\n\t\tjQuery.style( elem, prop, initialInUnit + unit );\n\n\t\t// Make sure we update the tween properties later on\n\t\tvalueParts = valueParts || [];\n\t}\n\n\tif ( valueParts ) {\n\t\tinitialInUnit = +initialInUnit || +initial || 0;\n\n\t\t// Apply relative offset (+=/-=) if specified\n\t\tadjusted = valueParts[ 1 ] ?\n\t\t\tinitialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] :\n\t\t\t+valueParts[ 2 ];\n\t\tif ( tween ) {\n\t\t\ttween.unit = unit;\n\t\t\ttween.start = initialInUnit;\n\t\t\ttween.end = adjusted;\n\t\t}\n\t}\n\treturn adjusted;\n}\n\n\nvar defaultDisplayMap = {};\n\nfunction getDefaultDisplay( elem ) {\n\tvar temp,\n\t\tdoc = elem.ownerDocument,\n\t\tnodeName = elem.nodeName,\n\t\tdisplay = defaultDisplayMap[ nodeName ];\n\n\tif ( display ) {\n\t\treturn display;\n\t}\n\n\ttemp = doc.body.appendChild( doc.createElement( nodeName ) );\n\tdisplay = jQuery.css( temp, \"display\" );\n\n\ttemp.parentNode.removeChild( temp );\n\n\tif ( display === \"none\" ) {\n\t\tdisplay = \"block\";\n\t}\n\tdefaultDisplayMap[ nodeName ] = display;\n\n\treturn display;\n}\n\nfunction showHide( elements, show ) {\n\tvar display, elem,\n\t\tvalues = [],\n\t\tindex = 0,\n\t\tlength = elements.length;\n\n\t// Determine new display value for elements that need to change\n\tfor ( ; index < length; index++ ) {\n\t\telem = elements[ index ];\n\t\tif ( !elem.style ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\tdisplay = elem.style.display;\n\t\tif ( show ) {\n\n\t\t\t// Since we force visibility upon cascade-hidden elements, an immediate (and slow)\n\t\t\t// check is required in this first loop unless we have a nonempty display value (either\n\t\t\t// inline or about-to-be-restored)\n\t\t\tif ( display === \"none\" ) {\n\t\t\t\tvalues[ index ] = dataPriv.get( elem, \"display\" ) || null;\n\t\t\t\tif ( !values[ index ] ) {\n\t\t\t\t\telem.style.display = \"\";\n\t\t\t\t}\n\t\t\t}\n\t\t\tif ( elem.style.display === \"\" && isHiddenWithinTree( elem ) ) {\n\t\t\t\tvalues[ index ] = getDefaultDisplay( elem );\n\t\t\t}\n\t\t} else {\n\t\t\tif ( display !== \"none\" ) {\n\t\t\t\tvalues[ index ] = \"none\";\n\n\t\t\t\t// Remember what we're overwriting\n\t\t\t\tdataPriv.set( elem, \"display\", display );\n\t\t\t}\n\t\t}\n\t}\n\n\t// Set the display of the elements in a second loop to avoid constant reflow\n\tfor ( index = 0; index < length; index++ ) {\n\t\tif ( values[ index ] != null ) {\n\t\t\telements[ index ].style.display = values[ index ];\n\t\t}\n\t}\n\n\treturn elements;\n}\n\njQuery.fn.extend( {\n\tshow: function() {\n\t\treturn showHide( this, true );\n\t},\n\thide: function() {\n\t\treturn showHide( this );\n\t},\n\ttoggle: function( state ) {\n\t\tif ( typeof state === \"boolean\" ) {\n\t\t\treturn state ? this.show() : this.hide();\n\t\t}\n\n\t\treturn this.each( function() {\n\t\t\tif ( isHiddenWithinTree( this ) ) {\n\t\t\t\tjQuery( this ).show();\n\t\t\t} else {\n\t\t\t\tjQuery( this ).hide();\n\t\t\t}\n\t\t} );\n\t}\n} );\nvar rcheckableType = ( /^(?:checkbox|radio)$/i );\n\nvar rtagName = ( /<([a-z][^\\/\\0>\\x20\\t\\r\\n\\f]*)/i );\n\nvar rscriptType = ( /^$|^module$|\\/(?:java|ecma)script/i );\n\n\n\n( function() {\n\tvar fragment = document.createDocumentFragment(),\n\t\tdiv = fragment.appendChild( document.createElement( \"div\" ) ),\n\t\tinput = document.createElement( \"input\" );\n\n\t// Support: Android 4.0 - 4.3 only\n\t// Check state lost if the name is set (trac-11217)\n\t// Support: Windows Web Apps (WWA)\n\t// `name` and `type` must use .setAttribute for WWA (trac-14901)\n\tinput.setAttribute( \"type\", \"radio\" );\n\tinput.setAttribute( \"checked\", \"checked\" );\n\tinput.setAttribute( \"name\", \"t\" );\n\n\tdiv.appendChild( input );\n\n\t// Support: Android <=4.1 only\n\t// Older WebKit doesn't clone checked state correctly in fragments\n\tsupport.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;\n\n\t// Support: IE <=11 only\n\t// Make sure textarea (and checkbox) defaultValue is properly cloned\n\tdiv.innerHTML = \"<textarea>x</textarea>\";\n\tsupport.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;\n\n\t// Support: IE <=9 only\n\t// IE <=9 replaces <option> tags with their contents when inserted outside of\n\t// the select element.\n\tdiv.innerHTML = \"<option></option>\";\n\tsupport.option = !!div.lastChild;\n} )();\n\n\n// We have to close these tags to support XHTML (trac-13200)\nvar wrapMap = {\n\n\t// XHTML parsers do not magically insert elements in the\n\t// same way that tag soup parsers do. So we cannot shorten\n\t// this by omitting <tbody> or other required elements.\n\tthead: [ 1, \"<table>\", \"</table>\" ],\n\tcol: [ 2, \"<table><colgroup>\", \"</colgroup></table>\" ],\n\ttr: [ 2, \"<table><tbody>\", \"</tbody></table>\" ],\n\ttd: [ 3, \"<table><tbody><tr>\", \"</tr></tbody></table>\" ],\n\n\t_default: [ 0, \"\", \"\" ]\n};\n\nwrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;\nwrapMap.th = wrapMap.td;\n\n// Support: IE <=9 only\nif ( !support.option ) {\n\twrapMap.optgroup = wrapMap.option = [ 1, \"<select multiple='multiple'>\", \"</select>\" ];\n}\n\n\nfunction getAll( context, tag ) {\n\n\t// Support: IE <=9 - 11 only\n\t// Use typeof to avoid zero-argument method invocation on host objects (trac-15151)\n\tvar ret;\n\n\tif ( typeof context.getElementsByTagName !== \"undefined\" ) {\n\t\tret = context.getElementsByTagName( tag || \"*\" );\n\n\t} else if ( typeof context.querySelectorAll !== \"undefined\" ) {\n\t\tret = context.querySelectorAll( tag || \"*\" );\n\n\t} else {\n\t\tret = [];\n\t}\n\n\tif ( tag === undefined || tag && nodeName( context, tag ) ) {\n\t\treturn jQuery.merge( [ context ], ret );\n\t}\n\n\treturn ret;\n}\n\n\n// Mark scripts as having already been evaluated\nfunction setGlobalEval( elems, refElements ) {\n\tvar i = 0,\n\t\tl = elems.length;\n\n\tfor ( ; i < l; i++ ) {\n\t\tdataPriv.set(\n\t\t\telems[ i ],\n\t\t\t\"globalEval\",\n\t\t\t!refElements || dataPriv.get( refElements[ i ], \"globalEval\" )\n\t\t);\n\t}\n}\n\n\nvar rhtml = /<|&#?\\w+;/;\n\nfunction buildFragment( elems, context, scripts, selection, ignored ) {\n\tvar elem, tmp, tag, wrap, attached, j,\n\t\tfragment = context.createDocumentFragment(),\n\t\tnodes = [],\n\t\ti = 0,\n\t\tl = elems.length;\n\n\tfor ( ; i < l; i++ ) {\n\t\telem = elems[ i ];\n\n\t\tif ( elem || elem === 0 ) {\n\n\t\t\t// Add nodes directly\n\t\t\tif ( toType( elem ) === \"object\" ) {\n\n\t\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t\t// push.apply(_, arraylike) throws on ancient WebKit\n\t\t\t\tjQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );\n\n\t\t\t// Convert non-html into a text node\n\t\t\t} else if ( !rhtml.test( elem ) ) {\n\t\t\t\tnodes.push( context.createTextNode( elem ) );\n\n\t\t\t// Convert html into DOM nodes\n\t\t\t} else {\n\t\t\t\ttmp = tmp || fragment.appendChild( context.createElement( \"div\" ) );\n\n\t\t\t\t// Deserialize a standard representation\n\t\t\t\ttag = ( rtagName.exec( elem ) || [ \"\", \"\" ] )[ 1 ].toLowerCase();\n\t\t\t\twrap = wrapMap[ tag ] || wrapMap._default;\n\t\t\t\ttmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ];\n\n\t\t\t\t// Descend through wrappers to the right content\n\t\t\t\tj = wrap[ 0 ];\n\t\t\t\twhile ( j-- ) {\n\t\t\t\t\ttmp = tmp.lastChild;\n\t\t\t\t}\n\n\t\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t\t// push.apply(_, arraylike) throws on ancient WebKit\n\t\t\t\tjQuery.merge( nodes, tmp.childNodes );\n\n\t\t\t\t// Remember the top-level container\n\t\t\t\ttmp = fragment.firstChild;\n\n\t\t\t\t// Ensure the created nodes are orphaned (trac-12392)\n\t\t\t\ttmp.textContent = \"\";\n\t\t\t}\n\t\t}\n\t}\n\n\t// Remove wrapper from fragment\n\tfragment.textContent = \"\";\n\n\ti = 0;\n\twhile ( ( elem = nodes[ i++ ] ) ) {\n\n\t\t// Skip elements already in the context collection (trac-4087)\n\t\tif ( selection && jQuery.inArray( elem, selection ) > -1 ) {\n\t\t\tif ( ignored ) {\n\t\t\t\tignored.push( elem );\n\t\t\t}\n\t\t\tcontinue;\n\t\t}\n\n\t\tattached = isAttached( elem );\n\n\t\t// Append to fragment\n\t\ttmp = getAll( fragment.appendChild( elem ), \"script\" );\n\n\t\t// Preserve script evaluation history\n\t\tif ( attached ) {\n\t\t\tsetGlobalEval( tmp );\n\t\t}\n\n\t\t// Capture executables\n\t\tif ( scripts ) {\n\t\t\tj = 0;\n\t\t\twhile ( ( elem = tmp[ j++ ] ) ) {\n\t\t\t\tif ( rscriptType.test( elem.type || \"\" ) ) {\n\t\t\t\t\tscripts.push( elem );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn fragment;\n}\n\n\nvar rtypenamespace = /^([^.]*)(?:\\.(.+)|)/;\n\nfunction returnTrue() {\n\treturn true;\n}\n\nfunction returnFalse() {\n\treturn false;\n}\n\nfunction on( elem, types, selector, data, fn, one ) {\n\tvar origFn, type;\n\n\t// Types can be a map of types/handlers\n\tif ( typeof types === \"object\" ) {\n\n\t\t// ( types-Object, selector, data )\n\t\tif ( typeof selector !== \"string\" ) {\n\n\t\t\t// ( types-Object, data )\n\t\t\tdata = data || selector;\n\t\t\tselector = undefined;\n\t\t}\n\t\tfor ( type in types ) {\n\t\t\ton( elem, type, selector, data, types[ type ], one );\n\t\t}\n\t\treturn elem;\n\t}\n\n\tif ( data == null && fn == null ) {\n\n\t\t// ( types, fn )\n\t\tfn = selector;\n\t\tdata = selector = undefined;\n\t} else if ( fn == null ) {\n\t\tif ( typeof selector === \"string\" ) {\n\n\t\t\t// ( types, selector, fn )\n\t\t\tfn = data;\n\t\t\tdata = undefined;\n\t\t} else {\n\n\t\t\t// ( types, data, fn )\n\t\t\tfn = data;\n\t\t\tdata = selector;\n\t\t\tselector = undefined;\n\t\t}\n\t}\n\tif ( fn === false ) {\n\t\tfn = returnFalse;\n\t} else if ( !fn ) {\n\t\treturn elem;\n\t}\n\n\tif ( one === 1 ) {\n\t\torigFn = fn;\n\t\tfn = function( event ) {\n\n\t\t\t// Can use an empty set, since event contains the info\n\t\t\tjQuery().off( event );\n\t\t\treturn origFn.apply( this, arguments );\n\t\t};\n\n\t\t// Use same guid so caller can remove using origFn\n\t\tfn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );\n\t}\n\treturn elem.each( function() {\n\t\tjQuery.event.add( this, types, fn, data, selector );\n\t} );\n}\n\n/*\n * Helper functions for managing events -- not part of the public interface.\n * Props to Dean Edwards' addEvent library for many of the ideas.\n */\njQuery.event = {\n\n\tglobal: {},\n\n\tadd: function( elem, types, handler, data, selector ) {\n\n\t\tvar handleObjIn, eventHandle, tmp,\n\t\t\tevents, t, handleObj,\n\t\t\tspecial, handlers, type, namespaces, origType,\n\t\t\telemData = dataPriv.get( elem );\n\n\t\t// Only attach events to objects that accept data\n\t\tif ( !acceptData( elem ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Caller can pass in an object of custom data in lieu of the handler\n\t\tif ( handler.handler ) {\n\t\t\thandleObjIn = handler;\n\t\t\thandler = handleObjIn.handler;\n\t\t\tselector = handleObjIn.selector;\n\t\t}\n\n\t\t// Ensure that invalid selectors throw exceptions at attach time\n\t\t// Evaluate against documentElement in case elem is a non-element node (e.g., document)\n\t\tif ( selector ) {\n\t\t\tjQuery.find.matchesSelector( documentElement, selector );\n\t\t}\n\n\t\t// Make sure that the handler has a unique ID, used to find/remove it later\n\t\tif ( !handler.guid ) {\n\t\t\thandler.guid = jQuery.guid++;\n\t\t}\n\n\t\t// Init the element's event structure and main handler, if this is the first\n\t\tif ( !( events = elemData.events ) ) {\n\t\t\tevents = elemData.events = Object.create( null );\n\t\t}\n\t\tif ( !( eventHandle = elemData.handle ) ) {\n\t\t\teventHandle = elemData.handle = function( e ) {\n\n\t\t\t\t// Discard the second event of a jQuery.event.trigger() and\n\t\t\t\t// when an event is called after a page has unloaded\n\t\t\t\treturn typeof jQuery !== \"undefined\" && jQuery.event.triggered !== e.type ?\n\t\t\t\t\tjQuery.event.dispatch.apply( elem, arguments ) : undefined;\n\t\t\t};\n\t\t}\n\n\t\t// Handle multiple events separated by a space\n\t\ttypes = ( types || \"\" ).match( rnothtmlwhite ) || [ \"\" ];\n\t\tt = types.length;\n\t\twhile ( t-- ) {\n\t\t\ttmp = rtypenamespace.exec( types[ t ] ) || [];\n\t\t\ttype = origType = tmp[ 1 ];\n\t\t\tnamespaces = ( tmp[ 2 ] || \"\" ).split( \".\" ).sort();\n\n\t\t\t// There *must* be a type, no attaching namespace-only handlers\n\t\t\tif ( !type ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// If event changes its type, use the special event handlers for the changed type\n\t\t\tspecial = jQuery.event.special[ type ] || {};\n\n\t\t\t// If selector defined, determine special event api type, otherwise given type\n\t\t\ttype = ( selector ? special.delegateType : special.bindType ) || type;\n\n\t\t\t// Update special based on newly reset type\n\t\t\tspecial = jQuery.event.special[ type ] || {};\n\n\t\t\t// handleObj is passed to all event handlers\n\t\t\thandleObj = jQuery.extend( {\n\t\t\t\ttype: type,\n\t\t\t\torigType: origType,\n\t\t\t\tdata: data,\n\t\t\t\thandler: handler,\n\t\t\t\tguid: handler.guid,\n\t\t\t\tselector: selector,\n\t\t\t\tneedsContext: selector && jQuery.expr.match.needsContext.test( selector ),\n\t\t\t\tnamespace: namespaces.join( \".\" )\n\t\t\t}, handleObjIn );\n\n\t\t\t// Init the event handler queue if we're the first\n\t\t\tif ( !( handlers = events[ type ] ) ) {\n\t\t\t\thandlers = events[ type ] = [];\n\t\t\t\thandlers.delegateCount = 0;\n\n\t\t\t\t// Only use addEventListener if the special events handler returns false\n\t\t\t\tif ( !special.setup ||\n\t\t\t\t\tspecial.setup.call( elem, data, namespaces, eventHandle ) === false ) {\n\n\t\t\t\t\tif ( elem.addEventListener ) {\n\t\t\t\t\t\telem.addEventListener( type, eventHandle );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( special.add ) {\n\t\t\t\tspecial.add.call( elem, handleObj );\n\n\t\t\t\tif ( !handleObj.handler.guid ) {\n\t\t\t\t\thandleObj.handler.guid = handler.guid;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Add to the element's handler list, delegates in front\n\t\t\tif ( selector ) {\n\t\t\t\thandlers.splice( handlers.delegateCount++, 0, handleObj );\n\t\t\t} else {\n\t\t\t\thandlers.push( handleObj );\n\t\t\t}\n\n\t\t\t// Keep track of which events have ever been used, for event optimization\n\t\t\tjQuery.event.global[ type ] = true;\n\t\t}\n\n\t},\n\n\t// Detach an event or set of events from an element\n\tremove: function( elem, types, handler, selector, mappedTypes ) {\n\n\t\tvar j, origCount, tmp,\n\t\t\tevents, t, handleObj,\n\t\t\tspecial, handlers, type, namespaces, origType,\n\t\t\telemData = dataPriv.hasData( elem ) && dataPriv.get( elem );\n\n\t\tif ( !elemData || !( events = elemData.events ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Once for each type.namespace in types; type may be omitted\n\t\ttypes = ( types || \"\" ).match( rnothtmlwhite ) || [ \"\" ];\n\t\tt = types.length;\n\t\twhile ( t-- ) {\n\t\t\ttmp = rtypenamespace.exec( types[ t ] ) || [];\n\t\t\ttype = origType = tmp[ 1 ];\n\t\t\tnamespaces = ( tmp[ 2 ] || \"\" ).split( \".\" ).sort();\n\n\t\t\t// Unbind all events (on this namespace, if provided) for the element\n\t\t\tif ( !type ) {\n\t\t\t\tfor ( type in events ) {\n\t\t\t\t\tjQuery.event.remove( elem, type + types[ t ], handler, selector, true );\n\t\t\t\t}\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tspecial = jQuery.event.special[ type ] || {};\n\t\t\ttype = ( selector ? special.delegateType : special.bindType ) || type;\n\t\t\thandlers = events[ type ] || [];\n\t\t\ttmp = tmp[ 2 ] &&\n\t\t\t\tnew RegExp( \"(^|\\\\.)\" + namespaces.join( \"\\\\.(?:.*\\\\.|)\" ) + \"(\\\\.|$)\" );\n\n\t\t\t// Remove matching events\n\t\t\torigCount = j = handlers.length;\n\t\t\twhile ( j-- ) {\n\t\t\t\thandleObj = handlers[ j ];\n\n\t\t\t\tif ( ( mappedTypes || origType === handleObj.origType ) &&\n\t\t\t\t\t( !handler || handler.guid === handleObj.guid ) &&\n\t\t\t\t\t( !tmp || tmp.test( handleObj.namespace ) ) &&\n\t\t\t\t\t( !selector || selector === handleObj.selector ||\n\t\t\t\t\t\tselector === \"**\" && handleObj.selector ) ) {\n\t\t\t\t\thandlers.splice( j, 1 );\n\n\t\t\t\t\tif ( handleObj.selector ) {\n\t\t\t\t\t\thandlers.delegateCount--;\n\t\t\t\t\t}\n\t\t\t\t\tif ( special.remove ) {\n\t\t\t\t\t\tspecial.remove.call( elem, handleObj );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Remove generic event handler if we removed something and no more handlers exist\n\t\t\t// (avoids potential for endless recursion during removal of special event handlers)\n\t\t\tif ( origCount && !handlers.length ) {\n\t\t\t\tif ( !special.teardown ||\n\t\t\t\t\tspecial.teardown.call( elem, namespaces, elemData.handle ) === false ) {\n\n\t\t\t\t\tjQuery.removeEvent( elem, type, elemData.handle );\n\t\t\t\t}\n\n\t\t\t\tdelete events[ type ];\n\t\t\t}\n\t\t}\n\n\t\t// Remove data and the expando if it's no longer used\n\t\tif ( jQuery.isEmptyObject( events ) ) {\n\t\t\tdataPriv.remove( elem, \"handle events\" );\n\t\t}\n\t},\n\n\tdispatch: function( nativeEvent ) {\n\n\t\tvar i, j, ret, matched, handleObj, handlerQueue,\n\t\t\targs = new Array( arguments.length ),\n\n\t\t\t// Make a writable jQuery.Event from the native event object\n\t\t\tevent = jQuery.event.fix( nativeEvent ),\n\n\t\t\thandlers = (\n\t\t\t\tdataPriv.get( this, \"events\" ) || Object.create( null )\n\t\t\t)[ event.type ] || [],\n\t\t\tspecial = jQuery.event.special[ event.type ] || {};\n\n\t\t// Use the fix-ed jQuery.Event rather than the (read-only) native event\n\t\targs[ 0 ] = event;\n\n\t\tfor ( i = 1; i < arguments.length; i++ ) {\n\t\t\targs[ i ] = arguments[ i ];\n\t\t}\n\n\t\tevent.delegateTarget = this;\n\n\t\t// Call the preDispatch hook for the mapped type, and let it bail if desired\n\t\tif ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Determine handlers\n\t\thandlerQueue = jQuery.event.handlers.call( this, event, handlers );\n\n\t\t// Run delegates first; they may want to stop propagation beneath us\n\t\ti = 0;\n\t\twhile ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) {\n\t\t\tevent.currentTarget = matched.elem;\n\n\t\t\tj = 0;\n\t\t\twhile ( ( handleObj = matched.handlers[ j++ ] ) &&\n\t\t\t\t!event.isImmediatePropagationStopped() ) {\n\n\t\t\t\t// If the event is namespaced, then each handler is only invoked if it is\n\t\t\t\t// specially universal or its namespaces are a superset of the event's.\n\t\t\t\tif ( !event.rnamespace || handleObj.namespace === false ||\n\t\t\t\t\tevent.rnamespace.test( handleObj.namespace ) ) {\n\n\t\t\t\t\tevent.handleObj = handleObj;\n\t\t\t\t\tevent.data = handleObj.data;\n\n\t\t\t\t\tret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle ||\n\t\t\t\t\t\thandleObj.handler ).apply( matched.elem, args );\n\n\t\t\t\t\tif ( ret !== undefined ) {\n\t\t\t\t\t\tif ( ( event.result = ret ) === false ) {\n\t\t\t\t\t\t\tevent.preventDefault();\n\t\t\t\t\t\t\tevent.stopPropagation();\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Call the postDispatch hook for the mapped type\n\t\tif ( special.postDispatch ) {\n\t\t\tspecial.postDispatch.call( this, event );\n\t\t}\n\n\t\treturn event.result;\n\t},\n\n\thandlers: function( event, handlers ) {\n\t\tvar i, handleObj, sel, matchedHandlers, matchedSelectors,\n\t\t\thandlerQueue = [],\n\t\t\tdelegateCount = handlers.delegateCount,\n\t\t\tcur = event.target;\n\n\t\t// Find delegate handlers\n\t\tif ( delegateCount &&\n\n\t\t\t// Support: IE <=9\n\t\t\t// Black-hole SVG <use> instance trees (trac-13180)\n\t\t\tcur.nodeType &&\n\n\t\t\t// Support: Firefox <=42\n\t\t\t// Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)\n\t\t\t// https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click\n\t\t\t// Support: IE 11 only\n\t\t\t// ...but not arrow key \"clicks\" of radio inputs, which can have `button` -1 (gh-2343)\n\t\t\t!( event.type === \"click\" && event.button >= 1 ) ) {\n\n\t\t\tfor ( ; cur !== this; cur = cur.parentNode || this ) {\n\n\t\t\t\t// Don't check non-elements (trac-13208)\n\t\t\t\t// Don't process clicks on disabled elements (trac-6911, trac-8165, trac-11382, trac-11764)\n\t\t\t\tif ( cur.nodeType === 1 && !( event.type === \"click\" && cur.disabled === true ) ) {\n\t\t\t\t\tmatchedHandlers = [];\n\t\t\t\t\tmatchedSelectors = {};\n\t\t\t\t\tfor ( i = 0; i < delegateCount; i++ ) {\n\t\t\t\t\t\thandleObj = handlers[ i ];\n\n\t\t\t\t\t\t// Don't conflict with Object.prototype properties (trac-13203)\n\t\t\t\t\t\tsel = handleObj.selector + \" \";\n\n\t\t\t\t\t\tif ( matchedSelectors[ sel ] === undefined ) {\n\t\t\t\t\t\t\tmatchedSelectors[ sel ] = handleObj.needsContext ?\n\t\t\t\t\t\t\t\tjQuery( sel, this ).index( cur ) > -1 :\n\t\t\t\t\t\t\t\tjQuery.find( sel, this, null, [ cur ] ).length;\n\t\t\t\t\t\t}\n\t\t\t\t\t\tif ( matchedSelectors[ sel ] ) {\n\t\t\t\t\t\t\tmatchedHandlers.push( handleObj );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tif ( matchedHandlers.length ) {\n\t\t\t\t\t\thandlerQueue.push( { elem: cur, handlers: matchedHandlers } );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Add the remaining (directly-bound) handlers\n\t\tcur = this;\n\t\tif ( delegateCount < handlers.length ) {\n\t\t\thandlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } );\n\t\t}\n\n\t\treturn handlerQueue;\n\t},\n\n\taddProp: function( name, hook ) {\n\t\tObject.defineProperty( jQuery.Event.prototype, name, {\n\t\t\tenumerable: true,\n\t\t\tconfigurable: true,\n\n\t\t\tget: isFunction( hook ) ?\n\t\t\t\tfunction() {\n\t\t\t\t\tif ( this.originalEvent ) {\n\t\t\t\t\t\treturn hook( this.originalEvent );\n\t\t\t\t\t}\n\t\t\t\t} :\n\t\t\t\tfunction() {\n\t\t\t\t\tif ( this.originalEvent ) {\n\t\t\t\t\t\treturn this.originalEvent[ name ];\n\t\t\t\t\t}\n\t\t\t\t},\n\n\t\t\tset: function( value ) {\n\t\t\t\tObject.defineProperty( this, name, {\n\t\t\t\t\tenumerable: true,\n\t\t\t\t\tconfigurable: true,\n\t\t\t\t\twritable: true,\n\t\t\t\t\tvalue: value\n\t\t\t\t} );\n\t\t\t}\n\t\t} );\n\t},\n\n\tfix: function( originalEvent ) {\n\t\treturn originalEvent[ jQuery.expando ] ?\n\t\t\toriginalEvent :\n\t\t\tnew jQuery.Event( originalEvent );\n\t},\n\n\tspecial: {\n\t\tload: {\n\n\t\t\t// Prevent triggered image.load events from bubbling to window.load\n\t\t\tnoBubble: true\n\t\t},\n\t\tclick: {\n\n\t\t\t// Utilize native event to ensure correct state for checkable inputs\n\t\t\tsetup: function( data ) {\n\n\t\t\t\t// For mutual compressibility with _default, replace `this` access with a local var.\n\t\t\t\t// `|| data` is dead code meant only to preserve the variable through minification.\n\t\t\t\tvar el = this || data;\n\n\t\t\t\t// Claim the first handler\n\t\t\t\tif ( rcheckableType.test( el.type ) &&\n\t\t\t\t\tel.click && nodeName( el, \"input\" ) ) {\n\n\t\t\t\t\t// dataPriv.set( el, \"click\", ... )\n\t\t\t\t\tleverageNative( el, \"click\", true );\n\t\t\t\t}\n\n\t\t\t\t// Return false to allow normal processing in the caller\n\t\t\t\treturn false;\n\t\t\t},\n\t\t\ttrigger: function( data ) {\n\n\t\t\t\t// For mutual compressibility with _default, replace `this` access with a local var.\n\t\t\t\t// `|| data` is dead code meant only to preserve the variable through minification.\n\t\t\t\tvar el = this || data;\n\n\t\t\t\t// Force setup before triggering a click\n\t\t\t\tif ( rcheckableType.test( el.type ) &&\n\t\t\t\t\tel.click && nodeName( el, \"input\" ) ) {\n\n\t\t\t\t\tleverageNative( el, \"click\" );\n\t\t\t\t}\n\n\t\t\t\t// Return non-false to allow normal event-path propagation\n\t\t\t\treturn true;\n\t\t\t},\n\n\t\t\t// For cross-browser consistency, suppress native .click() on links\n\t\t\t// Also prevent it if we're currently inside a leveraged native-event stack\n\t\t\t_default: function( event ) {\n\t\t\t\tvar target = event.target;\n\t\t\t\treturn rcheckableType.test( target.type ) &&\n\t\t\t\t\ttarget.click && nodeName( target, \"input\" ) &&\n\t\t\t\t\tdataPriv.get( target, \"click\" ) ||\n\t\t\t\t\tnodeName( target, \"a\" );\n\t\t\t}\n\t\t},\n\n\t\tbeforeunload: {\n\t\t\tpostDispatch: function( event ) {\n\n\t\t\t\t// Support: Firefox 20+\n\t\t\t\t// Firefox doesn't alert if the returnValue field is not set.\n\t\t\t\tif ( event.result !== undefined && event.originalEvent ) {\n\t\t\t\t\tevent.originalEvent.returnValue = event.result;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n};\n\n// Ensure the presence of an event listener that handles manually-triggered\n// synthetic events by interrupting progress until reinvoked in response to\n// *native* events that it fires directly, ensuring that state changes have\n// already occurred before other listeners are invoked.\nfunction leverageNative( el, type, isSetup ) {\n\n\t// Missing `isSetup` indicates a trigger call, which must force setup through jQuery.event.add\n\tif ( !isSetup ) {\n\t\tif ( dataPriv.get( el, type ) === undefined ) {\n\t\t\tjQuery.event.add( el, type, returnTrue );\n\t\t}\n\t\treturn;\n\t}\n\n\t// Register the controller as a special universal handler for all event namespaces\n\tdataPriv.set( el, type, false );\n\tjQuery.event.add( el, type, {\n\t\tnamespace: false,\n\t\thandler: function( event ) {\n\t\t\tvar result,\n\t\t\t\tsaved = dataPriv.get( this, type );\n\n\t\t\tif ( ( event.isTrigger & 1 ) && this[ type ] ) {\n\n\t\t\t\t// Interrupt processing of the outer synthetic .trigger()ed event\n\t\t\t\tif ( !saved ) {\n\n\t\t\t\t\t// Store arguments for use when handling the inner native event\n\t\t\t\t\t// There will always be at least one argument (an event object), so this array\n\t\t\t\t\t// will not be confused with a leftover capture object.\n\t\t\t\t\tsaved = slice.call( arguments );\n\t\t\t\t\tdataPriv.set( this, type, saved );\n\n\t\t\t\t\t// Trigger the native event and capture its result\n\t\t\t\t\tthis[ type ]();\n\t\t\t\t\tresult = dataPriv.get( this, type );\n\t\t\t\t\tdataPriv.set( this, type, false );\n\n\t\t\t\t\tif ( saved !== result ) {\n\n\t\t\t\t\t\t// Cancel the outer synthetic event\n\t\t\t\t\t\tevent.stopImmediatePropagation();\n\t\t\t\t\t\tevent.preventDefault();\n\n\t\t\t\t\t\treturn result;\n\t\t\t\t\t}\n\n\t\t\t\t// If this is an inner synthetic event for an event with a bubbling surrogate\n\t\t\t\t// (focus or blur), assume that the surrogate already propagated from triggering\n\t\t\t\t// the native event and prevent that from happening again here.\n\t\t\t\t// This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the\n\t\t\t\t// bubbling surrogate propagates *after* the non-bubbling base), but that seems\n\t\t\t\t// less bad than duplication.\n\t\t\t\t} else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) {\n\t\t\t\t\tevent.stopPropagation();\n\t\t\t\t}\n\n\t\t\t// If this is a native event triggered above, everything is now in order\n\t\t\t// Fire an inner synthetic event with the original arguments\n\t\t\t} else if ( saved ) {\n\n\t\t\t\t// ...and capture the result\n\t\t\t\tdataPriv.set( this, type, jQuery.event.trigger(\n\t\t\t\t\tsaved[ 0 ],\n\t\t\t\t\tsaved.slice( 1 ),\n\t\t\t\t\tthis\n\t\t\t\t) );\n\n\t\t\t\t// Abort handling of the native event by all jQuery handlers while allowing\n\t\t\t\t// native handlers on the same element to run. On target, this is achieved\n\t\t\t\t// by stopping immediate propagation just on the jQuery event. However,\n\t\t\t\t// the native event is re-wrapped by a jQuery one on each level of the\n\t\t\t\t// propagation so the only way to stop it for jQuery is to stop it for\n\t\t\t\t// everyone via native `stopPropagation()`. This is not a problem for\n\t\t\t\t// focus/blur which don't bubble, but it does also stop click on checkboxes\n\t\t\t\t// and radios. We accept this limitation.\n\t\t\t\tevent.stopPropagation();\n\t\t\t\tevent.isImmediatePropagationStopped = returnTrue;\n\t\t\t}\n\t\t}\n\t} );\n}\n\njQuery.removeEvent = function( elem, type, handle ) {\n\n\t// This \"if\" is needed for plain objects\n\tif ( elem.removeEventListener ) {\n\t\telem.removeEventListener( type, handle );\n\t}\n};\n\njQuery.Event = function( src, props ) {\n\n\t// Allow instantiation without the 'new' keyword\n\tif ( !( this instanceof jQuery.Event ) ) {\n\t\treturn new jQuery.Event( src, props );\n\t}\n\n\t// Event object\n\tif ( src && src.type ) {\n\t\tthis.originalEvent = src;\n\t\tthis.type = src.type;\n\n\t\t// Events bubbling up the document may have been marked as prevented\n\t\t// by a handler lower down the tree; reflect the correct value.\n\t\tthis.isDefaultPrevented = src.defaultPrevented ||\n\t\t\t\tsrc.defaultPrevented === undefined &&\n\n\t\t\t\t// Support: Android <=2.3 only\n\t\t\t\tsrc.returnValue === false ?\n\t\t\treturnTrue :\n\t\t\treturnFalse;\n\n\t\t// Create target properties\n\t\t// Support: Safari <=6 - 7 only\n\t\t// Target should not be a text node (trac-504, trac-13143)\n\t\tthis.target = ( src.target && src.target.nodeType === 3 ) ?\n\t\t\tsrc.target.parentNode :\n\t\t\tsrc.target;\n\n\t\tthis.currentTarget = src.currentTarget;\n\t\tthis.relatedTarget = src.relatedTarget;\n\n\t// Event type\n\t} else {\n\t\tthis.type = src;\n\t}\n\n\t// Put explicitly provided properties onto the event object\n\tif ( props ) {\n\t\tjQuery.extend( this, props );\n\t}\n\n\t// Create a timestamp if incoming event doesn't have one\n\tthis.timeStamp = src && src.timeStamp || Date.now();\n\n\t// Mark it as fixed\n\tthis[ jQuery.expando ] = true;\n};\n\n// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding\n// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html\njQuery.Event.prototype = {\n\tconstructor: jQuery.Event,\n\tisDefaultPrevented: returnFalse,\n\tisPropagationStopped: returnFalse,\n\tisImmediatePropagationStopped: returnFalse,\n\tisSimulated: false,\n\n\tpreventDefault: function() {\n\t\tvar e = this.originalEvent;\n\n\t\tthis.isDefaultPrevented = returnTrue;\n\n\t\tif ( e && !this.isSimulated ) {\n\t\t\te.preventDefault();\n\t\t}\n\t},\n\tstopPropagation: function() {\n\t\tvar e = this.originalEvent;\n\n\t\tthis.isPropagationStopped = returnTrue;\n\n\t\tif ( e && !this.isSimulated ) {\n\t\t\te.stopPropagation();\n\t\t}\n\t},\n\tstopImmediatePropagation: function() {\n\t\tvar e = this.originalEvent;\n\n\t\tthis.isImmediatePropagationStopped = returnTrue;\n\n\t\tif ( e && !this.isSimulated ) {\n\t\t\te.stopImmediatePropagation();\n\t\t}\n\n\t\tthis.stopPropagation();\n\t}\n};\n\n// Includes all common event props including KeyEvent and MouseEvent specific props\njQuery.each( {\n\taltKey: true,\n\tbubbles: true,\n\tcancelable: true,\n\tchangedTouches: true,\n\tctrlKey: true,\n\tdetail: true,\n\teventPhase: true,\n\tmetaKey: true,\n\tpageX: true,\n\tpageY: true,\n\tshiftKey: true,\n\tview: true,\n\t\"char\": true,\n\tcode: true,\n\tcharCode: true,\n\tkey: true,\n\tkeyCode: true,\n\tbutton: true,\n\tbuttons: true,\n\tclientX: true,\n\tclientY: true,\n\toffsetX: true,\n\toffsetY: true,\n\tpointerId: true,\n\tpointerType: true,\n\tscreenX: true,\n\tscreenY: true,\n\ttargetTouches: true,\n\ttoElement: true,\n\ttouches: true,\n\twhich: true\n}, jQuery.event.addProp );\n\njQuery.each( { focus: \"focusin\", blur: \"focusout\" }, function( type, delegateType ) {\n\n\tfunction focusMappedHandler( nativeEvent ) {\n\t\tif ( document.documentMode ) {\n\n\t\t\t// Support: IE 11+\n\t\t\t// Attach a single focusin/focusout handler on the document while someone wants\n\t\t\t// focus/blur. This is because the former are synchronous in IE while the latter\n\t\t\t// are async. In other browsers, all those handlers are invoked synchronously.\n\n\t\t\t// `handle` from private data would already wrap the event, but we need\n\t\t\t// to change the `type` here.\n\t\t\tvar handle = dataPriv.get( this, \"handle\" ),\n\t\t\t\tevent = jQuery.event.fix( nativeEvent );\n\t\t\tevent.type = nativeEvent.type === \"focusin\" ? \"focus\" : \"blur\";\n\t\t\tevent.isSimulated = true;\n\n\t\t\t// First, handle focusin/focusout\n\t\t\thandle( nativeEvent );\n\n\t\t\t// ...then, handle focus/blur\n\t\t\t//\n\t\t\t// focus/blur don't bubble while focusin/focusout do; simulate the former by only\n\t\t\t// invoking the handler at the lower level.\n\t\t\tif ( event.target === event.currentTarget ) {\n\n\t\t\t\t// The setup part calls `leverageNative`, which, in turn, calls\n\t\t\t\t// `jQuery.event.add`, so event handle will already have been set\n\t\t\t\t// by this point.\n\t\t\t\thandle( event );\n\t\t\t}\n\t\t} else {\n\n\t\t\t// For non-IE browsers, attach a single capturing handler on the document\n\t\t\t// while someone wants focusin/focusout.\n\t\t\tjQuery.event.simulate( delegateType, nativeEvent.target,\n\t\t\t\tjQuery.event.fix( nativeEvent ) );\n\t\t}\n\t}\n\n\tjQuery.event.special[ type ] = {\n\n\t\t// Utilize native event if possible so blur/focus sequence is correct\n\t\tsetup: function() {\n\n\t\t\tvar attaches;\n\n\t\t\t// Claim the first handler\n\t\t\t// dataPriv.set( this, \"focus\", ... )\n\t\t\t// dataPriv.set( this, \"blur\", ... )\n\t\t\tleverageNative( this, type, true );\n\n\t\t\tif ( document.documentMode ) {\n\n\t\t\t\t// Support: IE 9 - 11+\n\t\t\t\t// We use the same native handler for focusin & focus (and focusout & blur)\n\t\t\t\t// so we need to coordinate setup & teardown parts between those events.\n\t\t\t\t// Use `delegateType` as the key as `type` is already used by `leverageNative`.\n\t\t\t\tattaches = dataPriv.get( this, delegateType );\n\t\t\t\tif ( !attaches ) {\n\t\t\t\t\tthis.addEventListener( delegateType, focusMappedHandler );\n\t\t\t\t}\n\t\t\t\tdataPriv.set( this, delegateType, ( attaches || 0 ) + 1 );\n\t\t\t} else {\n\n\t\t\t\t// Return false to allow normal processing in the caller\n\t\t\t\treturn false;\n\t\t\t}\n\t\t},\n\t\ttrigger: function() {\n\n\t\t\t// Force setup before trigger\n\t\t\tleverageNative( this, type );\n\n\t\t\t// Return non-false to allow normal event-path propagation\n\t\t\treturn true;\n\t\t},\n\n\t\tteardown: function() {\n\t\t\tvar attaches;\n\n\t\t\tif ( document.documentMode ) {\n\t\t\t\tattaches = dataPriv.get( this, delegateType ) - 1;\n\t\t\t\tif ( !attaches ) {\n\t\t\t\t\tthis.removeEventListener( delegateType, focusMappedHandler );\n\t\t\t\t\tdataPriv.remove( this, delegateType );\n\t\t\t\t} else {\n\t\t\t\t\tdataPriv.set( this, delegateType, attaches );\n\t\t\t\t}\n\t\t\t} else {\n\n\t\t\t\t// Return false to indicate standard teardown should be applied\n\t\t\t\treturn false;\n\t\t\t}\n\t\t},\n\n\t\t// Suppress native focus or blur if we're currently inside\n\t\t// a leveraged native-event stack\n\t\t_default: function( event ) {\n\t\t\treturn dataPriv.get( event.target, type );\n\t\t},\n\n\t\tdelegateType: delegateType\n\t};\n\n\t// Support: Firefox <=44\n\t// Firefox doesn't have focus(in | out) events\n\t// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787\n\t//\n\t// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1\n\t// focus(in | out) events fire after focus & blur events,\n\t// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order\n\t// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857\n\t//\n\t// Support: IE 9 - 11+\n\t// To preserve relative focusin/focus & focusout/blur event order guaranteed on the 3.x branch,\n\t// attach a single handler for both events in IE.\n\tjQuery.event.special[ delegateType ] = {\n\t\tsetup: function() {\n\n\t\t\t// Handle: regular nodes (via `this.ownerDocument`), window\n\t\t\t// (via `this.document`) & document (via `this`).\n\t\t\tvar doc = this.ownerDocument || this.document || this,\n\t\t\t\tdataHolder = document.documentMode ? this : doc,\n\t\t\t\tattaches = dataPriv.get( dataHolder, delegateType );\n\n\t\t\t// Support: IE 9 - 11+\n\t\t\t// We use the same native handler for focusin & focus (and focusout & blur)\n\t\t\t// so we need to coordinate setup & teardown parts between those events.\n\t\t\t// Use `delegateType` as the key as `type` is already used by `leverageNative`.\n\t\t\tif ( !attaches ) {\n\t\t\t\tif ( document.documentMode ) {\n\t\t\t\t\tthis.addEventListener( delegateType, focusMappedHandler );\n\t\t\t\t} else {\n\t\t\t\t\tdoc.addEventListener( type, focusMappedHandler, true );\n\t\t\t\t}\n\t\t\t}\n\t\t\tdataPriv.set( dataHolder, delegateType, ( attaches || 0 ) + 1 );\n\t\t},\n\t\tteardown: function() {\n\t\t\tvar doc = this.ownerDocument || this.document || this,\n\t\t\t\tdataHolder = document.documentMode ? this : doc,\n\t\t\t\tattaches = dataPriv.get( dataHolder, delegateType ) - 1;\n\n\t\t\tif ( !attaches ) {\n\t\t\t\tif ( document.documentMode ) {\n\t\t\t\t\tthis.removeEventListener( delegateType, focusMappedHandler );\n\t\t\t\t} else {\n\t\t\t\t\tdoc.removeEventListener( type, focusMappedHandler, true );\n\t\t\t\t}\n\t\t\t\tdataPriv.remove( dataHolder, delegateType );\n\t\t\t} else {\n\t\t\t\tdataPriv.set( dataHolder, delegateType, attaches );\n\t\t\t}\n\t\t}\n\t};\n} );\n\n// Create mouseenter/leave events using mouseover/out and event-time checks\n// so that event delegation works in jQuery.\n// Do the same for pointerenter/pointerleave and pointerover/pointerout\n//\n// Support: Safari 7 only\n// Safari sends mouseenter too often; see:\n// https://bugs.chromium.org/p/chromium/issues/detail?id=470258\n// for the description of the bug (it existed in older Chrome versions as well).\njQuery.each( {\n\tmouseenter: \"mouseover\",\n\tmouseleave: \"mouseout\",\n\tpointerenter: \"pointerover\",\n\tpointerleave: \"pointerout\"\n}, function( orig, fix ) {\n\tjQuery.event.special[ orig ] = {\n\t\tdelegateType: fix,\n\t\tbindType: fix,\n\n\t\thandle: function( event ) {\n\t\t\tvar ret,\n\t\t\t\ttarget = this,\n\t\t\t\trelated = event.relatedTarget,\n\t\t\t\thandleObj = event.handleObj;\n\n\t\t\t// For mouseenter/leave call the handler if related is outside the target.\n\t\t\t// NB: No relatedTarget if the mouse left/entered the browser window\n\t\t\tif ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) {\n\t\t\t\tevent.type = handleObj.origType;\n\t\t\t\tret = handleObj.handler.apply( this, arguments );\n\t\t\t\tevent.type = fix;\n\t\t\t}\n\t\t\treturn ret;\n\t\t}\n\t};\n} );\n\njQuery.fn.extend( {\n\n\ton: function( types, selector, data, fn ) {\n\t\treturn on( this, types, selector, data, fn );\n\t},\n\tone: function( types, selector, data, fn ) {\n\t\treturn on( this, types, selector, data, fn, 1 );\n\t},\n\toff: function( types, selector, fn ) {\n\t\tvar handleObj, type;\n\t\tif ( types && types.preventDefault && types.handleObj ) {\n\n\t\t\t// ( event )  dispatched jQuery.Event\n\t\t\thandleObj = types.handleObj;\n\t\t\tjQuery( types.delegateTarget ).off(\n\t\t\t\thandleObj.namespace ?\n\t\t\t\t\thandleObj.origType + \".\" + handleObj.namespace :\n\t\t\t\t\thandleObj.origType,\n\t\t\t\thandleObj.selector,\n\t\t\t\thandleObj.handler\n\t\t\t);\n\t\t\treturn this;\n\t\t}\n\t\tif ( typeof types === \"object\" ) {\n\n\t\t\t// ( types-object [, selector] )\n\t\t\tfor ( type in types ) {\n\t\t\t\tthis.off( type, selector, types[ type ] );\n\t\t\t}\n\t\t\treturn this;\n\t\t}\n\t\tif ( selector === false || typeof selector === \"function\" ) {\n\n\t\t\t// ( types [, fn] )\n\t\t\tfn = selector;\n\t\t\tselector = undefined;\n\t\t}\n\t\tif ( fn === false ) {\n\t\t\tfn = returnFalse;\n\t\t}\n\t\treturn this.each( function() {\n\t\t\tjQuery.event.remove( this, types, fn, selector );\n\t\t} );\n\t}\n} );\n\n\nvar\n\n\t// Support: IE <=10 - 11, Edge 12 - 13 only\n\t// In IE/Edge using regex groups here causes severe slowdowns.\n\t// See https://connect.microsoft.com/IE/feedback/details/1736512/\n\trnoInnerhtml = /<script|<style|<link/i,\n\n\t// checked=\"checked\" or checked\n\trchecked = /checked\\s*(?:[^=]|=\\s*.checked.)/i,\n\n\trcleanScript = /^\\s*<!\\[CDATA\\[|\\]\\]>\\s*$/g;\n\n// Prefer a tbody over its parent table for containing new rows\nfunction manipulationTarget( elem, content ) {\n\tif ( nodeName( elem, \"table\" ) &&\n\t\tnodeName( content.nodeType !== 11 ? content : content.firstChild, \"tr\" ) ) {\n\n\t\treturn jQuery( elem ).children( \"tbody\" )[ 0 ] || elem;\n\t}\n\n\treturn elem;\n}\n\n// Replace/restore the type attribute of script elements for safe DOM manipulation\nfunction disableScript( elem ) {\n\telem.type = ( elem.getAttribute( \"type\" ) !== null ) + \"/\" + elem.type;\n\treturn elem;\n}\nfunction restoreScript( elem ) {\n\tif ( ( elem.type || \"\" ).slice( 0, 5 ) === \"true/\" ) {\n\t\telem.type = elem.type.slice( 5 );\n\t} else {\n\t\telem.removeAttribute( \"type\" );\n\t}\n\n\treturn elem;\n}\n\nfunction cloneCopyEvent( src, dest ) {\n\tvar i, l, type, pdataOld, udataOld, udataCur, events;\n\n\tif ( dest.nodeType !== 1 ) {\n\t\treturn;\n\t}\n\n\t// 1. Copy private data: events, handlers, etc.\n\tif ( dataPriv.hasData( src ) ) {\n\t\tpdataOld = dataPriv.get( src );\n\t\tevents = pdataOld.events;\n\n\t\tif ( events ) {\n\t\t\tdataPriv.remove( dest, \"handle events\" );\n\n\t\t\tfor ( type in events ) {\n\t\t\t\tfor ( i = 0, l = events[ type ].length; i < l; i++ ) {\n\t\t\t\t\tjQuery.event.add( dest, type, events[ type ][ i ] );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// 2. Copy user data\n\tif ( dataUser.hasData( src ) ) {\n\t\tudataOld = dataUser.access( src );\n\t\tudataCur = jQuery.extend( {}, udataOld );\n\n\t\tdataUser.set( dest, udataCur );\n\t}\n}\n\n// Fix IE bugs, see support tests\nfunction fixInput( src, dest ) {\n\tvar nodeName = dest.nodeName.toLowerCase();\n\n\t// Fails to persist the checked state of a cloned checkbox or radio button.\n\tif ( nodeName === \"input\" && rcheckableType.test( src.type ) ) {\n\t\tdest.checked = src.checked;\n\n\t// Fails to return the selected option to the default selected state when cloning options\n\t} else if ( nodeName === \"input\" || nodeName === \"textarea\" ) {\n\t\tdest.defaultValue = src.defaultValue;\n\t}\n}\n\nfunction domManip( collection, args, callback, ignored ) {\n\n\t// Flatten any nested arrays\n\targs = flat( args );\n\n\tvar fragment, first, scripts, hasScripts, node, doc,\n\t\ti = 0,\n\t\tl = collection.length,\n\t\tiNoClone = l - 1,\n\t\tvalue = args[ 0 ],\n\t\tvalueIsFunction = isFunction( value );\n\n\t// We can't cloneNode fragments that contain checked, in WebKit\n\tif ( valueIsFunction ||\n\t\t\t( l > 1 && typeof value === \"string\" &&\n\t\t\t\t!support.checkClone && rchecked.test( value ) ) ) {\n\t\treturn collection.each( function( index ) {\n\t\t\tvar self = collection.eq( index );\n\t\t\tif ( valueIsFunction ) {\n\t\t\t\targs[ 0 ] = value.call( this, index, self.html() );\n\t\t\t}\n\t\t\tdomManip( self, args, callback, ignored );\n\t\t} );\n\t}\n\n\tif ( l ) {\n\t\tfragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored );\n\t\tfirst = fragment.firstChild;\n\n\t\tif ( fragment.childNodes.length === 1 ) {\n\t\t\tfragment = first;\n\t\t}\n\n\t\t// Require either new content or an interest in ignored elements to invoke the callback\n\t\tif ( first || ignored ) {\n\t\t\tscripts = jQuery.map( getAll( fragment, \"script\" ), disableScript );\n\t\t\thasScripts = scripts.length;\n\n\t\t\t// Use the original fragment for the last item\n\t\t\t// instead of the first because it can end up\n\t\t\t// being emptied incorrectly in certain situations (trac-8070).\n\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\tnode = fragment;\n\n\t\t\t\tif ( i !== iNoClone ) {\n\t\t\t\t\tnode = jQuery.clone( node, true, true );\n\n\t\t\t\t\t// Keep references to cloned scripts for later restoration\n\t\t\t\t\tif ( hasScripts ) {\n\n\t\t\t\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t\t\t\t// push.apply(_, arraylike) throws on ancient WebKit\n\t\t\t\t\t\tjQuery.merge( scripts, getAll( node, \"script\" ) );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\tcallback.call( collection[ i ], node, i );\n\t\t\t}\n\n\t\t\tif ( hasScripts ) {\n\t\t\t\tdoc = scripts[ scripts.length - 1 ].ownerDocument;\n\n\t\t\t\t// Re-enable scripts\n\t\t\t\tjQuery.map( scripts, restoreScript );\n\n\t\t\t\t// Evaluate executable scripts on first document insertion\n\t\t\t\tfor ( i = 0; i < hasScripts; i++ ) {\n\t\t\t\t\tnode = scripts[ i ];\n\t\t\t\t\tif ( rscriptType.test( node.type || \"\" ) &&\n\t\t\t\t\t\t!dataPriv.access( node, \"globalEval\" ) &&\n\t\t\t\t\t\tjQuery.contains( doc, node ) ) {\n\n\t\t\t\t\t\tif ( node.src && ( node.type || \"\" ).toLowerCase()  !== \"module\" ) {\n\n\t\t\t\t\t\t\t// Optional AJAX dependency, but won't run scripts if not present\n\t\t\t\t\t\t\tif ( jQuery._evalUrl && !node.noModule ) {\n\t\t\t\t\t\t\t\tjQuery._evalUrl( node.src, {\n\t\t\t\t\t\t\t\t\tnonce: node.nonce || node.getAttribute( \"nonce\" )\n\t\t\t\t\t\t\t\t}, doc );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Unwrap a CDATA section containing script contents. This shouldn't be\n\t\t\t\t\t\t\t// needed as in XML documents they're already not visible when\n\t\t\t\t\t\t\t// inspecting element contents and in HTML documents they have no\n\t\t\t\t\t\t\t// meaning but we're preserving that logic for backwards compatibility.\n\t\t\t\t\t\t\t// This will be removed completely in 4.0. See gh-4904.\n\t\t\t\t\t\t\tDOMEval( node.textContent.replace( rcleanScript, \"\" ), node, doc );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn collection;\n}\n\nfunction remove( elem, selector, keepData ) {\n\tvar node,\n\t\tnodes = selector ? jQuery.filter( selector, elem ) : elem,\n\t\ti = 0;\n\n\tfor ( ; ( node = nodes[ i ] ) != null; i++ ) {\n\t\tif ( !keepData && node.nodeType === 1 ) {\n\t\t\tjQuery.cleanData( getAll( node ) );\n\t\t}\n\n\t\tif ( node.parentNode ) {\n\t\t\tif ( keepData && isAttached( node ) ) {\n\t\t\t\tsetGlobalEval( getAll( node, \"script\" ) );\n\t\t\t}\n\t\t\tnode.parentNode.removeChild( node );\n\t\t}\n\t}\n\n\treturn elem;\n}\n\njQuery.extend( {\n\thtmlPrefilter: function( html ) {\n\t\treturn html;\n\t},\n\n\tclone: function( elem, dataAndEvents, deepDataAndEvents ) {\n\t\tvar i, l, srcElements, destElements,\n\t\t\tclone = elem.cloneNode( true ),\n\t\t\tinPage = isAttached( elem );\n\n\t\t// Fix IE cloning issues\n\t\tif ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) &&\n\t\t\t\t!jQuery.isXMLDoc( elem ) ) {\n\n\t\t\t// We eschew jQuery#find here for performance reasons:\n\t\t\t// https://jsperf.com/getall-vs-sizzle/2\n\t\t\tdestElements = getAll( clone );\n\t\t\tsrcElements = getAll( elem );\n\n\t\t\tfor ( i = 0, l = srcElements.length; i < l; i++ ) {\n\t\t\t\tfixInput( srcElements[ i ], destElements[ i ] );\n\t\t\t}\n\t\t}\n\n\t\t// Copy the events from the original to the clone\n\t\tif ( dataAndEvents ) {\n\t\t\tif ( deepDataAndEvents ) {\n\t\t\t\tsrcElements = srcElements || getAll( elem );\n\t\t\t\tdestElements = destElements || getAll( clone );\n\n\t\t\t\tfor ( i = 0, l = srcElements.length; i < l; i++ ) {\n\t\t\t\t\tcloneCopyEvent( srcElements[ i ], destElements[ i ] );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tcloneCopyEvent( elem, clone );\n\t\t\t}\n\t\t}\n\n\t\t// Preserve script evaluation history\n\t\tdestElements = getAll( clone, \"script\" );\n\t\tif ( destElements.length > 0 ) {\n\t\t\tsetGlobalEval( destElements, !inPage && getAll( elem, \"script\" ) );\n\t\t}\n\n\t\t// Return the cloned set\n\t\treturn clone;\n\t},\n\n\tcleanData: function( elems ) {\n\t\tvar data, elem, type,\n\t\t\tspecial = jQuery.event.special,\n\t\t\ti = 0;\n\n\t\tfor ( ; ( elem = elems[ i ] ) !== undefined; i++ ) {\n\t\t\tif ( acceptData( elem ) ) {\n\t\t\t\tif ( ( data = elem[ dataPriv.expando ] ) ) {\n\t\t\t\t\tif ( data.events ) {\n\t\t\t\t\t\tfor ( type in data.events ) {\n\t\t\t\t\t\t\tif ( special[ type ] ) {\n\t\t\t\t\t\t\t\tjQuery.event.remove( elem, type );\n\n\t\t\t\t\t\t\t// This is a shortcut to avoid jQuery.event.remove's overhead\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\tjQuery.removeEvent( elem, type, data.handle );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Support: Chrome <=35 - 45+\n\t\t\t\t\t// Assign undefined instead of using delete, see Data#remove\n\t\t\t\t\telem[ dataPriv.expando ] = undefined;\n\t\t\t\t}\n\t\t\t\tif ( elem[ dataUser.expando ] ) {\n\n\t\t\t\t\t// Support: Chrome <=35 - 45+\n\t\t\t\t\t// Assign undefined instead of using delete, see Data#remove\n\t\t\t\t\telem[ dataUser.expando ] = undefined;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n} );\n\njQuery.fn.extend( {\n\tdetach: function( selector ) {\n\t\treturn remove( this, selector, true );\n\t},\n\n\tremove: function( selector ) {\n\t\treturn remove( this, selector );\n\t},\n\n\ttext: function( value ) {\n\t\treturn access( this, function( value ) {\n\t\t\treturn value === undefined ?\n\t\t\t\tjQuery.text( this ) :\n\t\t\t\tthis.empty().each( function() {\n\t\t\t\t\tif ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {\n\t\t\t\t\t\tthis.textContent = value;\n\t\t\t\t\t}\n\t\t\t\t} );\n\t\t}, null, value, arguments.length );\n\t},\n\n\tappend: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {\n\t\t\t\tvar target = manipulationTarget( this, elem );\n\t\t\t\ttarget.appendChild( elem );\n\t\t\t}\n\t\t} );\n\t},\n\n\tprepend: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {\n\t\t\t\tvar target = manipulationTarget( this, elem );\n\t\t\t\ttarget.insertBefore( elem, target.firstChild );\n\t\t\t}\n\t\t} );\n\t},\n\n\tbefore: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.parentNode ) {\n\t\t\t\tthis.parentNode.insertBefore( elem, this );\n\t\t\t}\n\t\t} );\n\t},\n\n\tafter: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.parentNode ) {\n\t\t\t\tthis.parentNode.insertBefore( elem, this.nextSibling );\n\t\t\t}\n\t\t} );\n\t},\n\n\tempty: function() {\n\t\tvar elem,\n\t\t\ti = 0;\n\n\t\tfor ( ; ( elem = this[ i ] ) != null; i++ ) {\n\t\t\tif ( elem.nodeType === 1 ) {\n\n\t\t\t\t// Prevent memory leaks\n\t\t\t\tjQuery.cleanData( getAll( elem, false ) );\n\n\t\t\t\t// Remove any remaining nodes\n\t\t\t\telem.textContent = \"\";\n\t\t\t}\n\t\t}\n\n\t\treturn this;\n\t},\n\n\tclone: function( dataAndEvents, deepDataAndEvents ) {\n\t\tdataAndEvents = dataAndEvents == null ? false : dataAndEvents;\n\t\tdeepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;\n\n\t\treturn this.map( function() {\n\t\t\treturn jQuery.clone( this, dataAndEvents, deepDataAndEvents );\n\t\t} );\n\t},\n\n\thtml: function( value ) {\n\t\treturn access( this, function( value ) {\n\t\t\tvar elem = this[ 0 ] || {},\n\t\t\t\ti = 0,\n\t\t\t\tl = this.length;\n\n\t\t\tif ( value === undefined && elem.nodeType === 1 ) {\n\t\t\t\treturn elem.innerHTML;\n\t\t\t}\n\n\t\t\t// See if we can take a shortcut and just use innerHTML\n\t\t\tif ( typeof value === \"string\" && !rnoInnerhtml.test( value ) &&\n\t\t\t\t!wrapMap[ ( rtagName.exec( value ) || [ \"\", \"\" ] )[ 1 ].toLowerCase() ] ) {\n\n\t\t\t\tvalue = jQuery.htmlPrefilter( value );\n\n\t\t\t\ttry {\n\t\t\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\t\t\telem = this[ i ] || {};\n\n\t\t\t\t\t\t// Remove element nodes and prevent memory leaks\n\t\t\t\t\t\tif ( elem.nodeType === 1 ) {\n\t\t\t\t\t\t\tjQuery.cleanData( getAll( elem, false ) );\n\t\t\t\t\t\t\telem.innerHTML = value;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\telem = 0;\n\n\t\t\t\t// If using innerHTML throws an exception, use the fallback method\n\t\t\t\t} catch ( e ) {}\n\t\t\t}\n\n\t\t\tif ( elem ) {\n\t\t\t\tthis.empty().append( value );\n\t\t\t}\n\t\t}, null, value, arguments.length );\n\t},\n\n\treplaceWith: function() {\n\t\tvar ignored = [];\n\n\t\t// Make the changes, replacing each non-ignored context element with the new content\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tvar parent = this.parentNode;\n\n\t\t\tif ( jQuery.inArray( this, ignored ) < 0 ) {\n\t\t\t\tjQuery.cleanData( getAll( this ) );\n\t\t\t\tif ( parent ) {\n\t\t\t\t\tparent.replaceChild( elem, this );\n\t\t\t\t}\n\t\t\t}\n\n\t\t// Force callback invocation\n\t\t}, ignored );\n\t}\n} );\n\njQuery.each( {\n\tappendTo: \"append\",\n\tprependTo: \"prepend\",\n\tinsertBefore: \"before\",\n\tinsertAfter: \"after\",\n\treplaceAll: \"replaceWith\"\n}, function( name, original ) {\n\tjQuery.fn[ name ] = function( selector ) {\n\t\tvar elems,\n\t\t\tret = [],\n\t\t\tinsert = jQuery( selector ),\n\t\t\tlast = insert.length - 1,\n\t\t\ti = 0;\n\n\t\tfor ( ; i <= last; i++ ) {\n\t\t\telems = i === last ? this : this.clone( true );\n\t\t\tjQuery( insert[ i ] )[ original ]( elems );\n\n\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t// .get() because push.apply(_, arraylike) throws on ancient WebKit\n\t\t\tpush.apply( ret, elems.get() );\n\t\t}\n\n\t\treturn this.pushStack( ret );\n\t};\n} );\nvar rnumnonpx = new RegExp( \"^(\" + pnum + \")(?!px)[a-z%]+$\", \"i\" );\n\nvar rcustomProp = /^--/;\n\n\nvar getStyles = function( elem ) {\n\n\t\t// Support: IE <=11 only, Firefox <=30 (trac-15098, trac-14150)\n\t\t// IE throws on elements created in popups\n\t\t// FF meanwhile throws on frame elements through \"defaultView.getComputedStyle\"\n\t\tvar view = elem.ownerDocument.defaultView;\n\n\t\tif ( !view || !view.opener ) {\n\t\t\tview = window;\n\t\t}\n\n\t\treturn view.getComputedStyle( elem );\n\t};\n\nvar swap = function( elem, options, callback ) {\n\tvar ret, name,\n\t\told = {};\n\n\t// Remember the old values, and insert the new ones\n\tfor ( name in options ) {\n\t\told[ name ] = elem.style[ name ];\n\t\telem.style[ name ] = options[ name ];\n\t}\n\n\tret = callback.call( elem );\n\n\t// Revert the old values\n\tfor ( name in options ) {\n\t\telem.style[ name ] = old[ name ];\n\t}\n\n\treturn ret;\n};\n\n\nvar rboxStyle = new RegExp( cssExpand.join( \"|\" ), \"i\" );\n\n\n\n( function() {\n\n\t// Executing both pixelPosition & boxSizingReliable tests require only one layout\n\t// so they're executed at the same time to save the second computation.\n\tfunction computeStyleTests() {\n\n\t\t// This is a singleton, we need to execute it only once\n\t\tif ( !div ) {\n\t\t\treturn;\n\t\t}\n\n\t\tcontainer.style.cssText = \"position:absolute;left:-11111px;width:60px;\" +\n\t\t\t\"margin-top:1px;padding:0;border:0\";\n\t\tdiv.style.cssText =\n\t\t\t\"position:relative;display:block;box-sizing:border-box;overflow:scroll;\" +\n\t\t\t\"margin:auto;border:1px;padding:1px;\" +\n\t\t\t\"width:60%;top:1%\";\n\t\tdocumentElement.appendChild( container ).appendChild( div );\n\n\t\tvar divStyle = window.getComputedStyle( div );\n\t\tpixelPositionVal = divStyle.top !== \"1%\";\n\n\t\t// Support: Android 4.0 - 4.3 only, Firefox <=3 - 44\n\t\treliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12;\n\n\t\t// Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3\n\t\t// Some styles come back with percentage values, even though they shouldn't\n\t\tdiv.style.right = \"60%\";\n\t\tpixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36;\n\n\t\t// Support: IE 9 - 11 only\n\t\t// Detect misreporting of content dimensions for box-sizing:border-box elements\n\t\tboxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36;\n\n\t\t// Support: IE 9 only\n\t\t// Detect overflow:scroll screwiness (gh-3699)\n\t\t// Support: Chrome <=64\n\t\t// Don't get tricked when zoom affects offsetWidth (gh-4029)\n\t\tdiv.style.position = \"absolute\";\n\t\tscrollboxSizeVal = roundPixelMeasures( div.offsetWidth / 3 ) === 12;\n\n\t\tdocumentElement.removeChild( container );\n\n\t\t// Nullify the div so it wouldn't be stored in the memory and\n\t\t// it will also be a sign that checks already performed\n\t\tdiv = null;\n\t}\n\n\tfunction roundPixelMeasures( measure ) {\n\t\treturn Math.round( parseFloat( measure ) );\n\t}\n\n\tvar pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal,\n\t\treliableTrDimensionsVal, reliableMarginLeftVal,\n\t\tcontainer = document.createElement( \"div\" ),\n\t\tdiv = document.createElement( \"div\" );\n\n\t// Finish early in limited (non-browser) environments\n\tif ( !div.style ) {\n\t\treturn;\n\t}\n\n\t// Support: IE <=9 - 11 only\n\t// Style of cloned element affects source element cloned (trac-8908)\n\tdiv.style.backgroundClip = \"content-box\";\n\tdiv.cloneNode( true ).style.backgroundClip = \"\";\n\tsupport.clearCloneStyle = div.style.backgroundClip === \"content-box\";\n\n\tjQuery.extend( support, {\n\t\tboxSizingReliable: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn boxSizingReliableVal;\n\t\t},\n\t\tpixelBoxStyles: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn pixelBoxStylesVal;\n\t\t},\n\t\tpixelPosition: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn pixelPositionVal;\n\t\t},\n\t\treliableMarginLeft: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn reliableMarginLeftVal;\n\t\t},\n\t\tscrollboxSize: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn scrollboxSizeVal;\n\t\t},\n\n\t\t// Support: IE 9 - 11+, Edge 15 - 18+\n\t\t// IE/Edge misreport `getComputedStyle` of table rows with width/height\n\t\t// set in CSS while `offset*` properties report correct values.\n\t\t// Behavior in IE 9 is more subtle than in newer versions & it passes\n\t\t// some versions of this test; make sure not to make it pass there!\n\t\t//\n\t\t// Support: Firefox 70+\n\t\t// Only Firefox includes border widths\n\t\t// in computed dimensions. (gh-4529)\n\t\treliableTrDimensions: function() {\n\t\t\tvar table, tr, trChild, trStyle;\n\t\t\tif ( reliableTrDimensionsVal == null ) {\n\t\t\t\ttable = document.createElement( \"table\" );\n\t\t\t\ttr = document.createElement( \"tr\" );\n\t\t\t\ttrChild = document.createElement( \"div\" );\n\n\t\t\t\ttable.style.cssText = \"position:absolute;left:-11111px;border-collapse:separate\";\n\t\t\t\ttr.style.cssText = \"box-sizing:content-box;border:1px solid\";\n\n\t\t\t\t// Support: Chrome 86+\n\t\t\t\t// Height set through cssText does not get applied.\n\t\t\t\t// Computed height then comes back as 0.\n\t\t\t\ttr.style.height = \"1px\";\n\t\t\t\ttrChild.style.height = \"9px\";\n\n\t\t\t\t// Support: Android 8 Chrome 86+\n\t\t\t\t// In our bodyBackground.html iframe,\n\t\t\t\t// display for all div elements is set to \"inline\",\n\t\t\t\t// which causes a problem only in Android 8 Chrome 86.\n\t\t\t\t// Ensuring the div is `display: block`\n\t\t\t\t// gets around this issue.\n\t\t\t\ttrChild.style.display = \"block\";\n\n\t\t\t\tdocumentElement\n\t\t\t\t\t.appendChild( table )\n\t\t\t\t\t.appendChild( tr )\n\t\t\t\t\t.appendChild( trChild );\n\n\t\t\t\ttrStyle = window.getComputedStyle( tr );\n\t\t\t\treliableTrDimensionsVal = ( parseInt( trStyle.height, 10 ) +\n\t\t\t\t\tparseInt( trStyle.borderTopWidth, 10 ) +\n\t\t\t\t\tparseInt( trStyle.borderBottomWidth, 10 ) ) === tr.offsetHeight;\n\n\t\t\t\tdocumentElement.removeChild( table );\n\t\t\t}\n\t\t\treturn reliableTrDimensionsVal;\n\t\t}\n\t} );\n} )();\n\n\nfunction curCSS( elem, name, computed ) {\n\tvar width, minWidth, maxWidth, ret,\n\t\tisCustomProp = rcustomProp.test( name ),\n\n\t\t// Support: Firefox 51+\n\t\t// Retrieving style before computed somehow\n\t\t// fixes an issue with getting wrong values\n\t\t// on detached elements\n\t\tstyle = elem.style;\n\n\tcomputed = computed || getStyles( elem );\n\n\t// getPropertyValue is needed for:\n\t//   .css('filter') (IE 9 only, trac-12537)\n\t//   .css('--customProperty) (gh-3144)\n\tif ( computed ) {\n\n\t\t// Support: IE <=9 - 11+\n\t\t// IE only supports `\"float\"` in `getPropertyValue`; in computed styles\n\t\t// it's only available as `\"cssFloat\"`. We no longer modify properties\n\t\t// sent to `.css()` apart from camelCasing, so we need to check both.\n\t\t// Normally, this would create difference in behavior: if\n\t\t// `getPropertyValue` returns an empty string, the value returned\n\t\t// by `.css()` would be `undefined`. This is usually the case for\n\t\t// disconnected elements. However, in IE even disconnected elements\n\t\t// with no styles return `\"none\"` for `getPropertyValue( \"float\" )`\n\t\tret = computed.getPropertyValue( name ) || computed[ name ];\n\n\t\tif ( isCustomProp && ret ) {\n\n\t\t\t// Support: Firefox 105+, Chrome <=105+\n\t\t\t// Spec requires trimming whitespace for custom properties (gh-4926).\n\t\t\t// Firefox only trims leading whitespace. Chrome just collapses\n\t\t\t// both leading & trailing whitespace to a single space.\n\t\t\t//\n\t\t\t// Fall back to `undefined` if empty string returned.\n\t\t\t// This collapses a missing definition with property defined\n\t\t\t// and set to an empty string but there's no standard API\n\t\t\t// allowing us to differentiate them without a performance penalty\n\t\t\t// and returning `undefined` aligns with older jQuery.\n\t\t\t//\n\t\t\t// rtrimCSS treats U+000D CARRIAGE RETURN and U+000C FORM FEED\n\t\t\t// as whitespace while CSS does not, but this is not a problem\n\t\t\t// because CSS preprocessing replaces them with U+000A LINE FEED\n\t\t\t// (which *is* CSS whitespace)\n\t\t\t// https://www.w3.org/TR/css-syntax-3/#input-preprocessing\n\t\t\tret = ret.replace( rtrimCSS, \"$1\" ) || undefined;\n\t\t}\n\n\t\tif ( ret === \"\" && !isAttached( elem ) ) {\n\t\t\tret = jQuery.style( elem, name );\n\t\t}\n\n\t\t// A tribute to the \"awesome hack by Dean Edwards\"\n\t\t// Android Browser returns percentage for some values,\n\t\t// but width seems to be reliably pixels.\n\t\t// This is against the CSSOM draft spec:\n\t\t// https://drafts.csswg.org/cssom/#resolved-values\n\t\tif ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) {\n\n\t\t\t// Remember the original values\n\t\t\twidth = style.width;\n\t\t\tminWidth = style.minWidth;\n\t\t\tmaxWidth = style.maxWidth;\n\n\t\t\t// Put in the new values to get a computed value out\n\t\t\tstyle.minWidth = style.maxWidth = style.width = ret;\n\t\t\tret = computed.width;\n\n\t\t\t// Revert the changed values\n\t\t\tstyle.width = width;\n\t\t\tstyle.minWidth = minWidth;\n\t\t\tstyle.maxWidth = maxWidth;\n\t\t}\n\t}\n\n\treturn ret !== undefined ?\n\n\t\t// Support: IE <=9 - 11 only\n\t\t// IE returns zIndex value as an integer.\n\t\tret + \"\" :\n\t\tret;\n}\n\n\nfunction addGetHookIf( conditionFn, hookFn ) {\n\n\t// Define the hook, we'll check on the first run if it's really needed.\n\treturn {\n\t\tget: function() {\n\t\t\tif ( conditionFn() ) {\n\n\t\t\t\t// Hook not needed (or it's not possible to use it due\n\t\t\t\t// to missing dependency), remove it.\n\t\t\t\tdelete this.get;\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Hook needed; redefine it so that the support test is not executed again.\n\t\t\treturn ( this.get = hookFn ).apply( this, arguments );\n\t\t}\n\t};\n}\n\n\nvar cssPrefixes = [ \"Webkit\", \"Moz\", \"ms\" ],\n\temptyStyle = document.createElement( \"div\" ).style,\n\tvendorProps = {};\n\n// Return a vendor-prefixed property or undefined\nfunction vendorPropName( name ) {\n\n\t// Check for vendor prefixed names\n\tvar capName = name[ 0 ].toUpperCase() + name.slice( 1 ),\n\t\ti = cssPrefixes.length;\n\n\twhile ( i-- ) {\n\t\tname = cssPrefixes[ i ] + capName;\n\t\tif ( name in emptyStyle ) {\n\t\t\treturn name;\n\t\t}\n\t}\n}\n\n// Return a potentially-mapped jQuery.cssProps or vendor prefixed property\nfunction finalPropName( name ) {\n\tvar final = jQuery.cssProps[ name ] || vendorProps[ name ];\n\n\tif ( final ) {\n\t\treturn final;\n\t}\n\tif ( name in emptyStyle ) {\n\t\treturn name;\n\t}\n\treturn vendorProps[ name ] = vendorPropName( name ) || name;\n}\n\n\nvar\n\n\t// Swappable if display is none or starts with table\n\t// except \"table\", \"table-cell\", or \"table-caption\"\n\t// See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display\n\trdisplayswap = /^(none|table(?!-c[ea]).+)/,\n\tcssShow = { position: \"absolute\", visibility: \"hidden\", display: \"block\" },\n\tcssNormalTransform = {\n\t\tletterSpacing: \"0\",\n\t\tfontWeight: \"400\"\n\t};\n\nfunction setPositiveNumber( _elem, value, subtract ) {\n\n\t// Any relative (+/-) values have already been\n\t// normalized at this point\n\tvar matches = rcssNum.exec( value );\n\treturn matches ?\n\n\t\t// Guard against undefined \"subtract\", e.g., when used as in cssHooks\n\t\tMath.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || \"px\" ) :\n\t\tvalue;\n}\n\nfunction boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) {\n\tvar i = dimension === \"width\" ? 1 : 0,\n\t\textra = 0,\n\t\tdelta = 0,\n\t\tmarginDelta = 0;\n\n\t// Adjustment may not be necessary\n\tif ( box === ( isBorderBox ? \"border\" : \"content\" ) ) {\n\t\treturn 0;\n\t}\n\n\tfor ( ; i < 4; i += 2 ) {\n\n\t\t// Both box models exclude margin\n\t\t// Count margin delta separately to only add it after scroll gutter adjustment.\n\t\t// This is needed to make negative margins work with `outerHeight( true )` (gh-3982).\n\t\tif ( box === \"margin\" ) {\n\t\t\tmarginDelta += jQuery.css( elem, box + cssExpand[ i ], true, styles );\n\t\t}\n\n\t\t// If we get here with a content-box, we're seeking \"padding\" or \"border\" or \"margin\"\n\t\tif ( !isBorderBox ) {\n\n\t\t\t// Add padding\n\t\t\tdelta += jQuery.css( elem, \"padding\" + cssExpand[ i ], true, styles );\n\n\t\t\t// For \"border\" or \"margin\", add border\n\t\t\tif ( box !== \"padding\" ) {\n\t\t\t\tdelta += jQuery.css( elem, \"border\" + cssExpand[ i ] + \"Width\", true, styles );\n\n\t\t\t// But still keep track of it otherwise\n\t\t\t} else {\n\t\t\t\textra += jQuery.css( elem, \"border\" + cssExpand[ i ] + \"Width\", true, styles );\n\t\t\t}\n\n\t\t// If we get here with a border-box (content + padding + border), we're seeking \"content\" or\n\t\t// \"padding\" or \"margin\"\n\t\t} else {\n\n\t\t\t// For \"content\", subtract padding\n\t\t\tif ( box === \"content\" ) {\n\t\t\t\tdelta -= jQuery.css( elem, \"padding\" + cssExpand[ i ], true, styles );\n\t\t\t}\n\n\t\t\t// For \"content\" or \"padding\", subtract border\n\t\t\tif ( box !== \"margin\" ) {\n\t\t\t\tdelta -= jQuery.css( elem, \"border\" + cssExpand[ i ] + \"Width\", true, styles );\n\t\t\t}\n\t\t}\n\t}\n\n\t// Account for positive content-box scroll gutter when requested by providing computedVal\n\tif ( !isBorderBox && computedVal >= 0 ) {\n\n\t\t// offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border\n\t\t// Assuming integer scroll gutter, subtract the rest and round down\n\t\tdelta += Math.max( 0, Math.ceil(\n\t\t\telem[ \"offset\" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -\n\t\t\tcomputedVal -\n\t\t\tdelta -\n\t\t\textra -\n\t\t\t0.5\n\n\t\t// If offsetWidth/offsetHeight is unknown, then we can't determine content-box scroll gutter\n\t\t// Use an explicit zero to avoid NaN (gh-3964)\n\t\t) ) || 0;\n\t}\n\n\treturn delta + marginDelta;\n}\n\nfunction getWidthOrHeight( elem, dimension, extra ) {\n\n\t// Start with computed style\n\tvar styles = getStyles( elem ),\n\n\t\t// To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322).\n\t\t// Fake content-box until we know it's needed to know the true value.\n\t\tboxSizingNeeded = !support.boxSizingReliable() || extra,\n\t\tisBorderBox = boxSizingNeeded &&\n\t\t\tjQuery.css( elem, \"boxSizing\", false, styles ) === \"border-box\",\n\t\tvalueIsBorderBox = isBorderBox,\n\n\t\tval = curCSS( elem, dimension, styles ),\n\t\toffsetProp = \"offset\" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 );\n\n\t// Support: Firefox <=54\n\t// Return a confounding non-pixel value or feign ignorance, as appropriate.\n\tif ( rnumnonpx.test( val ) ) {\n\t\tif ( !extra ) {\n\t\t\treturn val;\n\t\t}\n\t\tval = \"auto\";\n\t}\n\n\n\t// Support: IE 9 - 11 only\n\t// Use offsetWidth/offsetHeight for when box sizing is unreliable.\n\t// In those cases, the computed value can be trusted to be border-box.\n\tif ( ( !support.boxSizingReliable() && isBorderBox ||\n\n\t\t// Support: IE 10 - 11+, Edge 15 - 18+\n\t\t// IE/Edge misreport `getComputedStyle` of table rows with width/height\n\t\t// set in CSS while `offset*` properties report correct values.\n\t\t// Interestingly, in some cases IE 9 doesn't suffer from this issue.\n\t\t!support.reliableTrDimensions() && nodeName( elem, \"tr\" ) ||\n\n\t\t// Fall back to offsetWidth/offsetHeight when value is \"auto\"\n\t\t// This happens for inline elements with no explicit setting (gh-3571)\n\t\tval === \"auto\" ||\n\n\t\t// Support: Android <=4.1 - 4.3 only\n\t\t// Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602)\n\t\t!parseFloat( val ) && jQuery.css( elem, \"display\", false, styles ) === \"inline\" ) &&\n\n\t\t// Make sure the element is visible & connected\n\t\telem.getClientRects().length ) {\n\n\t\tisBorderBox = jQuery.css( elem, \"boxSizing\", false, styles ) === \"border-box\";\n\n\t\t// Where available, offsetWidth/offsetHeight approximate border box dimensions.\n\t\t// Where not available (e.g., SVG), assume unreliable box-sizing and interpret the\n\t\t// retrieved value as a content box dimension.\n\t\tvalueIsBorderBox = offsetProp in elem;\n\t\tif ( valueIsBorderBox ) {\n\t\t\tval = elem[ offsetProp ];\n\t\t}\n\t}\n\n\t// Normalize \"\" and auto\n\tval = parseFloat( val ) || 0;\n\n\t// Adjust for the element's box model\n\treturn ( val +\n\t\tboxModelAdjustment(\n\t\t\telem,\n\t\t\tdimension,\n\t\t\textra || ( isBorderBox ? \"border\" : \"content\" ),\n\t\t\tvalueIsBorderBox,\n\t\t\tstyles,\n\n\t\t\t// Provide the current computed size to request scroll gutter calculation (gh-3589)\n\t\t\tval\n\t\t)\n\t) + \"px\";\n}\n\njQuery.extend( {\n\n\t// Add in style property hooks for overriding the default\n\t// behavior of getting and setting a style property\n\tcssHooks: {\n\t\topacity: {\n\t\t\tget: function( elem, computed ) {\n\t\t\t\tif ( computed ) {\n\n\t\t\t\t\t// We should always get a number back from opacity\n\t\t\t\t\tvar ret = curCSS( elem, \"opacity\" );\n\t\t\t\t\treturn ret === \"\" ? \"1\" : ret;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t},\n\n\t// Don't automatically add \"px\" to these possibly-unitless properties\n\tcssNumber: {\n\t\tanimationIterationCount: true,\n\t\taspectRatio: true,\n\t\tborderImageSlice: true,\n\t\tcolumnCount: true,\n\t\tflexGrow: true,\n\t\tflexShrink: true,\n\t\tfontWeight: true,\n\t\tgridArea: true,\n\t\tgridColumn: true,\n\t\tgridColumnEnd: true,\n\t\tgridColumnStart: true,\n\t\tgridRow: true,\n\t\tgridRowEnd: true,\n\t\tgridRowStart: true,\n\t\tlineHeight: true,\n\t\topacity: true,\n\t\torder: true,\n\t\torphans: true,\n\t\tscale: true,\n\t\twidows: true,\n\t\tzIndex: true,\n\t\tzoom: true,\n\n\t\t// SVG-related\n\t\tfillOpacity: true,\n\t\tfloodOpacity: true,\n\t\tstopOpacity: true,\n\t\tstrokeMiterlimit: true,\n\t\tstrokeOpacity: true\n\t},\n\n\t// Add in properties whose names you wish to fix before\n\t// setting or getting the value\n\tcssProps: {},\n\n\t// Get and set the style property on a DOM Node\n\tstyle: function( elem, name, value, extra ) {\n\n\t\t// Don't set styles on text and comment nodes\n\t\tif ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Make sure that we're working with the right name\n\t\tvar ret, type, hooks,\n\t\t\torigName = camelCase( name ),\n\t\t\tisCustomProp = rcustomProp.test( name ),\n\t\t\tstyle = elem.style;\n\n\t\t// Make sure that we're working with the right name. We don't\n\t\t// want to query the value if it is a CSS custom property\n\t\t// since they are user-defined.\n\t\tif ( !isCustomProp ) {\n\t\t\tname = finalPropName( origName );\n\t\t}\n\n\t\t// Gets hook for the prefixed version, then unprefixed version\n\t\thooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];\n\n\t\t// Check if we're setting a value\n\t\tif ( value !== undefined ) {\n\t\t\ttype = typeof value;\n\n\t\t\t// Convert \"+=\" or \"-=\" to relative numbers (trac-7345)\n\t\t\tif ( type === \"string\" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) {\n\t\t\t\tvalue = adjustCSS( elem, name, ret );\n\n\t\t\t\t// Fixes bug trac-9237\n\t\t\t\ttype = \"number\";\n\t\t\t}\n\n\t\t\t// Make sure that null and NaN values aren't set (trac-7116)\n\t\t\tif ( value == null || value !== value ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// If a number was passed in, add the unit (except for certain CSS properties)\n\t\t\t// The isCustomProp check can be removed in jQuery 4.0 when we only auto-append\n\t\t\t// \"px\" to a few hardcoded values.\n\t\t\tif ( type === \"number\" && !isCustomProp ) {\n\t\t\t\tvalue += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? \"\" : \"px\" );\n\t\t\t}\n\n\t\t\t// background-* props affect original clone's values\n\t\t\tif ( !support.clearCloneStyle && value === \"\" && name.indexOf( \"background\" ) === 0 ) {\n\t\t\t\tstyle[ name ] = \"inherit\";\n\t\t\t}\n\n\t\t\t// If a hook was provided, use that value, otherwise just set the specified value\n\t\t\tif ( !hooks || !( \"set\" in hooks ) ||\n\t\t\t\t( value = hooks.set( elem, value, extra ) ) !== undefined ) {\n\n\t\t\t\tif ( isCustomProp ) {\n\t\t\t\t\tstyle.setProperty( name, value );\n\t\t\t\t} else {\n\t\t\t\t\tstyle[ name ] = value;\n\t\t\t\t}\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t// If a hook was provided get the non-computed value from there\n\t\t\tif ( hooks && \"get\" in hooks &&\n\t\t\t\t( ret = hooks.get( elem, false, extra ) ) !== undefined ) {\n\n\t\t\t\treturn ret;\n\t\t\t}\n\n\t\t\t// Otherwise just get the value from the style object\n\t\t\treturn style[ name ];\n\t\t}\n\t},\n\n\tcss: function( elem, name, extra, styles ) {\n\t\tvar val, num, hooks,\n\t\t\torigName = camelCase( name ),\n\t\t\tisCustomProp = rcustomProp.test( name );\n\n\t\t// Make sure that we're working with the right name. We don't\n\t\t// want to modify the value if it is a CSS custom property\n\t\t// since they are user-defined.\n\t\tif ( !isCustomProp ) {\n\t\t\tname = finalPropName( origName );\n\t\t}\n\n\t\t// Try prefixed name followed by the unprefixed name\n\t\thooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];\n\n\t\t// If a hook was provided get the computed value from there\n\t\tif ( hooks && \"get\" in hooks ) {\n\t\t\tval = hooks.get( elem, true, extra );\n\t\t}\n\n\t\t// Otherwise, if a way to get the computed value exists, use that\n\t\tif ( val === undefined ) {\n\t\t\tval = curCSS( elem, name, styles );\n\t\t}\n\n\t\t// Convert \"normal\" to computed value\n\t\tif ( val === \"normal\" && name in cssNormalTransform ) {\n\t\t\tval = cssNormalTransform[ name ];\n\t\t}\n\n\t\t// Make numeric if forced or a qualifier was provided and val looks numeric\n\t\tif ( extra === \"\" || extra ) {\n\t\t\tnum = parseFloat( val );\n\t\t\treturn extra === true || isFinite( num ) ? num || 0 : val;\n\t\t}\n\n\t\treturn val;\n\t}\n} );\n\njQuery.each( [ \"height\", \"width\" ], function( _i, dimension ) {\n\tjQuery.cssHooks[ dimension ] = {\n\t\tget: function( elem, computed, extra ) {\n\t\t\tif ( computed ) {\n\n\t\t\t\t// Certain elements can have dimension info if we invisibly show them\n\t\t\t\t// but it must have a current display style that would benefit\n\t\t\t\treturn rdisplayswap.test( jQuery.css( elem, \"display\" ) ) &&\n\n\t\t\t\t\t// Support: Safari 8+\n\t\t\t\t\t// Table columns in Safari have non-zero offsetWidth & zero\n\t\t\t\t\t// getBoundingClientRect().width unless display is changed.\n\t\t\t\t\t// Support: IE <=11 only\n\t\t\t\t\t// Running getBoundingClientRect on a disconnected node\n\t\t\t\t\t// in IE throws an error.\n\t\t\t\t\t( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ?\n\t\t\t\t\tswap( elem, cssShow, function() {\n\t\t\t\t\t\treturn getWidthOrHeight( elem, dimension, extra );\n\t\t\t\t\t} ) :\n\t\t\t\t\tgetWidthOrHeight( elem, dimension, extra );\n\t\t\t}\n\t\t},\n\n\t\tset: function( elem, value, extra ) {\n\t\t\tvar matches,\n\t\t\t\tstyles = getStyles( elem ),\n\n\t\t\t\t// Only read styles.position if the test has a chance to fail\n\t\t\t\t// to avoid forcing a reflow.\n\t\t\t\tscrollboxSizeBuggy = !support.scrollboxSize() &&\n\t\t\t\t\tstyles.position === \"absolute\",\n\n\t\t\t\t// To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991)\n\t\t\t\tboxSizingNeeded = scrollboxSizeBuggy || extra,\n\t\t\t\tisBorderBox = boxSizingNeeded &&\n\t\t\t\t\tjQuery.css( elem, \"boxSizing\", false, styles ) === \"border-box\",\n\t\t\t\tsubtract = extra ?\n\t\t\t\t\tboxModelAdjustment(\n\t\t\t\t\t\telem,\n\t\t\t\t\t\tdimension,\n\t\t\t\t\t\textra,\n\t\t\t\t\t\tisBorderBox,\n\t\t\t\t\t\tstyles\n\t\t\t\t\t) :\n\t\t\t\t\t0;\n\n\t\t\t// Account for unreliable border-box dimensions by comparing offset* to computed and\n\t\t\t// faking a content-box to get border and padding (gh-3699)\n\t\t\tif ( isBorderBox && scrollboxSizeBuggy ) {\n\t\t\t\tsubtract -= Math.ceil(\n\t\t\t\t\telem[ \"offset\" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -\n\t\t\t\t\tparseFloat( styles[ dimension ] ) -\n\t\t\t\t\tboxModelAdjustment( elem, dimension, \"border\", false, styles ) -\n\t\t\t\t\t0.5\n\t\t\t\t);\n\t\t\t}\n\n\t\t\t// Convert to pixels if value adjustment is needed\n\t\t\tif ( subtract && ( matches = rcssNum.exec( value ) ) &&\n\t\t\t\t( matches[ 3 ] || \"px\" ) !== \"px\" ) {\n\n\t\t\t\telem.style[ dimension ] = value;\n\t\t\t\tvalue = jQuery.css( elem, dimension );\n\t\t\t}\n\n\t\t\treturn setPositiveNumber( elem, value, subtract );\n\t\t}\n\t};\n} );\n\njQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft,\n\tfunction( elem, computed ) {\n\t\tif ( computed ) {\n\t\t\treturn ( parseFloat( curCSS( elem, \"marginLeft\" ) ) ||\n\t\t\t\telem.getBoundingClientRect().left -\n\t\t\t\t\tswap( elem, { marginLeft: 0 }, function() {\n\t\t\t\t\t\treturn elem.getBoundingClientRect().left;\n\t\t\t\t\t} )\n\t\t\t) + \"px\";\n\t\t}\n\t}\n);\n\n// These hooks are used by animate to expand properties\njQuery.each( {\n\tmargin: \"\",\n\tpadding: \"\",\n\tborder: \"Width\"\n}, function( prefix, suffix ) {\n\tjQuery.cssHooks[ prefix + suffix ] = {\n\t\texpand: function( value ) {\n\t\t\tvar i = 0,\n\t\t\t\texpanded = {},\n\n\t\t\t\t// Assumes a single number if not a string\n\t\t\t\tparts = typeof value === \"string\" ? value.split( \" \" ) : [ value ];\n\n\t\t\tfor ( ; i < 4; i++ ) {\n\t\t\t\texpanded[ prefix + cssExpand[ i ] + suffix ] =\n\t\t\t\t\tparts[ i ] || parts[ i - 2 ] || parts[ 0 ];\n\t\t\t}\n\n\t\t\treturn expanded;\n\t\t}\n\t};\n\n\tif ( prefix !== \"margin\" ) {\n\t\tjQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;\n\t}\n} );\n\njQuery.fn.extend( {\n\tcss: function( name, value ) {\n\t\treturn access( this, function( elem, name, value ) {\n\t\t\tvar styles, len,\n\t\t\t\tmap = {},\n\t\t\t\ti = 0;\n\n\t\t\tif ( Array.isArray( name ) ) {\n\t\t\t\tstyles = getStyles( elem );\n\t\t\t\tlen = name.length;\n\n\t\t\t\tfor ( ; i < len; i++ ) {\n\t\t\t\t\tmap[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles );\n\t\t\t\t}\n\n\t\t\t\treturn map;\n\t\t\t}\n\n\t\t\treturn value !== undefined ?\n\t\t\t\tjQuery.style( elem, name, value ) :\n\t\t\t\tjQuery.css( elem, name );\n\t\t}, name, value, arguments.length > 1 );\n\t}\n} );\n\n\nfunction Tween( elem, options, prop, end, easing ) {\n\treturn new Tween.prototype.init( elem, options, prop, end, easing );\n}\njQuery.Tween = Tween;\n\nTween.prototype = {\n\tconstructor: Tween,\n\tinit: function( elem, options, prop, end, easing, unit ) {\n\t\tthis.elem = elem;\n\t\tthis.prop = prop;\n\t\tthis.easing = easing || jQuery.easing._default;\n\t\tthis.options = options;\n\t\tthis.start = this.now = this.cur();\n\t\tthis.end = end;\n\t\tthis.unit = unit || ( jQuery.cssNumber[ prop ] ? \"\" : \"px\" );\n\t},\n\tcur: function() {\n\t\tvar hooks = Tween.propHooks[ this.prop ];\n\n\t\treturn hooks && hooks.get ?\n\t\t\thooks.get( this ) :\n\t\t\tTween.propHooks._default.get( this );\n\t},\n\trun: function( percent ) {\n\t\tvar eased,\n\t\t\thooks = Tween.propHooks[ this.prop ];\n\n\t\tif ( this.options.duration ) {\n\t\t\tthis.pos = eased = jQuery.easing[ this.easing ](\n\t\t\t\tpercent, this.options.duration * percent, 0, 1, this.options.duration\n\t\t\t);\n\t\t} else {\n\t\t\tthis.pos = eased = percent;\n\t\t}\n\t\tthis.now = ( this.end - this.start ) * eased + this.start;\n\n\t\tif ( this.options.step ) {\n\t\t\tthis.options.step.call( this.elem, this.now, this );\n\t\t}\n\n\t\tif ( hooks && hooks.set ) {\n\t\t\thooks.set( this );\n\t\t} else {\n\t\t\tTween.propHooks._default.set( this );\n\t\t}\n\t\treturn this;\n\t}\n};\n\nTween.prototype.init.prototype = Tween.prototype;\n\nTween.propHooks = {\n\t_default: {\n\t\tget: function( tween ) {\n\t\t\tvar result;\n\n\t\t\t// Use a property on the element directly when it is not a DOM element,\n\t\t\t// or when there is no matching style property that exists.\n\t\t\tif ( tween.elem.nodeType !== 1 ||\n\t\t\t\ttween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) {\n\t\t\t\treturn tween.elem[ tween.prop ];\n\t\t\t}\n\n\t\t\t// Passing an empty string as a 3rd parameter to .css will automatically\n\t\t\t// attempt a parseFloat and fallback to a string if the parse fails.\n\t\t\t// Simple values such as \"10px\" are parsed to Float;\n\t\t\t// complex values such as \"rotate(1rad)\" are returned as-is.\n\t\t\tresult = jQuery.css( tween.elem, tween.prop, \"\" );\n\n\t\t\t// Empty strings, null, undefined and \"auto\" are converted to 0.\n\t\t\treturn !result || result === \"auto\" ? 0 : result;\n\t\t},\n\t\tset: function( tween ) {\n\n\t\t\t// Use step hook for back compat.\n\t\t\t// Use cssHook if its there.\n\t\t\t// Use .style if available and use plain properties where available.\n\t\t\tif ( jQuery.fx.step[ tween.prop ] ) {\n\t\t\t\tjQuery.fx.step[ tween.prop ]( tween );\n\t\t\t} else if ( tween.elem.nodeType === 1 && (\n\t\t\t\tjQuery.cssHooks[ tween.prop ] ||\n\t\t\t\t\ttween.elem.style[ finalPropName( tween.prop ) ] != null ) ) {\n\t\t\t\tjQuery.style( tween.elem, tween.prop, tween.now + tween.unit );\n\t\t\t} else {\n\t\t\t\ttween.elem[ tween.prop ] = tween.now;\n\t\t\t}\n\t\t}\n\t}\n};\n\n// Support: IE <=9 only\n// Panic based approach to setting things on disconnected nodes\nTween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {\n\tset: function( tween ) {\n\t\tif ( tween.elem.nodeType && tween.elem.parentNode ) {\n\t\t\ttween.elem[ tween.prop ] = tween.now;\n\t\t}\n\t}\n};\n\njQuery.easing = {\n\tlinear: function( p ) {\n\t\treturn p;\n\t},\n\tswing: function( p ) {\n\t\treturn 0.5 - Math.cos( p * Math.PI ) / 2;\n\t},\n\t_default: \"swing\"\n};\n\njQuery.fx = Tween.prototype.init;\n\n// Back compat <1.8 extension point\njQuery.fx.step = {};\n\n\n\n\nvar\n\tfxNow, inProgress,\n\trfxtypes = /^(?:toggle|show|hide)$/,\n\trrun = /queueHooks$/;\n\nfunction schedule() {\n\tif ( inProgress ) {\n\t\tif ( document.hidden === false && window.requestAnimationFrame ) {\n\t\t\twindow.requestAnimationFrame( schedule );\n\t\t} else {\n\t\t\twindow.setTimeout( schedule, jQuery.fx.interval );\n\t\t}\n\n\t\tjQuery.fx.tick();\n\t}\n}\n\n// Animations created synchronously will run synchronously\nfunction createFxNow() {\n\twindow.setTimeout( function() {\n\t\tfxNow = undefined;\n\t} );\n\treturn ( fxNow = Date.now() );\n}\n\n// Generate parameters to create a standard animation\nfunction genFx( type, includeWidth ) {\n\tvar which,\n\t\ti = 0,\n\t\tattrs = { height: type };\n\n\t// If we include width, step value is 1 to do all cssExpand values,\n\t// otherwise step value is 2 to skip over Left and Right\n\tincludeWidth = includeWidth ? 1 : 0;\n\tfor ( ; i < 4; i += 2 - includeWidth ) {\n\t\twhich = cssExpand[ i ];\n\t\tattrs[ \"margin\" + which ] = attrs[ \"padding\" + which ] = type;\n\t}\n\n\tif ( includeWidth ) {\n\t\tattrs.opacity = attrs.width = type;\n\t}\n\n\treturn attrs;\n}\n\nfunction createTween( value, prop, animation ) {\n\tvar tween,\n\t\tcollection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ \"*\" ] ),\n\t\tindex = 0,\n\t\tlength = collection.length;\n\tfor ( ; index < length; index++ ) {\n\t\tif ( ( tween = collection[ index ].call( animation, prop, value ) ) ) {\n\n\t\t\t// We're done with this property\n\t\t\treturn tween;\n\t\t}\n\t}\n}\n\nfunction defaultPrefilter( elem, props, opts ) {\n\tvar prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display,\n\t\tisBox = \"width\" in props || \"height\" in props,\n\t\tanim = this,\n\t\torig = {},\n\t\tstyle = elem.style,\n\t\thidden = elem.nodeType && isHiddenWithinTree( elem ),\n\t\tdataShow = dataPriv.get( elem, \"fxshow\" );\n\n\t// Queue-skipping animations hijack the fx hooks\n\tif ( !opts.queue ) {\n\t\thooks = jQuery._queueHooks( elem, \"fx\" );\n\t\tif ( hooks.unqueued == null ) {\n\t\t\thooks.unqueued = 0;\n\t\t\toldfire = hooks.empty.fire;\n\t\t\thooks.empty.fire = function() {\n\t\t\t\tif ( !hooks.unqueued ) {\n\t\t\t\t\toldfire();\n\t\t\t\t}\n\t\t\t};\n\t\t}\n\t\thooks.unqueued++;\n\n\t\tanim.always( function() {\n\n\t\t\t// Ensure the complete handler is called before this completes\n\t\t\tanim.always( function() {\n\t\t\t\thooks.unqueued--;\n\t\t\t\tif ( !jQuery.queue( elem, \"fx\" ).length ) {\n\t\t\t\t\thooks.empty.fire();\n\t\t\t\t}\n\t\t\t} );\n\t\t} );\n\t}\n\n\t// Detect show/hide animations\n\tfor ( prop in props ) {\n\t\tvalue = props[ prop ];\n\t\tif ( rfxtypes.test( value ) ) {\n\t\t\tdelete props[ prop ];\n\t\t\ttoggle = toggle || value === \"toggle\";\n\t\t\tif ( value === ( hidden ? \"hide\" : \"show\" ) ) {\n\n\t\t\t\t// Pretend to be hidden if this is a \"show\" and\n\t\t\t\t// there is still data from a stopped show/hide\n\t\t\t\tif ( value === \"show\" && dataShow && dataShow[ prop ] !== undefined ) {\n\t\t\t\t\thidden = true;\n\n\t\t\t\t// Ignore all other no-op show/hide data\n\t\t\t\t} else {\n\t\t\t\t\tcontinue;\n\t\t\t\t}\n\t\t\t}\n\t\t\torig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );\n\t\t}\n\t}\n\n\t// Bail out if this is a no-op like .hide().hide()\n\tpropTween = !jQuery.isEmptyObject( props );\n\tif ( !propTween && jQuery.isEmptyObject( orig ) ) {\n\t\treturn;\n\t}\n\n\t// Restrict \"overflow\" and \"display\" styles during box animations\n\tif ( isBox && elem.nodeType === 1 ) {\n\n\t\t// Support: IE <=9 - 11, Edge 12 - 15\n\t\t// Record all 3 overflow attributes because IE does not infer the shorthand\n\t\t// from identically-valued overflowX and overflowY and Edge just mirrors\n\t\t// the overflowX value there.\n\t\topts.overflow = [ style.overflow, style.overflowX, style.overflowY ];\n\n\t\t// Identify a display type, preferring old show/hide data over the CSS cascade\n\t\trestoreDisplay = dataShow && dataShow.display;\n\t\tif ( restoreDisplay == null ) {\n\t\t\trestoreDisplay = dataPriv.get( elem, \"display\" );\n\t\t}\n\t\tdisplay = jQuery.css( elem, \"display\" );\n\t\tif ( display === \"none\" ) {\n\t\t\tif ( restoreDisplay ) {\n\t\t\t\tdisplay = restoreDisplay;\n\t\t\t} else {\n\n\t\t\t\t// Get nonempty value(s) by temporarily forcing visibility\n\t\t\t\tshowHide( [ elem ], true );\n\t\t\t\trestoreDisplay = elem.style.display || restoreDisplay;\n\t\t\t\tdisplay = jQuery.css( elem, \"display\" );\n\t\t\t\tshowHide( [ elem ] );\n\t\t\t}\n\t\t}\n\n\t\t// Animate inline elements as inline-block\n\t\tif ( display === \"inline\" || display === \"inline-block\" && restoreDisplay != null ) {\n\t\t\tif ( jQuery.css( elem, \"float\" ) === \"none\" ) {\n\n\t\t\t\t// Restore the original display value at the end of pure show/hide animations\n\t\t\t\tif ( !propTween ) {\n\t\t\t\t\tanim.done( function() {\n\t\t\t\t\t\tstyle.display = restoreDisplay;\n\t\t\t\t\t} );\n\t\t\t\t\tif ( restoreDisplay == null ) {\n\t\t\t\t\t\tdisplay = style.display;\n\t\t\t\t\t\trestoreDisplay = display === \"none\" ? \"\" : display;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\tstyle.display = \"inline-block\";\n\t\t\t}\n\t\t}\n\t}\n\n\tif ( opts.overflow ) {\n\t\tstyle.overflow = \"hidden\";\n\t\tanim.always( function() {\n\t\t\tstyle.overflow = opts.overflow[ 0 ];\n\t\t\tstyle.overflowX = opts.overflow[ 1 ];\n\t\t\tstyle.overflowY = opts.overflow[ 2 ];\n\t\t} );\n\t}\n\n\t// Implement show/hide animations\n\tpropTween = false;\n\tfor ( prop in orig ) {\n\n\t\t// General show/hide setup for this element animation\n\t\tif ( !propTween ) {\n\t\t\tif ( dataShow ) {\n\t\t\t\tif ( \"hidden\" in dataShow ) {\n\t\t\t\t\thidden = dataShow.hidden;\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tdataShow = dataPriv.access( elem, \"fxshow\", { display: restoreDisplay } );\n\t\t\t}\n\n\t\t\t// Store hidden/visible for toggle so `.stop().toggle()` \"reverses\"\n\t\t\tif ( toggle ) {\n\t\t\t\tdataShow.hidden = !hidden;\n\t\t\t}\n\n\t\t\t// Show elements before animating them\n\t\t\tif ( hidden ) {\n\t\t\t\tshowHide( [ elem ], true );\n\t\t\t}\n\n\t\t\t/* eslint-disable no-loop-func */\n\n\t\t\tanim.done( function() {\n\n\t\t\t\t/* eslint-enable no-loop-func */\n\n\t\t\t\t// The final step of a \"hide\" animation is actually hiding the element\n\t\t\t\tif ( !hidden ) {\n\t\t\t\t\tshowHide( [ elem ] );\n\t\t\t\t}\n\t\t\t\tdataPriv.remove( elem, \"fxshow\" );\n\t\t\t\tfor ( prop in orig ) {\n\t\t\t\t\tjQuery.style( elem, prop, orig[ prop ] );\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\n\t\t// Per-property setup\n\t\tpropTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );\n\t\tif ( !( prop in dataShow ) ) {\n\t\t\tdataShow[ prop ] = propTween.start;\n\t\t\tif ( hidden ) {\n\t\t\t\tpropTween.end = propTween.start;\n\t\t\t\tpropTween.start = 0;\n\t\t\t}\n\t\t}\n\t}\n}\n\nfunction propFilter( props, specialEasing ) {\n\tvar index, name, easing, value, hooks;\n\n\t// camelCase, specialEasing and expand cssHook pass\n\tfor ( index in props ) {\n\t\tname = camelCase( index );\n\t\teasing = specialEasing[ name ];\n\t\tvalue = props[ index ];\n\t\tif ( Array.isArray( value ) ) {\n\t\t\teasing = value[ 1 ];\n\t\t\tvalue = props[ index ] = value[ 0 ];\n\t\t}\n\n\t\tif ( index !== name ) {\n\t\t\tprops[ name ] = value;\n\t\t\tdelete props[ index ];\n\t\t}\n\n\t\thooks = jQuery.cssHooks[ name ];\n\t\tif ( hooks && \"expand\" in hooks ) {\n\t\t\tvalue = hooks.expand( value );\n\t\t\tdelete props[ name ];\n\n\t\t\t// Not quite $.extend, this won't overwrite existing keys.\n\t\t\t// Reusing 'index' because we have the correct \"name\"\n\t\t\tfor ( index in value ) {\n\t\t\t\tif ( !( index in props ) ) {\n\t\t\t\t\tprops[ index ] = value[ index ];\n\t\t\t\t\tspecialEasing[ index ] = easing;\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tspecialEasing[ name ] = easing;\n\t\t}\n\t}\n}\n\nfunction Animation( elem, properties, options ) {\n\tvar result,\n\t\tstopped,\n\t\tindex = 0,\n\t\tlength = Animation.prefilters.length,\n\t\tdeferred = jQuery.Deferred().always( function() {\n\n\t\t\t// Don't match elem in the :animated selector\n\t\t\tdelete tick.elem;\n\t\t} ),\n\t\ttick = function() {\n\t\t\tif ( stopped ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t\tvar currentTime = fxNow || createFxNow(),\n\t\t\t\tremaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),\n\n\t\t\t\t// Support: Android 2.3 only\n\t\t\t\t// Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (trac-12497)\n\t\t\t\ttemp = remaining / animation.duration || 0,\n\t\t\t\tpercent = 1 - temp,\n\t\t\t\tindex = 0,\n\t\t\t\tlength = animation.tweens.length;\n\n\t\t\tfor ( ; index < length; index++ ) {\n\t\t\t\tanimation.tweens[ index ].run( percent );\n\t\t\t}\n\n\t\t\tdeferred.notifyWith( elem, [ animation, percent, remaining ] );\n\n\t\t\t// If there's more to do, yield\n\t\t\tif ( percent < 1 && length ) {\n\t\t\t\treturn remaining;\n\t\t\t}\n\n\t\t\t// If this was an empty animation, synthesize a final progress notification\n\t\t\tif ( !length ) {\n\t\t\t\tdeferred.notifyWith( elem, [ animation, 1, 0 ] );\n\t\t\t}\n\n\t\t\t// Resolve the animation and report its conclusion\n\t\t\tdeferred.resolveWith( elem, [ animation ] );\n\t\t\treturn false;\n\t\t},\n\t\tanimation = deferred.promise( {\n\t\t\telem: elem,\n\t\t\tprops: jQuery.extend( {}, properties ),\n\t\t\topts: jQuery.extend( true, {\n\t\t\t\tspecialEasing: {},\n\t\t\t\teasing: jQuery.easing._default\n\t\t\t}, options ),\n\t\t\toriginalProperties: properties,\n\t\t\toriginalOptions: options,\n\t\t\tstartTime: fxNow || createFxNow(),\n\t\t\tduration: options.duration,\n\t\t\ttweens: [],\n\t\t\tcreateTween: function( prop, end ) {\n\t\t\t\tvar tween = jQuery.Tween( elem, animation.opts, prop, end,\n\t\t\t\t\tanimation.opts.specialEasing[ prop ] || animation.opts.easing );\n\t\t\t\tanimation.tweens.push( tween );\n\t\t\t\treturn tween;\n\t\t\t},\n\t\t\tstop: function( gotoEnd ) {\n\t\t\t\tvar index = 0,\n\n\t\t\t\t\t// If we are going to the end, we want to run all the tweens\n\t\t\t\t\t// otherwise we skip this part\n\t\t\t\t\tlength = gotoEnd ? animation.tweens.length : 0;\n\t\t\t\tif ( stopped ) {\n\t\t\t\t\treturn this;\n\t\t\t\t}\n\t\t\t\tstopped = true;\n\t\t\t\tfor ( ; index < length; index++ ) {\n\t\t\t\t\tanimation.tweens[ index ].run( 1 );\n\t\t\t\t}\n\n\t\t\t\t// Resolve when we played the last frame; otherwise, reject\n\t\t\t\tif ( gotoEnd ) {\n\t\t\t\t\tdeferred.notifyWith( elem, [ animation, 1, 0 ] );\n\t\t\t\t\tdeferred.resolveWith( elem, [ animation, gotoEnd ] );\n\t\t\t\t} else {\n\t\t\t\t\tdeferred.rejectWith( elem, [ animation, gotoEnd ] );\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t}\n\t\t} ),\n\t\tprops = animation.props;\n\n\tpropFilter( props, animation.opts.specialEasing );\n\n\tfor ( ; index < length; index++ ) {\n\t\tresult = Animation.prefilters[ index ].call( animation, elem, props, animation.opts );\n\t\tif ( result ) {\n\t\t\tif ( isFunction( result.stop ) ) {\n\t\t\t\tjQuery._queueHooks( animation.elem, animation.opts.queue ).stop =\n\t\t\t\t\tresult.stop.bind( result );\n\t\t\t}\n\t\t\treturn result;\n\t\t}\n\t}\n\n\tjQuery.map( props, createTween, animation );\n\n\tif ( isFunction( animation.opts.start ) ) {\n\t\tanimation.opts.start.call( elem, animation );\n\t}\n\n\t// Attach callbacks from options\n\tanimation\n\t\t.progress( animation.opts.progress )\n\t\t.done( animation.opts.done, animation.opts.complete )\n\t\t.fail( animation.opts.fail )\n\t\t.always( animation.opts.always );\n\n\tjQuery.fx.timer(\n\t\tjQuery.extend( tick, {\n\t\t\telem: elem,\n\t\t\tanim: animation,\n\t\t\tqueue: animation.opts.queue\n\t\t} )\n\t);\n\n\treturn animation;\n}\n\njQuery.Animation = jQuery.extend( Animation, {\n\n\ttweeners: {\n\t\t\"*\": [ function( prop, value ) {\n\t\t\tvar tween = this.createTween( prop, value );\n\t\t\tadjustCSS( tween.elem, prop, rcssNum.exec( value ), tween );\n\t\t\treturn tween;\n\t\t} ]\n\t},\n\n\ttweener: function( props, callback ) {\n\t\tif ( isFunction( props ) ) {\n\t\t\tcallback = props;\n\t\t\tprops = [ \"*\" ];\n\t\t} else {\n\t\t\tprops = props.match( rnothtmlwhite );\n\t\t}\n\n\t\tvar prop,\n\t\t\tindex = 0,\n\t\t\tlength = props.length;\n\n\t\tfor ( ; index < length; index++ ) {\n\t\t\tprop = props[ index ];\n\t\t\tAnimation.tweeners[ prop ] = Animation.tweeners[ prop ] || [];\n\t\t\tAnimation.tweeners[ prop ].unshift( callback );\n\t\t}\n\t},\n\n\tprefilters: [ defaultPrefilter ],\n\n\tprefilter: function( callback, prepend ) {\n\t\tif ( prepend ) {\n\t\t\tAnimation.prefilters.unshift( callback );\n\t\t} else {\n\t\t\tAnimation.prefilters.push( callback );\n\t\t}\n\t}\n} );\n\njQuery.speed = function( speed, easing, fn ) {\n\tvar opt = speed && typeof speed === \"object\" ? jQuery.extend( {}, speed ) : {\n\t\tcomplete: fn || !fn && easing ||\n\t\t\tisFunction( speed ) && speed,\n\t\tduration: speed,\n\t\teasing: fn && easing || easing && !isFunction( easing ) && easing\n\t};\n\n\t// Go to the end state if fx are off\n\tif ( jQuery.fx.off ) {\n\t\topt.duration = 0;\n\n\t} else {\n\t\tif ( typeof opt.duration !== \"number\" ) {\n\t\t\tif ( opt.duration in jQuery.fx.speeds ) {\n\t\t\t\topt.duration = jQuery.fx.speeds[ opt.duration ];\n\n\t\t\t} else {\n\t\t\t\topt.duration = jQuery.fx.speeds._default;\n\t\t\t}\n\t\t}\n\t}\n\n\t// Normalize opt.queue - true/undefined/null -> \"fx\"\n\tif ( opt.queue == null || opt.queue === true ) {\n\t\topt.queue = \"fx\";\n\t}\n\n\t// Queueing\n\topt.old = opt.complete;\n\n\topt.complete = function() {\n\t\tif ( isFunction( opt.old ) ) {\n\t\t\topt.old.call( this );\n\t\t}\n\n\t\tif ( opt.queue ) {\n\t\t\tjQuery.dequeue( this, opt.queue );\n\t\t}\n\t};\n\n\treturn opt;\n};\n\njQuery.fn.extend( {\n\tfadeTo: function( speed, to, easing, callback ) {\n\n\t\t// Show any hidden elements after setting opacity to 0\n\t\treturn this.filter( isHiddenWithinTree ).css( \"opacity\", 0 ).show()\n\n\t\t\t// Animate to the value specified\n\t\t\t.end().animate( { opacity: to }, speed, easing, callback );\n\t},\n\tanimate: function( prop, speed, easing, callback ) {\n\t\tvar empty = jQuery.isEmptyObject( prop ),\n\t\t\toptall = jQuery.speed( speed, easing, callback ),\n\t\t\tdoAnimation = function() {\n\n\t\t\t\t// Operate on a copy of prop so per-property easing won't be lost\n\t\t\t\tvar anim = Animation( this, jQuery.extend( {}, prop ), optall );\n\n\t\t\t\t// Empty animations, or finishing resolves immediately\n\t\t\t\tif ( empty || dataPriv.get( this, \"finish\" ) ) {\n\t\t\t\t\tanim.stop( true );\n\t\t\t\t}\n\t\t\t};\n\n\t\tdoAnimation.finish = doAnimation;\n\n\t\treturn empty || optall.queue === false ?\n\t\t\tthis.each( doAnimation ) :\n\t\t\tthis.queue( optall.queue, doAnimation );\n\t},\n\tstop: function( type, clearQueue, gotoEnd ) {\n\t\tvar stopQueue = function( hooks ) {\n\t\t\tvar stop = hooks.stop;\n\t\t\tdelete hooks.stop;\n\t\t\tstop( gotoEnd );\n\t\t};\n\n\t\tif ( typeof type !== \"string\" ) {\n\t\t\tgotoEnd = clearQueue;\n\t\t\tclearQueue = type;\n\t\t\ttype = undefined;\n\t\t}\n\t\tif ( clearQueue ) {\n\t\t\tthis.queue( type || \"fx\", [] );\n\t\t}\n\n\t\treturn this.each( function() {\n\t\t\tvar dequeue = true,\n\t\t\t\tindex = type != null && type + \"queueHooks\",\n\t\t\t\ttimers = jQuery.timers,\n\t\t\t\tdata = dataPriv.get( this );\n\n\t\t\tif ( index ) {\n\t\t\t\tif ( data[ index ] && data[ index ].stop ) {\n\t\t\t\t\tstopQueue( data[ index ] );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tfor ( index in data ) {\n\t\t\t\t\tif ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {\n\t\t\t\t\t\tstopQueue( data[ index ] );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfor ( index = timers.length; index--; ) {\n\t\t\t\tif ( timers[ index ].elem === this &&\n\t\t\t\t\t( type == null || timers[ index ].queue === type ) ) {\n\n\t\t\t\t\ttimers[ index ].anim.stop( gotoEnd );\n\t\t\t\t\tdequeue = false;\n\t\t\t\t\ttimers.splice( index, 1 );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Start the next in the queue if the last step wasn't forced.\n\t\t\t// Timers currently will call their complete callbacks, which\n\t\t\t// will dequeue but only if they were gotoEnd.\n\t\t\tif ( dequeue || !gotoEnd ) {\n\t\t\t\tjQuery.dequeue( this, type );\n\t\t\t}\n\t\t} );\n\t},\n\tfinish: function( type ) {\n\t\tif ( type !== false ) {\n\t\t\ttype = type || \"fx\";\n\t\t}\n\t\treturn this.each( function() {\n\t\t\tvar index,\n\t\t\t\tdata = dataPriv.get( this ),\n\t\t\t\tqueue = data[ type + \"queue\" ],\n\t\t\t\thooks = data[ type + \"queueHooks\" ],\n\t\t\t\ttimers = jQuery.timers,\n\t\t\t\tlength = queue ? queue.length : 0;\n\n\t\t\t// Enable finishing flag on private data\n\t\t\tdata.finish = true;\n\n\t\t\t// Empty the queue first\n\t\t\tjQuery.queue( this, type, [] );\n\n\t\t\tif ( hooks && hooks.stop ) {\n\t\t\t\thooks.stop.call( this, true );\n\t\t\t}\n\n\t\t\t// Look for any active animations, and finish them\n\t\t\tfor ( index = timers.length; index--; ) {\n\t\t\t\tif ( timers[ index ].elem === this && timers[ index ].queue === type ) {\n\t\t\t\t\ttimers[ index ].anim.stop( true );\n\t\t\t\t\ttimers.splice( index, 1 );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Look for any animations in the old queue and finish them\n\t\t\tfor ( index = 0; index < length; index++ ) {\n\t\t\t\tif ( queue[ index ] && queue[ index ].finish ) {\n\t\t\t\t\tqueue[ index ].finish.call( this );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Turn off finishing flag\n\t\t\tdelete data.finish;\n\t\t} );\n\t}\n} );\n\njQuery.each( [ \"toggle\", \"show\", \"hide\" ], function( _i, name ) {\n\tvar cssFn = jQuery.fn[ name ];\n\tjQuery.fn[ name ] = function( speed, easing, callback ) {\n\t\treturn speed == null || typeof speed === \"boolean\" ?\n\t\t\tcssFn.apply( this, arguments ) :\n\t\t\tthis.animate( genFx( name, true ), speed, easing, callback );\n\t};\n} );\n\n// Generate shortcuts for custom animations\njQuery.each( {\n\tslideDown: genFx( \"show\" ),\n\tslideUp: genFx( \"hide\" ),\n\tslideToggle: genFx( \"toggle\" ),\n\tfadeIn: { opacity: \"show\" },\n\tfadeOut: { opacity: \"hide\" },\n\tfadeToggle: { opacity: \"toggle\" }\n}, function( name, props ) {\n\tjQuery.fn[ name ] = function( speed, easing, callback ) {\n\t\treturn this.animate( props, speed, easing, callback );\n\t};\n} );\n\njQuery.timers = [];\njQuery.fx.tick = function() {\n\tvar timer,\n\t\ti = 0,\n\t\ttimers = jQuery.timers;\n\n\tfxNow = Date.now();\n\n\tfor ( ; i < timers.length; i++ ) {\n\t\ttimer = timers[ i ];\n\n\t\t// Run the timer and safely remove it when done (allowing for external removal)\n\t\tif ( !timer() && timers[ i ] === timer ) {\n\t\t\ttimers.splice( i--, 1 );\n\t\t}\n\t}\n\n\tif ( !timers.length ) {\n\t\tjQuery.fx.stop();\n\t}\n\tfxNow = undefined;\n};\n\njQuery.fx.timer = function( timer ) {\n\tjQuery.timers.push( timer );\n\tjQuery.fx.start();\n};\n\njQuery.fx.interval = 13;\njQuery.fx.start = function() {\n\tif ( inProgress ) {\n\t\treturn;\n\t}\n\n\tinProgress = true;\n\tschedule();\n};\n\njQuery.fx.stop = function() {\n\tinProgress = null;\n};\n\njQuery.fx.speeds = {\n\tslow: 600,\n\tfast: 200,\n\n\t// Default speed\n\t_default: 400\n};\n\n\n// Based off of the plugin by Clint Helfers, with permission.\njQuery.fn.delay = function( time, type ) {\n\ttime = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;\n\ttype = type || \"fx\";\n\n\treturn this.queue( type, function( next, hooks ) {\n\t\tvar timeout = window.setTimeout( next, time );\n\t\thooks.stop = function() {\n\t\t\twindow.clearTimeout( timeout );\n\t\t};\n\t} );\n};\n\n\n( function() {\n\tvar input = document.createElement( \"input\" ),\n\t\tselect = document.createElement( \"select\" ),\n\t\topt = select.appendChild( document.createElement( \"option\" ) );\n\n\tinput.type = \"checkbox\";\n\n\t// Support: Android <=4.3 only\n\t// Default value for a checkbox should be \"on\"\n\tsupport.checkOn = input.value !== \"\";\n\n\t// Support: IE <=11 only\n\t// Must access selectedIndex to make default options select\n\tsupport.optSelected = opt.selected;\n\n\t// Support: IE <=11 only\n\t// An input loses its value after becoming a radio\n\tinput = document.createElement( \"input\" );\n\tinput.value = \"t\";\n\tinput.type = \"radio\";\n\tsupport.radioValue = input.value === \"t\";\n} )();\n\n\nvar boolHook,\n\tattrHandle = jQuery.expr.attrHandle;\n\njQuery.fn.extend( {\n\tattr: function( name, value ) {\n\t\treturn access( this, jQuery.attr, name, value, arguments.length > 1 );\n\t},\n\n\tremoveAttr: function( name ) {\n\t\treturn this.each( function() {\n\t\t\tjQuery.removeAttr( this, name );\n\t\t} );\n\t}\n} );\n\njQuery.extend( {\n\tattr: function( elem, name, value ) {\n\t\tvar ret, hooks,\n\t\t\tnType = elem.nodeType;\n\n\t\t// Don't get/set attributes on text, comment and attribute nodes\n\t\tif ( nType === 3 || nType === 8 || nType === 2 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Fallback to prop when attributes are not supported\n\t\tif ( typeof elem.getAttribute === \"undefined\" ) {\n\t\t\treturn jQuery.prop( elem, name, value );\n\t\t}\n\n\t\t// Attribute hooks are determined by the lowercase version\n\t\t// Grab necessary hook if one is defined\n\t\tif ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {\n\t\t\thooks = jQuery.attrHooks[ name.toLowerCase() ] ||\n\t\t\t\t( jQuery.expr.match.bool.test( name ) ? boolHook : undefined );\n\t\t}\n\n\t\tif ( value !== undefined ) {\n\t\t\tif ( value === null ) {\n\t\t\t\tjQuery.removeAttr( elem, name );\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif ( hooks && \"set\" in hooks &&\n\t\t\t\t( ret = hooks.set( elem, value, name ) ) !== undefined ) {\n\t\t\t\treturn ret;\n\t\t\t}\n\n\t\t\telem.setAttribute( name, value + \"\" );\n\t\t\treturn value;\n\t\t}\n\n\t\tif ( hooks && \"get\" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {\n\t\t\treturn ret;\n\t\t}\n\n\t\tret = jQuery.find.attr( elem, name );\n\n\t\t// Non-existent attributes return null, we normalize to undefined\n\t\treturn ret == null ? undefined : ret;\n\t},\n\n\tattrHooks: {\n\t\ttype: {\n\t\t\tset: function( elem, value ) {\n\t\t\t\tif ( !support.radioValue && value === \"radio\" &&\n\t\t\t\t\tnodeName( elem, \"input\" ) ) {\n\t\t\t\t\tvar val = elem.value;\n\t\t\t\t\telem.setAttribute( \"type\", value );\n\t\t\t\t\tif ( val ) {\n\t\t\t\t\t\telem.value = val;\n\t\t\t\t\t}\n\t\t\t\t\treturn value;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t},\n\n\tremoveAttr: function( elem, value ) {\n\t\tvar name,\n\t\t\ti = 0,\n\n\t\t\t// Attribute names can contain non-HTML whitespace characters\n\t\t\t// https://html.spec.whatwg.org/multipage/syntax.html#attributes-2\n\t\t\tattrNames = value && value.match( rnothtmlwhite );\n\n\t\tif ( attrNames && elem.nodeType === 1 ) {\n\t\t\twhile ( ( name = attrNames[ i++ ] ) ) {\n\t\t\t\telem.removeAttribute( name );\n\t\t\t}\n\t\t}\n\t}\n} );\n\n// Hooks for boolean attributes\nboolHook = {\n\tset: function( elem, value, name ) {\n\t\tif ( value === false ) {\n\n\t\t\t// Remove boolean attributes when set to false\n\t\t\tjQuery.removeAttr( elem, name );\n\t\t} else {\n\t\t\telem.setAttribute( name, name );\n\t\t}\n\t\treturn name;\n\t}\n};\n\njQuery.each( jQuery.expr.match.bool.source.match( /\\w+/g ), function( _i, name ) {\n\tvar getter = attrHandle[ name ] || jQuery.find.attr;\n\n\tattrHandle[ name ] = function( elem, name, isXML ) {\n\t\tvar ret, handle,\n\t\t\tlowercaseName = name.toLowerCase();\n\n\t\tif ( !isXML ) {\n\n\t\t\t// Avoid an infinite loop by temporarily removing this function from the getter\n\t\t\thandle = attrHandle[ lowercaseName ];\n\t\t\tattrHandle[ lowercaseName ] = ret;\n\t\t\tret = getter( elem, name, isXML ) != null ?\n\t\t\t\tlowercaseName :\n\t\t\t\tnull;\n\t\t\tattrHandle[ lowercaseName ] = handle;\n\t\t}\n\t\treturn ret;\n\t};\n} );\n\n\n\n\nvar rfocusable = /^(?:input|select|textarea|button)$/i,\n\trclickable = /^(?:a|area)$/i;\n\njQuery.fn.extend( {\n\tprop: function( name, value ) {\n\t\treturn access( this, jQuery.prop, name, value, arguments.length > 1 );\n\t},\n\n\tremoveProp: function( name ) {\n\t\treturn this.each( function() {\n\t\t\tdelete this[ jQuery.propFix[ name ] || name ];\n\t\t} );\n\t}\n} );\n\njQuery.extend( {\n\tprop: function( elem, name, value ) {\n\t\tvar ret, hooks,\n\t\t\tnType = elem.nodeType;\n\n\t\t// Don't get/set properties on text, comment and attribute nodes\n\t\tif ( nType === 3 || nType === 8 || nType === 2 ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {\n\n\t\t\t// Fix name and attach hooks\n\t\t\tname = jQuery.propFix[ name ] || name;\n\t\t\thooks = jQuery.propHooks[ name ];\n\t\t}\n\n\t\tif ( value !== undefined ) {\n\t\t\tif ( hooks && \"set\" in hooks &&\n\t\t\t\t( ret = hooks.set( elem, value, name ) ) !== undefined ) {\n\t\t\t\treturn ret;\n\t\t\t}\n\n\t\t\treturn ( elem[ name ] = value );\n\t\t}\n\n\t\tif ( hooks && \"get\" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {\n\t\t\treturn ret;\n\t\t}\n\n\t\treturn elem[ name ];\n\t},\n\n\tpropHooks: {\n\t\ttabIndex: {\n\t\t\tget: function( elem ) {\n\n\t\t\t\t// Support: IE <=9 - 11 only\n\t\t\t\t// elem.tabIndex doesn't always return the\n\t\t\t\t// correct value when it hasn't been explicitly set\n\t\t\t\t// Use proper attribute retrieval (trac-12072)\n\t\t\t\tvar tabindex = jQuery.find.attr( elem, \"tabindex\" );\n\n\t\t\t\tif ( tabindex ) {\n\t\t\t\t\treturn parseInt( tabindex, 10 );\n\t\t\t\t}\n\n\t\t\t\tif (\n\t\t\t\t\trfocusable.test( elem.nodeName ) ||\n\t\t\t\t\trclickable.test( elem.nodeName ) &&\n\t\t\t\t\telem.href\n\t\t\t\t) {\n\t\t\t\t\treturn 0;\n\t\t\t\t}\n\n\t\t\t\treturn -1;\n\t\t\t}\n\t\t}\n\t},\n\n\tpropFix: {\n\t\t\"for\": \"htmlFor\",\n\t\t\"class\": \"className\"\n\t}\n} );\n\n// Support: IE <=11 only\n// Accessing the selectedIndex property\n// forces the browser to respect setting selected\n// on the option\n// The getter ensures a default option is selected\n// when in an optgroup\n// eslint rule \"no-unused-expressions\" is disabled for this code\n// since it considers such accessions noop\nif ( !support.optSelected ) {\n\tjQuery.propHooks.selected = {\n\t\tget: function( elem ) {\n\n\t\t\t/* eslint no-unused-expressions: \"off\" */\n\n\t\t\tvar parent = elem.parentNode;\n\t\t\tif ( parent && parent.parentNode ) {\n\t\t\t\tparent.parentNode.selectedIndex;\n\t\t\t}\n\t\t\treturn null;\n\t\t},\n\t\tset: function( elem ) {\n\n\t\t\t/* eslint no-unused-expressions: \"off\" */\n\n\t\t\tvar parent = elem.parentNode;\n\t\t\tif ( parent ) {\n\t\t\t\tparent.selectedIndex;\n\n\t\t\t\tif ( parent.parentNode ) {\n\t\t\t\t\tparent.parentNode.selectedIndex;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t};\n}\n\njQuery.each( [\n\t\"tabIndex\",\n\t\"readOnly\",\n\t\"maxLength\",\n\t\"cellSpacing\",\n\t\"cellPadding\",\n\t\"rowSpan\",\n\t\"colSpan\",\n\t\"useMap\",\n\t\"frameBorder\",\n\t\"contentEditable\"\n], function() {\n\tjQuery.propFix[ this.toLowerCase() ] = this;\n} );\n\n\n\n\n\t// Strip and collapse whitespace according to HTML spec\n\t// https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace\n\tfunction stripAndCollapse( value ) {\n\t\tvar tokens = value.match( rnothtmlwhite ) || [];\n\t\treturn tokens.join( \" \" );\n\t}\n\n\nfunction getClass( elem ) {\n\treturn elem.getAttribute && elem.getAttribute( \"class\" ) || \"\";\n}\n\nfunction classesToArray( value ) {\n\tif ( Array.isArray( value ) ) {\n\t\treturn value;\n\t}\n\tif ( typeof value === \"string\" ) {\n\t\treturn value.match( rnothtmlwhite ) || [];\n\t}\n\treturn [];\n}\n\njQuery.fn.extend( {\n\taddClass: function( value ) {\n\t\tvar classNames, cur, curValue, className, i, finalValue;\n\n\t\tif ( isFunction( value ) ) {\n\t\t\treturn this.each( function( j ) {\n\t\t\t\tjQuery( this ).addClass( value.call( this, j, getClass( this ) ) );\n\t\t\t} );\n\t\t}\n\n\t\tclassNames = classesToArray( value );\n\n\t\tif ( classNames.length ) {\n\t\t\treturn this.each( function() {\n\t\t\t\tcurValue = getClass( this );\n\t\t\t\tcur = this.nodeType === 1 && ( \" \" + stripAndCollapse( curValue ) + \" \" );\n\n\t\t\t\tif ( cur ) {\n\t\t\t\t\tfor ( i = 0; i < classNames.length; i++ ) {\n\t\t\t\t\t\tclassName = classNames[ i ];\n\t\t\t\t\t\tif ( cur.indexOf( \" \" + className + \" \" ) < 0 ) {\n\t\t\t\t\t\t\tcur += className + \" \";\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Only assign if different to avoid unneeded rendering.\n\t\t\t\t\tfinalValue = stripAndCollapse( cur );\n\t\t\t\t\tif ( curValue !== finalValue ) {\n\t\t\t\t\t\tthis.setAttribute( \"class\", finalValue );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\n\t\treturn this;\n\t},\n\n\tremoveClass: function( value ) {\n\t\tvar classNames, cur, curValue, className, i, finalValue;\n\n\t\tif ( isFunction( value ) ) {\n\t\t\treturn this.each( function( j ) {\n\t\t\t\tjQuery( this ).removeClass( value.call( this, j, getClass( this ) ) );\n\t\t\t} );\n\t\t}\n\n\t\tif ( !arguments.length ) {\n\t\t\treturn this.attr( \"class\", \"\" );\n\t\t}\n\n\t\tclassNames = classesToArray( value );\n\n\t\tif ( classNames.length ) {\n\t\t\treturn this.each( function() {\n\t\t\t\tcurValue = getClass( this );\n\n\t\t\t\t// This expression is here for better compressibility (see addClass)\n\t\t\t\tcur = this.nodeType === 1 && ( \" \" + stripAndCollapse( curValue ) + \" \" );\n\n\t\t\t\tif ( cur ) {\n\t\t\t\t\tfor ( i = 0; i < classNames.length; i++ ) {\n\t\t\t\t\t\tclassName = classNames[ i ];\n\n\t\t\t\t\t\t// Remove *all* instances\n\t\t\t\t\t\twhile ( cur.indexOf( \" \" + className + \" \" ) > -1 ) {\n\t\t\t\t\t\t\tcur = cur.replace( \" \" + className + \" \", \" \" );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Only assign if different to avoid unneeded rendering.\n\t\t\t\t\tfinalValue = stripAndCollapse( cur );\n\t\t\t\t\tif ( curValue !== finalValue ) {\n\t\t\t\t\t\tthis.setAttribute( \"class\", finalValue );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\n\t\treturn this;\n\t},\n\n\ttoggleClass: function( value, stateVal ) {\n\t\tvar classNames, className, i, self,\n\t\t\ttype = typeof value,\n\t\t\tisValidValue = type === \"string\" || Array.isArray( value );\n\n\t\tif ( isFunction( value ) ) {\n\t\t\treturn this.each( function( i ) {\n\t\t\t\tjQuery( this ).toggleClass(\n\t\t\t\t\tvalue.call( this, i, getClass( this ), stateVal ),\n\t\t\t\t\tstateVal\n\t\t\t\t);\n\t\t\t} );\n\t\t}\n\n\t\tif ( typeof stateVal === \"boolean\" && isValidValue ) {\n\t\t\treturn stateVal ? this.addClass( value ) : this.removeClass( value );\n\t\t}\n\n\t\tclassNames = classesToArray( value );\n\n\t\treturn this.each( function() {\n\t\t\tif ( isValidValue ) {\n\n\t\t\t\t// Toggle individual class names\n\t\t\t\tself = jQuery( this );\n\n\t\t\t\tfor ( i = 0; i < classNames.length; i++ ) {\n\t\t\t\t\tclassName = classNames[ i ];\n\n\t\t\t\t\t// Check each className given, space separated list\n\t\t\t\t\tif ( self.hasClass( className ) ) {\n\t\t\t\t\t\tself.removeClass( className );\n\t\t\t\t\t} else {\n\t\t\t\t\t\tself.addClass( className );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t// Toggle whole class name\n\t\t\t} else if ( value === undefined || type === \"boolean\" ) {\n\t\t\t\tclassName = getClass( this );\n\t\t\t\tif ( className ) {\n\n\t\t\t\t\t// Store className if set\n\t\t\t\t\tdataPriv.set( this, \"__className__\", className );\n\t\t\t\t}\n\n\t\t\t\t// If the element has a class name or if we're passed `false`,\n\t\t\t\t// then remove the whole classname (if there was one, the above saved it).\n\t\t\t\t// Otherwise bring back whatever was previously saved (if anything),\n\t\t\t\t// falling back to the empty string if nothing was stored.\n\t\t\t\tif ( this.setAttribute ) {\n\t\t\t\t\tthis.setAttribute( \"class\",\n\t\t\t\t\t\tclassName || value === false ?\n\t\t\t\t\t\t\t\"\" :\n\t\t\t\t\t\t\tdataPriv.get( this, \"__className__\" ) || \"\"\n\t\t\t\t\t);\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t},\n\n\thasClass: function( selector ) {\n\t\tvar className, elem,\n\t\t\ti = 0;\n\n\t\tclassName = \" \" + selector + \" \";\n\t\twhile ( ( elem = this[ i++ ] ) ) {\n\t\t\tif ( elem.nodeType === 1 &&\n\t\t\t\t( \" \" + stripAndCollapse( getClass( elem ) ) + \" \" ).indexOf( className ) > -1 ) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\n\t\treturn false;\n\t}\n} );\n\n\n\n\nvar rreturn = /\\r/g;\n\njQuery.fn.extend( {\n\tval: function( value ) {\n\t\tvar hooks, ret, valueIsFunction,\n\t\t\telem = this[ 0 ];\n\n\t\tif ( !arguments.length ) {\n\t\t\tif ( elem ) {\n\t\t\t\thooks = jQuery.valHooks[ elem.type ] ||\n\t\t\t\t\tjQuery.valHooks[ elem.nodeName.toLowerCase() ];\n\n\t\t\t\tif ( hooks &&\n\t\t\t\t\t\"get\" in hooks &&\n\t\t\t\t\t( ret = hooks.get( elem, \"value\" ) ) !== undefined\n\t\t\t\t) {\n\t\t\t\t\treturn ret;\n\t\t\t\t}\n\n\t\t\t\tret = elem.value;\n\n\t\t\t\t// Handle most common string cases\n\t\t\t\tif ( typeof ret === \"string\" ) {\n\t\t\t\t\treturn ret.replace( rreturn, \"\" );\n\t\t\t\t}\n\n\t\t\t\t// Handle cases where value is null/undef or number\n\t\t\t\treturn ret == null ? \"\" : ret;\n\t\t\t}\n\n\t\t\treturn;\n\t\t}\n\n\t\tvalueIsFunction = isFunction( value );\n\n\t\treturn this.each( function( i ) {\n\t\t\tvar val;\n\n\t\t\tif ( this.nodeType !== 1 ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif ( valueIsFunction ) {\n\t\t\t\tval = value.call( this, i, jQuery( this ).val() );\n\t\t\t} else {\n\t\t\t\tval = value;\n\t\t\t}\n\n\t\t\t// Treat null/undefined as \"\"; convert numbers to string\n\t\t\tif ( val == null ) {\n\t\t\t\tval = \"\";\n\n\t\t\t} else if ( typeof val === \"number\" ) {\n\t\t\t\tval += \"\";\n\n\t\t\t} else if ( Array.isArray( val ) ) {\n\t\t\t\tval = jQuery.map( val, function( value ) {\n\t\t\t\t\treturn value == null ? \"\" : value + \"\";\n\t\t\t\t} );\n\t\t\t}\n\n\t\t\thooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];\n\n\t\t\t// If set returns undefined, fall back to normal setting\n\t\t\tif ( !hooks || !( \"set\" in hooks ) || hooks.set( this, val, \"value\" ) === undefined ) {\n\t\t\t\tthis.value = val;\n\t\t\t}\n\t\t} );\n\t}\n} );\n\njQuery.extend( {\n\tvalHooks: {\n\t\toption: {\n\t\t\tget: function( elem ) {\n\n\t\t\t\tvar val = jQuery.find.attr( elem, \"value\" );\n\t\t\t\treturn val != null ?\n\t\t\t\t\tval :\n\n\t\t\t\t\t// Support: IE <=10 - 11 only\n\t\t\t\t\t// option.text throws exceptions (trac-14686, trac-14858)\n\t\t\t\t\t// Strip and collapse whitespace\n\t\t\t\t\t// https://html.spec.whatwg.org/#strip-and-collapse-whitespace\n\t\t\t\t\tstripAndCollapse( jQuery.text( elem ) );\n\t\t\t}\n\t\t},\n\t\tselect: {\n\t\t\tget: function( elem ) {\n\t\t\t\tvar value, option, i,\n\t\t\t\t\toptions = elem.options,\n\t\t\t\t\tindex = elem.selectedIndex,\n\t\t\t\t\tone = elem.type === \"select-one\",\n\t\t\t\t\tvalues = one ? null : [],\n\t\t\t\t\tmax = one ? index + 1 : options.length;\n\n\t\t\t\tif ( index < 0 ) {\n\t\t\t\t\ti = max;\n\n\t\t\t\t} else {\n\t\t\t\t\ti = one ? index : 0;\n\t\t\t\t}\n\n\t\t\t\t// Loop through all the selected options\n\t\t\t\tfor ( ; i < max; i++ ) {\n\t\t\t\t\toption = options[ i ];\n\n\t\t\t\t\t// Support: IE <=9 only\n\t\t\t\t\t// IE8-9 doesn't update selected after form reset (trac-2551)\n\t\t\t\t\tif ( ( option.selected || i === index ) &&\n\n\t\t\t\t\t\t\t// Don't return options that are disabled or in a disabled optgroup\n\t\t\t\t\t\t\t!option.disabled &&\n\t\t\t\t\t\t\t( !option.parentNode.disabled ||\n\t\t\t\t\t\t\t\t!nodeName( option.parentNode, \"optgroup\" ) ) ) {\n\n\t\t\t\t\t\t// Get the specific value for the option\n\t\t\t\t\t\tvalue = jQuery( option ).val();\n\n\t\t\t\t\t\t// We don't need an array for one selects\n\t\t\t\t\t\tif ( one ) {\n\t\t\t\t\t\t\treturn value;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// Multi-Selects return an array\n\t\t\t\t\t\tvalues.push( value );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\treturn values;\n\t\t\t},\n\n\t\t\tset: function( elem, value ) {\n\t\t\t\tvar optionSet, option,\n\t\t\t\t\toptions = elem.options,\n\t\t\t\t\tvalues = jQuery.makeArray( value ),\n\t\t\t\t\ti = options.length;\n\n\t\t\t\twhile ( i-- ) {\n\t\t\t\t\toption = options[ i ];\n\n\t\t\t\t\t/* eslint-disable no-cond-assign */\n\n\t\t\t\t\tif ( option.selected =\n\t\t\t\t\t\tjQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1\n\t\t\t\t\t) {\n\t\t\t\t\t\toptionSet = true;\n\t\t\t\t\t}\n\n\t\t\t\t\t/* eslint-enable no-cond-assign */\n\t\t\t\t}\n\n\t\t\t\t// Force browsers to behave consistently when non-matching value is set\n\t\t\t\tif ( !optionSet ) {\n\t\t\t\t\telem.selectedIndex = -1;\n\t\t\t\t}\n\t\t\t\treturn values;\n\t\t\t}\n\t\t}\n\t}\n} );\n\n// Radios and checkboxes getter/setter\njQuery.each( [ \"radio\", \"checkbox\" ], function() {\n\tjQuery.valHooks[ this ] = {\n\t\tset: function( elem, value ) {\n\t\t\tif ( Array.isArray( value ) ) {\n\t\t\t\treturn ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 );\n\t\t\t}\n\t\t}\n\t};\n\tif ( !support.checkOn ) {\n\t\tjQuery.valHooks[ this ].get = function( elem ) {\n\t\t\treturn elem.getAttribute( \"value\" ) === null ? \"on\" : elem.value;\n\t\t};\n\t}\n} );\n\n\n\n\n// Return jQuery for attributes-only inclusion\nvar location = window.location;\n\nvar nonce = { guid: Date.now() };\n\nvar rquery = ( /\\?/ );\n\n\n\n// Cross-browser xml parsing\njQuery.parseXML = function( data ) {\n\tvar xml, parserErrorElem;\n\tif ( !data || typeof data !== \"string\" ) {\n\t\treturn null;\n\t}\n\n\t// Support: IE 9 - 11 only\n\t// IE throws on parseFromString with invalid input.\n\ttry {\n\t\txml = ( new window.DOMParser() ).parseFromString( data, \"text/xml\" );\n\t} catch ( e ) {}\n\n\tparserErrorElem = xml && xml.getElementsByTagName( \"parsererror\" )[ 0 ];\n\tif ( !xml || parserErrorElem ) {\n\t\tjQuery.error( \"Invalid XML: \" + (\n\t\t\tparserErrorElem ?\n\t\t\t\tjQuery.map( parserErrorElem.childNodes, function( el ) {\n\t\t\t\t\treturn el.textContent;\n\t\t\t\t} ).join( \"\\n\" ) :\n\t\t\t\tdata\n\t\t) );\n\t}\n\treturn xml;\n};\n\n\nvar rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,\n\tstopPropagationCallback = function( e ) {\n\t\te.stopPropagation();\n\t};\n\njQuery.extend( jQuery.event, {\n\n\ttrigger: function( event, data, elem, onlyHandlers ) {\n\n\t\tvar i, cur, tmp, bubbleType, ontype, handle, special, lastElement,\n\t\t\teventPath = [ elem || document ],\n\t\t\ttype = hasOwn.call( event, \"type\" ) ? event.type : event,\n\t\t\tnamespaces = hasOwn.call( event, \"namespace\" ) ? event.namespace.split( \".\" ) : [];\n\n\t\tcur = lastElement = tmp = elem = elem || document;\n\n\t\t// Don't do events on text and comment nodes\n\t\tif ( elem.nodeType === 3 || elem.nodeType === 8 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// focus/blur morphs to focusin/out; ensure we're not firing them right now\n\t\tif ( rfocusMorph.test( type + jQuery.event.triggered ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( type.indexOf( \".\" ) > -1 ) {\n\n\t\t\t// Namespaced trigger; create a regexp to match event type in handle()\n\t\t\tnamespaces = type.split( \".\" );\n\t\t\ttype = namespaces.shift();\n\t\t\tnamespaces.sort();\n\t\t}\n\t\tontype = type.indexOf( \":\" ) < 0 && \"on\" + type;\n\n\t\t// Caller can pass in a jQuery.Event object, Object, or just an event type string\n\t\tevent = event[ jQuery.expando ] ?\n\t\t\tevent :\n\t\t\tnew jQuery.Event( type, typeof event === \"object\" && event );\n\n\t\t// Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)\n\t\tevent.isTrigger = onlyHandlers ? 2 : 3;\n\t\tevent.namespace = namespaces.join( \".\" );\n\t\tevent.rnamespace = event.namespace ?\n\t\t\tnew RegExp( \"(^|\\\\.)\" + namespaces.join( \"\\\\.(?:.*\\\\.|)\" ) + \"(\\\\.|$)\" ) :\n\t\t\tnull;\n\n\t\t// Clean up the event in case it is being reused\n\t\tevent.result = undefined;\n\t\tif ( !event.target ) {\n\t\t\tevent.target = elem;\n\t\t}\n\n\t\t// Clone any incoming data and prepend the event, creating the handler arg list\n\t\tdata = data == null ?\n\t\t\t[ event ] :\n\t\t\tjQuery.makeArray( data, [ event ] );\n\n\t\t// Allow special events to draw outside the lines\n\t\tspecial = jQuery.event.special[ type ] || {};\n\t\tif ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Determine event propagation path in advance, per W3C events spec (trac-9951)\n\t\t// Bubble up to document, then to window; watch for a global ownerDocument var (trac-9724)\n\t\tif ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) {\n\n\t\t\tbubbleType = special.delegateType || type;\n\t\t\tif ( !rfocusMorph.test( bubbleType + type ) ) {\n\t\t\t\tcur = cur.parentNode;\n\t\t\t}\n\t\t\tfor ( ; cur; cur = cur.parentNode ) {\n\t\t\t\teventPath.push( cur );\n\t\t\t\ttmp = cur;\n\t\t\t}\n\n\t\t\t// Only add window if we got to document (e.g., not plain obj or detached DOM)\n\t\t\tif ( tmp === ( elem.ownerDocument || document ) ) {\n\t\t\t\teventPath.push( tmp.defaultView || tmp.parentWindow || window );\n\t\t\t}\n\t\t}\n\n\t\t// Fire handlers on the event path\n\t\ti = 0;\n\t\twhile ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) {\n\t\t\tlastElement = cur;\n\t\t\tevent.type = i > 1 ?\n\t\t\t\tbubbleType :\n\t\t\t\tspecial.bindType || type;\n\n\t\t\t// jQuery handler\n\t\t\thandle = ( dataPriv.get( cur, \"events\" ) || Object.create( null ) )[ event.type ] &&\n\t\t\t\tdataPriv.get( cur, \"handle\" );\n\t\t\tif ( handle ) {\n\t\t\t\thandle.apply( cur, data );\n\t\t\t}\n\n\t\t\t// Native handler\n\t\t\thandle = ontype && cur[ ontype ];\n\t\t\tif ( handle && handle.apply && acceptData( cur ) ) {\n\t\t\t\tevent.result = handle.apply( cur, data );\n\t\t\t\tif ( event.result === false ) {\n\t\t\t\t\tevent.preventDefault();\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\tevent.type = type;\n\n\t\t// If nobody prevented the default action, do it now\n\t\tif ( !onlyHandlers && !event.isDefaultPrevented() ) {\n\n\t\t\tif ( ( !special._default ||\n\t\t\t\tspecial._default.apply( eventPath.pop(), data ) === false ) &&\n\t\t\t\tacceptData( elem ) ) {\n\n\t\t\t\t// Call a native DOM method on the target with the same name as the event.\n\t\t\t\t// Don't do default actions on window, that's where global variables be (trac-6170)\n\t\t\t\tif ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) {\n\n\t\t\t\t\t// Don't re-trigger an onFOO event when we call its FOO() method\n\t\t\t\t\ttmp = elem[ ontype ];\n\n\t\t\t\t\tif ( tmp ) {\n\t\t\t\t\t\telem[ ontype ] = null;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Prevent re-triggering of the same event, since we already bubbled it above\n\t\t\t\t\tjQuery.event.triggered = type;\n\n\t\t\t\t\tif ( event.isPropagationStopped() ) {\n\t\t\t\t\t\tlastElement.addEventListener( type, stopPropagationCallback );\n\t\t\t\t\t}\n\n\t\t\t\t\telem[ type ]();\n\n\t\t\t\t\tif ( event.isPropagationStopped() ) {\n\t\t\t\t\t\tlastElement.removeEventListener( type, stopPropagationCallback );\n\t\t\t\t\t}\n\n\t\t\t\t\tjQuery.event.triggered = undefined;\n\n\t\t\t\t\tif ( tmp ) {\n\t\t\t\t\t\telem[ ontype ] = tmp;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn event.result;\n\t},\n\n\t// Piggyback on a donor event to simulate a different one\n\t// Used only for `focus(in | out)` events\n\tsimulate: function( type, elem, event ) {\n\t\tvar e = jQuery.extend(\n\t\t\tnew jQuery.Event(),\n\t\t\tevent,\n\t\t\t{\n\t\t\t\ttype: type,\n\t\t\t\tisSimulated: true\n\t\t\t}\n\t\t);\n\n\t\tjQuery.event.trigger( e, null, elem );\n\t}\n\n} );\n\njQuery.fn.extend( {\n\n\ttrigger: function( type, data ) {\n\t\treturn this.each( function() {\n\t\t\tjQuery.event.trigger( type, data, this );\n\t\t} );\n\t},\n\ttriggerHandler: function( type, data ) {\n\t\tvar elem = this[ 0 ];\n\t\tif ( elem ) {\n\t\t\treturn jQuery.event.trigger( type, data, elem, true );\n\t\t}\n\t}\n} );\n\n\nvar\n\trbracket = /\\[\\]$/,\n\trCRLF = /\\r?\\n/g,\n\trsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,\n\trsubmittable = /^(?:input|select|textarea|keygen)/i;\n\nfunction buildParams( prefix, obj, traditional, add ) {\n\tvar name;\n\n\tif ( Array.isArray( obj ) ) {\n\n\t\t// Serialize array item.\n\t\tjQuery.each( obj, function( i, v ) {\n\t\t\tif ( traditional || rbracket.test( prefix ) ) {\n\n\t\t\t\t// Treat each array item as a scalar.\n\t\t\t\tadd( prefix, v );\n\n\t\t\t} else {\n\n\t\t\t\t// Item is non-scalar (array or object), encode its numeric index.\n\t\t\t\tbuildParams(\n\t\t\t\t\tprefix + \"[\" + ( typeof v === \"object\" && v != null ? i : \"\" ) + \"]\",\n\t\t\t\t\tv,\n\t\t\t\t\ttraditional,\n\t\t\t\t\tadd\n\t\t\t\t);\n\t\t\t}\n\t\t} );\n\n\t} else if ( !traditional && toType( obj ) === \"object\" ) {\n\n\t\t// Serialize object item.\n\t\tfor ( name in obj ) {\n\t\t\tbuildParams( prefix + \"[\" + name + \"]\", obj[ name ], traditional, add );\n\t\t}\n\n\t} else {\n\n\t\t// Serialize scalar item.\n\t\tadd( prefix, obj );\n\t}\n}\n\n// Serialize an array of form elements or a set of\n// key/values into a query string\njQuery.param = function( a, traditional ) {\n\tvar prefix,\n\t\ts = [],\n\t\tadd = function( key, valueOrFunction ) {\n\n\t\t\t// If value is a function, invoke it and use its return value\n\t\t\tvar value = isFunction( valueOrFunction ) ?\n\t\t\t\tvalueOrFunction() :\n\t\t\t\tvalueOrFunction;\n\n\t\t\ts[ s.length ] = encodeURIComponent( key ) + \"=\" +\n\t\t\t\tencodeURIComponent( value == null ? \"\" : value );\n\t\t};\n\n\tif ( a == null ) {\n\t\treturn \"\";\n\t}\n\n\t// If an array was passed in, assume that it is an array of form elements.\n\tif ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {\n\n\t\t// Serialize the form elements\n\t\tjQuery.each( a, function() {\n\t\t\tadd( this.name, this.value );\n\t\t} );\n\n\t} else {\n\n\t\t// If traditional, encode the \"old\" way (the way 1.3.2 or older\n\t\t// did it), otherwise encode params recursively.\n\t\tfor ( prefix in a ) {\n\t\t\tbuildParams( prefix, a[ prefix ], traditional, add );\n\t\t}\n\t}\n\n\t// Return the resulting serialization\n\treturn s.join( \"&\" );\n};\n\njQuery.fn.extend( {\n\tserialize: function() {\n\t\treturn jQuery.param( this.serializeArray() );\n\t},\n\tserializeArray: function() {\n\t\treturn this.map( function() {\n\n\t\t\t// Can add propHook for \"elements\" to filter or add form elements\n\t\t\tvar elements = jQuery.prop( this, \"elements\" );\n\t\t\treturn elements ? jQuery.makeArray( elements ) : this;\n\t\t} ).filter( function() {\n\t\t\tvar type = this.type;\n\n\t\t\t// Use .is( \":disabled\" ) so that fieldset[disabled] works\n\t\t\treturn this.name && !jQuery( this ).is( \":disabled\" ) &&\n\t\t\t\trsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&\n\t\t\t\t( this.checked || !rcheckableType.test( type ) );\n\t\t} ).map( function( _i, elem ) {\n\t\t\tvar val = jQuery( this ).val();\n\n\t\t\tif ( val == null ) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tif ( Array.isArray( val ) ) {\n\t\t\t\treturn jQuery.map( val, function( val ) {\n\t\t\t\t\treturn { name: elem.name, value: val.replace( rCRLF, \"\\r\\n\" ) };\n\t\t\t\t} );\n\t\t\t}\n\n\t\t\treturn { name: elem.name, value: val.replace( rCRLF, \"\\r\\n\" ) };\n\t\t} ).get();\n\t}\n} );\n\n\nvar\n\tr20 = /%20/g,\n\trhash = /#.*$/,\n\trantiCache = /([?&])_=[^&]*/,\n\trheaders = /^(.*?):[ \\t]*([^\\r\\n]*)$/mg,\n\n\t// trac-7653, trac-8125, trac-8152: local protocol detection\n\trlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,\n\trnoContent = /^(?:GET|HEAD)$/,\n\trprotocol = /^\\/\\//,\n\n\t/* Prefilters\n\t * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)\n\t * 2) These are called:\n\t *    - BEFORE asking for a transport\n\t *    - AFTER param serialization (s.data is a string if s.processData is true)\n\t * 3) key is the dataType\n\t * 4) the catchall symbol \"*\" can be used\n\t * 5) execution will start with transport dataType and THEN continue down to \"*\" if needed\n\t */\n\tprefilters = {},\n\n\t/* Transports bindings\n\t * 1) key is the dataType\n\t * 2) the catchall symbol \"*\" can be used\n\t * 3) selection will start with transport dataType and THEN go to \"*\" if needed\n\t */\n\ttransports = {},\n\n\t// Avoid comment-prolog char sequence (trac-10098); must appease lint and evade compression\n\tallTypes = \"*/\".concat( \"*\" ),\n\n\t// Anchor tag for parsing the document origin\n\toriginAnchor = document.createElement( \"a\" );\n\noriginAnchor.href = location.href;\n\n// Base \"constructor\" for jQuery.ajaxPrefilter and jQuery.ajaxTransport\nfunction addToPrefiltersOrTransports( structure ) {\n\n\t// dataTypeExpression is optional and defaults to \"*\"\n\treturn function( dataTypeExpression, func ) {\n\n\t\tif ( typeof dataTypeExpression !== \"string\" ) {\n\t\t\tfunc = dataTypeExpression;\n\t\t\tdataTypeExpression = \"*\";\n\t\t}\n\n\t\tvar dataType,\n\t\t\ti = 0,\n\t\t\tdataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || [];\n\n\t\tif ( isFunction( func ) ) {\n\n\t\t\t// For each dataType in the dataTypeExpression\n\t\t\twhile ( ( dataType = dataTypes[ i++ ] ) ) {\n\n\t\t\t\t// Prepend if requested\n\t\t\t\tif ( dataType[ 0 ] === \"+\" ) {\n\t\t\t\t\tdataType = dataType.slice( 1 ) || \"*\";\n\t\t\t\t\t( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func );\n\n\t\t\t\t// Otherwise append\n\t\t\t\t} else {\n\t\t\t\t\t( structure[ dataType ] = structure[ dataType ] || [] ).push( func );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t};\n}\n\n// Base inspection function for prefilters and transports\nfunction inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) {\n\n\tvar inspected = {},\n\t\tseekingTransport = ( structure === transports );\n\n\tfunction inspect( dataType ) {\n\t\tvar selected;\n\t\tinspected[ dataType ] = true;\n\t\tjQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {\n\t\t\tvar dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );\n\t\t\tif ( typeof dataTypeOrTransport === \"string\" &&\n\t\t\t\t!seekingTransport && !inspected[ dataTypeOrTransport ] ) {\n\n\t\t\t\toptions.dataTypes.unshift( dataTypeOrTransport );\n\t\t\t\tinspect( dataTypeOrTransport );\n\t\t\t\treturn false;\n\t\t\t} else if ( seekingTransport ) {\n\t\t\t\treturn !( selected = dataTypeOrTransport );\n\t\t\t}\n\t\t} );\n\t\treturn selected;\n\t}\n\n\treturn inspect( options.dataTypes[ 0 ] ) || !inspected[ \"*\" ] && inspect( \"*\" );\n}\n\n// A special extend for ajax options\n// that takes \"flat\" options (not to be deep extended)\n// Fixes trac-9887\nfunction ajaxExtend( target, src ) {\n\tvar key, deep,\n\t\tflatOptions = jQuery.ajaxSettings.flatOptions || {};\n\n\tfor ( key in src ) {\n\t\tif ( src[ key ] !== undefined ) {\n\t\t\t( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ];\n\t\t}\n\t}\n\tif ( deep ) {\n\t\tjQuery.extend( true, target, deep );\n\t}\n\n\treturn target;\n}\n\n/* Handles responses to an ajax request:\n * - finds the right dataType (mediates between content-type and expected dataType)\n * - returns the corresponding response\n */\nfunction ajaxHandleResponses( s, jqXHR, responses ) {\n\n\tvar ct, type, finalDataType, firstDataType,\n\t\tcontents = s.contents,\n\t\tdataTypes = s.dataTypes;\n\n\t// Remove auto dataType and get content-type in the process\n\twhile ( dataTypes[ 0 ] === \"*\" ) {\n\t\tdataTypes.shift();\n\t\tif ( ct === undefined ) {\n\t\t\tct = s.mimeType || jqXHR.getResponseHeader( \"Content-Type\" );\n\t\t}\n\t}\n\n\t// Check if we're dealing with a known content-type\n\tif ( ct ) {\n\t\tfor ( type in contents ) {\n\t\t\tif ( contents[ type ] && contents[ type ].test( ct ) ) {\n\t\t\t\tdataTypes.unshift( type );\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t}\n\n\t// Check to see if we have a response for the expected dataType\n\tif ( dataTypes[ 0 ] in responses ) {\n\t\tfinalDataType = dataTypes[ 0 ];\n\t} else {\n\n\t\t// Try convertible dataTypes\n\t\tfor ( type in responses ) {\n\t\t\tif ( !dataTypes[ 0 ] || s.converters[ type + \" \" + dataTypes[ 0 ] ] ) {\n\t\t\t\tfinalDataType = type;\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tif ( !firstDataType ) {\n\t\t\t\tfirstDataType = type;\n\t\t\t}\n\t\t}\n\n\t\t// Or just use first one\n\t\tfinalDataType = finalDataType || firstDataType;\n\t}\n\n\t// If we found a dataType\n\t// We add the dataType to the list if needed\n\t// and return the corresponding response\n\tif ( finalDataType ) {\n\t\tif ( finalDataType !== dataTypes[ 0 ] ) {\n\t\t\tdataTypes.unshift( finalDataType );\n\t\t}\n\t\treturn responses[ finalDataType ];\n\t}\n}\n\n/* Chain conversions given the request and the original response\n * Also sets the responseXXX fields on the jqXHR instance\n */\nfunction ajaxConvert( s, response, jqXHR, isSuccess ) {\n\tvar conv2, current, conv, tmp, prev,\n\t\tconverters = {},\n\n\t\t// Work with a copy of dataTypes in case we need to modify it for conversion\n\t\tdataTypes = s.dataTypes.slice();\n\n\t// Create converters map with lowercased keys\n\tif ( dataTypes[ 1 ] ) {\n\t\tfor ( conv in s.converters ) {\n\t\t\tconverters[ conv.toLowerCase() ] = s.converters[ conv ];\n\t\t}\n\t}\n\n\tcurrent = dataTypes.shift();\n\n\t// Convert to each sequential dataType\n\twhile ( current ) {\n\n\t\tif ( s.responseFields[ current ] ) {\n\t\t\tjqXHR[ s.responseFields[ current ] ] = response;\n\t\t}\n\n\t\t// Apply the dataFilter if provided\n\t\tif ( !prev && isSuccess && s.dataFilter ) {\n\t\t\tresponse = s.dataFilter( response, s.dataType );\n\t\t}\n\n\t\tprev = current;\n\t\tcurrent = dataTypes.shift();\n\n\t\tif ( current ) {\n\n\t\t\t// There's only work to do if current dataType is non-auto\n\t\t\tif ( current === \"*\" ) {\n\n\t\t\t\tcurrent = prev;\n\n\t\t\t// Convert response if prev dataType is non-auto and differs from current\n\t\t\t} else if ( prev !== \"*\" && prev !== current ) {\n\n\t\t\t\t// Seek a direct converter\n\t\t\t\tconv = converters[ prev + \" \" + current ] || converters[ \"* \" + current ];\n\n\t\t\t\t// If none found, seek a pair\n\t\t\t\tif ( !conv ) {\n\t\t\t\t\tfor ( conv2 in converters ) {\n\n\t\t\t\t\t\t// If conv2 outputs current\n\t\t\t\t\t\ttmp = conv2.split( \" \" );\n\t\t\t\t\t\tif ( tmp[ 1 ] === current ) {\n\n\t\t\t\t\t\t\t// If prev can be converted to accepted input\n\t\t\t\t\t\t\tconv = converters[ prev + \" \" + tmp[ 0 ] ] ||\n\t\t\t\t\t\t\t\tconverters[ \"* \" + tmp[ 0 ] ];\n\t\t\t\t\t\t\tif ( conv ) {\n\n\t\t\t\t\t\t\t\t// Condense equivalence converters\n\t\t\t\t\t\t\t\tif ( conv === true ) {\n\t\t\t\t\t\t\t\t\tconv = converters[ conv2 ];\n\n\t\t\t\t\t\t\t\t// Otherwise, insert the intermediate dataType\n\t\t\t\t\t\t\t\t} else if ( converters[ conv2 ] !== true ) {\n\t\t\t\t\t\t\t\t\tcurrent = tmp[ 0 ];\n\t\t\t\t\t\t\t\t\tdataTypes.unshift( tmp[ 1 ] );\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Apply converter (if not an equivalence)\n\t\t\t\tif ( conv !== true ) {\n\n\t\t\t\t\t// Unless errors are allowed to bubble, catch and return them\n\t\t\t\t\tif ( conv && s.throws ) {\n\t\t\t\t\t\tresponse = conv( response );\n\t\t\t\t\t} else {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tresponse = conv( response );\n\t\t\t\t\t\t} catch ( e ) {\n\t\t\t\t\t\t\treturn {\n\t\t\t\t\t\t\t\tstate: \"parsererror\",\n\t\t\t\t\t\t\t\terror: conv ? e : \"No conversion from \" + prev + \" to \" + current\n\t\t\t\t\t\t\t};\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn { state: \"success\", data: response };\n}\n\njQuery.extend( {\n\n\t// Counter for holding the number of active queries\n\tactive: 0,\n\n\t// Last-Modified header cache for next request\n\tlastModified: {},\n\tetag: {},\n\n\tajaxSettings: {\n\t\turl: location.href,\n\t\ttype: \"GET\",\n\t\tisLocal: rlocalProtocol.test( location.protocol ),\n\t\tglobal: true,\n\t\tprocessData: true,\n\t\tasync: true,\n\t\tcontentType: \"application/x-www-form-urlencoded; charset=UTF-8\",\n\n\t\t/*\n\t\ttimeout: 0,\n\t\tdata: null,\n\t\tdataType: null,\n\t\tusername: null,\n\t\tpassword: null,\n\t\tcache: null,\n\t\tthrows: false,\n\t\ttraditional: false,\n\t\theaders: {},\n\t\t*/\n\n\t\taccepts: {\n\t\t\t\"*\": allTypes,\n\t\t\ttext: \"text/plain\",\n\t\t\thtml: \"text/html\",\n\t\t\txml: \"application/xml, text/xml\",\n\t\t\tjson: \"application/json, text/javascript\"\n\t\t},\n\n\t\tcontents: {\n\t\t\txml: /\\bxml\\b/,\n\t\t\thtml: /\\bhtml/,\n\t\t\tjson: /\\bjson\\b/\n\t\t},\n\n\t\tresponseFields: {\n\t\t\txml: \"responseXML\",\n\t\t\ttext: \"responseText\",\n\t\t\tjson: \"responseJSON\"\n\t\t},\n\n\t\t// Data converters\n\t\t// Keys separate source (or catchall \"*\") and destination types with a single space\n\t\tconverters: {\n\n\t\t\t// Convert anything to text\n\t\t\t\"* text\": String,\n\n\t\t\t// Text to html (true = no transformation)\n\t\t\t\"text html\": true,\n\n\t\t\t// Evaluate text as a json expression\n\t\t\t\"text json\": JSON.parse,\n\n\t\t\t// Parse text as xml\n\t\t\t\"text xml\": jQuery.parseXML\n\t\t},\n\n\t\t// For options that shouldn't be deep extended:\n\t\t// you can add your own custom options here if\n\t\t// and when you create one that shouldn't be\n\t\t// deep extended (see ajaxExtend)\n\t\tflatOptions: {\n\t\t\turl: true,\n\t\t\tcontext: true\n\t\t}\n\t},\n\n\t// Creates a full fledged settings object into target\n\t// with both ajaxSettings and settings fields.\n\t// If target is omitted, writes into ajaxSettings.\n\tajaxSetup: function( target, settings ) {\n\t\treturn settings ?\n\n\t\t\t// Building a settings object\n\t\t\tajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) :\n\n\t\t\t// Extending ajaxSettings\n\t\t\tajaxExtend( jQuery.ajaxSettings, target );\n\t},\n\n\tajaxPrefilter: addToPrefiltersOrTransports( prefilters ),\n\tajaxTransport: addToPrefiltersOrTransports( transports ),\n\n\t// Main method\n\tajax: function( url, options ) {\n\n\t\t// If url is an object, simulate pre-1.5 signature\n\t\tif ( typeof url === \"object\" ) {\n\t\t\toptions = url;\n\t\t\turl = undefined;\n\t\t}\n\n\t\t// Force options to be an object\n\t\toptions = options || {};\n\n\t\tvar transport,\n\n\t\t\t// URL without anti-cache param\n\t\t\tcacheURL,\n\n\t\t\t// Response headers\n\t\t\tresponseHeadersString,\n\t\t\tresponseHeaders,\n\n\t\t\t// timeout handle\n\t\t\ttimeoutTimer,\n\n\t\t\t// Url cleanup var\n\t\t\turlAnchor,\n\n\t\t\t// Request state (becomes false upon send and true upon completion)\n\t\t\tcompleted,\n\n\t\t\t// To know if global events are to be dispatched\n\t\t\tfireGlobals,\n\n\t\t\t// Loop variable\n\t\t\ti,\n\n\t\t\t// uncached part of the url\n\t\t\tuncached,\n\n\t\t\t// Create the final options object\n\t\t\ts = jQuery.ajaxSetup( {}, options ),\n\n\t\t\t// Callbacks context\n\t\t\tcallbackContext = s.context || s,\n\n\t\t\t// Context for global events is callbackContext if it is a DOM node or jQuery collection\n\t\t\tglobalEventContext = s.context &&\n\t\t\t\t( callbackContext.nodeType || callbackContext.jquery ) ?\n\t\t\t\tjQuery( callbackContext ) :\n\t\t\t\tjQuery.event,\n\n\t\t\t// Deferreds\n\t\t\tdeferred = jQuery.Deferred(),\n\t\t\tcompleteDeferred = jQuery.Callbacks( \"once memory\" ),\n\n\t\t\t// Status-dependent callbacks\n\t\t\tstatusCode = s.statusCode || {},\n\n\t\t\t// Headers (they are sent all at once)\n\t\t\trequestHeaders = {},\n\t\t\trequestHeadersNames = {},\n\n\t\t\t// Default abort message\n\t\t\tstrAbort = \"canceled\",\n\n\t\t\t// Fake xhr\n\t\t\tjqXHR = {\n\t\t\t\treadyState: 0,\n\n\t\t\t\t// Builds headers hashtable if needed\n\t\t\t\tgetResponseHeader: function( key ) {\n\t\t\t\t\tvar match;\n\t\t\t\t\tif ( completed ) {\n\t\t\t\t\t\tif ( !responseHeaders ) {\n\t\t\t\t\t\t\tresponseHeaders = {};\n\t\t\t\t\t\t\twhile ( ( match = rheaders.exec( responseHeadersString ) ) ) {\n\t\t\t\t\t\t\t\tresponseHeaders[ match[ 1 ].toLowerCase() + \" \" ] =\n\t\t\t\t\t\t\t\t\t( responseHeaders[ match[ 1 ].toLowerCase() + \" \" ] || [] )\n\t\t\t\t\t\t\t\t\t\t.concat( match[ 2 ] );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t\tmatch = responseHeaders[ key.toLowerCase() + \" \" ];\n\t\t\t\t\t}\n\t\t\t\t\treturn match == null ? null : match.join( \", \" );\n\t\t\t\t},\n\n\t\t\t\t// Raw string\n\t\t\t\tgetAllResponseHeaders: function() {\n\t\t\t\t\treturn completed ? responseHeadersString : null;\n\t\t\t\t},\n\n\t\t\t\t// Caches the header\n\t\t\t\tsetRequestHeader: function( name, value ) {\n\t\t\t\t\tif ( completed == null ) {\n\t\t\t\t\t\tname = requestHeadersNames[ name.toLowerCase() ] =\n\t\t\t\t\t\t\trequestHeadersNames[ name.toLowerCase() ] || name;\n\t\t\t\t\t\trequestHeaders[ name ] = value;\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\n\t\t\t\t// Overrides response content-type header\n\t\t\t\toverrideMimeType: function( type ) {\n\t\t\t\t\tif ( completed == null ) {\n\t\t\t\t\t\ts.mimeType = type;\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\n\t\t\t\t// Status-dependent callbacks\n\t\t\t\tstatusCode: function( map ) {\n\t\t\t\t\tvar code;\n\t\t\t\t\tif ( map ) {\n\t\t\t\t\t\tif ( completed ) {\n\n\t\t\t\t\t\t\t// Execute the appropriate callbacks\n\t\t\t\t\t\t\tjqXHR.always( map[ jqXHR.status ] );\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Lazy-add the new callbacks in a way that preserves old ones\n\t\t\t\t\t\t\tfor ( code in map ) {\n\t\t\t\t\t\t\t\tstatusCode[ code ] = [ statusCode[ code ], map[ code ] ];\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\n\t\t\t\t// Cancel the request\n\t\t\t\tabort: function( statusText ) {\n\t\t\t\t\tvar finalText = statusText || strAbort;\n\t\t\t\t\tif ( transport ) {\n\t\t\t\t\t\ttransport.abort( finalText );\n\t\t\t\t\t}\n\t\t\t\t\tdone( 0, finalText );\n\t\t\t\t\treturn this;\n\t\t\t\t}\n\t\t\t};\n\n\t\t// Attach deferreds\n\t\tdeferred.promise( jqXHR );\n\n\t\t// Add protocol if not provided (prefilters might expect it)\n\t\t// Handle falsy url in the settings object (trac-10093: consistency with old signature)\n\t\t// We also use the url parameter if available\n\t\ts.url = ( ( url || s.url || location.href ) + \"\" )\n\t\t\t.replace( rprotocol, location.protocol + \"//\" );\n\n\t\t// Alias method option to type as per ticket trac-12004\n\t\ts.type = options.method || options.type || s.method || s.type;\n\n\t\t// Extract dataTypes list\n\t\ts.dataTypes = ( s.dataType || \"*\" ).toLowerCase().match( rnothtmlwhite ) || [ \"\" ];\n\n\t\t// A cross-domain request is in order when the origin doesn't match the current origin.\n\t\tif ( s.crossDomain == null ) {\n\t\t\turlAnchor = document.createElement( \"a\" );\n\n\t\t\t// Support: IE <=8 - 11, Edge 12 - 15\n\t\t\t// IE throws exception on accessing the href property if url is malformed,\n\t\t\t// e.g. http://example.com:80x/\n\t\t\ttry {\n\t\t\t\turlAnchor.href = s.url;\n\n\t\t\t\t// Support: IE <=8 - 11 only\n\t\t\t\t// Anchor's host property isn't correctly set when s.url is relative\n\t\t\t\turlAnchor.href = urlAnchor.href;\n\t\t\t\ts.crossDomain = originAnchor.protocol + \"//\" + originAnchor.host !==\n\t\t\t\t\turlAnchor.protocol + \"//\" + urlAnchor.host;\n\t\t\t} catch ( e ) {\n\n\t\t\t\t// If there is an error parsing the URL, assume it is crossDomain,\n\t\t\t\t// it can be rejected by the transport if it is invalid\n\t\t\t\ts.crossDomain = true;\n\t\t\t}\n\t\t}\n\n\t\t// Convert data if not already a string\n\t\tif ( s.data && s.processData && typeof s.data !== \"string\" ) {\n\t\t\ts.data = jQuery.param( s.data, s.traditional );\n\t\t}\n\n\t\t// Apply prefilters\n\t\tinspectPrefiltersOrTransports( prefilters, s, options, jqXHR );\n\n\t\t// If request was aborted inside a prefilter, stop there\n\t\tif ( completed ) {\n\t\t\treturn jqXHR;\n\t\t}\n\n\t\t// We can fire global events as of now if asked to\n\t\t// Don't fire events if jQuery.event is undefined in an AMD-usage scenario (trac-15118)\n\t\tfireGlobals = jQuery.event && s.global;\n\n\t\t// Watch for a new set of requests\n\t\tif ( fireGlobals && jQuery.active++ === 0 ) {\n\t\t\tjQuery.event.trigger( \"ajaxStart\" );\n\t\t}\n\n\t\t// Uppercase the type\n\t\ts.type = s.type.toUpperCase();\n\n\t\t// Determine if request has content\n\t\ts.hasContent = !rnoContent.test( s.type );\n\n\t\t// Save the URL in case we're toying with the If-Modified-Since\n\t\t// and/or If-None-Match header later on\n\t\t// Remove hash to simplify url manipulation\n\t\tcacheURL = s.url.replace( rhash, \"\" );\n\n\t\t// More options handling for requests with no content\n\t\tif ( !s.hasContent ) {\n\n\t\t\t// Remember the hash so we can put it back\n\t\t\tuncached = s.url.slice( cacheURL.length );\n\n\t\t\t// If data is available and should be processed, append data to url\n\t\t\tif ( s.data && ( s.processData || typeof s.data === \"string\" ) ) {\n\t\t\t\tcacheURL += ( rquery.test( cacheURL ) ? \"&\" : \"?\" ) + s.data;\n\n\t\t\t\t// trac-9682: remove data so that it's not used in an eventual retry\n\t\t\t\tdelete s.data;\n\t\t\t}\n\n\t\t\t// Add or update anti-cache param if needed\n\t\t\tif ( s.cache === false ) {\n\t\t\t\tcacheURL = cacheURL.replace( rantiCache, \"$1\" );\n\t\t\t\tuncached = ( rquery.test( cacheURL ) ? \"&\" : \"?\" ) + \"_=\" + ( nonce.guid++ ) +\n\t\t\t\t\tuncached;\n\t\t\t}\n\n\t\t\t// Put hash and anti-cache on the URL that will be requested (gh-1732)\n\t\t\ts.url = cacheURL + uncached;\n\n\t\t// Change '%20' to '+' if this is encoded form body content (gh-2658)\n\t\t} else if ( s.data && s.processData &&\n\t\t\t( s.contentType || \"\" ).indexOf( \"application/x-www-form-urlencoded\" ) === 0 ) {\n\t\t\ts.data = s.data.replace( r20, \"+\" );\n\t\t}\n\n\t\t// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.\n\t\tif ( s.ifModified ) {\n\t\t\tif ( jQuery.lastModified[ cacheURL ] ) {\n\t\t\t\tjqXHR.setRequestHeader( \"If-Modified-Since\", jQuery.lastModified[ cacheURL ] );\n\t\t\t}\n\t\t\tif ( jQuery.etag[ cacheURL ] ) {\n\t\t\t\tjqXHR.setRequestHeader( \"If-None-Match\", jQuery.etag[ cacheURL ] );\n\t\t\t}\n\t\t}\n\n\t\t// Set the correct header, if data is being sent\n\t\tif ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {\n\t\t\tjqXHR.setRequestHeader( \"Content-Type\", s.contentType );\n\t\t}\n\n\t\t// Set the Accepts header for the server, depending on the dataType\n\t\tjqXHR.setRequestHeader(\n\t\t\t\"Accept\",\n\t\t\ts.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ?\n\t\t\t\ts.accepts[ s.dataTypes[ 0 ] ] +\n\t\t\t\t\t( s.dataTypes[ 0 ] !== \"*\" ? \", \" + allTypes + \"; q=0.01\" : \"\" ) :\n\t\t\t\ts.accepts[ \"*\" ]\n\t\t);\n\n\t\t// Check for headers option\n\t\tfor ( i in s.headers ) {\n\t\t\tjqXHR.setRequestHeader( i, s.headers[ i ] );\n\t\t}\n\n\t\t// Allow custom headers/mimetypes and early abort\n\t\tif ( s.beforeSend &&\n\t\t\t( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) {\n\n\t\t\t// Abort if not done already and return\n\t\t\treturn jqXHR.abort();\n\t\t}\n\n\t\t// Aborting is no longer a cancellation\n\t\tstrAbort = \"abort\";\n\n\t\t// Install callbacks on deferreds\n\t\tcompleteDeferred.add( s.complete );\n\t\tjqXHR.done( s.success );\n\t\tjqXHR.fail( s.error );\n\n\t\t// Get transport\n\t\ttransport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );\n\n\t\t// If no transport, we auto-abort\n\t\tif ( !transport ) {\n\t\t\tdone( -1, \"No Transport\" );\n\t\t} else {\n\t\t\tjqXHR.readyState = 1;\n\n\t\t\t// Send global event\n\t\t\tif ( fireGlobals ) {\n\t\t\t\tglobalEventContext.trigger( \"ajaxSend\", [ jqXHR, s ] );\n\t\t\t}\n\n\t\t\t// If request was aborted inside ajaxSend, stop there\n\t\t\tif ( completed ) {\n\t\t\t\treturn jqXHR;\n\t\t\t}\n\n\t\t\t// Timeout\n\t\t\tif ( s.async && s.timeout > 0 ) {\n\t\t\t\ttimeoutTimer = window.setTimeout( function() {\n\t\t\t\t\tjqXHR.abort( \"timeout\" );\n\t\t\t\t}, s.timeout );\n\t\t\t}\n\n\t\t\ttry {\n\t\t\t\tcompleted = false;\n\t\t\t\ttransport.send( requestHeaders, done );\n\t\t\t} catch ( e ) {\n\n\t\t\t\t// Rethrow post-completion exceptions\n\t\t\t\tif ( completed ) {\n\t\t\t\t\tthrow e;\n\t\t\t\t}\n\n\t\t\t\t// Propagate others as results\n\t\t\t\tdone( -1, e );\n\t\t\t}\n\t\t}\n\n\t\t// Callback for when everything is done\n\t\tfunction done( status, nativeStatusText, responses, headers ) {\n\t\t\tvar isSuccess, success, error, response, modified,\n\t\t\t\tstatusText = nativeStatusText;\n\n\t\t\t// Ignore repeat invocations\n\t\t\tif ( completed ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tcompleted = true;\n\n\t\t\t// Clear timeout if it exists\n\t\t\tif ( timeoutTimer ) {\n\t\t\t\twindow.clearTimeout( timeoutTimer );\n\t\t\t}\n\n\t\t\t// Dereference transport for early garbage collection\n\t\t\t// (no matter how long the jqXHR object will be used)\n\t\t\ttransport = undefined;\n\n\t\t\t// Cache response headers\n\t\t\tresponseHeadersString = headers || \"\";\n\n\t\t\t// Set readyState\n\t\t\tjqXHR.readyState = status > 0 ? 4 : 0;\n\n\t\t\t// Determine if successful\n\t\t\tisSuccess = status >= 200 && status < 300 || status === 304;\n\n\t\t\t// Get response data\n\t\t\tif ( responses ) {\n\t\t\t\tresponse = ajaxHandleResponses( s, jqXHR, responses );\n\t\t\t}\n\n\t\t\t// Use a noop converter for missing script but not if jsonp\n\t\t\tif ( !isSuccess &&\n\t\t\t\tjQuery.inArray( \"script\", s.dataTypes ) > -1 &&\n\t\t\t\tjQuery.inArray( \"json\", s.dataTypes ) < 0 ) {\n\t\t\t\ts.converters[ \"text script\" ] = function() {};\n\t\t\t}\n\n\t\t\t// Convert no matter what (that way responseXXX fields are always set)\n\t\t\tresponse = ajaxConvert( s, response, jqXHR, isSuccess );\n\n\t\t\t// If successful, handle type chaining\n\t\t\tif ( isSuccess ) {\n\n\t\t\t\t// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.\n\t\t\t\tif ( s.ifModified ) {\n\t\t\t\t\tmodified = jqXHR.getResponseHeader( \"Last-Modified\" );\n\t\t\t\t\tif ( modified ) {\n\t\t\t\t\t\tjQuery.lastModified[ cacheURL ] = modified;\n\t\t\t\t\t}\n\t\t\t\t\tmodified = jqXHR.getResponseHeader( \"etag\" );\n\t\t\t\t\tif ( modified ) {\n\t\t\t\t\t\tjQuery.etag[ cacheURL ] = modified;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// if no content\n\t\t\t\tif ( status === 204 || s.type === \"HEAD\" ) {\n\t\t\t\t\tstatusText = \"nocontent\";\n\n\t\t\t\t// if not modified\n\t\t\t\t} else if ( status === 304 ) {\n\t\t\t\t\tstatusText = \"notmodified\";\n\n\t\t\t\t// If we have data, let's convert it\n\t\t\t\t} else {\n\t\t\t\t\tstatusText = response.state;\n\t\t\t\t\tsuccess = response.data;\n\t\t\t\t\terror = response.error;\n\t\t\t\t\tisSuccess = !error;\n\t\t\t\t}\n\t\t\t} else {\n\n\t\t\t\t// Extract error from statusText and normalize for non-aborts\n\t\t\t\terror = statusText;\n\t\t\t\tif ( status || !statusText ) {\n\t\t\t\t\tstatusText = \"error\";\n\t\t\t\t\tif ( status < 0 ) {\n\t\t\t\t\t\tstatus = 0;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Set data for the fake xhr object\n\t\t\tjqXHR.status = status;\n\t\t\tjqXHR.statusText = ( nativeStatusText || statusText ) + \"\";\n\n\t\t\t// Success/Error\n\t\t\tif ( isSuccess ) {\n\t\t\t\tdeferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );\n\t\t\t} else {\n\t\t\t\tdeferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );\n\t\t\t}\n\n\t\t\t// Status-dependent callbacks\n\t\t\tjqXHR.statusCode( statusCode );\n\t\t\tstatusCode = undefined;\n\n\t\t\tif ( fireGlobals ) {\n\t\t\t\tglobalEventContext.trigger( isSuccess ? \"ajaxSuccess\" : \"ajaxError\",\n\t\t\t\t\t[ jqXHR, s, isSuccess ? success : error ] );\n\t\t\t}\n\n\t\t\t// Complete\n\t\t\tcompleteDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );\n\n\t\t\tif ( fireGlobals ) {\n\t\t\t\tglobalEventContext.trigger( \"ajaxComplete\", [ jqXHR, s ] );\n\n\t\t\t\t// Handle the global AJAX counter\n\t\t\t\tif ( !( --jQuery.active ) ) {\n\t\t\t\t\tjQuery.event.trigger( \"ajaxStop\" );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn jqXHR;\n\t},\n\n\tgetJSON: function( url, data, callback ) {\n\t\treturn jQuery.get( url, data, callback, \"json\" );\n\t},\n\n\tgetScript: function( url, callback ) {\n\t\treturn jQuery.get( url, undefined, callback, \"script\" );\n\t}\n} );\n\njQuery.each( [ \"get\", \"post\" ], function( _i, method ) {\n\tjQuery[ method ] = function( url, data, callback, type ) {\n\n\t\t// Shift arguments if data argument was omitted\n\t\tif ( isFunction( data ) ) {\n\t\t\ttype = type || callback;\n\t\t\tcallback = data;\n\t\t\tdata = undefined;\n\t\t}\n\n\t\t// The url can be an options object (which then must have .url)\n\t\treturn jQuery.ajax( jQuery.extend( {\n\t\t\turl: url,\n\t\t\ttype: method,\n\t\t\tdataType: type,\n\t\t\tdata: data,\n\t\t\tsuccess: callback\n\t\t}, jQuery.isPlainObject( url ) && url ) );\n\t};\n} );\n\njQuery.ajaxPrefilter( function( s ) {\n\tvar i;\n\tfor ( i in s.headers ) {\n\t\tif ( i.toLowerCase() === \"content-type\" ) {\n\t\t\ts.contentType = s.headers[ i ] || \"\";\n\t\t}\n\t}\n} );\n\n\njQuery._evalUrl = function( url, options, doc ) {\n\treturn jQuery.ajax( {\n\t\turl: url,\n\n\t\t// Make this explicit, since user can override this through ajaxSetup (trac-11264)\n\t\ttype: \"GET\",\n\t\tdataType: \"script\",\n\t\tcache: true,\n\t\tasync: false,\n\t\tglobal: false,\n\n\t\t// Only evaluate the response if it is successful (gh-4126)\n\t\t// dataFilter is not invoked for failure responses, so using it instead\n\t\t// of the default converter is kludgy but it works.\n\t\tconverters: {\n\t\t\t\"text script\": function() {}\n\t\t},\n\t\tdataFilter: function( response ) {\n\t\t\tjQuery.globalEval( response, options, doc );\n\t\t}\n\t} );\n};\n\n\njQuery.fn.extend( {\n\twrapAll: function( html ) {\n\t\tvar wrap;\n\n\t\tif ( this[ 0 ] ) {\n\t\t\tif ( isFunction( html ) ) {\n\t\t\t\thtml = html.call( this[ 0 ] );\n\t\t\t}\n\n\t\t\t// The elements to wrap the target around\n\t\t\twrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true );\n\n\t\t\tif ( this[ 0 ].parentNode ) {\n\t\t\t\twrap.insertBefore( this[ 0 ] );\n\t\t\t}\n\n\t\t\twrap.map( function() {\n\t\t\t\tvar elem = this;\n\n\t\t\t\twhile ( elem.firstElementChild ) {\n\t\t\t\t\telem = elem.firstElementChild;\n\t\t\t\t}\n\n\t\t\t\treturn elem;\n\t\t\t} ).append( this );\n\t\t}\n\n\t\treturn this;\n\t},\n\n\twrapInner: function( html ) {\n\t\tif ( isFunction( html ) ) {\n\t\t\treturn this.each( function( i ) {\n\t\t\t\tjQuery( this ).wrapInner( html.call( this, i ) );\n\t\t\t} );\n\t\t}\n\n\t\treturn this.each( function() {\n\t\t\tvar self = jQuery( this ),\n\t\t\t\tcontents = self.contents();\n\n\t\t\tif ( contents.length ) {\n\t\t\t\tcontents.wrapAll( html );\n\n\t\t\t} else {\n\t\t\t\tself.append( html );\n\t\t\t}\n\t\t} );\n\t},\n\n\twrap: function( html ) {\n\t\tvar htmlIsFunction = isFunction( html );\n\n\t\treturn this.each( function( i ) {\n\t\t\tjQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html );\n\t\t} );\n\t},\n\n\tunwrap: function( selector ) {\n\t\tthis.parent( selector ).not( \"body\" ).each( function() {\n\t\t\tjQuery( this ).replaceWith( this.childNodes );\n\t\t} );\n\t\treturn this;\n\t}\n} );\n\n\njQuery.expr.pseudos.hidden = function( elem ) {\n\treturn !jQuery.expr.pseudos.visible( elem );\n};\njQuery.expr.pseudos.visible = function( elem ) {\n\treturn !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length );\n};\n\n\n\n\njQuery.ajaxSettings.xhr = function() {\n\ttry {\n\t\treturn new window.XMLHttpRequest();\n\t} catch ( e ) {}\n};\n\nvar xhrSuccessStatus = {\n\n\t\t// File protocol always yields status code 0, assume 200\n\t\t0: 200,\n\n\t\t// Support: IE <=9 only\n\t\t// trac-1450: sometimes IE returns 1223 when it should be 204\n\t\t1223: 204\n\t},\n\txhrSupported = jQuery.ajaxSettings.xhr();\n\nsupport.cors = !!xhrSupported && ( \"withCredentials\" in xhrSupported );\nsupport.ajax = xhrSupported = !!xhrSupported;\n\njQuery.ajaxTransport( function( options ) {\n\tvar callback, errorCallback;\n\n\t// Cross domain only allowed if supported through XMLHttpRequest\n\tif ( support.cors || xhrSupported && !options.crossDomain ) {\n\t\treturn {\n\t\t\tsend: function( headers, complete ) {\n\t\t\t\tvar i,\n\t\t\t\t\txhr = options.xhr();\n\n\t\t\t\txhr.open(\n\t\t\t\t\toptions.type,\n\t\t\t\t\toptions.url,\n\t\t\t\t\toptions.async,\n\t\t\t\t\toptions.username,\n\t\t\t\t\toptions.password\n\t\t\t\t);\n\n\t\t\t\t// Apply custom fields if provided\n\t\t\t\tif ( options.xhrFields ) {\n\t\t\t\t\tfor ( i in options.xhrFields ) {\n\t\t\t\t\t\txhr[ i ] = options.xhrFields[ i ];\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Override mime type if needed\n\t\t\t\tif ( options.mimeType && xhr.overrideMimeType ) {\n\t\t\t\t\txhr.overrideMimeType( options.mimeType );\n\t\t\t\t}\n\n\t\t\t\t// X-Requested-With header\n\t\t\t\t// For cross-domain requests, seeing as conditions for a preflight are\n\t\t\t\t// akin to a jigsaw puzzle, we simply never set it to be sure.\n\t\t\t\t// (it can always be set on a per-request basis or even using ajaxSetup)\n\t\t\t\t// For same-domain requests, won't change header if already provided.\n\t\t\t\tif ( !options.crossDomain && !headers[ \"X-Requested-With\" ] ) {\n\t\t\t\t\theaders[ \"X-Requested-With\" ] = \"XMLHttpRequest\";\n\t\t\t\t}\n\n\t\t\t\t// Set headers\n\t\t\t\tfor ( i in headers ) {\n\t\t\t\t\txhr.setRequestHeader( i, headers[ i ] );\n\t\t\t\t}\n\n\t\t\t\t// Callback\n\t\t\t\tcallback = function( type ) {\n\t\t\t\t\treturn function() {\n\t\t\t\t\t\tif ( callback ) {\n\t\t\t\t\t\t\tcallback = errorCallback = xhr.onload =\n\t\t\t\t\t\t\t\txhr.onerror = xhr.onabort = xhr.ontimeout =\n\t\t\t\t\t\t\t\t\txhr.onreadystatechange = null;\n\n\t\t\t\t\t\t\tif ( type === \"abort\" ) {\n\t\t\t\t\t\t\t\txhr.abort();\n\t\t\t\t\t\t\t} else if ( type === \"error\" ) {\n\n\t\t\t\t\t\t\t\t// Support: IE <=9 only\n\t\t\t\t\t\t\t\t// On a manual native abort, IE9 throws\n\t\t\t\t\t\t\t\t// errors on any property access that is not readyState\n\t\t\t\t\t\t\t\tif ( typeof xhr.status !== \"number\" ) {\n\t\t\t\t\t\t\t\t\tcomplete( 0, \"error\" );\n\t\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\t\tcomplete(\n\n\t\t\t\t\t\t\t\t\t\t// File: protocol always yields status 0; see trac-8605, trac-14207\n\t\t\t\t\t\t\t\t\t\txhr.status,\n\t\t\t\t\t\t\t\t\t\txhr.statusText\n\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\tcomplete(\n\t\t\t\t\t\t\t\t\txhrSuccessStatus[ xhr.status ] || xhr.status,\n\t\t\t\t\t\t\t\t\txhr.statusText,\n\n\t\t\t\t\t\t\t\t\t// Support: IE <=9 only\n\t\t\t\t\t\t\t\t\t// IE9 has no XHR2 but throws on binary (trac-11426)\n\t\t\t\t\t\t\t\t\t// For XHR2 non-text, let the caller handle it (gh-2498)\n\t\t\t\t\t\t\t\t\t( xhr.responseType || \"text\" ) !== \"text\"  ||\n\t\t\t\t\t\t\t\t\ttypeof xhr.responseText !== \"string\" ?\n\t\t\t\t\t\t\t\t\t\t{ binary: xhr.response } :\n\t\t\t\t\t\t\t\t\t\t{ text: xhr.responseText },\n\t\t\t\t\t\t\t\t\txhr.getAllResponseHeaders()\n\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t};\n\t\t\t\t};\n\n\t\t\t\t// Listen to events\n\t\t\t\txhr.onload = callback();\n\t\t\t\terrorCallback = xhr.onerror = xhr.ontimeout = callback( \"error\" );\n\n\t\t\t\t// Support: IE 9 only\n\t\t\t\t// Use onreadystatechange to replace onabort\n\t\t\t\t// to handle uncaught aborts\n\t\t\t\tif ( xhr.onabort !== undefined ) {\n\t\t\t\t\txhr.onabort = errorCallback;\n\t\t\t\t} else {\n\t\t\t\t\txhr.onreadystatechange = function() {\n\n\t\t\t\t\t\t// Check readyState before timeout as it changes\n\t\t\t\t\t\tif ( xhr.readyState === 4 ) {\n\n\t\t\t\t\t\t\t// Allow onerror to be called first,\n\t\t\t\t\t\t\t// but that will not handle a native abort\n\t\t\t\t\t\t\t// Also, save errorCallback to a variable\n\t\t\t\t\t\t\t// as xhr.onerror cannot be accessed\n\t\t\t\t\t\t\twindow.setTimeout( function() {\n\t\t\t\t\t\t\t\tif ( callback ) {\n\t\t\t\t\t\t\t\t\terrorCallback();\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} );\n\t\t\t\t\t\t}\n\t\t\t\t\t};\n\t\t\t\t}\n\n\t\t\t\t// Create the abort callback\n\t\t\t\tcallback = callback( \"abort\" );\n\n\t\t\t\ttry {\n\n\t\t\t\t\t// Do send the request (this may raise an exception)\n\t\t\t\t\txhr.send( options.hasContent && options.data || null );\n\t\t\t\t} catch ( e ) {\n\n\t\t\t\t\t// trac-14683: Only rethrow if this hasn't been notified as an error yet\n\t\t\t\t\tif ( callback ) {\n\t\t\t\t\t\tthrow e;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t},\n\n\t\t\tabort: function() {\n\t\t\t\tif ( callback ) {\n\t\t\t\t\tcallback();\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\t}\n} );\n\n\n\n\n// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432)\njQuery.ajaxPrefilter( function( s ) {\n\tif ( s.crossDomain ) {\n\t\ts.contents.script = false;\n\t}\n} );\n\n// Install script dataType\njQuery.ajaxSetup( {\n\taccepts: {\n\t\tscript: \"text/javascript, application/javascript, \" +\n\t\t\t\"application/ecmascript, application/x-ecmascript\"\n\t},\n\tcontents: {\n\t\tscript: /\\b(?:java|ecma)script\\b/\n\t},\n\tconverters: {\n\t\t\"text script\": function( text ) {\n\t\t\tjQuery.globalEval( text );\n\t\t\treturn text;\n\t\t}\n\t}\n} );\n\n// Handle cache's special case and crossDomain\njQuery.ajaxPrefilter( \"script\", function( s ) {\n\tif ( s.cache === undefined ) {\n\t\ts.cache = false;\n\t}\n\tif ( s.crossDomain ) {\n\t\ts.type = \"GET\";\n\t}\n} );\n\n// Bind script tag hack transport\njQuery.ajaxTransport( \"script\", function( s ) {\n\n\t// This transport only deals with cross domain or forced-by-attrs requests\n\tif ( s.crossDomain || s.scriptAttrs ) {\n\t\tvar script, callback;\n\t\treturn {\n\t\t\tsend: function( _, complete ) {\n\t\t\t\tscript = jQuery( \"<script>\" )\n\t\t\t\t\t.attr( s.scriptAttrs || {} )\n\t\t\t\t\t.prop( { charset: s.scriptCharset, src: s.url } )\n\t\t\t\t\t.on( \"load error\", callback = function( evt ) {\n\t\t\t\t\t\tscript.remove();\n\t\t\t\t\t\tcallback = null;\n\t\t\t\t\t\tif ( evt ) {\n\t\t\t\t\t\t\tcomplete( evt.type === \"error\" ? 404 : 200, evt.type );\n\t\t\t\t\t\t}\n\t\t\t\t\t} );\n\n\t\t\t\t// Use native DOM manipulation to avoid our domManip AJAX trickery\n\t\t\t\tdocument.head.appendChild( script[ 0 ] );\n\t\t\t},\n\t\t\tabort: function() {\n\t\t\t\tif ( callback ) {\n\t\t\t\t\tcallback();\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\t}\n} );\n\n\n\n\nvar oldCallbacks = [],\n\trjsonp = /(=)\\?(?=&|$)|\\?\\?/;\n\n// Default jsonp settings\njQuery.ajaxSetup( {\n\tjsonp: \"callback\",\n\tjsonpCallback: function() {\n\t\tvar callback = oldCallbacks.pop() || ( jQuery.expando + \"_\" + ( nonce.guid++ ) );\n\t\tthis[ callback ] = true;\n\t\treturn callback;\n\t}\n} );\n\n// Detect, normalize options and install callbacks for jsonp requests\njQuery.ajaxPrefilter( \"json jsonp\", function( s, originalSettings, jqXHR ) {\n\n\tvar callbackName, overwritten, responseContainer,\n\t\tjsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ?\n\t\t\t\"url\" :\n\t\t\ttypeof s.data === \"string\" &&\n\t\t\t\t( s.contentType || \"\" )\n\t\t\t\t\t.indexOf( \"application/x-www-form-urlencoded\" ) === 0 &&\n\t\t\t\trjsonp.test( s.data ) && \"data\"\n\t\t);\n\n\t// Handle iff the expected data type is \"jsonp\" or we have a parameter to set\n\tif ( jsonProp || s.dataTypes[ 0 ] === \"jsonp\" ) {\n\n\t\t// Get callback name, remembering preexisting value associated with it\n\t\tcallbackName = s.jsonpCallback = isFunction( s.jsonpCallback ) ?\n\t\t\ts.jsonpCallback() :\n\t\t\ts.jsonpCallback;\n\n\t\t// Insert callback into url or form data\n\t\tif ( jsonProp ) {\n\t\t\ts[ jsonProp ] = s[ jsonProp ].replace( rjsonp, \"$1\" + callbackName );\n\t\t} else if ( s.jsonp !== false ) {\n\t\t\ts.url += ( rquery.test( s.url ) ? \"&\" : \"?\" ) + s.jsonp + \"=\" + callbackName;\n\t\t}\n\n\t\t// Use data converter to retrieve json after script execution\n\t\ts.converters[ \"script json\" ] = function() {\n\t\t\tif ( !responseContainer ) {\n\t\t\t\tjQuery.error( callbackName + \" was not called\" );\n\t\t\t}\n\t\t\treturn responseContainer[ 0 ];\n\t\t};\n\n\t\t// Force json dataType\n\t\ts.dataTypes[ 0 ] = \"json\";\n\n\t\t// Install callback\n\t\toverwritten = window[ callbackName ];\n\t\twindow[ callbackName ] = function() {\n\t\t\tresponseContainer = arguments;\n\t\t};\n\n\t\t// Clean-up function (fires after converters)\n\t\tjqXHR.always( function() {\n\n\t\t\t// If previous value didn't exist - remove it\n\t\t\tif ( overwritten === undefined ) {\n\t\t\t\tjQuery( window ).removeProp( callbackName );\n\n\t\t\t// Otherwise restore preexisting value\n\t\t\t} else {\n\t\t\t\twindow[ callbackName ] = overwritten;\n\t\t\t}\n\n\t\t\t// Save back as free\n\t\t\tif ( s[ callbackName ] ) {\n\n\t\t\t\t// Make sure that re-using the options doesn't screw things around\n\t\t\t\ts.jsonpCallback = originalSettings.jsonpCallback;\n\n\t\t\t\t// Save the callback name for future use\n\t\t\t\toldCallbacks.push( callbackName );\n\t\t\t}\n\n\t\t\t// Call if it was a function and we have a response\n\t\t\tif ( responseContainer && isFunction( overwritten ) ) {\n\t\t\t\toverwritten( responseContainer[ 0 ] );\n\t\t\t}\n\n\t\t\tresponseContainer = overwritten = undefined;\n\t\t} );\n\n\t\t// Delegate to script\n\t\treturn \"script\";\n\t}\n} );\n\n\n\n\n// Support: Safari 8 only\n// In Safari 8 documents created via document.implementation.createHTMLDocument\n// collapse sibling forms: the second one becomes a child of the first one.\n// Because of that, this security measure has to be disabled in Safari 8.\n// https://bugs.webkit.org/show_bug.cgi?id=137337\nsupport.createHTMLDocument = ( function() {\n\tvar body = document.implementation.createHTMLDocument( \"\" ).body;\n\tbody.innerHTML = \"<form></form><form></form>\";\n\treturn body.childNodes.length === 2;\n} )();\n\n\n// Argument \"data\" should be string of html\n// context (optional): If specified, the fragment will be created in this context,\n// defaults to document\n// keepScripts (optional): If true, will include scripts passed in the html string\njQuery.parseHTML = function( data, context, keepScripts ) {\n\tif ( typeof data !== \"string\" ) {\n\t\treturn [];\n\t}\n\tif ( typeof context === \"boolean\" ) {\n\t\tkeepScripts = context;\n\t\tcontext = false;\n\t}\n\n\tvar base, parsed, scripts;\n\n\tif ( !context ) {\n\n\t\t// Stop scripts or inline event handlers from being executed immediately\n\t\t// by using document.implementation\n\t\tif ( support.createHTMLDocument ) {\n\t\t\tcontext = document.implementation.createHTMLDocument( \"\" );\n\n\t\t\t// Set the base href for the created document\n\t\t\t// so any parsed elements with URLs\n\t\t\t// are based on the document's URL (gh-2965)\n\t\t\tbase = context.createElement( \"base\" );\n\t\t\tbase.href = document.location.href;\n\t\t\tcontext.head.appendChild( base );\n\t\t} else {\n\t\t\tcontext = document;\n\t\t}\n\t}\n\n\tparsed = rsingleTag.exec( data );\n\tscripts = !keepScripts && [];\n\n\t// Single tag\n\tif ( parsed ) {\n\t\treturn [ context.createElement( parsed[ 1 ] ) ];\n\t}\n\n\tparsed = buildFragment( [ data ], context, scripts );\n\n\tif ( scripts && scripts.length ) {\n\t\tjQuery( scripts ).remove();\n\t}\n\n\treturn jQuery.merge( [], parsed.childNodes );\n};\n\n\n/**\n * Load a url into a page\n */\njQuery.fn.load = function( url, params, callback ) {\n\tvar selector, type, response,\n\t\tself = this,\n\t\toff = url.indexOf( \" \" );\n\n\tif ( off > -1 ) {\n\t\tselector = stripAndCollapse( url.slice( off ) );\n\t\turl = url.slice( 0, off );\n\t}\n\n\t// If it's a function\n\tif ( isFunction( params ) ) {\n\n\t\t// We assume that it's the callback\n\t\tcallback = params;\n\t\tparams = undefined;\n\n\t// Otherwise, build a param string\n\t} else if ( params && typeof params === \"object\" ) {\n\t\ttype = \"POST\";\n\t}\n\n\t// If we have elements to modify, make the request\n\tif ( self.length > 0 ) {\n\t\tjQuery.ajax( {\n\t\t\turl: url,\n\n\t\t\t// If \"type\" variable is undefined, then \"GET\" method will be used.\n\t\t\t// Make value of this field explicit since\n\t\t\t// user can override it through ajaxSetup method\n\t\t\ttype: type || \"GET\",\n\t\t\tdataType: \"html\",\n\t\t\tdata: params\n\t\t} ).done( function( responseText ) {\n\n\t\t\t// Save response for use in complete callback\n\t\t\tresponse = arguments;\n\n\t\t\tself.html( selector ?\n\n\t\t\t\t// If a selector was specified, locate the right elements in a dummy div\n\t\t\t\t// Exclude scripts to avoid IE 'Permission Denied' errors\n\t\t\t\tjQuery( \"<div>\" ).append( jQuery.parseHTML( responseText ) ).find( selector ) :\n\n\t\t\t\t// Otherwise use the full result\n\t\t\t\tresponseText );\n\n\t\t// If the request succeeds, this function gets \"data\", \"status\", \"jqXHR\"\n\t\t// but they are ignored because response was set above.\n\t\t// If it fails, this function gets \"jqXHR\", \"status\", \"error\"\n\t\t} ).always( callback && function( jqXHR, status ) {\n\t\t\tself.each( function() {\n\t\t\t\tcallback.apply( this, response || [ jqXHR.responseText, status, jqXHR ] );\n\t\t\t} );\n\t\t} );\n\t}\n\n\treturn this;\n};\n\n\n\n\njQuery.expr.pseudos.animated = function( elem ) {\n\treturn jQuery.grep( jQuery.timers, function( fn ) {\n\t\treturn elem === fn.elem;\n\t} ).length;\n};\n\n\n\n\njQuery.offset = {\n\tsetOffset: function( elem, options, i ) {\n\t\tvar curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,\n\t\t\tposition = jQuery.css( elem, \"position\" ),\n\t\t\tcurElem = jQuery( elem ),\n\t\t\tprops = {};\n\n\t\t// Set position first, in-case top/left are set even on static elem\n\t\tif ( position === \"static\" ) {\n\t\t\telem.style.position = \"relative\";\n\t\t}\n\n\t\tcurOffset = curElem.offset();\n\t\tcurCSSTop = jQuery.css( elem, \"top\" );\n\t\tcurCSSLeft = jQuery.css( elem, \"left\" );\n\t\tcalculatePosition = ( position === \"absolute\" || position === \"fixed\" ) &&\n\t\t\t( curCSSTop + curCSSLeft ).indexOf( \"auto\" ) > -1;\n\n\t\t// Need to be able to calculate position if either\n\t\t// top or left is auto and position is either absolute or fixed\n\t\tif ( calculatePosition ) {\n\t\t\tcurPosition = curElem.position();\n\t\t\tcurTop = curPosition.top;\n\t\t\tcurLeft = curPosition.left;\n\n\t\t} else {\n\t\t\tcurTop = parseFloat( curCSSTop ) || 0;\n\t\t\tcurLeft = parseFloat( curCSSLeft ) || 0;\n\t\t}\n\n\t\tif ( isFunction( options ) ) {\n\n\t\t\t// Use jQuery.extend here to allow modification of coordinates argument (gh-1848)\n\t\t\toptions = options.call( elem, i, jQuery.extend( {}, curOffset ) );\n\t\t}\n\n\t\tif ( options.top != null ) {\n\t\t\tprops.top = ( options.top - curOffset.top ) + curTop;\n\t\t}\n\t\tif ( options.left != null ) {\n\t\t\tprops.left = ( options.left - curOffset.left ) + curLeft;\n\t\t}\n\n\t\tif ( \"using\" in options ) {\n\t\t\toptions.using.call( elem, props );\n\n\t\t} else {\n\t\t\tcurElem.css( props );\n\t\t}\n\t}\n};\n\njQuery.fn.extend( {\n\n\t// offset() relates an element's border box to the document origin\n\toffset: function( options ) {\n\n\t\t// Preserve chaining for setter\n\t\tif ( arguments.length ) {\n\t\t\treturn options === undefined ?\n\t\t\t\tthis :\n\t\t\t\tthis.each( function( i ) {\n\t\t\t\t\tjQuery.offset.setOffset( this, options, i );\n\t\t\t\t} );\n\t\t}\n\n\t\tvar rect, win,\n\t\t\telem = this[ 0 ];\n\n\t\tif ( !elem ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Return zeros for disconnected and hidden (display: none) elements (gh-2310)\n\t\t// Support: IE <=11 only\n\t\t// Running getBoundingClientRect on a\n\t\t// disconnected node in IE throws an error\n\t\tif ( !elem.getClientRects().length ) {\n\t\t\treturn { top: 0, left: 0 };\n\t\t}\n\n\t\t// Get document-relative position by adding viewport scroll to viewport-relative gBCR\n\t\trect = elem.getBoundingClientRect();\n\t\twin = elem.ownerDocument.defaultView;\n\t\treturn {\n\t\t\ttop: rect.top + win.pageYOffset,\n\t\t\tleft: rect.left + win.pageXOffset\n\t\t};\n\t},\n\n\t// position() relates an element's margin box to its offset parent's padding box\n\t// This corresponds to the behavior of CSS absolute positioning\n\tposition: function() {\n\t\tif ( !this[ 0 ] ) {\n\t\t\treturn;\n\t\t}\n\n\t\tvar offsetParent, offset, doc,\n\t\t\telem = this[ 0 ],\n\t\t\tparentOffset = { top: 0, left: 0 };\n\n\t\t// position:fixed elements are offset from the viewport, which itself always has zero offset\n\t\tif ( jQuery.css( elem, \"position\" ) === \"fixed\" ) {\n\n\t\t\t// Assume position:fixed implies availability of getBoundingClientRect\n\t\t\toffset = elem.getBoundingClientRect();\n\n\t\t} else {\n\t\t\toffset = this.offset();\n\n\t\t\t// Account for the *real* offset parent, which can be the document or its root element\n\t\t\t// when a statically positioned element is identified\n\t\t\tdoc = elem.ownerDocument;\n\t\t\toffsetParent = elem.offsetParent || doc.documentElement;\n\t\t\twhile ( offsetParent &&\n\t\t\t\t( offsetParent === doc.body || offsetParent === doc.documentElement ) &&\n\t\t\t\tjQuery.css( offsetParent, \"position\" ) === \"static\" ) {\n\n\t\t\t\toffsetParent = offsetParent.parentNode;\n\t\t\t}\n\t\t\tif ( offsetParent && offsetParent !== elem && offsetParent.nodeType === 1 ) {\n\n\t\t\t\t// Incorporate borders into its offset, since they are outside its content origin\n\t\t\t\tparentOffset = jQuery( offsetParent ).offset();\n\t\t\t\tparentOffset.top += jQuery.css( offsetParent, \"borderTopWidth\", true );\n\t\t\t\tparentOffset.left += jQuery.css( offsetParent, \"borderLeftWidth\", true );\n\t\t\t}\n\t\t}\n\n\t\t// Subtract parent offsets and element margins\n\t\treturn {\n\t\t\ttop: offset.top - parentOffset.top - jQuery.css( elem, \"marginTop\", true ),\n\t\t\tleft: offset.left - parentOffset.left - jQuery.css( elem, \"marginLeft\", true )\n\t\t};\n\t},\n\n\t// This method will return documentElement in the following cases:\n\t// 1) For the element inside the iframe without offsetParent, this method will return\n\t//    documentElement of the parent window\n\t// 2) For the hidden or detached element\n\t// 3) For body or html element, i.e. in case of the html node - it will return itself\n\t//\n\t// but those exceptions were never presented as a real life use-cases\n\t// and might be considered as more preferable results.\n\t//\n\t// This logic, however, is not guaranteed and can change at any point in the future\n\toffsetParent: function() {\n\t\treturn this.map( function() {\n\t\t\tvar offsetParent = this.offsetParent;\n\n\t\t\twhile ( offsetParent && jQuery.css( offsetParent, \"position\" ) === \"static\" ) {\n\t\t\t\toffsetParent = offsetParent.offsetParent;\n\t\t\t}\n\n\t\t\treturn offsetParent || documentElement;\n\t\t} );\n\t}\n} );\n\n// Create scrollLeft and scrollTop methods\njQuery.each( { scrollLeft: \"pageXOffset\", scrollTop: \"pageYOffset\" }, function( method, prop ) {\n\tvar top = \"pageYOffset\" === prop;\n\n\tjQuery.fn[ method ] = function( val ) {\n\t\treturn access( this, function( elem, method, val ) {\n\n\t\t\t// Coalesce documents and windows\n\t\t\tvar win;\n\t\t\tif ( isWindow( elem ) ) {\n\t\t\t\twin = elem;\n\t\t\t} else if ( elem.nodeType === 9 ) {\n\t\t\t\twin = elem.defaultView;\n\t\t\t}\n\n\t\t\tif ( val === undefined ) {\n\t\t\t\treturn win ? win[ prop ] : elem[ method ];\n\t\t\t}\n\n\t\t\tif ( win ) {\n\t\t\t\twin.scrollTo(\n\t\t\t\t\t!top ? val : win.pageXOffset,\n\t\t\t\t\ttop ? val : win.pageYOffset\n\t\t\t\t);\n\n\t\t\t} else {\n\t\t\t\telem[ method ] = val;\n\t\t\t}\n\t\t}, method, val, arguments.length );\n\t};\n} );\n\n// Support: Safari <=7 - 9.1, Chrome <=37 - 49\n// Add the top/left cssHooks using jQuery.fn.position\n// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084\n// Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347\n// getComputedStyle returns percent when specified for top/left/bottom/right;\n// rather than make the css module depend on the offset module, just check for it here\njQuery.each( [ \"top\", \"left\" ], function( _i, prop ) {\n\tjQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition,\n\t\tfunction( elem, computed ) {\n\t\t\tif ( computed ) {\n\t\t\t\tcomputed = curCSS( elem, prop );\n\n\t\t\t\t// If curCSS returns percentage, fallback to offset\n\t\t\t\treturn rnumnonpx.test( computed ) ?\n\t\t\t\t\tjQuery( elem ).position()[ prop ] + \"px\" :\n\t\t\t\t\tcomputed;\n\t\t\t}\n\t\t}\n\t);\n} );\n\n\n// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods\njQuery.each( { Height: \"height\", Width: \"width\" }, function( name, type ) {\n\tjQuery.each( {\n\t\tpadding: \"inner\" + name,\n\t\tcontent: type,\n\t\t\"\": \"outer\" + name\n\t}, function( defaultExtra, funcName ) {\n\n\t\t// Margin is only for outerHeight, outerWidth\n\t\tjQuery.fn[ funcName ] = function( margin, value ) {\n\t\t\tvar chainable = arguments.length && ( defaultExtra || typeof margin !== \"boolean\" ),\n\t\t\t\textra = defaultExtra || ( margin === true || value === true ? \"margin\" : \"border\" );\n\n\t\t\treturn access( this, function( elem, type, value ) {\n\t\t\t\tvar doc;\n\n\t\t\t\tif ( isWindow( elem ) ) {\n\n\t\t\t\t\t// $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)\n\t\t\t\t\treturn funcName.indexOf( \"outer\" ) === 0 ?\n\t\t\t\t\t\telem[ \"inner\" + name ] :\n\t\t\t\t\t\telem.document.documentElement[ \"client\" + name ];\n\t\t\t\t}\n\n\t\t\t\t// Get document width or height\n\t\t\t\tif ( elem.nodeType === 9 ) {\n\t\t\t\t\tdoc = elem.documentElement;\n\n\t\t\t\t\t// Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],\n\t\t\t\t\t// whichever is greatest\n\t\t\t\t\treturn Math.max(\n\t\t\t\t\t\telem.body[ \"scroll\" + name ], doc[ \"scroll\" + name ],\n\t\t\t\t\t\telem.body[ \"offset\" + name ], doc[ \"offset\" + name ],\n\t\t\t\t\t\tdoc[ \"client\" + name ]\n\t\t\t\t\t);\n\t\t\t\t}\n\n\t\t\t\treturn value === undefined ?\n\n\t\t\t\t\t// Get width or height on the element, requesting but not forcing parseFloat\n\t\t\t\t\tjQuery.css( elem, type, extra ) :\n\n\t\t\t\t\t// Set width or height on the element\n\t\t\t\t\tjQuery.style( elem, type, value, extra );\n\t\t\t}, type, chainable ? margin : undefined, chainable );\n\t\t};\n\t} );\n} );\n\n\njQuery.each( [\n\t\"ajaxStart\",\n\t\"ajaxStop\",\n\t\"ajaxComplete\",\n\t\"ajaxError\",\n\t\"ajaxSuccess\",\n\t\"ajaxSend\"\n], function( _i, type ) {\n\tjQuery.fn[ type ] = function( fn ) {\n\t\treturn this.on( type, fn );\n\t};\n} );\n\n\n\n\njQuery.fn.extend( {\n\n\tbind: function( types, data, fn ) {\n\t\treturn this.on( types, null, data, fn );\n\t},\n\tunbind: function( types, fn ) {\n\t\treturn this.off( types, null, fn );\n\t},\n\n\tdelegate: function( selector, types, data, fn ) {\n\t\treturn this.on( types, selector, data, fn );\n\t},\n\tundelegate: function( selector, types, fn ) {\n\n\t\t// ( namespace ) or ( selector, types [, fn] )\n\t\treturn arguments.length === 1 ?\n\t\t\tthis.off( selector, \"**\" ) :\n\t\t\tthis.off( types, selector || \"**\", fn );\n\t},\n\n\thover: function( fnOver, fnOut ) {\n\t\treturn this\n\t\t\t.on( \"mouseenter\", fnOver )\n\t\t\t.on( \"mouseleave\", fnOut || fnOver );\n\t}\n} );\n\njQuery.each(\n\t( \"blur focus focusin focusout resize scroll click dblclick \" +\n\t\"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave \" +\n\t\"change select submit keydown keypress keyup contextmenu\" ).split( \" \" ),\n\tfunction( _i, name ) {\n\n\t\t// Handle event binding\n\t\tjQuery.fn[ name ] = function( data, fn ) {\n\t\t\treturn arguments.length > 0 ?\n\t\t\t\tthis.on( name, null, data, fn ) :\n\t\t\t\tthis.trigger( name );\n\t\t};\n\t}\n);\n\n\n\n\n// Support: Android <=4.0 only\n// Make sure we trim BOM and NBSP\n// Require that the \"whitespace run\" starts from a non-whitespace\n// to avoid O(N^2) behavior when the engine would try matching \"\\s+$\" at each space position.\nvar rtrim = /^[\\s\\uFEFF\\xA0]+|([^\\s\\uFEFF\\xA0])[\\s\\uFEFF\\xA0]+$/g;\n\n// Bind a function to a context, optionally partially applying any\n// arguments.\n// jQuery.proxy is deprecated to promote standards (specifically Function#bind)\n// However, it is not slated for removal any time soon\njQuery.proxy = function( fn, context ) {\n\tvar tmp, args, proxy;\n\n\tif ( typeof context === \"string\" ) {\n\t\ttmp = fn[ context ];\n\t\tcontext = fn;\n\t\tfn = tmp;\n\t}\n\n\t// Quick check to determine if target is callable, in the spec\n\t// this throws a TypeError, but we will just return undefined.\n\tif ( !isFunction( fn ) ) {\n\t\treturn undefined;\n\t}\n\n\t// Simulated bind\n\targs = slice.call( arguments, 2 );\n\tproxy = function() {\n\t\treturn fn.apply( context || this, args.concat( slice.call( arguments ) ) );\n\t};\n\n\t// Set the guid of unique handler to the same of original handler, so it can be removed\n\tproxy.guid = fn.guid = fn.guid || jQuery.guid++;\n\n\treturn proxy;\n};\n\njQuery.holdReady = function( hold ) {\n\tif ( hold ) {\n\t\tjQuery.readyWait++;\n\t} else {\n\t\tjQuery.ready( true );\n\t}\n};\njQuery.isArray = Array.isArray;\njQuery.parseJSON = JSON.parse;\njQuery.nodeName = nodeName;\njQuery.isFunction = isFunction;\njQuery.isWindow = isWindow;\njQuery.camelCase = camelCase;\njQuery.type = toType;\n\njQuery.now = Date.now;\n\njQuery.isNumeric = function( obj ) {\n\n\t// As of jQuery 3.0, isNumeric is limited to\n\t// strings and numbers (primitives or objects)\n\t// that can be coerced to finite numbers (gh-2662)\n\tvar type = jQuery.type( obj );\n\treturn ( type === \"number\" || type === \"string\" ) &&\n\n\t\t// parseFloat NaNs numeric-cast false positives (\"\")\n\t\t// ...but misinterprets leading-number strings, particularly hex literals (\"0x...\")\n\t\t// subtraction forces infinities to NaN\n\t\t!isNaN( obj - parseFloat( obj ) );\n};\n\njQuery.trim = function( text ) {\n\treturn text == null ?\n\t\t\"\" :\n\t\t( text + \"\" ).replace( rtrim, \"$1\" );\n};\n\n\n\n// Register as a named AMD module, since jQuery can be concatenated with other\n// files that may use define, but not via a proper concatenation script that\n// understands anonymous AMD modules. A named AMD is safest and most robust\n// way to register. Lowercase jquery is used because AMD module names are\n// derived from file names, and jQuery is normally delivered in a lowercase\n// file name. Do this after creating the global so that if an AMD module wants\n// to call noConflict to hide this version of jQuery, it will work.\n\n// Note that for maximum portability, libraries that are not jQuery should\n// declare themselves as anonymous modules, and avoid setting a global if an\n// AMD loader is present. jQuery is a special case. For more information, see\n// https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon\n\nif ( typeof define === \"function\" && define.amd ) {\n\tdefine( \"jquery\", [], function() {\n\t\treturn jQuery;\n\t} );\n}\n\n\n\n\nvar\n\n\t// Map over jQuery in case of overwrite\n\t_jQuery = window.jQuery,\n\n\t// Map over the $ in case of overwrite\n\t_$ = window.$;\n\njQuery.noConflict = function( deep ) {\n\tif ( window.$ === jQuery ) {\n\t\twindow.$ = _$;\n\t}\n\n\tif ( deep && window.jQuery === jQuery ) {\n\t\twindow.jQuery = _jQuery;\n\t}\n\n\treturn jQuery;\n};\n\n// Expose jQuery and $ identifiers, even in AMD\n// (trac-7102#comment:10, https://github.com/jquery/jquery/pull/557)\n// and CommonJS for browser emulators (trac-13566)\nif ( typeof noGlobal === \"undefined\" ) {\n\twindow.jQuery = window.$ = jQuery;\n}\n\n\n\n\nreturn jQuery;\n} );\n","// ==ClosureCompiler==\n// @compilation_level ADVANCED_OPTIMIZATIONS\n// @externs_url http://closure-compiler.googlecode.com/svn/trunk/contrib/externs/maps/google_maps_api_v3_3.js\n// ==/ClosureCompiler==\n\n/**\n * @name MarkerClusterer for Google Maps v3\n * @version version 1.0\n * @author Luke Mahe\n * @fileoverview\n * The library creates and manages per-zoom-level clusters for large amounts of\n * markers.\n * <br/>\n * This is a v3 implementation of the\n * <a href=\"http://gmaps-utility-library-dev.googlecode.com/svn/tags/markerclusterer/\"\n * >v2 MarkerClusterer</a>.\n */\n\n/**\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *     http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n\n/**\n * A Marker Clusterer that clusters markers.\n *\n * @param {google.maps.Map} map The Google map to attach to.\n * @param {Array.<google.maps.Marker>=} opt_markers Optional markers to add to\n *   the cluster.\n * @param {Object=} opt_options support the following options:\n *     'gridSize': (number) The grid size of a cluster in pixels.\n *     'maxZoom': (number) The maximum zoom level that a marker can be part of a\n *                cluster.\n *     'zoomOnClick': (boolean) Whether the default behaviour of clicking on a\n *                    cluster is to zoom into it.\n *     'averageCenter': (boolean) Wether the center of each cluster should be\n *                      the average of all markers in the cluster.\n *     'minimumClusterSize': (number) The minimum number of markers to be in a\n *                           cluster before the markers are hidden and a count\n *                           is shown.\n *     'styles': (object) An object that has style properties:\n *       'url': (string) The image url.\n *       'height': (number) The image height.\n *       'width': (number) The image width.\n *       'anchor': (Array) The anchor position of the label text.\n *       'textColor': (string) The text color.\n *       'textSize': (number) The text size.\n *       'backgroundPosition': (string) The position of the backgound x, y.\n *       'iconAnchor': (Array) The anchor position of the icon x, y.\n * @constructor\n * @extends google.maps.OverlayView\n */\nfunction MarkerClusterer(map, opt_markers, opt_options) {\n  // MarkerClusterer implements google.maps.OverlayView interface. We use the\n  // extend function to extend MarkerClusterer with google.maps.OverlayView\n  // because it might not always be available when the code is defined so we\n  // look for it at the last possible moment. If it doesn't exist now then\n  // there is no point going ahead :)\n  this.extend(MarkerClusterer, google.maps.OverlayView);\n  this.map_ = map;\n\n  /**\n   * @type {Array.<google.maps.Marker>}\n   * @private\n   */\n  this.markers_ = [];\n\n  /**\n   *  @type {Array.<Cluster>}\n   */\n  this.clusters_ = [];\n\n  this.sizes = [53, 56, 66, 78, 90];\n\n  /**\n   * @private\n   */\n  this.styles_ = [];\n\n  /**\n   * @type {boolean}\n   * @private\n   */\n  this.ready_ = false;\n\n  var options = opt_options || {};\n\n  /**\n   * @type {number}\n   * @private\n   */\n  this.gridSize_ = options['gridSize'] || 60;\n\n  /**\n   * @private\n   */\n  this.minClusterSize_ = options['minimumClusterSize'] || 2;\n\n\n  /**\n   * @type {?number}\n   * @private\n   */\n  this.maxZoom_ = options['maxZoom'] || null;\n\n  this.styles_ = options['styles'] || [];\n\n  /**\n   * @type {string}\n   * @private\n   */\n  this.imagePath_ = options['imagePath'] ||\n      this.MARKER_CLUSTER_IMAGE_PATH_;\n\n  /**\n   * @type {string}\n   * @private\n   */\n  this.imageExtension_ = options['imageExtension'] ||\n      this.MARKER_CLUSTER_IMAGE_EXTENSION_;\n\n  /**\n   * @type {boolean}\n   * @private\n   */\n  this.zoomOnClick_ = true;\n\n  if (options['zoomOnClick'] != undefined) {\n    this.zoomOnClick_ = options['zoomOnClick'];\n  }\n\n  /**\n   * @type {boolean}\n   * @private\n   */\n  this.averageCenter_ = false;\n\n  if (options['averageCenter'] != undefined) {\n    this.averageCenter_ = options['averageCenter'];\n  }\n\n  this.setupStyles_();\n\n  this.setMap(map);\n\n  /**\n   * @type {number}\n   * @private\n   */\n  this.prevZoom_ = this.map_.getZoom();\n\n  // Add the map event listeners\n  var that = this;\n  google.maps.event.addListener(this.map_, 'zoom_changed', function() {\n    var zoom = that.map_.getZoom();\n\n    if (that.prevZoom_ != zoom) {\n      that.prevZoom_ = zoom;\n      that.resetViewport();\n    }\n  });\n\n  google.maps.event.addListener(this.map_, 'idle', function() {\n    that.redraw();\n  });\n\n  // Finally, add the markers\n  if (opt_markers && opt_markers.length) {\n    this.addMarkers(opt_markers, false);\n  }\n}\n\n\n/**\n * The marker cluster image path.\n *\n * @type {string}\n * @private\n */\nMarkerClusterer.prototype.MARKER_CLUSTER_IMAGE_PATH_ =\n    'http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/' +\n    'images/m';\n\n\n/**\n * The marker cluster image path.\n *\n * @type {string}\n * @private\n */\nMarkerClusterer.prototype.MARKER_CLUSTER_IMAGE_EXTENSION_ = 'png';\n\n\n/**\n * Extends a objects prototype by anothers.\n *\n * @param {Object} obj1 The object to be extended.\n * @param {Object} obj2 The object to extend with.\n * @return {Object} The new extended object.\n * @ignore\n */\nMarkerClusterer.prototype.extend = function(obj1, obj2) {\n  return (function(object) {\n    for (var property in object.prototype) {\n      this.prototype[property] = object.prototype[property];\n    }\n    return this;\n  }).apply(obj1, [obj2]);\n};\n\n\n/**\n * Implementaion of the interface method.\n * @ignore\n */\nMarkerClusterer.prototype.onAdd = function() {\n  this.setReady_(true);\n};\n\n/**\n * Implementaion of the interface method.\n * @ignore\n */\nMarkerClusterer.prototype.draw = function() {};\n\n/**\n * Sets up the styles object.\n *\n * @private\n */\nMarkerClusterer.prototype.setupStyles_ = function() {\n  if (this.styles_.length) {\n    return;\n  }\n\n  for (var i = 0, size; size = this.sizes[i]; i++) {\n    this.styles_.push({\n      url: this.imagePath_ + (i + 1) + '.' + this.imageExtension_,\n      height: size,\n      width: size\n    });\n  }\n};\n\n/**\n *  Fit the map to the bounds of the markers in the clusterer.\n */\nMarkerClusterer.prototype.fitMapToMarkers = function() {\n  var markers = this.getMarkers();\n  var bounds = new google.maps.LatLngBounds();\n  for (var i = 0, marker; marker = markers[i]; i++) {\n    bounds.extend(marker.getPosition());\n  }\n\n  this.map_.fitBounds(bounds);\n};\n\n\n/**\n *  Sets the styles.\n *\n *  @param {Object} styles The style to set.\n */\nMarkerClusterer.prototype.setStyles = function(styles) {\n  this.styles_ = styles;\n};\n\n\n/**\n *  Gets the styles.\n *\n *  @return {Object} The styles object.\n */\nMarkerClusterer.prototype.getStyles = function() {\n  return this.styles_;\n};\n\n\n/**\n * Whether zoom on click is set.\n *\n * @return {boolean} True if zoomOnClick_ is set.\n */\nMarkerClusterer.prototype.isZoomOnClick = function() {\n  return this.zoomOnClick_;\n};\n\n/**\n * Whether average center is set.\n *\n * @return {boolean} True if averageCenter_ is set.\n */\nMarkerClusterer.prototype.isAverageCenter = function() {\n  return this.averageCenter_;\n};\n\n\n/**\n *  Returns the array of markers in the clusterer.\n *\n *  @return {Array.<google.maps.Marker>} The markers.\n */\nMarkerClusterer.prototype.getMarkers = function() {\n  return this.markers_;\n};\n\n\n/**\n *  Returns the number of markers in the clusterer\n *\n *  @return {Number} The number of markers.\n */\nMarkerClusterer.prototype.getTotalMarkers = function() {\n  return this.markers_.length;\n};\n\n\n/**\n *  Sets the max zoom for the clusterer.\n *\n *  @param {number} maxZoom The max zoom level.\n */\nMarkerClusterer.prototype.setMaxZoom = function(maxZoom) {\n  this.maxZoom_ = maxZoom;\n};\n\n\n/**\n *  Gets the max zoom for the clusterer.\n *\n *  @return {number} The max zoom level.\n */\nMarkerClusterer.prototype.getMaxZoom = function() {\n  return this.maxZoom_;\n};\n\n\n/**\n *  The function for calculating the cluster icon image.\n *\n *  @param {Array.<google.maps.Marker>} markers The markers in the clusterer.\n *  @param {number} numStyles The number of styles available.\n *  @return {Object} A object properties: 'text' (string) and 'index' (number).\n *  @private\n */\nMarkerClusterer.prototype.calculator_ = function(markers, numStyles) {\n  var index = 0;\n  var count = markers.length;\n  var dv = count;\n  while (dv !== 0) {\n    dv = parseInt(dv / 10, 10);\n    index++;\n  }\n\n  index = Math.min(index, numStyles);\n  return {\n    text: count,\n    index: index\n  };\n};\n\n\n/**\n * Set the calculator function.\n *\n * @param {function(Array, number)} calculator The function to set as the\n *     calculator. The function should return a object properties:\n *     'text' (string) and 'index' (number).\n *\n */\nMarkerClusterer.prototype.setCalculator = function(calculator) {\n  this.calculator_ = calculator;\n};\n\n\n/**\n * Get the calculator function.\n *\n * @return {function(Array, number)} the calculator function.\n */\nMarkerClusterer.prototype.getCalculator = function() {\n  return this.calculator_;\n};\n\n\n/**\n * Add an array of markers to the clusterer.\n *\n * @param {Array.<google.maps.Marker>} markers The markers to add.\n * @param {boolean=} opt_nodraw Whether to redraw the clusters.\n */\nMarkerClusterer.prototype.addMarkers = function(markers, opt_nodraw) {\n  for (var i = 0, marker; marker = markers[i]; i++) {\n    this.pushMarkerTo_(marker);\n  }\n  if (!opt_nodraw) {\n    this.redraw();\n  }\n};\n\n\n/**\n * Pushes a marker to the clusterer.\n *\n * @param {google.maps.Marker} marker The marker to add.\n * @private\n */\nMarkerClusterer.prototype.pushMarkerTo_ = function(marker) {\n  marker.isAdded = false;\n  if (marker['draggable']) {\n    // If the marker is draggable add a listener so we update the clusters on\n    // the drag end.\n    var that = this;\n    google.maps.event.addListener(marker, 'dragend', function() {\n      marker.isAdded = false;\n      that.repaint();\n    });\n  }\n  this.markers_.push(marker);\n};\n\n\n/**\n * Adds a marker to the clusterer and redraws if needed.\n *\n * @param {google.maps.Marker} marker The marker to add.\n * @param {boolean=} opt_nodraw Whether to redraw the clusters.\n */\nMarkerClusterer.prototype.addMarker = function(marker, opt_nodraw) {\n  this.pushMarkerTo_(marker);\n  if (!opt_nodraw) {\n    this.redraw();\n  }\n};\n\n\n/**\n * Removes a marker and returns true if removed, false if not\n *\n * @param {google.maps.Marker} marker The marker to remove\n * @return {boolean} Whether the marker was removed or not\n * @private\n */\nMarkerClusterer.prototype.removeMarker_ = function(marker) {\n  var index = -1;\n  if (this.markers_.indexOf) {\n    index = this.markers_.indexOf(marker);\n  } else {\n    for (var i = 0, m; m = this.markers_[i]; i++) {\n      if (m == marker) {\n        index = i;\n        break;\n      }\n    }\n  }\n\n  if (index == -1) {\n    // Marker is not in our list of markers.\n    return false;\n  }\n\n  marker.setMap(null);\n\n  this.markers_.splice(index, 1);\n\n  return true;\n};\n\n\n/**\n * Remove a marker from the cluster.\n *\n * @param {google.maps.Marker} marker The marker to remove.\n * @param {boolean=} opt_nodraw Optional boolean to force no redraw.\n * @return {boolean} True if the marker was removed.\n */\nMarkerClusterer.prototype.removeMarker = function(marker, opt_nodraw) {\n  var removed = this.removeMarker_(marker);\n\n  if (!opt_nodraw && removed) {\n    this.resetViewport();\n    this.redraw();\n    return true;\n  } else {\n   return false;\n  }\n};\n\n\n/**\n * Removes an array of markers from the cluster.\n *\n * @param {Array.<google.maps.Marker>} markers The markers to remove.\n * @param {boolean=} opt_nodraw Optional boolean to force no redraw.\n */\nMarkerClusterer.prototype.removeMarkers = function(markers, opt_nodraw) {\n  var removed = false;\n\n  for (var i = 0, marker; marker = markers[i]; i++) {\n    var r = this.removeMarker_(marker);\n    removed = removed || r;\n  }\n\n  if (!opt_nodraw && removed) {\n    this.resetViewport();\n    this.redraw();\n    return true;\n  }\n};\n\n\n/**\n * Sets the clusterer's ready state.\n *\n * @param {boolean} ready The state.\n * @private\n */\nMarkerClusterer.prototype.setReady_ = function(ready) {\n  if (!this.ready_) {\n    this.ready_ = ready;\n    this.createClusters_();\n  }\n};\n\n\n/**\n * Returns the number of clusters in the clusterer.\n *\n * @return {number} The number of clusters.\n */\nMarkerClusterer.prototype.getTotalClusters = function() {\n  return this.clusters_.length;\n};\n\n\n/**\n * Returns the google map that the clusterer is associated with.\n *\n * @return {google.maps.Map} The map.\n */\nMarkerClusterer.prototype.getMap = function() {\n  return this.map_;\n};\n\n\n/**\n * Sets the google map that the clusterer is associated with.\n *\n * @param {google.maps.Map} map The map.\n */\nMarkerClusterer.prototype.setMap = function(map) {\n  this.map_ = map;\n};\n\n\n/**\n * Returns the size of the grid.\n *\n * @return {number} The grid size.\n */\nMarkerClusterer.prototype.getGridSize = function() {\n  return this.gridSize_;\n};\n\n\n/**\n * Sets the size of the grid.\n *\n * @param {number} size The grid size.\n */\nMarkerClusterer.prototype.setGridSize = function(size) {\n  this.gridSize_ = size;\n};\n\n\n/**\n * Returns the min cluster size.\n *\n * @return {number} The grid size.\n */\nMarkerClusterer.prototype.getMinClusterSize = function() {\n  return this.minClusterSize_;\n};\n\n/**\n * Sets the min cluster size.\n *\n * @param {number} size The grid size.\n */\nMarkerClusterer.prototype.setMinClusterSize = function(size) {\n  this.minClusterSize_ = size;\n};\n\n\n/**\n * Extends a bounds object by the grid size.\n *\n * @param {google.maps.LatLngBounds} bounds The bounds to extend.\n * @return {google.maps.LatLngBounds} The extended bounds.\n */\nMarkerClusterer.prototype.getExtendedBounds = function(bounds) {\n  var projection = this.getProjection();\n\n  // Turn the bounds into latlng.\n  var tr = new google.maps.LatLng(bounds.getNorthEast().lat(),\n      bounds.getNorthEast().lng());\n  var bl = new google.maps.LatLng(bounds.getSouthWest().lat(),\n      bounds.getSouthWest().lng());\n\n  // Convert the points to pixels and the extend out by the grid size.\n  var trPix = projection.fromLatLngToDivPixel(tr);\n  trPix.x += this.gridSize_;\n  trPix.y -= this.gridSize_;\n\n  var blPix = projection.fromLatLngToDivPixel(bl);\n  blPix.x -= this.gridSize_;\n  blPix.y += this.gridSize_;\n\n  // Convert the pixel points back to LatLng\n  var ne = projection.fromDivPixelToLatLng(trPix);\n  var sw = projection.fromDivPixelToLatLng(blPix);\n\n  // Extend the bounds to contain the new bounds.\n  bounds.extend(ne);\n  bounds.extend(sw);\n\n  return bounds;\n};\n\n\n/**\n * Determins if a marker is contained in a bounds.\n *\n * @param {google.maps.Marker} marker The marker to check.\n * @param {google.maps.LatLngBounds} bounds The bounds to check against.\n * @return {boolean} True if the marker is in the bounds.\n * @private\n */\nMarkerClusterer.prototype.isMarkerInBounds_ = function(marker, bounds) {\n  return bounds.contains(marker.getPosition());\n};\n\n\n/**\n * Clears all clusters and markers from the clusterer.\n */\nMarkerClusterer.prototype.clearMarkers = function() {\n  this.resetViewport(true);\n\n  // Set the markers a empty array.\n  this.markers_ = [];\n};\n\n\n/**\n * Clears all existing clusters and recreates them.\n * @param {boolean} opt_hide To also hide the marker.\n */\nMarkerClusterer.prototype.resetViewport = function(opt_hide) {\n  // Remove all the clusters\n  for (var i = 0, cluster; cluster = this.clusters_[i]; i++) {\n    cluster.remove();\n  }\n\n  // Reset the markers to not be added and to be invisible.\n  for (var i = 0, marker; marker = this.markers_[i]; i++) {\n    marker.isAdded = false;\n    if (opt_hide) {\n      marker.setMap(null);\n    }\n  }\n\n  this.clusters_ = [];\n};\n\n/**\n *\n */\nMarkerClusterer.prototype.repaint = function() {\n  var oldClusters = this.clusters_.slice();\n  this.clusters_.length = 0;\n  this.resetViewport();\n  this.redraw();\n\n  // Remove the old clusters.\n  // Do it in a timeout so the other clusters have been drawn first.\n  window.setTimeout(function() {\n    for (var i = 0, cluster; cluster = oldClusters[i]; i++) {\n      cluster.remove();\n    }\n  }, 0);\n};\n\n\n/**\n * Redraws the clusters.\n */\nMarkerClusterer.prototype.redraw = function() {\n  this.createClusters_();\n};\n\n\n/**\n * Calculates the distance between two latlng locations in km.\n * @see http://www.movable-type.co.uk/scripts/latlong.html\n *\n * @param {google.maps.LatLng} p1 The first lat lng point.\n * @param {google.maps.LatLng} p2 The second lat lng point.\n * @return {number} The distance between the two points in km.\n * @private\n*/\nMarkerClusterer.prototype.distanceBetweenPoints_ = function(p1, p2) {\n  if (!p1 || !p2) {\n    return 0;\n  }\n\n  var R = 6371; // Radius of the Earth in km\n  var dLat = (p2.lat() - p1.lat()) * Math.PI / 180;\n  var dLon = (p2.lng() - p1.lng()) * Math.PI / 180;\n  var a = Math.sin(dLat / 2) * Math.sin(dLat / 2) +\n    Math.cos(p1.lat() * Math.PI / 180) * Math.cos(p2.lat() * Math.PI / 180) *\n    Math.sin(dLon / 2) * Math.sin(dLon / 2);\n  var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));\n  var d = R * c;\n  return d;\n};\n\n\n/**\n * Add a marker to a cluster, or creates a new cluster.\n *\n * @param {google.maps.Marker} marker The marker to add.\n * @private\n */\nMarkerClusterer.prototype.addToClosestCluster_ = function(marker) {\n  var distance = 40000; // Some large number\n  var clusterToAddTo = null;\n  var pos = marker.getPosition();\n  for (var i = 0, cluster; cluster = this.clusters_[i]; i++) {\n    var center = cluster.getCenter();\n    if (center) {\n      var d = this.distanceBetweenPoints_(center, marker.getPosition());\n      if (d < distance) {\n        distance = d;\n        clusterToAddTo = cluster;\n      }\n    }\n  }\n\n  if (clusterToAddTo && clusterToAddTo.isMarkerInClusterBounds(marker)) {\n    clusterToAddTo.addMarker(marker);\n  } else {\n    var cluster = new Cluster(this);\n    cluster.addMarker(marker);\n    this.clusters_.push(cluster);\n  }\n};\n\n\n/**\n * Creates the clusters.\n *\n * @private\n */\nMarkerClusterer.prototype.createClusters_ = function() {\n  if (!this.ready_) {\n    return;\n  }\n\n  // Get our current map view bounds.\n  // Create a new bounds object so we don't affect the map.\n  var mapBounds = new google.maps.LatLngBounds(this.map_.getBounds().getSouthWest(),\n      this.map_.getBounds().getNorthEast());\n  var bounds = this.getExtendedBounds(mapBounds);\n\n  for (var i = 0, marker; marker = this.markers_[i]; i++) {\n    if (!marker.isAdded && this.isMarkerInBounds_(marker, bounds)) {\n      this.addToClosestCluster_(marker);\n    }\n  }\n};\n\n\n/**\n * A cluster that contains markers.\n *\n * @param {MarkerClusterer} markerClusterer The markerclusterer that this\n *     cluster is associated with.\n * @constructor\n * @ignore\n */\nfunction Cluster(markerClusterer) {\n  this.markerClusterer_ = markerClusterer;\n  this.map_ = markerClusterer.getMap();\n  this.gridSize_ = markerClusterer.getGridSize();\n  this.minClusterSize_ = markerClusterer.getMinClusterSize();\n  this.averageCenter_ = markerClusterer.isAverageCenter();\n  this.center_ = null;\n  this.markers_ = [];\n  this.bounds_ = null;\n  this.clusterIcon_ = new ClusterIcon(this, markerClusterer.getStyles(),\n      markerClusterer.getGridSize());\n}\n\n/**\n * Determins if a marker is already added to the cluster.\n *\n * @param {google.maps.Marker} marker The marker to check.\n * @return {boolean} True if the marker is already added.\n */\nCluster.prototype.isMarkerAlreadyAdded = function(marker) {\n  if (this.markers_.indexOf) {\n    return this.markers_.indexOf(marker) != -1;\n  } else {\n    for (var i = 0, m; m = this.markers_[i]; i++) {\n      if (m == marker) {\n        return true;\n      }\n    }\n  }\n  return false;\n};\n\n\n/**\n * Add a marker the cluster.\n *\n * @param {google.maps.Marker} marker The marker to add.\n * @return {boolean} True if the marker was added.\n */\nCluster.prototype.addMarker = function(marker) {\n  if (this.isMarkerAlreadyAdded(marker)) {\n    return false;\n  }\n\n  if (!this.center_) {\n    this.center_ = marker.getPosition();\n    this.calculateBounds_();\n  } else {\n    if (this.averageCenter_) {\n      var l = this.markers_.length + 1;\n      var lat = (this.center_.lat() * (l-1) + marker.getPosition().lat()) / l;\n      var lng = (this.center_.lng() * (l-1) + marker.getPosition().lng()) / l;\n      this.center_ = new google.maps.LatLng(lat, lng);\n      this.calculateBounds_();\n    }\n  }\n\n  marker.isAdded = true;\n  this.markers_.push(marker);\n\n  var len = this.markers_.length;\n  if (len < this.minClusterSize_ && marker.getMap() != this.map_) {\n    // Min cluster size not reached so show the marker.\n    marker.setMap(this.map_);\n  }\n\n  if (len == this.minClusterSize_) {\n    // Hide the markers that were showing.\n    for (var i = 0; i < len; i++) {\n      this.markers_[i].setMap(null);\n    }\n  }\n\n  if (len >= this.minClusterSize_) {\n    marker.setMap(null);\n  }\n\n  this.updateIcon();\n  return true;\n};\n\n\n/**\n * Returns the marker clusterer that the cluster is associated with.\n *\n * @return {MarkerClusterer} The associated marker clusterer.\n */\nCluster.prototype.getMarkerClusterer = function() {\n  return this.markerClusterer_;\n};\n\n\n/**\n * Returns the bounds of the cluster.\n *\n * @return {google.maps.LatLngBounds} the cluster bounds.\n */\nCluster.prototype.getBounds = function() {\n  var bounds = new google.maps.LatLngBounds(this.center_, this.center_);\n  var markers = this.getMarkers();\n  for (var i = 0, marker; marker = markers[i]; i++) {\n    bounds.extend(marker.getPosition());\n  }\n  return bounds;\n};\n\n\n/**\n * Removes the cluster\n */\nCluster.prototype.remove = function() {\n  this.clusterIcon_.remove();\n  this.markers_.length = 0;\n  delete this.markers_;\n};\n\n\n/**\n * Returns the center of the cluster.\n *\n * @return {number} The cluster center.\n */\nCluster.prototype.getSize = function() {\n  return this.markers_.length;\n};\n\n\n/**\n * Returns the center of the cluster.\n *\n * @return {Array.<google.maps.Marker>} The cluster center.\n */\nCluster.prototype.getMarkers = function() {\n  return this.markers_;\n};\n\n\n/**\n * Returns the center of the cluster.\n *\n * @return {google.maps.LatLng} The cluster center.\n */\nCluster.prototype.getCenter = function() {\n  return this.center_;\n};\n\n\n/**\n * Calculated the extended bounds of the cluster with the grid.\n *\n * @private\n */\nCluster.prototype.calculateBounds_ = function() {\n  var bounds = new google.maps.LatLngBounds(this.center_, this.center_);\n  this.bounds_ = this.markerClusterer_.getExtendedBounds(bounds);\n};\n\n\n/**\n * Determines if a marker lies in the clusters bounds.\n *\n * @param {google.maps.Marker} marker The marker to check.\n * @return {boolean} True if the marker lies in the bounds.\n */\nCluster.prototype.isMarkerInClusterBounds = function(marker) {\n  return this.bounds_.contains(marker.getPosition());\n};\n\n\n/**\n * Returns the map that the cluster is associated with.\n *\n * @return {google.maps.Map} The map.\n */\nCluster.prototype.getMap = function() {\n  return this.map_;\n};\n\n\n/**\n * Updates the cluster icon\n */\nCluster.prototype.updateIcon = function() {\n  var zoom = this.map_.getZoom();\n  var mz = this.markerClusterer_.getMaxZoom();\n\n  if (mz && zoom > mz) {\n    // The zoom is greater than our max zoom so show all the markers in cluster.\n    for (var i = 0, marker; marker = this.markers_[i]; i++) {\n      marker.setMap(this.map_);\n    }\n    return;\n  }\n\n  if (this.markers_.length < this.minClusterSize_) {\n    // Min cluster size not yet reached.\n    this.clusterIcon_.hide();\n    return;\n  }\n\n  var numStyles = this.markerClusterer_.getStyles().length;\n  var sums = this.markerClusterer_.getCalculator()(this.markers_, numStyles);\n  this.clusterIcon_.setCenter(this.center_);\n  this.clusterIcon_.setSums(sums);\n  this.clusterIcon_.show();\n};\n\n\n/**\n * A cluster icon\n *\n * @param {Cluster} cluster The cluster to be associated with.\n * @param {Object} styles An object that has style properties:\n *     'url': (string) The image url.\n *     'height': (number) The image height.\n *     'width': (number) The image width.\n *     'anchor': (Array) The anchor position of the label text.\n *     'textColor': (string) The text color.\n *     'textSize': (number) The text size.\n *     'backgroundPosition: (string) The background postition x, y.\n * @param {number=} opt_padding Optional padding to apply to the cluster icon.\n * @constructor\n * @extends google.maps.OverlayView\n * @ignore\n */\nfunction ClusterIcon(cluster, styles, opt_padding) {\n  cluster.getMarkerClusterer().extend(ClusterIcon, google.maps.OverlayView);\n\n  this.styles_ = styles;\n  this.padding_ = opt_padding || 0;\n  this.cluster_ = cluster;\n  this.center_ = null;\n  this.map_ = cluster.getMap();\n  this.div_ = null;\n  this.sums_ = null;\n  this.visible_ = false;\n\n  this.setMap(this.map_);\n}\n\n\n/**\n * Triggers the clusterclick event and zoom's if the option is set.\n */\nClusterIcon.prototype.triggerClusterClick = function() {\n  var markerClusterer = this.cluster_.getMarkerClusterer();\n\n  // Trigger the clusterclick event.\n  google.maps.event.trigger(markerClusterer, 'clusterclick', this.cluster_);\n\n  if (markerClusterer.isZoomOnClick()) {\n    // Zoom into the cluster.\n    this.map_.fitBounds(this.cluster_.getBounds());\n  }\n};\n\n\n/**\n * Adding the cluster icon to the dom.\n * @ignore\n */\nClusterIcon.prototype.onAdd = function() {\n  this.div_ = document.createElement('DIV');\n  if (this.visible_) {\n    var pos = this.getPosFromLatLng_(this.center_);\n    this.div_.style.cssText = this.createCss(pos);\n    this.div_.innerHTML = this.sums_.text;\n  }\n\n  var panes = this.getPanes();\n  panes.overlayMouseTarget.appendChild(this.div_);\n\n  var that = this;\n  google.maps.event.addDomListener(this.div_, 'click', function() {\n    that.triggerClusterClick();\n  });\n};\n\n\n/**\n * Returns the position to place the div dending on the latlng.\n *\n * @param {google.maps.LatLng} latlng The position in latlng.\n * @return {google.maps.Point} The position in pixels.\n * @private\n */\nClusterIcon.prototype.getPosFromLatLng_ = function(latlng) {\n  var pos = this.getProjection().fromLatLngToDivPixel(latlng);\n\n  if (typeof this.iconAnchor_ === 'object' && this.iconAnchor_.length === 2) {\n    pos.x -= this.iconAnchor_[0];\n    pos.y -= this.iconAnchor_[1];\n  } else {\n    pos.x -= parseInt(this.width_ / 2, 10);\n    pos.y -= parseInt(this.height_ / 2, 10);\n  }\n  return pos;\n};\n\n\n/**\n * Draw the icon.\n * @ignore\n */\nClusterIcon.prototype.draw = function() {\n  if (this.visible_) {\n    var pos = this.getPosFromLatLng_(this.center_);\n    this.div_.style.top = pos.y + 'px';\n    this.div_.style.left = pos.x + 'px';\n  }\n};\n\n\n/**\n * Hide the icon.\n */\nClusterIcon.prototype.hide = function() {\n  if (this.div_) {\n    this.div_.style.display = 'none';\n  }\n  this.visible_ = false;\n};\n\n\n/**\n * Position and show the icon.\n */\nClusterIcon.prototype.show = function() {\n  if (this.div_) {\n    var pos = this.getPosFromLatLng_(this.center_);\n    this.div_.style.cssText = this.createCss(pos);\n    this.div_.style.display = '';\n  }\n  this.visible_ = true;\n};\n\n\n/**\n * Remove the icon from the map\n */\nClusterIcon.prototype.remove = function() {\n  this.setMap(null);\n};\n\n\n/**\n * Implementation of the onRemove interface.\n * @ignore\n */\nClusterIcon.prototype.onRemove = function() {\n  if (this.div_ && this.div_.parentNode) {\n    this.hide();\n    this.div_.parentNode.removeChild(this.div_);\n    this.div_ = null;\n  }\n};\n\n\n/**\n * Set the sums of the icon.\n *\n * @param {Object} sums The sums containing:\n *   'text': (string) The text to display in the icon.\n *   'index': (number) The style index of the icon.\n */\nClusterIcon.prototype.setSums = function(sums) {\n  this.sums_ = sums;\n  this.text_ = sums.text;\n  this.index_ = sums.index;\n  if (this.div_) {\n    this.div_.innerHTML = sums.text;\n  }\n\n  this.useStyle();\n};\n\n\n/**\n * Sets the icon to the the styles.\n */\nClusterIcon.prototype.useStyle = function() {\n  var index = Math.max(0, this.sums_.index - 1);\n  index = Math.min(this.styles_.length - 1, index);\n  var style = this.styles_[index];\n  this.url_ = style['url'];\n  this.height_ = style['height'];\n  this.width_ = style['width'];\n  this.textColor_ = style['textColor'];\n  this.anchor_ = style['anchor'];\n  this.textSize_ = style['textSize'];\n  this.backgroundPosition_ = style['backgroundPosition'];\n  this.iconAnchor_ = style['iconAnchor'];\n};\n\n\n/**\n * Sets the center of the icon.\n *\n * @param {google.maps.LatLng} center The latlng to set as the center.\n */\nClusterIcon.prototype.setCenter = function(center) {\n  this.center_ = center;\n};\n\n\n/**\n * Create the css text based on the position of the icon.\n *\n * @param {google.maps.Point} pos The position.\n * @return {string} The css style text.\n */\nClusterIcon.prototype.createCss = function(pos) {\n  var style = [];\n  style.push('background-image:url(' + this.url_ + ');');\n  var backgroundPosition = this.backgroundPosition_ ? this.backgroundPosition_ : '0 0';\n  style.push('background-position:' + backgroundPosition + ';');\n\n  if (typeof this.anchor_ === 'object') {\n    if (typeof this.anchor_[0] === 'number' && this.anchor_[0] > 0 &&\n        this.anchor_[0] < this.height_) {\n      style.push('height:' + (this.height_ - this.anchor_[0]) +\n          'px; padding-top:' + this.anchor_[0] + 'px;');\n    } else if (typeof this.anchor_[0] === 'number' && this.anchor_[0] < 0 &&\n        -this.anchor_[0] < this.height_) {\n      style.push('height:' + this.height_ + 'px; line-height:' + (this.height_ + this.anchor_[0]) +\n          'px;');\n    } else {\n      style.push('height:' + this.height_ + 'px; line-height:' + this.height_ +\n          'px;');\n    }\n    if (typeof this.anchor_[1] === 'number' && this.anchor_[1] > 0 &&\n        this.anchor_[1] < this.width_) {\n      style.push('width:' + (this.width_ - this.anchor_[1]) +\n          'px; padding-left:' + this.anchor_[1] + 'px;');\n    } else {\n      style.push('width:' + this.width_ + 'px; text-align:center;');\n    }\n  } else {\n    style.push('height:' + this.height_ + 'px; line-height:' +\n        this.height_ + 'px; width:' + this.width_ + 'px; text-align:center;');\n  }\n\n  var txtColor = this.textColor_ ? this.textColor_ : 'black';\n  var txtSize = this.textSize_ ? this.textSize_ : 11;\n\n  style.push('cursor:pointer; top:' + pos.y + 'px; left:' +\n      pos.x + 'px; color:' + txtColor + '; position:absolute; font-size:' +\n      txtSize + 'px; font-family:Arial,sans-serif; font-weight:bold');\n  return style.join('');\n};\n\n\n// Export Symbols for Closure\n// If you are not going to compile with closure then you can remove the\n// code below.\nwindow['MarkerClusterer'] = MarkerClusterer;\nMarkerClusterer.prototype['addMarker'] = MarkerClusterer.prototype.addMarker;\nMarkerClusterer.prototype['addMarkers'] = MarkerClusterer.prototype.addMarkers;\nMarkerClusterer.prototype['clearMarkers'] =\n    MarkerClusterer.prototype.clearMarkers;\nMarkerClusterer.prototype['fitMapToMarkers'] =\n    MarkerClusterer.prototype.fitMapToMarkers;\nMarkerClusterer.prototype['getCalculator'] =\n    MarkerClusterer.prototype.getCalculator;\nMarkerClusterer.prototype['getGridSize'] =\n    MarkerClusterer.prototype.getGridSize;\nMarkerClusterer.prototype['getExtendedBounds'] =\n    MarkerClusterer.prototype.getExtendedBounds;\nMarkerClusterer.prototype['getMap'] = MarkerClusterer.prototype.getMap;\nMarkerClusterer.prototype['getMarkers'] = MarkerClusterer.prototype.getMarkers;\nMarkerClusterer.prototype['getMaxZoom'] = MarkerClusterer.prototype.getMaxZoom;\nMarkerClusterer.prototype['getStyles'] = MarkerClusterer.prototype.getStyles;\nMarkerClusterer.prototype['getTotalClusters'] =\n    MarkerClusterer.prototype.getTotalClusters;\nMarkerClusterer.prototype['getTotalMarkers'] =\n    MarkerClusterer.prototype.getTotalMarkers;\nMarkerClusterer.prototype['redraw'] = MarkerClusterer.prototype.redraw;\nMarkerClusterer.prototype['removeMarker'] =\n    MarkerClusterer.prototype.removeMarker;\nMarkerClusterer.prototype['removeMarkers'] =\n    MarkerClusterer.prototype.removeMarkers;\nMarkerClusterer.prototype['resetViewport'] =\n    MarkerClusterer.prototype.resetViewport;\nMarkerClusterer.prototype['repaint'] =\n    MarkerClusterer.prototype.repaint;\nMarkerClusterer.prototype['setCalculator'] =\n    MarkerClusterer.prototype.setCalculator;\nMarkerClusterer.prototype['setGridSize'] =\n    MarkerClusterer.prototype.setGridSize;\nMarkerClusterer.prototype['setMaxZoom'] =\n    MarkerClusterer.prototype.setMaxZoom;\nMarkerClusterer.prototype['onAdd'] = MarkerClusterer.prototype.onAdd;\nMarkerClusterer.prototype['draw'] = MarkerClusterer.prototype.draw;\n\nCluster.prototype['getCenter'] = Cluster.prototype.getCenter;\nCluster.prototype['getSize'] = Cluster.prototype.getSize;\nCluster.prototype['getMarkers'] = Cluster.prototype.getMarkers;\n\nClusterIcon.prototype['onAdd'] = ClusterIcon.prototype.onAdd;\nClusterIcon.prototype['draw'] = ClusterIcon.prototype.draw;\nClusterIcon.prototype['onRemove'] = ClusterIcon.prototype.onRemove;\n","import { InjectionToken, Injectable, Inject, PLATFORM_ID, Optional, EventEmitter, Component, ElementRef, NgZone, Input, HostBinding, Output, NgModule, Directive, forwardRef, HostListener } from '@angular/core';\nimport { isPlatformBrowser } from '@angular/common';\nimport { of, BehaviorSubject, Subject } from 'rxjs';\nimport { NG_VALUE_ACCESSOR, FormsModule } from '@angular/forms';\n\nimport * as ɵngcc0 from '@angular/core';\nfunction loadScript(renderMode, onLoaded, urlParams, url, nonce) {\n    window.ng2recaptchaloaded = () => {\n        onLoaded(grecaptcha);\n    };\n    const script = document.createElement(\"script\");\n    script.innerHTML = \"\";\n    const baseUrl = url || \"https://www.google.com/recaptcha/api.js\";\n    script.src = `${baseUrl}?render=${renderMode}&onload=ng2recaptchaloaded${urlParams}`;\n    if (nonce) {\n        script.nonce = nonce;\n    }\n    script.async = true;\n    script.defer = true;\n    document.head.appendChild(script);\n}\nconst loader = { loadScript };\n\nconst RECAPTCHA_LANGUAGE = new InjectionToken(\"recaptcha-language\");\nconst RECAPTCHA_BASE_URL = new InjectionToken(\"recaptcha-base-url\");\nconst RECAPTCHA_NONCE = new InjectionToken(\"recaptcha-nonce-tag\");\nconst RECAPTCHA_SETTINGS = new InjectionToken(\"recaptcha-settings\");\nconst RECAPTCHA_V3_SITE_KEY = new InjectionToken(\"recaptcha-v3-site-key\");\n\nclass RecaptchaLoaderService {\n    constructor(\n    // eslint-disable-next-line @typescript-eslint/ban-types\n    platformId, language, baseUrl, nonce, v3SiteKey) {\n        this.platformId = platformId;\n        this.language = language;\n        this.baseUrl = baseUrl;\n        this.nonce = nonce;\n        this.v3SiteKey = v3SiteKey;\n        this.init();\n        this.ready = isPlatformBrowser(this.platformId)\n            ? RecaptchaLoaderService.ready.asObservable()\n            : of();\n    }\n    /** @internal */\n    init() {\n        if (RecaptchaLoaderService.ready) {\n            return;\n        }\n        if (isPlatformBrowser(this.platformId)) {\n            const subject = new BehaviorSubject(null);\n            RecaptchaLoaderService.ready = subject;\n            const langParam = this.language ? \"&hl=\" + this.language : \"\";\n            const renderMode = this.v3SiteKey || \"explicit\";\n            loader.loadScript(renderMode, (grecaptcha) => subject.next(grecaptcha), langParam, this.baseUrl, this.nonce);\n        }\n    }\n}\nRecaptchaLoaderService.ɵfac = function RecaptchaLoaderService_Factory(t) { return new (t || RecaptchaLoaderService)(ɵngcc0.ɵɵinject(PLATFORM_ID), ɵngcc0.ɵɵinject(RECAPTCHA_LANGUAGE, 8), ɵngcc0.ɵɵinject(RECAPTCHA_BASE_URL, 8), ɵngcc0.ɵɵinject(RECAPTCHA_NONCE, 8), ɵngcc0.ɵɵinject(RECAPTCHA_V3_SITE_KEY, 8)); };\nRecaptchaLoaderService.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: RecaptchaLoaderService, factory: RecaptchaLoaderService.ɵfac });\n/**\n * @internal\n * @nocollapse\n */\nRecaptchaLoaderService.ready = null;\nRecaptchaLoaderService.ctorParameters = () => [\n    { type: Object, decorators: [{ type: Inject, args: [PLATFORM_ID,] }] },\n    { type: String, decorators: [{ type: Optional }, { type: Inject, args: [RECAPTCHA_LANGUAGE,] }] },\n    { type: String, decorators: [{ type: Optional }, { type: Inject, args: [RECAPTCHA_BASE_URL,] }] },\n    { type: String, decorators: [{ type: Optional }, { type: Inject, args: [RECAPTCHA_NONCE,] }] },\n    { type: String, decorators: [{ type: Optional }, { type: Inject, args: [RECAPTCHA_V3_SITE_KEY,] }] }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(RecaptchaLoaderService, [{\n        type: Injectable\n    }], function () { return [{ type: Object, decorators: [{\n                type: Inject,\n                args: [PLATFORM_ID]\n            }] }, { type: String, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [RECAPTCHA_LANGUAGE]\n            }] }, { type: String, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [RECAPTCHA_BASE_URL]\n            }] }, { type: String, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [RECAPTCHA_NONCE]\n            }] }, { type: String, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [RECAPTCHA_V3_SITE_KEY]\n            }] }]; }, null); })();\n\nlet nextId = 0;\nclass RecaptchaComponent {\n    constructor(elementRef, loader, zone, settings) {\n        this.elementRef = elementRef;\n        this.loader = loader;\n        this.zone = zone;\n        this.id = `ngrecaptcha-${nextId++}`;\n        this.errorMode = \"default\";\n        this.resolved = new EventEmitter();\n        // The rename will happen a bit later\n        // eslint-disable-next-line @angular-eslint/no-output-native\n        this.error = new EventEmitter();\n        if (settings) {\n            this.siteKey = settings.siteKey;\n            this.theme = settings.theme;\n            this.type = settings.type;\n            this.size = settings.size;\n            this.badge = settings.badge;\n        }\n    }\n    ngAfterViewInit() {\n        this.subscription = this.loader.ready.subscribe((grecaptcha) => {\n            if (grecaptcha != null && grecaptcha.render instanceof Function) {\n                this.grecaptcha = grecaptcha;\n                this.renderRecaptcha();\n            }\n        });\n    }\n    ngOnDestroy() {\n        // reset the captcha to ensure it does not leave anything behind\n        // after the component is no longer needed\n        this.grecaptchaReset();\n        if (this.subscription) {\n            this.subscription.unsubscribe();\n        }\n    }\n    /**\n     * Executes the invisible recaptcha.\n     * Does nothing if component's size is not set to \"invisible\".\n     */\n    execute() {\n        if (this.size !== \"invisible\") {\n            return;\n        }\n        if (this.widget != null) {\n            this.grecaptcha.execute(this.widget);\n        }\n        else {\n            // delay execution of recaptcha until it actually renders\n            this.executeRequested = true;\n        }\n    }\n    reset() {\n        if (this.widget != null) {\n            if (this.grecaptcha.getResponse(this.widget)) {\n                // Only emit an event in case if something would actually change.\n                // That way we do not trigger \"touching\" of the control if someone does a \"reset\"\n                // on a non-resolved captcha.\n                this.resolved.emit(null);\n            }\n            this.grecaptchaReset();\n        }\n    }\n    /**\n     * ⚠️ Warning! Use this property at your own risk!\n     *\n     * While this member is `public`, it is not a part of the component's public API.\n     * The semantic versioning guarantees _will not be honored_! Thus, you might find that this property behavior changes in incompatible ways in minor or even patch releases.\n     * You are **strongly advised** against using this property.\n     * Instead, use more idiomatic ways to get reCAPTCHA value, such as `resolved` EventEmitter, or form-bound methods (ngModel, formControl, and the likes).å\n     */\n    get __unsafe_widgetValue() {\n        return this.widget != null\n            ? this.grecaptcha.getResponse(this.widget)\n            : null;\n    }\n    /** @internal */\n    expired() {\n        this.resolved.emit(null);\n    }\n    /** @internal */\n    errored(args) {\n        this.error.emit(args);\n    }\n    /** @internal */\n    captchaResponseCallback(response) {\n        this.resolved.emit(response);\n    }\n    /** @internal */\n    grecaptchaReset() {\n        if (this.widget != null) {\n            this.zone.runOutsideAngular(() => this.grecaptcha.reset(this.widget));\n        }\n    }\n    /** @internal */\n    renderRecaptcha() {\n        // This `any` can be removed after @types/grecaptcha get updated\n        const renderOptions = {\n            badge: this.badge,\n            callback: (response) => {\n                this.zone.run(() => this.captchaResponseCallback(response));\n            },\n            \"expired-callback\": () => {\n                this.zone.run(() => this.expired());\n            },\n            sitekey: this.siteKey,\n            size: this.size,\n            tabindex: this.tabIndex,\n            theme: this.theme,\n            type: this.type,\n        };\n        if (this.errorMode === \"handled\") {\n            renderOptions[\"error-callback\"] = (...args) => {\n                this.zone.run(() => this.errored(args));\n            };\n        }\n        this.widget = this.grecaptcha.render(this.elementRef.nativeElement, renderOptions);\n        if (this.executeRequested === true) {\n            this.executeRequested = false;\n            this.execute();\n        }\n    }\n}\nRecaptchaComponent.ɵfac = function RecaptchaComponent_Factory(t) { return new (t || RecaptchaComponent)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ElementRef), ɵngcc0.ɵɵdirectiveInject(RecaptchaLoaderService), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.NgZone), ɵngcc0.ɵɵdirectiveInject(RECAPTCHA_SETTINGS, 8)); };\nRecaptchaComponent.ɵcmp = /*@__PURE__*/ ɵngcc0.ɵɵdefineComponent({ type: RecaptchaComponent, selectors: [[\"re-captcha\"]], hostVars: 1, hostBindings: function RecaptchaComponent_HostBindings(rf, ctx) { if (rf & 2) {\n        ɵngcc0.ɵɵattribute(\"id\", ctx.id);\n    } }, inputs: { id: \"id\", errorMode: \"errorMode\", siteKey: \"siteKey\", theme: \"theme\", type: \"type\", size: \"size\", badge: \"badge\", tabIndex: \"tabIndex\" }, outputs: { resolved: \"resolved\", error: \"error\" }, exportAs: [\"reCaptcha\"], decls: 0, vars: 0, template: function RecaptchaComponent_Template(rf, ctx) { }, encapsulation: 2 });\nRecaptchaComponent.ctorParameters = () => [\n    { type: ElementRef },\n    { type: RecaptchaLoaderService },\n    { type: NgZone },\n    { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [RECAPTCHA_SETTINGS,] }] }\n];\nRecaptchaComponent.propDecorators = {\n    id: [{ type: Input }, { type: HostBinding, args: [\"attr.id\",] }],\n    siteKey: [{ type: Input }],\n    theme: [{ type: Input }],\n    type: [{ type: Input }],\n    size: [{ type: Input }],\n    tabIndex: [{ type: Input }],\n    badge: [{ type: Input }],\n    errorMode: [{ type: Input }],\n    resolved: [{ type: Output }],\n    error: [{ type: Output }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(RecaptchaComponent, [{\n        type: Component,\n        args: [{\n                exportAs: \"reCaptcha\",\n                selector: \"re-captcha\",\n                template: ``\n            }]\n    }], function () { return [{ type: ɵngcc0.ElementRef }, { type: RecaptchaLoaderService }, { type: ɵngcc0.NgZone }, { type: undefined, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [RECAPTCHA_SETTINGS]\n            }] }]; }, { id: [{\n            type: Input\n        }, {\n            type: HostBinding,\n            args: [\"attr.id\"]\n        }], errorMode: [{\n            type: Input\n        }], resolved: [{\n            type: Output\n        }], error: [{\n            type: Output\n        }], siteKey: [{\n            type: Input\n        }], theme: [{\n            type: Input\n        }], type: [{\n            type: Input\n        }], size: [{\n            type: Input\n        }], badge: [{\n            type: Input\n        }], tabIndex: [{\n            type: Input\n        }] }); })();\n\nclass RecaptchaCommonModule {\n}\nRecaptchaCommonModule.ɵfac = function RecaptchaCommonModule_Factory(t) { return new (t || RecaptchaCommonModule)(); };\nRecaptchaCommonModule.ɵmod = /*@__PURE__*/ ɵngcc0.ɵɵdefineNgModule({ type: RecaptchaCommonModule });\nRecaptchaCommonModule.ɵinj = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjector({});\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(RecaptchaCommonModule, [{\n        type: NgModule,\n        args: [{\n                declarations: [RecaptchaComponent],\n                exports: [RecaptchaComponent]\n            }]\n    }], null, null); })();\n(function () { (typeof ngJitMode === \"undefined\" || ngJitMode) && ɵngcc0.ɵɵsetNgModuleScope(RecaptchaCommonModule, { declarations: [RecaptchaComponent], exports: [RecaptchaComponent] }); })();\n\nclass RecaptchaModule {\n}\nRecaptchaModule.ɵfac = function RecaptchaModule_Factory(t) { return new (t || RecaptchaModule)(); };\nRecaptchaModule.ɵmod = /*@__PURE__*/ ɵngcc0.ɵɵdefineNgModule({ type: RecaptchaModule });\nRecaptchaModule.ɵinj = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjector({ providers: [RecaptchaLoaderService], imports: [RecaptchaCommonModule] });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(RecaptchaModule, [{\n        type: NgModule,\n        args: [{\n                exports: [RecaptchaComponent],\n                imports: [RecaptchaCommonModule],\n                providers: [RecaptchaLoaderService]\n            }]\n    }], null, null); })();\n(function () { (typeof ngJitMode === \"undefined\" || ngJitMode) && ɵngcc0.ɵɵsetNgModuleScope(RecaptchaModule, { imports: [RecaptchaCommonModule], exports: [RecaptchaComponent] }); })();\n\n/**\n * The main service for working with reCAPTCHA v3 APIs.\n *\n * Use the `execute` method for executing a single action, and\n * `onExecute` observable for listening to all actions at once.\n */\nclass ReCaptchaV3Service {\n    constructor(zone, siteKey, \n    // eslint-disable-next-line @typescript-eslint/ban-types\n    platformId, baseUrl, nonce, language) {\n        /** @internal */\n        this.onLoadComplete = (grecaptcha) => {\n            this.grecaptcha = grecaptcha;\n            if (this.actionBacklog && this.actionBacklog.length > 0) {\n                this.actionBacklog.forEach(([action, subject]) => this.executeActionWithSubject(action, subject));\n                this.actionBacklog = undefined;\n            }\n        };\n        this.zone = zone;\n        this.isBrowser = isPlatformBrowser(platformId);\n        this.siteKey = siteKey;\n        this.nonce = nonce;\n        this.language = language;\n        this.baseUrl = baseUrl;\n        this.init();\n    }\n    get onExecute() {\n        if (!this.onExecuteSubject) {\n            this.onExecuteSubject = new Subject();\n            this.onExecuteObservable = this.onExecuteSubject.asObservable();\n        }\n        return this.onExecuteObservable;\n    }\n    get onExecuteError() {\n        if (!this.onExecuteErrorSubject) {\n            this.onExecuteErrorSubject = new Subject();\n            this.onExecuteErrorObservable = this.onExecuteErrorSubject.asObservable();\n        }\n        return this.onExecuteErrorObservable;\n    }\n    /**\n     * Executes the provided `action` with reCAPTCHA v3 API.\n     * Use the emitted token value for verification purposes on the backend.\n     *\n     * For more information about reCAPTCHA v3 actions and tokens refer to the official documentation at\n     * https://developers.google.com/recaptcha/docs/v3.\n     *\n     * @param {string} action the action to execute\n     * @returns {Observable<string>} an `Observable` that will emit the reCAPTCHA v3 string `token` value whenever ready.\n     * The returned `Observable` completes immediately after emitting a value.\n     */\n    execute(action) {\n        const subject = new Subject();\n        if (this.isBrowser) {\n            if (!this.grecaptcha) {\n                // todo: add to array of later executions\n                if (!this.actionBacklog) {\n                    this.actionBacklog = [];\n                }\n                this.actionBacklog.push([action, subject]);\n            }\n            else {\n                this.executeActionWithSubject(action, subject);\n            }\n        }\n        return subject.asObservable();\n    }\n    /** @internal */\n    executeActionWithSubject(action, subject) {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        const onError = (error) => {\n            this.zone.run(() => {\n                subject.error(error);\n                if (this.onExecuteErrorSubject) {\n                    // We don't know any better at this point, unfortunately, so have to resort to `any`\n                    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment\n                    this.onExecuteErrorSubject.next({ action, error });\n                }\n            });\n        };\n        this.zone.runOutsideAngular(() => {\n            try {\n                this.grecaptcha\n                    .execute(this.siteKey, { action })\n                    .then((token) => {\n                    this.zone.run(() => {\n                        subject.next(token);\n                        subject.complete();\n                        if (this.onExecuteSubject) {\n                            this.onExecuteSubject.next({ action, token });\n                        }\n                    });\n                }, onError);\n            }\n            catch (e) {\n                onError(e);\n            }\n        });\n    }\n    /** @internal */\n    init() {\n        if (this.isBrowser) {\n            if (\"grecaptcha\" in window) {\n                this.grecaptcha = grecaptcha;\n            }\n            else {\n                const langParam = this.language ? \"&hl=\" + this.language : \"\";\n                loader.loadScript(this.siteKey, this.onLoadComplete, langParam, this.baseUrl, this.nonce);\n            }\n        }\n    }\n}\nReCaptchaV3Service.ɵfac = function ReCaptchaV3Service_Factory(t) { return new (t || ReCaptchaV3Service)(ɵngcc0.ɵɵinject(ɵngcc0.NgZone), ɵngcc0.ɵɵinject(RECAPTCHA_V3_SITE_KEY), ɵngcc0.ɵɵinject(PLATFORM_ID), ɵngcc0.ɵɵinject(RECAPTCHA_BASE_URL, 8), ɵngcc0.ɵɵinject(RECAPTCHA_NONCE, 8), ɵngcc0.ɵɵinject(RECAPTCHA_LANGUAGE, 8)); };\nReCaptchaV3Service.ɵprov = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjectable({ token: ReCaptchaV3Service, factory: ReCaptchaV3Service.ɵfac });\nReCaptchaV3Service.ctorParameters = () => [\n    { type: NgZone },\n    { type: String, decorators: [{ type: Inject, args: [RECAPTCHA_V3_SITE_KEY,] }] },\n    { type: Object, decorators: [{ type: Inject, args: [PLATFORM_ID,] }] },\n    { type: String, decorators: [{ type: Optional }, { type: Inject, args: [RECAPTCHA_BASE_URL,] }] },\n    { type: String, decorators: [{ type: Optional }, { type: Inject, args: [RECAPTCHA_NONCE,] }] },\n    { type: String, decorators: [{ type: Optional }, { type: Inject, args: [RECAPTCHA_LANGUAGE,] }] }\n];\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(ReCaptchaV3Service, [{\n        type: Injectable\n    }], function () { return [{ type: ɵngcc0.NgZone }, { type: String, decorators: [{\n                type: Inject,\n                args: [RECAPTCHA_V3_SITE_KEY]\n            }] }, { type: Object, decorators: [{\n                type: Inject,\n                args: [PLATFORM_ID]\n            }] }, { type: String, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [RECAPTCHA_BASE_URL]\n            }] }, { type: String, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [RECAPTCHA_NONCE]\n            }] }, { type: String, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [RECAPTCHA_LANGUAGE]\n            }] }]; }, null); })();\n\nclass RecaptchaV3Module {\n}\nRecaptchaV3Module.ɵfac = function RecaptchaV3Module_Factory(t) { return new (t || RecaptchaV3Module)(); };\nRecaptchaV3Module.ɵmod = /*@__PURE__*/ ɵngcc0.ɵɵdefineNgModule({ type: RecaptchaV3Module });\nRecaptchaV3Module.ɵinj = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjector({ providers: [ReCaptchaV3Service] });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(RecaptchaV3Module, [{\n        type: NgModule,\n        args: [{\n                providers: [ReCaptchaV3Service]\n            }]\n    }], null, null); })();\n\nclass RecaptchaValueAccessorDirective {\n    constructor(host) {\n        this.host = host;\n        this.requiresControllerReset = false;\n    }\n    writeValue(value) {\n        if (!value) {\n            this.host.reset();\n        }\n        else {\n            // In this case, it is most likely that a form controller has requested to write a specific value into the component.\n            // This isn't really a supported case - reCAPTCHA values are single-use, and, in a sense, readonly.\n            // What this means is that the form controller has recaptcha control state of X, while reCAPTCHA itself can't \"restore\"\n            // to that state. In order to make form controller aware of this discrepancy, and to fix the said misalignment,\n            // we'll be telling the controller to \"reset\" the value back to null.\n            if (this.host.__unsafe_widgetValue !== value &&\n                Boolean(this.host.__unsafe_widgetValue) === false) {\n                this.requiresControllerReset = true;\n            }\n        }\n    }\n    registerOnChange(fn) {\n        this.onChange = fn;\n        if (this.requiresControllerReset) {\n            this.requiresControllerReset = false;\n            this.onChange(null);\n        }\n    }\n    registerOnTouched(fn) {\n        this.onTouched = fn;\n    }\n    onResolve($event) {\n        if (this.onChange) {\n            this.onChange($event);\n        }\n        if (this.onTouched) {\n            this.onTouched();\n        }\n    }\n}\nRecaptchaValueAccessorDirective.ɵfac = function RecaptchaValueAccessorDirective_Factory(t) { return new (t || RecaptchaValueAccessorDirective)(ɵngcc0.ɵɵdirectiveInject(RecaptchaComponent)); };\nRecaptchaValueAccessorDirective.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: RecaptchaValueAccessorDirective, selectors: [[\"re-captcha\", \"formControlName\", \"\"], [\"re-captcha\", \"formControl\", \"\"], [\"re-captcha\", \"ngModel\", \"\"]], hostBindings: function RecaptchaValueAccessorDirective_HostBindings(rf, ctx) { if (rf & 1) {\n        ɵngcc0.ɵɵlistener(\"resolved\", function RecaptchaValueAccessorDirective_resolved_HostBindingHandler($event) { return ctx.onResolve($event); });\n    } }, features: [ɵngcc0.ɵɵProvidersFeature([\n            {\n                multi: true,\n                provide: NG_VALUE_ACCESSOR,\n                useExisting: forwardRef(() => RecaptchaValueAccessorDirective)\n            },\n        ])] });\nRecaptchaValueAccessorDirective.ctorParameters = () => [\n    { type: RecaptchaComponent }\n];\nRecaptchaValueAccessorDirective.propDecorators = {\n    onResolve: [{ type: HostListener, args: [\"resolved\", [\"$event\"],] }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(RecaptchaValueAccessorDirective, [{\n        type: Directive,\n        args: [{\n                providers: [\n                    {\n                        multi: true,\n                        provide: NG_VALUE_ACCESSOR,\n                        useExisting: forwardRef(() => RecaptchaValueAccessorDirective)\n                    },\n                ],\n                selector: \"re-captcha[formControlName],re-captcha[formControl],re-captcha[ngModel]\"\n            }]\n    }], function () { return [{ type: RecaptchaComponent }]; }, { onResolve: [{\n            type: HostListener,\n            args: [\"resolved\", [\"$event\"]]\n        }] }); })();\n\nclass RecaptchaFormsModule {\n}\nRecaptchaFormsModule.ɵfac = function RecaptchaFormsModule_Factory(t) { return new (t || RecaptchaFormsModule)(); };\nRecaptchaFormsModule.ɵmod = /*@__PURE__*/ ɵngcc0.ɵɵdefineNgModule({ type: RecaptchaFormsModule });\nRecaptchaFormsModule.ɵinj = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjector({ imports: [FormsModule, RecaptchaCommonModule] });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(RecaptchaFormsModule, [{\n        type: NgModule,\n        args: [{\n                declarations: [RecaptchaValueAccessorDirective],\n                exports: [RecaptchaValueAccessorDirective],\n                imports: [FormsModule, RecaptchaCommonModule]\n            }]\n    }], null, null); })();\n(function () { (typeof ngJitMode === \"undefined\" || ngJitMode) && ɵngcc0.ɵɵsetNgModuleScope(RecaptchaFormsModule, { declarations: function () { return [RecaptchaValueAccessorDirective]; }, imports: function () { return [FormsModule, RecaptchaCommonModule]; }, exports: function () { return [RecaptchaValueAccessorDirective]; } }); })();\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { RECAPTCHA_BASE_URL, RECAPTCHA_LANGUAGE, RECAPTCHA_NONCE, RECAPTCHA_SETTINGS, RECAPTCHA_V3_SITE_KEY, ReCaptchaV3Service, RecaptchaComponent, RecaptchaFormsModule, RecaptchaLoaderService, RecaptchaModule, RecaptchaV3Module, RecaptchaValueAccessorDirective, RecaptchaCommonModule as ɵa };\n\n","import { Subscriber } from '../Subscriber';\nimport { async } from '../scheduler/async';\nexport function sampleTime(period, scheduler = async) {\n    return (source) => source.lift(new SampleTimeOperator(period, scheduler));\n}\nclass SampleTimeOperator {\n    constructor(period, scheduler) {\n        this.period = period;\n        this.scheduler = scheduler;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new SampleTimeSubscriber(subscriber, this.period, this.scheduler));\n    }\n}\nclass SampleTimeSubscriber extends Subscriber {\n    constructor(destination, period, scheduler) {\n        super(destination);\n        this.period = period;\n        this.scheduler = scheduler;\n        this.hasValue = false;\n        this.add(scheduler.schedule(dispatchNotification, period, { subscriber: this, period }));\n    }\n    _next(value) {\n        this.lastValue = value;\n        this.hasValue = true;\n    }\n    notifyNext() {\n        if (this.hasValue) {\n            this.hasValue = false;\n            this.destination.next(this.lastValue);\n        }\n    }\n}\nfunction dispatchNotification(state) {\n    let { subscriber, period } = state;\n    subscriber.notifyNext();\n    this.schedule(state, period);\n}\n","import { Directive, ElementRef, EventEmitter, Input, NgModule, NgZone, Output } from '@angular/core';\nimport { fromEvent, of } from 'rxjs';\nimport { filter, map, mergeMap, sampleTime, tap } from 'rxjs/operators';\n\n/**\n * @fileoverview added by tsickle\n * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc\n */\n/**\n * @param {?} selector\n * @param {?} scrollWindow\n * @param {?} defaultElement\n * @param {?} fromRoot\n * @return {?}\n */\nimport * as ɵngcc0 from '@angular/core';\nfunction resolveContainerElement(selector, scrollWindow, defaultElement, fromRoot) {\n    /** @type {?} */\n    const hasWindow = window && !!window.document && window.document.documentElement;\n    /** @type {?} */\n    let container = hasWindow && scrollWindow ? window : defaultElement;\n    if (selector) {\n        /** @type {?} */\n        const containerIsString = selector && hasWindow && typeof selector === 'string';\n        container = containerIsString\n            ? findElement(selector, defaultElement.nativeElement, fromRoot)\n            : selector;\n        if (!container) {\n            throw new Error('ngx-infinite-scroll {resolveContainerElement()}: selector for');\n        }\n    }\n    return container;\n}\n/**\n * @param {?} selector\n * @param {?} customRoot\n * @param {?} fromRoot\n * @return {?}\n */\nfunction findElement(selector, customRoot, fromRoot) {\n    /** @type {?} */\n    const rootEl = fromRoot ? window.document : customRoot;\n    return rootEl.querySelector(selector);\n}\n/**\n * @param {?} prop\n * @return {?}\n */\nfunction inputPropChanged(prop) {\n    return prop && !prop.firstChange;\n}\n/**\n * @return {?}\n */\nfunction hasWindowDefined() {\n    return typeof window !== 'undefined';\n}\n\n/**\n * @fileoverview added by tsickle\n * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc\n */\n/** @type {?} */\nconst VerticalProps = {\n    clientHeight: \"clientHeight\",\n    offsetHeight: \"offsetHeight\",\n    scrollHeight: \"scrollHeight\",\n    pageYOffset: \"pageYOffset\",\n    offsetTop: \"offsetTop\",\n    scrollTop: \"scrollTop\",\n    top: \"top\"\n};\n/** @type {?} */\nconst HorizontalProps = {\n    clientHeight: \"clientWidth\",\n    offsetHeight: \"offsetWidth\",\n    scrollHeight: \"scrollWidth\",\n    pageYOffset: \"pageXOffset\",\n    offsetTop: \"offsetLeft\",\n    scrollTop: \"scrollLeft\",\n    top: \"left\"\n};\nclass AxisResolver {\n    /**\n     * @param {?=} vertical\n     */\n    constructor(vertical = true) {\n        this.vertical = vertical;\n        this.propsMap = vertical ? VerticalProps : HorizontalProps;\n    }\n    /**\n     * @return {?}\n     */\n    clientHeightKey() {\n        return this.propsMap.clientHeight;\n    }\n    /**\n     * @return {?}\n     */\n    offsetHeightKey() {\n        return this.propsMap.offsetHeight;\n    }\n    /**\n     * @return {?}\n     */\n    scrollHeightKey() {\n        return this.propsMap.scrollHeight;\n    }\n    /**\n     * @return {?}\n     */\n    pageYOffsetKey() {\n        return this.propsMap.pageYOffset;\n    }\n    /**\n     * @return {?}\n     */\n    offsetTopKey() {\n        return this.propsMap.offsetTop;\n    }\n    /**\n     * @return {?}\n     */\n    scrollTopKey() {\n        return this.propsMap.scrollTop;\n    }\n    /**\n     * @return {?}\n     */\n    topKey() {\n        return this.propsMap.top;\n    }\n}\n\n/**\n * @fileoverview added by tsickle\n * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc\n */\n/**\n * @record\n */\n\n/**\n * @record\n */\n\n/**\n * @record\n */\n\n/**\n * @record\n */\n\n/**\n * @param {?} alwaysCallback\n * @param {?} shouldFireScrollEvent\n * @param {?} isTriggeredCurrentTotal\n * @return {?}\n */\nfunction shouldTriggerEvents(alwaysCallback, shouldFireScrollEvent, isTriggeredCurrentTotal) {\n    if (alwaysCallback && shouldFireScrollEvent) {\n        return true;\n    }\n    if (!isTriggeredCurrentTotal && shouldFireScrollEvent) {\n        return true;\n    }\n    return false;\n}\n\n/**\n * @fileoverview added by tsickle\n * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc\n */\n/**\n * @param {?} __0\n * @return {?}\n */\nfunction createResolver({ windowElement, axis }) {\n    return createResolverWithContainer({ axis, isWindow: isElementWindow(windowElement) }, windowElement);\n}\n/**\n * @param {?} resolver\n * @param {?} windowElement\n * @return {?}\n */\nfunction createResolverWithContainer(resolver, windowElement) {\n    /** @type {?} */\n    const container = resolver.isWindow || (windowElement && !windowElement.nativeElement)\n        ? windowElement\n        : windowElement.nativeElement;\n    return Object.assign({}, resolver, { container });\n}\n/**\n * @param {?} windowElement\n * @return {?}\n */\nfunction isElementWindow(windowElement) {\n    /** @type {?} */\n    const isWindow = ['Window', 'global'].some((obj) => Object.prototype.toString.call(windowElement).includes(obj));\n    return isWindow;\n}\n/**\n * @param {?} isContainerWindow\n * @param {?} windowElement\n * @return {?}\n */\nfunction getDocumentElement(isContainerWindow, windowElement) {\n    return isContainerWindow ? windowElement.document.documentElement : null;\n}\n/**\n * @param {?} element\n * @param {?} resolver\n * @return {?}\n */\nfunction calculatePoints(element, resolver) {\n    /** @type {?} */\n    const height = extractHeightForElement(resolver);\n    return resolver.isWindow\n        ? calculatePointsForWindow(height, element, resolver)\n        : calculatePointsForElement(height, element, resolver);\n}\n/**\n * @param {?} height\n * @param {?} element\n * @param {?} resolver\n * @return {?}\n */\nfunction calculatePointsForWindow(height, element, resolver) {\n    const { axis, container, isWindow } = resolver;\n    const { offsetHeightKey, clientHeightKey } = extractHeightPropKeys(axis);\n    // scrolled until now / current y point\n    /** @type {?} */\n    const scrolled = height +\n        getElementPageYOffset(getDocumentElement(isWindow, container), axis, isWindow);\n    // total height / most bottom y point\n    /** @type {?} */\n    const nativeElementHeight = getElementHeight(element.nativeElement, isWindow, offsetHeightKey, clientHeightKey);\n    /** @type {?} */\n    const totalToScroll = getElementOffsetTop(element.nativeElement, axis, isWindow) +\n        nativeElementHeight;\n    return { height, scrolled, totalToScroll, isWindow };\n}\n/**\n * @param {?} height\n * @param {?} element\n * @param {?} resolver\n * @return {?}\n */\nfunction calculatePointsForElement(height, element, resolver) {\n    const { axis, container } = resolver;\n    // perhaps use container.offsetTop instead of 'scrollTop'\n    /** @type {?} */\n    const scrolled = container[axis.scrollTopKey()];\n    /** @type {?} */\n    const totalToScroll = container[axis.scrollHeightKey()];\n    return { height, scrolled, totalToScroll, isWindow: false };\n}\n/**\n * @param {?} axis\n * @return {?}\n */\nfunction extractHeightPropKeys(axis) {\n    return {\n        offsetHeightKey: axis.offsetHeightKey(),\n        clientHeightKey: axis.clientHeightKey()\n    };\n}\n/**\n * @param {?} __0\n * @return {?}\n */\nfunction extractHeightForElement({ container, isWindow, axis }) {\n    const { offsetHeightKey, clientHeightKey } = extractHeightPropKeys(axis);\n    return getElementHeight(container, isWindow, offsetHeightKey, clientHeightKey);\n}\n/**\n * @param {?} elem\n * @param {?} isWindow\n * @param {?} offsetHeightKey\n * @param {?} clientHeightKey\n * @return {?}\n */\nfunction getElementHeight(elem, isWindow, offsetHeightKey, clientHeightKey) {\n    if (isNaN(elem[offsetHeightKey])) {\n        /** @type {?} */\n        const docElem = getDocumentElement(isWindow, elem);\n        return docElem ? docElem[clientHeightKey] : 0;\n    }\n    else {\n        return elem[offsetHeightKey];\n    }\n}\n/**\n * @param {?} elem\n * @param {?} axis\n * @param {?} isWindow\n * @return {?}\n */\nfunction getElementOffsetTop(elem, axis, isWindow) {\n    /** @type {?} */\n    const topKey = axis.topKey();\n    // elem = elem.nativeElement;\n    if (!elem.getBoundingClientRect) {\n        // || elem.css('none')) {\n        return;\n    }\n    return (elem.getBoundingClientRect()[topKey] +\n        getElementPageYOffset(elem, axis, isWindow));\n}\n/**\n * @param {?} elem\n * @param {?} axis\n * @param {?} isWindow\n * @return {?}\n */\nfunction getElementPageYOffset(elem, axis, isWindow) {\n    /** @type {?} */\n    const pageYOffset = axis.pageYOffsetKey();\n    /** @type {?} */\n    const scrollTop = axis.scrollTopKey();\n    /** @type {?} */\n    const offsetTop = axis.offsetTopKey();\n    if (isNaN(window[pageYOffset])) {\n        return getDocumentElement(isWindow, elem)[scrollTop];\n    }\n    else if (elem.ownerDocument) {\n        return elem.ownerDocument.defaultView[pageYOffset];\n    }\n    else {\n        return elem[offsetTop];\n    }\n}\n\n/**\n * @fileoverview added by tsickle\n * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc\n */\n/**\n * @param {?} container\n * @param {?} distance\n * @param {?} scrollingDown\n * @return {?}\n */\nfunction shouldFireScrollEvent(container, distance, scrollingDown) {\n    /** @type {?} */\n    let remaining;\n    /** @type {?} */\n    let containerBreakpoint;\n    if (container.totalToScroll <= 0) {\n        return false;\n    }\n    /** @type {?} */\n    const scrolledUntilNow = container.isWindow ? container.scrolled : container.height + container.scrolled;\n    if (scrollingDown) {\n        remaining =\n            (container.totalToScroll - scrolledUntilNow) / container.totalToScroll;\n        containerBreakpoint = distance.down / 10;\n    }\n    else {\n        /** @type {?} */\n        const totalHiddenContentHeight = container.scrolled + (container.totalToScroll - scrolledUntilNow);\n        remaining = container.scrolled / totalHiddenContentHeight;\n        containerBreakpoint = distance.up / 10;\n    }\n    /** @type {?} */\n    const shouldFireEvent = remaining <= containerBreakpoint;\n    return shouldFireEvent;\n}\n/**\n * @param {?} lastScrollPosition\n * @param {?} container\n * @return {?}\n */\nfunction isScrollingDownwards(lastScrollPosition, container) {\n    return lastScrollPosition < container.scrolled;\n}\n/**\n * @param {?} lastScrollPosition\n * @param {?} container\n * @param {?} distance\n * @return {?}\n */\nfunction getScrollStats(lastScrollPosition, container, distance) {\n    /** @type {?} */\n    const scrollDown = isScrollingDownwards(lastScrollPosition, container);\n    return {\n        fire: shouldFireScrollEvent(container, distance, scrollDown),\n        scrollDown\n    };\n}\n/**\n * @param {?} position\n * @param {?} scrollState\n * @return {?}\n */\n\n/**\n * @param {?} totalToScroll\n * @param {?} scrollState\n * @return {?}\n */\n\n/**\n * @param {?} scrollState\n * @return {?}\n */\n\n/**\n * @param {?} scroll\n * @param {?} scrollState\n * @param {?} triggered\n * @param {?} isScrollingDown\n * @return {?}\n */\n\n/**\n * @param {?} totalToScroll\n * @param {?} scrollState\n * @param {?} isScrollingDown\n * @return {?}\n */\n\n/**\n * @param {?} scrollState\n * @param {?} scrolledUntilNow\n * @param {?} totalToScroll\n * @return {?}\n */\n\n/**\n * @fileoverview added by tsickle\n * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc\n */\nclass ScrollState {\n    /**\n     * @param {?} __0\n     */\n    constructor({ totalToScroll }) {\n        this.lastScrollPosition = 0;\n        this.lastTotalToScroll = 0;\n        this.totalToScroll = 0;\n        this.triggered = {\n            down: 0,\n            up: 0\n        };\n        this.totalToScroll = totalToScroll;\n    }\n    /**\n     * @param {?} position\n     * @return {?}\n     */\n    updateScrollPosition(position) {\n        return (this.lastScrollPosition = position);\n    }\n    /**\n     * @param {?} totalToScroll\n     * @return {?}\n     */\n    updateTotalToScroll(totalToScroll) {\n        if (this.lastTotalToScroll !== totalToScroll) {\n            this.lastTotalToScroll = this.totalToScroll;\n            this.totalToScroll = totalToScroll;\n        }\n    }\n    /**\n     * @param {?} scrolledUntilNow\n     * @param {?} totalToScroll\n     * @return {?}\n     */\n    updateScroll(scrolledUntilNow, totalToScroll) {\n        this.updateScrollPosition(scrolledUntilNow);\n        this.updateTotalToScroll(totalToScroll);\n    }\n    /**\n     * @param {?} scroll\n     * @param {?} isScrollingDown\n     * @return {?}\n     */\n    updateTriggeredFlag(scroll, isScrollingDown) {\n        if (isScrollingDown) {\n            this.triggered.down = scroll;\n        }\n        else {\n            this.triggered.up = scroll;\n        }\n    }\n    /**\n     * @param {?} totalToScroll\n     * @param {?} isScrollingDown\n     * @return {?}\n     */\n    isTriggeredScroll(totalToScroll, isScrollingDown) {\n        return isScrollingDown\n            ? this.triggered.down === totalToScroll\n            : this.triggered.up === totalToScroll;\n    }\n}\n\n/**\n * @fileoverview added by tsickle\n * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc\n */\n/**\n * @param {?} config\n * @return {?}\n */\nfunction createScroller(config) {\n    const { scrollContainer, scrollWindow, element, fromRoot } = config;\n    /** @type {?} */\n    const resolver = createResolver({\n        axis: new AxisResolver(!config.horizontal),\n        windowElement: resolveContainerElement(scrollContainer, scrollWindow, element, fromRoot)\n    });\n    /** @type {?} */\n    const scrollState = new ScrollState({\n        totalToScroll: calculatePoints(element, resolver)\n    });\n    /** @type {?} */\n    const options = {\n        container: resolver.container,\n        throttle: config.throttle\n    };\n    /** @type {?} */\n    const distance = {\n        up: config.upDistance,\n        down: config.downDistance\n    };\n    return attachScrollEvent(options).pipe(mergeMap(() => of(calculatePoints(element, resolver))), map((positionStats) => toInfiniteScrollParams(scrollState.lastScrollPosition, positionStats, distance)), tap(({ stats }) => scrollState.updateScroll(stats.scrolled, stats.totalToScroll)), filter(({ fire, scrollDown, stats: { totalToScroll } }) => shouldTriggerEvents(config.alwaysCallback, fire, scrollState.isTriggeredScroll(totalToScroll, scrollDown))), tap(({ scrollDown, stats: { totalToScroll } }) => {\n        scrollState.updateTriggeredFlag(totalToScroll, scrollDown);\n    }), map(toInfiniteScrollAction));\n}\n/**\n * @param {?} options\n * @return {?}\n */\nfunction attachScrollEvent(options) {\n    /** @type {?} */\n    let obs = fromEvent(options.container, 'scroll');\n    // For an unknown reason calling `sampleTime()` causes trouble for many users, even with `options.throttle = 0`.\n    // Let's avoid calling the function unless needed.\n    // See https://github.com/orizens/ngx-infinite-scroll/issues/198\n    if (options.throttle) {\n        obs = obs.pipe(sampleTime(options.throttle));\n    }\n    return obs;\n}\n/**\n * @param {?} lastScrollPosition\n * @param {?} stats\n * @param {?} distance\n * @return {?}\n */\nfunction toInfiniteScrollParams(lastScrollPosition, stats, distance) {\n    const { scrollDown, fire } = getScrollStats(lastScrollPosition, stats, distance);\n    return {\n        scrollDown,\n        fire,\n        stats\n    };\n}\n/** @type {?} */\nconst InfiniteScrollActions = {\n    DOWN: '[NGX_ISE] DOWN',\n    UP: '[NGX_ISE] UP'\n};\n/**\n * @param {?} response\n * @return {?}\n */\nfunction toInfiniteScrollAction(response) {\n    const { scrollDown, stats: { scrolled: currentScrollPosition } } = response;\n    return {\n        type: scrollDown ? InfiniteScrollActions.DOWN : InfiniteScrollActions.UP,\n        payload: {\n            currentScrollPosition\n        }\n    };\n}\n\n/**\n * @fileoverview added by tsickle\n * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc\n */\nclass InfiniteScrollDirective {\n    /**\n     * @param {?} element\n     * @param {?} zone\n     */\n    constructor(element, zone) {\n        this.element = element;\n        this.zone = zone;\n        this.scrolled = new EventEmitter();\n        this.scrolledUp = new EventEmitter();\n        this.infiniteScrollDistance = 2;\n        this.infiniteScrollUpDistance = 1.5;\n        this.infiniteScrollThrottle = 150;\n        this.infiniteScrollDisabled = false;\n        this.infiniteScrollContainer = null;\n        this.scrollWindow = true;\n        this.immediateCheck = false;\n        this.horizontal = false;\n        this.alwaysCallback = false;\n        this.fromRoot = false;\n    }\n    /**\n     * @return {?}\n     */\n    ngAfterViewInit() {\n        if (!this.infiniteScrollDisabled) {\n            this.setup();\n        }\n    }\n    /**\n     * @param {?} __0\n     * @return {?}\n     */\n    ngOnChanges({ infiniteScrollContainer, infiniteScrollDisabled, infiniteScrollDistance }) {\n        /** @type {?} */\n        const containerChanged = inputPropChanged(infiniteScrollContainer);\n        /** @type {?} */\n        const disabledChanged = inputPropChanged(infiniteScrollDisabled);\n        /** @type {?} */\n        const distanceChanged = inputPropChanged(infiniteScrollDistance);\n        /** @type {?} */\n        const shouldSetup = (!disabledChanged && !this.infiniteScrollDisabled) ||\n            (disabledChanged && !infiniteScrollDisabled.currentValue) || distanceChanged;\n        if (containerChanged || disabledChanged || distanceChanged) {\n            this.destroyScroller();\n            if (shouldSetup) {\n                this.setup();\n            }\n        }\n    }\n    /**\n     * @return {?}\n     */\n    setup() {\n        if (hasWindowDefined()) {\n            this.zone.runOutsideAngular(() => {\n                this.disposeScroller = createScroller({\n                    fromRoot: this.fromRoot,\n                    alwaysCallback: this.alwaysCallback,\n                    disable: this.infiniteScrollDisabled,\n                    downDistance: this.infiniteScrollDistance,\n                    element: this.element,\n                    horizontal: this.horizontal,\n                    scrollContainer: this.infiniteScrollContainer,\n                    scrollWindow: this.scrollWindow,\n                    throttle: this.infiniteScrollThrottle,\n                    upDistance: this.infiniteScrollUpDistance\n                }).subscribe((payload) => this.zone.run(() => this.handleOnScroll(payload)));\n            });\n        }\n    }\n    /**\n     * @param {?} __0\n     * @return {?}\n     */\n    handleOnScroll({ type, payload }) {\n        switch (type) {\n            case InfiniteScrollActions.DOWN:\n                return this.scrolled.emit(payload);\n            case InfiniteScrollActions.UP:\n                return this.scrolledUp.emit(payload);\n            default:\n                return;\n        }\n    }\n    /**\n     * @return {?}\n     */\n    ngOnDestroy() {\n        this.destroyScroller();\n    }\n    /**\n     * @return {?}\n     */\n    destroyScroller() {\n        if (this.disposeScroller) {\n            this.disposeScroller.unsubscribe();\n        }\n    }\n}\nInfiniteScrollDirective.ɵfac = function InfiniteScrollDirective_Factory(t) { return new (t || InfiniteScrollDirective)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ElementRef), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.NgZone)); };\nInfiniteScrollDirective.ɵdir = /*@__PURE__*/ ɵngcc0.ɵɵdefineDirective({ type: InfiniteScrollDirective, selectors: [[\"\", \"infiniteScroll\", \"\"], [\"\", \"infinite-scroll\", \"\"], [\"\", \"data-infinite-scroll\", \"\"]], inputs: { infiniteScrollDistance: \"infiniteScrollDistance\", infiniteScrollUpDistance: \"infiniteScrollUpDistance\", infiniteScrollThrottle: \"infiniteScrollThrottle\", infiniteScrollDisabled: \"infiniteScrollDisabled\", infiniteScrollContainer: \"infiniteScrollContainer\", scrollWindow: \"scrollWindow\", immediateCheck: \"immediateCheck\", horizontal: \"horizontal\", alwaysCallback: \"alwaysCallback\", fromRoot: \"fromRoot\" }, outputs: { scrolled: \"scrolled\", scrolledUp: \"scrolledUp\" }, features: [ɵngcc0.ɵɵNgOnChangesFeature] });\n/** @nocollapse */\nInfiniteScrollDirective.ctorParameters = () => [\n    { type: ElementRef },\n    { type: NgZone }\n];\nInfiniteScrollDirective.propDecorators = {\n    scrolled: [{ type: Output }],\n    scrolledUp: [{ type: Output }],\n    infiniteScrollDistance: [{ type: Input }],\n    infiniteScrollUpDistance: [{ type: Input }],\n    infiniteScrollThrottle: [{ type: Input }],\n    infiniteScrollDisabled: [{ type: Input }],\n    infiniteScrollContainer: [{ type: Input }],\n    scrollWindow: [{ type: Input }],\n    immediateCheck: [{ type: Input }],\n    horizontal: [{ type: Input }],\n    alwaysCallback: [{ type: Input }],\n    fromRoot: [{ type: Input }]\n};\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(InfiniteScrollDirective, [{\n        type: Directive,\n        args: [{\n                selector: '[infiniteScroll], [infinite-scroll], [data-infinite-scroll]'\n            }]\n    }], function () { return [{ type: ɵngcc0.ElementRef }, { type: ɵngcc0.NgZone }]; }, { scrolled: [{\n            type: Output\n        }], scrolledUp: [{\n            type: Output\n        }], infiniteScrollDistance: [{\n            type: Input\n        }], infiniteScrollUpDistance: [{\n            type: Input\n        }], infiniteScrollThrottle: [{\n            type: Input\n        }], infiniteScrollDisabled: [{\n            type: Input\n        }], infiniteScrollContainer: [{\n            type: Input\n        }], scrollWindow: [{\n            type: Input\n        }], immediateCheck: [{\n            type: Input\n        }], horizontal: [{\n            type: Input\n        }], alwaysCallback: [{\n            type: Input\n        }], fromRoot: [{\n            type: Input\n        }] }); })();\n\n/**\n * @fileoverview added by tsickle\n * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc\n */\nclass InfiniteScrollModule {\n}\nInfiniteScrollModule.ɵfac = function InfiniteScrollModule_Factory(t) { return new (t || InfiniteScrollModule)(); };\nInfiniteScrollModule.ɵmod = /*@__PURE__*/ ɵngcc0.ɵɵdefineNgModule({ type: InfiniteScrollModule });\nInfiniteScrollModule.ɵinj = /*@__PURE__*/ ɵngcc0.ɵɵdefineInjector({});\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && ɵngcc0.ɵsetClassMetadata(InfiniteScrollModule, [{\n        type: NgModule,\n        args: [{\n                declarations: [InfiniteScrollDirective],\n                exports: [InfiniteScrollDirective],\n                imports: [],\n                providers: []\n            }]\n    }], null, null); })();\n(function () { (typeof ngJitMode === \"undefined\" || ngJitMode) && ɵngcc0.ɵɵsetNgModuleScope(InfiniteScrollModule, { declarations: [InfiniteScrollDirective], exports: [InfiniteScrollDirective] }); })();\n\n/**\n * @fileoverview added by tsickle\n * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc\n */\n\n/**\n * @fileoverview added by tsickle\n * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc\n */\n/**\n * Angular library starter.\n * Build an Angular library compatible with AoT compilation & Tree shaking.\n * Written by Roberto Simonetti.\n * MIT license.\n * https://github.com/robisim74/angular-library-starter\n */\n/**\n * Entry point for all public APIs of the package.\n */\n\n/**\n * @fileoverview added by tsickle\n * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc\n */\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { InfiniteScrollDirective, InfiniteScrollModule };\n\n","import { Subject } from './Subject';\nimport { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError';\nexport class BehaviorSubject extends Subject {\n    constructor(_value) {\n        super();\n        this._value = _value;\n    }\n    get value() {\n        return this.getValue();\n    }\n    _subscribe(subscriber) {\n        const subscription = super._subscribe(subscriber);\n        if (subscription && !subscription.closed) {\n            subscriber.next(this._value);\n        }\n        return subscription;\n    }\n    getValue() {\n        if (this.hasError) {\n            throw this.thrownError;\n        }\n        else if (this.closed) {\n            throw new ObjectUnsubscribedError();\n        }\n        else {\n            return this._value;\n        }\n    }\n    next(value) {\n        super.next(this._value = value);\n    }\n}\n","import { canReportError } from './util/canReportError';\nimport { toSubscriber } from './util/toSubscriber';\nimport { observable as Symbol_observable } from './symbol/observable';\nimport { pipeFromArray } from './util/pipe';\nimport { config } from './config';\nexport class Observable {\n    constructor(subscribe) {\n        this._isScalar = false;\n        if (subscribe) {\n            this._subscribe = subscribe;\n        }\n    }\n    lift(operator) {\n        const observable = new Observable();\n        observable.source = this;\n        observable.operator = operator;\n        return observable;\n    }\n    subscribe(observerOrNext, error, complete) {\n        const { operator } = this;\n        const sink = toSubscriber(observerOrNext, error, complete);\n        if (operator) {\n            sink.add(operator.call(sink, this.source));\n        }\n        else {\n            sink.add(this.source || (config.useDeprecatedSynchronousErrorHandling && !sink.syncErrorThrowable) ?\n                this._subscribe(sink) :\n                this._trySubscribe(sink));\n        }\n        if (config.useDeprecatedSynchronousErrorHandling) {\n            if (sink.syncErrorThrowable) {\n                sink.syncErrorThrowable = false;\n                if (sink.syncErrorThrown) {\n                    throw sink.syncErrorValue;\n                }\n            }\n        }\n        return sink;\n    }\n    _trySubscribe(sink) {\n        try {\n            return this._subscribe(sink);\n        }\n        catch (err) {\n            if (config.useDeprecatedSynchronousErrorHandling) {\n                sink.syncErrorThrown = true;\n                sink.syncErrorValue = err;\n            }\n            if (canReportError(sink)) {\n                sink.error(err);\n            }\n            else {\n                console.warn(err);\n            }\n        }\n    }\n    forEach(next, promiseCtor) {\n        promiseCtor = getPromiseCtor(promiseCtor);\n        return new promiseCtor((resolve, reject) => {\n            let subscription;\n            subscription = this.subscribe((value) => {\n                try {\n                    next(value);\n                }\n                catch (err) {\n                    reject(err);\n                    if (subscription) {\n                        subscription.unsubscribe();\n                    }\n                }\n            }, reject, resolve);\n        });\n    }\n    _subscribe(subscriber) {\n        const { source } = this;\n        return source && source.subscribe(subscriber);\n    }\n    [Symbol_observable]() {\n        return this;\n    }\n    pipe(...operations) {\n        if (operations.length === 0) {\n            return this;\n        }\n        return pipeFromArray(operations)(this);\n    }\n    toPromise(promiseCtor) {\n        promiseCtor = getPromiseCtor(promiseCtor);\n        return new promiseCtor((resolve, reject) => {\n            let value;\n            this.subscribe((x) => value = x, (err) => reject(err), () => resolve(value));\n        });\n    }\n}\nObservable.create = (subscribe) => {\n    return new Observable(subscribe);\n};\nfunction getPromiseCtor(promiseCtor) {\n    if (!promiseCtor) {\n        promiseCtor = config.Promise || Promise;\n    }\n    if (!promiseCtor) {\n        throw new Error('no Promise impl found');\n    }\n    return promiseCtor;\n}\n","import { Subscriber } from '../Subscriber';\nimport { rxSubscriber as rxSubscriberSymbol } from '../symbol/rxSubscriber';\nimport { empty as emptyObserver } from '../Observer';\nexport function toSubscriber(nextOrObserver, error, complete) {\n    if (nextOrObserver) {\n        if (nextOrObserver instanceof Subscriber) {\n            return nextOrObserver;\n        }\n        if (nextOrObserver[rxSubscriberSymbol]) {\n            return nextOrObserver[rxSubscriberSymbol]();\n        }\n    }\n    if (!nextOrObserver && !error && !complete) {\n        return new Subscriber(emptyObserver);\n    }\n    return new Subscriber(nextOrObserver, error, complete);\n}\n","import { Subscriber } from '../Subscriber';\nexport function canReportError(observer) {\n    while (observer) {\n        const { closed, destination, isStopped } = observer;\n        if (closed || isStopped) {\n            return false;\n        }\n        else if (destination && destination instanceof Subscriber) {\n            observer = destination;\n        }\n        else {\n            observer = null;\n        }\n    }\n    return true;\n}\n","import { config } from './config';\nimport { hostReportError } from './util/hostReportError';\nexport const empty = {\n    closed: true,\n    next(value) { },\n    error(err) {\n        if (config.useDeprecatedSynchronousErrorHandling) {\n            throw err;\n        }\n        else {\n            hostReportError(err);\n        }\n    },\n    complete() { }\n};\n","import { Observable } from './Observable';\nimport { Subscriber } from './Subscriber';\nimport { Subscription } from './Subscription';\nimport { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError';\nimport { SubjectSubscription } from './SubjectSubscription';\nimport { rxSubscriber as rxSubscriberSymbol } from '../internal/symbol/rxSubscriber';\nexport class SubjectSubscriber extends Subscriber {\n    constructor(destination) {\n        super(destination);\n        this.destination = destination;\n    }\n}\nexport class Subject extends Observable {\n    constructor() {\n        super();\n        this.observers = [];\n        this.closed = false;\n        this.isStopped = false;\n        this.hasError = false;\n        this.thrownError = null;\n    }\n    [rxSubscriberSymbol]() {\n        return new SubjectSubscriber(this);\n    }\n    lift(operator) {\n        const subject = new AnonymousSubject(this, this);\n        subject.operator = operator;\n        return subject;\n    }\n    next(value) {\n        if (this.closed) {\n            throw new ObjectUnsubscribedError();\n        }\n        if (!this.isStopped) {\n            const { observers } = this;\n            const len = observers.length;\n            const copy = observers.slice();\n            for (let i = 0; i < len; i++) {\n                copy[i].next(value);\n            }\n        }\n    }\n    error(err) {\n        if (this.closed) {\n            throw new ObjectUnsubscribedError();\n        }\n        this.hasError = true;\n        this.thrownError = err;\n        this.isStopped = true;\n        const { observers } = this;\n        const len = observers.length;\n        const copy = observers.slice();\n        for (let i = 0; i < len; i++) {\n            copy[i].error(err);\n        }\n        this.observers.length = 0;\n    }\n    complete() {\n        if (this.closed) {\n            throw new ObjectUnsubscribedError();\n        }\n        this.isStopped = true;\n        const { observers } = this;\n        const len = observers.length;\n        const copy = observers.slice();\n        for (let i = 0; i < len; i++) {\n            copy[i].complete();\n        }\n        this.observers.length = 0;\n    }\n    unsubscribe() {\n        this.isStopped = true;\n        this.closed = true;\n        this.observers = null;\n    }\n    _trySubscribe(subscriber) {\n        if (this.closed) {\n            throw new ObjectUnsubscribedError();\n        }\n        else {\n            return super._trySubscribe(subscriber);\n        }\n    }\n    _subscribe(subscriber) {\n        if (this.closed) {\n            throw new ObjectUnsubscribedError();\n        }\n        else if (this.hasError) {\n            subscriber.error(this.thrownError);\n            return Subscription.EMPTY;\n        }\n        else if (this.isStopped) {\n            subscriber.complete();\n            return Subscription.EMPTY;\n        }\n        else {\n            this.observers.push(subscriber);\n            return new SubjectSubscription(this, subscriber);\n        }\n    }\n    asObservable() {\n        const observable = new Observable();\n        observable.source = this;\n        return observable;\n    }\n}\nSubject.create = (destination, source) => {\n    return new AnonymousSubject(destination, source);\n};\nexport class AnonymousSubject extends Subject {\n    constructor(destination, source) {\n        super();\n        this.destination = destination;\n        this.source = source;\n    }\n    next(value) {\n        const { destination } = this;\n        if (destination && destination.next) {\n            destination.next(value);\n        }\n    }\n    error(err) {\n        const { destination } = this;\n        if (destination && destination.error) {\n            this.destination.error(err);\n        }\n    }\n    complete() {\n        const { destination } = this;\n        if (destination && destination.complete) {\n            this.destination.complete();\n        }\n    }\n    _subscribe(subscriber) {\n        const { source } = this;\n        if (source) {\n            return this.source.subscribe(subscriber);\n        }\n        else {\n            return Subscription.EMPTY;\n        }\n    }\n}\n","import { Subscription } from './Subscription';\nexport class SubjectSubscription extends Subscription {\n    constructor(subject, subscriber) {\n        super();\n        this.subject = subject;\n        this.subscriber = subscriber;\n        this.closed = false;\n    }\n    unsubscribe() {\n        if (this.closed) {\n            return;\n        }\n        this.closed = true;\n        const subject = this.subject;\n        const observers = subject.observers;\n        this.subject = null;\n        if (!observers || observers.length === 0 || subject.isStopped || subject.closed) {\n            return;\n        }\n        const subscriberIndex = observers.indexOf(this.subscriber);\n        if (subscriberIndex !== -1) {\n            observers.splice(subscriberIndex, 1);\n        }\n    }\n}\n","import { isFunction } from './util/isFunction';\nimport { empty as emptyObserver } from './Observer';\nimport { Subscription } from './Subscription';\nimport { rxSubscriber as rxSubscriberSymbol } from '../internal/symbol/rxSubscriber';\nimport { config } from './config';\nimport { hostReportError } from './util/hostReportError';\nexport class Subscriber extends Subscription {\n    constructor(destinationOrNext, error, complete) {\n        super();\n        this.syncErrorValue = null;\n        this.syncErrorThrown = false;\n        this.syncErrorThrowable = false;\n        this.isStopped = false;\n        switch (arguments.length) {\n            case 0:\n                this.destination = emptyObserver;\n                break;\n            case 1:\n                if (!destinationOrNext) {\n                    this.destination = emptyObserver;\n                    break;\n                }\n                if (typeof destinationOrNext === 'object') {\n                    if (destinationOrNext instanceof Subscriber) {\n                        this.syncErrorThrowable = destinationOrNext.syncErrorThrowable;\n                        this.destination = destinationOrNext;\n                        destinationOrNext.add(this);\n                    }\n                    else {\n                        this.syncErrorThrowable = true;\n                        this.destination = new SafeSubscriber(this, destinationOrNext);\n                    }\n                    break;\n                }\n            default:\n                this.syncErrorThrowable = true;\n                this.destination = new SafeSubscriber(this, destinationOrNext, error, complete);\n                break;\n        }\n    }\n    [rxSubscriberSymbol]() { return this; }\n    static create(next, error, complete) {\n        const subscriber = new Subscriber(next, error, complete);\n        subscriber.syncErrorThrowable = false;\n        return subscriber;\n    }\n    next(value) {\n        if (!this.isStopped) {\n            this._next(value);\n        }\n    }\n    error(err) {\n        if (!this.isStopped) {\n            this.isStopped = true;\n            this._error(err);\n        }\n    }\n    complete() {\n        if (!this.isStopped) {\n            this.isStopped = true;\n            this._complete();\n        }\n    }\n    unsubscribe() {\n        if (this.closed) {\n            return;\n        }\n        this.isStopped = true;\n        super.unsubscribe();\n    }\n    _next(value) {\n        this.destination.next(value);\n    }\n    _error(err) {\n        this.destination.error(err);\n        this.unsubscribe();\n    }\n    _complete() {\n        this.destination.complete();\n        this.unsubscribe();\n    }\n    _unsubscribeAndRecycle() {\n        const { _parentOrParents } = this;\n        this._parentOrParents = null;\n        this.unsubscribe();\n        this.closed = false;\n        this.isStopped = false;\n        this._parentOrParents = _parentOrParents;\n        return this;\n    }\n}\nexport class SafeSubscriber extends Subscriber {\n    constructor(_parentSubscriber, observerOrNext, error, complete) {\n        super();\n        this._parentSubscriber = _parentSubscriber;\n        let next;\n        let context = this;\n        if (isFunction(observerOrNext)) {\n            next = observerOrNext;\n        }\n        else if (observerOrNext) {\n            next = observerOrNext.next;\n            error = observerOrNext.error;\n            complete = observerOrNext.complete;\n            if (observerOrNext !== emptyObserver) {\n                context = Object.create(observerOrNext);\n                if (isFunction(context.unsubscribe)) {\n                    this.add(context.unsubscribe.bind(context));\n                }\n                context.unsubscribe = this.unsubscribe.bind(this);\n            }\n        }\n        this._context = context;\n        this._next = next;\n        this._error = error;\n        this._complete = complete;\n    }\n    next(value) {\n        if (!this.isStopped && this._next) {\n            const { _parentSubscriber } = this;\n            if (!config.useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) {\n                this.__tryOrUnsub(this._next, value);\n            }\n            else if (this.__tryOrSetError(_parentSubscriber, this._next, value)) {\n                this.unsubscribe();\n            }\n        }\n    }\n    error(err) {\n        if (!this.isStopped) {\n            const { _parentSubscriber } = this;\n            const { useDeprecatedSynchronousErrorHandling } = config;\n            if (this._error) {\n                if (!useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) {\n                    this.__tryOrUnsub(this._error, err);\n                    this.unsubscribe();\n                }\n                else {\n                    this.__tryOrSetError(_parentSubscriber, this._error, err);\n                    this.unsubscribe();\n                }\n            }\n            else if (!_parentSubscriber.syncErrorThrowable) {\n                this.unsubscribe();\n                if (useDeprecatedSynchronousErrorHandling) {\n                    throw err;\n                }\n                hostReportError(err);\n            }\n            else {\n                if (useDeprecatedSynchronousErrorHandling) {\n                    _parentSubscriber.syncErrorValue = err;\n                    _parentSubscriber.syncErrorThrown = true;\n                }\n                else {\n                    hostReportError(err);\n                }\n                this.unsubscribe();\n            }\n        }\n    }\n    complete() {\n        if (!this.isStopped) {\n            const { _parentSubscriber } = this;\n            if (this._complete) {\n                const wrappedComplete = () => this._complete.call(this._context);\n                if (!config.useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) {\n                    this.__tryOrUnsub(wrappedComplete);\n                    this.unsubscribe();\n                }\n                else {\n                    this.__tryOrSetError(_parentSubscriber, wrappedComplete);\n                    this.unsubscribe();\n                }\n            }\n            else {\n                this.unsubscribe();\n            }\n        }\n    }\n    __tryOrUnsub(fn, value) {\n        try {\n            fn.call(this._context, value);\n        }\n        catch (err) {\n            this.unsubscribe();\n            if (config.useDeprecatedSynchronousErrorHandling) {\n                throw err;\n            }\n            else {\n                hostReportError(err);\n            }\n        }\n    }\n    __tryOrSetError(parent, fn, value) {\n        if (!config.useDeprecatedSynchronousErrorHandling) {\n            throw new Error('bad call');\n        }\n        try {\n            fn.call(this._context, value);\n        }\n        catch (err) {\n            if (config.useDeprecatedSynchronousErrorHandling) {\n                parent.syncErrorValue = err;\n                parent.syncErrorThrown = true;\n                return true;\n            }\n            else {\n                hostReportError(err);\n                return true;\n            }\n        }\n        return false;\n    }\n    _unsubscribe() {\n        const { _parentSubscriber } = this;\n        this._context = null;\n        this._parentSubscriber = null;\n        _parentSubscriber.unsubscribe();\n    }\n}\n","const UnsubscriptionErrorImpl = (() => {\n    function UnsubscriptionErrorImpl(errors) {\n        Error.call(this);\n        this.message = errors ?\n            `${errors.length} errors occurred during unsubscription:\n${errors.map((err, i) => `${i + 1}) ${err.toString()}`).join('\\n  ')}` : '';\n        this.name = 'UnsubscriptionError';\n        this.errors = errors;\n        return this;\n    }\n    UnsubscriptionErrorImpl.prototype = Object.create(Error.prototype);\n    return UnsubscriptionErrorImpl;\n})();\nexport const UnsubscriptionError = UnsubscriptionErrorImpl;\n","import { isArray } from './util/isArray';\nimport { isObject } from './util/isObject';\nimport { isFunction } from './util/isFunction';\nimport { UnsubscriptionError } from './util/UnsubscriptionError';\nexport class Subscription {\n    constructor(unsubscribe) {\n        this.closed = false;\n        this._parentOrParents = null;\n        this._subscriptions = null;\n        if (unsubscribe) {\n            this._ctorUnsubscribe = true;\n            this._unsubscribe = unsubscribe;\n        }\n    }\n    unsubscribe() {\n        let errors;\n        if (this.closed) {\n            return;\n        }\n        let { _parentOrParents, _ctorUnsubscribe, _unsubscribe, _subscriptions } = this;\n        this.closed = true;\n        this._parentOrParents = null;\n        this._subscriptions = null;\n        if (_parentOrParents instanceof Subscription) {\n            _parentOrParents.remove(this);\n        }\n        else if (_parentOrParents !== null) {\n            for (let index = 0; index < _parentOrParents.length; ++index) {\n                const parent = _parentOrParents[index];\n                parent.remove(this);\n            }\n        }\n        if (isFunction(_unsubscribe)) {\n            if (_ctorUnsubscribe) {\n                this._unsubscribe = undefined;\n            }\n            try {\n                _unsubscribe.call(this);\n            }\n            catch (e) {\n                errors = e instanceof UnsubscriptionError ? flattenUnsubscriptionErrors(e.errors) : [e];\n            }\n        }\n        if (isArray(_subscriptions)) {\n            let index = -1;\n            let len = _subscriptions.length;\n            while (++index < len) {\n                const sub = _subscriptions[index];\n                if (isObject(sub)) {\n                    try {\n                        sub.unsubscribe();\n                    }\n                    catch (e) {\n                        errors = errors || [];\n                        if (e instanceof UnsubscriptionError) {\n                            errors = errors.concat(flattenUnsubscriptionErrors(e.errors));\n                        }\n                        else {\n                            errors.push(e);\n                        }\n                    }\n                }\n            }\n        }\n        if (errors) {\n            throw new UnsubscriptionError(errors);\n        }\n    }\n    add(teardown) {\n        let subscription = teardown;\n        if (!teardown) {\n            return Subscription.EMPTY;\n        }\n        switch (typeof teardown) {\n            case 'function':\n                subscription = new Subscription(teardown);\n            case 'object':\n                if (subscription === this || subscription.closed || typeof subscription.unsubscribe !== 'function') {\n                    return subscription;\n                }\n                else if (this.closed) {\n                    subscription.unsubscribe();\n                    return subscription;\n                }\n                else if (!(subscription instanceof Subscription)) {\n                    const tmp = subscription;\n                    subscription = new Subscription();\n                    subscription._subscriptions = [tmp];\n                }\n                break;\n            default: {\n                throw new Error('unrecognized teardown ' + teardown + ' added to Subscription.');\n            }\n        }\n        let { _parentOrParents } = subscription;\n        if (_parentOrParents === null) {\n            subscription._parentOrParents = this;\n        }\n        else if (_parentOrParents instanceof Subscription) {\n            if (_parentOrParents === this) {\n                return subscription;\n            }\n            subscription._parentOrParents = [_parentOrParents, this];\n        }\n        else if (_parentOrParents.indexOf(this) === -1) {\n            _parentOrParents.push(this);\n        }\n        else {\n            return subscription;\n        }\n        const subscriptions = this._subscriptions;\n        if (subscriptions === null) {\n            this._subscriptions = [subscription];\n        }\n        else {\n            subscriptions.push(subscription);\n        }\n        return subscription;\n    }\n    remove(subscription) {\n        const subscriptions = this._subscriptions;\n        if (subscriptions) {\n            const subscriptionIndex = subscriptions.indexOf(subscription);\n            if (subscriptionIndex !== -1) {\n                subscriptions.splice(subscriptionIndex, 1);\n            }\n        }\n    }\n}\nSubscription.EMPTY = (function (empty) {\n    empty.closed = true;\n    return empty;\n}(new Subscription()));\nfunction flattenUnsubscriptionErrors(errors) {\n    return errors.reduce((errs, err) => errs.concat((err instanceof UnsubscriptionError) ? err.errors : err), []);\n}\n","let _enable_super_gross_mode_that_will_cause_bad_things = false;\nexport const config = {\n    Promise: undefined,\n    set useDeprecatedSynchronousErrorHandling(value) {\n        if (value) {\n            const error = new Error();\n            console.warn('DEPRECATED! RxJS was set to use deprecated synchronous error handling behavior by code at: \\n' + error.stack);\n        }\n        else if (_enable_super_gross_mode_that_will_cause_bad_things) {\n            console.log('RxJS: Back to a better error behavior. Thank you. <3');\n        }\n        _enable_super_gross_mode_that_will_cause_bad_things = value;\n    },\n    get useDeprecatedSynchronousErrorHandling() {\n        return _enable_super_gross_mode_that_will_cause_bad_things;\n    },\n};\n","import { Subscriber } from './Subscriber';\nimport { Observable } from './Observable';\nimport { subscribeTo } from './util/subscribeTo';\nexport class SimpleInnerSubscriber extends Subscriber {\n    constructor(parent) {\n        super();\n        this.parent = parent;\n    }\n    _next(value) {\n        this.parent.notifyNext(value);\n    }\n    _error(error) {\n        this.parent.notifyError(error);\n        this.unsubscribe();\n    }\n    _complete() {\n        this.parent.notifyComplete();\n        this.unsubscribe();\n    }\n}\nexport class ComplexInnerSubscriber extends Subscriber {\n    constructor(parent, outerValue, outerIndex) {\n        super();\n        this.parent = parent;\n        this.outerValue = outerValue;\n        this.outerIndex = outerIndex;\n    }\n    _next(value) {\n        this.parent.notifyNext(this.outerValue, value, this.outerIndex, this);\n    }\n    _error(error) {\n        this.parent.notifyError(error);\n        this.unsubscribe();\n    }\n    _complete() {\n        this.parent.notifyComplete(this);\n        this.unsubscribe();\n    }\n}\nexport class SimpleOuterSubscriber extends Subscriber {\n    notifyNext(innerValue) {\n        this.destination.next(innerValue);\n    }\n    notifyError(err) {\n        this.destination.error(err);\n    }\n    notifyComplete() {\n        this.destination.complete();\n    }\n}\nexport class ComplexOuterSubscriber extends Subscriber {\n    notifyNext(_outerValue, innerValue, _outerIndex, _innerSub) {\n        this.destination.next(innerValue);\n    }\n    notifyError(error) {\n        this.destination.error(error);\n    }\n    notifyComplete(_innerSub) {\n        this.destination.complete();\n    }\n}\nexport function innerSubscribe(result, innerSubscriber) {\n    if (innerSubscriber.closed) {\n        return undefined;\n    }\n    if (result instanceof Observable) {\n        return result.subscribe(innerSubscriber);\n    }\n    let subscription;\n    try {\n        subscription = subscribeTo(result)(innerSubscriber);\n    }\n    catch (error) {\n        innerSubscriber.error(error);\n    }\n    return subscription;\n}\n","import { SubjectSubscriber } from '../Subject';\nimport { Observable } from '../Observable';\nimport { Subscriber } from '../Subscriber';\nimport { Subscription } from '../Subscription';\nimport { refCount as higherOrderRefCount } from '../operators/refCount';\nexport class ConnectableObservable extends Observable {\n    constructor(source, subjectFactory) {\n        super();\n        this.source = source;\n        this.subjectFactory = subjectFactory;\n        this._refCount = 0;\n        this._isComplete = false;\n    }\n    _subscribe(subscriber) {\n        return this.getSubject().subscribe(subscriber);\n    }\n    getSubject() {\n        const subject = this._subject;\n        if (!subject || subject.isStopped) {\n            this._subject = this.subjectFactory();\n        }\n        return this._subject;\n    }\n    connect() {\n        let connection = this._connection;\n        if (!connection) {\n            this._isComplete = false;\n            connection = this._connection = new Subscription();\n            connection.add(this.source\n                .subscribe(new ConnectableSubscriber(this.getSubject(), this)));\n            if (connection.closed) {\n                this._connection = null;\n                connection = Subscription.EMPTY;\n            }\n        }\n        return connection;\n    }\n    refCount() {\n        return higherOrderRefCount()(this);\n    }\n}\nexport const connectableObservableDescriptor = (() => {\n    const connectableProto = ConnectableObservable.prototype;\n    return {\n        operator: { value: null },\n        _refCount: { value: 0, writable: true },\n        _subject: { value: null, writable: true },\n        _connection: { value: null, writable: true },\n        _subscribe: { value: connectableProto._subscribe },\n        _isComplete: { value: connectableProto._isComplete, writable: true },\n        getSubject: { value: connectableProto.getSubject },\n        connect: { value: connectableProto.connect },\n        refCount: { value: connectableProto.refCount }\n    };\n})();\nclass ConnectableSubscriber extends SubjectSubscriber {\n    constructor(destination, connectable) {\n        super(destination);\n        this.connectable = connectable;\n    }\n    _error(err) {\n        this._unsubscribe();\n        super._error(err);\n    }\n    _complete() {\n        this.connectable._isComplete = true;\n        this._unsubscribe();\n        super._complete();\n    }\n    _unsubscribe() {\n        const connectable = this.connectable;\n        if (connectable) {\n            this.connectable = null;\n            const connection = connectable._connection;\n            connectable._refCount = 0;\n            connectable._subject = null;\n            connectable._connection = null;\n            if (connection) {\n                connection.unsubscribe();\n            }\n        }\n    }\n}\nclass RefCountOperator {\n    constructor(connectable) {\n        this.connectable = connectable;\n    }\n    call(subscriber, source) {\n        const { connectable } = this;\n        connectable._refCount++;\n        const refCounter = new RefCountSubscriber(subscriber, connectable);\n        const subscription = source.subscribe(refCounter);\n        if (!refCounter.closed) {\n            refCounter.connection = connectable.connect();\n        }\n        return subscription;\n    }\n}\nclass RefCountSubscriber extends Subscriber {\n    constructor(destination, connectable) {\n        super(destination);\n        this.connectable = connectable;\n    }\n    _unsubscribe() {\n        const { connectable } = this;\n        if (!connectable) {\n            this.connection = null;\n            return;\n        }\n        this.connectable = null;\n        const refCount = connectable._refCount;\n        if (refCount <= 0) {\n            this.connection = null;\n            return;\n        }\n        connectable._refCount = refCount - 1;\n        if (refCount > 1) {\n            this.connection = null;\n            return;\n        }\n        const { connection } = this;\n        const sharedConnection = connectable._connection;\n        this.connection = null;\n        if (sharedConnection && (!connection || sharedConnection === connection)) {\n            sharedConnection.unsubscribe();\n        }\n    }\n}\n","import { Subscriber } from './Subscriber';\nexport class OuterSubscriber extends Subscriber {\n    notifyNext(outerValue, innerValue, outerIndex, innerIndex, innerSub) {\n        this.destination.next(innerValue);\n    }\n    notifyError(error, innerSub) {\n        this.destination.error(error);\n    }\n    notifyComplete(innerSub) {\n        this.destination.complete();\n    }\n}\n","import { Subscriber } from './Subscriber';\nexport class InnerSubscriber extends Subscriber {\n    constructor(parent, outerValue, outerIndex) {\n        super();\n        this.parent = parent;\n        this.outerValue = outerValue;\n        this.outerIndex = outerIndex;\n        this.index = 0;\n    }\n    _next(value) {\n        this.parent.notifyNext(this.outerValue, value, this.outerIndex, this.index++, this);\n    }\n    _error(error) {\n        this.parent.notifyError(error, this);\n        this.unsubscribe();\n    }\n    _complete() {\n        this.parent.notifyComplete(this);\n        this.unsubscribe();\n    }\n}\n","import { InnerSubscriber } from '../InnerSubscriber';\nimport { subscribeTo } from './subscribeTo';\nimport { Observable } from '../Observable';\nexport function subscribeToResult(outerSubscriber, result, outerValue, outerIndex, innerSubscriber = new InnerSubscriber(outerSubscriber, outerValue, outerIndex)) {\n    if (innerSubscriber.closed) {\n        return undefined;\n    }\n    if (result instanceof Observable) {\n        return result.subscribe(innerSubscriber);\n    }\n    return subscribeTo(result)(innerSubscriber);\n}\n","import { isScheduler } from '../util/isScheduler';\nimport { isArray } from '../util/isArray';\nimport { OuterSubscriber } from '../OuterSubscriber';\nimport { subscribeToResult } from '../util/subscribeToResult';\nimport { fromArray } from './fromArray';\nconst NONE = {};\nexport function combineLatest(...observables) {\n    let resultSelector = undefined;\n    let scheduler = undefined;\n    if (isScheduler(observables[observables.length - 1])) {\n        scheduler = observables.pop();\n    }\n    if (typeof observables[observables.length - 1] === 'function') {\n        resultSelector = observables.pop();\n    }\n    if (observables.length === 1 && isArray(observables[0])) {\n        observables = observables[0];\n    }\n    return fromArray(observables, scheduler).lift(new CombineLatestOperator(resultSelector));\n}\nexport class CombineLatestOperator {\n    constructor(resultSelector) {\n        this.resultSelector = resultSelector;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new CombineLatestSubscriber(subscriber, this.resultSelector));\n    }\n}\nexport class CombineLatestSubscriber extends OuterSubscriber {\n    constructor(destination, resultSelector) {\n        super(destination);\n        this.resultSelector = resultSelector;\n        this.active = 0;\n        this.values = [];\n        this.observables = [];\n    }\n    _next(observable) {\n        this.values.push(NONE);\n        this.observables.push(observable);\n    }\n    _complete() {\n        const observables = this.observables;\n        const len = observables.length;\n        if (len === 0) {\n            this.destination.complete();\n        }\n        else {\n            this.active = len;\n            this.toRespond = len;\n            for (let i = 0; i < len; i++) {\n                const observable = observables[i];\n                this.add(subscribeToResult(this, observable, undefined, i));\n            }\n        }\n    }\n    notifyComplete(unused) {\n        if ((this.active -= 1) === 0) {\n            this.destination.complete();\n        }\n    }\n    notifyNext(_outerValue, innerValue, outerIndex) {\n        const values = this.values;\n        const oldVal = values[outerIndex];\n        const toRespond = !this.toRespond\n            ? 0\n            : oldVal === NONE ? --this.toRespond : this.toRespond;\n        values[outerIndex] = innerValue;\n        if (toRespond === 0) {\n            if (this.resultSelector) {\n                this._tryResultSelector(values);\n            }\n            else {\n                this.destination.next(values.slice());\n            }\n        }\n    }\n    _tryResultSelector(values) {\n        let result;\n        try {\n            result = this.resultSelector.apply(this, values);\n        }\n        catch (err) {\n            this.destination.error(err);\n            return;\n        }\n        this.destination.next(result);\n    }\n}\n","import { of } from './of';\nimport { concatAll } from '../operators/concatAll';\nexport function concat(...observables) {\n    return concatAll()(of(...observables));\n}\n","import { mergeAll } from './mergeAll';\nexport function concatAll() {\n    return mergeAll(1);\n}\n","import { Observable } from '../Observable';\nexport const EMPTY = new Observable(subscriber => subscriber.complete());\nexport function empty(scheduler) {\n    return scheduler ? emptyScheduled(scheduler) : EMPTY;\n}\nfunction emptyScheduled(scheduler) {\n    return new Observable(subscriber => scheduler.schedule(() => subscriber.complete()));\n}\n","import { Observable } from '../Observable';\nimport { isArray } from '../util/isArray';\nimport { map } from '../operators/map';\nimport { isObject } from '../util/isObject';\nimport { from } from './from';\nexport function forkJoin(...sources) {\n    if (sources.length === 1) {\n        const first = sources[0];\n        if (isArray(first)) {\n            return forkJoinInternal(first, null);\n        }\n        if (isObject(first) && Object.getPrototypeOf(first) === Object.prototype) {\n            const keys = Object.keys(first);\n            return forkJoinInternal(keys.map(key => first[key]), keys);\n        }\n    }\n    if (typeof sources[sources.length - 1] === 'function') {\n        const resultSelector = sources.pop();\n        sources = (sources.length === 1 && isArray(sources[0])) ? sources[0] : sources;\n        return forkJoinInternal(sources, null).pipe(map((args) => resultSelector(...args)));\n    }\n    return forkJoinInternal(sources, null);\n}\nfunction forkJoinInternal(sources, keys) {\n    return new Observable(subscriber => {\n        const len = sources.length;\n        if (len === 0) {\n            subscriber.complete();\n            return;\n        }\n        const values = new Array(len);\n        let completed = 0;\n        let emitted = 0;\n        for (let i = 0; i < len; i++) {\n            const source = from(sources[i]);\n            let hasValue = false;\n            subscriber.add(source.subscribe({\n                next: value => {\n                    if (!hasValue) {\n                        hasValue = true;\n                        emitted++;\n                    }\n                    values[i] = value;\n                },\n                error: err => subscriber.error(err),\n                complete: () => {\n                    completed++;\n                    if (completed === len || !hasValue) {\n                        if (emitted === len) {\n                            subscriber.next(keys ?\n                                keys.reduce((result, key, i) => (result[key] = values[i], result), {}) :\n                                values);\n                        }\n                        subscriber.complete();\n                    }\n                }\n            }));\n        }\n    });\n}\n","import { Observable } from '../Observable';\nimport { subscribeTo } from '../util/subscribeTo';\nimport { scheduled } from '../scheduled/scheduled';\nexport function from(input, scheduler) {\n    if (!scheduler) {\n        if (input instanceof Observable) {\n            return input;\n        }\n        return new Observable(subscribeTo(input));\n    }\n    else {\n        return scheduled(input, scheduler);\n    }\n}\n","import { scheduleObservable } from './scheduleObservable';\nimport { schedulePromise } from './schedulePromise';\nimport { scheduleArray } from './scheduleArray';\nimport { scheduleIterable } from './scheduleIterable';\nimport { isInteropObservable } from '../util/isInteropObservable';\nimport { isPromise } from '../util/isPromise';\nimport { isArrayLike } from '../util/isArrayLike';\nimport { isIterable } from '../util/isIterable';\nexport function scheduled(input, scheduler) {\n    if (input != null) {\n        if (isInteropObservable(input)) {\n            return scheduleObservable(input, scheduler);\n        }\n        else if (isPromise(input)) {\n            return schedulePromise(input, scheduler);\n        }\n        else if (isArrayLike(input)) {\n            return scheduleArray(input, scheduler);\n        }\n        else if (isIterable(input) || typeof input === 'string') {\n            return scheduleIterable(input, scheduler);\n        }\n    }\n    throw new TypeError((input !== null && typeof input || input) + ' is not observable');\n}\n","import { observable as Symbol_observable } from '../symbol/observable';\nexport function isInteropObservable(input) {\n    return input && typeof input[Symbol_observable] === 'function';\n}\n","import { Observable } from '../Observable';\nimport { Subscription } from '../Subscription';\nimport { observable as Symbol_observable } from '../symbol/observable';\nexport function scheduleObservable(input, scheduler) {\n    return new Observable(subscriber => {\n        const sub = new Subscription();\n        sub.add(scheduler.schedule(() => {\n            const observable = input[Symbol_observable]();\n            sub.add(observable.subscribe({\n                next(value) { sub.add(scheduler.schedule(() => subscriber.next(value))); },\n                error(err) { sub.add(scheduler.schedule(() => subscriber.error(err))); },\n                complete() { sub.add(scheduler.schedule(() => subscriber.complete())); },\n            }));\n        }));\n        return sub;\n    });\n}\n","import { Observable } from '../Observable';\nimport { Subscription } from '../Subscription';\nexport function schedulePromise(input, scheduler) {\n    return new Observable(subscriber => {\n        const sub = new Subscription();\n        sub.add(scheduler.schedule(() => input.then(value => {\n            sub.add(scheduler.schedule(() => {\n                subscriber.next(value);\n                sub.add(scheduler.schedule(() => subscriber.complete()));\n            }));\n        }, err => {\n            sub.add(scheduler.schedule(() => subscriber.error(err)));\n        })));\n        return sub;\n    });\n}\n","import { iterator as Symbol_iterator } from '../symbol/iterator';\nexport function isIterable(input) {\n    return input && typeof input[Symbol_iterator] === 'function';\n}\n","import { Observable } from '../Observable';\nimport { Subscription } from '../Subscription';\nimport { iterator as Symbol_iterator } from '../symbol/iterator';\nexport function scheduleIterable(input, scheduler) {\n    if (!input) {\n        throw new Error('Iterable cannot be null');\n    }\n    return new Observable(subscriber => {\n        const sub = new Subscription();\n        let iterator;\n        sub.add(() => {\n            if (iterator && typeof iterator.return === 'function') {\n                iterator.return();\n            }\n        });\n        sub.add(scheduler.schedule(() => {\n            iterator = input[Symbol_iterator]();\n            sub.add(scheduler.schedule(function () {\n                if (subscriber.closed) {\n                    return;\n                }\n                let value;\n                let done;\n                try {\n                    const result = iterator.next();\n                    value = result.value;\n                    done = result.done;\n                }\n                catch (err) {\n                    subscriber.error(err);\n                    return;\n                }\n                if (done) {\n                    subscriber.complete();\n                }\n                else {\n                    subscriber.next(value);\n                    this.schedule();\n                }\n            }));\n        }));\n        return sub;\n    });\n}\n","import { Observable } from '../Observable';\nimport { subscribeToArray } from '../util/subscribeToArray';\nimport { scheduleArray } from '../scheduled/scheduleArray';\nexport function fromArray(input, scheduler) {\n    if (!scheduler) {\n        return new Observable(subscribeToArray(input));\n    }\n    else {\n        return scheduleArray(input, scheduler);\n    }\n}\n","import { Observable } from '../Observable';\nimport { isArray } from '../util/isArray';\nimport { isFunction } from '../util/isFunction';\nimport { map } from '../operators/map';\nconst toString = (() => Object.prototype.toString)();\nexport function fromEvent(target, eventName, options, resultSelector) {\n    if (isFunction(options)) {\n        resultSelector = options;\n        options = undefined;\n    }\n    if (resultSelector) {\n        return fromEvent(target, eventName, options).pipe(map(args => isArray(args) ? resultSelector(...args) : resultSelector(args)));\n    }\n    return new Observable(subscriber => {\n        function handler(e) {\n            if (arguments.length > 1) {\n                subscriber.next(Array.prototype.slice.call(arguments));\n            }\n            else {\n                subscriber.next(e);\n            }\n        }\n        setupSubscription(target, eventName, handler, subscriber, options);\n    });\n}\nfunction setupSubscription(sourceObj, eventName, handler, subscriber, options) {\n    let unsubscribe;\n    if (isEventTarget(sourceObj)) {\n        const source = sourceObj;\n        sourceObj.addEventListener(eventName, handler, options);\n        unsubscribe = () => source.removeEventListener(eventName, handler, options);\n    }\n    else if (isJQueryStyleEventEmitter(sourceObj)) {\n        const source = sourceObj;\n        sourceObj.on(eventName, handler);\n        unsubscribe = () => source.off(eventName, handler);\n    }\n    else if (isNodeStyleEventEmitter(sourceObj)) {\n        const source = sourceObj;\n        sourceObj.addListener(eventName, handler);\n        unsubscribe = () => source.removeListener(eventName, handler);\n    }\n    else if (sourceObj && sourceObj.length) {\n        for (let i = 0, len = sourceObj.length; i < len; i++) {\n            setupSubscription(sourceObj[i], eventName, handler, subscriber, options);\n        }\n    }\n    else {\n        throw new TypeError('Invalid event target');\n    }\n    subscriber.add(unsubscribe);\n}\nfunction isNodeStyleEventEmitter(sourceObj) {\n    return sourceObj && typeof sourceObj.addListener === 'function' && typeof sourceObj.removeListener === 'function';\n}\nfunction isJQueryStyleEventEmitter(sourceObj) {\n    return sourceObj && typeof sourceObj.on === 'function' && typeof sourceObj.off === 'function';\n}\nfunction isEventTarget(sourceObj) {\n    return sourceObj && typeof sourceObj.addEventListener === 'function' && typeof sourceObj.removeEventListener === 'function';\n}\n","import { Observable } from '../Observable';\nimport { isScheduler } from '../util/isScheduler';\nimport { mergeAll } from '../operators/mergeAll';\nimport { fromArray } from './fromArray';\nexport function merge(...observables) {\n    let concurrent = Number.POSITIVE_INFINITY;\n    let scheduler = null;\n    let last = observables[observables.length - 1];\n    if (isScheduler(last)) {\n        scheduler = observables.pop();\n        if (observables.length > 1 && typeof observables[observables.length - 1] === 'number') {\n            concurrent = observables.pop();\n        }\n    }\n    else if (typeof last === 'number') {\n        concurrent = observables.pop();\n    }\n    if (scheduler === null && observables.length === 1 && observables[0] instanceof Observable) {\n        return observables[0];\n    }\n    return mergeAll(concurrent)(fromArray(observables, scheduler));\n}\n","import { isScheduler } from '../util/isScheduler';\nimport { fromArray } from './fromArray';\nimport { scheduleArray } from '../scheduled/scheduleArray';\nexport function of(...args) {\n    let scheduler = args[args.length - 1];\n    if (isScheduler(scheduler)) {\n        args.pop();\n        return scheduleArray(args, scheduler);\n    }\n    else {\n        return fromArray(args);\n    }\n}\n","import { Observable } from '../Observable';\nexport function throwError(error, scheduler) {\n    if (!scheduler) {\n        return new Observable(subscriber => subscriber.error(error));\n    }\n    else {\n        return new Observable(subscriber => scheduler.schedule(dispatch, 0, { error, subscriber }));\n    }\n}\nfunction dispatch({ error, subscriber }) {\n    subscriber.error(error);\n}\n","import { isArray } from './isArray';\nexport function isNumeric(val) {\n    return !isArray(val) && (val - parseFloat(val) + 1) >= 0;\n}\n","import { Observable } from '../Observable';\nimport { async } from '../scheduler/async';\nimport { isNumeric } from '../util/isNumeric';\nimport { isScheduler } from '../util/isScheduler';\nexport function timer(dueTime = 0, periodOrScheduler, scheduler) {\n    let period = -1;\n    if (isNumeric(periodOrScheduler)) {\n        period = Number(periodOrScheduler) < 1 && 1 || Number(periodOrScheduler);\n    }\n    else if (isScheduler(periodOrScheduler)) {\n        scheduler = periodOrScheduler;\n    }\n    if (!isScheduler(scheduler)) {\n        scheduler = async;\n    }\n    return new Observable(subscriber => {\n        const due = isNumeric(dueTime)\n            ? dueTime\n            : (+dueTime - scheduler.now());\n        return scheduler.schedule(dispatch, due, {\n            index: 0, period, subscriber\n        });\n    });\n}\nfunction dispatch(state) {\n    const { index, period, subscriber } = state;\n    subscriber.next(index);\n    if (subscriber.closed) {\n        return;\n    }\n    else if (period === -1) {\n        return subscriber.complete();\n    }\n    state.index = index + 1;\n    this.schedule(state, period);\n}\n","import { SimpleOuterSubscriber, SimpleInnerSubscriber, innerSubscribe } from '../innerSubscribe';\nexport function catchError(selector) {\n    return function catchErrorOperatorFunction(source) {\n        const operator = new CatchOperator(selector);\n        const caught = source.lift(operator);\n        return (operator.caught = caught);\n    };\n}\nclass CatchOperator {\n    constructor(selector) {\n        this.selector = selector;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new CatchSubscriber(subscriber, this.selector, this.caught));\n    }\n}\nclass CatchSubscriber extends SimpleOuterSubscriber {\n    constructor(destination, selector, caught) {\n        super(destination);\n        this.selector = selector;\n        this.caught = caught;\n    }\n    error(err) {\n        if (!this.isStopped) {\n            let result;\n            try {\n                result = this.selector(err, this.caught);\n            }\n            catch (err2) {\n                super.error(err2);\n                return;\n            }\n            this._unsubscribeAndRecycle();\n            const innerSubscriber = new SimpleInnerSubscriber(this);\n            this.add(innerSubscriber);\n            const innerSubscription = innerSubscribe(result, innerSubscriber);\n            if (innerSubscription !== innerSubscriber) {\n                this.add(innerSubscription);\n            }\n        }\n    }\n}\n","import { mergeMap } from './mergeMap';\nexport function concatMap(project, resultSelector) {\n    return mergeMap(project, resultSelector, 1);\n}\n","import { Subscriber } from '../Subscriber';\nimport { async } from '../scheduler/async';\nexport function debounceTime(dueTime, scheduler = async) {\n    return (source) => source.lift(new DebounceTimeOperator(dueTime, scheduler));\n}\nclass DebounceTimeOperator {\n    constructor(dueTime, scheduler) {\n        this.dueTime = dueTime;\n        this.scheduler = scheduler;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new DebounceTimeSubscriber(subscriber, this.dueTime, this.scheduler));\n    }\n}\nclass DebounceTimeSubscriber extends Subscriber {\n    constructor(destination, dueTime, scheduler) {\n        super(destination);\n        this.dueTime = dueTime;\n        this.scheduler = scheduler;\n        this.debouncedSubscription = null;\n        this.lastValue = null;\n        this.hasValue = false;\n    }\n    _next(value) {\n        this.clearDebounce();\n        this.lastValue = value;\n        this.hasValue = true;\n        this.add(this.debouncedSubscription = this.scheduler.schedule(dispatchNext, this.dueTime, this));\n    }\n    _complete() {\n        this.debouncedNext();\n        this.destination.complete();\n    }\n    debouncedNext() {\n        this.clearDebounce();\n        if (this.hasValue) {\n            const { lastValue } = this;\n            this.lastValue = null;\n            this.hasValue = false;\n            this.destination.next(lastValue);\n        }\n    }\n    clearDebounce() {\n        const debouncedSubscription = this.debouncedSubscription;\n        if (debouncedSubscription !== null) {\n            this.remove(debouncedSubscription);\n            debouncedSubscription.unsubscribe();\n            this.debouncedSubscription = null;\n        }\n    }\n}\nfunction dispatchNext(subscriber) {\n    subscriber.debouncedNext();\n}\n","import { Subscriber } from '../Subscriber';\nexport function defaultIfEmpty(defaultValue = null) {\n    return (source) => source.lift(new DefaultIfEmptyOperator(defaultValue));\n}\nclass DefaultIfEmptyOperator {\n    constructor(defaultValue) {\n        this.defaultValue = defaultValue;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new DefaultIfEmptySubscriber(subscriber, this.defaultValue));\n    }\n}\nclass DefaultIfEmptySubscriber extends Subscriber {\n    constructor(destination, defaultValue) {\n        super(destination);\n        this.defaultValue = defaultValue;\n        this.isEmpty = true;\n    }\n    _next(value) {\n        this.isEmpty = false;\n        this.destination.next(value);\n    }\n    _complete() {\n        if (this.isEmpty) {\n            this.destination.next(this.defaultValue);\n        }\n        this.destination.complete();\n    }\n}\n","import { Subscriber } from '../Subscriber';\nexport function distinctUntilChanged(compare, keySelector) {\n    return (source) => source.lift(new DistinctUntilChangedOperator(compare, keySelector));\n}\nclass DistinctUntilChangedOperator {\n    constructor(compare, keySelector) {\n        this.compare = compare;\n        this.keySelector = keySelector;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new DistinctUntilChangedSubscriber(subscriber, this.compare, this.keySelector));\n    }\n}\nclass DistinctUntilChangedSubscriber extends Subscriber {\n    constructor(destination, compare, keySelector) {\n        super(destination);\n        this.keySelector = keySelector;\n        this.hasKey = false;\n        if (typeof compare === 'function') {\n            this.compare = compare;\n        }\n    }\n    compare(x, y) {\n        return x === y;\n    }\n    _next(value) {\n        let key;\n        try {\n            const { keySelector } = this;\n            key = keySelector ? keySelector(value) : value;\n        }\n        catch (err) {\n            return this.destination.error(err);\n        }\n        let result = false;\n        if (this.hasKey) {\n            try {\n                const { compare } = this;\n                result = compare(this.key, key);\n            }\n            catch (err) {\n                return this.destination.error(err);\n            }\n        }\n        else {\n            this.hasKey = true;\n        }\n        if (!result) {\n            this.key = key;\n            this.destination.next(value);\n        }\n    }\n}\n","import { Subscriber } from '../Subscriber';\nexport function filter(predicate, thisArg) {\n    return function filterOperatorFunction(source) {\n        return source.lift(new FilterOperator(predicate, thisArg));\n    };\n}\nclass FilterOperator {\n    constructor(predicate, thisArg) {\n        this.predicate = predicate;\n        this.thisArg = thisArg;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new FilterSubscriber(subscriber, this.predicate, this.thisArg));\n    }\n}\nclass FilterSubscriber extends Subscriber {\n    constructor(destination, predicate, thisArg) {\n        super(destination);\n        this.predicate = predicate;\n        this.thisArg = thisArg;\n        this.count = 0;\n    }\n    _next(value) {\n        let result;\n        try {\n            result = this.predicate.call(this.thisArg, value, this.count++);\n        }\n        catch (err) {\n            this.destination.error(err);\n            return;\n        }\n        if (result) {\n            this.destination.next(value);\n        }\n    }\n}\n","import { EmptyError } from '../util/EmptyError';\nimport { filter } from './filter';\nimport { take } from './take';\nimport { defaultIfEmpty } from './defaultIfEmpty';\nimport { throwIfEmpty } from './throwIfEmpty';\nimport { identity } from '../util/identity';\nexport function first(predicate, defaultValue) {\n    const hasDefaultValue = arguments.length >= 2;\n    return (source) => source.pipe(predicate ? filter((v, i) => predicate(v, i, source)) : identity, take(1), hasDefaultValue ? defaultIfEmpty(defaultValue) : throwIfEmpty(() => new EmptyError()));\n}\n","import { Subscriber } from '../Subscriber';\nexport function map(project, thisArg) {\n    return function mapOperation(source) {\n        if (typeof project !== 'function') {\n            throw new TypeError('argument is not a function. Are you looking for `mapTo()`?');\n        }\n        return source.lift(new MapOperator(project, thisArg));\n    };\n}\nexport class MapOperator {\n    constructor(project, thisArg) {\n        this.project = project;\n        this.thisArg = thisArg;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new MapSubscriber(subscriber, this.project, this.thisArg));\n    }\n}\nclass MapSubscriber extends Subscriber {\n    constructor(destination, project, thisArg) {\n        super(destination);\n        this.project = project;\n        this.count = 0;\n        this.thisArg = thisArg || this;\n    }\n    _next(value) {\n        let result;\n        try {\n            result = this.project.call(this.thisArg, value, this.count++);\n        }\n        catch (err) {\n            this.destination.error(err);\n            return;\n        }\n        this.destination.next(result);\n    }\n}\n","import { mergeMap } from './mergeMap';\nimport { identity } from '../util/identity';\nexport function mergeAll(concurrent = Number.POSITIVE_INFINITY) {\n    return mergeMap(identity, concurrent);\n}\n","import { map } from './map';\nimport { from } from '../observable/from';\nimport { SimpleOuterSubscriber, SimpleInnerSubscriber, innerSubscribe } from '../innerSubscribe';\nexport function mergeMap(project, resultSelector, concurrent = Number.POSITIVE_INFINITY) {\n    if (typeof resultSelector === 'function') {\n        return (source) => source.pipe(mergeMap((a, i) => from(project(a, i)).pipe(map((b, ii) => resultSelector(a, b, i, ii))), concurrent));\n    }\n    else if (typeof resultSelector === 'number') {\n        concurrent = resultSelector;\n    }\n    return (source) => source.lift(new MergeMapOperator(project, concurrent));\n}\nexport class MergeMapOperator {\n    constructor(project, concurrent = Number.POSITIVE_INFINITY) {\n        this.project = project;\n        this.concurrent = concurrent;\n    }\n    call(observer, source) {\n        return source.subscribe(new MergeMapSubscriber(observer, this.project, this.concurrent));\n    }\n}\nexport class MergeMapSubscriber extends SimpleOuterSubscriber {\n    constructor(destination, project, concurrent = Number.POSITIVE_INFINITY) {\n        super(destination);\n        this.project = project;\n        this.concurrent = concurrent;\n        this.hasCompleted = false;\n        this.buffer = [];\n        this.active = 0;\n        this.index = 0;\n    }\n    _next(value) {\n        if (this.active < this.concurrent) {\n            this._tryNext(value);\n        }\n        else {\n            this.buffer.push(value);\n        }\n    }\n    _tryNext(value) {\n        let result;\n        const index = this.index++;\n        try {\n            result = this.project(value, index);\n        }\n        catch (err) {\n            this.destination.error(err);\n            return;\n        }\n        this.active++;\n        this._innerSub(result);\n    }\n    _innerSub(ish) {\n        const innerSubscriber = new SimpleInnerSubscriber(this);\n        const destination = this.destination;\n        destination.add(innerSubscriber);\n        const innerSubscription = innerSubscribe(ish, innerSubscriber);\n        if (innerSubscription !== innerSubscriber) {\n            destination.add(innerSubscription);\n        }\n    }\n    _complete() {\n        this.hasCompleted = true;\n        if (this.active === 0 && this.buffer.length === 0) {\n            this.destination.complete();\n        }\n        this.unsubscribe();\n    }\n    notifyNext(innerValue) {\n        this.destination.next(innerValue);\n    }\n    notifyComplete() {\n        const buffer = this.buffer;\n        this.active--;\n        if (buffer.length > 0) {\n            this._next(buffer.shift());\n        }\n        else if (this.active === 0 && this.hasCompleted) {\n            this.destination.complete();\n        }\n    }\n}\nexport const flatMap = mergeMap;\n","import { Subscriber } from '../Subscriber';\nexport function refCount() {\n    return function refCountOperatorFunction(source) {\n        return source.lift(new RefCountOperator(source));\n    };\n}\nclass RefCountOperator {\n    constructor(connectable) {\n        this.connectable = connectable;\n    }\n    call(subscriber, source) {\n        const { connectable } = this;\n        connectable._refCount++;\n        const refCounter = new RefCountSubscriber(subscriber, connectable);\n        const subscription = source.subscribe(refCounter);\n        if (!refCounter.closed) {\n            refCounter.connection = connectable.connect();\n        }\n        return subscription;\n    }\n}\nclass RefCountSubscriber extends Subscriber {\n    constructor(destination, connectable) {\n        super(destination);\n        this.connectable = connectable;\n    }\n    _unsubscribe() {\n        const { connectable } = this;\n        if (!connectable) {\n            this.connection = null;\n            return;\n        }\n        this.connectable = null;\n        const refCount = connectable._refCount;\n        if (refCount <= 0) {\n            this.connection = null;\n            return;\n        }\n        connectable._refCount = refCount - 1;\n        if (refCount > 1) {\n            this.connection = null;\n            return;\n        }\n        const { connection } = this;\n        const sharedConnection = connectable._connection;\n        this.connection = null;\n        if (sharedConnection && (!connection || sharedConnection === connection)) {\n            sharedConnection.unsubscribe();\n        }\n    }\n}\n","import { Subscriber } from '../Subscriber';\nexport function skip(count) {\n    return (source) => source.lift(new SkipOperator(count));\n}\nclass SkipOperator {\n    constructor(total) {\n        this.total = total;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new SkipSubscriber(subscriber, this.total));\n    }\n}\nclass SkipSubscriber extends Subscriber {\n    constructor(destination, total) {\n        super(destination);\n        this.total = total;\n        this.count = 0;\n    }\n    _next(x) {\n        if (++this.count > this.total) {\n            this.destination.next(x);\n        }\n    }\n}\n","import { concat } from '../observable/concat';\nimport { isScheduler } from '../util/isScheduler';\nexport function startWith(...array) {\n    const scheduler = array[array.length - 1];\n    if (isScheduler(scheduler)) {\n        array.pop();\n        return (source) => concat(array, source, scheduler);\n    }\n    else {\n        return (source) => concat(array, source);\n    }\n}\n","import { map } from './map';\nimport { from } from '../observable/from';\nimport { SimpleOuterSubscriber, SimpleInnerSubscriber, innerSubscribe } from '../innerSubscribe';\nexport function switchMap(project, resultSelector) {\n    if (typeof resultSelector === 'function') {\n        return (source) => source.pipe(switchMap((a, i) => from(project(a, i)).pipe(map((b, ii) => resultSelector(a, b, i, ii)))));\n    }\n    return (source) => source.lift(new SwitchMapOperator(project));\n}\nclass SwitchMapOperator {\n    constructor(project) {\n        this.project = project;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new SwitchMapSubscriber(subscriber, this.project));\n    }\n}\nclass SwitchMapSubscriber extends SimpleOuterSubscriber {\n    constructor(destination, project) {\n        super(destination);\n        this.project = project;\n        this.index = 0;\n    }\n    _next(value) {\n        let result;\n        const index = this.index++;\n        try {\n            result = this.project(value, index);\n        }\n        catch (error) {\n            this.destination.error(error);\n            return;\n        }\n        this._innerSub(result);\n    }\n    _innerSub(result) {\n        const innerSubscription = this.innerSubscription;\n        if (innerSubscription) {\n            innerSubscription.unsubscribe();\n        }\n        const innerSubscriber = new SimpleInnerSubscriber(this);\n        const destination = this.destination;\n        destination.add(innerSubscriber);\n        this.innerSubscription = innerSubscribe(result, innerSubscriber);\n        if (this.innerSubscription !== innerSubscriber) {\n            destination.add(this.innerSubscription);\n        }\n    }\n    _complete() {\n        const { innerSubscription } = this;\n        if (!innerSubscription || innerSubscription.closed) {\n            super._complete();\n        }\n        this.unsubscribe();\n    }\n    _unsubscribe() {\n        this.innerSubscription = undefined;\n    }\n    notifyComplete() {\n        this.innerSubscription = undefined;\n        if (this.isStopped) {\n            super._complete();\n        }\n    }\n    notifyNext(innerValue) {\n        this.destination.next(innerValue);\n    }\n}\n","import { Subscriber } from '../Subscriber';\nimport { ArgumentOutOfRangeError } from '../util/ArgumentOutOfRangeError';\nimport { empty } from '../observable/empty';\nexport function take(count) {\n    return (source) => {\n        if (count === 0) {\n            return empty();\n        }\n        else {\n            return source.lift(new TakeOperator(count));\n        }\n    };\n}\nclass TakeOperator {\n    constructor(total) {\n        this.total = total;\n        if (this.total < 0) {\n            throw new ArgumentOutOfRangeError;\n        }\n    }\n    call(subscriber, source) {\n        return source.subscribe(new TakeSubscriber(subscriber, this.total));\n    }\n}\nclass TakeSubscriber extends Subscriber {\n    constructor(destination, total) {\n        super(destination);\n        this.total = total;\n        this.count = 0;\n    }\n    _next(value) {\n        const total = this.total;\n        const count = ++this.count;\n        if (count <= total) {\n            this.destination.next(value);\n            if (count === total) {\n                this.destination.complete();\n                this.unsubscribe();\n            }\n        }\n    }\n}\n","import { innerSubscribe, SimpleInnerSubscriber, SimpleOuterSubscriber } from '../innerSubscribe';\nexport function takeUntil(notifier) {\n    return (source) => source.lift(new TakeUntilOperator(notifier));\n}\nclass TakeUntilOperator {\n    constructor(notifier) {\n        this.notifier = notifier;\n    }\n    call(subscriber, source) {\n        const takeUntilSubscriber = new TakeUntilSubscriber(subscriber);\n        const notifierSubscription = innerSubscribe(this.notifier, new SimpleInnerSubscriber(takeUntilSubscriber));\n        if (notifierSubscription && !takeUntilSubscriber.seenValue) {\n            takeUntilSubscriber.add(notifierSubscription);\n            return source.subscribe(takeUntilSubscriber);\n        }\n        return takeUntilSubscriber;\n    }\n}\nclass TakeUntilSubscriber extends SimpleOuterSubscriber {\n    constructor(destination) {\n        super(destination);\n        this.seenValue = false;\n    }\n    notifyNext() {\n        this.seenValue = true;\n        this.complete();\n    }\n    notifyComplete() {\n    }\n}\n","export function noop() { }\n","import { Subscriber } from '../Subscriber';\nimport { noop } from '../util/noop';\nimport { isFunction } from '../util/isFunction';\nexport function tap(nextOrObserver, error, complete) {\n    return function tapOperatorFunction(source) {\n        return source.lift(new DoOperator(nextOrObserver, error, complete));\n    };\n}\nclass DoOperator {\n    constructor(nextOrObserver, error, complete) {\n        this.nextOrObserver = nextOrObserver;\n        this.error = error;\n        this.complete = complete;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new TapSubscriber(subscriber, this.nextOrObserver, this.error, this.complete));\n    }\n}\nclass TapSubscriber extends Subscriber {\n    constructor(destination, observerOrNext, error, complete) {\n        super(destination);\n        this._tapNext = noop;\n        this._tapError = noop;\n        this._tapComplete = noop;\n        this._tapError = error || noop;\n        this._tapComplete = complete || noop;\n        if (isFunction(observerOrNext)) {\n            this._context = this;\n            this._tapNext = observerOrNext;\n        }\n        else if (observerOrNext) {\n            this._context = observerOrNext;\n            this._tapNext = observerOrNext.next || noop;\n            this._tapError = observerOrNext.error || noop;\n            this._tapComplete = observerOrNext.complete || noop;\n        }\n    }\n    _next(value) {\n        try {\n            this._tapNext.call(this._context, value);\n        }\n        catch (err) {\n            this.destination.error(err);\n            return;\n        }\n        this.destination.next(value);\n    }\n    _error(err) {\n        try {\n            this._tapError.call(this._context, err);\n        }\n        catch (err) {\n            this.destination.error(err);\n            return;\n        }\n        this.destination.error(err);\n    }\n    _complete() {\n        try {\n            this._tapComplete.call(this._context);\n        }\n        catch (err) {\n            this.destination.error(err);\n            return;\n        }\n        return this.destination.complete();\n    }\n}\n","import { EmptyError } from '../util/EmptyError';\nimport { Subscriber } from '../Subscriber';\nexport function throwIfEmpty(errorFactory = defaultErrorFactory) {\n    return (source) => {\n        return source.lift(new ThrowIfEmptyOperator(errorFactory));\n    };\n}\nclass ThrowIfEmptyOperator {\n    constructor(errorFactory) {\n        this.errorFactory = errorFactory;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new ThrowIfEmptySubscriber(subscriber, this.errorFactory));\n    }\n}\nclass ThrowIfEmptySubscriber extends Subscriber {\n    constructor(destination, errorFactory) {\n        super(destination);\n        this.errorFactory = errorFactory;\n        this.hasValue = false;\n    }\n    _next(value) {\n        this.hasValue = true;\n        this.destination.next(value);\n    }\n    _complete() {\n        if (!this.hasValue) {\n            let err;\n            try {\n                err = this.errorFactory();\n            }\n            catch (e) {\n                err = e;\n            }\n            this.destination.error(err);\n        }\n        else {\n            return this.destination.complete();\n        }\n    }\n}\nfunction defaultErrorFactory() {\n    return new EmptyError();\n}\n","import { Observable } from '../Observable';\nimport { Subscription } from '../Subscription';\nexport function scheduleArray(input, scheduler) {\n    return new Observable(subscriber => {\n        const sub = new Subscription();\n        let i = 0;\n        sub.add(scheduler.schedule(function () {\n            if (i === input.length) {\n                subscriber.complete();\n                return;\n            }\n            subscriber.next(input[i++]);\n            if (!subscriber.closed) {\n                sub.add(this.schedule());\n            }\n        }));\n        return sub;\n    });\n}\n","import { Subscription } from '../Subscription';\nexport class Action extends Subscription {\n    constructor(scheduler, work) {\n        super();\n    }\n    schedule(state, delay = 0) {\n        return this;\n    }\n}\n","import { Action } from './Action';\nexport class AsyncAction extends Action {\n    constructor(scheduler, work) {\n        super(scheduler, work);\n        this.scheduler = scheduler;\n        this.work = work;\n        this.pending = false;\n    }\n    schedule(state, delay = 0) {\n        if (this.closed) {\n            return this;\n        }\n        this.state = state;\n        const id = this.id;\n        const scheduler = this.scheduler;\n        if (id != null) {\n            this.id = this.recycleAsyncId(scheduler, id, delay);\n        }\n        this.pending = true;\n        this.delay = delay;\n        this.id = this.id || this.requestAsyncId(scheduler, this.id, delay);\n        return this;\n    }\n    requestAsyncId(scheduler, id, delay = 0) {\n        return setInterval(scheduler.flush.bind(scheduler, this), delay);\n    }\n    recycleAsyncId(scheduler, id, delay = 0) {\n        if (delay !== null && this.delay === delay && this.pending === false) {\n            return id;\n        }\n        clearInterval(id);\n        return undefined;\n    }\n    execute(state, delay) {\n        if (this.closed) {\n            return new Error('executing a cancelled action');\n        }\n        this.pending = false;\n        const error = this._execute(state, delay);\n        if (error) {\n            return error;\n        }\n        else if (this.pending === false && this.id != null) {\n            this.id = this.recycleAsyncId(this.scheduler, this.id, null);\n        }\n    }\n    _execute(state, delay) {\n        let errored = false;\n        let errorValue = undefined;\n        try {\n            this.work(state);\n        }\n        catch (e) {\n            errored = true;\n            errorValue = !!e && e || new Error(e);\n        }\n        if (errored) {\n            this.unsubscribe();\n            return errorValue;\n        }\n    }\n    _unsubscribe() {\n        const id = this.id;\n        const scheduler = this.scheduler;\n        const actions = scheduler.actions;\n        const index = actions.indexOf(this);\n        this.work = null;\n        this.state = null;\n        this.pending = false;\n        this.scheduler = null;\n        if (index !== -1) {\n            actions.splice(index, 1);\n        }\n        if (id != null) {\n            this.id = this.recycleAsyncId(scheduler, id, null);\n        }\n        this.delay = null;\n    }\n}\n","export class Scheduler {\n    constructor(SchedulerAction, now = Scheduler.now) {\n        this.SchedulerAction = SchedulerAction;\n        this.now = now;\n    }\n    schedule(work, delay = 0, state) {\n        return new this.SchedulerAction(this, work).schedule(state, delay);\n    }\n}\nScheduler.now = () => Date.now();\n","import { Scheduler } from '../Scheduler';\nexport class AsyncScheduler extends Scheduler {\n    constructor(SchedulerAction, now = Scheduler.now) {\n        super(SchedulerAction, () => {\n            if (AsyncScheduler.delegate && AsyncScheduler.delegate !== this) {\n                return AsyncScheduler.delegate.now();\n            }\n            else {\n                return now();\n            }\n        });\n        this.actions = [];\n        this.active = false;\n        this.scheduled = undefined;\n    }\n    schedule(work, delay = 0, state) {\n        if (AsyncScheduler.delegate && AsyncScheduler.delegate !== this) {\n            return AsyncScheduler.delegate.schedule(work, delay, state);\n        }\n        else {\n            return super.schedule(work, delay, state);\n        }\n    }\n    flush(action) {\n        const { actions } = this;\n        if (this.active) {\n            actions.push(action);\n            return;\n        }\n        let error;\n        this.active = true;\n        do {\n            if (error = action.execute(action.state, action.delay)) {\n                break;\n            }\n        } while (action = actions.shift());\n        this.active = false;\n        if (error) {\n            while (action = actions.shift()) {\n                action.unsubscribe();\n            }\n            throw error;\n        }\n    }\n}\n","import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\nexport const asyncScheduler = new AsyncScheduler(AsyncAction);\nexport const async = asyncScheduler;\n","export function getSymbolIterator() {\n    if (typeof Symbol !== 'function' || !Symbol.iterator) {\n        return '@@iterator';\n    }\n    return Symbol.iterator;\n}\nexport const iterator = getSymbolIterator();\nexport const $$iterator = iterator;\n","export const observable = (() => typeof Symbol === 'function' && Symbol.observable || '@@observable')();\n","export const rxSubscriber = (() => typeof Symbol === 'function'\n    ? Symbol('rxSubscriber')\n    : '@@rxSubscriber_' + Math.random())();\nexport const $$rxSubscriber = rxSubscriber;\n","const ArgumentOutOfRangeErrorImpl = (() => {\n    function ArgumentOutOfRangeErrorImpl() {\n        Error.call(this);\n        this.message = 'argument out of range';\n        this.name = 'ArgumentOutOfRangeError';\n        return this;\n    }\n    ArgumentOutOfRangeErrorImpl.prototype = Object.create(Error.prototype);\n    return ArgumentOutOfRangeErrorImpl;\n})();\nexport const ArgumentOutOfRangeError = ArgumentOutOfRangeErrorImpl;\n","const EmptyErrorImpl = (() => {\n    function EmptyErrorImpl() {\n        Error.call(this);\n        this.message = 'no elements in sequence';\n        this.name = 'EmptyError';\n        return this;\n    }\n    EmptyErrorImpl.prototype = Object.create(Error.prototype);\n    return EmptyErrorImpl;\n})();\nexport const EmptyError = EmptyErrorImpl;\n","const ObjectUnsubscribedErrorImpl = (() => {\n    function ObjectUnsubscribedErrorImpl() {\n        Error.call(this);\n        this.message = 'object unsubscribed';\n        this.name = 'ObjectUnsubscribedError';\n        return this;\n    }\n    ObjectUnsubscribedErrorImpl.prototype = Object.create(Error.prototype);\n    return ObjectUnsubscribedErrorImpl;\n})();\nexport const ObjectUnsubscribedError = ObjectUnsubscribedErrorImpl;\n","export function hostReportError(err) {\n    setTimeout(() => { throw err; }, 0);\n}\n","export function identity(x) {\n    return x;\n}\n","export const isArray = (() => Array.isArray || ((x) => x && typeof x.length === 'number'))();\n","export const isArrayLike = ((x) => x && typeof x.length === 'number' && typeof x !== 'function');\n","export function isFunction(x) {\n    return typeof x === 'function';\n}\n","export function isObject(x) {\n    return x !== null && typeof x === 'object';\n}\n","export function isPromise(value) {\n    return !!value && typeof value.subscribe !== 'function' && typeof value.then === 'function';\n}\n","export function isScheduler(value) {\n    return value && typeof value.schedule === 'function';\n}\n","import { identity } from './identity';\nexport function pipe(...fns) {\n    return pipeFromArray(fns);\n}\nexport function pipeFromArray(fns) {\n    if (fns.length === 0) {\n        return identity;\n    }\n    if (fns.length === 1) {\n        return fns[0];\n    }\n    return function piped(input) {\n        return fns.reduce((prev, fn) => fn(prev), input);\n    };\n}\n","import { subscribeToArray } from './subscribeToArray';\nimport { subscribeToPromise } from './subscribeToPromise';\nimport { subscribeToIterable } from './subscribeToIterable';\nimport { subscribeToObservable } from './subscribeToObservable';\nimport { isArrayLike } from './isArrayLike';\nimport { isPromise } from './isPromise';\nimport { isObject } from './isObject';\nimport { iterator as Symbol_iterator } from '../symbol/iterator';\nimport { observable as Symbol_observable } from '../symbol/observable';\nexport const subscribeTo = (result) => {\n    if (!!result && typeof result[Symbol_observable] === 'function') {\n        return subscribeToObservable(result);\n    }\n    else if (isArrayLike(result)) {\n        return subscribeToArray(result);\n    }\n    else if (isPromise(result)) {\n        return subscribeToPromise(result);\n    }\n    else if (!!result && typeof result[Symbol_iterator] === 'function') {\n        return subscribeToIterable(result);\n    }\n    else {\n        const value = isObject(result) ? 'an invalid object' : `'${result}'`;\n        const msg = `You provided ${value} where a stream was expected.`\n            + ' You can provide an Observable, Promise, Array, or Iterable.';\n        throw new TypeError(msg);\n    }\n};\n","import { observable as Symbol_observable } from '../symbol/observable';\nexport const subscribeToObservable = (obj) => (subscriber) => {\n    const obs = obj[Symbol_observable]();\n    if (typeof obs.subscribe !== 'function') {\n        throw new TypeError('Provided object does not correctly implement Symbol.observable');\n    }\n    else {\n        return obs.subscribe(subscriber);\n    }\n};\n","import { hostReportError } from './hostReportError';\nexport const subscribeToPromise = (promise) => (subscriber) => {\n    promise.then((value) => {\n        if (!subscriber.closed) {\n            subscriber.next(value);\n            subscriber.complete();\n        }\n    }, (err) => subscriber.error(err))\n        .then(null, hostReportError);\n    return subscriber;\n};\n","import { iterator as Symbol_iterator } from '../symbol/iterator';\nexport const subscribeToIterable = (iterable) => (subscriber) => {\n    const iterator = iterable[Symbol_iterator]();\n    do {\n        let item;\n        try {\n            item = iterator.next();\n        }\n        catch (err) {\n            subscriber.error(err);\n            return subscriber;\n        }\n        if (item.done) {\n            subscriber.complete();\n            break;\n        }\n        subscriber.next(item.value);\n        if (subscriber.closed) {\n            break;\n        }\n    } while (true);\n    if (typeof iterator.return === 'function') {\n        subscriber.add(() => {\n            if (iterator.return) {\n                iterator.return();\n            }\n        });\n    }\n    return subscriber;\n};\n","export const subscribeToArray = (array) => (subscriber) => {\n    for (let i = 0, len = array.length; i < len && !subscriber.closed; i++) {\n        subscriber.next(array[i]);\n    }\n    subscriber.complete();\n};\n","/**\n * @license Angular v15.2.10\n * (c) 2010-2022 Google LLC. https://angular.io/\n * License: MIT\n */\n\nimport * as i0 from '@angular/core';\nimport { InjectionToken, Injectable, ɵɵinject, Inject, inject, Optional, EventEmitter, ɵfindLocaleData, ɵLocaleDataIndex, ɵgetLocaleCurrencyCode, ɵgetLocalePluralCase, LOCALE_ID, ɵregisterLocaleData, ɵstringify, Directive, Input, createNgModule, NgModuleRef, ɵRuntimeError, Host, Attribute, RendererStyleFlags2, ɵisPromise, ɵisSubscribable, Pipe, DEFAULT_CURRENCY_CODE, NgModule, Version, ɵɵdefineInjectable, ɵformatRuntimeError, Renderer2, ElementRef, Injector, PLATFORM_ID, NgZone } from '@angular/core';\n\nlet _DOM = null;\nfunction getDOM() {\n    return _DOM;\n}\nfunction setRootDomAdapter(adapter) {\n    if (!_DOM) {\n        _DOM = adapter;\n    }\n}\n/* tslint:disable:requireParameterType */\n/**\n * Provides DOM operations in an environment-agnostic way.\n *\n * @security Tread carefully! Interacting with the DOM directly is dangerous and\n * can introduce XSS risks.\n */\nclass DomAdapter {\n}\n\n/**\n * A DI Token representing the main rendering context.\n * In a browser and SSR this is the DOM Document.\n * When using SSR, that document is created by [Domino](https://github.com/angular/domino).\n *\n * @publicApi\n */\nconst DOCUMENT = new InjectionToken('DocumentToken');\n\n/**\n * This class should not be used directly by an application developer. Instead, use\n * {@link Location}.\n *\n * `PlatformLocation` encapsulates all calls to DOM APIs, which allows the Router to be\n * platform-agnostic.\n * This means that we can have different implementation of `PlatformLocation` for the different\n * platforms that Angular supports. For example, `@angular/platform-browser` provides an\n * implementation specific to the browser environment, while `@angular/platform-server` provides\n * one suitable for use with server-side rendering.\n *\n * The `PlatformLocation` class is used directly by all implementations of {@link LocationStrategy}\n * when they need to interact with the DOM APIs like pushState, popState, etc.\n *\n * {@link LocationStrategy} in turn is used by the {@link Location} service which is used directly\n * by the {@link Router} in order to navigate between routes. Since all interactions between {@link\n * Router} /\n * {@link Location} / {@link LocationStrategy} and DOM APIs flow through the `PlatformLocation`\n * class, they are all platform-agnostic.\n *\n * @publicApi\n */\nclass PlatformLocation {\n    historyGo(relativePosition) {\n        throw new Error('Not implemented');\n    }\n}\nPlatformLocation.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PlatformLocation, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nPlatformLocation.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PlatformLocation, providedIn: 'platform', useFactory: useBrowserPlatformLocation });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PlatformLocation, decorators: [{\n            type: Injectable,\n            args: [{\n                    providedIn: 'platform',\n                    // See #23917\n                    useFactory: useBrowserPlatformLocation\n                }]\n        }] });\nfunction useBrowserPlatformLocation() {\n    return ɵɵinject(BrowserPlatformLocation);\n}\n/**\n * @description\n * Indicates when a location is initialized.\n *\n * @publicApi\n */\nconst LOCATION_INITIALIZED = new InjectionToken('Location Initialized');\n/**\n * `PlatformLocation` encapsulates all of the direct calls to platform APIs.\n * This class should not be used directly by an application developer. Instead, use\n * {@link Location}.\n *\n * @publicApi\n */\nclass BrowserPlatformLocation extends PlatformLocation {\n    constructor(_doc) {\n        super();\n        this._doc = _doc;\n        this._location = window.location;\n        this._history = window.history;\n    }\n    getBaseHrefFromDOM() {\n        return getDOM().getBaseHref(this._doc);\n    }\n    onPopState(fn) {\n        const window = getDOM().getGlobalEventTarget(this._doc, 'window');\n        window.addEventListener('popstate', fn, false);\n        return () => window.removeEventListener('popstate', fn);\n    }\n    onHashChange(fn) {\n        const window = getDOM().getGlobalEventTarget(this._doc, 'window');\n        window.addEventListener('hashchange', fn, false);\n        return () => window.removeEventListener('hashchange', fn);\n    }\n    get href() {\n        return this._location.href;\n    }\n    get protocol() {\n        return this._location.protocol;\n    }\n    get hostname() {\n        return this._location.hostname;\n    }\n    get port() {\n        return this._location.port;\n    }\n    get pathname() {\n        return this._location.pathname;\n    }\n    get search() {\n        return this._location.search;\n    }\n    get hash() {\n        return this._location.hash;\n    }\n    set pathname(newPath) {\n        this._location.pathname = newPath;\n    }\n    pushState(state, title, url) {\n        if (supportsState()) {\n            this._history.pushState(state, title, url);\n        }\n        else {\n            this._location.hash = url;\n        }\n    }\n    replaceState(state, title, url) {\n        if (supportsState()) {\n            this._history.replaceState(state, title, url);\n        }\n        else {\n            this._location.hash = url;\n        }\n    }\n    forward() {\n        this._history.forward();\n    }\n    back() {\n        this._history.back();\n    }\n    historyGo(relativePosition = 0) {\n        this._history.go(relativePosition);\n    }\n    getState() {\n        return this._history.state;\n    }\n}\nBrowserPlatformLocation.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: BrowserPlatformLocation, deps: [{ token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable });\nBrowserPlatformLocation.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: BrowserPlatformLocation, providedIn: 'platform', useFactory: createBrowserPlatformLocation });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: BrowserPlatformLocation, decorators: [{\n            type: Injectable,\n            args: [{\n                    providedIn: 'platform',\n                    // See #23917\n                    useFactory: createBrowserPlatformLocation,\n                }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }]; } });\nfunction supportsState() {\n    return !!window.history.pushState;\n}\nfunction createBrowserPlatformLocation() {\n    return new BrowserPlatformLocation(ɵɵinject(DOCUMENT));\n}\n\n/**\n * Joins two parts of a URL with a slash if needed.\n *\n * @param start  URL string\n * @param end    URL string\n *\n *\n * @returns The joined URL string.\n */\nfunction joinWithSlash(start, end) {\n    if (start.length == 0) {\n        return end;\n    }\n    if (end.length == 0) {\n        return start;\n    }\n    let slashes = 0;\n    if (start.endsWith('/')) {\n        slashes++;\n    }\n    if (end.startsWith('/')) {\n        slashes++;\n    }\n    if (slashes == 2) {\n        return start + end.substring(1);\n    }\n    if (slashes == 1) {\n        return start + end;\n    }\n    return start + '/' + end;\n}\n/**\n * Removes a trailing slash from a URL string if needed.\n * Looks for the first occurrence of either `#`, `?`, or the end of the\n * line as `/` characters and removes the trailing slash if one exists.\n *\n * @param url URL string.\n *\n * @returns The URL string, modified if needed.\n */\nfunction stripTrailingSlash(url) {\n    const match = url.match(/#|\\?|$/);\n    const pathEndIdx = match && match.index || url.length;\n    const droppedSlashIdx = pathEndIdx - (url[pathEndIdx - 1] === '/' ? 1 : 0);\n    return url.slice(0, droppedSlashIdx) + url.slice(pathEndIdx);\n}\n/**\n * Normalizes URL parameters by prepending with `?` if needed.\n *\n * @param  params String of URL parameters.\n *\n * @returns The normalized URL parameters string.\n */\nfunction normalizeQueryParams(params) {\n    return params && params[0] !== '?' ? '?' + params : params;\n}\n\n/**\n * Enables the `Location` service to read route state from the browser's URL.\n * Angular provides two strategies:\n * `HashLocationStrategy` and `PathLocationStrategy`.\n *\n * Applications should use the `Router` or `Location` services to\n * interact with application route state.\n *\n * For instance, `HashLocationStrategy` produces URLs like\n * <code class=\"no-auto-link\">http://example.com#/foo</code>,\n * and `PathLocationStrategy` produces\n * <code class=\"no-auto-link\">http://example.com/foo</code> as an equivalent URL.\n *\n * See these two classes for more.\n *\n * @publicApi\n */\nclass LocationStrategy {\n    historyGo(relativePosition) {\n        throw new Error('Not implemented');\n    }\n}\nLocationStrategy.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: LocationStrategy, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nLocationStrategy.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: LocationStrategy, providedIn: 'root', useFactory: () => inject(PathLocationStrategy) });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: LocationStrategy, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root', useFactory: () => inject(PathLocationStrategy) }]\n        }] });\n/**\n * A predefined [DI token](guide/glossary#di-token) for the base href\n * to be used with the `PathLocationStrategy`.\n * The base href is the URL prefix that should be preserved when generating\n * and recognizing URLs.\n *\n * @usageNotes\n *\n * The following example shows how to use this token to configure the root app injector\n * with a base href value, so that the DI framework can supply the dependency anywhere in the app.\n *\n * ```typescript\n * import {Component, NgModule} from '@angular/core';\n * import {APP_BASE_HREF} from '@angular/common';\n *\n * @NgModule({\n *   providers: [{provide: APP_BASE_HREF, useValue: '/my/app'}]\n * })\n * class AppModule {}\n * ```\n *\n * @publicApi\n */\nconst APP_BASE_HREF = new InjectionToken('appBaseHref');\n/**\n * @description\n * A {@link LocationStrategy} used to configure the {@link Location} service to\n * represent its state in the\n * [path](https://en.wikipedia.org/wiki/Uniform_Resource_Locator#Syntax) of the\n * browser's URL.\n *\n * If you're using `PathLocationStrategy`, you may provide a {@link APP_BASE_HREF}\n * or add a `<base href>` element to the document to override the default.\n *\n * For instance, if you provide an `APP_BASE_HREF` of `'/my/app/'` and call\n * `location.go('/foo')`, the browser's URL will become\n * `example.com/my/app/foo`. To ensure all relative URIs resolve correctly,\n * the `<base href>` and/or `APP_BASE_HREF` should end with a `/`.\n *\n * Similarly, if you add `<base href='/my/app/'/>` to the document and call\n * `location.go('/foo')`, the browser's URL will become\n * `example.com/my/app/foo`.\n *\n * Note that when using `PathLocationStrategy`, neither the query nor\n * the fragment in the `<base href>` will be preserved, as outlined\n * by the [RFC](https://tools.ietf.org/html/rfc3986#section-5.2.2).\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example common/location/ts/path_location_component.ts region='LocationComponent'}\n *\n * @publicApi\n */\nclass PathLocationStrategy extends LocationStrategy {\n    constructor(_platformLocation, href) {\n        super();\n        this._platformLocation = _platformLocation;\n        this._removeListenerFns = [];\n        this._baseHref = href ?? this._platformLocation.getBaseHrefFromDOM() ??\n            inject(DOCUMENT).location?.origin ?? '';\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        while (this._removeListenerFns.length) {\n            this._removeListenerFns.pop()();\n        }\n    }\n    onPopState(fn) {\n        this._removeListenerFns.push(this._platformLocation.onPopState(fn), this._platformLocation.onHashChange(fn));\n    }\n    getBaseHref() {\n        return this._baseHref;\n    }\n    prepareExternalUrl(internal) {\n        return joinWithSlash(this._baseHref, internal);\n    }\n    path(includeHash = false) {\n        const pathname = this._platformLocation.pathname + normalizeQueryParams(this._platformLocation.search);\n        const hash = this._platformLocation.hash;\n        return hash && includeHash ? `${pathname}${hash}` : pathname;\n    }\n    pushState(state, title, url, queryParams) {\n        const externalUrl = this.prepareExternalUrl(url + normalizeQueryParams(queryParams));\n        this._platformLocation.pushState(state, title, externalUrl);\n    }\n    replaceState(state, title, url, queryParams) {\n        const externalUrl = this.prepareExternalUrl(url + normalizeQueryParams(queryParams));\n        this._platformLocation.replaceState(state, title, externalUrl);\n    }\n    forward() {\n        this._platformLocation.forward();\n    }\n    back() {\n        this._platformLocation.back();\n    }\n    getState() {\n        return this._platformLocation.getState();\n    }\n    historyGo(relativePosition = 0) {\n        this._platformLocation.historyGo?.(relativePosition);\n    }\n}\nPathLocationStrategy.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PathLocationStrategy, deps: [{ token: PlatformLocation }, { token: APP_BASE_HREF, optional: true }], target: i0.ɵɵFactoryTarget.Injectable });\nPathLocationStrategy.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PathLocationStrategy, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PathLocationStrategy, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return [{ type: PlatformLocation }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [APP_BASE_HREF]\n                }] }]; } });\n\n/**\n * @description\n * A {@link LocationStrategy} used to configure the {@link Location} service to\n * represent its state in the\n * [hash fragment](https://en.wikipedia.org/wiki/Uniform_Resource_Locator#Syntax)\n * of the browser's URL.\n *\n * For instance, if you call `location.go('/foo')`, the browser's URL will become\n * `example.com#/foo`.\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example common/location/ts/hash_location_component.ts region='LocationComponent'}\n *\n * @publicApi\n */\nclass HashLocationStrategy extends LocationStrategy {\n    constructor(_platformLocation, _baseHref) {\n        super();\n        this._platformLocation = _platformLocation;\n        this._baseHref = '';\n        this._removeListenerFns = [];\n        if (_baseHref != null) {\n            this._baseHref = _baseHref;\n        }\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        while (this._removeListenerFns.length) {\n            this._removeListenerFns.pop()();\n        }\n    }\n    onPopState(fn) {\n        this._removeListenerFns.push(this._platformLocation.onPopState(fn), this._platformLocation.onHashChange(fn));\n    }\n    getBaseHref() {\n        return this._baseHref;\n    }\n    path(includeHash = false) {\n        // the hash value is always prefixed with a `#`\n        // and if it is empty then it will stay empty\n        let path = this._platformLocation.hash;\n        if (path == null)\n            path = '#';\n        return path.length > 0 ? path.substring(1) : path;\n    }\n    prepareExternalUrl(internal) {\n        const url = joinWithSlash(this._baseHref, internal);\n        return url.length > 0 ? ('#' + url) : url;\n    }\n    pushState(state, title, path, queryParams) {\n        let url = this.prepareExternalUrl(path + normalizeQueryParams(queryParams));\n        if (url.length == 0) {\n            url = this._platformLocation.pathname;\n        }\n        this._platformLocation.pushState(state, title, url);\n    }\n    replaceState(state, title, path, queryParams) {\n        let url = this.prepareExternalUrl(path + normalizeQueryParams(queryParams));\n        if (url.length == 0) {\n            url = this._platformLocation.pathname;\n        }\n        this._platformLocation.replaceState(state, title, url);\n    }\n    forward() {\n        this._platformLocation.forward();\n    }\n    back() {\n        this._platformLocation.back();\n    }\n    getState() {\n        return this._platformLocation.getState();\n    }\n    historyGo(relativePosition = 0) {\n        this._platformLocation.historyGo?.(relativePosition);\n    }\n}\nHashLocationStrategy.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HashLocationStrategy, deps: [{ token: PlatformLocation }, { token: APP_BASE_HREF, optional: true }], target: i0.ɵɵFactoryTarget.Injectable });\nHashLocationStrategy.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HashLocationStrategy });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HashLocationStrategy, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: PlatformLocation }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [APP_BASE_HREF]\n                }] }]; } });\n\n/**\n * @description\n *\n * A service that applications can use to interact with a browser's URL.\n *\n * Depending on the `LocationStrategy` used, `Location` persists\n * to the URL's path or the URL's hash segment.\n *\n * @usageNotes\n *\n * It's better to use the `Router.navigate()` service to trigger route changes. Use\n * `Location` only if you need to interact with or create normalized URLs outside of\n * routing.\n *\n * `Location` is responsible for normalizing the URL against the application's base href.\n * A normalized URL is absolute from the URL host, includes the application's base href, and has no\n * trailing slash:\n * - `/my/app/user/123` is normalized\n * - `my/app/user/123` **is not** normalized\n * - `/my/app/user/123/` **is not** normalized\n *\n * ### Example\n *\n * <code-example path='common/location/ts/path_location_component.ts'\n * region='LocationComponent'></code-example>\n *\n * @publicApi\n */\nclass Location {\n    constructor(locationStrategy) {\n        /** @internal */\n        this._subject = new EventEmitter();\n        /** @internal */\n        this._urlChangeListeners = [];\n        /** @internal */\n        this._urlChangeSubscription = null;\n        this._locationStrategy = locationStrategy;\n        const baseHref = this._locationStrategy.getBaseHref();\n        // Note: This class's interaction with base HREF does not fully follow the rules\n        // outlined in the spec https://www.freesoft.org/CIE/RFC/1808/18.htm.\n        // Instead of trying to fix individual bugs with more and more code, we should\n        // investigate using the URL constructor and providing the base as a second\n        // argument.\n        // https://developer.mozilla.org/en-US/docs/Web/API/URL/URL#parameters\n        this._basePath = _stripOrigin(stripTrailingSlash(_stripIndexHtml(baseHref)));\n        this._locationStrategy.onPopState((ev) => {\n            this._subject.emit({\n                'url': this.path(true),\n                'pop': true,\n                'state': ev.state,\n                'type': ev.type,\n            });\n        });\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        this._urlChangeSubscription?.unsubscribe();\n        this._urlChangeListeners = [];\n    }\n    /**\n     * Normalizes the URL path for this location.\n     *\n     * @param includeHash True to include an anchor fragment in the path.\n     *\n     * @returns The normalized URL path.\n     */\n    // TODO: vsavkin. Remove the boolean flag and always include hash once the deprecated router is\n    // removed.\n    path(includeHash = false) {\n        return this.normalize(this._locationStrategy.path(includeHash));\n    }\n    /**\n     * Reports the current state of the location history.\n     * @returns The current value of the `history.state` object.\n     */\n    getState() {\n        return this._locationStrategy.getState();\n    }\n    /**\n     * Normalizes the given path and compares to the current normalized path.\n     *\n     * @param path The given URL path.\n     * @param query Query parameters.\n     *\n     * @returns True if the given URL path is equal to the current normalized path, false\n     * otherwise.\n     */\n    isCurrentPathEqualTo(path, query = '') {\n        return this.path() == this.normalize(path + normalizeQueryParams(query));\n    }\n    /**\n     * Normalizes a URL path by stripping any trailing slashes.\n     *\n     * @param url String representing a URL.\n     *\n     * @returns The normalized URL string.\n     */\n    normalize(url) {\n        return Location.stripTrailingSlash(_stripBasePath(this._basePath, _stripIndexHtml(url)));\n    }\n    /**\n     * Normalizes an external URL path.\n     * If the given URL doesn't begin with a leading slash (`'/'`), adds one\n     * before normalizing. Adds a hash if `HashLocationStrategy` is\n     * in use, or the `APP_BASE_HREF` if the `PathLocationStrategy` is in use.\n     *\n     * @param url String representing a URL.\n     *\n     * @returns  A normalized platform-specific URL.\n     */\n    prepareExternalUrl(url) {\n        if (url && url[0] !== '/') {\n            url = '/' + url;\n        }\n        return this._locationStrategy.prepareExternalUrl(url);\n    }\n    // TODO: rename this method to pushState\n    /**\n     * Changes the browser's URL to a normalized version of a given URL, and pushes a\n     * new item onto the platform's history.\n     *\n     * @param path  URL path to normalize.\n     * @param query Query parameters.\n     * @param state Location history state.\n     *\n     */\n    go(path, query = '', state = null) {\n        this._locationStrategy.pushState(state, '', path, query);\n        this._notifyUrlChangeListeners(this.prepareExternalUrl(path + normalizeQueryParams(query)), state);\n    }\n    /**\n     * Changes the browser's URL to a normalized version of the given URL, and replaces\n     * the top item on the platform's history stack.\n     *\n     * @param path  URL path to normalize.\n     * @param query Query parameters.\n     * @param state Location history state.\n     */\n    replaceState(path, query = '', state = null) {\n        this._locationStrategy.replaceState(state, '', path, query);\n        this._notifyUrlChangeListeners(this.prepareExternalUrl(path + normalizeQueryParams(query)), state);\n    }\n    /**\n     * Navigates forward in the platform's history.\n     */\n    forward() {\n        this._locationStrategy.forward();\n    }\n    /**\n     * Navigates back in the platform's history.\n     */\n    back() {\n        this._locationStrategy.back();\n    }\n    /**\n     * Navigate to a specific page from session history, identified by its relative position to the\n     * current page.\n     *\n     * @param relativePosition  Position of the target page in the history relative to the current\n     *     page.\n     * A negative value moves backwards, a positive value moves forwards, e.g. `location.historyGo(2)`\n     * moves forward two pages and `location.historyGo(-2)` moves back two pages. When we try to go\n     * beyond what's stored in the history session, we stay in the current page. Same behaviour occurs\n     * when `relativePosition` equals 0.\n     * @see https://developer.mozilla.org/en-US/docs/Web/API/History_API#Moving_to_a_specific_point_in_history\n     */\n    historyGo(relativePosition = 0) {\n        this._locationStrategy.historyGo?.(relativePosition);\n    }\n    /**\n     * Registers a URL change listener. Use to catch updates performed by the Angular\n     * framework that are not detectible through \"popstate\" or \"hashchange\" events.\n     *\n     * @param fn The change handler function, which take a URL and a location history state.\n     * @returns A function that, when executed, unregisters a URL change listener.\n     */\n    onUrlChange(fn) {\n        this._urlChangeListeners.push(fn);\n        if (!this._urlChangeSubscription) {\n            this._urlChangeSubscription = this.subscribe(v => {\n                this._notifyUrlChangeListeners(v.url, v.state);\n            });\n        }\n        return () => {\n            const fnIndex = this._urlChangeListeners.indexOf(fn);\n            this._urlChangeListeners.splice(fnIndex, 1);\n            if (this._urlChangeListeners.length === 0) {\n                this._urlChangeSubscription?.unsubscribe();\n                this._urlChangeSubscription = null;\n            }\n        };\n    }\n    /** @internal */\n    _notifyUrlChangeListeners(url = '', state) {\n        this._urlChangeListeners.forEach(fn => fn(url, state));\n    }\n    /**\n     * Subscribes to the platform's `popState` events.\n     *\n     * Note: `Location.go()` does not trigger the `popState` event in the browser. Use\n     * `Location.onUrlChange()` to subscribe to URL changes instead.\n     *\n     * @param value Event that is triggered when the state history changes.\n     * @param exception The exception to throw.\n     *\n     * @see [onpopstate](https://developer.mozilla.org/en-US/docs/Web/API/WindowEventHandlers/onpopstate)\n     *\n     * @returns Subscribed events.\n     */\n    subscribe(onNext, onThrow, onReturn) {\n        return this._subject.subscribe({ next: onNext, error: onThrow, complete: onReturn });\n    }\n}\n/**\n * Normalizes URL parameters by prepending with `?` if needed.\n *\n * @param  params String of URL parameters.\n *\n * @returns The normalized URL parameters string.\n */\nLocation.normalizeQueryParams = normalizeQueryParams;\n/**\n * Joins two parts of a URL with a slash if needed.\n *\n * @param start  URL string\n * @param end    URL string\n *\n *\n * @returns The joined URL string.\n */\nLocation.joinWithSlash = joinWithSlash;\n/**\n * Removes a trailing slash from a URL string if needed.\n * Looks for the first occurrence of either `#`, `?`, or the end of the\n * line as `/` characters and removes the trailing slash if one exists.\n *\n * @param url URL string.\n *\n * @returns The URL string, modified if needed.\n */\nLocation.stripTrailingSlash = stripTrailingSlash;\nLocation.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: Location, deps: [{ token: LocationStrategy }], target: i0.ɵɵFactoryTarget.Injectable });\nLocation.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: Location, providedIn: 'root', useFactory: createLocation });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: Location, decorators: [{\n            type: Injectable,\n            args: [{\n                    providedIn: 'root',\n                    // See #23917\n                    useFactory: createLocation,\n                }]\n        }], ctorParameters: function () { return [{ type: LocationStrategy }]; } });\nfunction createLocation() {\n    return new Location(ɵɵinject(LocationStrategy));\n}\nfunction _stripBasePath(basePath, url) {\n    if (!basePath || !url.startsWith(basePath)) {\n        return url;\n    }\n    const strippedUrl = url.substring(basePath.length);\n    if (strippedUrl === '' || ['/', ';', '?', '#'].includes(strippedUrl[0])) {\n        return strippedUrl;\n    }\n    return url;\n}\nfunction _stripIndexHtml(url) {\n    return url.replace(/\\/index.html$/, '');\n}\nfunction _stripOrigin(baseHref) {\n    // DO NOT REFACTOR! Previously, this check looked like this:\n    // `/^(https?:)?\\/\\//.test(baseHref)`, but that resulted in\n    // syntactically incorrect code after Closure Compiler minification.\n    // This was likely caused by a bug in Closure Compiler, but\n    // for now, the check is rewritten to use `new RegExp` instead.\n    const isAbsoluteUrl = (new RegExp('^(https?:)?//')).test(baseHref);\n    if (isAbsoluteUrl) {\n        const [, pathname] = baseHref.split(/\\/\\/[^\\/]+/);\n        return pathname;\n    }\n    return baseHref;\n}\n\n/** @internal */\nconst CURRENCIES_EN = { \"ADP\": [undefined, undefined, 0], \"AFN\": [undefined, \"؋\", 0], \"ALL\": [undefined, undefined, 0], \"AMD\": [undefined, \"֏\", 2], \"AOA\": [undefined, \"Kz\"], \"ARS\": [undefined, \"$\"], \"AUD\": [\"A$\", \"$\"], \"AZN\": [undefined, \"₼\"], \"BAM\": [undefined, \"KM\"], \"BBD\": [undefined, \"$\"], \"BDT\": [undefined, \"৳\"], \"BHD\": [undefined, undefined, 3], \"BIF\": [undefined, undefined, 0], \"BMD\": [undefined, \"$\"], \"BND\": [undefined, \"$\"], \"BOB\": [undefined, \"Bs\"], \"BRL\": [\"R$\"], \"BSD\": [undefined, \"$\"], \"BWP\": [undefined, \"P\"], \"BYN\": [undefined, undefined, 2], \"BYR\": [undefined, undefined, 0], \"BZD\": [undefined, \"$\"], \"CAD\": [\"CA$\", \"$\", 2], \"CHF\": [undefined, undefined, 2], \"CLF\": [undefined, undefined, 4], \"CLP\": [undefined, \"$\", 0], \"CNY\": [\"CN¥\", \"¥\"], \"COP\": [undefined, \"$\", 2], \"CRC\": [undefined, \"₡\", 2], \"CUC\": [undefined, \"$\"], \"CUP\": [undefined, \"$\"], \"CZK\": [undefined, \"Kč\", 2], \"DJF\": [undefined, undefined, 0], \"DKK\": [undefined, \"kr\", 2], \"DOP\": [undefined, \"$\"], \"EGP\": [undefined, \"E£\"], \"ESP\": [undefined, \"₧\", 0], \"EUR\": [\"€\"], \"FJD\": [undefined, \"$\"], \"FKP\": [undefined, \"£\"], \"GBP\": [\"£\"], \"GEL\": [undefined, \"₾\"], \"GHS\": [undefined, \"GH₵\"], \"GIP\": [undefined, \"£\"], \"GNF\": [undefined, \"FG\", 0], \"GTQ\": [undefined, \"Q\"], \"GYD\": [undefined, \"$\", 2], \"HKD\": [\"HK$\", \"$\"], \"HNL\": [undefined, \"L\"], \"HRK\": [undefined, \"kn\"], \"HUF\": [undefined, \"Ft\", 2], \"IDR\": [undefined, \"Rp\", 2], \"ILS\": [\"₪\"], \"INR\": [\"₹\"], \"IQD\": [undefined, undefined, 0], \"IRR\": [undefined, undefined, 0], \"ISK\": [undefined, \"kr\", 0], \"ITL\": [undefined, undefined, 0], \"JMD\": [undefined, \"$\"], \"JOD\": [undefined, undefined, 3], \"JPY\": [\"¥\", undefined, 0], \"KHR\": [undefined, \"៛\"], \"KMF\": [undefined, \"CF\", 0], \"KPW\": [undefined, \"₩\", 0], \"KRW\": [\"₩\", undefined, 0], \"KWD\": [undefined, undefined, 3], \"KYD\": [undefined, \"$\"], \"KZT\": [undefined, \"₸\"], \"LAK\": [undefined, \"₭\", 0], \"LBP\": [undefined, \"L£\", 0], \"LKR\": [undefined, \"Rs\"], \"LRD\": [undefined, \"$\"], \"LTL\": [undefined, \"Lt\"], \"LUF\": [undefined, undefined, 0], \"LVL\": [undefined, \"Ls\"], \"LYD\": [undefined, undefined, 3], \"MGA\": [undefined, \"Ar\", 0], \"MGF\": [undefined, undefined, 0], \"MMK\": [undefined, \"K\", 0], \"MNT\": [undefined, \"₮\", 2], \"MRO\": [undefined, undefined, 0], \"MUR\": [undefined, \"Rs\", 2], \"MXN\": [\"MX$\", \"$\"], \"MYR\": [undefined, \"RM\"], \"NAD\": [undefined, \"$\"], \"NGN\": [undefined, \"₦\"], \"NIO\": [undefined, \"C$\"], \"NOK\": [undefined, \"kr\", 2], \"NPR\": [undefined, \"Rs\"], \"NZD\": [\"NZ$\", \"$\"], \"OMR\": [undefined, undefined, 3], \"PHP\": [\"₱\"], \"PKR\": [undefined, \"Rs\", 2], \"PLN\": [undefined, \"zł\"], \"PYG\": [undefined, \"₲\", 0], \"RON\": [undefined, \"lei\"], \"RSD\": [undefined, undefined, 0], \"RUB\": [undefined, \"₽\"], \"RWF\": [undefined, \"RF\", 0], \"SBD\": [undefined, \"$\"], \"SEK\": [undefined, \"kr\", 2], \"SGD\": [undefined, \"$\"], \"SHP\": [undefined, \"£\"], \"SLE\": [undefined, undefined, 2], \"SLL\": [undefined, undefined, 0], \"SOS\": [undefined, undefined, 0], \"SRD\": [undefined, \"$\"], \"SSP\": [undefined, \"£\"], \"STD\": [undefined, undefined, 0], \"STN\": [undefined, \"Db\"], \"SYP\": [undefined, \"£\", 0], \"THB\": [undefined, \"฿\"], \"TMM\": [undefined, undefined, 0], \"TND\": [undefined, undefined, 3], \"TOP\": [undefined, \"T$\"], \"TRL\": [undefined, undefined, 0], \"TRY\": [undefined, \"₺\"], \"TTD\": [undefined, \"$\"], \"TWD\": [\"NT$\", \"$\", 2], \"TZS\": [undefined, undefined, 2], \"UAH\": [undefined, \"₴\"], \"UGX\": [undefined, undefined, 0], \"USD\": [\"$\"], \"UYI\": [undefined, undefined, 0], \"UYU\": [undefined, \"$\"], \"UYW\": [undefined, undefined, 4], \"UZS\": [undefined, undefined, 2], \"VEF\": [undefined, \"Bs\", 2], \"VND\": [\"₫\", undefined, 0], \"VUV\": [undefined, undefined, 0], \"XAF\": [\"FCFA\", undefined, 0], \"XCD\": [\"EC$\", \"$\"], \"XOF\": [\"F CFA\", undefined, 0], \"XPF\": [\"CFPF\", undefined, 0], \"XXX\": [\"¤\"], \"YER\": [undefined, undefined, 0], \"ZAR\": [undefined, \"R\"], \"ZMK\": [undefined, undefined, 0], \"ZMW\": [undefined, \"ZK\"], \"ZWD\": [undefined, undefined, 0] };\n\n/**\n * Format styles that can be used to represent numbers.\n * @see `getLocaleNumberFormat()`.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nvar NumberFormatStyle;\n(function (NumberFormatStyle) {\n    NumberFormatStyle[NumberFormatStyle[\"Decimal\"] = 0] = \"Decimal\";\n    NumberFormatStyle[NumberFormatStyle[\"Percent\"] = 1] = \"Percent\";\n    NumberFormatStyle[NumberFormatStyle[\"Currency\"] = 2] = \"Currency\";\n    NumberFormatStyle[NumberFormatStyle[\"Scientific\"] = 3] = \"Scientific\";\n})(NumberFormatStyle || (NumberFormatStyle = {}));\n/**\n * Plurality cases used for translating plurals to different languages.\n *\n * @see `NgPlural`\n * @see `NgPluralCase`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nvar Plural;\n(function (Plural) {\n    Plural[Plural[\"Zero\"] = 0] = \"Zero\";\n    Plural[Plural[\"One\"] = 1] = \"One\";\n    Plural[Plural[\"Two\"] = 2] = \"Two\";\n    Plural[Plural[\"Few\"] = 3] = \"Few\";\n    Plural[Plural[\"Many\"] = 4] = \"Many\";\n    Plural[Plural[\"Other\"] = 5] = \"Other\";\n})(Plural || (Plural = {}));\n/**\n * Context-dependant translation forms for strings.\n * Typically the standalone version is for the nominative form of the word,\n * and the format version is used for the genitive case.\n * @see [CLDR website](http://cldr.unicode.org/translation/date-time-1/date-time#TOC-Standalone-vs.-Format-Styles)\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nvar FormStyle;\n(function (FormStyle) {\n    FormStyle[FormStyle[\"Format\"] = 0] = \"Format\";\n    FormStyle[FormStyle[\"Standalone\"] = 1] = \"Standalone\";\n})(FormStyle || (FormStyle = {}));\n/**\n * String widths available for translations.\n * The specific character widths are locale-specific.\n * Examples are given for the word \"Sunday\" in English.\n *\n * @publicApi\n */\nvar TranslationWidth;\n(function (TranslationWidth) {\n    /** 1 character for `en-US`. For example: 'S' */\n    TranslationWidth[TranslationWidth[\"Narrow\"] = 0] = \"Narrow\";\n    /** 3 characters for `en-US`. For example: 'Sun' */\n    TranslationWidth[TranslationWidth[\"Abbreviated\"] = 1] = \"Abbreviated\";\n    /** Full length for `en-US`. For example: \"Sunday\" */\n    TranslationWidth[TranslationWidth[\"Wide\"] = 2] = \"Wide\";\n    /** 2 characters for `en-US`, For example: \"Su\" */\n    TranslationWidth[TranslationWidth[\"Short\"] = 3] = \"Short\";\n})(TranslationWidth || (TranslationWidth = {}));\n/**\n * String widths available for date-time formats.\n * The specific character widths are locale-specific.\n * Examples are given for `en-US`.\n *\n * @see `getLocaleDateFormat()`\n * @see `getLocaleTimeFormat()`\n * @see `getLocaleDateTimeFormat()`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n * @publicApi\n */\nvar FormatWidth;\n(function (FormatWidth) {\n    /**\n     * For `en-US`, 'M/d/yy, h:mm a'`\n     * (Example: `6/15/15, 9:03 AM`)\n     */\n    FormatWidth[FormatWidth[\"Short\"] = 0] = \"Short\";\n    /**\n     * For `en-US`, `'MMM d, y, h:mm:ss a'`\n     * (Example: `Jun 15, 2015, 9:03:01 AM`)\n     */\n    FormatWidth[FormatWidth[\"Medium\"] = 1] = \"Medium\";\n    /**\n     * For `en-US`, `'MMMM d, y, h:mm:ss a z'`\n     * (Example: `June 15, 2015 at 9:03:01 AM GMT+1`)\n     */\n    FormatWidth[FormatWidth[\"Long\"] = 2] = \"Long\";\n    /**\n     * For `en-US`, `'EEEE, MMMM d, y, h:mm:ss a zzzz'`\n     * (Example: `Monday, June 15, 2015 at 9:03:01 AM GMT+01:00`)\n     */\n    FormatWidth[FormatWidth[\"Full\"] = 3] = \"Full\";\n})(FormatWidth || (FormatWidth = {}));\n/**\n * Symbols that can be used to replace placeholders in number patterns.\n * Examples are based on `en-US` values.\n *\n * @see `getLocaleNumberSymbol()`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nvar NumberSymbol;\n(function (NumberSymbol) {\n    /**\n     * Decimal separator.\n     * For `en-US`, the dot character.\n     * Example: 2,345`.`67\n     */\n    NumberSymbol[NumberSymbol[\"Decimal\"] = 0] = \"Decimal\";\n    /**\n     * Grouping separator, typically for thousands.\n     * For `en-US`, the comma character.\n     * Example: 2`,`345.67\n     */\n    NumberSymbol[NumberSymbol[\"Group\"] = 1] = \"Group\";\n    /**\n     * List-item separator.\n     * Example: \"one, two, and three\"\n     */\n    NumberSymbol[NumberSymbol[\"List\"] = 2] = \"List\";\n    /**\n     * Sign for percentage (out of 100).\n     * Example: 23.4%\n     */\n    NumberSymbol[NumberSymbol[\"PercentSign\"] = 3] = \"PercentSign\";\n    /**\n     * Sign for positive numbers.\n     * Example: +23\n     */\n    NumberSymbol[NumberSymbol[\"PlusSign\"] = 4] = \"PlusSign\";\n    /**\n     * Sign for negative numbers.\n     * Example: -23\n     */\n    NumberSymbol[NumberSymbol[\"MinusSign\"] = 5] = \"MinusSign\";\n    /**\n     * Computer notation for exponential value (n times a power of 10).\n     * Example: 1.2E3\n     */\n    NumberSymbol[NumberSymbol[\"Exponential\"] = 6] = \"Exponential\";\n    /**\n     * Human-readable format of exponential.\n     * Example: 1.2x103\n     */\n    NumberSymbol[NumberSymbol[\"SuperscriptingExponent\"] = 7] = \"SuperscriptingExponent\";\n    /**\n     * Sign for permille (out of 1000).\n     * Example: 23.4‰\n     */\n    NumberSymbol[NumberSymbol[\"PerMille\"] = 8] = \"PerMille\";\n    /**\n     * Infinity, can be used with plus and minus.\n     * Example: ∞, +∞, -∞\n     */\n    NumberSymbol[NumberSymbol[\"Infinity\"] = 9] = \"Infinity\";\n    /**\n     * Not a number.\n     * Example: NaN\n     */\n    NumberSymbol[NumberSymbol[\"NaN\"] = 10] = \"NaN\";\n    /**\n     * Symbol used between time units.\n     * Example: 10:52\n     */\n    NumberSymbol[NumberSymbol[\"TimeSeparator\"] = 11] = \"TimeSeparator\";\n    /**\n     * Decimal separator for currency values (fallback to `Decimal`).\n     * Example: $2,345.67\n     */\n    NumberSymbol[NumberSymbol[\"CurrencyDecimal\"] = 12] = \"CurrencyDecimal\";\n    /**\n     * Group separator for currency values (fallback to `Group`).\n     * Example: $2,345.67\n     */\n    NumberSymbol[NumberSymbol[\"CurrencyGroup\"] = 13] = \"CurrencyGroup\";\n})(NumberSymbol || (NumberSymbol = {}));\n/**\n * The value for each day of the week, based on the `en-US` locale\n *\n * @publicApi\n */\nvar WeekDay;\n(function (WeekDay) {\n    WeekDay[WeekDay[\"Sunday\"] = 0] = \"Sunday\";\n    WeekDay[WeekDay[\"Monday\"] = 1] = \"Monday\";\n    WeekDay[WeekDay[\"Tuesday\"] = 2] = \"Tuesday\";\n    WeekDay[WeekDay[\"Wednesday\"] = 3] = \"Wednesday\";\n    WeekDay[WeekDay[\"Thursday\"] = 4] = \"Thursday\";\n    WeekDay[WeekDay[\"Friday\"] = 5] = \"Friday\";\n    WeekDay[WeekDay[\"Saturday\"] = 6] = \"Saturday\";\n})(WeekDay || (WeekDay = {}));\n/**\n * Retrieves the locale ID from the currently loaded locale.\n * The loaded locale could be, for example, a global one rather than a regional one.\n * @param locale A locale code, such as `fr-FR`.\n * @returns The locale code. For example, `fr`.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleId(locale) {\n    return ɵfindLocaleData(locale)[ɵLocaleDataIndex.LocaleId];\n}\n/**\n * Retrieves day period strings for the given locale.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param formStyle The required grammatical form.\n * @param width The required character width.\n * @returns An array of localized period strings. For example, `[AM, PM]` for `en-US`.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleDayPeriods(locale, formStyle, width) {\n    const data = ɵfindLocaleData(locale);\n    const amPmData = [\n        data[ɵLocaleDataIndex.DayPeriodsFormat], data[ɵLocaleDataIndex.DayPeriodsStandalone]\n    ];\n    const amPm = getLastDefinedValue(amPmData, formStyle);\n    return getLastDefinedValue(amPm, width);\n}\n/**\n * Retrieves days of the week for the given locale, using the Gregorian calendar.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param formStyle The required grammatical form.\n * @param width The required character width.\n * @returns An array of localized name strings.\n * For example,`[Sunday, Monday, ... Saturday]` for `en-US`.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleDayNames(locale, formStyle, width) {\n    const data = ɵfindLocaleData(locale);\n    const daysData = [data[ɵLocaleDataIndex.DaysFormat], data[ɵLocaleDataIndex.DaysStandalone]];\n    const days = getLastDefinedValue(daysData, formStyle);\n    return getLastDefinedValue(days, width);\n}\n/**\n * Retrieves months of the year for the given locale, using the Gregorian calendar.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param formStyle The required grammatical form.\n * @param width The required character width.\n * @returns An array of localized name strings.\n * For example,  `[January, February, ...]` for `en-US`.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleMonthNames(locale, formStyle, width) {\n    const data = ɵfindLocaleData(locale);\n    const monthsData = [data[ɵLocaleDataIndex.MonthsFormat], data[ɵLocaleDataIndex.MonthsStandalone]];\n    const months = getLastDefinedValue(monthsData, formStyle);\n    return getLastDefinedValue(months, width);\n}\n/**\n * Retrieves Gregorian-calendar eras for the given locale.\n * @param locale A locale code for the locale format rules to use.\n * @param width The required character width.\n\n * @returns An array of localized era strings.\n * For example, `[AD, BC]` for `en-US`.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleEraNames(locale, width) {\n    const data = ɵfindLocaleData(locale);\n    const erasData = data[ɵLocaleDataIndex.Eras];\n    return getLastDefinedValue(erasData, width);\n}\n/**\n * Retrieves the first day of the week for the given locale.\n *\n * @param locale A locale code for the locale format rules to use.\n * @returns A day index number, using the 0-based week-day index for `en-US`\n * (Sunday = 0, Monday = 1, ...).\n * For example, for `fr-FR`, returns 1 to indicate that the first day is Monday.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleFirstDayOfWeek(locale) {\n    const data = ɵfindLocaleData(locale);\n    return data[ɵLocaleDataIndex.FirstDayOfWeek];\n}\n/**\n * Range of week days that are considered the week-end for the given locale.\n *\n * @param locale A locale code for the locale format rules to use.\n * @returns The range of day values, `[startDay, endDay]`.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleWeekEndRange(locale) {\n    const data = ɵfindLocaleData(locale);\n    return data[ɵLocaleDataIndex.WeekendRange];\n}\n/**\n * Retrieves a localized date-value formatting string.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param width The format type.\n * @returns The localized formatting string.\n * @see `FormatWidth`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleDateFormat(locale, width) {\n    const data = ɵfindLocaleData(locale);\n    return getLastDefinedValue(data[ɵLocaleDataIndex.DateFormat], width);\n}\n/**\n * Retrieves a localized time-value formatting string.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param width The format type.\n * @returns The localized formatting string.\n * @see `FormatWidth`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n\n * @publicApi\n */\nfunction getLocaleTimeFormat(locale, width) {\n    const data = ɵfindLocaleData(locale);\n    return getLastDefinedValue(data[ɵLocaleDataIndex.TimeFormat], width);\n}\n/**\n * Retrieves a localized date-time formatting string.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param width The format type.\n * @returns The localized formatting string.\n * @see `FormatWidth`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleDateTimeFormat(locale, width) {\n    const data = ɵfindLocaleData(locale);\n    const dateTimeFormatData = data[ɵLocaleDataIndex.DateTimeFormat];\n    return getLastDefinedValue(dateTimeFormatData, width);\n}\n/**\n * Retrieves a localized number symbol that can be used to replace placeholders in number formats.\n * @param locale The locale code.\n * @param symbol The symbol to localize.\n * @returns The character for the localized symbol.\n * @see `NumberSymbol`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleNumberSymbol(locale, symbol) {\n    const data = ɵfindLocaleData(locale);\n    const res = data[ɵLocaleDataIndex.NumberSymbols][symbol];\n    if (typeof res === 'undefined') {\n        if (symbol === NumberSymbol.CurrencyDecimal) {\n            return data[ɵLocaleDataIndex.NumberSymbols][NumberSymbol.Decimal];\n        }\n        else if (symbol === NumberSymbol.CurrencyGroup) {\n            return data[ɵLocaleDataIndex.NumberSymbols][NumberSymbol.Group];\n        }\n    }\n    return res;\n}\n/**\n * Retrieves a number format for a given locale.\n *\n * Numbers are formatted using patterns, like `#,###.00`. For example, the pattern `#,###.00`\n * when used to format the number 12345.678 could result in \"12'345,678\". That would happen if the\n * grouping separator for your language is an apostrophe, and the decimal separator is a comma.\n *\n * <b>Important:</b> The characters `.` `,` `0` `#` (and others below) are special placeholders\n * that stand for the decimal separator, and so on, and are NOT real characters.\n * You must NOT \"translate\" the placeholders. For example, don't change `.` to `,` even though in\n * your language the decimal point is written with a comma. The symbols should be replaced by the\n * local equivalents, using the appropriate `NumberSymbol` for your language.\n *\n * Here are the special characters used in number patterns:\n *\n * | Symbol | Meaning |\n * |--------|---------|\n * | . | Replaced automatically by the character used for the decimal point. |\n * | , | Replaced by the \"grouping\" (thousands) separator. |\n * | 0 | Replaced by a digit (or zero if there aren't enough digits). |\n * | # | Replaced by a digit (or nothing if there aren't enough). |\n * | ¤ | Replaced by a currency symbol, such as $ or USD. |\n * | % | Marks a percent format. The % symbol may change position, but must be retained. |\n * | E | Marks a scientific format. The E symbol may change position, but must be retained. |\n * | ' | Special characters used as literal characters are quoted with ASCII single quotes. |\n *\n * @param locale A locale code for the locale format rules to use.\n * @param type The type of numeric value to be formatted (such as `Decimal` or `Currency`.)\n * @returns The localized format string.\n * @see `NumberFormatStyle`\n * @see [CLDR website](http://cldr.unicode.org/translation/number-patterns)\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleNumberFormat(locale, type) {\n    const data = ɵfindLocaleData(locale);\n    return data[ɵLocaleDataIndex.NumberFormats][type];\n}\n/**\n * Retrieves the symbol used to represent the currency for the main country\n * corresponding to a given locale. For example, '$' for `en-US`.\n *\n * @param locale A locale code for the locale format rules to use.\n * @returns The localized symbol character,\n * or `null` if the main country cannot be determined.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleCurrencySymbol(locale) {\n    const data = ɵfindLocaleData(locale);\n    return data[ɵLocaleDataIndex.CurrencySymbol] || null;\n}\n/**\n * Retrieves the name of the currency for the main country corresponding\n * to a given locale. For example, 'US Dollar' for `en-US`.\n * @param locale A locale code for the locale format rules to use.\n * @returns The currency name,\n * or `null` if the main country cannot be determined.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleCurrencyName(locale) {\n    const data = ɵfindLocaleData(locale);\n    return data[ɵLocaleDataIndex.CurrencyName] || null;\n}\n/**\n * Retrieves the default currency code for the given locale.\n *\n * The default is defined as the first currency which is still in use.\n *\n * @param locale The code of the locale whose currency code we want.\n * @returns The code of the default currency for the given locale.\n *\n * @publicApi\n */\nfunction getLocaleCurrencyCode(locale) {\n    return ɵgetLocaleCurrencyCode(locale);\n}\n/**\n * Retrieves the currency values for a given locale.\n * @param locale A locale code for the locale format rules to use.\n * @returns The currency values.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n */\nfunction getLocaleCurrencies(locale) {\n    const data = ɵfindLocaleData(locale);\n    return data[ɵLocaleDataIndex.Currencies];\n}\n/**\n * @alias core/ɵgetLocalePluralCase\n * @publicApi\n */\nconst getLocalePluralCase = ɵgetLocalePluralCase;\nfunction checkFullData(data) {\n    if (!data[ɵLocaleDataIndex.ExtraData]) {\n        throw new Error(`Missing extra locale data for the locale \"${data[ɵLocaleDataIndex\n            .LocaleId]}\". Use \"registerLocaleData\" to load new data. See the \"I18n guide\" on angular.io to know more.`);\n    }\n}\n/**\n * Retrieves locale-specific rules used to determine which day period to use\n * when more than one period is defined for a locale.\n *\n * There is a rule for each defined day period. The\n * first rule is applied to the first day period and so on.\n * Fall back to AM/PM when no rules are available.\n *\n * A rule can specify a period as time range, or as a single time value.\n *\n * This functionality is only available when you have loaded the full locale data.\n * See the [\"I18n guide\"](guide/i18n-common-format-data-locale).\n *\n * @param locale A locale code for the locale format rules to use.\n * @returns The rules for the locale, a single time value or array of *from-time, to-time*,\n * or null if no periods are available.\n *\n * @see `getLocaleExtraDayPeriods()`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleExtraDayPeriodRules(locale) {\n    const data = ɵfindLocaleData(locale);\n    checkFullData(data);\n    const rules = data[ɵLocaleDataIndex.ExtraData][2 /* ɵExtraLocaleDataIndex.ExtraDayPeriodsRules */] || [];\n    return rules.map((rule) => {\n        if (typeof rule === 'string') {\n            return extractTime(rule);\n        }\n        return [extractTime(rule[0]), extractTime(rule[1])];\n    });\n}\n/**\n * Retrieves locale-specific day periods, which indicate roughly how a day is broken up\n * in different languages.\n * For example, for `en-US`, periods are morning, noon, afternoon, evening, and midnight.\n *\n * This functionality is only available when you have loaded the full locale data.\n * See the [\"I18n guide\"](guide/i18n-common-format-data-locale).\n *\n * @param locale A locale code for the locale format rules to use.\n * @param formStyle The required grammatical form.\n * @param width The required character width.\n * @returns The translated day-period strings.\n * @see `getLocaleExtraDayPeriodRules()`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLocaleExtraDayPeriods(locale, formStyle, width) {\n    const data = ɵfindLocaleData(locale);\n    checkFullData(data);\n    const dayPeriodsData = [\n        data[ɵLocaleDataIndex.ExtraData][0 /* ɵExtraLocaleDataIndex.ExtraDayPeriodFormats */],\n        data[ɵLocaleDataIndex.ExtraData][1 /* ɵExtraLocaleDataIndex.ExtraDayPeriodStandalone */]\n    ];\n    const dayPeriods = getLastDefinedValue(dayPeriodsData, formStyle) || [];\n    return getLastDefinedValue(dayPeriods, width) || [];\n}\n/**\n * Retrieves the writing direction of a specified locale\n * @param locale A locale code for the locale format rules to use.\n * @publicApi\n * @returns 'rtl' or 'ltr'\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n */\nfunction getLocaleDirection(locale) {\n    const data = ɵfindLocaleData(locale);\n    return data[ɵLocaleDataIndex.Directionality];\n}\n/**\n * Retrieves the first value that is defined in an array, going backwards from an index position.\n *\n * To avoid repeating the same data (as when the \"format\" and \"standalone\" forms are the same)\n * add the first value to the locale data arrays, and add other values only if they are different.\n *\n * @param data The data array to retrieve from.\n * @param index A 0-based index into the array to start from.\n * @returns The value immediately before the given index position.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getLastDefinedValue(data, index) {\n    for (let i = index; i > -1; i--) {\n        if (typeof data[i] !== 'undefined') {\n            return data[i];\n        }\n    }\n    throw new Error('Locale data API: locale data undefined');\n}\n/**\n * Extracts the hours and minutes from a string like \"15:45\"\n */\nfunction extractTime(time) {\n    const [h, m] = time.split(':');\n    return { hours: +h, minutes: +m };\n}\n/**\n * Retrieves the currency symbol for a given currency code.\n *\n * For example, for the default `en-US` locale, the code `USD` can\n * be represented by the narrow symbol `$` or the wide symbol `US$`.\n *\n * @param code The currency code.\n * @param format The format, `wide` or `narrow`.\n * @param locale A locale code for the locale format rules to use.\n *\n * @returns The symbol, or the currency code if no symbol is available.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getCurrencySymbol(code, format, locale = 'en') {\n    const currency = getLocaleCurrencies(locale)[code] || CURRENCIES_EN[code] || [];\n    const symbolNarrow = currency[1 /* ɵCurrencyIndex.SymbolNarrow */];\n    if (format === 'narrow' && typeof symbolNarrow === 'string') {\n        return symbolNarrow;\n    }\n    return currency[0 /* ɵCurrencyIndex.Symbol */] || code;\n}\n// Most currencies have cents, that's why the default is 2\nconst DEFAULT_NB_OF_CURRENCY_DIGITS = 2;\n/**\n * Reports the number of decimal digits for a given currency.\n * The value depends upon the presence of cents in that particular currency.\n *\n * @param code The currency code.\n * @returns The number of decimal digits, typically 0 or 2.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction getNumberOfCurrencyDigits(code) {\n    let digits;\n    const currency = CURRENCIES_EN[code];\n    if (currency) {\n        digits = currency[2 /* ɵCurrencyIndex.NbOfDigits */];\n    }\n    return typeof digits === 'number' ? digits : DEFAULT_NB_OF_CURRENCY_DIGITS;\n}\n\nconst ISO8601_DATE_REGEX = /^(\\d{4,})-?(\\d\\d)-?(\\d\\d)(?:T(\\d\\d)(?::?(\\d\\d)(?::?(\\d\\d)(?:\\.(\\d+))?)?)?(Z|([+-])(\\d\\d):?(\\d\\d))?)?$/;\n//    1        2       3         4          5          6          7          8  9     10      11\nconst NAMED_FORMATS = {};\nconst DATE_FORMATS_SPLIT = /((?:[^BEGHLMOSWYZabcdhmswyz']+)|(?:'(?:[^']|'')*')|(?:G{1,5}|y{1,4}|Y{1,4}|M{1,5}|L{1,5}|w{1,2}|W{1}|d{1,2}|E{1,6}|c{1,6}|a{1,5}|b{1,5}|B{1,5}|h{1,2}|H{1,2}|m{1,2}|s{1,2}|S{1,3}|z{1,4}|Z{1,5}|O{1,4}))([\\s\\S]*)/;\nvar ZoneWidth;\n(function (ZoneWidth) {\n    ZoneWidth[ZoneWidth[\"Short\"] = 0] = \"Short\";\n    ZoneWidth[ZoneWidth[\"ShortGMT\"] = 1] = \"ShortGMT\";\n    ZoneWidth[ZoneWidth[\"Long\"] = 2] = \"Long\";\n    ZoneWidth[ZoneWidth[\"Extended\"] = 3] = \"Extended\";\n})(ZoneWidth || (ZoneWidth = {}));\nvar DateType;\n(function (DateType) {\n    DateType[DateType[\"FullYear\"] = 0] = \"FullYear\";\n    DateType[DateType[\"Month\"] = 1] = \"Month\";\n    DateType[DateType[\"Date\"] = 2] = \"Date\";\n    DateType[DateType[\"Hours\"] = 3] = \"Hours\";\n    DateType[DateType[\"Minutes\"] = 4] = \"Minutes\";\n    DateType[DateType[\"Seconds\"] = 5] = \"Seconds\";\n    DateType[DateType[\"FractionalSeconds\"] = 6] = \"FractionalSeconds\";\n    DateType[DateType[\"Day\"] = 7] = \"Day\";\n})(DateType || (DateType = {}));\nvar TranslationType;\n(function (TranslationType) {\n    TranslationType[TranslationType[\"DayPeriods\"] = 0] = \"DayPeriods\";\n    TranslationType[TranslationType[\"Days\"] = 1] = \"Days\";\n    TranslationType[TranslationType[\"Months\"] = 2] = \"Months\";\n    TranslationType[TranslationType[\"Eras\"] = 3] = \"Eras\";\n})(TranslationType || (TranslationType = {}));\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a date according to locale rules.\n *\n * @param value The date to format, as a Date, or a number (milliseconds since UTC epoch)\n * or an [ISO date-time string](https://www.w3.org/TR/NOTE-datetime).\n * @param format The date-time components to include. See `DatePipe` for details.\n * @param locale A locale code for the locale format rules to use.\n * @param timezone The time zone. A time zone offset from GMT (such as `'+0430'`),\n * or a standard UTC/GMT or continental US time zone abbreviation.\n * If not specified, uses host system settings.\n *\n * @returns The formatted date string.\n *\n * @see `DatePipe`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction formatDate(value, format, locale, timezone) {\n    let date = toDate(value);\n    const namedFormat = getNamedFormat(locale, format);\n    format = namedFormat || format;\n    let parts = [];\n    let match;\n    while (format) {\n        match = DATE_FORMATS_SPLIT.exec(format);\n        if (match) {\n            parts = parts.concat(match.slice(1));\n            const part = parts.pop();\n            if (!part) {\n                break;\n            }\n            format = part;\n        }\n        else {\n            parts.push(format);\n            break;\n        }\n    }\n    let dateTimezoneOffset = date.getTimezoneOffset();\n    if (timezone) {\n        dateTimezoneOffset = timezoneToOffset(timezone, dateTimezoneOffset);\n        date = convertTimezoneToLocal(date, timezone, true);\n    }\n    let text = '';\n    parts.forEach(value => {\n        const dateFormatter = getDateFormatter(value);\n        text += dateFormatter ? dateFormatter(date, locale, dateTimezoneOffset) :\n            value === '\\'\\'' ? '\\'' :\n                value.replace(/(^'|'$)/g, '').replace(/''/g, '\\'');\n    });\n    return text;\n}\n/**\n * Create a new Date object with the given date value, and the time set to midnight.\n *\n * We cannot use `new Date(year, month, date)` because it maps years between 0 and 99 to 1900-1999.\n * See: https://github.com/angular/angular/issues/40377\n *\n * Note that this function returns a Date object whose time is midnight in the current locale's\n * timezone. In the future we might want to change this to be midnight in UTC, but this would be a\n * considerable breaking change.\n */\nfunction createDate(year, month, date) {\n    // The `newDate` is set to midnight (UTC) on January 1st 1970.\n    // - In PST this will be December 31st 1969 at 4pm.\n    // - In GMT this will be January 1st 1970 at 1am.\n    // Note that they even have different years, dates and months!\n    const newDate = new Date(0);\n    // `setFullYear()` allows years like 0001 to be set correctly. This function does not\n    // change the internal time of the date.\n    // Consider calling `setFullYear(2019, 8, 20)` (September 20, 2019).\n    // - In PST this will now be September 20, 2019 at 4pm\n    // - In GMT this will now be September 20, 2019 at 1am\n    newDate.setFullYear(year, month, date);\n    // We want the final date to be at local midnight, so we reset the time.\n    // - In PST this will now be September 20, 2019 at 12am\n    // - In GMT this will now be September 20, 2019 at 12am\n    newDate.setHours(0, 0, 0);\n    return newDate;\n}\nfunction getNamedFormat(locale, format) {\n    const localeId = getLocaleId(locale);\n    NAMED_FORMATS[localeId] = NAMED_FORMATS[localeId] || {};\n    if (NAMED_FORMATS[localeId][format]) {\n        return NAMED_FORMATS[localeId][format];\n    }\n    let formatValue = '';\n    switch (format) {\n        case 'shortDate':\n            formatValue = getLocaleDateFormat(locale, FormatWidth.Short);\n            break;\n        case 'mediumDate':\n            formatValue = getLocaleDateFormat(locale, FormatWidth.Medium);\n            break;\n        case 'longDate':\n            formatValue = getLocaleDateFormat(locale, FormatWidth.Long);\n            break;\n        case 'fullDate':\n            formatValue = getLocaleDateFormat(locale, FormatWidth.Full);\n            break;\n        case 'shortTime':\n            formatValue = getLocaleTimeFormat(locale, FormatWidth.Short);\n            break;\n        case 'mediumTime':\n            formatValue = getLocaleTimeFormat(locale, FormatWidth.Medium);\n            break;\n        case 'longTime':\n            formatValue = getLocaleTimeFormat(locale, FormatWidth.Long);\n            break;\n        case 'fullTime':\n            formatValue = getLocaleTimeFormat(locale, FormatWidth.Full);\n            break;\n        case 'short':\n            const shortTime = getNamedFormat(locale, 'shortTime');\n            const shortDate = getNamedFormat(locale, 'shortDate');\n            formatValue = formatDateTime(getLocaleDateTimeFormat(locale, FormatWidth.Short), [shortTime, shortDate]);\n            break;\n        case 'medium':\n            const mediumTime = getNamedFormat(locale, 'mediumTime');\n            const mediumDate = getNamedFormat(locale, 'mediumDate');\n            formatValue = formatDateTime(getLocaleDateTimeFormat(locale, FormatWidth.Medium), [mediumTime, mediumDate]);\n            break;\n        case 'long':\n            const longTime = getNamedFormat(locale, 'longTime');\n            const longDate = getNamedFormat(locale, 'longDate');\n            formatValue =\n                formatDateTime(getLocaleDateTimeFormat(locale, FormatWidth.Long), [longTime, longDate]);\n            break;\n        case 'full':\n            const fullTime = getNamedFormat(locale, 'fullTime');\n            const fullDate = getNamedFormat(locale, 'fullDate');\n            formatValue =\n                formatDateTime(getLocaleDateTimeFormat(locale, FormatWidth.Full), [fullTime, fullDate]);\n            break;\n    }\n    if (formatValue) {\n        NAMED_FORMATS[localeId][format] = formatValue;\n    }\n    return formatValue;\n}\nfunction formatDateTime(str, opt_values) {\n    if (opt_values) {\n        str = str.replace(/\\{([^}]+)}/g, function (match, key) {\n            return (opt_values != null && key in opt_values) ? opt_values[key] : match;\n        });\n    }\n    return str;\n}\nfunction padNumber(num, digits, minusSign = '-', trim, negWrap) {\n    let neg = '';\n    if (num < 0 || (negWrap && num <= 0)) {\n        if (negWrap) {\n            num = -num + 1;\n        }\n        else {\n            num = -num;\n            neg = minusSign;\n        }\n    }\n    let strNum = String(num);\n    while (strNum.length < digits) {\n        strNum = '0' + strNum;\n    }\n    if (trim) {\n        strNum = strNum.slice(strNum.length - digits);\n    }\n    return neg + strNum;\n}\nfunction formatFractionalSeconds(milliseconds, digits) {\n    const strMs = padNumber(milliseconds, 3);\n    return strMs.substring(0, digits);\n}\n/**\n * Returns a date formatter that transforms a date into its locale digit representation\n */\nfunction dateGetter(name, size, offset = 0, trim = false, negWrap = false) {\n    return function (date, locale) {\n        let part = getDatePart(name, date);\n        if (offset > 0 || part > -offset) {\n            part += offset;\n        }\n        if (name === DateType.Hours) {\n            if (part === 0 && offset === -12) {\n                part = 12;\n            }\n        }\n        else if (name === DateType.FractionalSeconds) {\n            return formatFractionalSeconds(part, size);\n        }\n        const localeMinus = getLocaleNumberSymbol(locale, NumberSymbol.MinusSign);\n        return padNumber(part, size, localeMinus, trim, negWrap);\n    };\n}\nfunction getDatePart(part, date) {\n    switch (part) {\n        case DateType.FullYear:\n            return date.getFullYear();\n        case DateType.Month:\n            return date.getMonth();\n        case DateType.Date:\n            return date.getDate();\n        case DateType.Hours:\n            return date.getHours();\n        case DateType.Minutes:\n            return date.getMinutes();\n        case DateType.Seconds:\n            return date.getSeconds();\n        case DateType.FractionalSeconds:\n            return date.getMilliseconds();\n        case DateType.Day:\n            return date.getDay();\n        default:\n            throw new Error(`Unknown DateType value \"${part}\".`);\n    }\n}\n/**\n * Returns a date formatter that transforms a date into its locale string representation\n */\nfunction dateStrGetter(name, width, form = FormStyle.Format, extended = false) {\n    return function (date, locale) {\n        return getDateTranslation(date, locale, name, width, form, extended);\n    };\n}\n/**\n * Returns the locale translation of a date for a given form, type and width\n */\nfunction getDateTranslation(date, locale, name, width, form, extended) {\n    switch (name) {\n        case TranslationType.Months:\n            return getLocaleMonthNames(locale, form, width)[date.getMonth()];\n        case TranslationType.Days:\n            return getLocaleDayNames(locale, form, width)[date.getDay()];\n        case TranslationType.DayPeriods:\n            const currentHours = date.getHours();\n            const currentMinutes = date.getMinutes();\n            if (extended) {\n                const rules = getLocaleExtraDayPeriodRules(locale);\n                const dayPeriods = getLocaleExtraDayPeriods(locale, form, width);\n                const index = rules.findIndex(rule => {\n                    if (Array.isArray(rule)) {\n                        // morning, afternoon, evening, night\n                        const [from, to] = rule;\n                        const afterFrom = currentHours >= from.hours && currentMinutes >= from.minutes;\n                        const beforeTo = (currentHours < to.hours ||\n                            (currentHours === to.hours && currentMinutes < to.minutes));\n                        // We must account for normal rules that span a period during the day (e.g. 6am-9am)\n                        // where `from` is less (earlier) than `to`. But also rules that span midnight (e.g.\n                        // 10pm - 5am) where `from` is greater (later!) than `to`.\n                        //\n                        // In the first case the current time must be BOTH after `from` AND before `to`\n                        // (e.g. 8am is after 6am AND before 10am).\n                        //\n                        // In the second case the current time must be EITHER after `from` OR before `to`\n                        // (e.g. 4am is before 5am but not after 10pm; and 11pm is not before 5am but it is\n                        // after 10pm).\n                        if (from.hours < to.hours) {\n                            if (afterFrom && beforeTo) {\n                                return true;\n                            }\n                        }\n                        else if (afterFrom || beforeTo) {\n                            return true;\n                        }\n                    }\n                    else { // noon or midnight\n                        if (rule.hours === currentHours && rule.minutes === currentMinutes) {\n                            return true;\n                        }\n                    }\n                    return false;\n                });\n                if (index !== -1) {\n                    return dayPeriods[index];\n                }\n            }\n            // if no rules for the day periods, we use am/pm by default\n            return getLocaleDayPeriods(locale, form, width)[currentHours < 12 ? 0 : 1];\n        case TranslationType.Eras:\n            return getLocaleEraNames(locale, width)[date.getFullYear() <= 0 ? 0 : 1];\n        default:\n            // This default case is not needed by TypeScript compiler, as the switch is exhaustive.\n            // However Closure Compiler does not understand that and reports an error in typed mode.\n            // The `throw new Error` below works around the problem, and the unexpected: never variable\n            // makes sure tsc still checks this code is unreachable.\n            const unexpected = name;\n            throw new Error(`unexpected translation type ${unexpected}`);\n    }\n}\n/**\n * Returns a date formatter that transforms a date and an offset into a timezone with ISO8601 or\n * GMT format depending on the width (eg: short = +0430, short:GMT = GMT+4, long = GMT+04:30,\n * extended = +04:30)\n */\nfunction timeZoneGetter(width) {\n    return function (date, locale, offset) {\n        const zone = -1 * offset;\n        const minusSign = getLocaleNumberSymbol(locale, NumberSymbol.MinusSign);\n        const hours = zone > 0 ? Math.floor(zone / 60) : Math.ceil(zone / 60);\n        switch (width) {\n            case ZoneWidth.Short:\n                return ((zone >= 0) ? '+' : '') + padNumber(hours, 2, minusSign) +\n                    padNumber(Math.abs(zone % 60), 2, minusSign);\n            case ZoneWidth.ShortGMT:\n                return 'GMT' + ((zone >= 0) ? '+' : '') + padNumber(hours, 1, minusSign);\n            case ZoneWidth.Long:\n                return 'GMT' + ((zone >= 0) ? '+' : '') + padNumber(hours, 2, minusSign) + ':' +\n                    padNumber(Math.abs(zone % 60), 2, minusSign);\n            case ZoneWidth.Extended:\n                if (offset === 0) {\n                    return 'Z';\n                }\n                else {\n                    return ((zone >= 0) ? '+' : '') + padNumber(hours, 2, minusSign) + ':' +\n                        padNumber(Math.abs(zone % 60), 2, minusSign);\n                }\n            default:\n                throw new Error(`Unknown zone width \"${width}\"`);\n        }\n    };\n}\nconst JANUARY = 0;\nconst THURSDAY = 4;\nfunction getFirstThursdayOfYear(year) {\n    const firstDayOfYear = createDate(year, JANUARY, 1).getDay();\n    return createDate(year, 0, 1 + ((firstDayOfYear <= THURSDAY) ? THURSDAY : THURSDAY + 7) - firstDayOfYear);\n}\nfunction getThursdayThisWeek(datetime) {\n    return createDate(datetime.getFullYear(), datetime.getMonth(), datetime.getDate() + (THURSDAY - datetime.getDay()));\n}\nfunction weekGetter(size, monthBased = false) {\n    return function (date, locale) {\n        let result;\n        if (monthBased) {\n            const nbDaysBefore1stDayOfMonth = new Date(date.getFullYear(), date.getMonth(), 1).getDay() - 1;\n            const today = date.getDate();\n            result = 1 + Math.floor((today + nbDaysBefore1stDayOfMonth) / 7);\n        }\n        else {\n            const thisThurs = getThursdayThisWeek(date);\n            // Some days of a year are part of next year according to ISO 8601.\n            // Compute the firstThurs from the year of this week's Thursday\n            const firstThurs = getFirstThursdayOfYear(thisThurs.getFullYear());\n            const diff = thisThurs.getTime() - firstThurs.getTime();\n            result = 1 + Math.round(diff / 6.048e8); // 6.048e8 ms per week\n        }\n        return padNumber(result, size, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign));\n    };\n}\n/**\n * Returns a date formatter that provides the week-numbering year for the input date.\n */\nfunction weekNumberingYearGetter(size, trim = false) {\n    return function (date, locale) {\n        const thisThurs = getThursdayThisWeek(date);\n        const weekNumberingYear = thisThurs.getFullYear();\n        return padNumber(weekNumberingYear, size, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign), trim);\n    };\n}\nconst DATE_FORMATS = {};\n// Based on CLDR formats:\n// See complete list: http://www.unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table\n// See also explanations: http://cldr.unicode.org/translation/date-time\n// TODO(ocombe): support all missing cldr formats: U, Q, D, F, e, j, J, C, A, v, V, X, x\nfunction getDateFormatter(format) {\n    if (DATE_FORMATS[format]) {\n        return DATE_FORMATS[format];\n    }\n    let formatter;\n    switch (format) {\n        // Era name (AD/BC)\n        case 'G':\n        case 'GG':\n        case 'GGG':\n            formatter = dateStrGetter(TranslationType.Eras, TranslationWidth.Abbreviated);\n            break;\n        case 'GGGG':\n            formatter = dateStrGetter(TranslationType.Eras, TranslationWidth.Wide);\n            break;\n        case 'GGGGG':\n            formatter = dateStrGetter(TranslationType.Eras, TranslationWidth.Narrow);\n            break;\n        // 1 digit representation of the year, e.g. (AD 1 => 1, AD 199 => 199)\n        case 'y':\n            formatter = dateGetter(DateType.FullYear, 1, 0, false, true);\n            break;\n        // 2 digit representation of the year, padded (00-99). (e.g. AD 2001 => 01, AD 2010 => 10)\n        case 'yy':\n            formatter = dateGetter(DateType.FullYear, 2, 0, true, true);\n            break;\n        // 3 digit representation of the year, padded (000-999). (e.g. AD 2001 => 01, AD 2010 => 10)\n        case 'yyy':\n            formatter = dateGetter(DateType.FullYear, 3, 0, false, true);\n            break;\n        // 4 digit representation of the year (e.g. AD 1 => 0001, AD 2010 => 2010)\n        case 'yyyy':\n            formatter = dateGetter(DateType.FullYear, 4, 0, false, true);\n            break;\n        // 1 digit representation of the week-numbering year, e.g. (AD 1 => 1, AD 199 => 199)\n        case 'Y':\n            formatter = weekNumberingYearGetter(1);\n            break;\n        // 2 digit representation of the week-numbering year, padded (00-99). (e.g. AD 2001 => 01, AD\n        // 2010 => 10)\n        case 'YY':\n            formatter = weekNumberingYearGetter(2, true);\n            break;\n        // 3 digit representation of the week-numbering year, padded (000-999). (e.g. AD 1 => 001, AD\n        // 2010 => 2010)\n        case 'YYY':\n            formatter = weekNumberingYearGetter(3);\n            break;\n        // 4 digit representation of the week-numbering year (e.g. AD 1 => 0001, AD 2010 => 2010)\n        case 'YYYY':\n            formatter = weekNumberingYearGetter(4);\n            break;\n        // Month of the year (1-12), numeric\n        case 'M':\n        case 'L':\n            formatter = dateGetter(DateType.Month, 1, 1);\n            break;\n        case 'MM':\n        case 'LL':\n            formatter = dateGetter(DateType.Month, 2, 1);\n            break;\n        // Month of the year (January, ...), string, format\n        case 'MMM':\n            formatter = dateStrGetter(TranslationType.Months, TranslationWidth.Abbreviated);\n            break;\n        case 'MMMM':\n            formatter = dateStrGetter(TranslationType.Months, TranslationWidth.Wide);\n            break;\n        case 'MMMMM':\n            formatter = dateStrGetter(TranslationType.Months, TranslationWidth.Narrow);\n            break;\n        // Month of the year (January, ...), string, standalone\n        case 'LLL':\n            formatter =\n                dateStrGetter(TranslationType.Months, TranslationWidth.Abbreviated, FormStyle.Standalone);\n            break;\n        case 'LLLL':\n            formatter =\n                dateStrGetter(TranslationType.Months, TranslationWidth.Wide, FormStyle.Standalone);\n            break;\n        case 'LLLLL':\n            formatter =\n                dateStrGetter(TranslationType.Months, TranslationWidth.Narrow, FormStyle.Standalone);\n            break;\n        // Week of the year (1, ... 52)\n        case 'w':\n            formatter = weekGetter(1);\n            break;\n        case 'ww':\n            formatter = weekGetter(2);\n            break;\n        // Week of the month (1, ...)\n        case 'W':\n            formatter = weekGetter(1, true);\n            break;\n        // Day of the month (1-31)\n        case 'd':\n            formatter = dateGetter(DateType.Date, 1);\n            break;\n        case 'dd':\n            formatter = dateGetter(DateType.Date, 2);\n            break;\n        // Day of the Week StandAlone (1, 1, Mon, Monday, M, Mo)\n        case 'c':\n        case 'cc':\n            formatter = dateGetter(DateType.Day, 1);\n            break;\n        case 'ccc':\n            formatter =\n                dateStrGetter(TranslationType.Days, TranslationWidth.Abbreviated, FormStyle.Standalone);\n            break;\n        case 'cccc':\n            formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Wide, FormStyle.Standalone);\n            break;\n        case 'ccccc':\n            formatter =\n                dateStrGetter(TranslationType.Days, TranslationWidth.Narrow, FormStyle.Standalone);\n            break;\n        case 'cccccc':\n            formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Short, FormStyle.Standalone);\n            break;\n        // Day of the Week\n        case 'E':\n        case 'EE':\n        case 'EEE':\n            formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Abbreviated);\n            break;\n        case 'EEEE':\n            formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Wide);\n            break;\n        case 'EEEEE':\n            formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Narrow);\n            break;\n        case 'EEEEEE':\n            formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Short);\n            break;\n        // Generic period of the day (am-pm)\n        case 'a':\n        case 'aa':\n        case 'aaa':\n            formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Abbreviated);\n            break;\n        case 'aaaa':\n            formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Wide);\n            break;\n        case 'aaaaa':\n            formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Narrow);\n            break;\n        // Extended period of the day (midnight, at night, ...), standalone\n        case 'b':\n        case 'bb':\n        case 'bbb':\n            formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Abbreviated, FormStyle.Standalone, true);\n            break;\n        case 'bbbb':\n            formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Wide, FormStyle.Standalone, true);\n            break;\n        case 'bbbbb':\n            formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Narrow, FormStyle.Standalone, true);\n            break;\n        // Extended period of the day (midnight, night, ...), standalone\n        case 'B':\n        case 'BB':\n        case 'BBB':\n            formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Abbreviated, FormStyle.Format, true);\n            break;\n        case 'BBBB':\n            formatter =\n                dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Wide, FormStyle.Format, true);\n            break;\n        case 'BBBBB':\n            formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Narrow, FormStyle.Format, true);\n            break;\n        // Hour in AM/PM, (1-12)\n        case 'h':\n            formatter = dateGetter(DateType.Hours, 1, -12);\n            break;\n        case 'hh':\n            formatter = dateGetter(DateType.Hours, 2, -12);\n            break;\n        // Hour of the day (0-23)\n        case 'H':\n            formatter = dateGetter(DateType.Hours, 1);\n            break;\n        // Hour in day, padded (00-23)\n        case 'HH':\n            formatter = dateGetter(DateType.Hours, 2);\n            break;\n        // Minute of the hour (0-59)\n        case 'm':\n            formatter = dateGetter(DateType.Minutes, 1);\n            break;\n        case 'mm':\n            formatter = dateGetter(DateType.Minutes, 2);\n            break;\n        // Second of the minute (0-59)\n        case 's':\n            formatter = dateGetter(DateType.Seconds, 1);\n            break;\n        case 'ss':\n            formatter = dateGetter(DateType.Seconds, 2);\n            break;\n        // Fractional second\n        case 'S':\n            formatter = dateGetter(DateType.FractionalSeconds, 1);\n            break;\n        case 'SS':\n            formatter = dateGetter(DateType.FractionalSeconds, 2);\n            break;\n        case 'SSS':\n            formatter = dateGetter(DateType.FractionalSeconds, 3);\n            break;\n        // Timezone ISO8601 short format (-0430)\n        case 'Z':\n        case 'ZZ':\n        case 'ZZZ':\n            formatter = timeZoneGetter(ZoneWidth.Short);\n            break;\n        // Timezone ISO8601 extended format (-04:30)\n        case 'ZZZZZ':\n            formatter = timeZoneGetter(ZoneWidth.Extended);\n            break;\n        // Timezone GMT short format (GMT+4)\n        case 'O':\n        case 'OO':\n        case 'OOO':\n        // Should be location, but fallback to format O instead because we don't have the data yet\n        case 'z':\n        case 'zz':\n        case 'zzz':\n            formatter = timeZoneGetter(ZoneWidth.ShortGMT);\n            break;\n        // Timezone GMT long format (GMT+0430)\n        case 'OOOO':\n        case 'ZZZZ':\n        // Should be location, but fallback to format O instead because we don't have the data yet\n        case 'zzzz':\n            formatter = timeZoneGetter(ZoneWidth.Long);\n            break;\n        default:\n            return null;\n    }\n    DATE_FORMATS[format] = formatter;\n    return formatter;\n}\nfunction timezoneToOffset(timezone, fallback) {\n    // Support: IE 11 only, Edge 13-15+\n    // IE/Edge do not \"understand\" colon (`:`) in timezone\n    timezone = timezone.replace(/:/g, '');\n    const requestedTimezoneOffset = Date.parse('Jan 01, 1970 00:00:00 ' + timezone) / 60000;\n    return isNaN(requestedTimezoneOffset) ? fallback : requestedTimezoneOffset;\n}\nfunction addDateMinutes(date, minutes) {\n    date = new Date(date.getTime());\n    date.setMinutes(date.getMinutes() + minutes);\n    return date;\n}\nfunction convertTimezoneToLocal(date, timezone, reverse) {\n    const reverseValue = reverse ? -1 : 1;\n    const dateTimezoneOffset = date.getTimezoneOffset();\n    const timezoneOffset = timezoneToOffset(timezone, dateTimezoneOffset);\n    return addDateMinutes(date, reverseValue * (timezoneOffset - dateTimezoneOffset));\n}\n/**\n * Converts a value to date.\n *\n * Supported input formats:\n * - `Date`\n * - number: timestamp\n * - string: numeric (e.g. \"1234\"), ISO and date strings in a format supported by\n *   [Date.parse()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/parse).\n *   Note: ISO strings without time return a date without timeoffset.\n *\n * Throws if unable to convert to a date.\n */\nfunction toDate(value) {\n    if (isDate(value)) {\n        return value;\n    }\n    if (typeof value === 'number' && !isNaN(value)) {\n        return new Date(value);\n    }\n    if (typeof value === 'string') {\n        value = value.trim();\n        if (/^(\\d{4}(-\\d{1,2}(-\\d{1,2})?)?)$/.test(value)) {\n            /* For ISO Strings without time the day, month and year must be extracted from the ISO String\n            before Date creation to avoid time offset and errors in the new Date.\n            If we only replace '-' with ',' in the ISO String (\"2015,01,01\"), and try to create a new\n            date, some browsers (e.g. IE 9) will throw an invalid Date error.\n            If we leave the '-' (\"2015-01-01\") and try to create a new Date(\"2015-01-01\") the timeoffset\n            is applied.\n            Note: ISO months are 0 for January, 1 for February, ... */\n            const [y, m = 1, d = 1] = value.split('-').map((val) => +val);\n            return createDate(y, m - 1, d);\n        }\n        const parsedNb = parseFloat(value);\n        // any string that only contains numbers, like \"1234\" but not like \"1234hello\"\n        if (!isNaN(value - parsedNb)) {\n            return new Date(parsedNb);\n        }\n        let match;\n        if (match = value.match(ISO8601_DATE_REGEX)) {\n            return isoStringToDate(match);\n        }\n    }\n    const date = new Date(value);\n    if (!isDate(date)) {\n        throw new Error(`Unable to convert \"${value}\" into a date`);\n    }\n    return date;\n}\n/**\n * Converts a date in ISO8601 to a Date.\n * Used instead of `Date.parse` because of browser discrepancies.\n */\nfunction isoStringToDate(match) {\n    const date = new Date(0);\n    let tzHour = 0;\n    let tzMin = 0;\n    // match[8] means that the string contains \"Z\" (UTC) or a timezone like \"+01:00\" or \"+0100\"\n    const dateSetter = match[8] ? date.setUTCFullYear : date.setFullYear;\n    const timeSetter = match[8] ? date.setUTCHours : date.setHours;\n    // if there is a timezone defined like \"+01:00\" or \"+0100\"\n    if (match[9]) {\n        tzHour = Number(match[9] + match[10]);\n        tzMin = Number(match[9] + match[11]);\n    }\n    dateSetter.call(date, Number(match[1]), Number(match[2]) - 1, Number(match[3]));\n    const h = Number(match[4] || 0) - tzHour;\n    const m = Number(match[5] || 0) - tzMin;\n    const s = Number(match[6] || 0);\n    // The ECMAScript specification (https://www.ecma-international.org/ecma-262/5.1/#sec-15.9.1.11)\n    // defines that `DateTime` milliseconds should always be rounded down, so that `999.9ms`\n    // becomes `999ms`.\n    const ms = Math.floor(parseFloat('0.' + (match[7] || 0)) * 1000);\n    timeSetter.call(date, h, m, s, ms);\n    return date;\n}\nfunction isDate(value) {\n    return value instanceof Date && !isNaN(value.valueOf());\n}\n\nconst NUMBER_FORMAT_REGEXP = /^(\\d+)?\\.((\\d+)(-(\\d+))?)?$/;\nconst MAX_DIGITS = 22;\nconst DECIMAL_SEP = '.';\nconst ZERO_CHAR = '0';\nconst PATTERN_SEP = ';';\nconst GROUP_SEP = ',';\nconst DIGIT_CHAR = '#';\nconst CURRENCY_CHAR = '¤';\nconst PERCENT_CHAR = '%';\n/**\n * Transforms a number to a locale string based on a style and a format.\n */\nfunction formatNumberToLocaleString(value, pattern, locale, groupSymbol, decimalSymbol, digitsInfo, isPercent = false) {\n    let formattedText = '';\n    let isZero = false;\n    if (!isFinite(value)) {\n        formattedText = getLocaleNumberSymbol(locale, NumberSymbol.Infinity);\n    }\n    else {\n        let parsedNumber = parseNumber(value);\n        if (isPercent) {\n            parsedNumber = toPercent(parsedNumber);\n        }\n        let minInt = pattern.minInt;\n        let minFraction = pattern.minFrac;\n        let maxFraction = pattern.maxFrac;\n        if (digitsInfo) {\n            const parts = digitsInfo.match(NUMBER_FORMAT_REGEXP);\n            if (parts === null) {\n                throw new Error(`${digitsInfo} is not a valid digit info`);\n            }\n            const minIntPart = parts[1];\n            const minFractionPart = parts[3];\n            const maxFractionPart = parts[5];\n            if (minIntPart != null) {\n                minInt = parseIntAutoRadix(minIntPart);\n            }\n            if (minFractionPart != null) {\n                minFraction = parseIntAutoRadix(minFractionPart);\n            }\n            if (maxFractionPart != null) {\n                maxFraction = parseIntAutoRadix(maxFractionPart);\n            }\n            else if (minFractionPart != null && minFraction > maxFraction) {\n                maxFraction = minFraction;\n            }\n        }\n        roundNumber(parsedNumber, minFraction, maxFraction);\n        let digits = parsedNumber.digits;\n        let integerLen = parsedNumber.integerLen;\n        const exponent = parsedNumber.exponent;\n        let decimals = [];\n        isZero = digits.every(d => !d);\n        // pad zeros for small numbers\n        for (; integerLen < minInt; integerLen++) {\n            digits.unshift(0);\n        }\n        // pad zeros for small numbers\n        for (; integerLen < 0; integerLen++) {\n            digits.unshift(0);\n        }\n        // extract decimals digits\n        if (integerLen > 0) {\n            decimals = digits.splice(integerLen, digits.length);\n        }\n        else {\n            decimals = digits;\n            digits = [0];\n        }\n        // format the integer digits with grouping separators\n        const groups = [];\n        if (digits.length >= pattern.lgSize) {\n            groups.unshift(digits.splice(-pattern.lgSize, digits.length).join(''));\n        }\n        while (digits.length > pattern.gSize) {\n            groups.unshift(digits.splice(-pattern.gSize, digits.length).join(''));\n        }\n        if (digits.length) {\n            groups.unshift(digits.join(''));\n        }\n        formattedText = groups.join(getLocaleNumberSymbol(locale, groupSymbol));\n        // append the decimal digits\n        if (decimals.length) {\n            formattedText += getLocaleNumberSymbol(locale, decimalSymbol) + decimals.join('');\n        }\n        if (exponent) {\n            formattedText += getLocaleNumberSymbol(locale, NumberSymbol.Exponential) + '+' + exponent;\n        }\n    }\n    if (value < 0 && !isZero) {\n        formattedText = pattern.negPre + formattedText + pattern.negSuf;\n    }\n    else {\n        formattedText = pattern.posPre + formattedText + pattern.posSuf;\n    }\n    return formattedText;\n}\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a number as currency using locale rules.\n *\n * @param value The number to format.\n * @param locale A locale code for the locale format rules to use.\n * @param currency A string containing the currency symbol or its name,\n * such as \"$\" or \"Canadian Dollar\". Used in output string, but does not affect the operation\n * of the function.\n * @param currencyCode The [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217)\n * currency code, such as `USD` for the US dollar and `EUR` for the euro.\n * Used to determine the number of digits in the decimal part.\n * @param digitsInfo Decimal representation options, specified by a string in the following format:\n * `{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}`. See `DecimalPipe` for more details.\n *\n * @returns The formatted currency value.\n *\n * @see `formatNumber()`\n * @see `DecimalPipe`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction formatCurrency(value, locale, currency, currencyCode, digitsInfo) {\n    const format = getLocaleNumberFormat(locale, NumberFormatStyle.Currency);\n    const pattern = parseNumberFormat(format, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign));\n    pattern.minFrac = getNumberOfCurrencyDigits(currencyCode);\n    pattern.maxFrac = pattern.minFrac;\n    const res = formatNumberToLocaleString(value, pattern, locale, NumberSymbol.CurrencyGroup, NumberSymbol.CurrencyDecimal, digitsInfo);\n    return res\n        .replace(CURRENCY_CHAR, currency)\n        // if we have 2 time the currency character, the second one is ignored\n        .replace(CURRENCY_CHAR, '')\n        // If there is a spacing between currency character and the value and\n        // the currency character is suppressed by passing an empty string, the\n        // spacing character would remain as part of the string. Then we\n        // should remove it.\n        .trim();\n}\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a number as a percentage according to locale rules.\n *\n * @param value The number to format.\n * @param locale A locale code for the locale format rules to use.\n * @param digitsInfo Decimal representation options, specified by a string in the following format:\n * `{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}`. See `DecimalPipe` for more details.\n *\n * @returns The formatted percentage value.\n *\n * @see `formatNumber()`\n * @see `DecimalPipe`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n * @publicApi\n *\n */\nfunction formatPercent(value, locale, digitsInfo) {\n    const format = getLocaleNumberFormat(locale, NumberFormatStyle.Percent);\n    const pattern = parseNumberFormat(format, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign));\n    const res = formatNumberToLocaleString(value, pattern, locale, NumberSymbol.Group, NumberSymbol.Decimal, digitsInfo, true);\n    return res.replace(new RegExp(PERCENT_CHAR, 'g'), getLocaleNumberSymbol(locale, NumberSymbol.PercentSign));\n}\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a number as text, with group sizing, separator, and other\n * parameters based on the locale.\n *\n * @param value The number to format.\n * @param locale A locale code for the locale format rules to use.\n * @param digitsInfo Decimal representation options, specified by a string in the following format:\n * `{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}`. See `DecimalPipe` for more details.\n *\n * @returns The formatted text string.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n *\n * @publicApi\n */\nfunction formatNumber(value, locale, digitsInfo) {\n    const format = getLocaleNumberFormat(locale, NumberFormatStyle.Decimal);\n    const pattern = parseNumberFormat(format, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign));\n    return formatNumberToLocaleString(value, pattern, locale, NumberSymbol.Group, NumberSymbol.Decimal, digitsInfo);\n}\nfunction parseNumberFormat(format, minusSign = '-') {\n    const p = {\n        minInt: 1,\n        minFrac: 0,\n        maxFrac: 0,\n        posPre: '',\n        posSuf: '',\n        negPre: '',\n        negSuf: '',\n        gSize: 0,\n        lgSize: 0\n    };\n    const patternParts = format.split(PATTERN_SEP);\n    const positive = patternParts[0];\n    const negative = patternParts[1];\n    const positiveParts = positive.indexOf(DECIMAL_SEP) !== -1 ?\n        positive.split(DECIMAL_SEP) :\n        [\n            positive.substring(0, positive.lastIndexOf(ZERO_CHAR) + 1),\n            positive.substring(positive.lastIndexOf(ZERO_CHAR) + 1)\n        ], integer = positiveParts[0], fraction = positiveParts[1] || '';\n    p.posPre = integer.substring(0, integer.indexOf(DIGIT_CHAR));\n    for (let i = 0; i < fraction.length; i++) {\n        const ch = fraction.charAt(i);\n        if (ch === ZERO_CHAR) {\n            p.minFrac = p.maxFrac = i + 1;\n        }\n        else if (ch === DIGIT_CHAR) {\n            p.maxFrac = i + 1;\n        }\n        else {\n            p.posSuf += ch;\n        }\n    }\n    const groups = integer.split(GROUP_SEP);\n    p.gSize = groups[1] ? groups[1].length : 0;\n    p.lgSize = (groups[2] || groups[1]) ? (groups[2] || groups[1]).length : 0;\n    if (negative) {\n        const trunkLen = positive.length - p.posPre.length - p.posSuf.length, pos = negative.indexOf(DIGIT_CHAR);\n        p.negPre = negative.substring(0, pos).replace(/'/g, '');\n        p.negSuf = negative.slice(pos + trunkLen).replace(/'/g, '');\n    }\n    else {\n        p.negPre = minusSign + p.posPre;\n        p.negSuf = p.posSuf;\n    }\n    return p;\n}\n// Transforms a parsed number into a percentage by multiplying it by 100\nfunction toPercent(parsedNumber) {\n    // if the number is 0, don't do anything\n    if (parsedNumber.digits[0] === 0) {\n        return parsedNumber;\n    }\n    // Getting the current number of decimals\n    const fractionLen = parsedNumber.digits.length - parsedNumber.integerLen;\n    if (parsedNumber.exponent) {\n        parsedNumber.exponent += 2;\n    }\n    else {\n        if (fractionLen === 0) {\n            parsedNumber.digits.push(0, 0);\n        }\n        else if (fractionLen === 1) {\n            parsedNumber.digits.push(0);\n        }\n        parsedNumber.integerLen += 2;\n    }\n    return parsedNumber;\n}\n/**\n * Parses a number.\n * Significant bits of this parse algorithm came from https://github.com/MikeMcl/big.js/\n */\nfunction parseNumber(num) {\n    let numStr = Math.abs(num) + '';\n    let exponent = 0, digits, integerLen;\n    let i, j, zeros;\n    // Decimal point?\n    if ((integerLen = numStr.indexOf(DECIMAL_SEP)) > -1) {\n        numStr = numStr.replace(DECIMAL_SEP, '');\n    }\n    // Exponential form?\n    if ((i = numStr.search(/e/i)) > 0) {\n        // Work out the exponent.\n        if (integerLen < 0)\n            integerLen = i;\n        integerLen += +numStr.slice(i + 1);\n        numStr = numStr.substring(0, i);\n    }\n    else if (integerLen < 0) {\n        // There was no decimal point or exponent so it is an integer.\n        integerLen = numStr.length;\n    }\n    // Count the number of leading zeros.\n    for (i = 0; numStr.charAt(i) === ZERO_CHAR; i++) { /* empty */\n    }\n    if (i === (zeros = numStr.length)) {\n        // The digits are all zero.\n        digits = [0];\n        integerLen = 1;\n    }\n    else {\n        // Count the number of trailing zeros\n        zeros--;\n        while (numStr.charAt(zeros) === ZERO_CHAR)\n            zeros--;\n        // Trailing zeros are insignificant so ignore them\n        integerLen -= i;\n        digits = [];\n        // Convert string to array of digits without leading/trailing zeros.\n        for (j = 0; i <= zeros; i++, j++) {\n            digits[j] = Number(numStr.charAt(i));\n        }\n    }\n    // If the number overflows the maximum allowed digits then use an exponent.\n    if (integerLen > MAX_DIGITS) {\n        digits = digits.splice(0, MAX_DIGITS - 1);\n        exponent = integerLen - 1;\n        integerLen = 1;\n    }\n    return { digits, exponent, integerLen };\n}\n/**\n * Round the parsed number to the specified number of decimal places\n * This function changes the parsedNumber in-place\n */\nfunction roundNumber(parsedNumber, minFrac, maxFrac) {\n    if (minFrac > maxFrac) {\n        throw new Error(`The minimum number of digits after fraction (${minFrac}) is higher than the maximum (${maxFrac}).`);\n    }\n    let digits = parsedNumber.digits;\n    let fractionLen = digits.length - parsedNumber.integerLen;\n    const fractionSize = Math.min(Math.max(minFrac, fractionLen), maxFrac);\n    // The index of the digit to where rounding is to occur\n    let roundAt = fractionSize + parsedNumber.integerLen;\n    let digit = digits[roundAt];\n    if (roundAt > 0) {\n        // Drop fractional digits beyond `roundAt`\n        digits.splice(Math.max(parsedNumber.integerLen, roundAt));\n        // Set non-fractional digits beyond `roundAt` to 0\n        for (let j = roundAt; j < digits.length; j++) {\n            digits[j] = 0;\n        }\n    }\n    else {\n        // We rounded to zero so reset the parsedNumber\n        fractionLen = Math.max(0, fractionLen);\n        parsedNumber.integerLen = 1;\n        digits.length = Math.max(1, roundAt = fractionSize + 1);\n        digits[0] = 0;\n        for (let i = 1; i < roundAt; i++)\n            digits[i] = 0;\n    }\n    if (digit >= 5) {\n        if (roundAt - 1 < 0) {\n            for (let k = 0; k > roundAt; k--) {\n                digits.unshift(0);\n                parsedNumber.integerLen++;\n            }\n            digits.unshift(1);\n            parsedNumber.integerLen++;\n        }\n        else {\n            digits[roundAt - 1]++;\n        }\n    }\n    // Pad out with zeros to get the required fraction length\n    for (; fractionLen < Math.max(0, fractionSize); fractionLen++)\n        digits.push(0);\n    let dropTrailingZeros = fractionSize !== 0;\n    // Minimal length = nb of decimals required + current nb of integers\n    // Any number besides that is optional and can be removed if it's a trailing 0\n    const minLen = minFrac + parsedNumber.integerLen;\n    // Do any carrying, e.g. a digit was rounded up to 10\n    const carry = digits.reduceRight(function (carry, d, i, digits) {\n        d = d + carry;\n        digits[i] = d < 10 ? d : d - 10; // d % 10\n        if (dropTrailingZeros) {\n            // Do not keep meaningless fractional trailing zeros (e.g. 15.52000 --> 15.52)\n            if (digits[i] === 0 && i >= minLen) {\n                digits.pop();\n            }\n            else {\n                dropTrailingZeros = false;\n            }\n        }\n        return d >= 10 ? 1 : 0; // Math.floor(d / 10);\n    }, 0);\n    if (carry) {\n        digits.unshift(carry);\n        parsedNumber.integerLen++;\n    }\n}\nfunction parseIntAutoRadix(text) {\n    const result = parseInt(text);\n    if (isNaN(result)) {\n        throw new Error('Invalid integer literal when parsing ' + text);\n    }\n    return result;\n}\n\n/**\n * @publicApi\n */\nclass NgLocalization {\n}\nNgLocalization.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgLocalization, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nNgLocalization.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgLocalization, providedIn: 'root', useFactory: (locale) => new NgLocaleLocalization(locale), deps: [{ token: LOCALE_ID }] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgLocalization, decorators: [{\n            type: Injectable,\n            args: [{\n                    providedIn: 'root',\n                    useFactory: (locale) => new NgLocaleLocalization(locale),\n                    deps: [LOCALE_ID],\n                }]\n        }] });\n/**\n * Returns the plural category for a given value.\n * - \"=value\" when the case exists,\n * - the plural category otherwise\n */\nfunction getPluralCategory(value, cases, ngLocalization, locale) {\n    let key = `=${value}`;\n    if (cases.indexOf(key) > -1) {\n        return key;\n    }\n    key = ngLocalization.getPluralCategory(value, locale);\n    if (cases.indexOf(key) > -1) {\n        return key;\n    }\n    if (cases.indexOf('other') > -1) {\n        return 'other';\n    }\n    throw new Error(`No plural message found for value \"${value}\"`);\n}\n/**\n * Returns the plural case based on the locale\n *\n * @publicApi\n */\nclass NgLocaleLocalization extends NgLocalization {\n    constructor(locale) {\n        super();\n        this.locale = locale;\n    }\n    getPluralCategory(value, locale) {\n        const plural = getLocalePluralCase(locale || this.locale)(value);\n        switch (plural) {\n            case Plural.Zero:\n                return 'zero';\n            case Plural.One:\n                return 'one';\n            case Plural.Two:\n                return 'two';\n            case Plural.Few:\n                return 'few';\n            case Plural.Many:\n                return 'many';\n            default:\n                return 'other';\n        }\n    }\n}\nNgLocaleLocalization.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgLocaleLocalization, deps: [{ token: LOCALE_ID }], target: i0.ɵɵFactoryTarget.Injectable });\nNgLocaleLocalization.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgLocaleLocalization });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgLocaleLocalization, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [LOCALE_ID]\n                }] }]; } });\n\n/**\n * Register global data to be used internally by Angular. See the\n * [\"I18n guide\"](guide/i18n-common-format-data-locale) to know how to import additional locale\n * data.\n *\n * The signature registerLocaleData(data: any, extraData?: any) is deprecated since v5.1\n *\n * @publicApi\n */\nfunction registerLocaleData(data, localeId, extraData) {\n    return ɵregisterLocaleData(data, localeId, extraData);\n}\n\nfunction parseCookieValue(cookieStr, name) {\n    name = encodeURIComponent(name);\n    for (const cookie of cookieStr.split(';')) {\n        const eqIndex = cookie.indexOf('=');\n        const [cookieName, cookieValue] = eqIndex == -1 ? [cookie, ''] : [cookie.slice(0, eqIndex), cookie.slice(eqIndex + 1)];\n        if (cookieName.trim() === name) {\n            return decodeURIComponent(cookieValue);\n        }\n    }\n    return null;\n}\n\nconst WS_REGEXP = /\\s+/;\nconst EMPTY_ARRAY = [];\n/**\n * @ngModule CommonModule\n *\n * @usageNotes\n * ```\n *     <some-element [ngClass]=\"'first second'\">...</some-element>\n *\n *     <some-element [ngClass]=\"['first', 'second']\">...</some-element>\n *\n *     <some-element [ngClass]=\"{'first': true, 'second': true, 'third': false}\">...</some-element>\n *\n *     <some-element [ngClass]=\"stringExp|arrayExp|objExp\">...</some-element>\n *\n *     <some-element [ngClass]=\"{'class1 class2 class3' : true}\">...</some-element>\n * ```\n *\n * @description\n *\n * Adds and removes CSS classes on an HTML element.\n *\n * The CSS classes are updated as follows, depending on the type of the expression evaluation:\n * - `string` - the CSS classes listed in the string (space delimited) are added,\n * - `Array` - the CSS classes declared as Array elements are added,\n * - `Object` - keys are CSS classes that get added when the expression given in the value\n *              evaluates to a truthy value, otherwise they are removed.\n *\n * @publicApi\n */\nclass NgClass {\n    constructor(\n    // leaving references to differs in place since flex layout is extending NgClass...\n    _iterableDiffers, _keyValueDiffers, _ngEl, _renderer) {\n        this._iterableDiffers = _iterableDiffers;\n        this._keyValueDiffers = _keyValueDiffers;\n        this._ngEl = _ngEl;\n        this._renderer = _renderer;\n        this.initialClasses = EMPTY_ARRAY;\n        this.stateMap = new Map();\n    }\n    set klass(value) {\n        this.initialClasses = value != null ? value.trim().split(WS_REGEXP) : EMPTY_ARRAY;\n    }\n    set ngClass(value) {\n        this.rawClass = typeof value === 'string' ? value.trim().split(WS_REGEXP) : value;\n    }\n    /*\n    The NgClass directive uses the custom change detection algorithm for its inputs. The custom\n    algorithm is necessary since inputs are represented as complex object or arrays that need to be\n    deeply-compared.\n  \n    This algorithm is perf-sensitive since NgClass is used very frequently and its poor performance\n    might negatively impact runtime performance of the entire change detection cycle. The design of\n    this algorithm is making sure that:\n    - there is no unnecessary DOM manipulation (CSS classes are added / removed from the DOM only when\n    needed), even if references to bound objects change;\n    - there is no memory allocation if nothing changes (even relatively modest memory allocation\n    during the change detection cycle can result in GC pauses for some of the CD cycles).\n  \n    The algorithm works by iterating over the set of bound classes, staring with [class] binding and\n    then going over [ngClass] binding. For each CSS class name:\n    - check if it was seen before (this information is tracked in the state map) and if its value\n    changed;\n    - mark it as \"touched\" - names that are not marked are not present in the latest set of binding\n    and we can remove such class name from the internal data structures;\n  \n    After iteration over all the CSS class names we've got data structure with all the information\n    necessary to synchronize changes to the DOM - it is enough to iterate over the state map, flush\n    changes to the DOM and reset internal data structures so those are ready for the next change\n    detection cycle.\n     */\n    ngDoCheck() {\n        // classes from the [class] binding\n        for (const klass of this.initialClasses) {\n            this._updateState(klass, true);\n        }\n        // classes from the [ngClass] binding\n        const rawClass = this.rawClass;\n        if (Array.isArray(rawClass) || rawClass instanceof Set) {\n            for (const klass of rawClass) {\n                this._updateState(klass, true);\n            }\n        }\n        else if (rawClass != null) {\n            for (const klass of Object.keys(rawClass)) {\n                this._updateState(klass, Boolean(rawClass[klass]));\n            }\n        }\n        this._applyStateDiff();\n    }\n    _updateState(klass, nextEnabled) {\n        const state = this.stateMap.get(klass);\n        if (state !== undefined) {\n            if (state.enabled !== nextEnabled) {\n                state.changed = true;\n                state.enabled = nextEnabled;\n            }\n            state.touched = true;\n        }\n        else {\n            this.stateMap.set(klass, { enabled: nextEnabled, changed: true, touched: true });\n        }\n    }\n    _applyStateDiff() {\n        for (const stateEntry of this.stateMap) {\n            const klass = stateEntry[0];\n            const state = stateEntry[1];\n            if (state.changed) {\n                this._toggleClass(klass, state.enabled);\n                state.changed = false;\n            }\n            else if (!state.touched) {\n                // A class that was previously active got removed from the new collection of classes -\n                // remove from the DOM as well.\n                if (state.enabled) {\n                    this._toggleClass(klass, false);\n                }\n                this.stateMap.delete(klass);\n            }\n            state.touched = false;\n        }\n    }\n    _toggleClass(klass, enabled) {\n        if (ngDevMode) {\n            if (typeof klass !== 'string') {\n                throw new Error(`NgClass can only toggle CSS classes expressed as strings, got ${ɵstringify(klass)}`);\n            }\n        }\n        klass = klass.trim();\n        if (klass.length > 0) {\n            klass.split(WS_REGEXP).forEach(klass => {\n                if (enabled) {\n                    this._renderer.addClass(this._ngEl.nativeElement, klass);\n                }\n                else {\n                    this._renderer.removeClass(this._ngEl.nativeElement, klass);\n                }\n            });\n        }\n    }\n}\nNgClass.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgClass, deps: [{ token: i0.IterableDiffers }, { token: i0.KeyValueDiffers }, { token: i0.ElementRef }, { token: i0.Renderer2 }], target: i0.ɵɵFactoryTarget.Directive });\nNgClass.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgClass, isStandalone: true, selector: \"[ngClass]\", inputs: { klass: [\"class\", \"klass\"], ngClass: \"ngClass\" }, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgClass, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[ngClass]',\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: i0.IterableDiffers }, { type: i0.KeyValueDiffers }, { type: i0.ElementRef }, { type: i0.Renderer2 }]; }, propDecorators: { klass: [{\n                type: Input,\n                args: ['class']\n            }], ngClass: [{\n                type: Input,\n                args: ['ngClass']\n            }] } });\n\n/**\n * Instantiates a {@link Component} type and inserts its Host View into the current View.\n * `NgComponentOutlet` provides a declarative approach for dynamic component creation.\n *\n * `NgComponentOutlet` requires a component type, if a falsy value is set the view will clear and\n * any existing component will be destroyed.\n *\n * @usageNotes\n *\n * ### Fine tune control\n *\n * You can control the component creation process by using the following optional attributes:\n *\n * * `ngComponentOutletInjector`: Optional custom {@link Injector} that will be used as parent for\n * the Component. Defaults to the injector of the current view container.\n *\n * * `ngComponentOutletContent`: Optional list of projectable nodes to insert into the content\n * section of the component, if it exists.\n *\n * * `ngComponentOutletNgModule`: Optional NgModule class reference to allow loading another\n * module dynamically, then loading a component from that module.\n *\n * * `ngComponentOutletNgModuleFactory`: Deprecated config option that allows providing optional\n * NgModule factory to allow loading another module dynamically, then loading a component from that\n * module. Use `ngComponentOutletNgModule` instead.\n *\n * ### Syntax\n *\n * Simple\n * ```\n * <ng-container *ngComponentOutlet=\"componentTypeExpression\"></ng-container>\n * ```\n *\n * Customized injector/content\n * ```\n * <ng-container *ngComponentOutlet=\"componentTypeExpression;\n *                                   injector: injectorExpression;\n *                                   content: contentNodesExpression;\">\n * </ng-container>\n * ```\n *\n * Customized NgModule reference\n * ```\n * <ng-container *ngComponentOutlet=\"componentTypeExpression;\n *                                   ngModule: ngModuleClass;\">\n * </ng-container>\n * ```\n *\n * ### A simple example\n *\n * {@example common/ngComponentOutlet/ts/module.ts region='SimpleExample'}\n *\n * A more complete example with additional options:\n *\n * {@example common/ngComponentOutlet/ts/module.ts region='CompleteExample'}\n *\n * @publicApi\n * @ngModule CommonModule\n */\nclass NgComponentOutlet {\n    constructor(_viewContainerRef) {\n        this._viewContainerRef = _viewContainerRef;\n        this.ngComponentOutlet = null;\n    }\n    /** @nodoc */\n    ngOnChanges(changes) {\n        const { _viewContainerRef: viewContainerRef, ngComponentOutletNgModule: ngModule, ngComponentOutletNgModuleFactory: ngModuleFactory, } = this;\n        viewContainerRef.clear();\n        this._componentRef = undefined;\n        if (this.ngComponentOutlet) {\n            const injector = this.ngComponentOutletInjector || viewContainerRef.parentInjector;\n            if (changes['ngComponentOutletNgModule'] || changes['ngComponentOutletNgModuleFactory']) {\n                if (this._moduleRef)\n                    this._moduleRef.destroy();\n                if (ngModule) {\n                    this._moduleRef = createNgModule(ngModule, getParentInjector(injector));\n                }\n                else if (ngModuleFactory) {\n                    this._moduleRef = ngModuleFactory.create(getParentInjector(injector));\n                }\n                else {\n                    this._moduleRef = undefined;\n                }\n            }\n            this._componentRef = viewContainerRef.createComponent(this.ngComponentOutlet, {\n                index: viewContainerRef.length,\n                injector,\n                ngModuleRef: this._moduleRef,\n                projectableNodes: this.ngComponentOutletContent,\n            });\n        }\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        if (this._moduleRef)\n            this._moduleRef.destroy();\n    }\n}\nNgComponentOutlet.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgComponentOutlet, deps: [{ token: i0.ViewContainerRef }], target: i0.ɵɵFactoryTarget.Directive });\nNgComponentOutlet.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgComponentOutlet, isStandalone: true, selector: \"[ngComponentOutlet]\", inputs: { ngComponentOutlet: \"ngComponentOutlet\", ngComponentOutletInjector: \"ngComponentOutletInjector\", ngComponentOutletContent: \"ngComponentOutletContent\", ngComponentOutletNgModule: \"ngComponentOutletNgModule\", ngComponentOutletNgModuleFactory: \"ngComponentOutletNgModuleFactory\" }, usesOnChanges: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgComponentOutlet, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[ngComponentOutlet]',\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: i0.ViewContainerRef }]; }, propDecorators: { ngComponentOutlet: [{\n                type: Input\n            }], ngComponentOutletInjector: [{\n                type: Input\n            }], ngComponentOutletContent: [{\n                type: Input\n            }], ngComponentOutletNgModule: [{\n                type: Input\n            }], ngComponentOutletNgModuleFactory: [{\n                type: Input\n            }] } });\n// Helper function that returns an Injector instance of a parent NgModule.\nfunction getParentInjector(injector) {\n    const parentNgModule = injector.get(NgModuleRef);\n    return parentNgModule.injector;\n}\n\nconst NG_DEV_MODE = typeof ngDevMode === 'undefined' || !!ngDevMode;\n/**\n * @publicApi\n */\nclass NgForOfContext {\n    constructor($implicit, ngForOf, index, count) {\n        this.$implicit = $implicit;\n        this.ngForOf = ngForOf;\n        this.index = index;\n        this.count = count;\n    }\n    get first() {\n        return this.index === 0;\n    }\n    get last() {\n        return this.index === this.count - 1;\n    }\n    get even() {\n        return this.index % 2 === 0;\n    }\n    get odd() {\n        return !this.even;\n    }\n}\n/**\n * A [structural directive](guide/structural-directives) that renders\n * a template for each item in a collection.\n * The directive is placed on an element, which becomes the parent\n * of the cloned templates.\n *\n * The `ngForOf` directive is generally used in the\n * [shorthand form](guide/structural-directives#asterisk) `*ngFor`.\n * In this form, the template to be rendered for each iteration is the content\n * of an anchor element containing the directive.\n *\n * The following example shows the shorthand syntax with some options,\n * contained in an `<li>` element.\n *\n * ```\n * <li *ngFor=\"let item of items; index as i; trackBy: trackByFn\">...</li>\n * ```\n *\n * The shorthand form expands into a long form that uses the `ngForOf` selector\n * on an `<ng-template>` element.\n * The content of the `<ng-template>` element is the `<li>` element that held the\n * short-form directive.\n *\n * Here is the expanded version of the short-form example.\n *\n * ```\n * <ng-template ngFor let-item [ngForOf]=\"items\" let-i=\"index\" [ngForTrackBy]=\"trackByFn\">\n *   <li>...</li>\n * </ng-template>\n * ```\n *\n * Angular automatically expands the shorthand syntax as it compiles the template.\n * The context for each embedded view is logically merged to the current component\n * context according to its lexical position.\n *\n * When using the shorthand syntax, Angular allows only [one structural directive\n * on an element](guide/structural-directives#one-per-element).\n * If you want to iterate conditionally, for example,\n * put the `*ngIf` on a container element that wraps the `*ngFor` element.\n * For further discussion, see\n * [Structural Directives](guide/structural-directives#one-per-element).\n *\n * @usageNotes\n *\n * ### Local variables\n *\n * `NgForOf` provides exported values that can be aliased to local variables.\n * For example:\n *\n *  ```\n * <li *ngFor=\"let user of users; index as i; first as isFirst\">\n *    {{i}}/{{users.length}}. {{user}} <span *ngIf=\"isFirst\">default</span>\n * </li>\n * ```\n *\n * The following exported values can be aliased to local variables:\n *\n * - `$implicit: T`: The value of the individual items in the iterable (`ngForOf`).\n * - `ngForOf: NgIterable<T>`: The value of the iterable expression. Useful when the expression is\n * more complex then a property access, for example when using the async pipe (`userStreams |\n * async`).\n * - `index: number`: The index of the current item in the iterable.\n * - `count: number`: The length of the iterable.\n * - `first: boolean`: True when the item is the first item in the iterable.\n * - `last: boolean`: True when the item is the last item in the iterable.\n * - `even: boolean`: True when the item has an even index in the iterable.\n * - `odd: boolean`: True when the item has an odd index in the iterable.\n *\n * ### Change propagation\n *\n * When the contents of the iterator changes, `NgForOf` makes the corresponding changes to the DOM:\n *\n * * When an item is added, a new instance of the template is added to the DOM.\n * * When an item is removed, its template instance is removed from the DOM.\n * * When items are reordered, their respective templates are reordered in the DOM.\n *\n * Angular uses object identity to track insertions and deletions within the iterator and reproduce\n * those changes in the DOM. This has important implications for animations and any stateful\n * controls that are present, such as `<input>` elements that accept user input. Inserted rows can\n * be animated in, deleted rows can be animated out, and unchanged rows retain any unsaved state\n * such as user input.\n * For more on animations, see [Transitions and Triggers](guide/transition-and-triggers).\n *\n * The identities of elements in the iterator can change while the data does not.\n * This can happen, for example, if the iterator is produced from an RPC to the server, and that\n * RPC is re-run. Even if the data hasn't changed, the second response produces objects with\n * different identities, and Angular must tear down the entire DOM and rebuild it (as if all old\n * elements were deleted and all new elements inserted).\n *\n * To avoid this expensive operation, you can customize the default tracking algorithm.\n * by supplying the `trackBy` option to `NgForOf`.\n * `trackBy` takes a function that has two arguments: `index` and `item`.\n * If `trackBy` is given, Angular tracks changes by the return value of the function.\n *\n * @see [Structural Directives](guide/structural-directives)\n * @ngModule CommonModule\n * @publicApi\n */\nclass NgForOf {\n    /**\n     * The value of the iterable expression, which can be used as a\n     * [template input variable](guide/structural-directives#shorthand).\n     */\n    set ngForOf(ngForOf) {\n        this._ngForOf = ngForOf;\n        this._ngForOfDirty = true;\n    }\n    /**\n     * Specifies a custom `TrackByFunction` to compute the identity of items in an iterable.\n     *\n     * If a custom `TrackByFunction` is not provided, `NgForOf` will use the item's [object\n     * identity](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is)\n     * as the key.\n     *\n     * `NgForOf` uses the computed key to associate items in an iterable with DOM elements\n     * it produces for these items.\n     *\n     * A custom `TrackByFunction` is useful to provide good user experience in cases when items in an\n     * iterable rendered using `NgForOf` have a natural identifier (for example, custom ID or a\n     * primary key), and this iterable could be updated with new object instances that still\n     * represent the same underlying entity (for example, when data is re-fetched from the server,\n     * and the iterable is recreated and re-rendered, but most of the data is still the same).\n     *\n     * @see `TrackByFunction`\n     */\n    set ngForTrackBy(fn) {\n        if (NG_DEV_MODE && fn != null && typeof fn !== 'function') {\n            console.warn(`trackBy must be a function, but received ${JSON.stringify(fn)}. ` +\n                `See https://angular.io/api/common/NgForOf#change-propagation for more information.`);\n        }\n        this._trackByFn = fn;\n    }\n    get ngForTrackBy() {\n        return this._trackByFn;\n    }\n    constructor(_viewContainer, _template, _differs) {\n        this._viewContainer = _viewContainer;\n        this._template = _template;\n        this._differs = _differs;\n        this._ngForOf = null;\n        this._ngForOfDirty = true;\n        this._differ = null;\n    }\n    /**\n     * A reference to the template that is stamped out for each item in the iterable.\n     * @see [template reference variable](guide/template-reference-variables)\n     */\n    set ngForTemplate(value) {\n        // TODO(TS2.1): make TemplateRef<Partial<NgForRowOf<T>>> once we move to TS v2.1\n        // The current type is too restrictive; a template that just uses index, for example,\n        // should be acceptable.\n        if (value) {\n            this._template = value;\n        }\n    }\n    /**\n     * Applies the changes when needed.\n     * @nodoc\n     */\n    ngDoCheck() {\n        if (this._ngForOfDirty) {\n            this._ngForOfDirty = false;\n            // React on ngForOf changes only once all inputs have been initialized\n            const value = this._ngForOf;\n            if (!this._differ && value) {\n                if (NG_DEV_MODE) {\n                    try {\n                        // CAUTION: this logic is duplicated for production mode below, as the try-catch\n                        // is only present in development builds.\n                        this._differ = this._differs.find(value).create(this.ngForTrackBy);\n                    }\n                    catch {\n                        let errorMessage = `Cannot find a differ supporting object '${value}' of type '` +\n                            `${getTypeName(value)}'. NgFor only supports binding to Iterables, such as Arrays.`;\n                        if (typeof value === 'object') {\n                            errorMessage += ' Did you mean to use the keyvalue pipe?';\n                        }\n                        throw new ɵRuntimeError(-2200 /* RuntimeErrorCode.NG_FOR_MISSING_DIFFER */, errorMessage);\n                    }\n                }\n                else {\n                    // CAUTION: this logic is duplicated for development mode above, as the try-catch\n                    // is only present in development builds.\n                    this._differ = this._differs.find(value).create(this.ngForTrackBy);\n                }\n            }\n        }\n        if (this._differ) {\n            const changes = this._differ.diff(this._ngForOf);\n            if (changes)\n                this._applyChanges(changes);\n        }\n    }\n    _applyChanges(changes) {\n        const viewContainer = this._viewContainer;\n        changes.forEachOperation((item, adjustedPreviousIndex, currentIndex) => {\n            if (item.previousIndex == null) {\n                // NgForOf is never \"null\" or \"undefined\" here because the differ detected\n                // that a new item needs to be inserted from the iterable. This implies that\n                // there is an iterable value for \"_ngForOf\".\n                viewContainer.createEmbeddedView(this._template, new NgForOfContext(item.item, this._ngForOf, -1, -1), currentIndex === null ? undefined : currentIndex);\n            }\n            else if (currentIndex == null) {\n                viewContainer.remove(adjustedPreviousIndex === null ? undefined : adjustedPreviousIndex);\n            }\n            else if (adjustedPreviousIndex !== null) {\n                const view = viewContainer.get(adjustedPreviousIndex);\n                viewContainer.move(view, currentIndex);\n                applyViewChange(view, item);\n            }\n        });\n        for (let i = 0, ilen = viewContainer.length; i < ilen; i++) {\n            const viewRef = viewContainer.get(i);\n            const context = viewRef.context;\n            context.index = i;\n            context.count = ilen;\n            context.ngForOf = this._ngForOf;\n        }\n        changes.forEachIdentityChange((record) => {\n            const viewRef = viewContainer.get(record.currentIndex);\n            applyViewChange(viewRef, record);\n        });\n    }\n    /**\n     * Asserts the correct type of the context for the template that `NgForOf` will render.\n     *\n     * The presence of this method is a signal to the Ivy template type-check compiler that the\n     * `NgForOf` structural directive renders its template with a specific context type.\n     */\n    static ngTemplateContextGuard(dir, ctx) {\n        return true;\n    }\n}\nNgForOf.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgForOf, deps: [{ token: i0.ViewContainerRef }, { token: i0.TemplateRef }, { token: i0.IterableDiffers }], target: i0.ɵɵFactoryTarget.Directive });\nNgForOf.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgForOf, isStandalone: true, selector: \"[ngFor][ngForOf]\", inputs: { ngForOf: \"ngForOf\", ngForTrackBy: \"ngForTrackBy\", ngForTemplate: \"ngForTemplate\" }, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgForOf, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[ngFor][ngForOf]',\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: i0.ViewContainerRef }, { type: i0.TemplateRef }, { type: i0.IterableDiffers }]; }, propDecorators: { ngForOf: [{\n                type: Input\n            }], ngForTrackBy: [{\n                type: Input\n            }], ngForTemplate: [{\n                type: Input\n            }] } });\nfunction applyViewChange(view, record) {\n    view.context.$implicit = record.item;\n}\nfunction getTypeName(type) {\n    return type['name'] || typeof type;\n}\n\n/**\n * A structural directive that conditionally includes a template based on the value of\n * an expression coerced to Boolean.\n * When the expression evaluates to true, Angular renders the template\n * provided in a `then` clause, and when  false or null,\n * Angular renders the template provided in an optional `else` clause. The default\n * template for the `else` clause is blank.\n *\n * A [shorthand form](guide/structural-directives#asterisk) of the directive,\n * `*ngIf=\"condition\"`, is generally used, provided\n * as an attribute of the anchor element for the inserted template.\n * Angular expands this into a more explicit version, in which the anchor element\n * is contained in an `<ng-template>` element.\n *\n * Simple form with shorthand syntax:\n *\n * ```\n * <div *ngIf=\"condition\">Content to render when condition is true.</div>\n * ```\n *\n * Simple form with expanded syntax:\n *\n * ```\n * <ng-template [ngIf]=\"condition\"><div>Content to render when condition is\n * true.</div></ng-template>\n * ```\n *\n * Form with an \"else\" block:\n *\n * ```\n * <div *ngIf=\"condition; else elseBlock\">Content to render when condition is true.</div>\n * <ng-template #elseBlock>Content to render when condition is false.</ng-template>\n * ```\n *\n * Shorthand form with \"then\" and \"else\" blocks:\n *\n * ```\n * <div *ngIf=\"condition; then thenBlock else elseBlock\"></div>\n * <ng-template #thenBlock>Content to render when condition is true.</ng-template>\n * <ng-template #elseBlock>Content to render when condition is false.</ng-template>\n * ```\n *\n * Form with storing the value locally:\n *\n * ```\n * <div *ngIf=\"condition as value; else elseBlock\">{{value}}</div>\n * <ng-template #elseBlock>Content to render when value is null.</ng-template>\n * ```\n *\n * @usageNotes\n *\n * The `*ngIf` directive is most commonly used to conditionally show an inline template,\n * as seen in the following  example.\n * The default `else` template is blank.\n *\n * {@example common/ngIf/ts/module.ts region='NgIfSimple'}\n *\n * ### Showing an alternative template using `else`\n *\n * To display a template when `expression` evaluates to false, use an `else` template\n * binding as shown in the following example.\n * The `else` binding points to an `<ng-template>`  element labeled `#elseBlock`.\n * The template can be defined anywhere in the component view, but is typically placed right after\n * `ngIf` for readability.\n *\n * {@example common/ngIf/ts/module.ts region='NgIfElse'}\n *\n * ### Using an external `then` template\n *\n * In the previous example, the then-clause template is specified inline, as the content of the\n * tag that contains the `ngIf` directive. You can also specify a template that is defined\n * externally, by referencing a labeled `<ng-template>` element. When you do this, you can\n * change which template to use at runtime, as shown in the following example.\n *\n * {@example common/ngIf/ts/module.ts region='NgIfThenElse'}\n *\n * ### Storing a conditional result in a variable\n *\n * You might want to show a set of properties from the same object. If you are waiting\n * for asynchronous data, the object can be undefined.\n * In this case, you can use `ngIf` and store the result of the condition in a local\n * variable as shown in the following example.\n *\n * {@example common/ngIf/ts/module.ts region='NgIfAs'}\n *\n * This code uses only one `AsyncPipe`, so only one subscription is created.\n * The conditional statement stores the result of `userStream|async` in the local variable `user`.\n * You can then bind the local `user` repeatedly.\n *\n * The conditional displays the data only if `userStream` returns a value,\n * so you don't need to use the\n * safe-navigation-operator (`?.`)\n * to guard against null values when accessing properties.\n * You can display an alternative template while waiting for the data.\n *\n * ### Shorthand syntax\n *\n * The shorthand syntax `*ngIf` expands into two separate template specifications\n * for the \"then\" and \"else\" clauses. For example, consider the following shorthand statement,\n * that is meant to show a loading page while waiting for data to be loaded.\n *\n * ```\n * <div class=\"hero-list\" *ngIf=\"heroes else loading\">\n *  ...\n * </div>\n *\n * <ng-template #loading>\n *  <div>Loading...</div>\n * </ng-template>\n * ```\n *\n * You can see that the \"else\" clause references the `<ng-template>`\n * with the `#loading` label, and the template for the \"then\" clause\n * is provided as the content of the anchor element.\n *\n * However, when Angular expands the shorthand syntax, it creates\n * another `<ng-template>` tag, with `ngIf` and `ngIfElse` directives.\n * The anchor element containing the template for the \"then\" clause becomes\n * the content of this unlabeled `<ng-template>` tag.\n *\n * ```\n * <ng-template [ngIf]=\"heroes\" [ngIfElse]=\"loading\">\n *  <div class=\"hero-list\">\n *   ...\n *  </div>\n * </ng-template>\n *\n * <ng-template #loading>\n *  <div>Loading...</div>\n * </ng-template>\n * ```\n *\n * The presence of the implicit template object has implications for the nesting of\n * structural directives. For more on this subject, see\n * [Structural Directives](guide/structural-directives#one-per-element).\n *\n * @ngModule CommonModule\n * @publicApi\n */\nclass NgIf {\n    constructor(_viewContainer, templateRef) {\n        this._viewContainer = _viewContainer;\n        this._context = new NgIfContext();\n        this._thenTemplateRef = null;\n        this._elseTemplateRef = null;\n        this._thenViewRef = null;\n        this._elseViewRef = null;\n        this._thenTemplateRef = templateRef;\n    }\n    /**\n     * The Boolean expression to evaluate as the condition for showing a template.\n     */\n    set ngIf(condition) {\n        this._context.$implicit = this._context.ngIf = condition;\n        this._updateView();\n    }\n    /**\n     * A template to show if the condition expression evaluates to true.\n     */\n    set ngIfThen(templateRef) {\n        assertTemplate('ngIfThen', templateRef);\n        this._thenTemplateRef = templateRef;\n        this._thenViewRef = null; // clear previous view if any.\n        this._updateView();\n    }\n    /**\n     * A template to show if the condition expression evaluates to false.\n     */\n    set ngIfElse(templateRef) {\n        assertTemplate('ngIfElse', templateRef);\n        this._elseTemplateRef = templateRef;\n        this._elseViewRef = null; // clear previous view if any.\n        this._updateView();\n    }\n    _updateView() {\n        if (this._context.$implicit) {\n            if (!this._thenViewRef) {\n                this._viewContainer.clear();\n                this._elseViewRef = null;\n                if (this._thenTemplateRef) {\n                    this._thenViewRef =\n                        this._viewContainer.createEmbeddedView(this._thenTemplateRef, this._context);\n                }\n            }\n        }\n        else {\n            if (!this._elseViewRef) {\n                this._viewContainer.clear();\n                this._thenViewRef = null;\n                if (this._elseTemplateRef) {\n                    this._elseViewRef =\n                        this._viewContainer.createEmbeddedView(this._elseTemplateRef, this._context);\n                }\n            }\n        }\n    }\n    /**\n     * Asserts the correct type of the context for the template that `NgIf` will render.\n     *\n     * The presence of this method is a signal to the Ivy template type-check compiler that the\n     * `NgIf` structural directive renders its template with a specific context type.\n     */\n    static ngTemplateContextGuard(dir, ctx) {\n        return true;\n    }\n}\nNgIf.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgIf, deps: [{ token: i0.ViewContainerRef }, { token: i0.TemplateRef }], target: i0.ɵɵFactoryTarget.Directive });\nNgIf.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgIf, isStandalone: true, selector: \"[ngIf]\", inputs: { ngIf: \"ngIf\", ngIfThen: \"ngIfThen\", ngIfElse: \"ngIfElse\" }, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgIf, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[ngIf]',\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: i0.ViewContainerRef }, { type: i0.TemplateRef }]; }, propDecorators: { ngIf: [{\n                type: Input\n            }], ngIfThen: [{\n                type: Input\n            }], ngIfElse: [{\n                type: Input\n            }] } });\n/**\n * @publicApi\n */\nclass NgIfContext {\n    constructor() {\n        this.$implicit = null;\n        this.ngIf = null;\n    }\n}\nfunction assertTemplate(property, templateRef) {\n    const isTemplateRefOrNull = !!(!templateRef || templateRef.createEmbeddedView);\n    if (!isTemplateRefOrNull) {\n        throw new Error(`${property} must be a TemplateRef, but received '${ɵstringify(templateRef)}'.`);\n    }\n}\n\nclass SwitchView {\n    constructor(_viewContainerRef, _templateRef) {\n        this._viewContainerRef = _viewContainerRef;\n        this._templateRef = _templateRef;\n        this._created = false;\n    }\n    create() {\n        this._created = true;\n        this._viewContainerRef.createEmbeddedView(this._templateRef);\n    }\n    destroy() {\n        this._created = false;\n        this._viewContainerRef.clear();\n    }\n    enforceState(created) {\n        if (created && !this._created) {\n            this.create();\n        }\n        else if (!created && this._created) {\n            this.destroy();\n        }\n    }\n}\n/**\n * @ngModule CommonModule\n *\n * @description\n * The `[ngSwitch]` directive on a container specifies an expression to match against.\n * The expressions to match are provided by `ngSwitchCase` directives on views within the container.\n * - Every view that matches is rendered.\n * - If there are no matches, a view with the `ngSwitchDefault` directive is rendered.\n * - Elements within the `[NgSwitch]` statement but outside of any `NgSwitchCase`\n * or `ngSwitchDefault` directive are preserved at the location.\n *\n * @usageNotes\n * Define a container element for the directive, and specify the switch expression\n * to match against as an attribute:\n *\n * ```\n * <container-element [ngSwitch]=\"switch_expression\">\n * ```\n *\n * Within the container, `*ngSwitchCase` statements specify the match expressions\n * as attributes. Include `*ngSwitchDefault` as the final case.\n *\n * ```\n * <container-element [ngSwitch]=\"switch_expression\">\n *    <some-element *ngSwitchCase=\"match_expression_1\">...</some-element>\n * ...\n *    <some-element *ngSwitchDefault>...</some-element>\n * </container-element>\n * ```\n *\n * ### Usage Examples\n *\n * The following example shows how to use more than one case to display the same view:\n *\n * ```\n * <container-element [ngSwitch]=\"switch_expression\">\n *   <!-- the same view can be shown in more than one case -->\n *   <some-element *ngSwitchCase=\"match_expression_1\">...</some-element>\n *   <some-element *ngSwitchCase=\"match_expression_2\">...</some-element>\n *   <some-other-element *ngSwitchCase=\"match_expression_3\">...</some-other-element>\n *   <!--default case when there are no matches -->\n *   <some-element *ngSwitchDefault>...</some-element>\n * </container-element>\n * ```\n *\n * The following example shows how cases can be nested:\n * ```\n * <container-element [ngSwitch]=\"switch_expression\">\n *       <some-element *ngSwitchCase=\"match_expression_1\">...</some-element>\n *       <some-element *ngSwitchCase=\"match_expression_2\">...</some-element>\n *       <some-other-element *ngSwitchCase=\"match_expression_3\">...</some-other-element>\n *       <ng-container *ngSwitchCase=\"match_expression_3\">\n *         <!-- use a ng-container to group multiple root nodes -->\n *         <inner-element></inner-element>\n *         <inner-other-element></inner-other-element>\n *       </ng-container>\n *       <some-element *ngSwitchDefault>...</some-element>\n *     </container-element>\n * ```\n *\n * @publicApi\n * @see `NgSwitchCase`\n * @see `NgSwitchDefault`\n * @see [Structural Directives](guide/structural-directives)\n *\n */\nclass NgSwitch {\n    constructor() {\n        this._defaultViews = [];\n        this._defaultUsed = false;\n        this._caseCount = 0;\n        this._lastCaseCheckIndex = 0;\n        this._lastCasesMatched = false;\n    }\n    set ngSwitch(newValue) {\n        this._ngSwitch = newValue;\n        if (this._caseCount === 0) {\n            this._updateDefaultCases(true);\n        }\n    }\n    /** @internal */\n    _addCase() {\n        return this._caseCount++;\n    }\n    /** @internal */\n    _addDefault(view) {\n        this._defaultViews.push(view);\n    }\n    /** @internal */\n    _matchCase(value) {\n        const matched = value == this._ngSwitch;\n        this._lastCasesMatched = this._lastCasesMatched || matched;\n        this._lastCaseCheckIndex++;\n        if (this._lastCaseCheckIndex === this._caseCount) {\n            this._updateDefaultCases(!this._lastCasesMatched);\n            this._lastCaseCheckIndex = 0;\n            this._lastCasesMatched = false;\n        }\n        return matched;\n    }\n    _updateDefaultCases(useDefault) {\n        if (this._defaultViews.length > 0 && useDefault !== this._defaultUsed) {\n            this._defaultUsed = useDefault;\n            for (const defaultView of this._defaultViews) {\n                defaultView.enforceState(useDefault);\n            }\n        }\n    }\n}\nNgSwitch.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgSwitch, deps: [], target: i0.ɵɵFactoryTarget.Directive });\nNgSwitch.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgSwitch, isStandalone: true, selector: \"[ngSwitch]\", inputs: { ngSwitch: \"ngSwitch\" }, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgSwitch, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[ngSwitch]',\n                    standalone: true,\n                }]\n        }], propDecorators: { ngSwitch: [{\n                type: Input\n            }] } });\n/**\n * @ngModule CommonModule\n *\n * @description\n * Provides a switch case expression to match against an enclosing `ngSwitch` expression.\n * When the expressions match, the given `NgSwitchCase` template is rendered.\n * If multiple match expressions match the switch expression value, all of them are displayed.\n *\n * @usageNotes\n *\n * Within a switch container, `*ngSwitchCase` statements specify the match expressions\n * as attributes. Include `*ngSwitchDefault` as the final case.\n *\n * ```\n * <container-element [ngSwitch]=\"switch_expression\">\n *   <some-element *ngSwitchCase=\"match_expression_1\">...</some-element>\n *   ...\n *   <some-element *ngSwitchDefault>...</some-element>\n * </container-element>\n * ```\n *\n * Each switch-case statement contains an in-line HTML template or template reference\n * that defines the subtree to be selected if the value of the match expression\n * matches the value of the switch expression.\n *\n * Unlike JavaScript, which uses strict equality, Angular uses loose equality.\n * This means that the empty string, `\"\"` matches 0.\n *\n * @publicApi\n * @see `NgSwitch`\n * @see `NgSwitchDefault`\n *\n */\nclass NgSwitchCase {\n    constructor(viewContainer, templateRef, ngSwitch) {\n        this.ngSwitch = ngSwitch;\n        if ((typeof ngDevMode === 'undefined' || ngDevMode) && !ngSwitch) {\n            throwNgSwitchProviderNotFoundError('ngSwitchCase', 'NgSwitchCase');\n        }\n        ngSwitch._addCase();\n        this._view = new SwitchView(viewContainer, templateRef);\n    }\n    /**\n     * Performs case matching. For internal use only.\n     * @nodoc\n     */\n    ngDoCheck() {\n        this._view.enforceState(this.ngSwitch._matchCase(this.ngSwitchCase));\n    }\n}\nNgSwitchCase.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgSwitchCase, deps: [{ token: i0.ViewContainerRef }, { token: i0.TemplateRef }, { token: NgSwitch, host: true, optional: true }], target: i0.ɵɵFactoryTarget.Directive });\nNgSwitchCase.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgSwitchCase, isStandalone: true, selector: \"[ngSwitchCase]\", inputs: { ngSwitchCase: \"ngSwitchCase\" }, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgSwitchCase, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[ngSwitchCase]',\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: i0.ViewContainerRef }, { type: i0.TemplateRef }, { type: NgSwitch, decorators: [{\n                    type: Optional\n                }, {\n                    type: Host\n                }] }]; }, propDecorators: { ngSwitchCase: [{\n                type: Input\n            }] } });\n/**\n * @ngModule CommonModule\n *\n * @description\n *\n * Creates a view that is rendered when no `NgSwitchCase` expressions\n * match the `NgSwitch` expression.\n * This statement should be the final case in an `NgSwitch`.\n *\n * @publicApi\n * @see `NgSwitch`\n * @see `NgSwitchCase`\n *\n */\nclass NgSwitchDefault {\n    constructor(viewContainer, templateRef, ngSwitch) {\n        if ((typeof ngDevMode === 'undefined' || ngDevMode) && !ngSwitch) {\n            throwNgSwitchProviderNotFoundError('ngSwitchDefault', 'NgSwitchDefault');\n        }\n        ngSwitch._addDefault(new SwitchView(viewContainer, templateRef));\n    }\n}\nNgSwitchDefault.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgSwitchDefault, deps: [{ token: i0.ViewContainerRef }, { token: i0.TemplateRef }, { token: NgSwitch, host: true, optional: true }], target: i0.ɵɵFactoryTarget.Directive });\nNgSwitchDefault.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgSwitchDefault, isStandalone: true, selector: \"[ngSwitchDefault]\", ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgSwitchDefault, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[ngSwitchDefault]',\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: i0.ViewContainerRef }, { type: i0.TemplateRef }, { type: NgSwitch, decorators: [{\n                    type: Optional\n                }, {\n                    type: Host\n                }] }]; } });\nfunction throwNgSwitchProviderNotFoundError(attrName, directiveName) {\n    throw new ɵRuntimeError(2000 /* RuntimeErrorCode.PARENT_NG_SWITCH_NOT_FOUND */, `An element with the \"${attrName}\" attribute ` +\n        `(matching the \"${directiveName}\" directive) must be located inside an element with the \"ngSwitch\" attribute ` +\n        `(matching \"NgSwitch\" directive)`);\n}\n\n/**\n * @ngModule CommonModule\n *\n * @usageNotes\n * ```\n * <some-element [ngPlural]=\"value\">\n *   <ng-template ngPluralCase=\"=0\">there is nothing</ng-template>\n *   <ng-template ngPluralCase=\"=1\">there is one</ng-template>\n *   <ng-template ngPluralCase=\"few\">there are a few</ng-template>\n * </some-element>\n * ```\n *\n * @description\n *\n * Adds / removes DOM sub-trees based on a numeric value. Tailored for pluralization.\n *\n * Displays DOM sub-trees that match the switch expression value, or failing that, DOM sub-trees\n * that match the switch expression's pluralization category.\n *\n * To use this directive you must provide a container element that sets the `[ngPlural]` attribute\n * to a switch expression. Inner elements with a `[ngPluralCase]` will display based on their\n * expression:\n * - if `[ngPluralCase]` is set to a value starting with `=`, it will only display if the value\n *   matches the switch expression exactly,\n * - otherwise, the view will be treated as a \"category match\", and will only display if exact\n *   value matches aren't found and the value maps to its category for the defined locale.\n *\n * See http://cldr.unicode.org/index/cldr-spec/plural-rules\n *\n * @publicApi\n */\nclass NgPlural {\n    constructor(_localization) {\n        this._localization = _localization;\n        this._caseViews = {};\n    }\n    set ngPlural(value) {\n        this._updateView(value);\n    }\n    addCase(value, switchView) {\n        this._caseViews[value] = switchView;\n    }\n    _updateView(switchValue) {\n        this._clearViews();\n        const cases = Object.keys(this._caseViews);\n        const key = getPluralCategory(switchValue, cases, this._localization);\n        this._activateView(this._caseViews[key]);\n    }\n    _clearViews() {\n        if (this._activeView)\n            this._activeView.destroy();\n    }\n    _activateView(view) {\n        if (view) {\n            this._activeView = view;\n            this._activeView.create();\n        }\n    }\n}\nNgPlural.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgPlural, deps: [{ token: NgLocalization }], target: i0.ɵɵFactoryTarget.Directive });\nNgPlural.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgPlural, isStandalone: true, selector: \"[ngPlural]\", inputs: { ngPlural: \"ngPlural\" }, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgPlural, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[ngPlural]',\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: NgLocalization }]; }, propDecorators: { ngPlural: [{\n                type: Input\n            }] } });\n/**\n * @ngModule CommonModule\n *\n * @description\n *\n * Creates a view that will be added/removed from the parent {@link NgPlural} when the\n * given expression matches the plural expression according to CLDR rules.\n *\n * @usageNotes\n * ```\n * <some-element [ngPlural]=\"value\">\n *   <ng-template ngPluralCase=\"=0\">...</ng-template>\n *   <ng-template ngPluralCase=\"other\">...</ng-template>\n * </some-element>\n *```\n *\n * See {@link NgPlural} for more details and example.\n *\n * @publicApi\n */\nclass NgPluralCase {\n    constructor(value, template, viewContainer, ngPlural) {\n        this.value = value;\n        const isANumber = !isNaN(Number(value));\n        ngPlural.addCase(isANumber ? `=${value}` : value, new SwitchView(viewContainer, template));\n    }\n}\nNgPluralCase.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgPluralCase, deps: [{ token: 'ngPluralCase', attribute: true }, { token: i0.TemplateRef }, { token: i0.ViewContainerRef }, { token: NgPlural, host: true }], target: i0.ɵɵFactoryTarget.Directive });\nNgPluralCase.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgPluralCase, isStandalone: true, selector: \"[ngPluralCase]\", ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgPluralCase, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[ngPluralCase]',\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Attribute,\n                    args: ['ngPluralCase']\n                }] }, { type: i0.TemplateRef }, { type: i0.ViewContainerRef }, { type: NgPlural, decorators: [{\n                    type: Host\n                }] }]; } });\n\n/**\n * @ngModule CommonModule\n *\n * @usageNotes\n *\n * Set the font of the containing element to the result of an expression.\n *\n * ```\n * <some-element [ngStyle]=\"{'font-style': styleExp}\">...</some-element>\n * ```\n *\n * Set the width of the containing element to a pixel value returned by an expression.\n *\n * ```\n * <some-element [ngStyle]=\"{'max-width.px': widthExp}\">...</some-element>\n * ```\n *\n * Set a collection of style values using an expression that returns key-value pairs.\n *\n * ```\n * <some-element [ngStyle]=\"objExp\">...</some-element>\n * ```\n *\n * @description\n *\n * An attribute directive that updates styles for the containing HTML element.\n * Sets one or more style properties, specified as colon-separated key-value pairs.\n * The key is a style name, with an optional `.<unit>` suffix\n * (such as 'top.px', 'font-style.em').\n * The value is an expression to be evaluated.\n * The resulting non-null value, expressed in the given unit,\n * is assigned to the given style property.\n * If the result of evaluation is null, the corresponding style is removed.\n *\n * @publicApi\n */\nclass NgStyle {\n    constructor(_ngEl, _differs, _renderer) {\n        this._ngEl = _ngEl;\n        this._differs = _differs;\n        this._renderer = _renderer;\n        this._ngStyle = null;\n        this._differ = null;\n    }\n    set ngStyle(values) {\n        this._ngStyle = values;\n        if (!this._differ && values) {\n            this._differ = this._differs.find(values).create();\n        }\n    }\n    ngDoCheck() {\n        if (this._differ) {\n            const changes = this._differ.diff(this._ngStyle);\n            if (changes) {\n                this._applyChanges(changes);\n            }\n        }\n    }\n    _setStyle(nameAndUnit, value) {\n        const [name, unit] = nameAndUnit.split('.');\n        const flags = name.indexOf('-') === -1 ? undefined : RendererStyleFlags2.DashCase;\n        if (value != null) {\n            this._renderer.setStyle(this._ngEl.nativeElement, name, unit ? `${value}${unit}` : value, flags);\n        }\n        else {\n            this._renderer.removeStyle(this._ngEl.nativeElement, name, flags);\n        }\n    }\n    _applyChanges(changes) {\n        changes.forEachRemovedItem((record) => this._setStyle(record.key, null));\n        changes.forEachAddedItem((record) => this._setStyle(record.key, record.currentValue));\n        changes.forEachChangedItem((record) => this._setStyle(record.key, record.currentValue));\n    }\n}\nNgStyle.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgStyle, deps: [{ token: i0.ElementRef }, { token: i0.KeyValueDiffers }, { token: i0.Renderer2 }], target: i0.ɵɵFactoryTarget.Directive });\nNgStyle.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgStyle, isStandalone: true, selector: \"[ngStyle]\", inputs: { ngStyle: \"ngStyle\" }, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgStyle, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[ngStyle]',\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.KeyValueDiffers }, { type: i0.Renderer2 }]; }, propDecorators: { ngStyle: [{\n                type: Input,\n                args: ['ngStyle']\n            }] } });\n\n/**\n * @ngModule CommonModule\n *\n * @description\n *\n * Inserts an embedded view from a prepared `TemplateRef`.\n *\n * You can attach a context object to the `EmbeddedViewRef` by setting `[ngTemplateOutletContext]`.\n * `[ngTemplateOutletContext]` should be an object, the object's keys will be available for binding\n * by the local template `let` declarations.\n *\n * @usageNotes\n * ```\n * <ng-container *ngTemplateOutlet=\"templateRefExp; context: contextExp\"></ng-container>\n * ```\n *\n * Using the key `$implicit` in the context object will set its value as default.\n *\n * ### Example\n *\n * {@example common/ngTemplateOutlet/ts/module.ts region='NgTemplateOutlet'}\n *\n * @publicApi\n */\nclass NgTemplateOutlet {\n    constructor(_viewContainerRef) {\n        this._viewContainerRef = _viewContainerRef;\n        this._viewRef = null;\n        /**\n         * A context object to attach to the {@link EmbeddedViewRef}. This should be an\n         * object, the object's keys will be available for binding by the local template `let`\n         * declarations.\n         * Using the key `$implicit` in the context object will set its value as default.\n         */\n        this.ngTemplateOutletContext = null;\n        /**\n         * A string defining the template reference and optionally the context object for the template.\n         */\n        this.ngTemplateOutlet = null;\n        /** Injector to be used within the embedded view. */\n        this.ngTemplateOutletInjector = null;\n    }\n    /** @nodoc */\n    ngOnChanges(changes) {\n        if (changes['ngTemplateOutlet'] || changes['ngTemplateOutletInjector']) {\n            const viewContainerRef = this._viewContainerRef;\n            if (this._viewRef) {\n                viewContainerRef.remove(viewContainerRef.indexOf(this._viewRef));\n            }\n            if (this.ngTemplateOutlet) {\n                const { ngTemplateOutlet: template, ngTemplateOutletContext: context, ngTemplateOutletInjector: injector } = this;\n                this._viewRef = viewContainerRef.createEmbeddedView(template, context, injector ? { injector } : undefined);\n            }\n            else {\n                this._viewRef = null;\n            }\n        }\n        else if (this._viewRef && changes['ngTemplateOutletContext'] && this.ngTemplateOutletContext) {\n            this._viewRef.context = this.ngTemplateOutletContext;\n        }\n    }\n}\nNgTemplateOutlet.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgTemplateOutlet, deps: [{ token: i0.ViewContainerRef }], target: i0.ɵɵFactoryTarget.Directive });\nNgTemplateOutlet.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgTemplateOutlet, isStandalone: true, selector: \"[ngTemplateOutlet]\", inputs: { ngTemplateOutletContext: \"ngTemplateOutletContext\", ngTemplateOutlet: \"ngTemplateOutlet\", ngTemplateOutletInjector: \"ngTemplateOutletInjector\" }, usesOnChanges: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgTemplateOutlet, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[ngTemplateOutlet]',\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: i0.ViewContainerRef }]; }, propDecorators: { ngTemplateOutletContext: [{\n                type: Input\n            }], ngTemplateOutlet: [{\n                type: Input\n            }], ngTemplateOutletInjector: [{\n                type: Input\n            }] } });\n\n/**\n * A collection of Angular directives that are likely to be used in each and every Angular\n * application.\n */\nconst COMMON_DIRECTIVES = [\n    NgClass,\n    NgComponentOutlet,\n    NgForOf,\n    NgIf,\n    NgTemplateOutlet,\n    NgStyle,\n    NgSwitch,\n    NgSwitchCase,\n    NgSwitchDefault,\n    NgPlural,\n    NgPluralCase,\n];\n\nfunction invalidPipeArgumentError(type, value) {\n    return new ɵRuntimeError(2100 /* RuntimeErrorCode.INVALID_PIPE_ARGUMENT */, ngDevMode && `InvalidPipeArgument: '${value}' for pipe '${ɵstringify(type)}'`);\n}\n\nclass SubscribableStrategy {\n    createSubscription(async, updateLatestValue) {\n        return async.subscribe({\n            next: updateLatestValue,\n            error: (e) => {\n                throw e;\n            }\n        });\n    }\n    dispose(subscription) {\n        subscription.unsubscribe();\n    }\n}\nclass PromiseStrategy {\n    createSubscription(async, updateLatestValue) {\n        return async.then(updateLatestValue, e => {\n            throw e;\n        });\n    }\n    dispose(subscription) { }\n}\nconst _promiseStrategy = new PromiseStrategy();\nconst _subscribableStrategy = new SubscribableStrategy();\n/**\n * @ngModule CommonModule\n * @description\n *\n * Unwraps a value from an asynchronous primitive.\n *\n * The `async` pipe subscribes to an `Observable` or `Promise` and returns the latest value it has\n * emitted. When a new value is emitted, the `async` pipe marks the component to be checked for\n * changes. When the component gets destroyed, the `async` pipe unsubscribes automatically to avoid\n * potential memory leaks. When the reference of the expression changes, the `async` pipe\n * automatically unsubscribes from the old `Observable` or `Promise` and subscribes to the new one.\n *\n * @usageNotes\n *\n * ### Examples\n *\n * This example binds a `Promise` to the view. Clicking the `Resolve` button resolves the\n * promise.\n *\n * {@example common/pipes/ts/async_pipe.ts region='AsyncPipePromise'}\n *\n * It's also possible to use `async` with Observables. The example below binds the `time` Observable\n * to the view. The Observable continuously updates the view with the current time.\n *\n * {@example common/pipes/ts/async_pipe.ts region='AsyncPipeObservable'}\n *\n * @publicApi\n */\nclass AsyncPipe {\n    constructor(ref) {\n        this._latestValue = null;\n        this._subscription = null;\n        this._obj = null;\n        this._strategy = null;\n        // Assign `ref` into `this._ref` manually instead of declaring `_ref` in the constructor\n        // parameter list, as the type of `this._ref` includes `null` unlike the type of `ref`.\n        this._ref = ref;\n    }\n    ngOnDestroy() {\n        if (this._subscription) {\n            this._dispose();\n        }\n        // Clear the `ChangeDetectorRef` and its association with the view data, to mitigate\n        // potential memory leaks in Observables that could otherwise cause the view data to\n        // be retained.\n        // https://github.com/angular/angular/issues/17624\n        this._ref = null;\n    }\n    transform(obj) {\n        if (!this._obj) {\n            if (obj) {\n                this._subscribe(obj);\n            }\n            return this._latestValue;\n        }\n        if (obj !== this._obj) {\n            this._dispose();\n            return this.transform(obj);\n        }\n        return this._latestValue;\n    }\n    _subscribe(obj) {\n        this._obj = obj;\n        this._strategy = this._selectStrategy(obj);\n        this._subscription = this._strategy.createSubscription(obj, (value) => this._updateLatestValue(obj, value));\n    }\n    _selectStrategy(obj) {\n        if (ɵisPromise(obj)) {\n            return _promiseStrategy;\n        }\n        if (ɵisSubscribable(obj)) {\n            return _subscribableStrategy;\n        }\n        throw invalidPipeArgumentError(AsyncPipe, obj);\n    }\n    _dispose() {\n        // Note: `dispose` is only called if a subscription has been initialized before, indicating\n        // that `this._strategy` is also available.\n        this._strategy.dispose(this._subscription);\n        this._latestValue = null;\n        this._subscription = null;\n        this._obj = null;\n    }\n    _updateLatestValue(async, value) {\n        if (async === this._obj) {\n            this._latestValue = value;\n            // Note: `this._ref` is only cleared in `ngOnDestroy` so is known to be available when a\n            // value is being updated.\n            this._ref.markForCheck();\n        }\n    }\n}\nAsyncPipe.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: AsyncPipe, deps: [{ token: i0.ChangeDetectorRef }], target: i0.ɵɵFactoryTarget.Pipe });\nAsyncPipe.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: AsyncPipe, isStandalone: true, name: \"async\", pure: false });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: AsyncPipe, decorators: [{\n            type: Pipe,\n            args: [{\n                    name: 'async',\n                    pure: false,\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: i0.ChangeDetectorRef }]; } });\n\n/**\n * Transforms text to all lower case.\n *\n * @see `UpperCasePipe`\n * @see `TitleCasePipe`\n * @usageNotes\n *\n * The following example defines a view that allows the user to enter\n * text, and then uses the pipe to convert the input text to all lower case.\n *\n * <code-example path=\"common/pipes/ts/lowerupper_pipe.ts\" region='LowerUpperPipe'></code-example>\n *\n * @ngModule CommonModule\n * @publicApi\n */\nclass LowerCasePipe {\n    transform(value) {\n        if (value == null)\n            return null;\n        if (typeof value !== 'string') {\n            throw invalidPipeArgumentError(LowerCasePipe, value);\n        }\n        return value.toLowerCase();\n    }\n}\nLowerCasePipe.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: LowerCasePipe, deps: [], target: i0.ɵɵFactoryTarget.Pipe });\nLowerCasePipe.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: LowerCasePipe, isStandalone: true, name: \"lowercase\" });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: LowerCasePipe, decorators: [{\n            type: Pipe,\n            args: [{\n                    name: 'lowercase',\n                    standalone: true,\n                }]\n        }] });\n//\n// Regex below matches any Unicode word and number compatible with ES5. In ES2018 the same result\n// can be achieved by using /[0-9\\p{L}]\\S*/gu and also known as Unicode Property Escapes\n// (https://2ality.com/2017/07/regexp-unicode-property-escapes.html). Since there is no\n// transpilation of this functionality down to ES5 without external tool, the only solution is\n// to use already transpiled form. Example can be found here -\n// https://mothereff.in/regexpu#input=var+regex+%3D+%2F%5B0-9%5Cp%7BL%7D%5D%5CS*%2Fgu%3B%0A%0A&unicodePropertyEscape=1\n//\nconst unicodeWordMatch = 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* Transforms text to title case.\n * Capitalizes the first letter of each word and transforms the\n * rest of the word to lower case.\n * Words are delimited by any whitespace character, such as a space, tab, or line-feed character.\n *\n * @see `LowerCasePipe`\n * @see `UpperCasePipe`\n *\n * @usageNotes\n * The following example shows the result of transforming various strings into title case.\n *\n * <code-example path=\"common/pipes/ts/titlecase_pipe.ts\" region='TitleCasePipe'></code-example>\n *\n * @ngModule CommonModule\n * @publicApi\n */\nclass TitleCasePipe {\n    transform(value) {\n        if (value == null)\n            return null;\n        if (typeof value !== 'string') {\n            throw invalidPipeArgumentError(TitleCasePipe, value);\n        }\n        return value.replace(unicodeWordMatch, (txt => txt[0].toUpperCase() + txt.slice(1).toLowerCase()));\n    }\n}\nTitleCasePipe.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: TitleCasePipe, deps: [], target: i0.ɵɵFactoryTarget.Pipe });\nTitleCasePipe.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: TitleCasePipe, isStandalone: true, name: \"titlecase\" });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: TitleCasePipe, decorators: [{\n            type: Pipe,\n            args: [{\n                    name: 'titlecase',\n                    standalone: true,\n                }]\n        }] });\n/**\n * Transforms text to all upper case.\n * @see `LowerCasePipe`\n * @see `TitleCasePipe`\n *\n * @ngModule CommonModule\n * @publicApi\n */\nclass UpperCasePipe {\n    transform(value) {\n        if (value == null)\n            return null;\n        if (typeof value !== 'string') {\n            throw invalidPipeArgumentError(UpperCasePipe, value);\n        }\n        return value.toUpperCase();\n    }\n}\nUpperCasePipe.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: UpperCasePipe, deps: [], target: i0.ɵɵFactoryTarget.Pipe });\nUpperCasePipe.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: UpperCasePipe, isStandalone: true, name: \"uppercase\" });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: UpperCasePipe, decorators: [{\n            type: Pipe,\n            args: [{\n                    name: 'uppercase',\n                    standalone: true,\n                }]\n        }] });\n\n/**\n * The default date format of Angular date pipe, which corresponds to the following format:\n * `'MMM d,y'` (e.g. `Jun 15, 2015`)\n */\nconst DEFAULT_DATE_FORMAT = 'mediumDate';\n\n/**\n * Optionally-provided default timezone to use for all instances of `DatePipe` (such as `'+0430'`).\n * If the value isn't provided, the `DatePipe` will use the end-user's local system timezone.\n *\n * @deprecated use DATE_PIPE_DEFAULT_OPTIONS token to configure DatePipe\n */\nconst DATE_PIPE_DEFAULT_TIMEZONE = new InjectionToken('DATE_PIPE_DEFAULT_TIMEZONE');\n/**\n * DI token that allows to provide default configuration for the `DatePipe` instances in an\n * application. The value is an object which can include the following fields:\n * - `dateFormat`: configures the default date format. If not provided, the `DatePipe`\n * will use the 'mediumDate' as a value.\n * - `timezone`: configures the default timezone. If not provided, the `DatePipe` will\n * use the end-user's local system timezone.\n *\n * @see `DatePipeConfig`\n *\n * @usageNotes\n *\n * Various date pipe default values can be overwritten by providing this token with\n * the value that has this interface.\n *\n * For example:\n *\n * Override the default date format by providing a value using the token:\n * ```typescript\n * providers: [\n *   {provide: DATE_PIPE_DEFAULT_OPTIONS, useValue: {dateFormat: 'shortDate'}}\n * ]\n * ```\n *\n * Override the default timezone by providing a value using the token:\n * ```typescript\n * providers: [\n *   {provide: DATE_PIPE_DEFAULT_OPTIONS, useValue: {timezone: '-1200'}}\n * ]\n * ```\n */\nconst DATE_PIPE_DEFAULT_OPTIONS = new InjectionToken('DATE_PIPE_DEFAULT_OPTIONS');\n// clang-format off\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a date value according to locale rules.\n *\n * `DatePipe` is executed only when it detects a pure change to the input value.\n * A pure change is either a change to a primitive input value\n * (such as `String`, `Number`, `Boolean`, or `Symbol`),\n * or a changed object reference (such as `Date`, `Array`, `Function`, or `Object`).\n *\n * Note that mutating a `Date` object does not cause the pipe to be rendered again.\n * To ensure that the pipe is executed, you must create a new `Date` object.\n *\n * Only the `en-US` locale data comes with Angular. To localize dates\n * in another language, you must import the corresponding locale data.\n * See the [I18n guide](guide/i18n-common-format-data-locale) for more information.\n *\n * The time zone of the formatted value can be specified either by passing it in as the second\n * parameter of the pipe, or by setting the default through the `DATE_PIPE_DEFAULT_OPTIONS`\n * injection token. The value that is passed in as the second parameter takes precedence over\n * the one defined using the injection token.\n *\n * @see `formatDate()`\n *\n *\n * @usageNotes\n *\n * The result of this pipe is not reevaluated when the input is mutated. To avoid the need to\n * reformat the date on every change-detection cycle, treat the date as an immutable object\n * and change the reference when the pipe needs to run again.\n *\n * ### Pre-defined format options\n *\n * | Option        | Equivalent to                       | Examples (given in `en-US` locale)              |\n * |---------------|-------------------------------------|-------------------------------------------------|\n * | `'short'`     | `'M/d/yy, h:mm a'`                  | `6/15/15, 9:03 AM`                              |\n * | `'medium'`    | `'MMM d, y, h:mm:ss a'`             | `Jun 15, 2015, 9:03:01 AM`                      |\n * | `'long'`      | `'MMMM d, y, h:mm:ss a z'`          | `June 15, 2015 at 9:03:01 AM GMT+1`             |\n * | `'full'`      | `'EEEE, MMMM d, y, h:mm:ss a zzzz'` | `Monday, June 15, 2015 at 9:03:01 AM GMT+01:00` |\n * | `'shortDate'` | `'M/d/yy'`                          | `6/15/15`                                       |\n * | `'mediumDate'`| `'MMM d, y'`                        | `Jun 15, 2015`                                  |\n * | `'longDate'`  | `'MMMM d, y'`                       | `June 15, 2015`                                 |\n * | `'fullDate'`  | `'EEEE, MMMM d, y'`                 | `Monday, June 15, 2015`                         |\n * | `'shortTime'` | `'h:mm a'`                          | `9:03 AM`                                       |\n * | `'mediumTime'`| `'h:mm:ss a'`                       | `9:03:01 AM`                                    |\n * | `'longTime'`  | `'h:mm:ss a z'`                     | `9:03:01 AM GMT+1`                              |\n * | `'fullTime'`  | `'h:mm:ss a zzzz'`                  | `9:03:01 AM GMT+01:00`                          |\n *\n * ### Custom format options\n *\n * You can construct a format string using symbols to specify the components\n * of a date-time value, as described in the following table.\n * Format details depend on the locale.\n * Fields marked with (*) are only available in the extra data set for the given locale.\n *\n *  | Field type          | Format      | Description                                                   | Example Value                                              |\n *  |-------------------- |-------------|---------------------------------------------------------------|------------------------------------------------------------|\n *  | Era                 | G, GG & GGG | Abbreviated                                                   | AD                                                         |\n *  |                     | GGGG        | Wide                                                          | Anno Domini                                                |\n *  |                     | GGGGG       | Narrow                                                        | A                                                          |\n *  | Year                | y           | Numeric: minimum digits                                       | 2, 20, 201, 2017, 20173                                    |\n *  |                     | yy          | Numeric: 2 digits + zero padded                               | 02, 20, 01, 17, 73                                         |\n *  |                     | yyy         | Numeric: 3 digits + zero padded                               | 002, 020, 201, 2017, 20173                                 |\n *  |                     | yyyy        | Numeric: 4 digits or more + zero padded                       | 0002, 0020, 0201, 2017, 20173                              |\n *  | Week-numbering year | Y           | Numeric: minimum digits                                       | 2, 20, 201, 2017, 20173                                    |\n *  |                     | YY          | Numeric: 2 digits + zero padded                               | 02, 20, 01, 17, 73                                         |\n *  |                     | YYY         | Numeric: 3 digits + zero padded                               | 002, 020, 201, 2017, 20173                                 |\n *  |                     | YYYY        | Numeric: 4 digits or more + zero padded                       | 0002, 0020, 0201, 2017, 20173                              |\n *  | Month               | M           | Numeric: 1 digit                                              | 9, 12                                                      |\n *  |                     | MM          | Numeric: 2 digits + zero padded                               | 09, 12                                                     |\n *  |                     | MMM         | Abbreviated                                                   | Sep                                                        |\n *  |                     | MMMM        | Wide                                                          | September                                                  |\n *  |                     | MMMMM       | Narrow                                                        | S                                                          |\n *  | Month standalone    | L           | Numeric: 1 digit                                              | 9, 12                                                      |\n *  |                     | LL          | Numeric: 2 digits + zero padded                               | 09, 12                                                     |\n *  |                     | LLL         | Abbreviated                                                   | Sep                                                        |\n *  |                     | LLLL        | Wide                                                          | September                                                  |\n *  |                     | LLLLL       | Narrow                                                        | S                                                          |\n *  | Week of year        | w           | Numeric: minimum digits                                       | 1... 53                                                    |\n *  |                     | ww          | Numeric: 2 digits + zero padded                               | 01... 53                                                   |\n *  | Week of month       | W           | Numeric: 1 digit                                              | 1... 5                                                     |\n *  | Day of month        | d           | Numeric: minimum digits                                       | 1                                                          |\n *  |                     | dd          | Numeric: 2 digits + zero padded                               | 01                                                         |\n *  | Week day            | E, EE & EEE | Abbreviated                                                   | Tue                                                        |\n *  |                     | EEEE        | Wide                                                          | Tuesday                                                    |\n *  |                     | EEEEE       | Narrow                                                        | T                                                          |\n *  |                     | EEEEEE      | Short                                                         | Tu                                                         |\n *  | Week day standalone | c, cc       | Numeric: 1 digit                                              | 2                                                          |\n *  |                     | ccc         | Abbreviated                                                   | Tue                                                        |\n *  |                     | cccc        | Wide                                                          | Tuesday                                                    |\n *  |                     | ccccc       | Narrow                                                        | T                                                          |\n *  |                     | cccccc      | Short                                                         | Tu                                                         |\n *  | Period              | a, aa & aaa | Abbreviated                                                   | am/pm or AM/PM                                             |\n *  |                     | aaaa        | Wide (fallback to `a` when missing)                           | ante meridiem/post meridiem                                |\n *  |                     | aaaaa       | Narrow                                                        | a/p                                                        |\n *  | Period*             | B, BB & BBB | Abbreviated                                                   | mid.                                                       |\n *  |                     | BBBB        | Wide                                                          | am, pm, midnight, noon, morning, afternoon, evening, night |\n *  |                     | BBBBB       | Narrow                                                        | md                                                         |\n *  | Period standalone*  | b, bb & bbb | Abbreviated                                                   | mid.                                                       |\n *  |                     | bbbb        | Wide                                                          | am, pm, midnight, noon, morning, afternoon, evening, night |\n *  |                     | bbbbb       | Narrow                                                        | md                                                         |\n *  | Hour 1-12           | h           | Numeric: minimum digits                                       | 1, 12                                                      |\n *  |                     | hh          | Numeric: 2 digits + zero padded                               | 01, 12                                                     |\n *  | Hour 0-23           | H           | Numeric: minimum digits                                       | 0, 23                                                      |\n *  |                     | HH          | Numeric: 2 digits + zero padded                               | 00, 23                                                     |\n *  | Minute              | m           | Numeric: minimum digits                                       | 8, 59                                                      |\n *  |                     | mm          | Numeric: 2 digits + zero padded                               | 08, 59                                                     |\n *  | Second              | s           | Numeric: minimum digits                                       | 0... 59                                                    |\n *  |                     | ss          | Numeric: 2 digits + zero padded                               | 00... 59                                                   |\n *  | Fractional seconds  | S           | Numeric: 1 digit                                              | 0... 9                                                     |\n *  |                     | SS          | Numeric: 2 digits + zero padded                               | 00... 99                                                   |\n *  |                     | SSS         | Numeric: 3 digits + zero padded (= milliseconds)              | 000... 999                                                 |\n *  | Zone                | z, zz & zzz | Short specific non location format (fallback to O)            | GMT-8                                                      |\n *  |                     | zzzz        | Long specific non location format (fallback to OOOO)          | GMT-08:00                                                  |\n *  |                     | Z, ZZ & ZZZ | ISO8601 basic format                                          | -0800                                                      |\n *  |                     | ZZZZ        | Long localized GMT format                                     | GMT-8:00                                                   |\n *  |                     | ZZZZZ       | ISO8601 extended format + Z indicator for offset 0 (= XXXXX)  | -08:00                                                     |\n *  |                     | O, OO & OOO | Short localized GMT format                                    | GMT-8                                                      |\n *  |                     | OOOO        | Long localized GMT format                                     | GMT-08:00                                                  |\n *\n *\n * ### Format examples\n *\n * These examples transform a date into various formats,\n * assuming that `dateObj` is a JavaScript `Date` object for\n * year: 2015, month: 6, day: 15, hour: 21, minute: 43, second: 11,\n * given in the local time for the `en-US` locale.\n *\n * ```\n * {{ dateObj | date }}               // output is 'Jun 15, 2015'\n * {{ dateObj | date:'medium' }}      // output is 'Jun 15, 2015, 9:43:11 PM'\n * {{ dateObj | date:'shortTime' }}   // output is '9:43 PM'\n * {{ dateObj | date:'mm:ss' }}       // output is '43:11'\n * ```\n *\n * ### Usage example\n *\n * The following component uses a date pipe to display the current date in different formats.\n *\n * ```\n * @Component({\n *  selector: 'date-pipe',\n *  template: `<div>\n *    <p>Today is {{today | date}}</p>\n *    <p>Or if you prefer, {{today | date:'fullDate'}}</p>\n *    <p>The time is {{today | date:'h:mm a z'}}</p>\n *  </div>`\n * })\n * // Get the current date and time as a date-time value.\n * export class DatePipeComponent {\n *   today: number = Date.now();\n * }\n * ```\n *\n * @publicApi\n */\n// clang-format on\nclass DatePipe {\n    constructor(locale, defaultTimezone, defaultOptions) {\n        this.locale = locale;\n        this.defaultTimezone = defaultTimezone;\n        this.defaultOptions = defaultOptions;\n    }\n    transform(value, format, timezone, locale) {\n        if (value == null || value === '' || value !== value)\n            return null;\n        try {\n            const _format = format ?? this.defaultOptions?.dateFormat ?? DEFAULT_DATE_FORMAT;\n            const _timezone = timezone ?? this.defaultOptions?.timezone ?? this.defaultTimezone ?? undefined;\n            return formatDate(value, _format, locale || this.locale, _timezone);\n        }\n        catch (error) {\n            throw invalidPipeArgumentError(DatePipe, error.message);\n        }\n    }\n}\nDatePipe.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: DatePipe, deps: [{ token: LOCALE_ID }, { token: DATE_PIPE_DEFAULT_TIMEZONE, optional: true }, { token: DATE_PIPE_DEFAULT_OPTIONS, optional: true }], target: i0.ɵɵFactoryTarget.Pipe });\nDatePipe.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: DatePipe, isStandalone: true, name: \"date\" });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: DatePipe, decorators: [{\n            type: Pipe,\n            args: [{\n                    name: 'date',\n                    pure: true,\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [LOCALE_ID]\n                }] }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DATE_PIPE_DEFAULT_TIMEZONE]\n                }, {\n                    type: Optional\n                }] }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DATE_PIPE_DEFAULT_OPTIONS]\n                }, {\n                    type: Optional\n                }] }]; } });\n\nconst _INTERPOLATION_REGEXP = /#/g;\n/**\n * @ngModule CommonModule\n * @description\n *\n * Maps a value to a string that pluralizes the value according to locale rules.\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example common/pipes/ts/i18n_pipe.ts region='I18nPluralPipeComponent'}\n *\n * @publicApi\n */\nclass I18nPluralPipe {\n    constructor(_localization) {\n        this._localization = _localization;\n    }\n    /**\n     * @param value the number to be formatted\n     * @param pluralMap an object that mimics the ICU format, see\n     * https://unicode-org.github.io/icu/userguide/format_parse/messages/.\n     * @param locale a `string` defining the locale to use (uses the current {@link LOCALE_ID} by\n     * default).\n     */\n    transform(value, pluralMap, locale) {\n        if (value == null)\n            return '';\n        if (typeof pluralMap !== 'object' || pluralMap === null) {\n            throw invalidPipeArgumentError(I18nPluralPipe, pluralMap);\n        }\n        const key = getPluralCategory(value, Object.keys(pluralMap), this._localization, locale);\n        return pluralMap[key].replace(_INTERPOLATION_REGEXP, value.toString());\n    }\n}\nI18nPluralPipe.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: I18nPluralPipe, deps: [{ token: NgLocalization }], target: i0.ɵɵFactoryTarget.Pipe });\nI18nPluralPipe.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: I18nPluralPipe, isStandalone: true, name: \"i18nPlural\" });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: I18nPluralPipe, decorators: [{\n            type: Pipe,\n            args: [{\n                    name: 'i18nPlural',\n                    pure: true,\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: NgLocalization }]; } });\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Generic selector that displays the string that matches the current value.\n *\n * If none of the keys of the `mapping` match the `value`, then the content\n * of the `other` key is returned when present, otherwise an empty string is returned.\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example common/pipes/ts/i18n_pipe.ts region='I18nSelectPipeComponent'}\n *\n * @publicApi\n */\nclass I18nSelectPipe {\n    /**\n     * @param value a string to be internationalized.\n     * @param mapping an object that indicates the text that should be displayed\n     * for different values of the provided `value`.\n     */\n    transform(value, mapping) {\n        if (value == null)\n            return '';\n        if (typeof mapping !== 'object' || typeof value !== 'string') {\n            throw invalidPipeArgumentError(I18nSelectPipe, mapping);\n        }\n        if (mapping.hasOwnProperty(value)) {\n            return mapping[value];\n        }\n        if (mapping.hasOwnProperty('other')) {\n            return mapping['other'];\n        }\n        return '';\n    }\n}\nI18nSelectPipe.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: I18nSelectPipe, deps: [], target: i0.ɵɵFactoryTarget.Pipe });\nI18nSelectPipe.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: I18nSelectPipe, isStandalone: true, name: \"i18nSelect\" });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: I18nSelectPipe, decorators: [{\n            type: Pipe,\n            args: [{\n                    name: 'i18nSelect',\n                    pure: true,\n                    standalone: true,\n                }]\n        }] });\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Converts a value into its JSON-format representation.  Useful for debugging.\n *\n * @usageNotes\n *\n * The following component uses a JSON pipe to convert an object\n * to JSON format, and displays the string in both formats for comparison.\n *\n * {@example common/pipes/ts/json_pipe.ts region='JsonPipe'}\n *\n * @publicApi\n */\nclass JsonPipe {\n    /**\n     * @param value A value of any type to convert into a JSON-format string.\n     */\n    transform(value) {\n        return JSON.stringify(value, null, 2);\n    }\n}\nJsonPipe.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: JsonPipe, deps: [], target: i0.ɵɵFactoryTarget.Pipe });\nJsonPipe.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: JsonPipe, isStandalone: true, name: \"json\", pure: false });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: JsonPipe, decorators: [{\n            type: Pipe,\n            args: [{\n                    name: 'json',\n                    pure: false,\n                    standalone: true,\n                }]\n        }] });\n\nfunction makeKeyValuePair(key, value) {\n    return { key: key, value: value };\n}\n/**\n * @ngModule CommonModule\n * @description\n *\n * Transforms Object or Map into an array of key value pairs.\n *\n * The output array will be ordered by keys.\n * By default the comparator will be by Unicode point value.\n * You can optionally pass a compareFn if your keys are complex types.\n *\n * @usageNotes\n * ### Examples\n *\n * This examples show how an Object or a Map can be iterated by ngFor with the use of this\n * keyvalue pipe.\n *\n * {@example common/pipes/ts/keyvalue_pipe.ts region='KeyValuePipe'}\n *\n * @publicApi\n */\nclass KeyValuePipe {\n    constructor(differs) {\n        this.differs = differs;\n        this.keyValues = [];\n        this.compareFn = defaultComparator;\n    }\n    transform(input, compareFn = defaultComparator) {\n        if (!input || (!(input instanceof Map) && typeof input !== 'object')) {\n            return null;\n        }\n        if (!this.differ) {\n            // make a differ for whatever type we've been passed in\n            this.differ = this.differs.find(input).create();\n        }\n        const differChanges = this.differ.diff(input);\n        const compareFnChanged = compareFn !== this.compareFn;\n        if (differChanges) {\n            this.keyValues = [];\n            differChanges.forEachItem((r) => {\n                this.keyValues.push(makeKeyValuePair(r.key, r.currentValue));\n            });\n        }\n        if (differChanges || compareFnChanged) {\n            this.keyValues.sort(compareFn);\n            this.compareFn = compareFn;\n        }\n        return this.keyValues;\n    }\n}\nKeyValuePipe.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: KeyValuePipe, deps: [{ token: i0.KeyValueDiffers }], target: i0.ɵɵFactoryTarget.Pipe });\nKeyValuePipe.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: KeyValuePipe, isStandalone: true, name: \"keyvalue\", pure: false });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: KeyValuePipe, decorators: [{\n            type: Pipe,\n            args: [{\n                    name: 'keyvalue',\n                    pure: false,\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: i0.KeyValueDiffers }]; } });\nfunction defaultComparator(keyValueA, keyValueB) {\n    const a = keyValueA.key;\n    const b = keyValueB.key;\n    // if same exit with 0;\n    if (a === b)\n        return 0;\n    // make sure that undefined are at the end of the sort.\n    if (a === undefined)\n        return 1;\n    if (b === undefined)\n        return -1;\n    // make sure that nulls are at the end of the sort.\n    if (a === null)\n        return 1;\n    if (b === null)\n        return -1;\n    if (typeof a == 'string' && typeof b == 'string') {\n        return a < b ? -1 : 1;\n    }\n    if (typeof a == 'number' && typeof b == 'number') {\n        return a - b;\n    }\n    if (typeof a == 'boolean' && typeof b == 'boolean') {\n        return a < b ? -1 : 1;\n    }\n    // `a` and `b` are of different types. Compare their string values.\n    const aString = String(a);\n    const bString = String(b);\n    return aString == bString ? 0 : aString < bString ? -1 : 1;\n}\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a value according to digit options and locale rules.\n * Locale determines group sizing and separator,\n * decimal point character, and other locale-specific configurations.\n *\n * @see `formatNumber()`\n *\n * @usageNotes\n *\n * ### digitsInfo\n *\n * The value's decimal representation is specified by the `digitsInfo`\n * parameter, written in the following format:<br>\n *\n * ```\n * {minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}\n * ```\n *\n *  - `minIntegerDigits`:\n * The minimum number of integer digits before the decimal point.\n * Default is 1.\n *\n * - `minFractionDigits`:\n * The minimum number of digits after the decimal point.\n * Default is 0.\n *\n *  - `maxFractionDigits`:\n * The maximum number of digits after the decimal point.\n * Default is 3.\n *\n * If the formatted value is truncated it will be rounded using the \"to-nearest\" method:\n *\n * ```\n * {{3.6 | number: '1.0-0'}}\n * <!--will output '4'-->\n *\n * {{-3.6 | number:'1.0-0'}}\n * <!--will output '-4'-->\n * ```\n *\n * ### locale\n *\n * `locale` will format a value according to locale rules.\n * Locale determines group sizing and separator,\n * decimal point character, and other locale-specific configurations.\n *\n * When not supplied, uses the value of `LOCALE_ID`, which is `en-US` by default.\n *\n * See [Setting your app locale](guide/i18n-common-locale-id).\n *\n * ### Example\n *\n * The following code shows how the pipe transforms values\n * according to various format specifications,\n * where the caller's default locale is `en-US`.\n *\n * <code-example path=\"common/pipes/ts/number_pipe.ts\" region='NumberPipe'></code-example>\n *\n * @publicApi\n */\nclass DecimalPipe {\n    constructor(_locale) {\n        this._locale = _locale;\n    }\n    /**\n     * @param value The value to be formatted.\n     * @param digitsInfo Sets digit and decimal representation.\n     * [See more](#digitsinfo).\n     * @param locale Specifies what locale format rules to use.\n     * [See more](#locale).\n     */\n    transform(value, digitsInfo, locale) {\n        if (!isValue(value))\n            return null;\n        locale = locale || this._locale;\n        try {\n            const num = strToNumber(value);\n            return formatNumber(num, locale, digitsInfo);\n        }\n        catch (error) {\n            throw invalidPipeArgumentError(DecimalPipe, error.message);\n        }\n    }\n}\nDecimalPipe.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: DecimalPipe, deps: [{ token: LOCALE_ID }], target: i0.ɵɵFactoryTarget.Pipe });\nDecimalPipe.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: DecimalPipe, isStandalone: true, name: \"number\" });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: DecimalPipe, decorators: [{\n            type: Pipe,\n            args: [{\n                    name: 'number',\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [LOCALE_ID]\n                }] }]; } });\n/**\n * @ngModule CommonModule\n * @description\n *\n * Transforms a number to a percentage\n * string, formatted according to locale rules that determine group sizing and\n * separator, decimal-point character, and other locale-specific\n * configurations.\n *\n * @see `formatPercent()`\n *\n * @usageNotes\n * The following code shows how the pipe transforms numbers\n * into text strings, according to various format specifications,\n * where the caller's default locale is `en-US`.\n *\n * <code-example path=\"common/pipes/ts/percent_pipe.ts\" region='PercentPipe'></code-example>\n *\n * @publicApi\n */\nclass PercentPipe {\n    constructor(_locale) {\n        this._locale = _locale;\n    }\n    /**\n     *\n     * @param value The number to be formatted as a percentage.\n     * @param digitsInfo Decimal representation options, specified by a string\n     * in the following format:<br>\n     * <code>{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}</code>.\n     *   - `minIntegerDigits`: The minimum number of integer digits before the decimal point.\n     * Default is `1`.\n     *   - `minFractionDigits`: The minimum number of digits after the decimal point.\n     * Default is `0`.\n     *   - `maxFractionDigits`: The maximum number of digits after the decimal point.\n     * Default is `0`.\n     * @param locale A locale code for the locale format rules to use.\n     * When not supplied, uses the value of `LOCALE_ID`, which is `en-US` by default.\n     * See [Setting your app locale](guide/i18n-common-locale-id).\n     */\n    transform(value, digitsInfo, locale) {\n        if (!isValue(value))\n            return null;\n        locale = locale || this._locale;\n        try {\n            const num = strToNumber(value);\n            return formatPercent(num, locale, digitsInfo);\n        }\n        catch (error) {\n            throw invalidPipeArgumentError(PercentPipe, error.message);\n        }\n    }\n}\nPercentPipe.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PercentPipe, deps: [{ token: LOCALE_ID }], target: i0.ɵɵFactoryTarget.Pipe });\nPercentPipe.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: PercentPipe, isStandalone: true, name: \"percent\" });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PercentPipe, decorators: [{\n            type: Pipe,\n            args: [{\n                    name: 'percent',\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [LOCALE_ID]\n                }] }]; } });\n/**\n * @ngModule CommonModule\n * @description\n *\n * Transforms a number to a currency string, formatted according to locale rules\n * that determine group sizing and separator, decimal-point character,\n * and other locale-specific configurations.\n *\n *\n * @see `getCurrencySymbol()`\n * @see `formatCurrency()`\n *\n * @usageNotes\n * The following code shows how the pipe transforms numbers\n * into text strings, according to various format specifications,\n * where the caller's default locale is `en-US`.\n *\n * <code-example path=\"common/pipes/ts/currency_pipe.ts\" region='CurrencyPipe'></code-example>\n *\n * @publicApi\n */\nclass CurrencyPipe {\n    constructor(_locale, _defaultCurrencyCode = 'USD') {\n        this._locale = _locale;\n        this._defaultCurrencyCode = _defaultCurrencyCode;\n    }\n    /**\n     *\n     * @param value The number to be formatted as currency.\n     * @param currencyCode The [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217) currency code,\n     * such as `USD` for the US dollar and `EUR` for the euro. The default currency code can be\n     * configured using the `DEFAULT_CURRENCY_CODE` injection token.\n     * @param display The format for the currency indicator. One of the following:\n     *   - `code`: Show the code (such as `USD`).\n     *   - `symbol`(default): Show the symbol (such as `$`).\n     *   - `symbol-narrow`: Use the narrow symbol for locales that have two symbols for their\n     * currency.\n     * For example, the Canadian dollar CAD has the symbol `CA$` and the symbol-narrow `$`. If the\n     * locale has no narrow symbol, uses the standard symbol for the locale.\n     *   - String: Use the given string value instead of a code or a symbol.\n     * For example, an empty string will suppress the currency & symbol.\n     *   - Boolean (marked deprecated in v5): `true` for symbol and false for `code`.\n     *\n     * @param digitsInfo Decimal representation options, specified by a string\n     * in the following format:<br>\n     * <code>{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}</code>.\n     *   - `minIntegerDigits`: The minimum number of integer digits before the decimal point.\n     * Default is `1`.\n     *   - `minFractionDigits`: The minimum number of digits after the decimal point.\n     * Default is `2`.\n     *   - `maxFractionDigits`: The maximum number of digits after the decimal point.\n     * Default is `2`.\n     * If not provided, the number will be formatted with the proper amount of digits,\n     * depending on what the [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217) specifies.\n     * For example, the Canadian dollar has 2 digits, whereas the Chilean peso has none.\n     * @param locale A locale code for the locale format rules to use.\n     * When not supplied, uses the value of `LOCALE_ID`, which is `en-US` by default.\n     * See [Setting your app locale](guide/i18n-common-locale-id).\n     */\n    transform(value, currencyCode = this._defaultCurrencyCode, display = 'symbol', digitsInfo, locale) {\n        if (!isValue(value))\n            return null;\n        locale = locale || this._locale;\n        if (typeof display === 'boolean') {\n            if ((typeof ngDevMode === 'undefined' || ngDevMode) && console && console.warn) {\n                console.warn(`Warning: the currency pipe has been changed in Angular v5. The symbolDisplay option (third parameter) is now a string instead of a boolean. The accepted values are \"code\", \"symbol\" or \"symbol-narrow\".`);\n            }\n            display = display ? 'symbol' : 'code';\n        }\n        let currency = currencyCode || this._defaultCurrencyCode;\n        if (display !== 'code') {\n            if (display === 'symbol' || display === 'symbol-narrow') {\n                currency = getCurrencySymbol(currency, display === 'symbol' ? 'wide' : 'narrow', locale);\n            }\n            else {\n                currency = display;\n            }\n        }\n        try {\n            const num = strToNumber(value);\n            return formatCurrency(num, locale, currency, currencyCode, digitsInfo);\n        }\n        catch (error) {\n            throw invalidPipeArgumentError(CurrencyPipe, error.message);\n        }\n    }\n}\nCurrencyPipe.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: CurrencyPipe, deps: [{ token: LOCALE_ID }, { token: DEFAULT_CURRENCY_CODE }], target: i0.ɵɵFactoryTarget.Pipe });\nCurrencyPipe.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: CurrencyPipe, isStandalone: true, name: \"currency\" });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: CurrencyPipe, decorators: [{\n            type: Pipe,\n            args: [{\n                    name: 'currency',\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [LOCALE_ID]\n                }] }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DEFAULT_CURRENCY_CODE]\n                }] }]; } });\nfunction isValue(value) {\n    return !(value == null || value === '' || value !== value);\n}\n/**\n * Transforms a string into a number (if needed).\n */\nfunction strToNumber(value) {\n    // Convert strings to numbers\n    if (typeof value === 'string' && !isNaN(Number(value) - parseFloat(value))) {\n        return Number(value);\n    }\n    if (typeof value !== 'number') {\n        throw new Error(`${value} is not a number`);\n    }\n    return value;\n}\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Creates a new `Array` or `String` containing a subset (slice) of the elements.\n *\n * @usageNotes\n *\n * All behavior is based on the expected behavior of the JavaScript API `Array.prototype.slice()`\n * and `String.prototype.slice()`.\n *\n * When operating on an `Array`, the returned `Array` is always a copy even when all\n * the elements are being returned.\n *\n * When operating on a blank value, the pipe returns the blank value.\n *\n * ### List Example\n *\n * This `ngFor` example:\n *\n * {@example common/pipes/ts/slice_pipe.ts region='SlicePipe_list'}\n *\n * produces the following:\n *\n * ```html\n * <li>b</li>\n * <li>c</li>\n * ```\n *\n * ### String Examples\n *\n * {@example common/pipes/ts/slice_pipe.ts region='SlicePipe_string'}\n *\n * @publicApi\n */\nclass SlicePipe {\n    transform(value, start, end) {\n        if (value == null)\n            return null;\n        if (!this.supports(value)) {\n            throw invalidPipeArgumentError(SlicePipe, value);\n        }\n        return value.slice(start, end);\n    }\n    supports(obj) {\n        return typeof obj === 'string' || Array.isArray(obj);\n    }\n}\nSlicePipe.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: SlicePipe, deps: [], target: i0.ɵɵFactoryTarget.Pipe });\nSlicePipe.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: SlicePipe, isStandalone: true, name: \"slice\", pure: false });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: SlicePipe, decorators: [{\n            type: Pipe,\n            args: [{\n                    name: 'slice',\n                    pure: false,\n                    standalone: true,\n                }]\n        }] });\n\n/**\n * @module\n * @description\n * This module provides a set of common Pipes.\n */\n/**\n * A collection of Angular pipes that are likely to be used in each and every application.\n */\nconst COMMON_PIPES = [\n    AsyncPipe,\n    UpperCasePipe,\n    LowerCasePipe,\n    JsonPipe,\n    SlicePipe,\n    DecimalPipe,\n    PercentPipe,\n    TitleCasePipe,\n    CurrencyPipe,\n    DatePipe,\n    I18nPluralPipe,\n    I18nSelectPipe,\n    KeyValuePipe,\n];\n\n// Note: This does not contain the location providers,\n// as they need some platform specific implementations to work.\n/**\n * Exports all the basic Angular directives and pipes,\n * such as `NgIf`, `NgForOf`, `DecimalPipe`, and so on.\n * Re-exported by `BrowserModule`, which is included automatically in the root\n * `AppModule` when you create a new app with the CLI `new` command.\n *\n * @publicApi\n */\nclass CommonModule {\n}\nCommonModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: CommonModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nCommonModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: CommonModule, imports: [NgClass, NgComponentOutlet, NgForOf, NgIf, NgTemplateOutlet, NgStyle, NgSwitch, NgSwitchCase, NgSwitchDefault, NgPlural, NgPluralCase, AsyncPipe, UpperCasePipe, LowerCasePipe, JsonPipe, SlicePipe, DecimalPipe, PercentPipe, TitleCasePipe, CurrencyPipe, DatePipe, I18nPluralPipe, I18nSelectPipe, KeyValuePipe], exports: [NgClass, NgComponentOutlet, NgForOf, NgIf, NgTemplateOutlet, NgStyle, NgSwitch, NgSwitchCase, NgSwitchDefault, NgPlural, NgPluralCase, AsyncPipe, UpperCasePipe, LowerCasePipe, JsonPipe, SlicePipe, DecimalPipe, PercentPipe, TitleCasePipe, CurrencyPipe, DatePipe, I18nPluralPipe, I18nSelectPipe, KeyValuePipe] });\nCommonModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: CommonModule });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: CommonModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    imports: [COMMON_DIRECTIVES, COMMON_PIPES],\n                    exports: [COMMON_DIRECTIVES, COMMON_PIPES],\n                }]\n        }] });\n\nconst PLATFORM_BROWSER_ID = 'browser';\nconst PLATFORM_SERVER_ID = 'server';\nconst PLATFORM_WORKER_APP_ID = 'browserWorkerApp';\nconst PLATFORM_WORKER_UI_ID = 'browserWorkerUi';\n/**\n * Returns whether a platform id represents a browser platform.\n * @publicApi\n */\nfunction isPlatformBrowser(platformId) {\n    return platformId === PLATFORM_BROWSER_ID;\n}\n/**\n * Returns whether a platform id represents a server platform.\n * @publicApi\n */\nfunction isPlatformServer(platformId) {\n    return platformId === PLATFORM_SERVER_ID;\n}\n/**\n * Returns whether a platform id represents a web worker app platform.\n * @publicApi\n */\nfunction isPlatformWorkerApp(platformId) {\n    return platformId === PLATFORM_WORKER_APP_ID;\n}\n/**\n * Returns whether a platform id represents a web worker UI platform.\n * @publicApi\n */\nfunction isPlatformWorkerUi(platformId) {\n    return platformId === PLATFORM_WORKER_UI_ID;\n}\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of the common package.\n */\n/**\n * @publicApi\n */\nconst VERSION = new Version('15.2.10');\n\n/**\n * Defines a scroll position manager. Implemented by `BrowserViewportScroller`.\n *\n * @publicApi\n */\nclass ViewportScroller {\n}\n// De-sugared tree-shakable injection\n// See #23917\n/** @nocollapse */\nViewportScroller.ɵprov = ɵɵdefineInjectable({\n    token: ViewportScroller,\n    providedIn: 'root',\n    factory: () => new BrowserViewportScroller(ɵɵinject(DOCUMENT), window)\n});\n/**\n * Manages the scroll position for a browser window.\n */\nclass BrowserViewportScroller {\n    constructor(document, window) {\n        this.document = document;\n        this.window = window;\n        this.offset = () => [0, 0];\n    }\n    /**\n     * Configures the top offset used when scrolling to an anchor.\n     * @param offset A position in screen coordinates (a tuple with x and y values)\n     * or a function that returns the top offset position.\n     *\n     */\n    setOffset(offset) {\n        if (Array.isArray(offset)) {\n            this.offset = () => offset;\n        }\n        else {\n            this.offset = offset;\n        }\n    }\n    /**\n     * Retrieves the current scroll position.\n     * @returns The position in screen coordinates.\n     */\n    getScrollPosition() {\n        if (this.supportsScrolling()) {\n            return [this.window.pageXOffset, this.window.pageYOffset];\n        }\n        else {\n            return [0, 0];\n        }\n    }\n    /**\n     * Sets the scroll position.\n     * @param position The new position in screen coordinates.\n     */\n    scrollToPosition(position) {\n        if (this.supportsScrolling()) {\n            this.window.scrollTo(position[0], position[1]);\n        }\n    }\n    /**\n     * Scrolls to an element and attempts to focus the element.\n     *\n     * Note that the function name here is misleading in that the target string may be an ID for a\n     * non-anchor element.\n     *\n     * @param target The ID of an element or name of the anchor.\n     *\n     * @see https://html.spec.whatwg.org/#the-indicated-part-of-the-document\n     * @see https://html.spec.whatwg.org/#scroll-to-fragid\n     */\n    scrollToAnchor(target) {\n        if (!this.supportsScrolling()) {\n            return;\n        }\n        const elSelected = findAnchorFromDocument(this.document, target);\n        if (elSelected) {\n            this.scrollToElement(elSelected);\n            // After scrolling to the element, the spec dictates that we follow the focus steps for the\n            // target. Rather than following the robust steps, simply attempt focus.\n            //\n            // @see https://html.spec.whatwg.org/#get-the-focusable-area\n            // @see https://developer.mozilla.org/en-US/docs/Web/API/HTMLOrForeignElement/focus\n            // @see https://html.spec.whatwg.org/#focusable-area\n            elSelected.focus();\n        }\n    }\n    /**\n     * Disables automatic scroll restoration provided by the browser.\n     */\n    setHistoryScrollRestoration(scrollRestoration) {\n        if (this.supportScrollRestoration()) {\n            const history = this.window.history;\n            if (history && history.scrollRestoration) {\n                history.scrollRestoration = scrollRestoration;\n            }\n        }\n    }\n    /**\n     * Scrolls to an element using the native offset and the specified offset set on this scroller.\n     *\n     * The offset can be used when we know that there is a floating header and scrolling naively to an\n     * element (ex: `scrollIntoView`) leaves the element hidden behind the floating header.\n     */\n    scrollToElement(el) {\n        const rect = el.getBoundingClientRect();\n        const left = rect.left + this.window.pageXOffset;\n        const top = rect.top + this.window.pageYOffset;\n        const offset = this.offset();\n        this.window.scrollTo(left - offset[0], top - offset[1]);\n    }\n    /**\n     * We only support scroll restoration when we can get a hold of window.\n     * This means that we do not support this behavior when running in a web worker.\n     *\n     * Lifting this restriction right now would require more changes in the dom adapter.\n     * Since webworkers aren't widely used, we will lift it once RouterScroller is\n     * battle-tested.\n     */\n    supportScrollRestoration() {\n        try {\n            if (!this.supportsScrolling()) {\n                return false;\n            }\n            // The `scrollRestoration` property could be on the `history` instance or its prototype.\n            const scrollRestorationDescriptor = getScrollRestorationProperty(this.window.history) ||\n                getScrollRestorationProperty(Object.getPrototypeOf(this.window.history));\n            // We can write to the `scrollRestoration` property if it is a writable data field or it has a\n            // setter function.\n            return !!scrollRestorationDescriptor &&\n                !!(scrollRestorationDescriptor.writable || scrollRestorationDescriptor.set);\n        }\n        catch {\n            return false;\n        }\n    }\n    supportsScrolling() {\n        try {\n            return !!this.window && !!this.window.scrollTo && 'pageXOffset' in this.window;\n        }\n        catch {\n            return false;\n        }\n    }\n}\nfunction getScrollRestorationProperty(obj) {\n    return Object.getOwnPropertyDescriptor(obj, 'scrollRestoration');\n}\nfunction findAnchorFromDocument(document, target) {\n    const documentResult = document.getElementById(target) || document.getElementsByName(target)[0];\n    if (documentResult) {\n        return documentResult;\n    }\n    // `getElementById` and `getElementsByName` won't pierce through the shadow DOM so we\n    // have to traverse the DOM manually and do the lookup through the shadow roots.\n    if (typeof document.createTreeWalker === 'function' && document.body &&\n        (document.body.createShadowRoot || document.body.attachShadow)) {\n        const treeWalker = document.createTreeWalker(document.body, NodeFilter.SHOW_ELEMENT);\n        let currentNode = treeWalker.currentNode;\n        while (currentNode) {\n            const shadowRoot = currentNode.shadowRoot;\n            if (shadowRoot) {\n                // Note that `ShadowRoot` doesn't support `getElementsByName`\n                // so we have to fall back to `querySelector`.\n                const result = shadowRoot.getElementById(target) || shadowRoot.querySelector(`[name=\"${target}\"]`);\n                if (result) {\n                    return result;\n                }\n            }\n            currentNode = treeWalker.nextNode();\n        }\n    }\n    return null;\n}\n/**\n * Provides an empty implementation of the viewport scroller.\n */\nclass NullViewportScroller {\n    /**\n     * Empty implementation\n     */\n    setOffset(offset) { }\n    /**\n     * Empty implementation\n     */\n    getScrollPosition() {\n        return [0, 0];\n    }\n    /**\n     * Empty implementation\n     */\n    scrollToPosition(position) { }\n    /**\n     * Empty implementation\n     */\n    scrollToAnchor(anchor) { }\n    /**\n     * Empty implementation\n     */\n    setHistoryScrollRestoration(scrollRestoration) { }\n}\n\n/**\n * A wrapper around the `XMLHttpRequest` constructor.\n *\n * @publicApi\n */\nclass XhrFactory {\n}\n\n// Converts a string that represents a URL into a URL class instance.\nfunction getUrl(src, win) {\n    // Don't use a base URL is the URL is absolute.\n    return isAbsoluteUrl(src) ? new URL(src) : new URL(src, win.location.href);\n}\n// Checks whether a URL is absolute (i.e. starts with `http://` or `https://`).\nfunction isAbsoluteUrl(src) {\n    return /^https?:\\/\\//.test(src);\n}\n// Given a URL, extract the hostname part.\n// If a URL is a relative one - the URL is returned as is.\nfunction extractHostname(url) {\n    return isAbsoluteUrl(url) ? (new URL(url)).hostname : url;\n}\nfunction isValidPath(path) {\n    const isString = typeof path === 'string';\n    if (!isString || path.trim() === '') {\n        return false;\n    }\n    // Calling new URL() will throw if the path string is malformed\n    try {\n        const url = new URL(path);\n        return true;\n    }\n    catch {\n        return false;\n    }\n}\nfunction normalizePath(path) {\n    return path.endsWith('/') ? path.slice(0, -1) : path;\n}\nfunction normalizeSrc(src) {\n    return src.startsWith('/') ? src.slice(1) : src;\n}\n\n/**\n * Noop image loader that does no transformation to the original src and just returns it as is.\n * This loader is used as a default one if more specific logic is not provided in an app config.\n *\n * @see `ImageLoader`\n * @see `NgOptimizedImage`\n */\nconst noopImageLoader = (config) => config.src;\n/**\n * Injection token that configures the image loader function.\n *\n * @see `ImageLoader`\n * @see `NgOptimizedImage`\n * @publicApi\n */\nconst IMAGE_LOADER = new InjectionToken('ImageLoader', {\n    providedIn: 'root',\n    factory: () => noopImageLoader,\n});\n/**\n * Internal helper function that makes it easier to introduce custom image loaders for the\n * `NgOptimizedImage` directive. It is enough to specify a URL builder function to obtain full DI\n * configuration for a given loader: a DI token corresponding to the actual loader function, plus DI\n * tokens managing preconnect check functionality.\n * @param buildUrlFn a function returning a full URL based on loader's configuration\n * @param exampleUrls example of full URLs for a given loader (used in error messages)\n * @returns a set of DI providers corresponding to the configured image loader\n */\nfunction createImageLoader(buildUrlFn, exampleUrls) {\n    return function provideImageLoader(path) {\n        if (!isValidPath(path)) {\n            throwInvalidPathError(path, exampleUrls || []);\n        }\n        // The trailing / is stripped (if provided) to make URL construction (concatenation) easier in\n        // the individual loader functions.\n        path = normalizePath(path);\n        const loaderFn = (config) => {\n            if (isAbsoluteUrl(config.src)) {\n                // Image loader functions expect an image file name (e.g. `my-image.png`)\n                // or a relative path + a file name (e.g. `/a/b/c/my-image.png`) as an input,\n                // so the final absolute URL can be constructed.\n                // When an absolute URL is provided instead - the loader can not\n                // build a final URL, thus the error is thrown to indicate that.\n                throwUnexpectedAbsoluteUrlError(path, config.src);\n            }\n            return buildUrlFn(path, { ...config, src: normalizeSrc(config.src) });\n        };\n        const providers = [{ provide: IMAGE_LOADER, useValue: loaderFn }];\n        return providers;\n    };\n}\nfunction throwInvalidPathError(path, exampleUrls) {\n    throw new ɵRuntimeError(2959 /* RuntimeErrorCode.INVALID_LOADER_ARGUMENTS */, ngDevMode &&\n        `Image loader has detected an invalid path (\\`${path}\\`). ` +\n            `To fix this, supply a path using one of the following formats: ${exampleUrls.join(' or ')}`);\n}\nfunction throwUnexpectedAbsoluteUrlError(path, url) {\n    throw new ɵRuntimeError(2959 /* RuntimeErrorCode.INVALID_LOADER_ARGUMENTS */, ngDevMode &&\n        `Image loader has detected a \\`<img>\\` tag with an invalid \\`ngSrc\\` attribute: ${url}. ` +\n            `This image loader expects \\`ngSrc\\` to be a relative URL - ` +\n            `however the provided value is an absolute URL. ` +\n            `To fix this, provide \\`ngSrc\\` as a path relative to the base URL ` +\n            `configured for this loader (\\`${path}\\`).`);\n}\n\n/**\n * Function that generates an ImageLoader for [Cloudflare Image\n * Resizing](https://developers.cloudflare.com/images/image-resizing/) and turns it into an Angular\n * provider. Note: Cloudflare has multiple image products - this provider is specifically for\n * Cloudflare Image Resizing; it will not work with Cloudflare Images or Cloudflare Polish.\n *\n * @param path Your domain name, e.g. https://mysite.com\n * @returns Provider that provides an ImageLoader function\n *\n * @publicApi\n */\nconst provideCloudflareLoader = createImageLoader(createCloudflareUrl, ngDevMode ? ['https://<ZONE>/cdn-cgi/image/<OPTIONS>/<SOURCE-IMAGE>'] : undefined);\nfunction createCloudflareUrl(path, config) {\n    let params = `format=auto`;\n    if (config.width) {\n        params += `,width=${config.width}`;\n    }\n    // Cloudflare image URLs format:\n    // https://developers.cloudflare.com/images/image-resizing/url-format/\n    return `${path}/cdn-cgi/image/${params}/${config.src}`;\n}\n\n/**\n * Name and URL tester for Cloudinary.\n */\nconst cloudinaryLoaderInfo = {\n    name: 'Cloudinary',\n    testUrl: isCloudinaryUrl\n};\nconst CLOUDINARY_LOADER_REGEX = /https?\\:\\/\\/[^\\/]+\\.cloudinary\\.com\\/.+/;\n/**\n * Tests whether a URL is from Cloudinary CDN.\n */\nfunction isCloudinaryUrl(url) {\n    return CLOUDINARY_LOADER_REGEX.test(url);\n}\n/**\n * Function that generates an ImageLoader for Cloudinary and turns it into an Angular provider.\n *\n * @param path Base URL of your Cloudinary images\n * This URL should match one of the following formats:\n * https://res.cloudinary.com/mysite\n * https://mysite.cloudinary.com\n * https://subdomain.mysite.com\n * @returns Set of providers to configure the Cloudinary loader.\n *\n * @publicApi\n */\nconst provideCloudinaryLoader = createImageLoader(createCloudinaryUrl, ngDevMode ?\n    [\n        'https://res.cloudinary.com/mysite', 'https://mysite.cloudinary.com',\n        'https://subdomain.mysite.com'\n    ] :\n    undefined);\nfunction createCloudinaryUrl(path, config) {\n    // Cloudinary image URLformat:\n    // https://cloudinary.com/documentation/image_transformations#transformation_url_structure\n    // Example of a Cloudinary image URL:\n    // https://res.cloudinary.com/mysite/image/upload/c_scale,f_auto,q_auto,w_600/marketing/tile-topics-m.png\n    let params = `f_auto,q_auto`; // sets image format and quality to \"auto\"\n    if (config.width) {\n        params += `,w_${config.width}`;\n    }\n    return `${path}/image/upload/${params}/${config.src}`;\n}\n\n/**\n * Name and URL tester for ImageKit.\n */\nconst imageKitLoaderInfo = {\n    name: 'ImageKit',\n    testUrl: isImageKitUrl,\n};\nconst IMAGE_KIT_LOADER_REGEX = /https?\\:\\/\\/[^\\/]+\\.imagekit\\.io\\/.+/;\n/**\n * Tests whether a URL is from ImageKit CDN.\n */\nfunction isImageKitUrl(url) {\n    return IMAGE_KIT_LOADER_REGEX.test(url);\n}\n/**\n * Function that generates an ImageLoader for ImageKit and turns it into an Angular provider.\n *\n * @param path Base URL of your ImageKit images\n * This URL should match one of the following formats:\n * https://ik.imagekit.io/myaccount\n * https://subdomain.mysite.com\n * @returns Set of providers to configure the ImageKit loader.\n *\n * @publicApi\n */\nconst provideImageKitLoader = createImageLoader(createImagekitUrl, ngDevMode ? ['https://ik.imagekit.io/mysite', 'https://subdomain.mysite.com'] : undefined);\nfunction createImagekitUrl(path, config) {\n    // Example of an ImageKit image URL:\n    // https://ik.imagekit.io/demo/tr:w-300,h-300/medium_cafe_B1iTdD0C.jpg\n    const { src, width } = config;\n    let urlSegments;\n    if (width) {\n        const params = `tr:w-${width}`;\n        urlSegments = [path, params, src];\n    }\n    else {\n        urlSegments = [path, src];\n    }\n    return urlSegments.join('/');\n}\n\n/**\n * Name and URL tester for Imgix.\n */\nconst imgixLoaderInfo = {\n    name: 'Imgix',\n    testUrl: isImgixUrl\n};\nconst IMGIX_LOADER_REGEX = /https?\\:\\/\\/[^\\/]+\\.imgix\\.net\\/.+/;\n/**\n * Tests whether a URL is from Imgix CDN.\n */\nfunction isImgixUrl(url) {\n    return IMGIX_LOADER_REGEX.test(url);\n}\n/**\n * Function that generates an ImageLoader for Imgix and turns it into an Angular provider.\n *\n * @param path path to the desired Imgix origin,\n * e.g. https://somepath.imgix.net or https://images.mysite.com\n * @returns Set of providers to configure the Imgix loader.\n *\n * @publicApi\n */\nconst provideImgixLoader = createImageLoader(createImgixUrl, ngDevMode ? ['https://somepath.imgix.net/'] : undefined);\nfunction createImgixUrl(path, config) {\n    const url = new URL(`${path}/${config.src}`);\n    // This setting ensures the smallest allowable format is set.\n    url.searchParams.set('auto', 'format');\n    if (config.width) {\n        url.searchParams.set('w', config.width.toString());\n    }\n    return url.href;\n}\n\n// Assembles directive details string, useful for error messages.\nfunction imgDirectiveDetails(ngSrc, includeNgSrc = true) {\n    const ngSrcInfo = includeNgSrc ? `(activated on an <img> element with the \\`ngSrc=\"${ngSrc}\"\\`) ` : '';\n    return `The NgOptimizedImage directive ${ngSrcInfo}has detected that`;\n}\n\n/**\n * Asserts that the application is in development mode. Throws an error if the application is in\n * production mode. This assert can be used to make sure that there is no dev-mode code invoked in\n * the prod mode accidentally.\n */\nfunction assertDevMode(checkName) {\n    if (!ngDevMode) {\n        throw new ɵRuntimeError(2958 /* RuntimeErrorCode.UNEXPECTED_DEV_MODE_CHECK_IN_PROD_MODE */, `Unexpected invocation of the ${checkName} in the prod mode. ` +\n            `Please make sure that the prod mode is enabled for production builds.`);\n    }\n}\n\n/**\n * Observer that detects whether an image with `NgOptimizedImage`\n * is treated as a Largest Contentful Paint (LCP) element. If so,\n * asserts that the image has the `priority` attribute.\n *\n * Note: this is a dev-mode only class and it does not appear in prod bundles,\n * thus there is no `ngDevMode` use in the code.\n *\n * Based on https://web.dev/lcp/#measure-lcp-in-javascript.\n */\nclass LCPImageObserver {\n    constructor() {\n        // Map of full image URLs -> original `ngSrc` values.\n        this.images = new Map();\n        // Keep track of images for which `console.warn` was produced.\n        this.alreadyWarned = new Set();\n        this.window = null;\n        this.observer = null;\n        assertDevMode('LCP checker');\n        const win = inject(DOCUMENT).defaultView;\n        if (typeof win !== 'undefined' && typeof PerformanceObserver !== 'undefined') {\n            this.window = win;\n            this.observer = this.initPerformanceObserver();\n        }\n    }\n    /**\n     * Inits PerformanceObserver and subscribes to LCP events.\n     * Based on https://web.dev/lcp/#measure-lcp-in-javascript\n     */\n    initPerformanceObserver() {\n        const observer = new PerformanceObserver((entryList) => {\n            const entries = entryList.getEntries();\n            if (entries.length === 0)\n                return;\n            // We use the latest entry produced by the `PerformanceObserver` as the best\n            // signal on which element is actually an LCP one. As an example, the first image to load on\n            // a page, by virtue of being the only thing on the page so far, is often a LCP candidate\n            // and gets reported by PerformanceObserver, but isn't necessarily the LCP element.\n            const lcpElement = entries[entries.length - 1];\n            // Cast to `any` due to missing `element` on the `LargestContentfulPaint` type of entry.\n            // See https://developer.mozilla.org/en-US/docs/Web/API/LargestContentfulPaint\n            const imgSrc = lcpElement.element?.src ?? '';\n            // Exclude `data:` and `blob:` URLs, since they are not supported by the directive.\n            if (imgSrc.startsWith('data:') || imgSrc.startsWith('blob:'))\n                return;\n            const imgNgSrc = this.images.get(imgSrc);\n            if (imgNgSrc && !this.alreadyWarned.has(imgSrc)) {\n                this.alreadyWarned.add(imgSrc);\n                logMissingPriorityWarning(imgSrc);\n            }\n        });\n        observer.observe({ type: 'largest-contentful-paint', buffered: true });\n        return observer;\n    }\n    registerImage(rewrittenSrc, originalNgSrc) {\n        if (!this.observer)\n            return;\n        this.images.set(getUrl(rewrittenSrc, this.window).href, originalNgSrc);\n    }\n    unregisterImage(rewrittenSrc) {\n        if (!this.observer)\n            return;\n        this.images.delete(getUrl(rewrittenSrc, this.window).href);\n    }\n    ngOnDestroy() {\n        if (!this.observer)\n            return;\n        this.observer.disconnect();\n        this.images.clear();\n        this.alreadyWarned.clear();\n    }\n}\nLCPImageObserver.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: LCPImageObserver, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nLCPImageObserver.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: LCPImageObserver, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: LCPImageObserver, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return []; } });\nfunction logMissingPriorityWarning(ngSrc) {\n    const directiveDetails = imgDirectiveDetails(ngSrc);\n    console.warn(ɵformatRuntimeError(2955 /* RuntimeErrorCode.LCP_IMG_MISSING_PRIORITY */, `${directiveDetails} this image is the Largest Contentful Paint (LCP) ` +\n        `element but was not marked \"priority\". This image should be marked ` +\n        `\"priority\" in order to prioritize its loading. ` +\n        `To fix this, add the \"priority\" attribute.`));\n}\n\n// Set of origins that are always excluded from the preconnect checks.\nconst INTERNAL_PRECONNECT_CHECK_BLOCKLIST = new Set(['localhost', '127.0.0.1', '0.0.0.0']);\n/**\n * Injection token to configure which origins should be excluded\n * from the preconnect checks. It can either be a single string or an array of strings\n * to represent a group of origins, for example:\n *\n * ```typescript\n *  {provide: PRECONNECT_CHECK_BLOCKLIST, useValue: 'https://your-domain.com'}\n * ```\n *\n * or:\n *\n * ```typescript\n *  {provide: PRECONNECT_CHECK_BLOCKLIST,\n *   useValue: ['https://your-domain-1.com', 'https://your-domain-2.com']}\n * ```\n *\n * @publicApi\n */\nconst PRECONNECT_CHECK_BLOCKLIST = new InjectionToken('PRECONNECT_CHECK_BLOCKLIST');\n/**\n * Contains the logic to detect whether an image, marked with the \"priority\" attribute\n * has a corresponding `<link rel=\"preconnect\">` tag in the `document.head`.\n *\n * Note: this is a dev-mode only class, which should not appear in prod bundles,\n * thus there is no `ngDevMode` use in the code.\n */\nclass PreconnectLinkChecker {\n    constructor() {\n        this.document = inject(DOCUMENT);\n        /**\n         * Set of <link rel=\"preconnect\"> tags found on this page.\n         * The `null` value indicates that there was no DOM query operation performed.\n         */\n        this.preconnectLinks = null;\n        /*\n         * Keep track of all already seen origin URLs to avoid repeating the same check.\n         */\n        this.alreadySeen = new Set();\n        this.window = null;\n        this.blocklist = new Set(INTERNAL_PRECONNECT_CHECK_BLOCKLIST);\n        assertDevMode('preconnect link checker');\n        const win = this.document.defaultView;\n        if (typeof win !== 'undefined') {\n            this.window = win;\n        }\n        const blocklist = inject(PRECONNECT_CHECK_BLOCKLIST, { optional: true });\n        if (blocklist) {\n            this.populateBlocklist(blocklist);\n        }\n    }\n    populateBlocklist(origins) {\n        if (Array.isArray(origins)) {\n            deepForEach(origins, origin => {\n                this.blocklist.add(extractHostname(origin));\n            });\n        }\n        else {\n            this.blocklist.add(extractHostname(origins));\n        }\n    }\n    /**\n     * Checks that a preconnect resource hint exists in the head for the\n     * given src.\n     *\n     * @param rewrittenSrc src formatted with loader\n     * @param originalNgSrc ngSrc value\n     */\n    assertPreconnect(rewrittenSrc, originalNgSrc) {\n        if (!this.window)\n            return;\n        const imgUrl = getUrl(rewrittenSrc, this.window);\n        if (this.blocklist.has(imgUrl.hostname) || this.alreadySeen.has(imgUrl.origin))\n            return;\n        // Register this origin as seen, so we don't check it again later.\n        this.alreadySeen.add(imgUrl.origin);\n        if (!this.preconnectLinks) {\n            // Note: we query for preconnect links only *once* and cache the results\n            // for the entire lifespan of an application, since it's unlikely that the\n            // list would change frequently. This allows to make sure there are no\n            // performance implications of making extra DOM lookups for each image.\n            this.preconnectLinks = this.queryPreconnectLinks();\n        }\n        if (!this.preconnectLinks.has(imgUrl.origin)) {\n            console.warn(ɵformatRuntimeError(2956 /* RuntimeErrorCode.PRIORITY_IMG_MISSING_PRECONNECT_TAG */, `${imgDirectiveDetails(originalNgSrc)} there is no preconnect tag present for this ` +\n                `image. Preconnecting to the origin(s) that serve priority images ensures that these ` +\n                `images are delivered as soon as possible. To fix this, please add the following ` +\n                `element into the <head> of the document:\\n` +\n                `  <link rel=\"preconnect\" href=\"${imgUrl.origin}\">`));\n        }\n    }\n    queryPreconnectLinks() {\n        const preconnectUrls = new Set();\n        const selector = 'link[rel=preconnect]';\n        const links = Array.from(this.document.querySelectorAll(selector));\n        for (let link of links) {\n            const url = getUrl(link.href, this.window);\n            preconnectUrls.add(url.origin);\n        }\n        return preconnectUrls;\n    }\n    ngOnDestroy() {\n        this.preconnectLinks?.clear();\n        this.alreadySeen.clear();\n    }\n}\nPreconnectLinkChecker.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PreconnectLinkChecker, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nPreconnectLinkChecker.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PreconnectLinkChecker, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PreconnectLinkChecker, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return []; } });\n/**\n * Invokes a callback for each element in the array. Also invokes a callback\n * recursively for each nested array.\n */\nfunction deepForEach(input, fn) {\n    for (let value of input) {\n        Array.isArray(value) ? deepForEach(value, fn) : fn(value);\n    }\n}\n\n/**\n * In SSR scenarios, a preload `<link>` element is generated for priority images.\n * Having a large number of preload tags may negatively affect the performance,\n * so we warn developers (by throwing an error) if the number of preloaded images\n * is above a certain threshold. This const specifies this threshold.\n */\nconst DEFAULT_PRELOADED_IMAGES_LIMIT = 5;\n/**\n * Helps to keep track of priority images that already have a corresponding\n * preload tag (to avoid generating multiple preload tags with the same URL).\n *\n * This Set tracks the original src passed into the `ngSrc` input not the src after it has been\n * run through the specified `IMAGE_LOADER`.\n */\nconst PRELOADED_IMAGES = new InjectionToken('NG_OPTIMIZED_PRELOADED_IMAGES', { providedIn: 'root', factory: () => new Set() });\n\n/**\n * @description Contains the logic needed to track and add preload link tags to the `<head>` tag. It\n * will also track what images have already had preload link tags added so as to not duplicate link\n * tags.\n *\n * In dev mode this service will validate that the number of preloaded images does not exceed the\n * configured default preloaded images limit: {@link DEFAULT_PRELOADED_IMAGES_LIMIT}.\n */\nclass PreloadLinkCreator {\n    constructor() {\n        this.preloadedImages = inject(PRELOADED_IMAGES);\n        this.document = inject(DOCUMENT);\n    }\n    /**\n     * @description Add a preload `<link>` to the `<head>` of the `index.html` that is served from the\n     * server while using Angular Universal and SSR to kick off image loads for high priority images.\n     *\n     * The `sizes` (passed in from the user) and `srcset` (parsed and formatted from `ngSrcset`)\n     * properties used to set the corresponding attributes, `imagesizes` and `imagesrcset`\n     * respectively, on the preload `<link>` tag so that the correctly sized image is preloaded from\n     * the CDN.\n     *\n     * {@link https://web.dev/preload-responsive-images/#imagesrcset-and-imagesizes}\n     *\n     * @param renderer The `Renderer2` passed in from the directive\n     * @param src The original src of the image that is set on the `ngSrc` input.\n     * @param srcset The parsed and formatted srcset created from the `ngSrcset` input\n     * @param sizes The value of the `sizes` attribute passed in to the `<img>` tag\n     */\n    createPreloadLinkTag(renderer, src, srcset, sizes) {\n        if (ngDevMode) {\n            if (this.preloadedImages.size >= DEFAULT_PRELOADED_IMAGES_LIMIT) {\n                throw new ɵRuntimeError(2961 /* RuntimeErrorCode.TOO_MANY_PRELOADED_IMAGES */, ngDevMode &&\n                    `The \\`NgOptimizedImage\\` directive has detected that more than ` +\n                        `${DEFAULT_PRELOADED_IMAGES_LIMIT} images were marked as priority. ` +\n                        `This might negatively affect an overall performance of the page. ` +\n                        `To fix this, remove the \"priority\" attribute from images with less priority.`);\n            }\n        }\n        if (this.preloadedImages.has(src)) {\n            return;\n        }\n        this.preloadedImages.add(src);\n        const preload = renderer.createElement('link');\n        renderer.setAttribute(preload, 'as', 'image');\n        renderer.setAttribute(preload, 'href', src);\n        renderer.setAttribute(preload, 'rel', 'preload');\n        renderer.setAttribute(preload, 'fetchpriority', 'high');\n        if (sizes) {\n            renderer.setAttribute(preload, 'imageSizes', sizes);\n        }\n        if (srcset) {\n            renderer.setAttribute(preload, 'imageSrcset', srcset);\n        }\n        renderer.appendChild(this.document.head, preload);\n    }\n}\nPreloadLinkCreator.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PreloadLinkCreator, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nPreloadLinkCreator.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PreloadLinkCreator, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PreloadLinkCreator, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }] });\n\n/**\n * When a Base64-encoded image is passed as an input to the `NgOptimizedImage` directive,\n * an error is thrown. The image content (as a string) might be very long, thus making\n * it hard to read an error message if the entire string is included. This const defines\n * the number of characters that should be included into the error message. The rest\n * of the content is truncated.\n */\nconst BASE64_IMG_MAX_LENGTH_IN_ERROR = 50;\n/**\n * RegExpr to determine whether a src in a srcset is using width descriptors.\n * Should match something like: \"100w, 200w\".\n */\nconst VALID_WIDTH_DESCRIPTOR_SRCSET = /^((\\s*\\d+w\\s*(,|$)){1,})$/;\n/**\n * RegExpr to determine whether a src in a srcset is using density descriptors.\n * Should match something like: \"1x, 2x, 50x\". Also supports decimals like \"1.5x, 1.50x\".\n */\nconst VALID_DENSITY_DESCRIPTOR_SRCSET = /^((\\s*\\d+(\\.\\d+)?x\\s*(,|$)){1,})$/;\n/**\n * Srcset values with a density descriptor higher than this value will actively\n * throw an error. Such densities are not permitted as they cause image sizes\n * to be unreasonably large and slow down LCP.\n */\nconst ABSOLUTE_SRCSET_DENSITY_CAP = 3;\n/**\n * Used only in error message text to communicate best practices, as we will\n * only throw based on the slightly more conservative ABSOLUTE_SRCSET_DENSITY_CAP.\n */\nconst RECOMMENDED_SRCSET_DENSITY_CAP = 2;\n/**\n * Used in generating automatic density-based srcsets\n */\nconst DENSITY_SRCSET_MULTIPLIERS = [1, 2];\n/**\n * Used to determine which breakpoints to use on full-width images\n */\nconst VIEWPORT_BREAKPOINT_CUTOFF = 640;\n/**\n * Used to determine whether two aspect ratios are similar in value.\n */\nconst ASPECT_RATIO_TOLERANCE = .1;\n/**\n * Used to determine whether the image has been requested at an overly\n * large size compared to the actual rendered image size (after taking\n * into account a typical device pixel ratio). In pixels.\n */\nconst OVERSIZED_IMAGE_TOLERANCE = 1000;\n/**\n * Used to limit automatic srcset generation of very large sources for\n * fixed-size images. In pixels.\n */\nconst FIXED_SRCSET_WIDTH_LIMIT = 1920;\nconst FIXED_SRCSET_HEIGHT_LIMIT = 1080;\n/** Info about built-in loaders we can test for. */\nconst BUILT_IN_LOADERS = [imgixLoaderInfo, imageKitLoaderInfo, cloudinaryLoaderInfo];\nconst defaultConfig = {\n    breakpoints: [16, 32, 48, 64, 96, 128, 256, 384, 640, 750, 828, 1080, 1200, 1920, 2048, 3840],\n};\n/**\n * Injection token that configures the image optimized image functionality.\n *\n * @see `NgOptimizedImage`\n * @publicApi\n * @developerPreview\n */\nconst IMAGE_CONFIG = new InjectionToken('ImageConfig', { providedIn: 'root', factory: () => defaultConfig });\n/**\n * Directive that improves image loading performance by enforcing best practices.\n *\n * `NgOptimizedImage` ensures that the loading of the Largest Contentful Paint (LCP) image is\n * prioritized by:\n * - Automatically setting the `fetchpriority` attribute on the `<img>` tag\n * - Lazy loading non-priority images by default\n * - Asserting that there is a corresponding preconnect link tag in the document head\n *\n * In addition, the directive:\n * - Generates appropriate asset URLs if a corresponding `ImageLoader` function is provided\n * - Automatically generates a srcset\n * - Requires that `width` and `height` are set\n * - Warns if `width` or `height` have been set incorrectly\n * - Warns if the image will be visually distorted when rendered\n *\n * @usageNotes\n * The `NgOptimizedImage` directive is marked as [standalone](guide/standalone-components) and can\n * be imported directly.\n *\n * Follow the steps below to enable and use the directive:\n * 1. Import it into the necessary NgModule or a standalone Component.\n * 2. Optionally provide an `ImageLoader` if you use an image hosting service.\n * 3. Update the necessary `<img>` tags in templates and replace `src` attributes with `ngSrc`.\n * Using a `ngSrc` allows the directive to control when the `src` gets set, which triggers an image\n * download.\n *\n * Step 1: import the `NgOptimizedImage` directive.\n *\n * ```typescript\n * import { NgOptimizedImage } from '@angular/common';\n *\n * // Include it into the necessary NgModule\n * @NgModule({\n *   imports: [NgOptimizedImage],\n * })\n * class AppModule {}\n *\n * // ... or a standalone Component\n * @Component({\n *   standalone: true\n *   imports: [NgOptimizedImage],\n * })\n * class MyStandaloneComponent {}\n * ```\n *\n * Step 2: configure a loader.\n *\n * To use the **default loader**: no additional code changes are necessary. The URL returned by the\n * generic loader will always match the value of \"src\". In other words, this loader applies no\n * transformations to the resource URL and the value of the `ngSrc` attribute will be used as is.\n *\n * To use an existing loader for a **third-party image service**: add the provider factory for your\n * chosen service to the `providers` array. In the example below, the Imgix loader is used:\n *\n * ```typescript\n * import {provideImgixLoader} from '@angular/common';\n *\n * // Call the function and add the result to the `providers` array:\n * providers: [\n *   provideImgixLoader(\"https://my.base.url/\"),\n * ],\n * ```\n *\n * The `NgOptimizedImage` directive provides the following functions:\n * - `provideCloudflareLoader`\n * - `provideCloudinaryLoader`\n * - `provideImageKitLoader`\n * - `provideImgixLoader`\n *\n * If you use a different image provider, you can create a custom loader function as described\n * below.\n *\n * To use a **custom loader**: provide your loader function as a value for the `IMAGE_LOADER` DI\n * token.\n *\n * ```typescript\n * import {IMAGE_LOADER, ImageLoaderConfig} from '@angular/common';\n *\n * // Configure the loader using the `IMAGE_LOADER` token.\n * providers: [\n *   {\n *      provide: IMAGE_LOADER,\n *      useValue: (config: ImageLoaderConfig) => {\n *        return `https://example.com/${config.src}-${config.width}.jpg}`;\n *      }\n *   },\n * ],\n * ```\n *\n * Step 3: update `<img>` tags in templates to use `ngSrc` instead of `src`.\n *\n * ```\n * <img ngSrc=\"logo.png\" width=\"200\" height=\"100\">\n * ```\n *\n * @publicApi\n */\nclass NgOptimizedImage {\n    constructor() {\n        this.imageLoader = inject(IMAGE_LOADER);\n        this.config = processConfig(inject(IMAGE_CONFIG));\n        this.renderer = inject(Renderer2);\n        this.imgElement = inject(ElementRef).nativeElement;\n        this.injector = inject(Injector);\n        this.isServer = isPlatformServer(inject(PLATFORM_ID));\n        this.preloadLinkChecker = inject(PreloadLinkCreator);\n        // a LCP image observer - should be injected only in the dev mode\n        this.lcpObserver = ngDevMode ? this.injector.get(LCPImageObserver) : null;\n        /**\n         * Calculate the rewritten `src` once and store it.\n         * This is needed to avoid repetitive calculations and make sure the directive cleanup in the\n         * `ngOnDestroy` does not rely on the `IMAGE_LOADER` logic (which in turn can rely on some other\n         * instance that might be already destroyed).\n         */\n        this._renderedSrc = null;\n        this._priority = false;\n        this._disableOptimizedSrcset = false;\n        this._fill = false;\n    }\n    /**\n     * For responsive images: the intrinsic width of the image in pixels.\n     * For fixed size images: the desired rendered width of the image in pixels.\n     */\n    set width(value) {\n        ngDevMode && assertGreaterThanZero(this, value, 'width');\n        this._width = inputToInteger(value);\n    }\n    get width() {\n        return this._width;\n    }\n    /**\n     * For responsive images: the intrinsic height of the image in pixels.\n     * For fixed size images: the desired rendered height of the image in pixels.* The intrinsic\n     * height of the image in pixels.\n     */\n    set height(value) {\n        ngDevMode && assertGreaterThanZero(this, value, 'height');\n        this._height = inputToInteger(value);\n    }\n    get height() {\n        return this._height;\n    }\n    /**\n     * Indicates whether this image should have a high priority.\n     */\n    set priority(value) {\n        this._priority = inputToBoolean(value);\n    }\n    get priority() {\n        return this._priority;\n    }\n    /**\n     * Disables automatic srcset generation for this image.\n     */\n    set disableOptimizedSrcset(value) {\n        this._disableOptimizedSrcset = inputToBoolean(value);\n    }\n    get disableOptimizedSrcset() {\n        return this._disableOptimizedSrcset;\n    }\n    /**\n     * Sets the image to \"fill mode\", which eliminates the height/width requirement and adds\n     * styles such that the image fills its containing element.\n     *\n     * @developerPreview\n     */\n    set fill(value) {\n        this._fill = inputToBoolean(value);\n    }\n    get fill() {\n        return this._fill;\n    }\n    /** @nodoc */\n    ngOnInit() {\n        if (ngDevMode) {\n            assertNonEmptyInput(this, 'ngSrc', this.ngSrc);\n            assertValidNgSrcset(this, this.ngSrcset);\n            assertNoConflictingSrc(this);\n            if (this.ngSrcset) {\n                assertNoConflictingSrcset(this);\n            }\n            assertNotBase64Image(this);\n            assertNotBlobUrl(this);\n            if (this.fill) {\n                assertEmptyWidthAndHeight(this);\n                assertNonZeroRenderedHeight(this, this.imgElement, this.renderer);\n            }\n            else {\n                assertNonEmptyWidthAndHeight(this);\n                // Only check for distorted images when not in fill mode, where\n                // images may be intentionally stretched, cropped or letterboxed.\n                assertNoImageDistortion(this, this.imgElement, this.renderer);\n            }\n            assertValidLoadingInput(this);\n            if (!this.ngSrcset) {\n                assertNoComplexSizes(this);\n            }\n            assertNotMissingBuiltInLoader(this.ngSrc, this.imageLoader);\n            assertNoNgSrcsetWithoutLoader(this, this.imageLoader);\n            assertNoLoaderParamsWithoutLoader(this, this.imageLoader);\n            if (this.priority) {\n                const checker = this.injector.get(PreconnectLinkChecker);\n                checker.assertPreconnect(this.getRewrittenSrc(), this.ngSrc);\n            }\n            else {\n                // Monitor whether an image is an LCP element only in case\n                // the `priority` attribute is missing. Otherwise, an image\n                // has the necessary settings and no extra checks are required.\n                if (this.lcpObserver !== null) {\n                    const ngZone = this.injector.get(NgZone);\n                    ngZone.runOutsideAngular(() => {\n                        this.lcpObserver.registerImage(this.getRewrittenSrc(), this.ngSrc);\n                    });\n                }\n            }\n        }\n        this.setHostAttributes();\n    }\n    setHostAttributes() {\n        // Must set width/height explicitly in case they are bound (in which case they will\n        // only be reflected and not found by the browser)\n        if (this.fill) {\n            if (!this.sizes) {\n                this.sizes = '100vw';\n            }\n        }\n        else {\n            this.setHostAttribute('width', this.width.toString());\n            this.setHostAttribute('height', this.height.toString());\n        }\n        this.setHostAttribute('loading', this.getLoadingBehavior());\n        this.setHostAttribute('fetchpriority', this.getFetchPriority());\n        // The `data-ng-img` attribute flags an image as using the directive, to allow\n        // for analysis of the directive's performance.\n        this.setHostAttribute('ng-img', 'true');\n        // The `src` and `srcset` attributes should be set last since other attributes\n        // could affect the image's loading behavior.\n        const rewrittenSrc = this.getRewrittenSrc();\n        this.setHostAttribute('src', rewrittenSrc);\n        let rewrittenSrcset = undefined;\n        if (this.sizes) {\n            this.setHostAttribute('sizes', this.sizes);\n        }\n        if (this.ngSrcset) {\n            rewrittenSrcset = this.getRewrittenSrcset();\n        }\n        else if (this.shouldGenerateAutomaticSrcset()) {\n            rewrittenSrcset = this.getAutomaticSrcset();\n        }\n        if (rewrittenSrcset) {\n            this.setHostAttribute('srcset', rewrittenSrcset);\n        }\n        if (this.isServer && this.priority) {\n            this.preloadLinkChecker.createPreloadLinkTag(this.renderer, rewrittenSrc, rewrittenSrcset, this.sizes);\n        }\n    }\n    /** @nodoc */\n    ngOnChanges(changes) {\n        if (ngDevMode) {\n            assertNoPostInitInputChange(this, changes, [\n                'ngSrc',\n                'ngSrcset',\n                'width',\n                'height',\n                'priority',\n                'fill',\n                'loading',\n                'sizes',\n                'loaderParams',\n                'disableOptimizedSrcset',\n            ]);\n        }\n    }\n    callImageLoader(configWithoutCustomParams) {\n        let augmentedConfig = configWithoutCustomParams;\n        if (this.loaderParams) {\n            augmentedConfig.loaderParams = this.loaderParams;\n        }\n        return this.imageLoader(augmentedConfig);\n    }\n    getLoadingBehavior() {\n        if (!this.priority && this.loading !== undefined) {\n            return this.loading;\n        }\n        return this.priority ? 'eager' : 'lazy';\n    }\n    getFetchPriority() {\n        return this.priority ? 'high' : 'auto';\n    }\n    getRewrittenSrc() {\n        // ImageLoaderConfig supports setting a width property. However, we're not setting width here\n        // because if the developer uses rendered width instead of intrinsic width in the HTML width\n        // attribute, the image requested may be too small for 2x+ screens.\n        if (!this._renderedSrc) {\n            const imgConfig = { src: this.ngSrc };\n            // Cache calculated image src to reuse it later in the code.\n            this._renderedSrc = this.callImageLoader(imgConfig);\n        }\n        return this._renderedSrc;\n    }\n    getRewrittenSrcset() {\n        const widthSrcSet = VALID_WIDTH_DESCRIPTOR_SRCSET.test(this.ngSrcset);\n        const finalSrcs = this.ngSrcset.split(',').filter(src => src !== '').map(srcStr => {\n            srcStr = srcStr.trim();\n            const width = widthSrcSet ? parseFloat(srcStr) : parseFloat(srcStr) * this.width;\n            return `${this.callImageLoader({ src: this.ngSrc, width })} ${srcStr}`;\n        });\n        return finalSrcs.join(', ');\n    }\n    getAutomaticSrcset() {\n        if (this.sizes) {\n            return this.getResponsiveSrcset();\n        }\n        else {\n            return this.getFixedSrcset();\n        }\n    }\n    getResponsiveSrcset() {\n        const { breakpoints } = this.config;\n        let filteredBreakpoints = breakpoints;\n        if (this.sizes?.trim() === '100vw') {\n            // Since this is a full-screen-width image, our srcset only needs to include\n            // breakpoints with full viewport widths.\n            filteredBreakpoints = breakpoints.filter(bp => bp >= VIEWPORT_BREAKPOINT_CUTOFF);\n        }\n        const finalSrcs = filteredBreakpoints.map(bp => `${this.callImageLoader({ src: this.ngSrc, width: bp })} ${bp}w`);\n        return finalSrcs.join(', ');\n    }\n    getFixedSrcset() {\n        const finalSrcs = DENSITY_SRCSET_MULTIPLIERS.map(multiplier => `${this.callImageLoader({\n            src: this.ngSrc,\n            width: this.width * multiplier\n        })} ${multiplier}x`);\n        return finalSrcs.join(', ');\n    }\n    shouldGenerateAutomaticSrcset() {\n        return !this._disableOptimizedSrcset && !this.srcset && this.imageLoader !== noopImageLoader &&\n            !(this.width > FIXED_SRCSET_WIDTH_LIMIT || this.height > FIXED_SRCSET_HEIGHT_LIMIT);\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        if (ngDevMode) {\n            if (!this.priority && this._renderedSrc !== null && this.lcpObserver !== null) {\n                this.lcpObserver.unregisterImage(this._renderedSrc);\n            }\n        }\n    }\n    setHostAttribute(name, value) {\n        this.renderer.setAttribute(this.imgElement, name, value);\n    }\n}\nNgOptimizedImage.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgOptimizedImage, deps: [], target: i0.ɵɵFactoryTarget.Directive });\nNgOptimizedImage.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgOptimizedImage, isStandalone: true, selector: \"img[ngSrc]\", inputs: { ngSrc: \"ngSrc\", ngSrcset: \"ngSrcset\", sizes: \"sizes\", width: \"width\", height: \"height\", loading: \"loading\", priority: \"priority\", loaderParams: \"loaderParams\", disableOptimizedSrcset: \"disableOptimizedSrcset\", fill: \"fill\", src: \"src\", srcset: \"srcset\" }, host: { properties: { \"style.position\": \"fill ? \\\"absolute\\\" : null\", \"style.width\": \"fill ? \\\"100%\\\" : null\", \"style.height\": \"fill ? \\\"100%\\\" : null\", \"style.inset\": \"fill ? \\\"0px\\\" : null\" } }, usesOnChanges: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgOptimizedImage, decorators: [{\n            type: Directive,\n            args: [{\n                    standalone: true,\n                    selector: 'img[ngSrc]',\n                    host: {\n                        '[style.position]': 'fill ? \"absolute\" : null',\n                        '[style.width]': 'fill ? \"100%\" : null',\n                        '[style.height]': 'fill ? \"100%\" : null',\n                        '[style.inset]': 'fill ? \"0px\" : null'\n                    }\n                }]\n        }], propDecorators: { ngSrc: [{\n                type: Input\n            }], ngSrcset: [{\n                type: Input\n            }], sizes: [{\n                type: Input\n            }], width: [{\n                type: Input\n            }], height: [{\n                type: Input\n            }], loading: [{\n                type: Input\n            }], priority: [{\n                type: Input\n            }], loaderParams: [{\n                type: Input\n            }], disableOptimizedSrcset: [{\n                type: Input\n            }], fill: [{\n                type: Input\n            }], src: [{\n                type: Input\n            }], srcset: [{\n                type: Input\n            }] } });\n/***** Helpers *****/\n/**\n * Convert input value to integer.\n */\nfunction inputToInteger(value) {\n    return typeof value === 'string' ? parseInt(value, 10) : value;\n}\n/**\n * Convert input value to boolean.\n */\nfunction inputToBoolean(value) {\n    return value != null && `${value}` !== 'false';\n}\n/**\n * Sorts provided config breakpoints and uses defaults.\n */\nfunction processConfig(config) {\n    let sortedBreakpoints = {};\n    if (config.breakpoints) {\n        sortedBreakpoints.breakpoints = config.breakpoints.sort((a, b) => a - b);\n    }\n    return Object.assign({}, defaultConfig, config, sortedBreakpoints);\n}\n/***** Assert functions *****/\n/**\n * Verifies that there is no `src` set on a host element.\n */\nfunction assertNoConflictingSrc(dir) {\n    if (dir.src) {\n        throw new ɵRuntimeError(2950 /* RuntimeErrorCode.UNEXPECTED_SRC_ATTR */, `${imgDirectiveDetails(dir.ngSrc)} both \\`src\\` and \\`ngSrc\\` have been set. ` +\n            `Supplying both of these attributes breaks lazy loading. ` +\n            `The NgOptimizedImage directive sets \\`src\\` itself based on the value of \\`ngSrc\\`. ` +\n            `To fix this, please remove the \\`src\\` attribute.`);\n    }\n}\n/**\n * Verifies that there is no `srcset` set on a host element.\n */\nfunction assertNoConflictingSrcset(dir) {\n    if (dir.srcset) {\n        throw new ɵRuntimeError(2951 /* RuntimeErrorCode.UNEXPECTED_SRCSET_ATTR */, `${imgDirectiveDetails(dir.ngSrc)} both \\`srcset\\` and \\`ngSrcset\\` have been set. ` +\n            `Supplying both of these attributes breaks lazy loading. ` +\n            `The NgOptimizedImage directive sets \\`srcset\\` itself based on the value of ` +\n            `\\`ngSrcset\\`. To fix this, please remove the \\`srcset\\` attribute.`);\n    }\n}\n/**\n * Verifies that the `ngSrc` is not a Base64-encoded image.\n */\nfunction assertNotBase64Image(dir) {\n    let ngSrc = dir.ngSrc.trim();\n    if (ngSrc.startsWith('data:')) {\n        if (ngSrc.length > BASE64_IMG_MAX_LENGTH_IN_ERROR) {\n            ngSrc = ngSrc.substring(0, BASE64_IMG_MAX_LENGTH_IN_ERROR) + '...';\n        }\n        throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc, false)} \\`ngSrc\\` is a Base64-encoded string ` +\n            `(${ngSrc}). NgOptimizedImage does not support Base64-encoded strings. ` +\n            `To fix this, disable the NgOptimizedImage directive for this element ` +\n            `by removing \\`ngSrc\\` and using a standard \\`src\\` attribute instead.`);\n    }\n}\n/**\n * Verifies that the 'sizes' only includes responsive values.\n */\nfunction assertNoComplexSizes(dir) {\n    let sizes = dir.sizes;\n    if (sizes?.match(/((\\)|,)\\s|^)\\d+px/)) {\n        throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc, false)} \\`sizes\\` was set to a string including ` +\n            `pixel values. For automatic \\`srcset\\` generation, \\`sizes\\` must only include responsive ` +\n            `values, such as \\`sizes=\"50vw\"\\` or \\`sizes=\"(min-width: 768px) 50vw, 100vw\"\\`. ` +\n            `To fix this, modify the \\`sizes\\` attribute, or provide your own \\`ngSrcset\\` value directly.`);\n    }\n}\n/**\n * Verifies that the `ngSrc` is not a Blob URL.\n */\nfunction assertNotBlobUrl(dir) {\n    const ngSrc = dir.ngSrc.trim();\n    if (ngSrc.startsWith('blob:')) {\n        throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} \\`ngSrc\\` was set to a blob URL (${ngSrc}). ` +\n            `Blob URLs are not supported by the NgOptimizedImage directive. ` +\n            `To fix this, disable the NgOptimizedImage directive for this element ` +\n            `by removing \\`ngSrc\\` and using a regular \\`src\\` attribute instead.`);\n    }\n}\n/**\n * Verifies that the input is set to a non-empty string.\n */\nfunction assertNonEmptyInput(dir, name, value) {\n    const isString = typeof value === 'string';\n    const isEmptyString = isString && value.trim() === '';\n    if (!isString || isEmptyString) {\n        throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} \\`${name}\\` has an invalid value ` +\n            `(\\`${value}\\`). To fix this, change the value to a non-empty string.`);\n    }\n}\n/**\n * Verifies that the `ngSrcset` is in a valid format, e.g. \"100w, 200w\" or \"1x, 2x\".\n */\nfunction assertValidNgSrcset(dir, value) {\n    if (value == null)\n        return;\n    assertNonEmptyInput(dir, 'ngSrcset', value);\n    const stringVal = value;\n    const isValidWidthDescriptor = VALID_WIDTH_DESCRIPTOR_SRCSET.test(stringVal);\n    const isValidDensityDescriptor = VALID_DENSITY_DESCRIPTOR_SRCSET.test(stringVal);\n    if (isValidDensityDescriptor) {\n        assertUnderDensityCap(dir, stringVal);\n    }\n    const isValidSrcset = isValidWidthDescriptor || isValidDensityDescriptor;\n    if (!isValidSrcset) {\n        throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} \\`ngSrcset\\` has an invalid value (\\`${value}\\`). ` +\n            `To fix this, supply \\`ngSrcset\\` using a comma-separated list of one or more width ` +\n            `descriptors (e.g. \"100w, 200w\") or density descriptors (e.g. \"1x, 2x\").`);\n    }\n}\nfunction assertUnderDensityCap(dir, value) {\n    const underDensityCap = value.split(',').every(num => num === '' || parseFloat(num) <= ABSOLUTE_SRCSET_DENSITY_CAP);\n    if (!underDensityCap) {\n        throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} the \\`ngSrcset\\` contains an unsupported image density:` +\n            `\\`${value}\\`. NgOptimizedImage generally recommends a max image density of ` +\n            `${RECOMMENDED_SRCSET_DENSITY_CAP}x but supports image densities up to ` +\n            `${ABSOLUTE_SRCSET_DENSITY_CAP}x. The human eye cannot distinguish between image densities ` +\n            `greater than ${RECOMMENDED_SRCSET_DENSITY_CAP}x - which makes them unnecessary for ` +\n            `most use cases. Images that will be pinch-zoomed are typically the primary use case for ` +\n            `${ABSOLUTE_SRCSET_DENSITY_CAP}x images. Please remove the high density descriptor and try again.`);\n    }\n}\n/**\n * Creates a `RuntimeError` instance to represent a situation when an input is set after\n * the directive has initialized.\n */\nfunction postInitInputChangeError(dir, inputName) {\n    let reason;\n    if (inputName === 'width' || inputName === 'height') {\n        reason = `Changing \\`${inputName}\\` may result in different attribute value ` +\n            `applied to the underlying image element and cause layout shifts on a page.`;\n    }\n    else {\n        reason = `Changing the \\`${inputName}\\` would have no effect on the underlying ` +\n            `image element, because the resource loading has already occurred.`;\n    }\n    return new ɵRuntimeError(2953 /* RuntimeErrorCode.UNEXPECTED_INPUT_CHANGE */, `${imgDirectiveDetails(dir.ngSrc)} \\`${inputName}\\` was updated after initialization. ` +\n        `The NgOptimizedImage directive will not react to this input change. ${reason} ` +\n        `To fix this, either switch \\`${inputName}\\` to a static value ` +\n        `or wrap the image element in an *ngIf that is gated on the necessary value.`);\n}\n/**\n * Verify that none of the listed inputs has changed.\n */\nfunction assertNoPostInitInputChange(dir, changes, inputs) {\n    inputs.forEach(input => {\n        const isUpdated = changes.hasOwnProperty(input);\n        if (isUpdated && !changes[input].isFirstChange()) {\n            if (input === 'ngSrc') {\n                // When the `ngSrc` input changes, we detect that only in the\n                // `ngOnChanges` hook, thus the `ngSrc` is already set. We use\n                // `ngSrc` in the error message, so we use a previous value, but\n                // not the updated one in it.\n                dir = { ngSrc: changes[input].previousValue };\n            }\n            throw postInitInputChangeError(dir, input);\n        }\n    });\n}\n/**\n * Verifies that a specified input is a number greater than 0.\n */\nfunction assertGreaterThanZero(dir, inputValue, inputName) {\n    const validNumber = typeof inputValue === 'number' && inputValue > 0;\n    const validString = typeof inputValue === 'string' && /^\\d+$/.test(inputValue.trim()) && parseInt(inputValue) > 0;\n    if (!validNumber && !validString) {\n        throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} \\`${inputName}\\` has an invalid value ` +\n            `(\\`${inputValue}\\`). To fix this, provide \\`${inputName}\\` ` +\n            `as a number greater than 0.`);\n    }\n}\n/**\n * Verifies that the rendered image is not visually distorted. Effectively this is checking:\n * - Whether the \"width\" and \"height\" attributes reflect the actual dimensions of the image.\n * - Whether image styling is \"correct\" (see below for a longer explanation).\n */\nfunction assertNoImageDistortion(dir, img, renderer) {\n    const removeListenerFn = renderer.listen(img, 'load', () => {\n        removeListenerFn();\n        const computedStyle = window.getComputedStyle(img);\n        let renderedWidth = parseFloat(computedStyle.getPropertyValue('width'));\n        let renderedHeight = parseFloat(computedStyle.getPropertyValue('height'));\n        const boxSizing = computedStyle.getPropertyValue('box-sizing');\n        if (boxSizing === 'border-box') {\n            const paddingTop = computedStyle.getPropertyValue('padding-top');\n            const paddingRight = computedStyle.getPropertyValue('padding-right');\n            const paddingBottom = computedStyle.getPropertyValue('padding-bottom');\n            const paddingLeft = computedStyle.getPropertyValue('padding-left');\n            renderedWidth -= parseFloat(paddingRight) + parseFloat(paddingLeft);\n            renderedHeight -= parseFloat(paddingTop) + parseFloat(paddingBottom);\n        }\n        const renderedAspectRatio = renderedWidth / renderedHeight;\n        const nonZeroRenderedDimensions = renderedWidth !== 0 && renderedHeight !== 0;\n        const intrinsicWidth = img.naturalWidth;\n        const intrinsicHeight = img.naturalHeight;\n        const intrinsicAspectRatio = intrinsicWidth / intrinsicHeight;\n        const suppliedWidth = dir.width;\n        const suppliedHeight = dir.height;\n        const suppliedAspectRatio = suppliedWidth / suppliedHeight;\n        // Tolerance is used to account for the impact of subpixel rendering.\n        // Due to subpixel rendering, the rendered, intrinsic, and supplied\n        // aspect ratios of a correctly configured image may not exactly match.\n        // For example, a `width=4030 height=3020` image might have a rendered\n        // size of \"1062w, 796.48h\". (An aspect ratio of 1.334... vs. 1.333...)\n        const inaccurateDimensions = Math.abs(suppliedAspectRatio - intrinsicAspectRatio) > ASPECT_RATIO_TOLERANCE;\n        const stylingDistortion = nonZeroRenderedDimensions &&\n            Math.abs(intrinsicAspectRatio - renderedAspectRatio) > ASPECT_RATIO_TOLERANCE;\n        if (inaccurateDimensions) {\n            console.warn(ɵformatRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} the aspect ratio of the image does not match ` +\n                `the aspect ratio indicated by the width and height attributes. ` +\n                `\\nIntrinsic image size: ${intrinsicWidth}w x ${intrinsicHeight}h ` +\n                `(aspect-ratio: ${intrinsicAspectRatio}). \\nSupplied width and height attributes: ` +\n                `${suppliedWidth}w x ${suppliedHeight}h (aspect-ratio: ${suppliedAspectRatio}). ` +\n                `\\nTo fix this, update the width and height attributes.`));\n        }\n        else if (stylingDistortion) {\n            console.warn(ɵformatRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} the aspect ratio of the rendered image ` +\n                `does not match the image's intrinsic aspect ratio. ` +\n                `\\nIntrinsic image size: ${intrinsicWidth}w x ${intrinsicHeight}h ` +\n                `(aspect-ratio: ${intrinsicAspectRatio}). \\nRendered image size: ` +\n                `${renderedWidth}w x ${renderedHeight}h (aspect-ratio: ` +\n                `${renderedAspectRatio}). \\nThis issue can occur if \"width\" and \"height\" ` +\n                `attributes are added to an image without updating the corresponding ` +\n                `image styling. To fix this, adjust image styling. In most cases, ` +\n                `adding \"height: auto\" or \"width: auto\" to the image styling will fix ` +\n                `this issue.`));\n        }\n        else if (!dir.ngSrcset && nonZeroRenderedDimensions) {\n            // If `ngSrcset` hasn't been set, sanity check the intrinsic size.\n            const recommendedWidth = RECOMMENDED_SRCSET_DENSITY_CAP * renderedWidth;\n            const recommendedHeight = RECOMMENDED_SRCSET_DENSITY_CAP * renderedHeight;\n            const oversizedWidth = (intrinsicWidth - recommendedWidth) >= OVERSIZED_IMAGE_TOLERANCE;\n            const oversizedHeight = (intrinsicHeight - recommendedHeight) >= OVERSIZED_IMAGE_TOLERANCE;\n            if (oversizedWidth || oversizedHeight) {\n                console.warn(ɵformatRuntimeError(2960 /* RuntimeErrorCode.OVERSIZED_IMAGE */, `${imgDirectiveDetails(dir.ngSrc)} the intrinsic image is significantly ` +\n                    `larger than necessary. ` +\n                    `\\nRendered image size: ${renderedWidth}w x ${renderedHeight}h. ` +\n                    `\\nIntrinsic image size: ${intrinsicWidth}w x ${intrinsicHeight}h. ` +\n                    `\\nRecommended intrinsic image size: ${recommendedWidth}w x ${recommendedHeight}h. ` +\n                    `\\nNote: Recommended intrinsic image size is calculated assuming a maximum DPR of ` +\n                    `${RECOMMENDED_SRCSET_DENSITY_CAP}. To improve loading time, resize the image ` +\n                    `or consider using the \"ngSrcset\" and \"sizes\" attributes.`));\n            }\n        }\n    });\n}\n/**\n * Verifies that a specified input is set.\n */\nfunction assertNonEmptyWidthAndHeight(dir) {\n    let missingAttributes = [];\n    if (dir.width === undefined)\n        missingAttributes.push('width');\n    if (dir.height === undefined)\n        missingAttributes.push('height');\n    if (missingAttributes.length > 0) {\n        throw new ɵRuntimeError(2954 /* RuntimeErrorCode.REQUIRED_INPUT_MISSING */, `${imgDirectiveDetails(dir.ngSrc)} these required attributes ` +\n            `are missing: ${missingAttributes.map(attr => `\"${attr}\"`).join(', ')}. ` +\n            `Including \"width\" and \"height\" attributes will prevent image-related layout shifts. ` +\n            `To fix this, include \"width\" and \"height\" attributes on the image tag or turn on ` +\n            `\"fill\" mode with the \\`fill\\` attribute.`);\n    }\n}\n/**\n * Verifies that width and height are not set. Used in fill mode, where those attributes don't make\n * sense.\n */\nfunction assertEmptyWidthAndHeight(dir) {\n    if (dir.width || dir.height) {\n        throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} the attributes \\`height\\` and/or \\`width\\` are present ` +\n            `along with the \\`fill\\` attribute. Because \\`fill\\` mode causes an image to fill its containing ` +\n            `element, the size attributes have no effect and should be removed.`);\n    }\n}\n/**\n * Verifies that the rendered image has a nonzero height. If the image is in fill mode, provides\n * guidance that this can be caused by the containing element's CSS position property.\n */\nfunction assertNonZeroRenderedHeight(dir, img, renderer) {\n    const removeListenerFn = renderer.listen(img, 'load', () => {\n        removeListenerFn();\n        const renderedHeight = img.clientHeight;\n        if (dir.fill && renderedHeight === 0) {\n            console.warn(ɵformatRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} the height of the fill-mode image is zero. ` +\n                `This is likely because the containing element does not have the CSS 'position' ` +\n                `property set to one of the following: \"relative\", \"fixed\", or \"absolute\". ` +\n                `To fix this problem, make sure the container element has the CSS 'position' ` +\n                `property defined and the height of the element is not zero.`));\n        }\n    });\n}\n/**\n * Verifies that the `loading` attribute is set to a valid input &\n * is not used on priority images.\n */\nfunction assertValidLoadingInput(dir) {\n    if (dir.loading && dir.priority) {\n        throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} the \\`loading\\` attribute ` +\n            `was used on an image that was marked \"priority\". ` +\n            `Setting \\`loading\\` on priority images is not allowed ` +\n            `because these images will always be eagerly loaded. ` +\n            `To fix this, remove the “loading” attribute from the priority image.`);\n    }\n    const validInputs = ['auto', 'eager', 'lazy'];\n    if (typeof dir.loading === 'string' && !validInputs.includes(dir.loading)) {\n        throw new ɵRuntimeError(2952 /* RuntimeErrorCode.INVALID_INPUT */, `${imgDirectiveDetails(dir.ngSrc)} the \\`loading\\` attribute ` +\n            `has an invalid value (\\`${dir.loading}\\`). ` +\n            `To fix this, provide a valid value (\"lazy\", \"eager\", or \"auto\").`);\n    }\n}\n/**\n * Warns if NOT using a loader (falling back to the generic loader) and\n * the image appears to be hosted on one of the image CDNs for which\n * we do have a built-in image loader. Suggests switching to the\n * built-in loader.\n *\n * @param ngSrc Value of the ngSrc attribute\n * @param imageLoader ImageLoader provided\n */\nfunction assertNotMissingBuiltInLoader(ngSrc, imageLoader) {\n    if (imageLoader === noopImageLoader) {\n        let builtInLoaderName = '';\n        for (const loader of BUILT_IN_LOADERS) {\n            if (loader.testUrl(ngSrc)) {\n                builtInLoaderName = loader.name;\n                break;\n            }\n        }\n        if (builtInLoaderName) {\n            console.warn(ɵformatRuntimeError(2962 /* RuntimeErrorCode.MISSING_BUILTIN_LOADER */, `NgOptimizedImage: It looks like your images may be hosted on the ` +\n                `${builtInLoaderName} CDN, but your app is not using Angular's ` +\n                `built-in loader for that CDN. We recommend switching to use ` +\n                `the built-in by calling \\`provide${builtInLoaderName}Loader()\\` ` +\n                `in your \\`providers\\` and passing it your instance's base URL. ` +\n                `If you don't want to use the built-in loader, define a custom ` +\n                `loader function using IMAGE_LOADER to silence this warning.`));\n        }\n    }\n}\n/**\n * Warns if ngSrcset is present and no loader is configured (i.e. the default one is being used).\n */\nfunction assertNoNgSrcsetWithoutLoader(dir, imageLoader) {\n    if (dir.ngSrcset && imageLoader === noopImageLoader) {\n        console.warn(ɵformatRuntimeError(2963 /* RuntimeErrorCode.MISSING_NECESSARY_LOADER */, `${imgDirectiveDetails(dir.ngSrc)} the \\`ngSrcset\\` attribute is present but ` +\n            `no image loader is configured (i.e. the default one is being used), ` +\n            `which would result in the same image being used for all configured sizes. ` +\n            `To fix this, provide a loader or remove the \\`ngSrcset\\` attribute from the image.`));\n    }\n}\n/**\n * Warns if loaderParams is present and no loader is configured (i.e. the default one is being\n * used).\n */\nfunction assertNoLoaderParamsWithoutLoader(dir, imageLoader) {\n    if (dir.loaderParams && imageLoader === noopImageLoader) {\n        console.warn(ɵformatRuntimeError(2963 /* RuntimeErrorCode.MISSING_NECESSARY_LOADER */, `${imgDirectiveDetails(dir.ngSrc)} the \\`loaderParams\\` attribute is present but ` +\n            `no image loader is configured (i.e. the default one is being used), ` +\n            `which means that the loaderParams data will not be consumed and will not affect the URL. ` +\n            `To fix this, provide a custom loader or remove the \\`loaderParams\\` attribute from the image.`));\n    }\n}\n\n// These exports represent the set of symbols exposed as a public API.\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of the common package.\n */\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of this package.\n */\n// This file only reexports content of the `src` folder. Keep it that way.\n\n// This file is not used to build this module. It is only used during editing\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { APP_BASE_HREF, AsyncPipe, BrowserPlatformLocation, CommonModule, CurrencyPipe, DATE_PIPE_DEFAULT_OPTIONS, DATE_PIPE_DEFAULT_TIMEZONE, DOCUMENT, DatePipe, DecimalPipe, FormStyle, FormatWidth, HashLocationStrategy, I18nPluralPipe, I18nSelectPipe, IMAGE_CONFIG, IMAGE_LOADER, JsonPipe, KeyValuePipe, LOCATION_INITIALIZED, Location, LocationStrategy, LowerCasePipe, NgClass, NgComponentOutlet, NgForOf as NgFor, NgForOf, NgForOfContext, NgIf, NgIfContext, NgLocaleLocalization, NgLocalization, NgOptimizedImage, NgPlural, NgPluralCase, NgStyle, NgSwitch, NgSwitchCase, NgSwitchDefault, NgTemplateOutlet, NumberFormatStyle, NumberSymbol, PRECONNECT_CHECK_BLOCKLIST, PathLocationStrategy, PercentPipe, PlatformLocation, Plural, SlicePipe, TitleCasePipe, TranslationWidth, UpperCasePipe, VERSION, ViewportScroller, WeekDay, XhrFactory, formatCurrency, formatDate, formatNumber, formatPercent, getCurrencySymbol, getLocaleCurrencyCode, getLocaleCurrencyName, getLocaleCurrencySymbol, getLocaleDateFormat, getLocaleDateTimeFormat, getLocaleDayNames, getLocaleDayPeriods, getLocaleDirection, getLocaleEraNames, getLocaleExtraDayPeriodRules, getLocaleExtraDayPeriods, getLocaleFirstDayOfWeek, getLocaleId, getLocaleMonthNames, getLocaleNumberFormat, getLocaleNumberSymbol, getLocalePluralCase, getLocaleTimeFormat, getLocaleWeekEndRange, getNumberOfCurrencyDigits, isPlatformBrowser, isPlatformServer, isPlatformWorkerApp, isPlatformWorkerUi, provideCloudflareLoader, provideCloudinaryLoader, provideImageKitLoader, provideImgixLoader, registerLocaleData, DomAdapter as ɵDomAdapter, NullViewportScroller as ɵNullViewportScroller, PLATFORM_BROWSER_ID as ɵPLATFORM_BROWSER_ID, PLATFORM_SERVER_ID as ɵPLATFORM_SERVER_ID, PLATFORM_WORKER_APP_ID as ɵPLATFORM_WORKER_APP_ID, PLATFORM_WORKER_UI_ID as ɵPLATFORM_WORKER_UI_ID, getDOM as ɵgetDOM, parseCookieValue as ɵparseCookieValue, setRootDomAdapter as ɵsetRootDomAdapter };\n","/**\n * @license Angular v15.2.10\n * (c) 2010-2022 Google LLC. https://angular.io/\n * License: MIT\n */\n\nimport * as i1 from '@angular/common';\nimport { DOCUMENT, ɵparseCookieValue, XhrFactory as XhrFactory$1 } from '@angular/common';\nimport * as i0 from '@angular/core';\nimport { Injectable, InjectionToken, inject, Inject, PLATFORM_ID, makeEnvironmentProviders, NgModule } from '@angular/core';\nimport { of, Observable } from 'rxjs';\nimport { concatMap, filter, map } from 'rxjs/operators';\n\n/**\n * Transforms an `HttpRequest` into a stream of `HttpEvent`s, one of which will likely be a\n * `HttpResponse`.\n *\n * `HttpHandler` is injectable. When injected, the handler instance dispatches requests to the\n * first interceptor in the chain, which dispatches to the second, etc, eventually reaching the\n * `HttpBackend`.\n *\n * In an `HttpInterceptor`, the `HttpHandler` parameter is the next interceptor in the chain.\n *\n * @publicApi\n */\nclass HttpHandler {\n}\n/**\n * A final `HttpHandler` which will dispatch the request via browser HTTP APIs to a backend.\n *\n * Interceptors sit between the `HttpClient` interface and the `HttpBackend`.\n *\n * When injected, `HttpBackend` dispatches requests directly to the backend, without going\n * through the interceptor chain.\n *\n * @publicApi\n */\nclass HttpBackend {\n}\n\n/**\n * Represents the header configuration options for an HTTP request.\n * Instances are immutable. Modifying methods return a cloned\n * instance with the change. The original object is never changed.\n *\n * @publicApi\n */\nclass HttpHeaders {\n    /**  Constructs a new HTTP header object with the given values.*/\n    constructor(headers) {\n        /**\n         * Internal map of lowercased header names to the normalized\n         * form of the name (the form seen first).\n         */\n        this.normalizedNames = new Map();\n        /**\n         * Queued updates to be materialized the next initialization.\n         */\n        this.lazyUpdate = null;\n        if (!headers) {\n            this.headers = new Map();\n        }\n        else if (typeof headers === 'string') {\n            this.lazyInit = () => {\n                this.headers = new Map();\n                headers.split('\\n').forEach(line => {\n                    const index = line.indexOf(':');\n                    if (index > 0) {\n                        const name = line.slice(0, index);\n                        const key = name.toLowerCase();\n                        const value = line.slice(index + 1).trim();\n                        this.maybeSetNormalizedName(name, key);\n                        if (this.headers.has(key)) {\n                            this.headers.get(key).push(value);\n                        }\n                        else {\n                            this.headers.set(key, [value]);\n                        }\n                    }\n                });\n            };\n        }\n        else {\n            this.lazyInit = () => {\n                if (typeof ngDevMode === 'undefined' || ngDevMode) {\n                    assertValidHeaders(headers);\n                }\n                this.headers = new Map();\n                Object.entries(headers).forEach(([name, values]) => {\n                    let headerValues;\n                    if (typeof values === 'string') {\n                        headerValues = [values];\n                    }\n                    else if (typeof values === 'number') {\n                        headerValues = [values.toString()];\n                    }\n                    else {\n                        headerValues = values.map((value) => value.toString());\n                    }\n                    if (headerValues.length > 0) {\n                        const key = name.toLowerCase();\n                        this.headers.set(key, headerValues);\n                        this.maybeSetNormalizedName(name, key);\n                    }\n                });\n            };\n        }\n    }\n    /**\n     * Checks for existence of a given header.\n     *\n     * @param name The header name to check for existence.\n     *\n     * @returns True if the header exists, false otherwise.\n     */\n    has(name) {\n        this.init();\n        return this.headers.has(name.toLowerCase());\n    }\n    /**\n     * Retrieves the first value of a given header.\n     *\n     * @param name The header name.\n     *\n     * @returns The value string if the header exists, null otherwise\n     */\n    get(name) {\n        this.init();\n        const values = this.headers.get(name.toLowerCase());\n        return values && values.length > 0 ? values[0] : null;\n    }\n    /**\n     * Retrieves the names of the headers.\n     *\n     * @returns A list of header names.\n     */\n    keys() {\n        this.init();\n        return Array.from(this.normalizedNames.values());\n    }\n    /**\n     * Retrieves a list of values for a given header.\n     *\n     * @param name The header name from which to retrieve values.\n     *\n     * @returns A string of values if the header exists, null otherwise.\n     */\n    getAll(name) {\n        this.init();\n        return this.headers.get(name.toLowerCase()) || null;\n    }\n    /**\n     * Appends a new value to the existing set of values for a header\n     * and returns them in a clone of the original instance.\n     *\n     * @param name The header name for which to append the values.\n     * @param value The value to append.\n     *\n     * @returns A clone of the HTTP headers object with the value appended to the given header.\n     */\n    append(name, value) {\n        return this.clone({ name, value, op: 'a' });\n    }\n    /**\n     * Sets or modifies a value for a given header in a clone of the original instance.\n     * If the header already exists, its value is replaced with the given value\n     * in the returned object.\n     *\n     * @param name The header name.\n     * @param value The value or values to set or override for the given header.\n     *\n     * @returns A clone of the HTTP headers object with the newly set header value.\n     */\n    set(name, value) {\n        return this.clone({ name, value, op: 's' });\n    }\n    /**\n     * Deletes values for a given header in a clone of the original instance.\n     *\n     * @param name The header name.\n     * @param value The value or values to delete for the given header.\n     *\n     * @returns A clone of the HTTP headers object with the given value deleted.\n     */\n    delete(name, value) {\n        return this.clone({ name, value, op: 'd' });\n    }\n    maybeSetNormalizedName(name, lcName) {\n        if (!this.normalizedNames.has(lcName)) {\n            this.normalizedNames.set(lcName, name);\n        }\n    }\n    init() {\n        if (!!this.lazyInit) {\n            if (this.lazyInit instanceof HttpHeaders) {\n                this.copyFrom(this.lazyInit);\n            }\n            else {\n                this.lazyInit();\n            }\n            this.lazyInit = null;\n            if (!!this.lazyUpdate) {\n                this.lazyUpdate.forEach(update => this.applyUpdate(update));\n                this.lazyUpdate = null;\n            }\n        }\n    }\n    copyFrom(other) {\n        other.init();\n        Array.from(other.headers.keys()).forEach(key => {\n            this.headers.set(key, other.headers.get(key));\n            this.normalizedNames.set(key, other.normalizedNames.get(key));\n        });\n    }\n    clone(update) {\n        const clone = new HttpHeaders();\n        clone.lazyInit =\n            (!!this.lazyInit && this.lazyInit instanceof HttpHeaders) ? this.lazyInit : this;\n        clone.lazyUpdate = (this.lazyUpdate || []).concat([update]);\n        return clone;\n    }\n    applyUpdate(update) {\n        const key = update.name.toLowerCase();\n        switch (update.op) {\n            case 'a':\n            case 's':\n                let value = update.value;\n                if (typeof value === 'string') {\n                    value = [value];\n                }\n                if (value.length === 0) {\n                    return;\n                }\n                this.maybeSetNormalizedName(update.name, key);\n                const base = (update.op === 'a' ? this.headers.get(key) : undefined) || [];\n                base.push(...value);\n                this.headers.set(key, base);\n                break;\n            case 'd':\n                const toDelete = update.value;\n                if (!toDelete) {\n                    this.headers.delete(key);\n                    this.normalizedNames.delete(key);\n                }\n                else {\n                    let existing = this.headers.get(key);\n                    if (!existing) {\n                        return;\n                    }\n                    existing = existing.filter(value => toDelete.indexOf(value) === -1);\n                    if (existing.length === 0) {\n                        this.headers.delete(key);\n                        this.normalizedNames.delete(key);\n                    }\n                    else {\n                        this.headers.set(key, existing);\n                    }\n                }\n                break;\n        }\n    }\n    /**\n     * @internal\n     */\n    forEach(fn) {\n        this.init();\n        Array.from(this.normalizedNames.keys())\n            .forEach(key => fn(this.normalizedNames.get(key), this.headers.get(key)));\n    }\n}\n/**\n * Verifies that the headers object has the right shape: the values\n * must be either strings, numbers or arrays. Throws an error if an invalid\n * header value is present.\n */\nfunction assertValidHeaders(headers) {\n    for (const [key, value] of Object.entries(headers)) {\n        if (!(typeof value === 'string' || typeof value === 'number') && !Array.isArray(value)) {\n            throw new Error(`Unexpected value of the \\`${key}\\` header provided. ` +\n                `Expecting either a string, a number or an array, but got: \\`${value}\\`.`);\n        }\n    }\n}\n\n/**\n * Provides encoding and decoding of URL parameter and query-string values.\n *\n * Serializes and parses URL parameter keys and values to encode and decode them.\n * If you pass URL query parameters without encoding,\n * the query parameters can be misinterpreted at the receiving end.\n *\n *\n * @publicApi\n */\nclass HttpUrlEncodingCodec {\n    /**\n     * Encodes a key name for a URL parameter or query-string.\n     * @param key The key name.\n     * @returns The encoded key name.\n     */\n    encodeKey(key) {\n        return standardEncoding(key);\n    }\n    /**\n     * Encodes the value of a URL parameter or query-string.\n     * @param value The value.\n     * @returns The encoded value.\n     */\n    encodeValue(value) {\n        return standardEncoding(value);\n    }\n    /**\n     * Decodes an encoded URL parameter or query-string key.\n     * @param key The encoded key name.\n     * @returns The decoded key name.\n     */\n    decodeKey(key) {\n        return decodeURIComponent(key);\n    }\n    /**\n     * Decodes an encoded URL parameter or query-string value.\n     * @param value The encoded value.\n     * @returns The decoded value.\n     */\n    decodeValue(value) {\n        return decodeURIComponent(value);\n    }\n}\nfunction paramParser(rawParams, codec) {\n    const map = new Map();\n    if (rawParams.length > 0) {\n        // The `window.location.search` can be used while creating an instance of the `HttpParams` class\n        // (e.g. `new HttpParams({ fromString: window.location.search })`). The `window.location.search`\n        // may start with the `?` char, so we strip it if it's present.\n        const params = rawParams.replace(/^\\?/, '').split('&');\n        params.forEach((param) => {\n            const eqIdx = param.indexOf('=');\n            const [key, val] = eqIdx == -1 ?\n                [codec.decodeKey(param), ''] :\n                [codec.decodeKey(param.slice(0, eqIdx)), codec.decodeValue(param.slice(eqIdx + 1))];\n            const list = map.get(key) || [];\n            list.push(val);\n            map.set(key, list);\n        });\n    }\n    return map;\n}\n/**\n * Encode input string with standard encodeURIComponent and then un-encode specific characters.\n */\nconst STANDARD_ENCODING_REGEX = /%(\\d[a-f0-9])/gi;\nconst STANDARD_ENCODING_REPLACEMENTS = {\n    '40': '@',\n    '3A': ':',\n    '24': '$',\n    '2C': ',',\n    '3B': ';',\n    '3D': '=',\n    '3F': '?',\n    '2F': '/',\n};\nfunction standardEncoding(v) {\n    return encodeURIComponent(v).replace(STANDARD_ENCODING_REGEX, (s, t) => STANDARD_ENCODING_REPLACEMENTS[t] ?? s);\n}\nfunction valueToString(value) {\n    return `${value}`;\n}\n/**\n * An HTTP request/response body that represents serialized parameters,\n * per the MIME type `application/x-www-form-urlencoded`.\n *\n * This class is immutable; all mutation operations return a new instance.\n *\n * @publicApi\n */\nclass HttpParams {\n    constructor(options = {}) {\n        this.updates = null;\n        this.cloneFrom = null;\n        this.encoder = options.encoder || new HttpUrlEncodingCodec();\n        if (!!options.fromString) {\n            if (!!options.fromObject) {\n                throw new Error(`Cannot specify both fromString and fromObject.`);\n            }\n            this.map = paramParser(options.fromString, this.encoder);\n        }\n        else if (!!options.fromObject) {\n            this.map = new Map();\n            Object.keys(options.fromObject).forEach(key => {\n                const value = options.fromObject[key];\n                // convert the values to strings\n                const values = Array.isArray(value) ? value.map(valueToString) : [valueToString(value)];\n                this.map.set(key, values);\n            });\n        }\n        else {\n            this.map = null;\n        }\n    }\n    /**\n     * Reports whether the body includes one or more values for a given parameter.\n     * @param param The parameter name.\n     * @returns True if the parameter has one or more values,\n     * false if it has no value or is not present.\n     */\n    has(param) {\n        this.init();\n        return this.map.has(param);\n    }\n    /**\n     * Retrieves the first value for a parameter.\n     * @param param The parameter name.\n     * @returns The first value of the given parameter,\n     * or `null` if the parameter is not present.\n     */\n    get(param) {\n        this.init();\n        const res = this.map.get(param);\n        return !!res ? res[0] : null;\n    }\n    /**\n     * Retrieves all values for a  parameter.\n     * @param param The parameter name.\n     * @returns All values in a string array,\n     * or `null` if the parameter not present.\n     */\n    getAll(param) {\n        this.init();\n        return this.map.get(param) || null;\n    }\n    /**\n     * Retrieves all the parameters for this body.\n     * @returns The parameter names in a string array.\n     */\n    keys() {\n        this.init();\n        return Array.from(this.map.keys());\n    }\n    /**\n     * Appends a new value to existing values for a parameter.\n     * @param param The parameter name.\n     * @param value The new value to add.\n     * @return A new body with the appended value.\n     */\n    append(param, value) {\n        return this.clone({ param, value, op: 'a' });\n    }\n    /**\n     * Constructs a new body with appended values for the given parameter name.\n     * @param params parameters and values\n     * @return A new body with the new value.\n     */\n    appendAll(params) {\n        const updates = [];\n        Object.keys(params).forEach(param => {\n            const value = params[param];\n            if (Array.isArray(value)) {\n                value.forEach(_value => {\n                    updates.push({ param, value: _value, op: 'a' });\n                });\n            }\n            else {\n                updates.push({ param, value: value, op: 'a' });\n            }\n        });\n        return this.clone(updates);\n    }\n    /**\n     * Replaces the value for a parameter.\n     * @param param The parameter name.\n     * @param value The new value.\n     * @return A new body with the new value.\n     */\n    set(param, value) {\n        return this.clone({ param, value, op: 's' });\n    }\n    /**\n     * Removes a given value or all values from a parameter.\n     * @param param The parameter name.\n     * @param value The value to remove, if provided.\n     * @return A new body with the given value removed, or with all values\n     * removed if no value is specified.\n     */\n    delete(param, value) {\n        return this.clone({ param, value, op: 'd' });\n    }\n    /**\n     * Serializes the body to an encoded string, where key-value pairs (separated by `=`) are\n     * separated by `&`s.\n     */\n    toString() {\n        this.init();\n        return this.keys()\n            .map(key => {\n            const eKey = this.encoder.encodeKey(key);\n            // `a: ['1']` produces `'a=1'`\n            // `b: []` produces `''`\n            // `c: ['1', '2']` produces `'c=1&c=2'`\n            return this.map.get(key).map(value => eKey + '=' + this.encoder.encodeValue(value))\n                .join('&');\n        })\n            // filter out empty values because `b: []` produces `''`\n            // which results in `a=1&&c=1&c=2` instead of `a=1&c=1&c=2` if we don't\n            .filter(param => param !== '')\n            .join('&');\n    }\n    clone(update) {\n        const clone = new HttpParams({ encoder: this.encoder });\n        clone.cloneFrom = this.cloneFrom || this;\n        clone.updates = (this.updates || []).concat(update);\n        return clone;\n    }\n    init() {\n        if (this.map === null) {\n            this.map = new Map();\n        }\n        if (this.cloneFrom !== null) {\n            this.cloneFrom.init();\n            this.cloneFrom.keys().forEach(key => this.map.set(key, this.cloneFrom.map.get(key)));\n            this.updates.forEach(update => {\n                switch (update.op) {\n                    case 'a':\n                    case 's':\n                        const base = (update.op === 'a' ? this.map.get(update.param) : undefined) || [];\n                        base.push(valueToString(update.value));\n                        this.map.set(update.param, base);\n                        break;\n                    case 'd':\n                        if (update.value !== undefined) {\n                            let base = this.map.get(update.param) || [];\n                            const idx = base.indexOf(valueToString(update.value));\n                            if (idx !== -1) {\n                                base.splice(idx, 1);\n                            }\n                            if (base.length > 0) {\n                                this.map.set(update.param, base);\n                            }\n                            else {\n                                this.map.delete(update.param);\n                            }\n                        }\n                        else {\n                            this.map.delete(update.param);\n                            break;\n                        }\n                }\n            });\n            this.cloneFrom = this.updates = null;\n        }\n    }\n}\n\n/**\n * A token used to manipulate and access values stored in `HttpContext`.\n *\n * @publicApi\n */\nclass HttpContextToken {\n    constructor(defaultValue) {\n        this.defaultValue = defaultValue;\n    }\n}\n/**\n * Http context stores arbitrary user defined values and ensures type safety without\n * actually knowing the types. It is backed by a `Map` and guarantees that keys do not clash.\n *\n * This context is mutable and is shared between cloned requests unless explicitly specified.\n *\n * @usageNotes\n *\n * ### Usage Example\n *\n * ```typescript\n * // inside cache.interceptors.ts\n * export const IS_CACHE_ENABLED = new HttpContextToken<boolean>(() => false);\n *\n * export class CacheInterceptor implements HttpInterceptor {\n *\n *   intercept(req: HttpRequest<any>, delegate: HttpHandler): Observable<HttpEvent<any>> {\n *     if (req.context.get(IS_CACHE_ENABLED) === true) {\n *       return ...;\n *     }\n *     return delegate.handle(req);\n *   }\n * }\n *\n * // inside a service\n *\n * this.httpClient.get('/api/weather', {\n *   context: new HttpContext().set(IS_CACHE_ENABLED, true)\n * }).subscribe(...);\n * ```\n *\n * @publicApi\n */\nclass HttpContext {\n    constructor() {\n        this.map = new Map();\n    }\n    /**\n     * Store a value in the context. If a value is already present it will be overwritten.\n     *\n     * @param token The reference to an instance of `HttpContextToken`.\n     * @param value The value to store.\n     *\n     * @returns A reference to itself for easy chaining.\n     */\n    set(token, value) {\n        this.map.set(token, value);\n        return this;\n    }\n    /**\n     * Retrieve the value associated with the given token.\n     *\n     * @param token The reference to an instance of `HttpContextToken`.\n     *\n     * @returns The stored value or default if one is defined.\n     */\n    get(token) {\n        if (!this.map.has(token)) {\n            this.map.set(token, token.defaultValue());\n        }\n        return this.map.get(token);\n    }\n    /**\n     * Delete the value associated with the given token.\n     *\n     * @param token The reference to an instance of `HttpContextToken`.\n     *\n     * @returns A reference to itself for easy chaining.\n     */\n    delete(token) {\n        this.map.delete(token);\n        return this;\n    }\n    /**\n     * Checks for existence of a given token.\n     *\n     * @param token The reference to an instance of `HttpContextToken`.\n     *\n     * @returns True if the token exists, false otherwise.\n     */\n    has(token) {\n        return this.map.has(token);\n    }\n    /**\n     * @returns a list of tokens currently stored in the context.\n     */\n    keys() {\n        return this.map.keys();\n    }\n}\n\n/**\n * Determine whether the given HTTP method may include a body.\n */\nfunction mightHaveBody(method) {\n    switch (method) {\n        case 'DELETE':\n        case 'GET':\n        case 'HEAD':\n        case 'OPTIONS':\n        case 'JSONP':\n            return false;\n        default:\n            return true;\n    }\n}\n/**\n * Safely assert whether the given value is an ArrayBuffer.\n *\n * In some execution environments ArrayBuffer is not defined.\n */\nfunction isArrayBuffer(value) {\n    return typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer;\n}\n/**\n * Safely assert whether the given value is a Blob.\n *\n * In some execution environments Blob is not defined.\n */\nfunction isBlob(value) {\n    return typeof Blob !== 'undefined' && value instanceof Blob;\n}\n/**\n * Safely assert whether the given value is a FormData instance.\n *\n * In some execution environments FormData is not defined.\n */\nfunction isFormData(value) {\n    return typeof FormData !== 'undefined' && value instanceof FormData;\n}\n/**\n * Safely assert whether the given value is a URLSearchParams instance.\n *\n * In some execution environments URLSearchParams is not defined.\n */\nfunction isUrlSearchParams(value) {\n    return typeof URLSearchParams !== 'undefined' && value instanceof URLSearchParams;\n}\n/**\n * An outgoing HTTP request with an optional typed body.\n *\n * `HttpRequest` represents an outgoing request, including URL, method,\n * headers, body, and other request configuration options. Instances should be\n * assumed to be immutable. To modify a `HttpRequest`, the `clone`\n * method should be used.\n *\n * @publicApi\n */\nclass HttpRequest {\n    constructor(method, url, third, fourth) {\n        this.url = url;\n        /**\n         * The request body, or `null` if one isn't set.\n         *\n         * Bodies are not enforced to be immutable, as they can include a reference to any\n         * user-defined data type. However, interceptors should take care to preserve\n         * idempotence by treating them as such.\n         */\n        this.body = null;\n        /**\n         * Whether this request should be made in a way that exposes progress events.\n         *\n         * Progress events are expensive (change detection runs on each event) and so\n         * they should only be requested if the consumer intends to monitor them.\n         */\n        this.reportProgress = false;\n        /**\n         * Whether this request should be sent with outgoing credentials (cookies).\n         */\n        this.withCredentials = false;\n        /**\n         * The expected response type of the server.\n         *\n         * This is used to parse the response appropriately before returning it to\n         * the requestee.\n         */\n        this.responseType = 'json';\n        this.method = method.toUpperCase();\n        // Next, need to figure out which argument holds the HttpRequestInit\n        // options, if any.\n        let options;\n        // Check whether a body argument is expected. The only valid way to omit\n        // the body argument is to use a known no-body method like GET.\n        if (mightHaveBody(this.method) || !!fourth) {\n            // Body is the third argument, options are the fourth.\n            this.body = (third !== undefined) ? third : null;\n            options = fourth;\n        }\n        else {\n            // No body required, options are the third argument. The body stays null.\n            options = third;\n        }\n        // If options have been passed, interpret them.\n        if (options) {\n            // Normalize reportProgress and withCredentials.\n            this.reportProgress = !!options.reportProgress;\n            this.withCredentials = !!options.withCredentials;\n            // Override default response type of 'json' if one is provided.\n            if (!!options.responseType) {\n                this.responseType = options.responseType;\n            }\n            // Override headers if they're provided.\n            if (!!options.headers) {\n                this.headers = options.headers;\n            }\n            if (!!options.context) {\n                this.context = options.context;\n            }\n            if (!!options.params) {\n                this.params = options.params;\n            }\n        }\n        // If no headers have been passed in, construct a new HttpHeaders instance.\n        if (!this.headers) {\n            this.headers = new HttpHeaders();\n        }\n        // If no context have been passed in, construct a new HttpContext instance.\n        if (!this.context) {\n            this.context = new HttpContext();\n        }\n        // If no parameters have been passed in, construct a new HttpUrlEncodedParams instance.\n        if (!this.params) {\n            this.params = new HttpParams();\n            this.urlWithParams = url;\n        }\n        else {\n            // Encode the parameters to a string in preparation for inclusion in the URL.\n            const params = this.params.toString();\n            if (params.length === 0) {\n                // No parameters, the visible URL is just the URL given at creation time.\n                this.urlWithParams = url;\n            }\n            else {\n                // Does the URL already have query parameters? Look for '?'.\n                const qIdx = url.indexOf('?');\n                // There are 3 cases to handle:\n                // 1) No existing parameters -> append '?' followed by params.\n                // 2) '?' exists and is followed by existing query string ->\n                //    append '&' followed by params.\n                // 3) '?' exists at the end of the url -> append params directly.\n                // This basically amounts to determining the character, if any, with\n                // which to join the URL and parameters.\n                const sep = qIdx === -1 ? '?' : (qIdx < url.length - 1 ? '&' : '');\n                this.urlWithParams = url + sep + params;\n            }\n        }\n    }\n    /**\n     * Transform the free-form body into a serialized format suitable for\n     * transmission to the server.\n     */\n    serializeBody() {\n        // If no body is present, no need to serialize it.\n        if (this.body === null) {\n            return null;\n        }\n        // Check whether the body is already in a serialized form. If so,\n        // it can just be returned directly.\n        if (isArrayBuffer(this.body) || isBlob(this.body) || isFormData(this.body) ||\n            isUrlSearchParams(this.body) || typeof this.body === 'string') {\n            return this.body;\n        }\n        // Check whether the body is an instance of HttpUrlEncodedParams.\n        if (this.body instanceof HttpParams) {\n            return this.body.toString();\n        }\n        // Check whether the body is an object or array, and serialize with JSON if so.\n        if (typeof this.body === 'object' || typeof this.body === 'boolean' ||\n            Array.isArray(this.body)) {\n            return JSON.stringify(this.body);\n        }\n        // Fall back on toString() for everything else.\n        return this.body.toString();\n    }\n    /**\n     * Examine the body and attempt to infer an appropriate MIME type\n     * for it.\n     *\n     * If no such type can be inferred, this method will return `null`.\n     */\n    detectContentTypeHeader() {\n        // An empty body has no content type.\n        if (this.body === null) {\n            return null;\n        }\n        // FormData bodies rely on the browser's content type assignment.\n        if (isFormData(this.body)) {\n            return null;\n        }\n        // Blobs usually have their own content type. If it doesn't, then\n        // no type can be inferred.\n        if (isBlob(this.body)) {\n            return this.body.type || null;\n        }\n        // Array buffers have unknown contents and thus no type can be inferred.\n        if (isArrayBuffer(this.body)) {\n            return null;\n        }\n        // Technically, strings could be a form of JSON data, but it's safe enough\n        // to assume they're plain strings.\n        if (typeof this.body === 'string') {\n            return 'text/plain';\n        }\n        // `HttpUrlEncodedParams` has its own content-type.\n        if (this.body instanceof HttpParams) {\n            return 'application/x-www-form-urlencoded;charset=UTF-8';\n        }\n        // Arrays, objects, boolean and numbers will be encoded as JSON.\n        if (typeof this.body === 'object' || typeof this.body === 'number' ||\n            typeof this.body === 'boolean') {\n            return 'application/json';\n        }\n        // No type could be inferred.\n        return null;\n    }\n    clone(update = {}) {\n        // For method, url, and responseType, take the current value unless\n        // it is overridden in the update hash.\n        const method = update.method || this.method;\n        const url = update.url || this.url;\n        const responseType = update.responseType || this.responseType;\n        // The body is somewhat special - a `null` value in update.body means\n        // whatever current body is present is being overridden with an empty\n        // body, whereas an `undefined` value in update.body implies no\n        // override.\n        const body = (update.body !== undefined) ? update.body : this.body;\n        // Carefully handle the boolean options to differentiate between\n        // `false` and `undefined` in the update args.\n        const withCredentials = (update.withCredentials !== undefined) ? update.withCredentials : this.withCredentials;\n        const reportProgress = (update.reportProgress !== undefined) ? update.reportProgress : this.reportProgress;\n        // Headers and params may be appended to if `setHeaders` or\n        // `setParams` are used.\n        let headers = update.headers || this.headers;\n        let params = update.params || this.params;\n        // Pass on context if needed\n        const context = update.context ?? this.context;\n        // Check whether the caller has asked to add headers.\n        if (update.setHeaders !== undefined) {\n            // Set every requested header.\n            headers =\n                Object.keys(update.setHeaders)\n                    .reduce((headers, name) => headers.set(name, update.setHeaders[name]), headers);\n        }\n        // Check whether the caller has asked to set params.\n        if (update.setParams) {\n            // Set every requested param.\n            params = Object.keys(update.setParams)\n                .reduce((params, param) => params.set(param, update.setParams[param]), params);\n        }\n        // Finally, construct the new HttpRequest using the pieces from above.\n        return new HttpRequest(method, url, body, {\n            params,\n            headers,\n            context,\n            reportProgress,\n            responseType,\n            withCredentials,\n        });\n    }\n}\n\n/**\n * Type enumeration for the different kinds of `HttpEvent`.\n *\n * @publicApi\n */\nvar HttpEventType;\n(function (HttpEventType) {\n    /**\n     * The request was sent out over the wire.\n     */\n    HttpEventType[HttpEventType[\"Sent\"] = 0] = \"Sent\";\n    /**\n     * An upload progress event was received.\n     */\n    HttpEventType[HttpEventType[\"UploadProgress\"] = 1] = \"UploadProgress\";\n    /**\n     * The response status code and headers were received.\n     */\n    HttpEventType[HttpEventType[\"ResponseHeader\"] = 2] = \"ResponseHeader\";\n    /**\n     * A download progress event was received.\n     */\n    HttpEventType[HttpEventType[\"DownloadProgress\"] = 3] = \"DownloadProgress\";\n    /**\n     * The full response including the body was received.\n     */\n    HttpEventType[HttpEventType[\"Response\"] = 4] = \"Response\";\n    /**\n     * A custom event from an interceptor or a backend.\n     */\n    HttpEventType[HttpEventType[\"User\"] = 5] = \"User\";\n})(HttpEventType || (HttpEventType = {}));\n/**\n * Base class for both `HttpResponse` and `HttpHeaderResponse`.\n *\n * @publicApi\n */\nclass HttpResponseBase {\n    /**\n     * Super-constructor for all responses.\n     *\n     * The single parameter accepted is an initialization hash. Any properties\n     * of the response passed there will override the default values.\n     */\n    constructor(init, defaultStatus = 200 /* HttpStatusCode.Ok */, defaultStatusText = 'OK') {\n        // If the hash has values passed, use them to initialize the response.\n        // Otherwise use the default values.\n        this.headers = init.headers || new HttpHeaders();\n        this.status = init.status !== undefined ? init.status : defaultStatus;\n        this.statusText = init.statusText || defaultStatusText;\n        this.url = init.url || null;\n        // Cache the ok value to avoid defining a getter.\n        this.ok = this.status >= 200 && this.status < 300;\n    }\n}\n/**\n * A partial HTTP response which only includes the status and header data,\n * but no response body.\n *\n * `HttpHeaderResponse` is a `HttpEvent` available on the response\n * event stream, only when progress events are requested.\n *\n * @publicApi\n */\nclass HttpHeaderResponse extends HttpResponseBase {\n    /**\n     * Create a new `HttpHeaderResponse` with the given parameters.\n     */\n    constructor(init = {}) {\n        super(init);\n        this.type = HttpEventType.ResponseHeader;\n    }\n    /**\n     * Copy this `HttpHeaderResponse`, overriding its contents with the\n     * given parameter hash.\n     */\n    clone(update = {}) {\n        // Perform a straightforward initialization of the new HttpHeaderResponse,\n        // overriding the current parameters with new ones if given.\n        return new HttpHeaderResponse({\n            headers: update.headers || this.headers,\n            status: update.status !== undefined ? update.status : this.status,\n            statusText: update.statusText || this.statusText,\n            url: update.url || this.url || undefined,\n        });\n    }\n}\n/**\n * A full HTTP response, including a typed response body (which may be `null`\n * if one was not returned).\n *\n * `HttpResponse` is a `HttpEvent` available on the response event\n * stream.\n *\n * @publicApi\n */\nclass HttpResponse extends HttpResponseBase {\n    /**\n     * Construct a new `HttpResponse`.\n     */\n    constructor(init = {}) {\n        super(init);\n        this.type = HttpEventType.Response;\n        this.body = init.body !== undefined ? init.body : null;\n    }\n    clone(update = {}) {\n        return new HttpResponse({\n            body: (update.body !== undefined) ? update.body : this.body,\n            headers: update.headers || this.headers,\n            status: (update.status !== undefined) ? update.status : this.status,\n            statusText: update.statusText || this.statusText,\n            url: update.url || this.url || undefined,\n        });\n    }\n}\n/**\n * A response that represents an error or failure, either from a\n * non-successful HTTP status, an error while executing the request,\n * or some other failure which occurred during the parsing of the response.\n *\n * Any error returned on the `Observable` response stream will be\n * wrapped in an `HttpErrorResponse` to provide additional context about\n * the state of the HTTP layer when the error occurred. The error property\n * will contain either a wrapped Error object or the error response returned\n * from the server.\n *\n * @publicApi\n */\nclass HttpErrorResponse extends HttpResponseBase {\n    constructor(init) {\n        // Initialize with a default status of 0 / Unknown Error.\n        super(init, 0, 'Unknown Error');\n        this.name = 'HttpErrorResponse';\n        /**\n         * Errors are never okay, even when the status code is in the 2xx success range.\n         */\n        this.ok = false;\n        // If the response was successful, then this was a parse error. Otherwise, it was\n        // a protocol-level failure of some sort. Either the request failed in transit\n        // or the server returned an unsuccessful status code.\n        if (this.status >= 200 && this.status < 300) {\n            this.message = `Http failure during parsing for ${init.url || '(unknown url)'}`;\n        }\n        else {\n            this.message = `Http failure response for ${init.url || '(unknown url)'}: ${init.status} ${init.statusText}`;\n        }\n        this.error = init.error || null;\n    }\n}\n\n/**\n * Constructs an instance of `HttpRequestOptions<T>` from a source `HttpMethodOptions` and\n * the given `body`. This function clones the object and adds the body.\n *\n * Note that the `responseType` *options* value is a String that identifies the\n * single data type of the response.\n * A single overload version of the method handles each response type.\n * The value of `responseType` cannot be a union, as the combined signature could imply.\n *\n */\nfunction addBody(options, body) {\n    return {\n        body,\n        headers: options.headers,\n        context: options.context,\n        observe: options.observe,\n        params: options.params,\n        reportProgress: options.reportProgress,\n        responseType: options.responseType,\n        withCredentials: options.withCredentials,\n    };\n}\n/**\n * Performs HTTP requests.\n * This service is available as an injectable class, with methods to perform HTTP requests.\n * Each request method has multiple signatures, and the return type varies based on\n * the signature that is called (mainly the values of `observe` and `responseType`).\n *\n * Note that the `responseType` *options* value is a String that identifies the\n * single data type of the response.\n * A single overload version of the method handles each response type.\n * The value of `responseType` cannot be a union, as the combined signature could imply.\n\n *\n * @usageNotes\n * Sample HTTP requests for the [Tour of Heroes](/tutorial/tour-of-heroes/toh-pt0) application.\n *\n * ### HTTP Request Example\n *\n * ```\n *  // GET heroes whose name contains search term\n * searchHeroes(term: string): observable<Hero[]>{\n *\n *  const params = new HttpParams({fromString: 'name=term'});\n *    return this.httpClient.request('GET', this.heroesUrl, {responseType:'json', params});\n * }\n * ```\n *\n * Alternatively, the parameter string can be used without invoking HttpParams\n * by directly joining to the URL.\n * ```\n * this.httpClient.request('GET', this.heroesUrl + '?' + 'name=term', {responseType:'json'});\n * ```\n *\n *\n * ### JSONP Example\n * ```\n * requestJsonp(url, callback = 'callback') {\n *  return this.httpClient.jsonp(this.heroesURL, callback);\n * }\n * ```\n *\n * ### PATCH Example\n * ```\n * // PATCH one of the heroes' name\n * patchHero (id: number, heroName: string): Observable<{}> {\n * const url = `${this.heroesUrl}/${id}`;   // PATCH api/heroes/42\n *  return this.httpClient.patch(url, {name: heroName}, httpOptions)\n *    .pipe(catchError(this.handleError('patchHero')));\n * }\n * ```\n *\n * @see [HTTP Guide](guide/http)\n * @see [HTTP Request](api/common/http/HttpRequest)\n *\n * @publicApi\n */\nclass HttpClient {\n    constructor(handler) {\n        this.handler = handler;\n    }\n    /**\n     * Constructs an observable for a generic HTTP request that, when subscribed,\n     * fires the request through the chain of registered interceptors and on to the\n     * server.\n     *\n     * You can pass an `HttpRequest` directly as the only parameter. In this case,\n     * the call returns an observable of the raw `HttpEvent` stream.\n     *\n     * Alternatively you can pass an HTTP method as the first parameter,\n     * a URL string as the second, and an options hash containing the request body as the third.\n     * See `addBody()`. In this case, the specified `responseType` and `observe` options determine the\n     * type of returned observable.\n     *   * The `responseType` value determines how a successful response body is parsed.\n     *   * If `responseType` is the default `json`, you can pass a type interface for the resulting\n     * object as a type parameter to the call.\n     *\n     * The `observe` value determines the return type, according to what you are interested in\n     * observing.\n     *   * An `observe` value of events returns an observable of the raw `HttpEvent` stream, including\n     * progress events by default.\n     *   * An `observe` value of response returns an observable of `HttpResponse<T>`,\n     * where the `T` parameter depends on the `responseType` and any optionally provided type\n     * parameter.\n     *   * An `observe` value of body returns an observable of `<T>` with the same `T` body type.\n     *\n     */\n    request(first, url, options = {}) {\n        let req;\n        // First, check whether the primary argument is an instance of `HttpRequest`.\n        if (first instanceof HttpRequest) {\n            // It is. The other arguments must be undefined (per the signatures) and can be\n            // ignored.\n            req = first;\n        }\n        else {\n            // It's a string, so it represents a URL. Construct a request based on it,\n            // and incorporate the remaining arguments (assuming `GET` unless a method is\n            // provided.\n            // Figure out the headers.\n            let headers = undefined;\n            if (options.headers instanceof HttpHeaders) {\n                headers = options.headers;\n            }\n            else {\n                headers = new HttpHeaders(options.headers);\n            }\n            // Sort out parameters.\n            let params = undefined;\n            if (!!options.params) {\n                if (options.params instanceof HttpParams) {\n                    params = options.params;\n                }\n                else {\n                    params = new HttpParams({ fromObject: options.params });\n                }\n            }\n            // Construct the request.\n            req = new HttpRequest(first, url, (options.body !== undefined ? options.body : null), {\n                headers,\n                context: options.context,\n                params,\n                reportProgress: options.reportProgress,\n                // By default, JSON is assumed to be returned for all calls.\n                responseType: options.responseType || 'json',\n                withCredentials: options.withCredentials,\n            });\n        }\n        // Start with an Observable.of() the initial request, and run the handler (which\n        // includes all interceptors) inside a concatMap(). This way, the handler runs\n        // inside an Observable chain, which causes interceptors to be re-run on every\n        // subscription (this also makes retries re-run the handler, including interceptors).\n        const events$ = of(req).pipe(concatMap((req) => this.handler.handle(req)));\n        // If coming via the API signature which accepts a previously constructed HttpRequest,\n        // the only option is to get the event stream. Otherwise, return the event stream if\n        // that is what was requested.\n        if (first instanceof HttpRequest || options.observe === 'events') {\n            return events$;\n        }\n        // The requested stream contains either the full response or the body. In either\n        // case, the first step is to filter the event stream to extract a stream of\n        // responses(s).\n        const res$ = events$.pipe(filter((event) => event instanceof HttpResponse));\n        // Decide which stream to return.\n        switch (options.observe || 'body') {\n            case 'body':\n                // The requested stream is the body. Map the response stream to the response\n                // body. This could be done more simply, but a misbehaving interceptor might\n                // transform the response body into a different format and ignore the requested\n                // responseType. Guard against this by validating that the response is of the\n                // requested type.\n                switch (req.responseType) {\n                    case 'arraybuffer':\n                        return res$.pipe(map((res) => {\n                            // Validate that the body is an ArrayBuffer.\n                            if (res.body !== null && !(res.body instanceof ArrayBuffer)) {\n                                throw new Error('Response is not an ArrayBuffer.');\n                            }\n                            return res.body;\n                        }));\n                    case 'blob':\n                        return res$.pipe(map((res) => {\n                            // Validate that the body is a Blob.\n                            if (res.body !== null && !(res.body instanceof Blob)) {\n                                throw new Error('Response is not a Blob.');\n                            }\n                            return res.body;\n                        }));\n                    case 'text':\n                        return res$.pipe(map((res) => {\n                            // Validate that the body is a string.\n                            if (res.body !== null && typeof res.body !== 'string') {\n                                throw new Error('Response is not a string.');\n                            }\n                            return res.body;\n                        }));\n                    case 'json':\n                    default:\n                        // No validation needed for JSON responses, as they can be of any type.\n                        return res$.pipe(map((res) => res.body));\n                }\n            case 'response':\n                // The response stream was requested directly, so return it.\n                return res$;\n            default:\n                // Guard against new future observe types being added.\n                throw new Error(`Unreachable: unhandled observe type ${options.observe}}`);\n        }\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `DELETE` request to execute on the server. See the individual overloads for\n     * details on the return type.\n     *\n     * @param url     The endpoint URL.\n     * @param options The HTTP options to send with the request.\n     *\n     */\n    delete(url, options = {}) {\n        return this.request('DELETE', url, options);\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `GET` request to execute on the server. See the individual overloads for\n     * details on the return type.\n     */\n    get(url, options = {}) {\n        return this.request('GET', url, options);\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `HEAD` request to execute on the server. The `HEAD` method returns\n     * meta information about the resource without transferring the\n     * resource itself. See the individual overloads for\n     * details on the return type.\n     */\n    head(url, options = {}) {\n        return this.request('HEAD', url, options);\n    }\n    /**\n     * Constructs an `Observable` that, when subscribed, causes a request with the special method\n     * `JSONP` to be dispatched via the interceptor pipeline.\n     * The [JSONP pattern](https://en.wikipedia.org/wiki/JSONP) works around limitations of certain\n     * API endpoints that don't support newer,\n     * and preferable [CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS) protocol.\n     * JSONP treats the endpoint API as a JavaScript file and tricks the browser to process the\n     * requests even if the API endpoint is not located on the same domain (origin) as the client-side\n     * application making the request.\n     * The endpoint API must support JSONP callback for JSONP requests to work.\n     * The resource API returns the JSON response wrapped in a callback function.\n     * You can pass the callback function name as one of the query parameters.\n     * Note that JSONP requests can only be used with `GET` requests.\n     *\n     * @param url The resource URL.\n     * @param callbackParam The callback function name.\n     *\n     */\n    jsonp(url, callbackParam) {\n        return this.request('JSONP', url, {\n            params: new HttpParams().append(callbackParam, 'JSONP_CALLBACK'),\n            observe: 'body',\n            responseType: 'json',\n        });\n    }\n    /**\n     * Constructs an `Observable` that, when subscribed, causes the configured\n     * `OPTIONS` request to execute on the server. This method allows the client\n     * to determine the supported HTTP methods and other capabilities of an endpoint,\n     * without implying a resource action. See the individual overloads for\n     * details on the return type.\n     */\n    options(url, options = {}) {\n        return this.request('OPTIONS', url, options);\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `PATCH` request to execute on the server. See the individual overloads for\n     * details on the return type.\n     */\n    patch(url, body, options = {}) {\n        return this.request('PATCH', url, addBody(options, body));\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `POST` request to execute on the server. The server responds with the location of\n     * the replaced resource. See the individual overloads for\n     * details on the return type.\n     */\n    post(url, body, options = {}) {\n        return this.request('POST', url, addBody(options, body));\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `PUT` request to execute on the server. The `PUT` method replaces an existing resource\n     * with a new set of values.\n     * See the individual overloads for details on the return type.\n     */\n    put(url, body, options = {}) {\n        return this.request('PUT', url, addBody(options, body));\n    }\n}\nHttpClient.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpClient, deps: [{ token: HttpHandler }], target: i0.ɵɵFactoryTarget.Injectable });\nHttpClient.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpClient });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpClient, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: HttpHandler }]; } });\n\nfunction interceptorChainEndFn(req, finalHandlerFn) {\n    return finalHandlerFn(req);\n}\n/**\n * Constructs a `ChainedInterceptorFn` which adapts a legacy `HttpInterceptor` to the\n * `ChainedInterceptorFn` interface.\n */\nfunction adaptLegacyInterceptorToChain(chainTailFn, interceptor) {\n    return (initialRequest, finalHandlerFn) => interceptor.intercept(initialRequest, {\n        handle: (downstreamRequest) => chainTailFn(downstreamRequest, finalHandlerFn),\n    });\n}\n/**\n * Constructs a `ChainedInterceptorFn` which wraps and invokes a functional interceptor in the given\n * injector.\n */\nfunction chainedInterceptorFn(chainTailFn, interceptorFn, injector) {\n    // clang-format off\n    return (initialRequest, finalHandlerFn) => injector.runInContext(() => interceptorFn(initialRequest, downstreamRequest => chainTailFn(downstreamRequest, finalHandlerFn)));\n    // clang-format on\n}\n/**\n * A multi-provider token that represents the array of registered\n * `HttpInterceptor` objects.\n *\n * @publicApi\n */\nconst HTTP_INTERCEPTORS = new InjectionToken('HTTP_INTERCEPTORS');\n/**\n * A multi-provided token of `HttpInterceptorFn`s.\n */\nconst HTTP_INTERCEPTOR_FNS = new InjectionToken('HTTP_INTERCEPTOR_FNS');\n/**\n * Creates an `HttpInterceptorFn` which lazily initializes an interceptor chain from the legacy\n * class-based interceptors and runs the request through it.\n */\nfunction legacyInterceptorFnFactory() {\n    let chain = null;\n    return (req, handler) => {\n        if (chain === null) {\n            const interceptors = inject(HTTP_INTERCEPTORS, { optional: true }) ?? [];\n            // Note: interceptors are wrapped right-to-left so that final execution order is\n            // left-to-right. That is, if `interceptors` is the array `[a, b, c]`, we want to\n            // produce a chain that is conceptually `c(b(a(end)))`, which we build from the inside\n            // out.\n            chain = interceptors.reduceRight(adaptLegacyInterceptorToChain, interceptorChainEndFn);\n        }\n        return chain(req, handler);\n    };\n}\nclass HttpInterceptorHandler extends HttpHandler {\n    constructor(backend, injector) {\n        super();\n        this.backend = backend;\n        this.injector = injector;\n        this.chain = null;\n    }\n    handle(initialRequest) {\n        if (this.chain === null) {\n            const dedupedInterceptorFns = Array.from(new Set(this.injector.get(HTTP_INTERCEPTOR_FNS)));\n            // Note: interceptors are wrapped right-to-left so that final execution order is\n            // left-to-right. That is, if `dedupedInterceptorFns` is the array `[a, b, c]`, we want to\n            // produce a chain that is conceptually `c(b(a(end)))`, which we build from the inside\n            // out.\n            this.chain = dedupedInterceptorFns.reduceRight((nextSequencedFn, interceptorFn) => chainedInterceptorFn(nextSequencedFn, interceptorFn, this.injector), interceptorChainEndFn);\n        }\n        return this.chain(initialRequest, downstreamRequest => this.backend.handle(downstreamRequest));\n    }\n}\nHttpInterceptorHandler.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpInterceptorHandler, deps: [{ token: HttpBackend }, { token: i0.EnvironmentInjector }], target: i0.ɵɵFactoryTarget.Injectable });\nHttpInterceptorHandler.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpInterceptorHandler });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpInterceptorHandler, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: HttpBackend }, { type: i0.EnvironmentInjector }]; } });\n\n// Every request made through JSONP needs a callback name that's unique across the\n// whole page. Each request is assigned an id and the callback name is constructed\n// from that. The next id to be assigned is tracked in a global variable here that\n// is shared among all applications on the page.\nlet nextRequestId = 0;\n/**\n * When a pending <script> is unsubscribed we'll move it to this document, so it won't be\n * executed.\n */\nlet foreignDocument;\n// Error text given when a JSONP script is injected, but doesn't invoke the callback\n// passed in its URL.\nconst JSONP_ERR_NO_CALLBACK = 'JSONP injected script did not invoke callback.';\n// Error text given when a request is passed to the JsonpClientBackend that doesn't\n// have a request method JSONP.\nconst JSONP_ERR_WRONG_METHOD = 'JSONP requests must use JSONP request method.';\nconst JSONP_ERR_WRONG_RESPONSE_TYPE = 'JSONP requests must use Json response type.';\n// Error text given when a request is passed to the JsonpClientBackend that has\n// headers set\nconst JSONP_ERR_HEADERS_NOT_SUPPORTED = 'JSONP requests do not support headers.';\n/**\n * DI token/abstract type representing a map of JSONP callbacks.\n *\n * In the browser, this should always be the `window` object.\n *\n *\n */\nclass JsonpCallbackContext {\n}\n/**\n * Factory function that determines where to store JSONP callbacks.\n *\n * Ordinarily JSONP callbacks are stored on the `window` object, but this may not exist\n * in test environments. In that case, callbacks are stored on an anonymous object instead.\n *\n *\n */\nfunction jsonpCallbackContext() {\n    if (typeof window === 'object') {\n        return window;\n    }\n    return {};\n}\n/**\n * Processes an `HttpRequest` with the JSONP method,\n * by performing JSONP style requests.\n * @see {@link HttpHandler}\n * @see {@link HttpXhrBackend}\n *\n * @publicApi\n */\nclass JsonpClientBackend {\n    constructor(callbackMap, document) {\n        this.callbackMap = callbackMap;\n        this.document = document;\n        /**\n         * A resolved promise that can be used to schedule microtasks in the event handlers.\n         */\n        this.resolvedPromise = Promise.resolve();\n    }\n    /**\n     * Get the name of the next callback method, by incrementing the global `nextRequestId`.\n     */\n    nextCallback() {\n        return `ng_jsonp_callback_${nextRequestId++}`;\n    }\n    /**\n     * Processes a JSONP request and returns an event stream of the results.\n     * @param req The request object.\n     * @returns An observable of the response events.\n     *\n     */\n    handle(req) {\n        // Firstly, check both the method and response type. If either doesn't match\n        // then the request was improperly routed here and cannot be handled.\n        if (req.method !== 'JSONP') {\n            throw new Error(JSONP_ERR_WRONG_METHOD);\n        }\n        else if (req.responseType !== 'json') {\n            throw new Error(JSONP_ERR_WRONG_RESPONSE_TYPE);\n        }\n        // Check the request headers. JSONP doesn't support headers and\n        // cannot set any that were supplied.\n        if (req.headers.keys().length > 0) {\n            throw new Error(JSONP_ERR_HEADERS_NOT_SUPPORTED);\n        }\n        // Everything else happens inside the Observable boundary.\n        return new Observable((observer) => {\n            // The first step to make a request is to generate the callback name, and replace the\n            // callback placeholder in the URL with the name. Care has to be taken here to ensure\n            // a trailing &, if matched, gets inserted back into the URL in the correct place.\n            const callback = this.nextCallback();\n            const url = req.urlWithParams.replace(/=JSONP_CALLBACK(&|$)/, `=${callback}$1`);\n            // Construct the <script> tag and point it at the URL.\n            const node = this.document.createElement('script');\n            node.src = url;\n            // A JSONP request requires waiting for multiple callbacks. These variables\n            // are closed over and track state across those callbacks.\n            // The response object, if one has been received, or null otherwise.\n            let body = null;\n            // Whether the response callback has been called.\n            let finished = false;\n            // Set the response callback in this.callbackMap (which will be the window\n            // object in the browser. The script being loaded via the <script> tag will\n            // eventually call this callback.\n            this.callbackMap[callback] = (data) => {\n                // Data has been received from the JSONP script. Firstly, delete this callback.\n                delete this.callbackMap[callback];\n                // Set state to indicate data was received.\n                body = data;\n                finished = true;\n            };\n            // cleanup() is a utility closure that removes the <script> from the page and\n            // the response callback from the window. This logic is used in both the\n            // success, error, and cancellation paths, so it's extracted out for convenience.\n            const cleanup = () => {\n                // Remove the <script> tag if it's still on the page.\n                if (node.parentNode) {\n                    node.parentNode.removeChild(node);\n                }\n                // Remove the response callback from the callbackMap (window object in the\n                // browser).\n                delete this.callbackMap[callback];\n            };\n            // onLoad() is the success callback which runs after the response callback\n            // if the JSONP script loads successfully. The event itself is unimportant.\n            // If something went wrong, onLoad() may run without the response callback\n            // having been invoked.\n            const onLoad = (event) => {\n                // We wrap it in an extra Promise, to ensure the microtask\n                // is scheduled after the loaded endpoint has executed any potential microtask itself,\n                // which is not guaranteed in Internet Explorer and EdgeHTML. See issue #39496\n                this.resolvedPromise.then(() => {\n                    // Cleanup the page.\n                    cleanup();\n                    // Check whether the response callback has run.\n                    if (!finished) {\n                        // It hasn't, something went wrong with the request. Return an error via\n                        // the Observable error path. All JSONP errors have status 0.\n                        observer.error(new HttpErrorResponse({\n                            url,\n                            status: 0,\n                            statusText: 'JSONP Error',\n                            error: new Error(JSONP_ERR_NO_CALLBACK),\n                        }));\n                        return;\n                    }\n                    // Success. body either contains the response body or null if none was\n                    // returned.\n                    observer.next(new HttpResponse({\n                        body,\n                        status: 200 /* HttpStatusCode.Ok */,\n                        statusText: 'OK',\n                        url,\n                    }));\n                    // Complete the stream, the response is over.\n                    observer.complete();\n                });\n            };\n            // onError() is the error callback, which runs if the script returned generates\n            // a Javascript error. It emits the error via the Observable error channel as\n            // a HttpErrorResponse.\n            const onError = (error) => {\n                cleanup();\n                // Wrap the error in a HttpErrorResponse.\n                observer.error(new HttpErrorResponse({\n                    error,\n                    status: 0,\n                    statusText: 'JSONP Error',\n                    url,\n                }));\n            };\n            // Subscribe to both the success (load) and error events on the <script> tag,\n            // and add it to the page.\n            node.addEventListener('load', onLoad);\n            node.addEventListener('error', onError);\n            this.document.body.appendChild(node);\n            // The request has now been successfully sent.\n            observer.next({ type: HttpEventType.Sent });\n            // Cancellation handler.\n            return () => {\n                if (!finished) {\n                    this.removeListeners(node);\n                }\n                // And finally, clean up the page.\n                cleanup();\n            };\n        });\n    }\n    removeListeners(script) {\n        // Issue #34818\n        // Changing <script>'s ownerDocument will prevent it from execution.\n        // https://html.spec.whatwg.org/multipage/scripting.html#execute-the-script-block\n        if (!foreignDocument) {\n            foreignDocument = this.document.implementation.createHTMLDocument();\n        }\n        foreignDocument.adoptNode(script);\n    }\n}\nJsonpClientBackend.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: JsonpClientBackend, deps: [{ token: JsonpCallbackContext }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable });\nJsonpClientBackend.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: JsonpClientBackend });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: JsonpClientBackend, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: JsonpCallbackContext }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }]; } });\n/**\n * Identifies requests with the method JSONP and shifts them to the `JsonpClientBackend`.\n */\nfunction jsonpInterceptorFn(req, next) {\n    if (req.method === 'JSONP') {\n        return inject(JsonpClientBackend).handle(req);\n    }\n    // Fall through for normal HTTP requests.\n    return next(req);\n}\n/**\n * Identifies requests with the method JSONP and\n * shifts them to the `JsonpClientBackend`.\n *\n * @see {@link HttpInterceptor}\n *\n * @publicApi\n */\nclass JsonpInterceptor {\n    constructor(injector) {\n        this.injector = injector;\n    }\n    /**\n     * Identifies and handles a given JSONP request.\n     * @param initialRequest The outgoing request object to handle.\n     * @param next The next interceptor in the chain, or the backend\n     * if no interceptors remain in the chain.\n     * @returns An observable of the event stream.\n     */\n    intercept(initialRequest, next) {\n        return this.injector.runInContext(() => jsonpInterceptorFn(initialRequest, downstreamRequest => next.handle(downstreamRequest)));\n    }\n}\nJsonpInterceptor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: JsonpInterceptor, deps: [{ token: i0.EnvironmentInjector }], target: i0.ɵɵFactoryTarget.Injectable });\nJsonpInterceptor.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: JsonpInterceptor });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: JsonpInterceptor, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: i0.EnvironmentInjector }]; } });\n\nconst XSSI_PREFIX = /^\\)\\]\\}',?\\n/;\n/**\n * Determine an appropriate URL for the response, by checking either\n * XMLHttpRequest.responseURL or the X-Request-URL header.\n */\nfunction getResponseUrl(xhr) {\n    if ('responseURL' in xhr && xhr.responseURL) {\n        return xhr.responseURL;\n    }\n    if (/^X-Request-URL:/m.test(xhr.getAllResponseHeaders())) {\n        return xhr.getResponseHeader('X-Request-URL');\n    }\n    return null;\n}\n/**\n * Uses `XMLHttpRequest` to send requests to a backend server.\n * @see {@link HttpHandler}\n * @see {@link JsonpClientBackend}\n *\n * @publicApi\n */\nclass HttpXhrBackend {\n    constructor(xhrFactory) {\n        this.xhrFactory = xhrFactory;\n    }\n    /**\n     * Processes a request and returns a stream of response events.\n     * @param req The request object.\n     * @returns An observable of the response events.\n     */\n    handle(req) {\n        // Quick check to give a better error message when a user attempts to use\n        // HttpClient.jsonp() without installing the HttpClientJsonpModule\n        if (req.method === 'JSONP') {\n            throw new Error(`Attempted to construct Jsonp request without HttpClientJsonpModule installed.`);\n        }\n        // Everything happens on Observable subscription.\n        return new Observable((observer) => {\n            // Start by setting up the XHR object with request method, URL, and withCredentials flag.\n            const xhr = this.xhrFactory.build();\n            xhr.open(req.method, req.urlWithParams);\n            if (!!req.withCredentials) {\n                xhr.withCredentials = true;\n            }\n            // Add all the requested headers.\n            req.headers.forEach((name, values) => xhr.setRequestHeader(name, values.join(',')));\n            // Add an Accept header if one isn't present already.\n            if (!req.headers.has('Accept')) {\n                xhr.setRequestHeader('Accept', 'application/json, text/plain, */*');\n            }\n            // Auto-detect the Content-Type header if one isn't present already.\n            if (!req.headers.has('Content-Type')) {\n                const detectedType = req.detectContentTypeHeader();\n                // Sometimes Content-Type detection fails.\n                if (detectedType !== null) {\n                    xhr.setRequestHeader('Content-Type', detectedType);\n                }\n            }\n            // Set the responseType if one was requested.\n            if (req.responseType) {\n                const responseType = req.responseType.toLowerCase();\n                // JSON responses need to be processed as text. This is because if the server\n                // returns an XSSI-prefixed JSON response, the browser will fail to parse it,\n                // xhr.response will be null, and xhr.responseText cannot be accessed to\n                // retrieve the prefixed JSON data in order to strip the prefix. Thus, all JSON\n                // is parsed by first requesting text and then applying JSON.parse.\n                xhr.responseType = ((responseType !== 'json') ? responseType : 'text');\n            }\n            // Serialize the request body if one is present. If not, this will be set to null.\n            const reqBody = req.serializeBody();\n            // If progress events are enabled, response headers will be delivered\n            // in two events - the HttpHeaderResponse event and the full HttpResponse\n            // event. However, since response headers don't change in between these\n            // two events, it doesn't make sense to parse them twice. So headerResponse\n            // caches the data extracted from the response whenever it's first parsed,\n            // to ensure parsing isn't duplicated.\n            let headerResponse = null;\n            // partialFromXhr extracts the HttpHeaderResponse from the current XMLHttpRequest\n            // state, and memoizes it into headerResponse.\n            const partialFromXhr = () => {\n                if (headerResponse !== null) {\n                    return headerResponse;\n                }\n                const statusText = xhr.statusText || 'OK';\n                // Parse headers from XMLHttpRequest - this step is lazy.\n                const headers = new HttpHeaders(xhr.getAllResponseHeaders());\n                // Read the response URL from the XMLHttpResponse instance and fall back on the\n                // request URL.\n                const url = getResponseUrl(xhr) || req.url;\n                // Construct the HttpHeaderResponse and memoize it.\n                headerResponse = new HttpHeaderResponse({ headers, status: xhr.status, statusText, url });\n                return headerResponse;\n            };\n            // Next, a few closures are defined for the various events which XMLHttpRequest can\n            // emit. This allows them to be unregistered as event listeners later.\n            // First up is the load event, which represents a response being fully available.\n            const onLoad = () => {\n                // Read response state from the memoized partial data.\n                let { headers, status, statusText, url } = partialFromXhr();\n                // The body will be read out if present.\n                let body = null;\n                if (status !== 204 /* HttpStatusCode.NoContent */) {\n                    // Use XMLHttpRequest.response if set, responseText otherwise.\n                    body = (typeof xhr.response === 'undefined') ? xhr.responseText : xhr.response;\n                }\n                // Normalize another potential bug (this one comes from CORS).\n                if (status === 0) {\n                    status = !!body ? 200 /* HttpStatusCode.Ok */ : 0;\n                }\n                // ok determines whether the response will be transmitted on the event or\n                // error channel. Unsuccessful status codes (not 2xx) will always be errors,\n                // but a successful status code can still result in an error if the user\n                // asked for JSON data and the body cannot be parsed as such.\n                let ok = status >= 200 && status < 300;\n                // Check whether the body needs to be parsed as JSON (in many cases the browser\n                // will have done that already).\n                if (req.responseType === 'json' && typeof body === 'string') {\n                    // Save the original body, before attempting XSSI prefix stripping.\n                    const originalBody = body;\n                    body = body.replace(XSSI_PREFIX, '');\n                    try {\n                        // Attempt the parse. If it fails, a parse error should be delivered to the user.\n                        body = body !== '' ? JSON.parse(body) : null;\n                    }\n                    catch (error) {\n                        // Since the JSON.parse failed, it's reasonable to assume this might not have been a\n                        // JSON response. Restore the original body (including any XSSI prefix) to deliver\n                        // a better error response.\n                        body = originalBody;\n                        // If this was an error request to begin with, leave it as a string, it probably\n                        // just isn't JSON. Otherwise, deliver the parsing error to the user.\n                        if (ok) {\n                            // Even though the response status was 2xx, this is still an error.\n                            ok = false;\n                            // The parse error contains the text of the body that failed to parse.\n                            body = { error, text: body };\n                        }\n                    }\n                }\n                if (ok) {\n                    // A successful response is delivered on the event stream.\n                    observer.next(new HttpResponse({\n                        body,\n                        headers,\n                        status,\n                        statusText,\n                        url: url || undefined,\n                    }));\n                    // The full body has been received and delivered, no further events\n                    // are possible. This request is complete.\n                    observer.complete();\n                }\n                else {\n                    // An unsuccessful request is delivered on the error channel.\n                    observer.error(new HttpErrorResponse({\n                        // The error in this case is the response body (error from the server).\n                        error: body,\n                        headers,\n                        status,\n                        statusText,\n                        url: url || undefined,\n                    }));\n                }\n            };\n            // The onError callback is called when something goes wrong at the network level.\n            // Connection timeout, DNS error, offline, etc. These are actual errors, and are\n            // transmitted on the error channel.\n            const onError = (error) => {\n                const { url } = partialFromXhr();\n                const res = new HttpErrorResponse({\n                    error,\n                    status: xhr.status || 0,\n                    statusText: xhr.statusText || 'Unknown Error',\n                    url: url || undefined,\n                });\n                observer.error(res);\n            };\n            // The sentHeaders flag tracks whether the HttpResponseHeaders event\n            // has been sent on the stream. This is necessary to track if progress\n            // is enabled since the event will be sent on only the first download\n            // progress event.\n            let sentHeaders = false;\n            // The download progress event handler, which is only registered if\n            // progress events are enabled.\n            const onDownProgress = (event) => {\n                // Send the HttpResponseHeaders event if it hasn't been sent already.\n                if (!sentHeaders) {\n                    observer.next(partialFromXhr());\n                    sentHeaders = true;\n                }\n                // Start building the download progress event to deliver on the response\n                // event stream.\n                let progressEvent = {\n                    type: HttpEventType.DownloadProgress,\n                    loaded: event.loaded,\n                };\n                // Set the total number of bytes in the event if it's available.\n                if (event.lengthComputable) {\n                    progressEvent.total = event.total;\n                }\n                // If the request was for text content and a partial response is\n                // available on XMLHttpRequest, include it in the progress event\n                // to allow for streaming reads.\n                if (req.responseType === 'text' && !!xhr.responseText) {\n                    progressEvent.partialText = xhr.responseText;\n                }\n                // Finally, fire the event.\n                observer.next(progressEvent);\n            };\n            // The upload progress event handler, which is only registered if\n            // progress events are enabled.\n            const onUpProgress = (event) => {\n                // Upload progress events are simpler. Begin building the progress\n                // event.\n                let progress = {\n                    type: HttpEventType.UploadProgress,\n                    loaded: event.loaded,\n                };\n                // If the total number of bytes being uploaded is available, include\n                // it.\n                if (event.lengthComputable) {\n                    progress.total = event.total;\n                }\n                // Send the event.\n                observer.next(progress);\n            };\n            // By default, register for load and error events.\n            xhr.addEventListener('load', onLoad);\n            xhr.addEventListener('error', onError);\n            xhr.addEventListener('timeout', onError);\n            xhr.addEventListener('abort', onError);\n            // Progress events are only enabled if requested.\n            if (req.reportProgress) {\n                // Download progress is always enabled if requested.\n                xhr.addEventListener('progress', onDownProgress);\n                // Upload progress depends on whether there is a body to upload.\n                if (reqBody !== null && xhr.upload) {\n                    xhr.upload.addEventListener('progress', onUpProgress);\n                }\n            }\n            // Fire the request, and notify the event stream that it was fired.\n            xhr.send(reqBody);\n            observer.next({ type: HttpEventType.Sent });\n            // This is the return from the Observable function, which is the\n            // request cancellation handler.\n            return () => {\n                // On a cancellation, remove all registered event listeners.\n                xhr.removeEventListener('error', onError);\n                xhr.removeEventListener('abort', onError);\n                xhr.removeEventListener('load', onLoad);\n                xhr.removeEventListener('timeout', onError);\n                if (req.reportProgress) {\n                    xhr.removeEventListener('progress', onDownProgress);\n                    if (reqBody !== null && xhr.upload) {\n                        xhr.upload.removeEventListener('progress', onUpProgress);\n                    }\n                }\n                // Finally, abort the in-flight request.\n                if (xhr.readyState !== xhr.DONE) {\n                    xhr.abort();\n                }\n            };\n        });\n    }\n}\nHttpXhrBackend.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpXhrBackend, deps: [{ token: i1.XhrFactory }], target: i0.ɵɵFactoryTarget.Injectable });\nHttpXhrBackend.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpXhrBackend });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpXhrBackend, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: i1.XhrFactory }]; } });\n\nconst XSRF_ENABLED = new InjectionToken('XSRF_ENABLED');\nconst XSRF_DEFAULT_COOKIE_NAME = 'XSRF-TOKEN';\nconst XSRF_COOKIE_NAME = new InjectionToken('XSRF_COOKIE_NAME', {\n    providedIn: 'root',\n    factory: () => XSRF_DEFAULT_COOKIE_NAME,\n});\nconst XSRF_DEFAULT_HEADER_NAME = 'X-XSRF-TOKEN';\nconst XSRF_HEADER_NAME = new InjectionToken('XSRF_HEADER_NAME', {\n    providedIn: 'root',\n    factory: () => XSRF_DEFAULT_HEADER_NAME,\n});\n/**\n * Retrieves the current XSRF token to use with the next outgoing request.\n *\n * @publicApi\n */\nclass HttpXsrfTokenExtractor {\n}\n/**\n * `HttpXsrfTokenExtractor` which retrieves the token from a cookie.\n */\nclass HttpXsrfCookieExtractor {\n    constructor(doc, platform, cookieName) {\n        this.doc = doc;\n        this.platform = platform;\n        this.cookieName = cookieName;\n        this.lastCookieString = '';\n        this.lastToken = null;\n        /**\n         * @internal for testing\n         */\n        this.parseCount = 0;\n    }\n    getToken() {\n        if (this.platform === 'server') {\n            return null;\n        }\n        const cookieString = this.doc.cookie || '';\n        if (cookieString !== this.lastCookieString) {\n            this.parseCount++;\n            this.lastToken = ɵparseCookieValue(cookieString, this.cookieName);\n            this.lastCookieString = cookieString;\n        }\n        return this.lastToken;\n    }\n}\nHttpXsrfCookieExtractor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpXsrfCookieExtractor, deps: [{ token: DOCUMENT }, { token: PLATFORM_ID }, { token: XSRF_COOKIE_NAME }], target: i0.ɵɵFactoryTarget.Injectable });\nHttpXsrfCookieExtractor.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpXsrfCookieExtractor });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpXsrfCookieExtractor, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [PLATFORM_ID]\n                }] }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [XSRF_COOKIE_NAME]\n                }] }]; } });\nfunction xsrfInterceptorFn(req, next) {\n    const lcUrl = req.url.toLowerCase();\n    // Skip both non-mutating requests and absolute URLs.\n    // Non-mutating requests don't require a token, and absolute URLs require special handling\n    // anyway as the cookie set\n    // on our origin is not the same as the token expected by another origin.\n    if (!inject(XSRF_ENABLED) || req.method === 'GET' || req.method === 'HEAD' ||\n        lcUrl.startsWith('http://') || lcUrl.startsWith('https://')) {\n        return next(req);\n    }\n    const token = inject(HttpXsrfTokenExtractor).getToken();\n    const headerName = inject(XSRF_HEADER_NAME);\n    // Be careful not to overwrite an existing header of the same name.\n    if (token != null && !req.headers.has(headerName)) {\n        req = req.clone({ headers: req.headers.set(headerName, token) });\n    }\n    return next(req);\n}\n/**\n * `HttpInterceptor` which adds an XSRF token to eligible outgoing requests.\n */\nclass HttpXsrfInterceptor {\n    constructor(injector) {\n        this.injector = injector;\n    }\n    intercept(initialRequest, next) {\n        return this.injector.runInContext(() => xsrfInterceptorFn(initialRequest, downstreamRequest => next.handle(downstreamRequest)));\n    }\n}\nHttpXsrfInterceptor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpXsrfInterceptor, deps: [{ token: i0.EnvironmentInjector }], target: i0.ɵɵFactoryTarget.Injectable });\nHttpXsrfInterceptor.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpXsrfInterceptor });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpXsrfInterceptor, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: i0.EnvironmentInjector }]; } });\n\n/**\n * Identifies a particular kind of `HttpFeature`.\n *\n * @publicApi\n */\nvar HttpFeatureKind;\n(function (HttpFeatureKind) {\n    HttpFeatureKind[HttpFeatureKind[\"Interceptors\"] = 0] = \"Interceptors\";\n    HttpFeatureKind[HttpFeatureKind[\"LegacyInterceptors\"] = 1] = \"LegacyInterceptors\";\n    HttpFeatureKind[HttpFeatureKind[\"CustomXsrfConfiguration\"] = 2] = \"CustomXsrfConfiguration\";\n    HttpFeatureKind[HttpFeatureKind[\"NoXsrfProtection\"] = 3] = \"NoXsrfProtection\";\n    HttpFeatureKind[HttpFeatureKind[\"JsonpSupport\"] = 4] = \"JsonpSupport\";\n    HttpFeatureKind[HttpFeatureKind[\"RequestsMadeViaParent\"] = 5] = \"RequestsMadeViaParent\";\n})(HttpFeatureKind || (HttpFeatureKind = {}));\nfunction makeHttpFeature(kind, providers) {\n    return {\n        ɵkind: kind,\n        ɵproviders: providers,\n    };\n}\n/**\n * Configures Angular's `HttpClient` service to be available for injection.\n *\n * By default, `HttpClient` will be configured for injection with its default options for XSRF\n * protection of outgoing requests. Additional configuration options can be provided by passing\n * feature functions to `provideHttpClient`. For example, HTTP interceptors can be added using the\n * `withInterceptors(...)` feature.\n *\n * @see {@link withInterceptors}\n * @see {@link withInterceptorsFromDi}\n * @see {@link withXsrfConfiguration}\n * @see {@link withNoXsrfProtection}\n * @see {@link withJsonpSupport}\n * @see {@link withRequestsMadeViaParent}\n */\nfunction provideHttpClient(...features) {\n    if (ngDevMode) {\n        const featureKinds = new Set(features.map(f => f.ɵkind));\n        if (featureKinds.has(HttpFeatureKind.NoXsrfProtection) &&\n            featureKinds.has(HttpFeatureKind.CustomXsrfConfiguration)) {\n            throw new Error(ngDevMode ?\n                `Configuration error: found both withXsrfConfiguration() and withNoXsrfProtection() in the same call to provideHttpClient(), which is a contradiction.` :\n                '');\n        }\n    }\n    const providers = [\n        HttpClient,\n        HttpXhrBackend,\n        HttpInterceptorHandler,\n        { provide: HttpHandler, useExisting: HttpInterceptorHandler },\n        { provide: HttpBackend, useExisting: HttpXhrBackend },\n        {\n            provide: HTTP_INTERCEPTOR_FNS,\n            useValue: xsrfInterceptorFn,\n            multi: true,\n        },\n        { provide: XSRF_ENABLED, useValue: true },\n        { provide: HttpXsrfTokenExtractor, useClass: HttpXsrfCookieExtractor },\n    ];\n    for (const feature of features) {\n        providers.push(...feature.ɵproviders);\n    }\n    return makeEnvironmentProviders(providers);\n}\n/**\n * Adds one or more functional-style HTTP interceptors to the configuration of the `HttpClient`\n * instance.\n *\n * @see {@link HttpInterceptorFn}\n * @see {@link provideHttpClient}\n * @publicApi\n */\nfunction withInterceptors(interceptorFns) {\n    return makeHttpFeature(HttpFeatureKind.Interceptors, interceptorFns.map(interceptorFn => {\n        return {\n            provide: HTTP_INTERCEPTOR_FNS,\n            useValue: interceptorFn,\n            multi: true,\n        };\n    }));\n}\nconst LEGACY_INTERCEPTOR_FN = new InjectionToken('LEGACY_INTERCEPTOR_FN');\n/**\n * Includes class-based interceptors configured using a multi-provider in the current injector into\n * the configured `HttpClient` instance.\n *\n * Prefer `withInterceptors` and functional interceptors instead, as support for DI-provided\n * interceptors may be phased out in a later release.\n *\n * @see {@link HttpInterceptor}\n * @see {@link HTTP_INTERCEPTORS}\n * @see {@link provideHttpClient}\n */\nfunction withInterceptorsFromDi() {\n    // Note: the legacy interceptor function is provided here via an intermediate token\n    // (`LEGACY_INTERCEPTOR_FN`), using a pattern which guarantees that if these providers are\n    // included multiple times, all of the multi-provider entries will have the same instance of the\n    // interceptor function. That way, the `HttpINterceptorHandler` will dedup them and legacy\n    // interceptors will not run multiple times.\n    return makeHttpFeature(HttpFeatureKind.LegacyInterceptors, [\n        {\n            provide: LEGACY_INTERCEPTOR_FN,\n            useFactory: legacyInterceptorFnFactory,\n        },\n        {\n            provide: HTTP_INTERCEPTOR_FNS,\n            useExisting: LEGACY_INTERCEPTOR_FN,\n            multi: true,\n        }\n    ]);\n}\n/**\n * Customizes the XSRF protection for the configuration of the current `HttpClient` instance.\n *\n * This feature is incompatible with the `withNoXsrfProtection` feature.\n *\n * @see {@link provideHttpClient}\n */\nfunction withXsrfConfiguration({ cookieName, headerName }) {\n    const providers = [];\n    if (cookieName !== undefined) {\n        providers.push({ provide: XSRF_COOKIE_NAME, useValue: cookieName });\n    }\n    if (headerName !== undefined) {\n        providers.push({ provide: XSRF_HEADER_NAME, useValue: headerName });\n    }\n    return makeHttpFeature(HttpFeatureKind.CustomXsrfConfiguration, providers);\n}\n/**\n * Disables XSRF protection in the configuration of the current `HttpClient` instance.\n *\n * This feature is incompatible with the `withXsrfConfiguration` feature.\n *\n * @see {@link provideHttpClient}\n */\nfunction withNoXsrfProtection() {\n    return makeHttpFeature(HttpFeatureKind.NoXsrfProtection, [\n        {\n            provide: XSRF_ENABLED,\n            useValue: false,\n        },\n    ]);\n}\n/**\n * Add JSONP support to the configuration of the current `HttpClient` instance.\n *\n * @see {@link provideHttpClient}\n */\nfunction withJsonpSupport() {\n    return makeHttpFeature(HttpFeatureKind.JsonpSupport, [\n        JsonpClientBackend,\n        { provide: JsonpCallbackContext, useFactory: jsonpCallbackContext },\n        { provide: HTTP_INTERCEPTOR_FNS, useValue: jsonpInterceptorFn, multi: true },\n    ]);\n}\n/**\n * Configures the current `HttpClient` instance to make requests via the parent injector's\n * `HttpClient` instead of directly.\n *\n * By default, `provideHttpClient` configures `HttpClient` in its injector to be an independent\n * instance. For example, even if `HttpClient` is configured in the parent injector with\n * one or more interceptors, they will not intercept requests made via this instance.\n *\n * With this option enabled, once the request has passed through the current injector's\n * interceptors, it will be delegated to the parent injector's `HttpClient` chain instead of\n * dispatched directly, and interceptors in the parent configuration will be applied to the request.\n *\n * If there are several `HttpClient` instances in the injector hierarchy, it's possible for\n * `withRequestsMadeViaParent` to be used at multiple levels, which will cause the request to\n * \"bubble up\" until either reaching the root level or an `HttpClient` which was not configured with\n * this option.\n *\n * @see {@link provideHttpClient}\n * @developerPreview\n */\nfunction withRequestsMadeViaParent() {\n    return makeHttpFeature(HttpFeatureKind.RequestsMadeViaParent, [\n        {\n            provide: HttpBackend,\n            useFactory: () => {\n                const handlerFromParent = inject(HttpHandler, { skipSelf: true, optional: true });\n                if (ngDevMode && handlerFromParent === null) {\n                    throw new Error('withRequestsMadeViaParent() can only be used when the parent injector also configures HttpClient');\n                }\n                return handlerFromParent;\n            },\n        },\n    ]);\n}\n\n/**\n * Configures XSRF protection support for outgoing requests.\n *\n * For a server that supports a cookie-based XSRF protection system,\n * use directly to configure XSRF protection with the correct\n * cookie and header names.\n *\n * If no names are supplied, the default cookie name is `XSRF-TOKEN`\n * and the default header name is `X-XSRF-TOKEN`.\n *\n * @publicApi\n */\nclass HttpClientXsrfModule {\n    /**\n     * Disable the default XSRF protection.\n     */\n    static disable() {\n        return {\n            ngModule: HttpClientXsrfModule,\n            providers: [\n                withNoXsrfProtection().ɵproviders,\n            ],\n        };\n    }\n    /**\n     * Configure XSRF protection.\n     * @param options An object that can specify either or both\n     * cookie name or header name.\n     * - Cookie name default is `XSRF-TOKEN`.\n     * - Header name default is `X-XSRF-TOKEN`.\n     *\n     */\n    static withOptions(options = {}) {\n        return {\n            ngModule: HttpClientXsrfModule,\n            providers: withXsrfConfiguration(options).ɵproviders,\n        };\n    }\n}\nHttpClientXsrfModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpClientXsrfModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nHttpClientXsrfModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpClientXsrfModule });\nHttpClientXsrfModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpClientXsrfModule, providers: [\n        HttpXsrfInterceptor,\n        { provide: HTTP_INTERCEPTORS, useExisting: HttpXsrfInterceptor, multi: true },\n        { provide: HttpXsrfTokenExtractor, useClass: HttpXsrfCookieExtractor },\n        withXsrfConfiguration({\n            cookieName: XSRF_DEFAULT_COOKIE_NAME,\n            headerName: XSRF_DEFAULT_HEADER_NAME,\n        }).ɵproviders,\n        { provide: XSRF_ENABLED, useValue: true },\n    ] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpClientXsrfModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    providers: [\n                        HttpXsrfInterceptor,\n                        { provide: HTTP_INTERCEPTORS, useExisting: HttpXsrfInterceptor, multi: true },\n                        { provide: HttpXsrfTokenExtractor, useClass: HttpXsrfCookieExtractor },\n                        withXsrfConfiguration({\n                            cookieName: XSRF_DEFAULT_COOKIE_NAME,\n                            headerName: XSRF_DEFAULT_HEADER_NAME,\n                        }).ɵproviders,\n                        { provide: XSRF_ENABLED, useValue: true },\n                    ],\n                }]\n        }] });\n/**\n * Configures the [dependency injector](guide/glossary#injector) for `HttpClient`\n * with supporting services for XSRF. Automatically imported by `HttpClientModule`.\n *\n * You can add interceptors to the chain behind `HttpClient` by binding them to the\n * multiprovider for built-in [DI token](guide/glossary#di-token) `HTTP_INTERCEPTORS`.\n *\n * @publicApi\n */\nclass HttpClientModule {\n}\nHttpClientModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpClientModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nHttpClientModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpClientModule });\nHttpClientModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpClientModule, providers: [\n        provideHttpClient(withInterceptorsFromDi()),\n    ] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpClientModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    /**\n                     * Configures the [dependency injector](guide/glossary#injector) where it is imported\n                     * with supporting services for HTTP communications.\n                     */\n                    providers: [\n                        provideHttpClient(withInterceptorsFromDi()),\n                    ],\n                }]\n        }] });\n/**\n * Configures the [dependency injector](guide/glossary#injector) for `HttpClient`\n * with supporting services for JSONP.\n * Without this module, Jsonp requests reach the backend\n * with method JSONP, where they are rejected.\n *\n * @publicApi\n */\nclass HttpClientJsonpModule {\n}\nHttpClientJsonpModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpClientJsonpModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nHttpClientJsonpModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpClientJsonpModule });\nHttpClientJsonpModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpClientJsonpModule, providers: [\n        withJsonpSupport().ɵproviders,\n    ] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: HttpClientJsonpModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    providers: [\n                        withJsonpSupport().ɵproviders,\n                    ],\n                }]\n        }] });\n\n/**\n * A wrapper around the `XMLHttpRequest` constructor.\n *\n * @publicApi\n * @see `XhrFactory`\n * @deprecated\n * `XhrFactory` has moved, please import `XhrFactory` from `@angular/common` instead.\n */\nconst XhrFactory = XhrFactory$1;\n\n// This file is not used to build this module. It is only used during editing\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { HTTP_INTERCEPTORS, HttpBackend, HttpClient, HttpClientJsonpModule, HttpClientModule, HttpClientXsrfModule, HttpContext, HttpContextToken, HttpErrorResponse, HttpEventType, HttpFeatureKind, HttpHandler, HttpHeaderResponse, HttpHeaders, HttpParams, HttpRequest, HttpResponse, HttpResponseBase, HttpUrlEncodingCodec, HttpXhrBackend, HttpXsrfTokenExtractor, JsonpClientBackend, JsonpInterceptor, XhrFactory, provideHttpClient, withInterceptors, withInterceptorsFromDi, withJsonpSupport, withNoXsrfProtection, withRequestsMadeViaParent, withXsrfConfiguration, HttpInterceptorHandler as ɵHttpInterceptingHandler, HttpInterceptorHandler as ɵHttpInterceptorHandler };\n","import { connectableObservableDescriptor } from '../observable/ConnectableObservable';\nexport function multicast(subjectOrSubjectFactory, selector) {\n    return function multicastOperatorFunction(source) {\n        let subjectFactory;\n        if (typeof subjectOrSubjectFactory === 'function') {\n            subjectFactory = subjectOrSubjectFactory;\n        }\n        else {\n            subjectFactory = function subjectFactory() {\n                return subjectOrSubjectFactory;\n            };\n        }\n        if (typeof selector === 'function') {\n            return source.lift(new MulticastOperator(subjectFactory, selector));\n        }\n        const connectable = Object.create(source, connectableObservableDescriptor);\n        connectable.source = source;\n        connectable.subjectFactory = subjectFactory;\n        return connectable;\n    };\n}\nexport class MulticastOperator {\n    constructor(subjectFactory, selector) {\n        this.subjectFactory = subjectFactory;\n        this.selector = selector;\n    }\n    call(subscriber, source) {\n        const { selector } = this;\n        const subject = this.subjectFactory();\n        const subscription = selector(subject).subscribe(subscriber);\n        subscription.add(source.subscribe(subject));\n        return subscription;\n    }\n}\n","import { multicast } from './multicast';\nimport { refCount } from './refCount';\nimport { Subject } from '../Subject';\nfunction shareSubjectFactory() {\n    return new Subject();\n}\nexport function share() {\n    return (source) => refCount()(multicast(shareSubjectFactory)(source));\n}\n","/**\n * @license Angular v15.2.10\n * (c) 2010-2022 Google LLC. https://angular.io/\n * License: MIT\n */\n\nimport { Subject, Subscription, Observable, merge as merge$1 } from 'rxjs';\nimport { share } from 'rxjs/operators';\n\nfunction getClosureSafeProperty(objWithPropertyToExtract) {\n    for (let key in objWithPropertyToExtract) {\n        if (objWithPropertyToExtract[key] === getClosureSafeProperty) {\n            return key;\n        }\n    }\n    throw Error('Could not find renamed property on target object.');\n}\n/**\n * Sets properties on a target object from a source object, but only if\n * the property doesn't already exist on the target object.\n * @param target The target to set properties on\n * @param source The source of the property keys and values to set\n */\nfunction fillProperties(target, source) {\n    for (const key in source) {\n        if (source.hasOwnProperty(key) && !target.hasOwnProperty(key)) {\n            target[key] = source[key];\n        }\n    }\n}\n\nfunction stringify(token) {\n    if (typeof token === 'string') {\n        return token;\n    }\n    if (Array.isArray(token)) {\n        return '[' + token.map(stringify).join(', ') + ']';\n    }\n    if (token == null) {\n        return '' + token;\n    }\n    if (token.overriddenName) {\n        return `${token.overriddenName}`;\n    }\n    if (token.name) {\n        return `${token.name}`;\n    }\n    const res = token.toString();\n    if (res == null) {\n        return '' + res;\n    }\n    const newLineIndex = res.indexOf('\\n');\n    return newLineIndex === -1 ? res : res.substring(0, newLineIndex);\n}\n/**\n * Concatenates two strings with separator, allocating new strings only when necessary.\n *\n * @param before before string.\n * @param separator separator string.\n * @param after after string.\n * @returns concatenated string.\n */\nfunction concatStringsWithSpace(before, after) {\n    return (before == null || before === '') ?\n        (after === null ? '' : after) :\n        ((after == null || after === '') ? before : before + ' ' + after);\n}\n\nconst __forward_ref__ = getClosureSafeProperty({ __forward_ref__: getClosureSafeProperty });\n/**\n * Allows to refer to references which are not yet defined.\n *\n * For instance, `forwardRef` is used when the `token` which we need to refer to for the purposes of\n * DI is declared, but not yet defined. It is also used when the `token` which we use when creating\n * a query is not yet defined.\n *\n * @usageNotes\n * ### Example\n * {@example core/di/ts/forward_ref/forward_ref_spec.ts region='forward_ref'}\n * @publicApi\n */\nfunction forwardRef(forwardRefFn) {\n    forwardRefFn.__forward_ref__ = forwardRef;\n    forwardRefFn.toString = function () {\n        return stringify(this());\n    };\n    return forwardRefFn;\n}\n/**\n * Lazily retrieves the reference value from a forwardRef.\n *\n * Acts as the identity function when given a non-forward-ref value.\n *\n * @usageNotes\n * ### Example\n *\n * {@example core/di/ts/forward_ref/forward_ref_spec.ts region='resolve_forward_ref'}\n *\n * @see `forwardRef`\n * @publicApi\n */\nfunction resolveForwardRef(type) {\n    return isForwardRef(type) ? type() : type;\n}\n/** Checks whether a function is wrapped by a `forwardRef`. */\nfunction isForwardRef(fn) {\n    return typeof fn === 'function' && fn.hasOwnProperty(__forward_ref__) &&\n        fn.__forward_ref__ === forwardRef;\n}\n\nfunction isEnvironmentProviders(value) {\n    return value && !!value.ɵproviders;\n}\n\n/**\n * Base URL for the error details page.\n *\n * Keep this constant in sync across:\n *  - packages/compiler-cli/src/ngtsc/diagnostics/src/error_details_base_url.ts\n *  - packages/core/src/error_details_base_url.ts\n */\nconst ERROR_DETAILS_PAGE_BASE_URL = 'https://angular.io/errors';\n/**\n * URL for the XSS security documentation.\n */\nconst XSS_SECURITY_URL = 'https://g.co/ng/security#xss';\n\n/**\n * Class that represents a runtime error.\n * Formats and outputs the error message in a consistent way.\n *\n * Example:\n * ```\n *  throw new RuntimeError(\n *    RuntimeErrorCode.INJECTOR_ALREADY_DESTROYED,\n *    ngDevMode && 'Injector has already been destroyed.');\n * ```\n *\n * Note: the `message` argument contains a descriptive error message as a string in development\n * mode (when the `ngDevMode` is defined). In production mode (after tree-shaking pass), the\n * `message` argument becomes `false`, thus we account for it in the typings and the runtime logic.\n */\nclass RuntimeError extends Error {\n    constructor(code, message) {\n        super(formatRuntimeError(code, message));\n        this.code = code;\n    }\n}\n/**\n * Called to format a runtime error.\n * See additional info on the `message` argument type in the `RuntimeError` class description.\n */\nfunction formatRuntimeError(code, message) {\n    // Error code might be a negative number, which is a special marker that instructs the logic to\n    // generate a link to the error details page on angular.io.\n    // We also prepend `0` to non-compile-time errors.\n    const fullCode = `NG0${Math.abs(code)}`;\n    let errorMessage = `${fullCode}${message ? ': ' + message.trim() : ''}`;\n    if (ngDevMode && code < 0) {\n        const addPeriodSeparator = !errorMessage.match(/[.,;!?]$/);\n        const separator = addPeriodSeparator ? '.' : '';\n        errorMessage =\n            `${errorMessage}${separator} Find more at ${ERROR_DETAILS_PAGE_BASE_URL}/${fullCode}`;\n    }\n    return errorMessage;\n}\n\n/**\n * Used for stringify render output in Ivy.\n * Important! This function is very performance-sensitive and we should\n * be extra careful not to introduce megamorphic reads in it.\n * Check `core/test/render3/perf/render_stringify` for benchmarks and alternate implementations.\n */\nfunction renderStringify(value) {\n    if (typeof value === 'string')\n        return value;\n    if (value == null)\n        return '';\n    // Use `String` so that it invokes the `toString` method of the value. Note that this\n    // appears to be faster than calling `value.toString` (see `render_stringify` benchmark).\n    return String(value);\n}\n/**\n * Used to stringify a value so that it can be displayed in an error message.\n * Important! This function contains a megamorphic read and should only be\n * used for error messages.\n */\nfunction stringifyForError(value) {\n    if (typeof value === 'function')\n        return value.name || value.toString();\n    if (typeof value === 'object' && value != null && typeof value.type === 'function') {\n        return value.type.name || value.type.toString();\n    }\n    return renderStringify(value);\n}\n\n/** Called when directives inject each other (creating a circular dependency) */\nfunction throwCyclicDependencyError(token, path) {\n    const depPath = path ? `. Dependency path: ${path.join(' > ')} > ${token}` : '';\n    throw new RuntimeError(-200 /* RuntimeErrorCode.CYCLIC_DI_DEPENDENCY */, `Circular dependency in DI detected for ${token}${depPath}`);\n}\nfunction throwMixedMultiProviderError() {\n    throw new Error(`Cannot mix multi providers and regular providers`);\n}\nfunction throwInvalidProviderError(ngModuleType, providers, provider) {\n    if (ngModuleType && providers) {\n        const providerDetail = providers.map(v => v == provider ? '?' + provider + '?' : '...');\n        throw new Error(`Invalid provider for the NgModule '${stringify(ngModuleType)}' - only instances of Provider and Type are allowed, got: [${providerDetail.join(', ')}]`);\n    }\n    else if (isEnvironmentProviders(provider)) {\n        if (provider.ɵfromNgModule) {\n            throw new RuntimeError(207 /* RuntimeErrorCode.PROVIDER_IN_WRONG_CONTEXT */, `Invalid providers from 'importProvidersFrom' present in a non-environment injector. 'importProvidersFrom' can't be used for component providers.`);\n        }\n        else {\n            throw new RuntimeError(207 /* RuntimeErrorCode.PROVIDER_IN_WRONG_CONTEXT */, `Invalid providers present in a non-environment injector. 'EnvironmentProviders' can't be used for component providers.`);\n        }\n    }\n    else {\n        throw new Error('Invalid provider');\n    }\n}\n/** Throws an error when a token is not found in DI. */\nfunction throwProviderNotFoundError(token, injectorName) {\n    const injectorDetails = injectorName ? ` in ${injectorName}` : '';\n    throw new RuntimeError(-201 /* RuntimeErrorCode.PROVIDER_NOT_FOUND */, ngDevMode && `No provider for ${stringifyForError(token)} found${injectorDetails}`);\n}\n\n// The functions in this file verify that the assumptions we are making\nfunction assertNumber(actual, msg) {\n    if (!(typeof actual === 'number')) {\n        throwError(msg, typeof actual, 'number', '===');\n    }\n}\nfunction assertNumberInRange(actual, minInclusive, maxInclusive) {\n    assertNumber(actual, 'Expected a number');\n    assertLessThanOrEqual(actual, maxInclusive, 'Expected number to be less than or equal to');\n    assertGreaterThanOrEqual(actual, minInclusive, 'Expected number to be greater than or equal to');\n}\nfunction assertString(actual, msg) {\n    if (!(typeof actual === 'string')) {\n        throwError(msg, actual === null ? 'null' : typeof actual, 'string', '===');\n    }\n}\nfunction assertFunction(actual, msg) {\n    if (!(typeof actual === 'function')) {\n        throwError(msg, actual === null ? 'null' : typeof actual, 'function', '===');\n    }\n}\nfunction assertEqual(actual, expected, msg) {\n    if (!(actual == expected)) {\n        throwError(msg, actual, expected, '==');\n    }\n}\nfunction assertNotEqual(actual, expected, msg) {\n    if (!(actual != expected)) {\n        throwError(msg, actual, expected, '!=');\n    }\n}\nfunction assertSame(actual, expected, msg) {\n    if (!(actual === expected)) {\n        throwError(msg, actual, expected, '===');\n    }\n}\nfunction assertNotSame(actual, expected, msg) {\n    if (!(actual !== expected)) {\n        throwError(msg, actual, expected, '!==');\n    }\n}\nfunction assertLessThan(actual, expected, msg) {\n    if (!(actual < expected)) {\n        throwError(msg, actual, expected, '<');\n    }\n}\nfunction assertLessThanOrEqual(actual, expected, msg) {\n    if (!(actual <= expected)) {\n        throwError(msg, actual, expected, '<=');\n    }\n}\nfunction assertGreaterThan(actual, expected, msg) {\n    if (!(actual > expected)) {\n        throwError(msg, actual, expected, '>');\n    }\n}\nfunction assertGreaterThanOrEqual(actual, expected, msg) {\n    if (!(actual >= expected)) {\n        throwError(msg, actual, expected, '>=');\n    }\n}\nfunction assertNotDefined(actual, msg) {\n    if (actual != null) {\n        throwError(msg, actual, null, '==');\n    }\n}\nfunction assertDefined(actual, msg) {\n    if (actual == null) {\n        throwError(msg, actual, null, '!=');\n    }\n}\nfunction throwError(msg, actual, expected, comparison) {\n    throw new Error(`ASSERTION ERROR: ${msg}` +\n        (comparison == null ? '' : ` [Expected=> ${expected} ${comparison} ${actual} <=Actual]`));\n}\nfunction assertDomNode(node) {\n    // If we're in a worker, `Node` will not be defined.\n    if (!(typeof Node !== 'undefined' && node instanceof Node) &&\n        !(typeof node === 'object' && node != null &&\n            node.constructor.name === 'WebWorkerRenderNode')) {\n        throwError(`The provided value must be an instance of a DOM Node but got ${stringify(node)}`);\n    }\n}\nfunction assertIndexInRange(arr, index) {\n    assertDefined(arr, 'Array must be defined.');\n    const maxLen = arr.length;\n    if (index < 0 || index >= maxLen) {\n        throwError(`Index expected to be less than ${maxLen} but got ${index}`);\n    }\n}\nfunction assertOneOf(value, ...validValues) {\n    if (validValues.indexOf(value) !== -1)\n        return true;\n    throwError(`Expected value to be one of ${JSON.stringify(validValues)} but was ${JSON.stringify(value)}.`);\n}\n\n/**\n * Construct an injectable definition which defines how a token will be constructed by the DI\n * system, and in which injectors (if any) it will be available.\n *\n * This should be assigned to a static `ɵprov` field on a type, which will then be an\n * `InjectableType`.\n *\n * Options:\n * * `providedIn` determines which injectors will include the injectable, by either associating it\n *   with an `@NgModule` or other `InjectorType`, or by specifying that this injectable should be\n *   provided in the `'root'` injector, which will be the application-level injector in most apps.\n * * `factory` gives the zero argument function which will create an instance of the injectable.\n *   The factory can call `inject` to access the `Injector` and request injection of dependencies.\n *\n * @codeGenApi\n * @publicApi This instruction has been emitted by ViewEngine for some time and is deployed to npm.\n */\nfunction ɵɵdefineInjectable(opts) {\n    return {\n        token: opts.token,\n        providedIn: opts.providedIn || null,\n        factory: opts.factory,\n        value: undefined,\n    };\n}\n/**\n * @deprecated in v8, delete after v10. This API should be used only by generated code, and that\n * code should now use ɵɵdefineInjectable instead.\n * @publicApi\n */\nconst defineInjectable = ɵɵdefineInjectable;\n/**\n * Construct an `InjectorDef` which configures an injector.\n *\n * This should be assigned to a static injector def (`ɵinj`) field on a type, which will then be an\n * `InjectorType`.\n *\n * Options:\n *\n * * `providers`: an optional array of providers to add to the injector. Each provider must\n *   either have a factory or point to a type which has a `ɵprov` static property (the\n *   type must be an `InjectableType`).\n * * `imports`: an optional array of imports of other `InjectorType`s or `InjectorTypeWithModule`s\n *   whose providers will also be added to the injector. Locally provided types will override\n *   providers from imports.\n *\n * @codeGenApi\n */\nfunction ɵɵdefineInjector(options) {\n    return { providers: options.providers || [], imports: options.imports || [] };\n}\n/**\n * Read the injectable def (`ɵprov`) for `type` in a way which is immune to accidentally reading\n * inherited value.\n *\n * @param type A type which may have its own (non-inherited) `ɵprov`.\n */\nfunction getInjectableDef(type) {\n    return getOwnDefinition(type, NG_PROV_DEF) || getOwnDefinition(type, NG_INJECTABLE_DEF);\n}\nfunction isInjectable(type) {\n    return getInjectableDef(type) !== null;\n}\n/**\n * Return definition only if it is defined directly on `type` and is not inherited from a base\n * class of `type`.\n */\nfunction getOwnDefinition(type, field) {\n    return type.hasOwnProperty(field) ? type[field] : null;\n}\n/**\n * Read the injectable def (`ɵprov`) for `type` or read the `ɵprov` from one of its ancestors.\n *\n * @param type A type which may have `ɵprov`, via inheritance.\n *\n * @deprecated Will be removed in a future version of Angular, where an error will occur in the\n *     scenario if we find the `ɵprov` on an ancestor only.\n */\nfunction getInheritedInjectableDef(type) {\n    const def = type && (type[NG_PROV_DEF] || type[NG_INJECTABLE_DEF]);\n    if (def) {\n        ngDevMode &&\n            console.warn(`DEPRECATED: DI is instantiating a token \"${type.name}\" that inherits its @Injectable decorator but does not provide one itself.\\n` +\n                `This will become an error in a future version of Angular. Please add @Injectable() to the \"${type.name}\" class.`);\n        return def;\n    }\n    else {\n        return null;\n    }\n}\n/**\n * Read the injector def type in a way which is immune to accidentally reading inherited value.\n *\n * @param type type which may have an injector def (`ɵinj`)\n */\nfunction getInjectorDef(type) {\n    return type && (type.hasOwnProperty(NG_INJ_DEF) || type.hasOwnProperty(NG_INJECTOR_DEF)) ?\n        type[NG_INJ_DEF] :\n        null;\n}\nconst NG_PROV_DEF = getClosureSafeProperty({ ɵprov: getClosureSafeProperty });\nconst NG_INJ_DEF = getClosureSafeProperty({ ɵinj: getClosureSafeProperty });\n// We need to keep these around so we can read off old defs if new defs are unavailable\nconst NG_INJECTABLE_DEF = getClosureSafeProperty({ ngInjectableDef: getClosureSafeProperty });\nconst NG_INJECTOR_DEF = getClosureSafeProperty({ ngInjectorDef: getClosureSafeProperty });\n\n/**\n * Injection flags for DI.\n *\n * @publicApi\n * @deprecated use an options object for `inject` instead.\n */\nvar InjectFlags;\n(function (InjectFlags) {\n    // TODO(alxhub): make this 'const' (and remove `InternalInjectFlags` enum) when ngc no longer\n    // writes exports of it into ngfactory files.\n    /** Check self and check parent injector if needed */\n    InjectFlags[InjectFlags[\"Default\"] = 0] = \"Default\";\n    /**\n     * Specifies that an injector should retrieve a dependency from any injector until reaching the\n     * host element of the current component. (Only used with Element Injector)\n     */\n    InjectFlags[InjectFlags[\"Host\"] = 1] = \"Host\";\n    /** Don't ascend to ancestors of the node requesting injection. */\n    InjectFlags[InjectFlags[\"Self\"] = 2] = \"Self\";\n    /** Skip the node that is requesting injection. */\n    InjectFlags[InjectFlags[\"SkipSelf\"] = 4] = \"SkipSelf\";\n    /** Inject `defaultValue` instead if token not found. */\n    InjectFlags[InjectFlags[\"Optional\"] = 8] = \"Optional\";\n})(InjectFlags || (InjectFlags = {}));\n\n/**\n * Current implementation of inject.\n *\n * By default, it is `injectInjectorOnly`, which makes it `Injector`-only aware. It can be changed\n * to `directiveInject`, which brings in the `NodeInjector` system of ivy. It is designed this\n * way for two reasons:\n *  1. `Injector` should not depend on ivy logic.\n *  2. To maintain tree shake-ability we don't want to bring in unnecessary code.\n */\nlet _injectImplementation;\nfunction getInjectImplementation() {\n    return _injectImplementation;\n}\n/**\n * Sets the current inject implementation.\n */\nfunction setInjectImplementation(impl) {\n    const previous = _injectImplementation;\n    _injectImplementation = impl;\n    return previous;\n}\n/**\n * Injects `root` tokens in limp mode.\n *\n * If no injector exists, we can still inject tree-shakable providers which have `providedIn` set to\n * `\"root\"`. This is known as the limp mode injection. In such case the value is stored in the\n * injectable definition.\n */\nfunction injectRootLimpMode(token, notFoundValue, flags) {\n    const injectableDef = getInjectableDef(token);\n    if (injectableDef && injectableDef.providedIn == 'root') {\n        return injectableDef.value === undefined ? injectableDef.value = injectableDef.factory() :\n            injectableDef.value;\n    }\n    if (flags & InjectFlags.Optional)\n        return null;\n    if (notFoundValue !== undefined)\n        return notFoundValue;\n    throwProviderNotFoundError(stringify(token), 'Injector');\n}\n/**\n * Assert that `_injectImplementation` is not `fn`.\n *\n * This is useful, to prevent infinite recursion.\n *\n * @param fn Function which it should not equal to\n */\nfunction assertInjectImplementationNotEqual(fn) {\n    ngDevMode &&\n        assertNotEqual(_injectImplementation, fn, 'Calling ɵɵinject would cause infinite recursion');\n}\n\n// Always use __globalThis if available, which is the spec-defined global variable across all\n// environments, then fallback to __global first, because in Node tests both __global and\n// __window may be defined and _global should be __global in that case. Note: Typeof/Instanceof\n// checks are considered side-effects in Terser. We explicitly mark this as side-effect free:\n// https://github.com/terser/terser/issues/250.\nconst _global = ( /* @__PURE__ */(() => (typeof globalThis !== 'undefined' && globalThis) ||\n    (typeof global !== 'undefined' && global) || (typeof window !== 'undefined' && window) ||\n    (typeof self !== 'undefined' && typeof WorkerGlobalScope !== 'undefined' &&\n        self instanceof WorkerGlobalScope && self))());\n\nfunction ngDevModeResetPerfCounters() {\n    const locationString = typeof location !== 'undefined' ? location.toString() : '';\n    const newCounters = {\n        namedConstructors: locationString.indexOf('ngDevMode=namedConstructors') != -1,\n        firstCreatePass: 0,\n        tNode: 0,\n        tView: 0,\n        rendererCreateTextNode: 0,\n        rendererSetText: 0,\n        rendererCreateElement: 0,\n        rendererAddEventListener: 0,\n        rendererSetAttribute: 0,\n        rendererRemoveAttribute: 0,\n        rendererSetProperty: 0,\n        rendererSetClassName: 0,\n        rendererAddClass: 0,\n        rendererRemoveClass: 0,\n        rendererSetStyle: 0,\n        rendererRemoveStyle: 0,\n        rendererDestroy: 0,\n        rendererDestroyNode: 0,\n        rendererMoveNode: 0,\n        rendererRemoveNode: 0,\n        rendererAppendChild: 0,\n        rendererInsertBefore: 0,\n        rendererCreateComment: 0,\n    };\n    // Make sure to refer to ngDevMode as ['ngDevMode'] for closure.\n    const allowNgDevModeTrue = locationString.indexOf('ngDevMode=false') === -1;\n    _global['ngDevMode'] = allowNgDevModeTrue && newCounters;\n    return newCounters;\n}\n/**\n * This function checks to see if the `ngDevMode` has been set. If yes,\n * then we honor it, otherwise we default to dev mode with additional checks.\n *\n * The idea is that unless we are doing production build where we explicitly\n * set `ngDevMode == false` we should be helping the developer by providing\n * as much early warning and errors as possible.\n *\n * `ɵɵdefineComponent` is guaranteed to have been called before any component template functions\n * (and thus Ivy instructions), so a single initialization there is sufficient to ensure ngDevMode\n * is defined for the entire instruction set.\n *\n * When checking `ngDevMode` on toplevel, always init it before referencing it\n * (e.g. `((typeof ngDevMode === 'undefined' || ngDevMode) && initNgDevMode())`), otherwise you can\n *  get a `ReferenceError` like in https://github.com/angular/angular/issues/31595.\n *\n * Details on possible values for `ngDevMode` can be found on its docstring.\n *\n * NOTE:\n * - changes to the `ngDevMode` name must be synced with `compiler-cli/src/tooling.ts`.\n */\nfunction initNgDevMode() {\n    // The below checks are to ensure that calling `initNgDevMode` multiple times does not\n    // reset the counters.\n    // If the `ngDevMode` is not an object, then it means we have not created the perf counters\n    // yet.\n    if (typeof ngDevMode === 'undefined' || ngDevMode) {\n        if (typeof ngDevMode !== 'object') {\n            ngDevModeResetPerfCounters();\n        }\n        return typeof ngDevMode !== 'undefined' && !!ngDevMode;\n    }\n    return false;\n}\n\nconst _THROW_IF_NOT_FOUND = {};\nconst THROW_IF_NOT_FOUND = _THROW_IF_NOT_FOUND;\n/*\n * Name of a property (that we patch onto DI decorator), which is used as an annotation of which\n * InjectFlag this decorator represents. This allows to avoid direct references to the DI decorators\n * in the code, thus making them tree-shakable.\n */\nconst DI_DECORATOR_FLAG = '__NG_DI_FLAG__';\nconst NG_TEMP_TOKEN_PATH = 'ngTempTokenPath';\nconst NG_TOKEN_PATH = 'ngTokenPath';\nconst NEW_LINE = /\\n/gm;\nconst NO_NEW_LINE = 'ɵ';\nconst SOURCE = '__source';\n/**\n * Current injector value used by `inject`.\n * - `undefined`: it is an error to call `inject`\n * - `null`: `inject` can be called but there is no injector (limp-mode).\n * - Injector instance: Use the injector for resolution.\n */\nlet _currentInjector = undefined;\nfunction setCurrentInjector(injector) {\n    const former = _currentInjector;\n    _currentInjector = injector;\n    return former;\n}\nfunction injectInjectorOnly(token, flags = InjectFlags.Default) {\n    if (_currentInjector === undefined) {\n        throw new RuntimeError(-203 /* RuntimeErrorCode.MISSING_INJECTION_CONTEXT */, ngDevMode &&\n            `inject() must be called from an injection context such as a constructor, a factory function, a field initializer, or a function used with \\`EnvironmentInjector#runInContext\\`.`);\n    }\n    else if (_currentInjector === null) {\n        return injectRootLimpMode(token, undefined, flags);\n    }\n    else {\n        return _currentInjector.get(token, flags & InjectFlags.Optional ? null : undefined, flags);\n    }\n}\nfunction ɵɵinject(token, flags = InjectFlags.Default) {\n    return (getInjectImplementation() || injectInjectorOnly)(resolveForwardRef(token), flags);\n}\n/**\n * Throws an error indicating that a factory function could not be generated by the compiler for a\n * particular class.\n *\n * The name of the class is not mentioned here, but will be in the generated factory function name\n * and thus in the stack trace.\n *\n * @codeGenApi\n */\nfunction ɵɵinvalidFactoryDep(index) {\n    throw new RuntimeError(202 /* RuntimeErrorCode.INVALID_FACTORY_DEPENDENCY */, ngDevMode &&\n        `This constructor is not compatible with Angular Dependency Injection because its dependency at index ${index} of the parameter list is invalid.\nThis can happen if the dependency type is a primitive like a string or if an ancestor of this class is missing an Angular decorator.\n\nPlease check that 1) the type for the parameter at index ${index} is correct and 2) the correct Angular decorators are defined for this class and its ancestors.`);\n}\n/**\n * Injects a token from the currently active injector.\n * `inject` is only supported during instantiation of a dependency by the DI system. It can be used\n * during:\n * - Construction (via the `constructor`) of a class being instantiated by the DI system, such\n * as an `@Injectable` or `@Component`.\n * - In the initializer for fields of such classes.\n * - In the factory function specified for `useFactory` of a `Provider` or an `@Injectable`.\n * - In the `factory` function specified for an `InjectionToken`.\n *\n * @param token A token that represents a dependency that should be injected.\n * @param flags Optional flags that control how injection is executed.\n * The flags correspond to injection strategies that can be specified with\n * parameter decorators `@Host`, `@Self`, `@SkipSelf`, and `@Optional`.\n * @returns the injected value if operation is successful, `null` otherwise.\n * @throws if called outside of a supported context.\n *\n * @usageNotes\n * In practice the `inject()` calls are allowed in a constructor, a constructor parameter and a\n * field initializer:\n *\n * ```typescript\n * @Injectable({providedIn: 'root'})\n * export class Car {\n *   radio: Radio|undefined;\n *   // OK: field initializer\n *   spareTyre = inject(Tyre);\n *\n *   constructor() {\n *     // OK: constructor body\n *     this.radio = inject(Radio);\n *   }\n * }\n * ```\n *\n * It is also legal to call `inject` from a provider's factory:\n *\n * ```typescript\n * providers: [\n *   {provide: Car, useFactory: () => {\n *     // OK: a class factory\n *     const engine = inject(Engine);\n *     return new Car(engine);\n *   }}\n * ]\n * ```\n *\n * Calls to the `inject()` function outside of the class creation context will result in error. Most\n * notably, calls to `inject()` are disallowed after a class instance was created, in methods\n * (including lifecycle hooks):\n *\n * ```typescript\n * @Component({ ... })\n * export class CarComponent {\n *   ngOnInit() {\n *     // ERROR: too late, the component instance was already created\n *     const engine = inject(Engine);\n *     engine.start();\n *   }\n * }\n * ```\n *\n * @publicApi\n */\nfunction inject(token, flags = InjectFlags.Default) {\n    return ɵɵinject(token, convertToBitFlags(flags));\n}\n// Converts object-based DI flags (`InjectOptions`) to bit flags (`InjectFlags`).\nfunction convertToBitFlags(flags) {\n    if (typeof flags === 'undefined' || typeof flags === 'number') {\n        return flags;\n    }\n    // While TypeScript doesn't accept it without a cast, bitwise OR with false-y values in\n    // JavaScript is a no-op. We can use that for a very codesize-efficient conversion from\n    // `InjectOptions` to `InjectFlags`.\n    return (0 /* InternalInjectFlags.Default */ | // comment to force a line break in the formatter\n        (flags.optional && 8 /* InternalInjectFlags.Optional */) |\n        (flags.host && 1 /* InternalInjectFlags.Host */) |\n        (flags.self && 2 /* InternalInjectFlags.Self */) |\n        (flags.skipSelf && 4 /* InternalInjectFlags.SkipSelf */));\n}\nfunction injectArgs(types) {\n    const args = [];\n    for (let i = 0; i < types.length; i++) {\n        const arg = resolveForwardRef(types[i]);\n        if (Array.isArray(arg)) {\n            if (arg.length === 0) {\n                throw new RuntimeError(900 /* RuntimeErrorCode.INVALID_DIFFER_INPUT */, ngDevMode && 'Arguments array must have arguments.');\n            }\n            let type = undefined;\n            let flags = InjectFlags.Default;\n            for (let j = 0; j < arg.length; j++) {\n                const meta = arg[j];\n                const flag = getInjectFlag(meta);\n                if (typeof flag === 'number') {\n                    // Special case when we handle @Inject decorator.\n                    if (flag === -1 /* DecoratorFlags.Inject */) {\n                        type = meta.token;\n                    }\n                    else {\n                        flags |= flag;\n                    }\n                }\n                else {\n                    type = meta;\n                }\n            }\n            args.push(ɵɵinject(type, flags));\n        }\n        else {\n            args.push(ɵɵinject(arg));\n        }\n    }\n    return args;\n}\n/**\n * Attaches a given InjectFlag to a given decorator using monkey-patching.\n * Since DI decorators can be used in providers `deps` array (when provider is configured using\n * `useFactory`) without initialization (e.g. `Host`) and as an instance (e.g. `new Host()`), we\n * attach the flag to make it available both as a static property and as a field on decorator\n * instance.\n *\n * @param decorator Provided DI decorator.\n * @param flag InjectFlag that should be applied.\n */\nfunction attachInjectFlag(decorator, flag) {\n    decorator[DI_DECORATOR_FLAG] = flag;\n    decorator.prototype[DI_DECORATOR_FLAG] = flag;\n    return decorator;\n}\n/**\n * Reads monkey-patched property that contains InjectFlag attached to a decorator.\n *\n * @param token Token that may contain monkey-patched DI flags property.\n */\nfunction getInjectFlag(token) {\n    return token[DI_DECORATOR_FLAG];\n}\nfunction catchInjectorError(e, token, injectorErrorName, source) {\n    const tokenPath = e[NG_TEMP_TOKEN_PATH];\n    if (token[SOURCE]) {\n        tokenPath.unshift(token[SOURCE]);\n    }\n    e.message = formatError('\\n' + e.message, tokenPath, injectorErrorName, source);\n    e[NG_TOKEN_PATH] = tokenPath;\n    e[NG_TEMP_TOKEN_PATH] = null;\n    throw e;\n}\nfunction formatError(text, obj, injectorErrorName, source = null) {\n    text = text && text.charAt(0) === '\\n' && text.charAt(1) == NO_NEW_LINE ? text.slice(2) : text;\n    let context = stringify(obj);\n    if (Array.isArray(obj)) {\n        context = obj.map(stringify).join(' -> ');\n    }\n    else if (typeof obj === 'object') {\n        let parts = [];\n        for (let key in obj) {\n            if (obj.hasOwnProperty(key)) {\n                let value = obj[key];\n                parts.push(key + ':' + (typeof value === 'string' ? JSON.stringify(value) : stringify(value)));\n            }\n        }\n        context = `{${parts.join(', ')}}`;\n    }\n    return `${injectorErrorName}${source ? '(' + source + ')' : ''}[${context}]: ${text.replace(NEW_LINE, '\\n  ')}`;\n}\n\n/**\n * Convince closure compiler that the wrapped function has no side-effects.\n *\n * Closure compiler always assumes that `toString` has no side-effects. We use this quirk to\n * allow us to execute a function but have closure compiler mark the call as no-side-effects.\n * It is important that the return value for the `noSideEffects` function be assigned\n * to something which is retained otherwise the call to `noSideEffects` will be removed by closure\n * compiler.\n */\nfunction noSideEffects(fn) {\n    return { toString: fn }.toString();\n}\n\n/**\n * The strategy that the default change detector uses to detect changes.\n * When set, takes effect the next time change detection is triggered.\n *\n * @see {@link ChangeDetectorRef#usage-notes Change detection usage}\n *\n * @publicApi\n */\nvar ChangeDetectionStrategy;\n(function (ChangeDetectionStrategy) {\n    /**\n     * Use the `CheckOnce` strategy, meaning that automatic change detection is deactivated\n     * until reactivated by setting the strategy to `Default` (`CheckAlways`).\n     * Change detection can still be explicitly invoked.\n     * This strategy applies to all child directives and cannot be overridden.\n     */\n    ChangeDetectionStrategy[ChangeDetectionStrategy[\"OnPush\"] = 0] = \"OnPush\";\n    /**\n     * Use the default `CheckAlways` strategy, in which change detection is automatic until\n     * explicitly deactivated.\n     */\n    ChangeDetectionStrategy[ChangeDetectionStrategy[\"Default\"] = 1] = \"Default\";\n})(ChangeDetectionStrategy || (ChangeDetectionStrategy = {}));\n\n/**\n * Defines the CSS styles encapsulation policies for the {@link Component} decorator's\n * `encapsulation` option.\n *\n * See {@link Component#encapsulation encapsulation}.\n *\n * @usageNotes\n * ### Example\n *\n * {@example core/ts/metadata/encapsulation.ts region='longform'}\n *\n * @publicApi\n */\nvar ViewEncapsulation$1;\n(function (ViewEncapsulation) {\n    // TODO: consider making `ViewEncapsulation` a `const enum` instead. See\n    // https://github.com/angular/angular/issues/44119 for additional information.\n    /**\n     * Emulates a native Shadow DOM encapsulation behavior by adding a specific attribute to the\n     * component's host element and applying the same attribute to all the CSS selectors provided\n     * via {@link Component#styles styles} or {@link Component#styleUrls styleUrls}.\n     *\n     * This is the default option.\n     */\n    ViewEncapsulation[ViewEncapsulation[\"Emulated\"] = 0] = \"Emulated\";\n    // Historically the 1 value was for `Native` encapsulation which has been removed as of v11.\n    /**\n     * Doesn't provide any sort of CSS style encapsulation, meaning that all the styles provided\n     * via {@link Component#styles styles} or {@link Component#styleUrls styleUrls} are applicable\n     * to any HTML element of the application regardless of their host Component.\n     */\n    ViewEncapsulation[ViewEncapsulation[\"None\"] = 2] = \"None\";\n    /**\n     * Uses the browser's native Shadow DOM API to encapsulate CSS styles, meaning that it creates\n     * a ShadowRoot for the component's host element which is then used to encapsulate\n     * all the Component's styling.\n     */\n    ViewEncapsulation[ViewEncapsulation[\"ShadowDom\"] = 3] = \"ShadowDom\";\n})(ViewEncapsulation$1 || (ViewEncapsulation$1 = {}));\n\n/**\n * This file contains reuseable \"empty\" symbols that can be used as default return values\n * in different parts of the rendering code. Because the same symbols are returned, this\n * allows for identity checks against these values to be consistently used by the framework\n * code.\n */\nconst EMPTY_OBJ = {};\nconst EMPTY_ARRAY = [];\n// freezing the values prevents any code from accidentally inserting new values in\nif ((typeof ngDevMode === 'undefined' || ngDevMode) && initNgDevMode()) {\n    // These property accesses can be ignored because ngDevMode will be set to false\n    // when optimizing code and the whole if statement will be dropped.\n    // tslint:disable-next-line:no-toplevel-property-access\n    Object.freeze(EMPTY_OBJ);\n    // tslint:disable-next-line:no-toplevel-property-access\n    Object.freeze(EMPTY_ARRAY);\n}\n\nconst NG_COMP_DEF = getClosureSafeProperty({ ɵcmp: getClosureSafeProperty });\nconst NG_DIR_DEF = getClosureSafeProperty({ ɵdir: getClosureSafeProperty });\nconst NG_PIPE_DEF = getClosureSafeProperty({ ɵpipe: getClosureSafeProperty });\nconst NG_MOD_DEF = getClosureSafeProperty({ ɵmod: getClosureSafeProperty });\nconst NG_FACTORY_DEF = getClosureSafeProperty({ ɵfac: getClosureSafeProperty });\n/**\n * If a directive is diPublic, bloomAdd sets a property on the type with this constant as\n * the key and the directive's unique ID as the value. This allows us to map directives to their\n * bloom filter bit for DI.\n */\n// TODO(misko): This is wrong. The NG_ELEMENT_ID should never be minified.\nconst NG_ELEMENT_ID = getClosureSafeProperty({ __NG_ELEMENT_ID__: getClosureSafeProperty });\n\n/** Counter used to generate unique IDs for component definitions. */\nlet componentDefCount = 0;\n/**\n * Create a component definition object.\n *\n *\n * # Example\n * ```\n * class MyComponent {\n *   // Generated by Angular Template Compiler\n *   // [Symbol] syntax will not be supported by TypeScript until v2.7\n *   static ɵcmp = defineComponent({\n *     ...\n *   });\n * }\n * ```\n * @codeGenApi\n */\nfunction ɵɵdefineComponent(componentDefinition) {\n    return noSideEffects(() => {\n        // Initialize ngDevMode. This must be the first statement in ɵɵdefineComponent.\n        // See the `initNgDevMode` docstring for more information.\n        (typeof ngDevMode === 'undefined' || ngDevMode) && initNgDevMode();\n        const baseDef = getNgDirectiveDef(componentDefinition);\n        const def = {\n            ...baseDef,\n            decls: componentDefinition.decls,\n            vars: componentDefinition.vars,\n            template: componentDefinition.template,\n            consts: componentDefinition.consts || null,\n            ngContentSelectors: componentDefinition.ngContentSelectors,\n            onPush: componentDefinition.changeDetection === ChangeDetectionStrategy.OnPush,\n            directiveDefs: null,\n            pipeDefs: null,\n            dependencies: baseDef.standalone && componentDefinition.dependencies || null,\n            getStandaloneInjector: null,\n            data: componentDefinition.data || {},\n            encapsulation: componentDefinition.encapsulation || ViewEncapsulation$1.Emulated,\n            id: `c${componentDefCount++}`,\n            styles: componentDefinition.styles || EMPTY_ARRAY,\n            _: null,\n            schemas: componentDefinition.schemas || null,\n            tView: null,\n        };\n        initFeatures(def);\n        const dependencies = componentDefinition.dependencies;\n        def.directiveDefs = extractDefListOrFactory(dependencies, /* pipeDef */ false);\n        def.pipeDefs = extractDefListOrFactory(dependencies, /* pipeDef */ true);\n        return def;\n    });\n}\n/**\n * Generated next to NgModules to monkey-patch directive and pipe references onto a component's\n * definition, when generating a direct reference in the component file would otherwise create an\n * import cycle.\n *\n * See [this explanation](https://hackmd.io/Odw80D0pR6yfsOjg_7XCJg?view) for more details.\n *\n * @codeGenApi\n */\nfunction ɵɵsetComponentScope(type, directives, pipes) {\n    const def = type.ɵcmp;\n    def.directiveDefs = extractDefListOrFactory(directives, /* pipeDef */ false);\n    def.pipeDefs = extractDefListOrFactory(pipes, /* pipeDef */ true);\n}\nfunction extractDirectiveDef(type) {\n    return getComponentDef(type) || getDirectiveDef(type);\n}\nfunction nonNull(value) {\n    return value !== null;\n}\n/**\n * @codeGenApi\n */\nfunction ɵɵdefineNgModule(def) {\n    return noSideEffects(() => {\n        const res = {\n            type: def.type,\n            bootstrap: def.bootstrap || EMPTY_ARRAY,\n            declarations: def.declarations || EMPTY_ARRAY,\n            imports: def.imports || EMPTY_ARRAY,\n            exports: def.exports || EMPTY_ARRAY,\n            transitiveCompileScopes: null,\n            schemas: def.schemas || null,\n            id: def.id || null,\n        };\n        return res;\n    });\n}\n/**\n * Adds the module metadata that is necessary to compute the module's transitive scope to an\n * existing module definition.\n *\n * Scope metadata of modules is not used in production builds, so calls to this function can be\n * marked pure to tree-shake it from the bundle, allowing for all referenced declarations\n * to become eligible for tree-shaking as well.\n *\n * @codeGenApi\n */\nfunction ɵɵsetNgModuleScope(type, scope) {\n    return noSideEffects(() => {\n        const ngModuleDef = getNgModuleDef(type, true);\n        ngModuleDef.declarations = scope.declarations || EMPTY_ARRAY;\n        ngModuleDef.imports = scope.imports || EMPTY_ARRAY;\n        ngModuleDef.exports = scope.exports || EMPTY_ARRAY;\n    });\n}\n/**\n * Inverts an inputs or outputs lookup such that the keys, which were the\n * minified keys, are part of the values, and the values are parsed so that\n * the publicName of the property is the new key\n *\n * e.g. for\n *\n * ```\n * class Comp {\n *   @Input()\n *   propName1: string;\n *\n *   @Input('publicName2')\n *   declaredPropName2: number;\n * }\n * ```\n *\n * will be serialized as\n *\n * ```\n * {\n *   propName1: 'propName1',\n *   declaredPropName2: ['publicName2', 'declaredPropName2'],\n * }\n * ```\n *\n * which is than translated by the minifier as:\n *\n * ```\n * {\n *   minifiedPropName1: 'propName1',\n *   minifiedPropName2: ['publicName2', 'declaredPropName2'],\n * }\n * ```\n *\n * becomes: (public name => minifiedName)\n *\n * ```\n * {\n *  'propName1': 'minifiedPropName1',\n *  'publicName2': 'minifiedPropName2',\n * }\n * ```\n *\n * Optionally the function can take `secondary` which will result in: (public name => declared name)\n *\n * ```\n * {\n *  'propName1': 'propName1',\n *  'publicName2': 'declaredPropName2',\n * }\n * ```\n *\n\n */\nfunction invertObject(obj, secondary) {\n    if (obj == null)\n        return EMPTY_OBJ;\n    const newLookup = {};\n    for (const minifiedKey in obj) {\n        if (obj.hasOwnProperty(minifiedKey)) {\n            let publicName = obj[minifiedKey];\n            let declaredName = publicName;\n            if (Array.isArray(publicName)) {\n                declaredName = publicName[1];\n                publicName = publicName[0];\n            }\n            newLookup[publicName] = minifiedKey;\n            if (secondary) {\n                (secondary[publicName] = declaredName);\n            }\n        }\n    }\n    return newLookup;\n}\n/**\n * Create a directive definition object.\n *\n * # Example\n * ```ts\n * class MyDirective {\n *   // Generated by Angular Template Compiler\n *   // [Symbol] syntax will not be supported by TypeScript until v2.7\n *   static ɵdir = ɵɵdefineDirective({\n *     ...\n *   });\n * }\n * ```\n *\n * @codeGenApi\n */\nfunction ɵɵdefineDirective(directiveDefinition) {\n    return noSideEffects(() => {\n        const def = getNgDirectiveDef(directiveDefinition);\n        initFeatures(def);\n        return def;\n    });\n}\n/**\n * Create a pipe definition object.\n *\n * # Example\n * ```\n * class MyPipe implements PipeTransform {\n *   // Generated by Angular Template Compiler\n *   static ɵpipe = definePipe({\n *     ...\n *   });\n * }\n * ```\n * @param pipeDef Pipe definition generated by the compiler\n *\n * @codeGenApi\n */\nfunction ɵɵdefinePipe(pipeDef) {\n    return {\n        type: pipeDef.type,\n        name: pipeDef.name,\n        factory: null,\n        pure: pipeDef.pure !== false,\n        standalone: pipeDef.standalone === true,\n        onDestroy: pipeDef.type.prototype.ngOnDestroy || null\n    };\n}\n/**\n * The following getter methods retrieve the definition from the type. Currently the retrieval\n * honors inheritance, but in the future we may change the rule to require that definitions are\n * explicit. This would require some sort of migration strategy.\n */\nfunction getComponentDef(type) {\n    return type[NG_COMP_DEF] || null;\n}\nfunction getDirectiveDef(type) {\n    return type[NG_DIR_DEF] || null;\n}\nfunction getPipeDef$1(type) {\n    return type[NG_PIPE_DEF] || null;\n}\n/**\n * Checks whether a given Component, Directive or Pipe is marked as standalone.\n * This will return false if passed anything other than a Component, Directive, or Pipe class\n * See this guide for additional information: https://angular.io/guide/standalone-components\n *\n * @param type A reference to a Component, Directive or Pipe.\n * @publicApi\n */\nfunction isStandalone(type) {\n    const def = getComponentDef(type) || getDirectiveDef(type) || getPipeDef$1(type);\n    return def !== null ? def.standalone : false;\n}\nfunction getNgModuleDef(type, throwNotFound) {\n    const ngModuleDef = type[NG_MOD_DEF] || null;\n    if (!ngModuleDef && throwNotFound === true) {\n        throw new Error(`Type ${stringify(type)} does not have 'ɵmod' property.`);\n    }\n    return ngModuleDef;\n}\nfunction getNgDirectiveDef(directiveDefinition) {\n    const declaredInputs = {};\n    return {\n        type: directiveDefinition.type,\n        providersResolver: null,\n        factory: null,\n        hostBindings: directiveDefinition.hostBindings || null,\n        hostVars: directiveDefinition.hostVars || 0,\n        hostAttrs: directiveDefinition.hostAttrs || null,\n        contentQueries: directiveDefinition.contentQueries || null,\n        declaredInputs,\n        exportAs: directiveDefinition.exportAs || null,\n        standalone: directiveDefinition.standalone === true,\n        selectors: directiveDefinition.selectors || EMPTY_ARRAY,\n        viewQuery: directiveDefinition.viewQuery || null,\n        features: directiveDefinition.features || null,\n        setInput: null,\n        findHostDirectiveDefs: null,\n        hostDirectives: null,\n        inputs: invertObject(directiveDefinition.inputs, declaredInputs),\n        outputs: invertObject(directiveDefinition.outputs),\n    };\n}\nfunction initFeatures(definition) {\n    definition.features?.forEach((fn) => fn(definition));\n}\nfunction extractDefListOrFactory(dependencies, pipeDef) {\n    if (!dependencies) {\n        return null;\n    }\n    const defExtractor = pipeDef ? getPipeDef$1 : extractDirectiveDef;\n    return () => (typeof dependencies === 'function' ? dependencies() : dependencies)\n        .map(dep => defExtractor(dep))\n        .filter(nonNull);\n}\n\n// Below are constants for LView indices to help us look up LView members\n// without having to remember the specific indices.\n// Uglify will inline these when minifying so there shouldn't be a cost.\nconst HOST = 0;\nconst TVIEW = 1;\nconst FLAGS = 2;\nconst PARENT = 3;\nconst NEXT = 4;\nconst TRANSPLANTED_VIEWS_TO_REFRESH = 5;\nconst T_HOST = 6;\nconst CLEANUP = 7;\nconst CONTEXT = 8;\nconst INJECTOR$1 = 9;\nconst RENDERER_FACTORY = 10;\nconst RENDERER = 11;\nconst SANITIZER = 12;\nconst CHILD_HEAD = 13;\nconst CHILD_TAIL = 14;\n// FIXME(misko): Investigate if the three declarations aren't all same thing.\nconst DECLARATION_VIEW = 15;\nconst DECLARATION_COMPONENT_VIEW = 16;\nconst DECLARATION_LCONTAINER = 17;\nconst PREORDER_HOOK_FLAGS = 18;\nconst QUERIES = 19;\nconst ID = 20;\nconst EMBEDDED_VIEW_INJECTOR = 21;\n/**\n * Size of LView's header. Necessary to adjust for it when setting slots.\n *\n * IMPORTANT: `HEADER_OFFSET` should only be referred to the in the `ɵɵ*` instructions to translate\n * instruction index into `LView` index. All other indexes should be in the `LView` index space and\n * there should be no need to refer to `HEADER_OFFSET` anywhere else.\n */\nconst HEADER_OFFSET = 22;\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\nconst unusedValueExportToPlacateAjd$4 = 1;\n\n/**\n * Special location which allows easy identification of type. If we have an array which was\n * retrieved from the `LView` and that array has `true` at `TYPE` location, we know it is\n * `LContainer`.\n */\nconst TYPE = 1;\n/**\n * Below are constants for LContainer indices to help us look up LContainer members\n * without having to remember the specific indices.\n * Uglify will inline these when minifying so there shouldn't be a cost.\n */\n/**\n * Flag to signify that this `LContainer` may have transplanted views which need to be change\n * detected. (see: `LView[DECLARATION_COMPONENT_VIEW])`.\n *\n * This flag, once set, is never unset for the `LContainer`. This means that when unset we can skip\n * a lot of work in `refreshEmbeddedViews`. But when set we still need to verify\n * that the `MOVED_VIEWS` are transplanted and on-push.\n */\nconst HAS_TRANSPLANTED_VIEWS = 2;\n// PARENT, NEXT, TRANSPLANTED_VIEWS_TO_REFRESH are indices 3, 4, and 5\n// As we already have these constants in LView, we don't need to re-create them.\n// T_HOST is index 6\n// We already have this constants in LView, we don't need to re-create it.\nconst NATIVE = 7;\nconst VIEW_REFS = 8;\nconst MOVED_VIEWS = 9;\n/**\n * Size of LContainer's header. Represents the index after which all views in the\n * container will be inserted. We need to keep a record of current views so we know\n * which views are already in the DOM (and don't need to be re-added) and so we can\n * remove views from the DOM when they are no longer required.\n */\nconst CONTAINER_HEADER_OFFSET = 10;\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\nconst unusedValueExportToPlacateAjd$3 = 1;\n\n/**\n * True if `value` is `LView`.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nfunction isLView(value) {\n    return Array.isArray(value) && typeof value[TYPE] === 'object';\n}\n/**\n * True if `value` is `LContainer`.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nfunction isLContainer(value) {\n    return Array.isArray(value) && value[TYPE] === true;\n}\nfunction isContentQueryHost(tNode) {\n    return (tNode.flags & 4 /* TNodeFlags.hasContentQuery */) !== 0;\n}\nfunction isComponentHost(tNode) {\n    return tNode.componentOffset > -1;\n}\nfunction isDirectiveHost(tNode) {\n    return (tNode.flags & 1 /* TNodeFlags.isDirectiveHost */) === 1 /* TNodeFlags.isDirectiveHost */;\n}\nfunction isComponentDef(def) {\n    return !!def.template;\n}\nfunction isRootView(target) {\n    return (target[FLAGS] & 256 /* LViewFlags.IsRoot */) !== 0;\n}\n\n// [Assert functions do not constraint type when they are guarded by a truthy\n// expression.](https://github.com/microsoft/TypeScript/issues/37295)\nfunction assertTNodeForLView(tNode, lView) {\n    assertTNodeForTView(tNode, lView[TVIEW]);\n}\nfunction assertTNodeForTView(tNode, tView) {\n    assertTNode(tNode);\n    tNode.hasOwnProperty('tView_') &&\n        assertEqual(tNode.tView_, tView, 'This TNode does not belong to this TView.');\n}\nfunction assertTNode(tNode) {\n    assertDefined(tNode, 'TNode must be defined');\n    if (!(tNode && typeof tNode === 'object' && tNode.hasOwnProperty('directiveStylingLast'))) {\n        throwError('Not of type TNode, got: ' + tNode);\n    }\n}\nfunction assertTIcu(tIcu) {\n    assertDefined(tIcu, 'Expected TIcu to be defined');\n    if (!(typeof tIcu.currentCaseLViewIndex === 'number')) {\n        throwError('Object is not of TIcu type.');\n    }\n}\nfunction assertComponentType(actual, msg = 'Type passed in is not ComponentType, it does not have \\'ɵcmp\\' property.') {\n    if (!getComponentDef(actual)) {\n        throwError(msg);\n    }\n}\nfunction assertNgModuleType(actual, msg = 'Type passed in is not NgModuleType, it does not have \\'ɵmod\\' property.') {\n    if (!getNgModuleDef(actual)) {\n        throwError(msg);\n    }\n}\nfunction assertCurrentTNodeIsParent(isParent) {\n    assertEqual(isParent, true, 'currentTNode should be a parent');\n}\nfunction assertHasParent(tNode) {\n    assertDefined(tNode, 'currentTNode should exist!');\n    assertDefined(tNode.parent, 'currentTNode should have a parent');\n}\nfunction assertLContainer(value) {\n    assertDefined(value, 'LContainer must be defined');\n    assertEqual(isLContainer(value), true, 'Expecting LContainer');\n}\nfunction assertLViewOrUndefined(value) {\n    value && assertEqual(isLView(value), true, 'Expecting LView or undefined or null');\n}\nfunction assertLView(value) {\n    assertDefined(value, 'LView must be defined');\n    assertEqual(isLView(value), true, 'Expecting LView');\n}\nfunction assertFirstCreatePass(tView, errMessage) {\n    assertEqual(tView.firstCreatePass, true, errMessage || 'Should only be called in first create pass.');\n}\nfunction assertFirstUpdatePass(tView, errMessage) {\n    assertEqual(tView.firstUpdatePass, true, errMessage || 'Should only be called in first update pass.');\n}\n/**\n * This is a basic sanity check that an object is probably a directive def. DirectiveDef is\n * an interface, so we can't do a direct instanceof check.\n */\nfunction assertDirectiveDef(obj) {\n    if (obj.type === undefined || obj.selectors == undefined || obj.inputs === undefined) {\n        throwError(`Expected a DirectiveDef/ComponentDef and this object does not seem to have the expected shape.`);\n    }\n}\nfunction assertIndexInDeclRange(lView, index) {\n    const tView = lView[1];\n    assertBetween(HEADER_OFFSET, tView.bindingStartIndex, index);\n}\nfunction assertIndexInExpandoRange(lView, index) {\n    const tView = lView[1];\n    assertBetween(tView.expandoStartIndex, lView.length, index);\n}\nfunction assertBetween(lower, upper, index) {\n    if (!(lower <= index && index < upper)) {\n        throwError(`Index out of range (expecting ${lower} <= ${index} < ${upper})`);\n    }\n}\nfunction assertProjectionSlots(lView, errMessage) {\n    assertDefined(lView[DECLARATION_COMPONENT_VIEW], 'Component views should exist.');\n    assertDefined(lView[DECLARATION_COMPONENT_VIEW][T_HOST].projection, errMessage ||\n        'Components with projection nodes (<ng-content>) must have projection slots defined.');\n}\nfunction assertParentView(lView, errMessage) {\n    assertDefined(lView, errMessage || 'Component views should always have a parent view (component\\'s host view)');\n}\n/**\n * This is a basic sanity check that the `injectorIndex` seems to point to what looks like a\n * NodeInjector data structure.\n *\n * @param lView `LView` which should be checked.\n * @param injectorIndex index into the `LView` where the `NodeInjector` is expected.\n */\nfunction assertNodeInjector(lView, injectorIndex) {\n    assertIndexInExpandoRange(lView, injectorIndex);\n    assertIndexInExpandoRange(lView, injectorIndex + 8 /* NodeInjectorOffset.PARENT */);\n    assertNumber(lView[injectorIndex + 0], 'injectorIndex should point to a bloom filter');\n    assertNumber(lView[injectorIndex + 1], 'injectorIndex should point to a bloom filter');\n    assertNumber(lView[injectorIndex + 2], 'injectorIndex should point to a bloom filter');\n    assertNumber(lView[injectorIndex + 3], 'injectorIndex should point to a bloom filter');\n    assertNumber(lView[injectorIndex + 4], 'injectorIndex should point to a bloom filter');\n    assertNumber(lView[injectorIndex + 5], 'injectorIndex should point to a bloom filter');\n    assertNumber(lView[injectorIndex + 6], 'injectorIndex should point to a bloom filter');\n    assertNumber(lView[injectorIndex + 7], 'injectorIndex should point to a bloom filter');\n    assertNumber(lView[injectorIndex + 8 /* NodeInjectorOffset.PARENT */], 'injectorIndex should point to parent injector');\n}\n\nfunction getFactoryDef(type, throwNotFound) {\n    const hasFactoryDef = type.hasOwnProperty(NG_FACTORY_DEF);\n    if (!hasFactoryDef && throwNotFound === true && ngDevMode) {\n        throw new Error(`Type ${stringify(type)} does not have 'ɵfac' property.`);\n    }\n    return hasFactoryDef ? type[NG_FACTORY_DEF] : null;\n}\n\n/**\n * Represents a basic change from a previous to a new value for a single\n * property on a directive instance. Passed as a value in a\n * {@link SimpleChanges} object to the `ngOnChanges` hook.\n *\n * @see `OnChanges`\n *\n * @publicApi\n */\nclass SimpleChange {\n    constructor(previousValue, currentValue, firstChange) {\n        this.previousValue = previousValue;\n        this.currentValue = currentValue;\n        this.firstChange = firstChange;\n    }\n    /**\n     * Check whether the new value is the first value assigned.\n     */\n    isFirstChange() {\n        return this.firstChange;\n    }\n}\n\n/**\n * The NgOnChangesFeature decorates a component with support for the ngOnChanges\n * lifecycle hook, so it should be included in any component that implements\n * that hook.\n *\n * If the component or directive uses inheritance, the NgOnChangesFeature MUST\n * be included as a feature AFTER {@link InheritDefinitionFeature}, otherwise\n * inherited properties will not be propagated to the ngOnChanges lifecycle\n * hook.\n *\n * Example usage:\n *\n * ```\n * static ɵcmp = defineComponent({\n *   ...\n *   inputs: {name: 'publicName'},\n *   features: [NgOnChangesFeature]\n * });\n * ```\n *\n * @codeGenApi\n */\nfunction ɵɵNgOnChangesFeature() {\n    return NgOnChangesFeatureImpl;\n}\nfunction NgOnChangesFeatureImpl(definition) {\n    if (definition.type.prototype.ngOnChanges) {\n        definition.setInput = ngOnChangesSetInput;\n    }\n    return rememberChangeHistoryAndInvokeOnChangesHook;\n}\n// This option ensures that the ngOnChanges lifecycle hook will be inherited\n// from superclasses (in InheritDefinitionFeature).\n/** @nocollapse */\n// tslint:disable-next-line:no-toplevel-property-access\nɵɵNgOnChangesFeature.ngInherit = true;\n/**\n * This is a synthetic lifecycle hook which gets inserted into `TView.preOrderHooks` to simulate\n * `ngOnChanges`.\n *\n * The hook reads the `NgSimpleChangesStore` data from the component instance and if changes are\n * found it invokes `ngOnChanges` on the component instance.\n *\n * @param this Component instance. Because this function gets inserted into `TView.preOrderHooks`,\n *     it is guaranteed to be called with component instance.\n */\nfunction rememberChangeHistoryAndInvokeOnChangesHook() {\n    const simpleChangesStore = getSimpleChangesStore(this);\n    const current = simpleChangesStore?.current;\n    if (current) {\n        const previous = simpleChangesStore.previous;\n        if (previous === EMPTY_OBJ) {\n            simpleChangesStore.previous = current;\n        }\n        else {\n            // New changes are copied to the previous store, so that we don't lose history for inputs\n            // which were not changed this time\n            for (let key in current) {\n                previous[key] = current[key];\n            }\n        }\n        simpleChangesStore.current = null;\n        this.ngOnChanges(current);\n    }\n}\nfunction ngOnChangesSetInput(instance, value, publicName, privateName) {\n    const declaredName = this.declaredInputs[publicName];\n    ngDevMode && assertString(declaredName, 'Name of input in ngOnChanges has to be a string');\n    const simpleChangesStore = getSimpleChangesStore(instance) ||\n        setSimpleChangesStore(instance, { previous: EMPTY_OBJ, current: null });\n    const current = simpleChangesStore.current || (simpleChangesStore.current = {});\n    const previous = simpleChangesStore.previous;\n    const previousChange = previous[declaredName];\n    current[declaredName] = new SimpleChange(previousChange && previousChange.currentValue, value, previous === EMPTY_OBJ);\n    instance[privateName] = value;\n}\nconst SIMPLE_CHANGES_STORE = '__ngSimpleChanges__';\nfunction getSimpleChangesStore(instance) {\n    return instance[SIMPLE_CHANGES_STORE] || null;\n}\nfunction setSimpleChangesStore(instance, store) {\n    return instance[SIMPLE_CHANGES_STORE] = store;\n}\n\nlet profilerCallback = null;\n/**\n * Sets the callback function which will be invoked before and after performing certain actions at\n * runtime (for example, before and after running change detection).\n *\n * Warning: this function is *INTERNAL* and should not be relied upon in application's code.\n * The contract of the function might be changed in any release and/or the function can be removed\n * completely.\n *\n * @param profiler function provided by the caller or null value to disable profiling.\n */\nconst setProfiler = (profiler) => {\n    profilerCallback = profiler;\n};\n/**\n * Profiler function which wraps user code executed by the runtime.\n *\n * @param event ProfilerEvent corresponding to the execution context\n * @param instance component instance\n * @param hookOrListener lifecycle hook function or output listener. The value depends on the\n *  execution context\n * @returns\n */\nconst profiler = function (event, instance, hookOrListener) {\n    if (profilerCallback != null /* both `null` and `undefined` */) {\n        profilerCallback(event, instance, hookOrListener);\n    }\n};\n\nconst SVG_NAMESPACE = 'svg';\nconst MATH_ML_NAMESPACE = 'math';\n\n/**\n * For efficiency reasons we often put several different data types (`RNode`, `LView`, `LContainer`)\n * in same location in `LView`. This is because we don't want to pre-allocate space for it\n * because the storage is sparse. This file contains utilities for dealing with such data types.\n *\n * How do we know what is stored at a given location in `LView`.\n * - `Array.isArray(value) === false` => `RNode` (The normal storage value)\n * - `Array.isArray(value) === true` => then the `value[0]` represents the wrapped value.\n *   - `typeof value[TYPE] === 'object'` => `LView`\n *      - This happens when we have a component at a given location\n *   - `typeof value[TYPE] === true` => `LContainer`\n *      - This happens when we have `LContainer` binding at a given location.\n *\n *\n * NOTE: it is assumed that `Array.isArray` and `typeof` operations are very efficient.\n */\n/**\n * Returns `RNode`.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nfunction unwrapRNode(value) {\n    while (Array.isArray(value)) {\n        value = value[HOST];\n    }\n    return value;\n}\n/**\n * Returns `LView` or `null` if not found.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nfunction unwrapLView(value) {\n    while (Array.isArray(value)) {\n        // This check is same as `isLView()` but we don't call at as we don't want to call\n        // `Array.isArray()` twice and give JITer more work for inlining.\n        if (typeof value[TYPE] === 'object')\n            return value;\n        value = value[HOST];\n    }\n    return null;\n}\n/**\n * Retrieves an element value from the provided `viewData`, by unwrapping\n * from any containers, component views, or style contexts.\n */\nfunction getNativeByIndex(index, lView) {\n    ngDevMode && assertIndexInRange(lView, index);\n    ngDevMode && assertGreaterThanOrEqual(index, HEADER_OFFSET, 'Expected to be past HEADER_OFFSET');\n    return unwrapRNode(lView[index]);\n}\n/**\n * Retrieve an `RNode` for a given `TNode` and `LView`.\n *\n * This function guarantees in dev mode to retrieve a non-null `RNode`.\n *\n * @param tNode\n * @param lView\n */\nfunction getNativeByTNode(tNode, lView) {\n    ngDevMode && assertTNodeForLView(tNode, lView);\n    ngDevMode && assertIndexInRange(lView, tNode.index);\n    const node = unwrapRNode(lView[tNode.index]);\n    return node;\n}\n/**\n * Retrieve an `RNode` or `null` for a given `TNode` and `LView`.\n *\n * Some `TNode`s don't have associated `RNode`s. For example `Projection`\n *\n * @param tNode\n * @param lView\n */\nfunction getNativeByTNodeOrNull(tNode, lView) {\n    const index = tNode === null ? -1 : tNode.index;\n    if (index !== -1) {\n        ngDevMode && assertTNodeForLView(tNode, lView);\n        const node = unwrapRNode(lView[index]);\n        return node;\n    }\n    return null;\n}\n// fixme(misko): The return Type should be `TNode|null`\nfunction getTNode(tView, index) {\n    ngDevMode && assertGreaterThan(index, -1, 'wrong index for TNode');\n    ngDevMode && assertLessThan(index, tView.data.length, 'wrong index for TNode');\n    const tNode = tView.data[index];\n    ngDevMode && tNode !== null && assertTNode(tNode);\n    return tNode;\n}\n/** Retrieves a value from any `LView` or `TData`. */\nfunction load(view, index) {\n    ngDevMode && assertIndexInRange(view, index);\n    return view[index];\n}\nfunction getComponentLViewByIndex(nodeIndex, hostView) {\n    // Could be an LView or an LContainer. If LContainer, unwrap to find LView.\n    ngDevMode && assertIndexInRange(hostView, nodeIndex);\n    const slotValue = hostView[nodeIndex];\n    const lView = isLView(slotValue) ? slotValue : slotValue[HOST];\n    return lView;\n}\n/** Checks whether a given view is in creation mode */\nfunction isCreationMode(view) {\n    return (view[FLAGS] & 4 /* LViewFlags.CreationMode */) === 4 /* LViewFlags.CreationMode */;\n}\n/**\n * Returns a boolean for whether the view is attached to the change detection tree.\n *\n * Note: This determines whether a view should be checked, not whether it's inserted\n * into a container. For that, you'll want `viewAttachedToContainer` below.\n */\nfunction viewAttachedToChangeDetector(view) {\n    return (view[FLAGS] & 64 /* LViewFlags.Attached */) === 64 /* LViewFlags.Attached */;\n}\n/** Returns a boolean for whether the view is attached to a container. */\nfunction viewAttachedToContainer(view) {\n    return isLContainer(view[PARENT]);\n}\nfunction getConstant(consts, index) {\n    if (index === null || index === undefined)\n        return null;\n    ngDevMode && assertIndexInRange(consts, index);\n    return consts[index];\n}\n/**\n * Resets the pre-order hook flags of the view.\n * @param lView the LView on which the flags are reset\n */\nfunction resetPreOrderHookFlags(lView) {\n    lView[PREORDER_HOOK_FLAGS] = 0;\n}\n/**\n * Updates the `TRANSPLANTED_VIEWS_TO_REFRESH` counter on the `LContainer` as well as the parents\n * whose\n *  1. counter goes from 0 to 1, indicating that there is a new child that has a view to refresh\n *  or\n *  2. counter goes from 1 to 0, indicating there are no more descendant views to refresh\n */\nfunction updateTransplantedViewCount(lContainer, amount) {\n    lContainer[TRANSPLANTED_VIEWS_TO_REFRESH] += amount;\n    let viewOrContainer = lContainer;\n    let parent = lContainer[PARENT];\n    while (parent !== null &&\n        ((amount === 1 && viewOrContainer[TRANSPLANTED_VIEWS_TO_REFRESH] === 1) ||\n            (amount === -1 && viewOrContainer[TRANSPLANTED_VIEWS_TO_REFRESH] === 0))) {\n        parent[TRANSPLANTED_VIEWS_TO_REFRESH] += amount;\n        viewOrContainer = parent;\n        parent = parent[PARENT];\n    }\n}\n\nconst instructionState = {\n    lFrame: createLFrame(null),\n    bindingsEnabled: true,\n};\n/**\n * In this mode, any changes in bindings will throw an ExpressionChangedAfterChecked error.\n *\n * Necessary to support ChangeDetectorRef.checkNoChanges().\n *\n * The `checkNoChanges` function is invoked only in ngDevMode=true and verifies that no unintended\n * changes exist in the change detector or its children.\n */\nlet _isInCheckNoChangesMode = false;\n/**\n * Returns true if the instruction state stack is empty.\n *\n * Intended to be called from tests only (tree shaken otherwise).\n */\nfunction specOnlyIsInstructionStateEmpty() {\n    return instructionState.lFrame.parent === null;\n}\nfunction getElementDepthCount() {\n    return instructionState.lFrame.elementDepthCount;\n}\nfunction increaseElementDepthCount() {\n    instructionState.lFrame.elementDepthCount++;\n}\nfunction decreaseElementDepthCount() {\n    instructionState.lFrame.elementDepthCount--;\n}\nfunction getBindingsEnabled() {\n    return instructionState.bindingsEnabled;\n}\n/**\n * Enables directive matching on elements.\n *\n *  * Example:\n * ```\n * <my-comp my-directive>\n *   Should match component / directive.\n * </my-comp>\n * <div ngNonBindable>\n *   <!-- ɵɵdisableBindings() -->\n *   <my-comp my-directive>\n *     Should not match component / directive because we are in ngNonBindable.\n *   </my-comp>\n *   <!-- ɵɵenableBindings() -->\n * </div>\n * ```\n *\n * @codeGenApi\n */\nfunction ɵɵenableBindings() {\n    instructionState.bindingsEnabled = true;\n}\n/**\n * Disables directive matching on element.\n *\n *  * Example:\n * ```\n * <my-comp my-directive>\n *   Should match component / directive.\n * </my-comp>\n * <div ngNonBindable>\n *   <!-- ɵɵdisableBindings() -->\n *   <my-comp my-directive>\n *     Should not match component / directive because we are in ngNonBindable.\n *   </my-comp>\n *   <!-- ɵɵenableBindings() -->\n * </div>\n * ```\n *\n * @codeGenApi\n */\nfunction ɵɵdisableBindings() {\n    instructionState.bindingsEnabled = false;\n}\n/**\n * Return the current `LView`.\n */\nfunction getLView() {\n    return instructionState.lFrame.lView;\n}\n/**\n * Return the current `TView`.\n */\nfunction getTView() {\n    return instructionState.lFrame.tView;\n}\n/**\n * Restores `contextViewData` to the given OpaqueViewState instance.\n *\n * Used in conjunction with the getCurrentView() instruction to save a snapshot\n * of the current view and restore it when listeners are invoked. This allows\n * walking the declaration view tree in listeners to get vars from parent views.\n *\n * @param viewToRestore The OpaqueViewState instance to restore.\n * @returns Context of the restored OpaqueViewState instance.\n *\n * @codeGenApi\n */\nfunction ɵɵrestoreView(viewToRestore) {\n    instructionState.lFrame.contextLView = viewToRestore;\n    return viewToRestore[CONTEXT];\n}\n/**\n * Clears the view set in `ɵɵrestoreView` from memory. Returns the passed in\n * value so that it can be used as a return value of an instruction.\n *\n * @codeGenApi\n */\nfunction ɵɵresetView(value) {\n    instructionState.lFrame.contextLView = null;\n    return value;\n}\nfunction getCurrentTNode() {\n    let currentTNode = getCurrentTNodePlaceholderOk();\n    while (currentTNode !== null && currentTNode.type === 64 /* TNodeType.Placeholder */) {\n        currentTNode = currentTNode.parent;\n    }\n    return currentTNode;\n}\nfunction getCurrentTNodePlaceholderOk() {\n    return instructionState.lFrame.currentTNode;\n}\nfunction getCurrentParentTNode() {\n    const lFrame = instructionState.lFrame;\n    const currentTNode = lFrame.currentTNode;\n    return lFrame.isParent ? currentTNode : currentTNode.parent;\n}\nfunction setCurrentTNode(tNode, isParent) {\n    ngDevMode && tNode && assertTNodeForTView(tNode, instructionState.lFrame.tView);\n    const lFrame = instructionState.lFrame;\n    lFrame.currentTNode = tNode;\n    lFrame.isParent = isParent;\n}\nfunction isCurrentTNodeParent() {\n    return instructionState.lFrame.isParent;\n}\nfunction setCurrentTNodeAsNotParent() {\n    instructionState.lFrame.isParent = false;\n}\nfunction getContextLView() {\n    const contextLView = instructionState.lFrame.contextLView;\n    ngDevMode && assertDefined(contextLView, 'contextLView must be defined.');\n    return contextLView;\n}\nfunction isInCheckNoChangesMode() {\n    !ngDevMode && throwError('Must never be called in production mode');\n    return _isInCheckNoChangesMode;\n}\nfunction setIsInCheckNoChangesMode(mode) {\n    !ngDevMode && throwError('Must never be called in production mode');\n    _isInCheckNoChangesMode = mode;\n}\n// top level variables should not be exported for performance reasons (PERF_NOTES.md)\nfunction getBindingRoot() {\n    const lFrame = instructionState.lFrame;\n    let index = lFrame.bindingRootIndex;\n    if (index === -1) {\n        index = lFrame.bindingRootIndex = lFrame.tView.bindingStartIndex;\n    }\n    return index;\n}\nfunction getBindingIndex() {\n    return instructionState.lFrame.bindingIndex;\n}\nfunction setBindingIndex(value) {\n    return instructionState.lFrame.bindingIndex = value;\n}\nfunction nextBindingIndex() {\n    return instructionState.lFrame.bindingIndex++;\n}\nfunction incrementBindingIndex(count) {\n    const lFrame = instructionState.lFrame;\n    const index = lFrame.bindingIndex;\n    lFrame.bindingIndex = lFrame.bindingIndex + count;\n    return index;\n}\nfunction isInI18nBlock() {\n    return instructionState.lFrame.inI18n;\n}\nfunction setInI18nBlock(isInI18nBlock) {\n    instructionState.lFrame.inI18n = isInI18nBlock;\n}\n/**\n * Set a new binding root index so that host template functions can execute.\n *\n * Bindings inside the host template are 0 index. But because we don't know ahead of time\n * how many host bindings we have we can't pre-compute them. For this reason they are all\n * 0 index and we just shift the root so that they match next available location in the LView.\n *\n * @param bindingRootIndex Root index for `hostBindings`\n * @param currentDirectiveIndex `TData[currentDirectiveIndex]` will point to the current directive\n *        whose `hostBindings` are being processed.\n */\nfunction setBindingRootForHostBindings(bindingRootIndex, currentDirectiveIndex) {\n    const lFrame = instructionState.lFrame;\n    lFrame.bindingIndex = lFrame.bindingRootIndex = bindingRootIndex;\n    setCurrentDirectiveIndex(currentDirectiveIndex);\n}\n/**\n * When host binding is executing this points to the directive index.\n * `TView.data[getCurrentDirectiveIndex()]` is `DirectiveDef`\n * `LView[getCurrentDirectiveIndex()]` is directive instance.\n */\nfunction getCurrentDirectiveIndex() {\n    return instructionState.lFrame.currentDirectiveIndex;\n}\n/**\n * Sets an index of a directive whose `hostBindings` are being processed.\n *\n * @param currentDirectiveIndex `TData` index where current directive instance can be found.\n */\nfunction setCurrentDirectiveIndex(currentDirectiveIndex) {\n    instructionState.lFrame.currentDirectiveIndex = currentDirectiveIndex;\n}\n/**\n * Retrieve the current `DirectiveDef` which is active when `hostBindings` instruction is being\n * executed.\n *\n * @param tData Current `TData` where the `DirectiveDef` will be looked up at.\n */\nfunction getCurrentDirectiveDef(tData) {\n    const currentDirectiveIndex = instructionState.lFrame.currentDirectiveIndex;\n    return currentDirectiveIndex === -1 ? null : tData[currentDirectiveIndex];\n}\nfunction getCurrentQueryIndex() {\n    return instructionState.lFrame.currentQueryIndex;\n}\nfunction setCurrentQueryIndex(value) {\n    instructionState.lFrame.currentQueryIndex = value;\n}\n/**\n * Returns a `TNode` of the location where the current `LView` is declared at.\n *\n * @param lView an `LView` that we want to find parent `TNode` for.\n */\nfunction getDeclarationTNode(lView) {\n    const tView = lView[TVIEW];\n    // Return the declaration parent for embedded views\n    if (tView.type === 2 /* TViewType.Embedded */) {\n        ngDevMode && assertDefined(tView.declTNode, 'Embedded TNodes should have declaration parents.');\n        return tView.declTNode;\n    }\n    // Components don't have `TView.declTNode` because each instance of component could be\n    // inserted in different location, hence `TView.declTNode` is meaningless.\n    // Falling back to `T_HOST` in case we cross component boundary.\n    if (tView.type === 1 /* TViewType.Component */) {\n        return lView[T_HOST];\n    }\n    // Remaining TNode type is `TViewType.Root` which doesn't have a parent TNode.\n    return null;\n}\n/**\n * This is a light weight version of the `enterView` which is needed by the DI system.\n *\n * @param lView `LView` location of the DI context.\n * @param tNode `TNode` for DI context\n * @param flags DI context flags. if `SkipSelf` flag is set than we walk up the declaration\n *     tree from `tNode`  until we find parent declared `TElementNode`.\n * @returns `true` if we have successfully entered DI associated with `tNode` (or with declared\n *     `TNode` if `flags` has  `SkipSelf`). Failing to enter DI implies that no associated\n *     `NodeInjector` can be found and we should instead use `ModuleInjector`.\n *     - If `true` than this call must be fallowed by `leaveDI`\n *     - If `false` than this call failed and we should NOT call `leaveDI`\n */\nfunction enterDI(lView, tNode, flags) {\n    ngDevMode && assertLViewOrUndefined(lView);\n    if (flags & InjectFlags.SkipSelf) {\n        ngDevMode && assertTNodeForTView(tNode, lView[TVIEW]);\n        let parentTNode = tNode;\n        let parentLView = lView;\n        while (true) {\n            ngDevMode && assertDefined(parentTNode, 'Parent TNode should be defined');\n            parentTNode = parentTNode.parent;\n            if (parentTNode === null && !(flags & InjectFlags.Host)) {\n                parentTNode = getDeclarationTNode(parentLView);\n                if (parentTNode === null)\n                    break;\n                // In this case, a parent exists and is definitely an element. So it will definitely\n                // have an existing lView as the declaration view, which is why we can assume it's defined.\n                ngDevMode && assertDefined(parentLView, 'Parent LView should be defined');\n                parentLView = parentLView[DECLARATION_VIEW];\n                // In Ivy there are Comment nodes that correspond to ngIf and NgFor embedded directives\n                // We want to skip those and look only at Elements and ElementContainers to ensure\n                // we're looking at true parent nodes, and not content or other types.\n                if (parentTNode.type & (2 /* TNodeType.Element */ | 8 /* TNodeType.ElementContainer */)) {\n                    break;\n                }\n            }\n            else {\n                break;\n            }\n        }\n        if (parentTNode === null) {\n            // If we failed to find a parent TNode this means that we should use module injector.\n            return false;\n        }\n        else {\n            tNode = parentTNode;\n            lView = parentLView;\n        }\n    }\n    ngDevMode && assertTNodeForLView(tNode, lView);\n    const lFrame = instructionState.lFrame = allocLFrame();\n    lFrame.currentTNode = tNode;\n    lFrame.lView = lView;\n    return true;\n}\n/**\n * Swap the current lView with a new lView.\n *\n * For performance reasons we store the lView in the top level of the module.\n * This way we minimize the number of properties to read. Whenever a new view\n * is entered we have to store the lView for later, and when the view is\n * exited the state has to be restored\n *\n * @param newView New lView to become active\n * @returns the previously active lView;\n */\nfunction enterView(newView) {\n    ngDevMode && assertNotEqual(newView[0], newView[1], '????');\n    ngDevMode && assertLViewOrUndefined(newView);\n    const newLFrame = allocLFrame();\n    if (ngDevMode) {\n        assertEqual(newLFrame.isParent, true, 'Expected clean LFrame');\n        assertEqual(newLFrame.lView, null, 'Expected clean LFrame');\n        assertEqual(newLFrame.tView, null, 'Expected clean LFrame');\n        assertEqual(newLFrame.selectedIndex, -1, 'Expected clean LFrame');\n        assertEqual(newLFrame.elementDepthCount, 0, 'Expected clean LFrame');\n        assertEqual(newLFrame.currentDirectiveIndex, -1, 'Expected clean LFrame');\n        assertEqual(newLFrame.currentNamespace, null, 'Expected clean LFrame');\n        assertEqual(newLFrame.bindingRootIndex, -1, 'Expected clean LFrame');\n        assertEqual(newLFrame.currentQueryIndex, 0, 'Expected clean LFrame');\n    }\n    const tView = newView[TVIEW];\n    instructionState.lFrame = newLFrame;\n    ngDevMode && tView.firstChild && assertTNodeForTView(tView.firstChild, tView);\n    newLFrame.currentTNode = tView.firstChild;\n    newLFrame.lView = newView;\n    newLFrame.tView = tView;\n    newLFrame.contextLView = newView;\n    newLFrame.bindingIndex = tView.bindingStartIndex;\n    newLFrame.inI18n = false;\n}\n/**\n * Allocates next free LFrame. This function tries to reuse the `LFrame`s to lower memory pressure.\n */\nfunction allocLFrame() {\n    const currentLFrame = instructionState.lFrame;\n    const childLFrame = currentLFrame === null ? null : currentLFrame.child;\n    const newLFrame = childLFrame === null ? createLFrame(currentLFrame) : childLFrame;\n    return newLFrame;\n}\nfunction createLFrame(parent) {\n    const lFrame = {\n        currentTNode: null,\n        isParent: true,\n        lView: null,\n        tView: null,\n        selectedIndex: -1,\n        contextLView: null,\n        elementDepthCount: 0,\n        currentNamespace: null,\n        currentDirectiveIndex: -1,\n        bindingRootIndex: -1,\n        bindingIndex: -1,\n        currentQueryIndex: 0,\n        parent: parent,\n        child: null,\n        inI18n: false,\n    };\n    parent !== null && (parent.child = lFrame); // link the new LFrame for reuse.\n    return lFrame;\n}\n/**\n * A lightweight version of leave which is used with DI.\n *\n * This function only resets `currentTNode` and `LView` as those are the only properties\n * used with DI (`enterDI()`).\n *\n * NOTE: This function is reexported as `leaveDI`. However `leaveDI` has return type of `void` where\n * as `leaveViewLight` has `LFrame`. This is so that `leaveViewLight` can be used in `leaveView`.\n */\nfunction leaveViewLight() {\n    const oldLFrame = instructionState.lFrame;\n    instructionState.lFrame = oldLFrame.parent;\n    oldLFrame.currentTNode = null;\n    oldLFrame.lView = null;\n    return oldLFrame;\n}\n/**\n * This is a lightweight version of the `leaveView` which is needed by the DI system.\n *\n * NOTE: this function is an alias so that we can change the type of the function to have `void`\n * return type.\n */\nconst leaveDI = leaveViewLight;\n/**\n * Leave the current `LView`\n *\n * This pops the `LFrame` with the associated `LView` from the stack.\n *\n * IMPORTANT: We must zero out the `LFrame` values here otherwise they will be retained. This is\n * because for performance reasons we don't release `LFrame` but rather keep it for next use.\n */\nfunction leaveView() {\n    const oldLFrame = leaveViewLight();\n    oldLFrame.isParent = true;\n    oldLFrame.tView = null;\n    oldLFrame.selectedIndex = -1;\n    oldLFrame.contextLView = null;\n    oldLFrame.elementDepthCount = 0;\n    oldLFrame.currentDirectiveIndex = -1;\n    oldLFrame.currentNamespace = null;\n    oldLFrame.bindingRootIndex = -1;\n    oldLFrame.bindingIndex = -1;\n    oldLFrame.currentQueryIndex = 0;\n}\nfunction nextContextImpl(level) {\n    const contextLView = instructionState.lFrame.contextLView =\n        walkUpViews(level, instructionState.lFrame.contextLView);\n    return contextLView[CONTEXT];\n}\nfunction walkUpViews(nestingLevel, currentView) {\n    while (nestingLevel > 0) {\n        ngDevMode &&\n            assertDefined(currentView[DECLARATION_VIEW], 'Declaration view should be defined if nesting level is greater than 0.');\n        currentView = currentView[DECLARATION_VIEW];\n        nestingLevel--;\n    }\n    return currentView;\n}\n/**\n * Gets the currently selected element index.\n *\n * Used with {@link property} instruction (and more in the future) to identify the index in the\n * current `LView` to act on.\n */\nfunction getSelectedIndex() {\n    return instructionState.lFrame.selectedIndex;\n}\n/**\n * Sets the most recent index passed to {@link select}\n *\n * Used with {@link property} instruction (and more in the future) to identify the index in the\n * current `LView` to act on.\n *\n * (Note that if an \"exit function\" was set earlier (via `setElementExitFn()`) then that will be\n * run if and when the provided `index` value is different from the current selected index value.)\n */\nfunction setSelectedIndex(index) {\n    ngDevMode && index !== -1 &&\n        assertGreaterThanOrEqual(index, HEADER_OFFSET, 'Index must be past HEADER_OFFSET (or -1).');\n    ngDevMode &&\n        assertLessThan(index, instructionState.lFrame.lView.length, 'Can\\'t set index passed end of LView');\n    instructionState.lFrame.selectedIndex = index;\n}\n/**\n * Gets the `tNode` that represents currently selected element.\n */\nfunction getSelectedTNode() {\n    const lFrame = instructionState.lFrame;\n    return getTNode(lFrame.tView, lFrame.selectedIndex);\n}\n/**\n * Sets the namespace used to create elements to `'http://www.w3.org/2000/svg'` in global state.\n *\n * @codeGenApi\n */\nfunction ɵɵnamespaceSVG() {\n    instructionState.lFrame.currentNamespace = SVG_NAMESPACE;\n}\n/**\n * Sets the namespace used to create elements to `'http://www.w3.org/1998/MathML/'` in global state.\n *\n * @codeGenApi\n */\nfunction ɵɵnamespaceMathML() {\n    instructionState.lFrame.currentNamespace = MATH_ML_NAMESPACE;\n}\n/**\n * Sets the namespace used to create elements to `null`, which forces element creation to use\n * `createElement` rather than `createElementNS`.\n *\n * @codeGenApi\n */\nfunction ɵɵnamespaceHTML() {\n    namespaceHTMLInternal();\n}\n/**\n * Sets the namespace used to create elements to `null`, which forces element creation to use\n * `createElement` rather than `createElementNS`.\n */\nfunction namespaceHTMLInternal() {\n    instructionState.lFrame.currentNamespace = null;\n}\nfunction getNamespace$1() {\n    return instructionState.lFrame.currentNamespace;\n}\n\n/**\n * Adds all directive lifecycle hooks from the given `DirectiveDef` to the given `TView`.\n *\n * Must be run *only* on the first template pass.\n *\n * Sets up the pre-order hooks on the provided `tView`,\n * see {@link HookData} for details about the data structure.\n *\n * @param directiveIndex The index of the directive in LView\n * @param directiveDef The definition containing the hooks to setup in tView\n * @param tView The current TView\n */\nfunction registerPreOrderHooks(directiveIndex, directiveDef, tView) {\n    ngDevMode && assertFirstCreatePass(tView);\n    const { ngOnChanges, ngOnInit, ngDoCheck } = directiveDef.type.prototype;\n    if (ngOnChanges) {\n        const wrappedOnChanges = NgOnChangesFeatureImpl(directiveDef);\n        (tView.preOrderHooks ?? (tView.preOrderHooks = [])).push(directiveIndex, wrappedOnChanges);\n        (tView.preOrderCheckHooks ?? (tView.preOrderCheckHooks = [])).push(directiveIndex, wrappedOnChanges);\n    }\n    if (ngOnInit) {\n        (tView.preOrderHooks ?? (tView.preOrderHooks = [])).push(0 - directiveIndex, ngOnInit);\n    }\n    if (ngDoCheck) {\n        (tView.preOrderHooks ?? (tView.preOrderHooks = [])).push(directiveIndex, ngDoCheck);\n        (tView.preOrderCheckHooks ?? (tView.preOrderCheckHooks = [])).push(directiveIndex, ngDoCheck);\n    }\n}\n/**\n *\n * Loops through the directives on the provided `tNode` and queues hooks to be\n * run that are not initialization hooks.\n *\n * Should be executed during `elementEnd()` and similar to\n * preserve hook execution order. Content, view, and destroy hooks for projected\n * components and directives must be called *before* their hosts.\n *\n * Sets up the content, view, and destroy hooks on the provided `tView`,\n * see {@link HookData} for details about the data structure.\n *\n * NOTE: This does not set up `onChanges`, `onInit` or `doCheck`, those are set up\n * separately at `elementStart`.\n *\n * @param tView The current TView\n * @param tNode The TNode whose directives are to be searched for hooks to queue\n */\nfunction registerPostOrderHooks(tView, tNode) {\n    ngDevMode && assertFirstCreatePass(tView);\n    // It's necessary to loop through the directives at elementEnd() (rather than processing in\n    // directiveCreate) so we can preserve the current hook order. Content, view, and destroy\n    // hooks for projected components and directives must be called *before* their hosts.\n    for (let i = tNode.directiveStart, end = tNode.directiveEnd; i < end; i++) {\n        const directiveDef = tView.data[i];\n        ngDevMode && assertDefined(directiveDef, 'Expecting DirectiveDef');\n        const lifecycleHooks = directiveDef.type.prototype;\n        const { ngAfterContentInit, ngAfterContentChecked, ngAfterViewInit, ngAfterViewChecked, ngOnDestroy } = lifecycleHooks;\n        if (ngAfterContentInit) {\n            (tView.contentHooks ?? (tView.contentHooks = [])).push(-i, ngAfterContentInit);\n        }\n        if (ngAfterContentChecked) {\n            (tView.contentHooks ?? (tView.contentHooks = [])).push(i, ngAfterContentChecked);\n            (tView.contentCheckHooks ?? (tView.contentCheckHooks = [])).push(i, ngAfterContentChecked);\n        }\n        if (ngAfterViewInit) {\n            (tView.viewHooks ?? (tView.viewHooks = [])).push(-i, ngAfterViewInit);\n        }\n        if (ngAfterViewChecked) {\n            (tView.viewHooks ?? (tView.viewHooks = [])).push(i, ngAfterViewChecked);\n            (tView.viewCheckHooks ?? (tView.viewCheckHooks = [])).push(i, ngAfterViewChecked);\n        }\n        if (ngOnDestroy != null) {\n            (tView.destroyHooks ?? (tView.destroyHooks = [])).push(i, ngOnDestroy);\n        }\n    }\n}\n/**\n * Executing hooks requires complex logic as we need to deal with 2 constraints.\n *\n * 1. Init hooks (ngOnInit, ngAfterContentInit, ngAfterViewInit) must all be executed once and only\n * once, across many change detection cycles. This must be true even if some hooks throw, or if\n * some recursively trigger a change detection cycle.\n * To solve that, it is required to track the state of the execution of these init hooks.\n * This is done by storing and maintaining flags in the view: the {@link InitPhaseState},\n * and the index within that phase. They can be seen as a cursor in the following structure:\n * [[onInit1, onInit2], [afterContentInit1], [afterViewInit1, afterViewInit2, afterViewInit3]]\n * They are are stored as flags in LView[FLAGS].\n *\n * 2. Pre-order hooks can be executed in batches, because of the select instruction.\n * To be able to pause and resume their execution, we also need some state about the hook's array\n * that is being processed:\n * - the index of the next hook to be executed\n * - the number of init hooks already found in the processed part of the  array\n * They are are stored as flags in LView[PREORDER_HOOK_FLAGS].\n */\n/**\n * Executes pre-order check hooks ( OnChanges, DoChanges) given a view where all the init hooks were\n * executed once. This is a light version of executeInitAndCheckPreOrderHooks where we can skip read\n * / write of the init-hooks related flags.\n * @param lView The LView where hooks are defined\n * @param hooks Hooks to be run\n * @param nodeIndex 3 cases depending on the value:\n * - undefined: all hooks from the array should be executed (post-order case)\n * - null: execute hooks only from the saved index until the end of the array (pre-order case, when\n * flushing the remaining hooks)\n * - number: execute hooks only from the saved index until that node index exclusive (pre-order\n * case, when executing select(number))\n */\nfunction executeCheckHooks(lView, hooks, nodeIndex) {\n    callHooks(lView, hooks, 3 /* InitPhaseState.InitPhaseCompleted */, nodeIndex);\n}\n/**\n * Executes post-order init and check hooks (one of AfterContentInit, AfterContentChecked,\n * AfterViewInit, AfterViewChecked) given a view where there are pending init hooks to be executed.\n * @param lView The LView where hooks are defined\n * @param hooks Hooks to be run\n * @param initPhase A phase for which hooks should be run\n * @param nodeIndex 3 cases depending on the value:\n * - undefined: all hooks from the array should be executed (post-order case)\n * - null: execute hooks only from the saved index until the end of the array (pre-order case, when\n * flushing the remaining hooks)\n * - number: execute hooks only from the saved index until that node index exclusive (pre-order\n * case, when executing select(number))\n */\nfunction executeInitAndCheckHooks(lView, hooks, initPhase, nodeIndex) {\n    ngDevMode &&\n        assertNotEqual(initPhase, 3 /* InitPhaseState.InitPhaseCompleted */, 'Init pre-order hooks should not be called more than once');\n    if ((lView[FLAGS] & 3 /* LViewFlags.InitPhaseStateMask */) === initPhase) {\n        callHooks(lView, hooks, initPhase, nodeIndex);\n    }\n}\nfunction incrementInitPhaseFlags(lView, initPhase) {\n    ngDevMode &&\n        assertNotEqual(initPhase, 3 /* InitPhaseState.InitPhaseCompleted */, 'Init hooks phase should not be incremented after all init hooks have been run.');\n    let flags = lView[FLAGS];\n    if ((flags & 3 /* LViewFlags.InitPhaseStateMask */) === initPhase) {\n        flags &= 2047 /* LViewFlags.IndexWithinInitPhaseReset */;\n        flags += 1 /* LViewFlags.InitPhaseStateIncrementer */;\n        lView[FLAGS] = flags;\n    }\n}\n/**\n * Calls lifecycle hooks with their contexts, skipping init hooks if it's not\n * the first LView pass\n *\n * @param currentView The current view\n * @param arr The array in which the hooks are found\n * @param initPhaseState the current state of the init phase\n * @param currentNodeIndex 3 cases depending on the value:\n * - undefined: all hooks from the array should be executed (post-order case)\n * - null: execute hooks only from the saved index until the end of the array (pre-order case, when\n * flushing the remaining hooks)\n * - number: execute hooks only from the saved index until that node index exclusive (pre-order\n * case, when executing select(number))\n */\nfunction callHooks(currentView, arr, initPhase, currentNodeIndex) {\n    ngDevMode &&\n        assertEqual(isInCheckNoChangesMode(), false, 'Hooks should never be run when in check no changes mode.');\n    const startIndex = currentNodeIndex !== undefined ?\n        (currentView[PREORDER_HOOK_FLAGS] & 65535 /* PreOrderHookFlags.IndexOfTheNextPreOrderHookMaskMask */) :\n        0;\n    const nodeIndexLimit = currentNodeIndex != null ? currentNodeIndex : -1;\n    const max = arr.length - 1; // Stop the loop at length - 1, because we look for the hook at i + 1\n    let lastNodeIndexFound = 0;\n    for (let i = startIndex; i < max; i++) {\n        const hook = arr[i + 1];\n        if (typeof hook === 'number') {\n            lastNodeIndexFound = arr[i];\n            if (currentNodeIndex != null && lastNodeIndexFound >= currentNodeIndex) {\n                break;\n            }\n        }\n        else {\n            const isInitHook = arr[i] < 0;\n            if (isInitHook)\n                currentView[PREORDER_HOOK_FLAGS] += 65536 /* PreOrderHookFlags.NumberOfInitHooksCalledIncrementer */;\n            if (lastNodeIndexFound < nodeIndexLimit || nodeIndexLimit == -1) {\n                callHook(currentView, initPhase, arr, i);\n                currentView[PREORDER_HOOK_FLAGS] =\n                    (currentView[PREORDER_HOOK_FLAGS] & 4294901760 /* PreOrderHookFlags.NumberOfInitHooksCalledMask */) + i +\n                        2;\n            }\n            i++;\n        }\n    }\n}\n/**\n * Execute one hook against the current `LView`.\n *\n * @param currentView The current view\n * @param initPhaseState the current state of the init phase\n * @param arr The array in which the hooks are found\n * @param i The current index within the hook data array\n */\nfunction callHook(currentView, initPhase, arr, i) {\n    const isInitHook = arr[i] < 0;\n    const hook = arr[i + 1];\n    const directiveIndex = isInitHook ? -arr[i] : arr[i];\n    const directive = currentView[directiveIndex];\n    if (isInitHook) {\n        const indexWithintInitPhase = currentView[FLAGS] >> 11 /* LViewFlags.IndexWithinInitPhaseShift */;\n        // The init phase state must be always checked here as it may have been recursively updated.\n        if (indexWithintInitPhase <\n            (currentView[PREORDER_HOOK_FLAGS] >> 16 /* PreOrderHookFlags.NumberOfInitHooksCalledShift */) &&\n            (currentView[FLAGS] & 3 /* LViewFlags.InitPhaseStateMask */) === initPhase) {\n            currentView[FLAGS] += 2048 /* LViewFlags.IndexWithinInitPhaseIncrementer */;\n            profiler(4 /* ProfilerEvent.LifecycleHookStart */, directive, hook);\n            try {\n                hook.call(directive);\n            }\n            finally {\n                profiler(5 /* ProfilerEvent.LifecycleHookEnd */, directive, hook);\n            }\n        }\n    }\n    else {\n        profiler(4 /* ProfilerEvent.LifecycleHookStart */, directive, hook);\n        try {\n            hook.call(directive);\n        }\n        finally {\n            profiler(5 /* ProfilerEvent.LifecycleHookEnd */, directive, hook);\n        }\n    }\n}\n\nconst NO_PARENT_INJECTOR = -1;\n/**\n * Each injector is saved in 9 contiguous slots in `LView` and 9 contiguous slots in\n * `TView.data`. This allows us to store information about the current node's tokens (which\n * can be shared in `TView`) as well as the tokens of its ancestor nodes (which cannot be\n * shared, so they live in `LView`).\n *\n * Each of these slots (aside from the last slot) contains a bloom filter. This bloom filter\n * determines whether a directive is available on the associated node or not. This prevents us\n * from searching the directives array at this level unless it's probable the directive is in it.\n *\n * See: https://en.wikipedia.org/wiki/Bloom_filter for more about bloom filters.\n *\n * Because all injectors have been flattened into `LView` and `TViewData`, they cannot typed\n * using interfaces as they were previously. The start index of each `LInjector` and `TInjector`\n * will differ based on where it is flattened into the main array, so it's not possible to know\n * the indices ahead of time and save their types here. The interfaces are still included here\n * for documentation purposes.\n *\n * export interface LInjector extends Array<any> {\n *\n *    // Cumulative bloom for directive IDs 0-31  (IDs are % BLOOM_SIZE)\n *    [0]: number;\n *\n *    // Cumulative bloom for directive IDs 32-63\n *    [1]: number;\n *\n *    // Cumulative bloom for directive IDs 64-95\n *    [2]: number;\n *\n *    // Cumulative bloom for directive IDs 96-127\n *    [3]: number;\n *\n *    // Cumulative bloom for directive IDs 128-159\n *    [4]: number;\n *\n *    // Cumulative bloom for directive IDs 160 - 191\n *    [5]: number;\n *\n *    // Cumulative bloom for directive IDs 192 - 223\n *    [6]: number;\n *\n *    // Cumulative bloom for directive IDs 224 - 255\n *    [7]: number;\n *\n *    // We need to store a reference to the injector's parent so DI can keep looking up\n *    // the injector tree until it finds the dependency it's looking for.\n *    [PARENT_INJECTOR]: number;\n * }\n *\n * export interface TInjector extends Array<any> {\n *\n *    // Shared node bloom for directive IDs 0-31  (IDs are % BLOOM_SIZE)\n *    [0]: number;\n *\n *    // Shared node bloom for directive IDs 32-63\n *    [1]: number;\n *\n *    // Shared node bloom for directive IDs 64-95\n *    [2]: number;\n *\n *    // Shared node bloom for directive IDs 96-127\n *    [3]: number;\n *\n *    // Shared node bloom for directive IDs 128-159\n *    [4]: number;\n *\n *    // Shared node bloom for directive IDs 160 - 191\n *    [5]: number;\n *\n *    // Shared node bloom for directive IDs 192 - 223\n *    [6]: number;\n *\n *    // Shared node bloom for directive IDs 224 - 255\n *    [7]: number;\n *\n *    // Necessary to find directive indices for a particular node.\n *    [TNODE]: TElementNode|TElementContainerNode|TContainerNode;\n *  }\n */\n/**\n * Factory for creating instances of injectors in the NodeInjector.\n *\n * This factory is complicated by the fact that it can resolve `multi` factories as well.\n *\n * NOTE: Some of the fields are optional which means that this class has two hidden classes.\n * - One without `multi` support (most common)\n * - One with `multi` values, (rare).\n *\n * Since VMs can cache up to 4 inline hidden classes this is OK.\n *\n * - Single factory: Only `resolving` and `factory` is defined.\n * - `providers` factory: `componentProviders` is a number and `index = -1`.\n * - `viewProviders` factory: `componentProviders` is a number and `index` points to `providers`.\n */\nclass NodeInjectorFactory {\n    constructor(\n    /**\n     * Factory to invoke in order to create a new instance.\n     */\n    factory, \n    /**\n     * Set to `true` if the token is declared in `viewProviders` (or if it is component).\n     */\n    isViewProvider, injectImplementation) {\n        this.factory = factory;\n        /**\n         * Marker set to true during factory invocation to see if we get into recursive loop.\n         * Recursive loop causes an error to be displayed.\n         */\n        this.resolving = false;\n        ngDevMode && assertDefined(factory, 'Factory not specified');\n        ngDevMode && assertEqual(typeof factory, 'function', 'Expected factory function.');\n        this.canSeeViewProviders = isViewProvider;\n        this.injectImpl = injectImplementation;\n    }\n}\nfunction isFactory(obj) {\n    return obj instanceof NodeInjectorFactory;\n}\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\nconst unusedValueExportToPlacateAjd$2 = 1;\n\n/**\n * Converts `TNodeType` into human readable text.\n * Make sure this matches with `TNodeType`\n */\nfunction toTNodeTypeAsString(tNodeType) {\n    let text = '';\n    (tNodeType & 1 /* TNodeType.Text */) && (text += '|Text');\n    (tNodeType & 2 /* TNodeType.Element */) && (text += '|Element');\n    (tNodeType & 4 /* TNodeType.Container */) && (text += '|Container');\n    (tNodeType & 8 /* TNodeType.ElementContainer */) && (text += '|ElementContainer');\n    (tNodeType & 16 /* TNodeType.Projection */) && (text += '|Projection');\n    (tNodeType & 32 /* TNodeType.Icu */) && (text += '|IcuContainer');\n    (tNodeType & 64 /* TNodeType.Placeholder */) && (text += '|Placeholder');\n    return text.length > 0 ? text.substring(1) : text;\n}\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\nconst unusedValueExportToPlacateAjd$1 = 1;\n/**\n * Returns `true` if the `TNode` has a directive which has `@Input()` for `class` binding.\n *\n * ```\n * <div my-dir [class]=\"exp\"></div>\n * ```\n * and\n * ```\n * @Directive({\n * })\n * class MyDirective {\n *   @Input()\n *   class: string;\n * }\n * ```\n *\n * In the above case it is necessary to write the reconciled styling information into the\n * directive's input.\n *\n * @param tNode\n */\nfunction hasClassInput(tNode) {\n    return (tNode.flags & 8 /* TNodeFlags.hasClassInput */) !== 0;\n}\n/**\n * Returns `true` if the `TNode` has a directive which has `@Input()` for `style` binding.\n *\n * ```\n * <div my-dir [style]=\"exp\"></div>\n * ```\n * and\n * ```\n * @Directive({\n * })\n * class MyDirective {\n *   @Input()\n *   class: string;\n * }\n * ```\n *\n * In the above case it is necessary to write the reconciled styling information into the\n * directive's input.\n *\n * @param tNode\n */\nfunction hasStyleInput(tNode) {\n    return (tNode.flags & 16 /* TNodeFlags.hasStyleInput */) !== 0;\n}\n\nfunction assertTNodeType(tNode, expectedTypes, message) {\n    assertDefined(tNode, 'should be called with a TNode');\n    if ((tNode.type & expectedTypes) === 0) {\n        throwError(message ||\n            `Expected [${toTNodeTypeAsString(expectedTypes)}] but got ${toTNodeTypeAsString(tNode.type)}.`);\n    }\n}\nfunction assertPureTNodeType(type) {\n    if (!(type === 2 /* TNodeType.Element */ || //\n        type === 1 /* TNodeType.Text */ || //\n        type === 4 /* TNodeType.Container */ || //\n        type === 8 /* TNodeType.ElementContainer */ || //\n        type === 32 /* TNodeType.Icu */ || //\n        type === 16 /* TNodeType.Projection */ || //\n        type === 64 /* TNodeType.Placeholder */)) {\n        throwError(`Expected TNodeType to have only a single type selected, but got ${toTNodeTypeAsString(type)}.`);\n    }\n}\n\n/**\n * Assigns all attribute values to the provided element via the inferred renderer.\n *\n * This function accepts two forms of attribute entries:\n *\n * default: (key, value):\n *  attrs = [key1, value1, key2, value2]\n *\n * namespaced: (NAMESPACE_MARKER, uri, name, value)\n *  attrs = [NAMESPACE_MARKER, uri, name, value, NAMESPACE_MARKER, uri, name, value]\n *\n * The `attrs` array can contain a mix of both the default and namespaced entries.\n * The \"default\" values are set without a marker, but if the function comes across\n * a marker value then it will attempt to set a namespaced value. If the marker is\n * not of a namespaced value then the function will quit and return the index value\n * where it stopped during the iteration of the attrs array.\n *\n * See [AttributeMarker] to understand what the namespace marker value is.\n *\n * Note that this instruction does not support assigning style and class values to\n * an element. See `elementStart` and `elementHostAttrs` to learn how styling values\n * are applied to an element.\n * @param renderer The renderer to be used\n * @param native The element that the attributes will be assigned to\n * @param attrs The attribute array of values that will be assigned to the element\n * @returns the index value that was last accessed in the attributes array\n */\nfunction setUpAttributes(renderer, native, attrs) {\n    let i = 0;\n    while (i < attrs.length) {\n        const value = attrs[i];\n        if (typeof value === 'number') {\n            // only namespaces are supported. Other value types (such as style/class\n            // entries) are not supported in this function.\n            if (value !== 0 /* AttributeMarker.NamespaceURI */) {\n                break;\n            }\n            // we just landed on the marker value ... therefore\n            // we should skip to the next entry\n            i++;\n            const namespaceURI = attrs[i++];\n            const attrName = attrs[i++];\n            const attrVal = attrs[i++];\n            ngDevMode && ngDevMode.rendererSetAttribute++;\n            renderer.setAttribute(native, attrName, attrVal, namespaceURI);\n        }\n        else {\n            // attrName is string;\n            const attrName = value;\n            const attrVal = attrs[++i];\n            // Standard attributes\n            ngDevMode && ngDevMode.rendererSetAttribute++;\n            if (isAnimationProp(attrName)) {\n                renderer.setProperty(native, attrName, attrVal);\n            }\n            else {\n                renderer.setAttribute(native, attrName, attrVal);\n            }\n            i++;\n        }\n    }\n    // another piece of code may iterate over the same attributes array. Therefore\n    // it may be helpful to return the exact spot where the attributes array exited\n    // whether by running into an unsupported marker or if all the static values were\n    // iterated over.\n    return i;\n}\n/**\n * Test whether the given value is a marker that indicates that the following\n * attribute values in a `TAttributes` array are only the names of attributes,\n * and not name-value pairs.\n * @param marker The attribute marker to test.\n * @returns true if the marker is a \"name-only\" marker (e.g. `Bindings`, `Template` or `I18n`).\n */\nfunction isNameOnlyAttributeMarker(marker) {\n    return marker === 3 /* AttributeMarker.Bindings */ || marker === 4 /* AttributeMarker.Template */ ||\n        marker === 6 /* AttributeMarker.I18n */;\n}\nfunction isAnimationProp(name) {\n    // Perf note: accessing charCodeAt to check for the first character of a string is faster as\n    // compared to accessing a character at index 0 (ex. name[0]). The main reason for this is that\n    // charCodeAt doesn't allocate memory to return a substring.\n    return name.charCodeAt(0) === 64 /* CharCode.AT_SIGN */;\n}\n/**\n * Merges `src` `TAttributes` into `dst` `TAttributes` removing any duplicates in the process.\n *\n * This merge function keeps the order of attrs same.\n *\n * @param dst Location of where the merged `TAttributes` should end up.\n * @param src `TAttributes` which should be appended to `dst`\n */\nfunction mergeHostAttrs(dst, src) {\n    if (src === null || src.length === 0) {\n        // do nothing\n    }\n    else if (dst === null || dst.length === 0) {\n        // We have source, but dst is empty, just make a copy.\n        dst = src.slice();\n    }\n    else {\n        let srcMarker = -1 /* AttributeMarker.ImplicitAttributes */;\n        for (let i = 0; i < src.length; i++) {\n            const item = src[i];\n            if (typeof item === 'number') {\n                srcMarker = item;\n            }\n            else {\n                if (srcMarker === 0 /* AttributeMarker.NamespaceURI */) {\n                    // Case where we need to consume `key1`, `key2`, `value` items.\n                }\n                else if (srcMarker === -1 /* AttributeMarker.ImplicitAttributes */ ||\n                    srcMarker === 2 /* AttributeMarker.Styles */) {\n                    // Case where we have to consume `key1` and `value` only.\n                    mergeHostAttribute(dst, srcMarker, item, null, src[++i]);\n                }\n                else {\n                    // Case where we have to consume `key1` only.\n                    mergeHostAttribute(dst, srcMarker, item, null, null);\n                }\n            }\n        }\n    }\n    return dst;\n}\n/**\n * Append `key`/`value` to existing `TAttributes` taking region marker and duplicates into account.\n *\n * @param dst `TAttributes` to append to.\n * @param marker Region where the `key`/`value` should be added.\n * @param key1 Key to add to `TAttributes`\n * @param key2 Key to add to `TAttributes` (in case of `AttributeMarker.NamespaceURI`)\n * @param value Value to add or to overwrite to `TAttributes` Only used if `marker` is not Class.\n */\nfunction mergeHostAttribute(dst, marker, key1, key2, value) {\n    let i = 0;\n    // Assume that new markers will be inserted at the end.\n    let markerInsertPosition = dst.length;\n    // scan until correct type.\n    if (marker === -1 /* AttributeMarker.ImplicitAttributes */) {\n        markerInsertPosition = -1;\n    }\n    else {\n        while (i < dst.length) {\n            const dstValue = dst[i++];\n            if (typeof dstValue === 'number') {\n                if (dstValue === marker) {\n                    markerInsertPosition = -1;\n                    break;\n                }\n                else if (dstValue > marker) {\n                    // We need to save this as we want the markers to be inserted in specific order.\n                    markerInsertPosition = i - 1;\n                    break;\n                }\n            }\n        }\n    }\n    // search until you find place of insertion\n    while (i < dst.length) {\n        const item = dst[i];\n        if (typeof item === 'number') {\n            // since `i` started as the index after the marker, we did not find it if we are at the next\n            // marker\n            break;\n        }\n        else if (item === key1) {\n            // We already have same token\n            if (key2 === null) {\n                if (value !== null) {\n                    dst[i + 1] = value;\n                }\n                return;\n            }\n            else if (key2 === dst[i + 1]) {\n                dst[i + 2] = value;\n                return;\n            }\n        }\n        // Increment counter.\n        i++;\n        if (key2 !== null)\n            i++;\n        if (value !== null)\n            i++;\n    }\n    // insert at location.\n    if (markerInsertPosition !== -1) {\n        dst.splice(markerInsertPosition, 0, marker);\n        i = markerInsertPosition + 1;\n    }\n    dst.splice(i++, 0, key1);\n    if (key2 !== null) {\n        dst.splice(i++, 0, key2);\n    }\n    if (value !== null) {\n        dst.splice(i++, 0, value);\n    }\n}\n\n/// Parent Injector Utils ///////////////////////////////////////////////////////////////\nfunction hasParentInjector(parentLocation) {\n    return parentLocation !== NO_PARENT_INJECTOR;\n}\nfunction getParentInjectorIndex(parentLocation) {\n    ngDevMode && assertNumber(parentLocation, 'Number expected');\n    ngDevMode && assertNotEqual(parentLocation, -1, 'Not a valid state.');\n    const parentInjectorIndex = parentLocation & 32767 /* RelativeInjectorLocationFlags.InjectorIndexMask */;\n    ngDevMode &&\n        assertGreaterThan(parentInjectorIndex, HEADER_OFFSET, 'Parent injector must be pointing past HEADER_OFFSET.');\n    return parentLocation & 32767 /* RelativeInjectorLocationFlags.InjectorIndexMask */;\n}\nfunction getParentInjectorViewOffset(parentLocation) {\n    return parentLocation >> 16 /* RelativeInjectorLocationFlags.ViewOffsetShift */;\n}\n/**\n * Unwraps a parent injector location number to find the view offset from the current injector,\n * then walks up the declaration view tree until the view is found that contains the parent\n * injector.\n *\n * @param location The location of the parent injector, which contains the view offset\n * @param startView The LView instance from which to start walking up the view tree\n * @returns The LView instance that contains the parent injector\n */\nfunction getParentInjectorView(location, startView) {\n    let viewOffset = getParentInjectorViewOffset(location);\n    let parentView = startView;\n    // For most cases, the parent injector can be found on the host node (e.g. for component\n    // or container), but we must keep the loop here to support the rarer case of deeply nested\n    // <ng-template> tags or inline views, where the parent injector might live many views\n    // above the child injector.\n    while (viewOffset > 0) {\n        parentView = parentView[DECLARATION_VIEW];\n        viewOffset--;\n    }\n    return parentView;\n}\n\n/**\n * Defines if the call to `inject` should include `viewProviders` in its resolution.\n *\n * This is set to true when we try to instantiate a component. This value is reset in\n * `getNodeInjectable` to a value which matches the declaration location of the token about to be\n * instantiated. This is done so that if we are injecting a token which was declared outside of\n * `viewProviders` we don't accidentally pull `viewProviders` in.\n *\n * Example:\n *\n * ```\n * @Injectable()\n * class MyService {\n *   constructor(public value: String) {}\n * }\n *\n * @Component({\n *   providers: [\n *     MyService,\n *     {provide: String, value: 'providers' }\n *   ]\n *   viewProviders: [\n *     {provide: String, value: 'viewProviders'}\n *   ]\n * })\n * class MyComponent {\n *   constructor(myService: MyService, value: String) {\n *     // We expect that Component can see into `viewProviders`.\n *     expect(value).toEqual('viewProviders');\n *     // `MyService` was not declared in `viewProviders` hence it can't see it.\n *     expect(myService.value).toEqual('providers');\n *   }\n * }\n *\n * ```\n */\nlet includeViewProviders = true;\nfunction setIncludeViewProviders(v) {\n    const oldValue = includeViewProviders;\n    includeViewProviders = v;\n    return oldValue;\n}\n/**\n * The number of slots in each bloom filter (used by DI). The larger this number, the fewer\n * directives that will share slots, and thus, the fewer false positives when checking for\n * the existence of a directive.\n */\nconst BLOOM_SIZE = 256;\nconst BLOOM_MASK = BLOOM_SIZE - 1;\n/**\n * The number of bits that is represented by a single bloom bucket. JS bit operations are 32 bits,\n * so each bucket represents 32 distinct tokens which accounts for log2(32) = 5 bits of a bloom hash\n * number.\n */\nconst BLOOM_BUCKET_BITS = 5;\n/** Counter used to generate unique IDs for directives. */\nlet nextNgElementId = 0;\n/** Value used when something wasn't found by an injector. */\nconst NOT_FOUND = {};\n/**\n * Registers this directive as present in its node's injector by flipping the directive's\n * corresponding bit in the injector's bloom filter.\n *\n * @param injectorIndex The index of the node injector where this token should be registered\n * @param tView The TView for the injector's bloom filters\n * @param type The directive token to register\n */\nfunction bloomAdd(injectorIndex, tView, type) {\n    ngDevMode && assertEqual(tView.firstCreatePass, true, 'expected firstCreatePass to be true');\n    let id;\n    if (typeof type === 'string') {\n        id = type.charCodeAt(0) || 0;\n    }\n    else if (type.hasOwnProperty(NG_ELEMENT_ID)) {\n        id = type[NG_ELEMENT_ID];\n    }\n    // Set a unique ID on the directive type, so if something tries to inject the directive,\n    // we can easily retrieve the ID and hash it into the bloom bit that should be checked.\n    if (id == null) {\n        id = type[NG_ELEMENT_ID] = nextNgElementId++;\n    }\n    // We only have BLOOM_SIZE (256) slots in our bloom filter (8 buckets * 32 bits each),\n    // so all unique IDs must be modulo-ed into a number from 0 - 255 to fit into the filter.\n    const bloomHash = id & BLOOM_MASK;\n    // Create a mask that targets the specific bit associated with the directive.\n    // JS bit operations are 32 bits, so this will be a number between 2^0 and 2^31, corresponding\n    // to bit positions 0 - 31 in a 32 bit integer.\n    const mask = 1 << bloomHash;\n    // Each bloom bucket in `tData` represents `BLOOM_BUCKET_BITS` number of bits of `bloomHash`.\n    // Any bits in `bloomHash` beyond `BLOOM_BUCKET_BITS` indicate the bucket offset that the mask\n    // should be written to.\n    tView.data[injectorIndex + (bloomHash >> BLOOM_BUCKET_BITS)] |= mask;\n}\n/**\n * Creates (or gets an existing) injector for a given element or container.\n *\n * @param tNode for which an injector should be retrieved / created.\n * @param lView View where the node is stored\n * @returns Node injector\n */\nfunction getOrCreateNodeInjectorForNode(tNode, lView) {\n    const existingInjectorIndex = getInjectorIndex(tNode, lView);\n    if (existingInjectorIndex !== -1) {\n        return existingInjectorIndex;\n    }\n    const tView = lView[TVIEW];\n    if (tView.firstCreatePass) {\n        tNode.injectorIndex = lView.length;\n        insertBloom(tView.data, tNode); // foundation for node bloom\n        insertBloom(lView, null); // foundation for cumulative bloom\n        insertBloom(tView.blueprint, null);\n    }\n    const parentLoc = getParentInjectorLocation(tNode, lView);\n    const injectorIndex = tNode.injectorIndex;\n    // If a parent injector can't be found, its location is set to -1.\n    // In that case, we don't need to set up a cumulative bloom\n    if (hasParentInjector(parentLoc)) {\n        const parentIndex = getParentInjectorIndex(parentLoc);\n        const parentLView = getParentInjectorView(parentLoc, lView);\n        const parentData = parentLView[TVIEW].data;\n        // Creates a cumulative bloom filter that merges the parent's bloom filter\n        // and its own cumulative bloom (which contains tokens for all ancestors)\n        for (let i = 0; i < 8 /* NodeInjectorOffset.BLOOM_SIZE */; i++) {\n            lView[injectorIndex + i] = parentLView[parentIndex + i] | parentData[parentIndex + i];\n        }\n    }\n    lView[injectorIndex + 8 /* NodeInjectorOffset.PARENT */] = parentLoc;\n    return injectorIndex;\n}\nfunction insertBloom(arr, footer) {\n    arr.push(0, 0, 0, 0, 0, 0, 0, 0, footer);\n}\nfunction getInjectorIndex(tNode, lView) {\n    if (tNode.injectorIndex === -1 ||\n        // If the injector index is the same as its parent's injector index, then the index has been\n        // copied down from the parent node. No injector has been created yet on this node.\n        (tNode.parent && tNode.parent.injectorIndex === tNode.injectorIndex) ||\n        // After the first template pass, the injector index might exist but the parent values\n        // might not have been calculated yet for this instance\n        lView[tNode.injectorIndex + 8 /* NodeInjectorOffset.PARENT */] === null) {\n        return -1;\n    }\n    else {\n        ngDevMode && assertIndexInRange(lView, tNode.injectorIndex);\n        return tNode.injectorIndex;\n    }\n}\n/**\n * Finds the index of the parent injector, with a view offset if applicable. Used to set the\n * parent injector initially.\n *\n * @returns Returns a number that is the combination of the number of LViews that we have to go up\n * to find the LView containing the parent inject AND the index of the injector within that LView.\n */\nfunction getParentInjectorLocation(tNode, lView) {\n    if (tNode.parent && tNode.parent.injectorIndex !== -1) {\n        // If we have a parent `TNode` and there is an injector associated with it we are done, because\n        // the parent injector is within the current `LView`.\n        return tNode.parent.injectorIndex; // ViewOffset is 0\n    }\n    // When parent injector location is computed it may be outside of the current view. (ie it could\n    // be pointing to a declared parent location). This variable stores number of declaration parents\n    // we need to walk up in order to find the parent injector location.\n    let declarationViewOffset = 0;\n    let parentTNode = null;\n    let lViewCursor = lView;\n    // The parent injector is not in the current `LView`. We will have to walk the declared parent\n    // `LView` hierarchy and look for it. If we walk of the top, that means that there is no parent\n    // `NodeInjector`.\n    while (lViewCursor !== null) {\n        parentTNode = getTNodeFromLView(lViewCursor);\n        if (parentTNode === null) {\n            // If we have no parent, than we are done.\n            return NO_PARENT_INJECTOR;\n        }\n        ngDevMode && parentTNode && assertTNodeForLView(parentTNode, lViewCursor[DECLARATION_VIEW]);\n        // Every iteration of the loop requires that we go to the declared parent.\n        declarationViewOffset++;\n        lViewCursor = lViewCursor[DECLARATION_VIEW];\n        if (parentTNode.injectorIndex !== -1) {\n            // We found a NodeInjector which points to something.\n            return (parentTNode.injectorIndex |\n                (declarationViewOffset << 16 /* RelativeInjectorLocationFlags.ViewOffsetShift */));\n        }\n    }\n    return NO_PARENT_INJECTOR;\n}\n/**\n * Makes a type or an injection token public to the DI system by adding it to an\n * injector's bloom filter.\n *\n * @param di The node injector in which a directive will be added\n * @param token The type or the injection token to be made public\n */\nfunction diPublicInInjector(injectorIndex, tView, token) {\n    bloomAdd(injectorIndex, tView, token);\n}\n/**\n * Inject static attribute value into directive constructor.\n *\n * This method is used with `factory` functions which are generated as part of\n * `defineDirective` or `defineComponent`. The method retrieves the static value\n * of an attribute. (Dynamic attributes are not supported since they are not resolved\n *  at the time of injection and can change over time.)\n *\n * # Example\n * Given:\n * ```\n * @Component(...)\n * class MyComponent {\n *   constructor(@Attribute('title') title: string) { ... }\n * }\n * ```\n * When instantiated with\n * ```\n * <my-component title=\"Hello\"></my-component>\n * ```\n *\n * Then factory method generated is:\n * ```\n * MyComponent.ɵcmp = defineComponent({\n *   factory: () => new MyComponent(injectAttribute('title'))\n *   ...\n * })\n * ```\n *\n * @publicApi\n */\nfunction injectAttributeImpl(tNode, attrNameToInject) {\n    ngDevMode && assertTNodeType(tNode, 12 /* TNodeType.AnyContainer */ | 3 /* TNodeType.AnyRNode */);\n    ngDevMode && assertDefined(tNode, 'expecting tNode');\n    if (attrNameToInject === 'class') {\n        return tNode.classes;\n    }\n    if (attrNameToInject === 'style') {\n        return tNode.styles;\n    }\n    const attrs = tNode.attrs;\n    if (attrs) {\n        const attrsLength = attrs.length;\n        let i = 0;\n        while (i < attrsLength) {\n            const value = attrs[i];\n            // If we hit a `Bindings` or `Template` marker then we are done.\n            if (isNameOnlyAttributeMarker(value))\n                break;\n            // Skip namespaced attributes\n            if (value === 0 /* AttributeMarker.NamespaceURI */) {\n                // we skip the next two values\n                // as namespaced attributes looks like\n                // [..., AttributeMarker.NamespaceURI, 'http://someuri.com/test', 'test:exist',\n                // 'existValue', ...]\n                i = i + 2;\n            }\n            else if (typeof value === 'number') {\n                // Skip to the first value of the marked attribute.\n                i++;\n                while (i < attrsLength && typeof attrs[i] === 'string') {\n                    i++;\n                }\n            }\n            else if (value === attrNameToInject) {\n                return attrs[i + 1];\n            }\n            else {\n                i = i + 2;\n            }\n        }\n    }\n    return null;\n}\nfunction notFoundValueOrThrow(notFoundValue, token, flags) {\n    if ((flags & InjectFlags.Optional) || notFoundValue !== undefined) {\n        return notFoundValue;\n    }\n    else {\n        throwProviderNotFoundError(token, 'NodeInjector');\n    }\n}\n/**\n * Returns the value associated to the given token from the ModuleInjector or throws exception\n *\n * @param lView The `LView` that contains the `tNode`\n * @param token The token to look for\n * @param flags Injection flags\n * @param notFoundValue The value to return when the injection flags is `InjectFlags.Optional`\n * @returns the value from the injector or throws an exception\n */\nfunction lookupTokenUsingModuleInjector(lView, token, flags, notFoundValue) {\n    if ((flags & InjectFlags.Optional) && notFoundValue === undefined) {\n        // This must be set or the NullInjector will throw for optional deps\n        notFoundValue = null;\n    }\n    if ((flags & (InjectFlags.Self | InjectFlags.Host)) === 0) {\n        const moduleInjector = lView[INJECTOR$1];\n        // switch to `injectInjectorOnly` implementation for module injector, since module injector\n        // should not have access to Component/Directive DI scope (that may happen through\n        // `directiveInject` implementation)\n        const previousInjectImplementation = setInjectImplementation(undefined);\n        try {\n            if (moduleInjector) {\n                return moduleInjector.get(token, notFoundValue, flags & InjectFlags.Optional);\n            }\n            else {\n                return injectRootLimpMode(token, notFoundValue, flags & InjectFlags.Optional);\n            }\n        }\n        finally {\n            setInjectImplementation(previousInjectImplementation);\n        }\n    }\n    return notFoundValueOrThrow(notFoundValue, token, flags);\n}\n/**\n * Returns the value associated to the given token from the NodeInjectors => ModuleInjector.\n *\n * Look for the injector providing the token by walking up the node injector tree and then\n * the module injector tree.\n *\n * This function patches `token` with `__NG_ELEMENT_ID__` which contains the id for the bloom\n * filter. `-1` is reserved for injecting `Injector` (implemented by `NodeInjector`)\n *\n * @param tNode The Node where the search for the injector should start\n * @param lView The `LView` that contains the `tNode`\n * @param token The token to look for\n * @param flags Injection flags\n * @param notFoundValue The value to return when the injection flags is `InjectFlags.Optional`\n * @returns the value from the injector, `null` when not found, or `notFoundValue` if provided\n */\nfunction getOrCreateInjectable(tNode, lView, token, flags = InjectFlags.Default, notFoundValue) {\n    if (tNode !== null) {\n        // If the view or any of its ancestors have an embedded\n        // view injector, we have to look it up there first.\n        if (lView[FLAGS] & 1024 /* LViewFlags.HasEmbeddedViewInjector */) {\n            const embeddedInjectorValue = lookupTokenUsingEmbeddedInjector(tNode, lView, token, flags, NOT_FOUND);\n            if (embeddedInjectorValue !== NOT_FOUND) {\n                return embeddedInjectorValue;\n            }\n        }\n        // Otherwise try the node injector.\n        const value = lookupTokenUsingNodeInjector(tNode, lView, token, flags, NOT_FOUND);\n        if (value !== NOT_FOUND) {\n            return value;\n        }\n    }\n    // Finally, fall back to the module injector.\n    return lookupTokenUsingModuleInjector(lView, token, flags, notFoundValue);\n}\n/**\n * Returns the value associated to the given token from the node injector.\n *\n * @param tNode The Node where the search for the injector should start\n * @param lView The `LView` that contains the `tNode`\n * @param token The token to look for\n * @param flags Injection flags\n * @param notFoundValue The value to return when the injection flags is `InjectFlags.Optional`\n * @returns the value from the injector, `null` when not found, or `notFoundValue` if provided\n */\nfunction lookupTokenUsingNodeInjector(tNode, lView, token, flags, notFoundValue) {\n    const bloomHash = bloomHashBitOrFactory(token);\n    // If the ID stored here is a function, this is a special object like ElementRef or TemplateRef\n    // so just call the factory function to create it.\n    if (typeof bloomHash === 'function') {\n        if (!enterDI(lView, tNode, flags)) {\n            // Failed to enter DI, try module injector instead. If a token is injected with the @Host\n            // flag, the module injector is not searched for that token in Ivy.\n            return (flags & InjectFlags.Host) ?\n                notFoundValueOrThrow(notFoundValue, token, flags) :\n                lookupTokenUsingModuleInjector(lView, token, flags, notFoundValue);\n        }\n        try {\n            const value = bloomHash(flags);\n            if (value == null && !(flags & InjectFlags.Optional)) {\n                throwProviderNotFoundError(token);\n            }\n            else {\n                return value;\n            }\n        }\n        finally {\n            leaveDI();\n        }\n    }\n    else if (typeof bloomHash === 'number') {\n        // A reference to the previous injector TView that was found while climbing the element\n        // injector tree. This is used to know if viewProviders can be accessed on the current\n        // injector.\n        let previousTView = null;\n        let injectorIndex = getInjectorIndex(tNode, lView);\n        let parentLocation = NO_PARENT_INJECTOR;\n        let hostTElementNode = flags & InjectFlags.Host ? lView[DECLARATION_COMPONENT_VIEW][T_HOST] : null;\n        // If we should skip this injector, or if there is no injector on this node, start by\n        // searching the parent injector.\n        if (injectorIndex === -1 || flags & InjectFlags.SkipSelf) {\n            parentLocation = injectorIndex === -1 ? getParentInjectorLocation(tNode, lView) :\n                lView[injectorIndex + 8 /* NodeInjectorOffset.PARENT */];\n            if (parentLocation === NO_PARENT_INJECTOR || !shouldSearchParent(flags, false)) {\n                injectorIndex = -1;\n            }\n            else {\n                previousTView = lView[TVIEW];\n                injectorIndex = getParentInjectorIndex(parentLocation);\n                lView = getParentInjectorView(parentLocation, lView);\n            }\n        }\n        // Traverse up the injector tree until we find a potential match or until we know there\n        // *isn't* a match.\n        while (injectorIndex !== -1) {\n            ngDevMode && assertNodeInjector(lView, injectorIndex);\n            // Check the current injector. If it matches, see if it contains token.\n            const tView = lView[TVIEW];\n            ngDevMode &&\n                assertTNodeForLView(tView.data[injectorIndex + 8 /* NodeInjectorOffset.TNODE */], lView);\n            if (bloomHasToken(bloomHash, injectorIndex, tView.data)) {\n                // At this point, we have an injector which *may* contain the token, so we step through\n                // the providers and directives associated with the injector's corresponding node to get\n                // the instance.\n                const instance = searchTokensOnInjector(injectorIndex, lView, token, previousTView, flags, hostTElementNode);\n                if (instance !== NOT_FOUND) {\n                    return instance;\n                }\n            }\n            parentLocation = lView[injectorIndex + 8 /* NodeInjectorOffset.PARENT */];\n            if (parentLocation !== NO_PARENT_INJECTOR &&\n                shouldSearchParent(flags, lView[TVIEW].data[injectorIndex + 8 /* NodeInjectorOffset.TNODE */] === hostTElementNode) &&\n                bloomHasToken(bloomHash, injectorIndex, lView)) {\n                // The def wasn't found anywhere on this node, so it was a false positive.\n                // Traverse up the tree and continue searching.\n                previousTView = tView;\n                injectorIndex = getParentInjectorIndex(parentLocation);\n                lView = getParentInjectorView(parentLocation, lView);\n            }\n            else {\n                // If we should not search parent OR If the ancestor bloom filter value does not have the\n                // bit corresponding to the directive we can give up on traversing up to find the specific\n                // injector.\n                injectorIndex = -1;\n            }\n        }\n    }\n    return notFoundValue;\n}\nfunction searchTokensOnInjector(injectorIndex, lView, token, previousTView, flags, hostTElementNode) {\n    const currentTView = lView[TVIEW];\n    const tNode = currentTView.data[injectorIndex + 8 /* NodeInjectorOffset.TNODE */];\n    // First, we need to determine if view providers can be accessed by the starting element.\n    // There are two possibilities\n    const canAccessViewProviders = previousTView == null ?\n        // 1) This is the first invocation `previousTView == null` which means that we are at the\n        // `TNode` of where injector is starting to look. In such a case the only time we are allowed\n        // to look into the ViewProviders is if:\n        // - we are on a component\n        // - AND the injector set `includeViewProviders` to true (implying that the token can see\n        // ViewProviders because it is the Component or a Service which itself was declared in\n        // ViewProviders)\n        (isComponentHost(tNode) && includeViewProviders) :\n        // 2) `previousTView != null` which means that we are now walking across the parent nodes.\n        // In such a case we are only allowed to look into the ViewProviders if:\n        // - We just crossed from child View to Parent View `previousTView != currentTView`\n        // - AND the parent TNode is an Element.\n        // This means that we just came from the Component's View and therefore are allowed to see\n        // into the ViewProviders.\n        (previousTView != currentTView && ((tNode.type & 3 /* TNodeType.AnyRNode */) !== 0));\n    // This special case happens when there is a @host on the inject and when we are searching\n    // on the host element node.\n    const isHostSpecialCase = (flags & InjectFlags.Host) && hostTElementNode === tNode;\n    const injectableIdx = locateDirectiveOrProvider(tNode, currentTView, token, canAccessViewProviders, isHostSpecialCase);\n    if (injectableIdx !== null) {\n        return getNodeInjectable(lView, currentTView, injectableIdx, tNode);\n    }\n    else {\n        return NOT_FOUND;\n    }\n}\n/**\n * Searches for the given token among the node's directives and providers.\n *\n * @param tNode TNode on which directives are present.\n * @param tView The tView we are currently processing\n * @param token Provider token or type of a directive to look for.\n * @param canAccessViewProviders Whether view providers should be considered.\n * @param isHostSpecialCase Whether the host special case applies.\n * @returns Index of a found directive or provider, or null when none found.\n */\nfunction locateDirectiveOrProvider(tNode, tView, token, canAccessViewProviders, isHostSpecialCase) {\n    const nodeProviderIndexes = tNode.providerIndexes;\n    const tInjectables = tView.data;\n    const injectablesStart = nodeProviderIndexes & 1048575 /* TNodeProviderIndexes.ProvidersStartIndexMask */;\n    const directivesStart = tNode.directiveStart;\n    const directiveEnd = tNode.directiveEnd;\n    const cptViewProvidersCount = nodeProviderIndexes >> 20 /* TNodeProviderIndexes.CptViewProvidersCountShift */;\n    const startingIndex = canAccessViewProviders ? injectablesStart : injectablesStart + cptViewProvidersCount;\n    // When the host special case applies, only the viewProviders and the component are visible\n    const endIndex = isHostSpecialCase ? injectablesStart + cptViewProvidersCount : directiveEnd;\n    for (let i = startingIndex; i < endIndex; i++) {\n        const providerTokenOrDef = tInjectables[i];\n        if (i < directivesStart && token === providerTokenOrDef ||\n            i >= directivesStart && providerTokenOrDef.type === token) {\n            return i;\n        }\n    }\n    if (isHostSpecialCase) {\n        const dirDef = tInjectables[directivesStart];\n        if (dirDef && isComponentDef(dirDef) && dirDef.type === token) {\n            return directivesStart;\n        }\n    }\n    return null;\n}\n/**\n * Retrieve or instantiate the injectable from the `LView` at particular `index`.\n *\n * This function checks to see if the value has already been instantiated and if so returns the\n * cached `injectable`. Otherwise if it detects that the value is still a factory it\n * instantiates the `injectable` and caches the value.\n */\nfunction getNodeInjectable(lView, tView, index, tNode) {\n    let value = lView[index];\n    const tData = tView.data;\n    if (isFactory(value)) {\n        const factory = value;\n        if (factory.resolving) {\n            throwCyclicDependencyError(stringifyForError(tData[index]));\n        }\n        const previousIncludeViewProviders = setIncludeViewProviders(factory.canSeeViewProviders);\n        factory.resolving = true;\n        const previousInjectImplementation = factory.injectImpl ? setInjectImplementation(factory.injectImpl) : null;\n        const success = enterDI(lView, tNode, InjectFlags.Default);\n        ngDevMode &&\n            assertEqual(success, true, 'Because flags do not contain \\`SkipSelf\\' we expect this to always succeed.');\n        try {\n            value = lView[index] = factory.factory(undefined, tData, lView, tNode);\n            // This code path is hit for both directives and providers.\n            // For perf reasons, we want to avoid searching for hooks on providers.\n            // It does no harm to try (the hooks just won't exist), but the extra\n            // checks are unnecessary and this is a hot path. So we check to see\n            // if the index of the dependency is in the directive range for this\n            // tNode. If it's not, we know it's a provider and skip hook registration.\n            if (tView.firstCreatePass && index >= tNode.directiveStart) {\n                ngDevMode && assertDirectiveDef(tData[index]);\n                registerPreOrderHooks(index, tData[index], tView);\n            }\n        }\n        finally {\n            previousInjectImplementation !== null &&\n                setInjectImplementation(previousInjectImplementation);\n            setIncludeViewProviders(previousIncludeViewProviders);\n            factory.resolving = false;\n            leaveDI();\n        }\n    }\n    return value;\n}\n/**\n * Returns the bit in an injector's bloom filter that should be used to determine whether or not\n * the directive might be provided by the injector.\n *\n * When a directive is public, it is added to the bloom filter and given a unique ID that can be\n * retrieved on the Type. When the directive isn't public or the token is not a directive `null`\n * is returned as the node injector can not possibly provide that token.\n *\n * @param token the injection token\n * @returns the matching bit to check in the bloom filter or `null` if the token is not known.\n *   When the returned value is negative then it represents special values such as `Injector`.\n */\nfunction bloomHashBitOrFactory(token) {\n    ngDevMode && assertDefined(token, 'token must be defined');\n    if (typeof token === 'string') {\n        return token.charCodeAt(0) || 0;\n    }\n    const tokenId = \n    // First check with `hasOwnProperty` so we don't get an inherited ID.\n    token.hasOwnProperty(NG_ELEMENT_ID) ? token[NG_ELEMENT_ID] : undefined;\n    // Negative token IDs are used for special objects such as `Injector`\n    if (typeof tokenId === 'number') {\n        if (tokenId >= 0) {\n            return tokenId & BLOOM_MASK;\n        }\n        else {\n            ngDevMode &&\n                assertEqual(tokenId, -1 /* InjectorMarkers.Injector */, 'Expecting to get Special Injector Id');\n            return createNodeInjector;\n        }\n    }\n    else {\n        return tokenId;\n    }\n}\nfunction bloomHasToken(bloomHash, injectorIndex, injectorView) {\n    // Create a mask that targets the specific bit associated with the directive we're looking for.\n    // JS bit operations are 32 bits, so this will be a number between 2^0 and 2^31, corresponding\n    // to bit positions 0 - 31 in a 32 bit integer.\n    const mask = 1 << bloomHash;\n    // Each bloom bucket in `injectorView` represents `BLOOM_BUCKET_BITS` number of bits of\n    // `bloomHash`. Any bits in `bloomHash` beyond `BLOOM_BUCKET_BITS` indicate the bucket offset\n    // that should be used.\n    const value = injectorView[injectorIndex + (bloomHash >> BLOOM_BUCKET_BITS)];\n    // If the bloom filter value has the bit corresponding to the directive's bloomBit flipped on,\n    // this injector is a potential match.\n    return !!(value & mask);\n}\n/** Returns true if flags prevent parent injector from being searched for tokens */\nfunction shouldSearchParent(flags, isFirstHostTNode) {\n    return !(flags & InjectFlags.Self) && !(flags & InjectFlags.Host && isFirstHostTNode);\n}\nclass NodeInjector {\n    constructor(_tNode, _lView) {\n        this._tNode = _tNode;\n        this._lView = _lView;\n    }\n    get(token, notFoundValue, flags) {\n        return getOrCreateInjectable(this._tNode, this._lView, token, convertToBitFlags(flags), notFoundValue);\n    }\n}\n/** Creates a `NodeInjector` for the current node. */\nfunction createNodeInjector() {\n    return new NodeInjector(getCurrentTNode(), getLView());\n}\n/**\n * @codeGenApi\n */\nfunction ɵɵgetInheritedFactory(type) {\n    return noSideEffects(() => {\n        const ownConstructor = type.prototype.constructor;\n        const ownFactory = ownConstructor[NG_FACTORY_DEF] || getFactoryOf(ownConstructor);\n        const objectPrototype = Object.prototype;\n        let parent = Object.getPrototypeOf(type.prototype).constructor;\n        // Go up the prototype until we hit `Object`.\n        while (parent && parent !== objectPrototype) {\n            const factory = parent[NG_FACTORY_DEF] || getFactoryOf(parent);\n            // If we hit something that has a factory and the factory isn't the same as the type,\n            // we've found the inherited factory. Note the check that the factory isn't the type's\n            // own factory is redundant in most cases, but if the user has custom decorators on the\n            // class, this lookup will start one level down in the prototype chain, causing us to\n            // find the own factory first and potentially triggering an infinite loop downstream.\n            if (factory && factory !== ownFactory) {\n                return factory;\n            }\n            parent = Object.getPrototypeOf(parent);\n        }\n        // There is no factory defined. Either this was improper usage of inheritance\n        // (no Angular decorator on the superclass) or there is no constructor at all\n        // in the inheritance chain. Since the two cases cannot be distinguished, the\n        // latter has to be assumed.\n        return t => new t();\n    });\n}\nfunction getFactoryOf(type) {\n    if (isForwardRef(type)) {\n        return () => {\n            const factory = getFactoryOf(resolveForwardRef(type));\n            return factory && factory();\n        };\n    }\n    return getFactoryDef(type);\n}\n/**\n * Returns a value from the closest embedded or node injector.\n *\n * @param tNode The Node where the search for the injector should start\n * @param lView The `LView` that contains the `tNode`\n * @param token The token to look for\n * @param flags Injection flags\n * @param notFoundValue The value to return when the injection flags is `InjectFlags.Optional`\n * @returns the value from the injector, `null` when not found, or `notFoundValue` if provided\n */\nfunction lookupTokenUsingEmbeddedInjector(tNode, lView, token, flags, notFoundValue) {\n    let currentTNode = tNode;\n    let currentLView = lView;\n    // When an LView with an embedded view injector is inserted, it'll likely be interlaced with\n    // nodes who may have injectors (e.g. node injector -> embedded view injector -> node injector).\n    // Since the bloom filters for the node injectors have already been constructed and we don't\n    // have a way of extracting the records from an injector, the only way to maintain the correct\n    // hierarchy when resolving the value is to walk it node-by-node while attempting to resolve\n    // the token at each level.\n    while (currentTNode !== null && currentLView !== null &&\n        (currentLView[FLAGS] & 1024 /* LViewFlags.HasEmbeddedViewInjector */) &&\n        !(currentLView[FLAGS] & 256 /* LViewFlags.IsRoot */)) {\n        ngDevMode && assertTNodeForLView(currentTNode, currentLView);\n        // Note that this lookup on the node injector is using the `Self` flag, because\n        // we don't want the node injector to look at any parent injectors since we\n        // may hit the embedded view injector first.\n        const nodeInjectorValue = lookupTokenUsingNodeInjector(currentTNode, currentLView, token, flags | InjectFlags.Self, NOT_FOUND);\n        if (nodeInjectorValue !== NOT_FOUND) {\n            return nodeInjectorValue;\n        }\n        // Has an explicit type due to a TS bug: https://github.com/microsoft/TypeScript/issues/33191\n        let parentTNode = currentTNode.parent;\n        // `TNode.parent` includes the parent within the current view only. If it doesn't exist,\n        // it means that we've hit the view boundary and we need to go up to the next view.\n        if (!parentTNode) {\n            // Before we go to the next LView, check if the token exists on the current embedded injector.\n            const embeddedViewInjector = currentLView[EMBEDDED_VIEW_INJECTOR];\n            if (embeddedViewInjector) {\n                const embeddedViewInjectorValue = embeddedViewInjector.get(token, NOT_FOUND, flags);\n                if (embeddedViewInjectorValue !== NOT_FOUND) {\n                    return embeddedViewInjectorValue;\n                }\n            }\n            // Otherwise keep going up the tree.\n            parentTNode = getTNodeFromLView(currentLView);\n            currentLView = currentLView[DECLARATION_VIEW];\n        }\n        currentTNode = parentTNode;\n    }\n    return notFoundValue;\n}\n/** Gets the TNode associated with an LView inside of the declaration view. */\nfunction getTNodeFromLView(lView) {\n    const tView = lView[TVIEW];\n    const tViewType = tView.type;\n    // The parent pointer differs based on `TView.type`.\n    if (tViewType === 2 /* TViewType.Embedded */) {\n        ngDevMode && assertDefined(tView.declTNode, 'Embedded TNodes should have declaration parents.');\n        return tView.declTNode;\n    }\n    else if (tViewType === 1 /* TViewType.Component */) {\n        // Components don't have `TView.declTNode` because each instance of component could be\n        // inserted in different location, hence `TView.declTNode` is meaningless.\n        return lView[T_HOST];\n    }\n    return null;\n}\n\n/**\n * Facade for the attribute injection from DI.\n *\n * @codeGenApi\n */\nfunction ɵɵinjectAttribute(attrNameToInject) {\n    return injectAttributeImpl(getCurrentTNode(), attrNameToInject);\n}\n\nconst ANNOTATIONS = '__annotations__';\nconst PARAMETERS = '__parameters__';\nconst PROP_METADATA = '__prop__metadata__';\n/**\n * @suppress {globalThis}\n */\nfunction makeDecorator(name, props, parentClass, additionalProcessing, typeFn) {\n    return noSideEffects(() => {\n        const metaCtor = makeMetadataCtor(props);\n        function DecoratorFactory(...args) {\n            if (this instanceof DecoratorFactory) {\n                metaCtor.call(this, ...args);\n                return this;\n            }\n            const annotationInstance = new DecoratorFactory(...args);\n            return function TypeDecorator(cls) {\n                if (typeFn)\n                    typeFn(cls, ...args);\n                // Use of Object.defineProperty is important since it creates non-enumerable property which\n                // prevents the property is copied during subclassing.\n                const annotations = cls.hasOwnProperty(ANNOTATIONS) ?\n                    cls[ANNOTATIONS] :\n                    Object.defineProperty(cls, ANNOTATIONS, { value: [] })[ANNOTATIONS];\n                annotations.push(annotationInstance);\n                if (additionalProcessing)\n                    additionalProcessing(cls);\n                return cls;\n            };\n        }\n        if (parentClass) {\n            DecoratorFactory.prototype = Object.create(parentClass.prototype);\n        }\n        DecoratorFactory.prototype.ngMetadataName = name;\n        DecoratorFactory.annotationCls = DecoratorFactory;\n        return DecoratorFactory;\n    });\n}\nfunction makeMetadataCtor(props) {\n    return function ctor(...args) {\n        if (props) {\n            const values = props(...args);\n            for (const propName in values) {\n                this[propName] = values[propName];\n            }\n        }\n    };\n}\nfunction makeParamDecorator(name, props, parentClass) {\n    return noSideEffects(() => {\n        const metaCtor = makeMetadataCtor(props);\n        function ParamDecoratorFactory(...args) {\n            if (this instanceof ParamDecoratorFactory) {\n                metaCtor.apply(this, args);\n                return this;\n            }\n            const annotationInstance = new ParamDecoratorFactory(...args);\n            ParamDecorator.annotation = annotationInstance;\n            return ParamDecorator;\n            function ParamDecorator(cls, unusedKey, index) {\n                // Use of Object.defineProperty is important since it creates non-enumerable property which\n                // prevents the property is copied during subclassing.\n                const parameters = cls.hasOwnProperty(PARAMETERS) ?\n                    cls[PARAMETERS] :\n                    Object.defineProperty(cls, PARAMETERS, { value: [] })[PARAMETERS];\n                // there might be gaps if some in between parameters do not have annotations.\n                // we pad with nulls.\n                while (parameters.length <= index) {\n                    parameters.push(null);\n                }\n                (parameters[index] = parameters[index] || []).push(annotationInstance);\n                return cls;\n            }\n        }\n        if (parentClass) {\n            ParamDecoratorFactory.prototype = Object.create(parentClass.prototype);\n        }\n        ParamDecoratorFactory.prototype.ngMetadataName = name;\n        ParamDecoratorFactory.annotationCls = ParamDecoratorFactory;\n        return ParamDecoratorFactory;\n    });\n}\nfunction makePropDecorator(name, props, parentClass, additionalProcessing) {\n    return noSideEffects(() => {\n        const metaCtor = makeMetadataCtor(props);\n        function PropDecoratorFactory(...args) {\n            if (this instanceof PropDecoratorFactory) {\n                metaCtor.apply(this, args);\n                return this;\n            }\n            const decoratorInstance = new PropDecoratorFactory(...args);\n            function PropDecorator(target, name) {\n                const constructor = target.constructor;\n                // Use of Object.defineProperty is important because it creates a non-enumerable property\n                // which prevents the property from being copied during subclassing.\n                const meta = constructor.hasOwnProperty(PROP_METADATA) ?\n                    constructor[PROP_METADATA] :\n                    Object.defineProperty(constructor, PROP_METADATA, { value: {} })[PROP_METADATA];\n                meta[name] = meta.hasOwnProperty(name) && meta[name] || [];\n                meta[name].unshift(decoratorInstance);\n                if (additionalProcessing)\n                    additionalProcessing(target, name, ...args);\n            }\n            return PropDecorator;\n        }\n        if (parentClass) {\n            PropDecoratorFactory.prototype = Object.create(parentClass.prototype);\n        }\n        PropDecoratorFactory.prototype.ngMetadataName = name;\n        PropDecoratorFactory.annotationCls = PropDecoratorFactory;\n        return PropDecoratorFactory;\n    });\n}\n\n/**\n * Attribute decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nconst Attribute = makeParamDecorator('Attribute', (attributeName) => ({ attributeName, __NG_ELEMENT_ID__: () => ɵɵinjectAttribute(attributeName) }));\n\n/**\n * Creates a token that can be used in a DI Provider.\n *\n * Use an `InjectionToken` whenever the type you are injecting is not reified (does not have a\n * runtime representation) such as when injecting an interface, callable type, array or\n * parameterized type.\n *\n * `InjectionToken` is parameterized on `T` which is the type of object which will be returned by\n * the `Injector`. This provides an additional level of type safety.\n *\n * ```\n * interface MyInterface {...}\n * const myInterface = injector.get(new InjectionToken<MyInterface>('SomeToken'));\n * // myInterface is inferred to be MyInterface.\n * ```\n *\n * When creating an `InjectionToken`, you can optionally specify a factory function which returns\n * (possibly by creating) a default value of the parameterized type `T`. This sets up the\n * `InjectionToken` using this factory as a provider as if it was defined explicitly in the\n * application's root injector. If the factory function, which takes zero arguments, needs to inject\n * dependencies, it can do so using the `inject` function.\n * As you can see in the Tree-shakable InjectionToken example below.\n *\n * Additionally, if a `factory` is specified you can also specify the `providedIn` option, which\n * overrides the above behavior and marks the token as belonging to a particular `@NgModule` (note:\n * this option is now deprecated). As mentioned above, `'root'` is the default value for\n * `providedIn`.\n *\n * The `providedIn: NgModule` and `providedIn: 'any'` options are deprecated.\n *\n * @usageNotes\n * ### Basic Examples\n *\n * ### Plain InjectionToken\n *\n * {@example core/di/ts/injector_spec.ts region='InjectionToken'}\n *\n * ### Tree-shakable InjectionToken\n *\n * {@example core/di/ts/injector_spec.ts region='ShakableInjectionToken'}\n *\n *\n * @publicApi\n */\nclass InjectionToken {\n    /**\n     * @param _desc   Description for the token,\n     *                used only for debugging purposes,\n     *                it should but does not need to be unique\n     * @param options Options for the token's usage, as described above\n     */\n    constructor(_desc, options) {\n        this._desc = _desc;\n        /** @internal */\n        this.ngMetadataName = 'InjectionToken';\n        this.ɵprov = undefined;\n        if (typeof options == 'number') {\n            (typeof ngDevMode === 'undefined' || ngDevMode) &&\n                assertLessThan(options, 0, 'Only negative numbers are supported here');\n            // This is a special hack to assign __NG_ELEMENT_ID__ to this instance.\n            // See `InjectorMarkers`\n            this.__NG_ELEMENT_ID__ = options;\n        }\n        else if (options !== undefined) {\n            this.ɵprov = ɵɵdefineInjectable({\n                token: this,\n                providedIn: options.providedIn || 'root',\n                factory: options.factory,\n            });\n        }\n    }\n    /**\n     * @internal\n     */\n    get multi() {\n        return this;\n    }\n    toString() {\n        return `InjectionToken ${this._desc}`;\n    }\n}\n\n/**\n * A DI token that you can use to create a virtual [provider](guide/glossary#provider)\n * that will populate the `entryComponents` field of components and NgModules\n * based on its `useValue` property value.\n * All components that are referenced in the `useValue` value (either directly\n * or in a nested array or map) are added to the `entryComponents` property.\n *\n * @usageNotes\n *\n * The following example shows how the router can populate the `entryComponents`\n * field of an NgModule based on a router configuration that refers\n * to components.\n *\n * ```typescript\n * // helper function inside the router\n * function provideRoutes(routes) {\n *   return [\n *     {provide: ROUTES, useValue: routes},\n *     {provide: ANALYZE_FOR_ENTRY_COMPONENTS, useValue: routes, multi: true}\n *   ];\n * }\n *\n * // user code\n * let routes = [\n *   {path: '/root', component: RootComp},\n *   {path: '/teams', component: TeamsComp}\n * ];\n *\n * @NgModule({\n *   providers: [provideRoutes(routes)]\n * })\n * class ModuleWithRoutes {}\n * ```\n *\n * @publicApi\n * @deprecated Since 9.0.0. With Ivy, this property is no longer necessary.\n */\nconst ANALYZE_FOR_ENTRY_COMPONENTS = new InjectionToken('AnalyzeForEntryComponents');\n// Stores the default value of `emitDistinctChangesOnly` when the `emitDistinctChangesOnly` is not\n// explicitly set.\nconst emitDistinctChangesOnlyDefaultValue = true;\n/**\n * Base class for query metadata.\n *\n * @see `ContentChildren`.\n * @see `ContentChild`.\n * @see `ViewChildren`.\n * @see `ViewChild`.\n *\n * @publicApi\n */\nclass Query {\n}\n/**\n * ContentChildren decorator and metadata.\n *\n *\n * @Annotation\n * @publicApi\n */\nconst ContentChildren = makePropDecorator('ContentChildren', (selector, data = {}) => ({\n    selector,\n    first: false,\n    isViewQuery: false,\n    descendants: false,\n    emitDistinctChangesOnly: emitDistinctChangesOnlyDefaultValue,\n    ...data\n}), Query);\n/**\n * ContentChild decorator and metadata.\n *\n *\n * @Annotation\n *\n * @publicApi\n */\nconst ContentChild = makePropDecorator('ContentChild', (selector, data = {}) => ({ selector, first: true, isViewQuery: false, descendants: true, ...data }), Query);\n/**\n * ViewChildren decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nconst ViewChildren = makePropDecorator('ViewChildren', (selector, data = {}) => ({\n    selector,\n    first: false,\n    isViewQuery: true,\n    descendants: true,\n    emitDistinctChangesOnly: emitDistinctChangesOnlyDefaultValue,\n    ...data\n}), Query);\n/**\n * ViewChild decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nconst ViewChild = makePropDecorator('ViewChild', (selector, data) => ({ selector, first: true, isViewQuery: true, descendants: true, ...data }), Query);\n\nvar FactoryTarget;\n(function (FactoryTarget) {\n    FactoryTarget[FactoryTarget[\"Directive\"] = 0] = \"Directive\";\n    FactoryTarget[FactoryTarget[\"Component\"] = 1] = \"Component\";\n    FactoryTarget[FactoryTarget[\"Injectable\"] = 2] = \"Injectable\";\n    FactoryTarget[FactoryTarget[\"Pipe\"] = 3] = \"Pipe\";\n    FactoryTarget[FactoryTarget[\"NgModule\"] = 4] = \"NgModule\";\n})(FactoryTarget || (FactoryTarget = {}));\nvar R3TemplateDependencyKind;\n(function (R3TemplateDependencyKind) {\n    R3TemplateDependencyKind[R3TemplateDependencyKind[\"Directive\"] = 0] = \"Directive\";\n    R3TemplateDependencyKind[R3TemplateDependencyKind[\"Pipe\"] = 1] = \"Pipe\";\n    R3TemplateDependencyKind[R3TemplateDependencyKind[\"NgModule\"] = 2] = \"NgModule\";\n})(R3TemplateDependencyKind || (R3TemplateDependencyKind = {}));\nvar ViewEncapsulation;\n(function (ViewEncapsulation) {\n    ViewEncapsulation[ViewEncapsulation[\"Emulated\"] = 0] = \"Emulated\";\n    // Historically the 1 value was for `Native` encapsulation which has been removed as of v11.\n    ViewEncapsulation[ViewEncapsulation[\"None\"] = 2] = \"None\";\n    ViewEncapsulation[ViewEncapsulation[\"ShadowDom\"] = 3] = \"ShadowDom\";\n})(ViewEncapsulation || (ViewEncapsulation = {}));\n\nfunction getCompilerFacade(request) {\n    const globalNg = _global['ng'];\n    if (globalNg && globalNg.ɵcompilerFacade) {\n        return globalNg.ɵcompilerFacade;\n    }\n    if (typeof ngDevMode === 'undefined' || ngDevMode) {\n        // Log the type as an error so that a developer can easily navigate to the type from the\n        // console.\n        console.error(`JIT compilation failed for ${request.kind}`, request.type);\n        let message = `The ${request.kind} '${request\n            .type.name}' needs to be compiled using the JIT compiler, but '@angular/compiler' is not available.\\n\\n`;\n        if (request.usage === 1 /* JitCompilerUsage.PartialDeclaration */) {\n            message += `The ${request.kind} is part of a library that has been partially compiled.\\n`;\n            message +=\n                `However, the Angular Linker has not processed the library such that JIT compilation is used as fallback.\\n`;\n            message += '\\n';\n            message +=\n                `Ideally, the library is processed using the Angular Linker to become fully AOT compiled.\\n`;\n        }\n        else {\n            message +=\n                `JIT compilation is discouraged for production use-cases! Consider using AOT mode instead.\\n`;\n        }\n        message +=\n            `Alternatively, the JIT compiler should be loaded by bootstrapping using '@angular/platform-browser-dynamic' or '@angular/platform-server',\\n`;\n        message +=\n            `or manually provide the compiler with 'import \"@angular/compiler\";' before bootstrapping.`;\n        throw new Error(message);\n    }\n    else {\n        throw new Error('JIT compiler unavailable');\n    }\n}\n\n/**\n * @description\n *\n * Represents a type that a Component or other object is instances of.\n *\n * An example of a `Type` is `MyCustomComponent` class, which in JavaScript is represented by\n * the `MyCustomComponent` constructor function.\n *\n * @publicApi\n */\nconst Type = Function;\nfunction isType(v) {\n    return typeof v === 'function';\n}\n\n/**\n * Determines if the contents of two arrays is identical\n *\n * @param a first array\n * @param b second array\n * @param identityAccessor Optional function for extracting stable object identity from a value in\n *     the array.\n */\nfunction arrayEquals(a, b, identityAccessor) {\n    if (a.length !== b.length)\n        return false;\n    for (let i = 0; i < a.length; i++) {\n        let valueA = a[i];\n        let valueB = b[i];\n        if (identityAccessor) {\n            valueA = identityAccessor(valueA);\n            valueB = identityAccessor(valueB);\n        }\n        if (valueB !== valueA) {\n            return false;\n        }\n    }\n    return true;\n}\n/**\n * Flattens an array.\n */\nfunction flatten(list) {\n    return list.flat(Number.POSITIVE_INFINITY);\n}\nfunction deepForEach(input, fn) {\n    input.forEach(value => Array.isArray(value) ? deepForEach(value, fn) : fn(value));\n}\nfunction addToArray(arr, index, value) {\n    // perf: array.push is faster than array.splice!\n    if (index >= arr.length) {\n        arr.push(value);\n    }\n    else {\n        arr.splice(index, 0, value);\n    }\n}\nfunction removeFromArray(arr, index) {\n    // perf: array.pop is faster than array.splice!\n    if (index >= arr.length - 1) {\n        return arr.pop();\n    }\n    else {\n        return arr.splice(index, 1)[0];\n    }\n}\nfunction newArray(size, value) {\n    const list = [];\n    for (let i = 0; i < size; i++) {\n        list.push(value);\n    }\n    return list;\n}\n/**\n * Remove item from array (Same as `Array.splice()` but faster.)\n *\n * `Array.splice()` is not as fast because it has to allocate an array for the elements which were\n * removed. This causes memory pressure and slows down code when most of the time we don't\n * care about the deleted items array.\n *\n * https://jsperf.com/fast-array-splice (About 20x faster)\n *\n * @param array Array to splice\n * @param index Index of element in array to remove.\n * @param count Number of items to remove.\n */\nfunction arraySplice(array, index, count) {\n    const length = array.length - count;\n    while (index < length) {\n        array[index] = array[index + count];\n        index++;\n    }\n    while (count--) {\n        array.pop(); // shrink the array\n    }\n}\n/**\n * Same as `Array.splice(index, 0, value)` but faster.\n *\n * `Array.splice()` is not fast because it has to allocate an array for the elements which were\n * removed. This causes memory pressure and slows down code when most of the time we don't\n * care about the deleted items array.\n *\n * @param array Array to splice.\n * @param index Index in array where the `value` should be added.\n * @param value Value to add to array.\n */\nfunction arrayInsert(array, index, value) {\n    ngDevMode && assertLessThanOrEqual(index, array.length, 'Can\\'t insert past array end.');\n    let end = array.length;\n    while (end > index) {\n        const previousEnd = end - 1;\n        array[end] = array[previousEnd];\n        end = previousEnd;\n    }\n    array[index] = value;\n}\n/**\n * Same as `Array.splice2(index, 0, value1, value2)` but faster.\n *\n * `Array.splice()` is not fast because it has to allocate an array for the elements which were\n * removed. This causes memory pressure and slows down code when most of the time we don't\n * care about the deleted items array.\n *\n * @param array Array to splice.\n * @param index Index in array where the `value` should be added.\n * @param value1 Value to add to array.\n * @param value2 Value to add to array.\n */\nfunction arrayInsert2(array, index, value1, value2) {\n    ngDevMode && assertLessThanOrEqual(index, array.length, 'Can\\'t insert past array end.');\n    let end = array.length;\n    if (end == index) {\n        // inserting at the end.\n        array.push(value1, value2);\n    }\n    else if (end === 1) {\n        // corner case when we have less items in array than we have items to insert.\n        array.push(value2, array[0]);\n        array[0] = value1;\n    }\n    else {\n        end--;\n        array.push(array[end - 1], array[end]);\n        while (end > index) {\n            const previousEnd = end - 2;\n            array[end] = array[previousEnd];\n            end--;\n        }\n        array[index] = value1;\n        array[index + 1] = value2;\n    }\n}\n/**\n * Get an index of an `value` in a sorted `array`.\n *\n * NOTE:\n * - This uses binary search algorithm for fast removals.\n *\n * @param array A sorted array to binary search.\n * @param value The value to look for.\n * @returns index of the value.\n *   - positive index if value found.\n *   - negative index if value not found. (`~index` to get the value where it should have been\n *     located)\n */\nfunction arrayIndexOfSorted(array, value) {\n    return _arrayIndexOfSorted(array, value, 0);\n}\n/**\n * Set a `value` for a `key`.\n *\n * @param keyValueArray to modify.\n * @param key The key to locate or create.\n * @param value The value to set for a `key`.\n * @returns index (always even) of where the value vas set.\n */\nfunction keyValueArraySet(keyValueArray, key, value) {\n    let index = keyValueArrayIndexOf(keyValueArray, key);\n    if (index >= 0) {\n        // if we found it set it.\n        keyValueArray[index | 1] = value;\n    }\n    else {\n        index = ~index;\n        arrayInsert2(keyValueArray, index, key, value);\n    }\n    return index;\n}\n/**\n * Retrieve a `value` for a `key` (on `undefined` if not found.)\n *\n * @param keyValueArray to search.\n * @param key The key to locate.\n * @return The `value` stored at the `key` location or `undefined if not found.\n */\nfunction keyValueArrayGet(keyValueArray, key) {\n    const index = keyValueArrayIndexOf(keyValueArray, key);\n    if (index >= 0) {\n        // if we found it retrieve it.\n        return keyValueArray[index | 1];\n    }\n    return undefined;\n}\n/**\n * Retrieve a `key` index value in the array or `-1` if not found.\n *\n * @param keyValueArray to search.\n * @param key The key to locate.\n * @returns index of where the key is (or should have been.)\n *   - positive (even) index if key found.\n *   - negative index if key not found. (`~index` (even) to get the index where it should have\n *     been inserted.)\n */\nfunction keyValueArrayIndexOf(keyValueArray, key) {\n    return _arrayIndexOfSorted(keyValueArray, key, 1);\n}\n/**\n * Delete a `key` (and `value`) from the `KeyValueArray`.\n *\n * @param keyValueArray to modify.\n * @param key The key to locate or delete (if exist).\n * @returns index of where the key was (or should have been.)\n *   - positive (even) index if key found and deleted.\n *   - negative index if key not found. (`~index` (even) to get the index where it should have\n *     been.)\n */\nfunction keyValueArrayDelete(keyValueArray, key) {\n    const index = keyValueArrayIndexOf(keyValueArray, key);\n    if (index >= 0) {\n        // if we found it remove it.\n        arraySplice(keyValueArray, index, 2);\n    }\n    return index;\n}\n/**\n * INTERNAL: Get an index of an `value` in a sorted `array` by grouping search by `shift`.\n *\n * NOTE:\n * - This uses binary search algorithm for fast removals.\n *\n * @param array A sorted array to binary search.\n * @param value The value to look for.\n * @param shift grouping shift.\n *   - `0` means look at every location\n *   - `1` means only look at every other (even) location (the odd locations are to be ignored as\n *         they are values.)\n * @returns index of the value.\n *   - positive index if value found.\n *   - negative index if value not found. (`~index` to get the value where it should have been\n * inserted)\n */\nfunction _arrayIndexOfSorted(array, value, shift) {\n    ngDevMode && assertEqual(Array.isArray(array), true, 'Expecting an array');\n    let start = 0;\n    let end = array.length >> shift;\n    while (end !== start) {\n        const middle = start + ((end - start) >> 1); // find the middle.\n        const current = array[middle << shift];\n        if (value === current) {\n            return (middle << shift);\n        }\n        else if (current > value) {\n            end = middle;\n        }\n        else {\n            start = middle + 1; // We already searched middle so make it non-inclusive by adding 1\n        }\n    }\n    return ~(end << shift);\n}\n\n/*\n * #########################\n * Attention: These Regular expressions have to hold even if the code is minified!\n * ##########################\n */\n/**\n * Regular expression that detects pass-through constructors for ES5 output. This Regex\n * intends to capture the common delegation pattern emitted by TypeScript and Babel. Also\n * it intends to capture the pattern where existing constructors have been downleveled from\n * ES2015 to ES5 using TypeScript w/ downlevel iteration. e.g.\n *\n * ```\n *   function MyClass() {\n *     var _this = _super.apply(this, arguments) || this;\n * ```\n *\n * downleveled to ES5 with `downlevelIteration` for TypeScript < 4.2:\n * ```\n *   function MyClass() {\n *     var _this = _super.apply(this, __spread(arguments)) || this;\n * ```\n *\n * or downleveled to ES5 with `downlevelIteration` for TypeScript >= 4.2:\n * ```\n *   function MyClass() {\n *     var _this = _super.apply(this, __spreadArray([], __read(arguments), false)) || this;\n * ```\n *\n * More details can be found in: https://github.com/angular/angular/issues/38453.\n */\nconst ES5_DELEGATE_CTOR = /^function\\s+\\S+\\(\\)\\s*{[\\s\\S]+\\.apply\\(this,\\s*(arguments|(?:[^()]+\\(\\[\\],)?[^()]+\\(arguments\\).*)\\)/;\n/** Regular expression that detects ES2015 classes which extend from other classes. */\nconst ES2015_INHERITED_CLASS = /^class\\s+[A-Za-z\\d$_]*\\s*extends\\s+[^{]+{/;\n/**\n * Regular expression that detects ES2015 classes which extend from other classes and\n * have an explicit constructor defined.\n */\nconst ES2015_INHERITED_CLASS_WITH_CTOR = /^class\\s+[A-Za-z\\d$_]*\\s*extends\\s+[^{]+{[\\s\\S]*constructor\\s*\\(/;\n/**\n * Regular expression that detects ES2015 classes which extend from other classes\n * and inherit a constructor.\n */\nconst ES2015_INHERITED_CLASS_WITH_DELEGATE_CTOR = /^class\\s+[A-Za-z\\d$_]*\\s*extends\\s+[^{]+{[\\s\\S]*constructor\\s*\\(\\)\\s*{[^}]*super\\(\\.\\.\\.arguments\\)/;\n/**\n * Determine whether a stringified type is a class which delegates its constructor\n * to its parent.\n *\n * This is not trivial since compiled code can actually contain a constructor function\n * even if the original source code did not. For instance, when the child class contains\n * an initialized instance property.\n */\nfunction isDelegateCtor(typeStr) {\n    return ES5_DELEGATE_CTOR.test(typeStr) ||\n        ES2015_INHERITED_CLASS_WITH_DELEGATE_CTOR.test(typeStr) ||\n        (ES2015_INHERITED_CLASS.test(typeStr) && !ES2015_INHERITED_CLASS_WITH_CTOR.test(typeStr));\n}\nclass ReflectionCapabilities {\n    constructor(reflect) {\n        this._reflect = reflect || _global['Reflect'];\n    }\n    factory(t) {\n        return (...args) => new t(...args);\n    }\n    /** @internal */\n    _zipTypesAndAnnotations(paramTypes, paramAnnotations) {\n        let result;\n        if (typeof paramTypes === 'undefined') {\n            result = newArray(paramAnnotations.length);\n        }\n        else {\n            result = newArray(paramTypes.length);\n        }\n        for (let i = 0; i < result.length; i++) {\n            // TS outputs Object for parameters without types, while Traceur omits\n            // the annotations. For now we preserve the Traceur behavior to aid\n            // migration, but this can be revisited.\n            if (typeof paramTypes === 'undefined') {\n                result[i] = [];\n            }\n            else if (paramTypes[i] && paramTypes[i] != Object) {\n                result[i] = [paramTypes[i]];\n            }\n            else {\n                result[i] = [];\n            }\n            if (paramAnnotations && paramAnnotations[i] != null) {\n                result[i] = result[i].concat(paramAnnotations[i]);\n            }\n        }\n        return result;\n    }\n    _ownParameters(type, parentCtor) {\n        const typeStr = type.toString();\n        // If we have no decorators, we only have function.length as metadata.\n        // In that case, to detect whether a child class declared an own constructor or not,\n        // we need to look inside of that constructor to check whether it is\n        // just calling the parent.\n        // This also helps to work around for https://github.com/Microsoft/TypeScript/issues/12439\n        // that sets 'design:paramtypes' to []\n        // if a class inherits from another class but has no ctor declared itself.\n        if (isDelegateCtor(typeStr)) {\n            return null;\n        }\n        // Prefer the direct API.\n        if (type.parameters && type.parameters !== parentCtor.parameters) {\n            return type.parameters;\n        }\n        // API of tsickle for lowering decorators to properties on the class.\n        const tsickleCtorParams = type.ctorParameters;\n        if (tsickleCtorParams && tsickleCtorParams !== parentCtor.ctorParameters) {\n            // Newer tsickle uses a function closure\n            // Retain the non-function case for compatibility with older tsickle\n            const ctorParameters = typeof tsickleCtorParams === 'function' ? tsickleCtorParams() : tsickleCtorParams;\n            const paramTypes = ctorParameters.map((ctorParam) => ctorParam && ctorParam.type);\n            const paramAnnotations = ctorParameters.map((ctorParam) => ctorParam && convertTsickleDecoratorIntoMetadata(ctorParam.decorators));\n            return this._zipTypesAndAnnotations(paramTypes, paramAnnotations);\n        }\n        // API for metadata created by invoking the decorators.\n        const paramAnnotations = type.hasOwnProperty(PARAMETERS) && type[PARAMETERS];\n        const paramTypes = this._reflect && this._reflect.getOwnMetadata &&\n            this._reflect.getOwnMetadata('design:paramtypes', type);\n        if (paramTypes || paramAnnotations) {\n            return this._zipTypesAndAnnotations(paramTypes, paramAnnotations);\n        }\n        // If a class has no decorators, at least create metadata\n        // based on function.length.\n        // Note: We know that this is a real constructor as we checked\n        // the content of the constructor above.\n        return newArray(type.length);\n    }\n    parameters(type) {\n        // Note: only report metadata if we have at least one class decorator\n        // to stay in sync with the static reflector.\n        if (!isType(type)) {\n            return [];\n        }\n        const parentCtor = getParentCtor(type);\n        let parameters = this._ownParameters(type, parentCtor);\n        if (!parameters && parentCtor !== Object) {\n            parameters = this.parameters(parentCtor);\n        }\n        return parameters || [];\n    }\n    _ownAnnotations(typeOrFunc, parentCtor) {\n        // Prefer the direct API.\n        if (typeOrFunc.annotations && typeOrFunc.annotations !== parentCtor.annotations) {\n            let annotations = typeOrFunc.annotations;\n            if (typeof annotations === 'function' && annotations.annotations) {\n                annotations = annotations.annotations;\n            }\n            return annotations;\n        }\n        // API of tsickle for lowering decorators to properties on the class.\n        if (typeOrFunc.decorators && typeOrFunc.decorators !== parentCtor.decorators) {\n            return convertTsickleDecoratorIntoMetadata(typeOrFunc.decorators);\n        }\n        // API for metadata created by invoking the decorators.\n        if (typeOrFunc.hasOwnProperty(ANNOTATIONS)) {\n            return typeOrFunc[ANNOTATIONS];\n        }\n        return null;\n    }\n    annotations(typeOrFunc) {\n        if (!isType(typeOrFunc)) {\n            return [];\n        }\n        const parentCtor = getParentCtor(typeOrFunc);\n        const ownAnnotations = this._ownAnnotations(typeOrFunc, parentCtor) || [];\n        const parentAnnotations = parentCtor !== Object ? this.annotations(parentCtor) : [];\n        return parentAnnotations.concat(ownAnnotations);\n    }\n    _ownPropMetadata(typeOrFunc, parentCtor) {\n        // Prefer the direct API.\n        if (typeOrFunc.propMetadata &&\n            typeOrFunc.propMetadata !== parentCtor.propMetadata) {\n            let propMetadata = typeOrFunc.propMetadata;\n            if (typeof propMetadata === 'function' && propMetadata.propMetadata) {\n                propMetadata = propMetadata.propMetadata;\n            }\n            return propMetadata;\n        }\n        // API of tsickle for lowering decorators to properties on the class.\n        if (typeOrFunc.propDecorators &&\n            typeOrFunc.propDecorators !== parentCtor.propDecorators) {\n            const propDecorators = typeOrFunc.propDecorators;\n            const propMetadata = {};\n            Object.keys(propDecorators).forEach(prop => {\n                propMetadata[prop] = convertTsickleDecoratorIntoMetadata(propDecorators[prop]);\n            });\n            return propMetadata;\n        }\n        // API for metadata created by invoking the decorators.\n        if (typeOrFunc.hasOwnProperty(PROP_METADATA)) {\n            return typeOrFunc[PROP_METADATA];\n        }\n        return null;\n    }\n    propMetadata(typeOrFunc) {\n        if (!isType(typeOrFunc)) {\n            return {};\n        }\n        const parentCtor = getParentCtor(typeOrFunc);\n        const propMetadata = {};\n        if (parentCtor !== Object) {\n            const parentPropMetadata = this.propMetadata(parentCtor);\n            Object.keys(parentPropMetadata).forEach((propName) => {\n                propMetadata[propName] = parentPropMetadata[propName];\n            });\n        }\n        const ownPropMetadata = this._ownPropMetadata(typeOrFunc, parentCtor);\n        if (ownPropMetadata) {\n            Object.keys(ownPropMetadata).forEach((propName) => {\n                const decorators = [];\n                if (propMetadata.hasOwnProperty(propName)) {\n                    decorators.push(...propMetadata[propName]);\n                }\n                decorators.push(...ownPropMetadata[propName]);\n                propMetadata[propName] = decorators;\n            });\n        }\n        return propMetadata;\n    }\n    ownPropMetadata(typeOrFunc) {\n        if (!isType(typeOrFunc)) {\n            return {};\n        }\n        return this._ownPropMetadata(typeOrFunc, getParentCtor(typeOrFunc)) || {};\n    }\n    hasLifecycleHook(type, lcProperty) {\n        return type instanceof Type && lcProperty in type.prototype;\n    }\n}\nfunction convertTsickleDecoratorIntoMetadata(decoratorInvocations) {\n    if (!decoratorInvocations) {\n        return [];\n    }\n    return decoratorInvocations.map(decoratorInvocation => {\n        const decoratorType = decoratorInvocation.type;\n        const annotationCls = decoratorType.annotationCls;\n        const annotationArgs = decoratorInvocation.args ? decoratorInvocation.args : [];\n        return new annotationCls(...annotationArgs);\n    });\n}\nfunction getParentCtor(ctor) {\n    const parentProto = ctor.prototype ? Object.getPrototypeOf(ctor.prototype) : null;\n    const parentCtor = parentProto ? parentProto.constructor : null;\n    // Note: We always use `Object` as the null value\n    // to simplify checking later on.\n    return parentCtor || Object;\n}\n\n/**\n * Inject decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nconst Inject = attachInjectFlag(\n// Disable tslint because `DecoratorFlags` is a const enum which gets inlined.\n// tslint:disable-next-line: no-toplevel-property-access\nmakeParamDecorator('Inject', (token) => ({ token })), -1 /* DecoratorFlags.Inject */);\n/**\n * Optional decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nconst Optional = \n// Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n// tslint:disable-next-line: no-toplevel-property-access\nattachInjectFlag(makeParamDecorator('Optional'), 8 /* InternalInjectFlags.Optional */);\n/**\n * Self decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nconst Self = \n// Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n// tslint:disable-next-line: no-toplevel-property-access\nattachInjectFlag(makeParamDecorator('Self'), 2 /* InternalInjectFlags.Self */);\n/**\n * `SkipSelf` decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nconst SkipSelf = \n// Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n// tslint:disable-next-line: no-toplevel-property-access\nattachInjectFlag(makeParamDecorator('SkipSelf'), 4 /* InternalInjectFlags.SkipSelf */);\n/**\n * Host decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nconst Host = \n// Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n// tslint:disable-next-line: no-toplevel-property-access\nattachInjectFlag(makeParamDecorator('Host'), 1 /* InternalInjectFlags.Host */);\n\nlet _reflect = null;\nfunction getReflect() {\n    return (_reflect = _reflect || new ReflectionCapabilities());\n}\nfunction reflectDependencies(type) {\n    return convertDependencies(getReflect().parameters(type));\n}\nfunction convertDependencies(deps) {\n    return deps.map(dep => reflectDependency(dep));\n}\nfunction reflectDependency(dep) {\n    const meta = {\n        token: null,\n        attribute: null,\n        host: false,\n        optional: false,\n        self: false,\n        skipSelf: false,\n    };\n    if (Array.isArray(dep) && dep.length > 0) {\n        for (let j = 0; j < dep.length; j++) {\n            const param = dep[j];\n            if (param === undefined) {\n                // param may be undefined if type of dep is not set by ngtsc\n                continue;\n            }\n            const proto = Object.getPrototypeOf(param);\n            if (param instanceof Optional || proto.ngMetadataName === 'Optional') {\n                meta.optional = true;\n            }\n            else if (param instanceof SkipSelf || proto.ngMetadataName === 'SkipSelf') {\n                meta.skipSelf = true;\n            }\n            else if (param instanceof Self || proto.ngMetadataName === 'Self') {\n                meta.self = true;\n            }\n            else if (param instanceof Host || proto.ngMetadataName === 'Host') {\n                meta.host = true;\n            }\n            else if (param instanceof Inject) {\n                meta.token = param.token;\n            }\n            else if (param instanceof Attribute) {\n                if (param.attributeName === undefined) {\n                    throw new RuntimeError(204 /* RuntimeErrorCode.INVALID_INJECTION_TOKEN */, ngDevMode && `Attribute name must be defined.`);\n                }\n                meta.attribute = param.attributeName;\n            }\n            else {\n                meta.token = param;\n            }\n        }\n    }\n    else if (dep === undefined || (Array.isArray(dep) && dep.length === 0)) {\n        meta.token = null;\n    }\n    else {\n        meta.token = dep;\n    }\n    return meta;\n}\n\n/**\n * Used to resolve resource URLs on `@Component` when used with JIT compilation.\n *\n * Example:\n * ```\n * @Component({\n *   selector: 'my-comp',\n *   templateUrl: 'my-comp.html', // This requires asynchronous resolution\n * })\n * class MyComponent{\n * }\n *\n * // Calling `renderComponent` will fail because `renderComponent` is a synchronous process\n * // and `MyComponent`'s `@Component.templateUrl` needs to be resolved asynchronously.\n *\n * // Calling `resolveComponentResources()` will resolve `@Component.templateUrl` into\n * // `@Component.template`, which allows `renderComponent` to proceed in a synchronous manner.\n *\n * // Use browser's `fetch()` function as the default resource resolution strategy.\n * resolveComponentResources(fetch).then(() => {\n *   // After resolution all URLs have been converted into `template` strings.\n *   renderComponent(MyComponent);\n * });\n *\n * ```\n *\n * NOTE: In AOT the resolution happens during compilation, and so there should be no need\n * to call this method outside JIT mode.\n *\n * @param resourceResolver a function which is responsible for returning a `Promise` to the\n * contents of the resolved URL. Browser's `fetch()` method is a good default implementation.\n */\nfunction resolveComponentResources(resourceResolver) {\n    // Store all promises which are fetching the resources.\n    const componentResolved = [];\n    // Cache so that we don't fetch the same resource more than once.\n    const urlMap = new Map();\n    function cachedResourceResolve(url) {\n        let promise = urlMap.get(url);\n        if (!promise) {\n            const resp = resourceResolver(url);\n            urlMap.set(url, promise = resp.then(unwrapResponse));\n        }\n        return promise;\n    }\n    componentResourceResolutionQueue.forEach((component, type) => {\n        const promises = [];\n        if (component.templateUrl) {\n            promises.push(cachedResourceResolve(component.templateUrl).then((template) => {\n                component.template = template;\n            }));\n        }\n        const styleUrls = component.styleUrls;\n        const styles = component.styles || (component.styles = []);\n        const styleOffset = component.styles.length;\n        styleUrls && styleUrls.forEach((styleUrl, index) => {\n            styles.push(''); // pre-allocate array.\n            promises.push(cachedResourceResolve(styleUrl).then((style) => {\n                styles[styleOffset + index] = style;\n                styleUrls.splice(styleUrls.indexOf(styleUrl), 1);\n                if (styleUrls.length == 0) {\n                    component.styleUrls = undefined;\n                }\n            }));\n        });\n        const fullyResolved = Promise.all(promises).then(() => componentDefResolved(type));\n        componentResolved.push(fullyResolved);\n    });\n    clearResolutionOfComponentResourcesQueue();\n    return Promise.all(componentResolved).then(() => undefined);\n}\nlet componentResourceResolutionQueue = new Map();\n// Track when existing ɵcmp for a Type is waiting on resources.\nconst componentDefPendingResolution = new Set();\nfunction maybeQueueResolutionOfComponentResources(type, metadata) {\n    if (componentNeedsResolution(metadata)) {\n        componentResourceResolutionQueue.set(type, metadata);\n        componentDefPendingResolution.add(type);\n    }\n}\nfunction isComponentDefPendingResolution(type) {\n    return componentDefPendingResolution.has(type);\n}\nfunction componentNeedsResolution(component) {\n    return !!((component.templateUrl && !component.hasOwnProperty('template')) ||\n        component.styleUrls && component.styleUrls.length);\n}\nfunction clearResolutionOfComponentResourcesQueue() {\n    const old = componentResourceResolutionQueue;\n    componentResourceResolutionQueue = new Map();\n    return old;\n}\nfunction restoreComponentResolutionQueue(queue) {\n    componentDefPendingResolution.clear();\n    queue.forEach((_, type) => componentDefPendingResolution.add(type));\n    componentResourceResolutionQueue = queue;\n}\nfunction isComponentResourceResolutionQueueEmpty() {\n    return componentResourceResolutionQueue.size === 0;\n}\nfunction unwrapResponse(response) {\n    return typeof response == 'string' ? response : response.text();\n}\nfunction componentDefResolved(type) {\n    componentDefPendingResolution.delete(type);\n}\n\n/**\n * Map of module-id to the corresponding NgModule.\n */\nconst modules = new Map();\n/**\n * Whether to check for duplicate NgModule registrations.\n *\n * This can be disabled for testing.\n */\nlet checkForDuplicateNgModules = true;\nfunction assertSameOrNotExisting(id, type, incoming) {\n    if (type && type !== incoming && checkForDuplicateNgModules) {\n        throw new Error(`Duplicate module registered for ${id} - ${stringify(type)} vs ${stringify(type.name)}`);\n    }\n}\n/**\n * Adds the given NgModule type to Angular's NgModule registry.\n *\n * This is generated as a side-effect of NgModule compilation. Note that the `id` is passed in\n * explicitly and not read from the NgModule definition. This is for two reasons: it avoids a\n * megamorphic read, and in JIT there's a chicken-and-egg problem where the NgModule may not be\n * fully resolved when it's registered.\n *\n * @codeGenApi\n */\nfunction registerNgModuleType(ngModuleType, id) {\n    const existing = modules.get(id) || null;\n    assertSameOrNotExisting(id, existing, ngModuleType);\n    modules.set(id, ngModuleType);\n}\nfunction clearModulesForTest() {\n    modules.clear();\n}\nfunction getRegisteredNgModuleType(id) {\n    return modules.get(id);\n}\n/**\n * Control whether the NgModule registration system enforces that each NgModule type registered has\n * a unique id.\n *\n * This is useful for testing as the NgModule registry cannot be properly reset between tests with\n * Angular's current API.\n */\nfunction setAllowDuplicateNgModuleIdsForTest(allowDuplicates) {\n    checkForDuplicateNgModules = !allowDuplicates;\n}\n\n/**\n * Defines a schema that allows an NgModule to contain the following:\n * - Non-Angular elements named with dash case (`-`).\n * - Element properties named with dash case (`-`).\n * Dash case is the naming convention for custom elements.\n *\n * @publicApi\n */\nconst CUSTOM_ELEMENTS_SCHEMA = {\n    name: 'custom-elements'\n};\n/**\n * Defines a schema that allows any property on any element.\n *\n * This schema allows you to ignore the errors related to any unknown elements or properties in a\n * template. The usage of this schema is generally discouraged because it prevents useful validation\n * and may hide real errors in your template. Consider using the `CUSTOM_ELEMENTS_SCHEMA` instead.\n *\n * @publicApi\n */\nconst NO_ERRORS_SCHEMA = {\n    name: 'no-errors-schema'\n};\n\nlet shouldThrowErrorOnUnknownElement = false;\n/**\n * Sets a strict mode for JIT-compiled components to throw an error on unknown elements,\n * instead of just logging the error.\n * (for AOT-compiled ones this check happens at build time).\n */\nfunction ɵsetUnknownElementStrictMode(shouldThrow) {\n    shouldThrowErrorOnUnknownElement = shouldThrow;\n}\n/**\n * Gets the current value of the strict mode.\n */\nfunction ɵgetUnknownElementStrictMode() {\n    return shouldThrowErrorOnUnknownElement;\n}\nlet shouldThrowErrorOnUnknownProperty = false;\n/**\n * Sets a strict mode for JIT-compiled components to throw an error on unknown properties,\n * instead of just logging the error.\n * (for AOT-compiled ones this check happens at build time).\n */\nfunction ɵsetUnknownPropertyStrictMode(shouldThrow) {\n    shouldThrowErrorOnUnknownProperty = shouldThrow;\n}\n/**\n * Gets the current value of the strict mode.\n */\nfunction ɵgetUnknownPropertyStrictMode() {\n    return shouldThrowErrorOnUnknownProperty;\n}\n/**\n * Validates that the element is known at runtime and produces\n * an error if it's not the case.\n * This check is relevant for JIT-compiled components (for AOT-compiled\n * ones this check happens at build time).\n *\n * The element is considered known if either:\n * - it's a known HTML element\n * - it's a known custom element\n * - the element matches any directive\n * - the element is allowed by one of the schemas\n *\n * @param element Element to validate\n * @param lView An `LView` that represents a current component that is being rendered\n * @param tagName Name of the tag to check\n * @param schemas Array of schemas\n * @param hasDirectives Boolean indicating that the element matches any directive\n */\nfunction validateElementIsKnown(element, lView, tagName, schemas, hasDirectives) {\n    // If `schemas` is set to `null`, that's an indication that this Component was compiled in AOT\n    // mode where this check happens at compile time. In JIT mode, `schemas` is always present and\n    // defined as an array (as an empty array in case `schemas` field is not defined) and we should\n    // execute the check below.\n    if (schemas === null)\n        return;\n    // If the element matches any directive, it's considered as valid.\n    if (!hasDirectives && tagName !== null) {\n        // The element is unknown if it's an instance of HTMLUnknownElement, or it isn't registered\n        // as a custom element. Note that unknown elements with a dash in their name won't be instances\n        // of HTMLUnknownElement in browsers that support web components.\n        const isUnknown = \n        // Note that we can't check for `typeof HTMLUnknownElement === 'function'` because\n        // Domino doesn't expose HTMLUnknownElement globally.\n        (typeof HTMLUnknownElement !== 'undefined' && HTMLUnknownElement &&\n            element instanceof HTMLUnknownElement) ||\n            (typeof customElements !== 'undefined' && tagName.indexOf('-') > -1 &&\n                !customElements.get(tagName));\n        if (isUnknown && !matchingSchemas(schemas, tagName)) {\n            const isHostStandalone = isHostComponentStandalone(lView);\n            const templateLocation = getTemplateLocationDetails(lView);\n            const schemas = `'${isHostStandalone ? '@Component' : '@NgModule'}.schemas'`;\n            let message = `'${tagName}' is not a known element${templateLocation}:\\n`;\n            message += `1. If '${tagName}' is an Angular component, then verify that it is ${isHostStandalone ? 'included in the \\'@Component.imports\\' of this component' :\n                'a part of an @NgModule where this component is declared'}.\\n`;\n            if (tagName && tagName.indexOf('-') > -1) {\n                message +=\n                    `2. If '${tagName}' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the ${schemas} of this component to suppress this message.`;\n            }\n            else {\n                message +=\n                    `2. To allow any element add 'NO_ERRORS_SCHEMA' to the ${schemas} of this component.`;\n            }\n            if (shouldThrowErrorOnUnknownElement) {\n                throw new RuntimeError(304 /* RuntimeErrorCode.UNKNOWN_ELEMENT */, message);\n            }\n            else {\n                console.error(formatRuntimeError(304 /* RuntimeErrorCode.UNKNOWN_ELEMENT */, message));\n            }\n        }\n    }\n}\n/**\n * Validates that the property of the element is known at runtime and returns\n * false if it's not the case.\n * This check is relevant for JIT-compiled components (for AOT-compiled\n * ones this check happens at build time).\n *\n * The property is considered known if either:\n * - it's a known property of the element\n * - the element is allowed by one of the schemas\n * - the property is used for animations\n *\n * @param element Element to validate\n * @param propName Name of the property to check\n * @param tagName Name of the tag hosting the property\n * @param schemas Array of schemas\n */\nfunction isPropertyValid(element, propName, tagName, schemas) {\n    // If `schemas` is set to `null`, that's an indication that this Component was compiled in AOT\n    // mode where this check happens at compile time. In JIT mode, `schemas` is always present and\n    // defined as an array (as an empty array in case `schemas` field is not defined) and we should\n    // execute the check below.\n    if (schemas === null)\n        return true;\n    // The property is considered valid if the element matches the schema, it exists on the element,\n    // or it is synthetic, and we are in a browser context (web worker nodes should be skipped).\n    if (matchingSchemas(schemas, tagName) || propName in element || isAnimationProp(propName)) {\n        return true;\n    }\n    // Note: `typeof Node` returns 'function' in most browsers, but is undefined with domino.\n    return typeof Node === 'undefined' || Node === null || !(element instanceof Node);\n}\n/**\n * Logs or throws an error that a property is not supported on an element.\n *\n * @param propName Name of the invalid property\n * @param tagName Name of the tag hosting the property\n * @param nodeType Type of the node hosting the property\n * @param lView An `LView` that represents a current component\n */\nfunction handleUnknownPropertyError(propName, tagName, nodeType, lView) {\n    // Special-case a situation when a structural directive is applied to\n    // an `<ng-template>` element, for example: `<ng-template *ngIf=\"true\">`.\n    // In this case the compiler generates the `ɵɵtemplate` instruction with\n    // the `null` as the tagName. The directive matching logic at runtime relies\n    // on this effect (see `isInlineTemplate`), thus using the 'ng-template' as\n    // a default value of the `tNode.value` is not feasible at this moment.\n    if (!tagName && nodeType === 4 /* TNodeType.Container */) {\n        tagName = 'ng-template';\n    }\n    const isHostStandalone = isHostComponentStandalone(lView);\n    const templateLocation = getTemplateLocationDetails(lView);\n    let message = `Can't bind to '${propName}' since it isn't a known property of '${tagName}'${templateLocation}.`;\n    const schemas = `'${isHostStandalone ? '@Component' : '@NgModule'}.schemas'`;\n    const importLocation = isHostStandalone ?\n        'included in the \\'@Component.imports\\' of this component' :\n        'a part of an @NgModule where this component is declared';\n    if (KNOWN_CONTROL_FLOW_DIRECTIVES.has(propName)) {\n        // Most likely this is a control flow directive (such as `*ngIf`) used in\n        // a template, but the directive or the `CommonModule` is not imported.\n        const correspondingImport = KNOWN_CONTROL_FLOW_DIRECTIVES.get(propName);\n        message += `\\nIf the '${propName}' is an Angular control flow directive, ` +\n            `please make sure that either the '${correspondingImport}' directive or the 'CommonModule' is ${importLocation}.`;\n    }\n    else {\n        // May be an Angular component, which is not imported/declared?\n        message += `\\n1. If '${tagName}' is an Angular component and it has the ` +\n            `'${propName}' input, then verify that it is ${importLocation}.`;\n        // May be a Web Component?\n        if (tagName && tagName.indexOf('-') > -1) {\n            message += `\\n2. If '${tagName}' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' ` +\n                `to the ${schemas} of this component to suppress this message.`;\n            message += `\\n3. To allow any property add 'NO_ERRORS_SCHEMA' to ` +\n                `the ${schemas} of this component.`;\n        }\n        else {\n            // If it's expected, the error can be suppressed by the `NO_ERRORS_SCHEMA` schema.\n            message += `\\n2. To allow any property add 'NO_ERRORS_SCHEMA' to ` +\n                `the ${schemas} of this component.`;\n        }\n    }\n    reportUnknownPropertyError(message);\n}\nfunction reportUnknownPropertyError(message) {\n    if (shouldThrowErrorOnUnknownProperty) {\n        throw new RuntimeError(303 /* RuntimeErrorCode.UNKNOWN_BINDING */, message);\n    }\n    else {\n        console.error(formatRuntimeError(303 /* RuntimeErrorCode.UNKNOWN_BINDING */, message));\n    }\n}\n/**\n * WARNING: this is a **dev-mode only** function (thus should always be guarded by the `ngDevMode`)\n * and must **not** be used in production bundles. The function makes megamorphic reads, which might\n * be too slow for production mode and also it relies on the constructor function being available.\n *\n * Gets a reference to the host component def (where a current component is declared).\n *\n * @param lView An `LView` that represents a current component that is being rendered.\n */\nfunction getDeclarationComponentDef(lView) {\n    !ngDevMode && throwError('Must never be called in production mode');\n    const declarationLView = lView[DECLARATION_COMPONENT_VIEW];\n    const context = declarationLView[CONTEXT];\n    // Unable to obtain a context.\n    if (!context)\n        return null;\n    return context.constructor ? getComponentDef(context.constructor) : null;\n}\n/**\n * WARNING: this is a **dev-mode only** function (thus should always be guarded by the `ngDevMode`)\n * and must **not** be used in production bundles. The function makes megamorphic reads, which might\n * be too slow for production mode.\n *\n * Checks if the current component is declared inside of a standalone component template.\n *\n * @param lView An `LView` that represents a current component that is being rendered.\n */\nfunction isHostComponentStandalone(lView) {\n    !ngDevMode && throwError('Must never be called in production mode');\n    const componentDef = getDeclarationComponentDef(lView);\n    // Treat host component as non-standalone if we can't obtain the def.\n    return !!componentDef?.standalone;\n}\n/**\n * WARNING: this is a **dev-mode only** function (thus should always be guarded by the `ngDevMode`)\n * and must **not** be used in production bundles. The function makes megamorphic reads, which might\n * be too slow for production mode.\n *\n * Constructs a string describing the location of the host component template. The function is used\n * in dev mode to produce error messages.\n *\n * @param lView An `LView` that represents a current component that is being rendered.\n */\nfunction getTemplateLocationDetails(lView) {\n    !ngDevMode && throwError('Must never be called in production mode');\n    const hostComponentDef = getDeclarationComponentDef(lView);\n    const componentClassName = hostComponentDef?.type?.name;\n    return componentClassName ? ` (used in the '${componentClassName}' component template)` : '';\n}\n/**\n * The set of known control flow directives and their corresponding imports.\n * We use this set to produce a more precises error message with a note\n * that the `CommonModule` should also be included.\n */\nconst KNOWN_CONTROL_FLOW_DIRECTIVES = new Map([\n    ['ngIf', 'NgIf'], ['ngFor', 'NgFor'], ['ngSwitchCase', 'NgSwitchCase'],\n    ['ngSwitchDefault', 'NgSwitchDefault']\n]);\n/**\n * Returns true if the tag name is allowed by specified schemas.\n * @param schemas Array of schemas\n * @param tagName Name of the tag\n */\nfunction matchingSchemas(schemas, tagName) {\n    if (schemas !== null) {\n        for (let i = 0; i < schemas.length; i++) {\n            const schema = schemas[i];\n            if (schema === NO_ERRORS_SCHEMA ||\n                schema === CUSTOM_ELEMENTS_SCHEMA && tagName && tagName.indexOf('-') > -1) {\n                return true;\n            }\n        }\n    }\n    return false;\n}\n\n/**\n * Flags for renderer-specific style modifiers.\n * @publicApi\n */\nvar RendererStyleFlags2;\n(function (RendererStyleFlags2) {\n    // TODO(misko): This needs to be refactored into a separate file so that it can be imported from\n    // `node_manipulation.ts` Currently doing the import cause resolution order to change and fails\n    // the tests. The work around is to have hard coded value in `node_manipulation.ts` for now.\n    /**\n     * Marks a style as important.\n     */\n    RendererStyleFlags2[RendererStyleFlags2[\"Important\"] = 1] = \"Important\";\n    /**\n     * Marks a style as using dash case naming (this-is-dash-case).\n     */\n    RendererStyleFlags2[RendererStyleFlags2[\"DashCase\"] = 2] = \"DashCase\";\n})(RendererStyleFlags2 || (RendererStyleFlags2 = {}));\n\n/**\n * Disallowed strings in the comment.\n *\n * see: https://html.spec.whatwg.org/multipage/syntax.html#comments\n */\nconst COMMENT_DISALLOWED = /^>|^->|<!--|-->|--!>|<!-$/g;\n/**\n * Delimiter in the disallowed strings which needs to be wrapped with zero with character.\n */\nconst COMMENT_DELIMITER = /(<|>)/;\nconst COMMENT_DELIMITER_ESCAPED = '\\u200B$1\\u200B';\n/**\n * Escape the content of comment strings so that it can be safely inserted into a comment node.\n *\n * The issue is that HTML does not specify any way to escape comment end text inside the comment.\n * Consider: `<!-- The way you close a comment is with \">\", and \"->\" at the beginning or by \"-->\" or\n * \"--!>\" at the end. -->`. Above the `\"-->\"` is meant to be text not an end to the comment. This\n * can be created programmatically through DOM APIs. (`<!--` are also disallowed.)\n *\n * see: https://html.spec.whatwg.org/multipage/syntax.html#comments\n *\n * ```\n * div.innerHTML = div.innerHTML\n * ```\n *\n * One would expect that the above code would be safe to do, but it turns out that because comment\n * text is not escaped, the comment may contain text which will prematurely close the comment\n * opening up the application for XSS attack. (In SSR we programmatically create comment nodes which\n * may contain such text and expect them to be safe.)\n *\n * This function escapes the comment text by looking for comment delimiters (`<` and `>`) and\n * surrounding them with `_>_` where the `_` is a zero width space `\\u200B`. The result is that if a\n * comment contains any of the comment start/end delimiters (such as `<!--`, `-->` or `--!>`) the\n * text it will render normally but it will not cause the HTML parser to close/open the comment.\n *\n * @param value text to make safe for comment node by escaping the comment open/close character\n *     sequence.\n */\nfunction escapeCommentText(value) {\n    return value.replace(COMMENT_DISALLOWED, (text) => text.replace(COMMENT_DELIMITER, COMMENT_DELIMITER_ESCAPED));\n}\n\n// Keeps track of the currently-active LViews.\nconst TRACKED_LVIEWS = new Map();\n// Used for generating unique IDs for LViews.\nlet uniqueIdCounter = 0;\n/** Gets a unique ID that can be assigned to an LView. */\nfunction getUniqueLViewId() {\n    return uniqueIdCounter++;\n}\n/** Starts tracking an LView. */\nfunction registerLView(lView) {\n    ngDevMode && assertNumber(lView[ID], 'LView must have an ID in order to be registered');\n    TRACKED_LVIEWS.set(lView[ID], lView);\n}\n/** Gets an LView by its unique ID. */\nfunction getLViewById(id) {\n    ngDevMode && assertNumber(id, 'ID used for LView lookup must be a number');\n    return TRACKED_LVIEWS.get(id) || null;\n}\n/** Stops tracking an LView. */\nfunction unregisterLView(lView) {\n    ngDevMode && assertNumber(lView[ID], 'Cannot stop tracking an LView that does not have an ID');\n    TRACKED_LVIEWS.delete(lView[ID]);\n}\n\n/**\n * The internal view context which is specific to a given DOM element, directive or\n * component instance. Each value in here (besides the LView and element node details)\n * can be present, null or undefined. If undefined then it implies the value has not been\n * looked up yet, otherwise, if null, then a lookup was executed and nothing was found.\n *\n * Each value will get filled when the respective value is examined within the getContext\n * function. The component, element and each directive instance will share the same instance\n * of the context.\n */\nclass LContext {\n    /** Component's parent view data. */\n    get lView() {\n        return getLViewById(this.lViewId);\n    }\n    constructor(\n    /**\n     * ID of the component's parent view data.\n     */\n    lViewId, \n    /**\n     * The index instance of the node.\n     */\n    nodeIndex, \n    /**\n     * The instance of the DOM node that is attached to the lNode.\n     */\n    native) {\n        this.lViewId = lViewId;\n        this.nodeIndex = nodeIndex;\n        this.native = native;\n    }\n}\n\n/**\n * Returns the matching `LContext` data for a given DOM node, directive or component instance.\n *\n * This function will examine the provided DOM element, component, or directive instance\\'s\n * monkey-patched property to derive the `LContext` data. Once called then the monkey-patched\n * value will be that of the newly created `LContext`.\n *\n * If the monkey-patched value is the `LView` instance then the context value for that\n * target will be created and the monkey-patch reference will be updated. Therefore when this\n * function is called it may mutate the provided element\\'s, component\\'s or any of the associated\n * directive\\'s monkey-patch values.\n *\n * If the monkey-patch value is not detected then the code will walk up the DOM until an element\n * is found which contains a monkey-patch reference. When that occurs then the provided element\n * will be updated with a new context (which is then returned). If the monkey-patch value is not\n * detected for a component/directive instance then it will throw an error (all components and\n * directives should be automatically monkey-patched by ivy).\n *\n * @param target Component, Directive or DOM Node.\n */\nfunction getLContext(target) {\n    let mpValue = readPatchedData(target);\n    if (mpValue) {\n        // only when it's an array is it considered an LView instance\n        // ... otherwise it's an already constructed LContext instance\n        if (isLView(mpValue)) {\n            const lView = mpValue;\n            let nodeIndex;\n            let component = undefined;\n            let directives = undefined;\n            if (isComponentInstance(target)) {\n                nodeIndex = findViaComponent(lView, target);\n                if (nodeIndex == -1) {\n                    throw new Error('The provided component was not found in the application');\n                }\n                component = target;\n            }\n            else if (isDirectiveInstance(target)) {\n                nodeIndex = findViaDirective(lView, target);\n                if (nodeIndex == -1) {\n                    throw new Error('The provided directive was not found in the application');\n                }\n                directives = getDirectivesAtNodeIndex(nodeIndex, lView);\n            }\n            else {\n                nodeIndex = findViaNativeElement(lView, target);\n                if (nodeIndex == -1) {\n                    return null;\n                }\n            }\n            // the goal is not to fill the entire context full of data because the lookups\n            // are expensive. Instead, only the target data (the element, component, container, ICU\n            // expression or directive details) are filled into the context. If called multiple times\n            // with different target values then the missing target data will be filled in.\n            const native = unwrapRNode(lView[nodeIndex]);\n            const existingCtx = readPatchedData(native);\n            const context = (existingCtx && !Array.isArray(existingCtx)) ?\n                existingCtx :\n                createLContext(lView, nodeIndex, native);\n            // only when the component has been discovered then update the monkey-patch\n            if (component && context.component === undefined) {\n                context.component = component;\n                attachPatchData(context.component, context);\n            }\n            // only when the directives have been discovered then update the monkey-patch\n            if (directives && context.directives === undefined) {\n                context.directives = directives;\n                for (let i = 0; i < directives.length; i++) {\n                    attachPatchData(directives[i], context);\n                }\n            }\n            attachPatchData(context.native, context);\n            mpValue = context;\n        }\n    }\n    else {\n        const rElement = target;\n        ngDevMode && assertDomNode(rElement);\n        // if the context is not found then we need to traverse upwards up the DOM\n        // to find the nearest element that has already been monkey patched with data\n        let parent = rElement;\n        while (parent = parent.parentNode) {\n            const parentContext = readPatchedData(parent);\n            if (parentContext) {\n                const lView = Array.isArray(parentContext) ? parentContext : parentContext.lView;\n                // the edge of the app was also reached here through another means\n                // (maybe because the DOM was changed manually).\n                if (!lView) {\n                    return null;\n                }\n                const index = findViaNativeElement(lView, rElement);\n                if (index >= 0) {\n                    const native = unwrapRNode(lView[index]);\n                    const context = createLContext(lView, index, native);\n                    attachPatchData(native, context);\n                    mpValue = context;\n                    break;\n                }\n            }\n        }\n    }\n    return mpValue || null;\n}\n/**\n * Creates an empty instance of a `LContext` context\n */\nfunction createLContext(lView, nodeIndex, native) {\n    return new LContext(lView[ID], nodeIndex, native);\n}\n/**\n * Takes a component instance and returns the view for that component.\n *\n * @param componentInstance\n * @returns The component's view\n */\nfunction getComponentViewByInstance(componentInstance) {\n    let patchedData = readPatchedData(componentInstance);\n    let lView;\n    if (isLView(patchedData)) {\n        const contextLView = patchedData;\n        const nodeIndex = findViaComponent(contextLView, componentInstance);\n        lView = getComponentLViewByIndex(nodeIndex, contextLView);\n        const context = createLContext(contextLView, nodeIndex, lView[HOST]);\n        context.component = componentInstance;\n        attachPatchData(componentInstance, context);\n        attachPatchData(context.native, context);\n    }\n    else {\n        const context = patchedData;\n        const contextLView = context.lView;\n        ngDevMode && assertLView(contextLView);\n        lView = getComponentLViewByIndex(context.nodeIndex, contextLView);\n    }\n    return lView;\n}\n/**\n * This property will be monkey-patched on elements, components and directives.\n */\nconst MONKEY_PATCH_KEY_NAME = '__ngContext__';\n/**\n * Assigns the given data to the given target (which could be a component,\n * directive or DOM node instance) using monkey-patching.\n */\nfunction attachPatchData(target, data) {\n    ngDevMode && assertDefined(target, 'Target expected');\n    // Only attach the ID of the view in order to avoid memory leaks (see #41047). We only do this\n    // for `LView`, because we have control over when an `LView` is created and destroyed, whereas\n    // we can't know when to remove an `LContext`.\n    if (isLView(data)) {\n        target[MONKEY_PATCH_KEY_NAME] = data[ID];\n        registerLView(data);\n    }\n    else {\n        target[MONKEY_PATCH_KEY_NAME] = data;\n    }\n}\n/**\n * Returns the monkey-patch value data present on the target (which could be\n * a component, directive or a DOM node).\n */\nfunction readPatchedData(target) {\n    ngDevMode && assertDefined(target, 'Target expected');\n    const data = target[MONKEY_PATCH_KEY_NAME];\n    return (typeof data === 'number') ? getLViewById(data) : data || null;\n}\nfunction readPatchedLView(target) {\n    const value = readPatchedData(target);\n    if (value) {\n        return (isLView(value) ? value : value.lView);\n    }\n    return null;\n}\nfunction isComponentInstance(instance) {\n    return instance && instance.constructor && instance.constructor.ɵcmp;\n}\nfunction isDirectiveInstance(instance) {\n    return instance && instance.constructor && instance.constructor.ɵdir;\n}\n/**\n * Locates the element within the given LView and returns the matching index\n */\nfunction findViaNativeElement(lView, target) {\n    const tView = lView[TVIEW];\n    for (let i = HEADER_OFFSET; i < tView.bindingStartIndex; i++) {\n        if (unwrapRNode(lView[i]) === target) {\n            return i;\n        }\n    }\n    return -1;\n}\n/**\n * Locates the next tNode (child, sibling or parent).\n */\nfunction traverseNextElement(tNode) {\n    if (tNode.child) {\n        return tNode.child;\n    }\n    else if (tNode.next) {\n        return tNode.next;\n    }\n    else {\n        // Let's take the following template: <div><span>text</span></div><component/>\n        // After checking the text node, we need to find the next parent that has a \"next\" TNode,\n        // in this case the parent `div`, so that we can find the component.\n        while (tNode.parent && !tNode.parent.next) {\n            tNode = tNode.parent;\n        }\n        return tNode.parent && tNode.parent.next;\n    }\n}\n/**\n * Locates the component within the given LView and returns the matching index\n */\nfunction findViaComponent(lView, componentInstance) {\n    const componentIndices = lView[TVIEW].components;\n    if (componentIndices) {\n        for (let i = 0; i < componentIndices.length; i++) {\n            const elementComponentIndex = componentIndices[i];\n            const componentView = getComponentLViewByIndex(elementComponentIndex, lView);\n            if (componentView[CONTEXT] === componentInstance) {\n                return elementComponentIndex;\n            }\n        }\n    }\n    else {\n        const rootComponentView = getComponentLViewByIndex(HEADER_OFFSET, lView);\n        const rootComponent = rootComponentView[CONTEXT];\n        if (rootComponent === componentInstance) {\n            // we are dealing with the root element here therefore we know that the\n            // element is the very first element after the HEADER data in the lView\n            return HEADER_OFFSET;\n        }\n    }\n    return -1;\n}\n/**\n * Locates the directive within the given LView and returns the matching index\n */\nfunction findViaDirective(lView, directiveInstance) {\n    // if a directive is monkey patched then it will (by default)\n    // have a reference to the LView of the current view. The\n    // element bound to the directive being search lives somewhere\n    // in the view data. We loop through the nodes and check their\n    // list of directives for the instance.\n    let tNode = lView[TVIEW].firstChild;\n    while (tNode) {\n        const directiveIndexStart = tNode.directiveStart;\n        const directiveIndexEnd = tNode.directiveEnd;\n        for (let i = directiveIndexStart; i < directiveIndexEnd; i++) {\n            if (lView[i] === directiveInstance) {\n                return tNode.index;\n            }\n        }\n        tNode = traverseNextElement(tNode);\n    }\n    return -1;\n}\n/**\n * Returns a list of directives applied to a node at a specific index. The list includes\n * directives matched by selector and any host directives, but it excludes components.\n * Use `getComponentAtNodeIndex` to find the component applied to a node.\n *\n * @param nodeIndex The node index\n * @param lView The target view data\n */\nfunction getDirectivesAtNodeIndex(nodeIndex, lView) {\n    const tNode = lView[TVIEW].data[nodeIndex];\n    if (tNode.directiveStart === 0)\n        return EMPTY_ARRAY;\n    const results = [];\n    for (let i = tNode.directiveStart; i < tNode.directiveEnd; i++) {\n        const directiveInstance = lView[i];\n        if (!isComponentInstance(directiveInstance)) {\n            results.push(directiveInstance);\n        }\n    }\n    return results;\n}\nfunction getComponentAtNodeIndex(nodeIndex, lView) {\n    const tNode = lView[TVIEW].data[nodeIndex];\n    const { directiveStart, componentOffset } = tNode;\n    return componentOffset > -1 ? lView[directiveStart + componentOffset] : null;\n}\n/**\n * Returns a map of local references (local reference name => element or directive instance) that\n * exist on a given element.\n */\nfunction discoverLocalRefs(lView, nodeIndex) {\n    const tNode = lView[TVIEW].data[nodeIndex];\n    if (tNode && tNode.localNames) {\n        const result = {};\n        let localIndex = tNode.index + 1;\n        for (let i = 0; i < tNode.localNames.length; i += 2) {\n            result[tNode.localNames[i]] = lView[localIndex];\n            localIndex++;\n        }\n        return result;\n    }\n    return null;\n}\n\nlet _icuContainerIterate;\n/**\n * Iterator which provides ability to visit all of the `TIcuContainerNode` root `RNode`s.\n */\nfunction icuContainerIterate(tIcuContainerNode, lView) {\n    return _icuContainerIterate(tIcuContainerNode, lView);\n}\n/**\n * Ensures that `IcuContainerVisitor`'s implementation is present.\n *\n * This function is invoked when i18n instruction comes across an ICU. The purpose is to allow the\n * bundler to tree shake ICU logic and only load it if ICU instruction is executed.\n */\nfunction ensureIcuContainerVisitorLoaded(loader) {\n    if (_icuContainerIterate === undefined) {\n        // Do not inline this function. We want to keep `ensureIcuContainerVisitorLoaded` light, so it\n        // can be inlined into call-site.\n        _icuContainerIterate = loader();\n    }\n}\n\n/**\n * Gets the parent LView of the passed LView, if the PARENT is an LContainer, will get the parent of\n * that LContainer, which is an LView\n * @param lView the lView whose parent to get\n */\nfunction getLViewParent(lView) {\n    ngDevMode && assertLView(lView);\n    const parent = lView[PARENT];\n    return isLContainer(parent) ? parent[PARENT] : parent;\n}\n/**\n * Retrieve the root view from any component or `LView` by walking the parent `LView` until\n * reaching the root `LView`.\n *\n * @param componentOrLView any component or `LView`\n */\nfunction getRootView(componentOrLView) {\n    ngDevMode && assertDefined(componentOrLView, 'component');\n    let lView = isLView(componentOrLView) ? componentOrLView : readPatchedLView(componentOrLView);\n    while (lView && !(lView[FLAGS] & 256 /* LViewFlags.IsRoot */)) {\n        lView = getLViewParent(lView);\n    }\n    ngDevMode && assertLView(lView);\n    return lView;\n}\n/**\n * Returns the context information associated with the application where the target is situated. It\n * does this by walking the parent views until it gets to the root view, then getting the context\n * off of that.\n *\n * @param viewOrComponent the `LView` or component to get the root context for.\n */\nfunction getRootContext(viewOrComponent) {\n    const rootView = getRootView(viewOrComponent);\n    ngDevMode &&\n        assertDefined(rootView[CONTEXT], 'Root view has no context. Perhaps it is disconnected?');\n    return rootView[CONTEXT];\n}\n/**\n * Gets the first `LContainer` in the LView or `null` if none exists.\n */\nfunction getFirstLContainer(lView) {\n    return getNearestLContainer(lView[CHILD_HEAD]);\n}\n/**\n * Gets the next `LContainer` that is a sibling of the given container.\n */\nfunction getNextLContainer(container) {\n    return getNearestLContainer(container[NEXT]);\n}\nfunction getNearestLContainer(viewOrContainer) {\n    while (viewOrContainer !== null && !isLContainer(viewOrContainer)) {\n        viewOrContainer = viewOrContainer[NEXT];\n    }\n    return viewOrContainer;\n}\n\n/**\n * NOTE: for performance reasons, the possible actions are inlined within the function instead of\n * being passed as an argument.\n */\nfunction applyToElementOrContainer(action, renderer, parent, lNodeToHandle, beforeNode) {\n    // If this slot was allocated for a text node dynamically created by i18n, the text node itself\n    // won't be created until i18nApply() in the update block, so this node should be skipped.\n    // For more info, see \"ICU expressions should work inside an ngTemplateOutlet inside an ngFor\"\n    // in `i18n_spec.ts`.\n    if (lNodeToHandle != null) {\n        let lContainer;\n        let isComponent = false;\n        // We are expecting an RNode, but in the case of a component or LContainer the `RNode` is\n        // wrapped in an array which needs to be unwrapped. We need to know if it is a component and if\n        // it has LContainer so that we can process all of those cases appropriately.\n        if (isLContainer(lNodeToHandle)) {\n            lContainer = lNodeToHandle;\n        }\n        else if (isLView(lNodeToHandle)) {\n            isComponent = true;\n            ngDevMode && assertDefined(lNodeToHandle[HOST], 'HOST must be defined for a component LView');\n            lNodeToHandle = lNodeToHandle[HOST];\n        }\n        const rNode = unwrapRNode(lNodeToHandle);\n        if (action === 0 /* WalkTNodeTreeAction.Create */ && parent !== null) {\n            if (beforeNode == null) {\n                nativeAppendChild(renderer, parent, rNode);\n            }\n            else {\n                nativeInsertBefore(renderer, parent, rNode, beforeNode || null, true);\n            }\n        }\n        else if (action === 1 /* WalkTNodeTreeAction.Insert */ && parent !== null) {\n            nativeInsertBefore(renderer, parent, rNode, beforeNode || null, true);\n        }\n        else if (action === 2 /* WalkTNodeTreeAction.Detach */) {\n            nativeRemoveNode(renderer, rNode, isComponent);\n        }\n        else if (action === 3 /* WalkTNodeTreeAction.Destroy */) {\n            ngDevMode && ngDevMode.rendererDestroyNode++;\n            renderer.destroyNode(rNode);\n        }\n        if (lContainer != null) {\n            applyContainer(renderer, action, lContainer, parent, beforeNode);\n        }\n    }\n}\nfunction createTextNode(renderer, value) {\n    ngDevMode && ngDevMode.rendererCreateTextNode++;\n    ngDevMode && ngDevMode.rendererSetText++;\n    return renderer.createText(value);\n}\nfunction updateTextNode(renderer, rNode, value) {\n    ngDevMode && ngDevMode.rendererSetText++;\n    renderer.setValue(rNode, value);\n}\nfunction createCommentNode(renderer, value) {\n    ngDevMode && ngDevMode.rendererCreateComment++;\n    return renderer.createComment(escapeCommentText(value));\n}\n/**\n * Creates a native element from a tag name, using a renderer.\n * @param renderer A renderer to use\n * @param name the tag name\n * @param namespace Optional namespace for element.\n * @returns the element created\n */\nfunction createElementNode(renderer, name, namespace) {\n    ngDevMode && ngDevMode.rendererCreateElement++;\n    return renderer.createElement(name, namespace);\n}\n/**\n * Removes all DOM elements associated with a view.\n *\n * Because some root nodes of the view may be containers, we sometimes need\n * to propagate deeply into the nested containers to remove all elements in the\n * views beneath it.\n *\n * @param tView The `TView' of the `LView` from which elements should be added or removed\n * @param lView The view from which elements should be added or removed\n */\nfunction removeViewFromContainer(tView, lView) {\n    const renderer = lView[RENDERER];\n    applyView(tView, lView, renderer, 2 /* WalkTNodeTreeAction.Detach */, null, null);\n    lView[HOST] = null;\n    lView[T_HOST] = null;\n}\n/**\n * Adds all DOM elements associated with a view.\n *\n * Because some root nodes of the view may be containers, we sometimes need\n * to propagate deeply into the nested containers to add all elements in the\n * views beneath it.\n *\n * @param tView The `TView' of the `LView` from which elements should be added or removed\n * @param parentTNode The `TNode` where the `LView` should be attached to.\n * @param renderer Current renderer to use for DOM manipulations.\n * @param lView The view from which elements should be added or removed\n * @param parentNativeNode The parent `RElement` where it should be inserted into.\n * @param beforeNode The node before which elements should be added, if insert mode\n */\nfunction addViewToContainer(tView, parentTNode, renderer, lView, parentNativeNode, beforeNode) {\n    lView[HOST] = parentNativeNode;\n    lView[T_HOST] = parentTNode;\n    applyView(tView, lView, renderer, 1 /* WalkTNodeTreeAction.Insert */, parentNativeNode, beforeNode);\n}\n/**\n * Detach a `LView` from the DOM by detaching its nodes.\n *\n * @param tView The `TView' of the `LView` to be detached\n * @param lView the `LView` to be detached.\n */\nfunction renderDetachView(tView, lView) {\n    applyView(tView, lView, lView[RENDERER], 2 /* WalkTNodeTreeAction.Detach */, null, null);\n}\n/**\n * Traverses down and up the tree of views and containers to remove listeners and\n * call onDestroy callbacks.\n *\n * Notes:\n *  - Because it's used for onDestroy calls, it needs to be bottom-up.\n *  - Must process containers instead of their views to avoid splicing\n *  when views are destroyed and re-added.\n *  - Using a while loop because it's faster than recursion\n *  - Destroy only called on movement to sibling or movement to parent (laterally or up)\n *\n *  @param rootView The view to destroy\n */\nfunction destroyViewTree(rootView) {\n    // If the view has no children, we can clean it up and return early.\n    let lViewOrLContainer = rootView[CHILD_HEAD];\n    if (!lViewOrLContainer) {\n        return cleanUpView(rootView[TVIEW], rootView);\n    }\n    while (lViewOrLContainer) {\n        let next = null;\n        if (isLView(lViewOrLContainer)) {\n            // If LView, traverse down to child.\n            next = lViewOrLContainer[CHILD_HEAD];\n        }\n        else {\n            ngDevMode && assertLContainer(lViewOrLContainer);\n            // If container, traverse down to its first LView.\n            const firstView = lViewOrLContainer[CONTAINER_HEADER_OFFSET];\n            if (firstView)\n                next = firstView;\n        }\n        if (!next) {\n            // Only clean up view when moving to the side or up, as destroy hooks\n            // should be called in order from the bottom up.\n            while (lViewOrLContainer && !lViewOrLContainer[NEXT] && lViewOrLContainer !== rootView) {\n                if (isLView(lViewOrLContainer)) {\n                    cleanUpView(lViewOrLContainer[TVIEW], lViewOrLContainer);\n                }\n                lViewOrLContainer = lViewOrLContainer[PARENT];\n            }\n            if (lViewOrLContainer === null)\n                lViewOrLContainer = rootView;\n            if (isLView(lViewOrLContainer)) {\n                cleanUpView(lViewOrLContainer[TVIEW], lViewOrLContainer);\n            }\n            next = lViewOrLContainer && lViewOrLContainer[NEXT];\n        }\n        lViewOrLContainer = next;\n    }\n}\n/**\n * Inserts a view into a container.\n *\n * This adds the view to the container's array of active views in the correct\n * position. It also adds the view's elements to the DOM if the container isn't a\n * root node of another view (in that case, the view's elements will be added when\n * the container's parent view is added later).\n *\n * @param tView The `TView' of the `LView` to insert\n * @param lView The view to insert\n * @param lContainer The container into which the view should be inserted\n * @param index Which index in the container to insert the child view into\n */\nfunction insertView(tView, lView, lContainer, index) {\n    ngDevMode && assertLView(lView);\n    ngDevMode && assertLContainer(lContainer);\n    const indexInContainer = CONTAINER_HEADER_OFFSET + index;\n    const containerLength = lContainer.length;\n    if (index > 0) {\n        // This is a new view, we need to add it to the children.\n        lContainer[indexInContainer - 1][NEXT] = lView;\n    }\n    if (index < containerLength - CONTAINER_HEADER_OFFSET) {\n        lView[NEXT] = lContainer[indexInContainer];\n        addToArray(lContainer, CONTAINER_HEADER_OFFSET + index, lView);\n    }\n    else {\n        lContainer.push(lView);\n        lView[NEXT] = null;\n    }\n    lView[PARENT] = lContainer;\n    // track views where declaration and insertion points are different\n    const declarationLContainer = lView[DECLARATION_LCONTAINER];\n    if (declarationLContainer !== null && lContainer !== declarationLContainer) {\n        trackMovedView(declarationLContainer, lView);\n    }\n    // notify query that a new view has been added\n    const lQueries = lView[QUERIES];\n    if (lQueries !== null) {\n        lQueries.insertView(tView);\n    }\n    // Sets the attached flag\n    lView[FLAGS] |= 64 /* LViewFlags.Attached */;\n}\n/**\n * Track views created from the declaration container (TemplateRef) and inserted into a\n * different LContainer.\n */\nfunction trackMovedView(declarationContainer, lView) {\n    ngDevMode && assertDefined(lView, 'LView required');\n    ngDevMode && assertLContainer(declarationContainer);\n    const movedViews = declarationContainer[MOVED_VIEWS];\n    const insertedLContainer = lView[PARENT];\n    ngDevMode && assertLContainer(insertedLContainer);\n    const insertedComponentLView = insertedLContainer[PARENT][DECLARATION_COMPONENT_VIEW];\n    ngDevMode && assertDefined(insertedComponentLView, 'Missing insertedComponentLView');\n    const declaredComponentLView = lView[DECLARATION_COMPONENT_VIEW];\n    ngDevMode && assertDefined(declaredComponentLView, 'Missing declaredComponentLView');\n    if (declaredComponentLView !== insertedComponentLView) {\n        // At this point the declaration-component is not same as insertion-component; this means that\n        // this is a transplanted view. Mark the declared lView as having transplanted views so that\n        // those views can participate in CD.\n        declarationContainer[HAS_TRANSPLANTED_VIEWS] = true;\n    }\n    if (movedViews === null) {\n        declarationContainer[MOVED_VIEWS] = [lView];\n    }\n    else {\n        movedViews.push(lView);\n    }\n}\nfunction detachMovedView(declarationContainer, lView) {\n    ngDevMode && assertLContainer(declarationContainer);\n    ngDevMode &&\n        assertDefined(declarationContainer[MOVED_VIEWS], 'A projected view should belong to a non-empty projected views collection');\n    const movedViews = declarationContainer[MOVED_VIEWS];\n    const declarationViewIndex = movedViews.indexOf(lView);\n    const insertionLContainer = lView[PARENT];\n    ngDevMode && assertLContainer(insertionLContainer);\n    // If the view was marked for refresh but then detached before it was checked (where the flag\n    // would be cleared and the counter decremented), we need to decrement the view counter here\n    // instead.\n    if (lView[FLAGS] & 512 /* LViewFlags.RefreshTransplantedView */) {\n        lView[FLAGS] &= ~512 /* LViewFlags.RefreshTransplantedView */;\n        updateTransplantedViewCount(insertionLContainer, -1);\n    }\n    movedViews.splice(declarationViewIndex, 1);\n}\n/**\n * Detaches a view from a container.\n *\n * This method removes the view from the container's array of active views. It also\n * removes the view's elements from the DOM.\n *\n * @param lContainer The container from which to detach a view\n * @param removeIndex The index of the view to detach\n * @returns Detached LView instance.\n */\nfunction detachView(lContainer, removeIndex) {\n    if (lContainer.length <= CONTAINER_HEADER_OFFSET)\n        return;\n    const indexInContainer = CONTAINER_HEADER_OFFSET + removeIndex;\n    const viewToDetach = lContainer[indexInContainer];\n    if (viewToDetach) {\n        const declarationLContainer = viewToDetach[DECLARATION_LCONTAINER];\n        if (declarationLContainer !== null && declarationLContainer !== lContainer) {\n            detachMovedView(declarationLContainer, viewToDetach);\n        }\n        if (removeIndex > 0) {\n            lContainer[indexInContainer - 1][NEXT] = viewToDetach[NEXT];\n        }\n        const removedLView = removeFromArray(lContainer, CONTAINER_HEADER_OFFSET + removeIndex);\n        removeViewFromContainer(viewToDetach[TVIEW], viewToDetach);\n        // notify query that a view has been removed\n        const lQueries = removedLView[QUERIES];\n        if (lQueries !== null) {\n            lQueries.detachView(removedLView[TVIEW]);\n        }\n        viewToDetach[PARENT] = null;\n        viewToDetach[NEXT] = null;\n        // Unsets the attached flag\n        viewToDetach[FLAGS] &= ~64 /* LViewFlags.Attached */;\n    }\n    return viewToDetach;\n}\n/**\n * A standalone function which destroys an LView,\n * conducting clean up (e.g. removing listeners, calling onDestroys).\n *\n * @param tView The `TView' of the `LView` to be destroyed\n * @param lView The view to be destroyed.\n */\nfunction destroyLView(tView, lView) {\n    if (!(lView[FLAGS] & 128 /* LViewFlags.Destroyed */)) {\n        const renderer = lView[RENDERER];\n        if (renderer.destroyNode) {\n            applyView(tView, lView, renderer, 3 /* WalkTNodeTreeAction.Destroy */, null, null);\n        }\n        destroyViewTree(lView);\n    }\n}\n/**\n * Calls onDestroys hooks for all directives and pipes in a given view and then removes all\n * listeners. Listeners are removed as the last step so events delivered in the onDestroys hooks\n * can be propagated to @Output listeners.\n *\n * @param tView `TView` for the `LView` to clean up.\n * @param lView The LView to clean up\n */\nfunction cleanUpView(tView, lView) {\n    if (!(lView[FLAGS] & 128 /* LViewFlags.Destroyed */)) {\n        // Usually the Attached flag is removed when the view is detached from its parent, however\n        // if it's a root view, the flag won't be unset hence why we're also removing on destroy.\n        lView[FLAGS] &= ~64 /* LViewFlags.Attached */;\n        // Mark the LView as destroyed *before* executing the onDestroy hooks. An onDestroy hook\n        // runs arbitrary user code, which could include its own `viewRef.destroy()` (or similar). If\n        // We don't flag the view as destroyed before the hooks, this could lead to an infinite loop.\n        // This also aligns with the ViewEngine behavior. It also means that the onDestroy hook is\n        // really more of an \"afterDestroy\" hook if you think about it.\n        lView[FLAGS] |= 128 /* LViewFlags.Destroyed */;\n        executeOnDestroys(tView, lView);\n        processCleanups(tView, lView);\n        // For component views only, the local renderer is destroyed at clean up time.\n        if (lView[TVIEW].type === 1 /* TViewType.Component */) {\n            ngDevMode && ngDevMode.rendererDestroy++;\n            lView[RENDERER].destroy();\n        }\n        const declarationContainer = lView[DECLARATION_LCONTAINER];\n        // we are dealing with an embedded view that is still inserted into a container\n        if (declarationContainer !== null && isLContainer(lView[PARENT])) {\n            // and this is a projected view\n            if (declarationContainer !== lView[PARENT]) {\n                detachMovedView(declarationContainer, lView);\n            }\n            // For embedded views still attached to a container: remove query result from this view.\n            const lQueries = lView[QUERIES];\n            if (lQueries !== null) {\n                lQueries.detachView(tView);\n            }\n        }\n        // Unregister the view once everything else has been cleaned up.\n        unregisterLView(lView);\n    }\n}\n/** Removes listeners and unsubscribes from output subscriptions */\nfunction processCleanups(tView, lView) {\n    const tCleanup = tView.cleanup;\n    const lCleanup = lView[CLEANUP];\n    // `LCleanup` contains both share information with `TCleanup` as well as instance specific\n    // information appended at the end. We need to know where the end of the `TCleanup` information\n    // is, and we track this with `lastLCleanupIndex`.\n    let lastLCleanupIndex = -1;\n    if (tCleanup !== null) {\n        for (let i = 0; i < tCleanup.length - 1; i += 2) {\n            if (typeof tCleanup[i] === 'string') {\n                // This is a native DOM listener. It will occupy 4 entries in the TCleanup array (hence i +=\n                // 2 at the end of this block).\n                const targetIdx = tCleanup[i + 3];\n                ngDevMode && assertNumber(targetIdx, 'cleanup target must be a number');\n                if (targetIdx >= 0) {\n                    // unregister\n                    lCleanup[lastLCleanupIndex = targetIdx]();\n                }\n                else {\n                    // Subscription\n                    lCleanup[lastLCleanupIndex = -targetIdx].unsubscribe();\n                }\n                i += 2;\n            }\n            else {\n                // This is a cleanup function that is grouped with the index of its context\n                const context = lCleanup[lastLCleanupIndex = tCleanup[i + 1]];\n                tCleanup[i].call(context);\n            }\n        }\n    }\n    if (lCleanup !== null) {\n        for (let i = lastLCleanupIndex + 1; i < lCleanup.length; i++) {\n            const instanceCleanupFn = lCleanup[i];\n            ngDevMode && assertFunction(instanceCleanupFn, 'Expecting instance cleanup function.');\n            instanceCleanupFn();\n        }\n        lView[CLEANUP] = null;\n    }\n}\n/** Calls onDestroy hooks for this view */\nfunction executeOnDestroys(tView, lView) {\n    let destroyHooks;\n    if (tView != null && (destroyHooks = tView.destroyHooks) != null) {\n        for (let i = 0; i < destroyHooks.length; i += 2) {\n            const context = lView[destroyHooks[i]];\n            // Only call the destroy hook if the context has been requested.\n            if (!(context instanceof NodeInjectorFactory)) {\n                const toCall = destroyHooks[i + 1];\n                if (Array.isArray(toCall)) {\n                    for (let j = 0; j < toCall.length; j += 2) {\n                        const callContext = context[toCall[j]];\n                        const hook = toCall[j + 1];\n                        profiler(4 /* ProfilerEvent.LifecycleHookStart */, callContext, hook);\n                        try {\n                            hook.call(callContext);\n                        }\n                        finally {\n                            profiler(5 /* ProfilerEvent.LifecycleHookEnd */, callContext, hook);\n                        }\n                    }\n                }\n                else {\n                    profiler(4 /* ProfilerEvent.LifecycleHookStart */, context, toCall);\n                    try {\n                        toCall.call(context);\n                    }\n                    finally {\n                        profiler(5 /* ProfilerEvent.LifecycleHookEnd */, context, toCall);\n                    }\n                }\n            }\n        }\n    }\n}\n/**\n * Returns a native element if a node can be inserted into the given parent.\n *\n * There are two reasons why we may not be able to insert a element immediately.\n * - Projection: When creating a child content element of a component, we have to skip the\n *   insertion because the content of a component will be projected.\n *   `<component><content>delayed due to projection</content></component>`\n * - Parent container is disconnected: This can happen when we are inserting a view into\n *   parent container, which itself is disconnected. For example the parent container is part\n *   of a View which has not be inserted or is made for projection but has not been inserted\n *   into destination.\n *\n * @param tView: Current `TView`.\n * @param tNode: `TNode` for which we wish to retrieve render parent.\n * @param lView: Current `LView`.\n */\nfunction getParentRElement(tView, tNode, lView) {\n    return getClosestRElement(tView, tNode.parent, lView);\n}\n/**\n * Get closest `RElement` or `null` if it can't be found.\n *\n * If `TNode` is `TNodeType.Element` => return `RElement` at `LView[tNode.index]` location.\n * If `TNode` is `TNodeType.ElementContainer|IcuContain` => return the parent (recursively).\n * If `TNode` is `null` then return host `RElement`:\n *   - return `null` if projection\n *   - return `null` if parent container is disconnected (we have no parent.)\n *\n * @param tView: Current `TView`.\n * @param tNode: `TNode` for which we wish to retrieve `RElement` (or `null` if host element is\n *     needed).\n * @param lView: Current `LView`.\n * @returns `null` if the `RElement` can't be determined at this time (no parent / projection)\n */\nfunction getClosestRElement(tView, tNode, lView) {\n    let parentTNode = tNode;\n    // Skip over element and ICU containers as those are represented by a comment node and\n    // can't be used as a render parent.\n    while (parentTNode !== null &&\n        (parentTNode.type & (8 /* TNodeType.ElementContainer */ | 32 /* TNodeType.Icu */))) {\n        tNode = parentTNode;\n        parentTNode = tNode.parent;\n    }\n    // If the parent tNode is null, then we are inserting across views: either into an embedded view\n    // or a component view.\n    if (parentTNode === null) {\n        // We are inserting a root element of the component view into the component host element and\n        // it should always be eager.\n        return lView[HOST];\n    }\n    else {\n        ngDevMode && assertTNodeType(parentTNode, 3 /* TNodeType.AnyRNode */ | 4 /* TNodeType.Container */);\n        const { componentOffset } = parentTNode;\n        if (componentOffset > -1) {\n            ngDevMode && assertTNodeForLView(parentTNode, lView);\n            const { encapsulation } = tView.data[parentTNode.directiveStart + componentOffset];\n            // We've got a parent which is an element in the current view. We just need to verify if the\n            // parent element is not a component. Component's content nodes are not inserted immediately\n            // because they will be projected, and so doing insert at this point would be wasteful.\n            // Since the projection would then move it to its final destination. Note that we can't\n            // make this assumption when using the Shadow DOM, because the native projection placeholders\n            // (<content> or <slot>) have to be in place as elements are being inserted.\n            if (encapsulation === ViewEncapsulation$1.None ||\n                encapsulation === ViewEncapsulation$1.Emulated) {\n                return null;\n            }\n        }\n        return getNativeByTNode(parentTNode, lView);\n    }\n}\n/**\n * Inserts a native node before another native node for a given parent.\n * This is a utility function that can be used when native nodes were determined.\n */\nfunction nativeInsertBefore(renderer, parent, child, beforeNode, isMove) {\n    ngDevMode && ngDevMode.rendererInsertBefore++;\n    renderer.insertBefore(parent, child, beforeNode, isMove);\n}\nfunction nativeAppendChild(renderer, parent, child) {\n    ngDevMode && ngDevMode.rendererAppendChild++;\n    ngDevMode && assertDefined(parent, 'parent node must be defined');\n    renderer.appendChild(parent, child);\n}\nfunction nativeAppendOrInsertBefore(renderer, parent, child, beforeNode, isMove) {\n    if (beforeNode !== null) {\n        nativeInsertBefore(renderer, parent, child, beforeNode, isMove);\n    }\n    else {\n        nativeAppendChild(renderer, parent, child);\n    }\n}\n/** Removes a node from the DOM given its native parent. */\nfunction nativeRemoveChild(renderer, parent, child, isHostElement) {\n    renderer.removeChild(parent, child, isHostElement);\n}\n/** Checks if an element is a `<template>` node. */\nfunction isTemplateNode(node) {\n    return node.tagName === 'TEMPLATE' && node.content !== undefined;\n}\n/**\n * Returns a native parent of a given native node.\n */\nfunction nativeParentNode(renderer, node) {\n    return renderer.parentNode(node);\n}\n/**\n * Returns a native sibling of a given native node.\n */\nfunction nativeNextSibling(renderer, node) {\n    return renderer.nextSibling(node);\n}\n/**\n * Find a node in front of which `currentTNode` should be inserted.\n *\n * This method determines the `RNode` in front of which we should insert the `currentRNode`. This\n * takes `TNode.insertBeforeIndex` into account if i18n code has been invoked.\n *\n * @param parentTNode parent `TNode`\n * @param currentTNode current `TNode` (The node which we would like to insert into the DOM)\n * @param lView current `LView`\n */\nfunction getInsertInFrontOfRNode(parentTNode, currentTNode, lView) {\n    return _getInsertInFrontOfRNodeWithI18n(parentTNode, currentTNode, lView);\n}\n/**\n * Find a node in front of which `currentTNode` should be inserted. (Does not take i18n into\n * account)\n *\n * This method determines the `RNode` in front of which we should insert the `currentRNode`. This\n * does not take `TNode.insertBeforeIndex` into account.\n *\n * @param parentTNode parent `TNode`\n * @param currentTNode current `TNode` (The node which we would like to insert into the DOM)\n * @param lView current `LView`\n */\nfunction getInsertInFrontOfRNodeWithNoI18n(parentTNode, currentTNode, lView) {\n    if (parentTNode.type & (8 /* TNodeType.ElementContainer */ | 32 /* TNodeType.Icu */)) {\n        return getNativeByTNode(parentTNode, lView);\n    }\n    return null;\n}\n/**\n * Tree shakable boundary for `getInsertInFrontOfRNodeWithI18n` function.\n *\n * This function will only be set if i18n code runs.\n */\nlet _getInsertInFrontOfRNodeWithI18n = getInsertInFrontOfRNodeWithNoI18n;\n/**\n * Tree shakable boundary for `processI18nInsertBefore` function.\n *\n * This function will only be set if i18n code runs.\n */\nlet _processI18nInsertBefore;\nfunction setI18nHandling(getInsertInFrontOfRNodeWithI18n, processI18nInsertBefore) {\n    _getInsertInFrontOfRNodeWithI18n = getInsertInFrontOfRNodeWithI18n;\n    _processI18nInsertBefore = processI18nInsertBefore;\n}\n/**\n * Appends the `child` native node (or a collection of nodes) to the `parent`.\n *\n * @param tView The `TView' to be appended\n * @param lView The current LView\n * @param childRNode The native child (or children) that should be appended\n * @param childTNode The TNode of the child element\n */\nfunction appendChild(tView, lView, childRNode, childTNode) {\n    const parentRNode = getParentRElement(tView, childTNode, lView);\n    const renderer = lView[RENDERER];\n    const parentTNode = childTNode.parent || lView[T_HOST];\n    const anchorNode = getInsertInFrontOfRNode(parentTNode, childTNode, lView);\n    if (parentRNode != null) {\n        if (Array.isArray(childRNode)) {\n            for (let i = 0; i < childRNode.length; i++) {\n                nativeAppendOrInsertBefore(renderer, parentRNode, childRNode[i], anchorNode, false);\n            }\n        }\n        else {\n            nativeAppendOrInsertBefore(renderer, parentRNode, childRNode, anchorNode, false);\n        }\n    }\n    _processI18nInsertBefore !== undefined &&\n        _processI18nInsertBefore(renderer, childTNode, lView, childRNode, parentRNode);\n}\n/**\n * Returns the first native node for a given LView, starting from the provided TNode.\n *\n * Native nodes are returned in the order in which those appear in the native tree (DOM).\n */\nfunction getFirstNativeNode(lView, tNode) {\n    if (tNode !== null) {\n        ngDevMode &&\n            assertTNodeType(tNode, 3 /* TNodeType.AnyRNode */ | 12 /* TNodeType.AnyContainer */ | 32 /* TNodeType.Icu */ | 16 /* TNodeType.Projection */);\n        const tNodeType = tNode.type;\n        if (tNodeType & 3 /* TNodeType.AnyRNode */) {\n            return getNativeByTNode(tNode, lView);\n        }\n        else if (tNodeType & 4 /* TNodeType.Container */) {\n            return getBeforeNodeForView(-1, lView[tNode.index]);\n        }\n        else if (tNodeType & 8 /* TNodeType.ElementContainer */) {\n            const elIcuContainerChild = tNode.child;\n            if (elIcuContainerChild !== null) {\n                return getFirstNativeNode(lView, elIcuContainerChild);\n            }\n            else {\n                const rNodeOrLContainer = lView[tNode.index];\n                if (isLContainer(rNodeOrLContainer)) {\n                    return getBeforeNodeForView(-1, rNodeOrLContainer);\n                }\n                else {\n                    return unwrapRNode(rNodeOrLContainer);\n                }\n            }\n        }\n        else if (tNodeType & 32 /* TNodeType.Icu */) {\n            let nextRNode = icuContainerIterate(tNode, lView);\n            let rNode = nextRNode();\n            // If the ICU container has no nodes, than we use the ICU anchor as the node.\n            return rNode || unwrapRNode(lView[tNode.index]);\n        }\n        else {\n            const projectionNodes = getProjectionNodes(lView, tNode);\n            if (projectionNodes !== null) {\n                if (Array.isArray(projectionNodes)) {\n                    return projectionNodes[0];\n                }\n                const parentView = getLViewParent(lView[DECLARATION_COMPONENT_VIEW]);\n                ngDevMode && assertParentView(parentView);\n                return getFirstNativeNode(parentView, projectionNodes);\n            }\n            else {\n                return getFirstNativeNode(lView, tNode.next);\n            }\n        }\n    }\n    return null;\n}\nfunction getProjectionNodes(lView, tNode) {\n    if (tNode !== null) {\n        const componentView = lView[DECLARATION_COMPONENT_VIEW];\n        const componentHost = componentView[T_HOST];\n        const slotIdx = tNode.projection;\n        ngDevMode && assertProjectionSlots(lView);\n        return componentHost.projection[slotIdx];\n    }\n    return null;\n}\nfunction getBeforeNodeForView(viewIndexInContainer, lContainer) {\n    const nextViewIndex = CONTAINER_HEADER_OFFSET + viewIndexInContainer + 1;\n    if (nextViewIndex < lContainer.length) {\n        const lView = lContainer[nextViewIndex];\n        const firstTNodeOfView = lView[TVIEW].firstChild;\n        if (firstTNodeOfView !== null) {\n            return getFirstNativeNode(lView, firstTNodeOfView);\n        }\n    }\n    return lContainer[NATIVE];\n}\n/**\n * Removes a native node itself using a given renderer. To remove the node we are looking up its\n * parent from the native tree as not all platforms / browsers support the equivalent of\n * node.remove().\n *\n * @param renderer A renderer to be used\n * @param rNode The native node that should be removed\n * @param isHostElement A flag indicating if a node to be removed is a host of a component.\n */\nfunction nativeRemoveNode(renderer, rNode, isHostElement) {\n    ngDevMode && ngDevMode.rendererRemoveNode++;\n    const nativeParent = nativeParentNode(renderer, rNode);\n    if (nativeParent) {\n        nativeRemoveChild(renderer, nativeParent, rNode, isHostElement);\n    }\n}\n/**\n * Performs the operation of `action` on the node. Typically this involves inserting or removing\n * nodes on the LView or projection boundary.\n */\nfunction applyNodes(renderer, action, tNode, lView, parentRElement, beforeNode, isProjection) {\n    while (tNode != null) {\n        ngDevMode && assertTNodeForLView(tNode, lView);\n        ngDevMode &&\n            assertTNodeType(tNode, 3 /* TNodeType.AnyRNode */ | 12 /* TNodeType.AnyContainer */ | 16 /* TNodeType.Projection */ | 32 /* TNodeType.Icu */);\n        const rawSlotValue = lView[tNode.index];\n        const tNodeType = tNode.type;\n        if (isProjection) {\n            if (action === 0 /* WalkTNodeTreeAction.Create */) {\n                rawSlotValue && attachPatchData(unwrapRNode(rawSlotValue), lView);\n                tNode.flags |= 2 /* TNodeFlags.isProjected */;\n            }\n        }\n        if ((tNode.flags & 32 /* TNodeFlags.isDetached */) !== 32 /* TNodeFlags.isDetached */) {\n            if (tNodeType & 8 /* TNodeType.ElementContainer */) {\n                applyNodes(renderer, action, tNode.child, lView, parentRElement, beforeNode, false);\n                applyToElementOrContainer(action, renderer, parentRElement, rawSlotValue, beforeNode);\n            }\n            else if (tNodeType & 32 /* TNodeType.Icu */) {\n                const nextRNode = icuContainerIterate(tNode, lView);\n                let rNode;\n                while (rNode = nextRNode()) {\n                    applyToElementOrContainer(action, renderer, parentRElement, rNode, beforeNode);\n                }\n                applyToElementOrContainer(action, renderer, parentRElement, rawSlotValue, beforeNode);\n            }\n            else if (tNodeType & 16 /* TNodeType.Projection */) {\n                applyProjectionRecursive(renderer, action, lView, tNode, parentRElement, beforeNode);\n            }\n            else {\n                ngDevMode && assertTNodeType(tNode, 3 /* TNodeType.AnyRNode */ | 4 /* TNodeType.Container */);\n                applyToElementOrContainer(action, renderer, parentRElement, rawSlotValue, beforeNode);\n            }\n        }\n        tNode = isProjection ? tNode.projectionNext : tNode.next;\n    }\n}\nfunction applyView(tView, lView, renderer, action, parentRElement, beforeNode) {\n    applyNodes(renderer, action, tView.firstChild, lView, parentRElement, beforeNode, false);\n}\n/**\n * `applyProjection` performs operation on the projection.\n *\n * Inserting a projection requires us to locate the projected nodes from the parent component. The\n * complication is that those nodes themselves could be re-projected from their parent component.\n *\n * @param tView The `TView` of `LView` which needs to be inserted, detached, destroyed\n * @param lView The `LView` which needs to be inserted, detached, destroyed.\n * @param tProjectionNode node to project\n */\nfunction applyProjection(tView, lView, tProjectionNode) {\n    const renderer = lView[RENDERER];\n    const parentRNode = getParentRElement(tView, tProjectionNode, lView);\n    const parentTNode = tProjectionNode.parent || lView[T_HOST];\n    let beforeNode = getInsertInFrontOfRNode(parentTNode, tProjectionNode, lView);\n    applyProjectionRecursive(renderer, 0 /* WalkTNodeTreeAction.Create */, lView, tProjectionNode, parentRNode, beforeNode);\n}\n/**\n * `applyProjectionRecursive` performs operation on the projection specified by `action` (insert,\n * detach, destroy)\n *\n * Inserting a projection requires us to locate the projected nodes from the parent component. The\n * complication is that those nodes themselves could be re-projected from their parent component.\n *\n * @param renderer Render to use\n * @param action action to perform (insert, detach, destroy)\n * @param lView The LView which needs to be inserted, detached, destroyed.\n * @param tProjectionNode node to project\n * @param parentRElement parent DOM element for insertion/removal.\n * @param beforeNode Before which node the insertions should happen.\n */\nfunction applyProjectionRecursive(renderer, action, lView, tProjectionNode, parentRElement, beforeNode) {\n    const componentLView = lView[DECLARATION_COMPONENT_VIEW];\n    const componentNode = componentLView[T_HOST];\n    ngDevMode &&\n        assertEqual(typeof tProjectionNode.projection, 'number', 'expecting projection index');\n    const nodeToProjectOrRNodes = componentNode.projection[tProjectionNode.projection];\n    if (Array.isArray(nodeToProjectOrRNodes)) {\n        // This should not exist, it is a bit of a hack. When we bootstrap a top level node and we\n        // need to support passing projectable nodes, so we cheat and put them in the TNode\n        // of the Host TView. (Yes we put instance info at the T Level). We can get away with it\n        // because we know that that TView is not shared and therefore it will not be a problem.\n        // This should be refactored and cleaned up.\n        for (let i = 0; i < nodeToProjectOrRNodes.length; i++) {\n            const rNode = nodeToProjectOrRNodes[i];\n            applyToElementOrContainer(action, renderer, parentRElement, rNode, beforeNode);\n        }\n    }\n    else {\n        let nodeToProject = nodeToProjectOrRNodes;\n        const projectedComponentLView = componentLView[PARENT];\n        applyNodes(renderer, action, nodeToProject, projectedComponentLView, parentRElement, beforeNode, true);\n    }\n}\n/**\n * `applyContainer` performs an operation on the container and its views as specified by\n * `action` (insert, detach, destroy)\n *\n * Inserting a Container is complicated by the fact that the container may have Views which\n * themselves have containers or projections.\n *\n * @param renderer Renderer to use\n * @param action action to perform (insert, detach, destroy)\n * @param lContainer The LContainer which needs to be inserted, detached, destroyed.\n * @param parentRElement parent DOM element for insertion/removal.\n * @param beforeNode Before which node the insertions should happen.\n */\nfunction applyContainer(renderer, action, lContainer, parentRElement, beforeNode) {\n    ngDevMode && assertLContainer(lContainer);\n    const anchor = lContainer[NATIVE]; // LContainer has its own before node.\n    const native = unwrapRNode(lContainer);\n    // An LContainer can be created dynamically on any node by injecting ViewContainerRef.\n    // Asking for a ViewContainerRef on an element will result in a creation of a separate anchor\n    // node (comment in the DOM) that will be different from the LContainer's host node. In this\n    // particular case we need to execute action on 2 nodes:\n    // - container's host node (this is done in the executeActionOnElementOrContainer)\n    // - container's host node (this is done here)\n    if (anchor !== native) {\n        // This is very strange to me (Misko). I would expect that the native is same as anchor. I\n        // don't see a reason why they should be different, but they are.\n        //\n        // If they are we need to process the second anchor as well.\n        applyToElementOrContainer(action, renderer, parentRElement, anchor, beforeNode);\n    }\n    for (let i = CONTAINER_HEADER_OFFSET; i < lContainer.length; i++) {\n        const lView = lContainer[i];\n        applyView(lView[TVIEW], lView, renderer, action, parentRElement, anchor);\n    }\n}\n/**\n * Writes class/style to element.\n *\n * @param renderer Renderer to use.\n * @param isClassBased `true` if it should be written to `class` (`false` to write to `style`)\n * @param rNode The Node to write to.\n * @param prop Property to write to. This would be the class/style name.\n * @param value Value to write. If `null`/`undefined`/`false` this is considered a remove (set/add\n *        otherwise).\n */\nfunction applyStyling(renderer, isClassBased, rNode, prop, value) {\n    if (isClassBased) {\n        // We actually want JS true/false here because any truthy value should add the class\n        if (!value) {\n            ngDevMode && ngDevMode.rendererRemoveClass++;\n            renderer.removeClass(rNode, prop);\n        }\n        else {\n            ngDevMode && ngDevMode.rendererAddClass++;\n            renderer.addClass(rNode, prop);\n        }\n    }\n    else {\n        let flags = prop.indexOf('-') === -1 ? undefined : RendererStyleFlags2.DashCase;\n        if (value == null /** || value === undefined */) {\n            ngDevMode && ngDevMode.rendererRemoveStyle++;\n            renderer.removeStyle(rNode, prop, flags);\n        }\n        else {\n            // A value is important if it ends with `!important`. The style\n            // parser strips any semicolons at the end of the value.\n            const isImportant = typeof value === 'string' ? value.endsWith('!important') : false;\n            if (isImportant) {\n                // !important has to be stripped from the value for it to be valid.\n                value = value.slice(0, -10);\n                flags |= RendererStyleFlags2.Important;\n            }\n            ngDevMode && ngDevMode.rendererSetStyle++;\n            renderer.setStyle(rNode, prop, value, flags);\n        }\n    }\n}\n/**\n * Write `cssText` to `RElement`.\n *\n * This function does direct write without any reconciliation. Used for writing initial values, so\n * that static styling values do not pull in the style parser.\n *\n * @param renderer Renderer to use\n * @param element The element which needs to be updated.\n * @param newValue The new class list to write.\n */\nfunction writeDirectStyle(renderer, element, newValue) {\n    ngDevMode && assertString(newValue, '\\'newValue\\' should be a string');\n    renderer.setAttribute(element, 'style', newValue);\n    ngDevMode && ngDevMode.rendererSetStyle++;\n}\n/**\n * Write `className` to `RElement`.\n *\n * This function does direct write without any reconciliation. Used for writing initial values, so\n * that static styling values do not pull in the style parser.\n *\n * @param renderer Renderer to use\n * @param element The element which needs to be updated.\n * @param newValue The new class list to write.\n */\nfunction writeDirectClass(renderer, element, newValue) {\n    ngDevMode && assertString(newValue, '\\'newValue\\' should be a string');\n    if (newValue === '') {\n        // There are tests in `google3` which expect `element.getAttribute('class')` to be `null`.\n        renderer.removeAttribute(element, 'class');\n    }\n    else {\n        renderer.setAttribute(element, 'class', newValue);\n    }\n    ngDevMode && ngDevMode.rendererSetClassName++;\n}\n/** Sets up the static DOM attributes on an `RNode`. */\nfunction setupStaticAttributes(renderer, element, tNode) {\n    const { mergedAttrs, classes, styles } = tNode;\n    if (mergedAttrs !== null) {\n        setUpAttributes(renderer, element, mergedAttrs);\n    }\n    if (classes !== null) {\n        writeDirectClass(renderer, element, classes);\n    }\n    if (styles !== null) {\n        writeDirectStyle(renderer, element, styles);\n    }\n}\n\n/**\n * @fileoverview\n * A module to facilitate use of a Trusted Types policy internally within\n * Angular. It lazily constructs the Trusted Types policy, providing helper\n * utilities for promoting strings to Trusted Types. When Trusted Types are not\n * available, strings are used as a fallback.\n * @security All use of this module is security-sensitive and should go through\n * security review.\n */\n/**\n * The Trusted Types policy, or null if Trusted Types are not\n * enabled/supported, or undefined if the policy has not been created yet.\n */\nlet policy$1;\n/**\n * Returns the Trusted Types policy, or null if Trusted Types are not\n * enabled/supported. The first call to this function will create the policy.\n */\nfunction getPolicy$1() {\n    if (policy$1 === undefined) {\n        policy$1 = null;\n        if (_global.trustedTypes) {\n            try {\n                policy$1 = _global.trustedTypes.createPolicy('angular', {\n                    createHTML: (s) => s,\n                    createScript: (s) => s,\n                    createScriptURL: (s) => s,\n                });\n            }\n            catch {\n                // trustedTypes.createPolicy throws if called with a name that is\n                // already registered, even in report-only mode. Until the API changes,\n                // catch the error not to break the applications functionally. In such\n                // cases, the code will fall back to using strings.\n            }\n        }\n    }\n    return policy$1;\n}\n/**\n * Unsafely promote a string to a TrustedHTML, falling back to strings when\n * Trusted Types are not available.\n * @security This is a security-sensitive function; any use of this function\n * must go through security review. In particular, it must be assured that the\n * provided string will never cause an XSS vulnerability if used in a context\n * that will be interpreted as HTML by a browser, e.g. when assigning to\n * element.innerHTML.\n */\nfunction trustedHTMLFromString(html) {\n    return getPolicy$1()?.createHTML(html) || html;\n}\n/**\n * Unsafely promote a string to a TrustedScript, falling back to strings when\n * Trusted Types are not available.\n * @security In particular, it must be assured that the provided string will\n * never cause an XSS vulnerability if used in a context that will be\n * interpreted and executed as a script by a browser, e.g. when calling eval.\n */\nfunction trustedScriptFromString(script) {\n    return getPolicy$1()?.createScript(script) || script;\n}\n/**\n * Unsafely promote a string to a TrustedScriptURL, falling back to strings\n * when Trusted Types are not available.\n * @security This is a security-sensitive function; any use of this function\n * must go through security review. In particular, it must be assured that the\n * provided string will never cause an XSS vulnerability if used in a context\n * that will cause a browser to load and execute a resource, e.g. when\n * assigning to script.src.\n */\nfunction trustedScriptURLFromString(url) {\n    return getPolicy$1()?.createScriptURL(url) || url;\n}\n/**\n * Unsafely call the Function constructor with the given string arguments. It\n * is only available in development mode, and should be stripped out of\n * production code.\n * @security This is a security-sensitive function; any use of this function\n * must go through security review. In particular, it must be assured that it\n * is only called from development code, as use in production code can lead to\n * XSS vulnerabilities.\n */\nfunction newTrustedFunctionForDev(...args) {\n    if (typeof ngDevMode === 'undefined') {\n        throw new Error('newTrustedFunctionForDev should never be called in production');\n    }\n    if (!_global.trustedTypes) {\n        // In environments that don't support Trusted Types, fall back to the most\n        // straightforward implementation:\n        return new Function(...args);\n    }\n    // Chrome currently does not support passing TrustedScript to the Function\n    // constructor. The following implements the workaround proposed on the page\n    // below, where the Chromium bug is also referenced:\n    // https://github.com/w3c/webappsec-trusted-types/wiki/Trusted-Types-for-function-constructor\n    const fnArgs = args.slice(0, -1).join(',');\n    const fnBody = args[args.length - 1];\n    const body = `(function anonymous(${fnArgs}\n) { ${fnBody}\n})`;\n    // Using eval directly confuses the compiler and prevents this module from\n    // being stripped out of JS binaries even if not used. The global['eval']\n    // indirection fixes that.\n    const fn = _global['eval'](trustedScriptFromString(body));\n    if (fn.bind === undefined) {\n        // Workaround for a browser bug that only exists in Chrome 83, where passing\n        // a TrustedScript to eval just returns the TrustedScript back without\n        // evaluating it. In that case, fall back to the most straightforward\n        // implementation:\n        return new Function(...args);\n    }\n    // To completely mimic the behavior of calling \"new Function\", two more\n    // things need to happen:\n    // 1. Stringifying the resulting function should return its source code\n    fn.toString = () => body;\n    // 2. When calling the resulting function, `this` should refer to `global`\n    return fn.bind(_global);\n    // When Trusted Types support in Function constructors is widely available,\n    // the implementation of this function can be simplified to:\n    // return new Function(...args.map(a => trustedScriptFromString(a)));\n}\n\n/**\n * Validation function invoked at runtime for each binding that might potentially\n * represent a security-sensitive attribute of an <iframe>.\n * See `IFRAME_SECURITY_SENSITIVE_ATTRS` in the\n * `packages/compiler/src/schema/dom_security_schema.ts` script for the full list\n * of such attributes.\n *\n * @codeGenApi\n */\nfunction ɵɵvalidateIframeAttribute(attrValue, tagName, attrName) {\n    const lView = getLView();\n    const tNode = getSelectedTNode();\n    const element = getNativeByTNode(tNode, lView);\n    // Restrict any dynamic bindings of security-sensitive attributes/properties\n    // on an <iframe> for security reasons.\n    if (tNode.type === 2 /* TNodeType.Element */ && tagName.toLowerCase() === 'iframe') {\n        const iframe = element;\n        // Unset previously applied `src` and `srcdoc` if we come across a situation when\n        // a security-sensitive attribute is set later via an attribute/property binding.\n        iframe.src = '';\n        iframe.srcdoc = trustedHTMLFromString('');\n        // Also remove the <iframe> from the document.\n        nativeRemoveNode(lView[RENDERER], iframe);\n        const errorMessage = ngDevMode &&\n            `Angular has detected that the \\`${attrName}\\` was applied ` +\n                `as a binding to an <iframe>${getTemplateLocationDetails(lView)}. ` +\n                `For security reasons, the \\`${attrName}\\` can be set on an <iframe> ` +\n                `as a static attribute only. \\n` +\n                `To fix this, switch the \\`${attrName}\\` binding to a static attribute ` +\n                `in a template or in host bindings section.`;\n        throw new RuntimeError(-910 /* RuntimeErrorCode.UNSAFE_IFRAME_ATTRS */, errorMessage);\n    }\n    return attrValue;\n}\n\n/**\n * Most of the use of `document` in Angular is from within the DI system so it is possible to simply\n * inject the `DOCUMENT` token and are done.\n *\n * Ivy is special because it does not rely upon the DI and must get hold of the document some other\n * way.\n *\n * The solution is to define `getDocument()` and `setDocument()` top-level functions for ivy.\n * Wherever ivy needs the global document, it calls `getDocument()` instead.\n *\n * When running ivy outside of a browser environment, it is necessary to call `setDocument()` to\n * tell ivy what the global `document` is.\n *\n * Angular does this for us in each of the standard platforms (`Browser`, `Server`, and `WebWorker`)\n * by calling `setDocument()` when providing the `DOCUMENT` token.\n */\nlet DOCUMENT = undefined;\n/**\n * Tell ivy what the `document` is for this platform.\n *\n * It is only necessary to call this if the current platform is not a browser.\n *\n * @param document The object representing the global `document` in this environment.\n */\nfunction setDocument(document) {\n    DOCUMENT = document;\n}\n/**\n * Access the object that represents the `document` for this platform.\n *\n * Ivy calls this whenever it needs to access the `document` object.\n * For example to create the renderer or to do sanitization.\n */\nfunction getDocument() {\n    if (DOCUMENT !== undefined) {\n        return DOCUMENT;\n    }\n    else if (typeof document !== 'undefined') {\n        return document;\n    }\n    // No \"document\" can be found. This should only happen if we are running ivy outside Angular and\n    // the current platform is not a browser. Since this is not a supported scenario at the moment\n    // this should not happen in Angular apps.\n    // Once we support running ivy outside of Angular we will need to publish `setDocument()` as a\n    // public API. Meanwhile we just return `undefined` and let the application fail.\n    return undefined;\n}\n\n/**\n * @fileoverview\n * A module to facilitate use of a Trusted Types policy internally within\n * Angular specifically for bypassSecurityTrust* and custom sanitizers. It\n * lazily constructs the Trusted Types policy, providing helper utilities for\n * promoting strings to Trusted Types. When Trusted Types are not available,\n * strings are used as a fallback.\n * @security All use of this module is security-sensitive and should go through\n * security review.\n */\n/**\n * The Trusted Types policy, or null if Trusted Types are not\n * enabled/supported, or undefined if the policy has not been created yet.\n */\nlet policy;\n/**\n * Returns the Trusted Types policy, or null if Trusted Types are not\n * enabled/supported. The first call to this function will create the policy.\n */\nfunction getPolicy() {\n    if (policy === undefined) {\n        policy = null;\n        if (_global.trustedTypes) {\n            try {\n                policy = _global.trustedTypes\n                    .createPolicy('angular#unsafe-bypass', {\n                    createHTML: (s) => s,\n                    createScript: (s) => s,\n                    createScriptURL: (s) => s,\n                });\n            }\n            catch {\n                // trustedTypes.createPolicy throws if called with a name that is\n                // already registered, even in report-only mode. Until the API changes,\n                // catch the error not to break the applications functionally. In such\n                // cases, the code will fall back to using strings.\n            }\n        }\n    }\n    return policy;\n}\n/**\n * Unsafely promote a string to a TrustedHTML, falling back to strings when\n * Trusted Types are not available.\n * @security This is a security-sensitive function; any use of this function\n * must go through security review. In particular, it must be assured that it\n * is only passed strings that come directly from custom sanitizers or the\n * bypassSecurityTrust* functions.\n */\nfunction trustedHTMLFromStringBypass(html) {\n    return getPolicy()?.createHTML(html) || html;\n}\n/**\n * Unsafely promote a string to a TrustedScript, falling back to strings when\n * Trusted Types are not available.\n * @security This is a security-sensitive function; any use of this function\n * must go through security review. In particular, it must be assured that it\n * is only passed strings that come directly from custom sanitizers or the\n * bypassSecurityTrust* functions.\n */\nfunction trustedScriptFromStringBypass(script) {\n    return getPolicy()?.createScript(script) || script;\n}\n/**\n * Unsafely promote a string to a TrustedScriptURL, falling back to strings\n * when Trusted Types are not available.\n * @security This is a security-sensitive function; any use of this function\n * must go through security review. In particular, it must be assured that it\n * is only passed strings that come directly from custom sanitizers or the\n * bypassSecurityTrust* functions.\n */\nfunction trustedScriptURLFromStringBypass(url) {\n    return getPolicy()?.createScriptURL(url) || url;\n}\n\nclass SafeValueImpl {\n    constructor(changingThisBreaksApplicationSecurity) {\n        this.changingThisBreaksApplicationSecurity = changingThisBreaksApplicationSecurity;\n    }\n    toString() {\n        return `SafeValue must use [property]=binding: ${this.changingThisBreaksApplicationSecurity}` +\n            ` (see ${XSS_SECURITY_URL})`;\n    }\n}\nclass SafeHtmlImpl extends SafeValueImpl {\n    getTypeName() {\n        return \"HTML\" /* BypassType.Html */;\n    }\n}\nclass SafeStyleImpl extends SafeValueImpl {\n    getTypeName() {\n        return \"Style\" /* BypassType.Style */;\n    }\n}\nclass SafeScriptImpl extends SafeValueImpl {\n    getTypeName() {\n        return \"Script\" /* BypassType.Script */;\n    }\n}\nclass SafeUrlImpl extends SafeValueImpl {\n    getTypeName() {\n        return \"URL\" /* BypassType.Url */;\n    }\n}\nclass SafeResourceUrlImpl extends SafeValueImpl {\n    getTypeName() {\n        return \"ResourceURL\" /* BypassType.ResourceUrl */;\n    }\n}\nfunction unwrapSafeValue(value) {\n    return value instanceof SafeValueImpl ? value.changingThisBreaksApplicationSecurity :\n        value;\n}\nfunction allowSanitizationBypassAndThrow(value, type) {\n    const actualType = getSanitizationBypassType(value);\n    if (actualType != null && actualType !== type) {\n        // Allow ResourceURLs in URL contexts, they are strictly more trusted.\n        if (actualType === \"ResourceURL\" /* BypassType.ResourceUrl */ && type === \"URL\" /* BypassType.Url */)\n            return true;\n        throw new Error(`Required a safe ${type}, got a ${actualType} (see ${XSS_SECURITY_URL})`);\n    }\n    return actualType === type;\n}\nfunction getSanitizationBypassType(value) {\n    return value instanceof SafeValueImpl && value.getTypeName() || null;\n}\n/**\n * Mark `html` string as trusted.\n *\n * This function wraps the trusted string in `String` and brands it in a way which makes it\n * recognizable to {@link htmlSanitizer} to be trusted implicitly.\n *\n * @param trustedHtml `html` string which needs to be implicitly trusted.\n * @returns a `html` which has been branded to be implicitly trusted.\n */\nfunction bypassSanitizationTrustHtml(trustedHtml) {\n    return new SafeHtmlImpl(trustedHtml);\n}\n/**\n * Mark `style` string as trusted.\n *\n * This function wraps the trusted string in `String` and brands it in a way which makes it\n * recognizable to {@link styleSanitizer} to be trusted implicitly.\n *\n * @param trustedStyle `style` string which needs to be implicitly trusted.\n * @returns a `style` hich has been branded to be implicitly trusted.\n */\nfunction bypassSanitizationTrustStyle(trustedStyle) {\n    return new SafeStyleImpl(trustedStyle);\n}\n/**\n * Mark `script` string as trusted.\n *\n * This function wraps the trusted string in `String` and brands it in a way which makes it\n * recognizable to {@link scriptSanitizer} to be trusted implicitly.\n *\n * @param trustedScript `script` string which needs to be implicitly trusted.\n * @returns a `script` which has been branded to be implicitly trusted.\n */\nfunction bypassSanitizationTrustScript(trustedScript) {\n    return new SafeScriptImpl(trustedScript);\n}\n/**\n * Mark `url` string as trusted.\n *\n * This function wraps the trusted string in `String` and brands it in a way which makes it\n * recognizable to {@link urlSanitizer} to be trusted implicitly.\n *\n * @param trustedUrl `url` string which needs to be implicitly trusted.\n * @returns a `url`  which has been branded to be implicitly trusted.\n */\nfunction bypassSanitizationTrustUrl(trustedUrl) {\n    return new SafeUrlImpl(trustedUrl);\n}\n/**\n * Mark `url` string as trusted.\n *\n * This function wraps the trusted string in `String` and brands it in a way which makes it\n * recognizable to {@link resourceUrlSanitizer} to be trusted implicitly.\n *\n * @param trustedResourceUrl `url` string which needs to be implicitly trusted.\n * @returns a `url` which has been branded to be implicitly trusted.\n */\nfunction bypassSanitizationTrustResourceUrl(trustedResourceUrl) {\n    return new SafeResourceUrlImpl(trustedResourceUrl);\n}\n\n/**\n * This helper is used to get hold of an inert tree of DOM elements containing dirty HTML\n * that needs sanitizing.\n * Depending upon browser support we use one of two strategies for doing this.\n * Default: DOMParser strategy\n * Fallback: InertDocument strategy\n */\nfunction getInertBodyHelper(defaultDoc) {\n    const inertDocumentHelper = new InertDocumentHelper(defaultDoc);\n    return isDOMParserAvailable() ? new DOMParserHelper(inertDocumentHelper) : inertDocumentHelper;\n}\n/**\n * Uses DOMParser to create and fill an inert body element.\n * This is the default strategy used in browsers that support it.\n */\nclass DOMParserHelper {\n    constructor(inertDocumentHelper) {\n        this.inertDocumentHelper = inertDocumentHelper;\n    }\n    getInertBodyElement(html) {\n        // We add these extra elements to ensure that the rest of the content is parsed as expected\n        // e.g. leading whitespace is maintained and tags like `<meta>` do not get hoisted to the\n        // `<head>` tag. Note that the `<body>` tag is closed implicitly to prevent unclosed tags\n        // in `html` from consuming the otherwise explicit `</body>` tag.\n        html = '<body><remove></remove>' + html;\n        try {\n            const body = new window.DOMParser()\n                .parseFromString(trustedHTMLFromString(html), 'text/html')\n                .body;\n            if (body === null) {\n                // In some browsers (e.g. Mozilla/5.0 iPad AppleWebKit Mobile) the `body` property only\n                // becomes available in the following tick of the JS engine. In that case we fall back to\n                // the `inertDocumentHelper` instead.\n                return this.inertDocumentHelper.getInertBodyElement(html);\n            }\n            body.removeChild(body.firstChild);\n            return body;\n        }\n        catch {\n            return null;\n        }\n    }\n}\n/**\n * Use an HTML5 `template` element to create and fill an inert DOM element.\n * This is the fallback strategy if the browser does not support DOMParser.\n */\nclass InertDocumentHelper {\n    constructor(defaultDoc) {\n        this.defaultDoc = defaultDoc;\n        this.inertDocument = this.defaultDoc.implementation.createHTMLDocument('sanitization-inert');\n    }\n    getInertBodyElement(html) {\n        const templateEl = this.inertDocument.createElement('template');\n        templateEl.innerHTML = trustedHTMLFromString(html);\n        return templateEl;\n    }\n}\n/**\n * We need to determine whether the DOMParser exists in the global context and\n * supports parsing HTML; HTML parsing support is not as wide as other formats, see\n * https://developer.mozilla.org/en-US/docs/Web/API/DOMParser#Browser_compatibility.\n *\n * @suppress {uselessCode}\n */\nfunction isDOMParserAvailable() {\n    try {\n        return !!new window.DOMParser().parseFromString(trustedHTMLFromString(''), 'text/html');\n    }\n    catch {\n        return false;\n    }\n}\n\n/**\n * A pattern that recognizes URLs that are safe wrt. XSS in URL navigation\n * contexts.\n *\n * This regular expression matches a subset of URLs that will not cause script\n * execution if used in URL context within a HTML document. Specifically, this\n * regular expression matches if:\n * (1) Either a protocol that is not javascript:, and that has valid characters\n *     (alphanumeric or [+-.]).\n * (2) or no protocol.  A protocol must be followed by a colon. The below\n *     allows that by allowing colons only after one of the characters [/?#].\n *     A colon after a hash (#) must be in the fragment.\n *     Otherwise, a colon after a (?) must be in a query.\n *     Otherwise, a colon after a single solidus (/) must be in a path.\n *     Otherwise, a colon after a double solidus (//) must be in the authority\n *     (before port).\n *\n * The pattern disallows &, used in HTML entity declarations before\n * one of the characters in [/?#]. This disallows HTML entities used in the\n * protocol name, which should never happen, e.g. \"h&#116;tp\" for \"http\".\n * It also disallows HTML entities in the first path part of a relative path,\n * e.g. \"foo&lt;bar/baz\".  Our existing escaping functions should not produce\n * that. More importantly, it disallows masking of a colon,\n * e.g. \"javascript&#58;...\".\n *\n * This regular expression was taken from the Closure sanitization library.\n */\nconst SAFE_URL_PATTERN = /^(?!javascript:)(?:[a-z0-9+.-]+:|[^&:\\/?#]*(?:[\\/?#]|$))/i;\nfunction _sanitizeUrl(url) {\n    url = String(url);\n    if (url.match(SAFE_URL_PATTERN))\n        return url;\n    if (typeof ngDevMode === 'undefined' || ngDevMode) {\n        console.warn(`WARNING: sanitizing unsafe URL value ${url} (see ${XSS_SECURITY_URL})`);\n    }\n    return 'unsafe:' + url;\n}\n\nfunction tagSet(tags) {\n    const res = {};\n    for (const t of tags.split(','))\n        res[t] = true;\n    return res;\n}\nfunction merge(...sets) {\n    const res = {};\n    for (const s of sets) {\n        for (const v in s) {\n            if (s.hasOwnProperty(v))\n                res[v] = true;\n        }\n    }\n    return res;\n}\n// Good source of info about elements and attributes\n// https://html.spec.whatwg.org/#semantics\n// https://simon.html5.org/html-elements\n// Safe Void Elements - HTML5\n// https://html.spec.whatwg.org/#void-elements\nconst VOID_ELEMENTS = tagSet('area,br,col,hr,img,wbr');\n// Elements that you can, intentionally, leave open (and which close themselves)\n// https://html.spec.whatwg.org/#optional-tags\nconst OPTIONAL_END_TAG_BLOCK_ELEMENTS = tagSet('colgroup,dd,dt,li,p,tbody,td,tfoot,th,thead,tr');\nconst OPTIONAL_END_TAG_INLINE_ELEMENTS = tagSet('rp,rt');\nconst OPTIONAL_END_TAG_ELEMENTS = merge(OPTIONAL_END_TAG_INLINE_ELEMENTS, OPTIONAL_END_TAG_BLOCK_ELEMENTS);\n// Safe Block Elements - HTML5\nconst BLOCK_ELEMENTS = merge(OPTIONAL_END_TAG_BLOCK_ELEMENTS, tagSet('address,article,' +\n    'aside,blockquote,caption,center,del,details,dialog,dir,div,dl,figure,figcaption,footer,h1,h2,h3,h4,h5,' +\n    'h6,header,hgroup,hr,ins,main,map,menu,nav,ol,pre,section,summary,table,ul'));\n// Inline Elements - HTML5\nconst INLINE_ELEMENTS = merge(OPTIONAL_END_TAG_INLINE_ELEMENTS, tagSet('a,abbr,acronym,audio,b,' +\n    'bdi,bdo,big,br,cite,code,del,dfn,em,font,i,img,ins,kbd,label,map,mark,picture,q,ruby,rp,rt,s,' +\n    'samp,small,source,span,strike,strong,sub,sup,time,track,tt,u,var,video'));\nconst VALID_ELEMENTS = merge(VOID_ELEMENTS, BLOCK_ELEMENTS, INLINE_ELEMENTS, OPTIONAL_END_TAG_ELEMENTS);\n// Attributes that have href and hence need to be sanitized\nconst URI_ATTRS = tagSet('background,cite,href,itemtype,longdesc,poster,src,xlink:href');\nconst HTML_ATTRS = tagSet('abbr,accesskey,align,alt,autoplay,axis,bgcolor,border,cellpadding,cellspacing,class,clear,color,cols,colspan,' +\n    'compact,controls,coords,datetime,default,dir,download,face,headers,height,hidden,hreflang,hspace,' +\n    'ismap,itemscope,itemprop,kind,label,lang,language,loop,media,muted,nohref,nowrap,open,preload,rel,rev,role,rows,rowspan,rules,' +\n    'scope,scrolling,shape,size,sizes,span,srclang,srcset,start,summary,tabindex,target,title,translate,type,usemap,' +\n    'valign,value,vspace,width');\n// Accessibility attributes as per WAI-ARIA 1.1 (W3C Working Draft 14 December 2018)\nconst ARIA_ATTRS = tagSet('aria-activedescendant,aria-atomic,aria-autocomplete,aria-busy,aria-checked,aria-colcount,aria-colindex,' +\n    'aria-colspan,aria-controls,aria-current,aria-describedby,aria-details,aria-disabled,aria-dropeffect,' +\n    'aria-errormessage,aria-expanded,aria-flowto,aria-grabbed,aria-haspopup,aria-hidden,aria-invalid,' +\n    'aria-keyshortcuts,aria-label,aria-labelledby,aria-level,aria-live,aria-modal,aria-multiline,' +\n    'aria-multiselectable,aria-orientation,aria-owns,aria-placeholder,aria-posinset,aria-pressed,aria-readonly,' +\n    'aria-relevant,aria-required,aria-roledescription,aria-rowcount,aria-rowindex,aria-rowspan,aria-selected,' +\n    'aria-setsize,aria-sort,aria-valuemax,aria-valuemin,aria-valuenow,aria-valuetext');\n// NB: This currently consciously doesn't support SVG. SVG sanitization has had several security\n// issues in the past, so it seems safer to leave it out if possible. If support for binding SVG via\n// innerHTML is required, SVG attributes should be added here.\n// NB: Sanitization does not allow <form> elements or other active elements (<button> etc). Those\n// can be sanitized, but they increase security surface area without a legitimate use case, so they\n// are left out here.\nconst VALID_ATTRS = merge(URI_ATTRS, HTML_ATTRS, ARIA_ATTRS);\n// Elements whose content should not be traversed/preserved, if the elements themselves are invalid.\n//\n// Typically, `<invalid>Some content</invalid>` would traverse (and in this case preserve)\n// `Some content`, but strip `invalid-element` opening/closing tags. For some elements, though, we\n// don't want to preserve the content, if the elements themselves are going to be removed.\nconst SKIP_TRAVERSING_CONTENT_IF_INVALID_ELEMENTS = tagSet('script,style,template');\n/**\n * SanitizingHtmlSerializer serializes a DOM fragment, stripping out any unsafe elements and unsafe\n * attributes.\n */\nclass SanitizingHtmlSerializer {\n    constructor() {\n        // Explicitly track if something was stripped, to avoid accidentally warning of sanitization just\n        // because characters were re-encoded.\n        this.sanitizedSomething = false;\n        this.buf = [];\n    }\n    sanitizeChildren(el) {\n        // This cannot use a TreeWalker, as it has to run on Angular's various DOM adapters.\n        // However this code never accesses properties off of `document` before deleting its contents\n        // again, so it shouldn't be vulnerable to DOM clobbering.\n        let current = el.firstChild;\n        let traverseContent = true;\n        while (current) {\n            if (current.nodeType === Node.ELEMENT_NODE) {\n                traverseContent = this.startElement(current);\n            }\n            else if (current.nodeType === Node.TEXT_NODE) {\n                this.chars(current.nodeValue);\n            }\n            else {\n                // Strip non-element, non-text nodes.\n                this.sanitizedSomething = true;\n            }\n            if (traverseContent && current.firstChild) {\n                current = current.firstChild;\n                continue;\n            }\n            while (current) {\n                // Leaving the element. Walk up and to the right, closing tags as we go.\n                if (current.nodeType === Node.ELEMENT_NODE) {\n                    this.endElement(current);\n                }\n                let next = this.checkClobberedElement(current, current.nextSibling);\n                if (next) {\n                    current = next;\n                    break;\n                }\n                current = this.checkClobberedElement(current, current.parentNode);\n            }\n        }\n        return this.buf.join('');\n    }\n    /**\n     * Sanitizes an opening element tag (if valid) and returns whether the element's contents should\n     * be traversed. Element content must always be traversed (even if the element itself is not\n     * valid/safe), unless the element is one of `SKIP_TRAVERSING_CONTENT_IF_INVALID_ELEMENTS`.\n     *\n     * @param element The element to sanitize.\n     * @return True if the element's contents should be traversed.\n     */\n    startElement(element) {\n        const tagName = element.nodeName.toLowerCase();\n        if (!VALID_ELEMENTS.hasOwnProperty(tagName)) {\n            this.sanitizedSomething = true;\n            return !SKIP_TRAVERSING_CONTENT_IF_INVALID_ELEMENTS.hasOwnProperty(tagName);\n        }\n        this.buf.push('<');\n        this.buf.push(tagName);\n        const elAttrs = element.attributes;\n        for (let i = 0; i < elAttrs.length; i++) {\n            const elAttr = elAttrs.item(i);\n            const attrName = elAttr.name;\n            const lower = attrName.toLowerCase();\n            if (!VALID_ATTRS.hasOwnProperty(lower)) {\n                this.sanitizedSomething = true;\n                continue;\n            }\n            let value = elAttr.value;\n            // TODO(martinprobst): Special case image URIs for data:image/...\n            if (URI_ATTRS[lower])\n                value = _sanitizeUrl(value);\n            this.buf.push(' ', attrName, '=\"', encodeEntities(value), '\"');\n        }\n        this.buf.push('>');\n        return true;\n    }\n    endElement(current) {\n        const tagName = current.nodeName.toLowerCase();\n        if (VALID_ELEMENTS.hasOwnProperty(tagName) && !VOID_ELEMENTS.hasOwnProperty(tagName)) {\n            this.buf.push('</');\n            this.buf.push(tagName);\n            this.buf.push('>');\n        }\n    }\n    chars(chars) {\n        this.buf.push(encodeEntities(chars));\n    }\n    checkClobberedElement(node, nextNode) {\n        if (nextNode &&\n            (node.compareDocumentPosition(nextNode) &\n                Node.DOCUMENT_POSITION_CONTAINED_BY) === Node.DOCUMENT_POSITION_CONTAINED_BY) {\n            throw new Error(`Failed to sanitize html because the element is clobbered: ${node.outerHTML}`);\n        }\n        return nextNode;\n    }\n}\n// Regular Expressions for parsing tags and attributes\nconst SURROGATE_PAIR_REGEXP = /[\\uD800-\\uDBFF][\\uDC00-\\uDFFF]/g;\n// ! to ~ is the ASCII range.\nconst NON_ALPHANUMERIC_REGEXP = /([^\\#-~ |!])/g;\n/**\n * Escapes all potentially dangerous characters, so that the\n * resulting string can be safely inserted into attribute or\n * element text.\n * @param value\n */\nfunction encodeEntities(value) {\n    return value.replace(/&/g, '&amp;')\n        .replace(SURROGATE_PAIR_REGEXP, function (match) {\n        const hi = match.charCodeAt(0);\n        const low = match.charCodeAt(1);\n        return '&#' + (((hi - 0xD800) * 0x400) + (low - 0xDC00) + 0x10000) + ';';\n    })\n        .replace(NON_ALPHANUMERIC_REGEXP, function (match) {\n        return '&#' + match.charCodeAt(0) + ';';\n    })\n        .replace(/</g, '&lt;')\n        .replace(/>/g, '&gt;');\n}\nlet inertBodyHelper;\n/**\n * Sanitizes the given unsafe, untrusted HTML fragment, and returns HTML text that is safe to add to\n * the DOM in a browser environment.\n */\nfunction _sanitizeHtml(defaultDoc, unsafeHtmlInput) {\n    let inertBodyElement = null;\n    try {\n        inertBodyHelper = inertBodyHelper || getInertBodyHelper(defaultDoc);\n        // Make sure unsafeHtml is actually a string (TypeScript types are not enforced at runtime).\n        let unsafeHtml = unsafeHtmlInput ? String(unsafeHtmlInput) : '';\n        inertBodyElement = inertBodyHelper.getInertBodyElement(unsafeHtml);\n        // mXSS protection. Repeatedly parse the document to make sure it stabilizes, so that a browser\n        // trying to auto-correct incorrect HTML cannot cause formerly inert HTML to become dangerous.\n        let mXSSAttempts = 5;\n        let parsedHtml = unsafeHtml;\n        do {\n            if (mXSSAttempts === 0) {\n                throw new Error('Failed to sanitize html because the input is unstable');\n            }\n            mXSSAttempts--;\n            unsafeHtml = parsedHtml;\n            parsedHtml = inertBodyElement.innerHTML;\n            inertBodyElement = inertBodyHelper.getInertBodyElement(unsafeHtml);\n        } while (unsafeHtml !== parsedHtml);\n        const sanitizer = new SanitizingHtmlSerializer();\n        const safeHtml = sanitizer.sanitizeChildren(getTemplateContent(inertBodyElement) || inertBodyElement);\n        if ((typeof ngDevMode === 'undefined' || ngDevMode) && sanitizer.sanitizedSomething) {\n            console.warn(`WARNING: sanitizing HTML stripped some content, see ${XSS_SECURITY_URL}`);\n        }\n        return trustedHTMLFromString(safeHtml);\n    }\n    finally {\n        // In case anything goes wrong, clear out inertElement to reset the entire DOM structure.\n        if (inertBodyElement) {\n            const parent = getTemplateContent(inertBodyElement) || inertBodyElement;\n            while (parent.firstChild) {\n                parent.removeChild(parent.firstChild);\n            }\n        }\n    }\n}\nfunction getTemplateContent(el) {\n    return 'content' in el /** Microsoft/TypeScript#21517 */ && isTemplateElement(el) ?\n        el.content :\n        null;\n}\nfunction isTemplateElement(el) {\n    return el.nodeType === Node.ELEMENT_NODE && el.nodeName === 'TEMPLATE';\n}\n\n/**\n * A SecurityContext marks a location that has dangerous security implications, e.g. a DOM property\n * like `innerHTML` that could cause Cross Site Scripting (XSS) security bugs when improperly\n * handled.\n *\n * See DomSanitizer for more details on security in Angular applications.\n *\n * @publicApi\n */\nvar SecurityContext;\n(function (SecurityContext) {\n    SecurityContext[SecurityContext[\"NONE\"] = 0] = \"NONE\";\n    SecurityContext[SecurityContext[\"HTML\"] = 1] = \"HTML\";\n    SecurityContext[SecurityContext[\"STYLE\"] = 2] = \"STYLE\";\n    SecurityContext[SecurityContext[\"SCRIPT\"] = 3] = \"SCRIPT\";\n    SecurityContext[SecurityContext[\"URL\"] = 4] = \"URL\";\n    SecurityContext[SecurityContext[\"RESOURCE_URL\"] = 5] = \"RESOURCE_URL\";\n})(SecurityContext || (SecurityContext = {}));\n\n/**\n * An `html` sanitizer which converts untrusted `html` **string** into trusted string by removing\n * dangerous content.\n *\n * This method parses the `html` and locates potentially dangerous content (such as urls and\n * javascript) and removes it.\n *\n * It is possible to mark a string as trusted by calling {@link bypassSanitizationTrustHtml}.\n *\n * @param unsafeHtml untrusted `html`, typically from the user.\n * @returns `html` string which is safe to display to user, because all of the dangerous javascript\n * and urls have been removed.\n *\n * @codeGenApi\n */\nfunction ɵɵsanitizeHtml(unsafeHtml) {\n    const sanitizer = getSanitizer();\n    if (sanitizer) {\n        return trustedHTMLFromStringBypass(sanitizer.sanitize(SecurityContext.HTML, unsafeHtml) || '');\n    }\n    if (allowSanitizationBypassAndThrow(unsafeHtml, \"HTML\" /* BypassType.Html */)) {\n        return trustedHTMLFromStringBypass(unwrapSafeValue(unsafeHtml));\n    }\n    return _sanitizeHtml(getDocument(), renderStringify(unsafeHtml));\n}\n/**\n * A `style` sanitizer which converts untrusted `style` **string** into trusted string by removing\n * dangerous content.\n *\n * It is possible to mark a string as trusted by calling {@link bypassSanitizationTrustStyle}.\n *\n * @param unsafeStyle untrusted `style`, typically from the user.\n * @returns `style` string which is safe to bind to the `style` properties.\n *\n * @codeGenApi\n */\nfunction ɵɵsanitizeStyle(unsafeStyle) {\n    const sanitizer = getSanitizer();\n    if (sanitizer) {\n        return sanitizer.sanitize(SecurityContext.STYLE, unsafeStyle) || '';\n    }\n    if (allowSanitizationBypassAndThrow(unsafeStyle, \"Style\" /* BypassType.Style */)) {\n        return unwrapSafeValue(unsafeStyle);\n    }\n    return renderStringify(unsafeStyle);\n}\n/**\n * A `url` sanitizer which converts untrusted `url` **string** into trusted string by removing\n * dangerous\n * content.\n *\n * This method parses the `url` and locates potentially dangerous content (such as javascript) and\n * removes it.\n *\n * It is possible to mark a string as trusted by calling {@link bypassSanitizationTrustUrl}.\n *\n * @param unsafeUrl untrusted `url`, typically from the user.\n * @returns `url` string which is safe to bind to the `src` properties such as `<img src>`, because\n * all of the dangerous javascript has been removed.\n *\n * @codeGenApi\n */\nfunction ɵɵsanitizeUrl(unsafeUrl) {\n    const sanitizer = getSanitizer();\n    if (sanitizer) {\n        return sanitizer.sanitize(SecurityContext.URL, unsafeUrl) || '';\n    }\n    if (allowSanitizationBypassAndThrow(unsafeUrl, \"URL\" /* BypassType.Url */)) {\n        return unwrapSafeValue(unsafeUrl);\n    }\n    return _sanitizeUrl(renderStringify(unsafeUrl));\n}\n/**\n * A `url` sanitizer which only lets trusted `url`s through.\n *\n * This passes only `url`s marked trusted by calling {@link bypassSanitizationTrustResourceUrl}.\n *\n * @param unsafeResourceUrl untrusted `url`, typically from the user.\n * @returns `url` string which is safe to bind to the `src` properties such as `<img src>`, because\n * only trusted `url`s have been allowed to pass.\n *\n * @codeGenApi\n */\nfunction ɵɵsanitizeResourceUrl(unsafeResourceUrl) {\n    const sanitizer = getSanitizer();\n    if (sanitizer) {\n        return trustedScriptURLFromStringBypass(sanitizer.sanitize(SecurityContext.RESOURCE_URL, unsafeResourceUrl) || '');\n    }\n    if (allowSanitizationBypassAndThrow(unsafeResourceUrl, \"ResourceURL\" /* BypassType.ResourceUrl */)) {\n        return trustedScriptURLFromStringBypass(unwrapSafeValue(unsafeResourceUrl));\n    }\n    throw new RuntimeError(904 /* RuntimeErrorCode.UNSAFE_VALUE_IN_RESOURCE_URL */, ngDevMode && `unsafe value used in a resource URL context (see ${XSS_SECURITY_URL})`);\n}\n/**\n * A `script` sanitizer which only lets trusted javascript through.\n *\n * This passes only `script`s marked trusted by calling {@link\n * bypassSanitizationTrustScript}.\n *\n * @param unsafeScript untrusted `script`, typically from the user.\n * @returns `url` string which is safe to bind to the `<script>` element such as `<img src>`,\n * because only trusted `scripts` have been allowed to pass.\n *\n * @codeGenApi\n */\nfunction ɵɵsanitizeScript(unsafeScript) {\n    const sanitizer = getSanitizer();\n    if (sanitizer) {\n        return trustedScriptFromStringBypass(sanitizer.sanitize(SecurityContext.SCRIPT, unsafeScript) || '');\n    }\n    if (allowSanitizationBypassAndThrow(unsafeScript, \"Script\" /* BypassType.Script */)) {\n        return trustedScriptFromStringBypass(unwrapSafeValue(unsafeScript));\n    }\n    throw new RuntimeError(905 /* RuntimeErrorCode.UNSAFE_VALUE_IN_SCRIPT */, ngDevMode && 'unsafe value used in a script context');\n}\n/**\n * A template tag function for promoting the associated constant literal to a\n * TrustedHTML. Interpolation is explicitly not allowed.\n *\n * @param html constant template literal containing trusted HTML.\n * @returns TrustedHTML wrapping `html`.\n *\n * @security This is a security-sensitive function and should only be used to\n * convert constant values of attributes and properties found in\n * application-provided Angular templates to TrustedHTML.\n *\n * @codeGenApi\n */\nfunction ɵɵtrustConstantHtml(html) {\n    // The following runtime check ensures that the function was called as a\n    // template tag (e.g. ɵɵtrustConstantHtml`content`), without any interpolation\n    // (e.g. not ɵɵtrustConstantHtml`content ${variable}`). A TemplateStringsArray\n    // is an array with a `raw` property that is also an array. The associated\n    // template literal has no interpolation if and only if the length of the\n    // TemplateStringsArray is 1.\n    if (ngDevMode && (!Array.isArray(html) || !Array.isArray(html.raw) || html.length !== 1)) {\n        throw new Error(`Unexpected interpolation in trusted HTML constant: ${html.join('?')}`);\n    }\n    return trustedHTMLFromString(html[0]);\n}\n/**\n * A template tag function for promoting the associated constant literal to a\n * TrustedScriptURL. Interpolation is explicitly not allowed.\n *\n * @param url constant template literal containing a trusted script URL.\n * @returns TrustedScriptURL wrapping `url`.\n *\n * @security This is a security-sensitive function and should only be used to\n * convert constant values of attributes and properties found in\n * application-provided Angular templates to TrustedScriptURL.\n *\n * @codeGenApi\n */\nfunction ɵɵtrustConstantResourceUrl(url) {\n    // The following runtime check ensures that the function was called as a\n    // template tag (e.g. ɵɵtrustConstantResourceUrl`content`), without any\n    // interpolation (e.g. not ɵɵtrustConstantResourceUrl`content ${variable}`). A\n    // TemplateStringsArray is an array with a `raw` property that is also an\n    // array. The associated template literal has no interpolation if and only if\n    // the length of the TemplateStringsArray is 1.\n    if (ngDevMode && (!Array.isArray(url) || !Array.isArray(url.raw) || url.length !== 1)) {\n        throw new Error(`Unexpected interpolation in trusted URL constant: ${url.join('?')}`);\n    }\n    return trustedScriptURLFromString(url[0]);\n}\n/**\n * Detects which sanitizer to use for URL property, based on tag name and prop name.\n *\n * The rules are based on the RESOURCE_URL context config from\n * `packages/compiler/src/schema/dom_security_schema.ts`.\n * If tag and prop names don't match Resource URL schema, use URL sanitizer.\n */\nfunction getUrlSanitizer(tag, prop) {\n    if ((prop === 'src' &&\n        (tag === 'embed' || tag === 'frame' || tag === 'iframe' || tag === 'media' ||\n            tag === 'script')) ||\n        (prop === 'href' && (tag === 'base' || tag === 'link'))) {\n        return ɵɵsanitizeResourceUrl;\n    }\n    return ɵɵsanitizeUrl;\n}\n/**\n * Sanitizes URL, selecting sanitizer function based on tag and property names.\n *\n * This function is used in case we can't define security context at compile time, when only prop\n * name is available. This happens when we generate host bindings for Directives/Components. The\n * host element is unknown at compile time, so we defer calculation of specific sanitizer to\n * runtime.\n *\n * @param unsafeUrl untrusted `url`, typically from the user.\n * @param tag target element tag name.\n * @param prop name of the property that contains the value.\n * @returns `url` string which is safe to bind.\n *\n * @codeGenApi\n */\nfunction ɵɵsanitizeUrlOrResourceUrl(unsafeUrl, tag, prop) {\n    return getUrlSanitizer(tag, prop)(unsafeUrl);\n}\nfunction validateAgainstEventProperties(name) {\n    if (name.toLowerCase().startsWith('on')) {\n        const errorMessage = `Binding to event property '${name}' is disallowed for security reasons, ` +\n            `please use (${name.slice(2)})=...` +\n            `\\nIf '${name}' is a directive input, make sure the directive is imported by the` +\n            ` current module.`;\n        throw new RuntimeError(306 /* RuntimeErrorCode.INVALID_EVENT_BINDING */, errorMessage);\n    }\n}\nfunction validateAgainstEventAttributes(name) {\n    if (name.toLowerCase().startsWith('on')) {\n        const errorMessage = `Binding to event attribute '${name}' is disallowed for security reasons, ` +\n            `please use (${name.slice(2)})=...`;\n        throw new RuntimeError(306 /* RuntimeErrorCode.INVALID_EVENT_BINDING */, errorMessage);\n    }\n}\nfunction getSanitizer() {\n    const lView = getLView();\n    return lView && lView[SANITIZER];\n}\n\n/**\n * A multi-provider token for initialization functions that will run upon construction of an\n * environment injector.\n *\n * @publicApi\n */\nconst ENVIRONMENT_INITIALIZER = new InjectionToken('ENVIRONMENT_INITIALIZER');\n\n/**\n * An InjectionToken that gets the current `Injector` for `createInjector()`-style injectors.\n *\n * Requesting this token instead of `Injector` allows `StaticInjector` to be tree-shaken from a\n * project.\n *\n * @publicApi\n */\nconst INJECTOR = new InjectionToken('INJECTOR', \n// Disable tslint because this is const enum which gets inlined not top level prop access.\n// tslint:disable-next-line: no-toplevel-property-access\n-1 /* InjectorMarkers.Injector */);\n\nconst INJECTOR_DEF_TYPES = new InjectionToken('INJECTOR_DEF_TYPES');\n\nclass NullInjector {\n    get(token, notFoundValue = THROW_IF_NOT_FOUND) {\n        if (notFoundValue === THROW_IF_NOT_FOUND) {\n            const error = new Error(`NullInjectorError: No provider for ${stringify(token)}!`);\n            error.name = 'NullInjectorError';\n            throw error;\n        }\n        return notFoundValue;\n    }\n}\n\n/**\n * Wrap an array of `Provider`s into `EnvironmentProviders`, preventing them from being accidentally\n * referenced in `@Component in a component injector.\n */\nfunction makeEnvironmentProviders(providers) {\n    return {\n        ɵproviders: providers,\n    };\n}\n/**\n * Collects providers from all NgModules and standalone components, including transitively imported\n * ones.\n *\n * Providers extracted via `importProvidersFrom` are only usable in an application injector or\n * another environment injector (such as a route injector). They should not be used in component\n * providers.\n *\n * More information about standalone components can be found in [this\n * guide](guide/standalone-components).\n *\n * @usageNotes\n * The results of the `importProvidersFrom` call can be used in the `bootstrapApplication` call:\n *\n * ```typescript\n * await bootstrapApplication(RootComponent, {\n *   providers: [\n *     importProvidersFrom(NgModuleOne, NgModuleTwo)\n *   ]\n * });\n * ```\n *\n * You can also use the `importProvidersFrom` results in the `providers` field of a route, when a\n * standalone component is used:\n *\n * ```typescript\n * export const ROUTES: Route[] = [\n *   {\n *     path: 'foo',\n *     providers: [\n *       importProvidersFrom(NgModuleOne, NgModuleTwo)\n *     ],\n *     component: YourStandaloneComponent\n *   }\n * ];\n * ```\n *\n * @returns Collected providers from the specified list of types.\n * @publicApi\n */\nfunction importProvidersFrom(...sources) {\n    return {\n        ɵproviders: internalImportProvidersFrom(true, sources),\n        ɵfromNgModule: true,\n    };\n}\nfunction internalImportProvidersFrom(checkForStandaloneCmp, ...sources) {\n    const providersOut = [];\n    const dedup = new Set(); // already seen types\n    let injectorTypesWithProviders;\n    deepForEach(sources, source => {\n        if ((typeof ngDevMode === 'undefined' || ngDevMode) && checkForStandaloneCmp) {\n            const cmpDef = getComponentDef(source);\n            if (cmpDef?.standalone) {\n                throw new RuntimeError(800 /* RuntimeErrorCode.IMPORT_PROVIDERS_FROM_STANDALONE */, `Importing providers supports NgModule or ModuleWithProviders but got a standalone component \"${stringifyForError(source)}\"`);\n            }\n        }\n        // Narrow `source` to access the internal type analogue for `ModuleWithProviders`.\n        const internalSource = source;\n        if (walkProviderTree(internalSource, providersOut, [], dedup)) {\n            injectorTypesWithProviders || (injectorTypesWithProviders = []);\n            injectorTypesWithProviders.push(internalSource);\n        }\n    });\n    // Collect all providers from `ModuleWithProviders` types.\n    if (injectorTypesWithProviders !== undefined) {\n        processInjectorTypesWithProviders(injectorTypesWithProviders, providersOut);\n    }\n    return providersOut;\n}\n/**\n * Collects all providers from the list of `ModuleWithProviders` and appends them to the provided\n * array.\n */\nfunction processInjectorTypesWithProviders(typesWithProviders, providersOut) {\n    for (let i = 0; i < typesWithProviders.length; i++) {\n        const { ngModule, providers } = typesWithProviders[i];\n        deepForEachProvider(providers, provider => {\n            ngDevMode && validateProvider(provider, providers || EMPTY_ARRAY, ngModule);\n            providersOut.push(provider);\n        });\n    }\n}\n/**\n * The logic visits an `InjectorType`, an `InjectorTypeWithProviders`, or a standalone\n * `ComponentType`, and all of its transitive providers and collects providers.\n *\n * If an `InjectorTypeWithProviders` that declares providers besides the type is specified,\n * the function will return \"true\" to indicate that the providers of the type definition need\n * to be processed. This allows us to process providers of injector types after all imports of\n * an injector definition are processed. (following View Engine semantics: see FW-1349)\n */\nfunction walkProviderTree(container, providersOut, parents, dedup) {\n    container = resolveForwardRef(container);\n    if (!container)\n        return false;\n    // The actual type which had the definition. Usually `container`, but may be an unwrapped type\n    // from `InjectorTypeWithProviders`.\n    let defType = null;\n    let injDef = getInjectorDef(container);\n    const cmpDef = !injDef && getComponentDef(container);\n    if (!injDef && !cmpDef) {\n        // `container` is not an injector type or a component type. It might be:\n        //  * An `InjectorTypeWithProviders` that wraps an injector type.\n        //  * A standalone directive or pipe that got pulled in from a standalone component's\n        //    dependencies.\n        // Try to unwrap it as an `InjectorTypeWithProviders` first.\n        const ngModule = container.ngModule;\n        injDef = getInjectorDef(ngModule);\n        if (injDef) {\n            defType = ngModule;\n        }\n        else {\n            // Not a component or injector type, so ignore it.\n            return false;\n        }\n    }\n    else if (cmpDef && !cmpDef.standalone) {\n        return false;\n    }\n    else {\n        defType = container;\n    }\n    // Check for circular dependencies.\n    if (ngDevMode && parents.indexOf(defType) !== -1) {\n        const defName = stringify(defType);\n        const path = parents.map(stringify);\n        throwCyclicDependencyError(defName, path);\n    }\n    // Check for multiple imports of the same module\n    const isDuplicate = dedup.has(defType);\n    if (cmpDef) {\n        if (isDuplicate) {\n            // This component definition has already been processed.\n            return false;\n        }\n        dedup.add(defType);\n        if (cmpDef.dependencies) {\n            const deps = typeof cmpDef.dependencies === 'function' ? cmpDef.dependencies() : cmpDef.dependencies;\n            for (const dep of deps) {\n                walkProviderTree(dep, providersOut, parents, dedup);\n            }\n        }\n    }\n    else if (injDef) {\n        // First, include providers from any imports.\n        if (injDef.imports != null && !isDuplicate) {\n            // Before processing defType's imports, add it to the set of parents. This way, if it ends\n            // up deeply importing itself, this can be detected.\n            ngDevMode && parents.push(defType);\n            // Add it to the set of dedups. This way we can detect multiple imports of the same module\n            dedup.add(defType);\n            let importTypesWithProviders;\n            try {\n                deepForEach(injDef.imports, imported => {\n                    if (walkProviderTree(imported, providersOut, parents, dedup)) {\n                        importTypesWithProviders || (importTypesWithProviders = []);\n                        // If the processed import is an injector type with providers, we store it in the\n                        // list of import types with providers, so that we can process those afterwards.\n                        importTypesWithProviders.push(imported);\n                    }\n                });\n            }\n            finally {\n                // Remove it from the parents set when finished.\n                ngDevMode && parents.pop();\n            }\n            // Imports which are declared with providers (TypeWithProviders) need to be processed\n            // after all imported modules are processed. This is similar to how View Engine\n            // processes/merges module imports in the metadata resolver. See: FW-1349.\n            if (importTypesWithProviders !== undefined) {\n                processInjectorTypesWithProviders(importTypesWithProviders, providersOut);\n            }\n        }\n        if (!isDuplicate) {\n            // Track the InjectorType and add a provider for it.\n            // It's important that this is done after the def's imports.\n            const factory = getFactoryDef(defType) || (() => new defType());\n            // Append extra providers to make more info available for consumers (to retrieve an injector\n            // type), as well as internally (to calculate an injection scope correctly and eagerly\n            // instantiate a `defType` when an injector is created).\n            providersOut.push(\n            // Provider to create `defType` using its factory.\n            { provide: defType, useFactory: factory, deps: EMPTY_ARRAY }, \n            // Make this `defType` available to an internal logic that calculates injector scope.\n            { provide: INJECTOR_DEF_TYPES, useValue: defType, multi: true }, \n            // Provider to eagerly instantiate `defType` via `ENVIRONMENT_INITIALIZER`.\n            { provide: ENVIRONMENT_INITIALIZER, useValue: () => ɵɵinject(defType), multi: true } //\n            );\n        }\n        // Next, include providers listed on the definition itself.\n        const defProviders = injDef.providers;\n        if (defProviders != null && !isDuplicate) {\n            const injectorType = container;\n            deepForEachProvider(defProviders, provider => {\n                ngDevMode && validateProvider(provider, defProviders, injectorType);\n                providersOut.push(provider);\n            });\n        }\n    }\n    else {\n        // Should not happen, but just in case.\n        return false;\n    }\n    return (defType !== container &&\n        container.providers !== undefined);\n}\nfunction validateProvider(provider, providers, containerType) {\n    if (isTypeProvider(provider) || isValueProvider(provider) || isFactoryProvider(provider) ||\n        isExistingProvider(provider)) {\n        return;\n    }\n    // Here we expect the provider to be a `useClass` provider (by elimination).\n    const classRef = resolveForwardRef(provider && (provider.useClass || provider.provide));\n    if (!classRef) {\n        throwInvalidProviderError(containerType, providers, provider);\n    }\n}\nfunction deepForEachProvider(providers, fn) {\n    for (let provider of providers) {\n        if (isEnvironmentProviders(provider)) {\n            provider = provider.ɵproviders;\n        }\n        if (Array.isArray(provider)) {\n            deepForEachProvider(provider, fn);\n        }\n        else {\n            fn(provider);\n        }\n    }\n}\nconst USE_VALUE$1 = getClosureSafeProperty({ provide: String, useValue: getClosureSafeProperty });\nfunction isValueProvider(value) {\n    return value !== null && typeof value == 'object' && USE_VALUE$1 in value;\n}\nfunction isExistingProvider(value) {\n    return !!(value && value.useExisting);\n}\nfunction isFactoryProvider(value) {\n    return !!(value && value.useFactory);\n}\nfunction isTypeProvider(value) {\n    return typeof value === 'function';\n}\nfunction isClassProvider(value) {\n    return !!value.useClass;\n}\n\n/**\n * An internal token whose presence in an injector indicates that the injector should treat itself\n * as a root scoped injector when processing requests for unknown tokens which may indicate\n * they are provided in the root scope.\n */\nconst INJECTOR_SCOPE = new InjectionToken('Set Injector scope.');\n\n/**\n * Marker which indicates that a value has not yet been created from the factory function.\n */\nconst NOT_YET = {};\n/**\n * Marker which indicates that the factory function for a token is in the process of being called.\n *\n * If the injector is asked to inject a token with its value set to CIRCULAR, that indicates\n * injection of a dependency has recursively attempted to inject the original token, and there is\n * a circular dependency among the providers.\n */\nconst CIRCULAR = {};\n/**\n * A lazily initialized NullInjector.\n */\nlet NULL_INJECTOR$1 = undefined;\nfunction getNullInjector() {\n    if (NULL_INJECTOR$1 === undefined) {\n        NULL_INJECTOR$1 = new NullInjector();\n    }\n    return NULL_INJECTOR$1;\n}\n/**\n * An `Injector` that's part of the environment injector hierarchy, which exists outside of the\n * component tree.\n */\nclass EnvironmentInjector {\n}\nclass R3Injector extends EnvironmentInjector {\n    /**\n     * Flag indicating that this injector was previously destroyed.\n     */\n    get destroyed() {\n        return this._destroyed;\n    }\n    constructor(providers, parent, source, scopes) {\n        super();\n        this.parent = parent;\n        this.source = source;\n        this.scopes = scopes;\n        /**\n         * Map of tokens to records which contain the instances of those tokens.\n         * - `null` value implies that we don't have the record. Used by tree-shakable injectors\n         * to prevent further searches.\n         */\n        this.records = new Map();\n        /**\n         * Set of values instantiated by this injector which contain `ngOnDestroy` lifecycle hooks.\n         */\n        this._ngOnDestroyHooks = new Set();\n        this._onDestroyHooks = [];\n        this._destroyed = false;\n        // Start off by creating Records for every provider.\n        forEachSingleProvider(providers, provider => this.processProvider(provider));\n        // Make sure the INJECTOR token provides this injector.\n        this.records.set(INJECTOR, makeRecord(undefined, this));\n        // And `EnvironmentInjector` if the current injector is supposed to be env-scoped.\n        if (scopes.has('environment')) {\n            this.records.set(EnvironmentInjector, makeRecord(undefined, this));\n        }\n        // Detect whether this injector has the APP_ROOT_SCOPE token and thus should provide\n        // any injectable scoped to APP_ROOT_SCOPE.\n        const record = this.records.get(INJECTOR_SCOPE);\n        if (record != null && typeof record.value === 'string') {\n            this.scopes.add(record.value);\n        }\n        this.injectorDefTypes =\n            new Set(this.get(INJECTOR_DEF_TYPES.multi, EMPTY_ARRAY, InjectFlags.Self));\n    }\n    /**\n     * Destroy the injector and release references to every instance or provider associated with it.\n     *\n     * Also calls the `OnDestroy` lifecycle hooks of every instance that was created for which a\n     * hook was found.\n     */\n    destroy() {\n        this.assertNotDestroyed();\n        // Set destroyed = true first, in case lifecycle hooks re-enter destroy().\n        this._destroyed = true;\n        try {\n            // Call all the lifecycle hooks.\n            for (const service of this._ngOnDestroyHooks) {\n                service.ngOnDestroy();\n            }\n            for (const hook of this._onDestroyHooks) {\n                hook();\n            }\n        }\n        finally {\n            // Release all references.\n            this.records.clear();\n            this._ngOnDestroyHooks.clear();\n            this.injectorDefTypes.clear();\n            this._onDestroyHooks.length = 0;\n        }\n    }\n    onDestroy(callback) {\n        this._onDestroyHooks.push(callback);\n    }\n    runInContext(fn) {\n        this.assertNotDestroyed();\n        const previousInjector = setCurrentInjector(this);\n        const previousInjectImplementation = setInjectImplementation(undefined);\n        try {\n            return fn();\n        }\n        finally {\n            setCurrentInjector(previousInjector);\n            setInjectImplementation(previousInjectImplementation);\n        }\n    }\n    get(token, notFoundValue = THROW_IF_NOT_FOUND, flags = InjectFlags.Default) {\n        this.assertNotDestroyed();\n        flags = convertToBitFlags(flags);\n        // Set the injection context.\n        const previousInjector = setCurrentInjector(this);\n        const previousInjectImplementation = setInjectImplementation(undefined);\n        try {\n            // Check for the SkipSelf flag.\n            if (!(flags & InjectFlags.SkipSelf)) {\n                // SkipSelf isn't set, check if the record belongs to this injector.\n                let record = this.records.get(token);\n                if (record === undefined) {\n                    // No record, but maybe the token is scoped to this injector. Look for an injectable\n                    // def with a scope matching this injector.\n                    const def = couldBeInjectableType(token) && getInjectableDef(token);\n                    if (def && this.injectableDefInScope(def)) {\n                        // Found an injectable def and it's scoped to this injector. Pretend as if it was here\n                        // all along.\n                        record = makeRecord(injectableDefOrInjectorDefFactory(token), NOT_YET);\n                    }\n                    else {\n                        record = null;\n                    }\n                    this.records.set(token, record);\n                }\n                // If a record was found, get the instance for it and return it.\n                if (record != null /* NOT null || undefined */) {\n                    return this.hydrate(token, record);\n                }\n            }\n            // Select the next injector based on the Self flag - if self is set, the next injector is\n            // the NullInjector, otherwise it's the parent.\n            const nextInjector = !(flags & InjectFlags.Self) ? this.parent : getNullInjector();\n            // Set the notFoundValue based on the Optional flag - if optional is set and notFoundValue\n            // is undefined, the value is null, otherwise it's the notFoundValue.\n            notFoundValue = (flags & InjectFlags.Optional) && notFoundValue === THROW_IF_NOT_FOUND ?\n                null :\n                notFoundValue;\n            return nextInjector.get(token, notFoundValue);\n        }\n        catch (e) {\n            if (e.name === 'NullInjectorError') {\n                const path = e[NG_TEMP_TOKEN_PATH] = e[NG_TEMP_TOKEN_PATH] || [];\n                path.unshift(stringify(token));\n                if (previousInjector) {\n                    // We still have a parent injector, keep throwing\n                    throw e;\n                }\n                else {\n                    // Format & throw the final error message when we don't have any previous injector\n                    return catchInjectorError(e, token, 'R3InjectorError', this.source);\n                }\n            }\n            else {\n                throw e;\n            }\n        }\n        finally {\n            // Lastly, restore the previous injection context.\n            setInjectImplementation(previousInjectImplementation);\n            setCurrentInjector(previousInjector);\n        }\n    }\n    /** @internal */\n    resolveInjectorInitializers() {\n        const previousInjector = setCurrentInjector(this);\n        const previousInjectImplementation = setInjectImplementation(undefined);\n        try {\n            const initializers = this.get(ENVIRONMENT_INITIALIZER.multi, EMPTY_ARRAY, InjectFlags.Self);\n            if (ngDevMode && !Array.isArray(initializers)) {\n                throw new RuntimeError(-209 /* RuntimeErrorCode.INVALID_MULTI_PROVIDER */, 'Unexpected type of the `ENVIRONMENT_INITIALIZER` token value ' +\n                    `(expected an array, but got ${typeof initializers}). ` +\n                    'Please check that the `ENVIRONMENT_INITIALIZER` token is configured as a ' +\n                    '`multi: true` provider.');\n            }\n            for (const initializer of initializers) {\n                initializer();\n            }\n        }\n        finally {\n            setCurrentInjector(previousInjector);\n            setInjectImplementation(previousInjectImplementation);\n        }\n    }\n    toString() {\n        const tokens = [];\n        const records = this.records;\n        for (const token of records.keys()) {\n            tokens.push(stringify(token));\n        }\n        return `R3Injector[${tokens.join(', ')}]`;\n    }\n    assertNotDestroyed() {\n        if (this._destroyed) {\n            throw new RuntimeError(205 /* RuntimeErrorCode.INJECTOR_ALREADY_DESTROYED */, ngDevMode && 'Injector has already been destroyed.');\n        }\n    }\n    /**\n     * Process a `SingleProvider` and add it.\n     */\n    processProvider(provider) {\n        // Determine the token from the provider. Either it's its own token, or has a {provide: ...}\n        // property.\n        provider = resolveForwardRef(provider);\n        let token = isTypeProvider(provider) ? provider : resolveForwardRef(provider && provider.provide);\n        // Construct a `Record` for the provider.\n        const record = providerToRecord(provider);\n        if (!isTypeProvider(provider) && provider.multi === true) {\n            // If the provider indicates that it's a multi-provider, process it specially.\n            // First check whether it's been defined already.\n            let multiRecord = this.records.get(token);\n            if (multiRecord) {\n                // It has. Throw a nice error if\n                if (ngDevMode && multiRecord.multi === undefined) {\n                    throwMixedMultiProviderError();\n                }\n            }\n            else {\n                multiRecord = makeRecord(undefined, NOT_YET, true);\n                multiRecord.factory = () => injectArgs(multiRecord.multi);\n                this.records.set(token, multiRecord);\n            }\n            token = provider;\n            multiRecord.multi.push(provider);\n        }\n        else {\n            const existing = this.records.get(token);\n            if (ngDevMode && existing && existing.multi !== undefined) {\n                throwMixedMultiProviderError();\n            }\n        }\n        this.records.set(token, record);\n    }\n    hydrate(token, record) {\n        if (ngDevMode && record.value === CIRCULAR) {\n            throwCyclicDependencyError(stringify(token));\n        }\n        else if (record.value === NOT_YET) {\n            record.value = CIRCULAR;\n            record.value = record.factory();\n        }\n        if (typeof record.value === 'object' && record.value && hasOnDestroy(record.value)) {\n            this._ngOnDestroyHooks.add(record.value);\n        }\n        return record.value;\n    }\n    injectableDefInScope(def) {\n        if (!def.providedIn) {\n            return false;\n        }\n        const providedIn = resolveForwardRef(def.providedIn);\n        if (typeof providedIn === 'string') {\n            return providedIn === 'any' || (this.scopes.has(providedIn));\n        }\n        else {\n            return this.injectorDefTypes.has(providedIn);\n        }\n    }\n}\nfunction injectableDefOrInjectorDefFactory(token) {\n    // Most tokens will have an injectable def directly on them, which specifies a factory directly.\n    const injectableDef = getInjectableDef(token);\n    const factory = injectableDef !== null ? injectableDef.factory : getFactoryDef(token);\n    if (factory !== null) {\n        return factory;\n    }\n    // InjectionTokens should have an injectable def (ɵprov) and thus should be handled above.\n    // If it's missing that, it's an error.\n    if (token instanceof InjectionToken) {\n        throw new RuntimeError(204 /* RuntimeErrorCode.INVALID_INJECTION_TOKEN */, ngDevMode && `Token ${stringify(token)} is missing a ɵprov definition.`);\n    }\n    // Undecorated types can sometimes be created if they have no constructor arguments.\n    if (token instanceof Function) {\n        return getUndecoratedInjectableFactory(token);\n    }\n    // There was no way to resolve a factory for this token.\n    throw new RuntimeError(204 /* RuntimeErrorCode.INVALID_INJECTION_TOKEN */, ngDevMode && 'unreachable');\n}\nfunction getUndecoratedInjectableFactory(token) {\n    // If the token has parameters then it has dependencies that we cannot resolve implicitly.\n    const paramLength = token.length;\n    if (paramLength > 0) {\n        const args = newArray(paramLength, '?');\n        throw new RuntimeError(204 /* RuntimeErrorCode.INVALID_INJECTION_TOKEN */, ngDevMode && `Can't resolve all parameters for ${stringify(token)}: (${args.join(', ')}).`);\n    }\n    // The constructor function appears to have no parameters.\n    // This might be because it inherits from a super-class. In which case, use an injectable\n    // def from an ancestor if there is one.\n    // Otherwise this really is a simple class with no dependencies, so return a factory that\n    // just instantiates the zero-arg constructor.\n    const inheritedInjectableDef = getInheritedInjectableDef(token);\n    if (inheritedInjectableDef !== null) {\n        return () => inheritedInjectableDef.factory(token);\n    }\n    else {\n        return () => new token();\n    }\n}\nfunction providerToRecord(provider) {\n    if (isValueProvider(provider)) {\n        return makeRecord(undefined, provider.useValue);\n    }\n    else {\n        const factory = providerToFactory(provider);\n        return makeRecord(factory, NOT_YET);\n    }\n}\n/**\n * Converts a `SingleProvider` into a factory function.\n *\n * @param provider provider to convert to factory\n */\nfunction providerToFactory(provider, ngModuleType, providers) {\n    let factory = undefined;\n    if (ngDevMode && isEnvironmentProviders(provider)) {\n        throwInvalidProviderError(undefined, providers, provider);\n    }\n    if (isTypeProvider(provider)) {\n        const unwrappedProvider = resolveForwardRef(provider);\n        return getFactoryDef(unwrappedProvider) || injectableDefOrInjectorDefFactory(unwrappedProvider);\n    }\n    else {\n        if (isValueProvider(provider)) {\n            factory = () => resolveForwardRef(provider.useValue);\n        }\n        else if (isFactoryProvider(provider)) {\n            factory = () => provider.useFactory(...injectArgs(provider.deps || []));\n        }\n        else if (isExistingProvider(provider)) {\n            factory = () => ɵɵinject(resolveForwardRef(provider.useExisting));\n        }\n        else {\n            const classRef = resolveForwardRef(provider &&\n                (provider.useClass || provider.provide));\n            if (ngDevMode && !classRef) {\n                throwInvalidProviderError(ngModuleType, providers, provider);\n            }\n            if (hasDeps(provider)) {\n                factory = () => new (classRef)(...injectArgs(provider.deps));\n            }\n            else {\n                return getFactoryDef(classRef) || injectableDefOrInjectorDefFactory(classRef);\n            }\n        }\n    }\n    return factory;\n}\nfunction makeRecord(factory, value, multi = false) {\n    return {\n        factory: factory,\n        value: value,\n        multi: multi ? [] : undefined,\n    };\n}\nfunction hasDeps(value) {\n    return !!value.deps;\n}\nfunction hasOnDestroy(value) {\n    return value !== null && typeof value === 'object' &&\n        typeof value.ngOnDestroy === 'function';\n}\nfunction couldBeInjectableType(value) {\n    return (typeof value === 'function') ||\n        (typeof value === 'object' && value instanceof InjectionToken);\n}\nfunction forEachSingleProvider(providers, fn) {\n    for (const provider of providers) {\n        if (Array.isArray(provider)) {\n            forEachSingleProvider(provider, fn);\n        }\n        else if (provider && isEnvironmentProviders(provider)) {\n            forEachSingleProvider(provider.ɵproviders, fn);\n        }\n        else {\n            fn(provider);\n        }\n    }\n}\n\n/**\n * Represents a component created by a `ComponentFactory`.\n * Provides access to the component instance and related objects,\n * and provides the means of destroying the instance.\n *\n * @publicApi\n */\nclass ComponentRef$1 {\n}\n/**\n * Base class for a factory that can create a component dynamically.\n * Instantiate a factory for a given type of component with `resolveComponentFactory()`.\n * Use the resulting `ComponentFactory.create()` method to create a component of that type.\n *\n * @see [Dynamic Components](guide/dynamic-component-loader)\n *\n * @publicApi\n *\n * @deprecated Angular no longer requires Component factories. Please use other APIs where\n *     Component class can be used directly.\n */\nclass ComponentFactory$1 {\n}\n\nfunction noComponentFactoryError(component) {\n    const error = Error(`No component factory found for ${stringify(component)}. Did you add it to @NgModule.entryComponents?`);\n    error[ERROR_COMPONENT] = component;\n    return error;\n}\nconst ERROR_COMPONENT = 'ngComponent';\nfunction getComponent$1(error) {\n    return error[ERROR_COMPONENT];\n}\nclass _NullComponentFactoryResolver {\n    resolveComponentFactory(component) {\n        throw noComponentFactoryError(component);\n    }\n}\n/**\n * A simple registry that maps `Components` to generated `ComponentFactory` classes\n * that can be used to create instances of components.\n * Use to obtain the factory for a given component type,\n * then use the factory's `create()` method to create a component of that type.\n *\n * Note: since v13, dynamic component creation via\n * [`ViewContainerRef.createComponent`](api/core/ViewContainerRef#createComponent)\n * does **not** require resolving component factory: component class can be used directly.\n *\n * @publicApi\n *\n * @deprecated Angular no longer requires Component factories. Please use other APIs where\n *     Component class can be used directly.\n */\nclass ComponentFactoryResolver$1 {\n}\nComponentFactoryResolver$1.NULL = ( /* @__PURE__ */new _NullComponentFactoryResolver());\n\n/**\n * Creates an ElementRef from the most recent node.\n *\n * @returns The ElementRef instance to use\n */\nfunction injectElementRef() {\n    return createElementRef(getCurrentTNode(), getLView());\n}\n/**\n * Creates an ElementRef given a node.\n *\n * @param tNode The node for which you'd like an ElementRef\n * @param lView The view to which the node belongs\n * @returns The ElementRef instance to use\n */\nfunction createElementRef(tNode, lView) {\n    return new ElementRef(getNativeByTNode(tNode, lView));\n}\n/**\n * A wrapper around a native element inside of a View.\n *\n * An `ElementRef` is backed by a render-specific element. In the browser, this is usually a DOM\n * element.\n *\n * @security Permitting direct access to the DOM can make your application more vulnerable to\n * XSS attacks. Carefully review any use of `ElementRef` in your code. For more detail, see the\n * [Security Guide](https://g.co/ng/security).\n *\n * @publicApi\n */\n// Note: We don't expose things like `Injector`, `ViewContainer`, ... here,\n// i.e. users have to ask for what they need. With that, we can build better analysis tools\n// and could do better codegen in the future.\nclass ElementRef {\n    constructor(nativeElement) {\n        this.nativeElement = nativeElement;\n    }\n}\n/**\n * @internal\n * @nocollapse\n */\nElementRef.__NG_ELEMENT_ID__ = injectElementRef;\n/**\n * Unwraps `ElementRef` and return the `nativeElement`.\n *\n * @param value value to unwrap\n * @returns `nativeElement` if `ElementRef` otherwise returns value as is.\n */\nfunction unwrapElementRef(value) {\n    return value instanceof ElementRef ? value.nativeElement : value;\n}\n\n/**\n * Creates and initializes a custom renderer that implements the `Renderer2` base class.\n *\n * @publicApi\n */\nclass RendererFactory2 {\n}\n/**\n * Extend this base class to implement custom rendering. By default, Angular\n * renders a template into DOM. You can use custom rendering to intercept\n * rendering calls, or to render to something other than DOM.\n *\n * Create your custom renderer using `RendererFactory2`.\n *\n * Use a custom renderer to bypass Angular's templating and\n * make custom UI changes that can't be expressed declaratively.\n * For example if you need to set a property or an attribute whose name is\n * not statically known, use the `setProperty()` or\n * `setAttribute()` method.\n *\n * @publicApi\n */\nclass Renderer2 {\n}\n/**\n * @internal\n * @nocollapse\n */\nRenderer2.__NG_ELEMENT_ID__ = () => injectRenderer2();\n/** Injects a Renderer2 for the current component. */\nfunction injectRenderer2() {\n    // We need the Renderer to be based on the component that it's being injected into, however since\n    // DI happens before we've entered its view, `getLView` will return the parent view instead.\n    const lView = getLView();\n    const tNode = getCurrentTNode();\n    const nodeAtIndex = getComponentLViewByIndex(tNode.index, lView);\n    return (isLView(nodeAtIndex) ? nodeAtIndex : lView)[RENDERER];\n}\n\n/**\n * Sanitizer is used by the views to sanitize potentially dangerous values.\n *\n * @publicApi\n */\nclass Sanitizer {\n}\n/** @nocollapse */\nSanitizer.ɵprov = ɵɵdefineInjectable({\n    token: Sanitizer,\n    providedIn: 'root',\n    factory: () => null,\n});\n\n/**\n * @description Represents the version of Angular\n *\n * @publicApi\n */\nclass Version {\n    constructor(full) {\n        this.full = full;\n        this.major = full.split('.')[0];\n        this.minor = full.split('.')[1];\n        this.patch = full.split('.').slice(2).join('.');\n    }\n}\n/**\n * @publicApi\n */\nconst VERSION = new Version('15.2.10');\n\n// This default value is when checking the hierarchy for a token.\n//\n// It means both:\n// - the token is not provided by the current injector,\n// - only the element injectors should be checked (ie do not check module injectors\n//\n//          mod1\n//         /\n//       el1   mod2\n//         \\  /\n//         el2\n//\n// When requesting el2.injector.get(token), we should check in the following order and return the\n// first found value:\n// - el2.injector.get(token, default)\n// - el1.injector.get(token, NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR) -> do not check the module\n// - mod2.injector.get(token, default)\nconst NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR = {};\n\nconst ERROR_ORIGINAL_ERROR = 'ngOriginalError';\nfunction wrappedError(message, originalError) {\n    const msg = `${message} caused by: ${originalError instanceof Error ? originalError.message : originalError}`;\n    const error = Error(msg);\n    error[ERROR_ORIGINAL_ERROR] = originalError;\n    return error;\n}\nfunction getOriginalError(error) {\n    return error[ERROR_ORIGINAL_ERROR];\n}\n\n/**\n * Provides a hook for centralized exception handling.\n *\n * The default implementation of `ErrorHandler` prints error messages to the `console`. To\n * intercept error handling, write a custom exception handler that replaces this default as\n * appropriate for your app.\n *\n * @usageNotes\n * ### Example\n *\n * ```\n * class MyErrorHandler implements ErrorHandler {\n *   handleError(error) {\n *     // do something with the exception\n *   }\n * }\n *\n * @NgModule({\n *   providers: [{provide: ErrorHandler, useClass: MyErrorHandler}]\n * })\n * class MyModule {}\n * ```\n *\n * @publicApi\n */\nclass ErrorHandler {\n    constructor() {\n        /**\n         * @internal\n         */\n        this._console = console;\n    }\n    handleError(error) {\n        const originalError = this._findOriginalError(error);\n        this._console.error('ERROR', error);\n        if (originalError) {\n            this._console.error('ORIGINAL ERROR', originalError);\n        }\n    }\n    /** @internal */\n    _findOriginalError(error) {\n        let e = error && getOriginalError(error);\n        while (e && getOriginalError(e)) {\n            e = getOriginalError(e);\n        }\n        return e || null;\n    }\n}\n\nfunction normalizeDebugBindingName(name) {\n    // Attribute names with `$` (eg `x-y$`) are valid per spec, but unsupported by some browsers\n    name = camelCaseToDashCase(name.replace(/[$@]/g, '_'));\n    return `ng-reflect-${name}`;\n}\nconst CAMEL_CASE_REGEXP = /([A-Z])/g;\nfunction camelCaseToDashCase(input) {\n    return input.replace(CAMEL_CASE_REGEXP, (...m) => '-' + m[1].toLowerCase());\n}\nfunction normalizeDebugBindingValue(value) {\n    try {\n        // Limit the size of the value as otherwise the DOM just gets polluted.\n        return value != null ? value.toString().slice(0, 30) : value;\n    }\n    catch (e) {\n        return '[ERROR] Exception while trying to serialize the value';\n    }\n}\n\n/**\n *\n * @codeGenApi\n */\nfunction ɵɵresolveWindow(element) {\n    return element.ownerDocument.defaultView;\n}\n/**\n *\n * @codeGenApi\n */\nfunction ɵɵresolveDocument(element) {\n    return element.ownerDocument;\n}\n/**\n *\n * @codeGenApi\n */\nfunction ɵɵresolveBody(element) {\n    return element.ownerDocument.body;\n}\n/**\n * The special delimiter we use to separate property names, prefixes, and suffixes\n * in property binding metadata. See storeBindingMetadata().\n *\n * We intentionally use the Unicode \"REPLACEMENT CHARACTER\" (U+FFFD) as a delimiter\n * because it is a very uncommon character that is unlikely to be part of a user's\n * property names or interpolation strings. If it is in fact used in a property\n * binding, DebugElement.properties will not return the correct value for that\n * binding. However, there should be no runtime effect for real applications.\n *\n * This character is typically rendered as a question mark inside of a diamond.\n * See https://en.wikipedia.org/wiki/Specials_(Unicode_block)\n *\n */\nconst INTERPOLATION_DELIMITER = `�`;\n/**\n * Unwrap a value which might be behind a closure (for forward declaration reasons).\n */\nfunction maybeUnwrapFn(value) {\n    if (value instanceof Function) {\n        return value();\n    }\n    else {\n        return value;\n    }\n}\n\n/** Verifies that a given type is a Standalone Component. */\nfunction assertStandaloneComponentType(type) {\n    assertComponentDef(type);\n    const componentDef = getComponentDef(type);\n    if (!componentDef.standalone) {\n        throw new RuntimeError(907 /* RuntimeErrorCode.TYPE_IS_NOT_STANDALONE */, `The ${stringifyForError(type)} component is not marked as standalone, ` +\n            `but Angular expects to have a standalone component here. ` +\n            `Please make sure the ${stringifyForError(type)} component has ` +\n            `the \\`standalone: true\\` flag in the decorator.`);\n    }\n}\n/** Verifies whether a given type is a component */\nfunction assertComponentDef(type) {\n    if (!getComponentDef(type)) {\n        throw new RuntimeError(906 /* RuntimeErrorCode.MISSING_GENERATED_DEF */, `The ${stringifyForError(type)} is not an Angular component, ` +\n            `make sure it has the \\`@Component\\` decorator.`);\n    }\n}\n/** Called when there are multiple component selectors that match a given node */\nfunction throwMultipleComponentError(tNode, first, second) {\n    throw new RuntimeError(-300 /* RuntimeErrorCode.MULTIPLE_COMPONENTS_MATCH */, `Multiple components match node with tagname ${tNode.value}: ` +\n        `${stringifyForError(first)} and ` +\n        `${stringifyForError(second)}`);\n}\n/** Throws an ExpressionChangedAfterChecked error if checkNoChanges mode is on. */\nfunction throwErrorIfNoChangesMode(creationMode, oldValue, currValue, propName) {\n    const field = propName ? ` for '${propName}'` : '';\n    let msg = `ExpressionChangedAfterItHasBeenCheckedError: Expression has changed after it was checked. Previous value${field}: '${oldValue}'. Current value: '${currValue}'.`;\n    if (creationMode) {\n        msg +=\n            ` It seems like the view has been created after its parent and its children have been dirty checked.` +\n                ` Has it been created in a change detection hook?`;\n    }\n    throw new RuntimeError(-100 /* RuntimeErrorCode.EXPRESSION_CHANGED_AFTER_CHECKED */, msg);\n}\nfunction constructDetailsForInterpolation(lView, rootIndex, expressionIndex, meta, changedValue) {\n    const [propName, prefix, ...chunks] = meta.split(INTERPOLATION_DELIMITER);\n    let oldValue = prefix, newValue = prefix;\n    for (let i = 0; i < chunks.length; i++) {\n        const slotIdx = rootIndex + i;\n        oldValue += `${lView[slotIdx]}${chunks[i]}`;\n        newValue += `${slotIdx === expressionIndex ? changedValue : lView[slotIdx]}${chunks[i]}`;\n    }\n    return { propName, oldValue, newValue };\n}\n/**\n * Constructs an object that contains details for the ExpressionChangedAfterItHasBeenCheckedError:\n * - property name (for property bindings or interpolations)\n * - old and new values, enriched using information from metadata\n *\n * More information on the metadata storage format can be found in `storePropertyBindingMetadata`\n * function description.\n */\nfunction getExpressionChangedErrorDetails(lView, bindingIndex, oldValue, newValue) {\n    const tData = lView[TVIEW].data;\n    const metadata = tData[bindingIndex];\n    if (typeof metadata === 'string') {\n        // metadata for property interpolation\n        if (metadata.indexOf(INTERPOLATION_DELIMITER) > -1) {\n            return constructDetailsForInterpolation(lView, bindingIndex, bindingIndex, metadata, newValue);\n        }\n        // metadata for property binding\n        return { propName: metadata, oldValue, newValue };\n    }\n    // metadata is not available for this expression, check if this expression is a part of the\n    // property interpolation by going from the current binding index left and look for a string that\n    // contains INTERPOLATION_DELIMITER, the layout in tView.data for this case will look like this:\n    // [..., 'id�Prefix � and � suffix', null, null, null, ...]\n    if (metadata === null) {\n        let idx = bindingIndex - 1;\n        while (typeof tData[idx] !== 'string' && tData[idx + 1] === null) {\n            idx--;\n        }\n        const meta = tData[idx];\n        if (typeof meta === 'string') {\n            const matches = meta.match(new RegExp(INTERPOLATION_DELIMITER, 'g'));\n            // first interpolation delimiter separates property name from interpolation parts (in case of\n            // property interpolations), so we subtract one from total number of found delimiters\n            if (matches && (matches.length - 1) > bindingIndex - idx) {\n                return constructDetailsForInterpolation(lView, idx, bindingIndex, meta, newValue);\n            }\n        }\n    }\n    return { propName: undefined, oldValue, newValue };\n}\n\n/**\n * Returns an index of `classToSearch` in `className` taking token boundaries into account.\n *\n * `classIndexOf('AB A', 'A', 0)` will be 3 (not 0 since `AB!==A`)\n *\n * @param className A string containing classes (whitespace separated)\n * @param classToSearch A class name to locate\n * @param startingIndex Starting location of search\n * @returns an index of the located class (or -1 if not found)\n */\nfunction classIndexOf(className, classToSearch, startingIndex) {\n    ngDevMode && assertNotEqual(classToSearch, '', 'can not look for \"\" string.');\n    let end = className.length;\n    while (true) {\n        const foundIndex = className.indexOf(classToSearch, startingIndex);\n        if (foundIndex === -1)\n            return foundIndex;\n        if (foundIndex === 0 || className.charCodeAt(foundIndex - 1) <= 32 /* CharCode.SPACE */) {\n            // Ensure that it has leading whitespace\n            const length = classToSearch.length;\n            if (foundIndex + length === end ||\n                className.charCodeAt(foundIndex + length) <= 32 /* CharCode.SPACE */) {\n                // Ensure that it has trailing whitespace\n                return foundIndex;\n            }\n        }\n        // False positive, keep searching from where we left off.\n        startingIndex = foundIndex + 1;\n    }\n}\n\nconst NG_TEMPLATE_SELECTOR = 'ng-template';\n/**\n * Search the `TAttributes` to see if it contains `cssClassToMatch` (case insensitive)\n *\n * @param attrs `TAttributes` to search through.\n * @param cssClassToMatch class to match (lowercase)\n * @param isProjectionMode Whether or not class matching should look into the attribute `class` in\n *    addition to the `AttributeMarker.Classes`.\n */\nfunction isCssClassMatching(attrs, cssClassToMatch, isProjectionMode) {\n    // TODO(misko): The fact that this function needs to know about `isProjectionMode` seems suspect.\n    // It is strange to me that sometimes the class information comes in form of `class` attribute\n    // and sometimes in form of `AttributeMarker.Classes`. Some investigation is needed to determine\n    // if that is the right behavior.\n    ngDevMode &&\n        assertEqual(cssClassToMatch, cssClassToMatch.toLowerCase(), 'Class name expected to be lowercase.');\n    let i = 0;\n    // Indicates whether we are processing value from the implicit\n    // attribute section (i.e. before the first marker in the array).\n    let isImplicitAttrsSection = true;\n    while (i < attrs.length) {\n        let item = attrs[i++];\n        if (typeof item === 'string' && isImplicitAttrsSection) {\n            const value = attrs[i++];\n            if (isProjectionMode && item === 'class') {\n                // We found a `class` attribute in the implicit attribute section,\n                // check if it matches the value of the `cssClassToMatch` argument.\n                if (classIndexOf(value.toLowerCase(), cssClassToMatch, 0) !== -1) {\n                    return true;\n                }\n            }\n        }\n        else if (item === 1 /* AttributeMarker.Classes */) {\n            // We found the classes section. Start searching for the class.\n            while (i < attrs.length && typeof (item = attrs[i++]) == 'string') {\n                // while we have strings\n                if (item.toLowerCase() === cssClassToMatch)\n                    return true;\n            }\n            return false;\n        }\n        else if (typeof item === 'number') {\n            // We've came across a first marker, which indicates\n            // that the implicit attribute section is over.\n            isImplicitAttrsSection = false;\n        }\n    }\n    return false;\n}\n/**\n * Checks whether the `tNode` represents an inline template (e.g. `*ngFor`).\n *\n * @param tNode current TNode\n */\nfunction isInlineTemplate(tNode) {\n    return tNode.type === 4 /* TNodeType.Container */ && tNode.value !== NG_TEMPLATE_SELECTOR;\n}\n/**\n * Function that checks whether a given tNode matches tag-based selector and has a valid type.\n *\n * Matching can be performed in 2 modes: projection mode (when we project nodes) and regular\n * directive matching mode:\n * - in the \"directive matching\" mode we do _not_ take TContainer's tagName into account if it is\n * different from NG_TEMPLATE_SELECTOR (value different from NG_TEMPLATE_SELECTOR indicates that a\n * tag name was extracted from * syntax so we would match the same directive twice);\n * - in the \"projection\" mode, we use a tag name potentially extracted from the * syntax processing\n * (applicable to TNodeType.Container only).\n */\nfunction hasTagAndTypeMatch(tNode, currentSelector, isProjectionMode) {\n    const tagNameToCompare = tNode.type === 4 /* TNodeType.Container */ && !isProjectionMode ? NG_TEMPLATE_SELECTOR : tNode.value;\n    return currentSelector === tagNameToCompare;\n}\n/**\n * A utility function to match an Ivy node static data against a simple CSS selector\n *\n * @param node static data of the node to match\n * @param selector The selector to try matching against the node.\n * @param isProjectionMode if `true` we are matching for content projection, otherwise we are doing\n * directive matching.\n * @returns true if node matches the selector.\n */\nfunction isNodeMatchingSelector(tNode, selector, isProjectionMode) {\n    ngDevMode && assertDefined(selector[0], 'Selector should have a tag name');\n    let mode = 4 /* SelectorFlags.ELEMENT */;\n    const nodeAttrs = tNode.attrs || [];\n    // Find the index of first attribute that has no value, only a name.\n    const nameOnlyMarkerIdx = getNameOnlyMarkerIndex(nodeAttrs);\n    // When processing \":not\" selectors, we skip to the next \":not\" if the\n    // current one doesn't match\n    let skipToNextSelector = false;\n    for (let i = 0; i < selector.length; i++) {\n        const current = selector[i];\n        if (typeof current === 'number') {\n            // If we finish processing a :not selector and it hasn't failed, return false\n            if (!skipToNextSelector && !isPositive(mode) && !isPositive(current)) {\n                return false;\n            }\n            // If we are skipping to the next :not() and this mode flag is positive,\n            // it's a part of the current :not() selector, and we should keep skipping\n            if (skipToNextSelector && isPositive(current))\n                continue;\n            skipToNextSelector = false;\n            mode = current | (mode & 1 /* SelectorFlags.NOT */);\n            continue;\n        }\n        if (skipToNextSelector)\n            continue;\n        if (mode & 4 /* SelectorFlags.ELEMENT */) {\n            mode = 2 /* SelectorFlags.ATTRIBUTE */ | mode & 1 /* SelectorFlags.NOT */;\n            if (current !== '' && !hasTagAndTypeMatch(tNode, current, isProjectionMode) ||\n                current === '' && selector.length === 1) {\n                if (isPositive(mode))\n                    return false;\n                skipToNextSelector = true;\n            }\n        }\n        else {\n            const selectorAttrValue = mode & 8 /* SelectorFlags.CLASS */ ? current : selector[++i];\n            // special case for matching against classes when a tNode has been instantiated with\n            // class and style values as separate attribute values (e.g. ['title', CLASS, 'foo'])\n            if ((mode & 8 /* SelectorFlags.CLASS */) && tNode.attrs !== null) {\n                if (!isCssClassMatching(tNode.attrs, selectorAttrValue, isProjectionMode)) {\n                    if (isPositive(mode))\n                        return false;\n                    skipToNextSelector = true;\n                }\n                continue;\n            }\n            const attrName = (mode & 8 /* SelectorFlags.CLASS */) ? 'class' : current;\n            const attrIndexInNode = findAttrIndexInNode(attrName, nodeAttrs, isInlineTemplate(tNode), isProjectionMode);\n            if (attrIndexInNode === -1) {\n                if (isPositive(mode))\n                    return false;\n                skipToNextSelector = true;\n                continue;\n            }\n            if (selectorAttrValue !== '') {\n                let nodeAttrValue;\n                if (attrIndexInNode > nameOnlyMarkerIdx) {\n                    nodeAttrValue = '';\n                }\n                else {\n                    ngDevMode &&\n                        assertNotEqual(nodeAttrs[attrIndexInNode], 0 /* AttributeMarker.NamespaceURI */, 'We do not match directives on namespaced attributes');\n                    // we lowercase the attribute value to be able to match\n                    // selectors without case-sensitivity\n                    // (selectors are already in lowercase when generated)\n                    nodeAttrValue = nodeAttrs[attrIndexInNode + 1].toLowerCase();\n                }\n                const compareAgainstClassName = mode & 8 /* SelectorFlags.CLASS */ ? nodeAttrValue : null;\n                if (compareAgainstClassName &&\n                    classIndexOf(compareAgainstClassName, selectorAttrValue, 0) !== -1 ||\n                    mode & 2 /* SelectorFlags.ATTRIBUTE */ && selectorAttrValue !== nodeAttrValue) {\n                    if (isPositive(mode))\n                        return false;\n                    skipToNextSelector = true;\n                }\n            }\n        }\n    }\n    return isPositive(mode) || skipToNextSelector;\n}\nfunction isPositive(mode) {\n    return (mode & 1 /* SelectorFlags.NOT */) === 0;\n}\n/**\n * Examines the attribute's definition array for a node to find the index of the\n * attribute that matches the given `name`.\n *\n * NOTE: This will not match namespaced attributes.\n *\n * Attribute matching depends upon `isInlineTemplate` and `isProjectionMode`.\n * The following table summarizes which types of attributes we attempt to match:\n *\n * ===========================================================================================================\n * Modes                   | Normal Attributes | Bindings Attributes | Template Attributes | I18n\n * Attributes\n * ===========================================================================================================\n * Inline + Projection     | YES               | YES                 | NO                  | YES\n * -----------------------------------------------------------------------------------------------------------\n * Inline + Directive      | NO                | NO                  | YES                 | NO\n * -----------------------------------------------------------------------------------------------------------\n * Non-inline + Projection | YES               | YES                 | NO                  | YES\n * -----------------------------------------------------------------------------------------------------------\n * Non-inline + Directive  | YES               | YES                 | NO                  | YES\n * ===========================================================================================================\n *\n * @param name the name of the attribute to find\n * @param attrs the attribute array to examine\n * @param isInlineTemplate true if the node being matched is an inline template (e.g. `*ngFor`)\n * rather than a manually expanded template node (e.g `<ng-template>`).\n * @param isProjectionMode true if we are matching against content projection otherwise we are\n * matching against directives.\n */\nfunction findAttrIndexInNode(name, attrs, isInlineTemplate, isProjectionMode) {\n    if (attrs === null)\n        return -1;\n    let i = 0;\n    if (isProjectionMode || !isInlineTemplate) {\n        let bindingsMode = false;\n        while (i < attrs.length) {\n            const maybeAttrName = attrs[i];\n            if (maybeAttrName === name) {\n                return i;\n            }\n            else if (maybeAttrName === 3 /* AttributeMarker.Bindings */ || maybeAttrName === 6 /* AttributeMarker.I18n */) {\n                bindingsMode = true;\n            }\n            else if (maybeAttrName === 1 /* AttributeMarker.Classes */ || maybeAttrName === 2 /* AttributeMarker.Styles */) {\n                let value = attrs[++i];\n                // We should skip classes here because we have a separate mechanism for\n                // matching classes in projection mode.\n                while (typeof value === 'string') {\n                    value = attrs[++i];\n                }\n                continue;\n            }\n            else if (maybeAttrName === 4 /* AttributeMarker.Template */) {\n                // We do not care about Template attributes in this scenario.\n                break;\n            }\n            else if (maybeAttrName === 0 /* AttributeMarker.NamespaceURI */) {\n                // Skip the whole namespaced attribute and value. This is by design.\n                i += 4;\n                continue;\n            }\n            // In binding mode there are only names, rather than name-value pairs.\n            i += bindingsMode ? 1 : 2;\n        }\n        // We did not match the attribute\n        return -1;\n    }\n    else {\n        return matchTemplateAttribute(attrs, name);\n    }\n}\nfunction isNodeMatchingSelectorList(tNode, selector, isProjectionMode = false) {\n    for (let i = 0; i < selector.length; i++) {\n        if (isNodeMatchingSelector(tNode, selector[i], isProjectionMode)) {\n            return true;\n        }\n    }\n    return false;\n}\nfunction getProjectAsAttrValue(tNode) {\n    const nodeAttrs = tNode.attrs;\n    if (nodeAttrs != null) {\n        const ngProjectAsAttrIdx = nodeAttrs.indexOf(5 /* AttributeMarker.ProjectAs */);\n        // only check for ngProjectAs in attribute names, don't accidentally match attribute's value\n        // (attribute names are stored at even indexes)\n        if ((ngProjectAsAttrIdx & 1) === 0) {\n            return nodeAttrs[ngProjectAsAttrIdx + 1];\n        }\n    }\n    return null;\n}\nfunction getNameOnlyMarkerIndex(nodeAttrs) {\n    for (let i = 0; i < nodeAttrs.length; i++) {\n        const nodeAttr = nodeAttrs[i];\n        if (isNameOnlyAttributeMarker(nodeAttr)) {\n            return i;\n        }\n    }\n    return nodeAttrs.length;\n}\nfunction matchTemplateAttribute(attrs, name) {\n    let i = attrs.indexOf(4 /* AttributeMarker.Template */);\n    if (i > -1) {\n        i++;\n        while (i < attrs.length) {\n            const attr = attrs[i];\n            // Return in case we checked all template attrs and are switching to the next section in the\n            // attrs array (that starts with a number that represents an attribute marker).\n            if (typeof attr === 'number')\n                return -1;\n            if (attr === name)\n                return i;\n            i++;\n        }\n    }\n    return -1;\n}\n/**\n * Checks whether a selector is inside a CssSelectorList\n * @param selector Selector to be checked.\n * @param list List in which to look for the selector.\n */\nfunction isSelectorInSelectorList(selector, list) {\n    selectorListLoop: for (let i = 0; i < list.length; i++) {\n        const currentSelectorInList = list[i];\n        if (selector.length !== currentSelectorInList.length) {\n            continue;\n        }\n        for (let j = 0; j < selector.length; j++) {\n            if (selector[j] !== currentSelectorInList[j]) {\n                continue selectorListLoop;\n            }\n        }\n        return true;\n    }\n    return false;\n}\nfunction maybeWrapInNotSelector(isNegativeMode, chunk) {\n    return isNegativeMode ? ':not(' + chunk.trim() + ')' : chunk;\n}\nfunction stringifyCSSSelector(selector) {\n    let result = selector[0];\n    let i = 1;\n    let mode = 2 /* SelectorFlags.ATTRIBUTE */;\n    let currentChunk = '';\n    let isNegativeMode = false;\n    while (i < selector.length) {\n        let valueOrMarker = selector[i];\n        if (typeof valueOrMarker === 'string') {\n            if (mode & 2 /* SelectorFlags.ATTRIBUTE */) {\n                const attrValue = selector[++i];\n                currentChunk +=\n                    '[' + valueOrMarker + (attrValue.length > 0 ? '=\"' + attrValue + '\"' : '') + ']';\n            }\n            else if (mode & 8 /* SelectorFlags.CLASS */) {\n                currentChunk += '.' + valueOrMarker;\n            }\n            else if (mode & 4 /* SelectorFlags.ELEMENT */) {\n                currentChunk += ' ' + valueOrMarker;\n            }\n        }\n        else {\n            //\n            // Append current chunk to the final result in case we come across SelectorFlag, which\n            // indicates that the previous section of a selector is over. We need to accumulate content\n            // between flags to make sure we wrap the chunk later in :not() selector if needed, e.g.\n            // ```\n            //  ['', Flags.CLASS, '.classA', Flags.CLASS | Flags.NOT, '.classB', '.classC']\n            // ```\n            // should be transformed to `.classA :not(.classB .classC)`.\n            //\n            // Note: for negative selector part, we accumulate content between flags until we find the\n            // next negative flag. This is needed to support a case where `:not()` rule contains more than\n            // one chunk, e.g. the following selector:\n            // ```\n            //  ['', Flags.ELEMENT | Flags.NOT, 'p', Flags.CLASS, 'foo', Flags.CLASS | Flags.NOT, 'bar']\n            // ```\n            // should be stringified to `:not(p.foo) :not(.bar)`\n            //\n            if (currentChunk !== '' && !isPositive(valueOrMarker)) {\n                result += maybeWrapInNotSelector(isNegativeMode, currentChunk);\n                currentChunk = '';\n            }\n            mode = valueOrMarker;\n            // According to CssSelector spec, once we come across `SelectorFlags.NOT` flag, the negative\n            // mode is maintained for remaining chunks of a selector.\n            isNegativeMode = isNegativeMode || !isPositive(mode);\n        }\n        i++;\n    }\n    if (currentChunk !== '') {\n        result += maybeWrapInNotSelector(isNegativeMode, currentChunk);\n    }\n    return result;\n}\n/**\n * Generates string representation of CSS selector in parsed form.\n *\n * ComponentDef and DirectiveDef are generated with the selector in parsed form to avoid doing\n * additional parsing at runtime (for example, for directive matching). However in some cases (for\n * example, while bootstrapping a component), a string version of the selector is required to query\n * for the host element on the page. This function takes the parsed form of a selector and returns\n * its string representation.\n *\n * @param selectorList selector in parsed form\n * @returns string representation of a given selector\n */\nfunction stringifyCSSSelectorList(selectorList) {\n    return selectorList.map(stringifyCSSSelector).join(',');\n}\n/**\n * Extracts attributes and classes information from a given CSS selector.\n *\n * This function is used while creating a component dynamically. In this case, the host element\n * (that is created dynamically) should contain attributes and classes specified in component's CSS\n * selector.\n *\n * @param selector CSS selector in parsed form (in a form of array)\n * @returns object with `attrs` and `classes` fields that contain extracted information\n */\nfunction extractAttrsAndClassesFromSelector(selector) {\n    const attrs = [];\n    const classes = [];\n    let i = 1;\n    let mode = 2 /* SelectorFlags.ATTRIBUTE */;\n    while (i < selector.length) {\n        let valueOrMarker = selector[i];\n        if (typeof valueOrMarker === 'string') {\n            if (mode === 2 /* SelectorFlags.ATTRIBUTE */) {\n                if (valueOrMarker !== '') {\n                    attrs.push(valueOrMarker, selector[++i]);\n                }\n            }\n            else if (mode === 8 /* SelectorFlags.CLASS */) {\n                classes.push(valueOrMarker);\n            }\n        }\n        else {\n            // According to CssSelector spec, once we come across `SelectorFlags.NOT` flag, the negative\n            // mode is maintained for remaining chunks of a selector. Since attributes and classes are\n            // extracted only for \"positive\" part of the selector, we can stop here.\n            if (!isPositive(mode))\n                break;\n            mode = valueOrMarker;\n        }\n        i++;\n    }\n    return { attrs, classes };\n}\n\n/** A special value which designates that a value has not changed. */\nconst NO_CHANGE = (typeof ngDevMode === 'undefined' || ngDevMode) ? { __brand__: 'NO_CHANGE' } : {};\n\n/**\n * Advances to an element for later binding instructions.\n *\n * Used in conjunction with instructions like {@link property} to act on elements with specified\n * indices, for example those created with {@link element} or {@link elementStart}.\n *\n * ```ts\n * (rf: RenderFlags, ctx: any) => {\n *   if (rf & 1) {\n *     text(0, 'Hello');\n *     text(1, 'Goodbye')\n *     element(2, 'div');\n *   }\n *   if (rf & 2) {\n *     advance(2); // Advance twice to the <div>.\n *     property('title', 'test');\n *   }\n *  }\n * ```\n * @param delta Number of elements to advance forwards by.\n *\n * @codeGenApi\n */\nfunction ɵɵadvance(delta) {\n    ngDevMode && assertGreaterThan(delta, 0, 'Can only advance forward');\n    selectIndexInternal(getTView(), getLView(), getSelectedIndex() + delta, !!ngDevMode && isInCheckNoChangesMode());\n}\nfunction selectIndexInternal(tView, lView, index, checkNoChangesMode) {\n    ngDevMode && assertIndexInDeclRange(lView, index);\n    // Flush the initial hooks for elements in the view that have been added up to this point.\n    // PERF WARNING: do NOT extract this to a separate function without running benchmarks\n    if (!checkNoChangesMode) {\n        const hooksInitPhaseCompleted = (lView[FLAGS] & 3 /* LViewFlags.InitPhaseStateMask */) === 3 /* InitPhaseState.InitPhaseCompleted */;\n        if (hooksInitPhaseCompleted) {\n            const preOrderCheckHooks = tView.preOrderCheckHooks;\n            if (preOrderCheckHooks !== null) {\n                executeCheckHooks(lView, preOrderCheckHooks, index);\n            }\n        }\n        else {\n            const preOrderHooks = tView.preOrderHooks;\n            if (preOrderHooks !== null) {\n                executeInitAndCheckHooks(lView, preOrderHooks, 0 /* InitPhaseState.OnInitHooksToBeRun */, index);\n            }\n        }\n    }\n    // We must set the selected index *after* running the hooks, because hooks may have side-effects\n    // that cause other template functions to run, thus updating the selected index, which is global\n    // state. If we run `setSelectedIndex` *before* we run the hooks, in some cases the selected index\n    // will be altered by the time we leave the `ɵɵadvance` instruction.\n    setSelectedIndex(index);\n}\n\n/**\n * A mapping of the @angular/core API surface used in generated expressions to the actual symbols.\n *\n * This should be kept up to date with the public exports of @angular/core.\n */\nconst angularCoreDiEnv = {\n    'ɵɵdefineInjectable': ɵɵdefineInjectable,\n    'ɵɵdefineInjector': ɵɵdefineInjector,\n    'ɵɵinject': ɵɵinject,\n    'ɵɵinvalidFactoryDep': ɵɵinvalidFactoryDep,\n    'resolveForwardRef': resolveForwardRef,\n};\n\n/**\n * Compile an Angular injectable according to its `Injectable` metadata, and patch the resulting\n * injectable def (`ɵprov`) onto the injectable type.\n */\nfunction compileInjectable(type, meta) {\n    let ngInjectableDef = null;\n    let ngFactoryDef = null;\n    // if NG_PROV_DEF is already defined on this class then don't overwrite it\n    if (!type.hasOwnProperty(NG_PROV_DEF)) {\n        Object.defineProperty(type, NG_PROV_DEF, {\n            get: () => {\n                if (ngInjectableDef === null) {\n                    const compiler = getCompilerFacade({ usage: 0 /* JitCompilerUsage.Decorator */, kind: 'injectable', type });\n                    ngInjectableDef = compiler.compileInjectable(angularCoreDiEnv, `ng:///${type.name}/ɵprov.js`, getInjectableMetadata(type, meta));\n                }\n                return ngInjectableDef;\n            },\n        });\n    }\n    // if NG_FACTORY_DEF is already defined on this class then don't overwrite it\n    if (!type.hasOwnProperty(NG_FACTORY_DEF)) {\n        Object.defineProperty(type, NG_FACTORY_DEF, {\n            get: () => {\n                if (ngFactoryDef === null) {\n                    const compiler = getCompilerFacade({ usage: 0 /* JitCompilerUsage.Decorator */, kind: 'injectable', type });\n                    ngFactoryDef = compiler.compileFactory(angularCoreDiEnv, `ng:///${type.name}/ɵfac.js`, {\n                        name: type.name,\n                        type,\n                        typeArgumentCount: 0,\n                        deps: reflectDependencies(type),\n                        target: compiler.FactoryTarget.Injectable\n                    });\n                }\n                return ngFactoryDef;\n            },\n            // Leave this configurable so that the factories from directives or pipes can take precedence.\n            configurable: true\n        });\n    }\n}\nconst USE_VALUE = getClosureSafeProperty({ provide: String, useValue: getClosureSafeProperty });\nfunction isUseClassProvider(meta) {\n    return meta.useClass !== undefined;\n}\nfunction isUseValueProvider(meta) {\n    return USE_VALUE in meta;\n}\nfunction isUseFactoryProvider(meta) {\n    return meta.useFactory !== undefined;\n}\nfunction isUseExistingProvider(meta) {\n    return meta.useExisting !== undefined;\n}\nfunction getInjectableMetadata(type, srcMeta) {\n    // Allow the compilation of a class with a `@Injectable()` decorator without parameters\n    const meta = srcMeta || { providedIn: null };\n    const compilerMeta = {\n        name: type.name,\n        type: type,\n        typeArgumentCount: 0,\n        providedIn: meta.providedIn,\n    };\n    if ((isUseClassProvider(meta) || isUseFactoryProvider(meta)) && meta.deps !== undefined) {\n        compilerMeta.deps = convertDependencies(meta.deps);\n    }\n    // Check to see if the user explicitly provided a `useXxxx` property.\n    if (isUseClassProvider(meta)) {\n        compilerMeta.useClass = meta.useClass;\n    }\n    else if (isUseValueProvider(meta)) {\n        compilerMeta.useValue = meta.useValue;\n    }\n    else if (isUseFactoryProvider(meta)) {\n        compilerMeta.useFactory = meta.useFactory;\n    }\n    else if (isUseExistingProvider(meta)) {\n        compilerMeta.useExisting = meta.useExisting;\n    }\n    return compilerMeta;\n}\n\n/**\n * Injectable decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nconst Injectable = makeDecorator('Injectable', undefined, undefined, undefined, (type, meta) => compileInjectable(type, meta));\n\n/**\n * Create a new `Injector` which is configured using a `defType` of `InjectorType<any>`s.\n *\n * @publicApi\n */\nfunction createInjector(defType, parent = null, additionalProviders = null, name) {\n    const injector = createInjectorWithoutInjectorInstances(defType, parent, additionalProviders, name);\n    injector.resolveInjectorInitializers();\n    return injector;\n}\n/**\n * Creates a new injector without eagerly resolving its injector types. Can be used in places\n * where resolving the injector types immediately can lead to an infinite loop. The injector types\n * should be resolved at a later point by calling `_resolveInjectorDefTypes`.\n */\nfunction createInjectorWithoutInjectorInstances(defType, parent = null, additionalProviders = null, name, scopes = new Set()) {\n    const providers = [\n        additionalProviders || EMPTY_ARRAY,\n        importProvidersFrom(defType),\n    ];\n    name = name || (typeof defType === 'object' ? undefined : stringify(defType));\n    return new R3Injector(providers, parent || getNullInjector(), name || null, scopes);\n}\n\n/**\n * Concrete injectors implement this interface. Injectors are configured\n * with [providers](guide/glossary#provider) that associate\n * dependencies of various types with [injection tokens](guide/glossary#di-token).\n *\n * @see [\"DI Providers\"](guide/dependency-injection-providers).\n * @see `StaticProvider`\n *\n * @usageNotes\n *\n *  The following example creates a service injector instance.\n *\n * {@example core/di/ts/provider_spec.ts region='ConstructorProvider'}\n *\n * ### Usage example\n *\n * {@example core/di/ts/injector_spec.ts region='Injector'}\n *\n * `Injector` returns itself when given `Injector` as a token:\n *\n * {@example core/di/ts/injector_spec.ts region='injectInjector'}\n *\n * @publicApi\n */\nclass Injector {\n    static create(options, parent) {\n        if (Array.isArray(options)) {\n            return createInjector({ name: '' }, parent, options, '');\n        }\n        else {\n            const name = options.name ?? '';\n            return createInjector({ name }, options.parent, options.providers, name);\n        }\n    }\n}\nInjector.THROW_IF_NOT_FOUND = THROW_IF_NOT_FOUND;\nInjector.NULL = ( /* @__PURE__ */new NullInjector());\n/** @nocollapse */\nInjector.ɵprov = ɵɵdefineInjectable({\n    token: Injector,\n    providedIn: 'any',\n    factory: () => ɵɵinject(INJECTOR),\n});\n/**\n * @internal\n * @nocollapse\n */\nInjector.__NG_ELEMENT_ID__ = -1 /* InjectorMarkers.Injector */;\n\nfunction findFirstClosedCycle(keys) {\n    const res = [];\n    for (let i = 0; i < keys.length; ++i) {\n        if (res.indexOf(keys[i]) > -1) {\n            res.push(keys[i]);\n            return res;\n        }\n        res.push(keys[i]);\n    }\n    return res;\n}\nfunction constructResolvingPath(keys) {\n    if (keys.length > 1) {\n        const reversed = findFirstClosedCycle(keys.slice().reverse());\n        const tokenStrs = reversed.map(k => stringify(k.token));\n        return ' (' + tokenStrs.join(' -> ') + ')';\n    }\n    return '';\n}\nfunction injectionError(injector, key, constructResolvingMessage, originalError) {\n    const keys = [key];\n    const errMsg = constructResolvingMessage(keys);\n    const error = (originalError ? wrappedError(errMsg, originalError) : Error(errMsg));\n    error.addKey = addKey;\n    error.keys = keys;\n    error.injectors = [injector];\n    error.constructResolvingMessage = constructResolvingMessage;\n    error[ERROR_ORIGINAL_ERROR] = originalError;\n    return error;\n}\nfunction addKey(injector, key) {\n    this.injectors.push(injector);\n    this.keys.push(key);\n    // Note: This updated message won't be reflected in the `.stack` property\n    this.message = this.constructResolvingMessage(this.keys);\n}\n/**\n * Thrown when trying to retrieve a dependency by key from {@link Injector}, but the\n * {@link Injector} does not have a {@link Provider} for the given key.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * class A {\n *   constructor(b:B) {}\n * }\n *\n * expect(() => Injector.resolveAndCreate([A])).toThrowError();\n * ```\n */\nfunction noProviderError(injector, key) {\n    return injectionError(injector, key, function (keys) {\n        const first = stringify(keys[0].token);\n        return `No provider for ${first}!${constructResolvingPath(keys)}`;\n    });\n}\n/**\n * Thrown when dependencies form a cycle.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * var injector = Injector.resolveAndCreate([\n *   {provide: \"one\", useFactory: (two) => \"two\", deps: [[new Inject(\"two\")]]},\n *   {provide: \"two\", useFactory: (one) => \"one\", deps: [[new Inject(\"one\")]]}\n * ]);\n *\n * expect(() => injector.get(\"one\")).toThrowError();\n * ```\n *\n * Retrieving `A` or `B` throws a `CyclicDependencyError` as the graph above cannot be constructed.\n */\nfunction cyclicDependencyError(injector, key) {\n    return injectionError(injector, key, function (keys) {\n        return `Cannot instantiate cyclic dependency!${constructResolvingPath(keys)}`;\n    });\n}\n/**\n * Thrown when a constructing type returns with an Error.\n *\n * The `InstantiationError` class contains the original error plus the dependency graph which caused\n * this object to be instantiated.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * class A {\n *   constructor() {\n *     throw new Error('message');\n *   }\n * }\n *\n * var injector = Injector.resolveAndCreate([A]);\n\n * try {\n *   injector.get(A);\n * } catch (e) {\n *   expect(e instanceof InstantiationError).toBe(true);\n *   expect(e.originalException.message).toEqual(\"message\");\n *   expect(e.originalStack).toBeDefined();\n * }\n * ```\n */\nfunction instantiationError(injector, originalException, originalStack, key) {\n    return injectionError(injector, key, function (keys) {\n        const first = stringify(keys[0].token);\n        return `${originalException.message}: Error during instantiation of ${first}!${constructResolvingPath(keys)}.`;\n    }, originalException);\n}\n/**\n * Thrown when an object other then {@link Provider} (or `Type`) is passed to {@link Injector}\n * creation.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * expect(() => Injector.resolveAndCreate([\"not a type\"])).toThrowError();\n * ```\n */\nfunction invalidProviderError(provider) {\n    return Error(`Invalid provider - only instances of Provider and Type are allowed, got: ${provider}`);\n}\n/**\n * Thrown when the class has no annotation information.\n *\n * Lack of annotation information prevents the {@link Injector} from determining which dependencies\n * need to be injected into the constructor.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * class A {\n *   constructor(b) {}\n * }\n *\n * expect(() => Injector.resolveAndCreate([A])).toThrowError();\n * ```\n *\n * This error is also thrown when the class not marked with {@link Injectable} has parameter types.\n *\n * ```typescript\n * class B {}\n *\n * class A {\n *   constructor(b:B) {} // no information about the parameter types of A is available at runtime.\n * }\n *\n * expect(() => Injector.resolveAndCreate([A,B])).toThrowError();\n * ```\n *\n */\nfunction noAnnotationError(typeOrFunc, params) {\n    const signature = [];\n    for (let i = 0, ii = params.length; i < ii; i++) {\n        const parameter = params[i];\n        if (!parameter || parameter.length == 0) {\n            signature.push('?');\n        }\n        else {\n            signature.push(parameter.map(stringify).join(' '));\n        }\n    }\n    return Error('Cannot resolve all parameters for \\'' + stringify(typeOrFunc) + '\\'(' +\n        signature.join(', ') + '). ' +\n        'Make sure that all the parameters are decorated with Inject or have valid type annotations and that \\'' +\n        stringify(typeOrFunc) + '\\' is decorated with Injectable.');\n}\n/**\n * Thrown when getting an object by index.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * class A {}\n *\n * var injector = Injector.resolveAndCreate([A]);\n *\n * expect(() => injector.getAt(100)).toThrowError();\n * ```\n *\n */\nfunction outOfBoundsError(index) {\n    return Error(`Index ${index} is out-of-bounds.`);\n}\n// TODO: add a working example after alpha38 is released\n/**\n * Thrown when a multi provider and a regular provider are bound to the same token.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * expect(() => Injector.resolveAndCreate([\n *   { provide: \"Strings\", useValue: \"string1\", multi: true},\n *   { provide: \"Strings\", useValue: \"string2\", multi: false}\n * ])).toThrowError();\n * ```\n */\nfunction mixingMultiProvidersWithRegularProvidersError(provider1, provider2) {\n    return Error(`Cannot mix multi providers and regular providers, got: ${provider1} ${provider2}`);\n}\n\n/**\n * A unique object used for retrieving items from the {@link ReflectiveInjector}.\n *\n * Keys have:\n * - a system-wide unique `id`.\n * - a `token`.\n *\n * `Key` is used internally by {@link ReflectiveInjector} because its system-wide unique `id` allows\n * the\n * injector to store created objects in a more efficient way.\n *\n * `Key` should not be created directly. {@link ReflectiveInjector} creates keys automatically when\n * resolving\n * providers.\n *\n * @deprecated No replacement\n * @publicApi\n */\nclass ReflectiveKey {\n    /**\n     * Private\n     */\n    constructor(token, id) {\n        this.token = token;\n        this.id = id;\n        if (!token) {\n            throw new RuntimeError(208 /* RuntimeErrorCode.MISSING_INJECTION_TOKEN */, ngDevMode && 'Token must be defined!');\n        }\n        this.displayName = stringify(this.token);\n    }\n    /**\n     * Retrieves a `Key` for a token.\n     */\n    static get(token) {\n        return _globalKeyRegistry.get(resolveForwardRef(token));\n    }\n    /**\n     * @returns the number of keys registered in the system.\n     */\n    static get numberOfKeys() {\n        return _globalKeyRegistry.numberOfKeys;\n    }\n}\nclass KeyRegistry {\n    constructor() {\n        this._allKeys = new Map();\n    }\n    get(token) {\n        if (token instanceof ReflectiveKey)\n            return token;\n        if (this._allKeys.has(token)) {\n            return this._allKeys.get(token);\n        }\n        const newKey = new ReflectiveKey(token, ReflectiveKey.numberOfKeys);\n        this._allKeys.set(token, newKey);\n        return newKey;\n    }\n    get numberOfKeys() {\n        return this._allKeys.size;\n    }\n}\nconst _globalKeyRegistry = new KeyRegistry();\n\n/**\n * `Dependency` is used by the framework to extend DI.\n * This is internal to Angular and should not be used directly.\n */\nclass ReflectiveDependency {\n    constructor(key, optional, visibility) {\n        this.key = key;\n        this.optional = optional;\n        this.visibility = visibility;\n    }\n    static fromKey(key) {\n        return new ReflectiveDependency(key, false, null);\n    }\n}\nconst _EMPTY_LIST = [];\nclass ResolvedReflectiveProvider_ {\n    constructor(key, resolvedFactories, multiProvider) {\n        this.key = key;\n        this.resolvedFactories = resolvedFactories;\n        this.multiProvider = multiProvider;\n        this.resolvedFactory = this.resolvedFactories[0];\n    }\n}\n/**\n * An internal resolved representation of a factory function created by resolving `Provider`.\n * @publicApi\n */\nclass ResolvedReflectiveFactory {\n    constructor(\n    /**\n     * Factory function which can return an instance of an object represented by a key.\n     */\n    factory, \n    /**\n     * Arguments (dependencies) to the `factory` function.\n     */\n    dependencies) {\n        this.factory = factory;\n        this.dependencies = dependencies;\n    }\n}\n/**\n * Resolve a single provider.\n */\nfunction resolveReflectiveFactory(provider) {\n    let factoryFn;\n    let resolvedDeps;\n    if (provider.useClass) {\n        const useClass = resolveForwardRef(provider.useClass);\n        factoryFn = getReflect().factory(useClass);\n        resolvedDeps = _dependenciesFor(useClass);\n    }\n    else if (provider.useExisting) {\n        factoryFn = (aliasInstance) => aliasInstance;\n        resolvedDeps = [ReflectiveDependency.fromKey(ReflectiveKey.get(provider.useExisting))];\n    }\n    else if (provider.useFactory) {\n        factoryFn = provider.useFactory;\n        resolvedDeps = constructDependencies(provider.useFactory, provider.deps);\n    }\n    else {\n        factoryFn = () => provider.useValue;\n        resolvedDeps = _EMPTY_LIST;\n    }\n    return new ResolvedReflectiveFactory(factoryFn, resolvedDeps);\n}\n/**\n * Converts the `Provider` into `ResolvedProvider`.\n *\n * `Injector` internally only uses `ResolvedProvider`, `Provider` contains convenience provider\n * syntax.\n */\nfunction resolveReflectiveProvider(provider) {\n    return new ResolvedReflectiveProvider_(ReflectiveKey.get(provider.provide), [resolveReflectiveFactory(provider)], provider.multi || false);\n}\n/**\n * Resolve a list of Providers.\n */\nfunction resolveReflectiveProviders(providers) {\n    const normalized = _normalizeProviders(providers, []);\n    const resolved = normalized.map(resolveReflectiveProvider);\n    const resolvedProviderMap = mergeResolvedReflectiveProviders(resolved, new Map());\n    return Array.from(resolvedProviderMap.values());\n}\n/**\n * Merges a list of ResolvedProviders into a list where each key is contained exactly once and\n * multi providers have been merged.\n */\nfunction mergeResolvedReflectiveProviders(providers, normalizedProvidersMap) {\n    for (let i = 0; i < providers.length; i++) {\n        const provider = providers[i];\n        const existing = normalizedProvidersMap.get(provider.key.id);\n        if (existing) {\n            if (provider.multiProvider !== existing.multiProvider) {\n                throw mixingMultiProvidersWithRegularProvidersError(existing, provider);\n            }\n            if (provider.multiProvider) {\n                for (let j = 0; j < provider.resolvedFactories.length; j++) {\n                    existing.resolvedFactories.push(provider.resolvedFactories[j]);\n                }\n            }\n            else {\n                normalizedProvidersMap.set(provider.key.id, provider);\n            }\n        }\n        else {\n            let resolvedProvider;\n            if (provider.multiProvider) {\n                resolvedProvider = new ResolvedReflectiveProvider_(provider.key, provider.resolvedFactories.slice(), provider.multiProvider);\n            }\n            else {\n                resolvedProvider = provider;\n            }\n            normalizedProvidersMap.set(provider.key.id, resolvedProvider);\n        }\n    }\n    return normalizedProvidersMap;\n}\nfunction _normalizeProviders(providers, res) {\n    providers.forEach(b => {\n        if (b instanceof Type) {\n            res.push({ provide: b, useClass: b });\n        }\n        else if (b && typeof b == 'object' && b.provide !== undefined) {\n            res.push(b);\n        }\n        else if (Array.isArray(b)) {\n            _normalizeProviders(b, res);\n        }\n        else {\n            throw invalidProviderError(b);\n        }\n    });\n    return res;\n}\nfunction constructDependencies(typeOrFunc, dependencies) {\n    if (!dependencies) {\n        return _dependenciesFor(typeOrFunc);\n    }\n    else {\n        const params = dependencies.map(t => [t]);\n        return dependencies.map(t => _extractToken(typeOrFunc, t, params));\n    }\n}\nfunction _dependenciesFor(typeOrFunc) {\n    const params = getReflect().parameters(typeOrFunc);\n    if (!params)\n        return [];\n    if (params.some(p => p == null)) {\n        throw noAnnotationError(typeOrFunc, params);\n    }\n    return params.map(p => _extractToken(typeOrFunc, p, params));\n}\nfunction _extractToken(typeOrFunc, metadata, params) {\n    let token = null;\n    let optional = false;\n    if (!Array.isArray(metadata)) {\n        if (metadata instanceof Inject) {\n            return _createDependency(metadata.token, optional, null);\n        }\n        else {\n            return _createDependency(metadata, optional, null);\n        }\n    }\n    let visibility = null;\n    for (let i = 0; i < metadata.length; ++i) {\n        const paramMetadata = metadata[i];\n        if (paramMetadata instanceof Type) {\n            token = paramMetadata;\n        }\n        else if (paramMetadata instanceof Inject) {\n            token = paramMetadata.token;\n        }\n        else if (paramMetadata instanceof Optional) {\n            optional = true;\n        }\n        else if (paramMetadata instanceof Self || paramMetadata instanceof SkipSelf) {\n            visibility = paramMetadata;\n        }\n        else if (paramMetadata instanceof InjectionToken) {\n            token = paramMetadata;\n        }\n    }\n    token = resolveForwardRef(token);\n    if (token != null) {\n        return _createDependency(token, optional, visibility);\n    }\n    else {\n        throw noAnnotationError(typeOrFunc, params);\n    }\n}\nfunction _createDependency(token, optional, visibility) {\n    return new ReflectiveDependency(ReflectiveKey.get(token), optional, visibility);\n}\n\n// Threshold for the dynamic version\nconst UNDEFINED = {};\n/**\n * A ReflectiveDependency injection container used for instantiating objects and resolving\n * dependencies.\n *\n * An `Injector` is a replacement for a `new` operator, which can automatically resolve the\n * constructor dependencies.\n *\n * In typical use, application code asks for the dependencies in the constructor and they are\n * resolved by the `Injector`.\n *\n * @usageNotes\n * ### Example\n *\n * The following example creates an `Injector` configured to create `Engine` and `Car`.\n *\n * ```typescript\n * @Injectable()\n * class Engine {\n * }\n *\n * @Injectable()\n * class Car {\n *   constructor(public engine:Engine) {}\n * }\n *\n * var injector = ReflectiveInjector.resolveAndCreate([Car, Engine]);\n * var car = injector.get(Car);\n * expect(car instanceof Car).toBe(true);\n * expect(car.engine instanceof Engine).toBe(true);\n * ```\n *\n * Notice, we don't use the `new` operator because we explicitly want to have the `Injector`\n * resolve all of the object's dependencies automatically.\n *\n * TODO: delete in v14.\n *\n * @deprecated from v5 - slow and brings in a lot of code, Use `Injector.create` instead.\n * @publicApi\n */\nclass ReflectiveInjector {\n    /**\n     * Turns an array of provider definitions into an array of resolved providers.\n     *\n     * A resolution is a process of flattening multiple nested arrays and converting individual\n     * providers into an array of `ResolvedReflectiveProvider`s.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * ```typescript\n     * @Injectable()\n     * class Engine {\n     * }\n     *\n     * @Injectable()\n     * class Car {\n     *   constructor(public engine:Engine) {}\n     * }\n     *\n     * var providers = ReflectiveInjector.resolve([Car, [[Engine]]]);\n     *\n     * expect(providers.length).toEqual(2);\n     *\n     * expect(providers[0] instanceof ResolvedReflectiveProvider).toBe(true);\n     * expect(providers[0].key.displayName).toBe(\"Car\");\n     * expect(providers[0].dependencies.length).toEqual(1);\n     * expect(providers[0].factory).toBeDefined();\n     *\n     * expect(providers[1].key.displayName).toBe(\"Engine\");\n     * });\n     * ```\n     *\n     */\n    static resolve(providers) {\n        return resolveReflectiveProviders(providers);\n    }\n    /**\n     * Resolves an array of providers and creates an injector from those providers.\n     *\n     * The passed-in providers can be an array of `Type`, `Provider`,\n     * or a recursive array of more providers.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * ```typescript\n     * @Injectable()\n     * class Engine {\n     * }\n     *\n     * @Injectable()\n     * class Car {\n     *   constructor(public engine:Engine) {}\n     * }\n     *\n     * var injector = ReflectiveInjector.resolveAndCreate([Car, Engine]);\n     * expect(injector.get(Car) instanceof Car).toBe(true);\n     * ```\n     */\n    static resolveAndCreate(providers, parent) {\n        const ResolvedReflectiveProviders = ReflectiveInjector.resolve(providers);\n        return ReflectiveInjector.fromResolvedProviders(ResolvedReflectiveProviders, parent);\n    }\n    /**\n     * Creates an injector from previously resolved providers.\n     *\n     * This API is the recommended way to construct injectors in performance-sensitive parts.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * ```typescript\n     * @Injectable()\n     * class Engine {\n     * }\n     *\n     * @Injectable()\n     * class Car {\n     *   constructor(public engine:Engine) {}\n     * }\n     *\n     * var providers = ReflectiveInjector.resolve([Car, Engine]);\n     * var injector = ReflectiveInjector.fromResolvedProviders(providers);\n     * expect(injector.get(Car) instanceof Car).toBe(true);\n     * ```\n     */\n    static fromResolvedProviders(providers, parent) {\n        return new ReflectiveInjector_(providers, parent);\n    }\n}\nclass ReflectiveInjector_ {\n    /**\n     * Private\n     */\n    constructor(_providers, _parent) {\n        /** @internal */\n        this._constructionCounter = 0;\n        this._providers = _providers;\n        this.parent = _parent || null;\n        const len = _providers.length;\n        this.keyIds = [];\n        this.objs = [];\n        for (let i = 0; i < len; i++) {\n            this.keyIds[i] = _providers[i].key.id;\n            this.objs[i] = UNDEFINED;\n        }\n    }\n    get(token, notFoundValue = THROW_IF_NOT_FOUND) {\n        return this._getByKey(ReflectiveKey.get(token), null, notFoundValue);\n    }\n    resolveAndCreateChild(providers) {\n        const ResolvedReflectiveProviders = ReflectiveInjector.resolve(providers);\n        return this.createChildFromResolved(ResolvedReflectiveProviders);\n    }\n    createChildFromResolved(providers) {\n        const inj = new ReflectiveInjector_(providers);\n        inj.parent = this;\n        return inj;\n    }\n    resolveAndInstantiate(provider) {\n        return this.instantiateResolved(ReflectiveInjector.resolve([provider])[0]);\n    }\n    instantiateResolved(provider) {\n        return this._instantiateProvider(provider);\n    }\n    getProviderAtIndex(index) {\n        if (index < 0 || index >= this._providers.length) {\n            throw outOfBoundsError(index);\n        }\n        return this._providers[index];\n    }\n    /** @internal */\n    _new(provider) {\n        if (this._constructionCounter++ > this._getMaxNumberOfObjects()) {\n            throw cyclicDependencyError(this, provider.key);\n        }\n        return this._instantiateProvider(provider);\n    }\n    _getMaxNumberOfObjects() {\n        return this.objs.length;\n    }\n    _instantiateProvider(provider) {\n        if (provider.multiProvider) {\n            const res = [];\n            for (let i = 0; i < provider.resolvedFactories.length; ++i) {\n                res[i] = this._instantiate(provider, provider.resolvedFactories[i]);\n            }\n            return res;\n        }\n        else {\n            return this._instantiate(provider, provider.resolvedFactories[0]);\n        }\n    }\n    _instantiate(provider, ResolvedReflectiveFactory) {\n        const factory = ResolvedReflectiveFactory.factory;\n        let deps;\n        try {\n            deps =\n                ResolvedReflectiveFactory.dependencies.map(dep => this._getByReflectiveDependency(dep));\n        }\n        catch (e) {\n            if (e.addKey) {\n                e.addKey(this, provider.key);\n            }\n            throw e;\n        }\n        let obj;\n        try {\n            obj = factory(...deps);\n        }\n        catch (e) {\n            throw instantiationError(this, e, e.stack, provider.key);\n        }\n        return obj;\n    }\n    _getByReflectiveDependency(dep) {\n        return this._getByKey(dep.key, dep.visibility, dep.optional ? null : THROW_IF_NOT_FOUND);\n    }\n    _getByKey(key, visibility, notFoundValue) {\n        if (key === ReflectiveInjector_.INJECTOR_KEY) {\n            return this;\n        }\n        if (visibility instanceof Self) {\n            return this._getByKeySelf(key, notFoundValue);\n        }\n        else {\n            return this._getByKeyDefault(key, notFoundValue, visibility);\n        }\n    }\n    _getObjByKeyId(keyId) {\n        for (let i = 0; i < this.keyIds.length; i++) {\n            if (this.keyIds[i] === keyId) {\n                if (this.objs[i] === UNDEFINED) {\n                    this.objs[i] = this._new(this._providers[i]);\n                }\n                return this.objs[i];\n            }\n        }\n        return UNDEFINED;\n    }\n    /** @internal */\n    _throwOrNull(key, notFoundValue) {\n        if (notFoundValue !== THROW_IF_NOT_FOUND) {\n            return notFoundValue;\n        }\n        else {\n            throw noProviderError(this, key);\n        }\n    }\n    /** @internal */\n    _getByKeySelf(key, notFoundValue) {\n        const obj = this._getObjByKeyId(key.id);\n        return (obj !== UNDEFINED) ? obj : this._throwOrNull(key, notFoundValue);\n    }\n    /** @internal */\n    _getByKeyDefault(key, notFoundValue, visibility) {\n        let inj;\n        if (visibility instanceof SkipSelf) {\n            inj = this.parent;\n        }\n        else {\n            inj = this;\n        }\n        while (inj instanceof ReflectiveInjector_) {\n            const inj_ = inj;\n            const obj = inj_._getObjByKeyId(key.id);\n            if (obj !== UNDEFINED)\n                return obj;\n            inj = inj_.parent;\n        }\n        if (inj !== null) {\n            return inj.get(key.token, notFoundValue);\n        }\n        else {\n            return this._throwOrNull(key, notFoundValue);\n        }\n    }\n    get displayName() {\n        const providers = _mapProviders(this, (b) => ' \"' + b.key.displayName + '\" ')\n            .join(', ');\n        return `ReflectiveInjector(providers: [${providers}])`;\n    }\n    toString() {\n        return this.displayName;\n    }\n}\nReflectiveInjector_.INJECTOR_KEY = ( /* @__PURE__ */ReflectiveKey.get(Injector));\nfunction _mapProviders(injector, fn) {\n    const res = [];\n    for (let i = 0; i < injector._providers.length; ++i) {\n        res[i] = fn(injector.getProviderAtIndex(i));\n    }\n    return res;\n}\n\n/**\n * @module\n * @description\n * The `di` module provides dependency injection container services.\n */\n\n/**\n * This file should not be necessary because node resolution should just default to `./di/index`!\n *\n * However it does not seem to work and it breaks:\n *  - //packages/animations/browser/test:test_web_chromium-local\n *  - //packages/compiler-cli/test:extract_i18n\n *  - //packages/compiler-cli/test:ngc\n *  - //packages/compiler-cli/test:perform_watch\n *  - //packages/compiler-cli/test/diagnostics:check_types\n *  - //packages/compiler-cli/test/transformers:test\n *  - //packages/compiler/test:test\n *  - //tools/public_api_guard:core_api\n *\n * Remove this file once the above is solved or wait until `ngc` is deleted and then it should be\n * safe to delete this file.\n */\n\nfunction ɵɵdirectiveInject(token, flags = InjectFlags.Default) {\n    const lView = getLView();\n    // Fall back to inject() if view hasn't been created. This situation can happen in tests\n    // if inject utilities are used before bootstrapping.\n    if (lView === null) {\n        // Verify that we will not get into infinite loop.\n        ngDevMode && assertInjectImplementationNotEqual(ɵɵdirectiveInject);\n        return ɵɵinject(token, flags);\n    }\n    const tNode = getCurrentTNode();\n    return getOrCreateInjectable(tNode, lView, resolveForwardRef(token), flags);\n}\n/**\n * Throws an error indicating that a factory function could not be generated by the compiler for a\n * particular class.\n *\n * This instruction allows the actual error message to be optimized away when ngDevMode is turned\n * off, saving bytes of generated code while still providing a good experience in dev mode.\n *\n * The name of the class is not mentioned here, but will be in the generated factory function name\n * and thus in the stack trace.\n *\n * @codeGenApi\n */\nfunction ɵɵinvalidFactory() {\n    const msg = ngDevMode ? `This constructor was not compatible with Dependency Injection.` : 'invalid';\n    throw new Error(msg);\n}\n\n/**\n * Invoke `HostBindingsFunction`s for view.\n *\n * This methods executes `TView.hostBindingOpCodes`. It is used to execute the\n * `HostBindingsFunction`s associated with the current `LView`.\n *\n * @param tView Current `TView`.\n * @param lView Current `LView`.\n */\nfunction processHostBindingOpCodes(tView, lView) {\n    const hostBindingOpCodes = tView.hostBindingOpCodes;\n    if (hostBindingOpCodes === null)\n        return;\n    try {\n        for (let i = 0; i < hostBindingOpCodes.length; i++) {\n            const opCode = hostBindingOpCodes[i];\n            if (opCode < 0) {\n                // Negative numbers are element indexes.\n                setSelectedIndex(~opCode);\n            }\n            else {\n                // Positive numbers are NumberTuple which store bindingRootIndex and directiveIndex.\n                const directiveIdx = opCode;\n                const bindingRootIndx = hostBindingOpCodes[++i];\n                const hostBindingFn = hostBindingOpCodes[++i];\n                setBindingRootForHostBindings(bindingRootIndx, directiveIdx);\n                const context = lView[directiveIdx];\n                hostBindingFn(2 /* RenderFlags.Update */, context);\n            }\n        }\n    }\n    finally {\n        setSelectedIndex(-1);\n    }\n}\n/** Refreshes all content queries declared by directives in a given view */\nfunction refreshContentQueries(tView, lView) {\n    const contentQueries = tView.contentQueries;\n    if (contentQueries !== null) {\n        for (let i = 0; i < contentQueries.length; i += 2) {\n            const queryStartIdx = contentQueries[i];\n            const directiveDefIdx = contentQueries[i + 1];\n            if (directiveDefIdx !== -1) {\n                const directiveDef = tView.data[directiveDefIdx];\n                ngDevMode && assertDefined(directiveDef, 'DirectiveDef not found.');\n                ngDevMode &&\n                    assertDefined(directiveDef.contentQueries, 'contentQueries function should be defined');\n                setCurrentQueryIndex(queryStartIdx);\n                directiveDef.contentQueries(2 /* RenderFlags.Update */, lView[directiveDefIdx], directiveDefIdx);\n            }\n        }\n    }\n}\n/** Refreshes child components in the current view (update mode). */\nfunction refreshChildComponents(hostLView, components) {\n    for (let i = 0; i < components.length; i++) {\n        refreshComponent(hostLView, components[i]);\n    }\n}\n/** Renders child components in the current view (creation mode). */\nfunction renderChildComponents(hostLView, components) {\n    for (let i = 0; i < components.length; i++) {\n        renderComponent(hostLView, components[i]);\n    }\n}\nfunction createLView(parentLView, tView, context, flags, host, tHostNode, rendererFactory, renderer, sanitizer, injector, embeddedViewInjector) {\n    const lView = tView.blueprint.slice();\n    lView[HOST] = host;\n    lView[FLAGS] = flags | 4 /* LViewFlags.CreationMode */ | 64 /* LViewFlags.Attached */ | 8 /* LViewFlags.FirstLViewPass */;\n    if (embeddedViewInjector !== null ||\n        (parentLView && (parentLView[FLAGS] & 1024 /* LViewFlags.HasEmbeddedViewInjector */))) {\n        lView[FLAGS] |= 1024 /* LViewFlags.HasEmbeddedViewInjector */;\n    }\n    resetPreOrderHookFlags(lView);\n    ngDevMode && tView.declTNode && parentLView && assertTNodeForLView(tView.declTNode, parentLView);\n    lView[PARENT] = lView[DECLARATION_VIEW] = parentLView;\n    lView[CONTEXT] = context;\n    lView[RENDERER_FACTORY] = (rendererFactory || parentLView && parentLView[RENDERER_FACTORY]);\n    ngDevMode && assertDefined(lView[RENDERER_FACTORY], 'RendererFactory is required');\n    lView[RENDERER] = (renderer || parentLView && parentLView[RENDERER]);\n    ngDevMode && assertDefined(lView[RENDERER], 'Renderer is required');\n    lView[SANITIZER] = sanitizer || parentLView && parentLView[SANITIZER] || null;\n    lView[INJECTOR$1] = injector || parentLView && parentLView[INJECTOR$1] || null;\n    lView[T_HOST] = tHostNode;\n    lView[ID] = getUniqueLViewId();\n    lView[EMBEDDED_VIEW_INJECTOR] = embeddedViewInjector;\n    ngDevMode &&\n        assertEqual(tView.type == 2 /* TViewType.Embedded */ ? parentLView !== null : true, true, 'Embedded views must have parentLView');\n    lView[DECLARATION_COMPONENT_VIEW] =\n        tView.type == 2 /* TViewType.Embedded */ ? parentLView[DECLARATION_COMPONENT_VIEW] : lView;\n    return lView;\n}\nfunction getOrCreateTNode(tView, index, type, name, attrs) {\n    ngDevMode && index !== 0 && // 0 are bogus nodes and they are OK. See `createContainerRef` in\n        // `view_engine_compatibility` for additional context.\n        assertGreaterThanOrEqual(index, HEADER_OFFSET, 'TNodes can\\'t be in the LView header.');\n    // Keep this function short, so that the VM will inline it.\n    ngDevMode && assertPureTNodeType(type);\n    let tNode = tView.data[index];\n    if (tNode === null) {\n        tNode = createTNodeAtIndex(tView, index, type, name, attrs);\n        if (isInI18nBlock()) {\n            // If we are in i18n block then all elements should be pre declared through `Placeholder`\n            // See `TNodeType.Placeholder` and `LFrame.inI18n` for more context.\n            // If the `TNode` was not pre-declared than it means it was not mentioned which means it was\n            // removed, so we mark it as detached.\n            tNode.flags |= 32 /* TNodeFlags.isDetached */;\n        }\n    }\n    else if (tNode.type & 64 /* TNodeType.Placeholder */) {\n        tNode.type = type;\n        tNode.value = name;\n        tNode.attrs = attrs;\n        const parent = getCurrentParentTNode();\n        tNode.injectorIndex = parent === null ? -1 : parent.injectorIndex;\n        ngDevMode && assertTNodeForTView(tNode, tView);\n        ngDevMode && assertEqual(index, tNode.index, 'Expecting same index');\n    }\n    setCurrentTNode(tNode, true);\n    return tNode;\n}\nfunction createTNodeAtIndex(tView, index, type, name, attrs) {\n    const currentTNode = getCurrentTNodePlaceholderOk();\n    const isParent = isCurrentTNodeParent();\n    const parent = isParent ? currentTNode : currentTNode && currentTNode.parent;\n    // Parents cannot cross component boundaries because components will be used in multiple places.\n    const tNode = tView.data[index] =\n        createTNode(tView, parent, type, index, name, attrs);\n    // Assign a pointer to the first child node of a given view. The first node is not always the one\n    // at index 0, in case of i18n, index 0 can be the instruction `i18nStart` and the first node has\n    // the index 1 or more, so we can't just check node index.\n    if (tView.firstChild === null) {\n        tView.firstChild = tNode;\n    }\n    if (currentTNode !== null) {\n        if (isParent) {\n            // FIXME(misko): This logic looks unnecessarily complicated. Could we simplify?\n            if (currentTNode.child == null && tNode.parent !== null) {\n                // We are in the same view, which means we are adding content node to the parent view.\n                currentTNode.child = tNode;\n            }\n        }\n        else {\n            if (currentTNode.next === null) {\n                // In the case of i18n the `currentTNode` may already be linked, in which case we don't want\n                // to break the links which i18n created.\n                currentTNode.next = tNode;\n                tNode.prev = currentTNode;\n            }\n        }\n    }\n    return tNode;\n}\n/**\n * When elements are created dynamically after a view blueprint is created (e.g. through\n * i18nApply()), we need to adjust the blueprint for future\n * template passes.\n *\n * @param tView `TView` associated with `LView`\n * @param lView The `LView` containing the blueprint to adjust\n * @param numSlotsToAlloc The number of slots to alloc in the LView, should be >0\n * @param initialValue Initial value to store in blueprint\n */\nfunction allocExpando(tView, lView, numSlotsToAlloc, initialValue) {\n    if (numSlotsToAlloc === 0)\n        return -1;\n    if (ngDevMode) {\n        assertFirstCreatePass(tView);\n        assertSame(tView, lView[TVIEW], '`LView` must be associated with `TView`!');\n        assertEqual(tView.data.length, lView.length, 'Expecting LView to be same size as TView');\n        assertEqual(tView.data.length, tView.blueprint.length, 'Expecting Blueprint to be same size as TView');\n        assertFirstUpdatePass(tView);\n    }\n    const allocIdx = lView.length;\n    for (let i = 0; i < numSlotsToAlloc; i++) {\n        lView.push(initialValue);\n        tView.blueprint.push(initialValue);\n        tView.data.push(null);\n    }\n    return allocIdx;\n}\n//////////////////////////\n//// Render\n//////////////////////////\n/**\n * Processes a view in the creation mode. This includes a number of steps in a specific order:\n * - creating view query functions (if any);\n * - executing a template function in the creation mode;\n * - updating static queries (if any);\n * - creating child components defined in a given view.\n */\nfunction renderView(tView, lView, context) {\n    ngDevMode && assertEqual(isCreationMode(lView), true, 'Should be run in creation mode');\n    enterView(lView);\n    try {\n        const viewQuery = tView.viewQuery;\n        if (viewQuery !== null) {\n            executeViewQueryFn(1 /* RenderFlags.Create */, viewQuery, context);\n        }\n        // Execute a template associated with this view, if it exists. A template function might not be\n        // defined for the root component views.\n        const templateFn = tView.template;\n        if (templateFn !== null) {\n            executeTemplate(tView, lView, templateFn, 1 /* RenderFlags.Create */, context);\n        }\n        // This needs to be set before children are processed to support recursive components.\n        // This must be set to false immediately after the first creation run because in an\n        // ngFor loop, all the views will be created together before update mode runs and turns\n        // off firstCreatePass. If we don't set it here, instances will perform directive\n        // matching, etc again and again.\n        if (tView.firstCreatePass) {\n            tView.firstCreatePass = false;\n        }\n        // We resolve content queries specifically marked as `static` in creation mode. Dynamic\n        // content queries are resolved during change detection (i.e. update mode), after embedded\n        // views are refreshed (see block above).\n        if (tView.staticContentQueries) {\n            refreshContentQueries(tView, lView);\n        }\n        // We must materialize query results before child components are processed\n        // in case a child component has projected a container. The LContainer needs\n        // to exist so the embedded views are properly attached by the container.\n        if (tView.staticViewQueries) {\n            executeViewQueryFn(2 /* RenderFlags.Update */, tView.viewQuery, context);\n        }\n        // Render child component views.\n        const components = tView.components;\n        if (components !== null) {\n            renderChildComponents(lView, components);\n        }\n    }\n    catch (error) {\n        // If we didn't manage to get past the first template pass due to\n        // an error, mark the view as corrupted so we can try to recover.\n        if (tView.firstCreatePass) {\n            tView.incompleteFirstPass = true;\n            tView.firstCreatePass = false;\n        }\n        throw error;\n    }\n    finally {\n        lView[FLAGS] &= ~4 /* LViewFlags.CreationMode */;\n        leaveView();\n    }\n}\n/**\n * Processes a view in update mode. This includes a number of steps in a specific order:\n * - executing a template function in update mode;\n * - executing hooks;\n * - refreshing queries;\n * - setting host bindings;\n * - refreshing child (embedded and component) views.\n */\nfunction refreshView(tView, lView, templateFn, context) {\n    ngDevMode && assertEqual(isCreationMode(lView), false, 'Should be run in update mode');\n    const flags = lView[FLAGS];\n    if ((flags & 128 /* LViewFlags.Destroyed */) === 128 /* LViewFlags.Destroyed */)\n        return;\n    enterView(lView);\n    // Check no changes mode is a dev only mode used to verify that bindings have not changed\n    // since they were assigned. We do not want to execute lifecycle hooks in that mode.\n    const isInCheckNoChangesPass = ngDevMode && isInCheckNoChangesMode();\n    try {\n        resetPreOrderHookFlags(lView);\n        setBindingIndex(tView.bindingStartIndex);\n        if (templateFn !== null) {\n            executeTemplate(tView, lView, templateFn, 2 /* RenderFlags.Update */, context);\n        }\n        const hooksInitPhaseCompleted = (flags & 3 /* LViewFlags.InitPhaseStateMask */) === 3 /* InitPhaseState.InitPhaseCompleted */;\n        // execute pre-order hooks (OnInit, OnChanges, DoCheck)\n        // PERF WARNING: do NOT extract this to a separate function without running benchmarks\n        if (!isInCheckNoChangesPass) {\n            if (hooksInitPhaseCompleted) {\n                const preOrderCheckHooks = tView.preOrderCheckHooks;\n                if (preOrderCheckHooks !== null) {\n                    executeCheckHooks(lView, preOrderCheckHooks, null);\n                }\n            }\n            else {\n                const preOrderHooks = tView.preOrderHooks;\n                if (preOrderHooks !== null) {\n                    executeInitAndCheckHooks(lView, preOrderHooks, 0 /* InitPhaseState.OnInitHooksToBeRun */, null);\n                }\n                incrementInitPhaseFlags(lView, 0 /* InitPhaseState.OnInitHooksToBeRun */);\n            }\n        }\n        // First mark transplanted views that are declared in this lView as needing a refresh at their\n        // insertion points. This is needed to avoid the situation where the template is defined in this\n        // `LView` but its declaration appears after the insertion component.\n        markTransplantedViewsForRefresh(lView);\n        refreshEmbeddedViews(lView);\n        // Content query results must be refreshed before content hooks are called.\n        if (tView.contentQueries !== null) {\n            refreshContentQueries(tView, lView);\n        }\n        // execute content hooks (AfterContentInit, AfterContentChecked)\n        // PERF WARNING: do NOT extract this to a separate function without running benchmarks\n        if (!isInCheckNoChangesPass) {\n            if (hooksInitPhaseCompleted) {\n                const contentCheckHooks = tView.contentCheckHooks;\n                if (contentCheckHooks !== null) {\n                    executeCheckHooks(lView, contentCheckHooks);\n                }\n            }\n            else {\n                const contentHooks = tView.contentHooks;\n                if (contentHooks !== null) {\n                    executeInitAndCheckHooks(lView, contentHooks, 1 /* InitPhaseState.AfterContentInitHooksToBeRun */);\n                }\n                incrementInitPhaseFlags(lView, 1 /* InitPhaseState.AfterContentInitHooksToBeRun */);\n            }\n        }\n        processHostBindingOpCodes(tView, lView);\n        // Refresh child component views.\n        const components = tView.components;\n        if (components !== null) {\n            refreshChildComponents(lView, components);\n        }\n        // View queries must execute after refreshing child components because a template in this view\n        // could be inserted in a child component. If the view query executes before child component\n        // refresh, the template might not yet be inserted.\n        const viewQuery = tView.viewQuery;\n        if (viewQuery !== null) {\n            executeViewQueryFn(2 /* RenderFlags.Update */, viewQuery, context);\n        }\n        // execute view hooks (AfterViewInit, AfterViewChecked)\n        // PERF WARNING: do NOT extract this to a separate function without running benchmarks\n        if (!isInCheckNoChangesPass) {\n            if (hooksInitPhaseCompleted) {\n                const viewCheckHooks = tView.viewCheckHooks;\n                if (viewCheckHooks !== null) {\n                    executeCheckHooks(lView, viewCheckHooks);\n                }\n            }\n            else {\n                const viewHooks = tView.viewHooks;\n                if (viewHooks !== null) {\n                    executeInitAndCheckHooks(lView, viewHooks, 2 /* InitPhaseState.AfterViewInitHooksToBeRun */);\n                }\n                incrementInitPhaseFlags(lView, 2 /* InitPhaseState.AfterViewInitHooksToBeRun */);\n            }\n        }\n        if (tView.firstUpdatePass === true) {\n            // We need to make sure that we only flip the flag on successful `refreshView` only\n            // Don't do this in `finally` block.\n            // If we did this in `finally` block then an exception could block the execution of styling\n            // instructions which in turn would be unable to insert themselves into the styling linked\n            // list. The result of this would be that if the exception would not be throw on subsequent CD\n            // the styling would be unable to process it data and reflect to the DOM.\n            tView.firstUpdatePass = false;\n        }\n        // Do not reset the dirty state when running in check no changes mode. We don't want components\n        // to behave differently depending on whether check no changes is enabled or not. For example:\n        // Marking an OnPush component as dirty from within the `ngAfterViewInit` hook in order to\n        // refresh a `NgClass` binding should work. If we would reset the dirty state in the check\n        // no changes cycle, the component would be not be dirty for the next update pass. This would\n        // be different in production mode where the component dirty state is not reset.\n        if (!isInCheckNoChangesPass) {\n            lView[FLAGS] &= ~(32 /* LViewFlags.Dirty */ | 8 /* LViewFlags.FirstLViewPass */);\n        }\n        if (lView[FLAGS] & 512 /* LViewFlags.RefreshTransplantedView */) {\n            lView[FLAGS] &= ~512 /* LViewFlags.RefreshTransplantedView */;\n            updateTransplantedViewCount(lView[PARENT], -1);\n        }\n    }\n    finally {\n        leaveView();\n    }\n}\nfunction executeTemplate(tView, lView, templateFn, rf, context) {\n    const prevSelectedIndex = getSelectedIndex();\n    const isUpdatePhase = rf & 2 /* RenderFlags.Update */;\n    try {\n        setSelectedIndex(-1);\n        if (isUpdatePhase && lView.length > HEADER_OFFSET) {\n            // When we're updating, inherently select 0 so we don't\n            // have to generate that instruction for most update blocks.\n            selectIndexInternal(tView, lView, HEADER_OFFSET, !!ngDevMode && isInCheckNoChangesMode());\n        }\n        const preHookType = isUpdatePhase ? 2 /* ProfilerEvent.TemplateUpdateStart */ : 0 /* ProfilerEvent.TemplateCreateStart */;\n        profiler(preHookType, context);\n        templateFn(rf, context);\n    }\n    finally {\n        setSelectedIndex(prevSelectedIndex);\n        const postHookType = isUpdatePhase ? 3 /* ProfilerEvent.TemplateUpdateEnd */ : 1 /* ProfilerEvent.TemplateCreateEnd */;\n        profiler(postHookType, context);\n    }\n}\n//////////////////////////\n//// Element\n//////////////////////////\nfunction executeContentQueries(tView, tNode, lView) {\n    if (isContentQueryHost(tNode)) {\n        const start = tNode.directiveStart;\n        const end = tNode.directiveEnd;\n        for (let directiveIndex = start; directiveIndex < end; directiveIndex++) {\n            const def = tView.data[directiveIndex];\n            if (def.contentQueries) {\n                def.contentQueries(1 /* RenderFlags.Create */, lView[directiveIndex], directiveIndex);\n            }\n        }\n    }\n}\n/**\n * Creates directive instances.\n */\nfunction createDirectivesInstances(tView, lView, tNode) {\n    if (!getBindingsEnabled())\n        return;\n    instantiateAllDirectives(tView, lView, tNode, getNativeByTNode(tNode, lView));\n    if ((tNode.flags & 64 /* TNodeFlags.hasHostBindings */) === 64 /* TNodeFlags.hasHostBindings */) {\n        invokeDirectivesHostBindings(tView, lView, tNode);\n    }\n}\n/**\n * Takes a list of local names and indices and pushes the resolved local variable values\n * to LView in the same order as they are loaded in the template with load().\n */\nfunction saveResolvedLocalsInData(viewData, tNode, localRefExtractor = getNativeByTNode) {\n    const localNames = tNode.localNames;\n    if (localNames !== null) {\n        let localIndex = tNode.index + 1;\n        for (let i = 0; i < localNames.length; i += 2) {\n            const index = localNames[i + 1];\n            const value = index === -1 ?\n                localRefExtractor(tNode, viewData) :\n                viewData[index];\n            viewData[localIndex++] = value;\n        }\n    }\n}\n/**\n * Gets TView from a template function or creates a new TView\n * if it doesn't already exist.\n *\n * @param def ComponentDef\n * @returns TView\n */\nfunction getOrCreateComponentTView(def) {\n    const tView = def.tView;\n    // Create a TView if there isn't one, or recreate it if the first create pass didn't\n    // complete successfully since we can't know for sure whether it's in a usable shape.\n    if (tView === null || tView.incompleteFirstPass) {\n        // Declaration node here is null since this function is called when we dynamically create a\n        // component and hence there is no declaration.\n        const declTNode = null;\n        return def.tView = createTView(1 /* TViewType.Component */, declTNode, def.template, def.decls, def.vars, def.directiveDefs, def.pipeDefs, def.viewQuery, def.schemas, def.consts);\n    }\n    return tView;\n}\n/**\n * Creates a TView instance\n *\n * @param type Type of `TView`.\n * @param declTNode Declaration location of this `TView`.\n * @param templateFn Template function\n * @param decls The number of nodes, local refs, and pipes in this template\n * @param directives Registry of directives for this view\n * @param pipes Registry of pipes for this view\n * @param viewQuery View queries for this view\n * @param schemas Schemas for this view\n * @param consts Constants for this view\n */\nfunction createTView(type, declTNode, templateFn, decls, vars, directives, pipes, viewQuery, schemas, constsOrFactory) {\n    ngDevMode && ngDevMode.tView++;\n    const bindingStartIndex = HEADER_OFFSET + decls;\n    // This length does not yet contain host bindings from child directives because at this point,\n    // we don't know which directives are active on this template. As soon as a directive is matched\n    // that has a host binding, we will update the blueprint with that def's hostVars count.\n    const initialViewLength = bindingStartIndex + vars;\n    const blueprint = createViewBlueprint(bindingStartIndex, initialViewLength);\n    const consts = typeof constsOrFactory === 'function' ? constsOrFactory() : constsOrFactory;\n    const tView = blueprint[TVIEW] = {\n        type: type,\n        blueprint: blueprint,\n        template: templateFn,\n        queries: null,\n        viewQuery: viewQuery,\n        declTNode: declTNode,\n        data: blueprint.slice().fill(null, bindingStartIndex),\n        bindingStartIndex: bindingStartIndex,\n        expandoStartIndex: initialViewLength,\n        hostBindingOpCodes: null,\n        firstCreatePass: true,\n        firstUpdatePass: true,\n        staticViewQueries: false,\n        staticContentQueries: false,\n        preOrderHooks: null,\n        preOrderCheckHooks: null,\n        contentHooks: null,\n        contentCheckHooks: null,\n        viewHooks: null,\n        viewCheckHooks: null,\n        destroyHooks: null,\n        cleanup: null,\n        contentQueries: null,\n        components: null,\n        directiveRegistry: typeof directives === 'function' ? directives() : directives,\n        pipeRegistry: typeof pipes === 'function' ? pipes() : pipes,\n        firstChild: null,\n        schemas: schemas,\n        consts: consts,\n        incompleteFirstPass: false\n    };\n    if (ngDevMode) {\n        // For performance reasons it is important that the tView retains the same shape during runtime.\n        // (To make sure that all of the code is monomorphic.) For this reason we seal the object to\n        // prevent class transitions.\n        Object.seal(tView);\n    }\n    return tView;\n}\nfunction createViewBlueprint(bindingStartIndex, initialViewLength) {\n    const blueprint = [];\n    for (let i = 0; i < initialViewLength; i++) {\n        blueprint.push(i < bindingStartIndex ? null : NO_CHANGE);\n    }\n    return blueprint;\n}\n/**\n * Locates the host native element, used for bootstrapping existing nodes into rendering pipeline.\n *\n * @param rendererFactory Factory function to create renderer instance.\n * @param elementOrSelector Render element or CSS selector to locate the element.\n * @param encapsulation View Encapsulation defined for component that requests host element.\n */\nfunction locateHostElement(renderer, elementOrSelector, encapsulation) {\n    // When using native Shadow DOM, do not clear host element to allow native slot projection\n    const preserveContent = encapsulation === ViewEncapsulation$1.ShadowDom;\n    return renderer.selectRootElement(elementOrSelector, preserveContent);\n}\n/**\n * Saves context for this cleanup function in LView.cleanupInstances.\n *\n * On the first template pass, saves in TView:\n * - Cleanup function\n * - Index of context we just saved in LView.cleanupInstances\n *\n * This function can also be used to store instance specific cleanup fns. In that case the `context`\n * is `null` and the function is store in `LView` (rather than it `TView`).\n */\nfunction storeCleanupWithContext(tView, lView, context, cleanupFn) {\n    const lCleanup = getOrCreateLViewCleanup(lView);\n    if (context === null) {\n        // If context is null that this is instance specific callback. These callbacks can only be\n        // inserted after template shared instances. For this reason in ngDevMode we freeze the TView.\n        if (ngDevMode) {\n            Object.freeze(getOrCreateTViewCleanup(tView));\n        }\n        lCleanup.push(cleanupFn);\n    }\n    else {\n        lCleanup.push(context);\n        if (tView.firstCreatePass) {\n            getOrCreateTViewCleanup(tView).push(cleanupFn, lCleanup.length - 1);\n        }\n    }\n}\nfunction createTNode(tView, tParent, type, index, value, attrs) {\n    ngDevMode && index !== 0 && // 0 are bogus nodes and they are OK. See `createContainerRef` in\n        // `view_engine_compatibility` for additional context.\n        assertGreaterThanOrEqual(index, HEADER_OFFSET, 'TNodes can\\'t be in the LView header.');\n    ngDevMode && assertNotSame(attrs, undefined, '\\'undefined\\' is not valid value for \\'attrs\\'');\n    ngDevMode && ngDevMode.tNode++;\n    ngDevMode && tParent && assertTNodeForTView(tParent, tView);\n    let injectorIndex = tParent ? tParent.injectorIndex : -1;\n    const tNode = {\n        type,\n        index,\n        insertBeforeIndex: null,\n        injectorIndex,\n        directiveStart: -1,\n        directiveEnd: -1,\n        directiveStylingLast: -1,\n        componentOffset: -1,\n        propertyBindings: null,\n        flags: 0,\n        providerIndexes: 0,\n        value: value,\n        attrs: attrs,\n        mergedAttrs: null,\n        localNames: null,\n        initialInputs: undefined,\n        inputs: null,\n        outputs: null,\n        tView: null,\n        next: null,\n        prev: null,\n        projectionNext: null,\n        child: null,\n        parent: tParent,\n        projection: null,\n        styles: null,\n        stylesWithoutHost: null,\n        residualStyles: undefined,\n        classes: null,\n        classesWithoutHost: null,\n        residualClasses: undefined,\n        classBindings: 0,\n        styleBindings: 0,\n    };\n    if (ngDevMode) {\n        // For performance reasons it is important that the tNode retains the same shape during runtime.\n        // (To make sure that all of the code is monomorphic.) For this reason we seal the object to\n        // prevent class transitions.\n        Object.seal(tNode);\n    }\n    return tNode;\n}\n/**\n * Generates the `PropertyAliases` data structure from the provided input/output mapping.\n * @param aliasMap Input/output mapping from the directive definition.\n * @param directiveIndex Index of the directive.\n * @param propertyAliases Object in which to store the results.\n * @param hostDirectiveAliasMap Object used to alias or filter out properties for host directives.\n * If the mapping is provided, it'll act as an allowlist, as well as a mapping of what public\n * name inputs/outputs should be exposed under.\n */\nfunction generatePropertyAliases(aliasMap, directiveIndex, propertyAliases, hostDirectiveAliasMap) {\n    for (let publicName in aliasMap) {\n        if (aliasMap.hasOwnProperty(publicName)) {\n            propertyAliases = propertyAliases === null ? {} : propertyAliases;\n            const internalName = aliasMap[publicName];\n            // If there are no host directive mappings, we want to remap using the alias map from the\n            // definition itself. If there is an alias map, it has two functions:\n            // 1. It serves as an allowlist of bindings that are exposed by the host directives. Only the\n            // ones inside the host directive map will be exposed on the host.\n            // 2. The public name of the property is aliased using the host directive alias map, rather\n            // than the alias map from the definition.\n            if (hostDirectiveAliasMap === null) {\n                addPropertyAlias(propertyAliases, directiveIndex, publicName, internalName);\n            }\n            else if (hostDirectiveAliasMap.hasOwnProperty(publicName)) {\n                addPropertyAlias(propertyAliases, directiveIndex, hostDirectiveAliasMap[publicName], internalName);\n            }\n        }\n    }\n    return propertyAliases;\n}\nfunction addPropertyAlias(propertyAliases, directiveIndex, publicName, internalName) {\n    if (propertyAliases.hasOwnProperty(publicName)) {\n        propertyAliases[publicName].push(directiveIndex, internalName);\n    }\n    else {\n        propertyAliases[publicName] = [directiveIndex, internalName];\n    }\n}\n/**\n * Initializes data structures required to work with directive inputs and outputs.\n * Initialization is done for all directives matched on a given TNode.\n */\nfunction initializeInputAndOutputAliases(tView, tNode, hostDirectiveDefinitionMap) {\n    ngDevMode && assertFirstCreatePass(tView);\n    const start = tNode.directiveStart;\n    const end = tNode.directiveEnd;\n    const tViewData = tView.data;\n    const tNodeAttrs = tNode.attrs;\n    const inputsFromAttrs = [];\n    let inputsStore = null;\n    let outputsStore = null;\n    for (let directiveIndex = start; directiveIndex < end; directiveIndex++) {\n        const directiveDef = tViewData[directiveIndex];\n        const aliasData = hostDirectiveDefinitionMap ? hostDirectiveDefinitionMap.get(directiveDef) : null;\n        const aliasedInputs = aliasData ? aliasData.inputs : null;\n        const aliasedOutputs = aliasData ? aliasData.outputs : null;\n        inputsStore =\n            generatePropertyAliases(directiveDef.inputs, directiveIndex, inputsStore, aliasedInputs);\n        outputsStore =\n            generatePropertyAliases(directiveDef.outputs, directiveIndex, outputsStore, aliasedOutputs);\n        // Do not use unbound attributes as inputs to structural directives, since structural\n        // directive inputs can only be set using microsyntax (e.g. `<div *dir=\"exp\">`).\n        // TODO(FW-1930): microsyntax expressions may also contain unbound/static attributes, which\n        // should be set for inline templates.\n        const initialInputs = (inputsStore !== null && tNodeAttrs !== null && !isInlineTemplate(tNode)) ?\n            generateInitialInputs(inputsStore, directiveIndex, tNodeAttrs) :\n            null;\n        inputsFromAttrs.push(initialInputs);\n    }\n    if (inputsStore !== null) {\n        if (inputsStore.hasOwnProperty('class')) {\n            tNode.flags |= 8 /* TNodeFlags.hasClassInput */;\n        }\n        if (inputsStore.hasOwnProperty('style')) {\n            tNode.flags |= 16 /* TNodeFlags.hasStyleInput */;\n        }\n    }\n    tNode.initialInputs = inputsFromAttrs;\n    tNode.inputs = inputsStore;\n    tNode.outputs = outputsStore;\n}\n/**\n * Mapping between attributes names that don't correspond to their element property names.\n *\n * Performance note: this function is written as a series of if checks (instead of, say, a property\n * object lookup) for performance reasons - the series of `if` checks seems to be the fastest way of\n * mapping property names. Do NOT change without benchmarking.\n *\n * Note: this mapping has to be kept in sync with the equally named mapping in the template\n * type-checking machinery of ngtsc.\n */\nfunction mapPropName(name) {\n    if (name === 'class')\n        return 'className';\n    if (name === 'for')\n        return 'htmlFor';\n    if (name === 'formaction')\n        return 'formAction';\n    if (name === 'innerHtml')\n        return 'innerHTML';\n    if (name === 'readonly')\n        return 'readOnly';\n    if (name === 'tabindex')\n        return 'tabIndex';\n    return name;\n}\nfunction elementPropertyInternal(tView, tNode, lView, propName, value, renderer, sanitizer, nativeOnly) {\n    ngDevMode && assertNotSame(value, NO_CHANGE, 'Incoming value should never be NO_CHANGE.');\n    const element = getNativeByTNode(tNode, lView);\n    let inputData = tNode.inputs;\n    let dataValue;\n    if (!nativeOnly && inputData != null && (dataValue = inputData[propName])) {\n        setInputsForProperty(tView, lView, dataValue, propName, value);\n        if (isComponentHost(tNode))\n            markDirtyIfOnPush(lView, tNode.index);\n        if (ngDevMode) {\n            setNgReflectProperties(lView, element, tNode.type, dataValue, value);\n        }\n    }\n    else if (tNode.type & 3 /* TNodeType.AnyRNode */) {\n        propName = mapPropName(propName);\n        if (ngDevMode) {\n            validateAgainstEventProperties(propName);\n            if (!isPropertyValid(element, propName, tNode.value, tView.schemas)) {\n                handleUnknownPropertyError(propName, tNode.value, tNode.type, lView);\n            }\n            ngDevMode.rendererSetProperty++;\n        }\n        // It is assumed that the sanitizer is only added when the compiler determines that the\n        // property is risky, so sanitization can be done without further checks.\n        value = sanitizer != null ? sanitizer(value, tNode.value || '', propName) : value;\n        renderer.setProperty(element, propName, value);\n    }\n    else if (tNode.type & 12 /* TNodeType.AnyContainer */) {\n        // If the node is a container and the property didn't\n        // match any of the inputs or schemas we should throw.\n        if (ngDevMode && !matchingSchemas(tView.schemas, tNode.value)) {\n            handleUnknownPropertyError(propName, tNode.value, tNode.type, lView);\n        }\n    }\n}\n/** If node is an OnPush component, marks its LView dirty. */\nfunction markDirtyIfOnPush(lView, viewIndex) {\n    ngDevMode && assertLView(lView);\n    const childComponentLView = getComponentLViewByIndex(viewIndex, lView);\n    if (!(childComponentLView[FLAGS] & 16 /* LViewFlags.CheckAlways */)) {\n        childComponentLView[FLAGS] |= 32 /* LViewFlags.Dirty */;\n    }\n}\nfunction setNgReflectProperty(lView, element, type, attrName, value) {\n    const renderer = lView[RENDERER];\n    attrName = normalizeDebugBindingName(attrName);\n    const debugValue = normalizeDebugBindingValue(value);\n    if (type & 3 /* TNodeType.AnyRNode */) {\n        if (value == null) {\n            renderer.removeAttribute(element, attrName);\n        }\n        else {\n            renderer.setAttribute(element, attrName, debugValue);\n        }\n    }\n    else {\n        const textContent = escapeCommentText(`bindings=${JSON.stringify({ [attrName]: debugValue }, null, 2)}`);\n        renderer.setValue(element, textContent);\n    }\n}\nfunction setNgReflectProperties(lView, element, type, dataValue, value) {\n    if (type & (3 /* TNodeType.AnyRNode */ | 4 /* TNodeType.Container */)) {\n        /**\n         * dataValue is an array containing runtime input or output names for the directives:\n         * i+0: directive instance index\n         * i+1: privateName\n         *\n         * e.g. [0, 'change', 'change-minified']\n         * we want to set the reflected property with the privateName: dataValue[i+1]\n         */\n        for (let i = 0; i < dataValue.length; i += 2) {\n            setNgReflectProperty(lView, element, type, dataValue[i + 1], value);\n        }\n    }\n}\n/**\n * Resolve the matched directives on a node.\n */\nfunction resolveDirectives(tView, lView, tNode, localRefs) {\n    // Please make sure to have explicit type for `exportsMap`. Inferred type triggers bug in\n    // tsickle.\n    ngDevMode && assertFirstCreatePass(tView);\n    if (getBindingsEnabled()) {\n        const exportsMap = localRefs === null ? null : { '': -1 };\n        const matchResult = findDirectiveDefMatches(tView, tNode);\n        let directiveDefs;\n        let hostDirectiveDefs;\n        if (matchResult === null) {\n            directiveDefs = hostDirectiveDefs = null;\n        }\n        else {\n            [directiveDefs, hostDirectiveDefs] = matchResult;\n        }\n        if (directiveDefs !== null) {\n            initializeDirectives(tView, lView, tNode, directiveDefs, exportsMap, hostDirectiveDefs);\n        }\n        if (exportsMap)\n            cacheMatchingLocalNames(tNode, localRefs, exportsMap);\n    }\n    // Merge the template attrs last so that they have the highest priority.\n    tNode.mergedAttrs = mergeHostAttrs(tNode.mergedAttrs, tNode.attrs);\n}\n/** Initializes the data structures necessary for a list of directives to be instantiated. */\nfunction initializeDirectives(tView, lView, tNode, directives, exportsMap, hostDirectiveDefs) {\n    ngDevMode && assertFirstCreatePass(tView);\n    // Publishes the directive types to DI so they can be injected. Needs to\n    // happen in a separate pass before the TNode flags have been initialized.\n    for (let i = 0; i < directives.length; i++) {\n        diPublicInInjector(getOrCreateNodeInjectorForNode(tNode, lView), tView, directives[i].type);\n    }\n    initTNodeFlags(tNode, tView.data.length, directives.length);\n    // When the same token is provided by several directives on the same node, some rules apply in\n    // the viewEngine:\n    // - viewProviders have priority over providers\n    // - the last directive in NgModule.declarations has priority over the previous one\n    // So to match these rules, the order in which providers are added in the arrays is very\n    // important.\n    for (let i = 0; i < directives.length; i++) {\n        const def = directives[i];\n        if (def.providersResolver)\n            def.providersResolver(def);\n    }\n    let preOrderHooksFound = false;\n    let preOrderCheckHooksFound = false;\n    let directiveIdx = allocExpando(tView, lView, directives.length, null);\n    ngDevMode &&\n        assertSame(directiveIdx, tNode.directiveStart, 'TNode.directiveStart should point to just allocated space');\n    for (let i = 0; i < directives.length; i++) {\n        const def = directives[i];\n        // Merge the attrs in the order of matches. This assumes that the first directive is the\n        // component itself, so that the component has the least priority.\n        tNode.mergedAttrs = mergeHostAttrs(tNode.mergedAttrs, def.hostAttrs);\n        configureViewWithDirective(tView, tNode, lView, directiveIdx, def);\n        saveNameToExportMap(directiveIdx, def, exportsMap);\n        if (def.contentQueries !== null)\n            tNode.flags |= 4 /* TNodeFlags.hasContentQuery */;\n        if (def.hostBindings !== null || def.hostAttrs !== null || def.hostVars !== 0)\n            tNode.flags |= 64 /* TNodeFlags.hasHostBindings */;\n        const lifeCycleHooks = def.type.prototype;\n        // Only push a node index into the preOrderHooks array if this is the first\n        // pre-order hook found on this node.\n        if (!preOrderHooksFound &&\n            (lifeCycleHooks.ngOnChanges || lifeCycleHooks.ngOnInit || lifeCycleHooks.ngDoCheck)) {\n            // We will push the actual hook function into this array later during dir instantiation.\n            // We cannot do it now because we must ensure hooks are registered in the same\n            // order that directives are created (i.e. injection order).\n            (tView.preOrderHooks ?? (tView.preOrderHooks = [])).push(tNode.index);\n            preOrderHooksFound = true;\n        }\n        if (!preOrderCheckHooksFound && (lifeCycleHooks.ngOnChanges || lifeCycleHooks.ngDoCheck)) {\n            (tView.preOrderCheckHooks ?? (tView.preOrderCheckHooks = [])).push(tNode.index);\n            preOrderCheckHooksFound = true;\n        }\n        directiveIdx++;\n    }\n    initializeInputAndOutputAliases(tView, tNode, hostDirectiveDefs);\n}\n/**\n * Add `hostBindings` to the `TView.hostBindingOpCodes`.\n *\n * @param tView `TView` to which the `hostBindings` should be added.\n * @param tNode `TNode` the element which contains the directive\n * @param directiveIdx Directive index in view.\n * @param directiveVarsIdx Where will the directive's vars be stored\n * @param def `ComponentDef`/`DirectiveDef`, which contains the `hostVars`/`hostBindings` to add.\n */\nfunction registerHostBindingOpCodes(tView, tNode, directiveIdx, directiveVarsIdx, def) {\n    ngDevMode && assertFirstCreatePass(tView);\n    const hostBindings = def.hostBindings;\n    if (hostBindings) {\n        let hostBindingOpCodes = tView.hostBindingOpCodes;\n        if (hostBindingOpCodes === null) {\n            hostBindingOpCodes = tView.hostBindingOpCodes = [];\n        }\n        const elementIndx = ~tNode.index;\n        if (lastSelectedElementIdx(hostBindingOpCodes) != elementIndx) {\n            // Conditionally add select element so that we are more efficient in execution.\n            // NOTE: this is strictly not necessary and it trades code size for runtime perf.\n            // (We could just always add it.)\n            hostBindingOpCodes.push(elementIndx);\n        }\n        hostBindingOpCodes.push(directiveIdx, directiveVarsIdx, hostBindings);\n    }\n}\n/**\n * Returns the last selected element index in the `HostBindingOpCodes`\n *\n * For perf reasons we don't need to update the selected element index in `HostBindingOpCodes` only\n * if it changes. This method returns the last index (or '0' if not found.)\n *\n * Selected element index are only the ones which are negative.\n */\nfunction lastSelectedElementIdx(hostBindingOpCodes) {\n    let i = hostBindingOpCodes.length;\n    while (i > 0) {\n        const value = hostBindingOpCodes[--i];\n        if (typeof value === 'number' && value < 0) {\n            return value;\n        }\n    }\n    return 0;\n}\n/**\n * Instantiate all the directives that were previously resolved on the current node.\n */\nfunction instantiateAllDirectives(tView, lView, tNode, native) {\n    const start = tNode.directiveStart;\n    const end = tNode.directiveEnd;\n    // The component view needs to be created before creating the node injector\n    // since it is used to inject some special symbols like `ChangeDetectorRef`.\n    if (isComponentHost(tNode)) {\n        ngDevMode && assertTNodeType(tNode, 3 /* TNodeType.AnyRNode */);\n        addComponentLogic(lView, tNode, tView.data[start + tNode.componentOffset]);\n    }\n    if (!tView.firstCreatePass) {\n        getOrCreateNodeInjectorForNode(tNode, lView);\n    }\n    attachPatchData(native, lView);\n    const initialInputs = tNode.initialInputs;\n    for (let i = start; i < end; i++) {\n        const def = tView.data[i];\n        const directive = getNodeInjectable(lView, tView, i, tNode);\n        attachPatchData(directive, lView);\n        if (initialInputs !== null) {\n            setInputsFromAttrs(lView, i - start, directive, def, tNode, initialInputs);\n        }\n        if (isComponentDef(def)) {\n            const componentView = getComponentLViewByIndex(tNode.index, lView);\n            componentView[CONTEXT] = getNodeInjectable(lView, tView, i, tNode);\n        }\n    }\n}\nfunction invokeDirectivesHostBindings(tView, lView, tNode) {\n    const start = tNode.directiveStart;\n    const end = tNode.directiveEnd;\n    const elementIndex = tNode.index;\n    const currentDirectiveIndex = getCurrentDirectiveIndex();\n    try {\n        setSelectedIndex(elementIndex);\n        for (let dirIndex = start; dirIndex < end; dirIndex++) {\n            const def = tView.data[dirIndex];\n            const directive = lView[dirIndex];\n            setCurrentDirectiveIndex(dirIndex);\n            if (def.hostBindings !== null || def.hostVars !== 0 || def.hostAttrs !== null) {\n                invokeHostBindingsInCreationMode(def, directive);\n            }\n        }\n    }\n    finally {\n        setSelectedIndex(-1);\n        setCurrentDirectiveIndex(currentDirectiveIndex);\n    }\n}\n/**\n * Invoke the host bindings in creation mode.\n *\n * @param def `DirectiveDef` which may contain the `hostBindings` function.\n * @param directive Instance of directive.\n */\nfunction invokeHostBindingsInCreationMode(def, directive) {\n    if (def.hostBindings !== null) {\n        def.hostBindings(1 /* RenderFlags.Create */, directive);\n    }\n}\n/**\n * Matches the current node against all available selectors.\n * If a component is matched (at most one), it is returned in first position in the array.\n */\nfunction findDirectiveDefMatches(tView, tNode) {\n    ngDevMode && assertFirstCreatePass(tView);\n    ngDevMode && assertTNodeType(tNode, 3 /* TNodeType.AnyRNode */ | 12 /* TNodeType.AnyContainer */);\n    const registry = tView.directiveRegistry;\n    let matches = null;\n    let hostDirectiveDefs = null;\n    if (registry) {\n        for (let i = 0; i < registry.length; i++) {\n            const def = registry[i];\n            if (isNodeMatchingSelectorList(tNode, def.selectors, /* isProjectionMode */ false)) {\n                matches || (matches = []);\n                if (isComponentDef(def)) {\n                    if (ngDevMode) {\n                        assertTNodeType(tNode, 2 /* TNodeType.Element */, `\"${tNode.value}\" tags cannot be used as component hosts. ` +\n                            `Please use a different tag to activate the ${stringify(def.type)} component.`);\n                        if (isComponentHost(tNode)) {\n                            throwMultipleComponentError(tNode, matches.find(isComponentDef).type, def.type);\n                        }\n                    }\n                    // Components are inserted at the front of the matches array so that their lifecycle\n                    // hooks run before any directive lifecycle hooks. This appears to be for ViewEngine\n                    // compatibility. This logic doesn't make sense with host directives, because it\n                    // would allow the host directives to undo any overrides the host may have made.\n                    // To handle this case, the host directives of components are inserted at the beginning\n                    // of the array, followed by the component. As such, the insertion order is as follows:\n                    // 1. Host directives belonging to the selector-matched component.\n                    // 2. Selector-matched component.\n                    // 3. Host directives belonging to selector-matched directives.\n                    // 4. Selector-matched directives.\n                    if (def.findHostDirectiveDefs !== null) {\n                        const hostDirectiveMatches = [];\n                        hostDirectiveDefs = hostDirectiveDefs || new Map();\n                        def.findHostDirectiveDefs(def, hostDirectiveMatches, hostDirectiveDefs);\n                        // Add all host directives declared on this component, followed by the component itself.\n                        // Host directives should execute first so the host has a chance to override changes\n                        // to the DOM made by them.\n                        matches.unshift(...hostDirectiveMatches, def);\n                        // Component is offset starting from the beginning of the host directives array.\n                        const componentOffset = hostDirectiveMatches.length;\n                        markAsComponentHost(tView, tNode, componentOffset);\n                    }\n                    else {\n                        // No host directives on this component, just add the\n                        // component def to the beginning of the matches.\n                        matches.unshift(def);\n                        markAsComponentHost(tView, tNode, 0);\n                    }\n                }\n                else {\n                    // Append any host directives to the matches first.\n                    hostDirectiveDefs = hostDirectiveDefs || new Map();\n                    def.findHostDirectiveDefs?.(def, matches, hostDirectiveDefs);\n                    matches.push(def);\n                }\n            }\n        }\n    }\n    return matches === null ? null : [matches, hostDirectiveDefs];\n}\n/**\n * Marks a given TNode as a component's host. This consists of:\n * - setting the component offset on the TNode.\n * - storing index of component's host element so it will be queued for view refresh during CD.\n */\nfunction markAsComponentHost(tView, hostTNode, componentOffset) {\n    ngDevMode && assertFirstCreatePass(tView);\n    ngDevMode && assertGreaterThan(componentOffset, -1, 'componentOffset must be great than -1');\n    hostTNode.componentOffset = componentOffset;\n    (tView.components ?? (tView.components = [])).push(hostTNode.index);\n}\n/** Caches local names and their matching directive indices for query and template lookups. */\nfunction cacheMatchingLocalNames(tNode, localRefs, exportsMap) {\n    if (localRefs) {\n        const localNames = tNode.localNames = [];\n        // Local names must be stored in tNode in the same order that localRefs are defined\n        // in the template to ensure the data is loaded in the same slots as their refs\n        // in the template (for template queries).\n        for (let i = 0; i < localRefs.length; i += 2) {\n            const index = exportsMap[localRefs[i + 1]];\n            if (index == null)\n                throw new RuntimeError(-301 /* RuntimeErrorCode.EXPORT_NOT_FOUND */, ngDevMode && `Export of name '${localRefs[i + 1]}' not found!`);\n            localNames.push(localRefs[i], index);\n        }\n    }\n}\n/**\n * Builds up an export map as directives are created, so local refs can be quickly mapped\n * to their directive instances.\n */\nfunction saveNameToExportMap(directiveIdx, def, exportsMap) {\n    if (exportsMap) {\n        if (def.exportAs) {\n            for (let i = 0; i < def.exportAs.length; i++) {\n                exportsMap[def.exportAs[i]] = directiveIdx;\n            }\n        }\n        if (isComponentDef(def))\n            exportsMap[''] = directiveIdx;\n    }\n}\n/**\n * Initializes the flags on the current node, setting all indices to the initial index,\n * the directive count to 0, and adding the isComponent flag.\n * @param index the initial index\n */\nfunction initTNodeFlags(tNode, index, numberOfDirectives) {\n    ngDevMode &&\n        assertNotEqual(numberOfDirectives, tNode.directiveEnd - tNode.directiveStart, 'Reached the max number of directives');\n    tNode.flags |= 1 /* TNodeFlags.isDirectiveHost */;\n    // When the first directive is created on a node, save the index\n    tNode.directiveStart = index;\n    tNode.directiveEnd = index + numberOfDirectives;\n    tNode.providerIndexes = index;\n}\n/**\n * Setup directive for instantiation.\n *\n * We need to create a `NodeInjectorFactory` which is then inserted in both the `Blueprint` as well\n * as `LView`. `TView` gets the `DirectiveDef`.\n *\n * @param tView `TView`\n * @param tNode `TNode`\n * @param lView `LView`\n * @param directiveIndex Index where the directive will be stored in the Expando.\n * @param def `DirectiveDef`\n */\nfunction configureViewWithDirective(tView, tNode, lView, directiveIndex, def) {\n    ngDevMode &&\n        assertGreaterThanOrEqual(directiveIndex, HEADER_OFFSET, 'Must be in Expando section');\n    tView.data[directiveIndex] = def;\n    const directiveFactory = def.factory || (def.factory = getFactoryDef(def.type, true));\n    // Even though `directiveFactory` will already be using `ɵɵdirectiveInject` in its generated code,\n    // we also want to support `inject()` directly from the directive constructor context so we set\n    // `ɵɵdirectiveInject` as the inject implementation here too.\n    const nodeInjectorFactory = new NodeInjectorFactory(directiveFactory, isComponentDef(def), ɵɵdirectiveInject);\n    tView.blueprint[directiveIndex] = nodeInjectorFactory;\n    lView[directiveIndex] = nodeInjectorFactory;\n    registerHostBindingOpCodes(tView, tNode, directiveIndex, allocExpando(tView, lView, def.hostVars, NO_CHANGE), def);\n}\nfunction addComponentLogic(lView, hostTNode, def) {\n    const native = getNativeByTNode(hostTNode, lView);\n    const tView = getOrCreateComponentTView(def);\n    // Only component views should be added to the view tree directly. Embedded views are\n    // accessed through their containers because they may be removed / re-added later.\n    const rendererFactory = lView[RENDERER_FACTORY];\n    const componentView = addToViewTree(lView, createLView(lView, tView, null, def.onPush ? 32 /* LViewFlags.Dirty */ : 16 /* LViewFlags.CheckAlways */, native, hostTNode, rendererFactory, rendererFactory.createRenderer(native, def), null, null, null));\n    // Component view will always be created before any injected LContainers,\n    // so this is a regular element, wrap it with the component view\n    lView[hostTNode.index] = componentView;\n}\nfunction elementAttributeInternal(tNode, lView, name, value, sanitizer, namespace) {\n    if (ngDevMode) {\n        assertNotSame(value, NO_CHANGE, 'Incoming value should never be NO_CHANGE.');\n        validateAgainstEventAttributes(name);\n        assertTNodeType(tNode, 2 /* TNodeType.Element */, `Attempted to set attribute \\`${name}\\` on a container node. ` +\n            `Host bindings are not valid on ng-container or ng-template.`);\n    }\n    const element = getNativeByTNode(tNode, lView);\n    setElementAttribute(lView[RENDERER], element, namespace, tNode.value, name, value, sanitizer);\n}\nfunction setElementAttribute(renderer, element, namespace, tagName, name, value, sanitizer) {\n    if (value == null) {\n        ngDevMode && ngDevMode.rendererRemoveAttribute++;\n        renderer.removeAttribute(element, name, namespace);\n    }\n    else {\n        ngDevMode && ngDevMode.rendererSetAttribute++;\n        const strValue = sanitizer == null ? renderStringify(value) : sanitizer(value, tagName || '', name);\n        renderer.setAttribute(element, name, strValue, namespace);\n    }\n}\n/**\n * Sets initial input properties on directive instances from attribute data\n *\n * @param lView Current LView that is being processed.\n * @param directiveIndex Index of the directive in directives array\n * @param instance Instance of the directive on which to set the initial inputs\n * @param def The directive def that contains the list of inputs\n * @param tNode The static data for this node\n */\nfunction setInputsFromAttrs(lView, directiveIndex, instance, def, tNode, initialInputData) {\n    const initialInputs = initialInputData[directiveIndex];\n    if (initialInputs !== null) {\n        const setInput = def.setInput;\n        for (let i = 0; i < initialInputs.length;) {\n            const publicName = initialInputs[i++];\n            const privateName = initialInputs[i++];\n            const value = initialInputs[i++];\n            if (setInput !== null) {\n                def.setInput(instance, value, publicName, privateName);\n            }\n            else {\n                instance[privateName] = value;\n            }\n            if (ngDevMode) {\n                const nativeElement = getNativeByTNode(tNode, lView);\n                setNgReflectProperty(lView, nativeElement, tNode.type, privateName, value);\n            }\n        }\n    }\n}\n/**\n * Generates initialInputData for a node and stores it in the template's static storage\n * so subsequent template invocations don't have to recalculate it.\n *\n * initialInputData is an array containing values that need to be set as input properties\n * for directives on this node, but only once on creation. We need this array to support\n * the case where you set an @Input property of a directive using attribute-like syntax.\n * e.g. if you have a `name` @Input, you can set it once like this:\n *\n * <my-component name=\"Bess\"></my-component>\n *\n * @param inputs Input alias map that was generated from the directive def inputs.\n * @param directiveIndex Index of the directive that is currently being processed.\n * @param attrs Static attrs on this node.\n */\nfunction generateInitialInputs(inputs, directiveIndex, attrs) {\n    let inputsToStore = null;\n    let i = 0;\n    while (i < attrs.length) {\n        const attrName = attrs[i];\n        if (attrName === 0 /* AttributeMarker.NamespaceURI */) {\n            // We do not allow inputs on namespaced attributes.\n            i += 4;\n            continue;\n        }\n        else if (attrName === 5 /* AttributeMarker.ProjectAs */) {\n            // Skip over the `ngProjectAs` value.\n            i += 2;\n            continue;\n        }\n        // If we hit any other attribute markers, we're done anyway. None of those are valid inputs.\n        if (typeof attrName === 'number')\n            break;\n        if (inputs.hasOwnProperty(attrName)) {\n            if (inputsToStore === null)\n                inputsToStore = [];\n            // Find the input's public name from the input store. Note that we can be found easier\n            // through the directive def, but we want to do it using the inputs store so that it can\n            // account for host directive aliases.\n            const inputConfig = inputs[attrName];\n            for (let j = 0; j < inputConfig.length; j += 2) {\n                if (inputConfig[j] === directiveIndex) {\n                    inputsToStore.push(attrName, inputConfig[j + 1], attrs[i + 1]);\n                    // A directive can't have multiple inputs with the same name so we can break here.\n                    break;\n                }\n            }\n        }\n        i += 2;\n    }\n    return inputsToStore;\n}\n//////////////////////////\n//// ViewContainer & View\n//////////////////////////\n/**\n * Creates a LContainer, either from a container instruction, or for a ViewContainerRef.\n *\n * @param hostNative The host element for the LContainer\n * @param hostTNode The host TNode for the LContainer\n * @param currentView The parent view of the LContainer\n * @param native The native comment element\n * @param isForViewContainerRef Optional a flag indicating the ViewContainerRef case\n * @returns LContainer\n */\nfunction createLContainer(hostNative, currentView, native, tNode) {\n    ngDevMode && assertLView(currentView);\n    const lContainer = [\n        hostNative,\n        true,\n        false,\n        currentView,\n        null,\n        0,\n        tNode,\n        native,\n        null,\n        null, // moved views\n    ];\n    ngDevMode &&\n        assertEqual(lContainer.length, CONTAINER_HEADER_OFFSET, 'Should allocate correct number of slots for LContainer header.');\n    return lContainer;\n}\n/**\n * Goes over embedded views (ones created through ViewContainerRef APIs) and refreshes\n * them by executing an associated template function.\n */\nfunction refreshEmbeddedViews(lView) {\n    for (let lContainer = getFirstLContainer(lView); lContainer !== null; lContainer = getNextLContainer(lContainer)) {\n        for (let i = CONTAINER_HEADER_OFFSET; i < lContainer.length; i++) {\n            const embeddedLView = lContainer[i];\n            const embeddedTView = embeddedLView[TVIEW];\n            ngDevMode && assertDefined(embeddedTView, 'TView must be allocated');\n            if (viewAttachedToChangeDetector(embeddedLView)) {\n                refreshView(embeddedTView, embeddedLView, embeddedTView.template, embeddedLView[CONTEXT]);\n            }\n        }\n    }\n}\n/**\n * Mark transplanted views as needing to be refreshed at their insertion points.\n *\n * @param lView The `LView` that may have transplanted views.\n */\nfunction markTransplantedViewsForRefresh(lView) {\n    for (let lContainer = getFirstLContainer(lView); lContainer !== null; lContainer = getNextLContainer(lContainer)) {\n        if (!lContainer[HAS_TRANSPLANTED_VIEWS])\n            continue;\n        const movedViews = lContainer[MOVED_VIEWS];\n        ngDevMode && assertDefined(movedViews, 'Transplanted View flags set but missing MOVED_VIEWS');\n        for (let i = 0; i < movedViews.length; i++) {\n            const movedLView = movedViews[i];\n            const insertionLContainer = movedLView[PARENT];\n            ngDevMode && assertLContainer(insertionLContainer);\n            // We don't want to increment the counter if the moved LView was already marked for\n            // refresh.\n            if ((movedLView[FLAGS] & 512 /* LViewFlags.RefreshTransplantedView */) === 0) {\n                updateTransplantedViewCount(insertionLContainer, 1);\n            }\n            // Note, it is possible that the `movedViews` is tracking views that are transplanted *and*\n            // those that aren't (declaration component === insertion component). In the latter case,\n            // it's fine to add the flag, as we will clear it immediately in\n            // `refreshEmbeddedViews` for the view currently being refreshed.\n            movedLView[FLAGS] |= 512 /* LViewFlags.RefreshTransplantedView */;\n        }\n    }\n}\n/////////////\n/**\n * Refreshes components by entering the component view and processing its bindings, queries, etc.\n *\n * @param componentHostIdx  Element index in LView[] (adjusted for HEADER_OFFSET)\n */\nfunction refreshComponent(hostLView, componentHostIdx) {\n    ngDevMode && assertEqual(isCreationMode(hostLView), false, 'Should be run in update mode');\n    const componentView = getComponentLViewByIndex(componentHostIdx, hostLView);\n    // Only attached components that are CheckAlways or OnPush and dirty should be refreshed\n    if (viewAttachedToChangeDetector(componentView)) {\n        const tView = componentView[TVIEW];\n        if (componentView[FLAGS] & (16 /* LViewFlags.CheckAlways */ | 32 /* LViewFlags.Dirty */)) {\n            refreshView(tView, componentView, tView.template, componentView[CONTEXT]);\n        }\n        else if (componentView[TRANSPLANTED_VIEWS_TO_REFRESH] > 0) {\n            // Only attached components that are CheckAlways or OnPush and dirty should be refreshed\n            refreshContainsDirtyView(componentView);\n        }\n    }\n}\n/**\n * Refreshes all transplanted views marked with `LViewFlags.RefreshTransplantedView` that are\n * children or descendants of the given lView.\n *\n * @param lView The lView which contains descendant transplanted views that need to be refreshed.\n */\nfunction refreshContainsDirtyView(lView) {\n    for (let lContainer = getFirstLContainer(lView); lContainer !== null; lContainer = getNextLContainer(lContainer)) {\n        for (let i = CONTAINER_HEADER_OFFSET; i < lContainer.length; i++) {\n            const embeddedLView = lContainer[i];\n            if (viewAttachedToChangeDetector(embeddedLView)) {\n                if (embeddedLView[FLAGS] & 512 /* LViewFlags.RefreshTransplantedView */) {\n                    const embeddedTView = embeddedLView[TVIEW];\n                    ngDevMode && assertDefined(embeddedTView, 'TView must be allocated');\n                    refreshView(embeddedTView, embeddedLView, embeddedTView.template, embeddedLView[CONTEXT]);\n                }\n                else if (embeddedLView[TRANSPLANTED_VIEWS_TO_REFRESH] > 0) {\n                    refreshContainsDirtyView(embeddedLView);\n                }\n            }\n        }\n    }\n    const tView = lView[TVIEW];\n    // Refresh child component views.\n    const components = tView.components;\n    if (components !== null) {\n        for (let i = 0; i < components.length; i++) {\n            const componentView = getComponentLViewByIndex(components[i], lView);\n            // Only attached components that are CheckAlways or OnPush and dirty should be refreshed\n            if (viewAttachedToChangeDetector(componentView) &&\n                componentView[TRANSPLANTED_VIEWS_TO_REFRESH] > 0) {\n                refreshContainsDirtyView(componentView);\n            }\n        }\n    }\n}\nfunction renderComponent(hostLView, componentHostIdx) {\n    ngDevMode && assertEqual(isCreationMode(hostLView), true, 'Should be run in creation mode');\n    const componentView = getComponentLViewByIndex(componentHostIdx, hostLView);\n    const componentTView = componentView[TVIEW];\n    syncViewWithBlueprint(componentTView, componentView);\n    renderView(componentTView, componentView, componentView[CONTEXT]);\n}\n/**\n * Syncs an LView instance with its blueprint if they have gotten out of sync.\n *\n * Typically, blueprints and their view instances should always be in sync, so the loop here\n * will be skipped. However, consider this case of two components side-by-side:\n *\n * App template:\n * ```\n * <comp></comp>\n * <comp></comp>\n * ```\n *\n * The following will happen:\n * 1. App template begins processing.\n * 2. First <comp> is matched as a component and its LView is created.\n * 3. Second <comp> is matched as a component and its LView is created.\n * 4. App template completes processing, so it's time to check child templates.\n * 5. First <comp> template is checked. It has a directive, so its def is pushed to blueprint.\n * 6. Second <comp> template is checked. Its blueprint has been updated by the first\n * <comp> template, but its LView was created before this update, so it is out of sync.\n *\n * Note that embedded views inside ngFor loops will never be out of sync because these views\n * are processed as soon as they are created.\n *\n * @param tView The `TView` that contains the blueprint for syncing\n * @param lView The view to sync\n */\nfunction syncViewWithBlueprint(tView, lView) {\n    for (let i = lView.length; i < tView.blueprint.length; i++) {\n        lView.push(tView.blueprint[i]);\n    }\n}\n/**\n * Adds LView or LContainer to the end of the current view tree.\n *\n * This structure will be used to traverse through nested views to remove listeners\n * and call onDestroy callbacks.\n *\n * @param lView The view where LView or LContainer should be added\n * @param adjustedHostIndex Index of the view's host node in LView[], adjusted for header\n * @param lViewOrLContainer The LView or LContainer to add to the view tree\n * @returns The state passed in\n */\nfunction addToViewTree(lView, lViewOrLContainer) {\n    // TODO(benlesh/misko): This implementation is incorrect, because it always adds the LContainer\n    // to the end of the queue, which means if the developer retrieves the LContainers from RNodes out\n    // of order, the change detection will run out of order, as the act of retrieving the the\n    // LContainer from the RNode is what adds it to the queue.\n    if (lView[CHILD_HEAD]) {\n        lView[CHILD_TAIL][NEXT] = lViewOrLContainer;\n    }\n    else {\n        lView[CHILD_HEAD] = lViewOrLContainer;\n    }\n    lView[CHILD_TAIL] = lViewOrLContainer;\n    return lViewOrLContainer;\n}\n///////////////////////////////\n//// Change detection\n///////////////////////////////\n/**\n * Marks current view and all ancestors dirty.\n *\n * Returns the root view because it is found as a byproduct of marking the view tree\n * dirty, and can be used by methods that consume markViewDirty() to easily schedule\n * change detection. Otherwise, such methods would need to traverse up the view tree\n * an additional time to get the root view and schedule a tick on it.\n *\n * @param lView The starting LView to mark dirty\n * @returns the root LView\n */\nfunction markViewDirty(lView) {\n    while (lView) {\n        lView[FLAGS] |= 32 /* LViewFlags.Dirty */;\n        const parent = getLViewParent(lView);\n        // Stop traversing up as soon as you find a root view that wasn't attached to any container\n        if (isRootView(lView) && !parent) {\n            return lView;\n        }\n        // continue otherwise\n        lView = parent;\n    }\n    return null;\n}\nfunction detectChangesInternal(tView, lView, context, notifyErrorHandler = true) {\n    const rendererFactory = lView[RENDERER_FACTORY];\n    // Check no changes mode is a dev only mode used to verify that bindings have not changed\n    // since they were assigned. We do not want to invoke renderer factory functions in that mode\n    // to avoid any possible side-effects.\n    const checkNoChangesMode = !!ngDevMode && isInCheckNoChangesMode();\n    if (!checkNoChangesMode && rendererFactory.begin)\n        rendererFactory.begin();\n    try {\n        refreshView(tView, lView, tView.template, context);\n    }\n    catch (error) {\n        if (notifyErrorHandler) {\n            handleError(lView, error);\n        }\n        throw error;\n    }\n    finally {\n        if (!checkNoChangesMode && rendererFactory.end)\n            rendererFactory.end();\n    }\n}\nfunction checkNoChangesInternal(tView, lView, context, notifyErrorHandler = true) {\n    setIsInCheckNoChangesMode(true);\n    try {\n        detectChangesInternal(tView, lView, context, notifyErrorHandler);\n    }\n    finally {\n        setIsInCheckNoChangesMode(false);\n    }\n}\nfunction executeViewQueryFn(flags, viewQueryFn, component) {\n    ngDevMode && assertDefined(viewQueryFn, 'View queries function to execute must be defined.');\n    setCurrentQueryIndex(0);\n    viewQueryFn(flags, component);\n}\n///////////////////////////////\n//// Bindings & interpolations\n///////////////////////////////\n/**\n * Stores meta-data for a property binding to be used by TestBed's `DebugElement.properties`.\n *\n * In order to support TestBed's `DebugElement.properties` we need to save, for each binding:\n * - a bound property name;\n * - a static parts of interpolated strings;\n *\n * A given property metadata is saved at the binding's index in the `TView.data` (in other words, a\n * property binding metadata will be stored in `TView.data` at the same index as a bound value in\n * `LView`). Metadata are represented as `INTERPOLATION_DELIMITER`-delimited string with the\n * following format:\n * - `propertyName` for bound properties;\n * - `propertyName�prefix�interpolation_static_part1�..interpolation_static_partN�suffix` for\n * interpolated properties.\n *\n * @param tData `TData` where meta-data will be saved;\n * @param tNode `TNode` that is a target of the binding;\n * @param propertyName bound property name;\n * @param bindingIndex binding index in `LView`\n * @param interpolationParts static interpolation parts (for property interpolations)\n */\nfunction storePropertyBindingMetadata(tData, tNode, propertyName, bindingIndex, ...interpolationParts) {\n    // Binding meta-data are stored only the first time a given property instruction is processed.\n    // Since we don't have a concept of the \"first update pass\" we need to check for presence of the\n    // binding meta-data to decide if one should be stored (or if was stored already).\n    if (tData[bindingIndex] === null) {\n        if (tNode.inputs == null || !tNode.inputs[propertyName]) {\n            const propBindingIdxs = tNode.propertyBindings || (tNode.propertyBindings = []);\n            propBindingIdxs.push(bindingIndex);\n            let bindingMetadata = propertyName;\n            if (interpolationParts.length > 0) {\n                bindingMetadata +=\n                    INTERPOLATION_DELIMITER + interpolationParts.join(INTERPOLATION_DELIMITER);\n            }\n            tData[bindingIndex] = bindingMetadata;\n        }\n    }\n}\nfunction getOrCreateLViewCleanup(view) {\n    // top level variables should not be exported for performance reasons (PERF_NOTES.md)\n    return view[CLEANUP] || (view[CLEANUP] = []);\n}\nfunction getOrCreateTViewCleanup(tView) {\n    return tView.cleanup || (tView.cleanup = []);\n}\n/**\n * There are cases where the sub component's renderer needs to be included\n * instead of the current renderer (see the componentSyntheticHost* instructions).\n */\nfunction loadComponentRenderer(currentDef, tNode, lView) {\n    // TODO(FW-2043): the `currentDef` is null when host bindings are invoked while creating root\n    // component (see packages/core/src/render3/component.ts). This is not consistent with the process\n    // of creating inner components, when current directive index is available in the state. In order\n    // to avoid relying on current def being `null` (thus special-casing root component creation), the\n    // process of creating root component should be unified with the process of creating inner\n    // components.\n    if (currentDef === null || isComponentDef(currentDef)) {\n        lView = unwrapLView(lView[tNode.index]);\n    }\n    return lView[RENDERER];\n}\n/** Handles an error thrown in an LView. */\nfunction handleError(lView, error) {\n    const injector = lView[INJECTOR$1];\n    const errorHandler = injector ? injector.get(ErrorHandler, null) : null;\n    errorHandler && errorHandler.handleError(error);\n}\n/**\n * Set the inputs of directives at the current node to corresponding value.\n *\n * @param tView The current TView\n * @param lView the `LView` which contains the directives.\n * @param inputs mapping between the public \"input\" name and privately-known,\n *        possibly minified, property names to write to.\n * @param value Value to set.\n */\nfunction setInputsForProperty(tView, lView, inputs, publicName, value) {\n    for (let i = 0; i < inputs.length;) {\n        const index = inputs[i++];\n        const privateName = inputs[i++];\n        const instance = lView[index];\n        ngDevMode && assertIndexInRange(lView, index);\n        const def = tView.data[index];\n        if (def.setInput !== null) {\n            def.setInput(instance, value, publicName, privateName);\n        }\n        else {\n            instance[privateName] = value;\n        }\n    }\n}\n/**\n * Updates a text binding at a given index in a given LView.\n */\nfunction textBindingInternal(lView, index, value) {\n    ngDevMode && assertString(value, 'Value should be a string');\n    ngDevMode && assertNotSame(value, NO_CHANGE, 'value should not be NO_CHANGE');\n    ngDevMode && assertIndexInRange(lView, index);\n    const element = getNativeByIndex(index, lView);\n    ngDevMode && assertDefined(element, 'native element should exist');\n    updateTextNode(lView[RENDERER], element, value);\n}\n\n/**\n * Compute the static styling (class/style) from `TAttributes`.\n *\n * This function should be called during `firstCreatePass` only.\n *\n * @param tNode The `TNode` into which the styling information should be loaded.\n * @param attrs `TAttributes` containing the styling information.\n * @param writeToHost Where should the resulting static styles be written?\n *   - `false` Write to `TNode.stylesWithoutHost` / `TNode.classesWithoutHost`\n *   - `true` Write to `TNode.styles` / `TNode.classes`\n */\nfunction computeStaticStyling(tNode, attrs, writeToHost) {\n    ngDevMode &&\n        assertFirstCreatePass(getTView(), 'Expecting to be called in first template pass only');\n    let styles = writeToHost ? tNode.styles : null;\n    let classes = writeToHost ? tNode.classes : null;\n    let mode = 0;\n    if (attrs !== null) {\n        for (let i = 0; i < attrs.length; i++) {\n            const value = attrs[i];\n            if (typeof value === 'number') {\n                mode = value;\n            }\n            else if (mode == 1 /* AttributeMarker.Classes */) {\n                classes = concatStringsWithSpace(classes, value);\n            }\n            else if (mode == 2 /* AttributeMarker.Styles */) {\n                const style = value;\n                const styleValue = attrs[++i];\n                styles = concatStringsWithSpace(styles, style + ': ' + styleValue + ';');\n            }\n        }\n    }\n    writeToHost ? tNode.styles = styles : tNode.stylesWithoutHost = styles;\n    writeToHost ? tNode.classes = classes : tNode.classesWithoutHost = classes;\n}\n\nfunction collectNativeNodes(tView, lView, tNode, result, isProjection = false) {\n    while (tNode !== null) {\n        ngDevMode &&\n            assertTNodeType(tNode, 3 /* TNodeType.AnyRNode */ | 12 /* TNodeType.AnyContainer */ | 16 /* TNodeType.Projection */ | 32 /* TNodeType.Icu */);\n        const lNode = lView[tNode.index];\n        if (lNode !== null) {\n            result.push(unwrapRNode(lNode));\n        }\n        // A given lNode can represent either a native node or a LContainer (when it is a host of a\n        // ViewContainerRef). When we find a LContainer we need to descend into it to collect root nodes\n        // from the views in this container.\n        if (isLContainer(lNode)) {\n            for (let i = CONTAINER_HEADER_OFFSET; i < lNode.length; i++) {\n                const lViewInAContainer = lNode[i];\n                const lViewFirstChildTNode = lViewInAContainer[TVIEW].firstChild;\n                if (lViewFirstChildTNode !== null) {\n                    collectNativeNodes(lViewInAContainer[TVIEW], lViewInAContainer, lViewFirstChildTNode, result);\n                }\n            }\n        }\n        const tNodeType = tNode.type;\n        if (tNodeType & 8 /* TNodeType.ElementContainer */) {\n            collectNativeNodes(tView, lView, tNode.child, result);\n        }\n        else if (tNodeType & 32 /* TNodeType.Icu */) {\n            const nextRNode = icuContainerIterate(tNode, lView);\n            let rNode;\n            while (rNode = nextRNode()) {\n                result.push(rNode);\n            }\n        }\n        else if (tNodeType & 16 /* TNodeType.Projection */) {\n            const nodesInSlot = getProjectionNodes(lView, tNode);\n            if (Array.isArray(nodesInSlot)) {\n                result.push(...nodesInSlot);\n            }\n            else {\n                const parentView = getLViewParent(lView[DECLARATION_COMPONENT_VIEW]);\n                ngDevMode && assertParentView(parentView);\n                collectNativeNodes(parentView[TVIEW], parentView, nodesInSlot, result, true);\n            }\n        }\n        tNode = isProjection ? tNode.projectionNext : tNode.next;\n    }\n    return result;\n}\n\nclass ViewRef$1 {\n    get rootNodes() {\n        const lView = this._lView;\n        const tView = lView[TVIEW];\n        return collectNativeNodes(tView, lView, tView.firstChild, []);\n    }\n    constructor(\n    /**\n     * This represents `LView` associated with the component when ViewRef is a ChangeDetectorRef.\n     *\n     * When ViewRef is created for a dynamic component, this also represents the `LView` for the\n     * component.\n     *\n     * For a \"regular\" ViewRef created for an embedded view, this is the `LView` for the embedded\n     * view.\n     *\n     * @internal\n     */\n    _lView, \n    /**\n     * This represents the `LView` associated with the point where `ChangeDetectorRef` was\n     * requested.\n     *\n     * This may be different from `_lView` if the `_cdRefInjectingView` is an embedded view.\n     */\n    _cdRefInjectingView) {\n        this._lView = _lView;\n        this._cdRefInjectingView = _cdRefInjectingView;\n        this._appRef = null;\n        this._attachedToViewContainer = false;\n    }\n    get context() {\n        return this._lView[CONTEXT];\n    }\n    set context(value) {\n        this._lView[CONTEXT] = value;\n    }\n    get destroyed() {\n        return (this._lView[FLAGS] & 128 /* LViewFlags.Destroyed */) === 128 /* LViewFlags.Destroyed */;\n    }\n    destroy() {\n        if (this._appRef) {\n            this._appRef.detachView(this);\n        }\n        else if (this._attachedToViewContainer) {\n            const parent = this._lView[PARENT];\n            if (isLContainer(parent)) {\n                const viewRefs = parent[VIEW_REFS];\n                const index = viewRefs ? viewRefs.indexOf(this) : -1;\n                if (index > -1) {\n                    ngDevMode &&\n                        assertEqual(index, parent.indexOf(this._lView) - CONTAINER_HEADER_OFFSET, 'An attached view should be in the same position within its container as its ViewRef in the VIEW_REFS array.');\n                    detachView(parent, index);\n                    removeFromArray(viewRefs, index);\n                }\n            }\n            this._attachedToViewContainer = false;\n        }\n        destroyLView(this._lView[TVIEW], this._lView);\n    }\n    onDestroy(callback) {\n        storeCleanupWithContext(this._lView[TVIEW], this._lView, null, callback);\n    }\n    /**\n     * Marks a view and all of its ancestors dirty.\n     *\n     * This can be used to ensure an {@link ChangeDetectionStrategy#OnPush OnPush} component is\n     * checked when it needs to be re-rendered but the two normal triggers haven't marked it\n     * dirty (i.e. inputs haven't changed and events haven't fired in the view).\n     *\n     * <!-- TODO: Add a link to a chapter on OnPush components -->\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * ```typescript\n     * @Component({\n     *   selector: 'app-root',\n     *   template: `Number of ticks: {{numberOfTicks}}`\n     *   changeDetection: ChangeDetectionStrategy.OnPush,\n     * })\n     * class AppComponent {\n     *   numberOfTicks = 0;\n     *\n     *   constructor(private ref: ChangeDetectorRef) {\n     *     setInterval(() => {\n     *       this.numberOfTicks++;\n     *       // the following is required, otherwise the view will not be updated\n     *       this.ref.markForCheck();\n     *     }, 1000);\n     *   }\n     * }\n     * ```\n     */\n    markForCheck() {\n        markViewDirty(this._cdRefInjectingView || this._lView);\n    }\n    /**\n     * Detaches the view from the change detection tree.\n     *\n     * Detached views will not be checked during change detection runs until they are\n     * re-attached, even if they are dirty. `detach` can be used in combination with\n     * {@link ChangeDetectorRef#detectChanges detectChanges} to implement local change\n     * detection checks.\n     *\n     * <!-- TODO: Add a link to a chapter on detach/reattach/local digest -->\n     * <!-- TODO: Add a live demo once ref.detectChanges is merged into master -->\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * The following example defines a component with a large list of readonly data.\n     * Imagine the data changes constantly, many times per second. For performance reasons,\n     * we want to check and update the list every five seconds. We can do that by detaching\n     * the component's change detector and doing a local check every five seconds.\n     *\n     * ```typescript\n     * class DataProvider {\n     *   // in a real application the returned data will be different every time\n     *   get data() {\n     *     return [1,2,3,4,5];\n     *   }\n     * }\n     *\n     * @Component({\n     *   selector: 'giant-list',\n     *   template: `\n     *     <li *ngFor=\"let d of dataProvider.data\">Data {{d}}</li>\n     *   `,\n     * })\n     * class GiantList {\n     *   constructor(private ref: ChangeDetectorRef, private dataProvider: DataProvider) {\n     *     ref.detach();\n     *     setInterval(() => {\n     *       this.ref.detectChanges();\n     *     }, 5000);\n     *   }\n     * }\n     *\n     * @Component({\n     *   selector: 'app',\n     *   providers: [DataProvider],\n     *   template: `\n     *     <giant-list><giant-list>\n     *   `,\n     * })\n     * class App {\n     * }\n     * ```\n     */\n    detach() {\n        this._lView[FLAGS] &= ~64 /* LViewFlags.Attached */;\n    }\n    /**\n     * Re-attaches a view to the change detection tree.\n     *\n     * This can be used to re-attach views that were previously detached from the tree\n     * using {@link ChangeDetectorRef#detach detach}. Views are attached to the tree by default.\n     *\n     * <!-- TODO: Add a link to a chapter on detach/reattach/local digest -->\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * The following example creates a component displaying `live` data. The component will detach\n     * its change detector from the main change detector tree when the component's live property\n     * is set to false.\n     *\n     * ```typescript\n     * class DataProvider {\n     *   data = 1;\n     *\n     *   constructor() {\n     *     setInterval(() => {\n     *       this.data = this.data * 2;\n     *     }, 500);\n     *   }\n     * }\n     *\n     * @Component({\n     *   selector: 'live-data',\n     *   inputs: ['live'],\n     *   template: 'Data: {{dataProvider.data}}'\n     * })\n     * class LiveData {\n     *   constructor(private ref: ChangeDetectorRef, private dataProvider: DataProvider) {}\n     *\n     *   set live(value) {\n     *     if (value) {\n     *       this.ref.reattach();\n     *     } else {\n     *       this.ref.detach();\n     *     }\n     *   }\n     * }\n     *\n     * @Component({\n     *   selector: 'app-root',\n     *   providers: [DataProvider],\n     *   template: `\n     *     Live Update: <input type=\"checkbox\" [(ngModel)]=\"live\">\n     *     <live-data [live]=\"live\"><live-data>\n     *   `,\n     * })\n     * class AppComponent {\n     *   live = true;\n     * }\n     * ```\n     */\n    reattach() {\n        this._lView[FLAGS] |= 64 /* LViewFlags.Attached */;\n    }\n    /**\n     * Checks the view and its children.\n     *\n     * This can also be used in combination with {@link ChangeDetectorRef#detach detach} to implement\n     * local change detection checks.\n     *\n     * <!-- TODO: Add a link to a chapter on detach/reattach/local digest -->\n     * <!-- TODO: Add a live demo once ref.detectChanges is merged into master -->\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * The following example defines a component with a large list of readonly data.\n     * Imagine, the data changes constantly, many times per second. For performance reasons,\n     * we want to check and update the list every five seconds.\n     *\n     * We can do that by detaching the component's change detector and doing a local change detection\n     * check every five seconds.\n     *\n     * See {@link ChangeDetectorRef#detach detach} for more information.\n     */\n    detectChanges() {\n        detectChangesInternal(this._lView[TVIEW], this._lView, this.context);\n    }\n    /**\n     * Checks the change detector and its children, and throws if any changes are detected.\n     *\n     * This is used in development mode to verify that running change detection doesn't\n     * introduce other changes.\n     */\n    checkNoChanges() {\n        if (ngDevMode) {\n            checkNoChangesInternal(this._lView[TVIEW], this._lView, this.context);\n        }\n    }\n    attachToViewContainerRef() {\n        if (this._appRef) {\n            throw new RuntimeError(902 /* RuntimeErrorCode.VIEW_ALREADY_ATTACHED */, ngDevMode && 'This view is already attached directly to the ApplicationRef!');\n        }\n        this._attachedToViewContainer = true;\n    }\n    detachFromAppRef() {\n        this._appRef = null;\n        renderDetachView(this._lView[TVIEW], this._lView);\n    }\n    attachToAppRef(appRef) {\n        if (this._attachedToViewContainer) {\n            throw new RuntimeError(902 /* RuntimeErrorCode.VIEW_ALREADY_ATTACHED */, ngDevMode && 'This view is already attached to a ViewContainer!');\n        }\n        this._appRef = appRef;\n    }\n}\n/** @internal */\nclass RootViewRef extends ViewRef$1 {\n    constructor(_view) {\n        super(_view);\n        this._view = _view;\n    }\n    detectChanges() {\n        const lView = this._view;\n        const tView = lView[TVIEW];\n        const context = lView[CONTEXT];\n        detectChangesInternal(tView, lView, context, false);\n    }\n    checkNoChanges() {\n        if (ngDevMode) {\n            const lView = this._view;\n            const tView = lView[TVIEW];\n            const context = lView[CONTEXT];\n            checkNoChangesInternal(tView, lView, context, false);\n        }\n    }\n    get context() {\n        return null;\n    }\n}\n\nclass ComponentFactoryResolver extends ComponentFactoryResolver$1 {\n    /**\n     * @param ngModule The NgModuleRef to which all resolved factories are bound.\n     */\n    constructor(ngModule) {\n        super();\n        this.ngModule = ngModule;\n    }\n    resolveComponentFactory(component) {\n        ngDevMode && assertComponentType(component);\n        const componentDef = getComponentDef(component);\n        return new ComponentFactory(componentDef, this.ngModule);\n    }\n}\nfunction toRefArray(map) {\n    const array = [];\n    for (let nonMinified in map) {\n        if (map.hasOwnProperty(nonMinified)) {\n            const minified = map[nonMinified];\n            array.push({ propName: minified, templateName: nonMinified });\n        }\n    }\n    return array;\n}\nfunction getNamespace(elementName) {\n    const name = elementName.toLowerCase();\n    return name === 'svg' ? SVG_NAMESPACE : (name === 'math' ? MATH_ML_NAMESPACE : null);\n}\n/**\n * Injector that looks up a value using a specific injector, before falling back to the module\n * injector. Used primarily when creating components or embedded views dynamically.\n */\nclass ChainedInjector {\n    constructor(injector, parentInjector) {\n        this.injector = injector;\n        this.parentInjector = parentInjector;\n    }\n    get(token, notFoundValue, flags) {\n        flags = convertToBitFlags(flags);\n        const value = this.injector.get(token, NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR, flags);\n        if (value !== NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR ||\n            notFoundValue === NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR) {\n            // Return the value from the root element injector when\n            // - it provides it\n            //   (value !== NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR)\n            // - the module injector should not be checked\n            //   (notFoundValue === NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR)\n            return value;\n        }\n        return this.parentInjector.get(token, notFoundValue, flags);\n    }\n}\n/**\n * ComponentFactory interface implementation.\n */\nclass ComponentFactory extends ComponentFactory$1 {\n    get inputs() {\n        return toRefArray(this.componentDef.inputs);\n    }\n    get outputs() {\n        return toRefArray(this.componentDef.outputs);\n    }\n    /**\n     * @param componentDef The component definition.\n     * @param ngModule The NgModuleRef to which the factory is bound.\n     */\n    constructor(componentDef, ngModule) {\n        super();\n        this.componentDef = componentDef;\n        this.ngModule = ngModule;\n        this.componentType = componentDef.type;\n        this.selector = stringifyCSSSelectorList(componentDef.selectors);\n        this.ngContentSelectors =\n            componentDef.ngContentSelectors ? componentDef.ngContentSelectors : [];\n        this.isBoundToModule = !!ngModule;\n    }\n    create(injector, projectableNodes, rootSelectorOrNode, environmentInjector) {\n        environmentInjector = environmentInjector || this.ngModule;\n        let realEnvironmentInjector = environmentInjector instanceof EnvironmentInjector ?\n            environmentInjector :\n            environmentInjector?.injector;\n        if (realEnvironmentInjector && this.componentDef.getStandaloneInjector !== null) {\n            realEnvironmentInjector = this.componentDef.getStandaloneInjector(realEnvironmentInjector) ||\n                realEnvironmentInjector;\n        }\n        const rootViewInjector = realEnvironmentInjector ? new ChainedInjector(injector, realEnvironmentInjector) : injector;\n        const rendererFactory = rootViewInjector.get(RendererFactory2, null);\n        if (rendererFactory === null) {\n            throw new RuntimeError(407 /* RuntimeErrorCode.RENDERER_NOT_FOUND */, ngDevMode &&\n                'Angular was not able to inject a renderer (RendererFactory2). ' +\n                    'Likely this is due to a broken DI hierarchy. ' +\n                    'Make sure that any injector used to create this component has a correct parent.');\n        }\n        const sanitizer = rootViewInjector.get(Sanitizer, null);\n        const hostRenderer = rendererFactory.createRenderer(null, this.componentDef);\n        // Determine a tag name used for creating host elements when this component is created\n        // dynamically. Default to 'div' if this component did not specify any tag name in its selector.\n        const elementName = this.componentDef.selectors[0][0] || 'div';\n        const hostRNode = rootSelectorOrNode ?\n            locateHostElement(hostRenderer, rootSelectorOrNode, this.componentDef.encapsulation) :\n            createElementNode(hostRenderer, elementName, getNamespace(elementName));\n        const rootFlags = this.componentDef.onPush ? 32 /* LViewFlags.Dirty */ | 256 /* LViewFlags.IsRoot */ :\n            16 /* LViewFlags.CheckAlways */ | 256 /* LViewFlags.IsRoot */;\n        // Create the root view. Uses empty TView and ContentTemplate.\n        const rootTView = createTView(0 /* TViewType.Root */, null, null, 1, 0, null, null, null, null, null);\n        const rootLView = createLView(null, rootTView, null, rootFlags, null, null, rendererFactory, hostRenderer, sanitizer, rootViewInjector, null);\n        // rootView is the parent when bootstrapping\n        // TODO(misko): it looks like we are entering view here but we don't really need to as\n        // `renderView` does that. However as the code is written it is needed because\n        // `createRootComponentView` and `createRootComponent` both read global state. Fixing those\n        // issues would allow us to drop this.\n        enterView(rootLView);\n        let component;\n        let tElementNode;\n        try {\n            const rootComponentDef = this.componentDef;\n            let rootDirectives;\n            let hostDirectiveDefs = null;\n            if (rootComponentDef.findHostDirectiveDefs) {\n                rootDirectives = [];\n                hostDirectiveDefs = new Map();\n                rootComponentDef.findHostDirectiveDefs(rootComponentDef, rootDirectives, hostDirectiveDefs);\n                rootDirectives.push(rootComponentDef);\n            }\n            else {\n                rootDirectives = [rootComponentDef];\n            }\n            const hostTNode = createRootComponentTNode(rootLView, hostRNode);\n            const componentView = createRootComponentView(hostTNode, hostRNode, rootComponentDef, rootDirectives, rootLView, rendererFactory, hostRenderer);\n            tElementNode = getTNode(rootTView, HEADER_OFFSET);\n            // TODO(crisbeto): in practice `hostRNode` should always be defined, but there are some tests\n            // where the renderer is mocked out and `undefined` is returned. We should update the tests so\n            // that this check can be removed.\n            if (hostRNode) {\n                setRootNodeAttributes(hostRenderer, rootComponentDef, hostRNode, rootSelectorOrNode);\n            }\n            if (projectableNodes !== undefined) {\n                projectNodes(tElementNode, this.ngContentSelectors, projectableNodes);\n            }\n            // TODO: should LifecycleHooksFeature and other host features be generated by the compiler and\n            // executed here?\n            // Angular 5 reference: https://stackblitz.com/edit/lifecycle-hooks-vcref\n            component = createRootComponent(componentView, rootComponentDef, rootDirectives, hostDirectiveDefs, rootLView, [LifecycleHooksFeature]);\n            renderView(rootTView, rootLView, null);\n        }\n        finally {\n            leaveView();\n        }\n        return new ComponentRef(this.componentType, component, createElementRef(tElementNode, rootLView), rootLView, tElementNode);\n    }\n}\n/**\n * Represents an instance of a Component created via a {@link ComponentFactory}.\n *\n * `ComponentRef` provides access to the Component Instance as well other objects related to this\n * Component Instance and allows you to destroy the Component Instance via the {@link #destroy}\n * method.\n *\n */\nclass ComponentRef extends ComponentRef$1 {\n    constructor(componentType, instance, location, _rootLView, _tNode) {\n        super();\n        this.location = location;\n        this._rootLView = _rootLView;\n        this._tNode = _tNode;\n        this.instance = instance;\n        this.hostView = this.changeDetectorRef = new RootViewRef(_rootLView);\n        this.componentType = componentType;\n    }\n    setInput(name, value) {\n        const inputData = this._tNode.inputs;\n        let dataValue;\n        if (inputData !== null && (dataValue = inputData[name])) {\n            const lView = this._rootLView;\n            setInputsForProperty(lView[TVIEW], lView, dataValue, name, value);\n            const childComponentLView = getComponentLViewByIndex(this._tNode.index, lView);\n            markViewDirty(childComponentLView);\n        }\n        else {\n            if (ngDevMode) {\n                const cmpNameForError = stringifyForError(this.componentType);\n                let message = `Can't set value of the '${name}' input on the '${cmpNameForError}' component. `;\n                message += `Make sure that the '${name}' property is annotated with @Input() or a mapped @Input('${name}') exists.`;\n                reportUnknownPropertyError(message);\n            }\n        }\n    }\n    get injector() {\n        return new NodeInjector(this._tNode, this._rootLView);\n    }\n    destroy() {\n        this.hostView.destroy();\n    }\n    onDestroy(callback) {\n        this.hostView.onDestroy(callback);\n    }\n}\n// TODO: A hack to not pull in the NullInjector from @angular/core.\nconst NULL_INJECTOR = {\n    get: (token, notFoundValue) => {\n        throwProviderNotFoundError(token, 'NullInjector');\n    }\n};\n/** Creates a TNode that can be used to instantiate a root component. */\nfunction createRootComponentTNode(lView, rNode) {\n    const tView = lView[TVIEW];\n    const index = HEADER_OFFSET;\n    ngDevMode && assertIndexInRange(lView, index);\n    lView[index] = rNode;\n    // '#host' is added here as we don't know the real host DOM name (we don't want to read it) and at\n    // the same time we want to communicate the debug `TNode` that this is a special `TNode`\n    // representing a host element.\n    return getOrCreateTNode(tView, index, 2 /* TNodeType.Element */, '#host', null);\n}\n/**\n * Creates the root component view and the root component node.\n *\n * @param rNode Render host element.\n * @param rootComponentDef ComponentDef\n * @param rootView The parent view where the host node is stored\n * @param rendererFactory Factory to be used for creating child renderers.\n * @param hostRenderer The current renderer\n * @param sanitizer The sanitizer, if provided\n *\n * @returns Component view created\n */\nfunction createRootComponentView(tNode, rNode, rootComponentDef, rootDirectives, rootView, rendererFactory, hostRenderer, sanitizer) {\n    const tView = rootView[TVIEW];\n    applyRootComponentStyling(rootDirectives, tNode, rNode, hostRenderer);\n    const viewRenderer = rendererFactory.createRenderer(rNode, rootComponentDef);\n    const componentView = createLView(rootView, getOrCreateComponentTView(rootComponentDef), null, rootComponentDef.onPush ? 32 /* LViewFlags.Dirty */ : 16 /* LViewFlags.CheckAlways */, rootView[tNode.index], tNode, rendererFactory, viewRenderer, sanitizer || null, null, null);\n    if (tView.firstCreatePass) {\n        markAsComponentHost(tView, tNode, rootDirectives.length - 1);\n    }\n    addToViewTree(rootView, componentView);\n    // Store component view at node index, with node as the HOST\n    return rootView[tNode.index] = componentView;\n}\n/** Sets up the styling information on a root component. */\nfunction applyRootComponentStyling(rootDirectives, tNode, rNode, hostRenderer) {\n    for (const def of rootDirectives) {\n        tNode.mergedAttrs = mergeHostAttrs(tNode.mergedAttrs, def.hostAttrs);\n    }\n    if (tNode.mergedAttrs !== null) {\n        computeStaticStyling(tNode, tNode.mergedAttrs, true);\n        if (rNode !== null) {\n            setupStaticAttributes(hostRenderer, rNode, tNode);\n        }\n    }\n}\n/**\n * Creates a root component and sets it up with features and host bindings.Shared by\n * renderComponent() and ViewContainerRef.createComponent().\n */\nfunction createRootComponent(componentView, rootComponentDef, rootDirectives, hostDirectiveDefs, rootLView, hostFeatures) {\n    const rootTNode = getCurrentTNode();\n    ngDevMode && assertDefined(rootTNode, 'tNode should have been already created');\n    const tView = rootLView[TVIEW];\n    const native = getNativeByTNode(rootTNode, rootLView);\n    initializeDirectives(tView, rootLView, rootTNode, rootDirectives, null, hostDirectiveDefs);\n    for (let i = 0; i < rootDirectives.length; i++) {\n        const directiveIndex = rootTNode.directiveStart + i;\n        const directiveInstance = getNodeInjectable(rootLView, tView, directiveIndex, rootTNode);\n        attachPatchData(directiveInstance, rootLView);\n    }\n    invokeDirectivesHostBindings(tView, rootLView, rootTNode);\n    if (native) {\n        attachPatchData(native, rootLView);\n    }\n    // We're guaranteed for the `componentOffset` to be positive here\n    // since a root component always matches a component def.\n    ngDevMode &&\n        assertGreaterThan(rootTNode.componentOffset, -1, 'componentOffset must be great than -1');\n    const component = getNodeInjectable(rootLView, tView, rootTNode.directiveStart + rootTNode.componentOffset, rootTNode);\n    componentView[CONTEXT] = rootLView[CONTEXT] = component;\n    if (hostFeatures !== null) {\n        for (const feature of hostFeatures) {\n            feature(component, rootComponentDef);\n        }\n    }\n    // We want to generate an empty QueryList for root content queries for backwards\n    // compatibility with ViewEngine.\n    executeContentQueries(tView, rootTNode, componentView);\n    return component;\n}\n/** Sets the static attributes on a root component. */\nfunction setRootNodeAttributes(hostRenderer, componentDef, hostRNode, rootSelectorOrNode) {\n    if (rootSelectorOrNode) {\n        setUpAttributes(hostRenderer, hostRNode, ['ng-version', VERSION.full]);\n    }\n    else {\n        // If host element is created as a part of this function call (i.e. `rootSelectorOrNode`\n        // is not defined), also apply attributes and classes extracted from component selector.\n        // Extract attributes and classes from the first selector only to match VE behavior.\n        const { attrs, classes } = extractAttrsAndClassesFromSelector(componentDef.selectors[0]);\n        if (attrs) {\n            setUpAttributes(hostRenderer, hostRNode, attrs);\n        }\n        if (classes && classes.length > 0) {\n            writeDirectClass(hostRenderer, hostRNode, classes.join(' '));\n        }\n    }\n}\n/** Projects the `projectableNodes` that were specified when creating a root component. */\nfunction projectNodes(tNode, ngContentSelectors, projectableNodes) {\n    const projection = tNode.projection = [];\n    for (let i = 0; i < ngContentSelectors.length; i++) {\n        const nodesforSlot = projectableNodes[i];\n        // Projectable nodes can be passed as array of arrays or an array of iterables (ngUpgrade\n        // case). Here we do normalize passed data structure to be an array of arrays to avoid\n        // complex checks down the line.\n        // We also normalize the length of the passed in projectable nodes (to match the number of\n        // <ng-container> slots defined by a component).\n        projection.push(nodesforSlot != null ? Array.from(nodesforSlot) : null);\n    }\n}\n/**\n * Used to enable lifecycle hooks on the root component.\n *\n * Include this feature when calling `renderComponent` if the root component\n * you are rendering has lifecycle hooks defined. Otherwise, the hooks won't\n * be called properly.\n *\n * Example:\n *\n * ```\n * renderComponent(AppComponent, {hostFeatures: [LifecycleHooksFeature]});\n * ```\n */\nfunction LifecycleHooksFeature() {\n    const tNode = getCurrentTNode();\n    ngDevMode && assertDefined(tNode, 'TNode is required');\n    registerPostOrderHooks(getLView()[TVIEW], tNode);\n}\n\nfunction getSuperType(type) {\n    return Object.getPrototypeOf(type.prototype).constructor;\n}\n/**\n * Merges the definition from a super class to a sub class.\n * @param definition The definition that is a SubClass of another directive of component\n *\n * @codeGenApi\n */\nfunction ɵɵInheritDefinitionFeature(definition) {\n    let superType = getSuperType(definition.type);\n    let shouldInheritFields = true;\n    const inheritanceChain = [definition];\n    while (superType) {\n        let superDef = undefined;\n        if (isComponentDef(definition)) {\n            // Don't use getComponentDef/getDirectiveDef. This logic relies on inheritance.\n            superDef = superType.ɵcmp || superType.ɵdir;\n        }\n        else {\n            if (superType.ɵcmp) {\n                throw new RuntimeError(903 /* RuntimeErrorCode.INVALID_INHERITANCE */, ngDevMode &&\n                    `Directives cannot inherit Components. Directive ${stringifyForError(definition.type)} is attempting to extend component ${stringifyForError(superType)}`);\n            }\n            // Don't use getComponentDef/getDirectiveDef. This logic relies on inheritance.\n            superDef = superType.ɵdir;\n        }\n        if (superDef) {\n            if (shouldInheritFields) {\n                inheritanceChain.push(superDef);\n                // Some fields in the definition may be empty, if there were no values to put in them that\n                // would've justified object creation. Unwrap them if necessary.\n                const writeableDef = definition;\n                writeableDef.inputs = maybeUnwrapEmpty(definition.inputs);\n                writeableDef.declaredInputs = maybeUnwrapEmpty(definition.declaredInputs);\n                writeableDef.outputs = maybeUnwrapEmpty(definition.outputs);\n                // Merge hostBindings\n                const superHostBindings = superDef.hostBindings;\n                superHostBindings && inheritHostBindings(definition, superHostBindings);\n                // Merge queries\n                const superViewQuery = superDef.viewQuery;\n                const superContentQueries = superDef.contentQueries;\n                superViewQuery && inheritViewQuery(definition, superViewQuery);\n                superContentQueries && inheritContentQueries(definition, superContentQueries);\n                // Merge inputs and outputs\n                fillProperties(definition.inputs, superDef.inputs);\n                fillProperties(definition.declaredInputs, superDef.declaredInputs);\n                fillProperties(definition.outputs, superDef.outputs);\n                // Merge animations metadata.\n                // If `superDef` is a Component, the `data` field is present (defaults to an empty object).\n                if (isComponentDef(superDef) && superDef.data.animation) {\n                    // If super def is a Component, the `definition` is also a Component, since Directives can\n                    // not inherit Components (we throw an error above and cannot reach this code).\n                    const defData = definition.data;\n                    defData.animation = (defData.animation || []).concat(superDef.data.animation);\n                }\n            }\n            // Run parent features\n            const features = superDef.features;\n            if (features) {\n                for (let i = 0; i < features.length; i++) {\n                    const feature = features[i];\n                    if (feature && feature.ngInherit) {\n                        feature(definition);\n                    }\n                    // If `InheritDefinitionFeature` is a part of the current `superDef`, it means that this\n                    // def already has all the necessary information inherited from its super class(es), so we\n                    // can stop merging fields from super classes. However we need to iterate through the\n                    // prototype chain to look for classes that might contain other \"features\" (like\n                    // NgOnChanges), which we should invoke for the original `definition`. We set the\n                    // `shouldInheritFields` flag to indicate that, essentially skipping fields inheritance\n                    // logic and only invoking functions from the \"features\" list.\n                    if (feature === ɵɵInheritDefinitionFeature) {\n                        shouldInheritFields = false;\n                    }\n                }\n            }\n        }\n        superType = Object.getPrototypeOf(superType);\n    }\n    mergeHostAttrsAcrossInheritance(inheritanceChain);\n}\n/**\n * Merge the `hostAttrs` and `hostVars` from the inherited parent to the base class.\n *\n * @param inheritanceChain A list of `WritableDefs` starting at the top most type and listing\n * sub-types in order. For each type take the `hostAttrs` and `hostVars` and merge it with the child\n * type.\n */\nfunction mergeHostAttrsAcrossInheritance(inheritanceChain) {\n    let hostVars = 0;\n    let hostAttrs = null;\n    // We process the inheritance order from the base to the leaves here.\n    for (let i = inheritanceChain.length - 1; i >= 0; i--) {\n        const def = inheritanceChain[i];\n        // For each `hostVars`, we need to add the superclass amount.\n        def.hostVars = (hostVars += def.hostVars);\n        // for each `hostAttrs` we need to merge it with superclass.\n        def.hostAttrs =\n            mergeHostAttrs(def.hostAttrs, hostAttrs = mergeHostAttrs(hostAttrs, def.hostAttrs));\n    }\n}\nfunction maybeUnwrapEmpty(value) {\n    if (value === EMPTY_OBJ) {\n        return {};\n    }\n    else if (value === EMPTY_ARRAY) {\n        return [];\n    }\n    else {\n        return value;\n    }\n}\nfunction inheritViewQuery(definition, superViewQuery) {\n    const prevViewQuery = definition.viewQuery;\n    if (prevViewQuery) {\n        definition.viewQuery = (rf, ctx) => {\n            superViewQuery(rf, ctx);\n            prevViewQuery(rf, ctx);\n        };\n    }\n    else {\n        definition.viewQuery = superViewQuery;\n    }\n}\nfunction inheritContentQueries(definition, superContentQueries) {\n    const prevContentQueries = definition.contentQueries;\n    if (prevContentQueries) {\n        definition.contentQueries = (rf, ctx, directiveIndex) => {\n            superContentQueries(rf, ctx, directiveIndex);\n            prevContentQueries(rf, ctx, directiveIndex);\n        };\n    }\n    else {\n        definition.contentQueries = superContentQueries;\n    }\n}\nfunction inheritHostBindings(definition, superHostBindings) {\n    const prevHostBindings = definition.hostBindings;\n    if (prevHostBindings) {\n        definition.hostBindings = (rf, ctx) => {\n            superHostBindings(rf, ctx);\n            prevHostBindings(rf, ctx);\n        };\n    }\n    else {\n        definition.hostBindings = superHostBindings;\n    }\n}\n\n/**\n * Fields which exist on either directive or component definitions, and need to be copied from\n * parent to child classes by the `ɵɵCopyDefinitionFeature`.\n */\nconst COPY_DIRECTIVE_FIELDS = [\n    // The child class should use the providers of its parent.\n    'providersResolver',\n    // Not listed here are any fields which are handled by the `ɵɵInheritDefinitionFeature`, such\n    // as inputs, outputs, and host binding functions.\n];\n/**\n * Fields which exist only on component definitions, and need to be copied from parent to child\n * classes by the `ɵɵCopyDefinitionFeature`.\n *\n * The type here allows any field of `ComponentDef` which is not also a property of `DirectiveDef`,\n * since those should go in `COPY_DIRECTIVE_FIELDS` above.\n */\nconst COPY_COMPONENT_FIELDS = [\n    // The child class should use the template function of its parent, including all template\n    // semantics.\n    'template',\n    'decls',\n    'consts',\n    'vars',\n    'onPush',\n    'ngContentSelectors',\n    // The child class should use the CSS styles of its parent, including all styling semantics.\n    'styles',\n    'encapsulation',\n    // The child class should be checked by the runtime in the same way as its parent.\n    'schemas',\n];\n/**\n * Copies the fields not handled by the `ɵɵInheritDefinitionFeature` from the supertype of a\n * definition.\n *\n * This exists primarily to support ngcc migration of an existing View Engine pattern, where an\n * entire decorator is inherited from a parent to a child class. When ngcc detects this case, it\n * generates a skeleton definition on the child class, and applies this feature.\n *\n * The `ɵɵCopyDefinitionFeature` then copies any needed fields from the parent class' definition,\n * including things like the component template function.\n *\n * @param definition The definition of a child class which inherits from a parent class with its\n * own definition.\n *\n * @codeGenApi\n */\nfunction ɵɵCopyDefinitionFeature(definition) {\n    let superType = getSuperType(definition.type);\n    let superDef = undefined;\n    if (isComponentDef(definition)) {\n        // Don't use getComponentDef/getDirectiveDef. This logic relies on inheritance.\n        superDef = superType.ɵcmp;\n    }\n    else {\n        // Don't use getComponentDef/getDirectiveDef. This logic relies on inheritance.\n        superDef = superType.ɵdir;\n    }\n    // Needed because `definition` fields are readonly.\n    const defAny = definition;\n    // Copy over any fields that apply to either directives or components.\n    for (const field of COPY_DIRECTIVE_FIELDS) {\n        defAny[field] = superDef[field];\n    }\n    if (isComponentDef(superDef)) {\n        // Copy over any component-specific fields.\n        for (const field of COPY_COMPONENT_FIELDS) {\n            defAny[field] = superDef[field];\n        }\n    }\n}\n\n/**\n * This feature adds the host directives behavior to a directive definition by patching a\n * function onto it. The expectation is that the runtime will invoke the function during\n * directive matching.\n *\n * For example:\n * ```ts\n * class ComponentWithHostDirective {\n *   static ɵcmp = defineComponent({\n *    type: ComponentWithHostDirective,\n *    features: [ɵɵHostDirectivesFeature([\n *      SimpleHostDirective,\n *      {directive: AdvancedHostDirective, inputs: ['foo: alias'], outputs: ['bar']},\n *    ])]\n *  });\n * }\n * ```\n *\n * @codeGenApi\n */\nfunction ɵɵHostDirectivesFeature(rawHostDirectives) {\n    return (definition) => {\n        definition.findHostDirectiveDefs = findHostDirectiveDefs;\n        definition.hostDirectives =\n            (Array.isArray(rawHostDirectives) ? rawHostDirectives : rawHostDirectives()).map(dir => {\n                return typeof dir === 'function' ?\n                    { directive: resolveForwardRef(dir), inputs: EMPTY_OBJ, outputs: EMPTY_OBJ } :\n                    {\n                        directive: resolveForwardRef(dir.directive),\n                        inputs: bindingArrayToMap(dir.inputs),\n                        outputs: bindingArrayToMap(dir.outputs)\n                    };\n            });\n    };\n}\nfunction findHostDirectiveDefs(currentDef, matchedDefs, hostDirectiveDefs) {\n    if (currentDef.hostDirectives !== null) {\n        for (const hostDirectiveConfig of currentDef.hostDirectives) {\n            const hostDirectiveDef = getDirectiveDef(hostDirectiveConfig.directive);\n            if (typeof ngDevMode === 'undefined' || ngDevMode) {\n                validateHostDirective(hostDirectiveConfig, hostDirectiveDef, matchedDefs);\n            }\n            // We need to patch the `declaredInputs` so that\n            // `ngOnChanges` can map the properties correctly.\n            patchDeclaredInputs(hostDirectiveDef.declaredInputs, hostDirectiveConfig.inputs);\n            // Host directives execute before the host so that its host bindings can be overwritten.\n            findHostDirectiveDefs(hostDirectiveDef, matchedDefs, hostDirectiveDefs);\n            hostDirectiveDefs.set(hostDirectiveDef, hostDirectiveConfig);\n            matchedDefs.push(hostDirectiveDef);\n        }\n    }\n}\n/**\n * Converts an array in the form of `['publicName', 'alias', 'otherPublicName', 'otherAlias']` into\n * a map in the form of `{publicName: 'alias', otherPublicName: 'otherAlias'}`.\n */\nfunction bindingArrayToMap(bindings) {\n    if (bindings === undefined || bindings.length === 0) {\n        return EMPTY_OBJ;\n    }\n    const result = {};\n    for (let i = 0; i < bindings.length; i += 2) {\n        result[bindings[i]] = bindings[i + 1];\n    }\n    return result;\n}\n/**\n * `ngOnChanges` has some leftover legacy ViewEngine behavior where the keys inside the\n * `SimpleChanges` event refer to the *declared* name of the input, not its public name or its\n * minified name. E.g. in `@Input('alias') foo: string`, the name in the `SimpleChanges` object\n * will always be `foo`, and not `alias` or the minified name of `foo` in apps using property\n * minification.\n *\n * This is achieved through the `DirectiveDef.declaredInputs` map that is constructed when the\n * definition is declared. When a property is written to the directive instance, the\n * `NgOnChangesFeature` will try to remap the property name being written to using the\n * `declaredInputs`.\n *\n * Since the host directive input remapping happens during directive matching, `declaredInputs`\n * won't contain the new alias that the input is available under. This function addresses the\n * issue by patching the host directive aliases to the `declaredInputs`. There is *not* a risk of\n * this patching accidentally introducing new inputs to the host directive, because `declaredInputs`\n * is used *only* by the `NgOnChangesFeature` when determining what name is used in the\n * `SimpleChanges` object which won't be reached if an input doesn't exist.\n */\nfunction patchDeclaredInputs(declaredInputs, exposedInputs) {\n    for (const publicName in exposedInputs) {\n        if (exposedInputs.hasOwnProperty(publicName)) {\n            const remappedPublicName = exposedInputs[publicName];\n            const privateName = declaredInputs[publicName];\n            // We *technically* shouldn't be able to hit this case because we can't have multiple\n            // inputs on the same property and we have validations against conflicting aliases in\n            // `validateMappings`. If we somehow did, it would lead to `ngOnChanges` being invoked\n            // with the wrong name so we have a non-user-friendly assertion here just in case.\n            if ((typeof ngDevMode === 'undefined' || ngDevMode) &&\n                declaredInputs.hasOwnProperty(remappedPublicName)) {\n                assertEqual(declaredInputs[remappedPublicName], declaredInputs[publicName], `Conflicting host directive input alias ${publicName}.`);\n            }\n            declaredInputs[remappedPublicName] = privateName;\n        }\n    }\n}\n/**\n * Verifies that the host directive has been configured correctly.\n * @param hostDirectiveConfig Host directive configuration object.\n * @param directiveDef Directive definition of the host directive.\n * @param matchedDefs Directives that have been matched so far.\n */\nfunction validateHostDirective(hostDirectiveConfig, directiveDef, matchedDefs) {\n    const type = hostDirectiveConfig.directive;\n    if (directiveDef === null) {\n        if (getComponentDef(type) !== null) {\n            throw new RuntimeError(310 /* RuntimeErrorCode.HOST_DIRECTIVE_COMPONENT */, `Host directive ${type.name} cannot be a component.`);\n        }\n        throw new RuntimeError(307 /* RuntimeErrorCode.HOST_DIRECTIVE_UNRESOLVABLE */, `Could not resolve metadata for host directive ${type.name}. ` +\n            `Make sure that the ${type.name} class is annotated with an @Directive decorator.`);\n    }\n    if (!directiveDef.standalone) {\n        throw new RuntimeError(308 /* RuntimeErrorCode.HOST_DIRECTIVE_NOT_STANDALONE */, `Host directive ${directiveDef.type.name} must be standalone.`);\n    }\n    if (matchedDefs.indexOf(directiveDef) > -1) {\n        throw new RuntimeError(309 /* RuntimeErrorCode.DUPLICATE_DIRECTITVE */, `Directive ${directiveDef.type.name} matches multiple times on the same element. ` +\n            `Directives can only match an element once.`);\n    }\n    validateMappings('input', directiveDef, hostDirectiveConfig.inputs);\n    validateMappings('output', directiveDef, hostDirectiveConfig.outputs);\n}\n/**\n * Checks that the host directive inputs/outputs configuration is valid.\n * @param bindingType Kind of binding that is being validated. Used in the error message.\n * @param def Definition of the host directive that is being validated against.\n * @param hostDirectiveBindings Host directive mapping object that shold be validated.\n */\nfunction validateMappings(bindingType, def, hostDirectiveBindings) {\n    const className = def.type.name;\n    const bindings = bindingType === 'input' ? def.inputs : def.outputs;\n    for (const publicName in hostDirectiveBindings) {\n        if (hostDirectiveBindings.hasOwnProperty(publicName)) {\n            if (!bindings.hasOwnProperty(publicName)) {\n                throw new RuntimeError(311 /* RuntimeErrorCode.HOST_DIRECTIVE_UNDEFINED_BINDING */, `Directive ${className} does not have an ${bindingType} with a public name of ${publicName}.`);\n            }\n            const remappedPublicName = hostDirectiveBindings[publicName];\n            if (bindings.hasOwnProperty(remappedPublicName) &&\n                bindings[remappedPublicName] !== publicName) {\n                throw new RuntimeError(312 /* RuntimeErrorCode.HOST_DIRECTIVE_CONFLICTING_ALIAS */, `Cannot alias ${bindingType} ${publicName} of host directive ${className} to ${remappedPublicName}, because it already has a different ${bindingType} with the same public name.`);\n            }\n        }\n    }\n}\n\nfunction isIterable(obj) {\n    return obj !== null && typeof obj === 'object' && obj[Symbol.iterator] !== undefined;\n}\nfunction isListLikeIterable(obj) {\n    if (!isJsObject(obj))\n        return false;\n    return Array.isArray(obj) ||\n        (!(obj instanceof Map) && // JS Map are iterables but return entries as [k, v]\n            Symbol.iterator in obj); // JS Iterable have a Symbol.iterator prop\n}\nfunction areIterablesEqual(a, b, comparator) {\n    const iterator1 = a[Symbol.iterator]();\n    const iterator2 = b[Symbol.iterator]();\n    while (true) {\n        const item1 = iterator1.next();\n        const item2 = iterator2.next();\n        if (item1.done && item2.done)\n            return true;\n        if (item1.done || item2.done)\n            return false;\n        if (!comparator(item1.value, item2.value))\n            return false;\n    }\n}\nfunction iterateListLike(obj, fn) {\n    if (Array.isArray(obj)) {\n        for (let i = 0; i < obj.length; i++) {\n            fn(obj[i]);\n        }\n    }\n    else {\n        const iterator = obj[Symbol.iterator]();\n        let item;\n        while (!((item = iterator.next()).done)) {\n            fn(item.value);\n        }\n    }\n}\nfunction isJsObject(o) {\n    return o !== null && (typeof o === 'function' || typeof o === 'object');\n}\n\nfunction devModeEqual(a, b) {\n    const isListLikeIterableA = isListLikeIterable(a);\n    const isListLikeIterableB = isListLikeIterable(b);\n    if (isListLikeIterableA && isListLikeIterableB) {\n        return areIterablesEqual(a, b, devModeEqual);\n    }\n    else {\n        const isAObject = a && (typeof a === 'object' || typeof a === 'function');\n        const isBObject = b && (typeof b === 'object' || typeof b === 'function');\n        if (!isListLikeIterableA && isAObject && !isListLikeIterableB && isBObject) {\n            return true;\n        }\n        else {\n            return Object.is(a, b);\n        }\n    }\n}\n\n// TODO(misko): consider inlining\n/** Updates binding and returns the value. */\nfunction updateBinding(lView, bindingIndex, value) {\n    return lView[bindingIndex] = value;\n}\n/** Gets the current binding value. */\nfunction getBinding(lView, bindingIndex) {\n    ngDevMode && assertIndexInRange(lView, bindingIndex);\n    ngDevMode &&\n        assertNotSame(lView[bindingIndex], NO_CHANGE, 'Stored value should never be NO_CHANGE.');\n    return lView[bindingIndex];\n}\n/**\n * Updates binding if changed, then returns whether it was updated.\n *\n * This function also checks the `CheckNoChangesMode` and throws if changes are made.\n * Some changes (Objects/iterables) during `CheckNoChangesMode` are exempt to comply with VE\n * behavior.\n *\n * @param lView current `LView`\n * @param bindingIndex The binding in the `LView` to check\n * @param value New value to check against `lView[bindingIndex]`\n * @returns `true` if the bindings has changed. (Throws if binding has changed during\n *          `CheckNoChangesMode`)\n */\nfunction bindingUpdated(lView, bindingIndex, value) {\n    ngDevMode && assertNotSame(value, NO_CHANGE, 'Incoming value should never be NO_CHANGE.');\n    ngDevMode &&\n        assertLessThan(bindingIndex, lView.length, `Slot should have been initialized to NO_CHANGE`);\n    const oldValue = lView[bindingIndex];\n    if (Object.is(oldValue, value)) {\n        return false;\n    }\n    else {\n        if (ngDevMode && isInCheckNoChangesMode()) {\n            // View engine didn't report undefined values as changed on the first checkNoChanges pass\n            // (before the change detection was run).\n            const oldValueToCompare = oldValue !== NO_CHANGE ? oldValue : undefined;\n            if (!devModeEqual(oldValueToCompare, value)) {\n                const details = getExpressionChangedErrorDetails(lView, bindingIndex, oldValueToCompare, value);\n                throwErrorIfNoChangesMode(oldValue === NO_CHANGE, details.oldValue, details.newValue, details.propName);\n            }\n            // There was a change, but the `devModeEqual` decided that the change is exempt from an error.\n            // For this reason we exit as if no change. The early exit is needed to prevent the changed\n            // value to be written into `LView` (If we would write the new value that we would not see it\n            // as change on next CD.)\n            return false;\n        }\n        lView[bindingIndex] = value;\n        return true;\n    }\n}\n/** Updates 2 bindings if changed, then returns whether either was updated. */\nfunction bindingUpdated2(lView, bindingIndex, exp1, exp2) {\n    const different = bindingUpdated(lView, bindingIndex, exp1);\n    return bindingUpdated(lView, bindingIndex + 1, exp2) || different;\n}\n/** Updates 3 bindings if changed, then returns whether any was updated. */\nfunction bindingUpdated3(lView, bindingIndex, exp1, exp2, exp3) {\n    const different = bindingUpdated2(lView, bindingIndex, exp1, exp2);\n    return bindingUpdated(lView, bindingIndex + 2, exp3) || different;\n}\n/** Updates 4 bindings if changed, then returns whether any was updated. */\nfunction bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4) {\n    const different = bindingUpdated2(lView, bindingIndex, exp1, exp2);\n    return bindingUpdated2(lView, bindingIndex + 2, exp3, exp4) || different;\n}\n\n/**\n * Updates the value of or removes a bound attribute on an Element.\n *\n * Used in the case of `[attr.title]=\"value\"`\n *\n * @param name name The name of the attribute.\n * @param value value The attribute is removed when value is `null` or `undefined`.\n *                  Otherwise the attribute value is set to the stringified value.\n * @param sanitizer An optional function used to sanitize the value.\n * @param namespace Optional namespace to use when setting the attribute.\n *\n * @codeGenApi\n */\nfunction ɵɵattribute(name, value, sanitizer, namespace) {\n    const lView = getLView();\n    const bindingIndex = nextBindingIndex();\n    if (bindingUpdated(lView, bindingIndex, value)) {\n        const tView = getTView();\n        const tNode = getSelectedTNode();\n        elementAttributeInternal(tNode, lView, name, value, sanitizer, namespace);\n        ngDevMode && storePropertyBindingMetadata(tView.data, tNode, 'attr.' + name, bindingIndex);\n    }\n    return ɵɵattribute;\n}\n\n/**\n * Create interpolation bindings with a variable number of expressions.\n *\n * If there are 1 to 8 expressions `interpolation1()` to `interpolation8()` should be used instead.\n * Those are faster because there is no need to create an array of expressions and iterate over it.\n *\n * `values`:\n * - has static text at even indexes,\n * - has evaluated expressions at odd indexes.\n *\n * Returns the concatenated string when any of the arguments changes, `NO_CHANGE` otherwise.\n */\nfunction interpolationV(lView, values) {\n    ngDevMode && assertLessThan(2, values.length, 'should have at least 3 values');\n    ngDevMode && assertEqual(values.length % 2, 1, 'should have an odd number of values');\n    let isBindingUpdated = false;\n    let bindingIndex = getBindingIndex();\n    for (let i = 1; i < values.length; i += 2) {\n        // Check if bindings (odd indexes) have changed\n        isBindingUpdated = bindingUpdated(lView, bindingIndex++, values[i]) || isBindingUpdated;\n    }\n    setBindingIndex(bindingIndex);\n    if (!isBindingUpdated) {\n        return NO_CHANGE;\n    }\n    // Build the updated content\n    let content = values[0];\n    for (let i = 1; i < values.length; i += 2) {\n        content += renderStringify(values[i]) + values[i + 1];\n    }\n    return content;\n}\n/**\n * Creates an interpolation binding with 1 expression.\n *\n * @param prefix static value used for concatenation only.\n * @param v0 value checked for change.\n * @param suffix static value used for concatenation only.\n */\nfunction interpolation1(lView, prefix, v0, suffix) {\n    const different = bindingUpdated(lView, nextBindingIndex(), v0);\n    return different ? prefix + renderStringify(v0) + suffix : NO_CHANGE;\n}\n/**\n * Creates an interpolation binding with 2 expressions.\n */\nfunction interpolation2(lView, prefix, v0, i0, v1, suffix) {\n    const bindingIndex = getBindingIndex();\n    const different = bindingUpdated2(lView, bindingIndex, v0, v1);\n    incrementBindingIndex(2);\n    return different ? prefix + renderStringify(v0) + i0 + renderStringify(v1) + suffix : NO_CHANGE;\n}\n/**\n * Creates an interpolation binding with 3 expressions.\n */\nfunction interpolation3(lView, prefix, v0, i0, v1, i1, v2, suffix) {\n    const bindingIndex = getBindingIndex();\n    const different = bindingUpdated3(lView, bindingIndex, v0, v1, v2);\n    incrementBindingIndex(3);\n    return different ?\n        prefix + renderStringify(v0) + i0 + renderStringify(v1) + i1 + renderStringify(v2) + suffix :\n        NO_CHANGE;\n}\n/**\n * Create an interpolation binding with 4 expressions.\n */\nfunction interpolation4(lView, prefix, v0, i0, v1, i1, v2, i2, v3, suffix) {\n    const bindingIndex = getBindingIndex();\n    const different = bindingUpdated4(lView, bindingIndex, v0, v1, v2, v3);\n    incrementBindingIndex(4);\n    return different ? prefix + renderStringify(v0) + i0 + renderStringify(v1) + i1 +\n        renderStringify(v2) + i2 + renderStringify(v3) + suffix :\n        NO_CHANGE;\n}\n/**\n * Creates an interpolation binding with 5 expressions.\n */\nfunction interpolation5(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix) {\n    const bindingIndex = getBindingIndex();\n    let different = bindingUpdated4(lView, bindingIndex, v0, v1, v2, v3);\n    different = bindingUpdated(lView, bindingIndex + 4, v4) || different;\n    incrementBindingIndex(5);\n    return different ? prefix + renderStringify(v0) + i0 + renderStringify(v1) + i1 +\n        renderStringify(v2) + i2 + renderStringify(v3) + i3 + renderStringify(v4) + suffix :\n        NO_CHANGE;\n}\n/**\n * Creates an interpolation binding with 6 expressions.\n */\nfunction interpolation6(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix) {\n    const bindingIndex = getBindingIndex();\n    let different = bindingUpdated4(lView, bindingIndex, v0, v1, v2, v3);\n    different = bindingUpdated2(lView, bindingIndex + 4, v4, v5) || different;\n    incrementBindingIndex(6);\n    return different ?\n        prefix + renderStringify(v0) + i0 + renderStringify(v1) + i1 + renderStringify(v2) + i2 +\n            renderStringify(v3) + i3 + renderStringify(v4) + i4 + renderStringify(v5) + suffix :\n        NO_CHANGE;\n}\n/**\n * Creates an interpolation binding with 7 expressions.\n */\nfunction interpolation7(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix) {\n    const bindingIndex = getBindingIndex();\n    let different = bindingUpdated4(lView, bindingIndex, v0, v1, v2, v3);\n    different = bindingUpdated3(lView, bindingIndex + 4, v4, v5, v6) || different;\n    incrementBindingIndex(7);\n    return different ? prefix + renderStringify(v0) + i0 + renderStringify(v1) + i1 +\n        renderStringify(v2) + i2 + renderStringify(v3) + i3 + renderStringify(v4) + i4 +\n        renderStringify(v5) + i5 + renderStringify(v6) + suffix :\n        NO_CHANGE;\n}\n/**\n * Creates an interpolation binding with 8 expressions.\n */\nfunction interpolation8(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix) {\n    const bindingIndex = getBindingIndex();\n    let different = bindingUpdated4(lView, bindingIndex, v0, v1, v2, v3);\n    different = bindingUpdated4(lView, bindingIndex + 4, v4, v5, v6, v7) || different;\n    incrementBindingIndex(8);\n    return different ? prefix + renderStringify(v0) + i0 + renderStringify(v1) + i1 +\n        renderStringify(v2) + i2 + renderStringify(v3) + i3 + renderStringify(v4) + i4 +\n        renderStringify(v5) + i5 + renderStringify(v6) + i6 + renderStringify(v7) + suffix :\n        NO_CHANGE;\n}\n\n/**\n *\n * Update an interpolated attribute on an element with single bound value surrounded by text.\n *\n * Used when the value passed to a property has 1 interpolated value in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate1('title', 'prefix', v0, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵattributeInterpolate1(attrName, prefix, v0, suffix, sanitizer, namespace) {\n    const lView = getLView();\n    const interpolatedValue = interpolation1(lView, prefix, v0, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tNode = getSelectedTNode();\n        elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n        ngDevMode &&\n            storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 1, prefix, suffix);\n    }\n    return ɵɵattributeInterpolate1;\n}\n/**\n *\n * Update an interpolated attribute on an element with 2 bound values surrounded by text.\n *\n * Used when the value passed to a property has 2 interpolated values in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}-{{v1}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate2('title', 'prefix', v0, '-', v1, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵattributeInterpolate2(attrName, prefix, v0, i0, v1, suffix, sanitizer, namespace) {\n    const lView = getLView();\n    const interpolatedValue = interpolation2(lView, prefix, v0, i0, v1, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tNode = getSelectedTNode();\n        elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n        ngDevMode &&\n            storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 2, prefix, i0, suffix);\n    }\n    return ɵɵattributeInterpolate2;\n}\n/**\n *\n * Update an interpolated attribute on an element with 3 bound values surrounded by text.\n *\n * Used when the value passed to a property has 3 interpolated values in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}-{{v1}}-{{v2}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate3(\n * 'title', 'prefix', v0, '-', v1, '-', v2, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵattributeInterpolate3(attrName, prefix, v0, i0, v1, i1, v2, suffix, sanitizer, namespace) {\n    const lView = getLView();\n    const interpolatedValue = interpolation3(lView, prefix, v0, i0, v1, i1, v2, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tNode = getSelectedTNode();\n        elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n        ngDevMode &&\n            storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 3, prefix, i0, i1, suffix);\n    }\n    return ɵɵattributeInterpolate3;\n}\n/**\n *\n * Update an interpolated attribute on an element with 4 bound values surrounded by text.\n *\n * Used when the value passed to a property has 4 interpolated values in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate4(\n * 'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵattributeInterpolate4(attrName, prefix, v0, i0, v1, i1, v2, i2, v3, suffix, sanitizer, namespace) {\n    const lView = getLView();\n    const interpolatedValue = interpolation4(lView, prefix, v0, i0, v1, i1, v2, i2, v3, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tNode = getSelectedTNode();\n        elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n        ngDevMode &&\n            storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 4, prefix, i0, i1, i2, suffix);\n    }\n    return ɵɵattributeInterpolate4;\n}\n/**\n *\n * Update an interpolated attribute on an element with 5 bound values surrounded by text.\n *\n * Used when the value passed to a property has 5 interpolated values in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate5(\n * 'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵattributeInterpolate5(attrName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix, sanitizer, namespace) {\n    const lView = getLView();\n    const interpolatedValue = interpolation5(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tNode = getSelectedTNode();\n        elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n        ngDevMode &&\n            storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 5, prefix, i0, i1, i2, i3, suffix);\n    }\n    return ɵɵattributeInterpolate5;\n}\n/**\n *\n * Update an interpolated attribute on an element with 6 bound values surrounded by text.\n *\n * Used when the value passed to a property has 6 interpolated values in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate6(\n *    'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵattributeInterpolate6(attrName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix, sanitizer, namespace) {\n    const lView = getLView();\n    const interpolatedValue = interpolation6(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tNode = getSelectedTNode();\n        elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n        ngDevMode &&\n            storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 6, prefix, i0, i1, i2, i3, i4, suffix);\n    }\n    return ɵɵattributeInterpolate6;\n}\n/**\n *\n * Update an interpolated attribute on an element with 7 bound values surrounded by text.\n *\n * Used when the value passed to a property has 7 interpolated values in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate7(\n *    'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵattributeInterpolate7(attrName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix, sanitizer, namespace) {\n    const lView = getLView();\n    const interpolatedValue = interpolation7(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tNode = getSelectedTNode();\n        elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n        ngDevMode &&\n            storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 7, prefix, i0, i1, i2, i3, i4, i5, suffix);\n    }\n    return ɵɵattributeInterpolate7;\n}\n/**\n *\n * Update an interpolated attribute on an element with 8 bound values surrounded by text.\n *\n * Used when the value passed to a property has 8 interpolated values in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate8(\n *  'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param i6 Static value used for concatenation only.\n * @param v7 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵattributeInterpolate8(attrName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix, sanitizer, namespace) {\n    const lView = getLView();\n    const interpolatedValue = interpolation8(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tNode = getSelectedTNode();\n        elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n        ngDevMode &&\n            storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 8, prefix, i0, i1, i2, i3, i4, i5, i6, suffix);\n    }\n    return ɵɵattributeInterpolate8;\n}\n/**\n * Update an interpolated attribute on an element with 9 or more bound values surrounded by text.\n *\n * Used when the number of interpolated values exceeds 8.\n *\n * ```html\n * <div\n *  title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}-{{v8}}-{{v9}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolateV(\n *  'title', ['prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, '-', v9,\n *  'suffix']);\n * ```\n *\n * @param attrName The name of the attribute to update.\n * @param values The collection of values and the strings in-between those values, beginning with\n * a string prefix and ending with a string suffix.\n * (e.g. `['prefix', value0, '-', value1, '-', value2, ..., value99, 'suffix']`)\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵattributeInterpolateV(attrName, values, sanitizer, namespace) {\n    const lView = getLView();\n    const interpolated = interpolationV(lView, values);\n    if (interpolated !== NO_CHANGE) {\n        const tNode = getSelectedTNode();\n        elementAttributeInternal(tNode, lView, attrName, interpolated, sanitizer, namespace);\n        if (ngDevMode) {\n            const interpolationInBetween = [values[0]]; // prefix\n            for (let i = 2; i < values.length; i += 2) {\n                interpolationInBetween.push(values[i]);\n            }\n            storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - interpolationInBetween.length + 1, ...interpolationInBetween);\n        }\n    }\n    return ɵɵattributeInterpolateV;\n}\n\n/**\n * Synchronously perform change detection on a component (and possibly its sub-components).\n *\n * This function triggers change detection in a synchronous way on a component.\n *\n * @param component The component which the change detection should be performed on.\n */\nfunction detectChanges(component) {\n    const view = getComponentViewByInstance(component);\n    detectChangesInternal(view[TVIEW], view, component);\n}\n\nfunction templateFirstCreatePass(index, tView, lView, templateFn, decls, vars, tagName, attrsIndex, localRefsIndex) {\n    ngDevMode && assertFirstCreatePass(tView);\n    ngDevMode && ngDevMode.firstCreatePass++;\n    const tViewConsts = tView.consts;\n    // TODO(pk): refactor getOrCreateTNode to have the \"create\" only version\n    const tNode = getOrCreateTNode(tView, index, 4 /* TNodeType.Container */, tagName || null, getConstant(tViewConsts, attrsIndex));\n    resolveDirectives(tView, lView, tNode, getConstant(tViewConsts, localRefsIndex));\n    registerPostOrderHooks(tView, tNode);\n    const embeddedTView = tNode.tView = createTView(2 /* TViewType.Embedded */, tNode, templateFn, decls, vars, tView.directiveRegistry, tView.pipeRegistry, null, tView.schemas, tViewConsts);\n    if (tView.queries !== null) {\n        tView.queries.template(tView, tNode);\n        embeddedTView.queries = tView.queries.embeddedTView(tNode);\n    }\n    return tNode;\n}\n/**\n * Creates an LContainer for an ng-template (dynamically-inserted view), e.g.\n *\n * <ng-template #foo>\n *    <div></div>\n * </ng-template>\n *\n * @param index The index of the container in the data array\n * @param templateFn Inline template\n * @param decls The number of nodes, local refs, and pipes for this template\n * @param vars The number of bindings for this template\n * @param tagName The name of the container element, if applicable\n * @param attrsIndex Index of template attributes in the `consts` array.\n * @param localRefs Index of the local references in the `consts` array.\n * @param localRefExtractor A function which extracts local-refs values from the template.\n *        Defaults to the current element associated with the local-ref.\n *\n * @codeGenApi\n */\nfunction ɵɵtemplate(index, templateFn, decls, vars, tagName, attrsIndex, localRefsIndex, localRefExtractor) {\n    const lView = getLView();\n    const tView = getTView();\n    const adjustedIndex = index + HEADER_OFFSET;\n    const tNode = tView.firstCreatePass ? templateFirstCreatePass(adjustedIndex, tView, lView, templateFn, decls, vars, tagName, attrsIndex, localRefsIndex) :\n        tView.data[adjustedIndex];\n    setCurrentTNode(tNode, false);\n    const comment = lView[RENDERER].createComment(ngDevMode ? 'container' : '');\n    appendChild(tView, lView, comment, tNode);\n    attachPatchData(comment, lView);\n    addToViewTree(lView, lView[adjustedIndex] = createLContainer(comment, lView, comment, tNode));\n    if (isDirectiveHost(tNode)) {\n        createDirectivesInstances(tView, lView, tNode);\n    }\n    if (localRefsIndex != null) {\n        saveResolvedLocalsInData(lView, tNode, localRefExtractor);\n    }\n}\n\n/** Store a value in the `data` at a given `index`. */\nfunction store(tView, lView, index, value) {\n    // We don't store any static data for local variables, so the first time\n    // we see the template, we should store as null to avoid a sparse array\n    if (index >= tView.data.length) {\n        tView.data[index] = null;\n        tView.blueprint[index] = null;\n    }\n    lView[index] = value;\n}\n/**\n * Retrieves a local reference from the current contextViewData.\n *\n * If the reference to retrieve is in a parent view, this instruction is used in conjunction\n * with a nextContext() call, which walks up the tree and updates the contextViewData instance.\n *\n * @param index The index of the local ref in contextViewData.\n *\n * @codeGenApi\n */\nfunction ɵɵreference(index) {\n    const contextLView = getContextLView();\n    return load(contextLView, HEADER_OFFSET + index);\n}\n\n/**\n * Update a property on a selected element.\n *\n * Operates on the element selected by index via the {@link select} instruction.\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled\n *\n * @param propName Name of property. Because it is going to DOM, this is not subject to\n *        renaming as part of minification.\n * @param value New value to write.\n * @param sanitizer An optional function used to sanitize the value.\n * @returns This function returns itself so that it may be chained\n * (e.g. `property('name', ctx.name)('title', ctx.title)`)\n *\n * @codeGenApi\n */\nfunction ɵɵproperty(propName, value, sanitizer) {\n    const lView = getLView();\n    const bindingIndex = nextBindingIndex();\n    if (bindingUpdated(lView, bindingIndex, value)) {\n        const tView = getTView();\n        const tNode = getSelectedTNode();\n        elementPropertyInternal(tView, tNode, lView, propName, value, lView[RENDERER], sanitizer, false);\n        ngDevMode && storePropertyBindingMetadata(tView.data, tNode, propName, bindingIndex);\n    }\n    return ɵɵproperty;\n}\n/**\n * Given `<div style=\"...\" my-dir>` and `MyDir` with `@Input('style')` we need to write to\n * directive input.\n */\nfunction setDirectiveInputsWhichShadowsStyling(tView, tNode, lView, value, isClassBased) {\n    const inputs = tNode.inputs;\n    const property = isClassBased ? 'class' : 'style';\n    // We support both 'class' and `className` hence the fallback.\n    setInputsForProperty(tView, lView, inputs[property], property, value);\n}\n\nfunction elementStartFirstCreatePass(index, tView, lView, name, attrsIndex, localRefsIndex) {\n    ngDevMode && assertFirstCreatePass(tView);\n    ngDevMode && ngDevMode.firstCreatePass++;\n    const tViewConsts = tView.consts;\n    const attrs = getConstant(tViewConsts, attrsIndex);\n    const tNode = getOrCreateTNode(tView, index, 2 /* TNodeType.Element */, name, attrs);\n    resolveDirectives(tView, lView, tNode, getConstant(tViewConsts, localRefsIndex));\n    if (tNode.attrs !== null) {\n        computeStaticStyling(tNode, tNode.attrs, false);\n    }\n    if (tNode.mergedAttrs !== null) {\n        computeStaticStyling(tNode, tNode.mergedAttrs, true);\n    }\n    if (tView.queries !== null) {\n        tView.queries.elementStart(tView, tNode);\n    }\n    return tNode;\n}\n/**\n * Create DOM element. The instruction must later be followed by `elementEnd()` call.\n *\n * @param index Index of the element in the LView array\n * @param name Name of the DOM Node\n * @param attrsIndex Index of the element's attributes in the `consts` array.\n * @param localRefsIndex Index of the element's local references in the `consts` array.\n * @returns This function returns itself so that it may be chained.\n *\n * Attributes and localRefs are passed as an array of strings where elements with an even index\n * hold an attribute name and elements with an odd index hold an attribute value, ex.:\n * ['id', 'warning5', 'class', 'alert']\n *\n * @codeGenApi\n */\nfunction ɵɵelementStart(index, name, attrsIndex, localRefsIndex) {\n    const lView = getLView();\n    const tView = getTView();\n    const adjustedIndex = HEADER_OFFSET + index;\n    ngDevMode &&\n        assertEqual(getBindingIndex(), tView.bindingStartIndex, 'elements should be created before any bindings');\n    ngDevMode && assertIndexInRange(lView, adjustedIndex);\n    const renderer = lView[RENDERER];\n    const tNode = tView.firstCreatePass ?\n        elementStartFirstCreatePass(adjustedIndex, tView, lView, name, attrsIndex, localRefsIndex) :\n        tView.data[adjustedIndex];\n    const native = lView[adjustedIndex] = createElementNode(renderer, name, getNamespace$1());\n    const hasDirectives = isDirectiveHost(tNode);\n    if (ngDevMode && tView.firstCreatePass) {\n        validateElementIsKnown(native, lView, tNode.value, tView.schemas, hasDirectives);\n    }\n    setCurrentTNode(tNode, true);\n    setupStaticAttributes(renderer, native, tNode);\n    if ((tNode.flags & 32 /* TNodeFlags.isDetached */) !== 32 /* TNodeFlags.isDetached */) {\n        // In the i18n case, the translation may have removed this element, so only add it if it is not\n        // detached. See `TNodeType.Placeholder` and `LFrame.inI18n` for more context.\n        appendChild(tView, lView, native, tNode);\n    }\n    // any immediate children of a component or template container must be pre-emptively\n    // monkey-patched with the component view data so that the element can be inspected\n    // later on using any element discovery utility methods (see `element_discovery.ts`)\n    if (getElementDepthCount() === 0) {\n        attachPatchData(native, lView);\n    }\n    increaseElementDepthCount();\n    if (hasDirectives) {\n        createDirectivesInstances(tView, lView, tNode);\n        executeContentQueries(tView, tNode, lView);\n    }\n    if (localRefsIndex !== null) {\n        saveResolvedLocalsInData(lView, tNode);\n    }\n    return ɵɵelementStart;\n}\n/**\n * Mark the end of the element.\n * @returns This function returns itself so that it may be chained.\n *\n * @codeGenApi\n */\nfunction ɵɵelementEnd() {\n    let currentTNode = getCurrentTNode();\n    ngDevMode && assertDefined(currentTNode, 'No parent node to close.');\n    if (isCurrentTNodeParent()) {\n        setCurrentTNodeAsNotParent();\n    }\n    else {\n        ngDevMode && assertHasParent(getCurrentTNode());\n        currentTNode = currentTNode.parent;\n        setCurrentTNode(currentTNode, false);\n    }\n    const tNode = currentTNode;\n    ngDevMode && assertTNodeType(tNode, 3 /* TNodeType.AnyRNode */);\n    decreaseElementDepthCount();\n    const tView = getTView();\n    if (tView.firstCreatePass) {\n        registerPostOrderHooks(tView, currentTNode);\n        if (isContentQueryHost(currentTNode)) {\n            tView.queries.elementEnd(currentTNode);\n        }\n    }\n    if (tNode.classesWithoutHost != null && hasClassInput(tNode)) {\n        setDirectiveInputsWhichShadowsStyling(tView, tNode, getLView(), tNode.classesWithoutHost, true);\n    }\n    if (tNode.stylesWithoutHost != null && hasStyleInput(tNode)) {\n        setDirectiveInputsWhichShadowsStyling(tView, tNode, getLView(), tNode.stylesWithoutHost, false);\n    }\n    return ɵɵelementEnd;\n}\n/**\n * Creates an empty element using {@link elementStart} and {@link elementEnd}\n *\n * @param index Index of the element in the data array\n * @param name Name of the DOM Node\n * @param attrsIndex Index of the element's attributes in the `consts` array.\n * @param localRefsIndex Index of the element's local references in the `consts` array.\n * @returns This function returns itself so that it may be chained.\n *\n * @codeGenApi\n */\nfunction ɵɵelement(index, name, attrsIndex, localRefsIndex) {\n    ɵɵelementStart(index, name, attrsIndex, localRefsIndex);\n    ɵɵelementEnd();\n    return ɵɵelement;\n}\n\nfunction elementContainerStartFirstCreatePass(index, tView, lView, attrsIndex, localRefsIndex) {\n    ngDevMode && ngDevMode.firstCreatePass++;\n    const tViewConsts = tView.consts;\n    const attrs = getConstant(tViewConsts, attrsIndex);\n    const tNode = getOrCreateTNode(tView, index, 8 /* TNodeType.ElementContainer */, 'ng-container', attrs);\n    // While ng-container doesn't necessarily support styling, we use the style context to identify\n    // and execute directives on the ng-container.\n    if (attrs !== null) {\n        computeStaticStyling(tNode, attrs, true);\n    }\n    const localRefs = getConstant(tViewConsts, localRefsIndex);\n    resolveDirectives(tView, lView, tNode, localRefs);\n    if (tView.queries !== null) {\n        tView.queries.elementStart(tView, tNode);\n    }\n    return tNode;\n}\n/**\n * Creates a logical container for other nodes (<ng-container>) backed by a comment node in the DOM.\n * The instruction must later be followed by `elementContainerEnd()` call.\n *\n * @param index Index of the element in the LView array\n * @param attrsIndex Index of the container attributes in the `consts` array.\n * @param localRefsIndex Index of the container's local references in the `consts` array.\n * @returns This function returns itself so that it may be chained.\n *\n * Even if this instruction accepts a set of attributes no actual attribute values are propagated to\n * the DOM (as a comment node can't have attributes). Attributes are here only for directive\n * matching purposes and setting initial inputs of directives.\n *\n * @codeGenApi\n */\nfunction ɵɵelementContainerStart(index, attrsIndex, localRefsIndex) {\n    const lView = getLView();\n    const tView = getTView();\n    const adjustedIndex = index + HEADER_OFFSET;\n    ngDevMode && assertIndexInRange(lView, adjustedIndex);\n    ngDevMode &&\n        assertEqual(getBindingIndex(), tView.bindingStartIndex, 'element containers should be created before any bindings');\n    const tNode = tView.firstCreatePass ?\n        elementContainerStartFirstCreatePass(adjustedIndex, tView, lView, attrsIndex, localRefsIndex) :\n        tView.data[adjustedIndex];\n    setCurrentTNode(tNode, true);\n    ngDevMode && ngDevMode.rendererCreateComment++;\n    const native = lView[adjustedIndex] =\n        lView[RENDERER].createComment(ngDevMode ? 'ng-container' : '');\n    appendChild(tView, lView, native, tNode);\n    attachPatchData(native, lView);\n    if (isDirectiveHost(tNode)) {\n        createDirectivesInstances(tView, lView, tNode);\n        executeContentQueries(tView, tNode, lView);\n    }\n    if (localRefsIndex != null) {\n        saveResolvedLocalsInData(lView, tNode);\n    }\n    return ɵɵelementContainerStart;\n}\n/**\n * Mark the end of the <ng-container>.\n * @returns This function returns itself so that it may be chained.\n *\n * @codeGenApi\n */\nfunction ɵɵelementContainerEnd() {\n    let currentTNode = getCurrentTNode();\n    const tView = getTView();\n    if (isCurrentTNodeParent()) {\n        setCurrentTNodeAsNotParent();\n    }\n    else {\n        ngDevMode && assertHasParent(currentTNode);\n        currentTNode = currentTNode.parent;\n        setCurrentTNode(currentTNode, false);\n    }\n    ngDevMode && assertTNodeType(currentTNode, 8 /* TNodeType.ElementContainer */);\n    if (tView.firstCreatePass) {\n        registerPostOrderHooks(tView, currentTNode);\n        if (isContentQueryHost(currentTNode)) {\n            tView.queries.elementEnd(currentTNode);\n        }\n    }\n    return ɵɵelementContainerEnd;\n}\n/**\n * Creates an empty logical container using {@link elementContainerStart}\n * and {@link elementContainerEnd}\n *\n * @param index Index of the element in the LView array\n * @param attrsIndex Index of the container attributes in the `consts` array.\n * @param localRefsIndex Index of the container's local references in the `consts` array.\n * @returns This function returns itself so that it may be chained.\n *\n * @codeGenApi\n */\nfunction ɵɵelementContainer(index, attrsIndex, localRefsIndex) {\n    ɵɵelementContainerStart(index, attrsIndex, localRefsIndex);\n    ɵɵelementContainerEnd();\n    return ɵɵelementContainer;\n}\n\n/**\n * Returns the current OpaqueViewState instance.\n *\n * Used in conjunction with the restoreView() instruction to save a snapshot\n * of the current view and restore it when listeners are invoked. This allows\n * walking the declaration view tree in listeners to get vars from parent views.\n *\n * @codeGenApi\n */\nfunction ɵɵgetCurrentView() {\n    return getLView();\n}\n\n/**\n * Determine if the argument is shaped like a Promise\n */\nfunction isPromise(obj) {\n    // allow any Promise/A+ compliant thenable.\n    // It's up to the caller to ensure that obj.then conforms to the spec\n    return !!obj && typeof obj.then === 'function';\n}\n/**\n * Determine if the argument is a Subscribable\n */\nfunction isSubscribable(obj) {\n    return !!obj && typeof obj.subscribe === 'function';\n}\n/**\n * Determine if the argument is an Observable\n *\n * Strictly this tests that the `obj` is `Subscribable`, since `Observable`\n * types need additional methods, such as `lift()`. But it is adequate for our\n * needs since within the Angular framework code we only ever need to use the\n * `subscribe()` method, and RxJS has mechanisms to wrap `Subscribable` objects\n * into `Observable` as needed.\n */\nconst isObservable = isSubscribable;\n\n/**\n * Adds an event listener to the current node.\n *\n * If an output exists on one of the node's directives, it also subscribes to the output\n * and saves the subscription for later cleanup.\n *\n * @param eventName Name of the event\n * @param listenerFn The function to be called when event emits\n * @param useCapture Whether or not to use capture in event listener - this argument is a reminder\n *     from the Renderer3 infrastructure and should be removed from the instruction arguments\n * @param eventTargetResolver Function that returns global target information in case this listener\n * should be attached to a global object like window, document or body\n *\n * @codeGenApi\n */\nfunction ɵɵlistener(eventName, listenerFn, useCapture, eventTargetResolver) {\n    const lView = getLView();\n    const tView = getTView();\n    const tNode = getCurrentTNode();\n    listenerInternal(tView, lView, lView[RENDERER], tNode, eventName, listenerFn, eventTargetResolver);\n    return ɵɵlistener;\n}\n/**\n * Registers a synthetic host listener (e.g. `(@foo.start)`) on a component or directive.\n *\n * This instruction is for compatibility purposes and is designed to ensure that a\n * synthetic host listener (e.g. `@HostListener('@foo.start')`) properly gets rendered\n * in the component's renderer. Normally all host listeners are evaluated with the\n * parent component's renderer, but, in the case of animation @triggers, they need\n * to be evaluated with the sub component's renderer (because that's where the\n * animation triggers are defined).\n *\n * Do not use this instruction as a replacement for `listener`. This instruction\n * only exists to ensure compatibility with the ViewEngine's host binding behavior.\n *\n * @param eventName Name of the event\n * @param listenerFn The function to be called when event emits\n * @param useCapture Whether or not to use capture in event listener\n * @param eventTargetResolver Function that returns global target information in case this listener\n * should be attached to a global object like window, document or body\n *\n * @codeGenApi\n */\nfunction ɵɵsyntheticHostListener(eventName, listenerFn) {\n    const tNode = getCurrentTNode();\n    const lView = getLView();\n    const tView = getTView();\n    const currentDef = getCurrentDirectiveDef(tView.data);\n    const renderer = loadComponentRenderer(currentDef, tNode, lView);\n    listenerInternal(tView, lView, renderer, tNode, eventName, listenerFn);\n    return ɵɵsyntheticHostListener;\n}\n/**\n * A utility function that checks if a given element has already an event handler registered for an\n * event with a specified name. The TView.cleanup data structure is used to find out which events\n * are registered for a given element.\n */\nfunction findExistingListener(tView, lView, eventName, tNodeIdx) {\n    const tCleanup = tView.cleanup;\n    if (tCleanup != null) {\n        for (let i = 0; i < tCleanup.length - 1; i += 2) {\n            const cleanupEventName = tCleanup[i];\n            if (cleanupEventName === eventName && tCleanup[i + 1] === tNodeIdx) {\n                // We have found a matching event name on the same node but it might not have been\n                // registered yet, so we must explicitly verify entries in the LView cleanup data\n                // structures.\n                const lCleanup = lView[CLEANUP];\n                const listenerIdxInLCleanup = tCleanup[i + 2];\n                return lCleanup.length > listenerIdxInLCleanup ? lCleanup[listenerIdxInLCleanup] : null;\n            }\n            // TView.cleanup can have a mix of 4-elements entries (for event handler cleanups) or\n            // 2-element entries (for directive and queries destroy hooks). As such we can encounter\n            // blocks of 4 or 2 items in the tView.cleanup and this is why we iterate over 2 elements\n            // first and jump another 2 elements if we detect listeners cleanup (4 elements). Also check\n            // documentation of TView.cleanup for more details of this data structure layout.\n            if (typeof cleanupEventName === 'string') {\n                i += 2;\n            }\n        }\n    }\n    return null;\n}\nfunction listenerInternal(tView, lView, renderer, tNode, eventName, listenerFn, eventTargetResolver) {\n    const isTNodeDirectiveHost = isDirectiveHost(tNode);\n    const firstCreatePass = tView.firstCreatePass;\n    const tCleanup = firstCreatePass && getOrCreateTViewCleanup(tView);\n    const context = lView[CONTEXT];\n    // When the ɵɵlistener instruction was generated and is executed we know that there is either a\n    // native listener or a directive output on this element. As such we we know that we will have to\n    // register a listener and store its cleanup function on LView.\n    const lCleanup = getOrCreateLViewCleanup(lView);\n    ngDevMode && assertTNodeType(tNode, 3 /* TNodeType.AnyRNode */ | 12 /* TNodeType.AnyContainer */);\n    let processOutputs = true;\n    // Adding a native event listener is applicable when:\n    // - The corresponding TNode represents a DOM element.\n    // - The event target has a resolver (usually resulting in a global object,\n    //   such as `window` or `document`).\n    if ((tNode.type & 3 /* TNodeType.AnyRNode */) || eventTargetResolver) {\n        const native = getNativeByTNode(tNode, lView);\n        const target = eventTargetResolver ? eventTargetResolver(native) : native;\n        const lCleanupIndex = lCleanup.length;\n        const idxOrTargetGetter = eventTargetResolver ?\n            (_lView) => eventTargetResolver(unwrapRNode(_lView[tNode.index])) :\n            tNode.index;\n        // In order to match current behavior, native DOM event listeners must be added for all\n        // events (including outputs).\n        // There might be cases where multiple directives on the same element try to register an event\n        // handler function for the same event. In this situation we want to avoid registration of\n        // several native listeners as each registration would be intercepted by NgZone and\n        // trigger change detection. This would mean that a single user action would result in several\n        // change detections being invoked. To avoid this situation we want to have only one call to\n        // native handler registration (for the same element and same type of event).\n        //\n        // In order to have just one native event handler in presence of multiple handler functions,\n        // we just register a first handler function as a native event listener and then chain\n        // (coalesce) other handler functions on top of the first native handler function.\n        let existingListener = null;\n        // Please note that the coalescing described here doesn't happen for events specifying an\n        // alternative target (ex. (document:click)) - this is to keep backward compatibility with the\n        // view engine.\n        // Also, we don't have to search for existing listeners is there are no directives\n        // matching on a given node as we can't register multiple event handlers for the same event in\n        // a template (this would mean having duplicate attributes).\n        if (!eventTargetResolver && isTNodeDirectiveHost) {\n            existingListener = findExistingListener(tView, lView, eventName, tNode.index);\n        }\n        if (existingListener !== null) {\n            // Attach a new listener to coalesced listeners list, maintaining the order in which\n            // listeners are registered. For performance reasons, we keep a reference to the last\n            // listener in that list (in `__ngLastListenerFn__` field), so we can avoid going through\n            // the entire set each time we need to add a new listener.\n            const lastListenerFn = existingListener.__ngLastListenerFn__ || existingListener;\n            lastListenerFn.__ngNextListenerFn__ = listenerFn;\n            existingListener.__ngLastListenerFn__ = listenerFn;\n            processOutputs = false;\n        }\n        else {\n            listenerFn = wrapListener(tNode, lView, context, listenerFn, false /** preventDefault */);\n            const cleanupFn = renderer.listen(target, eventName, listenerFn);\n            ngDevMode && ngDevMode.rendererAddEventListener++;\n            lCleanup.push(listenerFn, cleanupFn);\n            tCleanup && tCleanup.push(eventName, idxOrTargetGetter, lCleanupIndex, lCleanupIndex + 1);\n        }\n    }\n    else {\n        // Even if there is no native listener to add, we still need to wrap the listener so that OnPush\n        // ancestors are marked dirty when an event occurs.\n        listenerFn = wrapListener(tNode, lView, context, listenerFn, false /** preventDefault */);\n    }\n    // subscribe to directive outputs\n    const outputs = tNode.outputs;\n    let props;\n    if (processOutputs && outputs !== null && (props = outputs[eventName])) {\n        const propsLength = props.length;\n        if (propsLength) {\n            for (let i = 0; i < propsLength; i += 2) {\n                const index = props[i];\n                ngDevMode && assertIndexInRange(lView, index);\n                const minifiedName = props[i + 1];\n                const directiveInstance = lView[index];\n                const output = directiveInstance[minifiedName];\n                if (ngDevMode && !isObservable(output)) {\n                    throw new Error(`@Output ${minifiedName} not initialized in '${directiveInstance.constructor.name}'.`);\n                }\n                const subscription = output.subscribe(listenerFn);\n                const idx = lCleanup.length;\n                lCleanup.push(listenerFn, subscription);\n                tCleanup && tCleanup.push(eventName, tNode.index, idx, -(idx + 1));\n            }\n        }\n    }\n}\nfunction executeListenerWithErrorHandling(lView, context, listenerFn, e) {\n    try {\n        profiler(6 /* ProfilerEvent.OutputStart */, context, listenerFn);\n        // Only explicitly returning false from a listener should preventDefault\n        return listenerFn(e) !== false;\n    }\n    catch (error) {\n        handleError(lView, error);\n        return false;\n    }\n    finally {\n        profiler(7 /* ProfilerEvent.OutputEnd */, context, listenerFn);\n    }\n}\n/**\n * Wraps an event listener with a function that marks ancestors dirty and prevents default behavior,\n * if applicable.\n *\n * @param tNode The TNode associated with this listener\n * @param lView The LView that contains this listener\n * @param listenerFn The listener function to call\n * @param wrapWithPreventDefault Whether or not to prevent default behavior\n * (the procedural renderer does this already, so in those cases, we should skip)\n */\nfunction wrapListener(tNode, lView, context, listenerFn, wrapWithPreventDefault) {\n    // Note: we are performing most of the work in the listener function itself\n    // to optimize listener registration.\n    return function wrapListenerIn_markDirtyAndPreventDefault(e) {\n        // Ivy uses `Function` as a special token that allows us to unwrap the function\n        // so that it can be invoked programmatically by `DebugNode.triggerEventHandler`.\n        if (e === Function) {\n            return listenerFn;\n        }\n        // In order to be backwards compatible with View Engine, events on component host nodes\n        // must also mark the component view itself dirty (i.e. the view that it owns).\n        const startView = tNode.componentOffset > -1 ? getComponentLViewByIndex(tNode.index, lView) : lView;\n        markViewDirty(startView);\n        let result = executeListenerWithErrorHandling(lView, context, listenerFn, e);\n        // A just-invoked listener function might have coalesced listeners so we need to check for\n        // their presence and invoke as needed.\n        let nextListenerFn = wrapListenerIn_markDirtyAndPreventDefault.__ngNextListenerFn__;\n        while (nextListenerFn) {\n            // We should prevent default if any of the listeners explicitly return false\n            result = executeListenerWithErrorHandling(lView, context, nextListenerFn, e) && result;\n            nextListenerFn = nextListenerFn.__ngNextListenerFn__;\n        }\n        if (wrapWithPreventDefault && result === false) {\n            e.preventDefault();\n            // Necessary for legacy browsers that don't support preventDefault (e.g. IE)\n            e.returnValue = false;\n        }\n        return result;\n    };\n}\n\n/**\n * Retrieves a context at the level specified and saves it as the global, contextViewData.\n * Will get the next level up if level is not specified.\n *\n * This is used to save contexts of parent views so they can be bound in embedded views, or\n * in conjunction with reference() to bind a ref from a parent view.\n *\n * @param level The relative level of the view from which to grab context compared to contextVewData\n * @returns context\n *\n * @codeGenApi\n */\nfunction ɵɵnextContext(level = 1) {\n    return nextContextImpl(level);\n}\n\n/**\n * Checks a given node against matching projection slots and returns the\n * determined slot index. Returns \"null\" if no slot matched the given node.\n *\n * This function takes into account the parsed ngProjectAs selector from the\n * node's attributes. If present, it will check whether the ngProjectAs selector\n * matches any of the projection slot selectors.\n */\nfunction matchingProjectionSlotIndex(tNode, projectionSlots) {\n    let wildcardNgContentIndex = null;\n    const ngProjectAsAttrVal = getProjectAsAttrValue(tNode);\n    for (let i = 0; i < projectionSlots.length; i++) {\n        const slotValue = projectionSlots[i];\n        // The last wildcard projection slot should match all nodes which aren't matching\n        // any selector. This is necessary to be backwards compatible with view engine.\n        if (slotValue === '*') {\n            wildcardNgContentIndex = i;\n            continue;\n        }\n        // If we ran into an `ngProjectAs` attribute, we should match its parsed selector\n        // to the list of selectors, otherwise we fall back to matching against the node.\n        if (ngProjectAsAttrVal === null ?\n            isNodeMatchingSelectorList(tNode, slotValue, /* isProjectionMode */ true) :\n            isSelectorInSelectorList(ngProjectAsAttrVal, slotValue)) {\n            return i; // first matching selector \"captures\" a given node\n        }\n    }\n    return wildcardNgContentIndex;\n}\n/**\n * Instruction to distribute projectable nodes among <ng-content> occurrences in a given template.\n * It takes all the selectors from the entire component's template and decides where\n * each projected node belongs (it re-distributes nodes among \"buckets\" where each \"bucket\" is\n * backed by a selector).\n *\n * This function requires CSS selectors to be provided in 2 forms: parsed (by a compiler) and text,\n * un-parsed form.\n *\n * The parsed form is needed for efficient matching of a node against a given CSS selector.\n * The un-parsed, textual form is needed for support of the ngProjectAs attribute.\n *\n * Having a CSS selector in 2 different formats is not ideal, but alternatives have even more\n * drawbacks:\n * - having only a textual form would require runtime parsing of CSS selectors;\n * - we can't have only a parsed as we can't re-construct textual form from it (as entered by a\n * template author).\n *\n * @param projectionSlots? A collection of projection slots. A projection slot can be based\n *        on a parsed CSS selectors or set to the wildcard selector (\"*\") in order to match\n *        all nodes which do not match any selector. If not specified, a single wildcard\n *        selector projection slot will be defined.\n *\n * @codeGenApi\n */\nfunction ɵɵprojectionDef(projectionSlots) {\n    const componentNode = getLView()[DECLARATION_COMPONENT_VIEW][T_HOST];\n    if (!componentNode.projection) {\n        // If no explicit projection slots are defined, fall back to a single\n        // projection slot with the wildcard selector.\n        const numProjectionSlots = projectionSlots ? projectionSlots.length : 1;\n        const projectionHeads = componentNode.projection =\n            newArray(numProjectionSlots, null);\n        const tails = projectionHeads.slice();\n        let componentChild = componentNode.child;\n        while (componentChild !== null) {\n            const slotIndex = projectionSlots ? matchingProjectionSlotIndex(componentChild, projectionSlots) : 0;\n            if (slotIndex !== null) {\n                if (tails[slotIndex]) {\n                    tails[slotIndex].projectionNext = componentChild;\n                }\n                else {\n                    projectionHeads[slotIndex] = componentChild;\n                }\n                tails[slotIndex] = componentChild;\n            }\n            componentChild = componentChild.next;\n        }\n    }\n}\n/**\n * Inserts previously re-distributed projected nodes. This instruction must be preceded by a call\n * to the projectionDef instruction.\n *\n * @param nodeIndex\n * @param selectorIndex:\n *        - 0 when the selector is `*` (or unspecified as this is the default value),\n *        - 1 based index of the selector from the {@link projectionDef}\n *\n * @codeGenApi\n */\nfunction ɵɵprojection(nodeIndex, selectorIndex = 0, attrs) {\n    const lView = getLView();\n    const tView = getTView();\n    const tProjectionNode = getOrCreateTNode(tView, HEADER_OFFSET + nodeIndex, 16 /* TNodeType.Projection */, null, attrs || null);\n    // We can't use viewData[HOST_NODE] because projection nodes can be nested in embedded views.\n    if (tProjectionNode.projection === null)\n        tProjectionNode.projection = selectorIndex;\n    // `<ng-content>` has no content\n    setCurrentTNodeAsNotParent();\n    if ((tProjectionNode.flags & 32 /* TNodeFlags.isDetached */) !== 32 /* TNodeFlags.isDetached */) {\n        // re-distribution of projectable nodes is stored on a component's view level\n        applyProjection(tView, lView, tProjectionNode);\n    }\n}\n\n/**\n *\n * Update an interpolated property on an element with a lone bound value\n *\n * Used when the value passed to a property has 1 interpolated value in it, an no additional text\n * surrounds that interpolated value:\n *\n * ```html\n * <div title=\"{{v0}}\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate('title', v0);\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵpropertyInterpolate(propName, v0, sanitizer) {\n    ɵɵpropertyInterpolate1(propName, '', v0, '', sanitizer);\n    return ɵɵpropertyInterpolate;\n}\n/**\n *\n * Update an interpolated property on an element with single bound value surrounded by text.\n *\n * Used when the value passed to a property has 1 interpolated value in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate1('title', 'prefix', v0, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵpropertyInterpolate1(propName, prefix, v0, suffix, sanitizer) {\n    const lView = getLView();\n    const interpolatedValue = interpolation1(lView, prefix, v0, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tView = getTView();\n        const tNode = getSelectedTNode();\n        elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n        ngDevMode &&\n            storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 1, prefix, suffix);\n    }\n    return ɵɵpropertyInterpolate1;\n}\n/**\n *\n * Update an interpolated property on an element with 2 bound values surrounded by text.\n *\n * Used when the value passed to a property has 2 interpolated values in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}-{{v1}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate2('title', 'prefix', v0, '-', v1, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵpropertyInterpolate2(propName, prefix, v0, i0, v1, suffix, sanitizer) {\n    const lView = getLView();\n    const interpolatedValue = interpolation2(lView, prefix, v0, i0, v1, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tView = getTView();\n        const tNode = getSelectedTNode();\n        elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n        ngDevMode &&\n            storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 2, prefix, i0, suffix);\n    }\n    return ɵɵpropertyInterpolate2;\n}\n/**\n *\n * Update an interpolated property on an element with 3 bound values surrounded by text.\n *\n * Used when the value passed to a property has 3 interpolated values in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}-{{v1}}-{{v2}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate3(\n * 'title', 'prefix', v0, '-', v1, '-', v2, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵpropertyInterpolate3(propName, prefix, v0, i0, v1, i1, v2, suffix, sanitizer) {\n    const lView = getLView();\n    const interpolatedValue = interpolation3(lView, prefix, v0, i0, v1, i1, v2, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tView = getTView();\n        const tNode = getSelectedTNode();\n        elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n        ngDevMode &&\n            storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 3, prefix, i0, i1, suffix);\n    }\n    return ɵɵpropertyInterpolate3;\n}\n/**\n *\n * Update an interpolated property on an element with 4 bound values surrounded by text.\n *\n * Used when the value passed to a property has 4 interpolated values in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate4(\n * 'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵpropertyInterpolate4(propName, prefix, v0, i0, v1, i1, v2, i2, v3, suffix, sanitizer) {\n    const lView = getLView();\n    const interpolatedValue = interpolation4(lView, prefix, v0, i0, v1, i1, v2, i2, v3, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tView = getTView();\n        const tNode = getSelectedTNode();\n        elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n        ngDevMode &&\n            storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 4, prefix, i0, i1, i2, suffix);\n    }\n    return ɵɵpropertyInterpolate4;\n}\n/**\n *\n * Update an interpolated property on an element with 5 bound values surrounded by text.\n *\n * Used when the value passed to a property has 5 interpolated values in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate5(\n * 'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵpropertyInterpolate5(propName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix, sanitizer) {\n    const lView = getLView();\n    const interpolatedValue = interpolation5(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tView = getTView();\n        const tNode = getSelectedTNode();\n        elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n        ngDevMode &&\n            storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 5, prefix, i0, i1, i2, i3, suffix);\n    }\n    return ɵɵpropertyInterpolate5;\n}\n/**\n *\n * Update an interpolated property on an element with 6 bound values surrounded by text.\n *\n * Used when the value passed to a property has 6 interpolated values in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate6(\n *    'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵpropertyInterpolate6(propName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix, sanitizer) {\n    const lView = getLView();\n    const interpolatedValue = interpolation6(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tView = getTView();\n        const tNode = getSelectedTNode();\n        elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n        ngDevMode &&\n            storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 6, prefix, i0, i1, i2, i3, i4, suffix);\n    }\n    return ɵɵpropertyInterpolate6;\n}\n/**\n *\n * Update an interpolated property on an element with 7 bound values surrounded by text.\n *\n * Used when the value passed to a property has 7 interpolated values in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate7(\n *    'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵpropertyInterpolate7(propName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix, sanitizer) {\n    const lView = getLView();\n    const interpolatedValue = interpolation7(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tView = getTView();\n        const tNode = getSelectedTNode();\n        elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n        ngDevMode &&\n            storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 7, prefix, i0, i1, i2, i3, i4, i5, suffix);\n    }\n    return ɵɵpropertyInterpolate7;\n}\n/**\n *\n * Update an interpolated property on an element with 8 bound values surrounded by text.\n *\n * Used when the value passed to a property has 8 interpolated values in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate8(\n *  'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param i6 Static value used for concatenation only.\n * @param v7 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵpropertyInterpolate8(propName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix, sanitizer) {\n    const lView = getLView();\n    const interpolatedValue = interpolation8(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tView = getTView();\n        const tNode = getSelectedTNode();\n        elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n        ngDevMode &&\n            storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 8, prefix, i0, i1, i2, i3, i4, i5, i6, suffix);\n    }\n    return ɵɵpropertyInterpolate8;\n}\n/**\n * Update an interpolated property on an element with 9 or more bound values surrounded by text.\n *\n * Used when the number of interpolated values exceeds 8.\n *\n * ```html\n * <div\n *  title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}-{{v8}}-{{v9}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolateV(\n *  'title', ['prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, '-', v9,\n *  'suffix']);\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update.\n * @param values The collection of values and the strings in between those values, beginning with a\n * string prefix and ending with a string suffix.\n * (e.g. `['prefix', value0, '-', value1, '-', value2, ..., value99, 'suffix']`)\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵpropertyInterpolateV(propName, values, sanitizer) {\n    const lView = getLView();\n    const interpolatedValue = interpolationV(lView, values);\n    if (interpolatedValue !== NO_CHANGE) {\n        const tView = getTView();\n        const tNode = getSelectedTNode();\n        elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n        if (ngDevMode) {\n            const interpolationInBetween = [values[0]]; // prefix\n            for (let i = 2; i < values.length; i += 2) {\n                interpolationInBetween.push(values[i]);\n            }\n            storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - interpolationInBetween.length + 1, ...interpolationInBetween);\n        }\n    }\n    return ɵɵpropertyInterpolateV;\n}\n\nfunction toTStylingRange(prev, next) {\n    ngDevMode && assertNumberInRange(prev, 0, 32767 /* StylingRange.UNSIGNED_MASK */);\n    ngDevMode && assertNumberInRange(next, 0, 32767 /* StylingRange.UNSIGNED_MASK */);\n    return (prev << 17 /* StylingRange.PREV_SHIFT */ | next << 2 /* StylingRange.NEXT_SHIFT */);\n}\nfunction getTStylingRangePrev(tStylingRange) {\n    ngDevMode && assertNumber(tStylingRange, 'expected number');\n    return (tStylingRange >> 17 /* StylingRange.PREV_SHIFT */) & 32767 /* StylingRange.UNSIGNED_MASK */;\n}\nfunction getTStylingRangePrevDuplicate(tStylingRange) {\n    ngDevMode && assertNumber(tStylingRange, 'expected number');\n    return (tStylingRange & 2 /* StylingRange.PREV_DUPLICATE */) ==\n        2 /* StylingRange.PREV_DUPLICATE */;\n}\nfunction setTStylingRangePrev(tStylingRange, previous) {\n    ngDevMode && assertNumber(tStylingRange, 'expected number');\n    ngDevMode && assertNumberInRange(previous, 0, 32767 /* StylingRange.UNSIGNED_MASK */);\n    return ((tStylingRange & ~4294836224 /* StylingRange.PREV_MASK */) |\n        (previous << 17 /* StylingRange.PREV_SHIFT */));\n}\nfunction setTStylingRangePrevDuplicate(tStylingRange) {\n    ngDevMode && assertNumber(tStylingRange, 'expected number');\n    return (tStylingRange | 2 /* StylingRange.PREV_DUPLICATE */);\n}\nfunction getTStylingRangeNext(tStylingRange) {\n    ngDevMode && assertNumber(tStylingRange, 'expected number');\n    return (tStylingRange & 131068 /* StylingRange.NEXT_MASK */) >> 2 /* StylingRange.NEXT_SHIFT */;\n}\nfunction setTStylingRangeNext(tStylingRange, next) {\n    ngDevMode && assertNumber(tStylingRange, 'expected number');\n    ngDevMode && assertNumberInRange(next, 0, 32767 /* StylingRange.UNSIGNED_MASK */);\n    return ((tStylingRange & ~131068 /* StylingRange.NEXT_MASK */) | //\n        next << 2 /* StylingRange.NEXT_SHIFT */);\n}\nfunction getTStylingRangeNextDuplicate(tStylingRange) {\n    ngDevMode && assertNumber(tStylingRange, 'expected number');\n    return (tStylingRange & 1 /* StylingRange.NEXT_DUPLICATE */) ===\n        1 /* StylingRange.NEXT_DUPLICATE */;\n}\nfunction setTStylingRangeNextDuplicate(tStylingRange) {\n    ngDevMode && assertNumber(tStylingRange, 'expected number');\n    return (tStylingRange | 1 /* StylingRange.NEXT_DUPLICATE */);\n}\nfunction getTStylingRangeTail(tStylingRange) {\n    ngDevMode && assertNumber(tStylingRange, 'expected number');\n    const next = getTStylingRangeNext(tStylingRange);\n    return next === 0 ? getTStylingRangePrev(tStylingRange) : next;\n}\n\n/**\n * NOTE: The word `styling` is used interchangeably as style or class styling.\n *\n * This file contains code to link styling instructions together so that they can be replayed in\n * priority order. The file exists because Ivy styling instruction execution order does not match\n * that of the priority order. The purpose of this code is to create a linked list so that the\n * instructions can be traversed in priority order when computing the styles.\n *\n * Assume we are dealing with the following code:\n * ```\n * @Component({\n *   template: `\n *     <my-cmp [style]=\" {color: '#001'} \"\n *             [style.color]=\" #002 \"\n *             dir-style-color-1\n *             dir-style-color-2> `\n * })\n * class ExampleComponent {\n *   static ngComp = ... {\n *     ...\n *     // Compiler ensures that `ɵɵstyleProp` is after `ɵɵstyleMap`\n *     ɵɵstyleMap({color: '#001'});\n *     ɵɵstyleProp('color', '#002');\n *     ...\n *   }\n * }\n *\n * @Directive({\n *   selector: `[dir-style-color-1]',\n * })\n * class Style1Directive {\n *   @HostBinding('style') style = {color: '#005'};\n *   @HostBinding('style.color') color = '#006';\n *\n *   static ngDir = ... {\n *     ...\n *     // Compiler ensures that `ɵɵstyleProp` is after `ɵɵstyleMap`\n *     ɵɵstyleMap({color: '#005'});\n *     ɵɵstyleProp('color', '#006');\n *     ...\n *   }\n * }\n *\n * @Directive({\n *   selector: `[dir-style-color-2]',\n * })\n * class Style2Directive {\n *   @HostBinding('style') style = {color: '#007'};\n *   @HostBinding('style.color') color = '#008';\n *\n *   static ngDir = ... {\n *     ...\n *     // Compiler ensures that `ɵɵstyleProp` is after `ɵɵstyleMap`\n *     ɵɵstyleMap({color: '#007'});\n *     ɵɵstyleProp('color', '#008');\n *     ...\n *   }\n * }\n *\n * @Directive({\n *   selector: `my-cmp',\n * })\n * class MyComponent {\n *   @HostBinding('style') style = {color: '#003'};\n *   @HostBinding('style.color') color = '#004';\n *\n *   static ngComp = ... {\n *     ...\n *     // Compiler ensures that `ɵɵstyleProp` is after `ɵɵstyleMap`\n *     ɵɵstyleMap({color: '#003'});\n *     ɵɵstyleProp('color', '#004');\n *     ...\n *   }\n * }\n * ```\n *\n * The Order of instruction execution is:\n *\n * NOTE: the comment binding location is for illustrative purposes only.\n *\n * ```\n * // Template: (ExampleComponent)\n *     ɵɵstyleMap({color: '#001'});   // Binding index: 10\n *     ɵɵstyleProp('color', '#002');  // Binding index: 12\n * // MyComponent\n *     ɵɵstyleMap({color: '#003'});   // Binding index: 20\n *     ɵɵstyleProp('color', '#004');  // Binding index: 22\n * // Style1Directive\n *     ɵɵstyleMap({color: '#005'});   // Binding index: 24\n *     ɵɵstyleProp('color', '#006');  // Binding index: 26\n * // Style2Directive\n *     ɵɵstyleMap({color: '#007'});   // Binding index: 28\n *     ɵɵstyleProp('color', '#008');  // Binding index: 30\n * ```\n *\n * The correct priority order of concatenation is:\n *\n * ```\n * // MyComponent\n *     ɵɵstyleMap({color: '#003'});   // Binding index: 20\n *     ɵɵstyleProp('color', '#004');  // Binding index: 22\n * // Style1Directive\n *     ɵɵstyleMap({color: '#005'});   // Binding index: 24\n *     ɵɵstyleProp('color', '#006');  // Binding index: 26\n * // Style2Directive\n *     ɵɵstyleMap({color: '#007'});   // Binding index: 28\n *     ɵɵstyleProp('color', '#008');  // Binding index: 30\n * // Template: (ExampleComponent)\n *     ɵɵstyleMap({color: '#001'});   // Binding index: 10\n *     ɵɵstyleProp('color', '#002');  // Binding index: 12\n * ```\n *\n * What color should be rendered?\n *\n * Once the items are correctly sorted in the list, the answer is simply the last item in the\n * concatenation list which is `#002`.\n *\n * To do so we keep a linked list of all of the bindings which pertain to this element.\n * Notice that the bindings are inserted in the order of execution, but the `TView.data` allows\n * us to traverse them in the order of priority.\n *\n * |Idx|`TView.data`|`LView`          | Notes\n * |---|------------|-----------------|--------------\n * |...|            |                 |\n * |10 |`null`      |`{color: '#001'}`| `ɵɵstyleMap('color', {color: '#001'})`\n * |11 |`30 | 12`   | ...             |\n * |12 |`color`     |`'#002'`         | `ɵɵstyleProp('color', '#002')`\n * |13 |`10 | 0`    | ...             |\n * |...|            |                 |\n * |20 |`null`      |`{color: '#003'}`| `ɵɵstyleMap('color', {color: '#003'})`\n * |21 |`0 | 22`    | ...             |\n * |22 |`color`     |`'#004'`         | `ɵɵstyleProp('color', '#004')`\n * |23 |`20 | 24`   | ...             |\n * |24 |`null`      |`{color: '#005'}`| `ɵɵstyleMap('color', {color: '#005'})`\n * |25 |`22 | 26`   | ...             |\n * |26 |`color`     |`'#006'`         | `ɵɵstyleProp('color', '#006')`\n * |27 |`24 | 28`   | ...             |\n * |28 |`null`      |`{color: '#007'}`| `ɵɵstyleMap('color', {color: '#007'})`\n * |29 |`26 | 30`   | ...             |\n * |30 |`color`     |`'#008'`         | `ɵɵstyleProp('color', '#008')`\n * |31 |`28 | 10`   | ...             |\n *\n * The above data structure allows us to re-concatenate the styling no matter which data binding\n * changes.\n *\n * NOTE: in addition to keeping track of next/previous index the `TView.data` also stores prev/next\n * duplicate bit. The duplicate bit if true says there either is a binding with the same name or\n * there is a map (which may contain the name). This information is useful in knowing if other\n * styles with higher priority need to be searched for overwrites.\n *\n * NOTE: See `should support example in 'tnode_linked_list.ts' documentation` in\n * `tnode_linked_list_spec.ts` for working example.\n */\nlet __unused_const_as_closure_does_not_like_standalone_comment_blocks__;\n/**\n * Insert new `tStyleValue` at `TData` and link existing style bindings such that we maintain linked\n * list of styles and compute the duplicate flag.\n *\n * Note: this function is executed during `firstUpdatePass` only to populate the `TView.data`.\n *\n * The function works by keeping track of `tStylingRange` which contains two pointers pointing to\n * the head/tail of the template portion of the styles.\n *  - if `isHost === false` (we are template) then insertion is at tail of `TStylingRange`\n *  - if `isHost === true` (we are host binding) then insertion is at head of `TStylingRange`\n *\n * @param tData The `TData` to insert into.\n * @param tNode `TNode` associated with the styling element.\n * @param tStylingKey See `TStylingKey`.\n * @param index location of where `tStyleValue` should be stored (and linked into list.)\n * @param isHostBinding `true` if the insertion is for a `hostBinding`. (insertion is in front of\n *               template.)\n * @param isClassBinding True if the associated `tStylingKey` as a `class` styling.\n *                       `tNode.classBindings` should be used (or `tNode.styleBindings` otherwise.)\n */\nfunction insertTStylingBinding(tData, tNode, tStylingKeyWithStatic, index, isHostBinding, isClassBinding) {\n    ngDevMode && assertFirstUpdatePass(getTView());\n    let tBindings = isClassBinding ? tNode.classBindings : tNode.styleBindings;\n    let tmplHead = getTStylingRangePrev(tBindings);\n    let tmplTail = getTStylingRangeNext(tBindings);\n    tData[index] = tStylingKeyWithStatic;\n    let isKeyDuplicateOfStatic = false;\n    let tStylingKey;\n    if (Array.isArray(tStylingKeyWithStatic)) {\n        // We are case when the `TStylingKey` contains static fields as well.\n        const staticKeyValueArray = tStylingKeyWithStatic;\n        tStylingKey = staticKeyValueArray[1]; // unwrap.\n        // We need to check if our key is present in the static so that we can mark it as duplicate.\n        if (tStylingKey === null ||\n            keyValueArrayIndexOf(staticKeyValueArray, tStylingKey) > 0) {\n            // tStylingKey is present in the statics, need to mark it as duplicate.\n            isKeyDuplicateOfStatic = true;\n        }\n    }\n    else {\n        tStylingKey = tStylingKeyWithStatic;\n    }\n    if (isHostBinding) {\n        // We are inserting host bindings\n        // If we don't have template bindings then `tail` is 0.\n        const hasTemplateBindings = tmplTail !== 0;\n        // This is important to know because that means that the `head` can't point to the first\n        // template bindings (there are none.) Instead the head points to the tail of the template.\n        if (hasTemplateBindings) {\n            // template head's \"prev\" will point to last host binding or to 0 if no host bindings yet\n            const previousNode = getTStylingRangePrev(tData[tmplHead + 1]);\n            tData[index + 1] = toTStylingRange(previousNode, tmplHead);\n            // if a host binding has already been registered, we need to update the next of that host\n            // binding to point to this one\n            if (previousNode !== 0) {\n                // We need to update the template-tail value to point to us.\n                tData[previousNode + 1] =\n                    setTStylingRangeNext(tData[previousNode + 1], index);\n            }\n            // The \"previous\" of the template binding head should point to this host binding\n            tData[tmplHead + 1] = setTStylingRangePrev(tData[tmplHead + 1], index);\n        }\n        else {\n            tData[index + 1] = toTStylingRange(tmplHead, 0);\n            // if a host binding has already been registered, we need to update the next of that host\n            // binding to point to this one\n            if (tmplHead !== 0) {\n                // We need to update the template-tail value to point to us.\n                tData[tmplHead + 1] = setTStylingRangeNext(tData[tmplHead + 1], index);\n            }\n            // if we don't have template, the head points to template-tail, and needs to be advanced.\n            tmplHead = index;\n        }\n    }\n    else {\n        // We are inserting in template section.\n        // We need to set this binding's \"previous\" to the current template tail\n        tData[index + 1] = toTStylingRange(tmplTail, 0);\n        ngDevMode &&\n            assertEqual(tmplHead !== 0 && tmplTail === 0, false, 'Adding template bindings after hostBindings is not allowed.');\n        if (tmplHead === 0) {\n            tmplHead = index;\n        }\n        else {\n            // We need to update the previous value \"next\" to point to this binding\n            tData[tmplTail + 1] = setTStylingRangeNext(tData[tmplTail + 1], index);\n        }\n        tmplTail = index;\n    }\n    // Now we need to update / compute the duplicates.\n    // Starting with our location search towards head (least priority)\n    if (isKeyDuplicateOfStatic) {\n        tData[index + 1] = setTStylingRangePrevDuplicate(tData[index + 1]);\n    }\n    markDuplicates(tData, tStylingKey, index, true, isClassBinding);\n    markDuplicates(tData, tStylingKey, index, false, isClassBinding);\n    markDuplicateOfResidualStyling(tNode, tStylingKey, tData, index, isClassBinding);\n    tBindings = toTStylingRange(tmplHead, tmplTail);\n    if (isClassBinding) {\n        tNode.classBindings = tBindings;\n    }\n    else {\n        tNode.styleBindings = tBindings;\n    }\n}\n/**\n * Look into the residual styling to see if the current `tStylingKey` is duplicate of residual.\n *\n * @param tNode `TNode` where the residual is stored.\n * @param tStylingKey `TStylingKey` to store.\n * @param tData `TData` associated with the current `LView`.\n * @param index location of where `tStyleValue` should be stored (and linked into list.)\n * @param isClassBinding True if the associated `tStylingKey` as a `class` styling.\n *                       `tNode.classBindings` should be used (or `tNode.styleBindings` otherwise.)\n */\nfunction markDuplicateOfResidualStyling(tNode, tStylingKey, tData, index, isClassBinding) {\n    const residual = isClassBinding ? tNode.residualClasses : tNode.residualStyles;\n    if (residual != null /* or undefined */ && typeof tStylingKey == 'string' &&\n        keyValueArrayIndexOf(residual, tStylingKey) >= 0) {\n        // We have duplicate in the residual so mark ourselves as duplicate.\n        tData[index + 1] = setTStylingRangeNextDuplicate(tData[index + 1]);\n    }\n}\n/**\n * Marks `TStyleValue`s as duplicates if another style binding in the list has the same\n * `TStyleValue`.\n *\n * NOTE: this function is intended to be called twice once with `isPrevDir` set to `true` and once\n * with it set to `false` to search both the previous as well as next items in the list.\n *\n * No duplicate case\n * ```\n *   [style.color]\n *   [style.width.px] <<- index\n *   [style.height.px]\n * ```\n *\n * In the above case adding `[style.width.px]` to the existing `[style.color]` produces no\n * duplicates because `width` is not found in any other part of the linked list.\n *\n * Duplicate case\n * ```\n *   [style.color]\n *   [style.width.em]\n *   [style.width.px] <<- index\n * ```\n * In the above case adding `[style.width.px]` will produce a duplicate with `[style.width.em]`\n * because `width` is found in the chain.\n *\n * Map case 1\n * ```\n *   [style.width.px]\n *   [style.color]\n *   [style]  <<- index\n * ```\n * In the above case adding `[style]` will produce a duplicate with any other bindings because\n * `[style]` is a Map and as such is fully dynamic and could produce `color` or `width`.\n *\n * Map case 2\n * ```\n *   [style]\n *   [style.width.px]\n *   [style.color]  <<- index\n * ```\n * In the above case adding `[style.color]` will produce a duplicate because there is already a\n * `[style]` binding which is a Map and as such is fully dynamic and could produce `color` or\n * `width`.\n *\n * NOTE: Once `[style]` (Map) is added into the system all things are mapped as duplicates.\n * NOTE: We use `style` as example, but same logic is applied to `class`es as well.\n *\n * @param tData `TData` where the linked list is stored.\n * @param tStylingKey `TStylingKeyPrimitive` which contains the value to compare to other keys in\n *        the linked list.\n * @param index Starting location in the linked list to search from\n * @param isPrevDir Direction.\n *        - `true` for previous (lower priority);\n *        - `false` for next (higher priority).\n */\nfunction markDuplicates(tData, tStylingKey, index, isPrevDir, isClassBinding) {\n    const tStylingAtIndex = tData[index + 1];\n    const isMap = tStylingKey === null;\n    let cursor = isPrevDir ? getTStylingRangePrev(tStylingAtIndex) : getTStylingRangeNext(tStylingAtIndex);\n    let foundDuplicate = false;\n    // We keep iterating as long as we have a cursor\n    // AND either:\n    // - we found what we are looking for, OR\n    // - we are a map in which case we have to continue searching even after we find what we were\n    //   looking for since we are a wild card and everything needs to be flipped to duplicate.\n    while (cursor !== 0 && (foundDuplicate === false || isMap)) {\n        ngDevMode && assertIndexInRange(tData, cursor);\n        const tStylingValueAtCursor = tData[cursor];\n        const tStyleRangeAtCursor = tData[cursor + 1];\n        if (isStylingMatch(tStylingValueAtCursor, tStylingKey)) {\n            foundDuplicate = true;\n            tData[cursor + 1] = isPrevDir ? setTStylingRangeNextDuplicate(tStyleRangeAtCursor) :\n                setTStylingRangePrevDuplicate(tStyleRangeAtCursor);\n        }\n        cursor = isPrevDir ? getTStylingRangePrev(tStyleRangeAtCursor) :\n            getTStylingRangeNext(tStyleRangeAtCursor);\n    }\n    if (foundDuplicate) {\n        // if we found a duplicate, than mark ourselves.\n        tData[index + 1] = isPrevDir ? setTStylingRangePrevDuplicate(tStylingAtIndex) :\n            setTStylingRangeNextDuplicate(tStylingAtIndex);\n    }\n}\n/**\n * Determines if two `TStylingKey`s are a match.\n *\n * When computing whether a binding contains a duplicate, we need to compare if the instruction\n * `TStylingKey` has a match.\n *\n * Here are examples of `TStylingKey`s which match given `tStylingKeyCursor` is:\n * - `color`\n *    - `color`    // Match another color\n *    - `null`     // That means that `tStylingKey` is a `classMap`/`styleMap` instruction\n *    - `['', 'color', 'other', true]` // wrapped `color` so match\n *    - `['', null, 'other', true]`       // wrapped `null` so match\n *    - `['', 'width', 'color', 'value']` // wrapped static value contains a match on `'color'`\n * - `null`       // `tStylingKeyCursor` always match as it is `classMap`/`styleMap` instruction\n *\n * @param tStylingKeyCursor\n * @param tStylingKey\n */\nfunction isStylingMatch(tStylingKeyCursor, tStylingKey) {\n    ngDevMode &&\n        assertNotEqual(Array.isArray(tStylingKey), true, 'Expected that \\'tStylingKey\\' has been unwrapped');\n    if (tStylingKeyCursor === null || // If the cursor is `null` it means that we have map at that\n        // location so we must assume that we have a match.\n        tStylingKey == null || // If `tStylingKey` is `null` then it is a map therefor assume that it\n        // contains a match.\n        (Array.isArray(tStylingKeyCursor) ? tStylingKeyCursor[1] : tStylingKeyCursor) ===\n            tStylingKey // If the keys match explicitly than we are a match.\n    ) {\n        return true;\n    }\n    else if (Array.isArray(tStylingKeyCursor) && typeof tStylingKey === 'string') {\n        // if we did not find a match, but `tStylingKeyCursor` is `KeyValueArray` that means cursor has\n        // statics and we need to check those as well.\n        return keyValueArrayIndexOf(tStylingKeyCursor, tStylingKey) >=\n            0; // see if we are matching the key\n    }\n    return false;\n}\n\n// Global state of the parser. (This makes parser non-reentrant, but that is not an issue)\nconst parserState = {\n    textEnd: 0,\n    key: 0,\n    keyEnd: 0,\n    value: 0,\n    valueEnd: 0,\n};\n/**\n * Retrieves the last parsed `key` of style.\n * @param text the text to substring the key from.\n */\nfunction getLastParsedKey(text) {\n    return text.substring(parserState.key, parserState.keyEnd);\n}\n/**\n * Retrieves the last parsed `value` of style.\n * @param text the text to substring the key from.\n */\nfunction getLastParsedValue(text) {\n    return text.substring(parserState.value, parserState.valueEnd);\n}\n/**\n * Initializes `className` string for parsing and parses the first token.\n *\n * This function is intended to be used in this format:\n * ```\n * for (let i = parseClassName(text); i >= 0; i = parseClassNameNext(text, i)) {\n *   const key = getLastParsedKey();\n *   ...\n * }\n * ```\n * @param text `className` to parse\n * @returns index where the next invocation of `parseClassNameNext` should resume.\n */\nfunction parseClassName(text) {\n    resetParserState(text);\n    return parseClassNameNext(text, consumeWhitespace(text, 0, parserState.textEnd));\n}\n/**\n * Parses next `className` token.\n *\n * This function is intended to be used in this format:\n * ```\n * for (let i = parseClassName(text); i >= 0; i = parseClassNameNext(text, i)) {\n *   const key = getLastParsedKey();\n *   ...\n * }\n * ```\n *\n * @param text `className` to parse\n * @param index where the parsing should resume.\n * @returns index where the next invocation of `parseClassNameNext` should resume.\n */\nfunction parseClassNameNext(text, index) {\n    const end = parserState.textEnd;\n    if (end === index) {\n        return -1;\n    }\n    index = parserState.keyEnd = consumeClassToken(text, parserState.key = index, end);\n    return consumeWhitespace(text, index, end);\n}\n/**\n * Initializes `cssText` string for parsing and parses the first key/values.\n *\n * This function is intended to be used in this format:\n * ```\n * for (let i = parseStyle(text); i >= 0; i = parseStyleNext(text, i))) {\n *   const key = getLastParsedKey();\n *   const value = getLastParsedValue();\n *   ...\n * }\n * ```\n * @param text `cssText` to parse\n * @returns index where the next invocation of `parseStyleNext` should resume.\n */\nfunction parseStyle(text) {\n    resetParserState(text);\n    return parseStyleNext(text, consumeWhitespace(text, 0, parserState.textEnd));\n}\n/**\n * Parses the next `cssText` key/values.\n *\n * This function is intended to be used in this format:\n * ```\n * for (let i = parseStyle(text); i >= 0; i = parseStyleNext(text, i))) {\n *   const key = getLastParsedKey();\n *   const value = getLastParsedValue();\n *   ...\n * }\n *\n * @param text `cssText` to parse\n * @param index where the parsing should resume.\n * @returns index where the next invocation of `parseStyleNext` should resume.\n */\nfunction parseStyleNext(text, startIndex) {\n    const end = parserState.textEnd;\n    let index = parserState.key = consumeWhitespace(text, startIndex, end);\n    if (end === index) {\n        // we reached an end so just quit\n        return -1;\n    }\n    index = parserState.keyEnd = consumeStyleKey(text, index, end);\n    index = consumeSeparator(text, index, end, 58 /* CharCode.COLON */);\n    index = parserState.value = consumeWhitespace(text, index, end);\n    index = parserState.valueEnd = consumeStyleValue(text, index, end);\n    return consumeSeparator(text, index, end, 59 /* CharCode.SEMI_COLON */);\n}\n/**\n * Reset the global state of the styling parser.\n * @param text The styling text to parse.\n */\nfunction resetParserState(text) {\n    parserState.key = 0;\n    parserState.keyEnd = 0;\n    parserState.value = 0;\n    parserState.valueEnd = 0;\n    parserState.textEnd = text.length;\n}\n/**\n * Returns index of next non-whitespace character.\n *\n * @param text Text to scan\n * @param startIndex Starting index of character where the scan should start.\n * @param endIndex Ending index of character where the scan should end.\n * @returns Index of next non-whitespace character (May be the same as `start` if no whitespace at\n *          that location.)\n */\nfunction consumeWhitespace(text, startIndex, endIndex) {\n    while (startIndex < endIndex && text.charCodeAt(startIndex) <= 32 /* CharCode.SPACE */) {\n        startIndex++;\n    }\n    return startIndex;\n}\n/**\n * Returns index of last char in class token.\n *\n * @param text Text to scan\n * @param startIndex Starting index of character where the scan should start.\n * @param endIndex Ending index of character where the scan should end.\n * @returns Index after last char in class token.\n */\nfunction consumeClassToken(text, startIndex, endIndex) {\n    while (startIndex < endIndex && text.charCodeAt(startIndex) > 32 /* CharCode.SPACE */) {\n        startIndex++;\n    }\n    return startIndex;\n}\n/**\n * Consumes all of the characters belonging to style key and token.\n *\n * @param text Text to scan\n * @param startIndex Starting index of character where the scan should start.\n * @param endIndex Ending index of character where the scan should end.\n * @returns Index after last style key character.\n */\nfunction consumeStyleKey(text, startIndex, endIndex) {\n    let ch;\n    while (startIndex < endIndex &&\n        ((ch = text.charCodeAt(startIndex)) === 45 /* CharCode.DASH */ || ch === 95 /* CharCode.UNDERSCORE */ ||\n            ((ch & -33 /* CharCode.UPPER_CASE */) >= 65 /* CharCode.A */ && (ch & -33 /* CharCode.UPPER_CASE */) <= 90 /* CharCode.Z */) ||\n            (ch >= 48 /* CharCode.ZERO */ && ch <= 57 /* CharCode.NINE */))) {\n        startIndex++;\n    }\n    return startIndex;\n}\n/**\n * Consumes all whitespace and the separator `:` after the style key.\n *\n * @param text Text to scan\n * @param startIndex Starting index of character where the scan should start.\n * @param endIndex Ending index of character where the scan should end.\n * @returns Index after separator and surrounding whitespace.\n */\nfunction consumeSeparator(text, startIndex, endIndex, separator) {\n    startIndex = consumeWhitespace(text, startIndex, endIndex);\n    if (startIndex < endIndex) {\n        if (ngDevMode && text.charCodeAt(startIndex) !== separator) {\n            malformedStyleError(text, String.fromCharCode(separator), startIndex);\n        }\n        startIndex++;\n    }\n    return startIndex;\n}\n/**\n * Consumes style value honoring `url()` and `\"\"` text.\n *\n * @param text Text to scan\n * @param startIndex Starting index of character where the scan should start.\n * @param endIndex Ending index of character where the scan should end.\n * @returns Index after last style value character.\n */\nfunction consumeStyleValue(text, startIndex, endIndex) {\n    let ch1 = -1; // 1st previous character\n    let ch2 = -1; // 2nd previous character\n    let ch3 = -1; // 3rd previous character\n    let i = startIndex;\n    let lastChIndex = i;\n    while (i < endIndex) {\n        const ch = text.charCodeAt(i++);\n        if (ch === 59 /* CharCode.SEMI_COLON */) {\n            return lastChIndex;\n        }\n        else if (ch === 34 /* CharCode.DOUBLE_QUOTE */ || ch === 39 /* CharCode.SINGLE_QUOTE */) {\n            lastChIndex = i = consumeQuotedText(text, ch, i, endIndex);\n        }\n        else if (startIndex ===\n            i - 4 && // We have seen only 4 characters so far \"URL(\" (Ignore \"foo_URL()\")\n            ch3 === 85 /* CharCode.U */ &&\n            ch2 === 82 /* CharCode.R */ && ch1 === 76 /* CharCode.L */ && ch === 40 /* CharCode.OPEN_PAREN */) {\n            lastChIndex = i = consumeQuotedText(text, 41 /* CharCode.CLOSE_PAREN */, i, endIndex);\n        }\n        else if (ch > 32 /* CharCode.SPACE */) {\n            // if we have a non-whitespace character then capture its location\n            lastChIndex = i;\n        }\n        ch3 = ch2;\n        ch2 = ch1;\n        ch1 = ch & -33 /* CharCode.UPPER_CASE */;\n    }\n    return lastChIndex;\n}\n/**\n * Consumes all of the quoted characters.\n *\n * @param text Text to scan\n * @param quoteCharCode CharCode of either `\"` or `'` quote or `)` for `url(...)`.\n * @param startIndex Starting index of character where the scan should start.\n * @param endIndex Ending index of character where the scan should end.\n * @returns Index after quoted characters.\n */\nfunction consumeQuotedText(text, quoteCharCode, startIndex, endIndex) {\n    let ch1 = -1; // 1st previous character\n    let index = startIndex;\n    while (index < endIndex) {\n        const ch = text.charCodeAt(index++);\n        if (ch == quoteCharCode && ch1 !== 92 /* CharCode.BACK_SLASH */) {\n            return index;\n        }\n        if (ch == 92 /* CharCode.BACK_SLASH */ && ch1 === 92 /* CharCode.BACK_SLASH */) {\n            // two back slashes cancel each other out. For example `\"\\\\\"` should properly end the\n            // quotation. (It should not assume that the last `\"` is escaped.)\n            ch1 = 0;\n        }\n        else {\n            ch1 = ch;\n        }\n    }\n    throw ngDevMode ? malformedStyleError(text, String.fromCharCode(quoteCharCode), endIndex) :\n        new Error();\n}\nfunction malformedStyleError(text, expecting, index) {\n    ngDevMode && assertEqual(typeof text === 'string', true, 'String expected here');\n    throw throwError(`Malformed style at location ${index} in string '` + text.substring(0, index) + '[>>' +\n        text.substring(index, index + 1) + '<<]' + text.slice(index + 1) +\n        `'. Expecting '${expecting}'.`);\n}\n\n/**\n * Update a style binding on an element with the provided value.\n *\n * If the style value is falsy then it will be removed from the element\n * (or assigned a different value depending if there are any styles placed\n * on the element with `styleMap` or any static styles that are\n * present from when the element was created with `styling`).\n *\n * Note that the styling element is updated as part of `stylingApply`.\n *\n * @param prop A valid CSS property.\n * @param value New value to write (`null` or an empty string to remove).\n * @param suffix Optional suffix. Used with scalar values to add unit such as `px`.\n *\n * Note that this will apply the provided style value to the host element if this function is called\n * within a host binding function.\n *\n * @codeGenApi\n */\nfunction ɵɵstyleProp(prop, value, suffix) {\n    checkStylingProperty(prop, value, suffix, false);\n    return ɵɵstyleProp;\n}\n/**\n * Update a class binding on an element with the provided value.\n *\n * This instruction is meant to handle the `[class.foo]=\"exp\"` case and,\n * therefore, the class binding itself must already be allocated using\n * `styling` within the creation block.\n *\n * @param prop A valid CSS class (only one).\n * @param value A true/false value which will turn the class on or off.\n *\n * Note that this will apply the provided class value to the host element if this function\n * is called within a host binding function.\n *\n * @codeGenApi\n */\nfunction ɵɵclassProp(className, value) {\n    checkStylingProperty(className, value, null, true);\n    return ɵɵclassProp;\n}\n/**\n * Update style bindings using an object literal on an element.\n *\n * This instruction is meant to apply styling via the `[style]=\"exp\"` template bindings.\n * When styles are applied to the element they will then be updated with respect to\n * any styles/classes set via `styleProp`. If any styles are set to falsy\n * then they will be removed from the element.\n *\n * Note that the styling instruction will not be applied until `stylingApply` is called.\n *\n * @param styles A key/value style map of the styles that will be applied to the given element.\n *        Any missing styles (that have already been applied to the element beforehand) will be\n *        removed (unset) from the element's styling.\n *\n * Note that this will apply the provided styleMap value to the host element if this function\n * is called within a host binding.\n *\n * @codeGenApi\n */\nfunction ɵɵstyleMap(styles) {\n    checkStylingMap(styleKeyValueArraySet, styleStringParser, styles, false);\n}\n/**\n * Parse text as style and add values to KeyValueArray.\n *\n * This code is pulled out to a separate function so that it can be tree shaken away if it is not\n * needed. It is only referenced from `ɵɵstyleMap`.\n *\n * @param keyValueArray KeyValueArray to add parsed values to.\n * @param text text to parse.\n */\nfunction styleStringParser(keyValueArray, text) {\n    for (let i = parseStyle(text); i >= 0; i = parseStyleNext(text, i)) {\n        styleKeyValueArraySet(keyValueArray, getLastParsedKey(text), getLastParsedValue(text));\n    }\n}\n/**\n * Update class bindings using an object literal or class-string on an element.\n *\n * This instruction is meant to apply styling via the `[class]=\"exp\"` template bindings.\n * When classes are applied to the element they will then be updated with\n * respect to any styles/classes set via `classProp`. If any\n * classes are set to falsy then they will be removed from the element.\n *\n * Note that the styling instruction will not be applied until `stylingApply` is called.\n * Note that this will the provided classMap value to the host element if this function is called\n * within a host binding.\n *\n * @param classes A key/value map or string of CSS classes that will be added to the\n *        given element. Any missing classes (that have already been applied to the element\n *        beforehand) will be removed (unset) from the element's list of CSS classes.\n *\n * @codeGenApi\n */\nfunction ɵɵclassMap(classes) {\n    checkStylingMap(classKeyValueArraySet, classStringParser, classes, true);\n}\n/**\n * Parse text as class and add values to KeyValueArray.\n *\n * This code is pulled out to a separate function so that it can be tree shaken away if it is not\n * needed. It is only referenced from `ɵɵclassMap`.\n *\n * @param keyValueArray KeyValueArray to add parsed values to.\n * @param text text to parse.\n */\nfunction classStringParser(keyValueArray, text) {\n    for (let i = parseClassName(text); i >= 0; i = parseClassNameNext(text, i)) {\n        keyValueArraySet(keyValueArray, getLastParsedKey(text), true);\n    }\n}\n/**\n * Common code between `ɵɵclassProp` and `ɵɵstyleProp`.\n *\n * @param prop property name.\n * @param value binding value.\n * @param suffix suffix for the property (e.g. `em` or `px`)\n * @param isClassBased `true` if `class` change (`false` if `style`)\n */\nfunction checkStylingProperty(prop, value, suffix, isClassBased) {\n    const lView = getLView();\n    const tView = getTView();\n    // Styling instructions use 2 slots per binding.\n    // 1. one for the value / TStylingKey\n    // 2. one for the intermittent-value / TStylingRange\n    const bindingIndex = incrementBindingIndex(2);\n    if (tView.firstUpdatePass) {\n        stylingFirstUpdatePass(tView, prop, bindingIndex, isClassBased);\n    }\n    if (value !== NO_CHANGE && bindingUpdated(lView, bindingIndex, value)) {\n        const tNode = tView.data[getSelectedIndex()];\n        updateStyling(tView, tNode, lView, lView[RENDERER], prop, lView[bindingIndex + 1] = normalizeSuffix(value, suffix), isClassBased, bindingIndex);\n    }\n}\n/**\n * Common code between `ɵɵclassMap` and `ɵɵstyleMap`.\n *\n * @param keyValueArraySet (See `keyValueArraySet` in \"util/array_utils\") Gets passed in as a\n *        function so that `style` can be processed. This is done for tree shaking purposes.\n * @param stringParser Parser used to parse `value` if `string`. (Passed in as `style` and `class`\n *        have different parsers.)\n * @param value bound value from application\n * @param isClassBased `true` if `class` change (`false` if `style`)\n */\nfunction checkStylingMap(keyValueArraySet, stringParser, value, isClassBased) {\n    const tView = getTView();\n    const bindingIndex = incrementBindingIndex(2);\n    if (tView.firstUpdatePass) {\n        stylingFirstUpdatePass(tView, null, bindingIndex, isClassBased);\n    }\n    const lView = getLView();\n    if (value !== NO_CHANGE && bindingUpdated(lView, bindingIndex, value)) {\n        // `getSelectedIndex()` should be here (rather than in instruction) so that it is guarded by the\n        // if so as not to read unnecessarily.\n        const tNode = tView.data[getSelectedIndex()];\n        if (hasStylingInputShadow(tNode, isClassBased) && !isInHostBindings(tView, bindingIndex)) {\n            if (ngDevMode) {\n                // verify that if we are shadowing then `TData` is appropriately marked so that we skip\n                // processing this binding in styling resolution.\n                const tStylingKey = tView.data[bindingIndex];\n                assertEqual(Array.isArray(tStylingKey) ? tStylingKey[1] : tStylingKey, false, 'Styling linked list shadow input should be marked as \\'false\\'');\n            }\n            // VE does not concatenate the static portion like we are doing here.\n            // Instead VE just ignores the static completely if dynamic binding is present.\n            // Because of locality we have already set the static portion because we don't know if there\n            // is a dynamic portion until later. If we would ignore the static portion it would look like\n            // the binding has removed it. This would confuse `[ngStyle]`/`[ngClass]` to do the wrong\n            // thing as it would think that the static portion was removed. For this reason we\n            // concatenate it so that `[ngStyle]`/`[ngClass]`  can continue to work on changed.\n            let staticPrefix = isClassBased ? tNode.classesWithoutHost : tNode.stylesWithoutHost;\n            ngDevMode && isClassBased === false && staticPrefix !== null &&\n                assertEqual(staticPrefix.endsWith(';'), true, 'Expecting static portion to end with \\';\\'');\n            if (staticPrefix !== null) {\n                // We want to make sure that falsy values of `value` become empty strings.\n                value = concatStringsWithSpace(staticPrefix, value ? value : '');\n            }\n            // Given `<div [style] my-dir>` such that `my-dir` has `@Input('style')`.\n            // This takes over the `[style]` binding. (Same for `[class]`)\n            setDirectiveInputsWhichShadowsStyling(tView, tNode, lView, value, isClassBased);\n        }\n        else {\n            updateStylingMap(tView, tNode, lView, lView[RENDERER], lView[bindingIndex + 1], lView[bindingIndex + 1] = toStylingKeyValueArray(keyValueArraySet, stringParser, value), isClassBased, bindingIndex);\n        }\n    }\n}\n/**\n * Determines when the binding is in `hostBindings` section\n *\n * @param tView Current `TView`\n * @param bindingIndex index of binding which we would like if it is in `hostBindings`\n */\nfunction isInHostBindings(tView, bindingIndex) {\n    // All host bindings are placed after the expando section.\n    return bindingIndex >= tView.expandoStartIndex;\n}\n/**\n * Collects the necessary information to insert the binding into a linked list of style bindings\n * using `insertTStylingBinding`.\n *\n * @param tView `TView` where the binding linked list will be stored.\n * @param tStylingKey Property/key of the binding.\n * @param bindingIndex Index of binding associated with the `prop`\n * @param isClassBased `true` if `class` change (`false` if `style`)\n */\nfunction stylingFirstUpdatePass(tView, tStylingKey, bindingIndex, isClassBased) {\n    ngDevMode && assertFirstUpdatePass(tView);\n    const tData = tView.data;\n    if (tData[bindingIndex + 1] === null) {\n        // The above check is necessary because we don't clear first update pass until first successful\n        // (no exception) template execution. This prevents the styling instruction from double adding\n        // itself to the list.\n        // `getSelectedIndex()` should be here (rather than in instruction) so that it is guarded by the\n        // if so as not to read unnecessarily.\n        const tNode = tData[getSelectedIndex()];\n        ngDevMode && assertDefined(tNode, 'TNode expected');\n        const isHostBindings = isInHostBindings(tView, bindingIndex);\n        if (hasStylingInputShadow(tNode, isClassBased) && tStylingKey === null && !isHostBindings) {\n            // `tStylingKey === null` implies that we are either `[style]` or `[class]` binding.\n            // If there is a directive which uses `@Input('style')` or `@Input('class')` than\n            // we need to neutralize this binding since that directive is shadowing it.\n            // We turn this into a noop by setting the key to `false`\n            tStylingKey = false;\n        }\n        tStylingKey = wrapInStaticStylingKey(tData, tNode, tStylingKey, isClassBased);\n        insertTStylingBinding(tData, tNode, tStylingKey, bindingIndex, isHostBindings, isClassBased);\n    }\n}\n/**\n * Adds static styling information to the binding if applicable.\n *\n * The linked list of styles not only stores the list and keys, but also stores static styling\n * information on some of the keys. This function determines if the key should contain the styling\n * information and computes it.\n *\n * See `TStylingStatic` for more details.\n *\n * @param tData `TData` where the linked list is stored.\n * @param tNode `TNode` for which the styling is being computed.\n * @param stylingKey `TStylingKeyPrimitive` which may need to be wrapped into `TStylingKey`\n * @param isClassBased `true` if `class` (`false` if `style`)\n */\nfunction wrapInStaticStylingKey(tData, tNode, stylingKey, isClassBased) {\n    const hostDirectiveDef = getCurrentDirectiveDef(tData);\n    let residual = isClassBased ? tNode.residualClasses : tNode.residualStyles;\n    if (hostDirectiveDef === null) {\n        // We are in template node.\n        // If template node already had styling instruction then it has already collected the static\n        // styling and there is no need to collect them again. We know that we are the first styling\n        // instruction because the `TNode.*Bindings` points to 0 (nothing has been inserted yet).\n        const isFirstStylingInstructionInTemplate = (isClassBased ? tNode.classBindings : tNode.styleBindings) === 0;\n        if (isFirstStylingInstructionInTemplate) {\n            // It would be nice to be able to get the statics from `mergeAttrs`, however, at this point\n            // they are already merged and it would not be possible to figure which property belongs where\n            // in the priority.\n            stylingKey = collectStylingFromDirectives(null, tData, tNode, stylingKey, isClassBased);\n            stylingKey = collectStylingFromTAttrs(stylingKey, tNode.attrs, isClassBased);\n            // We know that if we have styling binding in template we can't have residual.\n            residual = null;\n        }\n    }\n    else {\n        // We are in host binding node and there was no binding instruction in template node.\n        // This means that we need to compute the residual.\n        const directiveStylingLast = tNode.directiveStylingLast;\n        const isFirstStylingInstructionInHostBinding = directiveStylingLast === -1 || tData[directiveStylingLast] !== hostDirectiveDef;\n        if (isFirstStylingInstructionInHostBinding) {\n            stylingKey =\n                collectStylingFromDirectives(hostDirectiveDef, tData, tNode, stylingKey, isClassBased);\n            if (residual === null) {\n                // - If `null` than either:\n                //    - Template styling instruction already ran and it has consumed the static\n                //      styling into its `TStylingKey` and so there is no need to update residual. Instead\n                //      we need to update the `TStylingKey` associated with the first template node\n                //      instruction. OR\n                //    - Some other styling instruction ran and determined that there are no residuals\n                let templateStylingKey = getTemplateHeadTStylingKey(tData, tNode, isClassBased);\n                if (templateStylingKey !== undefined && Array.isArray(templateStylingKey)) {\n                    // Only recompute if `templateStylingKey` had static values. (If no static value found\n                    // then there is nothing to do since this operation can only produce less static keys, not\n                    // more.)\n                    templateStylingKey = collectStylingFromDirectives(null, tData, tNode, templateStylingKey[1] /* unwrap previous statics */, isClassBased);\n                    templateStylingKey =\n                        collectStylingFromTAttrs(templateStylingKey, tNode.attrs, isClassBased);\n                    setTemplateHeadTStylingKey(tData, tNode, isClassBased, templateStylingKey);\n                }\n            }\n            else {\n                // We only need to recompute residual if it is not `null`.\n                // - If existing residual (implies there was no template styling). This means that some of\n                //   the statics may have moved from the residual to the `stylingKey` and so we have to\n                //   recompute.\n                // - If `undefined` this is the first time we are running.\n                residual = collectResidual(tData, tNode, isClassBased);\n            }\n        }\n    }\n    if (residual !== undefined) {\n        isClassBased ? (tNode.residualClasses = residual) : (tNode.residualStyles = residual);\n    }\n    return stylingKey;\n}\n/**\n * Retrieve the `TStylingKey` for the template styling instruction.\n *\n * This is needed since `hostBinding` styling instructions are inserted after the template\n * instruction. While the template instruction needs to update the residual in `TNode` the\n * `hostBinding` instructions need to update the `TStylingKey` of the template instruction because\n * the template instruction is downstream from the `hostBindings` instructions.\n *\n * @param tData `TData` where the linked list is stored.\n * @param tNode `TNode` for which the styling is being computed.\n * @param isClassBased `true` if `class` (`false` if `style`)\n * @return `TStylingKey` if found or `undefined` if not found.\n */\nfunction getTemplateHeadTStylingKey(tData, tNode, isClassBased) {\n    const bindings = isClassBased ? tNode.classBindings : tNode.styleBindings;\n    if (getTStylingRangeNext(bindings) === 0) {\n        // There does not seem to be a styling instruction in the `template`.\n        return undefined;\n    }\n    return tData[getTStylingRangePrev(bindings)];\n}\n/**\n * Update the `TStylingKey` of the first template instruction in `TNode`.\n *\n * Logically `hostBindings` styling instructions are of lower priority than that of the template.\n * However, they execute after the template styling instructions. This means that they get inserted\n * in front of the template styling instructions.\n *\n * If we have a template styling instruction and a new `hostBindings` styling instruction is\n * executed it means that it may need to steal static fields from the template instruction. This\n * method allows us to update the first template instruction `TStylingKey` with a new value.\n *\n * Assume:\n * ```\n * <div my-dir style=\"color: red\" [style.color]=\"tmplExp\"></div>\n *\n * @Directive({\n *   host: {\n *     'style': 'width: 100px',\n *     '[style.color]': 'dirExp',\n *   }\n * })\n * class MyDir {}\n * ```\n *\n * when `[style.color]=\"tmplExp\"` executes it creates this data structure.\n * ```\n *  ['', 'color', 'color', 'red', 'width', '100px'],\n * ```\n *\n * The reason for this is that the template instruction does not know if there are styling\n * instructions and must assume that there are none and must collect all of the static styling.\n * (both\n * `color' and 'width`)\n *\n * When `'[style.color]': 'dirExp',` executes we need to insert a new data into the linked list.\n * ```\n *  ['', 'color', 'width', '100px'],  // newly inserted\n *  ['', 'color', 'color', 'red', 'width', '100px'], // this is wrong\n * ```\n *\n * Notice that the template statics is now wrong as it incorrectly contains `width` so we need to\n * update it like so:\n * ```\n *  ['', 'color', 'width', '100px'],\n *  ['', 'color', 'color', 'red'],    // UPDATE\n * ```\n *\n * @param tData `TData` where the linked list is stored.\n * @param tNode `TNode` for which the styling is being computed.\n * @param isClassBased `true` if `class` (`false` if `style`)\n * @param tStylingKey New `TStylingKey` which is replacing the old one.\n */\nfunction setTemplateHeadTStylingKey(tData, tNode, isClassBased, tStylingKey) {\n    const bindings = isClassBased ? tNode.classBindings : tNode.styleBindings;\n    ngDevMode &&\n        assertNotEqual(getTStylingRangeNext(bindings), 0, 'Expecting to have at least one template styling binding.');\n    tData[getTStylingRangePrev(bindings)] = tStylingKey;\n}\n/**\n * Collect all static values after the current `TNode.directiveStylingLast` index.\n *\n * Collect the remaining styling information which has not yet been collected by an existing\n * styling instruction.\n *\n * @param tData `TData` where the `DirectiveDefs` are stored.\n * @param tNode `TNode` which contains the directive range.\n * @param isClassBased `true` if `class` (`false` if `style`)\n */\nfunction collectResidual(tData, tNode, isClassBased) {\n    let residual = undefined;\n    const directiveEnd = tNode.directiveEnd;\n    ngDevMode &&\n        assertNotEqual(tNode.directiveStylingLast, -1, 'By the time this function gets called at least one hostBindings-node styling instruction must have executed.');\n    // We add `1 + tNode.directiveStart` because we need to skip the current directive (as we are\n    // collecting things after the last `hostBindings` directive which had a styling instruction.)\n    for (let i = 1 + tNode.directiveStylingLast; i < directiveEnd; i++) {\n        const attrs = tData[i].hostAttrs;\n        residual = collectStylingFromTAttrs(residual, attrs, isClassBased);\n    }\n    return collectStylingFromTAttrs(residual, tNode.attrs, isClassBased);\n}\n/**\n * Collect the static styling information with lower priority than `hostDirectiveDef`.\n *\n * (This is opposite of residual styling.)\n *\n * @param hostDirectiveDef `DirectiveDef` for which we want to collect lower priority static\n *        styling. (Or `null` if template styling)\n * @param tData `TData` where the linked list is stored.\n * @param tNode `TNode` for which the styling is being computed.\n * @param stylingKey Existing `TStylingKey` to update or wrap.\n * @param isClassBased `true` if `class` (`false` if `style`)\n */\nfunction collectStylingFromDirectives(hostDirectiveDef, tData, tNode, stylingKey, isClassBased) {\n    // We need to loop because there can be directives which have `hostAttrs` but don't have\n    // `hostBindings` so this loop catches up to the current directive..\n    let currentDirective = null;\n    const directiveEnd = tNode.directiveEnd;\n    let directiveStylingLast = tNode.directiveStylingLast;\n    if (directiveStylingLast === -1) {\n        directiveStylingLast = tNode.directiveStart;\n    }\n    else {\n        directiveStylingLast++;\n    }\n    while (directiveStylingLast < directiveEnd) {\n        currentDirective = tData[directiveStylingLast];\n        ngDevMode && assertDefined(currentDirective, 'expected to be defined');\n        stylingKey = collectStylingFromTAttrs(stylingKey, currentDirective.hostAttrs, isClassBased);\n        if (currentDirective === hostDirectiveDef)\n            break;\n        directiveStylingLast++;\n    }\n    if (hostDirectiveDef !== null) {\n        // we only advance the styling cursor if we are collecting data from host bindings.\n        // Template executes before host bindings and so if we would update the index,\n        // host bindings would not get their statics.\n        tNode.directiveStylingLast = directiveStylingLast;\n    }\n    return stylingKey;\n}\n/**\n * Convert `TAttrs` into `TStylingStatic`.\n *\n * @param stylingKey existing `TStylingKey` to update or wrap.\n * @param attrs `TAttributes` to process.\n * @param isClassBased `true` if `class` (`false` if `style`)\n */\nfunction collectStylingFromTAttrs(stylingKey, attrs, isClassBased) {\n    const desiredMarker = isClassBased ? 1 /* AttributeMarker.Classes */ : 2 /* AttributeMarker.Styles */;\n    let currentMarker = -1 /* AttributeMarker.ImplicitAttributes */;\n    if (attrs !== null) {\n        for (let i = 0; i < attrs.length; i++) {\n            const item = attrs[i];\n            if (typeof item === 'number') {\n                currentMarker = item;\n            }\n            else {\n                if (currentMarker === desiredMarker) {\n                    if (!Array.isArray(stylingKey)) {\n                        stylingKey = stylingKey === undefined ? [] : ['', stylingKey];\n                    }\n                    keyValueArraySet(stylingKey, item, isClassBased ? true : attrs[++i]);\n                }\n            }\n        }\n    }\n    return stylingKey === undefined ? null : stylingKey;\n}\n/**\n * Convert user input to `KeyValueArray`.\n *\n * This function takes user input which could be `string`, Object literal, or iterable and converts\n * it into a consistent representation. The output of this is `KeyValueArray` (which is an array\n * where\n * even indexes contain keys and odd indexes contain values for those keys).\n *\n * The advantage of converting to `KeyValueArray` is that we can perform diff in an input\n * independent\n * way.\n * (ie we can compare `foo bar` to `['bar', 'baz'] and determine a set of changes which need to be\n * applied)\n *\n * The fact that `KeyValueArray` is sorted is very important because it allows us to compute the\n * difference in linear fashion without the need to allocate any additional data.\n *\n * For example if we kept this as a `Map` we would have to iterate over previous `Map` to determine\n * which values need to be deleted, over the new `Map` to determine additions, and we would have to\n * keep additional `Map` to keep track of duplicates or items which have not yet been visited.\n *\n * @param keyValueArraySet (See `keyValueArraySet` in \"util/array_utils\") Gets passed in as a\n *        function so that `style` can be processed. This is done\n *        for tree shaking purposes.\n * @param stringParser The parser is passed in so that it will be tree shakable. See\n *        `styleStringParser` and `classStringParser`\n * @param value The value to parse/convert to `KeyValueArray`\n */\nfunction toStylingKeyValueArray(keyValueArraySet, stringParser, value) {\n    if (value == null /*|| value === undefined */ || value === '')\n        return EMPTY_ARRAY;\n    const styleKeyValueArray = [];\n    const unwrappedValue = unwrapSafeValue(value);\n    if (Array.isArray(unwrappedValue)) {\n        for (let i = 0; i < unwrappedValue.length; i++) {\n            keyValueArraySet(styleKeyValueArray, unwrappedValue[i], true);\n        }\n    }\n    else if (typeof unwrappedValue === 'object') {\n        for (const key in unwrappedValue) {\n            if (unwrappedValue.hasOwnProperty(key)) {\n                keyValueArraySet(styleKeyValueArray, key, unwrappedValue[key]);\n            }\n        }\n    }\n    else if (typeof unwrappedValue === 'string') {\n        stringParser(styleKeyValueArray, unwrappedValue);\n    }\n    else {\n        ngDevMode &&\n            throwError('Unsupported styling type ' + typeof unwrappedValue + ': ' + unwrappedValue);\n    }\n    return styleKeyValueArray;\n}\n/**\n * Set a `value` for a `key`.\n *\n * See: `keyValueArraySet` for details\n *\n * @param keyValueArray KeyValueArray to add to.\n * @param key Style key to add.\n * @param value The value to set.\n */\nfunction styleKeyValueArraySet(keyValueArray, key, value) {\n    keyValueArraySet(keyValueArray, key, unwrapSafeValue(value));\n}\n/**\n * Class-binding-specific function for setting the `value` for a `key`.\n *\n * See: `keyValueArraySet` for details\n *\n * @param keyValueArray KeyValueArray to add to.\n * @param key Style key to add.\n * @param value The value to set.\n */\nfunction classKeyValueArraySet(keyValueArray, key, value) {\n    // We use `classList.add` to eventually add the CSS classes to the DOM node. Any value passed into\n    // `add` is stringified and added to the `class` attribute, e.g. even null, undefined or numbers\n    // will be added. Stringify the key here so that our internal data structure matches the value in\n    // the DOM. The only exceptions are empty strings and strings that contain spaces for which\n    // the browser throws an error. We ignore such values, because the error is somewhat cryptic.\n    const stringKey = String(key);\n    if (stringKey !== '' && !stringKey.includes(' ')) {\n        keyValueArraySet(keyValueArray, stringKey, value);\n    }\n}\n/**\n * Update map based styling.\n *\n * Map based styling could be anything which contains more than one binding. For example `string`,\n * or object literal. Dealing with all of these types would complicate the logic so\n * instead this function expects that the complex input is first converted into normalized\n * `KeyValueArray`. The advantage of normalization is that we get the values sorted, which makes it\n * very cheap to compute deltas between the previous and current value.\n *\n * @param tView Associated `TView.data` contains the linked list of binding priorities.\n * @param tNode `TNode` where the binding is located.\n * @param lView `LView` contains the values associated with other styling binding at this `TNode`.\n * @param renderer Renderer to use if any updates.\n * @param oldKeyValueArray Previous value represented as `KeyValueArray`\n * @param newKeyValueArray Current value represented as `KeyValueArray`\n * @param isClassBased `true` if `class` (`false` if `style`)\n * @param bindingIndex Binding index of the binding.\n */\nfunction updateStylingMap(tView, tNode, lView, renderer, oldKeyValueArray, newKeyValueArray, isClassBased, bindingIndex) {\n    if (oldKeyValueArray === NO_CHANGE) {\n        // On first execution the oldKeyValueArray is NO_CHANGE => treat it as empty KeyValueArray.\n        oldKeyValueArray = EMPTY_ARRAY;\n    }\n    let oldIndex = 0;\n    let newIndex = 0;\n    let oldKey = 0 < oldKeyValueArray.length ? oldKeyValueArray[0] : null;\n    let newKey = 0 < newKeyValueArray.length ? newKeyValueArray[0] : null;\n    while (oldKey !== null || newKey !== null) {\n        ngDevMode && assertLessThan(oldIndex, 999, 'Are we stuck in infinite loop?');\n        ngDevMode && assertLessThan(newIndex, 999, 'Are we stuck in infinite loop?');\n        const oldValue = oldIndex < oldKeyValueArray.length ? oldKeyValueArray[oldIndex + 1] : undefined;\n        const newValue = newIndex < newKeyValueArray.length ? newKeyValueArray[newIndex + 1] : undefined;\n        let setKey = null;\n        let setValue = undefined;\n        if (oldKey === newKey) {\n            // UPDATE: Keys are equal => new value is overwriting old value.\n            oldIndex += 2;\n            newIndex += 2;\n            if (oldValue !== newValue) {\n                setKey = newKey;\n                setValue = newValue;\n            }\n        }\n        else if (newKey === null || oldKey !== null && oldKey < newKey) {\n            // DELETE: oldKey key is missing or we did not find the oldKey in the newValue\n            // (because the keyValueArray is sorted and `newKey` is found later alphabetically).\n            // `\"background\" < \"color\"` so we need to delete `\"background\"` because it is not found in the\n            // new array.\n            oldIndex += 2;\n            setKey = oldKey;\n        }\n        else {\n            // CREATE: newKey's is earlier alphabetically than oldKey's (or no oldKey) => we have new key.\n            // `\"color\" > \"background\"` so we need to add `color` because it is in new array but not in\n            // old array.\n            ngDevMode && assertDefined(newKey, 'Expecting to have a valid key');\n            newIndex += 2;\n            setKey = newKey;\n            setValue = newValue;\n        }\n        if (setKey !== null) {\n            updateStyling(tView, tNode, lView, renderer, setKey, setValue, isClassBased, bindingIndex);\n        }\n        oldKey = oldIndex < oldKeyValueArray.length ? oldKeyValueArray[oldIndex] : null;\n        newKey = newIndex < newKeyValueArray.length ? newKeyValueArray[newIndex] : null;\n    }\n}\n/**\n * Update a simple (property name) styling.\n *\n * This function takes `prop` and updates the DOM to that value. The function takes the binding\n * value as well as binding priority into consideration to determine which value should be written\n * to DOM. (For example it may be determined that there is a higher priority overwrite which blocks\n * the DOM write, or if the value goes to `undefined` a lower priority overwrite may be consulted.)\n *\n * @param tView Associated `TView.data` contains the linked list of binding priorities.\n * @param tNode `TNode` where the binding is located.\n * @param lView `LView` contains the values associated with other styling binding at this `TNode`.\n * @param renderer Renderer to use if any updates.\n * @param prop Either style property name or a class name.\n * @param value Either style value for `prop` or `true`/`false` if `prop` is class.\n * @param isClassBased `true` if `class` (`false` if `style`)\n * @param bindingIndex Binding index of the binding.\n */\nfunction updateStyling(tView, tNode, lView, renderer, prop, value, isClassBased, bindingIndex) {\n    if (!(tNode.type & 3 /* TNodeType.AnyRNode */)) {\n        // It is possible to have styling on non-elements (such as ng-container).\n        // This is rare, but it does happen. In such a case, just ignore the binding.\n        return;\n    }\n    const tData = tView.data;\n    const tRange = tData[bindingIndex + 1];\n    const higherPriorityValue = getTStylingRangeNextDuplicate(tRange) ?\n        findStylingValue(tData, tNode, lView, prop, getTStylingRangeNext(tRange), isClassBased) :\n        undefined;\n    if (!isStylingValuePresent(higherPriorityValue)) {\n        // We don't have a next duplicate, or we did not find a duplicate value.\n        if (!isStylingValuePresent(value)) {\n            // We should delete current value or restore to lower priority value.\n            if (getTStylingRangePrevDuplicate(tRange)) {\n                // We have a possible prev duplicate, let's retrieve it.\n                value = findStylingValue(tData, null, lView, prop, bindingIndex, isClassBased);\n            }\n        }\n        const rNode = getNativeByIndex(getSelectedIndex(), lView);\n        applyStyling(renderer, isClassBased, rNode, prop, value);\n    }\n}\n/**\n * Search for styling value with higher priority which is overwriting current value, or a\n * value of lower priority to which we should fall back if the value is `undefined`.\n *\n * When value is being applied at a location, related values need to be consulted.\n * - If there is a higher priority binding, we should be using that one instead.\n *   For example `<div  [style]=\"{color:exp1}\" [style.color]=\"exp2\">` change to `exp1`\n *   requires that we check `exp2` to see if it is set to value other than `undefined`.\n * - If there is a lower priority binding and we are changing to `undefined`\n *   For example `<div  [style]=\"{color:exp1}\" [style.color]=\"exp2\">` change to `exp2` to\n *   `undefined` requires that we check `exp1` (and static values) and use that as new value.\n *\n * NOTE: The styling stores two values.\n * 1. The raw value which came from the application is stored at `index + 0` location. (This value\n *    is used for dirty checking).\n * 2. The normalized value is stored at `index + 1`.\n *\n * @param tData `TData` used for traversing the priority.\n * @param tNode `TNode` to use for resolving static styling. Also controls search direction.\n *   - `TNode` search next and quit as soon as `isStylingValuePresent(value)` is true.\n *      If no value found consult `tNode.residualStyle`/`tNode.residualClass` for default value.\n *   - `null` search prev and go all the way to end. Return last value where\n *     `isStylingValuePresent(value)` is true.\n * @param lView `LView` used for retrieving the actual values.\n * @param prop Property which we are interested in.\n * @param index Starting index in the linked list of styling bindings where the search should start.\n * @param isClassBased `true` if `class` (`false` if `style`)\n */\nfunction findStylingValue(tData, tNode, lView, prop, index, isClassBased) {\n    // `TNode` to use for resolving static styling. Also controls search direction.\n    //   - `TNode` search next and quit as soon as `isStylingValuePresent(value)` is true.\n    //      If no value found consult `tNode.residualStyle`/`tNode.residualClass` for default value.\n    //   - `null` search prev and go all the way to end. Return last value where\n    //     `isStylingValuePresent(value)` is true.\n    const isPrevDirection = tNode === null;\n    let value = undefined;\n    while (index > 0) {\n        const rawKey = tData[index];\n        const containsStatics = Array.isArray(rawKey);\n        // Unwrap the key if we contain static values.\n        const key = containsStatics ? rawKey[1] : rawKey;\n        const isStylingMap = key === null;\n        let valueAtLViewIndex = lView[index + 1];\n        if (valueAtLViewIndex === NO_CHANGE) {\n            // In firstUpdatePass the styling instructions create a linked list of styling.\n            // On subsequent passes it is possible for a styling instruction to try to read a binding\n            // which\n            // has not yet executed. In that case we will find `NO_CHANGE` and we should assume that\n            // we have `undefined` (or empty array in case of styling-map instruction) instead. This\n            // allows the resolution to apply the value (which may later be overwritten when the\n            // binding actually executes.)\n            valueAtLViewIndex = isStylingMap ? EMPTY_ARRAY : undefined;\n        }\n        let currentValue = isStylingMap ? keyValueArrayGet(valueAtLViewIndex, prop) :\n            (key === prop ? valueAtLViewIndex : undefined);\n        if (containsStatics && !isStylingValuePresent(currentValue)) {\n            currentValue = keyValueArrayGet(rawKey, prop);\n        }\n        if (isStylingValuePresent(currentValue)) {\n            value = currentValue;\n            if (isPrevDirection) {\n                return value;\n            }\n        }\n        const tRange = tData[index + 1];\n        index = isPrevDirection ? getTStylingRangePrev(tRange) : getTStylingRangeNext(tRange);\n    }\n    if (tNode !== null) {\n        // in case where we are going in next direction AND we did not find anything, we need to\n        // consult residual styling\n        let residual = isClassBased ? tNode.residualClasses : tNode.residualStyles;\n        if (residual != null /** OR residual !=== undefined */) {\n            value = keyValueArrayGet(residual, prop);\n        }\n    }\n    return value;\n}\n/**\n * Determines if the binding value should be used (or if the value is 'undefined' and hence priority\n * resolution should be used.)\n *\n * @param value Binding style value.\n */\nfunction isStylingValuePresent(value) {\n    // Currently only `undefined` value is considered non-binding. That is `undefined` says I don't\n    // have an opinion as to what this binding should be and you should consult other bindings by\n    // priority to determine the valid value.\n    // This is extracted into a single function so that we have a single place to control this.\n    return value !== undefined;\n}\n/**\n * Normalizes and/or adds a suffix to the value.\n *\n * If value is `null`/`undefined` no suffix is added\n * @param value\n * @param suffix\n */\nfunction normalizeSuffix(value, suffix) {\n    if (value == null || value === '') {\n        // do nothing\n        // Do not add the suffix if the value is going to be empty.\n        // As it produce invalid CSS, which the browsers will automatically omit but Domino will not.\n        // Example: `\"left\": \"px;\"` instead of `\"left\": \"\"`.\n    }\n    else if (typeof suffix === 'string') {\n        value = value + suffix;\n    }\n    else if (typeof value === 'object') {\n        value = stringify(unwrapSafeValue(value));\n    }\n    return value;\n}\n/**\n * Tests if the `TNode` has input shadow.\n *\n * An input shadow is when a directive steals (shadows) the input by using `@Input('style')` or\n * `@Input('class')` as input.\n *\n * @param tNode `TNode` which we would like to see if it has shadow.\n * @param isClassBased `true` if `class` (`false` if `style`)\n */\nfunction hasStylingInputShadow(tNode, isClassBased) {\n    return (tNode.flags & (isClassBased ? 8 /* TNodeFlags.hasClassInput */ : 16 /* TNodeFlags.hasStyleInput */)) !== 0;\n}\n\n/**\n * Create static text node\n *\n * @param index Index of the node in the data array\n * @param value Static string value to write.\n *\n * @codeGenApi\n */\nfunction ɵɵtext(index, value = '') {\n    const lView = getLView();\n    const tView = getTView();\n    const adjustedIndex = index + HEADER_OFFSET;\n    ngDevMode &&\n        assertEqual(getBindingIndex(), tView.bindingStartIndex, 'text nodes should be created before any bindings');\n    ngDevMode && assertIndexInRange(lView, adjustedIndex);\n    const tNode = tView.firstCreatePass ?\n        getOrCreateTNode(tView, adjustedIndex, 1 /* TNodeType.Text */, value, null) :\n        tView.data[adjustedIndex];\n    const textNative = lView[adjustedIndex] = createTextNode(lView[RENDERER], value);\n    appendChild(tView, lView, textNative, tNode);\n    // Text nodes are self closing.\n    setCurrentTNode(tNode, false);\n}\n\n/**\n *\n * Update text content with a lone bound value\n *\n * Used when a text node has 1 interpolated value in it, an no additional text\n * surrounds that interpolated value:\n *\n * ```html\n * <div>{{v0}}</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate(v0);\n * ```\n * @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\nfunction ɵɵtextInterpolate(v0) {\n    ɵɵtextInterpolate1('', v0, '');\n    return ɵɵtextInterpolate;\n}\n/**\n *\n * Update text content with single bound value surrounded by other text.\n *\n * Used when a text node has 1 interpolated value in it:\n *\n * ```html\n * <div>prefix{{v0}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate1('prefix', v0, 'suffix');\n * ```\n * @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\nfunction ɵɵtextInterpolate1(prefix, v0, suffix) {\n    const lView = getLView();\n    const interpolated = interpolation1(lView, prefix, v0, suffix);\n    if (interpolated !== NO_CHANGE) {\n        textBindingInternal(lView, getSelectedIndex(), interpolated);\n    }\n    return ɵɵtextInterpolate1;\n}\n/**\n *\n * Update text content with 2 bound values surrounded by other text.\n *\n * Used when a text node has 2 interpolated values in it:\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate2('prefix', v0, '-', v1, 'suffix');\n * ```\n * @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\nfunction ɵɵtextInterpolate2(prefix, v0, i0, v1, suffix) {\n    const lView = getLView();\n    const interpolated = interpolation2(lView, prefix, v0, i0, v1, suffix);\n    if (interpolated !== NO_CHANGE) {\n        textBindingInternal(lView, getSelectedIndex(), interpolated);\n    }\n    return ɵɵtextInterpolate2;\n}\n/**\n *\n * Update text content with 3 bound values surrounded by other text.\n *\n * Used when a text node has 3 interpolated values in it:\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}-{{v2}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate3(\n * 'prefix', v0, '-', v1, '-', v2, 'suffix');\n * ```\n * @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\nfunction ɵɵtextInterpolate3(prefix, v0, i0, v1, i1, v2, suffix) {\n    const lView = getLView();\n    const interpolated = interpolation3(lView, prefix, v0, i0, v1, i1, v2, suffix);\n    if (interpolated !== NO_CHANGE) {\n        textBindingInternal(lView, getSelectedIndex(), interpolated);\n    }\n    return ɵɵtextInterpolate3;\n}\n/**\n *\n * Update text content with 4 bound values surrounded by other text.\n *\n * Used when a text node has 4 interpolated values in it:\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate4(\n * 'prefix', v0, '-', v1, '-', v2, '-', v3, 'suffix');\n * ```\n * @returns itself, so that it may be chained.\n * @see ɵɵtextInterpolateV\n * @codeGenApi\n */\nfunction ɵɵtextInterpolate4(prefix, v0, i0, v1, i1, v2, i2, v3, suffix) {\n    const lView = getLView();\n    const interpolated = interpolation4(lView, prefix, v0, i0, v1, i1, v2, i2, v3, suffix);\n    if (interpolated !== NO_CHANGE) {\n        textBindingInternal(lView, getSelectedIndex(), interpolated);\n    }\n    return ɵɵtextInterpolate4;\n}\n/**\n *\n * Update text content with 5 bound values surrounded by other text.\n *\n * Used when a text node has 5 interpolated values in it:\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate5(\n * 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, 'suffix');\n * ```\n * @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\nfunction ɵɵtextInterpolate5(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix) {\n    const lView = getLView();\n    const interpolated = interpolation5(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix);\n    if (interpolated !== NO_CHANGE) {\n        textBindingInternal(lView, getSelectedIndex(), interpolated);\n    }\n    return ɵɵtextInterpolate5;\n}\n/**\n *\n * Update text content with 6 bound values surrounded by other text.\n *\n * Used when a text node has 6 interpolated values in it:\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate6(\n *    'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, 'suffix');\n * ```\n *\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change. @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\nfunction ɵɵtextInterpolate6(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix) {\n    const lView = getLView();\n    const interpolated = interpolation6(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix);\n    if (interpolated !== NO_CHANGE) {\n        textBindingInternal(lView, getSelectedIndex(), interpolated);\n    }\n    return ɵɵtextInterpolate6;\n}\n/**\n *\n * Update text content with 7 bound values surrounded by other text.\n *\n * Used when a text node has 7 interpolated values in it:\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate7(\n *    'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, 'suffix');\n * ```\n * @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\nfunction ɵɵtextInterpolate7(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix) {\n    const lView = getLView();\n    const interpolated = interpolation7(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix);\n    if (interpolated !== NO_CHANGE) {\n        textBindingInternal(lView, getSelectedIndex(), interpolated);\n    }\n    return ɵɵtextInterpolate7;\n}\n/**\n *\n * Update text content with 8 bound values surrounded by other text.\n *\n * Used when a text node has 8 interpolated values in it:\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate8(\n *  'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, 'suffix');\n * ```\n * @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\nfunction ɵɵtextInterpolate8(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix) {\n    const lView = getLView();\n    const interpolated = interpolation8(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix);\n    if (interpolated !== NO_CHANGE) {\n        textBindingInternal(lView, getSelectedIndex(), interpolated);\n    }\n    return ɵɵtextInterpolate8;\n}\n/**\n * Update text content with 9 or more bound values other surrounded by text.\n *\n * Used when the number of interpolated values exceeds 8.\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}-{{v8}}-{{v9}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolateV(\n *  ['prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, '-', v9,\n *  'suffix']);\n * ```\n *.\n * @param values The collection of values and the strings in between those values, beginning with\n * a string prefix and ending with a string suffix.\n * (e.g. `['prefix', value0, '-', value1, '-', value2, ..., value99, 'suffix']`)\n *\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵtextInterpolateV(values) {\n    const lView = getLView();\n    const interpolated = interpolationV(lView, values);\n    if (interpolated !== NO_CHANGE) {\n        textBindingInternal(lView, getSelectedIndex(), interpolated);\n    }\n    return ɵɵtextInterpolateV;\n}\n\n/**\n *\n * Update an interpolated class on an element with single bound value surrounded by text.\n *\n * Used when the value passed to a property has 1 interpolated value in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate1('prefix', v0, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵclassMapInterpolate1(prefix, v0, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation1(lView, prefix, v0, suffix);\n    checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n *\n * Update an interpolated class on an element with 2 bound values surrounded by text.\n *\n * Used when the value passed to a property has 2 interpolated values in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}-{{v1}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate2('prefix', v0, '-', v1, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵclassMapInterpolate2(prefix, v0, i0, v1, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation2(lView, prefix, v0, i0, v1, suffix);\n    checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n *\n * Update an interpolated class on an element with 3 bound values surrounded by text.\n *\n * Used when the value passed to a property has 3 interpolated values in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}-{{v1}}-{{v2}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate3(\n * 'prefix', v0, '-', v1, '-', v2, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵclassMapInterpolate3(prefix, v0, i0, v1, i1, v2, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation3(lView, prefix, v0, i0, v1, i1, v2, suffix);\n    checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n *\n * Update an interpolated class on an element with 4 bound values surrounded by text.\n *\n * Used when the value passed to a property has 4 interpolated values in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate4(\n * 'prefix', v0, '-', v1, '-', v2, '-', v3, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵclassMapInterpolate4(prefix, v0, i0, v1, i1, v2, i2, v3, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation4(lView, prefix, v0, i0, v1, i1, v2, i2, v3, suffix);\n    checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n *\n * Update an interpolated class on an element with 5 bound values surrounded by text.\n *\n * Used when the value passed to a property has 5 interpolated values in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate5(\n * 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵclassMapInterpolate5(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation5(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix);\n    checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n *\n * Update an interpolated class on an element with 6 bound values surrounded by text.\n *\n * Used when the value passed to a property has 6 interpolated values in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate6(\n *    'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵclassMapInterpolate6(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation6(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix);\n    checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n *\n * Update an interpolated class on an element with 7 bound values surrounded by text.\n *\n * Used when the value passed to a property has 7 interpolated values in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate7(\n *    'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵclassMapInterpolate7(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation7(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix);\n    checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n *\n * Update an interpolated class on an element with 8 bound values surrounded by text.\n *\n * Used when the value passed to a property has 8 interpolated values in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate8(\n *  'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param i6 Static value used for concatenation only.\n * @param v7 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵclassMapInterpolate8(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation8(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix);\n    checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n * Update an interpolated class on an element with 9 or more bound values surrounded by text.\n *\n * Used when the number of interpolated values exceeds 8.\n *\n * ```html\n * <div\n *  class=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}-{{v8}}-{{v9}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolateV(\n *  ['prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, '-', v9,\n *  'suffix']);\n * ```\n *.\n * @param values The collection of values and the strings in-between those values, beginning with\n * a string prefix and ending with a string suffix.\n * (e.g. `['prefix', value0, '-', value1, '-', value2, ..., value99, 'suffix']`)\n * @codeGenApi\n */\nfunction ɵɵclassMapInterpolateV(values) {\n    const lView = getLView();\n    const interpolatedValue = interpolationV(lView, values);\n    checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n\n/**\n *\n * Update an interpolated style on an element with single bound value surrounded by text.\n *\n * Used when the value passed to a property has 1 interpolated value in it:\n *\n * ```html\n * <div style=\"key: {{v0}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate1('key: ', v0, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵstyleMapInterpolate1(prefix, v0, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation1(lView, prefix, v0, suffix);\n    ɵɵstyleMap(interpolatedValue);\n}\n/**\n *\n * Update an interpolated style on an element with 2 bound values surrounded by text.\n *\n * Used when the value passed to a property has 2 interpolated values in it:\n *\n * ```html\n * <div style=\"key: {{v0}}; key1: {{v1}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate2('key: ', v0, '; key1: ', v1, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵstyleMapInterpolate2(prefix, v0, i0, v1, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation2(lView, prefix, v0, i0, v1, suffix);\n    ɵɵstyleMap(interpolatedValue);\n}\n/**\n *\n * Update an interpolated style on an element with 3 bound values surrounded by text.\n *\n * Used when the value passed to a property has 3 interpolated values in it:\n *\n * ```html\n * <div style=\"key: {{v0}}; key2: {{v1}}; key2: {{v2}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate3(\n *     'key: ', v0, '; key1: ', v1, '; key2: ', v2, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵstyleMapInterpolate3(prefix, v0, i0, v1, i1, v2, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation3(lView, prefix, v0, i0, v1, i1, v2, suffix);\n    ɵɵstyleMap(interpolatedValue);\n}\n/**\n *\n * Update an interpolated style on an element with 4 bound values surrounded by text.\n *\n * Used when the value passed to a property has 4 interpolated values in it:\n *\n * ```html\n * <div style=\"key: {{v0}}; key1: {{v1}}; key2: {{v2}}; key3: {{v3}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate4(\n *     'key: ', v0, '; key1: ', v1, '; key2: ', v2, '; key3: ', v3, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵstyleMapInterpolate4(prefix, v0, i0, v1, i1, v2, i2, v3, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation4(lView, prefix, v0, i0, v1, i1, v2, i2, v3, suffix);\n    ɵɵstyleMap(interpolatedValue);\n}\n/**\n *\n * Update an interpolated style on an element with 5 bound values surrounded by text.\n *\n * Used when the value passed to a property has 5 interpolated values in it:\n *\n * ```html\n * <div style=\"key: {{v0}}; key1: {{v1}}; key2: {{v2}}; key3: {{v3}}; key4: {{v4}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate5(\n *     'key: ', v0, '; key1: ', v1, '; key2: ', v2, '; key3: ', v3, '; key4: ', v4, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵstyleMapInterpolate5(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation5(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix);\n    ɵɵstyleMap(interpolatedValue);\n}\n/**\n *\n * Update an interpolated style on an element with 6 bound values surrounded by text.\n *\n * Used when the value passed to a property has 6 interpolated values in it:\n *\n * ```html\n * <div style=\"key: {{v0}}; key1: {{v1}}; key2: {{v2}}; key3: {{v3}}; key4: {{v4}};\n *             key5: {{v5}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate6(\n *    'key: ', v0, '; key1: ', v1, '; key2: ', v2, '; key3: ', v3, '; key4: ', v4, '; key5: ', v5,\n *    'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵstyleMapInterpolate6(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation6(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix);\n    ɵɵstyleMap(interpolatedValue);\n}\n/**\n *\n * Update an interpolated style on an element with 7 bound values surrounded by text.\n *\n * Used when the value passed to a property has 7 interpolated values in it:\n *\n * ```html\n * <div style=\"key: {{v0}}; key1: {{v1}}; key2: {{v2}}; key3: {{v3}}; key4: {{v4}}; key5: {{v5}};\n *             key6: {{v6}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate7(\n *    'key: ', v0, '; key1: ', v1, '; key2: ', v2, '; key3: ', v3, '; key4: ', v4, '; key5: ', v5,\n *    '; key6: ', v6, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵstyleMapInterpolate7(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation7(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix);\n    ɵɵstyleMap(interpolatedValue);\n}\n/**\n *\n * Update an interpolated style on an element with 8 bound values surrounded by text.\n *\n * Used when the value passed to a property has 8 interpolated values in it:\n *\n * ```html\n * <div style=\"key: {{v0}}; key1: {{v1}}; key2: {{v2}}; key3: {{v3}}; key4: {{v4}}; key5: {{v5}};\n *             key6: {{v6}}; key7: {{v7}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate8(\n *    'key: ', v0, '; key1: ', v1, '; key2: ', v2, '; key3: ', v3, '; key4: ', v4, '; key5: ', v5,\n *    '; key6: ', v6, '; key7: ', v7, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param i6 Static value used for concatenation only.\n * @param v7 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\nfunction ɵɵstyleMapInterpolate8(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation8(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix);\n    ɵɵstyleMap(interpolatedValue);\n}\n/**\n * Update an interpolated style on an element with 9 or more bound values surrounded by text.\n *\n * Used when the number of interpolated values exceeds 8.\n *\n * ```html\n * <div\n *  class=\"key: {{v0}}; key1: {{v1}}; key2: {{v2}}; key3: {{v3}}; key4: {{v4}}; key5: {{v5}};\n *         key6: {{v6}}; key7: {{v7}}; key8: {{v8}}; key9: {{v9}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolateV(\n *    ['key: ', v0, '; key1: ', v1, '; key2: ', v2, '; key3: ', v3, '; key4: ', v4, '; key5: ', v5,\n *     '; key6: ', v6, '; key7: ', v7, '; key8: ', v8, '; key9: ', v9, 'suffix']);\n * ```\n *.\n * @param values The collection of values and the strings in-between those values, beginning with\n * a string prefix and ending with a string suffix.\n * (e.g. `['prefix', value0, '; key2: ', value1, '; key2: ', value2, ..., value99, 'suffix']`)\n * @codeGenApi\n */\nfunction ɵɵstyleMapInterpolateV(values) {\n    const lView = getLView();\n    const interpolatedValue = interpolationV(lView, values);\n    ɵɵstyleMap(interpolatedValue);\n}\n\n/**\n *\n * Update an interpolated style property on an element with single bound value surrounded by text.\n *\n * Used when the value passed to a property has 1 interpolated value in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate1(0, 'prefix', v0, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵstylePropInterpolate1(prop, prefix, v0, suffix, valueSuffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation1(lView, prefix, v0, suffix);\n    checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n    return ɵɵstylePropInterpolate1;\n}\n/**\n *\n * Update an interpolated style property on an element with 2 bound values surrounded by text.\n *\n * Used when the value passed to a property has 2 interpolated values in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}-{{v1}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate2(0, 'prefix', v0, '-', v1, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵstylePropInterpolate2(prop, prefix, v0, i0, v1, suffix, valueSuffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation2(lView, prefix, v0, i0, v1, suffix);\n    checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n    return ɵɵstylePropInterpolate2;\n}\n/**\n *\n * Update an interpolated style property on an element with 3 bound values surrounded by text.\n *\n * Used when the value passed to a property has 3 interpolated values in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}-{{v1}}-{{v2}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate3(0, 'prefix', v0, '-', v1, '-', v2, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵstylePropInterpolate3(prop, prefix, v0, i0, v1, i1, v2, suffix, valueSuffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation3(lView, prefix, v0, i0, v1, i1, v2, suffix);\n    checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n    return ɵɵstylePropInterpolate3;\n}\n/**\n *\n * Update an interpolated style property on an element with 4 bound values surrounded by text.\n *\n * Used when the value passed to a property has 4 interpolated values in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate4(0, 'prefix', v0, '-', v1, '-', v2, '-', v3, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵstylePropInterpolate4(prop, prefix, v0, i0, v1, i1, v2, i2, v3, suffix, valueSuffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation4(lView, prefix, v0, i0, v1, i1, v2, i2, v3, suffix);\n    checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n    return ɵɵstylePropInterpolate4;\n}\n/**\n *\n * Update an interpolated style property on an element with 5 bound values surrounded by text.\n *\n * Used when the value passed to a property has 5 interpolated values in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate5(0, 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵstylePropInterpolate5(prop, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix, valueSuffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation5(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix);\n    checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n    return ɵɵstylePropInterpolate5;\n}\n/**\n *\n * Update an interpolated style property on an element with 6 bound values surrounded by text.\n *\n * Used when the value passed to a property has 6 interpolated values in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate6(0, 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵstylePropInterpolate6(prop, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix, valueSuffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation6(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix);\n    checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n    return ɵɵstylePropInterpolate6;\n}\n/**\n *\n * Update an interpolated style property on an element with 7 bound values surrounded by text.\n *\n * Used when the value passed to a property has 7 interpolated values in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate7(\n *    0, 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵstylePropInterpolate7(prop, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix, valueSuffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation7(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix);\n    checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n    return ɵɵstylePropInterpolate7;\n}\n/**\n *\n * Update an interpolated style property on an element with 8 bound values surrounded by text.\n *\n * Used when the value passed to a property has 8 interpolated values in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate8(0, 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6,\n * '-', v7, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param i6 Static value used for concatenation only.\n * @param v7 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵstylePropInterpolate8(prop, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix, valueSuffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolation8(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix);\n    checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n    return ɵɵstylePropInterpolate8;\n}\n/**\n * Update an interpolated style property on an element with 9 or more bound values surrounded by\n * text.\n *\n * Used when the number of interpolated values exceeds 8.\n *\n * ```html\n * <div\n *  style.color=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}-{{v8}}-{{v9}}suffix\">\n * </div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolateV(\n *  0, ['prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, '-', v9,\n *  'suffix']);\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`..\n * @param values The collection of values and the strings in-between those values, beginning with\n * a string prefix and ending with a string suffix.\n * (e.g. `['prefix', value0, '-', value1, '-', value2, ..., value99, 'suffix']`)\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\nfunction ɵɵstylePropInterpolateV(prop, values, valueSuffix) {\n    const lView = getLView();\n    const interpolatedValue = interpolationV(lView, values);\n    checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n    return ɵɵstylePropInterpolateV;\n}\n\n/**\n * Update a property on a host element. Only applies to native node properties, not inputs.\n *\n * Operates on the element selected by index via the {@link select} instruction.\n *\n * @param propName Name of property. Because it is going to DOM, this is not subject to\n *        renaming as part of minification.\n * @param value New value to write.\n * @param sanitizer An optional function used to sanitize the value.\n * @returns This function returns itself so that it may be chained\n * (e.g. `property('name', ctx.name)('title', ctx.title)`)\n *\n * @codeGenApi\n */\nfunction ɵɵhostProperty(propName, value, sanitizer) {\n    const lView = getLView();\n    const bindingIndex = nextBindingIndex();\n    if (bindingUpdated(lView, bindingIndex, value)) {\n        const tView = getTView();\n        const tNode = getSelectedTNode();\n        elementPropertyInternal(tView, tNode, lView, propName, value, lView[RENDERER], sanitizer, true);\n        ngDevMode && storePropertyBindingMetadata(tView.data, tNode, propName, bindingIndex);\n    }\n    return ɵɵhostProperty;\n}\n/**\n * Updates a synthetic host binding (e.g. `[@foo]`) on a component or directive.\n *\n * This instruction is for compatibility purposes and is designed to ensure that a\n * synthetic host binding (e.g. `@HostBinding('@foo')`) properly gets rendered in\n * the component's renderer. Normally all host bindings are evaluated with the parent\n * component's renderer, but, in the case of animation @triggers, they need to be\n * evaluated with the sub component's renderer (because that's where the animation\n * triggers are defined).\n *\n * Do not use this instruction as a replacement for `elementProperty`. This instruction\n * only exists to ensure compatibility with the ViewEngine's host binding behavior.\n *\n * @param index The index of the element to update in the data array\n * @param propName Name of property. Because it is going to DOM, this is not subject to\n *        renaming as part of minification.\n * @param value New value to write.\n * @param sanitizer An optional function used to sanitize the value.\n *\n * @codeGenApi\n */\nfunction ɵɵsyntheticHostProperty(propName, value, sanitizer) {\n    const lView = getLView();\n    const bindingIndex = nextBindingIndex();\n    if (bindingUpdated(lView, bindingIndex, value)) {\n        const tView = getTView();\n        const tNode = getSelectedTNode();\n        const currentDef = getCurrentDirectiveDef(tView.data);\n        const renderer = loadComponentRenderer(currentDef, tNode, lView);\n        elementPropertyInternal(tView, tNode, lView, propName, value, renderer, sanitizer, true);\n        ngDevMode && storePropertyBindingMetadata(tView.data, tNode, propName, bindingIndex);\n    }\n    return ɵɵsyntheticHostProperty;\n}\n\n/**\n * NOTE: changes to the `ngI18nClosureMode` name must be synced with `compiler-cli/src/tooling.ts`.\n */\nif (typeof ngI18nClosureMode === 'undefined') {\n    // These property accesses can be ignored because ngI18nClosureMode will be set to false\n    // when optimizing code and the whole if statement will be dropped.\n    // Make sure to refer to ngI18nClosureMode as ['ngI18nClosureMode'] for closure.\n    // NOTE: we need to have it in IIFE so that the tree-shaker is happy.\n    (function () {\n        // tslint:disable-next-line:no-toplevel-property-access\n        _global['ngI18nClosureMode'] =\n            // TODO(FW-1250): validate that this actually, you know, works.\n            // tslint:disable-next-line:no-toplevel-property-access\n            typeof goog !== 'undefined' && typeof goog.getMsg === 'function';\n    })();\n}\n\n// THIS CODE IS GENERATED - DO NOT MODIFY.\nconst u = undefined;\nfunction plural(val) {\n    const n = val, i = Math.floor(Math.abs(val)), v = val.toString().replace(/^[^.]*\\.?/, '').length;\n    if (i === 1 && v === 0)\n        return 1;\n    return 5;\n}\nvar localeEn = [\"en\", [[\"a\", \"p\"], [\"AM\", \"PM\"], u], [[\"AM\", \"PM\"], u, u], [[\"S\", \"M\", \"T\", \"W\", \"T\", \"F\", \"S\"], [\"Sun\", \"Mon\", \"Tue\", \"Wed\", \"Thu\", \"Fri\", \"Sat\"], [\"Sunday\", \"Monday\", \"Tuesday\", \"Wednesday\", \"Thursday\", \"Friday\", \"Saturday\"], [\"Su\", \"Mo\", \"Tu\", \"We\", \"Th\", \"Fr\", \"Sa\"]], u, [[\"J\", \"F\", \"M\", \"A\", \"M\", \"J\", \"J\", \"A\", \"S\", \"O\", \"N\", \"D\"], [\"Jan\", \"Feb\", \"Mar\", \"Apr\", \"May\", \"Jun\", \"Jul\", \"Aug\", \"Sep\", \"Oct\", \"Nov\", \"Dec\"], [\"January\", \"February\", \"March\", \"April\", \"May\", \"June\", \"July\", \"August\", \"September\", \"October\", \"November\", \"December\"]], u, [[\"B\", \"A\"], [\"BC\", \"AD\"], [\"Before Christ\", \"Anno Domini\"]], 0, [6, 0], [\"M/d/yy\", \"MMM d, y\", \"MMMM d, y\", \"EEEE, MMMM d, y\"], [\"h:mm a\", \"h:mm:ss a\", \"h:mm:ss a z\", \"h:mm:ss a zzzz\"], [\"{1}, {0}\", u, \"{1} 'at' {0}\", u], [\".\", \",\", \";\", \"%\", \"+\", \"-\", \"E\", \"×\", \"‰\", \"∞\", \"NaN\", \":\"], [\"#,##0.###\", \"#,##0%\", \"¤#,##0.00\", \"#E0\"], \"USD\", \"$\", \"US Dollar\", {}, \"ltr\", plural];\n\n/**\n * This const is used to store the locale data registered with `registerLocaleData`\n */\nlet LOCALE_DATA = {};\n/**\n * Register locale data to be used internally by Angular. See the\n * [\"I18n guide\"](guide/i18n-common-format-data-locale) to know how to import additional locale\n * data.\n *\n * The signature `registerLocaleData(data: any, extraData?: any)` is deprecated since v5.1\n */\nfunction registerLocaleData(data, localeId, extraData) {\n    if (typeof localeId !== 'string') {\n        extraData = localeId;\n        localeId = data[LocaleDataIndex.LocaleId];\n    }\n    localeId = localeId.toLowerCase().replace(/_/g, '-');\n    LOCALE_DATA[localeId] = data;\n    if (extraData) {\n        LOCALE_DATA[localeId][LocaleDataIndex.ExtraData] = extraData;\n    }\n}\n/**\n * Finds the locale data for a given locale.\n *\n * @param locale The locale code.\n * @returns The locale data.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n */\nfunction findLocaleData(locale) {\n    const normalizedLocale = normalizeLocale(locale);\n    let match = getLocaleData(normalizedLocale);\n    if (match) {\n        return match;\n    }\n    // let's try to find a parent locale\n    const parentLocale = normalizedLocale.split('-')[0];\n    match = getLocaleData(parentLocale);\n    if (match) {\n        return match;\n    }\n    if (parentLocale === 'en') {\n        return localeEn;\n    }\n    throw new RuntimeError(701 /* RuntimeErrorCode.MISSING_LOCALE_DATA */, ngDevMode && `Missing locale data for the locale \"${locale}\".`);\n}\n/**\n * Retrieves the default currency code for the given locale.\n *\n * The default is defined as the first currency which is still in use.\n *\n * @param locale The code of the locale whose currency code we want.\n * @returns The code of the default currency for the given locale.\n *\n */\nfunction getLocaleCurrencyCode(locale) {\n    const data = findLocaleData(locale);\n    return data[LocaleDataIndex.CurrencyCode] || null;\n}\n/**\n * Retrieves the plural function used by ICU expressions to determine the plural case to use\n * for a given locale.\n * @param locale A locale code for the locale format rules to use.\n * @returns The plural function for the locale.\n * @see `NgPlural`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n-overview)\n */\nfunction getLocalePluralCase(locale) {\n    const data = findLocaleData(locale);\n    return data[LocaleDataIndex.PluralCase];\n}\n/**\n * Helper function to get the given `normalizedLocale` from `LOCALE_DATA`\n * or from the global `ng.common.locale`.\n */\nfunction getLocaleData(normalizedLocale) {\n    if (!(normalizedLocale in LOCALE_DATA)) {\n        LOCALE_DATA[normalizedLocale] = _global.ng && _global.ng.common && _global.ng.common.locales &&\n            _global.ng.common.locales[normalizedLocale];\n    }\n    return LOCALE_DATA[normalizedLocale];\n}\n/**\n * Helper function to remove all the locale data from `LOCALE_DATA`.\n */\nfunction unregisterAllLocaleData() {\n    LOCALE_DATA = {};\n}\n/**\n * Index of each type of locale data from the locale data array\n */\nvar LocaleDataIndex;\n(function (LocaleDataIndex) {\n    LocaleDataIndex[LocaleDataIndex[\"LocaleId\"] = 0] = \"LocaleId\";\n    LocaleDataIndex[LocaleDataIndex[\"DayPeriodsFormat\"] = 1] = \"DayPeriodsFormat\";\n    LocaleDataIndex[LocaleDataIndex[\"DayPeriodsStandalone\"] = 2] = \"DayPeriodsStandalone\";\n    LocaleDataIndex[LocaleDataIndex[\"DaysFormat\"] = 3] = \"DaysFormat\";\n    LocaleDataIndex[LocaleDataIndex[\"DaysStandalone\"] = 4] = \"DaysStandalone\";\n    LocaleDataIndex[LocaleDataIndex[\"MonthsFormat\"] = 5] = \"MonthsFormat\";\n    LocaleDataIndex[LocaleDataIndex[\"MonthsStandalone\"] = 6] = \"MonthsStandalone\";\n    LocaleDataIndex[LocaleDataIndex[\"Eras\"] = 7] = \"Eras\";\n    LocaleDataIndex[LocaleDataIndex[\"FirstDayOfWeek\"] = 8] = \"FirstDayOfWeek\";\n    LocaleDataIndex[LocaleDataIndex[\"WeekendRange\"] = 9] = \"WeekendRange\";\n    LocaleDataIndex[LocaleDataIndex[\"DateFormat\"] = 10] = \"DateFormat\";\n    LocaleDataIndex[LocaleDataIndex[\"TimeFormat\"] = 11] = \"TimeFormat\";\n    LocaleDataIndex[LocaleDataIndex[\"DateTimeFormat\"] = 12] = \"DateTimeFormat\";\n    LocaleDataIndex[LocaleDataIndex[\"NumberSymbols\"] = 13] = \"NumberSymbols\";\n    LocaleDataIndex[LocaleDataIndex[\"NumberFormats\"] = 14] = \"NumberFormats\";\n    LocaleDataIndex[LocaleDataIndex[\"CurrencyCode\"] = 15] = \"CurrencyCode\";\n    LocaleDataIndex[LocaleDataIndex[\"CurrencySymbol\"] = 16] = \"CurrencySymbol\";\n    LocaleDataIndex[LocaleDataIndex[\"CurrencyName\"] = 17] = \"CurrencyName\";\n    LocaleDataIndex[LocaleDataIndex[\"Currencies\"] = 18] = \"Currencies\";\n    LocaleDataIndex[LocaleDataIndex[\"Directionality\"] = 19] = \"Directionality\";\n    LocaleDataIndex[LocaleDataIndex[\"PluralCase\"] = 20] = \"PluralCase\";\n    LocaleDataIndex[LocaleDataIndex[\"ExtraData\"] = 21] = \"ExtraData\";\n})(LocaleDataIndex || (LocaleDataIndex = {}));\n/**\n * Returns the canonical form of a locale name - lowercase with `_` replaced with `-`.\n */\nfunction normalizeLocale(locale) {\n    return locale.toLowerCase().replace(/_/g, '-');\n}\n\nconst pluralMapping = ['zero', 'one', 'two', 'few', 'many'];\n/**\n * Returns the plural case based on the locale\n */\nfunction getPluralCase(value, locale) {\n    const plural = getLocalePluralCase(locale)(parseInt(value, 10));\n    const result = pluralMapping[plural];\n    return (result !== undefined) ? result : 'other';\n}\n/**\n * The locale id that the application is using by default (for translations and ICU expressions).\n */\nconst DEFAULT_LOCALE_ID = 'en-US';\n/**\n * USD currency code that the application uses by default for CurrencyPipe when no\n * DEFAULT_CURRENCY_CODE is provided.\n */\nconst USD_CURRENCY_CODE = 'USD';\n\n/**\n * Marks that the next string is an element name.\n *\n * See `I18nMutateOpCodes` documentation.\n */\nconst ELEMENT_MARKER = {\n    marker: 'element'\n};\n/**\n * Marks that the next string is comment text need for ICU.\n *\n * See `I18nMutateOpCodes` documentation.\n */\nconst ICU_MARKER = {\n    marker: 'ICU'\n};\n/**\n * See `I18nCreateOpCodes`\n */\nvar I18nCreateOpCode;\n(function (I18nCreateOpCode) {\n    /**\n     * Number of bits to shift index so that it can be combined with the `APPEND_EAGERLY` and\n     * `COMMENT`.\n     */\n    I18nCreateOpCode[I18nCreateOpCode[\"SHIFT\"] = 2] = \"SHIFT\";\n    /**\n     * Should the node be appended to parent immediately after creation.\n     */\n    I18nCreateOpCode[I18nCreateOpCode[\"APPEND_EAGERLY\"] = 1] = \"APPEND_EAGERLY\";\n    /**\n     * If set the node should be comment (rather than a text) node.\n     */\n    I18nCreateOpCode[I18nCreateOpCode[\"COMMENT\"] = 2] = \"COMMENT\";\n})(I18nCreateOpCode || (I18nCreateOpCode = {}));\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\nconst unusedValueExportToPlacateAjd = 1;\n\n/**\n * The locale id that the application is currently using (for translations and ICU expressions).\n * This is the ivy version of `LOCALE_ID` that was defined as an injection token for the view engine\n * but is now defined as a global value.\n */\nlet LOCALE_ID$1 = DEFAULT_LOCALE_ID;\n/**\n * Sets the locale id that will be used for translations and ICU expressions.\n * This is the ivy version of `LOCALE_ID` that was defined as an injection token for the view engine\n * but is now defined as a global value.\n *\n * @param localeId\n */\nfunction setLocaleId(localeId) {\n    assertDefined(localeId, `Expected localeId to be defined`);\n    if (typeof localeId === 'string') {\n        LOCALE_ID$1 = localeId.toLowerCase().replace(/_/g, '-');\n    }\n}\n/**\n * Gets the locale id that will be used for translations and ICU expressions.\n * This is the ivy version of `LOCALE_ID` that was defined as an injection token for the view engine\n * but is now defined as a global value.\n */\nfunction getLocaleId() {\n    return LOCALE_ID$1;\n}\n\n/**\n * Find a node in front of which `currentTNode` should be inserted (takes i18n into account).\n *\n * This method determines the `RNode` in front of which we should insert the `currentRNode`. This\n * takes `TNode.insertBeforeIndex` into account.\n *\n * @param parentTNode parent `TNode`\n * @param currentTNode current `TNode` (The node which we would like to insert into the DOM)\n * @param lView current `LView`\n */\nfunction getInsertInFrontOfRNodeWithI18n(parentTNode, currentTNode, lView) {\n    const tNodeInsertBeforeIndex = currentTNode.insertBeforeIndex;\n    const insertBeforeIndex = Array.isArray(tNodeInsertBeforeIndex) ? tNodeInsertBeforeIndex[0] : tNodeInsertBeforeIndex;\n    if (insertBeforeIndex === null) {\n        return getInsertInFrontOfRNodeWithNoI18n(parentTNode, currentTNode, lView);\n    }\n    else {\n        ngDevMode && assertIndexInRange(lView, insertBeforeIndex);\n        return unwrapRNode(lView[insertBeforeIndex]);\n    }\n}\n/**\n * Process `TNode.insertBeforeIndex` by adding i18n text nodes.\n *\n * See `TNode.insertBeforeIndex`\n */\nfunction processI18nInsertBefore(renderer, childTNode, lView, childRNode, parentRElement) {\n    const tNodeInsertBeforeIndex = childTNode.insertBeforeIndex;\n    if (Array.isArray(tNodeInsertBeforeIndex)) {\n        // An array indicates that there are i18n nodes that need to be added as children of this\n        // `childRNode`. These i18n nodes were created before this `childRNode` was available and so\n        // only now can be added. The first element of the array is the normal index where we should\n        // insert the `childRNode`. Additional elements are the extra nodes to be added as children of\n        // `childRNode`.\n        ngDevMode && assertDomNode(childRNode);\n        let i18nParent = childRNode;\n        let anchorRNode = null;\n        if (!(childTNode.type & 3 /* TNodeType.AnyRNode */)) {\n            anchorRNode = i18nParent;\n            i18nParent = parentRElement;\n        }\n        if (i18nParent !== null && childTNode.componentOffset === -1) {\n            for (let i = 1; i < tNodeInsertBeforeIndex.length; i++) {\n                // No need to `unwrapRNode` because all of the indexes point to i18n text nodes.\n                // see `assertDomNode` below.\n                const i18nChild = lView[tNodeInsertBeforeIndex[i]];\n                nativeInsertBefore(renderer, i18nParent, i18nChild, anchorRNode, false);\n            }\n        }\n    }\n}\n\n/**\n * Add `tNode` to `previousTNodes` list and update relevant `TNode`s in `previousTNodes` list\n * `tNode.insertBeforeIndex`.\n *\n * Things to keep in mind:\n * 1. All i18n text nodes are encoded as `TNodeType.Element` and are created eagerly by the\n *    `ɵɵi18nStart` instruction.\n * 2. All `TNodeType.Placeholder` `TNodes` are elements which will be created later by\n *    `ɵɵelementStart` instruction.\n * 3. `ɵɵelementStart` instruction will create `TNode`s in the ascending `TNode.index` order. (So a\n *    smaller index `TNode` is guaranteed to be created before a larger one)\n *\n * We use the above three invariants to determine `TNode.insertBeforeIndex`.\n *\n * In an ideal world `TNode.insertBeforeIndex` would always be `TNode.next.index`. However,\n * this will not work because `TNode.next.index` may be larger than `TNode.index` which means that\n * the next node is not yet created and therefore we can't insert in front of it.\n *\n * Rule1: `TNode.insertBeforeIndex = null` if `TNode.next === null` (Initial condition, as we don't\n *        know if there will be further `TNode`s inserted after.)\n * Rule2: If `previousTNode` is created after the `tNode` being inserted, then\n *        `previousTNode.insertBeforeNode = tNode.index` (So when a new `tNode` is added we check\n *        previous to see if we can update its `insertBeforeTNode`)\n *\n * See `TNode.insertBeforeIndex` for more context.\n *\n * @param previousTNodes A list of previous TNodes so that we can easily traverse `TNode`s in\n *     reverse order. (If `TNode` would have `previous` this would not be necessary.)\n * @param newTNode A TNode to add to the `previousTNodes` list.\n */\nfunction addTNodeAndUpdateInsertBeforeIndex(previousTNodes, newTNode) {\n    // Start with Rule1\n    ngDevMode &&\n        assertEqual(newTNode.insertBeforeIndex, null, 'We expect that insertBeforeIndex is not set');\n    previousTNodes.push(newTNode);\n    if (previousTNodes.length > 1) {\n        for (let i = previousTNodes.length - 2; i >= 0; i--) {\n            const existingTNode = previousTNodes[i];\n            // Text nodes are created eagerly and so they don't need their `indexBeforeIndex` updated.\n            // It is safe to ignore them.\n            if (!isI18nText(existingTNode)) {\n                if (isNewTNodeCreatedBefore(existingTNode, newTNode) &&\n                    getInsertBeforeIndex(existingTNode) === null) {\n                    // If it was created before us in time, (and it does not yet have `insertBeforeIndex`)\n                    // then add the `insertBeforeIndex`.\n                    setInsertBeforeIndex(existingTNode, newTNode.index);\n                }\n            }\n        }\n    }\n}\nfunction isI18nText(tNode) {\n    return !(tNode.type & 64 /* TNodeType.Placeholder */);\n}\nfunction isNewTNodeCreatedBefore(existingTNode, newTNode) {\n    return isI18nText(newTNode) || existingTNode.index > newTNode.index;\n}\nfunction getInsertBeforeIndex(tNode) {\n    const index = tNode.insertBeforeIndex;\n    return Array.isArray(index) ? index[0] : index;\n}\nfunction setInsertBeforeIndex(tNode, value) {\n    const index = tNode.insertBeforeIndex;\n    if (Array.isArray(index)) {\n        // Array is stored if we have to insert child nodes. See `TNode.insertBeforeIndex`\n        index[0] = value;\n    }\n    else {\n        setI18nHandling(getInsertInFrontOfRNodeWithI18n, processI18nInsertBefore);\n        tNode.insertBeforeIndex = value;\n    }\n}\n\n/**\n * Retrieve `TIcu` at a given `index`.\n *\n * The `TIcu` can be stored either directly (if it is nested ICU) OR\n * it is stored inside tho `TIcuContainer` if it is top level ICU.\n *\n * The reason for this is that the top level ICU need a `TNode` so that they are part of the render\n * tree, but nested ICU's have no TNode, because we don't know ahead of time if the nested ICU is\n * expressed (parent ICU may have selected a case which does not contain it.)\n *\n * @param tView Current `TView`.\n * @param index Index where the value should be read from.\n */\nfunction getTIcu(tView, index) {\n    const value = tView.data[index];\n    if (value === null || typeof value === 'string')\n        return null;\n    if (ngDevMode &&\n        !(value.hasOwnProperty('tView') || value.hasOwnProperty('currentCaseLViewIndex'))) {\n        throwError('We expect to get \\'null\\'|\\'TIcu\\'|\\'TIcuContainer\\', but got: ' + value);\n    }\n    // Here the `value.hasOwnProperty('currentCaseLViewIndex')` is a polymorphic read as it can be\n    // either TIcu or TIcuContainerNode. This is not ideal, but we still think it is OK because it\n    // will be just two cases which fits into the browser inline cache (inline cache can take up to\n    // 4)\n    const tIcu = value.hasOwnProperty('currentCaseLViewIndex') ? value :\n        value.value;\n    ngDevMode && assertTIcu(tIcu);\n    return tIcu;\n}\n/**\n * Store `TIcu` at a give `index`.\n *\n * The `TIcu` can be stored either directly (if it is nested ICU) OR\n * it is stored inside tho `TIcuContainer` if it is top level ICU.\n *\n * The reason for this is that the top level ICU need a `TNode` so that they are part of the render\n * tree, but nested ICU's have no TNode, because we don't know ahead of time if the nested ICU is\n * expressed (parent ICU may have selected a case which does not contain it.)\n *\n * @param tView Current `TView`.\n * @param index Index where the value should be stored at in `Tview.data`\n * @param tIcu The TIcu to store.\n */\nfunction setTIcu(tView, index, tIcu) {\n    const tNode = tView.data[index];\n    ngDevMode &&\n        assertEqual(tNode === null || tNode.hasOwnProperty('tView'), true, 'We expect to get \\'null\\'|\\'TIcuContainer\\'');\n    if (tNode === null) {\n        tView.data[index] = tIcu;\n    }\n    else {\n        ngDevMode && assertTNodeType(tNode, 32 /* TNodeType.Icu */);\n        tNode.value = tIcu;\n    }\n}\n/**\n * Set `TNode.insertBeforeIndex` taking the `Array` into account.\n *\n * See `TNode.insertBeforeIndex`\n */\nfunction setTNodeInsertBeforeIndex(tNode, index) {\n    ngDevMode && assertTNode(tNode);\n    let insertBeforeIndex = tNode.insertBeforeIndex;\n    if (insertBeforeIndex === null) {\n        setI18nHandling(getInsertInFrontOfRNodeWithI18n, processI18nInsertBefore);\n        insertBeforeIndex = tNode.insertBeforeIndex =\n            [null /* may be updated to number later */, index];\n    }\n    else {\n        assertEqual(Array.isArray(insertBeforeIndex), true, 'Expecting array here');\n        insertBeforeIndex.push(index);\n    }\n}\n/**\n * Create `TNode.type=TNodeType.Placeholder` node.\n *\n * See `TNodeType.Placeholder` for more information.\n */\nfunction createTNodePlaceholder(tView, previousTNodes, index) {\n    const tNode = createTNodeAtIndex(tView, index, 64 /* TNodeType.Placeholder */, null, null);\n    addTNodeAndUpdateInsertBeforeIndex(previousTNodes, tNode);\n    return tNode;\n}\n/**\n * Returns current ICU case.\n *\n * ICU cases are stored as index into the `TIcu.cases`.\n * At times it is necessary to communicate that the ICU case just switched and that next ICU update\n * should update all bindings regardless of the mask. In such a case the we store negative numbers\n * for cases which have just been switched. This function removes the negative flag.\n */\nfunction getCurrentICUCaseIndex(tIcu, lView) {\n    const currentCase = lView[tIcu.currentCaseLViewIndex];\n    return currentCase === null ? currentCase : (currentCase < 0 ? ~currentCase : currentCase);\n}\nfunction getParentFromIcuCreateOpCode(mergedCode) {\n    return mergedCode >>> 17 /* IcuCreateOpCode.SHIFT_PARENT */;\n}\nfunction getRefFromIcuCreateOpCode(mergedCode) {\n    return (mergedCode & 131070 /* IcuCreateOpCode.MASK_REF */) >>> 1 /* IcuCreateOpCode.SHIFT_REF */;\n}\nfunction getInstructionFromIcuCreateOpCode(mergedCode) {\n    return mergedCode & 1 /* IcuCreateOpCode.MASK_INSTRUCTION */;\n}\nfunction icuCreateOpCode(opCode, parentIdx, refIdx) {\n    ngDevMode && assertGreaterThanOrEqual(parentIdx, 0, 'Missing parent index');\n    ngDevMode && assertGreaterThan(refIdx, 0, 'Missing ref index');\n    return opCode | parentIdx << 17 /* IcuCreateOpCode.SHIFT_PARENT */ | refIdx << 1 /* IcuCreateOpCode.SHIFT_REF */;\n}\n\n/**\n * Keep track of which input bindings in `ɵɵi18nExp` have changed.\n *\n * This is used to efficiently update expressions in i18n only when the corresponding input has\n * changed.\n *\n * 1) Each bit represents which of the `ɵɵi18nExp` has changed.\n * 2) There are 32 bits allowed in JS.\n * 3) Bit 32 is special as it is shared for all changes past 32. (In other words if you have more\n * than 32 `ɵɵi18nExp` then all changes past 32nd `ɵɵi18nExp` will be mapped to same bit. This means\n * that we may end up changing more than we need to. But i18n expressions with 32 bindings is rare\n * so in practice it should not be an issue.)\n */\nlet changeMask = 0b0;\n/**\n * Keeps track of which bit needs to be updated in `changeMask`\n *\n * This value gets incremented on every call to `ɵɵi18nExp`\n */\nlet changeMaskCounter = 0;\n/**\n * Keep track of which input bindings in `ɵɵi18nExp` have changed.\n *\n * `setMaskBit` gets invoked by each call to `ɵɵi18nExp`.\n *\n * @param hasChange did `ɵɵi18nExp` detect a change.\n */\nfunction setMaskBit(hasChange) {\n    if (hasChange) {\n        changeMask = changeMask | (1 << Math.min(changeMaskCounter, 31));\n    }\n    changeMaskCounter++;\n}\nfunction applyI18n(tView, lView, index) {\n    if (changeMaskCounter > 0) {\n        ngDevMode && assertDefined(tView, `tView should be defined`);\n        const tI18n = tView.data[index];\n        // When `index` points to an `ɵɵi18nAttributes` then we have an array otherwise `TI18n`\n        const updateOpCodes = Array.isArray(tI18n) ? tI18n : tI18n.update;\n        const bindingsStartIndex = getBindingIndex() - changeMaskCounter - 1;\n        applyUpdateOpCodes(tView, lView, updateOpCodes, bindingsStartIndex, changeMask);\n    }\n    // Reset changeMask & maskBit to default for the next update cycle\n    changeMask = 0b0;\n    changeMaskCounter = 0;\n}\n/**\n * Apply `I18nCreateOpCodes` op-codes as stored in `TI18n.create`.\n *\n * Creates text (and comment) nodes which are internationalized.\n *\n * @param lView Current lView\n * @param createOpCodes Set of op-codes to apply\n * @param parentRNode Parent node (so that direct children can be added eagerly) or `null` if it is\n *     a root node.\n * @param insertInFrontOf DOM node that should be used as an anchor.\n */\nfunction applyCreateOpCodes(lView, createOpCodes, parentRNode, insertInFrontOf) {\n    const renderer = lView[RENDERER];\n    for (let i = 0; i < createOpCodes.length; i++) {\n        const opCode = createOpCodes[i++];\n        const text = createOpCodes[i];\n        const isComment = (opCode & I18nCreateOpCode.COMMENT) === I18nCreateOpCode.COMMENT;\n        const appendNow = (opCode & I18nCreateOpCode.APPEND_EAGERLY) === I18nCreateOpCode.APPEND_EAGERLY;\n        const index = opCode >>> I18nCreateOpCode.SHIFT;\n        let rNode = lView[index];\n        if (rNode === null) {\n            // We only create new DOM nodes if they don't already exist: If ICU switches case back to a\n            // case which was already instantiated, no need to create new DOM nodes.\n            rNode = lView[index] =\n                isComment ? renderer.createComment(text) : createTextNode(renderer, text);\n        }\n        if (appendNow && parentRNode !== null) {\n            nativeInsertBefore(renderer, parentRNode, rNode, insertInFrontOf, false);\n        }\n    }\n}\n/**\n * Apply `I18nMutateOpCodes` OpCodes.\n *\n * @param tView Current `TView`\n * @param mutableOpCodes Mutable OpCodes to process\n * @param lView Current `LView`\n * @param anchorRNode place where the i18n node should be inserted.\n */\nfunction applyMutableOpCodes(tView, mutableOpCodes, lView, anchorRNode) {\n    ngDevMode && assertDomNode(anchorRNode);\n    const renderer = lView[RENDERER];\n    // `rootIdx` represents the node into which all inserts happen.\n    let rootIdx = null;\n    // `rootRNode` represents the real node into which we insert. This can be different from\n    // `lView[rootIdx]` if we have projection.\n    //  - null we don't have a parent (as can be the case in when we are inserting into a root of\n    //    LView which has no parent.)\n    //  - `RElement` The element representing the root after taking projection into account.\n    let rootRNode;\n    for (let i = 0; i < mutableOpCodes.length; i++) {\n        const opCode = mutableOpCodes[i];\n        if (typeof opCode == 'string') {\n            const textNodeIndex = mutableOpCodes[++i];\n            if (lView[textNodeIndex] === null) {\n                ngDevMode && ngDevMode.rendererCreateTextNode++;\n                ngDevMode && assertIndexInRange(lView, textNodeIndex);\n                lView[textNodeIndex] = createTextNode(renderer, opCode);\n            }\n        }\n        else if (typeof opCode == 'number') {\n            switch (opCode & 1 /* IcuCreateOpCode.MASK_INSTRUCTION */) {\n                case 0 /* IcuCreateOpCode.AppendChild */:\n                    const parentIdx = getParentFromIcuCreateOpCode(opCode);\n                    if (rootIdx === null) {\n                        // The first operation should save the `rootIdx` because the first operation\n                        // must insert into the root. (Only subsequent operations can insert into a dynamic\n                        // parent)\n                        rootIdx = parentIdx;\n                        rootRNode = nativeParentNode(renderer, anchorRNode);\n                    }\n                    let insertInFrontOf;\n                    let parentRNode;\n                    if (parentIdx === rootIdx) {\n                        insertInFrontOf = anchorRNode;\n                        parentRNode = rootRNode;\n                    }\n                    else {\n                        insertInFrontOf = null;\n                        parentRNode = unwrapRNode(lView[parentIdx]);\n                    }\n                    // FIXME(misko): Refactor with `processI18nText`\n                    if (parentRNode !== null) {\n                        // This can happen if the `LView` we are adding to is not attached to a parent `LView`.\n                        // In such a case there is no \"root\" we can attach to. This is fine, as we still need to\n                        // create the elements. When the `LView` gets later added to a parent these \"root\" nodes\n                        // get picked up and added.\n                        ngDevMode && assertDomNode(parentRNode);\n                        const refIdx = getRefFromIcuCreateOpCode(opCode);\n                        ngDevMode && assertGreaterThan(refIdx, HEADER_OFFSET, 'Missing ref');\n                        // `unwrapRNode` is not needed here as all of these point to RNodes as part of the i18n\n                        // which can't have components.\n                        const child = lView[refIdx];\n                        ngDevMode && assertDomNode(child);\n                        nativeInsertBefore(renderer, parentRNode, child, insertInFrontOf, false);\n                        const tIcu = getTIcu(tView, refIdx);\n                        if (tIcu !== null && typeof tIcu === 'object') {\n                            // If we just added a comment node which has ICU then that ICU may have already been\n                            // rendered and therefore we need to re-add it here.\n                            ngDevMode && assertTIcu(tIcu);\n                            const caseIndex = getCurrentICUCaseIndex(tIcu, lView);\n                            if (caseIndex !== null) {\n                                applyMutableOpCodes(tView, tIcu.create[caseIndex], lView, lView[tIcu.anchorIdx]);\n                            }\n                        }\n                    }\n                    break;\n                case 1 /* IcuCreateOpCode.Attr */:\n                    const elementNodeIndex = opCode >>> 1 /* IcuCreateOpCode.SHIFT_REF */;\n                    const attrName = mutableOpCodes[++i];\n                    const attrValue = mutableOpCodes[++i];\n                    // This code is used for ICU expressions only, since we don't support\n                    // directives/components in ICUs, we don't need to worry about inputs here\n                    setElementAttribute(renderer, getNativeByIndex(elementNodeIndex, lView), null, null, attrName, attrValue, null);\n                    break;\n                default:\n                    if (ngDevMode) {\n                        throw new RuntimeError(700 /* RuntimeErrorCode.INVALID_I18N_STRUCTURE */, `Unable to determine the type of mutate operation for \"${opCode}\"`);\n                    }\n            }\n        }\n        else {\n            switch (opCode) {\n                case ICU_MARKER:\n                    const commentValue = mutableOpCodes[++i];\n                    const commentNodeIndex = mutableOpCodes[++i];\n                    if (lView[commentNodeIndex] === null) {\n                        ngDevMode &&\n                            assertEqual(typeof commentValue, 'string', `Expected \"${commentValue}\" to be a comment node value`);\n                        ngDevMode && ngDevMode.rendererCreateComment++;\n                        ngDevMode && assertIndexInExpandoRange(lView, commentNodeIndex);\n                        const commentRNode = lView[commentNodeIndex] =\n                            createCommentNode(renderer, commentValue);\n                        // FIXME(misko): Attaching patch data is only needed for the root (Also add tests)\n                        attachPatchData(commentRNode, lView);\n                    }\n                    break;\n                case ELEMENT_MARKER:\n                    const tagName = mutableOpCodes[++i];\n                    const elementNodeIndex = mutableOpCodes[++i];\n                    if (lView[elementNodeIndex] === null) {\n                        ngDevMode &&\n                            assertEqual(typeof tagName, 'string', `Expected \"${tagName}\" to be an element node tag name`);\n                        ngDevMode && ngDevMode.rendererCreateElement++;\n                        ngDevMode && assertIndexInExpandoRange(lView, elementNodeIndex);\n                        const elementRNode = lView[elementNodeIndex] =\n                            createElementNode(renderer, tagName, null);\n                        // FIXME(misko): Attaching patch data is only needed for the root (Also add tests)\n                        attachPatchData(elementRNode, lView);\n                    }\n                    break;\n                default:\n                    ngDevMode &&\n                        throwError(`Unable to determine the type of mutate operation for \"${opCode}\"`);\n            }\n        }\n    }\n}\n/**\n * Apply `I18nUpdateOpCodes` OpCodes\n *\n * @param tView Current `TView`\n * @param lView Current `LView`\n * @param updateOpCodes OpCodes to process\n * @param bindingsStartIndex Location of the first `ɵɵi18nApply`\n * @param changeMask Each bit corresponds to a `ɵɵi18nExp` (Counting backwards from\n *     `bindingsStartIndex`)\n */\nfunction applyUpdateOpCodes(tView, lView, updateOpCodes, bindingsStartIndex, changeMask) {\n    for (let i = 0; i < updateOpCodes.length; i++) {\n        // bit code to check if we should apply the next update\n        const checkBit = updateOpCodes[i];\n        // Number of opCodes to skip until next set of update codes\n        const skipCodes = updateOpCodes[++i];\n        if (checkBit & changeMask) {\n            // The value has been updated since last checked\n            let value = '';\n            for (let j = i + 1; j <= (i + skipCodes); j++) {\n                const opCode = updateOpCodes[j];\n                if (typeof opCode == 'string') {\n                    value += opCode;\n                }\n                else if (typeof opCode == 'number') {\n                    if (opCode < 0) {\n                        // Negative opCode represent `i18nExp` values offset.\n                        value += renderStringify(lView[bindingsStartIndex - opCode]);\n                    }\n                    else {\n                        const nodeIndex = (opCode >>> 2 /* I18nUpdateOpCode.SHIFT_REF */);\n                        switch (opCode & 3 /* I18nUpdateOpCode.MASK_OPCODE */) {\n                            case 1 /* I18nUpdateOpCode.Attr */:\n                                const propName = updateOpCodes[++j];\n                                const sanitizeFn = updateOpCodes[++j];\n                                const tNodeOrTagName = tView.data[nodeIndex];\n                                ngDevMode && assertDefined(tNodeOrTagName, 'Experting TNode or string');\n                                if (typeof tNodeOrTagName === 'string') {\n                                    // IF we don't have a `TNode`, then we are an element in ICU (as ICU content does\n                                    // not have TNode), in which case we know that there are no directives, and hence\n                                    // we use attribute setting.\n                                    setElementAttribute(lView[RENDERER], lView[nodeIndex], null, tNodeOrTagName, propName, value, sanitizeFn);\n                                }\n                                else {\n                                    elementPropertyInternal(tView, tNodeOrTagName, lView, propName, value, lView[RENDERER], sanitizeFn, false);\n                                }\n                                break;\n                            case 0 /* I18nUpdateOpCode.Text */:\n                                const rText = lView[nodeIndex];\n                                rText !== null && updateTextNode(lView[RENDERER], rText, value);\n                                break;\n                            case 2 /* I18nUpdateOpCode.IcuSwitch */:\n                                applyIcuSwitchCase(tView, getTIcu(tView, nodeIndex), lView, value);\n                                break;\n                            case 3 /* I18nUpdateOpCode.IcuUpdate */:\n                                applyIcuUpdateCase(tView, getTIcu(tView, nodeIndex), bindingsStartIndex, lView);\n                                break;\n                        }\n                    }\n                }\n            }\n        }\n        else {\n            const opCode = updateOpCodes[i + 1];\n            if (opCode > 0 && (opCode & 3 /* I18nUpdateOpCode.MASK_OPCODE */) === 3 /* I18nUpdateOpCode.IcuUpdate */) {\n                // Special case for the `icuUpdateCase`. It could be that the mask did not match, but\n                // we still need to execute `icuUpdateCase` because the case has changed recently due to\n                // previous `icuSwitchCase` instruction. (`icuSwitchCase` and `icuUpdateCase` always come in\n                // pairs.)\n                const nodeIndex = (opCode >>> 2 /* I18nUpdateOpCode.SHIFT_REF */);\n                const tIcu = getTIcu(tView, nodeIndex);\n                const currentIndex = lView[tIcu.currentCaseLViewIndex];\n                if (currentIndex < 0) {\n                    applyIcuUpdateCase(tView, tIcu, bindingsStartIndex, lView);\n                }\n            }\n        }\n        i += skipCodes;\n    }\n}\n/**\n * Apply OpCodes associated with updating an existing ICU.\n *\n * @param tView Current `TView`\n * @param tIcu Current `TIcu`\n * @param bindingsStartIndex Location of the first `ɵɵi18nApply`\n * @param lView Current `LView`\n */\nfunction applyIcuUpdateCase(tView, tIcu, bindingsStartIndex, lView) {\n    ngDevMode && assertIndexInRange(lView, tIcu.currentCaseLViewIndex);\n    let activeCaseIndex = lView[tIcu.currentCaseLViewIndex];\n    if (activeCaseIndex !== null) {\n        let mask = changeMask;\n        if (activeCaseIndex < 0) {\n            // Clear the flag.\n            // Negative number means that the ICU was freshly created and we need to force the update.\n            activeCaseIndex = lView[tIcu.currentCaseLViewIndex] = ~activeCaseIndex;\n            // -1 is same as all bits on, which simulates creation since it marks all bits dirty\n            mask = -1;\n        }\n        applyUpdateOpCodes(tView, lView, tIcu.update[activeCaseIndex], bindingsStartIndex, mask);\n    }\n}\n/**\n * Apply OpCodes associated with switching a case on ICU.\n *\n * This involves tearing down existing case and than building up a new case.\n *\n * @param tView Current `TView`\n * @param tIcu Current `TIcu`\n * @param lView Current `LView`\n * @param value Value of the case to update to.\n */\nfunction applyIcuSwitchCase(tView, tIcu, lView, value) {\n    // Rebuild a new case for this ICU\n    const caseIndex = getCaseIndex(tIcu, value);\n    let activeCaseIndex = getCurrentICUCaseIndex(tIcu, lView);\n    if (activeCaseIndex !== caseIndex) {\n        applyIcuSwitchCaseRemove(tView, tIcu, lView);\n        lView[tIcu.currentCaseLViewIndex] = caseIndex === null ? null : ~caseIndex;\n        if (caseIndex !== null) {\n            // Add the nodes for the new case\n            const anchorRNode = lView[tIcu.anchorIdx];\n            if (anchorRNode) {\n                ngDevMode && assertDomNode(anchorRNode);\n                applyMutableOpCodes(tView, tIcu.create[caseIndex], lView, anchorRNode);\n            }\n        }\n    }\n}\n/**\n * Apply OpCodes associated with tearing ICU case.\n *\n * This involves tearing down existing case and than building up a new case.\n *\n * @param tView Current `TView`\n * @param tIcu Current `TIcu`\n * @param lView Current `LView`\n */\nfunction applyIcuSwitchCaseRemove(tView, tIcu, lView) {\n    let activeCaseIndex = getCurrentICUCaseIndex(tIcu, lView);\n    if (activeCaseIndex !== null) {\n        const removeCodes = tIcu.remove[activeCaseIndex];\n        for (let i = 0; i < removeCodes.length; i++) {\n            const nodeOrIcuIndex = removeCodes[i];\n            if (nodeOrIcuIndex > 0) {\n                // Positive numbers are `RNode`s.\n                const rNode = getNativeByIndex(nodeOrIcuIndex, lView);\n                rNode !== null && nativeRemoveNode(lView[RENDERER], rNode);\n            }\n            else {\n                // Negative numbers are ICUs\n                applyIcuSwitchCaseRemove(tView, getTIcu(tView, ~nodeOrIcuIndex), lView);\n            }\n        }\n    }\n}\n/**\n * Returns the index of the current case of an ICU expression depending on the main binding value\n *\n * @param icuExpression\n * @param bindingValue The value of the main binding used by this ICU expression\n */\nfunction getCaseIndex(icuExpression, bindingValue) {\n    let index = icuExpression.cases.indexOf(bindingValue);\n    if (index === -1) {\n        switch (icuExpression.type) {\n            case 1 /* IcuType.plural */: {\n                const resolvedCase = getPluralCase(bindingValue, getLocaleId());\n                index = icuExpression.cases.indexOf(resolvedCase);\n                if (index === -1 && resolvedCase !== 'other') {\n                    index = icuExpression.cases.indexOf('other');\n                }\n                break;\n            }\n            case 0 /* IcuType.select */: {\n                index = icuExpression.cases.indexOf('other');\n                break;\n            }\n        }\n    }\n    return index === -1 ? null : index;\n}\n\nfunction loadIcuContainerVisitor() {\n    const _stack = [];\n    let _index = -1;\n    let _lView;\n    let _removes;\n    /**\n     * Retrieves a set of root nodes from `TIcu.remove`. Used by `TNodeType.ICUContainer`\n     * to determine which root belong to the ICU.\n     *\n     * Example of usage.\n     * ```\n     * const nextRNode = icuContainerIteratorStart(tIcuContainerNode, lView);\n     * let rNode: RNode|null;\n     * while(rNode = nextRNode()) {\n     *   console.log(rNode);\n     * }\n     * ```\n     *\n     * @param tIcuContainerNode Current `TIcuContainerNode`\n     * @param lView `LView` where the `RNode`s should be looked up.\n     */\n    function icuContainerIteratorStart(tIcuContainerNode, lView) {\n        _lView = lView;\n        while (_stack.length)\n            _stack.pop();\n        ngDevMode && assertTNodeForLView(tIcuContainerNode, lView);\n        enterIcu(tIcuContainerNode.value, lView);\n        return icuContainerIteratorNext;\n    }\n    function enterIcu(tIcu, lView) {\n        _index = 0;\n        const currentCase = getCurrentICUCaseIndex(tIcu, lView);\n        if (currentCase !== null) {\n            ngDevMode && assertNumberInRange(currentCase, 0, tIcu.cases.length - 1);\n            _removes = tIcu.remove[currentCase];\n        }\n        else {\n            _removes = EMPTY_ARRAY;\n        }\n    }\n    function icuContainerIteratorNext() {\n        if (_index < _removes.length) {\n            const removeOpCode = _removes[_index++];\n            ngDevMode && assertNumber(removeOpCode, 'Expecting OpCode number');\n            if (removeOpCode > 0) {\n                const rNode = _lView[removeOpCode];\n                ngDevMode && assertDomNode(rNode);\n                return rNode;\n            }\n            else {\n                _stack.push(_index, _removes);\n                // ICUs are represented by negative indices\n                const tIcuIndex = ~removeOpCode;\n                const tIcu = _lView[TVIEW].data[tIcuIndex];\n                ngDevMode && assertTIcu(tIcu);\n                enterIcu(tIcu, _lView);\n                return icuContainerIteratorNext();\n            }\n        }\n        else {\n            if (_stack.length === 0) {\n                return null;\n            }\n            else {\n                _removes = _stack.pop();\n                _index = _stack.pop();\n                return icuContainerIteratorNext();\n            }\n        }\n    }\n    return icuContainerIteratorStart;\n}\n\n/**\n * Converts `I18nCreateOpCodes` array into a human readable format.\n *\n * This function is attached to the `I18nCreateOpCodes.debug` property if `ngDevMode` is enabled.\n * This function provides a human readable view of the opcodes. This is useful when debugging the\n * application as well as writing more readable tests.\n *\n * @param this `I18nCreateOpCodes` if attached as a method.\n * @param opcodes `I18nCreateOpCodes` if invoked as a function.\n */\nfunction i18nCreateOpCodesToString(opcodes) {\n    const createOpCodes = opcodes || (Array.isArray(this) ? this : []);\n    let lines = [];\n    for (let i = 0; i < createOpCodes.length; i++) {\n        const opCode = createOpCodes[i++];\n        const text = createOpCodes[i];\n        const isComment = (opCode & I18nCreateOpCode.COMMENT) === I18nCreateOpCode.COMMENT;\n        const appendNow = (opCode & I18nCreateOpCode.APPEND_EAGERLY) === I18nCreateOpCode.APPEND_EAGERLY;\n        const index = opCode >>> I18nCreateOpCode.SHIFT;\n        lines.push(`lView[${index}] = document.${isComment ? 'createComment' : 'createText'}(${JSON.stringify(text)});`);\n        if (appendNow) {\n            lines.push(`parent.appendChild(lView[${index}]);`);\n        }\n    }\n    return lines;\n}\n/**\n * Converts `I18nUpdateOpCodes` array into a human readable format.\n *\n * This function is attached to the `I18nUpdateOpCodes.debug` property if `ngDevMode` is enabled.\n * This function provides a human readable view of the opcodes. This is useful when debugging the\n * application as well as writing more readable tests.\n *\n * @param this `I18nUpdateOpCodes` if attached as a method.\n * @param opcodes `I18nUpdateOpCodes` if invoked as a function.\n */\nfunction i18nUpdateOpCodesToString(opcodes) {\n    const parser = new OpCodeParser(opcodes || (Array.isArray(this) ? this : []));\n    let lines = [];\n    function consumeOpCode(value) {\n        const ref = value >>> 2 /* I18nUpdateOpCode.SHIFT_REF */;\n        const opCode = value & 3 /* I18nUpdateOpCode.MASK_OPCODE */;\n        switch (opCode) {\n            case 0 /* I18nUpdateOpCode.Text */:\n                return `(lView[${ref}] as Text).textContent = $$$`;\n            case 1 /* I18nUpdateOpCode.Attr */:\n                const attrName = parser.consumeString();\n                const sanitizationFn = parser.consumeFunction();\n                const value = sanitizationFn ? `(${sanitizationFn})($$$)` : '$$$';\n                return `(lView[${ref}] as Element).setAttribute('${attrName}', ${value})`;\n            case 2 /* I18nUpdateOpCode.IcuSwitch */:\n                return `icuSwitchCase(${ref}, $$$)`;\n            case 3 /* I18nUpdateOpCode.IcuUpdate */:\n                return `icuUpdateCase(${ref})`;\n        }\n        throw new Error('unexpected OpCode');\n    }\n    while (parser.hasMore()) {\n        let mask = parser.consumeNumber();\n        let size = parser.consumeNumber();\n        const end = parser.i + size;\n        const statements = [];\n        let statement = '';\n        while (parser.i < end) {\n            let value = parser.consumeNumberOrString();\n            if (typeof value === 'string') {\n                statement += value;\n            }\n            else if (value < 0) {\n                // Negative numbers are ref indexes\n                // Here `i` refers to current binding index. It is to signify that the value is relative,\n                // rather than absolute.\n                statement += '${lView[i' + value + ']}';\n            }\n            else {\n                // Positive numbers are operations.\n                const opCodeText = consumeOpCode(value);\n                statements.push(opCodeText.replace('$$$', '`' + statement + '`') + ';');\n                statement = '';\n            }\n        }\n        lines.push(`if (mask & 0b${mask.toString(2)}) { ${statements.join(' ')} }`);\n    }\n    return lines;\n}\n/**\n * Converts `I18nCreateOpCodes` array into a human readable format.\n *\n * This function is attached to the `I18nCreateOpCodes.debug` if `ngDevMode` is enabled. This\n * function provides a human readable view of the opcodes. This is useful when debugging the\n * application as well as writing more readable tests.\n *\n * @param this `I18nCreateOpCodes` if attached as a method.\n * @param opcodes `I18nCreateOpCodes` if invoked as a function.\n */\nfunction icuCreateOpCodesToString(opcodes) {\n    const parser = new OpCodeParser(opcodes || (Array.isArray(this) ? this : []));\n    let lines = [];\n    function consumeOpCode(opCode) {\n        const parent = getParentFromIcuCreateOpCode(opCode);\n        const ref = getRefFromIcuCreateOpCode(opCode);\n        switch (getInstructionFromIcuCreateOpCode(opCode)) {\n            case 0 /* IcuCreateOpCode.AppendChild */:\n                return `(lView[${parent}] as Element).appendChild(lView[${lastRef}])`;\n            case 1 /* IcuCreateOpCode.Attr */:\n                return `(lView[${ref}] as Element).setAttribute(\"${parser.consumeString()}\", \"${parser.consumeString()}\")`;\n        }\n        throw new Error('Unexpected OpCode: ' + getInstructionFromIcuCreateOpCode(opCode));\n    }\n    let lastRef = -1;\n    while (parser.hasMore()) {\n        let value = parser.consumeNumberStringOrMarker();\n        if (value === ICU_MARKER) {\n            const text = parser.consumeString();\n            lastRef = parser.consumeNumber();\n            lines.push(`lView[${lastRef}] = document.createComment(\"${text}\")`);\n        }\n        else if (value === ELEMENT_MARKER) {\n            const text = parser.consumeString();\n            lastRef = parser.consumeNumber();\n            lines.push(`lView[${lastRef}] = document.createElement(\"${text}\")`);\n        }\n        else if (typeof value === 'string') {\n            lastRef = parser.consumeNumber();\n            lines.push(`lView[${lastRef}] = document.createTextNode(\"${value}\")`);\n        }\n        else if (typeof value === 'number') {\n            const line = consumeOpCode(value);\n            line && lines.push(line);\n        }\n        else {\n            throw new Error('Unexpected value');\n        }\n    }\n    return lines;\n}\n/**\n * Converts `I18nRemoveOpCodes` array into a human readable format.\n *\n * This function is attached to the `I18nRemoveOpCodes.debug` if `ngDevMode` is enabled. This\n * function provides a human readable view of the opcodes. This is useful when debugging the\n * application as well as writing more readable tests.\n *\n * @param this `I18nRemoveOpCodes` if attached as a method.\n * @param opcodes `I18nRemoveOpCodes` if invoked as a function.\n */\nfunction i18nRemoveOpCodesToString(opcodes) {\n    const removeCodes = opcodes || (Array.isArray(this) ? this : []);\n    let lines = [];\n    for (let i = 0; i < removeCodes.length; i++) {\n        const nodeOrIcuIndex = removeCodes[i];\n        if (nodeOrIcuIndex > 0) {\n            // Positive numbers are `RNode`s.\n            lines.push(`remove(lView[${nodeOrIcuIndex}])`);\n        }\n        else {\n            // Negative numbers are ICUs\n            lines.push(`removeNestedICU(${~nodeOrIcuIndex})`);\n        }\n    }\n    return lines;\n}\nclass OpCodeParser {\n    constructor(codes) {\n        this.i = 0;\n        this.codes = codes;\n    }\n    hasMore() {\n        return this.i < this.codes.length;\n    }\n    consumeNumber() {\n        let value = this.codes[this.i++];\n        assertNumber(value, 'expecting number in OpCode');\n        return value;\n    }\n    consumeString() {\n        let value = this.codes[this.i++];\n        assertString(value, 'expecting string in OpCode');\n        return value;\n    }\n    consumeFunction() {\n        let value = this.codes[this.i++];\n        if (value === null || typeof value === 'function') {\n            return value;\n        }\n        throw new Error('expecting function in OpCode');\n    }\n    consumeNumberOrString() {\n        let value = this.codes[this.i++];\n        if (typeof value === 'string') {\n            return value;\n        }\n        assertNumber(value, 'expecting number or string in OpCode');\n        return value;\n    }\n    consumeNumberStringOrMarker() {\n        let value = this.codes[this.i++];\n        if (typeof value === 'string' || typeof value === 'number' || value == ICU_MARKER ||\n            value == ELEMENT_MARKER) {\n            return value;\n        }\n        assertNumber(value, 'expecting number, string, ICU_MARKER or ELEMENT_MARKER in OpCode');\n        return value;\n    }\n}\n\nconst BINDING_REGEXP = /�(\\d+):?\\d*�/gi;\nconst ICU_REGEXP = /({\\s*�\\d+:?\\d*�\\s*,\\s*\\S{6}\\s*,[\\s\\S]*})/gi;\nconst NESTED_ICU = /�(\\d+)�/;\nconst ICU_BLOCK_REGEXP = /^\\s*(�\\d+:?\\d*�)\\s*,\\s*(select|plural)\\s*,/;\nconst MARKER = `�`;\nconst SUBTEMPLATE_REGEXP = /�\\/?\\*(\\d+:\\d+)�/gi;\nconst PH_REGEXP = /�(\\/?[#*]\\d+):?\\d*�/gi;\n/**\n * Angular Dart introduced &ngsp; as a placeholder for non-removable space, see:\n * https://github.com/dart-lang/angular/blob/0bb611387d29d65b5af7f9d2515ab571fd3fbee4/_tests/test/compiler/preserve_whitespace_test.dart#L25-L32\n * In Angular Dart &ngsp; is converted to the 0xE500 PUA (Private Use Areas) unicode character\n * and later on replaced by a space. We are re-implementing the same idea here, since translations\n * might contain this special character.\n */\nconst NGSP_UNICODE_REGEXP = /\\uE500/g;\nfunction replaceNgsp(value) {\n    return value.replace(NGSP_UNICODE_REGEXP, ' ');\n}\n/**\n * Patch a `debug` property getter on top of the existing object.\n *\n * NOTE: always call this method with `ngDevMode && attachDebugObject(...)`\n *\n * @param obj Object to patch\n * @param debugGetter Getter returning a value to patch\n */\nfunction attachDebugGetter(obj, debugGetter) {\n    if (ngDevMode) {\n        Object.defineProperty(obj, 'debug', { get: debugGetter, enumerable: false });\n    }\n    else {\n        throw new Error('This method should be guarded with `ngDevMode` so that it can be tree shaken in production!');\n    }\n}\n/**\n * Create dynamic nodes from i18n translation block.\n *\n * - Text nodes are created synchronously\n * - TNodes are linked into tree lazily\n *\n * @param tView Current `TView`\n * @parentTNodeIndex index to the parent TNode of this i18n block\n * @param lView Current `LView`\n * @param index Index of `ɵɵi18nStart` instruction.\n * @param message Message to translate.\n * @param subTemplateIndex Index into the sub template of message translation. (ie in case of\n *     `ngIf`) (-1 otherwise)\n */\nfunction i18nStartFirstCreatePass(tView, parentTNodeIndex, lView, index, message, subTemplateIndex) {\n    const rootTNode = getCurrentParentTNode();\n    const createOpCodes = [];\n    const updateOpCodes = [];\n    const existingTNodeStack = [[]];\n    if (ngDevMode) {\n        attachDebugGetter(createOpCodes, i18nCreateOpCodesToString);\n        attachDebugGetter(updateOpCodes, i18nUpdateOpCodesToString);\n    }\n    message = getTranslationForTemplate(message, subTemplateIndex);\n    const msgParts = replaceNgsp(message).split(PH_REGEXP);\n    for (let i = 0; i < msgParts.length; i++) {\n        let value = msgParts[i];\n        if ((i & 1) === 0) {\n            // Even indexes are text (including bindings & ICU expressions)\n            const parts = i18nParseTextIntoPartsAndICU(value);\n            for (let j = 0; j < parts.length; j++) {\n                let part = parts[j];\n                if ((j & 1) === 0) {\n                    // `j` is odd therefore `part` is string\n                    const text = part;\n                    ngDevMode && assertString(text, 'Parsed ICU part should be string');\n                    if (text !== '') {\n                        i18nStartFirstCreatePassProcessTextNode(tView, rootTNode, existingTNodeStack[0], createOpCodes, updateOpCodes, lView, text);\n                    }\n                }\n                else {\n                    // `j` is Even therefor `part` is an `ICUExpression`\n                    const icuExpression = part;\n                    // Verify that ICU expression has the right shape. Translations might contain invalid\n                    // constructions (while original messages were correct), so ICU parsing at runtime may\n                    // not succeed (thus `icuExpression` remains a string).\n                    // Note: we intentionally retain the error here by not using `ngDevMode`, because\n                    // the value can change based on the locale and users aren't guaranteed to hit\n                    // an invalid string while they're developing.\n                    if (typeof icuExpression !== 'object') {\n                        throw new Error(`Unable to parse ICU expression in \"${message}\" message.`);\n                    }\n                    const icuContainerTNode = createTNodeAndAddOpCode(tView, rootTNode, existingTNodeStack[0], lView, createOpCodes, ngDevMode ? `ICU ${index}:${icuExpression.mainBinding}` : '', true);\n                    const icuNodeIndex = icuContainerTNode.index;\n                    ngDevMode &&\n                        assertGreaterThanOrEqual(icuNodeIndex, HEADER_OFFSET, 'Index must be in absolute LView offset');\n                    icuStart(tView, lView, updateOpCodes, parentTNodeIndex, icuExpression, icuNodeIndex);\n                }\n            }\n        }\n        else {\n            // Odd indexes are placeholders (elements and sub-templates)\n            // At this point value is something like: '/#1:2' (originally coming from '�/#1:2�')\n            const isClosing = value.charCodeAt(0) === 47 /* CharCode.SLASH */;\n            const type = value.charCodeAt(isClosing ? 1 : 0);\n            ngDevMode && assertOneOf(type, 42 /* CharCode.STAR */, 35 /* CharCode.HASH */);\n            const index = HEADER_OFFSET + Number.parseInt(value.substring((isClosing ? 2 : 1)));\n            if (isClosing) {\n                existingTNodeStack.shift();\n                setCurrentTNode(getCurrentParentTNode(), false);\n            }\n            else {\n                const tNode = createTNodePlaceholder(tView, existingTNodeStack[0], index);\n                existingTNodeStack.unshift([]);\n                setCurrentTNode(tNode, true);\n            }\n        }\n    }\n    tView.data[index] = {\n        create: createOpCodes,\n        update: updateOpCodes,\n    };\n}\n/**\n * Allocate space in i18n Range add create OpCode instruction to create a text or comment node.\n *\n * @param tView Current `TView` needed to allocate space in i18n range.\n * @param rootTNode Root `TNode` of the i18n block. This node determines if the new TNode will be\n *     added as part of the `i18nStart` instruction or as part of the `TNode.insertBeforeIndex`.\n * @param existingTNodes internal state for `addTNodeAndUpdateInsertBeforeIndex`.\n * @param lView Current `LView` needed to allocate space in i18n range.\n * @param createOpCodes Array storing `I18nCreateOpCodes` where new opCodes will be added.\n * @param text Text to be added when the `Text` or `Comment` node will be created.\n * @param isICU true if a `Comment` node for ICU (instead of `Text`) node should be created.\n */\nfunction createTNodeAndAddOpCode(tView, rootTNode, existingTNodes, lView, createOpCodes, text, isICU) {\n    const i18nNodeIdx = allocExpando(tView, lView, 1, null);\n    let opCode = i18nNodeIdx << I18nCreateOpCode.SHIFT;\n    let parentTNode = getCurrentParentTNode();\n    if (rootTNode === parentTNode) {\n        // FIXME(misko): A null `parentTNode` should represent when we fall of the `LView` boundary.\n        // (there is no parent), but in some circumstances (because we are inconsistent about how we set\n        // `previousOrParentTNode`) it could point to `rootTNode` So this is a work around.\n        parentTNode = null;\n    }\n    if (parentTNode === null) {\n        // If we don't have a parent that means that we can eagerly add nodes.\n        // If we have a parent than these nodes can't be added now (as the parent has not been created\n        // yet) and instead the `parentTNode` is responsible for adding it. See\n        // `TNode.insertBeforeIndex`\n        opCode |= I18nCreateOpCode.APPEND_EAGERLY;\n    }\n    if (isICU) {\n        opCode |= I18nCreateOpCode.COMMENT;\n        ensureIcuContainerVisitorLoaded(loadIcuContainerVisitor);\n    }\n    createOpCodes.push(opCode, text === null ? '' : text);\n    // We store `{{?}}` so that when looking at debug `TNodeType.template` we can see where the\n    // bindings are.\n    const tNode = createTNodeAtIndex(tView, i18nNodeIdx, isICU ? 32 /* TNodeType.Icu */ : 1 /* TNodeType.Text */, text === null ? (ngDevMode ? '{{?}}' : '') : text, null);\n    addTNodeAndUpdateInsertBeforeIndex(existingTNodes, tNode);\n    const tNodeIdx = tNode.index;\n    setCurrentTNode(tNode, false /* Text nodes are self closing */);\n    if (parentTNode !== null && rootTNode !== parentTNode) {\n        // We are a child of deeper node (rather than a direct child of `i18nStart` instruction.)\n        // We have to make sure to add ourselves to the parent.\n        setTNodeInsertBeforeIndex(parentTNode, tNodeIdx);\n    }\n    return tNode;\n}\n/**\n * Processes text node in i18n block.\n *\n * Text nodes can have:\n * - Create instruction in `createOpCodes` for creating the text node.\n * - Allocate spec for text node in i18n range of `LView`\n * - If contains binding:\n *    - bindings => allocate space in i18n range of `LView` to store the binding value.\n *    - populate `updateOpCodes` with update instructions.\n *\n * @param tView Current `TView`\n * @param rootTNode Root `TNode` of the i18n block. This node determines if the new TNode will\n *     be added as part of the `i18nStart` instruction or as part of the\n *     `TNode.insertBeforeIndex`.\n * @param existingTNodes internal state for `addTNodeAndUpdateInsertBeforeIndex`.\n * @param createOpCodes Location where the creation OpCodes will be stored.\n * @param lView Current `LView`\n * @param text The translated text (which may contain binding)\n */\nfunction i18nStartFirstCreatePassProcessTextNode(tView, rootTNode, existingTNodes, createOpCodes, updateOpCodes, lView, text) {\n    const hasBinding = text.match(BINDING_REGEXP);\n    const tNode = createTNodeAndAddOpCode(tView, rootTNode, existingTNodes, lView, createOpCodes, hasBinding ? null : text, false);\n    if (hasBinding) {\n        generateBindingUpdateOpCodes(updateOpCodes, text, tNode.index, null, 0, null);\n    }\n}\n/**\n * See `i18nAttributes` above.\n */\nfunction i18nAttributesFirstPass(tView, index, values) {\n    const previousElement = getCurrentTNode();\n    const previousElementIndex = previousElement.index;\n    const updateOpCodes = [];\n    if (ngDevMode) {\n        attachDebugGetter(updateOpCodes, i18nUpdateOpCodesToString);\n    }\n    if (tView.firstCreatePass && tView.data[index] === null) {\n        for (let i = 0; i < values.length; i += 2) {\n            const attrName = values[i];\n            const message = values[i + 1];\n            if (message !== '') {\n                // Check if attribute value contains an ICU and throw an error if that's the case.\n                // ICUs in element attributes are not supported.\n                // Note: we intentionally retain the error here by not using `ngDevMode`, because\n                // the `value` can change based on the locale and users aren't guaranteed to hit\n                // an invalid string while they're developing.\n                if (ICU_REGEXP.test(message)) {\n                    throw new Error(`ICU expressions are not supported in attributes. Message: \"${message}\".`);\n                }\n                // i18n attributes that hit this code path are guaranteed to have bindings, because\n                // the compiler treats static i18n attributes as regular attribute bindings.\n                // Since this may not be the first i18n attribute on this element we need to pass in how\n                // many previous bindings there have already been.\n                generateBindingUpdateOpCodes(updateOpCodes, message, previousElementIndex, attrName, countBindings(updateOpCodes), null);\n            }\n        }\n        tView.data[index] = updateOpCodes;\n    }\n}\n/**\n * Generate the OpCodes to update the bindings of a string.\n *\n * @param updateOpCodes Place where the update opcodes will be stored.\n * @param str The string containing the bindings.\n * @param destinationNode Index of the destination node which will receive the binding.\n * @param attrName Name of the attribute, if the string belongs to an attribute.\n * @param sanitizeFn Sanitization function used to sanitize the string after update, if necessary.\n * @param bindingStart The lView index of the next expression that can be bound via an opCode.\n * @returns The mask value for these bindings\n */\nfunction generateBindingUpdateOpCodes(updateOpCodes, str, destinationNode, attrName, bindingStart, sanitizeFn) {\n    ngDevMode &&\n        assertGreaterThanOrEqual(destinationNode, HEADER_OFFSET, 'Index must be in absolute LView offset');\n    const maskIndex = updateOpCodes.length; // Location of mask\n    const sizeIndex = maskIndex + 1; // location of size for skipping\n    updateOpCodes.push(null, null); // Alloc space for mask and size\n    const startIndex = maskIndex + 2; // location of first allocation.\n    if (ngDevMode) {\n        attachDebugGetter(updateOpCodes, i18nUpdateOpCodesToString);\n    }\n    const textParts = str.split(BINDING_REGEXP);\n    let mask = 0;\n    for (let j = 0; j < textParts.length; j++) {\n        const textValue = textParts[j];\n        if (j & 1) {\n            // Odd indexes are bindings\n            const bindingIndex = bindingStart + parseInt(textValue, 10);\n            updateOpCodes.push(-1 - bindingIndex);\n            mask = mask | toMaskBit(bindingIndex);\n        }\n        else if (textValue !== '') {\n            // Even indexes are text\n            updateOpCodes.push(textValue);\n        }\n    }\n    updateOpCodes.push(destinationNode << 2 /* I18nUpdateOpCode.SHIFT_REF */ |\n        (attrName ? 1 /* I18nUpdateOpCode.Attr */ : 0 /* I18nUpdateOpCode.Text */));\n    if (attrName) {\n        updateOpCodes.push(attrName, sanitizeFn);\n    }\n    updateOpCodes[maskIndex] = mask;\n    updateOpCodes[sizeIndex] = updateOpCodes.length - startIndex;\n    return mask;\n}\n/**\n * Count the number of bindings in the given `opCodes`.\n *\n * It could be possible to speed this up, by passing the number of bindings found back from\n * `generateBindingUpdateOpCodes()` to `i18nAttributesFirstPass()` but this would then require more\n * complexity in the code and/or transient objects to be created.\n *\n * Since this function is only called once when the template is instantiated, is trivial in the\n * first instance (since `opCodes` will be an empty array), and it is not common for elements to\n * contain multiple i18n bound attributes, it seems like this is a reasonable compromise.\n */\nfunction countBindings(opCodes) {\n    let count = 0;\n    for (let i = 0; i < opCodes.length; i++) {\n        const opCode = opCodes[i];\n        // Bindings are negative numbers.\n        if (typeof opCode === 'number' && opCode < 0) {\n            count++;\n        }\n    }\n    return count;\n}\n/**\n * Convert binding index to mask bit.\n *\n * Each index represents a single bit on the bit-mask. Because bit-mask only has 32 bits, we make\n * the 32nd bit share all masks for all bindings higher than 32. Since it is extremely rare to\n * have more than 32 bindings this will be hit very rarely. The downside of hitting this corner\n * case is that we will execute binding code more often than necessary. (penalty of performance)\n */\nfunction toMaskBit(bindingIndex) {\n    return 1 << Math.min(bindingIndex, 31);\n}\nfunction isRootTemplateMessage(subTemplateIndex) {\n    return subTemplateIndex === -1;\n}\n/**\n * Removes everything inside the sub-templates of a message.\n */\nfunction removeInnerTemplateTranslation(message) {\n    let match;\n    let res = '';\n    let index = 0;\n    let inTemplate = false;\n    let tagMatched;\n    while ((match = SUBTEMPLATE_REGEXP.exec(message)) !== null) {\n        if (!inTemplate) {\n            res += message.substring(index, match.index + match[0].length);\n            tagMatched = match[1];\n            inTemplate = true;\n        }\n        else {\n            if (match[0] === `${MARKER}/*${tagMatched}${MARKER}`) {\n                index = match.index;\n                inTemplate = false;\n            }\n        }\n    }\n    ngDevMode &&\n        assertEqual(inTemplate, false, `Tag mismatch: unable to find the end of the sub-template in the translation \"${message}\"`);\n    res += message.slice(index);\n    return res;\n}\n/**\n * Extracts a part of a message and removes the rest.\n *\n * This method is used for extracting a part of the message associated with a template. A\n * translated message can span multiple templates.\n *\n * Example:\n * ```\n * <div i18n>Translate <span *ngIf>me</span>!</div>\n * ```\n *\n * @param message The message to crop\n * @param subTemplateIndex Index of the sub-template to extract. If undefined it returns the\n * external template and removes all sub-templates.\n */\nfunction getTranslationForTemplate(message, subTemplateIndex) {\n    if (isRootTemplateMessage(subTemplateIndex)) {\n        // We want the root template message, ignore all sub-templates\n        return removeInnerTemplateTranslation(message);\n    }\n    else {\n        // We want a specific sub-template\n        const start = message.indexOf(`:${subTemplateIndex}${MARKER}`) + 2 + subTemplateIndex.toString().length;\n        const end = message.search(new RegExp(`${MARKER}\\\\/\\\\*\\\\d+:${subTemplateIndex}${MARKER}`));\n        return removeInnerTemplateTranslation(message.substring(start, end));\n    }\n}\n/**\n * Generate the OpCodes for ICU expressions.\n *\n * @param icuExpression\n * @param index Index where the anchor is stored and an optional `TIcuContainerNode`\n *   - `lView[anchorIdx]` points to a `Comment` node representing the anchor for the ICU.\n *   - `tView.data[anchorIdx]` points to the `TIcuContainerNode` if ICU is root (`null` otherwise)\n */\nfunction icuStart(tView, lView, updateOpCodes, parentIdx, icuExpression, anchorIdx) {\n    ngDevMode && assertDefined(icuExpression, 'ICU expression must be defined');\n    let bindingMask = 0;\n    const tIcu = {\n        type: icuExpression.type,\n        currentCaseLViewIndex: allocExpando(tView, lView, 1, null),\n        anchorIdx,\n        cases: [],\n        create: [],\n        remove: [],\n        update: []\n    };\n    addUpdateIcuSwitch(updateOpCodes, icuExpression, anchorIdx);\n    setTIcu(tView, anchorIdx, tIcu);\n    const values = icuExpression.values;\n    for (let i = 0; i < values.length; i++) {\n        // Each value is an array of strings & other ICU expressions\n        const valueArr = values[i];\n        const nestedIcus = [];\n        for (let j = 0; j < valueArr.length; j++) {\n            const value = valueArr[j];\n            if (typeof value !== 'string') {\n                // It is an nested ICU expression\n                const icuIndex = nestedIcus.push(value) - 1;\n                // Replace nested ICU expression by a comment node\n                valueArr[j] = `<!--�${icuIndex}�-->`;\n            }\n        }\n        bindingMask = parseIcuCase(tView, tIcu, lView, updateOpCodes, parentIdx, icuExpression.cases[i], valueArr.join(''), nestedIcus) |\n            bindingMask;\n    }\n    if (bindingMask) {\n        addUpdateIcuUpdate(updateOpCodes, bindingMask, anchorIdx);\n    }\n}\n/**\n * Parses text containing an ICU expression and produces a JSON object for it.\n * Original code from closure library, modified for Angular.\n *\n * @param pattern Text containing an ICU expression that needs to be parsed.\n *\n */\nfunction parseICUBlock(pattern) {\n    const cases = [];\n    const values = [];\n    let icuType = 1 /* IcuType.plural */;\n    let mainBinding = 0;\n    pattern = pattern.replace(ICU_BLOCK_REGEXP, function (str, binding, type) {\n        if (type === 'select') {\n            icuType = 0 /* IcuType.select */;\n        }\n        else {\n            icuType = 1 /* IcuType.plural */;\n        }\n        mainBinding = parseInt(binding.slice(1), 10);\n        return '';\n    });\n    const parts = i18nParseTextIntoPartsAndICU(pattern);\n    // Looking for (key block)+ sequence. One of the keys has to be \"other\".\n    for (let pos = 0; pos < parts.length;) {\n        let key = parts[pos++].trim();\n        if (icuType === 1 /* IcuType.plural */) {\n            // Key can be \"=x\", we just want \"x\"\n            key = key.replace(/\\s*(?:=)?(\\w+)\\s*/, '$1');\n        }\n        if (key.length) {\n            cases.push(key);\n        }\n        const blocks = i18nParseTextIntoPartsAndICU(parts[pos++]);\n        if (cases.length > values.length) {\n            values.push(blocks);\n        }\n    }\n    // TODO(ocombe): support ICU expressions in attributes, see #21615\n    return { type: icuType, mainBinding: mainBinding, cases, values };\n}\n/**\n * Breaks pattern into strings and top level {...} blocks.\n * Can be used to break a message into text and ICU expressions, or to break an ICU expression\n * into keys and cases. Original code from closure library, modified for Angular.\n *\n * @param pattern (sub)Pattern to be broken.\n * @returns An `Array<string|IcuExpression>` where:\n *   - odd positions: `string` => text between ICU expressions\n *   - even positions: `ICUExpression` => ICU expression parsed into `ICUExpression` record.\n */\nfunction i18nParseTextIntoPartsAndICU(pattern) {\n    if (!pattern) {\n        return [];\n    }\n    let prevPos = 0;\n    const braceStack = [];\n    const results = [];\n    const braces = /[{}]/g;\n    // lastIndex doesn't get set to 0 so we have to.\n    braces.lastIndex = 0;\n    let match;\n    while (match = braces.exec(pattern)) {\n        const pos = match.index;\n        if (match[0] == '}') {\n            braceStack.pop();\n            if (braceStack.length == 0) {\n                // End of the block.\n                const block = pattern.substring(prevPos, pos);\n                if (ICU_BLOCK_REGEXP.test(block)) {\n                    results.push(parseICUBlock(block));\n                }\n                else {\n                    results.push(block);\n                }\n                prevPos = pos + 1;\n            }\n        }\n        else {\n            if (braceStack.length == 0) {\n                const substring = pattern.substring(prevPos, pos);\n                results.push(substring);\n                prevPos = pos + 1;\n            }\n            braceStack.push('{');\n        }\n    }\n    const substring = pattern.substring(prevPos);\n    results.push(substring);\n    return results;\n}\n/**\n * Parses a node, its children and its siblings, and generates the mutate & update OpCodes.\n *\n */\nfunction parseIcuCase(tView, tIcu, lView, updateOpCodes, parentIdx, caseName, unsafeCaseHtml, nestedIcus) {\n    const create = [];\n    const remove = [];\n    const update = [];\n    if (ngDevMode) {\n        attachDebugGetter(create, icuCreateOpCodesToString);\n        attachDebugGetter(remove, i18nRemoveOpCodesToString);\n        attachDebugGetter(update, i18nUpdateOpCodesToString);\n    }\n    tIcu.cases.push(caseName);\n    tIcu.create.push(create);\n    tIcu.remove.push(remove);\n    tIcu.update.push(update);\n    const inertBodyHelper = getInertBodyHelper(getDocument());\n    const inertBodyElement = inertBodyHelper.getInertBodyElement(unsafeCaseHtml);\n    ngDevMode && assertDefined(inertBodyElement, 'Unable to generate inert body element');\n    const inertRootNode = getTemplateContent(inertBodyElement) || inertBodyElement;\n    if (inertRootNode) {\n        return walkIcuTree(tView, tIcu, lView, updateOpCodes, create, remove, update, inertRootNode, parentIdx, nestedIcus, 0);\n    }\n    else {\n        return 0;\n    }\n}\nfunction walkIcuTree(tView, tIcu, lView, sharedUpdateOpCodes, create, remove, update, parentNode, parentIdx, nestedIcus, depth) {\n    let bindingMask = 0;\n    let currentNode = parentNode.firstChild;\n    while (currentNode) {\n        const newIndex = allocExpando(tView, lView, 1, null);\n        switch (currentNode.nodeType) {\n            case Node.ELEMENT_NODE:\n                const element = currentNode;\n                const tagName = element.tagName.toLowerCase();\n                if (VALID_ELEMENTS.hasOwnProperty(tagName)) {\n                    addCreateNodeAndAppend(create, ELEMENT_MARKER, tagName, parentIdx, newIndex);\n                    tView.data[newIndex] = tagName;\n                    const elAttrs = element.attributes;\n                    for (let i = 0; i < elAttrs.length; i++) {\n                        const attr = elAttrs.item(i);\n                        const lowerAttrName = attr.name.toLowerCase();\n                        const hasBinding = !!attr.value.match(BINDING_REGEXP);\n                        // we assume the input string is safe, unless it's using a binding\n                        if (hasBinding) {\n                            if (VALID_ATTRS.hasOwnProperty(lowerAttrName)) {\n                                if (URI_ATTRS[lowerAttrName]) {\n                                    generateBindingUpdateOpCodes(update, attr.value, newIndex, attr.name, 0, _sanitizeUrl);\n                                }\n                                else {\n                                    generateBindingUpdateOpCodes(update, attr.value, newIndex, attr.name, 0, null);\n                                }\n                            }\n                            else {\n                                ngDevMode &&\n                                    console.warn(`WARNING: ignoring unsafe attribute value ` +\n                                        `${lowerAttrName} on element ${tagName} ` +\n                                        `(see ${XSS_SECURITY_URL})`);\n                            }\n                        }\n                        else {\n                            addCreateAttribute(create, newIndex, attr);\n                        }\n                    }\n                    // Parse the children of this node (if any)\n                    bindingMask = walkIcuTree(tView, tIcu, lView, sharedUpdateOpCodes, create, remove, update, currentNode, newIndex, nestedIcus, depth + 1) |\n                        bindingMask;\n                    addRemoveNode(remove, newIndex, depth);\n                }\n                break;\n            case Node.TEXT_NODE:\n                const value = currentNode.textContent || '';\n                const hasBinding = value.match(BINDING_REGEXP);\n                addCreateNodeAndAppend(create, null, hasBinding ? '' : value, parentIdx, newIndex);\n                addRemoveNode(remove, newIndex, depth);\n                if (hasBinding) {\n                    bindingMask =\n                        generateBindingUpdateOpCodes(update, value, newIndex, null, 0, null) | bindingMask;\n                }\n                break;\n            case Node.COMMENT_NODE:\n                // Check if the comment node is a placeholder for a nested ICU\n                const isNestedIcu = NESTED_ICU.exec(currentNode.textContent || '');\n                if (isNestedIcu) {\n                    const nestedIcuIndex = parseInt(isNestedIcu[1], 10);\n                    const icuExpression = nestedIcus[nestedIcuIndex];\n                    // Create the comment node that will anchor the ICU expression\n                    addCreateNodeAndAppend(create, ICU_MARKER, ngDevMode ? `nested ICU ${nestedIcuIndex}` : '', parentIdx, newIndex);\n                    icuStart(tView, lView, sharedUpdateOpCodes, parentIdx, icuExpression, newIndex);\n                    addRemoveNestedIcu(remove, newIndex, depth);\n                }\n                break;\n        }\n        currentNode = currentNode.nextSibling;\n    }\n    return bindingMask;\n}\nfunction addRemoveNode(remove, index, depth) {\n    if (depth === 0) {\n        remove.push(index);\n    }\n}\nfunction addRemoveNestedIcu(remove, index, depth) {\n    if (depth === 0) {\n        remove.push(~index); // remove ICU at `index`\n        remove.push(index); // remove ICU comment at `index`\n    }\n}\nfunction addUpdateIcuSwitch(update, icuExpression, index) {\n    update.push(toMaskBit(icuExpression.mainBinding), 2, -1 - icuExpression.mainBinding, index << 2 /* I18nUpdateOpCode.SHIFT_REF */ | 2 /* I18nUpdateOpCode.IcuSwitch */);\n}\nfunction addUpdateIcuUpdate(update, bindingMask, index) {\n    update.push(bindingMask, 1, index << 2 /* I18nUpdateOpCode.SHIFT_REF */ | 3 /* I18nUpdateOpCode.IcuUpdate */);\n}\nfunction addCreateNodeAndAppend(create, marker, text, appendToParentIdx, createAtIdx) {\n    if (marker !== null) {\n        create.push(marker);\n    }\n    create.push(text, createAtIdx, icuCreateOpCode(0 /* IcuCreateOpCode.AppendChild */, appendToParentIdx, createAtIdx));\n}\nfunction addCreateAttribute(create, newIndex, attr) {\n    create.push(newIndex << 1 /* IcuCreateOpCode.SHIFT_REF */ | 1 /* IcuCreateOpCode.Attr */, attr.name, attr.value);\n}\n\n// i18nPostprocess consts\nconst ROOT_TEMPLATE_ID = 0;\nconst PP_MULTI_VALUE_PLACEHOLDERS_REGEXP = /\\[(�.+?�?)\\]/;\nconst PP_PLACEHOLDERS_REGEXP = /\\[(�.+?�?)\\]|(�\\/?\\*\\d+:\\d+�)/g;\nconst PP_ICU_VARS_REGEXP = /({\\s*)(VAR_(PLURAL|SELECT)(_\\d+)?)(\\s*,)/g;\nconst PP_ICU_PLACEHOLDERS_REGEXP = /{([A-Z0-9_]+)}/g;\nconst PP_ICUS_REGEXP = /�I18N_EXP_(ICU(_\\d+)?)�/g;\nconst PP_CLOSE_TEMPLATE_REGEXP = /\\/\\*/;\nconst PP_TEMPLATE_ID_REGEXP = /\\d+\\:(\\d+)/;\n/**\n * Handles message string post-processing for internationalization.\n *\n * Handles message string post-processing by transforming it from intermediate\n * format (that might contain some markers that we need to replace) to the final\n * form, consumable by i18nStart instruction. Post processing steps include:\n *\n * 1. Resolve all multi-value cases (like [�*1:1��#2:1�|�#4:1�|�5�])\n * 2. Replace all ICU vars (like \"VAR_PLURAL\")\n * 3. Replace all placeholders used inside ICUs in a form of {PLACEHOLDER}\n * 4. Replace all ICU references with corresponding values (like �ICU_EXP_ICU_1�)\n *    in case multiple ICUs have the same placeholder name\n *\n * @param message Raw translation string for post processing\n * @param replacements Set of replacements that should be applied\n *\n * @returns Transformed string that can be consumed by i18nStart instruction\n *\n * @codeGenApi\n */\nfunction i18nPostprocess(message, replacements = {}) {\n    /**\n     * Step 1: resolve all multi-value placeholders like [�#5�|�*1:1��#2:1�|�#4:1�]\n     *\n     * Note: due to the way we process nested templates (BFS), multi-value placeholders are typically\n     * grouped by templates, for example: [�#5�|�#6�|�#1:1�|�#3:2�] where �#5� and �#6� belong to root\n     * template, �#1:1� belong to nested template with index 1 and �#1:2� - nested template with index\n     * 3. However in real templates the order might be different: i.e. �#1:1� and/or �#3:2� may go in\n     * front of �#6�. The post processing step restores the right order by keeping track of the\n     * template id stack and looks for placeholders that belong to the currently active template.\n     */\n    let result = message;\n    if (PP_MULTI_VALUE_PLACEHOLDERS_REGEXP.test(message)) {\n        const matches = {};\n        const templateIdsStack = [ROOT_TEMPLATE_ID];\n        result = result.replace(PP_PLACEHOLDERS_REGEXP, (m, phs, tmpl) => {\n            const content = phs || tmpl;\n            const placeholders = matches[content] || [];\n            if (!placeholders.length) {\n                content.split('|').forEach((placeholder) => {\n                    const match = placeholder.match(PP_TEMPLATE_ID_REGEXP);\n                    const templateId = match ? parseInt(match[1], 10) : ROOT_TEMPLATE_ID;\n                    const isCloseTemplateTag = PP_CLOSE_TEMPLATE_REGEXP.test(placeholder);\n                    placeholders.push([templateId, isCloseTemplateTag, placeholder]);\n                });\n                matches[content] = placeholders;\n            }\n            if (!placeholders.length) {\n                throw new Error(`i18n postprocess: unmatched placeholder - ${content}`);\n            }\n            const currentTemplateId = templateIdsStack[templateIdsStack.length - 1];\n            let idx = 0;\n            // find placeholder index that matches current template id\n            for (let i = 0; i < placeholders.length; i++) {\n                if (placeholders[i][0] === currentTemplateId) {\n                    idx = i;\n                    break;\n                }\n            }\n            // update template id stack based on the current tag extracted\n            const [templateId, isCloseTemplateTag, placeholder] = placeholders[idx];\n            if (isCloseTemplateTag) {\n                templateIdsStack.pop();\n            }\n            else if (currentTemplateId !== templateId) {\n                templateIdsStack.push(templateId);\n            }\n            // remove processed tag from the list\n            placeholders.splice(idx, 1);\n            return placeholder;\n        });\n    }\n    // return current result if no replacements specified\n    if (!Object.keys(replacements).length) {\n        return result;\n    }\n    /**\n     * Step 2: replace all ICU vars (like \"VAR_PLURAL\")\n     */\n    result = result.replace(PP_ICU_VARS_REGEXP, (match, start, key, _type, _idx, end) => {\n        return replacements.hasOwnProperty(key) ? `${start}${replacements[key]}${end}` : match;\n    });\n    /**\n     * Step 3: replace all placeholders used inside ICUs in a form of {PLACEHOLDER}\n     */\n    result = result.replace(PP_ICU_PLACEHOLDERS_REGEXP, (match, key) => {\n        return replacements.hasOwnProperty(key) ? replacements[key] : match;\n    });\n    /**\n     * Step 4: replace all ICU references with corresponding values (like �ICU_EXP_ICU_1�) in case\n     * multiple ICUs have the same placeholder name\n     */\n    result = result.replace(PP_ICUS_REGEXP, (match, key) => {\n        if (replacements.hasOwnProperty(key)) {\n            const list = replacements[key];\n            if (!list.length) {\n                throw new Error(`i18n postprocess: unmatched ICU - ${match} with key: ${key}`);\n            }\n            return list.shift();\n        }\n        return match;\n    });\n    return result;\n}\n\n/**\n * Marks a block of text as translatable.\n *\n * The instructions `i18nStart` and `i18nEnd` mark the translation block in the template.\n * The translation `message` is the value which is locale specific. The translation string may\n * contain placeholders which associate inner elements and sub-templates within the translation.\n *\n * The translation `message` placeholders are:\n * - `�{index}(:{block})�`: *Binding Placeholder*: Marks a location where an expression will be\n *   interpolated into. The placeholder `index` points to the expression binding index. An optional\n *   `block` that matches the sub-template in which it was declared.\n * - `�#{index}(:{block})�`/`�/#{index}(:{block})�`: *Element Placeholder*:  Marks the beginning\n *   and end of DOM element that were embedded in the original translation block. The placeholder\n *   `index` points to the element index in the template instructions set. An optional `block` that\n *   matches the sub-template in which it was declared.\n * - `�*{index}:{block}�`/`�/*{index}:{block}�`: *Sub-template Placeholder*: Sub-templates must be\n *   split up and translated separately in each angular template function. The `index` points to the\n *   `template` instruction index. A `block` that matches the sub-template in which it was declared.\n *\n * @param index A unique index of the translation in the static block.\n * @param messageIndex An index of the translation message from the `def.consts` array.\n * @param subTemplateIndex Optional sub-template index in the `message`.\n *\n * @codeGenApi\n */\nfunction ɵɵi18nStart(index, messageIndex, subTemplateIndex = -1) {\n    const tView = getTView();\n    const lView = getLView();\n    const adjustedIndex = HEADER_OFFSET + index;\n    ngDevMode && assertDefined(tView, `tView should be defined`);\n    const message = getConstant(tView.consts, messageIndex);\n    const parentTNode = getCurrentParentTNode();\n    if (tView.firstCreatePass) {\n        i18nStartFirstCreatePass(tView, parentTNode === null ? 0 : parentTNode.index, lView, adjustedIndex, message, subTemplateIndex);\n    }\n    const tI18n = tView.data[adjustedIndex];\n    const sameViewParentTNode = parentTNode === lView[T_HOST] ? null : parentTNode;\n    const parentRNode = getClosestRElement(tView, sameViewParentTNode, lView);\n    // If `parentTNode` is an `ElementContainer` than it has `<!--ng-container--->`.\n    // When we do inserts we have to make sure to insert in front of `<!--ng-container--->`.\n    const insertInFrontOf = parentTNode && (parentTNode.type & 8 /* TNodeType.ElementContainer */) ?\n        lView[parentTNode.index] :\n        null;\n    applyCreateOpCodes(lView, tI18n.create, parentRNode, insertInFrontOf);\n    setInI18nBlock(true);\n}\n/**\n * Translates a translation block marked by `i18nStart` and `i18nEnd`. It inserts the text/ICU nodes\n * into the render tree, moves the placeholder nodes and removes the deleted nodes.\n *\n * @codeGenApi\n */\nfunction ɵɵi18nEnd() {\n    setInI18nBlock(false);\n}\n/**\n *\n * Use this instruction to create a translation block that doesn't contain any placeholder.\n * It calls both {@link i18nStart} and {@link i18nEnd} in one instruction.\n *\n * The translation `message` is the value which is locale specific. The translation string may\n * contain placeholders which associate inner elements and sub-templates within the translation.\n *\n * The translation `message` placeholders are:\n * - `�{index}(:{block})�`: *Binding Placeholder*: Marks a location where an expression will be\n *   interpolated into. The placeholder `index` points to the expression binding index. An optional\n *   `block` that matches the sub-template in which it was declared.\n * - `�#{index}(:{block})�`/`�/#{index}(:{block})�`: *Element Placeholder*:  Marks the beginning\n *   and end of DOM element that were embedded in the original translation block. The placeholder\n *   `index` points to the element index in the template instructions set. An optional `block` that\n *   matches the sub-template in which it was declared.\n * - `�*{index}:{block}�`/`�/*{index}:{block}�`: *Sub-template Placeholder*: Sub-templates must be\n *   split up and translated separately in each angular template function. The `index` points to the\n *   `template` instruction index. A `block` that matches the sub-template in which it was declared.\n *\n * @param index A unique index of the translation in the static block.\n * @param messageIndex An index of the translation message from the `def.consts` array.\n * @param subTemplateIndex Optional sub-template index in the `message`.\n *\n * @codeGenApi\n */\nfunction ɵɵi18n(index, messageIndex, subTemplateIndex) {\n    ɵɵi18nStart(index, messageIndex, subTemplateIndex);\n    ɵɵi18nEnd();\n}\n/**\n * Marks a list of attributes as translatable.\n *\n * @param index A unique index in the static block\n * @param values\n *\n * @codeGenApi\n */\nfunction ɵɵi18nAttributes(index, attrsIndex) {\n    const tView = getTView();\n    ngDevMode && assertDefined(tView, `tView should be defined`);\n    const attrs = getConstant(tView.consts, attrsIndex);\n    i18nAttributesFirstPass(tView, index + HEADER_OFFSET, attrs);\n}\n/**\n * Stores the values of the bindings during each update cycle in order to determine if we need to\n * update the translated nodes.\n *\n * @param value The binding's value\n * @returns This function returns itself so that it may be chained\n * (e.g. `i18nExp(ctx.name)(ctx.title)`)\n *\n * @codeGenApi\n */\nfunction ɵɵi18nExp(value) {\n    const lView = getLView();\n    setMaskBit(bindingUpdated(lView, nextBindingIndex(), value));\n    return ɵɵi18nExp;\n}\n/**\n * Updates a translation block or an i18n attribute when the bindings have changed.\n *\n * @param index Index of either {@link i18nStart} (translation block) or {@link i18nAttributes}\n * (i18n attribute) on which it should update the content.\n *\n * @codeGenApi\n */\nfunction ɵɵi18nApply(index) {\n    applyI18n(getTView(), getLView(), index + HEADER_OFFSET);\n}\n/**\n * Handles message string post-processing for internationalization.\n *\n * Handles message string post-processing by transforming it from intermediate\n * format (that might contain some markers that we need to replace) to the final\n * form, consumable by i18nStart instruction. Post processing steps include:\n *\n * 1. Resolve all multi-value cases (like [�*1:1��#2:1�|�#4:1�|�5�])\n * 2. Replace all ICU vars (like \"VAR_PLURAL\")\n * 3. Replace all placeholders used inside ICUs in a form of {PLACEHOLDER}\n * 4. Replace all ICU references with corresponding values (like �ICU_EXP_ICU_1�)\n *    in case multiple ICUs have the same placeholder name\n *\n * @param message Raw translation string for post processing\n * @param replacements Set of replacements that should be applied\n *\n * @returns Transformed string that can be consumed by i18nStart instruction\n *\n * @codeGenApi\n */\nfunction ɵɵi18nPostprocess(message, replacements = {}) {\n    return i18nPostprocess(message, replacements);\n}\n\n/*\n * This file re-exports all symbols contained in this directory.\n *\n * Why is this file not `index.ts`?\n *\n * There seems to be an inconsistent path resolution of an `index.ts` file\n * when only the parent directory is referenced. This could be due to the\n * node module resolution configuration differing from rollup and/or typescript.\n *\n * With commit\n * https://github.com/angular/angular/commit/d5e3f2c64bd13ce83e7c70788b7fc514ca4a9918\n * the `instructions.ts` file was moved to `instructions/instructions.ts` and an\n * `index.ts` file was used to re-export everything. Having had file names that were\n * importing from `instructions' directly (not the from the sub file or the `index.ts`\n * file) caused strange CI issues. `index.ts` had to be renamed to `all.ts` for this\n * to work.\n *\n * Jira Issue = FW-1184\n */\n\n/**\n * Resolves the providers which are defined in the DirectiveDef.\n *\n * When inserting the tokens and the factories in their respective arrays, we can assume that\n * this method is called first for the component (if any), and then for other directives on the same\n * node.\n * As a consequence,the providers are always processed in that order:\n * 1) The view providers of the component\n * 2) The providers of the component\n * 3) The providers of the other directives\n * This matches the structure of the injectables arrays of a view (for each node).\n * So the tokens and the factories can be pushed at the end of the arrays, except\n * in one case for multi providers.\n *\n * @param def the directive definition\n * @param providers: Array of `providers`.\n * @param viewProviders: Array of `viewProviders`.\n */\nfunction providersResolver(def, providers, viewProviders) {\n    const tView = getTView();\n    if (tView.firstCreatePass) {\n        const isComponent = isComponentDef(def);\n        // The list of view providers is processed first, and the flags are updated\n        resolveProvider(viewProviders, tView.data, tView.blueprint, isComponent, true);\n        // Then, the list of providers is processed, and the flags are updated\n        resolveProvider(providers, tView.data, tView.blueprint, isComponent, false);\n    }\n}\n/**\n * Resolves a provider and publishes it to the DI system.\n */\nfunction resolveProvider(provider, tInjectables, lInjectablesBlueprint, isComponent, isViewProvider) {\n    provider = resolveForwardRef(provider);\n    if (Array.isArray(provider)) {\n        // Recursively call `resolveProvider`\n        // Recursion is OK in this case because this code will not be in hot-path once we implement\n        // cloning of the initial state.\n        for (let i = 0; i < provider.length; i++) {\n            resolveProvider(provider[i], tInjectables, lInjectablesBlueprint, isComponent, isViewProvider);\n        }\n    }\n    else {\n        const tView = getTView();\n        const lView = getLView();\n        let token = isTypeProvider(provider) ? provider : resolveForwardRef(provider.provide);\n        let providerFactory = providerToFactory(provider);\n        const tNode = getCurrentTNode();\n        const beginIndex = tNode.providerIndexes & 1048575 /* TNodeProviderIndexes.ProvidersStartIndexMask */;\n        const endIndex = tNode.directiveStart;\n        const cptViewProvidersCount = tNode.providerIndexes >> 20 /* TNodeProviderIndexes.CptViewProvidersCountShift */;\n        if (isTypeProvider(provider) || !provider.multi) {\n            // Single provider case: the factory is created and pushed immediately\n            const factory = new NodeInjectorFactory(providerFactory, isViewProvider, ɵɵdirectiveInject);\n            const existingFactoryIndex = indexOf(token, tInjectables, isViewProvider ? beginIndex : beginIndex + cptViewProvidersCount, endIndex);\n            if (existingFactoryIndex === -1) {\n                diPublicInInjector(getOrCreateNodeInjectorForNode(tNode, lView), tView, token);\n                registerDestroyHooksIfSupported(tView, provider, tInjectables.length);\n                tInjectables.push(token);\n                tNode.directiveStart++;\n                tNode.directiveEnd++;\n                if (isViewProvider) {\n                    tNode.providerIndexes += 1048576 /* TNodeProviderIndexes.CptViewProvidersCountShifter */;\n                }\n                lInjectablesBlueprint.push(factory);\n                lView.push(factory);\n            }\n            else {\n                lInjectablesBlueprint[existingFactoryIndex] = factory;\n                lView[existingFactoryIndex] = factory;\n            }\n        }\n        else {\n            // Multi provider case:\n            // We create a multi factory which is going to aggregate all the values.\n            // Since the output of such a factory depends on content or view injection,\n            // we create two of them, which are linked together.\n            //\n            // The first one (for view providers) is always in the first block of the injectables array,\n            // and the second one (for providers) is always in the second block.\n            // This is important because view providers have higher priority. When a multi token\n            // is being looked up, the view providers should be found first.\n            // Note that it is not possible to have a multi factory in the third block (directive block).\n            //\n            // The algorithm to process multi providers is as follows:\n            // 1) If the multi provider comes from the `viewProviders` of the component:\n            //   a) If the special view providers factory doesn't exist, it is created and pushed.\n            //   b) Else, the multi provider is added to the existing multi factory.\n            // 2) If the multi provider comes from the `providers` of the component or of another\n            // directive:\n            //   a) If the multi factory doesn't exist, it is created and provider pushed into it.\n            //      It is also linked to the multi factory for view providers, if it exists.\n            //   b) Else, the multi provider is added to the existing multi factory.\n            const existingProvidersFactoryIndex = indexOf(token, tInjectables, beginIndex + cptViewProvidersCount, endIndex);\n            const existingViewProvidersFactoryIndex = indexOf(token, tInjectables, beginIndex, beginIndex + cptViewProvidersCount);\n            const doesProvidersFactoryExist = existingProvidersFactoryIndex >= 0 &&\n                lInjectablesBlueprint[existingProvidersFactoryIndex];\n            const doesViewProvidersFactoryExist = existingViewProvidersFactoryIndex >= 0 &&\n                lInjectablesBlueprint[existingViewProvidersFactoryIndex];\n            if (isViewProvider && !doesViewProvidersFactoryExist ||\n                !isViewProvider && !doesProvidersFactoryExist) {\n                // Cases 1.a and 2.a\n                diPublicInInjector(getOrCreateNodeInjectorForNode(tNode, lView), tView, token);\n                const factory = multiFactory(isViewProvider ? multiViewProvidersFactoryResolver : multiProvidersFactoryResolver, lInjectablesBlueprint.length, isViewProvider, isComponent, providerFactory);\n                if (!isViewProvider && doesViewProvidersFactoryExist) {\n                    lInjectablesBlueprint[existingViewProvidersFactoryIndex].providerFactory = factory;\n                }\n                registerDestroyHooksIfSupported(tView, provider, tInjectables.length, 0);\n                tInjectables.push(token);\n                tNode.directiveStart++;\n                tNode.directiveEnd++;\n                if (isViewProvider) {\n                    tNode.providerIndexes += 1048576 /* TNodeProviderIndexes.CptViewProvidersCountShifter */;\n                }\n                lInjectablesBlueprint.push(factory);\n                lView.push(factory);\n            }\n            else {\n                // Cases 1.b and 2.b\n                const indexInFactory = multiFactoryAdd(lInjectablesBlueprint[isViewProvider ? existingViewProvidersFactoryIndex :\n                    existingProvidersFactoryIndex], providerFactory, !isViewProvider && isComponent);\n                registerDestroyHooksIfSupported(tView, provider, existingProvidersFactoryIndex > -1 ? existingProvidersFactoryIndex :\n                    existingViewProvidersFactoryIndex, indexInFactory);\n            }\n            if (!isViewProvider && isComponent && doesViewProvidersFactoryExist) {\n                lInjectablesBlueprint[existingViewProvidersFactoryIndex].componentProviders++;\n            }\n        }\n    }\n}\n/**\n * Registers the `ngOnDestroy` hook of a provider, if the provider supports destroy hooks.\n * @param tView `TView` in which to register the hook.\n * @param provider Provider whose hook should be registered.\n * @param contextIndex Index under which to find the context for the hook when it's being invoked.\n * @param indexInFactory Only required for `multi` providers. Index of the provider in the multi\n * provider factory.\n */\nfunction registerDestroyHooksIfSupported(tView, provider, contextIndex, indexInFactory) {\n    const providerIsTypeProvider = isTypeProvider(provider);\n    const providerIsClassProvider = isClassProvider(provider);\n    if (providerIsTypeProvider || providerIsClassProvider) {\n        // Resolve forward references as `useClass` can hold a forward reference.\n        const classToken = providerIsClassProvider ? resolveForwardRef(provider.useClass) : provider;\n        const prototype = classToken.prototype;\n        const ngOnDestroy = prototype.ngOnDestroy;\n        if (ngOnDestroy) {\n            const hooks = tView.destroyHooks || (tView.destroyHooks = []);\n            if (!providerIsTypeProvider && provider.multi) {\n                ngDevMode &&\n                    assertDefined(indexInFactory, 'indexInFactory when registering multi factory destroy hook');\n                const existingCallbacksIndex = hooks.indexOf(contextIndex);\n                if (existingCallbacksIndex === -1) {\n                    hooks.push(contextIndex, [indexInFactory, ngOnDestroy]);\n                }\n                else {\n                    hooks[existingCallbacksIndex + 1].push(indexInFactory, ngOnDestroy);\n                }\n            }\n            else {\n                hooks.push(contextIndex, ngOnDestroy);\n            }\n        }\n    }\n}\n/**\n * Add a factory in a multi factory.\n * @returns Index at which the factory was inserted.\n */\nfunction multiFactoryAdd(multiFactory, factory, isComponentProvider) {\n    if (isComponentProvider) {\n        multiFactory.componentProviders++;\n    }\n    return multiFactory.multi.push(factory) - 1;\n}\n/**\n * Returns the index of item in the array, but only in the begin to end range.\n */\nfunction indexOf(item, arr, begin, end) {\n    for (let i = begin; i < end; i++) {\n        if (arr[i] === item)\n            return i;\n    }\n    return -1;\n}\n/**\n * Use this with `multi` `providers`.\n */\nfunction multiProvidersFactoryResolver(_, tData, lData, tNode) {\n    return multiResolve(this.multi, []);\n}\n/**\n * Use this with `multi` `viewProviders`.\n *\n * This factory knows how to concatenate itself with the existing `multi` `providers`.\n */\nfunction multiViewProvidersFactoryResolver(_, tData, lView, tNode) {\n    const factories = this.multi;\n    let result;\n    if (this.providerFactory) {\n        const componentCount = this.providerFactory.componentProviders;\n        const multiProviders = getNodeInjectable(lView, lView[TVIEW], this.providerFactory.index, tNode);\n        // Copy the section of the array which contains `multi` `providers` from the component\n        result = multiProviders.slice(0, componentCount);\n        // Insert the `viewProvider` instances.\n        multiResolve(factories, result);\n        // Copy the section of the array which contains `multi` `providers` from other directives\n        for (let i = componentCount; i < multiProviders.length; i++) {\n            result.push(multiProviders[i]);\n        }\n    }\n    else {\n        result = [];\n        // Insert the `viewProvider` instances.\n        multiResolve(factories, result);\n    }\n    return result;\n}\n/**\n * Maps an array of factories into an array of values.\n */\nfunction multiResolve(factories, result) {\n    for (let i = 0; i < factories.length; i++) {\n        const factory = factories[i];\n        result.push(factory());\n    }\n    return result;\n}\n/**\n * Creates a multi factory.\n */\nfunction multiFactory(factoryFn, index, isViewProvider, isComponent, f) {\n    const factory = new NodeInjectorFactory(factoryFn, isViewProvider, ɵɵdirectiveInject);\n    factory.multi = [];\n    factory.index = index;\n    factory.componentProviders = 0;\n    multiFactoryAdd(factory, f, isComponent && !isViewProvider);\n    return factory;\n}\n\n/**\n * This feature resolves the providers of a directive (or component),\n * and publish them into the DI system, making it visible to others for injection.\n *\n * For example:\n * ```ts\n * class ComponentWithProviders {\n *   constructor(private greeter: GreeterDE) {}\n *\n *   static ɵcmp = defineComponent({\n *     type: ComponentWithProviders,\n *     selectors: [['component-with-providers']],\n *    factory: () => new ComponentWithProviders(directiveInject(GreeterDE as any)),\n *    decls: 1,\n *    vars: 1,\n *    template: function(fs: RenderFlags, ctx: ComponentWithProviders) {\n *      if (fs & RenderFlags.Create) {\n *        ɵɵtext(0);\n *      }\n *      if (fs & RenderFlags.Update) {\n *        ɵɵtextInterpolate(ctx.greeter.greet());\n *      }\n *    },\n *    features: [ɵɵProvidersFeature([GreeterDE])]\n *  });\n * }\n * ```\n *\n * @param definition\n *\n * @codeGenApi\n */\nfunction ɵɵProvidersFeature(providers, viewProviders = []) {\n    return (definition) => {\n        definition.providersResolver =\n            (def, processProvidersFn) => {\n                return providersResolver(def, //\n                processProvidersFn ? processProvidersFn(providers) : providers, //\n                viewProviders);\n            };\n    };\n}\n\n/**\n * Represents an instance of an `NgModule` created by an `NgModuleFactory`.\n * Provides access to the `NgModule` instance and related objects.\n *\n * @publicApi\n */\nclass NgModuleRef$1 {\n}\n/**\n * @publicApi\n *\n * @deprecated\n * This class was mostly used as a part of ViewEngine-based JIT API and is no longer needed in Ivy\n * JIT mode. See [JIT API changes due to ViewEngine deprecation](guide/deprecations#jit-api-changes)\n * for additional context. Angular provides APIs that accept NgModule classes directly (such as\n * [PlatformRef.bootstrapModule](api/core/PlatformRef#bootstrapModule) and\n * [createNgModule](api/core/createNgModule)), consider switching to those APIs instead of\n * using factory-based ones.\n */\nclass NgModuleFactory$1 {\n}\n\n/**\n * Returns a new NgModuleRef instance based on the NgModule class and parent injector provided.\n *\n * @param ngModule NgModule class.\n * @param parentInjector Optional injector instance to use as a parent for the module injector. If\n *     not provided, `NullInjector` will be used instead.\n * @returns NgModuleRef that represents an NgModule instance.\n *\n * @publicApi\n */\nfunction createNgModule(ngModule, parentInjector) {\n    return new NgModuleRef(ngModule, parentInjector ?? null);\n}\n/**\n * The `createNgModule` function alias for backwards-compatibility.\n * Please avoid using it directly and use `createNgModule` instead.\n *\n * @deprecated Use `createNgModule` instead.\n */\nconst createNgModuleRef = createNgModule;\nclass NgModuleRef extends NgModuleRef$1 {\n    constructor(ngModuleType, _parent) {\n        super();\n        this._parent = _parent;\n        // tslint:disable-next-line:require-internal-with-underscore\n        this._bootstrapComponents = [];\n        this.destroyCbs = [];\n        // When bootstrapping a module we have a dependency graph that looks like this:\n        // ApplicationRef -> ComponentFactoryResolver -> NgModuleRef. The problem is that if the\n        // module being resolved tries to inject the ComponentFactoryResolver, it'll create a\n        // circular dependency which will result in a runtime error, because the injector doesn't\n        // exist yet. We work around the issue by creating the ComponentFactoryResolver ourselves\n        // and providing it, rather than letting the injector resolve it.\n        this.componentFactoryResolver = new ComponentFactoryResolver(this);\n        const ngModuleDef = getNgModuleDef(ngModuleType);\n        ngDevMode &&\n            assertDefined(ngModuleDef, `NgModule '${stringify(ngModuleType)}' is not a subtype of 'NgModuleType'.`);\n        this._bootstrapComponents = maybeUnwrapFn(ngModuleDef.bootstrap);\n        this._r3Injector = createInjectorWithoutInjectorInstances(ngModuleType, _parent, [\n            { provide: NgModuleRef$1, useValue: this }, {\n                provide: ComponentFactoryResolver$1,\n                useValue: this.componentFactoryResolver\n            }\n        ], stringify(ngModuleType), new Set(['environment']));\n        // We need to resolve the injector types separately from the injector creation, because\n        // the module might be trying to use this ref in its constructor for DI which will cause a\n        // circular error that will eventually error out, because the injector isn't created yet.\n        this._r3Injector.resolveInjectorInitializers();\n        this.instance = this._r3Injector.get(ngModuleType);\n    }\n    get injector() {\n        return this._r3Injector;\n    }\n    destroy() {\n        ngDevMode && assertDefined(this.destroyCbs, 'NgModule already destroyed');\n        const injector = this._r3Injector;\n        !injector.destroyed && injector.destroy();\n        this.destroyCbs.forEach(fn => fn());\n        this.destroyCbs = null;\n    }\n    onDestroy(callback) {\n        ngDevMode && assertDefined(this.destroyCbs, 'NgModule already destroyed');\n        this.destroyCbs.push(callback);\n    }\n}\nclass NgModuleFactory extends NgModuleFactory$1 {\n    constructor(moduleType) {\n        super();\n        this.moduleType = moduleType;\n    }\n    create(parentInjector) {\n        return new NgModuleRef(this.moduleType, parentInjector);\n    }\n}\nclass EnvironmentNgModuleRefAdapter extends NgModuleRef$1 {\n    constructor(providers, parent, source) {\n        super();\n        this.componentFactoryResolver = new ComponentFactoryResolver(this);\n        this.instance = null;\n        const injector = new R3Injector([\n            ...providers,\n            { provide: NgModuleRef$1, useValue: this },\n            { provide: ComponentFactoryResolver$1, useValue: this.componentFactoryResolver },\n        ], parent || getNullInjector(), source, new Set(['environment']));\n        this.injector = injector;\n        injector.resolveInjectorInitializers();\n    }\n    destroy() {\n        this.injector.destroy();\n    }\n    onDestroy(callback) {\n        this.injector.onDestroy(callback);\n    }\n}\n/**\n * Create a new environment injector.\n *\n * Learn more about environment injectors in\n * [this guide](guide/standalone-components#environment-injectors).\n *\n * @param providers An array of providers.\n * @param parent A parent environment injector.\n * @param debugName An optional name for this injector instance, which will be used in error\n *     messages.\n *\n * @publicApi\n */\nfunction createEnvironmentInjector(providers, parent, debugName = null) {\n    const adapter = new EnvironmentNgModuleRefAdapter(providers, parent, debugName);\n    return adapter.injector;\n}\n\n/**\n * A service used by the framework to create instances of standalone injectors. Those injectors are\n * created on demand in case of dynamic component instantiation and contain ambient providers\n * collected from the imports graph rooted at a given standalone component.\n */\nclass StandaloneService {\n    constructor(_injector) {\n        this._injector = _injector;\n        this.cachedInjectors = new Map();\n    }\n    getOrCreateStandaloneInjector(componentDef) {\n        if (!componentDef.standalone) {\n            return null;\n        }\n        if (!this.cachedInjectors.has(componentDef.id)) {\n            const providers = internalImportProvidersFrom(false, componentDef.type);\n            const standaloneInjector = providers.length > 0 ?\n                createEnvironmentInjector([providers], this._injector, `Standalone[${componentDef.type.name}]`) :\n                null;\n            this.cachedInjectors.set(componentDef.id, standaloneInjector);\n        }\n        return this.cachedInjectors.get(componentDef.id);\n    }\n    ngOnDestroy() {\n        try {\n            for (const injector of this.cachedInjectors.values()) {\n                if (injector !== null) {\n                    injector.destroy();\n                }\n            }\n        }\n        finally {\n            this.cachedInjectors.clear();\n        }\n    }\n}\n/** @nocollapse */\nStandaloneService.ɵprov = ɵɵdefineInjectable({\n    token: StandaloneService,\n    providedIn: 'environment',\n    factory: () => new StandaloneService(ɵɵinject(EnvironmentInjector)),\n});\n/**\n * A feature that acts as a setup code for the {@link StandaloneService}.\n *\n * The most important responsibility of this feature is to expose the \"getStandaloneInjector\"\n * function (an entry points to a standalone injector creation) on a component definition object. We\n * go through the features infrastructure to make sure that the standalone injector creation logic\n * is tree-shakable and not included in applications that don't use standalone components.\n *\n * @codeGenApi\n */\nfunction ɵɵStandaloneFeature(definition) {\n    definition.getStandaloneInjector = (parentInjector) => {\n        return parentInjector.get(StandaloneService).getOrCreateStandaloneInjector(definition);\n    };\n}\n\n/**\n * Retrieves the component instance associated with a given DOM element.\n *\n * @usageNotes\n * Given the following DOM structure:\n *\n * ```html\n * <app-root>\n *   <div>\n *     <child-comp></child-comp>\n *   </div>\n * </app-root>\n * ```\n *\n * Calling `getComponent` on `<child-comp>` will return the instance of `ChildComponent`\n * associated with this DOM element.\n *\n * Calling the function on `<app-root>` will return the `MyApp` instance.\n *\n *\n * @param element DOM element from which the component should be retrieved.\n * @returns Component instance associated with the element or `null` if there\n *    is no component associated with it.\n *\n * @publicApi\n * @globalApi ng\n */\nfunction getComponent(element) {\n    ngDevMode && assertDomElement(element);\n    const context = getLContext(element);\n    if (context === null)\n        return null;\n    if (context.component === undefined) {\n        const lView = context.lView;\n        if (lView === null) {\n            return null;\n        }\n        context.component = getComponentAtNodeIndex(context.nodeIndex, lView);\n    }\n    return context.component;\n}\n/**\n * If inside an embedded view (e.g. `*ngIf` or `*ngFor`), retrieves the context of the embedded\n * view that the element is part of. Otherwise retrieves the instance of the component whose view\n * owns the element (in this case, the result is the same as calling `getOwningComponent`).\n *\n * @param element Element for which to get the surrounding component instance.\n * @returns Instance of the component that is around the element or null if the element isn't\n *    inside any component.\n *\n * @publicApi\n * @globalApi ng\n */\nfunction getContext(element) {\n    assertDomElement(element);\n    const context = getLContext(element);\n    const lView = context ? context.lView : null;\n    return lView === null ? null : lView[CONTEXT];\n}\n/**\n * Retrieves the component instance whose view contains the DOM element.\n *\n * For example, if `<child-comp>` is used in the template of `<app-comp>`\n * (i.e. a `ViewChild` of `<app-comp>`), calling `getOwningComponent` on `<child-comp>`\n * would return `<app-comp>`.\n *\n * @param elementOrDir DOM element, component or directive instance\n *    for which to retrieve the root components.\n * @returns Component instance whose view owns the DOM element or null if the element is not\n *    part of a component view.\n *\n * @publicApi\n * @globalApi ng\n */\nfunction getOwningComponent(elementOrDir) {\n    const context = getLContext(elementOrDir);\n    let lView = context ? context.lView : null;\n    if (lView === null)\n        return null;\n    let parent;\n    while (lView[TVIEW].type === 2 /* TViewType.Embedded */ && (parent = getLViewParent(lView))) {\n        lView = parent;\n    }\n    return lView[FLAGS] & 256 /* LViewFlags.IsRoot */ ? null : lView[CONTEXT];\n}\n/**\n * Retrieves all root components associated with a DOM element, directive or component instance.\n * Root components are those which have been bootstrapped by Angular.\n *\n * @param elementOrDir DOM element, component or directive instance\n *    for which to retrieve the root components.\n * @returns Root components associated with the target object.\n *\n * @publicApi\n * @globalApi ng\n */\nfunction getRootComponents(elementOrDir) {\n    const lView = readPatchedLView(elementOrDir);\n    return lView !== null ? [getRootContext(lView)] : [];\n}\n/**\n * Retrieves an `Injector` associated with an element, component or directive instance.\n *\n * @param elementOrDir DOM element, component or directive instance for which to\n *    retrieve the injector.\n * @returns Injector associated with the element, component or directive instance.\n *\n * @publicApi\n * @globalApi ng\n */\nfunction getInjector(elementOrDir) {\n    const context = getLContext(elementOrDir);\n    const lView = context ? context.lView : null;\n    if (lView === null)\n        return Injector.NULL;\n    const tNode = lView[TVIEW].data[context.nodeIndex];\n    return new NodeInjector(tNode, lView);\n}\n/**\n * Retrieve a set of injection tokens at a given DOM node.\n *\n * @param element Element for which the injection tokens should be retrieved.\n */\nfunction getInjectionTokens(element) {\n    const context = getLContext(element);\n    const lView = context ? context.lView : null;\n    if (lView === null)\n        return [];\n    const tView = lView[TVIEW];\n    const tNode = tView.data[context.nodeIndex];\n    const providerTokens = [];\n    const startIndex = tNode.providerIndexes & 1048575 /* TNodeProviderIndexes.ProvidersStartIndexMask */;\n    const endIndex = tNode.directiveEnd;\n    for (let i = startIndex; i < endIndex; i++) {\n        let value = tView.data[i];\n        if (isDirectiveDefHack(value)) {\n            // The fact that we sometimes store Type and sometimes DirectiveDef in this location is a\n            // design flaw.  We should always store same type so that we can be monomorphic. The issue\n            // is that for Components/Directives we store the def instead the type. The correct behavior\n            // is that we should always be storing injectable type in this location.\n            value = value.type;\n        }\n        providerTokens.push(value);\n    }\n    return providerTokens;\n}\n/**\n * Retrieves directive instances associated with a given DOM node. Does not include\n * component instances.\n *\n * @usageNotes\n * Given the following DOM structure:\n *\n * ```html\n * <app-root>\n *   <button my-button></button>\n *   <my-comp></my-comp>\n * </app-root>\n * ```\n *\n * Calling `getDirectives` on `<button>` will return an array with an instance of the `MyButton`\n * directive that is associated with the DOM node.\n *\n * Calling `getDirectives` on `<my-comp>` will return an empty array.\n *\n * @param node DOM node for which to get the directives.\n * @returns Array of directives associated with the node.\n *\n * @publicApi\n * @globalApi ng\n */\nfunction getDirectives(node) {\n    // Skip text nodes because we can't have directives associated with them.\n    if (node instanceof Text) {\n        return [];\n    }\n    const context = getLContext(node);\n    const lView = context ? context.lView : null;\n    if (lView === null) {\n        return [];\n    }\n    const tView = lView[TVIEW];\n    const nodeIndex = context.nodeIndex;\n    if (!tView?.data[nodeIndex]) {\n        return [];\n    }\n    if (context.directives === undefined) {\n        context.directives = getDirectivesAtNodeIndex(nodeIndex, lView);\n    }\n    // The `directives` in this case are a named array called `LComponentView`. Clone the\n    // result so we don't expose an internal data structure in the user's console.\n    return context.directives === null ? [] : [...context.directives];\n}\n/**\n * Returns the debug (partial) metadata for a particular directive or component instance.\n * The function accepts an instance of a directive or component and returns the corresponding\n * metadata.\n *\n * @param directiveOrComponentInstance Instance of a directive or component\n * @returns metadata of the passed directive or component\n *\n * @publicApi\n * @globalApi ng\n */\nfunction getDirectiveMetadata$1(directiveOrComponentInstance) {\n    const { constructor } = directiveOrComponentInstance;\n    if (!constructor) {\n        throw new Error('Unable to find the instance constructor');\n    }\n    // In case a component inherits from a directive, we may have component and directive metadata\n    // To ensure we don't get the metadata of the directive, we want to call `getComponentDef` first.\n    const componentDef = getComponentDef(constructor);\n    if (componentDef) {\n        return {\n            inputs: componentDef.inputs,\n            outputs: componentDef.outputs,\n            encapsulation: componentDef.encapsulation,\n            changeDetection: componentDef.onPush ? ChangeDetectionStrategy.OnPush :\n                ChangeDetectionStrategy.Default\n        };\n    }\n    const directiveDef = getDirectiveDef(constructor);\n    if (directiveDef) {\n        return { inputs: directiveDef.inputs, outputs: directiveDef.outputs };\n    }\n    return null;\n}\n/**\n * Retrieve map of local references.\n *\n * The references are retrieved as a map of local reference name to element or directive instance.\n *\n * @param target DOM element, component or directive instance for which to retrieve\n *    the local references.\n */\nfunction getLocalRefs(target) {\n    const context = getLContext(target);\n    if (context === null)\n        return {};\n    if (context.localRefs === undefined) {\n        const lView = context.lView;\n        if (lView === null) {\n            return {};\n        }\n        context.localRefs = discoverLocalRefs(lView, context.nodeIndex);\n    }\n    return context.localRefs || {};\n}\n/**\n * Retrieves the host element of a component or directive instance.\n * The host element is the DOM element that matched the selector of the directive.\n *\n * @param componentOrDirective Component or directive instance for which the host\n *     element should be retrieved.\n * @returns Host element of the target.\n *\n * @publicApi\n * @globalApi ng\n */\nfunction getHostElement(componentOrDirective) {\n    return getLContext(componentOrDirective).native;\n}\n/**\n * Retrieves the rendered text for a given component.\n *\n * This function retrieves the host element of a component and\n * and then returns the `textContent` for that element. This implies\n * that the text returned will include re-projected content of\n * the component as well.\n *\n * @param component The component to return the content text for.\n */\nfunction getRenderedText(component) {\n    const hostElement = getHostElement(component);\n    return hostElement.textContent || '';\n}\n/**\n * Retrieves a list of event listeners associated with a DOM element. The list does include host\n * listeners, but it does not include event listeners defined outside of the Angular context\n * (e.g. through `addEventListener`).\n *\n * @usageNotes\n * Given the following DOM structure:\n *\n * ```html\n * <app-root>\n *   <div (click)=\"doSomething()\"></div>\n * </app-root>\n * ```\n *\n * Calling `getListeners` on `<div>` will return an object that looks as follows:\n *\n * ```ts\n * {\n *   name: 'click',\n *   element: <div>,\n *   callback: () => doSomething(),\n *   useCapture: false\n * }\n * ```\n *\n * @param element Element for which the DOM listeners should be retrieved.\n * @returns Array of event listeners on the DOM element.\n *\n * @publicApi\n * @globalApi ng\n */\nfunction getListeners(element) {\n    ngDevMode && assertDomElement(element);\n    const lContext = getLContext(element);\n    const lView = lContext === null ? null : lContext.lView;\n    if (lView === null)\n        return [];\n    const tView = lView[TVIEW];\n    const lCleanup = lView[CLEANUP];\n    const tCleanup = tView.cleanup;\n    const listeners = [];\n    if (tCleanup && lCleanup) {\n        for (let i = 0; i < tCleanup.length;) {\n            const firstParam = tCleanup[i++];\n            const secondParam = tCleanup[i++];\n            if (typeof firstParam === 'string') {\n                const name = firstParam;\n                const listenerElement = unwrapRNode(lView[secondParam]);\n                const callback = lCleanup[tCleanup[i++]];\n                const useCaptureOrIndx = tCleanup[i++];\n                // if useCaptureOrIndx is boolean then report it as is.\n                // if useCaptureOrIndx is positive number then it in unsubscribe method\n                // if useCaptureOrIndx is negative number then it is a Subscription\n                const type = (typeof useCaptureOrIndx === 'boolean' || useCaptureOrIndx >= 0) ? 'dom' : 'output';\n                const useCapture = typeof useCaptureOrIndx === 'boolean' ? useCaptureOrIndx : false;\n                if (element == listenerElement) {\n                    listeners.push({ element, name, callback, useCapture, type });\n                }\n            }\n        }\n    }\n    listeners.sort(sortListeners);\n    return listeners;\n}\nfunction sortListeners(a, b) {\n    if (a.name == b.name)\n        return 0;\n    return a.name < b.name ? -1 : 1;\n}\n/**\n * This function should not exist because it is megamorphic and only mostly correct.\n *\n * See call site for more info.\n */\nfunction isDirectiveDefHack(obj) {\n    return obj.type !== undefined && obj.declaredInputs !== undefined &&\n        obj.findHostDirectiveDefs !== undefined;\n}\n/**\n * Retrieve the component `LView` from component/element.\n *\n * NOTE: `LView` is a private and should not be leaked outside.\n *       Don't export this method to `ng.*` on window.\n *\n * @param target DOM element or component instance for which to retrieve the LView.\n */\nfunction getComponentLView(target) {\n    const lContext = getLContext(target);\n    const nodeIndx = lContext.nodeIndex;\n    const lView = lContext.lView;\n    ngDevMode && assertLView(lView);\n    const componentLView = lView[nodeIndx];\n    ngDevMode && assertLView(componentLView);\n    return componentLView;\n}\n/** Asserts that a value is a DOM Element. */\nfunction assertDomElement(value) {\n    if (typeof Element !== 'undefined' && !(value instanceof Element)) {\n        throw new Error('Expecting instance of DOM Element');\n    }\n}\n\n/**\n * Adds decorator, constructor, and property metadata to a given type via static metadata fields\n * on the type.\n *\n * These metadata fields can later be read with Angular's `ReflectionCapabilities` API.\n *\n * Calls to `setClassMetadata` can be guarded by ngDevMode, resulting in the metadata assignments\n * being tree-shaken away during production builds.\n */\nfunction setClassMetadata(type, decorators, ctorParameters, propDecorators) {\n    return noSideEffects(() => {\n        const clazz = type;\n        if (decorators !== null) {\n            if (clazz.hasOwnProperty('decorators') && clazz.decorators !== undefined) {\n                clazz.decorators.push(...decorators);\n            }\n            else {\n                clazz.decorators = decorators;\n            }\n        }\n        if (ctorParameters !== null) {\n            // Rather than merging, clobber the existing parameters. If other projects exist which\n            // use tsickle-style annotations and reflect over them in the same way, this could\n            // cause issues, but that is vanishingly unlikely.\n            clazz.ctorParameters = ctorParameters;\n        }\n        if (propDecorators !== null) {\n            // The property decorator objects are merged as it is possible different fields have\n            // different decorator types. Decorators on individual fields are not merged, as it's\n            // also incredibly unlikely that a field will be decorated both with an Angular\n            // decorator and a non-Angular decorator that's also been downleveled.\n            if (clazz.hasOwnProperty('propDecorators') && clazz.propDecorators !== undefined) {\n                clazz.propDecorators = { ...clazz.propDecorators, ...propDecorators };\n            }\n            else {\n                clazz.propDecorators = propDecorators;\n            }\n        }\n    });\n}\n\n/**\n * Bindings for pure functions are stored after regular bindings.\n *\n * |-------decls------|---------vars---------|                 |----- hostVars (dir1) ------|\n * ------------------------------------------------------------------------------------------\n * | nodes/refs/pipes | bindings | fn slots  | injector | dir1 | host bindings | host slots |\n * ------------------------------------------------------------------------------------------\n *                    ^                      ^\n *      TView.bindingStartIndex      TView.expandoStartIndex\n *\n * Pure function instructions are given an offset from the binding root. Adding the offset to the\n * binding root gives the first index where the bindings are stored. In component views, the binding\n * root is the bindingStartIndex. In host bindings, the binding root is the expandoStartIndex +\n * any directive instances + any hostVars in directives evaluated before it.\n *\n * See VIEW_DATA.md for more information about host binding resolution.\n */\n/**\n * If the value hasn't been saved, calls the pure function to store and return the\n * value. If it has been saved, returns the saved value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn Function that returns a value\n * @param thisArg Optional calling context of pureFn\n * @returns value\n *\n * @codeGenApi\n */\nfunction ɵɵpureFunction0(slotOffset, pureFn, thisArg) {\n    const bindingIndex = getBindingRoot() + slotOffset;\n    const lView = getLView();\n    return lView[bindingIndex] === NO_CHANGE ?\n        updateBinding(lView, bindingIndex, thisArg ? pureFn.call(thisArg) : pureFn()) :\n        getBinding(lView, bindingIndex);\n}\n/**\n * If the value of the provided exp has changed, calls the pure function to return\n * an updated value. Or if the value has not changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn Function that returns an updated value\n * @param exp Updated expression value\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nfunction ɵɵpureFunction1(slotOffset, pureFn, exp, thisArg) {\n    return pureFunction1Internal(getLView(), getBindingRoot(), slotOffset, pureFn, exp, thisArg);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nfunction ɵɵpureFunction2(slotOffset, pureFn, exp1, exp2, thisArg) {\n    return pureFunction2Internal(getLView(), getBindingRoot(), slotOffset, pureFn, exp1, exp2, thisArg);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nfunction ɵɵpureFunction3(slotOffset, pureFn, exp1, exp2, exp3, thisArg) {\n    return pureFunction3Internal(getLView(), getBindingRoot(), slotOffset, pureFn, exp1, exp2, exp3, thisArg);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nfunction ɵɵpureFunction4(slotOffset, pureFn, exp1, exp2, exp3, exp4, thisArg) {\n    return pureFunction4Internal(getLView(), getBindingRoot(), slotOffset, pureFn, exp1, exp2, exp3, exp4, thisArg);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param exp5\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nfunction ɵɵpureFunction5(slotOffset, pureFn, exp1, exp2, exp3, exp4, exp5, thisArg) {\n    const bindingIndex = getBindingRoot() + slotOffset;\n    const lView = getLView();\n    const different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4);\n    return bindingUpdated(lView, bindingIndex + 4, exp5) || different ?\n        updateBinding(lView, bindingIndex + 5, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5) :\n            pureFn(exp1, exp2, exp3, exp4, exp5)) :\n        getBinding(lView, bindingIndex + 5);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param exp5\n * @param exp6\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nfunction ɵɵpureFunction6(slotOffset, pureFn, exp1, exp2, exp3, exp4, exp5, exp6, thisArg) {\n    const bindingIndex = getBindingRoot() + slotOffset;\n    const lView = getLView();\n    const different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4);\n    return bindingUpdated2(lView, bindingIndex + 4, exp5, exp6) || different ?\n        updateBinding(lView, bindingIndex + 6, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5, exp6) :\n            pureFn(exp1, exp2, exp3, exp4, exp5, exp6)) :\n        getBinding(lView, bindingIndex + 6);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param exp5\n * @param exp6\n * @param exp7\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nfunction ɵɵpureFunction7(slotOffset, pureFn, exp1, exp2, exp3, exp4, exp5, exp6, exp7, thisArg) {\n    const bindingIndex = getBindingRoot() + slotOffset;\n    const lView = getLView();\n    let different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4);\n    return bindingUpdated3(lView, bindingIndex + 4, exp5, exp6, exp7) || different ?\n        updateBinding(lView, bindingIndex + 7, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5, exp6, exp7) :\n            pureFn(exp1, exp2, exp3, exp4, exp5, exp6, exp7)) :\n        getBinding(lView, bindingIndex + 7);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param exp5\n * @param exp6\n * @param exp7\n * @param exp8\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nfunction ɵɵpureFunction8(slotOffset, pureFn, exp1, exp2, exp3, exp4, exp5, exp6, exp7, exp8, thisArg) {\n    const bindingIndex = getBindingRoot() + slotOffset;\n    const lView = getLView();\n    const different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4);\n    return bindingUpdated4(lView, bindingIndex + 4, exp5, exp6, exp7, exp8) || different ?\n        updateBinding(lView, bindingIndex + 8, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5, exp6, exp7, exp8) :\n            pureFn(exp1, exp2, exp3, exp4, exp5, exp6, exp7, exp8)) :\n        getBinding(lView, bindingIndex + 8);\n}\n/**\n * pureFunction instruction that can support any number of bindings.\n *\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn A pure function that takes binding values and builds an object or array\n * containing those values.\n * @param exps An array of binding values\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\nfunction ɵɵpureFunctionV(slotOffset, pureFn, exps, thisArg) {\n    return pureFunctionVInternal(getLView(), getBindingRoot(), slotOffset, pureFn, exps, thisArg);\n}\n/**\n * Results of a pure function invocation are stored in LView in a dedicated slot that is initialized\n * to NO_CHANGE. In rare situations a pure pipe might throw an exception on the very first\n * invocation and not produce any valid results. In this case LView would keep holding the NO_CHANGE\n * value. The NO_CHANGE is not something that we can use in expressions / bindings thus we convert\n * it to `undefined`.\n */\nfunction getPureFunctionReturnValue(lView, returnValueIndex) {\n    ngDevMode && assertIndexInRange(lView, returnValueIndex);\n    const lastReturnValue = lView[returnValueIndex];\n    return lastReturnValue === NO_CHANGE ? undefined : lastReturnValue;\n}\n/**\n * If the value of the provided exp has changed, calls the pure function to return\n * an updated value. Or if the value has not changed, returns cached value.\n *\n * @param lView LView in which the function is being executed.\n * @param bindingRoot Binding root index.\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn Function that returns an updated value\n * @param exp Updated expression value\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n */\nfunction pureFunction1Internal(lView, bindingRoot, slotOffset, pureFn, exp, thisArg) {\n    const bindingIndex = bindingRoot + slotOffset;\n    return bindingUpdated(lView, bindingIndex, exp) ?\n        updateBinding(lView, bindingIndex + 1, thisArg ? pureFn.call(thisArg, exp) : pureFn(exp)) :\n        getPureFunctionReturnValue(lView, bindingIndex + 1);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param lView LView in which the function is being executed.\n * @param bindingRoot Binding root index.\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n */\nfunction pureFunction2Internal(lView, bindingRoot, slotOffset, pureFn, exp1, exp2, thisArg) {\n    const bindingIndex = bindingRoot + slotOffset;\n    return bindingUpdated2(lView, bindingIndex, exp1, exp2) ?\n        updateBinding(lView, bindingIndex + 2, thisArg ? pureFn.call(thisArg, exp1, exp2) : pureFn(exp1, exp2)) :\n        getPureFunctionReturnValue(lView, bindingIndex + 2);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param lView LView in which the function is being executed.\n * @param bindingRoot Binding root index.\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n */\nfunction pureFunction3Internal(lView, bindingRoot, slotOffset, pureFn, exp1, exp2, exp3, thisArg) {\n    const bindingIndex = bindingRoot + slotOffset;\n    return bindingUpdated3(lView, bindingIndex, exp1, exp2, exp3) ?\n        updateBinding(lView, bindingIndex + 3, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3) : pureFn(exp1, exp2, exp3)) :\n        getPureFunctionReturnValue(lView, bindingIndex + 3);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param lView LView in which the function is being executed.\n * @param bindingRoot Binding root index.\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n */\nfunction pureFunction4Internal(lView, bindingRoot, slotOffset, pureFn, exp1, exp2, exp3, exp4, thisArg) {\n    const bindingIndex = bindingRoot + slotOffset;\n    return bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4) ?\n        updateBinding(lView, bindingIndex + 4, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4) : pureFn(exp1, exp2, exp3, exp4)) :\n        getPureFunctionReturnValue(lView, bindingIndex + 4);\n}\n/**\n * pureFunction instruction that can support any number of bindings.\n *\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param lView LView in which the function is being executed.\n * @param bindingRoot Binding root index.\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn A pure function that takes binding values and builds an object or array\n * containing those values.\n * @param exps An array of binding values\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n */\nfunction pureFunctionVInternal(lView, bindingRoot, slotOffset, pureFn, exps, thisArg) {\n    let bindingIndex = bindingRoot + slotOffset;\n    let different = false;\n    for (let i = 0; i < exps.length; i++) {\n        bindingUpdated(lView, bindingIndex++, exps[i]) && (different = true);\n    }\n    return different ? updateBinding(lView, bindingIndex, pureFn.apply(thisArg, exps)) :\n        getPureFunctionReturnValue(lView, bindingIndex);\n}\n\n/**\n * Create a pipe.\n *\n * @param index Pipe index where the pipe will be stored.\n * @param pipeName The name of the pipe\n * @returns T the instance of the pipe.\n *\n * @codeGenApi\n */\nfunction ɵɵpipe(index, pipeName) {\n    const tView = getTView();\n    let pipeDef;\n    const adjustedIndex = index + HEADER_OFFSET;\n    if (tView.firstCreatePass) {\n        // The `getPipeDef` throws if a pipe with a given name is not found\n        // (so we use non-null assertion below).\n        pipeDef = getPipeDef(pipeName, tView.pipeRegistry);\n        tView.data[adjustedIndex] = pipeDef;\n        if (pipeDef.onDestroy) {\n            (tView.destroyHooks ?? (tView.destroyHooks = [])).push(adjustedIndex, pipeDef.onDestroy);\n        }\n    }\n    else {\n        pipeDef = tView.data[adjustedIndex];\n    }\n    const pipeFactory = pipeDef.factory || (pipeDef.factory = getFactoryDef(pipeDef.type, true));\n    const previousInjectImplementation = setInjectImplementation(ɵɵdirectiveInject);\n    try {\n        // DI for pipes is supposed to behave like directives when placed on a component\n        // host node, which means that we have to disable access to `viewProviders`.\n        const previousIncludeViewProviders = setIncludeViewProviders(false);\n        const pipeInstance = pipeFactory();\n        setIncludeViewProviders(previousIncludeViewProviders);\n        store(tView, getLView(), adjustedIndex, pipeInstance);\n        return pipeInstance;\n    }\n    finally {\n        // we have to restore the injector implementation in finally, just in case the creation of the\n        // pipe throws an error.\n        setInjectImplementation(previousInjectImplementation);\n    }\n}\n/**\n * Searches the pipe registry for a pipe with the given name. If one is found,\n * returns the pipe. Otherwise, an error is thrown because the pipe cannot be resolved.\n *\n * @param name Name of pipe to resolve\n * @param registry Full list of available pipes\n * @returns Matching PipeDef\n */\nfunction getPipeDef(name, registry) {\n    if (registry) {\n        for (let i = registry.length - 1; i >= 0; i--) {\n            const pipeDef = registry[i];\n            if (name === pipeDef.name) {\n                return pipeDef;\n            }\n        }\n    }\n    if (ngDevMode) {\n        throw new RuntimeError(-302 /* RuntimeErrorCode.PIPE_NOT_FOUND */, getPipeNotFoundErrorMessage(name));\n    }\n}\n/**\n * Generates a helpful error message for the user when a pipe is not found.\n *\n * @param name Name of the missing pipe\n * @returns The error message\n */\nfunction getPipeNotFoundErrorMessage(name) {\n    const lView = getLView();\n    const declarationLView = lView[DECLARATION_COMPONENT_VIEW];\n    const context = declarationLView[CONTEXT];\n    const hostIsStandalone = isHostComponentStandalone(lView);\n    const componentInfoMessage = context ? ` in the '${context.constructor.name}' component` : '';\n    const verifyMessage = `Verify that it is ${hostIsStandalone ? 'included in the \\'@Component.imports\\' of this component' :\n        'declared or imported in this module'}`;\n    const errorMessage = `The pipe '${name}' could not be found${componentInfoMessage}. ${verifyMessage}`;\n    return errorMessage;\n}\n/**\n * Invokes a pipe with 1 arguments.\n *\n * This instruction acts as a guard to {@link PipeTransform#transform} invoking\n * the pipe only when an input to the pipe changes.\n *\n * @param index Pipe index where the pipe was stored on creation.\n * @param slotOffset the offset in the reserved slot space\n * @param v1 1st argument to {@link PipeTransform#transform}.\n *\n * @codeGenApi\n */\nfunction ɵɵpipeBind1(index, slotOffset, v1) {\n    const adjustedIndex = index + HEADER_OFFSET;\n    const lView = getLView();\n    const pipeInstance = load(lView, adjustedIndex);\n    return isPure(lView, adjustedIndex) ?\n        pureFunction1Internal(lView, getBindingRoot(), slotOffset, pipeInstance.transform, v1, pipeInstance) :\n        pipeInstance.transform(v1);\n}\n/**\n * Invokes a pipe with 2 arguments.\n *\n * This instruction acts as a guard to {@link PipeTransform#transform} invoking\n * the pipe only when an input to the pipe changes.\n *\n * @param index Pipe index where the pipe was stored on creation.\n * @param slotOffset the offset in the reserved slot space\n * @param v1 1st argument to {@link PipeTransform#transform}.\n * @param v2 2nd argument to {@link PipeTransform#transform}.\n *\n * @codeGenApi\n */\nfunction ɵɵpipeBind2(index, slotOffset, v1, v2) {\n    const adjustedIndex = index + HEADER_OFFSET;\n    const lView = getLView();\n    const pipeInstance = load(lView, adjustedIndex);\n    return isPure(lView, adjustedIndex) ?\n        pureFunction2Internal(lView, getBindingRoot(), slotOffset, pipeInstance.transform, v1, v2, pipeInstance) :\n        pipeInstance.transform(v1, v2);\n}\n/**\n * Invokes a pipe with 3 arguments.\n *\n * This instruction acts as a guard to {@link PipeTransform#transform} invoking\n * the pipe only when an input to the pipe changes.\n *\n * @param index Pipe index where the pipe was stored on creation.\n * @param slotOffset the offset in the reserved slot space\n * @param v1 1st argument to {@link PipeTransform#transform}.\n * @param v2 2nd argument to {@link PipeTransform#transform}.\n * @param v3 4rd argument to {@link PipeTransform#transform}.\n *\n * @codeGenApi\n */\nfunction ɵɵpipeBind3(index, slotOffset, v1, v2, v3) {\n    const adjustedIndex = index + HEADER_OFFSET;\n    const lView = getLView();\n    const pipeInstance = load(lView, adjustedIndex);\n    return isPure(lView, adjustedIndex) ?\n        pureFunction3Internal(lView, getBindingRoot(), slotOffset, pipeInstance.transform, v1, v2, v3, pipeInstance) :\n        pipeInstance.transform(v1, v2, v3);\n}\n/**\n * Invokes a pipe with 4 arguments.\n *\n * This instruction acts as a guard to {@link PipeTransform#transform} invoking\n * the pipe only when an input to the pipe changes.\n *\n * @param index Pipe index where the pipe was stored on creation.\n * @param slotOffset the offset in the reserved slot space\n * @param v1 1st argument to {@link PipeTransform#transform}.\n * @param v2 2nd argument to {@link PipeTransform#transform}.\n * @param v3 3rd argument to {@link PipeTransform#transform}.\n * @param v4 4th argument to {@link PipeTransform#transform}.\n *\n * @codeGenApi\n */\nfunction ɵɵpipeBind4(index, slotOffset, v1, v2, v3, v4) {\n    const adjustedIndex = index + HEADER_OFFSET;\n    const lView = getLView();\n    const pipeInstance = load(lView, adjustedIndex);\n    return isPure(lView, adjustedIndex) ? pureFunction4Internal(lView, getBindingRoot(), slotOffset, pipeInstance.transform, v1, v2, v3, v4, pipeInstance) :\n        pipeInstance.transform(v1, v2, v3, v4);\n}\n/**\n * Invokes a pipe with variable number of arguments.\n *\n * This instruction acts as a guard to {@link PipeTransform#transform} invoking\n * the pipe only when an input to the pipe changes.\n *\n * @param index Pipe index where the pipe was stored on creation.\n * @param slotOffset the offset in the reserved slot space\n * @param values Array of arguments to pass to {@link PipeTransform#transform} method.\n *\n * @codeGenApi\n */\nfunction ɵɵpipeBindV(index, slotOffset, values) {\n    const adjustedIndex = index + HEADER_OFFSET;\n    const lView = getLView();\n    const pipeInstance = load(lView, adjustedIndex);\n    return isPure(lView, adjustedIndex) ?\n        pureFunctionVInternal(lView, getBindingRoot(), slotOffset, pipeInstance.transform, values, pipeInstance) :\n        pipeInstance.transform.apply(pipeInstance, values);\n}\nfunction isPure(lView, index) {\n    return lView[TVIEW].data[index].pure;\n}\n\n/// <reference types=\"rxjs\" />\nclass EventEmitter_ extends Subject {\n    constructor(isAsync = false) {\n        super();\n        this.__isAsync = isAsync;\n    }\n    emit(value) {\n        super.next(value);\n    }\n    subscribe(observerOrNext, error, complete) {\n        let nextFn = observerOrNext;\n        let errorFn = error || (() => null);\n        let completeFn = complete;\n        if (observerOrNext && typeof observerOrNext === 'object') {\n            const observer = observerOrNext;\n            nextFn = observer.next?.bind(observer);\n            errorFn = observer.error?.bind(observer);\n            completeFn = observer.complete?.bind(observer);\n        }\n        if (this.__isAsync) {\n            errorFn = _wrapInTimeout(errorFn);\n            if (nextFn) {\n                nextFn = _wrapInTimeout(nextFn);\n            }\n            if (completeFn) {\n                completeFn = _wrapInTimeout(completeFn);\n            }\n        }\n        const sink = super.subscribe({ next: nextFn, error: errorFn, complete: completeFn });\n        if (observerOrNext instanceof Subscription) {\n            observerOrNext.add(sink);\n        }\n        return sink;\n    }\n}\nfunction _wrapInTimeout(fn) {\n    return (value) => {\n        setTimeout(fn, undefined, value);\n    };\n}\n/**\n * @publicApi\n */\nconst EventEmitter = EventEmitter_;\n\nfunction symbolIterator() {\n    // @ts-expect-error accessing a private member\n    return this._results[Symbol.iterator]();\n}\n/**\n * An unmodifiable list of items that Angular keeps up to date when the state\n * of the application changes.\n *\n * The type of object that {@link ViewChildren}, {@link ContentChildren}, and {@link QueryList}\n * provide.\n *\n * Implements an iterable interface, therefore it can be used in both ES6\n * javascript `for (var i of items)` loops as well as in Angular templates with\n * `*ngFor=\"let i of myList\"`.\n *\n * Changes can be observed by subscribing to the changes `Observable`.\n *\n * NOTE: In the future this class will implement an `Observable` interface.\n *\n * @usageNotes\n * ### Example\n * ```typescript\n * @Component({...})\n * class Container {\n *   @ViewChildren(Item) items:QueryList<Item>;\n * }\n * ```\n *\n * @publicApi\n */\nclass QueryList {\n    /**\n     * Returns `Observable` of `QueryList` notifying the subscriber of changes.\n     */\n    get changes() {\n        return this._changes || (this._changes = new EventEmitter());\n    }\n    /**\n     * @param emitDistinctChangesOnly Whether `QueryList.changes` should fire only when actual change\n     *     has occurred. Or if it should fire when query is recomputed. (recomputing could resolve in\n     *     the same result)\n     */\n    constructor(_emitDistinctChangesOnly = false) {\n        this._emitDistinctChangesOnly = _emitDistinctChangesOnly;\n        this.dirty = true;\n        this._results = [];\n        this._changesDetected = false;\n        this._changes = null;\n        this.length = 0;\n        this.first = undefined;\n        this.last = undefined;\n        // This function should be declared on the prototype, but doing so there will cause the class\n        // declaration to have side-effects and become not tree-shakable. For this reason we do it in\n        // the constructor.\n        // [Symbol.iterator](): Iterator<T> { ... }\n        const proto = QueryList.prototype;\n        if (!proto[Symbol.iterator])\n            proto[Symbol.iterator] = symbolIterator;\n    }\n    /**\n     * Returns the QueryList entry at `index`.\n     */\n    get(index) {\n        return this._results[index];\n    }\n    /**\n     * See\n     * [Array.map](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map)\n     */\n    map(fn) {\n        return this._results.map(fn);\n    }\n    /**\n     * See\n     * [Array.filter](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter)\n     */\n    filter(fn) {\n        return this._results.filter(fn);\n    }\n    /**\n     * See\n     * [Array.find](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find)\n     */\n    find(fn) {\n        return this._results.find(fn);\n    }\n    /**\n     * See\n     * [Array.reduce](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce)\n     */\n    reduce(fn, init) {\n        return this._results.reduce(fn, init);\n    }\n    /**\n     * See\n     * [Array.forEach](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach)\n     */\n    forEach(fn) {\n        this._results.forEach(fn);\n    }\n    /**\n     * See\n     * [Array.some](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some)\n     */\n    some(fn) {\n        return this._results.some(fn);\n    }\n    /**\n     * Returns a copy of the internal results list as an Array.\n     */\n    toArray() {\n        return this._results.slice();\n    }\n    toString() {\n        return this._results.toString();\n    }\n    /**\n     * Updates the stored data of the query list, and resets the `dirty` flag to `false`, so that\n     * on change detection, it will not notify of changes to the queries, unless a new change\n     * occurs.\n     *\n     * @param resultsTree The query results to store\n     * @param identityAccessor Optional function for extracting stable object identity from a value\n     *    in the array. This function is executed for each element of the query result list while\n     *    comparing current query list with the new one (provided as a first argument of the `reset`\n     *    function) to detect if the lists are different. If the function is not provided, elements\n     *    are compared as is (without any pre-processing).\n     */\n    reset(resultsTree, identityAccessor) {\n        // Cast to `QueryListInternal` so that we can mutate fields which are readonly for the usage of\n        // QueryList (but not for QueryList itself.)\n        const self = this;\n        self.dirty = false;\n        const newResultFlat = flatten(resultsTree);\n        if (this._changesDetected = !arrayEquals(self._results, newResultFlat, identityAccessor)) {\n            self._results = newResultFlat;\n            self.length = newResultFlat.length;\n            self.last = newResultFlat[this.length - 1];\n            self.first = newResultFlat[0];\n        }\n    }\n    /**\n     * Triggers a change event by emitting on the `changes` {@link EventEmitter}.\n     */\n    notifyOnChanges() {\n        if (this._changes && (this._changesDetected || !this._emitDistinctChangesOnly))\n            this._changes.emit(this);\n    }\n    /** internal */\n    setDirty() {\n        this.dirty = true;\n    }\n    /** internal */\n    destroy() {\n        this.changes.complete();\n        this.changes.unsubscribe();\n    }\n}\nSymbol.iterator;\n\n/**\n * Represents an embedded template that can be used to instantiate embedded views.\n * To instantiate embedded views based on a template, use the `ViewContainerRef`\n * method `createEmbeddedView()`.\n *\n * Access a `TemplateRef` instance by placing a directive on an `<ng-template>`\n * element (or directive prefixed with `*`). The `TemplateRef` for the embedded view\n * is injected into the constructor of the directive,\n * using the `TemplateRef` token.\n *\n * You can also use a `Query` to find a `TemplateRef` associated with\n * a component or a directive.\n *\n * @see `ViewContainerRef`\n * @see [Navigate the Component Tree with DI](guide/dependency-injection-navtree)\n *\n * @publicApi\n */\nclass TemplateRef {\n}\n/**\n * @internal\n * @nocollapse\n */\nTemplateRef.__NG_ELEMENT_ID__ = injectTemplateRef;\nconst ViewEngineTemplateRef = TemplateRef;\n// TODO(alxhub): combine interface and implementation. Currently this is challenging since something\n// in g3 depends on them being separate.\nconst R3TemplateRef = class TemplateRef extends ViewEngineTemplateRef {\n    constructor(_declarationLView, _declarationTContainer, elementRef) {\n        super();\n        this._declarationLView = _declarationLView;\n        this._declarationTContainer = _declarationTContainer;\n        this.elementRef = elementRef;\n    }\n    createEmbeddedView(context, injector) {\n        const embeddedTView = this._declarationTContainer.tView;\n        const embeddedLView = createLView(this._declarationLView, embeddedTView, context, 16 /* LViewFlags.CheckAlways */, null, embeddedTView.declTNode, null, null, null, null, injector || null);\n        const declarationLContainer = this._declarationLView[this._declarationTContainer.index];\n        ngDevMode && assertLContainer(declarationLContainer);\n        embeddedLView[DECLARATION_LCONTAINER] = declarationLContainer;\n        const declarationViewLQueries = this._declarationLView[QUERIES];\n        if (declarationViewLQueries !== null) {\n            embeddedLView[QUERIES] = declarationViewLQueries.createEmbeddedView(embeddedTView);\n        }\n        renderView(embeddedTView, embeddedLView, context);\n        return new ViewRef$1(embeddedLView);\n    }\n};\n/**\n * Creates a TemplateRef given a node.\n *\n * @returns The TemplateRef instance to use\n */\nfunction injectTemplateRef() {\n    return createTemplateRef(getCurrentTNode(), getLView());\n}\n/**\n * Creates a TemplateRef and stores it on the injector.\n *\n * @param hostTNode The node on which a TemplateRef is requested\n * @param hostLView The `LView` to which the node belongs\n * @returns The TemplateRef instance or null if we can't create a TemplateRef on a given node type\n */\nfunction createTemplateRef(hostTNode, hostLView) {\n    if (hostTNode.type & 4 /* TNodeType.Container */) {\n        ngDevMode && assertDefined(hostTNode.tView, 'TView must be allocated');\n        return new R3TemplateRef(hostLView, hostTNode, createElementRef(hostTNode, hostLView));\n    }\n    return null;\n}\n\n/**\n * Represents a container where one or more views can be attached to a component.\n *\n * Can contain *host views* (created by instantiating a\n * component with the `createComponent()` method), and *embedded views*\n * (created by instantiating a `TemplateRef` with the `createEmbeddedView()` method).\n *\n * A view container instance can contain other view containers,\n * creating a [view hierarchy](guide/glossary#view-hierarchy).\n *\n * @see `ComponentRef`\n * @see `EmbeddedViewRef`\n *\n * @publicApi\n */\nclass ViewContainerRef {\n}\n/**\n * @internal\n * @nocollapse\n */\nViewContainerRef.__NG_ELEMENT_ID__ = injectViewContainerRef;\n/**\n * Creates a ViewContainerRef and stores it on the injector. Or, if the ViewContainerRef\n * already exists, retrieves the existing ViewContainerRef.\n *\n * @returns The ViewContainerRef instance to use\n */\nfunction injectViewContainerRef() {\n    const previousTNode = getCurrentTNode();\n    return createContainerRef(previousTNode, getLView());\n}\nconst VE_ViewContainerRef = ViewContainerRef;\n// TODO(alxhub): cleaning up this indirection triggers a subtle bug in Closure in g3. Once the fix\n// for that lands, this can be cleaned up.\nconst R3ViewContainerRef = class ViewContainerRef extends VE_ViewContainerRef {\n    constructor(_lContainer, _hostTNode, _hostLView) {\n        super();\n        this._lContainer = _lContainer;\n        this._hostTNode = _hostTNode;\n        this._hostLView = _hostLView;\n    }\n    get element() {\n        return createElementRef(this._hostTNode, this._hostLView);\n    }\n    get injector() {\n        return new NodeInjector(this._hostTNode, this._hostLView);\n    }\n    /** @deprecated No replacement */\n    get parentInjector() {\n        const parentLocation = getParentInjectorLocation(this._hostTNode, this._hostLView);\n        if (hasParentInjector(parentLocation)) {\n            const parentView = getParentInjectorView(parentLocation, this._hostLView);\n            const injectorIndex = getParentInjectorIndex(parentLocation);\n            ngDevMode && assertNodeInjector(parentView, injectorIndex);\n            const parentTNode = parentView[TVIEW].data[injectorIndex + 8 /* NodeInjectorOffset.TNODE */];\n            return new NodeInjector(parentTNode, parentView);\n        }\n        else {\n            return new NodeInjector(null, this._hostLView);\n        }\n    }\n    clear() {\n        while (this.length > 0) {\n            this.remove(this.length - 1);\n        }\n    }\n    get(index) {\n        const viewRefs = getViewRefs(this._lContainer);\n        return viewRefs !== null && viewRefs[index] || null;\n    }\n    get length() {\n        return this._lContainer.length - CONTAINER_HEADER_OFFSET;\n    }\n    createEmbeddedView(templateRef, context, indexOrOptions) {\n        let index;\n        let injector;\n        if (typeof indexOrOptions === 'number') {\n            index = indexOrOptions;\n        }\n        else if (indexOrOptions != null) {\n            index = indexOrOptions.index;\n            injector = indexOrOptions.injector;\n        }\n        const viewRef = templateRef.createEmbeddedView(context || {}, injector);\n        this.insert(viewRef, index);\n        return viewRef;\n    }\n    createComponent(componentFactoryOrType, indexOrOptions, injector, projectableNodes, environmentInjector) {\n        const isComponentFactory = componentFactoryOrType && !isType(componentFactoryOrType);\n        let index;\n        // This function supports 2 signatures and we need to handle options correctly for both:\n        //   1. When first argument is a Component type. This signature also requires extra\n        //      options to be provided as as object (more ergonomic option).\n        //   2. First argument is a Component factory. In this case extra options are represented as\n        //      positional arguments. This signature is less ergonomic and will be deprecated.\n        if (isComponentFactory) {\n            if (ngDevMode) {\n                assertEqual(typeof indexOrOptions !== 'object', true, 'It looks like Component factory was provided as the first argument ' +\n                    'and an options object as the second argument. This combination of arguments ' +\n                    'is incompatible. You can either change the first argument to provide Component ' +\n                    'type or change the second argument to be a number (representing an index at ' +\n                    'which to insert the new component\\'s host view into this container)');\n            }\n            index = indexOrOptions;\n        }\n        else {\n            if (ngDevMode) {\n                assertDefined(getComponentDef(componentFactoryOrType), `Provided Component class doesn't contain Component definition. ` +\n                    `Please check whether provided class has @Component decorator.`);\n                assertEqual(typeof indexOrOptions !== 'number', true, 'It looks like Component type was provided as the first argument ' +\n                    'and a number (representing an index at which to insert the new component\\'s ' +\n                    'host view into this container as the second argument. This combination of arguments ' +\n                    'is incompatible. Please use an object as the second argument instead.');\n            }\n            const options = (indexOrOptions || {});\n            if (ngDevMode && options.environmentInjector && options.ngModuleRef) {\n                throwError(`Cannot pass both environmentInjector and ngModuleRef options to createComponent().`);\n            }\n            index = options.index;\n            injector = options.injector;\n            projectableNodes = options.projectableNodes;\n            environmentInjector = options.environmentInjector || options.ngModuleRef;\n        }\n        const componentFactory = isComponentFactory ?\n            componentFactoryOrType :\n            new ComponentFactory(getComponentDef(componentFactoryOrType));\n        const contextInjector = injector || this.parentInjector;\n        // If an `NgModuleRef` is not provided explicitly, try retrieving it from the DI tree.\n        if (!environmentInjector && componentFactory.ngModule == null) {\n            // For the `ComponentFactory` case, entering this logic is very unlikely, since we expect that\n            // an instance of a `ComponentFactory`, resolved via `ComponentFactoryResolver` would have an\n            // `ngModule` field. This is possible in some test scenarios and potentially in some JIT-based\n            // use-cases. For the `ComponentFactory` case we preserve backwards-compatibility and try\n            // using a provided injector first, then fall back to the parent injector of this\n            // `ViewContainerRef` instance.\n            //\n            // For the factory-less case, it's critical to establish a connection with the module\n            // injector tree (by retrieving an instance of an `NgModuleRef` and accessing its injector),\n            // so that a component can use DI tokens provided in MgModules. For this reason, we can not\n            // rely on the provided injector, since it might be detached from the DI tree (for example, if\n            // it was created via `Injector.create` without specifying a parent injector, or if an\n            // injector is retrieved from an `NgModuleRef` created via `createNgModule` using an\n            // NgModule outside of a module tree). Instead, we always use `ViewContainerRef`'s parent\n            // injector, which is normally connected to the DI tree, which includes module injector\n            // subtree.\n            const _injector = isComponentFactory ? contextInjector : this.parentInjector;\n            // DO NOT REFACTOR. The code here used to have a `injector.get(NgModuleRef, null) ||\n            // undefined` expression which seems to cause internal google apps to fail. This is documented\n            // in the following internal bug issue: go/b/142967802\n            const result = _injector.get(EnvironmentInjector, null);\n            if (result) {\n                environmentInjector = result;\n            }\n        }\n        const componentRef = componentFactory.create(contextInjector, projectableNodes, undefined, environmentInjector);\n        this.insert(componentRef.hostView, index);\n        return componentRef;\n    }\n    insert(viewRef, index) {\n        const lView = viewRef._lView;\n        const tView = lView[TVIEW];\n        if (ngDevMode && viewRef.destroyed) {\n            throw new Error('Cannot insert a destroyed View in a ViewContainer!');\n        }\n        if (viewAttachedToContainer(lView)) {\n            // If view is already attached, detach it first so we clean up references appropriately.\n            const prevIdx = this.indexOf(viewRef);\n            // A view might be attached either to this or a different container. The `prevIdx` for\n            // those cases will be:\n            // equal to -1 for views attached to this ViewContainerRef\n            // >= 0 for views attached to a different ViewContainerRef\n            if (prevIdx !== -1) {\n                this.detach(prevIdx);\n            }\n            else {\n                const prevLContainer = lView[PARENT];\n                ngDevMode &&\n                    assertEqual(isLContainer(prevLContainer), true, 'An attached view should have its PARENT point to a container.');\n                // We need to re-create a R3ViewContainerRef instance since those are not stored on\n                // LView (nor anywhere else).\n                const prevVCRef = new R3ViewContainerRef(prevLContainer, prevLContainer[T_HOST], prevLContainer[PARENT]);\n                prevVCRef.detach(prevVCRef.indexOf(viewRef));\n            }\n        }\n        // Logical operation of adding `LView` to `LContainer`\n        const adjustedIdx = this._adjustIndex(index);\n        const lContainer = this._lContainer;\n        insertView(tView, lView, lContainer, adjustedIdx);\n        // Physical operation of adding the DOM nodes.\n        const beforeNode = getBeforeNodeForView(adjustedIdx, lContainer);\n        const renderer = lView[RENDERER];\n        const parentRNode = nativeParentNode(renderer, lContainer[NATIVE]);\n        if (parentRNode !== null) {\n            addViewToContainer(tView, lContainer[T_HOST], renderer, lView, parentRNode, beforeNode);\n        }\n        viewRef.attachToViewContainerRef();\n        addToArray(getOrCreateViewRefs(lContainer), adjustedIdx, viewRef);\n        return viewRef;\n    }\n    move(viewRef, newIndex) {\n        if (ngDevMode && viewRef.destroyed) {\n            throw new Error('Cannot move a destroyed View in a ViewContainer!');\n        }\n        return this.insert(viewRef, newIndex);\n    }\n    indexOf(viewRef) {\n        const viewRefsArr = getViewRefs(this._lContainer);\n        return viewRefsArr !== null ? viewRefsArr.indexOf(viewRef) : -1;\n    }\n    remove(index) {\n        const adjustedIdx = this._adjustIndex(index, -1);\n        const detachedView = detachView(this._lContainer, adjustedIdx);\n        if (detachedView) {\n            // Before destroying the view, remove it from the container's array of `ViewRef`s.\n            // This ensures the view container length is updated before calling\n            // `destroyLView`, which could recursively call view container methods that\n            // rely on an accurate container length.\n            // (e.g. a method on this view container being called by a child directive's OnDestroy\n            // lifecycle hook)\n            removeFromArray(getOrCreateViewRefs(this._lContainer), adjustedIdx);\n            destroyLView(detachedView[TVIEW], detachedView);\n        }\n    }\n    detach(index) {\n        const adjustedIdx = this._adjustIndex(index, -1);\n        const view = detachView(this._lContainer, adjustedIdx);\n        const wasDetached = view && removeFromArray(getOrCreateViewRefs(this._lContainer), adjustedIdx) != null;\n        return wasDetached ? new ViewRef$1(view) : null;\n    }\n    _adjustIndex(index, shift = 0) {\n        if (index == null) {\n            return this.length + shift;\n        }\n        if (ngDevMode) {\n            assertGreaterThan(index, -1, `ViewRef index must be positive, got ${index}`);\n            // +1 because it's legal to insert at the end.\n            assertLessThan(index, this.length + 1 + shift, 'index');\n        }\n        return index;\n    }\n};\nfunction getViewRefs(lContainer) {\n    return lContainer[VIEW_REFS];\n}\nfunction getOrCreateViewRefs(lContainer) {\n    return (lContainer[VIEW_REFS] || (lContainer[VIEW_REFS] = []));\n}\n/**\n * Creates a ViewContainerRef and stores it on the injector.\n *\n * @param ViewContainerRefToken The ViewContainerRef type\n * @param ElementRefToken The ElementRef type\n * @param hostTNode The node that is requesting a ViewContainerRef\n * @param hostLView The view to which the node belongs\n * @returns The ViewContainerRef instance to use\n */\nfunction createContainerRef(hostTNode, hostLView) {\n    ngDevMode && assertTNodeType(hostTNode, 12 /* TNodeType.AnyContainer */ | 3 /* TNodeType.AnyRNode */);\n    let lContainer;\n    const slotValue = hostLView[hostTNode.index];\n    if (isLContainer(slotValue)) {\n        // If the host is a container, we don't need to create a new LContainer\n        lContainer = slotValue;\n    }\n    else {\n        let commentNode;\n        // If the host is an element container, the native host element is guaranteed to be a\n        // comment and we can reuse that comment as anchor element for the new LContainer.\n        // The comment node in question is already part of the DOM structure so we don't need to append\n        // it again.\n        if (hostTNode.type & 8 /* TNodeType.ElementContainer */) {\n            commentNode = unwrapRNode(slotValue);\n        }\n        else {\n            // If the host is a regular element, we have to insert a comment node manually which will\n            // be used as an anchor when inserting elements. In this specific case we use low-level DOM\n            // manipulation to insert it.\n            const renderer = hostLView[RENDERER];\n            ngDevMode && ngDevMode.rendererCreateComment++;\n            commentNode = renderer.createComment(ngDevMode ? 'container' : '');\n            const hostNative = getNativeByTNode(hostTNode, hostLView);\n            const parentOfHostNative = nativeParentNode(renderer, hostNative);\n            nativeInsertBefore(renderer, parentOfHostNative, commentNode, nativeNextSibling(renderer, hostNative), false);\n        }\n        hostLView[hostTNode.index] = lContainer =\n            createLContainer(slotValue, hostLView, commentNode, hostTNode);\n        addToViewTree(hostLView, lContainer);\n    }\n    return new R3ViewContainerRef(lContainer, hostTNode, hostLView);\n}\n\nclass LQuery_ {\n    constructor(queryList) {\n        this.queryList = queryList;\n        this.matches = null;\n    }\n    clone() {\n        return new LQuery_(this.queryList);\n    }\n    setDirty() {\n        this.queryList.setDirty();\n    }\n}\nclass LQueries_ {\n    constructor(queries = []) {\n        this.queries = queries;\n    }\n    createEmbeddedView(tView) {\n        const tQueries = tView.queries;\n        if (tQueries !== null) {\n            const noOfInheritedQueries = tView.contentQueries !== null ? tView.contentQueries[0] : tQueries.length;\n            const viewLQueries = [];\n            // An embedded view has queries propagated from a declaration view at the beginning of the\n            // TQueries collection and up until a first content query declared in the embedded view. Only\n            // propagated LQueries are created at this point (LQuery corresponding to declared content\n            // queries will be instantiated from the content query instructions for each directive).\n            for (let i = 0; i < noOfInheritedQueries; i++) {\n                const tQuery = tQueries.getByIndex(i);\n                const parentLQuery = this.queries[tQuery.indexInDeclarationView];\n                viewLQueries.push(parentLQuery.clone());\n            }\n            return new LQueries_(viewLQueries);\n        }\n        return null;\n    }\n    insertView(tView) {\n        this.dirtyQueriesWithMatches(tView);\n    }\n    detachView(tView) {\n        this.dirtyQueriesWithMatches(tView);\n    }\n    dirtyQueriesWithMatches(tView) {\n        for (let i = 0; i < this.queries.length; i++) {\n            if (getTQuery(tView, i).matches !== null) {\n                this.queries[i].setDirty();\n            }\n        }\n    }\n}\nclass TQueryMetadata_ {\n    constructor(predicate, flags, read = null) {\n        this.predicate = predicate;\n        this.flags = flags;\n        this.read = read;\n    }\n}\nclass TQueries_ {\n    constructor(queries = []) {\n        this.queries = queries;\n    }\n    elementStart(tView, tNode) {\n        ngDevMode &&\n            assertFirstCreatePass(tView, 'Queries should collect results on the first template pass only');\n        for (let i = 0; i < this.queries.length; i++) {\n            this.queries[i].elementStart(tView, tNode);\n        }\n    }\n    elementEnd(tNode) {\n        for (let i = 0; i < this.queries.length; i++) {\n            this.queries[i].elementEnd(tNode);\n        }\n    }\n    embeddedTView(tNode) {\n        let queriesForTemplateRef = null;\n        for (let i = 0; i < this.length; i++) {\n            const childQueryIndex = queriesForTemplateRef !== null ? queriesForTemplateRef.length : 0;\n            const tqueryClone = this.getByIndex(i).embeddedTView(tNode, childQueryIndex);\n            if (tqueryClone) {\n                tqueryClone.indexInDeclarationView = i;\n                if (queriesForTemplateRef !== null) {\n                    queriesForTemplateRef.push(tqueryClone);\n                }\n                else {\n                    queriesForTemplateRef = [tqueryClone];\n                }\n            }\n        }\n        return queriesForTemplateRef !== null ? new TQueries_(queriesForTemplateRef) : null;\n    }\n    template(tView, tNode) {\n        ngDevMode &&\n            assertFirstCreatePass(tView, 'Queries should collect results on the first template pass only');\n        for (let i = 0; i < this.queries.length; i++) {\n            this.queries[i].template(tView, tNode);\n        }\n    }\n    getByIndex(index) {\n        ngDevMode && assertIndexInRange(this.queries, index);\n        return this.queries[index];\n    }\n    get length() {\n        return this.queries.length;\n    }\n    track(tquery) {\n        this.queries.push(tquery);\n    }\n}\nclass TQuery_ {\n    constructor(metadata, nodeIndex = -1) {\n        this.metadata = metadata;\n        this.matches = null;\n        this.indexInDeclarationView = -1;\n        this.crossesNgTemplate = false;\n        /**\n         * A flag indicating if a given query still applies to nodes it is crossing. We use this flag\n         * (alongside with _declarationNodeIndex) to know when to stop applying content queries to\n         * elements in a template.\n         */\n        this._appliesToNextNode = true;\n        this._declarationNodeIndex = nodeIndex;\n    }\n    elementStart(tView, tNode) {\n        if (this.isApplyingToNode(tNode)) {\n            this.matchTNode(tView, tNode);\n        }\n    }\n    elementEnd(tNode) {\n        if (this._declarationNodeIndex === tNode.index) {\n            this._appliesToNextNode = false;\n        }\n    }\n    template(tView, tNode) {\n        this.elementStart(tView, tNode);\n    }\n    embeddedTView(tNode, childQueryIndex) {\n        if (this.isApplyingToNode(tNode)) {\n            this.crossesNgTemplate = true;\n            // A marker indicating a `<ng-template>` element (a placeholder for query results from\n            // embedded views created based on this `<ng-template>`).\n            this.addMatch(-tNode.index, childQueryIndex);\n            return new TQuery_(this.metadata);\n        }\n        return null;\n    }\n    isApplyingToNode(tNode) {\n        if (this._appliesToNextNode &&\n            (this.metadata.flags & 1 /* QueryFlags.descendants */) !== 1 /* QueryFlags.descendants */) {\n            const declarationNodeIdx = this._declarationNodeIndex;\n            let parent = tNode.parent;\n            // Determine if a given TNode is a \"direct\" child of a node on which a content query was\n            // declared (only direct children of query's host node can match with the descendants: false\n            // option). There are 3 main use-case / conditions to consider here:\n            // - <needs-target><i #target></i></needs-target>: here <i #target> parent node is a query\n            // host node;\n            // - <needs-target><ng-template [ngIf]=\"true\"><i #target></i></ng-template></needs-target>:\n            // here <i #target> parent node is null;\n            // - <needs-target><ng-container><i #target></i></ng-container></needs-target>: here we need\n            // to go past `<ng-container>` to determine <i #target> parent node (but we shouldn't traverse\n            // up past the query's host node!).\n            while (parent !== null && (parent.type & 8 /* TNodeType.ElementContainer */) &&\n                parent.index !== declarationNodeIdx) {\n                parent = parent.parent;\n            }\n            return declarationNodeIdx === (parent !== null ? parent.index : -1);\n        }\n        return this._appliesToNextNode;\n    }\n    matchTNode(tView, tNode) {\n        const predicate = this.metadata.predicate;\n        if (Array.isArray(predicate)) {\n            for (let i = 0; i < predicate.length; i++) {\n                const name = predicate[i];\n                this.matchTNodeWithReadOption(tView, tNode, getIdxOfMatchingSelector(tNode, name));\n                // Also try matching the name to a provider since strings can be used as DI tokens too.\n                this.matchTNodeWithReadOption(tView, tNode, locateDirectiveOrProvider(tNode, tView, name, false, false));\n            }\n        }\n        else {\n            if (predicate === TemplateRef) {\n                if (tNode.type & 4 /* TNodeType.Container */) {\n                    this.matchTNodeWithReadOption(tView, tNode, -1);\n                }\n            }\n            else {\n                this.matchTNodeWithReadOption(tView, tNode, locateDirectiveOrProvider(tNode, tView, predicate, false, false));\n            }\n        }\n    }\n    matchTNodeWithReadOption(tView, tNode, nodeMatchIdx) {\n        if (nodeMatchIdx !== null) {\n            const read = this.metadata.read;\n            if (read !== null) {\n                if (read === ElementRef || read === ViewContainerRef ||\n                    read === TemplateRef && (tNode.type & 4 /* TNodeType.Container */)) {\n                    this.addMatch(tNode.index, -2);\n                }\n                else {\n                    const directiveOrProviderIdx = locateDirectiveOrProvider(tNode, tView, read, false, false);\n                    if (directiveOrProviderIdx !== null) {\n                        this.addMatch(tNode.index, directiveOrProviderIdx);\n                    }\n                }\n            }\n            else {\n                this.addMatch(tNode.index, nodeMatchIdx);\n            }\n        }\n    }\n    addMatch(tNodeIdx, matchIdx) {\n        if (this.matches === null) {\n            this.matches = [tNodeIdx, matchIdx];\n        }\n        else {\n            this.matches.push(tNodeIdx, matchIdx);\n        }\n    }\n}\n/**\n * Iterates over local names for a given node and returns directive index\n * (or -1 if a local name points to an element).\n *\n * @param tNode static data of a node to check\n * @param selector selector to match\n * @returns directive index, -1 or null if a selector didn't match any of the local names\n */\nfunction getIdxOfMatchingSelector(tNode, selector) {\n    const localNames = tNode.localNames;\n    if (localNames !== null) {\n        for (let i = 0; i < localNames.length; i += 2) {\n            if (localNames[i] === selector) {\n                return localNames[i + 1];\n            }\n        }\n    }\n    return null;\n}\nfunction createResultByTNodeType(tNode, currentView) {\n    if (tNode.type & (3 /* TNodeType.AnyRNode */ | 8 /* TNodeType.ElementContainer */)) {\n        return createElementRef(tNode, currentView);\n    }\n    else if (tNode.type & 4 /* TNodeType.Container */) {\n        return createTemplateRef(tNode, currentView);\n    }\n    return null;\n}\nfunction createResultForNode(lView, tNode, matchingIdx, read) {\n    if (matchingIdx === -1) {\n        // if read token and / or strategy is not specified, detect it using appropriate tNode type\n        return createResultByTNodeType(tNode, lView);\n    }\n    else if (matchingIdx === -2) {\n        // read a special token from a node injector\n        return createSpecialToken(lView, tNode, read);\n    }\n    else {\n        // read a token\n        return getNodeInjectable(lView, lView[TVIEW], matchingIdx, tNode);\n    }\n}\nfunction createSpecialToken(lView, tNode, read) {\n    if (read === ElementRef) {\n        return createElementRef(tNode, lView);\n    }\n    else if (read === TemplateRef) {\n        return createTemplateRef(tNode, lView);\n    }\n    else if (read === ViewContainerRef) {\n        ngDevMode && assertTNodeType(tNode, 3 /* TNodeType.AnyRNode */ | 12 /* TNodeType.AnyContainer */);\n        return createContainerRef(tNode, lView);\n    }\n    else {\n        ngDevMode &&\n            throwError(`Special token to read should be one of ElementRef, TemplateRef or ViewContainerRef but got ${stringify(read)}.`);\n    }\n}\n/**\n * A helper function that creates query results for a given view. This function is meant to do the\n * processing once and only once for a given view instance (a set of results for a given view\n * doesn't change).\n */\nfunction materializeViewResults(tView, lView, tQuery, queryIndex) {\n    const lQuery = lView[QUERIES].queries[queryIndex];\n    if (lQuery.matches === null) {\n        const tViewData = tView.data;\n        const tQueryMatches = tQuery.matches;\n        const result = [];\n        for (let i = 0; i < tQueryMatches.length; i += 2) {\n            const matchedNodeIdx = tQueryMatches[i];\n            if (matchedNodeIdx < 0) {\n                // we at the <ng-template> marker which might have results in views created based on this\n                // <ng-template> - those results will be in separate views though, so here we just leave\n                // null as a placeholder\n                result.push(null);\n            }\n            else {\n                ngDevMode && assertIndexInRange(tViewData, matchedNodeIdx);\n                const tNode = tViewData[matchedNodeIdx];\n                result.push(createResultForNode(lView, tNode, tQueryMatches[i + 1], tQuery.metadata.read));\n            }\n        }\n        lQuery.matches = result;\n    }\n    return lQuery.matches;\n}\n/**\n * A helper function that collects (already materialized) query results from a tree of views,\n * starting with a provided LView.\n */\nfunction collectQueryResults(tView, lView, queryIndex, result) {\n    const tQuery = tView.queries.getByIndex(queryIndex);\n    const tQueryMatches = tQuery.matches;\n    if (tQueryMatches !== null) {\n        const lViewResults = materializeViewResults(tView, lView, tQuery, queryIndex);\n        for (let i = 0; i < tQueryMatches.length; i += 2) {\n            const tNodeIdx = tQueryMatches[i];\n            if (tNodeIdx > 0) {\n                result.push(lViewResults[i / 2]);\n            }\n            else {\n                const childQueryIndex = tQueryMatches[i + 1];\n                const declarationLContainer = lView[-tNodeIdx];\n                ngDevMode && assertLContainer(declarationLContainer);\n                // collect matches for views inserted in this container\n                for (let i = CONTAINER_HEADER_OFFSET; i < declarationLContainer.length; i++) {\n                    const embeddedLView = declarationLContainer[i];\n                    if (embeddedLView[DECLARATION_LCONTAINER] === embeddedLView[PARENT]) {\n                        collectQueryResults(embeddedLView[TVIEW], embeddedLView, childQueryIndex, result);\n                    }\n                }\n                // collect matches for views created from this declaration container and inserted into\n                // different containers\n                if (declarationLContainer[MOVED_VIEWS] !== null) {\n                    const embeddedLViews = declarationLContainer[MOVED_VIEWS];\n                    for (let i = 0; i < embeddedLViews.length; i++) {\n                        const embeddedLView = embeddedLViews[i];\n                        collectQueryResults(embeddedLView[TVIEW], embeddedLView, childQueryIndex, result);\n                    }\n                }\n            }\n        }\n    }\n    return result;\n}\n/**\n * Refreshes a query by combining matches from all active views and removing matches from deleted\n * views.\n *\n * @returns `true` if a query got dirty during change detection or if this is a static query\n * resolving in creation mode, `false` otherwise.\n *\n * @codeGenApi\n */\nfunction ɵɵqueryRefresh(queryList) {\n    const lView = getLView();\n    const tView = getTView();\n    const queryIndex = getCurrentQueryIndex();\n    setCurrentQueryIndex(queryIndex + 1);\n    const tQuery = getTQuery(tView, queryIndex);\n    if (queryList.dirty &&\n        (isCreationMode(lView) ===\n            ((tQuery.metadata.flags & 2 /* QueryFlags.isStatic */) === 2 /* QueryFlags.isStatic */))) {\n        if (tQuery.matches === null) {\n            queryList.reset([]);\n        }\n        else {\n            const result = tQuery.crossesNgTemplate ?\n                collectQueryResults(tView, lView, queryIndex, []) :\n                materializeViewResults(tView, lView, tQuery, queryIndex);\n            queryList.reset(result, unwrapElementRef);\n            queryList.notifyOnChanges();\n        }\n        return true;\n    }\n    return false;\n}\n/**\n * Creates new QueryList, stores the reference in LView and returns QueryList.\n *\n * @param predicate The type for which the query will search\n * @param flags Flags associated with the query\n * @param read What to save in the query\n *\n * @codeGenApi\n */\nfunction ɵɵviewQuery(predicate, flags, read) {\n    ngDevMode && assertNumber(flags, 'Expecting flags');\n    const tView = getTView();\n    if (tView.firstCreatePass) {\n        createTQuery(tView, new TQueryMetadata_(predicate, flags, read), -1);\n        if ((flags & 2 /* QueryFlags.isStatic */) === 2 /* QueryFlags.isStatic */) {\n            tView.staticViewQueries = true;\n        }\n    }\n    createLQuery(tView, getLView(), flags);\n}\n/**\n * Registers a QueryList, associated with a content query, for later refresh (part of a view\n * refresh).\n *\n * @param directiveIndex Current directive index\n * @param predicate The type for which the query will search\n * @param flags Flags associated with the query\n * @param read What to save in the query\n * @returns QueryList<T>\n *\n * @codeGenApi\n */\nfunction ɵɵcontentQuery(directiveIndex, predicate, flags, read) {\n    ngDevMode && assertNumber(flags, 'Expecting flags');\n    const tView = getTView();\n    if (tView.firstCreatePass) {\n        const tNode = getCurrentTNode();\n        createTQuery(tView, new TQueryMetadata_(predicate, flags, read), tNode.index);\n        saveContentQueryAndDirectiveIndex(tView, directiveIndex);\n        if ((flags & 2 /* QueryFlags.isStatic */) === 2 /* QueryFlags.isStatic */) {\n            tView.staticContentQueries = true;\n        }\n    }\n    createLQuery(tView, getLView(), flags);\n}\n/**\n * Loads a QueryList corresponding to the current view or content query.\n *\n * @codeGenApi\n */\nfunction ɵɵloadQuery() {\n    return loadQueryInternal(getLView(), getCurrentQueryIndex());\n}\nfunction loadQueryInternal(lView, queryIndex) {\n    ngDevMode &&\n        assertDefined(lView[QUERIES], 'LQueries should be defined when trying to load a query');\n    ngDevMode && assertIndexInRange(lView[QUERIES].queries, queryIndex);\n    return lView[QUERIES].queries[queryIndex].queryList;\n}\nfunction createLQuery(tView, lView, flags) {\n    const queryList = new QueryList((flags & 4 /* QueryFlags.emitDistinctChangesOnly */) === 4 /* QueryFlags.emitDistinctChangesOnly */);\n    storeCleanupWithContext(tView, lView, queryList, queryList.destroy);\n    if (lView[QUERIES] === null)\n        lView[QUERIES] = new LQueries_();\n    lView[QUERIES].queries.push(new LQuery_(queryList));\n}\nfunction createTQuery(tView, metadata, nodeIndex) {\n    if (tView.queries === null)\n        tView.queries = new TQueries_();\n    tView.queries.track(new TQuery_(metadata, nodeIndex));\n}\nfunction saveContentQueryAndDirectiveIndex(tView, directiveIndex) {\n    const tViewContentQueries = tView.contentQueries || (tView.contentQueries = []);\n    const lastSavedDirectiveIndex = tViewContentQueries.length ? tViewContentQueries[tViewContentQueries.length - 1] : -1;\n    if (directiveIndex !== lastSavedDirectiveIndex) {\n        tViewContentQueries.push(tView.queries.length - 1, directiveIndex);\n    }\n}\nfunction getTQuery(tView, index) {\n    ngDevMode && assertDefined(tView.queries, 'TQueries must be defined to retrieve a TQuery');\n    return tView.queries.getByIndex(index);\n}\n\n/**\n * Retrieves `TemplateRef` instance from `Injector` when a local reference is placed on the\n * `<ng-template>` element.\n *\n * @codeGenApi\n */\nfunction ɵɵtemplateRefExtractor(tNode, lView) {\n    return createTemplateRef(tNode, lView);\n}\n\n/**\n * A mapping of the @angular/core API surface used in generated expressions to the actual symbols.\n *\n * This should be kept up to date with the public exports of @angular/core.\n */\nconst angularCoreEnv = (() => ({\n    'ɵɵattribute': ɵɵattribute,\n    'ɵɵattributeInterpolate1': ɵɵattributeInterpolate1,\n    'ɵɵattributeInterpolate2': ɵɵattributeInterpolate2,\n    'ɵɵattributeInterpolate3': ɵɵattributeInterpolate3,\n    'ɵɵattributeInterpolate4': ɵɵattributeInterpolate4,\n    'ɵɵattributeInterpolate5': ɵɵattributeInterpolate5,\n    'ɵɵattributeInterpolate6': ɵɵattributeInterpolate6,\n    'ɵɵattributeInterpolate7': ɵɵattributeInterpolate7,\n    'ɵɵattributeInterpolate8': ɵɵattributeInterpolate8,\n    'ɵɵattributeInterpolateV': ɵɵattributeInterpolateV,\n    'ɵɵdefineComponent': ɵɵdefineComponent,\n    'ɵɵdefineDirective': ɵɵdefineDirective,\n    'ɵɵdefineInjectable': ɵɵdefineInjectable,\n    'ɵɵdefineInjector': ɵɵdefineInjector,\n    'ɵɵdefineNgModule': ɵɵdefineNgModule,\n    'ɵɵdefinePipe': ɵɵdefinePipe,\n    'ɵɵdirectiveInject': ɵɵdirectiveInject,\n    'ɵɵgetInheritedFactory': ɵɵgetInheritedFactory,\n    'ɵɵinject': ɵɵinject,\n    'ɵɵinjectAttribute': ɵɵinjectAttribute,\n    'ɵɵinvalidFactory': ɵɵinvalidFactory,\n    'ɵɵinvalidFactoryDep': ɵɵinvalidFactoryDep,\n    'ɵɵtemplateRefExtractor': ɵɵtemplateRefExtractor,\n    'ɵɵresetView': ɵɵresetView,\n    'ɵɵHostDirectivesFeature': ɵɵHostDirectivesFeature,\n    'ɵɵNgOnChangesFeature': ɵɵNgOnChangesFeature,\n    'ɵɵProvidersFeature': ɵɵProvidersFeature,\n    'ɵɵCopyDefinitionFeature': ɵɵCopyDefinitionFeature,\n    'ɵɵInheritDefinitionFeature': ɵɵInheritDefinitionFeature,\n    'ɵɵStandaloneFeature': ɵɵStandaloneFeature,\n    'ɵɵnextContext': ɵɵnextContext,\n    'ɵɵnamespaceHTML': ɵɵnamespaceHTML,\n    'ɵɵnamespaceMathML': ɵɵnamespaceMathML,\n    'ɵɵnamespaceSVG': ɵɵnamespaceSVG,\n    'ɵɵenableBindings': ɵɵenableBindings,\n    'ɵɵdisableBindings': ɵɵdisableBindings,\n    'ɵɵelementStart': ɵɵelementStart,\n    'ɵɵelementEnd': ɵɵelementEnd,\n    'ɵɵelement': ɵɵelement,\n    'ɵɵelementContainerStart': ɵɵelementContainerStart,\n    'ɵɵelementContainerEnd': ɵɵelementContainerEnd,\n    'ɵɵelementContainer': ɵɵelementContainer,\n    'ɵɵpureFunction0': ɵɵpureFunction0,\n    'ɵɵpureFunction1': ɵɵpureFunction1,\n    'ɵɵpureFunction2': ɵɵpureFunction2,\n    'ɵɵpureFunction3': ɵɵpureFunction3,\n    'ɵɵpureFunction4': ɵɵpureFunction4,\n    'ɵɵpureFunction5': ɵɵpureFunction5,\n    'ɵɵpureFunction6': ɵɵpureFunction6,\n    'ɵɵpureFunction7': ɵɵpureFunction7,\n    'ɵɵpureFunction8': ɵɵpureFunction8,\n    'ɵɵpureFunctionV': ɵɵpureFunctionV,\n    'ɵɵgetCurrentView': ɵɵgetCurrentView,\n    'ɵɵrestoreView': ɵɵrestoreView,\n    'ɵɵlistener': ɵɵlistener,\n    'ɵɵprojection': ɵɵprojection,\n    'ɵɵsyntheticHostProperty': ɵɵsyntheticHostProperty,\n    'ɵɵsyntheticHostListener': ɵɵsyntheticHostListener,\n    'ɵɵpipeBind1': ɵɵpipeBind1,\n    'ɵɵpipeBind2': ɵɵpipeBind2,\n    'ɵɵpipeBind3': ɵɵpipeBind3,\n    'ɵɵpipeBind4': ɵɵpipeBind4,\n    'ɵɵpipeBindV': ɵɵpipeBindV,\n    'ɵɵprojectionDef': ɵɵprojectionDef,\n    'ɵɵhostProperty': ɵɵhostProperty,\n    'ɵɵproperty': ɵɵproperty,\n    'ɵɵpropertyInterpolate': ɵɵpropertyInterpolate,\n    'ɵɵpropertyInterpolate1': ɵɵpropertyInterpolate1,\n    'ɵɵpropertyInterpolate2': ɵɵpropertyInterpolate2,\n    'ɵɵpropertyInterpolate3': ɵɵpropertyInterpolate3,\n    'ɵɵpropertyInterpolate4': ɵɵpropertyInterpolate4,\n    'ɵɵpropertyInterpolate5': ɵɵpropertyInterpolate5,\n    'ɵɵpropertyInterpolate6': ɵɵpropertyInterpolate6,\n    'ɵɵpropertyInterpolate7': ɵɵpropertyInterpolate7,\n    'ɵɵpropertyInterpolate8': ɵɵpropertyInterpolate8,\n    'ɵɵpropertyInterpolateV': ɵɵpropertyInterpolateV,\n    'ɵɵpipe': ɵɵpipe,\n    'ɵɵqueryRefresh': ɵɵqueryRefresh,\n    'ɵɵviewQuery': ɵɵviewQuery,\n    'ɵɵloadQuery': ɵɵloadQuery,\n    'ɵɵcontentQuery': ɵɵcontentQuery,\n    'ɵɵreference': ɵɵreference,\n    'ɵɵclassMap': ɵɵclassMap,\n    'ɵɵclassMapInterpolate1': ɵɵclassMapInterpolate1,\n    'ɵɵclassMapInterpolate2': ɵɵclassMapInterpolate2,\n    'ɵɵclassMapInterpolate3': ɵɵclassMapInterpolate3,\n    'ɵɵclassMapInterpolate4': ɵɵclassMapInterpolate4,\n    'ɵɵclassMapInterpolate5': ɵɵclassMapInterpolate5,\n    'ɵɵclassMapInterpolate6': ɵɵclassMapInterpolate6,\n    'ɵɵclassMapInterpolate7': ɵɵclassMapInterpolate7,\n    'ɵɵclassMapInterpolate8': ɵɵclassMapInterpolate8,\n    'ɵɵclassMapInterpolateV': ɵɵclassMapInterpolateV,\n    'ɵɵstyleMap': ɵɵstyleMap,\n    'ɵɵstyleMapInterpolate1': ɵɵstyleMapInterpolate1,\n    'ɵɵstyleMapInterpolate2': ɵɵstyleMapInterpolate2,\n    'ɵɵstyleMapInterpolate3': ɵɵstyleMapInterpolate3,\n    'ɵɵstyleMapInterpolate4': ɵɵstyleMapInterpolate4,\n    'ɵɵstyleMapInterpolate5': ɵɵstyleMapInterpolate5,\n    'ɵɵstyleMapInterpolate6': ɵɵstyleMapInterpolate6,\n    'ɵɵstyleMapInterpolate7': ɵɵstyleMapInterpolate7,\n    'ɵɵstyleMapInterpolate8': ɵɵstyleMapInterpolate8,\n    'ɵɵstyleMapInterpolateV': ɵɵstyleMapInterpolateV,\n    'ɵɵstyleProp': ɵɵstyleProp,\n    'ɵɵstylePropInterpolate1': ɵɵstylePropInterpolate1,\n    'ɵɵstylePropInterpolate2': ɵɵstylePropInterpolate2,\n    'ɵɵstylePropInterpolate3': ɵɵstylePropInterpolate3,\n    'ɵɵstylePropInterpolate4': ɵɵstylePropInterpolate4,\n    'ɵɵstylePropInterpolate5': ɵɵstylePropInterpolate5,\n    'ɵɵstylePropInterpolate6': ɵɵstylePropInterpolate6,\n    'ɵɵstylePropInterpolate7': ɵɵstylePropInterpolate7,\n    'ɵɵstylePropInterpolate8': ɵɵstylePropInterpolate8,\n    'ɵɵstylePropInterpolateV': ɵɵstylePropInterpolateV,\n    'ɵɵclassProp': ɵɵclassProp,\n    'ɵɵadvance': ɵɵadvance,\n    'ɵɵtemplate': ɵɵtemplate,\n    'ɵɵtext': ɵɵtext,\n    'ɵɵtextInterpolate': ɵɵtextInterpolate,\n    'ɵɵtextInterpolate1': ɵɵtextInterpolate1,\n    'ɵɵtextInterpolate2': ɵɵtextInterpolate2,\n    'ɵɵtextInterpolate3': ɵɵtextInterpolate3,\n    'ɵɵtextInterpolate4': ɵɵtextInterpolate4,\n    'ɵɵtextInterpolate5': ɵɵtextInterpolate5,\n    'ɵɵtextInterpolate6': ɵɵtextInterpolate6,\n    'ɵɵtextInterpolate7': ɵɵtextInterpolate7,\n    'ɵɵtextInterpolate8': ɵɵtextInterpolate8,\n    'ɵɵtextInterpolateV': ɵɵtextInterpolateV,\n    'ɵɵi18n': ɵɵi18n,\n    'ɵɵi18nAttributes': ɵɵi18nAttributes,\n    'ɵɵi18nExp': ɵɵi18nExp,\n    'ɵɵi18nStart': ɵɵi18nStart,\n    'ɵɵi18nEnd': ɵɵi18nEnd,\n    'ɵɵi18nApply': ɵɵi18nApply,\n    'ɵɵi18nPostprocess': ɵɵi18nPostprocess,\n    'ɵɵresolveWindow': ɵɵresolveWindow,\n    'ɵɵresolveDocument': ɵɵresolveDocument,\n    'ɵɵresolveBody': ɵɵresolveBody,\n    'ɵɵsetComponentScope': ɵɵsetComponentScope,\n    'ɵɵsetNgModuleScope': ɵɵsetNgModuleScope,\n    'ɵɵregisterNgModuleType': registerNgModuleType,\n    'ɵɵsanitizeHtml': ɵɵsanitizeHtml,\n    'ɵɵsanitizeStyle': ɵɵsanitizeStyle,\n    'ɵɵsanitizeResourceUrl': ɵɵsanitizeResourceUrl,\n    'ɵɵsanitizeScript': ɵɵsanitizeScript,\n    'ɵɵsanitizeUrl': ɵɵsanitizeUrl,\n    'ɵɵsanitizeUrlOrResourceUrl': ɵɵsanitizeUrlOrResourceUrl,\n    'ɵɵtrustConstantHtml': ɵɵtrustConstantHtml,\n    'ɵɵtrustConstantResourceUrl': ɵɵtrustConstantResourceUrl,\n    'ɵɵvalidateIframeAttribute': ɵɵvalidateIframeAttribute,\n    'forwardRef': forwardRef,\n    'resolveForwardRef': resolveForwardRef,\n}))();\n\nlet jitOptions = null;\nfunction setJitOptions(options) {\n    if (jitOptions !== null) {\n        if (options.defaultEncapsulation !== jitOptions.defaultEncapsulation) {\n            ngDevMode &&\n                console.error('Provided value for `defaultEncapsulation` can not be changed once it has been set.');\n            return;\n        }\n        if (options.preserveWhitespaces !== jitOptions.preserveWhitespaces) {\n            ngDevMode &&\n                console.error('Provided value for `preserveWhitespaces` can not be changed once it has been set.');\n            return;\n        }\n    }\n    jitOptions = options;\n}\nfunction getJitOptions() {\n    return jitOptions;\n}\nfunction resetJitOptions() {\n    jitOptions = null;\n}\n\nfunction patchModuleCompilation() {\n    // Does nothing, but exists as a target for patching.\n}\n\nfunction isModuleWithProviders(value) {\n    return value.ngModule !== undefined;\n}\nfunction isNgModule(value) {\n    return !!getNgModuleDef(value);\n}\n\nconst moduleQueue = [];\n/**\n * Enqueues moduleDef to be checked later to see if scope can be set on its\n * component declarations.\n */\nfunction enqueueModuleForDelayedScoping(moduleType, ngModule) {\n    moduleQueue.push({ moduleType, ngModule });\n}\nlet flushingModuleQueue = false;\n/**\n * Loops over queued module definitions, if a given module definition has all of its\n * declarations resolved, it dequeues that module definition and sets the scope on\n * its declarations.\n */\nfunction flushModuleScopingQueueAsMuchAsPossible() {\n    if (!flushingModuleQueue) {\n        flushingModuleQueue = true;\n        try {\n            for (let i = moduleQueue.length - 1; i >= 0; i--) {\n                const { moduleType, ngModule } = moduleQueue[i];\n                if (ngModule.declarations && ngModule.declarations.every(isResolvedDeclaration)) {\n                    // dequeue\n                    moduleQueue.splice(i, 1);\n                    setScopeOnDeclaredComponents(moduleType, ngModule);\n                }\n            }\n        }\n        finally {\n            flushingModuleQueue = false;\n        }\n    }\n}\n/**\n * Returns truthy if a declaration has resolved. If the declaration happens to be\n * an array of declarations, it will recurse to check each declaration in that array\n * (which may also be arrays).\n */\nfunction isResolvedDeclaration(declaration) {\n    if (Array.isArray(declaration)) {\n        return declaration.every(isResolvedDeclaration);\n    }\n    return !!resolveForwardRef(declaration);\n}\n/**\n * Compiles a module in JIT mode.\n *\n * This function automatically gets called when a class has a `@NgModule` decorator.\n */\nfunction compileNgModule(moduleType, ngModule = {}) {\n    patchModuleCompilation();\n    compileNgModuleDefs(moduleType, ngModule);\n    if (ngModule.id !== undefined) {\n        registerNgModuleType(moduleType, ngModule.id);\n    }\n    // Because we don't know if all declarations have resolved yet at the moment the\n    // NgModule decorator is executing, we're enqueueing the setting of module scope\n    // on its declarations to be run at a later time when all declarations for the module,\n    // including forward refs, have resolved.\n    enqueueModuleForDelayedScoping(moduleType, ngModule);\n}\n/**\n * Compiles and adds the `ɵmod`, `ɵfac` and `ɵinj` properties to the module class.\n *\n * It's possible to compile a module via this API which will allow duplicate declarations in its\n * root.\n */\nfunction compileNgModuleDefs(moduleType, ngModule, allowDuplicateDeclarationsInRoot = false) {\n    ngDevMode && assertDefined(moduleType, 'Required value moduleType');\n    ngDevMode && assertDefined(ngModule, 'Required value ngModule');\n    const declarations = flatten(ngModule.declarations || EMPTY_ARRAY);\n    let ngModuleDef = null;\n    Object.defineProperty(moduleType, NG_MOD_DEF, {\n        configurable: true,\n        get: () => {\n            if (ngModuleDef === null) {\n                if (ngDevMode && ngModule.imports && ngModule.imports.indexOf(moduleType) > -1) {\n                    // We need to assert this immediately, because allowing it to continue will cause it to\n                    // go into an infinite loop before we've reached the point where we throw all the errors.\n                    throw new Error(`'${stringifyForError(moduleType)}' module can't import itself`);\n                }\n                const compiler = getCompilerFacade({ usage: 0 /* JitCompilerUsage.Decorator */, kind: 'NgModule', type: moduleType });\n                ngModuleDef = compiler.compileNgModule(angularCoreEnv, `ng:///${moduleType.name}/ɵmod.js`, {\n                    type: moduleType,\n                    bootstrap: flatten(ngModule.bootstrap || EMPTY_ARRAY).map(resolveForwardRef),\n                    declarations: declarations.map(resolveForwardRef),\n                    imports: flatten(ngModule.imports || EMPTY_ARRAY)\n                        .map(resolveForwardRef)\n                        .map(expandModuleWithProviders),\n                    exports: flatten(ngModule.exports || EMPTY_ARRAY)\n                        .map(resolveForwardRef)\n                        .map(expandModuleWithProviders),\n                    schemas: ngModule.schemas ? flatten(ngModule.schemas) : null,\n                    id: ngModule.id || null,\n                });\n                // Set `schemas` on ngModuleDef to an empty array in JIT mode to indicate that runtime\n                // should verify that there are no unknown elements in a template. In AOT mode, that check\n                // happens at compile time and `schemas` information is not present on Component and Module\n                // defs after compilation (so the check doesn't happen the second time at runtime).\n                if (!ngModuleDef.schemas) {\n                    ngModuleDef.schemas = [];\n                }\n            }\n            return ngModuleDef;\n        }\n    });\n    let ngFactoryDef = null;\n    Object.defineProperty(moduleType, NG_FACTORY_DEF, {\n        get: () => {\n            if (ngFactoryDef === null) {\n                const compiler = getCompilerFacade({ usage: 0 /* JitCompilerUsage.Decorator */, kind: 'NgModule', type: moduleType });\n                ngFactoryDef = compiler.compileFactory(angularCoreEnv, `ng:///${moduleType.name}/ɵfac.js`, {\n                    name: moduleType.name,\n                    type: moduleType,\n                    deps: reflectDependencies(moduleType),\n                    target: compiler.FactoryTarget.NgModule,\n                    typeArgumentCount: 0,\n                });\n            }\n            return ngFactoryDef;\n        },\n        // Make the property configurable in dev mode to allow overriding in tests\n        configurable: !!ngDevMode,\n    });\n    let ngInjectorDef = null;\n    Object.defineProperty(moduleType, NG_INJ_DEF, {\n        get: () => {\n            if (ngInjectorDef === null) {\n                ngDevMode && verifySemanticsOfNgModuleDef(moduleType, allowDuplicateDeclarationsInRoot);\n                const meta = {\n                    name: moduleType.name,\n                    type: moduleType,\n                    providers: ngModule.providers || EMPTY_ARRAY,\n                    imports: [\n                        (ngModule.imports || EMPTY_ARRAY).map(resolveForwardRef),\n                        (ngModule.exports || EMPTY_ARRAY).map(resolveForwardRef),\n                    ],\n                };\n                const compiler = getCompilerFacade({ usage: 0 /* JitCompilerUsage.Decorator */, kind: 'NgModule', type: moduleType });\n                ngInjectorDef =\n                    compiler.compileInjector(angularCoreEnv, `ng:///${moduleType.name}/ɵinj.js`, meta);\n            }\n            return ngInjectorDef;\n        },\n        // Make the property configurable in dev mode to allow overriding in tests\n        configurable: !!ngDevMode,\n    });\n}\nfunction generateStandaloneInDeclarationsError(type, location) {\n    const prefix = `Unexpected \"${stringifyForError(type)}\" found in the \"declarations\" array of the`;\n    const suffix = `\"${stringifyForError(type)}\" is marked as standalone and can't be declared ` +\n        'in any NgModule - did you intend to import it instead (by adding it to the \"imports\" array)?';\n    return `${prefix} ${location}, ${suffix}`;\n}\nfunction verifySemanticsOfNgModuleDef(moduleType, allowDuplicateDeclarationsInRoot, importingModule) {\n    if (verifiedNgModule.get(moduleType))\n        return;\n    // skip verifications of standalone components, directives, and pipes\n    if (isStandalone(moduleType))\n        return;\n    verifiedNgModule.set(moduleType, true);\n    moduleType = resolveForwardRef(moduleType);\n    let ngModuleDef;\n    if (importingModule) {\n        ngModuleDef = getNgModuleDef(moduleType);\n        if (!ngModuleDef) {\n            throw new Error(`Unexpected value '${moduleType.name}' imported by the module '${importingModule.name}'. Please add an @NgModule annotation.`);\n        }\n    }\n    else {\n        ngModuleDef = getNgModuleDef(moduleType, true);\n    }\n    const errors = [];\n    const declarations = maybeUnwrapFn(ngModuleDef.declarations);\n    const imports = maybeUnwrapFn(ngModuleDef.imports);\n    flatten(imports).map(unwrapModuleWithProvidersImports).forEach(modOrStandaloneCmpt => {\n        verifySemanticsOfNgModuleImport(modOrStandaloneCmpt, moduleType);\n        verifySemanticsOfNgModuleDef(modOrStandaloneCmpt, false, moduleType);\n    });\n    const exports = maybeUnwrapFn(ngModuleDef.exports);\n    declarations.forEach(verifyDeclarationsHaveDefinitions);\n    declarations.forEach(verifyDirectivesHaveSelector);\n    declarations.forEach((declarationType) => verifyNotStandalone(declarationType, moduleType));\n    const combinedDeclarations = [\n        ...declarations.map(resolveForwardRef),\n        ...flatten(imports.map(computeCombinedExports)).map(resolveForwardRef),\n    ];\n    exports.forEach(verifyExportsAreDeclaredOrReExported);\n    declarations.forEach(decl => verifyDeclarationIsUnique(decl, allowDuplicateDeclarationsInRoot));\n    declarations.forEach(verifyComponentEntryComponentsIsPartOfNgModule);\n    const ngModule = getAnnotation(moduleType, 'NgModule');\n    if (ngModule) {\n        ngModule.imports &&\n            flatten(ngModule.imports).map(unwrapModuleWithProvidersImports).forEach(mod => {\n                verifySemanticsOfNgModuleImport(mod, moduleType);\n                verifySemanticsOfNgModuleDef(mod, false, moduleType);\n            });\n        ngModule.bootstrap && deepForEach(ngModule.bootstrap, verifyCorrectBootstrapType);\n        ngModule.bootstrap && deepForEach(ngModule.bootstrap, verifyComponentIsPartOfNgModule);\n        ngModule.entryComponents &&\n            deepForEach(ngModule.entryComponents, verifyComponentIsPartOfNgModule);\n    }\n    // Throw Error if any errors were detected.\n    if (errors.length) {\n        throw new Error(errors.join('\\n'));\n    }\n    ////////////////////////////////////////////////////////////////////////////////////////////////\n    function verifyDeclarationsHaveDefinitions(type) {\n        type = resolveForwardRef(type);\n        const def = getComponentDef(type) || getDirectiveDef(type) || getPipeDef$1(type);\n        if (!def) {\n            errors.push(`Unexpected value '${stringifyForError(type)}' declared by the module '${stringifyForError(moduleType)}'. Please add a @Pipe/@Directive/@Component annotation.`);\n        }\n    }\n    function verifyDirectivesHaveSelector(type) {\n        type = resolveForwardRef(type);\n        const def = getDirectiveDef(type);\n        if (!getComponentDef(type) && def && def.selectors.length == 0) {\n            errors.push(`Directive ${stringifyForError(type)} has no selector, please add it!`);\n        }\n    }\n    function verifyNotStandalone(type, moduleType) {\n        type = resolveForwardRef(type);\n        const def = getComponentDef(type) || getDirectiveDef(type) || getPipeDef$1(type);\n        if (def?.standalone) {\n            const location = `\"${stringifyForError(moduleType)}\" NgModule`;\n            errors.push(generateStandaloneInDeclarationsError(type, location));\n        }\n    }\n    function verifyExportsAreDeclaredOrReExported(type) {\n        type = resolveForwardRef(type);\n        const kind = getComponentDef(type) && 'component' || getDirectiveDef(type) && 'directive' ||\n            getPipeDef$1(type) && 'pipe';\n        if (kind) {\n            // only checked if we are declared as Component, Directive, or Pipe\n            // Modules don't need to be declared or imported.\n            if (combinedDeclarations.lastIndexOf(type) === -1) {\n                // We are exporting something which we don't explicitly declare or import.\n                errors.push(`Can't export ${kind} ${stringifyForError(type)} from ${stringifyForError(moduleType)} as it was neither declared nor imported!`);\n            }\n        }\n    }\n    function verifyDeclarationIsUnique(type, suppressErrors) {\n        type = resolveForwardRef(type);\n        const existingModule = ownerNgModule.get(type);\n        if (existingModule && existingModule !== moduleType) {\n            if (!suppressErrors) {\n                const modules = [existingModule, moduleType].map(stringifyForError).sort();\n                errors.push(`Type ${stringifyForError(type)} is part of the declarations of 2 modules: ${modules[0]} and ${modules[1]}! ` +\n                    `Please consider moving ${stringifyForError(type)} to a higher module that imports ${modules[0]} and ${modules[1]}. ` +\n                    `You can also create a new NgModule that exports and includes ${stringifyForError(type)} then import that NgModule in ${modules[0]} and ${modules[1]}.`);\n            }\n        }\n        else {\n            // Mark type as having owner.\n            ownerNgModule.set(type, moduleType);\n        }\n    }\n    function verifyComponentIsPartOfNgModule(type) {\n        type = resolveForwardRef(type);\n        const existingModule = ownerNgModule.get(type);\n        if (!existingModule && !isStandalone(type)) {\n            errors.push(`Component ${stringifyForError(type)} is not part of any NgModule or the module has not been imported into your module.`);\n        }\n    }\n    function verifyCorrectBootstrapType(type) {\n        type = resolveForwardRef(type);\n        if (!getComponentDef(type)) {\n            errors.push(`${stringifyForError(type)} cannot be used as an entry component.`);\n        }\n        if (isStandalone(type)) {\n            // Note: this error should be the same as the\n            // `NGMODULE_BOOTSTRAP_IS_STANDALONE` one in AOT compiler.\n            errors.push(`The \\`${stringifyForError(type)}\\` class is a standalone component, which can ` +\n                `not be used in the \\`@NgModule.bootstrap\\` array. Use the \\`bootstrapApplication\\` ` +\n                `function for bootstrap instead.`);\n        }\n    }\n    function verifyComponentEntryComponentsIsPartOfNgModule(type) {\n        type = resolveForwardRef(type);\n        if (getComponentDef(type)) {\n            // We know we are component\n            const component = getAnnotation(type, 'Component');\n            if (component && component.entryComponents) {\n                deepForEach(component.entryComponents, verifyComponentIsPartOfNgModule);\n            }\n        }\n    }\n    function verifySemanticsOfNgModuleImport(type, importingModule) {\n        type = resolveForwardRef(type);\n        const directiveDef = getComponentDef(type) || getDirectiveDef(type);\n        if (directiveDef !== null && !directiveDef.standalone) {\n            throw new Error(`Unexpected directive '${type.name}' imported by the module '${importingModule.name}'. Please add an @NgModule annotation.`);\n        }\n        const pipeDef = getPipeDef$1(type);\n        if (pipeDef !== null && !pipeDef.standalone) {\n            throw new Error(`Unexpected pipe '${type.name}' imported by the module '${importingModule.name}'. Please add an @NgModule annotation.`);\n        }\n    }\n}\nfunction unwrapModuleWithProvidersImports(typeOrWithProviders) {\n    typeOrWithProviders = resolveForwardRef(typeOrWithProviders);\n    return typeOrWithProviders.ngModule || typeOrWithProviders;\n}\nfunction getAnnotation(type, name) {\n    let annotation = null;\n    collect(type.__annotations__);\n    collect(type.decorators);\n    return annotation;\n    function collect(annotations) {\n        if (annotations) {\n            annotations.forEach(readAnnotation);\n        }\n    }\n    function readAnnotation(decorator) {\n        if (!annotation) {\n            const proto = Object.getPrototypeOf(decorator);\n            if (proto.ngMetadataName == name) {\n                annotation = decorator;\n            }\n            else if (decorator.type) {\n                const proto = Object.getPrototypeOf(decorator.type);\n                if (proto.ngMetadataName == name) {\n                    annotation = decorator.args[0];\n                }\n            }\n        }\n    }\n}\n/**\n * Keep track of compiled components. This is needed because in tests we often want to compile the\n * same component with more than one NgModule. This would cause an error unless we reset which\n * NgModule the component belongs to. We keep the list of compiled components here so that the\n * TestBed can reset it later.\n */\nlet ownerNgModule = new WeakMap();\nlet verifiedNgModule = new WeakMap();\nfunction resetCompiledComponents() {\n    ownerNgModule = new WeakMap();\n    verifiedNgModule = new WeakMap();\n    moduleQueue.length = 0;\n}\n/**\n * Computes the combined declarations of explicit declarations, as well as declarations inherited by\n * traversing the exports of imported modules.\n * @param type\n */\nfunction computeCombinedExports(type) {\n    type = resolveForwardRef(type);\n    const ngModuleDef = getNgModuleDef(type);\n    // a standalone component, directive or pipe\n    if (ngModuleDef === null) {\n        return [type];\n    }\n    return [...flatten(maybeUnwrapFn(ngModuleDef.exports).map((type) => {\n            const ngModuleDef = getNgModuleDef(type);\n            if (ngModuleDef) {\n                verifySemanticsOfNgModuleDef(type, false);\n                return computeCombinedExports(type);\n            }\n            else {\n                return type;\n            }\n        }))];\n}\n/**\n * Some declared components may be compiled asynchronously, and thus may not have their\n * ɵcmp set yet. If this is the case, then a reference to the module is written into\n * the `ngSelectorScope` property of the declared type.\n */\nfunction setScopeOnDeclaredComponents(moduleType, ngModule) {\n    const declarations = flatten(ngModule.declarations || EMPTY_ARRAY);\n    const transitiveScopes = transitiveScopesFor(moduleType);\n    declarations.forEach(declaration => {\n        declaration = resolveForwardRef(declaration);\n        if (declaration.hasOwnProperty(NG_COMP_DEF)) {\n            // A `ɵcmp` field exists - go ahead and patch the component directly.\n            const component = declaration;\n            const componentDef = getComponentDef(component);\n            patchComponentDefWithScope(componentDef, transitiveScopes);\n        }\n        else if (!declaration.hasOwnProperty(NG_DIR_DEF) && !declaration.hasOwnProperty(NG_PIPE_DEF)) {\n            // Set `ngSelectorScope` for future reference when the component compilation finishes.\n            declaration.ngSelectorScope = moduleType;\n        }\n    });\n}\n/**\n * Patch the definition of a component with directives and pipes from the compilation scope of\n * a given module.\n */\nfunction patchComponentDefWithScope(componentDef, transitiveScopes) {\n    componentDef.directiveDefs = () => Array.from(transitiveScopes.compilation.directives)\n        .map(dir => dir.hasOwnProperty(NG_COMP_DEF) ? getComponentDef(dir) : getDirectiveDef(dir))\n        .filter(def => !!def);\n    componentDef.pipeDefs = () => Array.from(transitiveScopes.compilation.pipes).map(pipe => getPipeDef$1(pipe));\n    componentDef.schemas = transitiveScopes.schemas;\n    // Since we avoid Components/Directives/Pipes recompiling in case there are no overrides, we\n    // may face a problem where previously compiled defs available to a given Component/Directive\n    // are cached in TView and may become stale (in case any of these defs gets recompiled). In\n    // order to avoid this problem, we force fresh TView to be created.\n    componentDef.tView = null;\n}\n/**\n * Compute the pair of transitive scopes (compilation scope and exported scope) for a given type\n * (either a NgModule or a standalone component / directive / pipe).\n */\nfunction transitiveScopesFor(type) {\n    if (isNgModule(type)) {\n        return transitiveScopesForNgModule(type);\n    }\n    else if (isStandalone(type)) {\n        const directiveDef = getComponentDef(type) || getDirectiveDef(type);\n        if (directiveDef !== null) {\n            return {\n                schemas: null,\n                compilation: {\n                    directives: new Set(),\n                    pipes: new Set(),\n                },\n                exported: {\n                    directives: new Set([type]),\n                    pipes: new Set(),\n                },\n            };\n        }\n        const pipeDef = getPipeDef$1(type);\n        if (pipeDef !== null) {\n            return {\n                schemas: null,\n                compilation: {\n                    directives: new Set(),\n                    pipes: new Set(),\n                },\n                exported: {\n                    directives: new Set(),\n                    pipes: new Set([type]),\n                },\n            };\n        }\n    }\n    // TODO: change the error message to be more user-facing and take standalone into account\n    throw new Error(`${type.name} does not have a module def (ɵmod property)`);\n}\n/**\n * Compute the pair of transitive scopes (compilation scope and exported scope) for a given module.\n *\n * This operation is memoized and the result is cached on the module's definition. This function can\n * be called on modules with components that have not fully compiled yet, but the result should not\n * be used until they have.\n *\n * @param moduleType module that transitive scope should be calculated for.\n */\nfunction transitiveScopesForNgModule(moduleType) {\n    const def = getNgModuleDef(moduleType, true);\n    if (def.transitiveCompileScopes !== null) {\n        return def.transitiveCompileScopes;\n    }\n    const scopes = {\n        schemas: def.schemas || null,\n        compilation: {\n            directives: new Set(),\n            pipes: new Set(),\n        },\n        exported: {\n            directives: new Set(),\n            pipes: new Set(),\n        },\n    };\n    maybeUnwrapFn(def.imports).forEach((imported) => {\n        // When this module imports another, the imported module's exported directives and pipes are\n        // added to the compilation scope of this module.\n        const importedScope = transitiveScopesFor(imported);\n        importedScope.exported.directives.forEach(entry => scopes.compilation.directives.add(entry));\n        importedScope.exported.pipes.forEach(entry => scopes.compilation.pipes.add(entry));\n    });\n    maybeUnwrapFn(def.declarations).forEach(declared => {\n        const declaredWithDefs = declared;\n        if (getPipeDef$1(declaredWithDefs)) {\n            scopes.compilation.pipes.add(declared);\n        }\n        else {\n            // Either declared has a ɵcmp or ɵdir, or it's a component which hasn't\n            // had its template compiled yet. In either case, it gets added to the compilation's\n            // directives.\n            scopes.compilation.directives.add(declared);\n        }\n    });\n    maybeUnwrapFn(def.exports).forEach((exported) => {\n        const exportedType = exported;\n        // Either the type is a module, a pipe, or a component/directive (which may not have a\n        // ɵcmp as it might be compiled asynchronously).\n        if (isNgModule(exportedType)) {\n            // When this module exports another, the exported module's exported directives and pipes are\n            // added to both the compilation and exported scopes of this module.\n            const exportedScope = transitiveScopesFor(exportedType);\n            exportedScope.exported.directives.forEach(entry => {\n                scopes.compilation.directives.add(entry);\n                scopes.exported.directives.add(entry);\n            });\n            exportedScope.exported.pipes.forEach(entry => {\n                scopes.compilation.pipes.add(entry);\n                scopes.exported.pipes.add(entry);\n            });\n        }\n        else if (getPipeDef$1(exportedType)) {\n            scopes.exported.pipes.add(exportedType);\n        }\n        else {\n            scopes.exported.directives.add(exportedType);\n        }\n    });\n    def.transitiveCompileScopes = scopes;\n    return scopes;\n}\nfunction expandModuleWithProviders(value) {\n    if (isModuleWithProviders(value)) {\n        return value.ngModule;\n    }\n    return value;\n}\n\n/**\n * Keep track of the compilation depth to avoid reentrancy issues during JIT compilation. This\n * matters in the following scenario:\n *\n * Consider a component 'A' that extends component 'B', both declared in module 'M'. During\n * the compilation of 'A' the definition of 'B' is requested to capture the inheritance chain,\n * potentially triggering compilation of 'B'. If this nested compilation were to trigger\n * `flushModuleScopingQueueAsMuchAsPossible` it may happen that module 'M' is still pending in the\n * queue, resulting in 'A' and 'B' to be patched with the NgModule scope. As the compilation of\n * 'A' is still in progress, this would introduce a circular dependency on its compilation. To avoid\n * this issue, the module scope queue is only flushed for compilations at the depth 0, to ensure\n * all compilations have finished.\n */\nlet compilationDepth = 0;\n/**\n * Compile an Angular component according to its decorator metadata, and patch the resulting\n * component def (ɵcmp) onto the component type.\n *\n * Compilation may be asynchronous (due to the need to resolve URLs for the component template or\n * other resources, for example). In the event that compilation is not immediate, `compileComponent`\n * will enqueue resource resolution into a global queue and will fail to return the `ɵcmp`\n * until the global queue has been resolved with a call to `resolveComponentResources`.\n */\nfunction compileComponent(type, metadata) {\n    // Initialize ngDevMode. This must be the first statement in compileComponent.\n    // See the `initNgDevMode` docstring for more information.\n    (typeof ngDevMode === 'undefined' || ngDevMode) && initNgDevMode();\n    let ngComponentDef = null;\n    // Metadata may have resources which need to be resolved.\n    maybeQueueResolutionOfComponentResources(type, metadata);\n    // Note that we're using the same function as `Directive`, because that's only subset of metadata\n    // that we need to create the ngFactoryDef. We're avoiding using the component metadata\n    // because we'd have to resolve the asynchronous templates.\n    addDirectiveFactoryDef(type, metadata);\n    Object.defineProperty(type, NG_COMP_DEF, {\n        get: () => {\n            if (ngComponentDef === null) {\n                const compiler = getCompilerFacade({ usage: 0 /* JitCompilerUsage.Decorator */, kind: 'component', type: type });\n                if (componentNeedsResolution(metadata)) {\n                    const error = [`Component '${type.name}' is not resolved:`];\n                    if (metadata.templateUrl) {\n                        error.push(` - templateUrl: ${metadata.templateUrl}`);\n                    }\n                    if (metadata.styleUrls && metadata.styleUrls.length) {\n                        error.push(` - styleUrls: ${JSON.stringify(metadata.styleUrls)}`);\n                    }\n                    error.push(`Did you run and wait for 'resolveComponentResources()'?`);\n                    throw new Error(error.join('\\n'));\n                }\n                // This const was called `jitOptions` previously but had to be renamed to `options` because\n                // of a bug with Terser that caused optimized JIT builds to throw a `ReferenceError`.\n                // This bug was investigated in https://github.com/angular/angular-cli/issues/17264.\n                // We should not rename it back until https://github.com/terser/terser/issues/615 is fixed.\n                const options = getJitOptions();\n                let preserveWhitespaces = metadata.preserveWhitespaces;\n                if (preserveWhitespaces === undefined) {\n                    if (options !== null && options.preserveWhitespaces !== undefined) {\n                        preserveWhitespaces = options.preserveWhitespaces;\n                    }\n                    else {\n                        preserveWhitespaces = false;\n                    }\n                }\n                let encapsulation = metadata.encapsulation;\n                if (encapsulation === undefined) {\n                    if (options !== null && options.defaultEncapsulation !== undefined) {\n                        encapsulation = options.defaultEncapsulation;\n                    }\n                    else {\n                        encapsulation = ViewEncapsulation$1.Emulated;\n                    }\n                }\n                const templateUrl = metadata.templateUrl || `ng:///${type.name}/template.html`;\n                const meta = {\n                    ...directiveMetadata(type, metadata),\n                    typeSourceSpan: compiler.createParseSourceSpan('Component', type.name, templateUrl),\n                    template: metadata.template || '',\n                    preserveWhitespaces,\n                    styles: metadata.styles || EMPTY_ARRAY,\n                    animations: metadata.animations,\n                    // JIT components are always compiled against an empty set of `declarations`. Instead, the\n                    // `directiveDefs` and `pipeDefs` are updated at a later point:\n                    //  * for NgModule-based components, they're set when the NgModule which declares the\n                    //    component resolves in the module scoping queue\n                    //  * for standalone components, they're set just below, after `compileComponent`.\n                    declarations: [],\n                    changeDetection: metadata.changeDetection,\n                    encapsulation,\n                    interpolation: metadata.interpolation,\n                    viewProviders: metadata.viewProviders || null,\n                };\n                compilationDepth++;\n                try {\n                    if (meta.usesInheritance) {\n                        addDirectiveDefToUndecoratedParents(type);\n                    }\n                    ngComponentDef =\n                        compiler.compileComponent(angularCoreEnv, templateUrl, meta);\n                    if (metadata.standalone) {\n                        // Patch the component definition for standalone components with `directiveDefs` and\n                        // `pipeDefs` functions which lazily compute the directives/pipes available in the\n                        // standalone component. Also set `dependencies` to the lazily resolved list of imports.\n                        const imports = flatten(metadata.imports || EMPTY_ARRAY);\n                        const { directiveDefs, pipeDefs } = getStandaloneDefFunctions(type, imports);\n                        ngComponentDef.directiveDefs = directiveDefs;\n                        ngComponentDef.pipeDefs = pipeDefs;\n                        ngComponentDef.dependencies = () => imports.map(resolveForwardRef);\n                    }\n                }\n                finally {\n                    // Ensure that the compilation depth is decremented even when the compilation failed.\n                    compilationDepth--;\n                }\n                if (compilationDepth === 0) {\n                    // When NgModule decorator executed, we enqueued the module definition such that\n                    // it would only dequeue and add itself as module scope to all of its declarations,\n                    // but only if  if all of its declarations had resolved. This call runs the check\n                    // to see if any modules that are in the queue can be dequeued and add scope to\n                    // their declarations.\n                    flushModuleScopingQueueAsMuchAsPossible();\n                }\n                // If component compilation is async, then the @NgModule annotation which declares the\n                // component may execute and set an ngSelectorScope property on the component type. This\n                // allows the component to patch itself with directiveDefs from the module after it\n                // finishes compiling.\n                if (hasSelectorScope(type)) {\n                    const scopes = transitiveScopesFor(type.ngSelectorScope);\n                    patchComponentDefWithScope(ngComponentDef, scopes);\n                }\n                if (metadata.schemas) {\n                    if (metadata.standalone) {\n                        ngComponentDef.schemas = metadata.schemas;\n                    }\n                    else {\n                        throw new Error(`The 'schemas' was specified for the ${stringifyForError(type)} but is only valid on a component that is standalone.`);\n                    }\n                }\n                else if (metadata.standalone) {\n                    ngComponentDef.schemas = [];\n                }\n            }\n            return ngComponentDef;\n        },\n        // Make the property configurable in dev mode to allow overriding in tests\n        configurable: !!ngDevMode,\n    });\n}\nfunction getDependencyTypeForError(type) {\n    if (getComponentDef(type))\n        return 'component';\n    if (getDirectiveDef(type))\n        return 'directive';\n    if (getPipeDef$1(type))\n        return 'pipe';\n    return 'type';\n}\nfunction verifyStandaloneImport(depType, importingType) {\n    if (isForwardRef(depType)) {\n        depType = resolveForwardRef(depType);\n        if (!depType) {\n            throw new Error(`Expected forwardRef function, imported from \"${stringifyForError(importingType)}\", to return a standalone entity or NgModule but got \"${stringifyForError(depType) || depType}\".`);\n        }\n    }\n    if (getNgModuleDef(depType) == null) {\n        const def = getComponentDef(depType) || getDirectiveDef(depType) || getPipeDef$1(depType);\n        if (def != null) {\n            // if a component, directive or pipe is imported make sure that it is standalone\n            if (!def.standalone) {\n                throw new Error(`The \"${stringifyForError(depType)}\" ${getDependencyTypeForError(depType)}, imported from \"${stringifyForError(importingType)}\", is not standalone. Did you forget to add the standalone: true flag?`);\n            }\n        }\n        else {\n            // it can be either a module with provider or an unknown (not annotated) type\n            if (isModuleWithProviders(depType)) {\n                throw new Error(`A module with providers was imported from \"${stringifyForError(importingType)}\". Modules with providers are not supported in standalone components imports.`);\n            }\n            else {\n                throw new Error(`The \"${stringifyForError(depType)}\" type, imported from \"${stringifyForError(importingType)}\", must be a standalone component / directive / pipe or an NgModule. Did you forget to add the required @Component / @Directive / @Pipe or @NgModule annotation?`);\n            }\n        }\n    }\n}\n/**\n * Build memoized `directiveDefs` and `pipeDefs` functions for the component definition of a\n * standalone component, which process `imports` and filter out directives and pipes. The use of\n * memoized functions here allows for the delayed resolution of any `forwardRef`s present in the\n * component's `imports`.\n */\nfunction getStandaloneDefFunctions(type, imports) {\n    let cachedDirectiveDefs = null;\n    let cachedPipeDefs = null;\n    const directiveDefs = () => {\n        if (cachedDirectiveDefs === null) {\n            // Standalone components are always able to self-reference, so include the component's own\n            // definition in its `directiveDefs`.\n            cachedDirectiveDefs = [getComponentDef(type)];\n            const seen = new Set();\n            for (const rawDep of imports) {\n                ngDevMode && verifyStandaloneImport(rawDep, type);\n                const dep = resolveForwardRef(rawDep);\n                if (seen.has(dep)) {\n                    continue;\n                }\n                seen.add(dep);\n                if (!!getNgModuleDef(dep)) {\n                    const scope = transitiveScopesFor(dep);\n                    for (const dir of scope.exported.directives) {\n                        const def = getComponentDef(dir) || getDirectiveDef(dir);\n                        if (def && !seen.has(dir)) {\n                            seen.add(dir);\n                            cachedDirectiveDefs.push(def);\n                        }\n                    }\n                }\n                else {\n                    const def = getComponentDef(dep) || getDirectiveDef(dep);\n                    if (def) {\n                        cachedDirectiveDefs.push(def);\n                    }\n                }\n            }\n        }\n        return cachedDirectiveDefs;\n    };\n    const pipeDefs = () => {\n        if (cachedPipeDefs === null) {\n            cachedPipeDefs = [];\n            const seen = new Set();\n            for (const rawDep of imports) {\n                const dep = resolveForwardRef(rawDep);\n                if (seen.has(dep)) {\n                    continue;\n                }\n                seen.add(dep);\n                if (!!getNgModuleDef(dep)) {\n                    const scope = transitiveScopesFor(dep);\n                    for (const pipe of scope.exported.pipes) {\n                        const def = getPipeDef$1(pipe);\n                        if (def && !seen.has(pipe)) {\n                            seen.add(pipe);\n                            cachedPipeDefs.push(def);\n                        }\n                    }\n                }\n                else {\n                    const def = getPipeDef$1(dep);\n                    if (def) {\n                        cachedPipeDefs.push(def);\n                    }\n                }\n            }\n        }\n        return cachedPipeDefs;\n    };\n    return {\n        directiveDefs,\n        pipeDefs,\n    };\n}\nfunction hasSelectorScope(component) {\n    return component.ngSelectorScope !== undefined;\n}\n/**\n * Compile an Angular directive according to its decorator metadata, and patch the resulting\n * directive def onto the component type.\n *\n * In the event that compilation is not immediate, `compileDirective` will return a `Promise` which\n * will resolve when compilation completes and the directive becomes usable.\n */\nfunction compileDirective(type, directive) {\n    let ngDirectiveDef = null;\n    addDirectiveFactoryDef(type, directive || {});\n    Object.defineProperty(type, NG_DIR_DEF, {\n        get: () => {\n            if (ngDirectiveDef === null) {\n                // `directive` can be null in the case of abstract directives as a base class\n                // that use `@Directive()` with no selector. In that case, pass empty object to the\n                // `directiveMetadata` function instead of null.\n                const meta = getDirectiveMetadata(type, directive || {});\n                const compiler = getCompilerFacade({ usage: 0 /* JitCompilerUsage.Decorator */, kind: 'directive', type });\n                ngDirectiveDef =\n                    compiler.compileDirective(angularCoreEnv, meta.sourceMapUrl, meta.metadata);\n            }\n            return ngDirectiveDef;\n        },\n        // Make the property configurable in dev mode to allow overriding in tests\n        configurable: !!ngDevMode,\n    });\n}\nfunction getDirectiveMetadata(type, metadata) {\n    const name = type && type.name;\n    const sourceMapUrl = `ng:///${name}/ɵdir.js`;\n    const compiler = getCompilerFacade({ usage: 0 /* JitCompilerUsage.Decorator */, kind: 'directive', type });\n    const facade = directiveMetadata(type, metadata);\n    facade.typeSourceSpan = compiler.createParseSourceSpan('Directive', name, sourceMapUrl);\n    if (facade.usesInheritance) {\n        addDirectiveDefToUndecoratedParents(type);\n    }\n    return { metadata: facade, sourceMapUrl };\n}\nfunction addDirectiveFactoryDef(type, metadata) {\n    let ngFactoryDef = null;\n    Object.defineProperty(type, NG_FACTORY_DEF, {\n        get: () => {\n            if (ngFactoryDef === null) {\n                const meta = getDirectiveMetadata(type, metadata);\n                const compiler = getCompilerFacade({ usage: 0 /* JitCompilerUsage.Decorator */, kind: 'directive', type });\n                ngFactoryDef = compiler.compileFactory(angularCoreEnv, `ng:///${type.name}/ɵfac.js`, {\n                    name: meta.metadata.name,\n                    type: meta.metadata.type,\n                    typeArgumentCount: 0,\n                    deps: reflectDependencies(type),\n                    target: compiler.FactoryTarget.Directive\n                });\n            }\n            return ngFactoryDef;\n        },\n        // Make the property configurable in dev mode to allow overriding in tests\n        configurable: !!ngDevMode,\n    });\n}\nfunction extendsDirectlyFromObject(type) {\n    return Object.getPrototypeOf(type.prototype) === Object.prototype;\n}\n/**\n * Extract the `R3DirectiveMetadata` for a particular directive (either a `Directive` or a\n * `Component`).\n */\nfunction directiveMetadata(type, metadata) {\n    // Reflect inputs and outputs.\n    const reflect = getReflect();\n    const propMetadata = reflect.ownPropMetadata(type);\n    return {\n        name: type.name,\n        type: type,\n        selector: metadata.selector !== undefined ? metadata.selector : null,\n        host: metadata.host || EMPTY_OBJ,\n        propMetadata: propMetadata,\n        inputs: metadata.inputs || EMPTY_ARRAY,\n        outputs: metadata.outputs || EMPTY_ARRAY,\n        queries: extractQueriesMetadata(type, propMetadata, isContentQuery),\n        lifecycle: { usesOnChanges: reflect.hasLifecycleHook(type, 'ngOnChanges') },\n        typeSourceSpan: null,\n        usesInheritance: !extendsDirectlyFromObject(type),\n        exportAs: extractExportAs(metadata.exportAs),\n        providers: metadata.providers || null,\n        viewQueries: extractQueriesMetadata(type, propMetadata, isViewQuery),\n        isStandalone: !!metadata.standalone,\n        hostDirectives: metadata.hostDirectives?.map(directive => typeof directive === 'function' ? { directive } : directive) ||\n            null\n    };\n}\n/**\n * Adds a directive definition to all parent classes of a type that don't have an Angular decorator.\n */\nfunction addDirectiveDefToUndecoratedParents(type) {\n    const objPrototype = Object.prototype;\n    let parent = Object.getPrototypeOf(type.prototype).constructor;\n    // Go up the prototype until we hit `Object`.\n    while (parent && parent !== objPrototype) {\n        // Since inheritance works if the class was annotated already, we only need to add\n        // the def if there are no annotations and the def hasn't been created already.\n        if (!getDirectiveDef(parent) && !getComponentDef(parent) &&\n            shouldAddAbstractDirective(parent)) {\n            compileDirective(parent, null);\n        }\n        parent = Object.getPrototypeOf(parent);\n    }\n}\nfunction convertToR3QueryPredicate(selector) {\n    return typeof selector === 'string' ? splitByComma(selector) : resolveForwardRef(selector);\n}\nfunction convertToR3QueryMetadata(propertyName, ann) {\n    return {\n        propertyName: propertyName,\n        predicate: convertToR3QueryPredicate(ann.selector),\n        descendants: ann.descendants,\n        first: ann.first,\n        read: ann.read ? ann.read : null,\n        static: !!ann.static,\n        emitDistinctChangesOnly: !!ann.emitDistinctChangesOnly,\n    };\n}\nfunction extractQueriesMetadata(type, propMetadata, isQueryAnn) {\n    const queriesMeta = [];\n    for (const field in propMetadata) {\n        if (propMetadata.hasOwnProperty(field)) {\n            const annotations = propMetadata[field];\n            annotations.forEach(ann => {\n                if (isQueryAnn(ann)) {\n                    if (!ann.selector) {\n                        throw new Error(`Can't construct a query for the property \"${field}\" of ` +\n                            `\"${stringifyForError(type)}\" since the query selector wasn't defined.`);\n                    }\n                    if (annotations.some(isInputAnnotation)) {\n                        throw new Error(`Cannot combine @Input decorators with query decorators`);\n                    }\n                    queriesMeta.push(convertToR3QueryMetadata(field, ann));\n                }\n            });\n        }\n    }\n    return queriesMeta;\n}\nfunction extractExportAs(exportAs) {\n    return exportAs === undefined ? null : splitByComma(exportAs);\n}\nfunction isContentQuery(value) {\n    const name = value.ngMetadataName;\n    return name === 'ContentChild' || name === 'ContentChildren';\n}\nfunction isViewQuery(value) {\n    const name = value.ngMetadataName;\n    return name === 'ViewChild' || name === 'ViewChildren';\n}\nfunction isInputAnnotation(value) {\n    return value.ngMetadataName === 'Input';\n}\nfunction splitByComma(value) {\n    return value.split(',').map(piece => piece.trim());\n}\nconst LIFECYCLE_HOOKS = [\n    'ngOnChanges', 'ngOnInit', 'ngOnDestroy', 'ngDoCheck', 'ngAfterViewInit', 'ngAfterViewChecked',\n    'ngAfterContentInit', 'ngAfterContentChecked'\n];\nfunction shouldAddAbstractDirective(type) {\n    const reflect = getReflect();\n    if (LIFECYCLE_HOOKS.some(hookName => reflect.hasLifecycleHook(type, hookName))) {\n        return true;\n    }\n    const propMetadata = reflect.propMetadata(type);\n    for (const field in propMetadata) {\n        const annotations = propMetadata[field];\n        for (let i = 0; i < annotations.length; i++) {\n            const current = annotations[i];\n            const metadataName = current.ngMetadataName;\n            if (isInputAnnotation(current) || isContentQuery(current) || isViewQuery(current) ||\n                metadataName === 'Output' || metadataName === 'HostBinding' ||\n                metadataName === 'HostListener') {\n                return true;\n            }\n        }\n    }\n    return false;\n}\n\nfunction compilePipe(type, meta) {\n    let ngPipeDef = null;\n    let ngFactoryDef = null;\n    Object.defineProperty(type, NG_FACTORY_DEF, {\n        get: () => {\n            if (ngFactoryDef === null) {\n                const metadata = getPipeMetadata(type, meta);\n                const compiler = getCompilerFacade({ usage: 0 /* JitCompilerUsage.Decorator */, kind: 'pipe', type: metadata.type });\n                ngFactoryDef = compiler.compileFactory(angularCoreEnv, `ng:///${metadata.name}/ɵfac.js`, {\n                    name: metadata.name,\n                    type: metadata.type,\n                    typeArgumentCount: 0,\n                    deps: reflectDependencies(type),\n                    target: compiler.FactoryTarget.Pipe\n                });\n            }\n            return ngFactoryDef;\n        },\n        // Make the property configurable in dev mode to allow overriding in tests\n        configurable: !!ngDevMode,\n    });\n    Object.defineProperty(type, NG_PIPE_DEF, {\n        get: () => {\n            if (ngPipeDef === null) {\n                const metadata = getPipeMetadata(type, meta);\n                const compiler = getCompilerFacade({ usage: 0 /* JitCompilerUsage.Decorator */, kind: 'pipe', type: metadata.type });\n                ngPipeDef =\n                    compiler.compilePipe(angularCoreEnv, `ng:///${metadata.name}/ɵpipe.js`, metadata);\n            }\n            return ngPipeDef;\n        },\n        // Make the property configurable in dev mode to allow overriding in tests\n        configurable: !!ngDevMode,\n    });\n}\nfunction getPipeMetadata(type, meta) {\n    return {\n        type: type,\n        name: type.name,\n        pipeName: meta.name,\n        pure: meta.pure !== undefined ? meta.pure : true,\n        isStandalone: !!meta.standalone,\n    };\n}\n\n/**\n * Type of the Directive metadata.\n *\n * @publicApi\n */\nconst Directive = makeDecorator('Directive', (dir = {}) => dir, undefined, undefined, (type, meta) => compileDirective(type, meta));\n/**\n * Component decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nconst Component = makeDecorator('Component', (c = {}) => ({ changeDetection: ChangeDetectionStrategy.Default, ...c }), Directive, undefined, (type, meta) => compileComponent(type, meta));\n/**\n * @Annotation\n * @publicApi\n */\nconst Pipe = makeDecorator('Pipe', (p) => ({ pure: true, ...p }), undefined, undefined, (type, meta) => compilePipe(type, meta));\n/**\n * @Annotation\n * @publicApi\n */\nconst Input = makePropDecorator('Input', (bindingPropertyName) => ({ bindingPropertyName }));\n/**\n * @Annotation\n * @publicApi\n */\nconst Output = makePropDecorator('Output', (bindingPropertyName) => ({ bindingPropertyName }));\n/**\n * @Annotation\n * @publicApi\n */\nconst HostBinding = makePropDecorator('HostBinding', (hostPropertyName) => ({ hostPropertyName }));\n/**\n * Decorator that binds a DOM event to a host listener and supplies configuration metadata.\n * Angular invokes the supplied handler method when the host element emits the specified event,\n * and updates the bound element with the result.\n *\n * If the handler method returns false, applies `preventDefault` on the bound element.\n *\n * @usageNotes\n *\n * The following example declares a directive\n * that attaches a click listener to a button and counts clicks.\n *\n * ```ts\n * @Directive({selector: 'button[counting]'})\n * class CountClicks {\n *   numberOfClicks = 0;\n *\n *   @HostListener('click', ['$event.target'])\n *   onClick(btn) {\n *     console.log('button', btn, 'number of clicks:', this.numberOfClicks++);\n *   }\n * }\n *\n * @Component({\n *   selector: 'app',\n *   template: '<button counting>Increment</button>',\n * })\n * class App {}\n *\n * ```\n *\n * The following example registers another DOM event handler that listens for `Enter` key-press\n * events on the global `window`.\n * ``` ts\n * import { HostListener, Component } from \"@angular/core\";\n *\n * @Component({\n *   selector: 'app',\n *   template: `<h1>Hello, you have pressed enter {{counter}} number of times!</h1> Press enter key\n * to increment the counter.\n *   <button (click)=\"resetCounter()\">Reset Counter</button>`\n * })\n * class AppComponent {\n *   counter = 0;\n *   @HostListener('window:keydown.enter', ['$event'])\n *   handleKeyDown(event: KeyboardEvent) {\n *     this.counter++;\n *   }\n *   resetCounter() {\n *     this.counter = 0;\n *   }\n * }\n * ```\n * The list of valid key names for `keydown` and `keyup` events\n * can be found here:\n * https://www.w3.org/TR/DOM-Level-3-Events-key/#named-key-attribute-values\n *\n * Note that keys can also be combined, e.g. `@HostListener('keydown.shift.a')`.\n *\n * The global target names that can be used to prefix an event name are\n * `document:`, `window:` and `body:`.\n *\n * @Annotation\n * @publicApi\n */\nconst HostListener = makePropDecorator('HostListener', (eventName, args) => ({ eventName, args }));\n\n/**\n * @Annotation\n * @publicApi\n */\nconst NgModule = makeDecorator('NgModule', (ngModule) => ngModule, undefined, undefined, \n/**\n * Decorator that marks the following class as an NgModule, and supplies\n * configuration metadata for it.\n *\n * * The `declarations` and `entryComponents` options configure the compiler\n * with information about what belongs to the NgModule.\n * * The `providers` options configures the NgModule's injector to provide\n * dependencies the NgModule members.\n * * The `imports` and `exports` options bring in members from other modules, and make\n * this module's members available to others.\n */\n(type, meta) => compileNgModule(type, meta));\n\n/**\n * This indirection is needed to free up Component, etc symbols in the public API\n * to be used by the decorator versions of these annotations.\n */\n\nfunction noop(...args) {\n    // Do nothing.\n}\n\n/*\n * This file exists to support compilation of @angular/core in Ivy mode.\n *\n * When the Angular compiler processes a compilation unit, it normally writes imports to\n * @angular/core. When compiling the core package itself this strategy isn't usable. Instead, the\n * compiler writes imports to this file.\n *\n * Only a subset of such imports are supported - core is not allowed to declare components or pipes.\n * A check in ngtsc's `R3SymbolsImportRewriter` validates this condition. The rewriter is only used\n * when compiling @angular/core and is responsible for translating an external name (prefixed with\n * ɵ) to the internal symbol name as exported below.\n *\n * The below symbols are used for @Injectable and @NgModule compilation.\n */\n/**\n * The existence of this constant (in this particular file) informs the Angular compiler that the\n * current program is actually @angular/core, which needs to be compiled specially.\n */\nconst ITS_JUST_ANGULAR = true;\n\n/**\n * A [DI token](guide/glossary#di-token \"DI token definition\") that you can use to provide\n * one or more initialization functions.\n *\n * The provided functions are injected at application startup and executed during\n * app initialization. If any of these functions returns a Promise or an Observable, initialization\n * does not complete until the Promise is resolved or the Observable is completed.\n *\n * You can, for example, create a factory function that loads language data\n * or an external configuration, and provide that function to the `APP_INITIALIZER` token.\n * The function is executed during the application bootstrap process,\n * and the needed data is available on startup.\n *\n * @see `ApplicationInitStatus`\n *\n * @usageNotes\n *\n * The following example illustrates how to configure a multi-provider using `APP_INITIALIZER` token\n * and a function returning a promise.\n *\n * ```\n *  function initializeApp(): Promise<any> {\n *    return new Promise((resolve, reject) => {\n *      // Do some asynchronous stuff\n *      resolve();\n *    });\n *  }\n *\n *  @NgModule({\n *   imports: [BrowserModule],\n *   declarations: [AppComponent],\n *   bootstrap: [AppComponent],\n *   providers: [{\n *     provide: APP_INITIALIZER,\n *     useFactory: () => initializeApp,\n *     multi: true\n *    }]\n *   })\n *  export class AppModule {}\n * ```\n *\n * It's also possible to configure a multi-provider using `APP_INITIALIZER` token and a function\n * returning an observable, see an example below. Note: the `HttpClient` in this example is used for\n * demo purposes to illustrate how the factory function can work with other providers available\n * through DI.\n *\n * ```\n *  function initializeAppFactory(httpClient: HttpClient): () => Observable<any> {\n *   return () => httpClient.get(\"https://someUrl.com/api/user\")\n *     .pipe(\n *        tap(user => { ... })\n *     );\n *  }\n *\n *  @NgModule({\n *    imports: [BrowserModule, HttpClientModule],\n *    declarations: [AppComponent],\n *    bootstrap: [AppComponent],\n *    providers: [{\n *      provide: APP_INITIALIZER,\n *      useFactory: initializeAppFactory,\n *      deps: [HttpClient],\n *      multi: true\n *    }]\n *  })\n *  export class AppModule {}\n * ```\n *\n * @publicApi\n */\nconst APP_INITIALIZER = new InjectionToken('Application Initializer');\n/**\n * A class that reflects the state of running {@link APP_INITIALIZER} functions.\n *\n * @publicApi\n */\nclass ApplicationInitStatus {\n    constructor(appInits) {\n        this.appInits = appInits;\n        this.resolve = noop;\n        this.reject = noop;\n        this.initialized = false;\n        this.done = false;\n        // TODO: Throw RuntimeErrorCode.INVALID_MULTI_PROVIDER if appInits is not an array\n        this.donePromise = new Promise((res, rej) => {\n            this.resolve = res;\n            this.reject = rej;\n        });\n    }\n    /** @internal */\n    runInitializers() {\n        if (this.initialized) {\n            return;\n        }\n        const asyncInitPromises = [];\n        const complete = () => {\n            this.done = true;\n            this.resolve();\n        };\n        if (this.appInits) {\n            for (let i = 0; i < this.appInits.length; i++) {\n                const initResult = this.appInits[i]();\n                if (isPromise(initResult)) {\n                    asyncInitPromises.push(initResult);\n                }\n                else if (isObservable(initResult)) {\n                    const observableAsPromise = new Promise((resolve, reject) => {\n                        initResult.subscribe({ complete: resolve, error: reject });\n                    });\n                    asyncInitPromises.push(observableAsPromise);\n                }\n            }\n        }\n        Promise.all(asyncInitPromises)\n            .then(() => {\n            complete();\n        })\n            .catch(e => {\n            this.reject(e);\n        });\n        if (asyncInitPromises.length === 0) {\n            complete();\n        }\n        this.initialized = true;\n    }\n}\nApplicationInitStatus.ɵfac = function ApplicationInitStatus_Factory(t) { return new (t || ApplicationInitStatus)(ɵɵinject(APP_INITIALIZER, 8)); };\nApplicationInitStatus.ɵprov = /*@__PURE__*/ ɵɵdefineInjectable({ token: ApplicationInitStatus, factory: ApplicationInitStatus.ɵfac, providedIn: 'root' });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && setClassMetadata(ApplicationInitStatus, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: undefined, decorators: [{\n                type: Inject,\n                args: [APP_INITIALIZER]\n            }, {\n                type: Optional\n            }] }]; }, null); })();\n\n/**\n * A [DI token](guide/glossary#di-token \"DI token definition\") representing a unique string ID, used\n * primarily for prefixing application attributes and CSS styles when\n * {@link ViewEncapsulation#Emulated ViewEncapsulation.Emulated} is being used.\n *\n * BY default, the value is randomly generated and assigned to the application by Angular.\n * To provide a custom ID value, use a DI provider <!-- TODO: provider --> to configure\n * the root {@link Injector} that uses this token.\n *\n * @publicApi\n */\nconst APP_ID = new InjectionToken('AppId', {\n    providedIn: 'root',\n    factory: _appIdRandomProviderFactory,\n});\nfunction _appIdRandomProviderFactory() {\n    return `${_randomChar()}${_randomChar()}${_randomChar()}`;\n}\n/**\n * Providers that generate a random `APP_ID_TOKEN`.\n * @publicApi\n */\nconst APP_ID_RANDOM_PROVIDER = {\n    provide: APP_ID,\n    useFactory: _appIdRandomProviderFactory,\n    deps: [],\n};\nfunction _randomChar() {\n    return String.fromCharCode(97 + Math.floor(Math.random() * 25));\n}\n/**\n * A function that is executed when a platform is initialized.\n * @publicApi\n */\nconst PLATFORM_INITIALIZER = new InjectionToken('Platform Initializer');\n/**\n * A token that indicates an opaque platform ID.\n * @publicApi\n */\nconst PLATFORM_ID = new InjectionToken('Platform ID', {\n    providedIn: 'platform',\n    factory: () => 'unknown', // set a default platform name, when none set explicitly\n});\n/**\n * A [DI token](guide/glossary#di-token \"DI token definition\") that indicates the root directory of\n * the application\n * @publicApi\n */\nconst PACKAGE_ROOT_URL = new InjectionToken('Application Packages Root URL');\n// We keep this token here, rather than the animations package, so that modules that only care\n// about which animations module is loaded (e.g. the CDK) can retrieve it without having to\n// include extra dependencies. See #44970 for more context.\n/**\n * A [DI token](guide/glossary#di-token \"DI token definition\") that indicates which animations\n * module has been loaded.\n * @publicApi\n */\nconst ANIMATION_MODULE_TYPE = new InjectionToken('AnimationModuleType');\n\nclass Console {\n    log(message) {\n        // tslint:disable-next-line:no-console\n        console.log(message);\n    }\n    // Note: for reporting errors use `DOM.logError()` as it is platform specific\n    warn(message) {\n        // tslint:disable-next-line:no-console\n        console.warn(message);\n    }\n}\nConsole.ɵfac = function Console_Factory(t) { return new (t || Console)(); };\nConsole.ɵprov = /*@__PURE__*/ ɵɵdefineInjectable({ token: Console, factory: Console.ɵfac, providedIn: 'platform' });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && setClassMetadata(Console, [{\n        type: Injectable,\n        args: [{ providedIn: 'platform' }]\n    }], null, null); })();\n\n/**\n * Work out the locale from the potential global properties.\n *\n * * Closure Compiler: use `goog.LOCALE`.\n * * Ivy enabled: use `$localize.locale`\n */\nfunction getGlobalLocale() {\n    if (typeof ngI18nClosureMode !== 'undefined' && ngI18nClosureMode &&\n        typeof goog !== 'undefined' && goog.LOCALE !== 'en') {\n        // * The default `goog.LOCALE` value is `en`, while Angular used `en-US`.\n        // * In order to preserve backwards compatibility, we use Angular default value over\n        //   Closure Compiler's one.\n        return goog.LOCALE;\n    }\n    else {\n        // KEEP `typeof $localize !== 'undefined' && $localize.locale` IN SYNC WITH THE LOCALIZE\n        // COMPILE-TIME INLINER.\n        //\n        // * During compile time inlining of translations the expression will be replaced\n        //   with a string literal that is the current locale. Other forms of this expression are not\n        //   guaranteed to be replaced.\n        //\n        // * During runtime translation evaluation, the developer is required to set `$localize.locale`\n        //   if required, or just to provide their own `LOCALE_ID` provider.\n        return (typeof $localize !== 'undefined' && $localize.locale) || DEFAULT_LOCALE_ID;\n    }\n}\n/**\n * Provide this token to set the locale of your application.\n * It is used for i18n extraction, by i18n pipes (DatePipe, I18nPluralPipe, CurrencyPipe,\n * DecimalPipe and PercentPipe) and by ICU expressions.\n *\n * See the [i18n guide](guide/i18n-common-locale-id) for more information.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * import { LOCALE_ID } from '@angular/core';\n * import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';\n * import { AppModule } from './app/app.module';\n *\n * platformBrowserDynamic().bootstrapModule(AppModule, {\n *   providers: [{provide: LOCALE_ID, useValue: 'en-US' }]\n * });\n * ```\n *\n * @publicApi\n */\nconst LOCALE_ID = new InjectionToken('LocaleId', {\n    providedIn: 'root',\n    factory: () => inject(LOCALE_ID, InjectFlags.Optional | InjectFlags.SkipSelf) || getGlobalLocale(),\n});\n/**\n * Provide this token to set the default currency code your application uses for\n * CurrencyPipe when there is no currency code passed into it. This is only used by\n * CurrencyPipe and has no relation to locale currency. Defaults to USD if not configured.\n *\n * See the [i18n guide](guide/i18n-common-locale-id) for more information.\n *\n * <div class=\"alert is-helpful\">\n *\n * **Deprecation notice:**\n *\n * The default currency code is currently always `USD` but this is deprecated from v9.\n *\n * **In v10 the default currency code will be taken from the current locale.**\n *\n * If you need the previous behavior then set it by creating a `DEFAULT_CURRENCY_CODE` provider in\n * your application `NgModule`:\n *\n * ```ts\n * {provide: DEFAULT_CURRENCY_CODE, useValue: 'USD'}\n * ```\n *\n * </div>\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';\n * import { AppModule } from './app/app.module';\n *\n * platformBrowserDynamic().bootstrapModule(AppModule, {\n *   providers: [{provide: DEFAULT_CURRENCY_CODE, useValue: 'EUR' }]\n * });\n * ```\n *\n * @publicApi\n */\nconst DEFAULT_CURRENCY_CODE = new InjectionToken('DefaultCurrencyCode', {\n    providedIn: 'root',\n    factory: () => USD_CURRENCY_CODE,\n});\n/**\n * Use this token at bootstrap to provide the content of your translation file (`xtb`,\n * `xlf` or `xlf2`) when you want to translate your application in another language.\n *\n * See the [i18n guide](guide/i18n-common-merge) for more information.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * import { TRANSLATIONS } from '@angular/core';\n * import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';\n * import { AppModule } from './app/app.module';\n *\n * // content of your translation file\n * const translations = '....';\n *\n * platformBrowserDynamic().bootstrapModule(AppModule, {\n *   providers: [{provide: TRANSLATIONS, useValue: translations }]\n * });\n * ```\n *\n * @publicApi\n */\nconst TRANSLATIONS = new InjectionToken('Translations');\n/**\n * Provide this token at bootstrap to set the format of your {@link TRANSLATIONS}: `xtb`,\n * `xlf` or `xlf2`.\n *\n * See the [i18n guide](guide/i18n-common-merge) for more information.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * import { TRANSLATIONS_FORMAT } from '@angular/core';\n * import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';\n * import { AppModule } from './app/app.module';\n *\n * platformBrowserDynamic().bootstrapModule(AppModule, {\n *   providers: [{provide: TRANSLATIONS_FORMAT, useValue: 'xlf' }]\n * });\n * ```\n *\n * @publicApi\n */\nconst TRANSLATIONS_FORMAT = new InjectionToken('TranslationsFormat');\n/**\n * Use this enum at bootstrap as an option of `bootstrapModule` to define the strategy\n * that the compiler should use in case of missing translations:\n * - Error: throw if you have missing translations.\n * - Warning (default): show a warning in the console and/or shell.\n * - Ignore: do nothing.\n *\n * See the [i18n guide](guide/i18n-common-merge#report-missing-translations) for more information.\n *\n * @usageNotes\n * ### Example\n * ```typescript\n * import { MissingTranslationStrategy } from '@angular/core';\n * import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';\n * import { AppModule } from './app/app.module';\n *\n * platformBrowserDynamic().bootstrapModule(AppModule, {\n *   missingTranslation: MissingTranslationStrategy.Error\n * });\n * ```\n *\n * @publicApi\n */\nvar MissingTranslationStrategy;\n(function (MissingTranslationStrategy) {\n    MissingTranslationStrategy[MissingTranslationStrategy[\"Error\"] = 0] = \"Error\";\n    MissingTranslationStrategy[MissingTranslationStrategy[\"Warning\"] = 1] = \"Warning\";\n    MissingTranslationStrategy[MissingTranslationStrategy[\"Ignore\"] = 2] = \"Ignore\";\n})(MissingTranslationStrategy || (MissingTranslationStrategy = {}));\n\n/**\n * Combination of NgModuleFactory and ComponentFactories.\n *\n * @publicApi\n *\n * @deprecated\n * Ivy JIT mode doesn't require accessing this symbol.\n * See [JIT API changes due to ViewEngine deprecation](guide/deprecations#jit-api-changes) for\n * additional context.\n */\nclass ModuleWithComponentFactories {\n    constructor(ngModuleFactory, componentFactories) {\n        this.ngModuleFactory = ngModuleFactory;\n        this.componentFactories = componentFactories;\n    }\n}\n/**\n * Low-level service for running the angular compiler during runtime\n * to create {@link ComponentFactory}s, which\n * can later be used to create and render a Component instance.\n *\n * Each `@NgModule` provides an own `Compiler` to its injector,\n * that will use the directives/pipes of the ng module for compilation\n * of components.\n *\n * @publicApi\n *\n * @deprecated\n * Ivy JIT mode doesn't require accessing this symbol.\n * See [JIT API changes due to ViewEngine deprecation](guide/deprecations#jit-api-changes) for\n * additional context.\n */\nclass Compiler {\n    /**\n     * Compiles the given NgModule and all of its components. All templates of the components listed\n     * in `entryComponents` have to be inlined.\n     */\n    compileModuleSync(moduleType) {\n        return new NgModuleFactory(moduleType);\n    }\n    /**\n     * Compiles the given NgModule and all of its components\n     */\n    compileModuleAsync(moduleType) {\n        return Promise.resolve(this.compileModuleSync(moduleType));\n    }\n    /**\n     * Same as {@link #compileModuleSync} but also creates ComponentFactories for all components.\n     */\n    compileModuleAndAllComponentsSync(moduleType) {\n        const ngModuleFactory = this.compileModuleSync(moduleType);\n        const moduleDef = getNgModuleDef(moduleType);\n        const componentFactories = maybeUnwrapFn(moduleDef.declarations)\n            .reduce((factories, declaration) => {\n            const componentDef = getComponentDef(declaration);\n            componentDef && factories.push(new ComponentFactory(componentDef));\n            return factories;\n        }, []);\n        return new ModuleWithComponentFactories(ngModuleFactory, componentFactories);\n    }\n    /**\n     * Same as {@link #compileModuleAsync} but also creates ComponentFactories for all components.\n     */\n    compileModuleAndAllComponentsAsync(moduleType) {\n        return Promise.resolve(this.compileModuleAndAllComponentsSync(moduleType));\n    }\n    /**\n     * Clears all caches.\n     */\n    clearCache() { }\n    /**\n     * Clears the cache for the given component/ngModule.\n     */\n    clearCacheFor(type) { }\n    /**\n     * Returns the id for a given NgModule, if one is defined and known to the compiler.\n     */\n    getModuleId(moduleType) {\n        return undefined;\n    }\n}\nCompiler.ɵfac = function Compiler_Factory(t) { return new (t || Compiler)(); };\nCompiler.ɵprov = /*@__PURE__*/ ɵɵdefineInjectable({ token: Compiler, factory: Compiler.ɵfac, providedIn: 'root' });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && setClassMetadata(Compiler, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], null, null); })();\n/**\n * Token to provide CompilerOptions in the platform injector.\n *\n * @publicApi\n */\nconst COMPILER_OPTIONS = new InjectionToken('compilerOptions');\n/**\n * A factory for creating a Compiler\n *\n * @publicApi\n *\n * @deprecated\n * Ivy JIT mode doesn't require accessing this symbol.\n * See [JIT API changes due to ViewEngine deprecation](guide/deprecations#jit-api-changes) for\n * additional context.\n */\nclass CompilerFactory {\n}\n\n/**\n * Marks a component for check (in case of OnPush components) and synchronously\n * performs change detection on the application this component belongs to.\n *\n * @param component Component to {@link ChangeDetectorRef#markForCheck mark for check}.\n *\n * @publicApi\n * @globalApi ng\n */\nfunction applyChanges(component) {\n    ngDevMode && assertDefined(component, 'component');\n    markViewDirty(getComponentViewByInstance(component));\n    getRootComponents(component).forEach(rootComponent => detectChanges(rootComponent));\n}\n\n/**\n * This file introduces series of globally accessible debug tools\n * to allow for the Angular debugging story to function.\n *\n * To see this in action run the following command:\n *\n *   bazel run //packages/core/test/bundling/todo:devserver\n *\n *  Then load `localhost:5432` and start using the console tools.\n */\n/**\n * This value reflects the property on the window where the dev\n * tools are patched (window.ng).\n * */\nconst GLOBAL_PUBLISH_EXPANDO_KEY = 'ng';\nlet _published = false;\n/**\n * Publishes a collection of default debug tools onto`window.ng`.\n *\n * These functions are available globally when Angular is in development\n * mode and are automatically stripped away from prod mode is on.\n */\nfunction publishDefaultGlobalUtils$1() {\n    if (!_published) {\n        _published = true;\n        /**\n         * Warning: this function is *INTERNAL* and should not be relied upon in application's code.\n         * The contract of the function might be changed in any release and/or the function can be\n         * removed completely.\n         */\n        publishGlobalUtil('ɵsetProfiler', setProfiler);\n        publishGlobalUtil('getDirectiveMetadata', getDirectiveMetadata$1);\n        publishGlobalUtil('getComponent', getComponent);\n        publishGlobalUtil('getContext', getContext);\n        publishGlobalUtil('getListeners', getListeners);\n        publishGlobalUtil('getOwningComponent', getOwningComponent);\n        publishGlobalUtil('getHostElement', getHostElement);\n        publishGlobalUtil('getInjector', getInjector);\n        publishGlobalUtil('getRootComponents', getRootComponents);\n        publishGlobalUtil('getDirectives', getDirectives);\n        publishGlobalUtil('applyChanges', applyChanges);\n    }\n}\n/**\n * Publishes the given function to `window.ng` so that it can be\n * used from the browser console when an application is not in production.\n */\nfunction publishGlobalUtil(name, fn) {\n    if (typeof COMPILED === 'undefined' || !COMPILED) {\n        // Note: we can't export `ng` when using closure enhanced optimization as:\n        // - closure declares globals itself for minified names, which sometimes clobber our `ng` global\n        // - we can't declare a closure extern as the namespace `ng` is already used within Google\n        //   for typings for AngularJS (via `goog.provide('ng....')`).\n        const w = _global;\n        ngDevMode && assertDefined(fn, 'function not defined');\n        if (w) {\n            let container = w[GLOBAL_PUBLISH_EXPANDO_KEY];\n            if (!container) {\n                container = w[GLOBAL_PUBLISH_EXPANDO_KEY] = {};\n            }\n            container[name] = fn;\n        }\n    }\n}\n\nconst promise = (() => Promise.resolve(0))();\nfunction scheduleMicroTask(fn) {\n    if (typeof Zone === 'undefined') {\n        // use promise to schedule microTask instead of use Zone\n        promise.then(() => {\n            fn && fn.apply(null, null);\n        });\n    }\n    else {\n        Zone.current.scheduleMicroTask('scheduleMicrotask', fn);\n    }\n}\n\nfunction getNativeRequestAnimationFrame() {\n    let nativeRequestAnimationFrame = _global['requestAnimationFrame'];\n    let nativeCancelAnimationFrame = _global['cancelAnimationFrame'];\n    if (typeof Zone !== 'undefined' && nativeRequestAnimationFrame && nativeCancelAnimationFrame) {\n        // use unpatched version of requestAnimationFrame(native delegate) if possible\n        // to avoid another Change detection\n        const unpatchedRequestAnimationFrame = nativeRequestAnimationFrame[Zone.__symbol__('OriginalDelegate')];\n        if (unpatchedRequestAnimationFrame) {\n            nativeRequestAnimationFrame = unpatchedRequestAnimationFrame;\n        }\n        const unpatchedCancelAnimationFrame = nativeCancelAnimationFrame[Zone.__symbol__('OriginalDelegate')];\n        if (unpatchedCancelAnimationFrame) {\n            nativeCancelAnimationFrame = unpatchedCancelAnimationFrame;\n        }\n    }\n    return { nativeRequestAnimationFrame, nativeCancelAnimationFrame };\n}\n\nclass AsyncStackTaggingZoneSpec {\n    constructor(namePrefix, consoleAsyncStackTaggingImpl = console) {\n        this.name = 'asyncStackTagging for ' + namePrefix;\n        this.createTask = consoleAsyncStackTaggingImpl?.createTask ?? (() => null);\n    }\n    onScheduleTask(delegate, _current, target, task) {\n        task.consoleTask = this.createTask(`Zone - ${task.source || task.type}`);\n        return delegate.scheduleTask(target, task);\n    }\n    onInvokeTask(delegate, _currentZone, targetZone, task, applyThis, applyArgs) {\n        let ret;\n        if (task.consoleTask) {\n            ret = task.consoleTask.run(() => delegate.invokeTask(targetZone, task, applyThis, applyArgs));\n        }\n        else {\n            ret = delegate.invokeTask(targetZone, task, applyThis, applyArgs);\n        }\n        return ret;\n    }\n}\n\n/**\n * An injectable service for executing work inside or outside of the Angular zone.\n *\n * The most common use of this service is to optimize performance when starting a work consisting of\n * one or more asynchronous tasks that don't require UI updates or error handling to be handled by\n * Angular. Such tasks can be kicked off via {@link #runOutsideAngular} and if needed, these tasks\n * can reenter the Angular zone via {@link #run}.\n *\n * <!-- TODO: add/fix links to:\n *   - docs explaining zones and the use of zones in Angular and change-detection\n *   - link to runOutsideAngular/run (throughout this file!)\n *   -->\n *\n * @usageNotes\n * ### Example\n *\n * ```\n * import {Component, NgZone} from '@angular/core';\n * import {NgIf} from '@angular/common';\n *\n * @Component({\n *   selector: 'ng-zone-demo',\n *   template: `\n *     <h2>Demo: NgZone</h2>\n *\n *     <p>Progress: {{progress}}%</p>\n *     <p *ngIf=\"progress >= 100\">Done processing {{label}} of Angular zone!</p>\n *\n *     <button (click)=\"processWithinAngularZone()\">Process within Angular zone</button>\n *     <button (click)=\"processOutsideOfAngularZone()\">Process outside of Angular zone</button>\n *   `,\n * })\n * export class NgZoneDemo {\n *   progress: number = 0;\n *   label: string;\n *\n *   constructor(private _ngZone: NgZone) {}\n *\n *   // Loop inside the Angular zone\n *   // so the UI DOES refresh after each setTimeout cycle\n *   processWithinAngularZone() {\n *     this.label = 'inside';\n *     this.progress = 0;\n *     this._increaseProgress(() => console.log('Inside Done!'));\n *   }\n *\n *   // Loop outside of the Angular zone\n *   // so the UI DOES NOT refresh after each setTimeout cycle\n *   processOutsideOfAngularZone() {\n *     this.label = 'outside';\n *     this.progress = 0;\n *     this._ngZone.runOutsideAngular(() => {\n *       this._increaseProgress(() => {\n *         // reenter the Angular zone and display done\n *         this._ngZone.run(() => { console.log('Outside Done!'); });\n *       });\n *     });\n *   }\n *\n *   _increaseProgress(doneCallback: () => void) {\n *     this.progress += 1;\n *     console.log(`Current progress: ${this.progress}%`);\n *\n *     if (this.progress < 100) {\n *       window.setTimeout(() => this._increaseProgress(doneCallback), 10);\n *     } else {\n *       doneCallback();\n *     }\n *   }\n * }\n * ```\n *\n * @publicApi\n */\nclass NgZone {\n    constructor({ enableLongStackTrace = false, shouldCoalesceEventChangeDetection = false, shouldCoalesceRunChangeDetection = false }) {\n        this.hasPendingMacrotasks = false;\n        this.hasPendingMicrotasks = false;\n        /**\n         * Whether there are no outstanding microtasks or macrotasks.\n         */\n        this.isStable = true;\n        /**\n         * Notifies when code enters Angular Zone. This gets fired first on VM Turn.\n         */\n        this.onUnstable = new EventEmitter(false);\n        /**\n         * Notifies when there is no more microtasks enqueued in the current VM Turn.\n         * This is a hint for Angular to do change detection, which may enqueue more microtasks.\n         * For this reason this event can fire multiple times per VM Turn.\n         */\n        this.onMicrotaskEmpty = new EventEmitter(false);\n        /**\n         * Notifies when the last `onMicrotaskEmpty` has run and there are no more microtasks, which\n         * implies we are about to relinquish VM turn.\n         * This event gets called just once.\n         */\n        this.onStable = new EventEmitter(false);\n        /**\n         * Notifies that an error has been delivered.\n         */\n        this.onError = new EventEmitter(false);\n        if (typeof Zone == 'undefined') {\n            throw new RuntimeError(908 /* RuntimeErrorCode.MISSING_ZONEJS */, ngDevMode && `In this configuration Angular requires Zone.js`);\n        }\n        Zone.assertZonePatched();\n        const self = this;\n        self._nesting = 0;\n        self._outer = self._inner = Zone.current;\n        // AsyncStackTaggingZoneSpec provides `linked stack traces` to show\n        // where the async operation is scheduled. For more details, refer\n        // to this article, https://developer.chrome.com/blog/devtools-better-angular-debugging/\n        // And we only import this AsyncStackTaggingZoneSpec in development mode,\n        // in the production mode, the AsyncStackTaggingZoneSpec will be tree shaken away.\n        if (ngDevMode) {\n            self._inner = self._inner.fork(new AsyncStackTaggingZoneSpec('Angular'));\n        }\n        if (Zone['TaskTrackingZoneSpec']) {\n            self._inner = self._inner.fork(new Zone['TaskTrackingZoneSpec']);\n        }\n        if (enableLongStackTrace && Zone['longStackTraceZoneSpec']) {\n            self._inner = self._inner.fork(Zone['longStackTraceZoneSpec']);\n        }\n        // if shouldCoalesceRunChangeDetection is true, all tasks including event tasks will be\n        // coalesced, so shouldCoalesceEventChangeDetection option is not necessary and can be skipped.\n        self.shouldCoalesceEventChangeDetection =\n            !shouldCoalesceRunChangeDetection && shouldCoalesceEventChangeDetection;\n        self.shouldCoalesceRunChangeDetection = shouldCoalesceRunChangeDetection;\n        self.lastRequestAnimationFrameId = -1;\n        self.nativeRequestAnimationFrame = getNativeRequestAnimationFrame().nativeRequestAnimationFrame;\n        forkInnerZoneWithAngularBehavior(self);\n    }\n    static isInAngularZone() {\n        // Zone needs to be checked, because this method might be called even when NoopNgZone is used.\n        return typeof Zone !== 'undefined' && Zone.current.get('isAngularZone') === true;\n    }\n    static assertInAngularZone() {\n        if (!NgZone.isInAngularZone()) {\n            throw new RuntimeError(909 /* RuntimeErrorCode.UNEXPECTED_ZONE_STATE */, ngDevMode && 'Expected to be in Angular Zone, but it is not!');\n        }\n    }\n    static assertNotInAngularZone() {\n        if (NgZone.isInAngularZone()) {\n            throw new RuntimeError(909 /* RuntimeErrorCode.UNEXPECTED_ZONE_STATE */, ngDevMode && 'Expected to not be in Angular Zone, but it is!');\n        }\n    }\n    /**\n     * Executes the `fn` function synchronously within the Angular zone and returns value returned by\n     * the function.\n     *\n     * Running functions via `run` allows you to reenter Angular zone from a task that was executed\n     * outside of the Angular zone (typically started via {@link #runOutsideAngular}).\n     *\n     * Any future tasks or microtasks scheduled from within this function will continue executing from\n     * within the Angular zone.\n     *\n     * If a synchronous error happens it will be rethrown and not reported via `onError`.\n     */\n    run(fn, applyThis, applyArgs) {\n        return this._inner.run(fn, applyThis, applyArgs);\n    }\n    /**\n     * Executes the `fn` function synchronously within the Angular zone as a task and returns value\n     * returned by the function.\n     *\n     * Running functions via `run` allows you to reenter Angular zone from a task that was executed\n     * outside of the Angular zone (typically started via {@link #runOutsideAngular}).\n     *\n     * Any future tasks or microtasks scheduled from within this function will continue executing from\n     * within the Angular zone.\n     *\n     * If a synchronous error happens it will be rethrown and not reported via `onError`.\n     */\n    runTask(fn, applyThis, applyArgs, name) {\n        const zone = this._inner;\n        const task = zone.scheduleEventTask('NgZoneEvent: ' + name, fn, EMPTY_PAYLOAD, noop, noop);\n        try {\n            return zone.runTask(task, applyThis, applyArgs);\n        }\n        finally {\n            zone.cancelTask(task);\n        }\n    }\n    /**\n     * Same as `run`, except that synchronous errors are caught and forwarded via `onError` and not\n     * rethrown.\n     */\n    runGuarded(fn, applyThis, applyArgs) {\n        return this._inner.runGuarded(fn, applyThis, applyArgs);\n    }\n    /**\n     * Executes the `fn` function synchronously in Angular's parent zone and returns value returned by\n     * the function.\n     *\n     * Running functions via {@link #runOutsideAngular} allows you to escape Angular's zone and do\n     * work that\n     * doesn't trigger Angular change-detection or is subject to Angular's error handling.\n     *\n     * Any future tasks or microtasks scheduled from within this function will continue executing from\n     * outside of the Angular zone.\n     *\n     * Use {@link #run} to reenter the Angular zone and do work that updates the application model.\n     */\n    runOutsideAngular(fn) {\n        return this._outer.run(fn);\n    }\n}\nconst EMPTY_PAYLOAD = {};\nfunction checkStable(zone) {\n    // TODO: @JiaLiPassion, should check zone.isCheckStableRunning to prevent\n    // re-entry. The case is:\n    //\n    // @Component({...})\n    // export class AppComponent {\n    // constructor(private ngZone: NgZone) {\n    //   this.ngZone.onStable.subscribe(() => {\n    //     this.ngZone.run(() => console.log('stable'););\n    //   });\n    // }\n    //\n    // The onStable subscriber run another function inside ngZone\n    // which causes `checkStable()` re-entry.\n    // But this fix causes some issues in g3, so this fix will be\n    // launched in another PR.\n    if (zone._nesting == 0 && !zone.hasPendingMicrotasks && !zone.isStable) {\n        try {\n            zone._nesting++;\n            zone.onMicrotaskEmpty.emit(null);\n        }\n        finally {\n            zone._nesting--;\n            if (!zone.hasPendingMicrotasks) {\n                try {\n                    zone.runOutsideAngular(() => zone.onStable.emit(null));\n                }\n                finally {\n                    zone.isStable = true;\n                }\n            }\n        }\n    }\n}\nfunction delayChangeDetectionForEvents(zone) {\n    /**\n     * We also need to check _nesting here\n     * Consider the following case with shouldCoalesceRunChangeDetection = true\n     *\n     * ngZone.run(() => {});\n     * ngZone.run(() => {});\n     *\n     * We want the two `ngZone.run()` only trigger one change detection\n     * when shouldCoalesceRunChangeDetection is true.\n     * And because in this case, change detection run in async way(requestAnimationFrame),\n     * so we also need to check the _nesting here to prevent multiple\n     * change detections.\n     */\n    if (zone.isCheckStableRunning || zone.lastRequestAnimationFrameId !== -1) {\n        return;\n    }\n    zone.lastRequestAnimationFrameId = zone.nativeRequestAnimationFrame.call(_global, () => {\n        // This is a work around for https://github.com/angular/angular/issues/36839.\n        // The core issue is that when event coalescing is enabled it is possible for microtasks\n        // to get flushed too early (As is the case with `Promise.then`) between the\n        // coalescing eventTasks.\n        //\n        // To workaround this we schedule a \"fake\" eventTask before we process the\n        // coalescing eventTasks. The benefit of this is that the \"fake\" container eventTask\n        //  will prevent the microtasks queue from getting drained in between the coalescing\n        // eventTask execution.\n        if (!zone.fakeTopEventTask) {\n            zone.fakeTopEventTask = Zone.root.scheduleEventTask('fakeTopEventTask', () => {\n                zone.lastRequestAnimationFrameId = -1;\n                updateMicroTaskStatus(zone);\n                zone.isCheckStableRunning = true;\n                checkStable(zone);\n                zone.isCheckStableRunning = false;\n            }, undefined, () => { }, () => { });\n        }\n        zone.fakeTopEventTask.invoke();\n    });\n    updateMicroTaskStatus(zone);\n}\nfunction forkInnerZoneWithAngularBehavior(zone) {\n    const delayChangeDetectionForEventsDelegate = () => {\n        delayChangeDetectionForEvents(zone);\n    };\n    zone._inner = zone._inner.fork({\n        name: 'angular',\n        properties: { 'isAngularZone': true },\n        onInvokeTask: (delegate, current, target, task, applyThis, applyArgs) => {\n            try {\n                onEnter(zone);\n                return delegate.invokeTask(target, task, applyThis, applyArgs);\n            }\n            finally {\n                if ((zone.shouldCoalesceEventChangeDetection && task.type === 'eventTask') ||\n                    zone.shouldCoalesceRunChangeDetection) {\n                    delayChangeDetectionForEventsDelegate();\n                }\n                onLeave(zone);\n            }\n        },\n        onInvoke: (delegate, current, target, callback, applyThis, applyArgs, source) => {\n            try {\n                onEnter(zone);\n                return delegate.invoke(target, callback, applyThis, applyArgs, source);\n            }\n            finally {\n                if (zone.shouldCoalesceRunChangeDetection) {\n                    delayChangeDetectionForEventsDelegate();\n                }\n                onLeave(zone);\n            }\n        },\n        onHasTask: (delegate, current, target, hasTaskState) => {\n            delegate.hasTask(target, hasTaskState);\n            if (current === target) {\n                // We are only interested in hasTask events which originate from our zone\n                // (A child hasTask event is not interesting to us)\n                if (hasTaskState.change == 'microTask') {\n                    zone._hasPendingMicrotasks = hasTaskState.microTask;\n                    updateMicroTaskStatus(zone);\n                    checkStable(zone);\n                }\n                else if (hasTaskState.change == 'macroTask') {\n                    zone.hasPendingMacrotasks = hasTaskState.macroTask;\n                }\n            }\n        },\n        onHandleError: (delegate, current, target, error) => {\n            delegate.handleError(target, error);\n            zone.runOutsideAngular(() => zone.onError.emit(error));\n            return false;\n        }\n    });\n}\nfunction updateMicroTaskStatus(zone) {\n    if (zone._hasPendingMicrotasks ||\n        ((zone.shouldCoalesceEventChangeDetection || zone.shouldCoalesceRunChangeDetection) &&\n            zone.lastRequestAnimationFrameId !== -1)) {\n        zone.hasPendingMicrotasks = true;\n    }\n    else {\n        zone.hasPendingMicrotasks = false;\n    }\n}\nfunction onEnter(zone) {\n    zone._nesting++;\n    if (zone.isStable) {\n        zone.isStable = false;\n        zone.onUnstable.emit(null);\n    }\n}\nfunction onLeave(zone) {\n    zone._nesting--;\n    checkStable(zone);\n}\n/**\n * Provides a noop implementation of `NgZone` which does nothing. This zone requires explicit calls\n * to framework to perform rendering.\n */\nclass NoopNgZone {\n    constructor() {\n        this.hasPendingMicrotasks = false;\n        this.hasPendingMacrotasks = false;\n        this.isStable = true;\n        this.onUnstable = new EventEmitter();\n        this.onMicrotaskEmpty = new EventEmitter();\n        this.onStable = new EventEmitter();\n        this.onError = new EventEmitter();\n    }\n    run(fn, applyThis, applyArgs) {\n        return fn.apply(applyThis, applyArgs);\n    }\n    runGuarded(fn, applyThis, applyArgs) {\n        return fn.apply(applyThis, applyArgs);\n    }\n    runOutsideAngular(fn) {\n        return fn();\n    }\n    runTask(fn, applyThis, applyArgs, name) {\n        return fn.apply(applyThis, applyArgs);\n    }\n}\n\n/**\n * Internal injection token that can used to access an instance of a Testability class.\n *\n * This token acts as a bridge between the core bootstrap code and the `Testability` class. This is\n * needed to ensure that there are no direct references to the `Testability` class, so it can be\n * tree-shaken away (if not referenced). For the environments/setups when the `Testability` class\n * should be available, this token is used to add a provider that references the `Testability`\n * class. Otherwise, only this token is retained in a bundle, but the `Testability` class is not.\n */\nconst TESTABILITY = new InjectionToken('');\n/**\n * Internal injection token to retrieve Testability getter class instance.\n */\nconst TESTABILITY_GETTER = new InjectionToken('');\n/**\n * The Testability service provides testing hooks that can be accessed from\n * the browser.\n *\n * Angular applications bootstrapped using an NgModule (via `@NgModule.bootstrap` field) will also\n * instantiate Testability by default (in both development and production modes).\n *\n * For applications bootstrapped using the `bootstrapApplication` function, Testability is not\n * included by default. You can include it into your applications by getting the list of necessary\n * providers using the `provideProtractorTestingSupport()` function and adding them into the\n * `options.providers` array. Example:\n *\n * ```typescript\n * import {provideProtractorTestingSupport} from '@angular/platform-browser';\n *\n * await bootstrapApplication(RootComponent, providers: [provideProtractorTestingSupport()]);\n * ```\n *\n * @publicApi\n */\nclass Testability {\n    constructor(_ngZone, registry, testabilityGetter) {\n        this._ngZone = _ngZone;\n        this.registry = registry;\n        this._pendingCount = 0;\n        this._isZoneStable = true;\n        /**\n         * Whether any work was done since the last 'whenStable' callback. This is\n         * useful to detect if this could have potentially destabilized another\n         * component while it is stabilizing.\n         * @internal\n         */\n        this._didWork = false;\n        this._callbacks = [];\n        this.taskTrackingZone = null;\n        // If there was no Testability logic registered in the global scope\n        // before, register the current testability getter as a global one.\n        if (!_testabilityGetter) {\n            setTestabilityGetter(testabilityGetter);\n            testabilityGetter.addToWindow(registry);\n        }\n        this._watchAngularEvents();\n        _ngZone.run(() => {\n            this.taskTrackingZone =\n                typeof Zone == 'undefined' ? null : Zone.current.get('TaskTrackingZone');\n        });\n    }\n    _watchAngularEvents() {\n        this._ngZone.onUnstable.subscribe({\n            next: () => {\n                this._didWork = true;\n                this._isZoneStable = false;\n            }\n        });\n        this._ngZone.runOutsideAngular(() => {\n            this._ngZone.onStable.subscribe({\n                next: () => {\n                    NgZone.assertNotInAngularZone();\n                    scheduleMicroTask(() => {\n                        this._isZoneStable = true;\n                        this._runCallbacksIfReady();\n                    });\n                }\n            });\n        });\n    }\n    /**\n     * Increases the number of pending request\n     * @deprecated pending requests are now tracked with zones.\n     */\n    increasePendingRequestCount() {\n        this._pendingCount += 1;\n        this._didWork = true;\n        return this._pendingCount;\n    }\n    /**\n     * Decreases the number of pending request\n     * @deprecated pending requests are now tracked with zones\n     */\n    decreasePendingRequestCount() {\n        this._pendingCount -= 1;\n        if (this._pendingCount < 0) {\n            throw new Error('pending async requests below zero');\n        }\n        this._runCallbacksIfReady();\n        return this._pendingCount;\n    }\n    /**\n     * Whether an associated application is stable\n     */\n    isStable() {\n        return this._isZoneStable && this._pendingCount === 0 && !this._ngZone.hasPendingMacrotasks;\n    }\n    _runCallbacksIfReady() {\n        if (this.isStable()) {\n            // Schedules the call backs in a new frame so that it is always async.\n            scheduleMicroTask(() => {\n                while (this._callbacks.length !== 0) {\n                    let cb = this._callbacks.pop();\n                    clearTimeout(cb.timeoutId);\n                    cb.doneCb(this._didWork);\n                }\n                this._didWork = false;\n            });\n        }\n        else {\n            // Still not stable, send updates.\n            let pending = this.getPendingTasks();\n            this._callbacks = this._callbacks.filter((cb) => {\n                if (cb.updateCb && cb.updateCb(pending)) {\n                    clearTimeout(cb.timeoutId);\n                    return false;\n                }\n                return true;\n            });\n            this._didWork = true;\n        }\n    }\n    getPendingTasks() {\n        if (!this.taskTrackingZone) {\n            return [];\n        }\n        // Copy the tasks data so that we don't leak tasks.\n        return this.taskTrackingZone.macroTasks.map((t) => {\n            return {\n                source: t.source,\n                // From TaskTrackingZone:\n                // https://github.com/angular/zone.js/blob/master/lib/zone-spec/task-tracking.ts#L40\n                creationLocation: t.creationLocation,\n                data: t.data\n            };\n        });\n    }\n    addCallback(cb, timeout, updateCb) {\n        let timeoutId = -1;\n        if (timeout && timeout > 0) {\n            timeoutId = setTimeout(() => {\n                this._callbacks = this._callbacks.filter((cb) => cb.timeoutId !== timeoutId);\n                cb(this._didWork, this.getPendingTasks());\n            }, timeout);\n        }\n        this._callbacks.push({ doneCb: cb, timeoutId: timeoutId, updateCb: updateCb });\n    }\n    /**\n     * Wait for the application to be stable with a timeout. If the timeout is reached before that\n     * happens, the callback receives a list of the macro tasks that were pending, otherwise null.\n     *\n     * @param doneCb The callback to invoke when Angular is stable or the timeout expires\n     *    whichever comes first.\n     * @param timeout Optional. The maximum time to wait for Angular to become stable. If not\n     *    specified, whenStable() will wait forever.\n     * @param updateCb Optional. If specified, this callback will be invoked whenever the set of\n     *    pending macrotasks changes. If this callback returns true doneCb will not be invoked\n     *    and no further updates will be issued.\n     */\n    whenStable(doneCb, timeout, updateCb) {\n        if (updateCb && !this.taskTrackingZone) {\n            throw new Error('Task tracking zone is required when passing an update callback to ' +\n                'whenStable(). Is \"zone.js/plugins/task-tracking\" loaded?');\n        }\n        // These arguments are 'Function' above to keep the public API simple.\n        this.addCallback(doneCb, timeout, updateCb);\n        this._runCallbacksIfReady();\n    }\n    /**\n     * Get the number of pending requests\n     * @deprecated pending requests are now tracked with zones\n     */\n    getPendingRequestCount() {\n        return this._pendingCount;\n    }\n    /**\n     * Registers an application with a testability hook so that it can be tracked.\n     * @param token token of application, root element\n     *\n     * @internal\n     */\n    registerApplication(token) {\n        this.registry.registerApplication(token, this);\n    }\n    /**\n     * Unregisters an application.\n     * @param token token of application, root element\n     *\n     * @internal\n     */\n    unregisterApplication(token) {\n        this.registry.unregisterApplication(token);\n    }\n    /**\n     * Find providers by name\n     * @param using The root element to search from\n     * @param provider The name of binding variable\n     * @param exactMatch Whether using exactMatch\n     */\n    findProviders(using, provider, exactMatch) {\n        // TODO(juliemr): implement.\n        return [];\n    }\n}\nTestability.ɵfac = function Testability_Factory(t) { return new (t || Testability)(ɵɵinject(NgZone), ɵɵinject(TestabilityRegistry), ɵɵinject(TESTABILITY_GETTER)); };\nTestability.ɵprov = /*@__PURE__*/ ɵɵdefineInjectable({ token: Testability, factory: Testability.ɵfac });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && setClassMetadata(Testability, [{\n        type: Injectable\n    }], function () { return [{ type: NgZone }, { type: TestabilityRegistry }, { type: undefined, decorators: [{\n                type: Inject,\n                args: [TESTABILITY_GETTER]\n            }] }]; }, null); })();\n/**\n * A global registry of {@link Testability} instances for specific elements.\n * @publicApi\n */\nclass TestabilityRegistry {\n    constructor() {\n        /** @internal */\n        this._applications = new Map();\n    }\n    /**\n     * Registers an application with a testability hook so that it can be tracked\n     * @param token token of application, root element\n     * @param testability Testability hook\n     */\n    registerApplication(token, testability) {\n        this._applications.set(token, testability);\n    }\n    /**\n     * Unregisters an application.\n     * @param token token of application, root element\n     */\n    unregisterApplication(token) {\n        this._applications.delete(token);\n    }\n    /**\n     * Unregisters all applications\n     */\n    unregisterAllApplications() {\n        this._applications.clear();\n    }\n    /**\n     * Get a testability hook associated with the application\n     * @param elem root element\n     */\n    getTestability(elem) {\n        return this._applications.get(elem) || null;\n    }\n    /**\n     * Get all registered testabilities\n     */\n    getAllTestabilities() {\n        return Array.from(this._applications.values());\n    }\n    /**\n     * Get all registered applications(root elements)\n     */\n    getAllRootElements() {\n        return Array.from(this._applications.keys());\n    }\n    /**\n     * Find testability of a node in the Tree\n     * @param elem node\n     * @param findInAncestors whether finding testability in ancestors if testability was not found in\n     * current node\n     */\n    findTestabilityInTree(elem, findInAncestors = true) {\n        return _testabilityGetter?.findTestabilityInTree(this, elem, findInAncestors) ?? null;\n    }\n}\nTestabilityRegistry.ɵfac = function TestabilityRegistry_Factory(t) { return new (t || TestabilityRegistry)(); };\nTestabilityRegistry.ɵprov = /*@__PURE__*/ ɵɵdefineInjectable({ token: TestabilityRegistry, factory: TestabilityRegistry.ɵfac, providedIn: 'platform' });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && setClassMetadata(TestabilityRegistry, [{\n        type: Injectable,\n        args: [{ providedIn: 'platform' }]\n    }], null, null); })();\n/**\n * Set the {@link GetTestability} implementation used by the Angular testing framework.\n * @publicApi\n */\nfunction setTestabilityGetter(getter) {\n    _testabilityGetter = getter;\n}\nlet _testabilityGetter;\n\nconst NG_DEV_MODE = typeof ngDevMode === 'undefined' || ngDevMode;\nlet _platformInjector = null;\n/**\n * Internal token to indicate whether having multiple bootstrapped platform should be allowed (only\n * one bootstrapped platform is allowed by default). This token helps to support SSR scenarios.\n */\nconst ALLOW_MULTIPLE_PLATFORMS = new InjectionToken('AllowMultipleToken');\n/**\n * Internal token that allows to register extra callbacks that should be invoked during the\n * `PlatformRef.destroy` operation. This token is needed to avoid a direct reference to the\n * `PlatformRef` class (i.e. register the callback via `PlatformRef.onDestroy`), thus making the\n * entire class tree-shakeable.\n */\nconst PLATFORM_DESTROY_LISTENERS = new InjectionToken('PlatformDestroyListeners');\n/**\n * A [DI token](guide/glossary#di-token \"DI token definition\") that provides a set of callbacks to\n * be called for every component that is bootstrapped.\n *\n * Each callback must take a `ComponentRef` instance and return nothing.\n *\n * `(componentRef: ComponentRef) => void`\n *\n * @publicApi\n */\nconst APP_BOOTSTRAP_LISTENER = new InjectionToken('appBootstrapListener');\nfunction compileNgModuleFactory(injector, options, moduleType) {\n    ngDevMode && assertNgModuleType(moduleType);\n    const moduleFactory = new NgModuleFactory(moduleType);\n    // All of the logic below is irrelevant for AOT-compiled code.\n    if (typeof ngJitMode !== 'undefined' && !ngJitMode) {\n        return Promise.resolve(moduleFactory);\n    }\n    const compilerOptions = injector.get(COMPILER_OPTIONS, []).concat(options);\n    // Configure the compiler to use the provided options. This call may fail when multiple modules\n    // are bootstrapped with incompatible options, as a component can only be compiled according to\n    // a single set of options.\n    setJitOptions({\n        defaultEncapsulation: _lastDefined(compilerOptions.map(opts => opts.defaultEncapsulation)),\n        preserveWhitespaces: _lastDefined(compilerOptions.map(opts => opts.preserveWhitespaces)),\n    });\n    if (isComponentResourceResolutionQueueEmpty()) {\n        return Promise.resolve(moduleFactory);\n    }\n    const compilerProviders = _mergeArrays(compilerOptions.map(o => o.providers));\n    // In case there are no compiler providers, we just return the module factory as\n    // there won't be any resource loader. This can happen with Ivy, because AOT compiled\n    // modules can be still passed through \"bootstrapModule\". In that case we shouldn't\n    // unnecessarily require the JIT compiler.\n    if (compilerProviders.length === 0) {\n        return Promise.resolve(moduleFactory);\n    }\n    const compiler = getCompilerFacade({\n        usage: 0 /* JitCompilerUsage.Decorator */,\n        kind: 'NgModule',\n        type: moduleType,\n    });\n    const compilerInjector = Injector.create({ providers: compilerProviders });\n    const resourceLoader = compilerInjector.get(compiler.ResourceLoader);\n    // The resource loader can also return a string while the \"resolveComponentResources\"\n    // always expects a promise. Therefore we need to wrap the returned value in a promise.\n    return resolveComponentResources(url => Promise.resolve(resourceLoader.get(url)))\n        .then(() => moduleFactory);\n}\nfunction publishDefaultGlobalUtils() {\n    ngDevMode && publishDefaultGlobalUtils$1();\n}\nfunction isBoundToModule(cf) {\n    return cf.isBoundToModule;\n}\n/**\n * A token for third-party components that can register themselves with NgProbe.\n *\n * @publicApi\n */\nclass NgProbeToken {\n    constructor(name, token) {\n        this.name = name;\n        this.token = token;\n    }\n}\n/**\n * Creates a platform.\n * Platforms must be created on launch using this function.\n *\n * @publicApi\n */\nfunction createPlatform(injector) {\n    if (_platformInjector && !_platformInjector.get(ALLOW_MULTIPLE_PLATFORMS, false)) {\n        throw new RuntimeError(400 /* RuntimeErrorCode.MULTIPLE_PLATFORMS */, ngDevMode &&\n            'There can be only one platform. Destroy the previous one to create a new one.');\n    }\n    publishDefaultGlobalUtils();\n    _platformInjector = injector;\n    const platform = injector.get(PlatformRef);\n    runPlatformInitializers(injector);\n    return platform;\n}\n/**\n * The goal of this function is to bootstrap a platform injector,\n * but avoid referencing `PlatformRef` class.\n * This function is needed for bootstrapping a Standalone Component.\n */\nfunction createOrReusePlatformInjector(providers = []) {\n    // If a platform injector already exists, it means that the platform\n    // is already bootstrapped and no additional actions are required.\n    if (_platformInjector)\n        return _platformInjector;\n    // Otherwise, setup a new platform injector and run platform initializers.\n    const injector = createPlatformInjector(providers);\n    _platformInjector = injector;\n    publishDefaultGlobalUtils();\n    runPlatformInitializers(injector);\n    return injector;\n}\nfunction runPlatformInitializers(injector) {\n    const inits = injector.get(PLATFORM_INITIALIZER, null);\n    if (inits) {\n        inits.forEach((init) => init());\n    }\n}\n/**\n * Internal create application API that implements the core application creation logic and optional\n * bootstrap logic.\n *\n * Platforms (such as `platform-browser`) may require different set of application and platform\n * providers for an application to function correctly. As a result, platforms may use this function\n * internally and supply the necessary providers during the bootstrap, while exposing\n * platform-specific APIs as a part of their public API.\n *\n * @returns A promise that returns an `ApplicationRef` instance once resolved.\n */\nfunction internalCreateApplication(config) {\n    const { rootComponent, appProviders, platformProviders } = config;\n    if (NG_DEV_MODE && rootComponent !== undefined) {\n        assertStandaloneComponentType(rootComponent);\n    }\n    const platformInjector = createOrReusePlatformInjector(platformProviders);\n    const ngZone = getNgZone('zone.js', getNgZoneOptions());\n    return ngZone.run(() => {\n        // Create root application injector based on a set of providers configured at the platform\n        // bootstrap level as well as providers passed to the bootstrap call by a user.\n        const allAppProviders = [\n            { provide: NgZone, useValue: ngZone },\n            ...(appProviders || []), //\n        ];\n        const envInjector = createEnvironmentInjector(allAppProviders, platformInjector, 'Environment Injector');\n        const exceptionHandler = envInjector.get(ErrorHandler, null);\n        if (NG_DEV_MODE && !exceptionHandler) {\n            throw new RuntimeError(402 /* RuntimeErrorCode.ERROR_HANDLER_NOT_FOUND */, 'No `ErrorHandler` found in the Dependency Injection tree.');\n        }\n        let onErrorSubscription;\n        ngZone.runOutsideAngular(() => {\n            onErrorSubscription = ngZone.onError.subscribe({\n                next: (error) => {\n                    exceptionHandler.handleError(error);\n                }\n            });\n        });\n        // If the whole platform is destroyed, invoke the `destroy` method\n        // for all bootstrapped applications as well.\n        const destroyListener = () => envInjector.destroy();\n        const onPlatformDestroyListeners = platformInjector.get(PLATFORM_DESTROY_LISTENERS);\n        onPlatformDestroyListeners.add(destroyListener);\n        envInjector.onDestroy(() => {\n            onErrorSubscription.unsubscribe();\n            onPlatformDestroyListeners.delete(destroyListener);\n        });\n        return _callAndReportToErrorHandler(exceptionHandler, ngZone, () => {\n            const initStatus = envInjector.get(ApplicationInitStatus);\n            initStatus.runInitializers();\n            return initStatus.donePromise.then(() => {\n                const localeId = envInjector.get(LOCALE_ID, DEFAULT_LOCALE_ID);\n                setLocaleId(localeId || DEFAULT_LOCALE_ID);\n                const appRef = envInjector.get(ApplicationRef);\n                if (rootComponent !== undefined) {\n                    appRef.bootstrap(rootComponent);\n                }\n                return appRef;\n            });\n        });\n    });\n}\n/**\n * Creates a factory for a platform. Can be used to provide or override `Providers` specific to\n * your application's runtime needs, such as `PLATFORM_INITIALIZER` and `PLATFORM_ID`.\n * @param parentPlatformFactory Another platform factory to modify. Allows you to compose factories\n * to build up configurations that might be required by different libraries or parts of the\n * application.\n * @param name Identifies the new platform factory.\n * @param providers A set of dependency providers for platforms created with the new factory.\n *\n * @publicApi\n */\nfunction createPlatformFactory(parentPlatformFactory, name, providers = []) {\n    const desc = `Platform: ${name}`;\n    const marker = new InjectionToken(desc);\n    return (extraProviders = []) => {\n        let platform = getPlatform();\n        if (!platform || platform.injector.get(ALLOW_MULTIPLE_PLATFORMS, false)) {\n            const platformProviders = [\n                ...providers,\n                ...extraProviders,\n                { provide: marker, useValue: true }\n            ];\n            if (parentPlatformFactory) {\n                parentPlatformFactory(platformProviders);\n            }\n            else {\n                createPlatform(createPlatformInjector(platformProviders, desc));\n            }\n        }\n        return assertPlatform(marker);\n    };\n}\n/**\n * Checks that there is currently a platform that contains the given token as a provider.\n *\n * @publicApi\n */\nfunction assertPlatform(requiredToken) {\n    const platform = getPlatform();\n    if (!platform) {\n        throw new RuntimeError(401 /* RuntimeErrorCode.PLATFORM_NOT_FOUND */, ngDevMode && 'No platform exists!');\n    }\n    if ((typeof ngDevMode === 'undefined' || ngDevMode) &&\n        !platform.injector.get(requiredToken, null)) {\n        throw new RuntimeError(400 /* RuntimeErrorCode.MULTIPLE_PLATFORMS */, 'A platform with a different configuration has been created. Please destroy it first.');\n    }\n    return platform;\n}\n/**\n * Helper function to create an instance of a platform injector (that maintains the 'platform'\n * scope).\n */\nfunction createPlatformInjector(providers = [], name) {\n    return Injector.create({\n        name,\n        providers: [\n            { provide: INJECTOR_SCOPE, useValue: 'platform' },\n            { provide: PLATFORM_DESTROY_LISTENERS, useValue: new Set([() => _platformInjector = null]) },\n            ...providers\n        ],\n    });\n}\n/**\n * Destroys the current Angular platform and all Angular applications on the page.\n * Destroys all modules and listeners registered with the platform.\n *\n * @publicApi\n */\nfunction destroyPlatform() {\n    getPlatform()?.destroy();\n}\n/**\n * Returns the current platform.\n *\n * @publicApi\n */\nfunction getPlatform() {\n    return _platformInjector?.get(PlatformRef) ?? null;\n}\n/**\n * The Angular platform is the entry point for Angular on a web page.\n * Each page has exactly one platform. Services (such as reflection) which are common\n * to every Angular application running on the page are bound in its scope.\n * A page's platform is initialized implicitly when a platform is created using a platform\n * factory such as `PlatformBrowser`, or explicitly by calling the `createPlatform()` function.\n *\n * @publicApi\n */\nclass PlatformRef {\n    /** @internal */\n    constructor(_injector) {\n        this._injector = _injector;\n        this._modules = [];\n        this._destroyListeners = [];\n        this._destroyed = false;\n    }\n    /**\n     * Creates an instance of an `@NgModule` for the given platform.\n     *\n     * @deprecated Passing NgModule factories as the `PlatformRef.bootstrapModuleFactory` function\n     *     argument is deprecated. Use the `PlatformRef.bootstrapModule` API instead.\n     */\n    bootstrapModuleFactory(moduleFactory, options) {\n        // Note: We need to create the NgZone _before_ we instantiate the module,\n        // as instantiating the module creates some providers eagerly.\n        // So we create a mini parent injector that just contains the new NgZone and\n        // pass that as parent to the NgModuleFactory.\n        const ngZone = getNgZone(options?.ngZone, getNgZoneOptions(options));\n        const providers = [{ provide: NgZone, useValue: ngZone }];\n        // Note: Create ngZoneInjector within ngZone.run so that all of the instantiated services are\n        // created within the Angular zone\n        // Do not try to replace ngZone.run with ApplicationRef#run because ApplicationRef would then be\n        // created outside of the Angular zone.\n        return ngZone.run(() => {\n            const ngZoneInjector = Injector.create({ providers: providers, parent: this.injector, name: moduleFactory.moduleType.name });\n            const moduleRef = moduleFactory.create(ngZoneInjector);\n            const exceptionHandler = moduleRef.injector.get(ErrorHandler, null);\n            if (!exceptionHandler) {\n                throw new RuntimeError(402 /* RuntimeErrorCode.ERROR_HANDLER_NOT_FOUND */, ngDevMode && 'No ErrorHandler. Is platform module (BrowserModule) included?');\n            }\n            ngZone.runOutsideAngular(() => {\n                const subscription = ngZone.onError.subscribe({\n                    next: (error) => {\n                        exceptionHandler.handleError(error);\n                    }\n                });\n                moduleRef.onDestroy(() => {\n                    remove(this._modules, moduleRef);\n                    subscription.unsubscribe();\n                });\n            });\n            return _callAndReportToErrorHandler(exceptionHandler, ngZone, () => {\n                const initStatus = moduleRef.injector.get(ApplicationInitStatus);\n                initStatus.runInitializers();\n                return initStatus.donePromise.then(() => {\n                    // If the `LOCALE_ID` provider is defined at bootstrap then we set the value for ivy\n                    const localeId = moduleRef.injector.get(LOCALE_ID, DEFAULT_LOCALE_ID);\n                    setLocaleId(localeId || DEFAULT_LOCALE_ID);\n                    this._moduleDoBootstrap(moduleRef);\n                    return moduleRef;\n                });\n            });\n        });\n    }\n    /**\n     * Creates an instance of an `@NgModule` for a given platform.\n     *\n     * @usageNotes\n     * ### Simple Example\n     *\n     * ```typescript\n     * @NgModule({\n     *   imports: [BrowserModule]\n     * })\n     * class MyModule {}\n     *\n     * let moduleRef = platformBrowser().bootstrapModule(MyModule);\n     * ```\n     *\n     */\n    bootstrapModule(moduleType, compilerOptions = []) {\n        const options = optionsReducer({}, compilerOptions);\n        return compileNgModuleFactory(this.injector, options, moduleType)\n            .then(moduleFactory => this.bootstrapModuleFactory(moduleFactory, options));\n    }\n    _moduleDoBootstrap(moduleRef) {\n        const appRef = moduleRef.injector.get(ApplicationRef);\n        if (moduleRef._bootstrapComponents.length > 0) {\n            moduleRef._bootstrapComponents.forEach(f => appRef.bootstrap(f));\n        }\n        else if (moduleRef.instance.ngDoBootstrap) {\n            moduleRef.instance.ngDoBootstrap(appRef);\n        }\n        else {\n            throw new RuntimeError(-403 /* RuntimeErrorCode.BOOTSTRAP_COMPONENTS_NOT_FOUND */, ngDevMode &&\n                `The module ${stringify(moduleRef.instance.constructor)} was bootstrapped, ` +\n                    `but it does not declare \"@NgModule.bootstrap\" components nor a \"ngDoBootstrap\" method. ` +\n                    `Please define one of these.`);\n        }\n        this._modules.push(moduleRef);\n    }\n    /**\n     * Registers a listener to be called when the platform is destroyed.\n     */\n    onDestroy(callback) {\n        this._destroyListeners.push(callback);\n    }\n    /**\n     * Retrieves the platform {@link Injector}, which is the parent injector for\n     * every Angular application on the page and provides singleton providers.\n     */\n    get injector() {\n        return this._injector;\n    }\n    /**\n     * Destroys the current Angular platform and all Angular applications on the page.\n     * Destroys all modules and listeners registered with the platform.\n     */\n    destroy() {\n        if (this._destroyed) {\n            throw new RuntimeError(404 /* RuntimeErrorCode.PLATFORM_ALREADY_DESTROYED */, ngDevMode && 'The platform has already been destroyed!');\n        }\n        this._modules.slice().forEach(module => module.destroy());\n        this._destroyListeners.forEach(listener => listener());\n        const destroyListeners = this._injector.get(PLATFORM_DESTROY_LISTENERS, null);\n        if (destroyListeners) {\n            destroyListeners.forEach(listener => listener());\n            destroyListeners.clear();\n        }\n        this._destroyed = true;\n    }\n    /**\n     * Indicates whether this instance was destroyed.\n     */\n    get destroyed() {\n        return this._destroyed;\n    }\n}\nPlatformRef.ɵfac = function PlatformRef_Factory(t) { return new (t || PlatformRef)(ɵɵinject(Injector)); };\nPlatformRef.ɵprov = /*@__PURE__*/ ɵɵdefineInjectable({ token: PlatformRef, factory: PlatformRef.ɵfac, providedIn: 'platform' });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && setClassMetadata(PlatformRef, [{\n        type: Injectable,\n        args: [{ providedIn: 'platform' }]\n    }], function () { return [{ type: Injector }]; }, null); })();\n// Transforms a set of `BootstrapOptions` (supported by the NgModule-based bootstrap APIs) ->\n// `NgZoneOptions` that are recognized by the NgZone constructor. Passing no options will result in\n// a set of default options returned.\nfunction getNgZoneOptions(options) {\n    return {\n        enableLongStackTrace: typeof ngDevMode === 'undefined' ? false : !!ngDevMode,\n        shouldCoalesceEventChangeDetection: !!(options && options.ngZoneEventCoalescing) || false,\n        shouldCoalesceRunChangeDetection: !!(options && options.ngZoneRunCoalescing) || false,\n    };\n}\nfunction getNgZone(ngZoneToUse, options) {\n    let ngZone;\n    if (ngZoneToUse === 'noop') {\n        ngZone = new NoopNgZone();\n    }\n    else {\n        ngZone = (ngZoneToUse === 'zone.js' ? undefined : ngZoneToUse) || new NgZone(options);\n    }\n    return ngZone;\n}\nfunction _callAndReportToErrorHandler(errorHandler, ngZone, callback) {\n    try {\n        const result = callback();\n        if (isPromise(result)) {\n            return result.catch((e) => {\n                ngZone.runOutsideAngular(() => errorHandler.handleError(e));\n                // rethrow as the exception handler might not do it\n                throw e;\n            });\n        }\n        return result;\n    }\n    catch (e) {\n        ngZone.runOutsideAngular(() => errorHandler.handleError(e));\n        // rethrow as the exception handler might not do it\n        throw e;\n    }\n}\nfunction optionsReducer(dst, objs) {\n    if (Array.isArray(objs)) {\n        dst = objs.reduce(optionsReducer, dst);\n    }\n    else {\n        dst = { ...dst, ...objs };\n    }\n    return dst;\n}\n/**\n * A reference to an Angular application running on a page.\n *\n * @usageNotes\n *\n * {@a is-stable-examples}\n * ### isStable examples and caveats\n *\n * Note two important points about `isStable`, demonstrated in the examples below:\n * - the application will never be stable if you start any kind\n * of recurrent asynchronous task when the application starts\n * (for example for a polling process, started with a `setInterval`, a `setTimeout`\n * or using RxJS operators like `interval`);\n * - the `isStable` Observable runs outside of the Angular zone.\n *\n * Let's imagine that you start a recurrent task\n * (here incrementing a counter, using RxJS `interval`),\n * and at the same time subscribe to `isStable`.\n *\n * ```\n * constructor(appRef: ApplicationRef) {\n *   appRef.isStable.pipe(\n *      filter(stable => stable)\n *   ).subscribe(() => console.log('App is stable now');\n *   interval(1000).subscribe(counter => console.log(counter));\n * }\n * ```\n * In this example, `isStable` will never emit `true`,\n * and the trace \"App is stable now\" will never get logged.\n *\n * If you want to execute something when the app is stable,\n * you have to wait for the application to be stable\n * before starting your polling process.\n *\n * ```\n * constructor(appRef: ApplicationRef) {\n *   appRef.isStable.pipe(\n *     first(stable => stable),\n *     tap(stable => console.log('App is stable now')),\n *     switchMap(() => interval(1000))\n *   ).subscribe(counter => console.log(counter));\n * }\n * ```\n * In this example, the trace \"App is stable now\" will be logged\n * and then the counter starts incrementing every second.\n *\n * Note also that this Observable runs outside of the Angular zone,\n * which means that the code in the subscription\n * to this Observable will not trigger the change detection.\n *\n * Let's imagine that instead of logging the counter value,\n * you update a field of your component\n * and display it in its template.\n *\n * ```\n * constructor(appRef: ApplicationRef) {\n *   appRef.isStable.pipe(\n *     first(stable => stable),\n *     switchMap(() => interval(1000))\n *   ).subscribe(counter => this.value = counter);\n * }\n * ```\n * As the `isStable` Observable runs outside the zone,\n * the `value` field will be updated properly,\n * but the template will not be refreshed!\n *\n * You'll have to manually trigger the change detection to update the template.\n *\n * ```\n * constructor(appRef: ApplicationRef, cd: ChangeDetectorRef) {\n *   appRef.isStable.pipe(\n *     first(stable => stable),\n *     switchMap(() => interval(1000))\n *   ).subscribe(counter => {\n *     this.value = counter;\n *     cd.detectChanges();\n *   });\n * }\n * ```\n *\n * Or make the subscription callback run inside the zone.\n *\n * ```\n * constructor(appRef: ApplicationRef, zone: NgZone) {\n *   appRef.isStable.pipe(\n *     first(stable => stable),\n *     switchMap(() => interval(1000))\n *   ).subscribe(counter => zone.run(() => this.value = counter));\n * }\n * ```\n *\n * @publicApi\n */\nclass ApplicationRef {\n    /**\n     * Indicates whether this instance was destroyed.\n     */\n    get destroyed() {\n        return this._destroyed;\n    }\n    /**\n     * The `EnvironmentInjector` used to create this application.\n     */\n    get injector() {\n        return this._injector;\n    }\n    /** @internal */\n    constructor(_zone, _injector, _exceptionHandler) {\n        this._zone = _zone;\n        this._injector = _injector;\n        this._exceptionHandler = _exceptionHandler;\n        /** @internal */\n        this._bootstrapListeners = [];\n        this._views = [];\n        this._runningTick = false;\n        this._stable = true;\n        this._destroyed = false;\n        this._destroyListeners = [];\n        /**\n         * Get a list of component types registered to this application.\n         * This list is populated even before the component is created.\n         */\n        this.componentTypes = [];\n        /**\n         * Get a list of components registered to this application.\n         */\n        this.components = [];\n        this._onMicrotaskEmptySubscription = this._zone.onMicrotaskEmpty.subscribe({\n            next: () => {\n                this._zone.run(() => {\n                    this.tick();\n                });\n            }\n        });\n        const isCurrentlyStable = new Observable((observer) => {\n            this._stable = this._zone.isStable && !this._zone.hasPendingMacrotasks &&\n                !this._zone.hasPendingMicrotasks;\n            this._zone.runOutsideAngular(() => {\n                observer.next(this._stable);\n                observer.complete();\n            });\n        });\n        const isStable = new Observable((observer) => {\n            // Create the subscription to onStable outside the Angular Zone so that\n            // the callback is run outside the Angular Zone.\n            let stableSub;\n            this._zone.runOutsideAngular(() => {\n                stableSub = this._zone.onStable.subscribe(() => {\n                    NgZone.assertNotInAngularZone();\n                    // Check whether there are no pending macro/micro tasks in the next tick\n                    // to allow for NgZone to update the state.\n                    scheduleMicroTask(() => {\n                        if (!this._stable && !this._zone.hasPendingMacrotasks &&\n                            !this._zone.hasPendingMicrotasks) {\n                            this._stable = true;\n                            observer.next(true);\n                        }\n                    });\n                });\n            });\n            const unstableSub = this._zone.onUnstable.subscribe(() => {\n                NgZone.assertInAngularZone();\n                if (this._stable) {\n                    this._stable = false;\n                    this._zone.runOutsideAngular(() => {\n                        observer.next(false);\n                    });\n                }\n            });\n            return () => {\n                stableSub.unsubscribe();\n                unstableSub.unsubscribe();\n            };\n        });\n        this.isStable =\n            merge$1(isCurrentlyStable, isStable.pipe(share()));\n    }\n    /**\n     * Bootstrap a component onto the element identified by its selector or, optionally, to a\n     * specified element.\n     *\n     * @usageNotes\n     * ### Bootstrap process\n     *\n     * When bootstrapping a component, Angular mounts it onto a target DOM element\n     * and kicks off automatic change detection. The target DOM element can be\n     * provided using the `rootSelectorOrNode` argument.\n     *\n     * If the target DOM element is not provided, Angular tries to find one on a page\n     * using the `selector` of the component that is being bootstrapped\n     * (first matched element is used).\n     *\n     * ### Example\n     *\n     * Generally, we define the component to bootstrap in the `bootstrap` array of `NgModule`,\n     * but it requires us to know the component while writing the application code.\n     *\n     * Imagine a situation where we have to wait for an API call to decide about the component to\n     * bootstrap. We can use the `ngDoBootstrap` hook of the `NgModule` and call this method to\n     * dynamically bootstrap a component.\n     *\n     * {@example core/ts/platform/platform.ts region='componentSelector'}\n     *\n     * Optionally, a component can be mounted onto a DOM element that does not match the\n     * selector of the bootstrapped component.\n     *\n     * In the following example, we are providing a CSS selector to match the target element.\n     *\n     * {@example core/ts/platform/platform.ts region='cssSelector'}\n     *\n     * While in this example, we are providing reference to a DOM node.\n     *\n     * {@example core/ts/platform/platform.ts region='domNode'}\n     */\n    bootstrap(componentOrFactory, rootSelectorOrNode) {\n        NG_DEV_MODE && this.warnIfDestroyed();\n        const isComponentFactory = componentOrFactory instanceof ComponentFactory$1;\n        const initStatus = this._injector.get(ApplicationInitStatus);\n        if (!initStatus.done) {\n            const standalone = !isComponentFactory && isStandalone(componentOrFactory);\n            const errorMessage = 'Cannot bootstrap as there are still asynchronous initializers running.' +\n                (standalone ? '' :\n                    ' Bootstrap components in the `ngDoBootstrap` method of the root module.');\n            throw new RuntimeError(405 /* RuntimeErrorCode.ASYNC_INITIALIZERS_STILL_RUNNING */, NG_DEV_MODE && errorMessage);\n        }\n        let componentFactory;\n        if (isComponentFactory) {\n            componentFactory = componentOrFactory;\n        }\n        else {\n            const resolver = this._injector.get(ComponentFactoryResolver$1);\n            componentFactory = resolver.resolveComponentFactory(componentOrFactory);\n        }\n        this.componentTypes.push(componentFactory.componentType);\n        // Create a factory associated with the current module if it's not bound to some other\n        const ngModule = isBoundToModule(componentFactory) ? undefined : this._injector.get(NgModuleRef$1);\n        const selectorOrNode = rootSelectorOrNode || componentFactory.selector;\n        const compRef = componentFactory.create(Injector.NULL, [], selectorOrNode, ngModule);\n        const nativeElement = compRef.location.nativeElement;\n        const testability = compRef.injector.get(TESTABILITY, null);\n        testability?.registerApplication(nativeElement);\n        compRef.onDestroy(() => {\n            this.detachView(compRef.hostView);\n            remove(this.components, compRef);\n            testability?.unregisterApplication(nativeElement);\n        });\n        this._loadComponent(compRef);\n        if (typeof ngDevMode === 'undefined' || ngDevMode) {\n            const _console = this._injector.get(Console);\n            _console.log(`Angular is running in development mode. Call enableProdMode() to enable production mode.`);\n        }\n        return compRef;\n    }\n    /**\n     * Invoke this method to explicitly process change detection and its side-effects.\n     *\n     * In development mode, `tick()` also performs a second change detection cycle to ensure that no\n     * further changes are detected. If additional changes are picked up during this second cycle,\n     * bindings in the app have side-effects that cannot be resolved in a single change detection\n     * pass.\n     * In this case, Angular throws an error, since an Angular application can only have one change\n     * detection pass during which all change detection must complete.\n     */\n    tick() {\n        NG_DEV_MODE && this.warnIfDestroyed();\n        if (this._runningTick) {\n            throw new RuntimeError(101 /* RuntimeErrorCode.RECURSIVE_APPLICATION_REF_TICK */, ngDevMode && 'ApplicationRef.tick is called recursively');\n        }\n        try {\n            this._runningTick = true;\n            for (let view of this._views) {\n                view.detectChanges();\n            }\n            if (typeof ngDevMode === 'undefined' || ngDevMode) {\n                for (let view of this._views) {\n                    view.checkNoChanges();\n                }\n            }\n        }\n        catch (e) {\n            // Attention: Don't rethrow as it could cancel subscriptions to Observables!\n            this._zone.runOutsideAngular(() => this._exceptionHandler.handleError(e));\n        }\n        finally {\n            this._runningTick = false;\n        }\n    }\n    /**\n     * Attaches a view so that it will be dirty checked.\n     * The view will be automatically detached when it is destroyed.\n     * This will throw if the view is already attached to a ViewContainer.\n     */\n    attachView(viewRef) {\n        NG_DEV_MODE && this.warnIfDestroyed();\n        const view = viewRef;\n        this._views.push(view);\n        view.attachToAppRef(this);\n    }\n    /**\n     * Detaches a view from dirty checking again.\n     */\n    detachView(viewRef) {\n        NG_DEV_MODE && this.warnIfDestroyed();\n        const view = viewRef;\n        remove(this._views, view);\n        view.detachFromAppRef();\n    }\n    _loadComponent(componentRef) {\n        this.attachView(componentRef.hostView);\n        this.tick();\n        this.components.push(componentRef);\n        // Get the listeners lazily to prevent DI cycles.\n        const listeners = this._injector.get(APP_BOOTSTRAP_LISTENER, []);\n        if (ngDevMode && !Array.isArray(listeners)) {\n            throw new RuntimeError(-209 /* RuntimeErrorCode.INVALID_MULTI_PROVIDER */, 'Unexpected type of the `APP_BOOTSTRAP_LISTENER` token value ' +\n                `(expected an array, but got ${typeof listeners}). ` +\n                'Please check that the `APP_BOOTSTRAP_LISTENER` token is configured as a ' +\n                '`multi: true` provider.');\n        }\n        listeners.push(...this._bootstrapListeners);\n        listeners.forEach((listener) => listener(componentRef));\n    }\n    /** @internal */\n    ngOnDestroy() {\n        if (this._destroyed)\n            return;\n        try {\n            // Call all the lifecycle hooks.\n            this._destroyListeners.forEach(listener => listener());\n            // Destroy all registered views.\n            this._views.slice().forEach((view) => view.destroy());\n            this._onMicrotaskEmptySubscription.unsubscribe();\n        }\n        finally {\n            // Indicate that this instance is destroyed.\n            this._destroyed = true;\n            // Release all references.\n            this._views = [];\n            this._bootstrapListeners = [];\n            this._destroyListeners = [];\n        }\n    }\n    /**\n     * Registers a listener to be called when an instance is destroyed.\n     *\n     * @param callback A callback function to add as a listener.\n     * @returns A function which unregisters a listener.\n     *\n     * @internal\n     */\n    onDestroy(callback) {\n        NG_DEV_MODE && this.warnIfDestroyed();\n        this._destroyListeners.push(callback);\n        return () => remove(this._destroyListeners, callback);\n    }\n    /**\n     * Destroys an Angular application represented by this `ApplicationRef`. Calling this function\n     * will destroy the associated environment injectors as well as all the bootstrapped components\n     * with their views.\n     */\n    destroy() {\n        if (this._destroyed) {\n            throw new RuntimeError(406 /* RuntimeErrorCode.APPLICATION_REF_ALREADY_DESTROYED */, ngDevMode && 'This instance of the `ApplicationRef` has already been destroyed.');\n        }\n        const injector = this._injector;\n        // Check that this injector instance supports destroy operation.\n        if (injector.destroy && !injector.destroyed) {\n            // Destroying an underlying injector will trigger the `ngOnDestroy` lifecycle\n            // hook, which invokes the remaining cleanup actions.\n            injector.destroy();\n        }\n    }\n    /**\n     * Returns the number of attached views.\n     */\n    get viewCount() {\n        return this._views.length;\n    }\n    warnIfDestroyed() {\n        if (NG_DEV_MODE && this._destroyed) {\n            console.warn(formatRuntimeError(406 /* RuntimeErrorCode.APPLICATION_REF_ALREADY_DESTROYED */, 'This instance of the `ApplicationRef` has already been destroyed.'));\n        }\n    }\n}\nApplicationRef.ɵfac = function ApplicationRef_Factory(t) { return new (t || ApplicationRef)(ɵɵinject(NgZone), ɵɵinject(EnvironmentInjector), ɵɵinject(ErrorHandler)); };\nApplicationRef.ɵprov = /*@__PURE__*/ ɵɵdefineInjectable({ token: ApplicationRef, factory: ApplicationRef.ɵfac, providedIn: 'root' });\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && setClassMetadata(ApplicationRef, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: NgZone }, { type: EnvironmentInjector }, { type: ErrorHandler }]; }, null); })();\nfunction remove(list, el) {\n    const index = list.indexOf(el);\n    if (index > -1) {\n        list.splice(index, 1);\n    }\n}\nfunction _lastDefined(args) {\n    for (let i = args.length - 1; i >= 0; i--) {\n        if (args[i] !== undefined) {\n            return args[i];\n        }\n    }\n    return undefined;\n}\nfunction _mergeArrays(parts) {\n    const result = [];\n    parts.forEach((part) => part && result.push(...part));\n    return result;\n}\n\n/**\n * Returns whether Angular is in development mode.\n *\n * By default, this is true, unless `enableProdMode` is invoked prior to calling this method or the\n * application is built using the Angular CLI with the `optimization` option.\n * @see {@link cli/build ng build}\n *\n * @publicApi\n */\nfunction isDevMode() {\n    return typeof ngDevMode === 'undefined' || !!ngDevMode;\n}\n/**\n * Disable Angular's development mode, which turns off assertions and other\n * checks within the framework.\n *\n * One important assertion this disables verifies that a change detection pass\n * does not result in additional changes to any bindings (also known as\n * unidirectional data flow).\n *\n * Using this method is discouraged as the Angular CLI will set production mode when using the\n * `optimization` option.\n * @see {@link cli/build ng build}\n *\n * @publicApi\n */\nfunction enableProdMode() {\n    // The below check is there so when ngDevMode is set via terser\n    // `global['ngDevMode'] = false;` is also dropped.\n    if (typeof ngDevMode === 'undefined' || ngDevMode) {\n        _global['ngDevMode'] = false;\n    }\n}\n\n// Public API for Zone\n\n// Public API for render\n\n/**\n * Returns the NgModuleFactory with the given id (specified using [@NgModule.id\n * field](api/core/NgModule#id)), if it exists and has been loaded. Factories for NgModules that do\n * not specify an `id` cannot be retrieved. Throws if an NgModule cannot be found.\n * @publicApi\n * @deprecated Use `getNgModuleById` instead.\n */\nfunction getModuleFactory(id) {\n    const type = getRegisteredNgModuleType(id);\n    if (!type)\n        throw noModuleError(id);\n    return new NgModuleFactory(type);\n}\n/**\n * Returns the NgModule class with the given id (specified using [@NgModule.id\n * field](api/core/NgModule#id)), if it exists and has been loaded. Classes for NgModules that do\n * not specify an `id` cannot be retrieved. Throws if an NgModule cannot be found.\n * @publicApi\n */\nfunction getNgModuleById(id) {\n    const type = getRegisteredNgModuleType(id);\n    if (!type)\n        throw noModuleError(id);\n    return type;\n}\nfunction noModuleError(id) {\n    return new Error(`No module with ID ${id} loaded`);\n}\n\n/**\n * Base class that provides change detection functionality.\n * A change-detection tree collects all views that are to be checked for changes.\n * Use the methods to add and remove views from the tree, initiate change-detection,\n * and explicitly mark views as _dirty_, meaning that they have changed and need to be re-rendered.\n *\n * @see [Using change detection hooks](guide/lifecycle-hooks#using-change-detection-hooks)\n * @see [Defining custom change detection](guide/lifecycle-hooks#defining-custom-change-detection)\n *\n * @usageNotes\n *\n * The following examples demonstrate how to modify default change-detection behavior\n * to perform explicit detection when needed.\n *\n * ### Use `markForCheck()` with `CheckOnce` strategy\n *\n * The following example sets the `OnPush` change-detection strategy for a component\n * (`CheckOnce`, rather than the default `CheckAlways`), then forces a second check\n * after an interval. See [live demo](https://plnkr.co/edit/GC512b?p=preview).\n *\n * <code-example path=\"core/ts/change_detect/change-detection.ts\"\n * region=\"mark-for-check\"></code-example>\n *\n * ### Detach change detector to limit how often check occurs\n *\n * The following example defines a component with a large list of read-only data\n * that is expected to change constantly, many times per second.\n * To improve performance, we want to check and update the list\n * less often than the changes actually occur. To do that, we detach\n * the component's change detector and perform an explicit local check every five seconds.\n *\n * <code-example path=\"core/ts/change_detect/change-detection.ts\" region=\"detach\"></code-example>\n *\n *\n * ### Reattaching a detached component\n *\n * The following example creates a component displaying live data.\n * The component detaches its change detector from the main change detector tree\n * when the `live` property is set to false, and reattaches it when the property\n * becomes true.\n *\n * <code-example path=\"core/ts/change_detect/change-detection.ts\" region=\"reattach\"></code-example>\n *\n * @publicApi\n */\nclass ChangeDetectorRef {\n}\n/**\n * @internal\n * @nocollapse\n */\nChangeDetectorRef.__NG_ELEMENT_ID__ = injectChangeDetectorRef;\n/** Returns a ChangeDetectorRef (a.k.a. a ViewRef) */\nfunction injectChangeDetectorRef(flags) {\n    return createViewRef(getCurrentTNode(), getLView(), (flags & 16 /* InternalInjectFlags.ForPipe */) === 16 /* InternalInjectFlags.ForPipe */);\n}\n/**\n * Creates a ViewRef and stores it on the injector as ChangeDetectorRef (public alias).\n *\n * @param tNode The node that is requesting a ChangeDetectorRef\n * @param lView The view to which the node belongs\n * @param isPipe Whether the view is being injected into a pipe.\n * @returns The ChangeDetectorRef to use\n */\nfunction createViewRef(tNode, lView, isPipe) {\n    if (isComponentHost(tNode) && !isPipe) {\n        // The LView represents the location where the component is declared.\n        // Instead we want the LView for the component View and so we need to look it up.\n        const componentView = getComponentLViewByIndex(tNode.index, lView); // look down\n        return new ViewRef$1(componentView, componentView);\n    }\n    else if (tNode.type & (3 /* TNodeType.AnyRNode */ | 12 /* TNodeType.AnyContainer */ | 32 /* TNodeType.Icu */)) {\n        // The LView represents the location where the injection is requested from.\n        // We need to locate the containing LView (in case where the `lView` is an embedded view)\n        const hostComponentView = lView[DECLARATION_COMPONENT_VIEW]; // look up\n        return new ViewRef$1(hostComponentView, lView);\n    }\n    return null;\n}\n\n/**\n * Represents an Angular [view](guide/glossary#view \"Definition\").\n *\n * @see {@link ChangeDetectorRef#usage-notes Change detection usage}\n *\n * @publicApi\n */\nclass ViewRef extends ChangeDetectorRef {\n}\n/**\n * Represents an Angular [view](guide/glossary#view) in a view container.\n * An [embedded view](guide/glossary#view-hierarchy) can be referenced from a component\n * other than the hosting component whose template defines it, or it can be defined\n * independently by a `TemplateRef`.\n *\n * Properties of elements in a view can change, but the structure (number and order) of elements in\n * a view cannot. Change the structure of elements by inserting, moving, or\n * removing nested views in a view container.\n *\n * @see `ViewContainerRef`\n *\n * @usageNotes\n *\n * The following template breaks down into two separate `TemplateRef` instances,\n * an outer one and an inner one.\n *\n * ```\n * Count: {{items.length}}\n * <ul>\n *   <li *ngFor=\"let  item of items\">{{item}}</li>\n * </ul>\n * ```\n *\n * This is the outer `TemplateRef`:\n *\n * ```\n * Count: {{items.length}}\n * <ul>\n *   <ng-template ngFor let-item [ngForOf]=\"items\"></ng-template>\n * </ul>\n * ```\n *\n * This is the inner `TemplateRef`:\n *\n * ```\n *   <li>{{item}}</li>\n * ```\n *\n * The outer and inner `TemplateRef` instances are assembled into views as follows:\n *\n * ```\n * <!-- ViewRef: outer-0 -->\n * Count: 2\n * <ul>\n *   <ng-template view-container-ref></ng-template>\n *   <!-- ViewRef: inner-1 --><li>first</li><!-- /ViewRef: inner-1 -->\n *   <!-- ViewRef: inner-2 --><li>second</li><!-- /ViewRef: inner-2 -->\n * </ul>\n * <!-- /ViewRef: outer-0 -->\n * ```\n * @publicApi\n */\nclass EmbeddedViewRef extends ViewRef {\n}\n\n// Public API for compiler\n\n// This file exists for easily patching NgModuleFactoryLoader in g3\nvar ng_module_factory_loader_impl = {};\n\n/**\n * @publicApi\n */\nclass DebugEventListener {\n    constructor(name, callback) {\n        this.name = name;\n        this.callback = callback;\n    }\n}\n/**\n * @publicApi\n */\nfunction asNativeElements(debugEls) {\n    return debugEls.map((el) => el.nativeElement);\n}\n/**\n * @publicApi\n */\nclass DebugNode {\n    constructor(nativeNode) {\n        this.nativeNode = nativeNode;\n    }\n    /**\n     * The `DebugElement` parent. Will be `null` if this is the root element.\n     */\n    get parent() {\n        const parent = this.nativeNode.parentNode;\n        return parent ? new DebugElement(parent) : null;\n    }\n    /**\n     * The host dependency injector. For example, the root element's component instance injector.\n     */\n    get injector() {\n        return getInjector(this.nativeNode);\n    }\n    /**\n     * The element's own component instance, if it has one.\n     */\n    get componentInstance() {\n        const nativeElement = this.nativeNode;\n        return nativeElement &&\n            (getComponent(nativeElement) || getOwningComponent(nativeElement));\n    }\n    /**\n     * An object that provides parent context for this element. Often an ancestor component instance\n     * that governs this element.\n     *\n     * When an element is repeated within *ngFor, the context is an `NgForOf` whose `$implicit`\n     * property is the value of the row instance value. For example, the `hero` in `*ngFor=\"let hero\n     * of heroes\"`.\n     */\n    get context() {\n        return getComponent(this.nativeNode) || getContext(this.nativeNode);\n    }\n    /**\n     * The callbacks attached to the component's @Output properties and/or the element's event\n     * properties.\n     */\n    get listeners() {\n        return getListeners(this.nativeNode).filter(listener => listener.type === 'dom');\n    }\n    /**\n     * Dictionary of objects associated with template local variables (e.g. #foo), keyed by the local\n     * variable name.\n     */\n    get references() {\n        return getLocalRefs(this.nativeNode);\n    }\n    /**\n     * This component's injector lookup tokens. Includes the component itself plus the tokens that the\n     * component lists in its providers metadata.\n     */\n    get providerTokens() {\n        return getInjectionTokens(this.nativeNode);\n    }\n}\n/**\n * @publicApi\n *\n * @see [Component testing scenarios](guide/testing-components-scenarios)\n * @see [Basics of testing components](guide/testing-components-basics)\n * @see [Testing utility APIs](guide/testing-utility-apis)\n */\nclass DebugElement extends DebugNode {\n    constructor(nativeNode) {\n        ngDevMode && assertDomNode(nativeNode);\n        super(nativeNode);\n    }\n    /**\n     * The underlying DOM element at the root of the component.\n     */\n    get nativeElement() {\n        return this.nativeNode.nodeType == Node.ELEMENT_NODE ? this.nativeNode : null;\n    }\n    /**\n     * The element tag name, if it is an element.\n     */\n    get name() {\n        const context = getLContext(this.nativeNode);\n        const lView = context ? context.lView : null;\n        if (lView !== null) {\n            const tData = lView[TVIEW].data;\n            const tNode = tData[context.nodeIndex];\n            return tNode.value;\n        }\n        else {\n            return this.nativeNode.nodeName;\n        }\n    }\n    /**\n     *  Gets a map of property names to property values for an element.\n     *\n     *  This map includes:\n     *  - Regular property bindings (e.g. `[id]=\"id\"`)\n     *  - Host property bindings (e.g. `host: { '[id]': \"id\" }`)\n     *  - Interpolated property bindings (e.g. `id=\"{{ value }}\")\n     *\n     *  It does not include:\n     *  - input property bindings (e.g. `[myCustomInput]=\"value\"`)\n     *  - attribute bindings (e.g. `[attr.role]=\"menu\"`)\n     */\n    get properties() {\n        const context = getLContext(this.nativeNode);\n        const lView = context ? context.lView : null;\n        if (lView === null) {\n            return {};\n        }\n        const tData = lView[TVIEW].data;\n        const tNode = tData[context.nodeIndex];\n        const properties = {};\n        // Collect properties from the DOM.\n        copyDomProperties(this.nativeElement, properties);\n        // Collect properties from the bindings. This is needed for animation renderer which has\n        // synthetic properties which don't get reflected into the DOM.\n        collectPropertyBindings(properties, tNode, lView, tData);\n        return properties;\n    }\n    /**\n     *  A map of attribute names to attribute values for an element.\n     */\n    get attributes() {\n        const attributes = {};\n        const element = this.nativeElement;\n        if (!element) {\n            return attributes;\n        }\n        const context = getLContext(element);\n        const lView = context ? context.lView : null;\n        if (lView === null) {\n            return {};\n        }\n        const tNodeAttrs = lView[TVIEW].data[context.nodeIndex].attrs;\n        const lowercaseTNodeAttrs = [];\n        // For debug nodes we take the element's attribute directly from the DOM since it allows us\n        // to account for ones that weren't set via bindings (e.g. ViewEngine keeps track of the ones\n        // that are set through `Renderer2`). The problem is that the browser will lowercase all names,\n        // however since we have the attributes already on the TNode, we can preserve the case by going\n        // through them once, adding them to the `attributes` map and putting their lower-cased name\n        // into an array. Afterwards when we're going through the native DOM attributes, we can check\n        // whether we haven't run into an attribute already through the TNode.\n        if (tNodeAttrs) {\n            let i = 0;\n            while (i < tNodeAttrs.length) {\n                const attrName = tNodeAttrs[i];\n                // Stop as soon as we hit a marker. We only care about the regular attributes. Everything\n                // else will be handled below when we read the final attributes off the DOM.\n                if (typeof attrName !== 'string')\n                    break;\n                const attrValue = tNodeAttrs[i + 1];\n                attributes[attrName] = attrValue;\n                lowercaseTNodeAttrs.push(attrName.toLowerCase());\n                i += 2;\n            }\n        }\n        for (const attr of element.attributes) {\n            // Make sure that we don't assign the same attribute both in its\n            // case-sensitive form and the lower-cased one from the browser.\n            if (!lowercaseTNodeAttrs.includes(attr.name)) {\n                attributes[attr.name] = attr.value;\n            }\n        }\n        return attributes;\n    }\n    /**\n     * The inline styles of the DOM element.\n     *\n     * Will be `null` if there is no `style` property on the underlying DOM element.\n     *\n     * @see [ElementCSSInlineStyle](https://developer.mozilla.org/en-US/docs/Web/API/ElementCSSInlineStyle/style)\n     */\n    get styles() {\n        if (this.nativeElement && this.nativeElement.style) {\n            return this.nativeElement.style;\n        }\n        return {};\n    }\n    /**\n     * A map containing the class names on the element as keys.\n     *\n     * This map is derived from the `className` property of the DOM element.\n     *\n     * Note: The values of this object will always be `true`. The class key will not appear in the KV\n     * object if it does not exist on the element.\n     *\n     * @see [Element.className](https://developer.mozilla.org/en-US/docs/Web/API/Element/className)\n     */\n    get classes() {\n        const result = {};\n        const element = this.nativeElement;\n        // SVG elements return an `SVGAnimatedString` instead of a plain string for the `className`.\n        const className = element.className;\n        const classes = typeof className !== 'string' ? className.baseVal.split(' ') : className.split(' ');\n        classes.forEach((value) => result[value] = true);\n        return result;\n    }\n    /**\n     * The `childNodes` of the DOM element as a `DebugNode` array.\n     *\n     * @see [Node.childNodes](https://developer.mozilla.org/en-US/docs/Web/API/Node/childNodes)\n     */\n    get childNodes() {\n        const childNodes = this.nativeNode.childNodes;\n        const children = [];\n        for (let i = 0; i < childNodes.length; i++) {\n            const element = childNodes[i];\n            children.push(getDebugNode(element));\n        }\n        return children;\n    }\n    /**\n     * The immediate `DebugElement` children. Walk the tree by descending through `children`.\n     */\n    get children() {\n        const nativeElement = this.nativeElement;\n        if (!nativeElement)\n            return [];\n        const childNodes = nativeElement.children;\n        const children = [];\n        for (let i = 0; i < childNodes.length; i++) {\n            const element = childNodes[i];\n            children.push(getDebugNode(element));\n        }\n        return children;\n    }\n    /**\n     * @returns the first `DebugElement` that matches the predicate at any depth in the subtree.\n     */\n    query(predicate) {\n        const results = this.queryAll(predicate);\n        return results[0] || null;\n    }\n    /**\n     * @returns All `DebugElement` matches for the predicate at any depth in the subtree.\n     */\n    queryAll(predicate) {\n        const matches = [];\n        _queryAll(this, predicate, matches, true);\n        return matches;\n    }\n    /**\n     * @returns All `DebugNode` matches for the predicate at any depth in the subtree.\n     */\n    queryAllNodes(predicate) {\n        const matches = [];\n        _queryAll(this, predicate, matches, false);\n        return matches;\n    }\n    /**\n     * Triggers the event by its name if there is a corresponding listener in the element's\n     * `listeners` collection.\n     *\n     * If the event lacks a listener or there's some other problem, consider\n     * calling `nativeElement.dispatchEvent(eventObject)`.\n     *\n     * @param eventName The name of the event to trigger\n     * @param eventObj The _event object_ expected by the handler\n     *\n     * @see [Testing components scenarios](guide/testing-components-scenarios#trigger-event-handler)\n     */\n    triggerEventHandler(eventName, eventObj) {\n        const node = this.nativeNode;\n        const invokedListeners = [];\n        this.listeners.forEach(listener => {\n            if (listener.name === eventName) {\n                const callback = listener.callback;\n                callback.call(node, eventObj);\n                invokedListeners.push(callback);\n            }\n        });\n        // We need to check whether `eventListeners` exists, because it's something\n        // that Zone.js only adds to `EventTarget` in browser environments.\n        if (typeof node.eventListeners === 'function') {\n            // Note that in Ivy we wrap event listeners with a call to `event.preventDefault` in some\n            // cases. We use '__ngUnwrap__' as a special token that gives us access to the actual event\n            // listener.\n            node.eventListeners(eventName).forEach((listener) => {\n                // In order to ensure that we can detect the special __ngUnwrap__ token described above, we\n                // use `toString` on the listener and see if it contains the token. We use this approach to\n                // ensure that it still worked with compiled code since it cannot remove or rename string\n                // literals. We also considered using a special function name (i.e. if(listener.name ===\n                // special)) but that was more cumbersome and we were also concerned the compiled code could\n                // strip the name, turning the condition in to (\"\" === \"\") and always returning true.\n                if (listener.toString().indexOf('__ngUnwrap__') !== -1) {\n                    const unwrappedListener = listener('__ngUnwrap__');\n                    return invokedListeners.indexOf(unwrappedListener) === -1 &&\n                        unwrappedListener.call(node, eventObj);\n                }\n            });\n        }\n    }\n}\nfunction copyDomProperties(element, properties) {\n    if (element) {\n        // Skip own properties (as those are patched)\n        let obj = Object.getPrototypeOf(element);\n        const NodePrototype = Node.prototype;\n        while (obj !== null && obj !== NodePrototype) {\n            const descriptors = Object.getOwnPropertyDescriptors(obj);\n            for (let key in descriptors) {\n                if (!key.startsWith('__') && !key.startsWith('on')) {\n                    // don't include properties starting with `__` and `on`.\n                    // `__` are patched values which should not be included.\n                    // `on` are listeners which also should not be included.\n                    const value = element[key];\n                    if (isPrimitiveValue(value)) {\n                        properties[key] = value;\n                    }\n                }\n            }\n            obj = Object.getPrototypeOf(obj);\n        }\n    }\n}\nfunction isPrimitiveValue(value) {\n    return typeof value === 'string' || typeof value === 'boolean' || typeof value === 'number' ||\n        value === null;\n}\nfunction _queryAll(parentElement, predicate, matches, elementsOnly) {\n    const context = getLContext(parentElement.nativeNode);\n    const lView = context ? context.lView : null;\n    if (lView !== null) {\n        const parentTNode = lView[TVIEW].data[context.nodeIndex];\n        _queryNodeChildren(parentTNode, lView, predicate, matches, elementsOnly, parentElement.nativeNode);\n    }\n    else {\n        // If the context is null, then `parentElement` was either created with Renderer2 or native DOM\n        // APIs.\n        _queryNativeNodeDescendants(parentElement.nativeNode, predicate, matches, elementsOnly);\n    }\n}\n/**\n * Recursively match the current TNode against the predicate, and goes on with the next ones.\n *\n * @param tNode the current TNode\n * @param lView the LView of this TNode\n * @param predicate the predicate to match\n * @param matches the list of positive matches\n * @param elementsOnly whether only elements should be searched\n * @param rootNativeNode the root native node on which predicate should not be matched\n */\nfunction _queryNodeChildren(tNode, lView, predicate, matches, elementsOnly, rootNativeNode) {\n    ngDevMode && assertTNodeForLView(tNode, lView);\n    const nativeNode = getNativeByTNodeOrNull(tNode, lView);\n    // For each type of TNode, specific logic is executed.\n    if (tNode.type & (3 /* TNodeType.AnyRNode */ | 8 /* TNodeType.ElementContainer */)) {\n        // Case 1: the TNode is an element\n        // The native node has to be checked.\n        _addQueryMatch(nativeNode, predicate, matches, elementsOnly, rootNativeNode);\n        if (isComponentHost(tNode)) {\n            // If the element is the host of a component, then all nodes in its view have to be processed.\n            // Note: the component's content (tNode.child) will be processed from the insertion points.\n            const componentView = getComponentLViewByIndex(tNode.index, lView);\n            if (componentView && componentView[TVIEW].firstChild) {\n                _queryNodeChildren(componentView[TVIEW].firstChild, componentView, predicate, matches, elementsOnly, rootNativeNode);\n            }\n        }\n        else {\n            if (tNode.child) {\n                // Otherwise, its children have to be processed.\n                _queryNodeChildren(tNode.child, lView, predicate, matches, elementsOnly, rootNativeNode);\n            }\n            // We also have to query the DOM directly in order to catch elements inserted through\n            // Renderer2. Note that this is __not__ optimal, because we're walking similar trees multiple\n            // times. ViewEngine could do it more efficiently, because all the insertions go through\n            // Renderer2, however that's not the case in Ivy. This approach is being used because:\n            // 1. Matching the ViewEngine behavior would mean potentially introducing a dependency\n            //    from `Renderer2` to Ivy which could bring Ivy code into ViewEngine.\n            // 2. It allows us to capture nodes that were inserted directly via the DOM.\n            nativeNode && _queryNativeNodeDescendants(nativeNode, predicate, matches, elementsOnly);\n        }\n        // In all cases, if a dynamic container exists for this node, each view inside it has to be\n        // processed.\n        const nodeOrContainer = lView[tNode.index];\n        if (isLContainer(nodeOrContainer)) {\n            _queryNodeChildrenInContainer(nodeOrContainer, predicate, matches, elementsOnly, rootNativeNode);\n        }\n    }\n    else if (tNode.type & 4 /* TNodeType.Container */) {\n        // Case 2: the TNode is a container\n        // The native node has to be checked.\n        const lContainer = lView[tNode.index];\n        _addQueryMatch(lContainer[NATIVE], predicate, matches, elementsOnly, rootNativeNode);\n        // Each view inside the container has to be processed.\n        _queryNodeChildrenInContainer(lContainer, predicate, matches, elementsOnly, rootNativeNode);\n    }\n    else if (tNode.type & 16 /* TNodeType.Projection */) {\n        // Case 3: the TNode is a projection insertion point (i.e. a <ng-content>).\n        // The nodes projected at this location all need to be processed.\n        const componentView = lView[DECLARATION_COMPONENT_VIEW];\n        const componentHost = componentView[T_HOST];\n        const head = componentHost.projection[tNode.projection];\n        if (Array.isArray(head)) {\n            for (let nativeNode of head) {\n                _addQueryMatch(nativeNode, predicate, matches, elementsOnly, rootNativeNode);\n            }\n        }\n        else if (head) {\n            const nextLView = componentView[PARENT];\n            const nextTNode = nextLView[TVIEW].data[head.index];\n            _queryNodeChildren(nextTNode, nextLView, predicate, matches, elementsOnly, rootNativeNode);\n        }\n    }\n    else if (tNode.child) {\n        // Case 4: the TNode is a view.\n        _queryNodeChildren(tNode.child, lView, predicate, matches, elementsOnly, rootNativeNode);\n    }\n    // We don't want to go to the next sibling of the root node.\n    if (rootNativeNode !== nativeNode) {\n        // To determine the next node to be processed, we need to use the next or the projectionNext\n        // link, depending on whether the current node has been projected.\n        const nextTNode = (tNode.flags & 2 /* TNodeFlags.isProjected */) ? tNode.projectionNext : tNode.next;\n        if (nextTNode) {\n            _queryNodeChildren(nextTNode, lView, predicate, matches, elementsOnly, rootNativeNode);\n        }\n    }\n}\n/**\n * Process all TNodes in a given container.\n *\n * @param lContainer the container to be processed\n * @param predicate the predicate to match\n * @param matches the list of positive matches\n * @param elementsOnly whether only elements should be searched\n * @param rootNativeNode the root native node on which predicate should not be matched\n */\nfunction _queryNodeChildrenInContainer(lContainer, predicate, matches, elementsOnly, rootNativeNode) {\n    for (let i = CONTAINER_HEADER_OFFSET; i < lContainer.length; i++) {\n        const childView = lContainer[i];\n        const firstChild = childView[TVIEW].firstChild;\n        if (firstChild) {\n            _queryNodeChildren(firstChild, childView, predicate, matches, elementsOnly, rootNativeNode);\n        }\n    }\n}\n/**\n * Match the current native node against the predicate.\n *\n * @param nativeNode the current native node\n * @param predicate the predicate to match\n * @param matches the list of positive matches\n * @param elementsOnly whether only elements should be searched\n * @param rootNativeNode the root native node on which predicate should not be matched\n */\nfunction _addQueryMatch(nativeNode, predicate, matches, elementsOnly, rootNativeNode) {\n    if (rootNativeNode !== nativeNode) {\n        const debugNode = getDebugNode(nativeNode);\n        if (!debugNode) {\n            return;\n        }\n        // Type of the \"predicate and \"matches\" array are set based on the value of\n        // the \"elementsOnly\" parameter. TypeScript is not able to properly infer these\n        // types with generics, so we manually cast the parameters accordingly.\n        if (elementsOnly && (debugNode instanceof DebugElement) && predicate(debugNode) &&\n            matches.indexOf(debugNode) === -1) {\n            matches.push(debugNode);\n        }\n        else if (!elementsOnly && predicate(debugNode) &&\n            matches.indexOf(debugNode) === -1) {\n            matches.push(debugNode);\n        }\n    }\n}\n/**\n * Match all the descendants of a DOM node against a predicate.\n *\n * @param nativeNode the current native node\n * @param predicate the predicate to match\n * @param matches the list where matches are stored\n * @param elementsOnly whether only elements should be searched\n */\nfunction _queryNativeNodeDescendants(parentNode, predicate, matches, elementsOnly) {\n    const nodes = parentNode.childNodes;\n    const length = nodes.length;\n    for (let i = 0; i < length; i++) {\n        const node = nodes[i];\n        const debugNode = getDebugNode(node);\n        if (debugNode) {\n            if (elementsOnly && (debugNode instanceof DebugElement) && predicate(debugNode) &&\n                matches.indexOf(debugNode) === -1) {\n                matches.push(debugNode);\n            }\n            else if (!elementsOnly && predicate(debugNode) &&\n                matches.indexOf(debugNode) === -1) {\n                matches.push(debugNode);\n            }\n            _queryNativeNodeDescendants(node, predicate, matches, elementsOnly);\n        }\n    }\n}\n/**\n * Iterates through the property bindings for a given node and generates\n * a map of property names to values. This map only contains property bindings\n * defined in templates, not in host bindings.\n */\nfunction collectPropertyBindings(properties, tNode, lView, tData) {\n    let bindingIndexes = tNode.propertyBindings;\n    if (bindingIndexes !== null) {\n        for (let i = 0; i < bindingIndexes.length; i++) {\n            const bindingIndex = bindingIndexes[i];\n            const propMetadata = tData[bindingIndex];\n            const metadataParts = propMetadata.split(INTERPOLATION_DELIMITER);\n            const propertyName = metadataParts[0];\n            if (metadataParts.length > 1) {\n                let value = metadataParts[1];\n                for (let j = 1; j < metadataParts.length - 1; j++) {\n                    value += renderStringify(lView[bindingIndex + j - 1]) + metadataParts[j + 1];\n                }\n                properties[propertyName] = value;\n            }\n            else {\n                properties[propertyName] = lView[bindingIndex];\n            }\n        }\n    }\n}\n// Need to keep the nodes in a global Map so that multiple angular apps are supported.\nconst _nativeNodeToDebugNode = new Map();\nconst NG_DEBUG_PROPERTY = '__ng_debug__';\n/**\n * @publicApi\n */\nfunction getDebugNode(nativeNode) {\n    if (nativeNode instanceof Node) {\n        if (!(nativeNode.hasOwnProperty(NG_DEBUG_PROPERTY))) {\n            nativeNode[NG_DEBUG_PROPERTY] = nativeNode.nodeType == Node.ELEMENT_NODE ?\n                new DebugElement(nativeNode) :\n                new DebugNode(nativeNode);\n        }\n        return nativeNode[NG_DEBUG_PROPERTY];\n    }\n    return null;\n}\n// TODO: cleanup all references to this function and remove it.\nfunction getDebugNodeR2(_nativeNode) {\n    return null;\n}\nfunction getAllDebugNodes() {\n    return Array.from(_nativeNodeToDebugNode.values());\n}\nfunction indexDebugNode(node) {\n    _nativeNodeToDebugNode.set(node.nativeNode, node);\n}\nfunction removeDebugNodeFromIndex(node) {\n    _nativeNodeToDebugNode.delete(node.nativeNode);\n}\n\nclass DefaultIterableDifferFactory {\n    constructor() { }\n    supports(obj) {\n        return isListLikeIterable(obj);\n    }\n    create(trackByFn) {\n        return new DefaultIterableDiffer(trackByFn);\n    }\n}\nconst trackByIdentity = (index, item) => item;\n/**\n * @deprecated v4.0.0 - Should not be part of public API.\n * @publicApi\n */\nclass DefaultIterableDiffer {\n    constructor(trackByFn) {\n        this.length = 0;\n        // Keeps track of the used records at any point in time (during & across `_check()` calls)\n        this._linkedRecords = null;\n        // Keeps track of the removed records at any point in time during `_check()` calls.\n        this._unlinkedRecords = null;\n        this._previousItHead = null;\n        this._itHead = null;\n        this._itTail = null;\n        this._additionsHead = null;\n        this._additionsTail = null;\n        this._movesHead = null;\n        this._movesTail = null;\n        this._removalsHead = null;\n        this._removalsTail = null;\n        // Keeps track of records where custom track by is the same, but item identity has changed\n        this._identityChangesHead = null;\n        this._identityChangesTail = null;\n        this._trackByFn = trackByFn || trackByIdentity;\n    }\n    forEachItem(fn) {\n        let record;\n        for (record = this._itHead; record !== null; record = record._next) {\n            fn(record);\n        }\n    }\n    forEachOperation(fn) {\n        let nextIt = this._itHead;\n        let nextRemove = this._removalsHead;\n        let addRemoveOffset = 0;\n        let moveOffsets = null;\n        while (nextIt || nextRemove) {\n            // Figure out which is the next record to process\n            // Order: remove, add, move\n            const record = !nextRemove ||\n                nextIt &&\n                    nextIt.currentIndex <\n                        getPreviousIndex(nextRemove, addRemoveOffset, moveOffsets) ?\n                nextIt :\n                nextRemove;\n            const adjPreviousIndex = getPreviousIndex(record, addRemoveOffset, moveOffsets);\n            const currentIndex = record.currentIndex;\n            // consume the item, and adjust the addRemoveOffset and update moveDistance if necessary\n            if (record === nextRemove) {\n                addRemoveOffset--;\n                nextRemove = nextRemove._nextRemoved;\n            }\n            else {\n                nextIt = nextIt._next;\n                if (record.previousIndex == null) {\n                    addRemoveOffset++;\n                }\n                else {\n                    // INVARIANT:  currentIndex < previousIndex\n                    if (!moveOffsets)\n                        moveOffsets = [];\n                    const localMovePreviousIndex = adjPreviousIndex - addRemoveOffset;\n                    const localCurrentIndex = currentIndex - addRemoveOffset;\n                    if (localMovePreviousIndex != localCurrentIndex) {\n                        for (let i = 0; i < localMovePreviousIndex; i++) {\n                            const offset = i < moveOffsets.length ? moveOffsets[i] : (moveOffsets[i] = 0);\n                            const index = offset + i;\n                            if (localCurrentIndex <= index && index < localMovePreviousIndex) {\n                                moveOffsets[i] = offset + 1;\n                            }\n                        }\n                        const previousIndex = record.previousIndex;\n                        moveOffsets[previousIndex] = localCurrentIndex - localMovePreviousIndex;\n                    }\n                }\n            }\n            if (adjPreviousIndex !== currentIndex) {\n                fn(record, adjPreviousIndex, currentIndex);\n            }\n        }\n    }\n    forEachPreviousItem(fn) {\n        let record;\n        for (record = this._previousItHead; record !== null; record = record._nextPrevious) {\n            fn(record);\n        }\n    }\n    forEachAddedItem(fn) {\n        let record;\n        for (record = this._additionsHead; record !== null; record = record._nextAdded) {\n            fn(record);\n        }\n    }\n    forEachMovedItem(fn) {\n        let record;\n        for (record = this._movesHead; record !== null; record = record._nextMoved) {\n            fn(record);\n        }\n    }\n    forEachRemovedItem(fn) {\n        let record;\n        for (record = this._removalsHead; record !== null; record = record._nextRemoved) {\n            fn(record);\n        }\n    }\n    forEachIdentityChange(fn) {\n        let record;\n        for (record = this._identityChangesHead; record !== null; record = record._nextIdentityChange) {\n            fn(record);\n        }\n    }\n    diff(collection) {\n        if (collection == null)\n            collection = [];\n        if (!isListLikeIterable(collection)) {\n            throw new RuntimeError(900 /* RuntimeErrorCode.INVALID_DIFFER_INPUT */, ngDevMode &&\n                `Error trying to diff '${stringify(collection)}'. Only arrays and iterables are allowed`);\n        }\n        if (this.check(collection)) {\n            return this;\n        }\n        else {\n            return null;\n        }\n    }\n    onDestroy() { }\n    check(collection) {\n        this._reset();\n        let record = this._itHead;\n        let mayBeDirty = false;\n        let index;\n        let item;\n        let itemTrackBy;\n        if (Array.isArray(collection)) {\n            this.length = collection.length;\n            for (let index = 0; index < this.length; index++) {\n                item = collection[index];\n                itemTrackBy = this._trackByFn(index, item);\n                if (record === null || !Object.is(record.trackById, itemTrackBy)) {\n                    record = this._mismatch(record, item, itemTrackBy, index);\n                    mayBeDirty = true;\n                }\n                else {\n                    if (mayBeDirty) {\n                        // TODO(misko): can we limit this to duplicates only?\n                        record = this._verifyReinsertion(record, item, itemTrackBy, index);\n                    }\n                    if (!Object.is(record.item, item))\n                        this._addIdentityChange(record, item);\n                }\n                record = record._next;\n            }\n        }\n        else {\n            index = 0;\n            iterateListLike(collection, (item) => {\n                itemTrackBy = this._trackByFn(index, item);\n                if (record === null || !Object.is(record.trackById, itemTrackBy)) {\n                    record = this._mismatch(record, item, itemTrackBy, index);\n                    mayBeDirty = true;\n                }\n                else {\n                    if (mayBeDirty) {\n                        // TODO(misko): can we limit this to duplicates only?\n                        record = this._verifyReinsertion(record, item, itemTrackBy, index);\n                    }\n                    if (!Object.is(record.item, item))\n                        this._addIdentityChange(record, item);\n                }\n                record = record._next;\n                index++;\n            });\n            this.length = index;\n        }\n        this._truncate(record);\n        this.collection = collection;\n        return this.isDirty;\n    }\n    /* CollectionChanges is considered dirty if it has any additions, moves, removals, or identity\n     * changes.\n     */\n    get isDirty() {\n        return this._additionsHead !== null || this._movesHead !== null ||\n            this._removalsHead !== null || this._identityChangesHead !== null;\n    }\n    /**\n     * Reset the state of the change objects to show no changes. This means set previousKey to\n     * currentKey, and clear all of the queues (additions, moves, removals).\n     * Set the previousIndexes of moved and added items to their currentIndexes\n     * Reset the list of additions, moves and removals\n     *\n     * @internal\n     */\n    _reset() {\n        if (this.isDirty) {\n            let record;\n            for (record = this._previousItHead = this._itHead; record !== null; record = record._next) {\n                record._nextPrevious = record._next;\n            }\n            for (record = this._additionsHead; record !== null; record = record._nextAdded) {\n                record.previousIndex = record.currentIndex;\n            }\n            this._additionsHead = this._additionsTail = null;\n            for (record = this._movesHead; record !== null; record = record._nextMoved) {\n                record.previousIndex = record.currentIndex;\n            }\n            this._movesHead = this._movesTail = null;\n            this._removalsHead = this._removalsTail = null;\n            this._identityChangesHead = this._identityChangesTail = null;\n            // TODO(vicb): when assert gets supported\n            // assert(!this.isDirty);\n        }\n    }\n    /**\n     * This is the core function which handles differences between collections.\n     *\n     * - `record` is the record which we saw at this position last time. If null then it is a new\n     *   item.\n     * - `item` is the current item in the collection\n     * - `index` is the position of the item in the collection\n     *\n     * @internal\n     */\n    _mismatch(record, item, itemTrackBy, index) {\n        // The previous record after which we will append the current one.\n        let previousRecord;\n        if (record === null) {\n            previousRecord = this._itTail;\n        }\n        else {\n            previousRecord = record._prev;\n            // Remove the record from the collection since we know it does not match the item.\n            this._remove(record);\n        }\n        // See if we have evicted the item, which used to be at some anterior position of _itHead list.\n        record = this._unlinkedRecords === null ? null : this._unlinkedRecords.get(itemTrackBy, null);\n        if (record !== null) {\n            // It is an item which we have evicted earlier: reinsert it back into the list.\n            // But first we need to check if identity changed, so we can update in view if necessary.\n            if (!Object.is(record.item, item))\n                this._addIdentityChange(record, item);\n            this._reinsertAfter(record, previousRecord, index);\n        }\n        else {\n            // Attempt to see if the item is at some posterior position of _itHead list.\n            record = this._linkedRecords === null ? null : this._linkedRecords.get(itemTrackBy, index);\n            if (record !== null) {\n                // We have the item in _itHead at/after `index` position. We need to move it forward in the\n                // collection.\n                // But first we need to check if identity changed, so we can update in view if necessary.\n                if (!Object.is(record.item, item))\n                    this._addIdentityChange(record, item);\n                this._moveAfter(record, previousRecord, index);\n            }\n            else {\n                // It is a new item: add it.\n                record =\n                    this._addAfter(new IterableChangeRecord_(item, itemTrackBy), previousRecord, index);\n            }\n        }\n        return record;\n    }\n    /**\n     * This check is only needed if an array contains duplicates. (Short circuit of nothing dirty)\n     *\n     * Use case: `[a, a]` => `[b, a, a]`\n     *\n     * If we did not have this check then the insertion of `b` would:\n     *   1) evict first `a`\n     *   2) insert `b` at `0` index.\n     *   3) leave `a` at index `1` as is. <-- this is wrong!\n     *   3) reinsert `a` at index 2. <-- this is wrong!\n     *\n     * The correct behavior is:\n     *   1) evict first `a`\n     *   2) insert `b` at `0` index.\n     *   3) reinsert `a` at index 1.\n     *   3) move `a` at from `1` to `2`.\n     *\n     *\n     * Double check that we have not evicted a duplicate item. We need to check if the item type may\n     * have already been removed:\n     * The insertion of b will evict the first 'a'. If we don't reinsert it now it will be reinserted\n     * at the end. Which will show up as the two 'a's switching position. This is incorrect, since a\n     * better way to think of it is as insert of 'b' rather then switch 'a' with 'b' and then add 'a'\n     * at the end.\n     *\n     * @internal\n     */\n    _verifyReinsertion(record, item, itemTrackBy, index) {\n        let reinsertRecord = this._unlinkedRecords === null ? null : this._unlinkedRecords.get(itemTrackBy, null);\n        if (reinsertRecord !== null) {\n            record = this._reinsertAfter(reinsertRecord, record._prev, index);\n        }\n        else if (record.currentIndex != index) {\n            record.currentIndex = index;\n            this._addToMoves(record, index);\n        }\n        return record;\n    }\n    /**\n     * Get rid of any excess {@link IterableChangeRecord_}s from the previous collection\n     *\n     * - `record` The first excess {@link IterableChangeRecord_}.\n     *\n     * @internal\n     */\n    _truncate(record) {\n        // Anything after that needs to be removed;\n        while (record !== null) {\n            const nextRecord = record._next;\n            this._addToRemovals(this._unlink(record));\n            record = nextRecord;\n        }\n        if (this._unlinkedRecords !== null) {\n            this._unlinkedRecords.clear();\n        }\n        if (this._additionsTail !== null) {\n            this._additionsTail._nextAdded = null;\n        }\n        if (this._movesTail !== null) {\n            this._movesTail._nextMoved = null;\n        }\n        if (this._itTail !== null) {\n            this._itTail._next = null;\n        }\n        if (this._removalsTail !== null) {\n            this._removalsTail._nextRemoved = null;\n        }\n        if (this._identityChangesTail !== null) {\n            this._identityChangesTail._nextIdentityChange = null;\n        }\n    }\n    /** @internal */\n    _reinsertAfter(record, prevRecord, index) {\n        if (this._unlinkedRecords !== null) {\n            this._unlinkedRecords.remove(record);\n        }\n        const prev = record._prevRemoved;\n        const next = record._nextRemoved;\n        if (prev === null) {\n            this._removalsHead = next;\n        }\n        else {\n            prev._nextRemoved = next;\n        }\n        if (next === null) {\n            this._removalsTail = prev;\n        }\n        else {\n            next._prevRemoved = prev;\n        }\n        this._insertAfter(record, prevRecord, index);\n        this._addToMoves(record, index);\n        return record;\n    }\n    /** @internal */\n    _moveAfter(record, prevRecord, index) {\n        this._unlink(record);\n        this._insertAfter(record, prevRecord, index);\n        this._addToMoves(record, index);\n        return record;\n    }\n    /** @internal */\n    _addAfter(record, prevRecord, index) {\n        this._insertAfter(record, prevRecord, index);\n        if (this._additionsTail === null) {\n            // TODO(vicb):\n            // assert(this._additionsHead === null);\n            this._additionsTail = this._additionsHead = record;\n        }\n        else {\n            // TODO(vicb):\n            // assert(_additionsTail._nextAdded === null);\n            // assert(record._nextAdded === null);\n            this._additionsTail = this._additionsTail._nextAdded = record;\n        }\n        return record;\n    }\n    /** @internal */\n    _insertAfter(record, prevRecord, index) {\n        // TODO(vicb):\n        // assert(record != prevRecord);\n        // assert(record._next === null);\n        // assert(record._prev === null);\n        const next = prevRecord === null ? this._itHead : prevRecord._next;\n        // TODO(vicb):\n        // assert(next != record);\n        // assert(prevRecord != record);\n        record._next = next;\n        record._prev = prevRecord;\n        if (next === null) {\n            this._itTail = record;\n        }\n        else {\n            next._prev = record;\n        }\n        if (prevRecord === null) {\n            this._itHead = record;\n        }\n        else {\n            prevRecord._next = record;\n        }\n        if (this._linkedRecords === null) {\n            this._linkedRecords = new _DuplicateMap();\n        }\n        this._linkedRecords.put(record);\n        record.currentIndex = index;\n        return record;\n    }\n    /** @internal */\n    _remove(record) {\n        return this._addToRemovals(this._unlink(record));\n    }\n    /** @internal */\n    _unlink(record) {\n        if (this._linkedRecords !== null) {\n            this._linkedRecords.remove(record);\n        }\n        const prev = record._prev;\n        const next = record._next;\n        // TODO(vicb):\n        // assert((record._prev = null) === null);\n        // assert((record._next = null) === null);\n        if (prev === null) {\n            this._itHead = next;\n        }\n        else {\n            prev._next = next;\n        }\n        if (next === null) {\n            this._itTail = prev;\n        }\n        else {\n            next._prev = prev;\n        }\n        return record;\n    }\n    /** @internal */\n    _addToMoves(record, toIndex) {\n        // TODO(vicb):\n        // assert(record._nextMoved === null);\n        if (record.previousIndex === toIndex) {\n            return record;\n        }\n        if (this._movesTail === null) {\n            // TODO(vicb):\n            // assert(_movesHead === null);\n            this._movesTail = this._movesHead = record;\n        }\n        else {\n            // TODO(vicb):\n            // assert(_movesTail._nextMoved === null);\n            this._movesTail = this._movesTail._nextMoved = record;\n        }\n        return record;\n    }\n    _addToRemovals(record) {\n        if (this._unlinkedRecords === null) {\n            this._unlinkedRecords = new _DuplicateMap();\n        }\n        this._unlinkedRecords.put(record);\n        record.currentIndex = null;\n        record._nextRemoved = null;\n        if (this._removalsTail === null) {\n            // TODO(vicb):\n            // assert(_removalsHead === null);\n            this._removalsTail = this._removalsHead = record;\n            record._prevRemoved = null;\n        }\n        else {\n            // TODO(vicb):\n            // assert(_removalsTail._nextRemoved === null);\n            // assert(record._nextRemoved === null);\n            record._prevRemoved = this._removalsTail;\n            this._removalsTail = this._removalsTail._nextRemoved = record;\n        }\n        return record;\n    }\n    /** @internal */\n    _addIdentityChange(record, item) {\n        record.item = item;\n        if (this._identityChangesTail === null) {\n            this._identityChangesTail = this._identityChangesHead = record;\n        }\n        else {\n            this._identityChangesTail = this._identityChangesTail._nextIdentityChange = record;\n        }\n        return record;\n    }\n}\nclass IterableChangeRecord_ {\n    constructor(item, trackById) {\n        this.item = item;\n        this.trackById = trackById;\n        this.currentIndex = null;\n        this.previousIndex = null;\n        /** @internal */\n        this._nextPrevious = null;\n        /** @internal */\n        this._prev = null;\n        /** @internal */\n        this._next = null;\n        /** @internal */\n        this._prevDup = null;\n        /** @internal */\n        this._nextDup = null;\n        /** @internal */\n        this._prevRemoved = null;\n        /** @internal */\n        this._nextRemoved = null;\n        /** @internal */\n        this._nextAdded = null;\n        /** @internal */\n        this._nextMoved = null;\n        /** @internal */\n        this._nextIdentityChange = null;\n    }\n}\n// A linked list of IterableChangeRecords with the same IterableChangeRecord_.item\nclass _DuplicateItemRecordList {\n    constructor() {\n        /** @internal */\n        this._head = null;\n        /** @internal */\n        this._tail = null;\n    }\n    /**\n     * Append the record to the list of duplicates.\n     *\n     * Note: by design all records in the list of duplicates hold the same value in record.item.\n     */\n    add(record) {\n        if (this._head === null) {\n            this._head = this._tail = record;\n            record._nextDup = null;\n            record._prevDup = null;\n        }\n        else {\n            // TODO(vicb):\n            // assert(record.item ==  _head.item ||\n            //       record.item is num && record.item.isNaN && _head.item is num && _head.item.isNaN);\n            this._tail._nextDup = record;\n            record._prevDup = this._tail;\n            record._nextDup = null;\n            this._tail = record;\n        }\n    }\n    // Returns a IterableChangeRecord_ having IterableChangeRecord_.trackById == trackById and\n    // IterableChangeRecord_.currentIndex >= atOrAfterIndex\n    get(trackById, atOrAfterIndex) {\n        let record;\n        for (record = this._head; record !== null; record = record._nextDup) {\n            if ((atOrAfterIndex === null || atOrAfterIndex <= record.currentIndex) &&\n                Object.is(record.trackById, trackById)) {\n                return record;\n            }\n        }\n        return null;\n    }\n    /**\n     * Remove one {@link IterableChangeRecord_} from the list of duplicates.\n     *\n     * Returns whether the list of duplicates is empty.\n     */\n    remove(record) {\n        // TODO(vicb):\n        // assert(() {\n        //  // verify that the record being removed is in the list.\n        //  for (IterableChangeRecord_ cursor = _head; cursor != null; cursor = cursor._nextDup) {\n        //    if (identical(cursor, record)) return true;\n        //  }\n        //  return false;\n        //});\n        const prev = record._prevDup;\n        const next = record._nextDup;\n        if (prev === null) {\n            this._head = next;\n        }\n        else {\n            prev._nextDup = next;\n        }\n        if (next === null) {\n            this._tail = prev;\n        }\n        else {\n            next._prevDup = prev;\n        }\n        return this._head === null;\n    }\n}\nclass _DuplicateMap {\n    constructor() {\n        this.map = new Map();\n    }\n    put(record) {\n        const key = record.trackById;\n        let duplicates = this.map.get(key);\n        if (!duplicates) {\n            duplicates = new _DuplicateItemRecordList();\n            this.map.set(key, duplicates);\n        }\n        duplicates.add(record);\n    }\n    /**\n     * Retrieve the `value` using key. Because the IterableChangeRecord_ value may be one which we\n     * have already iterated over, we use the `atOrAfterIndex` to pretend it is not there.\n     *\n     * Use case: `[a, b, c, a, a]` if we are at index `3` which is the second `a` then asking if we\n     * have any more `a`s needs to return the second `a`.\n     */\n    get(trackById, atOrAfterIndex) {\n        const key = trackById;\n        const recordList = this.map.get(key);\n        return recordList ? recordList.get(trackById, atOrAfterIndex) : null;\n    }\n    /**\n     * Removes a {@link IterableChangeRecord_} from the list of duplicates.\n     *\n     * The list of duplicates also is removed from the map if it gets empty.\n     */\n    remove(record) {\n        const key = record.trackById;\n        const recordList = this.map.get(key);\n        // Remove the list of duplicates when it gets empty\n        if (recordList.remove(record)) {\n            this.map.delete(key);\n        }\n        return record;\n    }\n    get isEmpty() {\n        return this.map.size === 0;\n    }\n    clear() {\n        this.map.clear();\n    }\n}\nfunction getPreviousIndex(item, addRemoveOffset, moveOffsets) {\n    const previousIndex = item.previousIndex;\n    if (previousIndex === null)\n        return previousIndex;\n    let moveOffset = 0;\n    if (moveOffsets && previousIndex < moveOffsets.length) {\n        moveOffset = moveOffsets[previousIndex];\n    }\n    return previousIndex + addRemoveOffset + moveOffset;\n}\n\nclass DefaultKeyValueDifferFactory {\n    constructor() { }\n    supports(obj) {\n        return obj instanceof Map || isJsObject(obj);\n    }\n    create() {\n        return new DefaultKeyValueDiffer();\n    }\n}\nclass DefaultKeyValueDiffer {\n    constructor() {\n        this._records = new Map();\n        this._mapHead = null;\n        // _appendAfter is used in the check loop\n        this._appendAfter = null;\n        this._previousMapHead = null;\n        this._changesHead = null;\n        this._changesTail = null;\n        this._additionsHead = null;\n        this._additionsTail = null;\n        this._removalsHead = null;\n        this._removalsTail = null;\n    }\n    get isDirty() {\n        return this._additionsHead !== null || this._changesHead !== null ||\n            this._removalsHead !== null;\n    }\n    forEachItem(fn) {\n        let record;\n        for (record = this._mapHead; record !== null; record = record._next) {\n            fn(record);\n        }\n    }\n    forEachPreviousItem(fn) {\n        let record;\n        for (record = this._previousMapHead; record !== null; record = record._nextPrevious) {\n            fn(record);\n        }\n    }\n    forEachChangedItem(fn) {\n        let record;\n        for (record = this._changesHead; record !== null; record = record._nextChanged) {\n            fn(record);\n        }\n    }\n    forEachAddedItem(fn) {\n        let record;\n        for (record = this._additionsHead; record !== null; record = record._nextAdded) {\n            fn(record);\n        }\n    }\n    forEachRemovedItem(fn) {\n        let record;\n        for (record = this._removalsHead; record !== null; record = record._nextRemoved) {\n            fn(record);\n        }\n    }\n    diff(map) {\n        if (!map) {\n            map = new Map();\n        }\n        else if (!(map instanceof Map || isJsObject(map))) {\n            throw new RuntimeError(900 /* RuntimeErrorCode.INVALID_DIFFER_INPUT */, ngDevMode &&\n                `Error trying to diff '${stringify(map)}'. Only maps and objects are allowed`);\n        }\n        return this.check(map) ? this : null;\n    }\n    onDestroy() { }\n    /**\n     * Check the current state of the map vs the previous.\n     * The algorithm is optimised for when the keys do no change.\n     */\n    check(map) {\n        this._reset();\n        let insertBefore = this._mapHead;\n        this._appendAfter = null;\n        this._forEach(map, (value, key) => {\n            if (insertBefore && insertBefore.key === key) {\n                this._maybeAddToChanges(insertBefore, value);\n                this._appendAfter = insertBefore;\n                insertBefore = insertBefore._next;\n            }\n            else {\n                const record = this._getOrCreateRecordForKey(key, value);\n                insertBefore = this._insertBeforeOrAppend(insertBefore, record);\n            }\n        });\n        // Items remaining at the end of the list have been deleted\n        if (insertBefore) {\n            if (insertBefore._prev) {\n                insertBefore._prev._next = null;\n            }\n            this._removalsHead = insertBefore;\n            for (let record = insertBefore; record !== null; record = record._nextRemoved) {\n                if (record === this._mapHead) {\n                    this._mapHead = null;\n                }\n                this._records.delete(record.key);\n                record._nextRemoved = record._next;\n                record.previousValue = record.currentValue;\n                record.currentValue = null;\n                record._prev = null;\n                record._next = null;\n            }\n        }\n        // Make sure tails have no next records from previous runs\n        if (this._changesTail)\n            this._changesTail._nextChanged = null;\n        if (this._additionsTail)\n            this._additionsTail._nextAdded = null;\n        return this.isDirty;\n    }\n    /**\n     * Inserts a record before `before` or append at the end of the list when `before` is null.\n     *\n     * Notes:\n     * - This method appends at `this._appendAfter`,\n     * - This method updates `this._appendAfter`,\n     * - The return value is the new value for the insertion pointer.\n     */\n    _insertBeforeOrAppend(before, record) {\n        if (before) {\n            const prev = before._prev;\n            record._next = before;\n            record._prev = prev;\n            before._prev = record;\n            if (prev) {\n                prev._next = record;\n            }\n            if (before === this._mapHead) {\n                this._mapHead = record;\n            }\n            this._appendAfter = before;\n            return before;\n        }\n        if (this._appendAfter) {\n            this._appendAfter._next = record;\n            record._prev = this._appendAfter;\n        }\n        else {\n            this._mapHead = record;\n        }\n        this._appendAfter = record;\n        return null;\n    }\n    _getOrCreateRecordForKey(key, value) {\n        if (this._records.has(key)) {\n            const record = this._records.get(key);\n            this._maybeAddToChanges(record, value);\n            const prev = record._prev;\n            const next = record._next;\n            if (prev) {\n                prev._next = next;\n            }\n            if (next) {\n                next._prev = prev;\n            }\n            record._next = null;\n            record._prev = null;\n            return record;\n        }\n        const record = new KeyValueChangeRecord_(key);\n        this._records.set(key, record);\n        record.currentValue = value;\n        this._addToAdditions(record);\n        return record;\n    }\n    /** @internal */\n    _reset() {\n        if (this.isDirty) {\n            let record;\n            // let `_previousMapHead` contain the state of the map before the changes\n            this._previousMapHead = this._mapHead;\n            for (record = this._previousMapHead; record !== null; record = record._next) {\n                record._nextPrevious = record._next;\n            }\n            // Update `record.previousValue` with the value of the item before the changes\n            // We need to update all changed items (that's those which have been added and changed)\n            for (record = this._changesHead; record !== null; record = record._nextChanged) {\n                record.previousValue = record.currentValue;\n            }\n            for (record = this._additionsHead; record != null; record = record._nextAdded) {\n                record.previousValue = record.currentValue;\n            }\n            this._changesHead = this._changesTail = null;\n            this._additionsHead = this._additionsTail = null;\n            this._removalsHead = null;\n        }\n    }\n    // Add the record or a given key to the list of changes only when the value has actually changed\n    _maybeAddToChanges(record, newValue) {\n        if (!Object.is(newValue, record.currentValue)) {\n            record.previousValue = record.currentValue;\n            record.currentValue = newValue;\n            this._addToChanges(record);\n        }\n    }\n    _addToAdditions(record) {\n        if (this._additionsHead === null) {\n            this._additionsHead = this._additionsTail = record;\n        }\n        else {\n            this._additionsTail._nextAdded = record;\n            this._additionsTail = record;\n        }\n    }\n    _addToChanges(record) {\n        if (this._changesHead === null) {\n            this._changesHead = this._changesTail = record;\n        }\n        else {\n            this._changesTail._nextChanged = record;\n            this._changesTail = record;\n        }\n    }\n    /** @internal */\n    _forEach(obj, fn) {\n        if (obj instanceof Map) {\n            obj.forEach(fn);\n        }\n        else {\n            Object.keys(obj).forEach(k => fn(obj[k], k));\n        }\n    }\n}\nclass KeyValueChangeRecord_ {\n    constructor(key) {\n        this.key = key;\n        this.previousValue = null;\n        this.currentValue = null;\n        /** @internal */\n        this._nextPrevious = null;\n        /** @internal */\n        this._next = null;\n        /** @internal */\n        this._prev = null;\n        /** @internal */\n        this._nextAdded = null;\n        /** @internal */\n        this._nextRemoved = null;\n        /** @internal */\n        this._nextChanged = null;\n    }\n}\n\nfunction defaultIterableDiffersFactory() {\n    return new IterableDiffers([new DefaultIterableDifferFactory()]);\n}\n/**\n * A repository of different iterable diffing strategies used by NgFor, NgClass, and others.\n *\n * @publicApi\n */\nclass IterableDiffers {\n    constructor(factories) {\n        this.factories = factories;\n    }\n    static create(factories, parent) {\n        if (parent != null) {\n            const copied = parent.factories.slice();\n            factories = factories.concat(copied);\n        }\n        return new IterableDiffers(factories);\n    }\n    /**\n     * Takes an array of {@link IterableDifferFactory} and returns a provider used to extend the\n     * inherited {@link IterableDiffers} instance with the provided factories and return a new\n     * {@link IterableDiffers} instance.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * The following example shows how to extend an existing list of factories,\n     * which will only be applied to the injector for this component and its children.\n     * This step is all that's required to make a new {@link IterableDiffer} available.\n     *\n     * ```\n     * @Component({\n     *   viewProviders: [\n     *     IterableDiffers.extend([new ImmutableListDiffer()])\n     *   ]\n     * })\n     * ```\n     */\n    static extend(factories) {\n        return {\n            provide: IterableDiffers,\n            useFactory: (parent) => {\n                // if parent is null, it means that we are in the root injector and we have just overridden\n                // the default injection mechanism for IterableDiffers, in such a case just assume\n                // `defaultIterableDiffersFactory`.\n                return IterableDiffers.create(factories, parent || defaultIterableDiffersFactory());\n            },\n            // Dependency technically isn't optional, but we can provide a better error message this way.\n            deps: [[IterableDiffers, new SkipSelf(), new Optional()]]\n        };\n    }\n    find(iterable) {\n        const factory = this.factories.find(f => f.supports(iterable));\n        if (factory != null) {\n            return factory;\n        }\n        else {\n            throw new RuntimeError(901 /* RuntimeErrorCode.NO_SUPPORTING_DIFFER_FACTORY */, ngDevMode &&\n                `Cannot find a differ supporting object '${iterable}' of type '${getTypeNameForDebugging(iterable)}'`);\n        }\n    }\n}\n/** @nocollapse */\nIterableDiffers.ɵprov = ɵɵdefineInjectable({ token: IterableDiffers, providedIn: 'root', factory: defaultIterableDiffersFactory });\nfunction getTypeNameForDebugging(type) {\n    return type['name'] || typeof type;\n}\n\nfunction defaultKeyValueDiffersFactory() {\n    return new KeyValueDiffers([new DefaultKeyValueDifferFactory()]);\n}\n/**\n * A repository of different Map diffing strategies used by NgClass, NgStyle, and others.\n *\n * @publicApi\n */\nclass KeyValueDiffers {\n    constructor(factories) {\n        this.factories = factories;\n    }\n    static create(factories, parent) {\n        if (parent) {\n            const copied = parent.factories.slice();\n            factories = factories.concat(copied);\n        }\n        return new KeyValueDiffers(factories);\n    }\n    /**\n     * Takes an array of {@link KeyValueDifferFactory} and returns a provider used to extend the\n     * inherited {@link KeyValueDiffers} instance with the provided factories and return a new\n     * {@link KeyValueDiffers} instance.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * The following example shows how to extend an existing list of factories,\n     * which will only be applied to the injector for this component and its children.\n     * This step is all that's required to make a new {@link KeyValueDiffer} available.\n     *\n     * ```\n     * @Component({\n     *   viewProviders: [\n     *     KeyValueDiffers.extend([new ImmutableMapDiffer()])\n     *   ]\n     * })\n     * ```\n     */\n    static extend(factories) {\n        return {\n            provide: KeyValueDiffers,\n            useFactory: (parent) => {\n                // if parent is null, it means that we are in the root injector and we have just overridden\n                // the default injection mechanism for KeyValueDiffers, in such a case just assume\n                // `defaultKeyValueDiffersFactory`.\n                return KeyValueDiffers.create(factories, parent || defaultKeyValueDiffersFactory());\n            },\n            // Dependency technically isn't optional, but we can provide a better error message this way.\n            deps: [[KeyValueDiffers, new SkipSelf(), new Optional()]]\n        };\n    }\n    find(kv) {\n        const factory = this.factories.find(f => f.supports(kv));\n        if (factory) {\n            return factory;\n        }\n        throw new RuntimeError(901 /* RuntimeErrorCode.NO_SUPPORTING_DIFFER_FACTORY */, ngDevMode && `Cannot find a differ supporting object '${kv}'`);\n    }\n}\n/** @nocollapse */\nKeyValueDiffers.ɵprov = ɵɵdefineInjectable({ token: KeyValueDiffers, providedIn: 'root', factory: defaultKeyValueDiffersFactory });\n\n/**\n * Structural diffing for `Object`s and `Map`s.\n */\nconst keyValDiff = [new DefaultKeyValueDifferFactory()];\n/**\n * Structural diffing for `Iterable` types such as `Array`s.\n */\nconst iterableDiff = [new DefaultIterableDifferFactory()];\nconst defaultIterableDiffers = new IterableDiffers(iterableDiff);\nconst defaultKeyValueDiffers = new KeyValueDiffers(keyValDiff);\n\n/**\n * @module\n * @description\n * Change detection enables data binding in Angular.\n */\n\n/**\n * This platform has to be included in any other platform\n *\n * @publicApi\n */\nconst platformCore = createPlatformFactory(null, 'core', []);\n\n/**\n * Re-exported by `BrowserModule`, which is included automatically in the root\n * `AppModule` when you create a new app with the CLI `new` command. Eagerly injects\n * `ApplicationRef` to instantiate it.\n *\n * @publicApi\n */\nclass ApplicationModule {\n    // Inject ApplicationRef to make it eager...\n    constructor(appRef) { }\n}\nApplicationModule.ɵfac = function ApplicationModule_Factory(t) { return new (t || ApplicationModule)(ɵɵinject(ApplicationRef)); };\nApplicationModule.ɵmod = /*@__PURE__*/ ɵɵdefineNgModule({ type: ApplicationModule });\nApplicationModule.ɵinj = /*@__PURE__*/ ɵɵdefineInjector({});\n(function () { (typeof ngDevMode === \"undefined\" || ngDevMode) && setClassMetadata(ApplicationModule, [{\n        type: NgModule\n    }], function () { return [{ type: ApplicationRef }]; }, null); })();\n\n/** Coerces a value (typically a string) to a boolean. */\nfunction coerceToBoolean(value) {\n    return typeof value === 'boolean' ? value : (value != null && value !== 'false');\n}\n\n/**\n * Compiles a partial directive declaration object into a full directive definition object.\n *\n * @codeGenApi\n */\nfunction ɵɵngDeclareDirective(decl) {\n    const compiler = getCompilerFacade({ usage: 1 /* JitCompilerUsage.PartialDeclaration */, kind: 'directive', type: decl.type });\n    return compiler.compileDirectiveDeclaration(angularCoreEnv, `ng:///${decl.type.name}/ɵfac.js`, decl);\n}\n/**\n * Evaluates the class metadata declaration.\n *\n * @codeGenApi\n */\nfunction ɵɵngDeclareClassMetadata(decl) {\n    setClassMetadata(decl.type, decl.decorators, decl.ctorParameters ?? null, decl.propDecorators ?? null);\n}\n/**\n * Compiles a partial component declaration object into a full component definition object.\n *\n * @codeGenApi\n */\nfunction ɵɵngDeclareComponent(decl) {\n    const compiler = getCompilerFacade({ usage: 1 /* JitCompilerUsage.PartialDeclaration */, kind: 'component', type: decl.type });\n    return compiler.compileComponentDeclaration(angularCoreEnv, `ng:///${decl.type.name}/ɵcmp.js`, decl);\n}\n/**\n * Compiles a partial pipe declaration object into a full pipe definition object.\n *\n * @codeGenApi\n */\nfunction ɵɵngDeclareFactory(decl) {\n    const compiler = getCompilerFacade({\n        usage: 1 /* JitCompilerUsage.PartialDeclaration */,\n        kind: getFactoryKind(decl.target),\n        type: decl.type\n    });\n    return compiler.compileFactoryDeclaration(angularCoreEnv, `ng:///${decl.type.name}/ɵfac.js`, decl);\n}\nfunction getFactoryKind(target) {\n    switch (target) {\n        case FactoryTarget.Directive:\n            return 'directive';\n        case FactoryTarget.Component:\n            return 'component';\n        case FactoryTarget.Injectable:\n            return 'injectable';\n        case FactoryTarget.Pipe:\n            return 'pipe';\n        case FactoryTarget.NgModule:\n            return 'NgModule';\n    }\n}\n/**\n * Compiles a partial injectable declaration object into a full injectable definition object.\n *\n * @codeGenApi\n */\nfunction ɵɵngDeclareInjectable(decl) {\n    const compiler = getCompilerFacade({ usage: 1 /* JitCompilerUsage.PartialDeclaration */, kind: 'injectable', type: decl.type });\n    return compiler.compileInjectableDeclaration(angularCoreEnv, `ng:///${decl.type.name}/ɵprov.js`, decl);\n}\n/**\n * Compiles a partial injector declaration object into a full injector definition object.\n *\n * @codeGenApi\n */\nfunction ɵɵngDeclareInjector(decl) {\n    const compiler = getCompilerFacade({ usage: 1 /* JitCompilerUsage.PartialDeclaration */, kind: 'NgModule', type: decl.type });\n    return compiler.compileInjectorDeclaration(angularCoreEnv, `ng:///${decl.type.name}/ɵinj.js`, decl);\n}\n/**\n * Compiles a partial NgModule declaration object into a full NgModule definition object.\n *\n * @codeGenApi\n */\nfunction ɵɵngDeclareNgModule(decl) {\n    const compiler = getCompilerFacade({ usage: 1 /* JitCompilerUsage.PartialDeclaration */, kind: 'NgModule', type: decl.type });\n    return compiler.compileNgModuleDeclaration(angularCoreEnv, `ng:///${decl.type.name}/ɵmod.js`, decl);\n}\n/**\n * Compiles a partial pipe declaration object into a full pipe definition object.\n *\n * @codeGenApi\n */\nfunction ɵɵngDeclarePipe(decl) {\n    const compiler = getCompilerFacade({ usage: 1 /* JitCompilerUsage.PartialDeclaration */, kind: 'pipe', type: decl.type });\n    return compiler.compilePipeDeclaration(angularCoreEnv, `ng:///${decl.type.name}/ɵpipe.js`, decl);\n}\n\n// clang-format off\n// clang-format on\n\n/**\n * Creates a `ComponentRef` instance based on provided component type and a set of options.\n *\n * @usageNotes\n *\n * The example below demonstrates how the `createComponent` function can be used\n * to create an instance of a ComponentRef dynamically and attach it to an ApplicationRef,\n * so that it gets included into change detection cycles.\n *\n * Note: the example uses standalone components, but the function can also be used for\n * non-standalone components (declared in an NgModule) as well.\n *\n * ```typescript\n * @Component({\n *   standalone: true,\n *   template: `Hello {{ name }}!`\n * })\n * class HelloComponent {\n *   name = 'Angular';\n * }\n *\n * @Component({\n *   standalone: true,\n *   template: `<div id=\"hello-component-host\"></div>`\n * })\n * class RootComponent {}\n *\n * // Bootstrap an application.\n * const applicationRef = await bootstrapApplication(RootComponent);\n *\n * // Locate a DOM node that would be used as a host.\n * const host = document.getElementById('hello-component-host');\n *\n * // Get an `EnvironmentInjector` instance from the `ApplicationRef`.\n * const environmentInjector = applicationRef.injector;\n *\n * // We can now create a `ComponentRef` instance.\n * const componentRef = createComponent(HelloComponent, {host, environmentInjector});\n *\n * // Last step is to register the newly created ref using the `ApplicationRef` instance\n * // to include the component view into change detection cycles.\n * applicationRef.attachView(componentRef.hostView);\n * ```\n *\n * @param component Component class reference.\n * @param options Set of options to use:\n *  * `environmentInjector`: An `EnvironmentInjector` instance to be used for the component, see\n * additional info about it at https://angular.io/guide/standalone-components#environment-injectors.\n *  * `hostElement` (optional): A DOM node that should act as a host node for the component. If not\n * provided, Angular creates one based on the tag name used in the component selector (and falls\n * back to using `div` if selector doesn't have tag name info).\n *  * `elementInjector` (optional): An `ElementInjector` instance, see additional info about it at\n * https://angular.io/guide/hierarchical-dependency-injection#elementinjector.\n *  * `projectableNodes` (optional): A list of DOM nodes that should be projected through\n *                      [`<ng-content>`](api/core/ng-content) of the new component instance.\n * @returns ComponentRef instance that represents a given Component.\n *\n * @publicApi\n */\nfunction createComponent(component, options) {\n    ngDevMode && assertComponentDef(component);\n    const componentDef = getComponentDef(component);\n    const elementInjector = options.elementInjector || getNullInjector();\n    const factory = new ComponentFactory(componentDef);\n    return factory.create(elementInjector, options.projectableNodes, options.hostElement, options.environmentInjector);\n}\n/**\n * Creates an object that allows to retrieve component metadata.\n *\n * @usageNotes\n *\n * The example below demonstrates how to use the function and how the fields\n * of the returned object map to the component metadata.\n *\n * ```typescript\n * @Component({\n *   standalone: true,\n *   selector: 'foo-component',\n *   template: `\n *     <ng-content></ng-content>\n *     <ng-content select=\"content-selector-a\"></ng-content>\n *   `,\n * })\n * class FooComponent {\n *   @Input('inputName') inputPropName: string;\n *   @Output('outputName') outputPropName = new EventEmitter<void>();\n * }\n *\n * const mirror = reflectComponentType(FooComponent);\n * expect(mirror.type).toBe(FooComponent);\n * expect(mirror.selector).toBe('foo-component');\n * expect(mirror.isStandalone).toBe(true);\n * expect(mirror.inputs).toEqual([{propName: 'inputName', templateName: 'inputPropName'}]);\n * expect(mirror.outputs).toEqual([{propName: 'outputName', templateName: 'outputPropName'}]);\n * expect(mirror.ngContentSelectors).toEqual([\n *   '*',                 // first `<ng-content>` in a template, the selector defaults to `*`\n *   'content-selector-a' // second `<ng-content>` in a template\n * ]);\n * ```\n *\n * @param component Component class reference.\n * @returns An object that allows to retrieve component metadata.\n *\n * @publicApi\n */\nfunction reflectComponentType(component) {\n    const componentDef = getComponentDef(component);\n    if (!componentDef)\n        return null;\n    const factory = new ComponentFactory(componentDef);\n    return {\n        get selector() {\n            return factory.selector;\n        },\n        get type() {\n            return factory.componentType;\n        },\n        get inputs() {\n            return factory.inputs;\n        },\n        get outputs() {\n            return factory.outputs;\n        },\n        get ngContentSelectors() {\n            return factory.ngContentSelectors;\n        },\n        get isStandalone() {\n            return componentDef.standalone;\n        },\n    };\n}\n\n/**\n * @module\n * @description\n * Entry point from which you should import all public core APIs.\n */\nif (typeof ngDevMode !== 'undefined' && ngDevMode) {\n    // This helper is to give a reasonable error message to people upgrading to v9 that have not yet\n    // installed `@angular/localize` in their app.\n    // tslint:disable-next-line: no-toplevel-property-access\n    _global.$localize = _global.$localize || function () {\n        throw new Error('It looks like your application or one of its dependencies is using i18n.\\n' +\n            'Angular 9 introduced a global `$localize()` function that needs to be loaded.\\n' +\n            'Please run `ng add @angular/localize` from the Angular CLI.\\n' +\n            '(For non-CLI projects, add `import \\'@angular/localize/init\\';` to your `polyfills.ts` file.\\n' +\n            'For server-side rendering applications add the import to your `main.server.ts` file.)');\n    };\n}\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of this package.\n */\n// This file only reexports content of the `src` folder. Keep it that way.\n\n/* This file is not used to build this module. It is only used during editing\n * by the TypeScript language service and during build for verification. `ngc`\n * replaces this file with production index.ts when it rewrites private symbol\n * names.\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { ANALYZE_FOR_ENTRY_COMPONENTS, ANIMATION_MODULE_TYPE, APP_BOOTSTRAP_LISTENER, APP_ID, APP_INITIALIZER, ApplicationInitStatus, ApplicationModule, ApplicationRef, Attribute, COMPILER_OPTIONS, CUSTOM_ELEMENTS_SCHEMA, ChangeDetectionStrategy, ChangeDetectorRef, Compiler, CompilerFactory, Component, ComponentFactory$1 as ComponentFactory, ComponentFactoryResolver$1 as ComponentFactoryResolver, ComponentRef$1 as ComponentRef, ContentChild, ContentChildren, DEFAULT_CURRENCY_CODE, DebugElement, DebugEventListener, DebugNode, DefaultIterableDiffer, Directive, ENVIRONMENT_INITIALIZER, ElementRef, EmbeddedViewRef, EnvironmentInjector, ErrorHandler, EventEmitter, Host, HostBinding, HostListener, INJECTOR, Inject, InjectFlags, Injectable, InjectionToken, Injector, Input, IterableDiffers, KeyValueDiffers, LOCALE_ID, MissingTranslationStrategy, ModuleWithComponentFactories, NO_ERRORS_SCHEMA, NgModule, NgModuleFactory$1 as NgModuleFactory, NgModuleRef$1 as NgModuleRef, NgProbeToken, NgZone, Optional, Output, PACKAGE_ROOT_URL, PLATFORM_ID, PLATFORM_INITIALIZER, Pipe, PlatformRef, Query, QueryList, ReflectiveInjector, ReflectiveKey, Renderer2, RendererFactory2, RendererStyleFlags2, ResolvedReflectiveFactory, Sanitizer, SecurityContext, Self, SimpleChange, SkipSelf, TRANSLATIONS, TRANSLATIONS_FORMAT, TemplateRef, Testability, TestabilityRegistry, Type, VERSION, Version, ViewChild, ViewChildren, ViewContainerRef, ViewEncapsulation$1 as ViewEncapsulation, ViewRef, asNativeElements, assertPlatform, createComponent, createEnvironmentInjector, createNgModule, createNgModuleRef, createPlatform, createPlatformFactory, defineInjectable, destroyPlatform, enableProdMode, forwardRef, getDebugNode, getModuleFactory, getNgModuleById, getPlatform, importProvidersFrom, inject, isDevMode, isStandalone, makeEnvironmentProviders, platformCore, reflectComponentType, resolveForwardRef, setTestabilityGetter, ALLOW_MULTIPLE_PLATFORMS as ɵALLOW_MULTIPLE_PLATFORMS, APP_ID_RANDOM_PROVIDER as ɵAPP_ID_RANDOM_PROVIDER, ComponentFactory$1 as ɵComponentFactory, Console as ɵConsole, DEFAULT_LOCALE_ID as ɵDEFAULT_LOCALE_ID, INJECTOR_SCOPE as ɵINJECTOR_SCOPE, LContext as ɵLContext, LifecycleHooksFeature as ɵLifecycleHooksFeature, LocaleDataIndex as ɵLocaleDataIndex, NG_COMP_DEF as ɵNG_COMP_DEF, NG_DIR_DEF as ɵNG_DIR_DEF, NG_ELEMENT_ID as ɵNG_ELEMENT_ID, NG_INJ_DEF as ɵNG_INJ_DEF, NG_MOD_DEF as ɵNG_MOD_DEF, NG_PIPE_DEF as ɵNG_PIPE_DEF, NG_PROV_DEF as ɵNG_PROV_DEF, NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR as ɵNOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR, NO_CHANGE as ɵNO_CHANGE, NgModuleFactory as ɵNgModuleFactory, NoopNgZone as ɵNoopNgZone, ReflectionCapabilities as ɵReflectionCapabilities, ComponentFactory as ɵRender3ComponentFactory, ComponentRef as ɵRender3ComponentRef, NgModuleRef as ɵRender3NgModuleRef, RuntimeError as ɵRuntimeError, TESTABILITY as ɵTESTABILITY, TESTABILITY_GETTER as ɵTESTABILITY_GETTER, ViewRef$1 as ɵViewRef, XSS_SECURITY_URL as ɵXSS_SECURITY_URL, _sanitizeHtml as ɵ_sanitizeHtml, _sanitizeUrl as ɵ_sanitizeUrl, allowSanitizationBypassAndThrow as ɵallowSanitizationBypassAndThrow, bypassSanitizationTrustHtml as ɵbypassSanitizationTrustHtml, bypassSanitizationTrustResourceUrl as ɵbypassSanitizationTrustResourceUrl, bypassSanitizationTrustScript as ɵbypassSanitizationTrustScript, bypassSanitizationTrustStyle as ɵbypassSanitizationTrustStyle, bypassSanitizationTrustUrl as ɵbypassSanitizationTrustUrl, clearResolutionOfComponentResourcesQueue as ɵclearResolutionOfComponentResourcesQueue, coerceToBoolean as ɵcoerceToBoolean, compileComponent as ɵcompileComponent, compileDirective as ɵcompileDirective, compileNgModule as ɵcompileNgModule, compileNgModuleDefs as ɵcompileNgModuleDefs, compileNgModuleFactory as ɵcompileNgModuleFactory, compilePipe as ɵcompilePipe, convertToBitFlags as ɵconvertToBitFlags, createInjector as ɵcreateInjector, defaultIterableDiffers as ɵdefaultIterableDiffers, defaultKeyValueDiffers as ɵdefaultKeyValueDiffers, detectChanges as ɵdetectChanges, devModeEqual as ɵdevModeEqual, findLocaleData as ɵfindLocaleData, flushModuleScopingQueueAsMuchAsPossible as ɵflushModuleScopingQueueAsMuchAsPossible, formatRuntimeError as ɵformatRuntimeError, getDebugNode as ɵgetDebugNode, getDebugNodeR2 as ɵgetDebugNodeR2, getDirectives as ɵgetDirectives, getHostElement as ɵgetHostElement, getInjectableDef as ɵgetInjectableDef, getLContext as ɵgetLContext, getLocaleCurrencyCode as ɵgetLocaleCurrencyCode, getLocalePluralCase as ɵgetLocalePluralCase, getSanitizationBypassType as ɵgetSanitizationBypassType, ɵgetUnknownElementStrictMode, ɵgetUnknownPropertyStrictMode, _global as ɵglobal, injectChangeDetectorRef as ɵinjectChangeDetectorRef, internalCreateApplication as ɵinternalCreateApplication, isBoundToModule as ɵisBoundToModule, isEnvironmentProviders as ɵisEnvironmentProviders, isInjectable as ɵisInjectable, isNgModule as ɵisNgModule, isObservable as ɵisObservable, isPromise as ɵisPromise, isSubscribable as ɵisSubscribable, makeDecorator as ɵmakeDecorator, noSideEffects as ɵnoSideEffects, patchComponentDefWithScope as ɵpatchComponentDefWithScope, publishDefaultGlobalUtils$1 as ɵpublishDefaultGlobalUtils, publishGlobalUtil as ɵpublishGlobalUtil, registerLocaleData as ɵregisterLocaleData, resetCompiledComponents as ɵresetCompiledComponents, resetJitOptions as ɵresetJitOptions, resolveComponentResources as ɵresolveComponentResources, setAllowDuplicateNgModuleIdsForTest as ɵsetAllowDuplicateNgModuleIdsForTest, setClassMetadata as ɵsetClassMetadata, setCurrentInjector as ɵsetCurrentInjector, setDocument as ɵsetDocument, setLocaleId as ɵsetLocaleId, ɵsetUnknownElementStrictMode, ɵsetUnknownPropertyStrictMode, store as ɵstore, stringify as ɵstringify, transitiveScopesFor as ɵtransitiveScopesFor, unregisterAllLocaleData as ɵunregisterLocaleData, unwrapSafeValue as ɵunwrapSafeValue, ɵɵCopyDefinitionFeature, FactoryTarget as ɵɵFactoryTarget, ɵɵHostDirectivesFeature, ɵɵInheritDefinitionFeature, ɵɵNgOnChangesFeature, ɵɵProvidersFeature, ɵɵStandaloneFeature, ɵɵadvance, ɵɵattribute, ɵɵattributeInterpolate1, ɵɵattributeInterpolate2, ɵɵattributeInterpolate3, ɵɵattributeInterpolate4, ɵɵattributeInterpolate5, ɵɵattributeInterpolate6, ɵɵattributeInterpolate7, ɵɵattributeInterpolate8, ɵɵattributeInterpolateV, ɵɵclassMap, ɵɵclassMapInterpolate1, ɵɵclassMapInterpolate2, ɵɵclassMapInterpolate3, ɵɵclassMapInterpolate4, ɵɵclassMapInterpolate5, ɵɵclassMapInterpolate6, ɵɵclassMapInterpolate7, ɵɵclassMapInterpolate8, ɵɵclassMapInterpolateV, ɵɵclassProp, ɵɵcontentQuery, ɵɵdefineComponent, ɵɵdefineDirective, ɵɵdefineInjectable, ɵɵdefineInjector, ɵɵdefineNgModule, ɵɵdefinePipe, ɵɵdirectiveInject, ɵɵdisableBindings, ɵɵelement, ɵɵelementContainer, ɵɵelementContainerEnd, ɵɵelementContainerStart, ɵɵelementEnd, ɵɵelementStart, ɵɵenableBindings, ɵɵgetCurrentView, ɵɵgetInheritedFactory, ɵɵhostProperty, ɵɵi18n, ɵɵi18nApply, ɵɵi18nAttributes, ɵɵi18nEnd, ɵɵi18nExp, ɵɵi18nPostprocess, ɵɵi18nStart, ɵɵinject, ɵɵinjectAttribute, ɵɵinvalidFactory, ɵɵinvalidFactoryDep, ɵɵlistener, ɵɵloadQuery, ɵɵnamespaceHTML, ɵɵnamespaceMathML, ɵɵnamespaceSVG, ɵɵnextContext, ɵɵngDeclareClassMetadata, ɵɵngDeclareComponent, ɵɵngDeclareDirective, ɵɵngDeclareFactory, ɵɵngDeclareInjectable, ɵɵngDeclareInjector, ɵɵngDeclareNgModule, ɵɵngDeclarePipe, ɵɵpipe, ɵɵpipeBind1, ɵɵpipeBind2, ɵɵpipeBind3, ɵɵpipeBind4, ɵɵpipeBindV, ɵɵprojection, ɵɵprojectionDef, ɵɵproperty, ɵɵpropertyInterpolate, ɵɵpropertyInterpolate1, ɵɵpropertyInterpolate2, ɵɵpropertyInterpolate3, ɵɵpropertyInterpolate4, ɵɵpropertyInterpolate5, ɵɵpropertyInterpolate6, ɵɵpropertyInterpolate7, ɵɵpropertyInterpolate8, ɵɵpropertyInterpolateV, ɵɵpureFunction0, ɵɵpureFunction1, ɵɵpureFunction2, ɵɵpureFunction3, ɵɵpureFunction4, ɵɵpureFunction5, ɵɵpureFunction6, ɵɵpureFunction7, ɵɵpureFunction8, ɵɵpureFunctionV, ɵɵqueryRefresh, ɵɵreference, registerNgModuleType as ɵɵregisterNgModuleType, ɵɵresetView, ɵɵresolveBody, ɵɵresolveDocument, ɵɵresolveWindow, ɵɵrestoreView, ɵɵsanitizeHtml, ɵɵsanitizeResourceUrl, ɵɵsanitizeScript, ɵɵsanitizeStyle, ɵɵsanitizeUrl, ɵɵsanitizeUrlOrResourceUrl, ɵɵsetComponentScope, ɵɵsetNgModuleScope, ɵɵstyleMap, ɵɵstyleMapInterpolate1, ɵɵstyleMapInterpolate2, ɵɵstyleMapInterpolate3, ɵɵstyleMapInterpolate4, ɵɵstyleMapInterpolate5, ɵɵstyleMapInterpolate6, ɵɵstyleMapInterpolate7, ɵɵstyleMapInterpolate8, ɵɵstyleMapInterpolateV, ɵɵstyleProp, ɵɵstylePropInterpolate1, ɵɵstylePropInterpolate2, ɵɵstylePropInterpolate3, ɵɵstylePropInterpolate4, ɵɵstylePropInterpolate5, ɵɵstylePropInterpolate6, ɵɵstylePropInterpolate7, ɵɵstylePropInterpolate8, ɵɵstylePropInterpolateV, ɵɵsyntheticHostListener, ɵɵsyntheticHostProperty, ɵɵtemplate, ɵɵtemplateRefExtractor, ɵɵtext, ɵɵtextInterpolate, ɵɵtextInterpolate1, ɵɵtextInterpolate2, ɵɵtextInterpolate3, ɵɵtextInterpolate4, ɵɵtextInterpolate5, ɵɵtextInterpolate6, ɵɵtextInterpolate7, ɵɵtextInterpolate8, ɵɵtextInterpolateV, ɵɵtrustConstantHtml, ɵɵtrustConstantResourceUrl, ɵɵvalidateIframeAttribute, ɵɵviewQuery };\n","/**\n * @license Angular v15.2.10\n * (c) 2010-2022 Google LLC. https://angular.io/\n * License: MIT\n */\n\nimport * as i0 from '@angular/core';\nimport { Directive, InjectionToken, forwardRef, Optional, Inject, ɵisPromise, ɵisObservable, ɵRuntimeError, Self, EventEmitter, Input, Host, SkipSelf, ɵcoerceToBoolean, ChangeDetectorRef, Output, NgModule, Injectable, inject, Version } from '@angular/core';\nimport { ɵgetDOM } from '@angular/common';\nimport { from, forkJoin } from 'rxjs';\nimport { map } from 'rxjs/operators';\n\n/**\n * Base class for all ControlValueAccessor classes defined in Forms package.\n * Contains common logic and utility functions.\n *\n * Note: this is an *internal-only* class and should not be extended or used directly in\n * applications code.\n */\nclass BaseControlValueAccessor {\n    constructor(_renderer, _elementRef) {\n        this._renderer = _renderer;\n        this._elementRef = _elementRef;\n        /**\n         * The registered callback function called when a change or input event occurs on the input\n         * element.\n         * @nodoc\n         */\n        this.onChange = (_) => { };\n        /**\n         * The registered callback function called when a blur event occurs on the input element.\n         * @nodoc\n         */\n        this.onTouched = () => { };\n    }\n    /**\n     * Helper method that sets a property on a target element using the current Renderer\n     * implementation.\n     * @nodoc\n     */\n    setProperty(key, value) {\n        this._renderer.setProperty(this._elementRef.nativeElement, key, value);\n    }\n    /**\n     * Registers a function called when the control is touched.\n     * @nodoc\n     */\n    registerOnTouched(fn) {\n        this.onTouched = fn;\n    }\n    /**\n     * Registers a function called when the control value changes.\n     * @nodoc\n     */\n    registerOnChange(fn) {\n        this.onChange = fn;\n    }\n    /**\n     * Sets the \"disabled\" property on the range input element.\n     * @nodoc\n     */\n    setDisabledState(isDisabled) {\n        this.setProperty('disabled', isDisabled);\n    }\n}\nBaseControlValueAccessor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: BaseControlValueAccessor, deps: [{ token: i0.Renderer2 }, { token: i0.ElementRef }], target: i0.ɵɵFactoryTarget.Directive });\nBaseControlValueAccessor.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: BaseControlValueAccessor, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: BaseControlValueAccessor, decorators: [{\n            type: Directive\n        }], ctorParameters: function () { return [{ type: i0.Renderer2 }, { type: i0.ElementRef }]; } });\n/**\n * Base class for all built-in ControlValueAccessor classes (except DefaultValueAccessor, which is\n * used in case no other CVAs can be found). We use this class to distinguish between default CVA,\n * built-in CVAs and custom CVAs, so that Forms logic can recognize built-in CVAs and treat custom\n * ones with higher priority (when both built-in and custom CVAs are present).\n *\n * Note: this is an *internal-only* class and should not be extended or used directly in\n * applications code.\n */\nclass BuiltInControlValueAccessor extends BaseControlValueAccessor {\n}\nBuiltInControlValueAccessor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: BuiltInControlValueAccessor, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nBuiltInControlValueAccessor.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: BuiltInControlValueAccessor, usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: BuiltInControlValueAccessor, decorators: [{\n            type: Directive\n        }] });\n/**\n * Used to provide a `ControlValueAccessor` for form controls.\n *\n * See `DefaultValueAccessor` for how to implement one.\n *\n * @publicApi\n */\nconst NG_VALUE_ACCESSOR = new InjectionToken('NgValueAccessor');\n\nconst CHECKBOX_VALUE_ACCESSOR = {\n    provide: NG_VALUE_ACCESSOR,\n    useExisting: forwardRef(() => CheckboxControlValueAccessor),\n    multi: true,\n};\n/**\n * @description\n * A `ControlValueAccessor` for writing a value and listening to changes on a checkbox input\n * element.\n *\n * @usageNotes\n *\n * ### Using a checkbox with a reactive form.\n *\n * The following example shows how to use a checkbox with a reactive form.\n *\n * ```ts\n * const rememberLoginControl = new FormControl();\n * ```\n *\n * ```\n * <input type=\"checkbox\" [formControl]=\"rememberLoginControl\">\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass CheckboxControlValueAccessor extends BuiltInControlValueAccessor {\n    /**\n     * Sets the \"checked\" property on the input element.\n     * @nodoc\n     */\n    writeValue(value) {\n        this.setProperty('checked', value);\n    }\n}\nCheckboxControlValueAccessor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: CheckboxControlValueAccessor, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nCheckboxControlValueAccessor.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: CheckboxControlValueAccessor, selector: \"input[type=checkbox][formControlName],input[type=checkbox][formControl],input[type=checkbox][ngModel]\", host: { listeners: { \"change\": \"onChange($event.target.checked)\", \"blur\": \"onTouched()\" } }, providers: [CHECKBOX_VALUE_ACCESSOR], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: CheckboxControlValueAccessor, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: 'input[type=checkbox][formControlName],input[type=checkbox][formControl],input[type=checkbox][ngModel]',\n                    host: { '(change)': 'onChange($event.target.checked)', '(blur)': 'onTouched()' },\n                    providers: [CHECKBOX_VALUE_ACCESSOR]\n                }]\n        }] });\n\nconst DEFAULT_VALUE_ACCESSOR = {\n    provide: NG_VALUE_ACCESSOR,\n    useExisting: forwardRef(() => DefaultValueAccessor),\n    multi: true\n};\n/**\n * We must check whether the agent is Android because composition events\n * behave differently between iOS and Android.\n */\nfunction _isAndroid() {\n    const userAgent = ɵgetDOM() ? ɵgetDOM().getUserAgent() : '';\n    return /android (\\d+)/.test(userAgent.toLowerCase());\n}\n/**\n * @description\n * Provide this token to control if form directives buffer IME input until\n * the \"compositionend\" event occurs.\n * @publicApi\n */\nconst COMPOSITION_BUFFER_MODE = new InjectionToken('CompositionEventMode');\n/**\n * The default `ControlValueAccessor` for writing a value and listening to changes on input\n * elements. The accessor is used by the `FormControlDirective`, `FormControlName`, and\n * `NgModel` directives.\n *\n * {@searchKeywords ngDefaultControl}\n *\n * @usageNotes\n *\n * ### Using the default value accessor\n *\n * The following example shows how to use an input element that activates the default value accessor\n * (in this case, a text field).\n *\n * ```ts\n * const firstNameControl = new FormControl();\n * ```\n *\n * ```\n * <input type=\"text\" [formControl]=\"firstNameControl\">\n * ```\n *\n * This value accessor is used by default for `<input type=\"text\">` and `<textarea>` elements, but\n * you could also use it for custom components that have similar behavior and do not require special\n * processing. In order to attach the default value accessor to a custom element, add the\n * `ngDefaultControl` attribute as shown below.\n *\n * ```\n * <custom-input-component ngDefaultControl [(ngModel)]=\"value\"></custom-input-component>\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass DefaultValueAccessor extends BaseControlValueAccessor {\n    constructor(renderer, elementRef, _compositionMode) {\n        super(renderer, elementRef);\n        this._compositionMode = _compositionMode;\n        /** Whether the user is creating a composition string (IME events). */\n        this._composing = false;\n        if (this._compositionMode == null) {\n            this._compositionMode = !_isAndroid();\n        }\n    }\n    /**\n     * Sets the \"value\" property on the input element.\n     * @nodoc\n     */\n    writeValue(value) {\n        const normalizedValue = value == null ? '' : value;\n        this.setProperty('value', normalizedValue);\n    }\n    /** @internal */\n    _handleInput(value) {\n        if (!this._compositionMode || (this._compositionMode && !this._composing)) {\n            this.onChange(value);\n        }\n    }\n    /** @internal */\n    _compositionStart() {\n        this._composing = true;\n    }\n    /** @internal */\n    _compositionEnd(value) {\n        this._composing = false;\n        this._compositionMode && this.onChange(value);\n    }\n}\nDefaultValueAccessor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: DefaultValueAccessor, deps: [{ token: i0.Renderer2 }, { token: i0.ElementRef }, { token: COMPOSITION_BUFFER_MODE, optional: true }], target: i0.ɵɵFactoryTarget.Directive });\nDefaultValueAccessor.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: DefaultValueAccessor, selector: \"input:not([type=checkbox])[formControlName],textarea[formControlName],input:not([type=checkbox])[formControl],textarea[formControl],input:not([type=checkbox])[ngModel],textarea[ngModel],[ngDefaultControl]\", host: { listeners: { \"input\": \"$any(this)._handleInput($event.target.value)\", \"blur\": \"onTouched()\", \"compositionstart\": \"$any(this)._compositionStart()\", \"compositionend\": \"$any(this)._compositionEnd($event.target.value)\" } }, providers: [DEFAULT_VALUE_ACCESSOR], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: DefaultValueAccessor, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: 'input:not([type=checkbox])[formControlName],textarea[formControlName],input:not([type=checkbox])[formControl],textarea[formControl],input:not([type=checkbox])[ngModel],textarea[ngModel],[ngDefaultControl]',\n                    // TODO: vsavkin replace the above selector with the one below it once\n                    // https://github.com/angular/angular/issues/3011 is implemented\n                    // selector: '[ngModel],[formControl],[formControlName]',\n                    host: {\n                        '(input)': '$any(this)._handleInput($event.target.value)',\n                        '(blur)': 'onTouched()',\n                        '(compositionstart)': '$any(this)._compositionStart()',\n                        '(compositionend)': '$any(this)._compositionEnd($event.target.value)'\n                    },\n                    providers: [DEFAULT_VALUE_ACCESSOR]\n                }]\n        }], ctorParameters: function () { return [{ type: i0.Renderer2 }, { type: i0.ElementRef }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [COMPOSITION_BUFFER_MODE]\n                }] }]; } });\n\nconst NG_DEV_MODE$1 = typeof ngDevMode === 'undefined' || !!ngDevMode;\nfunction isEmptyInputValue(value) {\n    /**\n     * Check if the object is a string or array before evaluating the length attribute.\n     * This avoids falsely rejecting objects that contain a custom length attribute.\n     * For example, the object {id: 1, length: 0, width: 0} should not be returned as empty.\n     */\n    return value == null ||\n        ((typeof value === 'string' || Array.isArray(value)) && value.length === 0);\n}\nfunction hasValidLength(value) {\n    // non-strict comparison is intentional, to check for both `null` and `undefined` values\n    return value != null && typeof value.length === 'number';\n}\n/**\n * @description\n * An `InjectionToken` for registering additional synchronous validators used with\n * `AbstractControl`s.\n *\n * @see `NG_ASYNC_VALIDATORS`\n *\n * @usageNotes\n *\n * ### Providing a custom validator\n *\n * The following example registers a custom validator directive. Adding the validator to the\n * existing collection of validators requires the `multi: true` option.\n *\n * ```typescript\n * @Directive({\n *   selector: '[customValidator]',\n *   providers: [{provide: NG_VALIDATORS, useExisting: CustomValidatorDirective, multi: true}]\n * })\n * class CustomValidatorDirective implements Validator {\n *   validate(control: AbstractControl): ValidationErrors | null {\n *     return { 'custom': true };\n *   }\n * }\n * ```\n *\n * @publicApi\n */\nconst NG_VALIDATORS = new InjectionToken('NgValidators');\n/**\n * @description\n * An `InjectionToken` for registering additional asynchronous validators used with\n * `AbstractControl`s.\n *\n * @see `NG_VALIDATORS`\n *\n * @usageNotes\n *\n * ### Provide a custom async validator directive\n *\n * The following example implements the `AsyncValidator` interface to create an\n * async validator directive with a custom error key.\n *\n * ```typescript\n * @Directive({\n *   selector: '[customAsyncValidator]',\n *   providers: [{provide: NG_ASYNC_VALIDATORS, useExisting: CustomAsyncValidatorDirective, multi:\n * true}]\n * })\n * class CustomAsyncValidatorDirective implements AsyncValidator {\n *   validate(control: AbstractControl): Promise<ValidationErrors|null> {\n *     return Promise.resolve({'custom': true});\n *   }\n * }\n * ```\n *\n * @publicApi\n */\nconst NG_ASYNC_VALIDATORS = new InjectionToken('NgAsyncValidators');\n/**\n * A regular expression that matches valid e-mail addresses.\n *\n * At a high level, this regexp matches e-mail addresses of the format `local-part@tld`, where:\n * - `local-part` consists of one or more of the allowed characters (alphanumeric and some\n *   punctuation symbols).\n * - `local-part` cannot begin or end with a period (`.`).\n * - `local-part` cannot be longer than 64 characters.\n * - `tld` consists of one or more `labels` separated by periods (`.`). For example `localhost` or\n *   `foo.com`.\n * - A `label` consists of one or more of the allowed characters (alphanumeric, dashes (`-`) and\n *   periods (`.`)).\n * - A `label` cannot begin or end with a dash (`-`) or a period (`.`).\n * - A `label` cannot be longer than 63 characters.\n * - The whole address cannot be longer than 254 characters.\n *\n * ## Implementation background\n *\n * This regexp was ported over from AngularJS (see there for git history):\n * https://github.com/angular/angular.js/blob/c133ef836/src/ng/directive/input.js#L27\n * It is based on the\n * [WHATWG version](https://html.spec.whatwg.org/multipage/input.html#valid-e-mail-address) with\n * some enhancements to incorporate more RFC rules (such as rules related to domain names and the\n * lengths of different parts of the address). The main differences from the WHATWG version are:\n *   - Disallow `local-part` to begin or end with a period (`.`).\n *   - Disallow `local-part` length to exceed 64 characters.\n *   - Disallow total address length to exceed 254 characters.\n *\n * See [this commit](https://github.com/angular/angular.js/commit/f3f5cf72e) for more details.\n */\nconst EMAIL_REGEXP = /^(?=.{1,254}$)(?=.{1,64}@)[a-zA-Z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-zA-Z0-9!#$%&'*+/=?^_`{|}~-]+)*@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/;\n/**\n * @description\n * Provides a set of built-in validators that can be used by form controls.\n *\n * A validator is a function that processes a `FormControl` or collection of\n * controls and returns an error map or null. A null map means that validation has passed.\n *\n * @see [Form Validation](/guide/form-validation)\n *\n * @publicApi\n */\nclass Validators {\n    /**\n     * @description\n     * Validator that requires the control's value to be greater than or equal to the provided number.\n     *\n     * @usageNotes\n     *\n     * ### Validate against a minimum of 3\n     *\n     * ```typescript\n     * const control = new FormControl(2, Validators.min(3));\n     *\n     * console.log(control.errors); // {min: {min: 3, actual: 2}}\n     * ```\n     *\n     * @returns A validator function that returns an error map with the\n     * `min` property if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n    static min(min) {\n        return minValidator(min);\n    }\n    /**\n     * @description\n     * Validator that requires the control's value to be less than or equal to the provided number.\n     *\n     * @usageNotes\n     *\n     * ### Validate against a maximum of 15\n     *\n     * ```typescript\n     * const control = new FormControl(16, Validators.max(15));\n     *\n     * console.log(control.errors); // {max: {max: 15, actual: 16}}\n     * ```\n     *\n     * @returns A validator function that returns an error map with the\n     * `max` property if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n    static max(max) {\n        return maxValidator(max);\n    }\n    /**\n     * @description\n     * Validator that requires the control have a non-empty value.\n     *\n     * @usageNotes\n     *\n     * ### Validate that the field is non-empty\n     *\n     * ```typescript\n     * const control = new FormControl('', Validators.required);\n     *\n     * console.log(control.errors); // {required: true}\n     * ```\n     *\n     * @returns An error map with the `required` property\n     * if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n    static required(control) {\n        return requiredValidator(control);\n    }\n    /**\n     * @description\n     * Validator that requires the control's value be true. This validator is commonly\n     * used for required checkboxes.\n     *\n     * @usageNotes\n     *\n     * ### Validate that the field value is true\n     *\n     * ```typescript\n     * const control = new FormControl('some value', Validators.requiredTrue);\n     *\n     * console.log(control.errors); // {required: true}\n     * ```\n     *\n     * @returns An error map that contains the `required` property\n     * set to `true` if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n    static requiredTrue(control) {\n        return requiredTrueValidator(control);\n    }\n    /**\n     * @description\n     * Validator that requires the control's value pass an email validation test.\n     *\n     * Tests the value using a [regular\n     * expression](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions)\n     * pattern suitable for common use cases. The pattern is based on the definition of a valid email\n     * address in the [WHATWG HTML\n     * specification](https://html.spec.whatwg.org/multipage/input.html#valid-e-mail-address) with\n     * some enhancements to incorporate more RFC rules (such as rules related to domain names and the\n     * lengths of different parts of the address).\n     *\n     * The differences from the WHATWG version include:\n     * - Disallow `local-part` (the part before the `@` symbol) to begin or end with a period (`.`).\n     * - Disallow `local-part` to be longer than 64 characters.\n     * - Disallow the whole address to be longer than 254 characters.\n     *\n     * If this pattern does not satisfy your business needs, you can use `Validators.pattern()` to\n     * validate the value against a different pattern.\n     *\n     * @usageNotes\n     *\n     * ### Validate that the field matches a valid email pattern\n     *\n     * ```typescript\n     * const control = new FormControl('bad@', Validators.email);\n     *\n     * console.log(control.errors); // {email: true}\n     * ```\n     *\n     * @returns An error map with the `email` property\n     * if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n    static email(control) {\n        return emailValidator(control);\n    }\n    /**\n     * @description\n     * Validator that requires the length of the control's value to be greater than or equal\n     * to the provided minimum length. This validator is also provided by default if you use the\n     * the HTML5 `minlength` attribute. Note that the `minLength` validator is intended to be used\n     * only for types that have a numeric `length` property, such as strings or arrays. The\n     * `minLength` validator logic is also not invoked for values when their `length` property is 0\n     * (for example in case of an empty string or an empty array), to support optional controls. You\n     * can use the standard `required` validator if empty values should not be considered valid.\n     *\n     * @usageNotes\n     *\n     * ### Validate that the field has a minimum of 3 characters\n     *\n     * ```typescript\n     * const control = new FormControl('ng', Validators.minLength(3));\n     *\n     * console.log(control.errors); // {minlength: {requiredLength: 3, actualLength: 2}}\n     * ```\n     *\n     * ```html\n     * <input minlength=\"5\">\n     * ```\n     *\n     * @returns A validator function that returns an error map with the\n     * `minlength` property if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n    static minLength(minLength) {\n        return minLengthValidator(minLength);\n    }\n    /**\n     * @description\n     * Validator that requires the length of the control's value to be less than or equal\n     * to the provided maximum length. This validator is also provided by default if you use the\n     * the HTML5 `maxlength` attribute. Note that the `maxLength` validator is intended to be used\n     * only for types that have a numeric `length` property, such as strings or arrays.\n     *\n     * @usageNotes\n     *\n     * ### Validate that the field has maximum of 5 characters\n     *\n     * ```typescript\n     * const control = new FormControl('Angular', Validators.maxLength(5));\n     *\n     * console.log(control.errors); // {maxlength: {requiredLength: 5, actualLength: 7}}\n     * ```\n     *\n     * ```html\n     * <input maxlength=\"5\">\n     * ```\n     *\n     * @returns A validator function that returns an error map with the\n     * `maxlength` property if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n    static maxLength(maxLength) {\n        return maxLengthValidator(maxLength);\n    }\n    /**\n     * @description\n     * Validator that requires the control's value to match a regex pattern. This validator is also\n     * provided by default if you use the HTML5 `pattern` attribute.\n     *\n     * @usageNotes\n     *\n     * ### Validate that the field only contains letters or spaces\n     *\n     * ```typescript\n     * const control = new FormControl('1', Validators.pattern('[a-zA-Z ]*'));\n     *\n     * console.log(control.errors); // {pattern: {requiredPattern: '^[a-zA-Z ]*$', actualValue: '1'}}\n     * ```\n     *\n     * ```html\n     * <input pattern=\"[a-zA-Z ]*\">\n     * ```\n     *\n     * ### Pattern matching with the global or sticky flag\n     *\n     * `RegExp` objects created with the `g` or `y` flags that are passed into `Validators.pattern`\n     * can produce different results on the same input when validations are run consecutively. This is\n     * due to how the behavior of `RegExp.prototype.test` is\n     * specified in [ECMA-262](https://tc39.es/ecma262/#sec-regexpbuiltinexec)\n     * (`RegExp` preserves the index of the last match when the global or sticky flag is used).\n     * Due to this behavior, it is recommended that when using\n     * `Validators.pattern` you **do not** pass in a `RegExp` object with either the global or sticky\n     * flag enabled.\n     *\n     * ```typescript\n     * // Not recommended (since the `g` flag is used)\n     * const controlOne = new FormControl('1', Validators.pattern(/foo/g));\n     *\n     * // Good\n     * const controlTwo = new FormControl('1', Validators.pattern(/foo/));\n     * ```\n     *\n     * @param pattern A regular expression to be used as is to test the values, or a string.\n     * If a string is passed, the `^` character is prepended and the `$` character is\n     * appended to the provided string (if not already present), and the resulting regular\n     * expression is used to test the values.\n     *\n     * @returns A validator function that returns an error map with the\n     * `pattern` property if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n    static pattern(pattern) {\n        return patternValidator(pattern);\n    }\n    /**\n     * @description\n     * Validator that performs no operation.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n    static nullValidator(control) {\n        return nullValidator(control);\n    }\n    static compose(validators) {\n        return compose(validators);\n    }\n    /**\n     * @description\n     * Compose multiple async validators into a single function that returns the union\n     * of the individual error objects for the provided control.\n     *\n     * @returns A validator function that returns an error map with the\n     * merged error objects of the async validators if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n    static composeAsync(validators) {\n        return composeAsync(validators);\n    }\n}\n/**\n * Validator that requires the control's value to be greater than or equal to the provided number.\n * See `Validators.min` for additional information.\n */\nfunction minValidator(min) {\n    return (control) => {\n        if (isEmptyInputValue(control.value) || isEmptyInputValue(min)) {\n            return null; // don't validate empty values to allow optional controls\n        }\n        const value = parseFloat(control.value);\n        // Controls with NaN values after parsing should be treated as not having a\n        // minimum, per the HTML forms spec: https://www.w3.org/TR/html5/forms.html#attr-input-min\n        return !isNaN(value) && value < min ? { 'min': { 'min': min, 'actual': control.value } } : null;\n    };\n}\n/**\n * Validator that requires the control's value to be less than or equal to the provided number.\n * See `Validators.max` for additional information.\n */\nfunction maxValidator(max) {\n    return (control) => {\n        if (isEmptyInputValue(control.value) || isEmptyInputValue(max)) {\n            return null; // don't validate empty values to allow optional controls\n        }\n        const value = parseFloat(control.value);\n        // Controls with NaN values after parsing should be treated as not having a\n        // maximum, per the HTML forms spec: https://www.w3.org/TR/html5/forms.html#attr-input-max\n        return !isNaN(value) && value > max ? { 'max': { 'max': max, 'actual': control.value } } : null;\n    };\n}\n/**\n * Validator that requires the control have a non-empty value.\n * See `Validators.required` for additional information.\n */\nfunction requiredValidator(control) {\n    return isEmptyInputValue(control.value) ? { 'required': true } : null;\n}\n/**\n * Validator that requires the control's value be true. This validator is commonly\n * used for required checkboxes.\n * See `Validators.requiredTrue` for additional information.\n */\nfunction requiredTrueValidator(control) {\n    return control.value === true ? null : { 'required': true };\n}\n/**\n * Validator that requires the control's value pass an email validation test.\n * See `Validators.email` for additional information.\n */\nfunction emailValidator(control) {\n    if (isEmptyInputValue(control.value)) {\n        return null; // don't validate empty values to allow optional controls\n    }\n    return EMAIL_REGEXP.test(control.value) ? null : { 'email': true };\n}\n/**\n * Validator that requires the length of the control's value to be greater than or equal\n * to the provided minimum length. See `Validators.minLength` for additional information.\n */\nfunction minLengthValidator(minLength) {\n    return (control) => {\n        if (isEmptyInputValue(control.value) || !hasValidLength(control.value)) {\n            // don't validate empty values to allow optional controls\n            // don't validate values without `length` property\n            return null;\n        }\n        return control.value.length < minLength ?\n            { 'minlength': { 'requiredLength': minLength, 'actualLength': control.value.length } } :\n            null;\n    };\n}\n/**\n * Validator that requires the length of the control's value to be less than or equal\n * to the provided maximum length. See `Validators.maxLength` for additional information.\n */\nfunction maxLengthValidator(maxLength) {\n    return (control) => {\n        return hasValidLength(control.value) && control.value.length > maxLength ?\n            { 'maxlength': { 'requiredLength': maxLength, 'actualLength': control.value.length } } :\n            null;\n    };\n}\n/**\n * Validator that requires the control's value to match a regex pattern.\n * See `Validators.pattern` for additional information.\n */\nfunction patternValidator(pattern) {\n    if (!pattern)\n        return nullValidator;\n    let regex;\n    let regexStr;\n    if (typeof pattern === 'string') {\n        regexStr = '';\n        if (pattern.charAt(0) !== '^')\n            regexStr += '^';\n        regexStr += pattern;\n        if (pattern.charAt(pattern.length - 1) !== '$')\n            regexStr += '$';\n        regex = new RegExp(regexStr);\n    }\n    else {\n        regexStr = pattern.toString();\n        regex = pattern;\n    }\n    return (control) => {\n        if (isEmptyInputValue(control.value)) {\n            return null; // don't validate empty values to allow optional controls\n        }\n        const value = control.value;\n        return regex.test(value) ? null :\n            { 'pattern': { 'requiredPattern': regexStr, 'actualValue': value } };\n    };\n}\n/**\n * Function that has `ValidatorFn` shape, but performs no operation.\n */\nfunction nullValidator(control) {\n    return null;\n}\nfunction isPresent(o) {\n    return o != null;\n}\nfunction toObservable(value) {\n    const obs = ɵisPromise(value) ? from(value) : value;\n    if (NG_DEV_MODE$1 && !(ɵisObservable(obs))) {\n        let errorMessage = `Expected async validator to return Promise or Observable.`;\n        // A synchronous validator will return object or null.\n        if (typeof value === 'object') {\n            errorMessage +=\n                ' Are you using a synchronous validator where an async validator is expected?';\n        }\n        throw new ɵRuntimeError(-1101 /* RuntimeErrorCode.WRONG_VALIDATOR_RETURN_TYPE */, errorMessage);\n    }\n    return obs;\n}\nfunction mergeErrors(arrayOfErrors) {\n    let res = {};\n    arrayOfErrors.forEach((errors) => {\n        res = errors != null ? { ...res, ...errors } : res;\n    });\n    return Object.keys(res).length === 0 ? null : res;\n}\nfunction executeValidators(control, validators) {\n    return validators.map(validator => validator(control));\n}\nfunction isValidatorFn(validator) {\n    return !validator.validate;\n}\n/**\n * Given the list of validators that may contain both functions as well as classes, return the list\n * of validator functions (convert validator classes into validator functions). This is needed to\n * have consistent structure in validators list before composing them.\n *\n * @param validators The set of validators that may contain validators both in plain function form\n *     as well as represented as a validator class.\n */\nfunction normalizeValidators(validators) {\n    return validators.map(validator => {\n        return isValidatorFn(validator) ?\n            validator :\n            ((c) => validator.validate(c));\n    });\n}\n/**\n * Merges synchronous validators into a single validator function.\n * See `Validators.compose` for additional information.\n */\nfunction compose(validators) {\n    if (!validators)\n        return null;\n    const presentValidators = validators.filter(isPresent);\n    if (presentValidators.length == 0)\n        return null;\n    return function (control) {\n        return mergeErrors(executeValidators(control, presentValidators));\n    };\n}\n/**\n * Accepts a list of validators of different possible shapes (`Validator` and `ValidatorFn`),\n * normalizes the list (converts everything to `ValidatorFn`) and merges them into a single\n * validator function.\n */\nfunction composeValidators(validators) {\n    return validators != null ? compose(normalizeValidators(validators)) : null;\n}\n/**\n * Merges asynchronous validators into a single validator function.\n * See `Validators.composeAsync` for additional information.\n */\nfunction composeAsync(validators) {\n    if (!validators)\n        return null;\n    const presentValidators = validators.filter(isPresent);\n    if (presentValidators.length == 0)\n        return null;\n    return function (control) {\n        const observables = executeValidators(control, presentValidators).map(toObservable);\n        return forkJoin(observables).pipe(map(mergeErrors));\n    };\n}\n/**\n * Accepts a list of async validators of different possible shapes (`AsyncValidator` and\n * `AsyncValidatorFn`), normalizes the list (converts everything to `AsyncValidatorFn`) and merges\n * them into a single validator function.\n */\nfunction composeAsyncValidators(validators) {\n    return validators != null ? composeAsync(normalizeValidators(validators)) :\n        null;\n}\n/**\n * Merges raw control validators with a given directive validator and returns the combined list of\n * validators as an array.\n */\nfunction mergeValidators(controlValidators, dirValidator) {\n    if (controlValidators === null)\n        return [dirValidator];\n    return Array.isArray(controlValidators) ? [...controlValidators, dirValidator] :\n        [controlValidators, dirValidator];\n}\n/**\n * Retrieves the list of raw synchronous validators attached to a given control.\n */\nfunction getControlValidators(control) {\n    return control._rawValidators;\n}\n/**\n * Retrieves the list of raw asynchronous validators attached to a given control.\n */\nfunction getControlAsyncValidators(control) {\n    return control._rawAsyncValidators;\n}\n/**\n * Accepts a singleton validator, an array, or null, and returns an array type with the provided\n * validators.\n *\n * @param validators A validator, validators, or null.\n * @returns A validators array.\n */\nfunction makeValidatorsArray(validators) {\n    if (!validators)\n        return [];\n    return Array.isArray(validators) ? validators : [validators];\n}\n/**\n * Determines whether a validator or validators array has a given validator.\n *\n * @param validators The validator or validators to compare against.\n * @param validator The validator to check.\n * @returns Whether the validator is present.\n */\nfunction hasValidator(validators, validator) {\n    return Array.isArray(validators) ? validators.includes(validator) : validators === validator;\n}\n/**\n * Combines two arrays of validators into one. If duplicates are provided, only one will be added.\n *\n * @param validators The new validators.\n * @param currentValidators The base array of current validators.\n * @returns An array of validators.\n */\nfunction addValidators(validators, currentValidators) {\n    const current = makeValidatorsArray(currentValidators);\n    const validatorsToAdd = makeValidatorsArray(validators);\n    validatorsToAdd.forEach((v) => {\n        // Note: if there are duplicate entries in the new validators array,\n        // only the first one would be added to the current list of validators.\n        // Duplicate ones would be ignored since `hasValidator` would detect\n        // the presence of a validator function and we update the current list in place.\n        if (!hasValidator(current, v)) {\n            current.push(v);\n        }\n    });\n    return current;\n}\nfunction removeValidators(validators, currentValidators) {\n    return makeValidatorsArray(currentValidators).filter(v => !hasValidator(validators, v));\n}\n\n/**\n * @description\n * Base class for control directives.\n *\n * This class is only used internally in the `ReactiveFormsModule` and the `FormsModule`.\n *\n * @publicApi\n */\nclass AbstractControlDirective {\n    constructor() {\n        /**\n         * Set of synchronous validators as they were provided while calling `setValidators` function.\n         * @internal\n         */\n        this._rawValidators = [];\n        /**\n         * Set of asynchronous validators as they were provided while calling `setAsyncValidators`\n         * function.\n         * @internal\n         */\n        this._rawAsyncValidators = [];\n        /*\n         * The set of callbacks to be invoked when directive instance is being destroyed.\n         */\n        this._onDestroyCallbacks = [];\n    }\n    /**\n     * @description\n     * Reports the value of the control if it is present, otherwise null.\n     */\n    get value() {\n        return this.control ? this.control.value : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is valid. A control is considered valid if no\n     * validation errors exist with the current value.\n     * If the control is not present, null is returned.\n     */\n    get valid() {\n        return this.control ? this.control.valid : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is invalid, meaning that an error exists in the input value.\n     * If the control is not present, null is returned.\n     */\n    get invalid() {\n        return this.control ? this.control.invalid : null;\n    }\n    /**\n     * @description\n     * Reports whether a control is pending, meaning that that async validation is occurring and\n     * errors are not yet available for the input value. If the control is not present, null is\n     * returned.\n     */\n    get pending() {\n        return this.control ? this.control.pending : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is disabled, meaning that the control is disabled\n     * in the UI and is exempt from validation checks and excluded from aggregate\n     * values of ancestor controls. If the control is not present, null is returned.\n     */\n    get disabled() {\n        return this.control ? this.control.disabled : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is enabled, meaning that the control is included in ancestor\n     * calculations of validity or value. If the control is not present, null is returned.\n     */\n    get enabled() {\n        return this.control ? this.control.enabled : null;\n    }\n    /**\n     * @description\n     * Reports the control's validation errors. If the control is not present, null is returned.\n     */\n    get errors() {\n        return this.control ? this.control.errors : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is pristine, meaning that the user has not yet changed\n     * the value in the UI. If the control is not present, null is returned.\n     */\n    get pristine() {\n        return this.control ? this.control.pristine : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is dirty, meaning that the user has changed\n     * the value in the UI. If the control is not present, null is returned.\n     */\n    get dirty() {\n        return this.control ? this.control.dirty : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is touched, meaning that the user has triggered\n     * a `blur` event on it. If the control is not present, null is returned.\n     */\n    get touched() {\n        return this.control ? this.control.touched : null;\n    }\n    /**\n     * @description\n     * Reports the validation status of the control. Possible values include:\n     * 'VALID', 'INVALID', 'DISABLED', and 'PENDING'.\n     * If the control is not present, null is returned.\n     */\n    get status() {\n        return this.control ? this.control.status : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is untouched, meaning that the user has not yet triggered\n     * a `blur` event on it. If the control is not present, null is returned.\n     */\n    get untouched() {\n        return this.control ? this.control.untouched : null;\n    }\n    /**\n     * @description\n     * Returns a multicasting observable that emits a validation status whenever it is\n     * calculated for the control. If the control is not present, null is returned.\n     */\n    get statusChanges() {\n        return this.control ? this.control.statusChanges : null;\n    }\n    /**\n     * @description\n     * Returns a multicasting observable of value changes for the control that emits every time the\n     * value of the control changes in the UI or programmatically.\n     * If the control is not present, null is returned.\n     */\n    get valueChanges() {\n        return this.control ? this.control.valueChanges : null;\n    }\n    /**\n     * @description\n     * Returns an array that represents the path from the top-level form to this control.\n     * Each index is the string name of the control on that level.\n     */\n    get path() {\n        return null;\n    }\n    /**\n     * Sets synchronous validators for this directive.\n     * @internal\n     */\n    _setValidators(validators) {\n        this._rawValidators = validators || [];\n        this._composedValidatorFn = composeValidators(this._rawValidators);\n    }\n    /**\n     * Sets asynchronous validators for this directive.\n     * @internal\n     */\n    _setAsyncValidators(validators) {\n        this._rawAsyncValidators = validators || [];\n        this._composedAsyncValidatorFn = composeAsyncValidators(this._rawAsyncValidators);\n    }\n    /**\n     * @description\n     * Synchronous validator function composed of all the synchronous validators registered with this\n     * directive.\n     */\n    get validator() {\n        return this._composedValidatorFn || null;\n    }\n    /**\n     * @description\n     * Asynchronous validator function composed of all the asynchronous validators registered with\n     * this directive.\n     */\n    get asyncValidator() {\n        return this._composedAsyncValidatorFn || null;\n    }\n    /**\n     * Internal function to register callbacks that should be invoked\n     * when directive instance is being destroyed.\n     * @internal\n     */\n    _registerOnDestroy(fn) {\n        this._onDestroyCallbacks.push(fn);\n    }\n    /**\n     * Internal function to invoke all registered \"on destroy\" callbacks.\n     * Note: calling this function also clears the list of callbacks.\n     * @internal\n     */\n    _invokeOnDestroyCallbacks() {\n        this._onDestroyCallbacks.forEach(fn => fn());\n        this._onDestroyCallbacks = [];\n    }\n    /**\n     * @description\n     * Resets the control with the provided value if the control is present.\n     */\n    reset(value = undefined) {\n        if (this.control)\n            this.control.reset(value);\n    }\n    /**\n     * @description\n     * Reports whether the control with the given path has the error specified.\n     *\n     * @param errorCode The code of the error to check\n     * @param path A list of control names that designates how to move from the current control\n     * to the control that should be queried for errors.\n     *\n     * @usageNotes\n     * For example, for the following `FormGroup`:\n     *\n     * ```\n     * form = new FormGroup({\n     *   address: new FormGroup({ street: new FormControl() })\n     * });\n     * ```\n     *\n     * The path to the 'street' control from the root form would be 'address' -> 'street'.\n     *\n     * It can be provided to this method in one of two formats:\n     *\n     * 1. An array of string control names, e.g. `['address', 'street']`\n     * 1. A period-delimited list of control names in one string, e.g. `'address.street'`\n     *\n     * If no path is given, this method checks for the error on the current control.\n     *\n     * @returns whether the given error is present in the control at the given path.\n     *\n     * If the control is not present, false is returned.\n     */\n    hasError(errorCode, path) {\n        return this.control ? this.control.hasError(errorCode, path) : false;\n    }\n    /**\n     * @description\n     * Reports error data for the control with the given path.\n     *\n     * @param errorCode The code of the error to check\n     * @param path A list of control names that designates how to move from the current control\n     * to the control that should be queried for errors.\n     *\n     * @usageNotes\n     * For example, for the following `FormGroup`:\n     *\n     * ```\n     * form = new FormGroup({\n     *   address: new FormGroup({ street: new FormControl() })\n     * });\n     * ```\n     *\n     * The path to the 'street' control from the root form would be 'address' -> 'street'.\n     *\n     * It can be provided to this method in one of two formats:\n     *\n     * 1. An array of string control names, e.g. `['address', 'street']`\n     * 1. A period-delimited list of control names in one string, e.g. `'address.street'`\n     *\n     * @returns error data for that particular error. If the control or error is not present,\n     * null is returned.\n     */\n    getError(errorCode, path) {\n        return this.control ? this.control.getError(errorCode, path) : null;\n    }\n}\n\n/**\n * @description\n * A base class for directives that contain multiple registered instances of `NgControl`.\n * Only used by the forms module.\n *\n * @publicApi\n */\nclass ControlContainer extends AbstractControlDirective {\n    /**\n     * @description\n     * The top-level form directive for the control.\n     */\n    get formDirective() {\n        return null;\n    }\n    /**\n     * @description\n     * The path to this group.\n     */\n    get path() {\n        return null;\n    }\n}\n\n/**\n * @description\n * A base class that all `FormControl`-based directives extend. It binds a `FormControl`\n * object to a DOM element.\n *\n * @publicApi\n */\nclass NgControl extends AbstractControlDirective {\n    constructor() {\n        super(...arguments);\n        /**\n         * @description\n         * The parent form for the control.\n         *\n         * @internal\n         */\n        this._parent = null;\n        /**\n         * @description\n         * The name for the control\n         */\n        this.name = null;\n        /**\n         * @description\n         * The value accessor for the control\n         */\n        this.valueAccessor = null;\n    }\n}\n\n// DO NOT REFACTOR!\n// Each status is represented by a separate function to make sure that\n// advanced Closure Compiler optimizations related to property renaming\n// can work correctly.\nclass AbstractControlStatus {\n    constructor(cd) {\n        this._cd = cd;\n    }\n    get isTouched() {\n        return !!this._cd?.control?.touched;\n    }\n    get isUntouched() {\n        return !!this._cd?.control?.untouched;\n    }\n    get isPristine() {\n        return !!this._cd?.control?.pristine;\n    }\n    get isDirty() {\n        return !!this._cd?.control?.dirty;\n    }\n    get isValid() {\n        return !!this._cd?.control?.valid;\n    }\n    get isInvalid() {\n        return !!this._cd?.control?.invalid;\n    }\n    get isPending() {\n        return !!this._cd?.control?.pending;\n    }\n    get isSubmitted() {\n        // We check for the `submitted` field from `NgForm` and `FormGroupDirective` classes, but\n        // we avoid instanceof checks to prevent non-tree-shakable references to those types.\n        return !!this._cd?.submitted;\n    }\n}\nconst ngControlStatusHost = {\n    '[class.ng-untouched]': 'isUntouched',\n    '[class.ng-touched]': 'isTouched',\n    '[class.ng-pristine]': 'isPristine',\n    '[class.ng-dirty]': 'isDirty',\n    '[class.ng-valid]': 'isValid',\n    '[class.ng-invalid]': 'isInvalid',\n    '[class.ng-pending]': 'isPending',\n};\nconst ngGroupStatusHost = {\n    ...ngControlStatusHost,\n    '[class.ng-submitted]': 'isSubmitted',\n};\n/**\n * @description\n * Directive automatically applied to Angular form controls that sets CSS classes\n * based on control status.\n *\n * @usageNotes\n *\n * ### CSS classes applied\n *\n * The following classes are applied as the properties become true:\n *\n * * ng-valid\n * * ng-invalid\n * * ng-pending\n * * ng-pristine\n * * ng-dirty\n * * ng-untouched\n * * ng-touched\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass NgControlStatus extends AbstractControlStatus {\n    constructor(cd) {\n        super(cd);\n    }\n}\nNgControlStatus.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgControlStatus, deps: [{ token: NgControl, self: true }], target: i0.ɵɵFactoryTarget.Directive });\nNgControlStatus.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgControlStatus, selector: \"[formControlName],[ngModel],[formControl]\", host: { properties: { \"class.ng-untouched\": \"isUntouched\", \"class.ng-touched\": \"isTouched\", \"class.ng-pristine\": \"isPristine\", \"class.ng-dirty\": \"isDirty\", \"class.ng-valid\": \"isValid\", \"class.ng-invalid\": \"isInvalid\", \"class.ng-pending\": \"isPending\" } }, usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgControlStatus, decorators: [{\n            type: Directive,\n            args: [{ selector: '[formControlName],[ngModel],[formControl]', host: ngControlStatusHost }]\n        }], ctorParameters: function () { return [{ type: NgControl, decorators: [{\n                    type: Self\n                }] }]; } });\n/**\n * @description\n * Directive automatically applied to Angular form groups that sets CSS classes\n * based on control status (valid/invalid/dirty/etc). On groups, this includes the additional\n * class ng-submitted.\n *\n * @see `NgControlStatus`\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass NgControlStatusGroup extends AbstractControlStatus {\n    constructor(cd) {\n        super(cd);\n    }\n}\nNgControlStatusGroup.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgControlStatusGroup, deps: [{ token: ControlContainer, optional: true, self: true }], target: i0.ɵɵFactoryTarget.Directive });\nNgControlStatusGroup.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgControlStatusGroup, selector: \"[formGroupName],[formArrayName],[ngModelGroup],[formGroup],form:not([ngNoForm]),[ngForm]\", host: { properties: { \"class.ng-untouched\": \"isUntouched\", \"class.ng-touched\": \"isTouched\", \"class.ng-pristine\": \"isPristine\", \"class.ng-dirty\": \"isDirty\", \"class.ng-valid\": \"isValid\", \"class.ng-invalid\": \"isInvalid\", \"class.ng-pending\": \"isPending\", \"class.ng-submitted\": \"isSubmitted\" } }, usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgControlStatusGroup, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[formGroupName],[formArrayName],[ngModelGroup],[formGroup],form:not([ngNoForm]),[ngForm]',\n                    host: ngGroupStatusHost\n                }]\n        }], ctorParameters: function () { return [{ type: ControlContainer, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }] }]; } });\n\nconst formControlNameExample = `\n  <div [formGroup]=\"myGroup\">\n    <input formControlName=\"firstName\">\n  </div>\n\n  In your class:\n\n  this.myGroup = new FormGroup({\n      firstName: new FormControl()\n  });`;\nconst formGroupNameExample = `\n  <div [formGroup]=\"myGroup\">\n      <div formGroupName=\"person\">\n        <input formControlName=\"firstName\">\n      </div>\n  </div>\n\n  In your class:\n\n  this.myGroup = new FormGroup({\n      person: new FormGroup({ firstName: new FormControl() })\n  });`;\nconst formArrayNameExample = `\n  <div [formGroup]=\"myGroup\">\n    <div formArrayName=\"cities\">\n      <div *ngFor=\"let city of cityArray.controls; index as i\">\n        <input [formControlName]=\"i\">\n      </div>\n    </div>\n  </div>\n\n  In your class:\n\n  this.cityArray = new FormArray([new FormControl('SF')]);\n  this.myGroup = new FormGroup({\n    cities: this.cityArray\n  });`;\nconst ngModelGroupExample = `\n  <form>\n      <div ngModelGroup=\"person\">\n        <input [(ngModel)]=\"person.name\" name=\"firstName\">\n      </div>\n  </form>`;\nconst ngModelWithFormGroupExample = `\n  <div [formGroup]=\"myGroup\">\n      <input formControlName=\"firstName\">\n      <input [(ngModel)]=\"showMoreControls\" [ngModelOptions]=\"{standalone: true}\">\n  </div>\n`;\n\nfunction controlParentException() {\n    return new ɵRuntimeError(1050 /* RuntimeErrorCode.FORM_CONTROL_NAME_MISSING_PARENT */, `formControlName must be used with a parent formGroup directive.  You'll want to add a formGroup\n      directive and pass it an existing FormGroup instance (you can create one in your class).\n\n    Example:\n\n    ${formControlNameExample}`);\n}\nfunction ngModelGroupException() {\n    return new ɵRuntimeError(1051 /* RuntimeErrorCode.FORM_CONTROL_NAME_INSIDE_MODEL_GROUP */, `formControlName cannot be used with an ngModelGroup parent. It is only compatible with parents\n      that also have a \"form\" prefix: formGroupName, formArrayName, or formGroup.\n\n      Option 1:  Update the parent to be formGroupName (reactive form strategy)\n\n      ${formGroupNameExample}\n\n      Option 2: Use ngModel instead of formControlName (template-driven strategy)\n\n      ${ngModelGroupExample}`);\n}\nfunction missingFormException() {\n    return new ɵRuntimeError(1052 /* RuntimeErrorCode.FORM_GROUP_MISSING_INSTANCE */, `formGroup expects a FormGroup instance. Please pass one in.\n\n      Example:\n\n      ${formControlNameExample}`);\n}\nfunction groupParentException() {\n    return new ɵRuntimeError(1053 /* RuntimeErrorCode.FORM_GROUP_NAME_MISSING_PARENT */, `formGroupName must be used with a parent formGroup directive.  You'll want to add a formGroup\n    directive and pass it an existing FormGroup instance (you can create one in your class).\n\n    Example:\n\n    ${formGroupNameExample}`);\n}\nfunction arrayParentException() {\n    return new ɵRuntimeError(1054 /* RuntimeErrorCode.FORM_ARRAY_NAME_MISSING_PARENT */, `formArrayName must be used with a parent formGroup directive.  You'll want to add a formGroup\n      directive and pass it an existing FormGroup instance (you can create one in your class).\n\n      Example:\n\n      ${formArrayNameExample}`);\n}\nconst disabledAttrWarning = `\n  It looks like you're using the disabled attribute with a reactive form directive. If you set disabled to true\n  when you set up this control in your component class, the disabled attribute will actually be set in the DOM for\n  you. We recommend using this approach to avoid 'changed after checked' errors.\n\n  Example:\n  // Specify the \\`disabled\\` property at control creation time:\n  form = new FormGroup({\n    first: new FormControl({value: 'Nancy', disabled: true}, Validators.required),\n    last: new FormControl('Drew', Validators.required)\n  });\n\n  // Controls can also be enabled/disabled after creation:\n  form.get('first')?.enable();\n  form.get('last')?.disable();\n`;\nconst asyncValidatorsDroppedWithOptsWarning = `\n  It looks like you're constructing using a FormControl with both an options argument and an\n  async validators argument. Mixing these arguments will cause your async validators to be dropped.\n  You should either put all your validators in the options object, or in separate validators\n  arguments. For example:\n\n  // Using validators arguments\n  fc = new FormControl(42, Validators.required, myAsyncValidator);\n\n  // Using AbstractControlOptions\n  fc = new FormControl(42, {validators: Validators.required, asyncValidators: myAV});\n\n  // Do NOT mix them: async validators will be dropped!\n  fc = new FormControl(42, {validators: Validators.required}, /* Oops! */ myAsyncValidator);\n`;\nfunction ngModelWarning(directiveName) {\n    return `\n  It looks like you're using ngModel on the same form field as ${directiveName}.\n  Support for using the ngModel input property and ngModelChange event with\n  reactive form directives has been deprecated in Angular v6 and will be removed\n  in a future version of Angular.\n\n  For more information on this, see our API docs here:\n  https://angular.io/api/forms/${directiveName === 'formControl' ? 'FormControlDirective' : 'FormControlName'}#use-with-ngmodel\n  `;\n}\nfunction describeKey(isFormGroup, key) {\n    return isFormGroup ? `with name: '${key}'` : `at index: ${key}`;\n}\nfunction noControlsError(isFormGroup) {\n    return `\n    There are no form controls registered with this ${isFormGroup ? 'group' : 'array'} yet. If you're using ngModel,\n    you may want to check next tick (e.g. use setTimeout).\n  `;\n}\nfunction missingControlError(isFormGroup, key) {\n    return `Cannot find form control ${describeKey(isFormGroup, key)}`;\n}\nfunction missingControlValueError(isFormGroup, key) {\n    return `Must supply a value for form control ${describeKey(isFormGroup, key)}`;\n}\n\nconst NG_DEV_MODE = typeof ngDevMode === 'undefined' || !!ngDevMode;\n/**\n * Reports that a control is valid, meaning that no errors exist in the input value.\n *\n * @see `status`\n */\nconst VALID = 'VALID';\n/**\n * Reports that a control is invalid, meaning that an error exists in the input value.\n *\n * @see `status`\n */\nconst INVALID = 'INVALID';\n/**\n * Reports that a control is pending, meaning that that async validation is occurring and\n * errors are not yet available for the input value.\n *\n * @see `markAsPending`\n * @see `status`\n */\nconst PENDING = 'PENDING';\n/**\n * Reports that a control is disabled, meaning that the control is exempt from ancestor\n * calculations of validity or value.\n *\n * @see `markAsDisabled`\n * @see `status`\n */\nconst DISABLED = 'DISABLED';\n/**\n * Gets validators from either an options object or given validators.\n */\nfunction pickValidators(validatorOrOpts) {\n    return (isOptionsObj(validatorOrOpts) ? validatorOrOpts.validators : validatorOrOpts) || null;\n}\n/**\n * Creates validator function by combining provided validators.\n */\nfunction coerceToValidator(validator) {\n    return Array.isArray(validator) ? composeValidators(validator) : validator || null;\n}\n/**\n * Gets async validators from either an options object or given validators.\n */\nfunction pickAsyncValidators(asyncValidator, validatorOrOpts) {\n    if (typeof ngDevMode === 'undefined' || ngDevMode) {\n        if (isOptionsObj(validatorOrOpts) && asyncValidator) {\n            console.warn(asyncValidatorsDroppedWithOptsWarning);\n        }\n    }\n    return (isOptionsObj(validatorOrOpts) ? validatorOrOpts.asyncValidators : asyncValidator) || null;\n}\n/**\n * Creates async validator function by combining provided async validators.\n */\nfunction coerceToAsyncValidator(asyncValidator) {\n    return Array.isArray(asyncValidator) ? composeAsyncValidators(asyncValidator) :\n        asyncValidator || null;\n}\nfunction isOptionsObj(validatorOrOpts) {\n    return validatorOrOpts != null && !Array.isArray(validatorOrOpts) &&\n        typeof validatorOrOpts === 'object';\n}\nfunction assertControlPresent(parent, isGroup, key) {\n    const controls = parent.controls;\n    const collection = isGroup ? Object.keys(controls) : controls;\n    if (!collection.length) {\n        throw new ɵRuntimeError(1000 /* RuntimeErrorCode.NO_CONTROLS */, NG_DEV_MODE ? noControlsError(isGroup) : '');\n    }\n    if (!controls[key]) {\n        throw new ɵRuntimeError(1001 /* RuntimeErrorCode.MISSING_CONTROL */, NG_DEV_MODE ? missingControlError(isGroup, key) : '');\n    }\n}\nfunction assertAllValuesPresent(control, isGroup, value) {\n    control._forEachChild((_, key) => {\n        if (value[key] === undefined) {\n            throw new ɵRuntimeError(1002 /* RuntimeErrorCode.MISSING_CONTROL_VALUE */, NG_DEV_MODE ? missingControlValueError(isGroup, key) : '');\n        }\n    });\n}\n// clang-format on\n/**\n * This is the base class for `FormControl`, `FormGroup`, and `FormArray`.\n *\n * It provides some of the shared behavior that all controls and groups of controls have, like\n * running validators, calculating status, and resetting state. It also defines the properties\n * that are shared between all sub-classes, like `value`, `valid`, and `dirty`. It shouldn't be\n * instantiated directly.\n *\n * The first type parameter TValue represents the value type of the control (`control.value`).\n * The optional type parameter TRawValue  represents the raw value type (`control.getRawValue()`).\n *\n * @see [Forms Guide](/guide/forms)\n * @see [Reactive Forms Guide](/guide/reactive-forms)\n * @see [Dynamic Forms Guide](/guide/dynamic-form)\n *\n * @publicApi\n */\nclass AbstractControl {\n    /**\n     * Initialize the AbstractControl instance.\n     *\n     * @param validators The function or array of functions that is used to determine the validity of\n     *     this control synchronously.\n     * @param asyncValidators The function or array of functions that is used to determine validity of\n     *     this control asynchronously.\n     */\n    constructor(validators, asyncValidators) {\n        /** @internal */\n        this._pendingDirty = false;\n        /**\n         * Indicates that a control has its own pending asynchronous validation in progress.\n         *\n         * @internal\n         */\n        this._hasOwnPendingAsyncValidator = false;\n        /** @internal */\n        this._pendingTouched = false;\n        /** @internal */\n        this._onCollectionChange = () => { };\n        this._parent = null;\n        /**\n         * A control is `pristine` if the user has not yet changed\n         * the value in the UI.\n         *\n         * @returns True if the user has not yet changed the value in the UI; compare `dirty`.\n         * Programmatic changes to a control's value do not mark it dirty.\n         */\n        this.pristine = true;\n        /**\n         * True if the control is marked as `touched`.\n         *\n         * A control is marked `touched` once the user has triggered\n         * a `blur` event on it.\n         */\n        this.touched = false;\n        /** @internal */\n        this._onDisabledChange = [];\n        this._assignValidators(validators);\n        this._assignAsyncValidators(asyncValidators);\n    }\n    /**\n     * Returns the function that is used to determine the validity of this control synchronously.\n     * If multiple validators have been added, this will be a single composed function.\n     * See `Validators.compose()` for additional information.\n     */\n    get validator() {\n        return this._composedValidatorFn;\n    }\n    set validator(validatorFn) {\n        this._rawValidators = this._composedValidatorFn = validatorFn;\n    }\n    /**\n     * Returns the function that is used to determine the validity of this control asynchronously.\n     * If multiple validators have been added, this will be a single composed function.\n     * See `Validators.compose()` for additional information.\n     */\n    get asyncValidator() {\n        return this._composedAsyncValidatorFn;\n    }\n    set asyncValidator(asyncValidatorFn) {\n        this._rawAsyncValidators = this._composedAsyncValidatorFn = asyncValidatorFn;\n    }\n    /**\n     * The parent control.\n     */\n    get parent() {\n        return this._parent;\n    }\n    /**\n     * A control is `valid` when its `status` is `VALID`.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     * @returns True if the control has passed all of its validation tests,\n     * false otherwise.\n     */\n    get valid() {\n        return this.status === VALID;\n    }\n    /**\n     * A control is `invalid` when its `status` is `INVALID`.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     * @returns True if this control has failed one or more of its validation checks,\n     * false otherwise.\n     */\n    get invalid() {\n        return this.status === INVALID;\n    }\n    /**\n     * A control is `pending` when its `status` is `PENDING`.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     * @returns True if this control is in the process of conducting a validation check,\n     * false otherwise.\n     */\n    get pending() {\n        return this.status == PENDING;\n    }\n    /**\n     * A control is `disabled` when its `status` is `DISABLED`.\n     *\n     * Disabled controls are exempt from validation checks and\n     * are not included in the aggregate value of their ancestor\n     * controls.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     * @returns True if the control is disabled, false otherwise.\n     */\n    get disabled() {\n        return this.status === DISABLED;\n    }\n    /**\n     * A control is `enabled` as long as its `status` is not `DISABLED`.\n     *\n     * @returns True if the control has any status other than 'DISABLED',\n     * false if the status is 'DISABLED'.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     */\n    get enabled() {\n        return this.status !== DISABLED;\n    }\n    /**\n     * A control is `dirty` if the user has changed the value\n     * in the UI.\n     *\n     * @returns True if the user has changed the value of this control in the UI; compare `pristine`.\n     * Programmatic changes to a control's value do not mark it dirty.\n     */\n    get dirty() {\n        return !this.pristine;\n    }\n    /**\n     * True if the control has not been marked as touched\n     *\n     * A control is `untouched` if the user has not yet triggered\n     * a `blur` event on it.\n     */\n    get untouched() {\n        return !this.touched;\n    }\n    /**\n     * Reports the update strategy of the `AbstractControl` (meaning\n     * the event on which the control updates itself).\n     * Possible values: `'change'` | `'blur'` | `'submit'`\n     * Default value: `'change'`\n     */\n    get updateOn() {\n        return this._updateOn ? this._updateOn : (this.parent ? this.parent.updateOn : 'change');\n    }\n    /**\n     * Sets the synchronous validators that are active on this control.  Calling\n     * this overwrites any existing synchronous validators.\n     *\n     * When you add or remove a validator at run time, you must call\n     * `updateValueAndValidity()` for the new validation to take effect.\n     *\n     * If you want to add a new validator without affecting existing ones, consider\n     * using `addValidators()` method instead.\n     */\n    setValidators(validators) {\n        this._assignValidators(validators);\n    }\n    /**\n     * Sets the asynchronous validators that are active on this control. Calling this\n     * overwrites any existing asynchronous validators.\n     *\n     * When you add or remove a validator at run time, you must call\n     * `updateValueAndValidity()` for the new validation to take effect.\n     *\n     * If you want to add a new validator without affecting existing ones, consider\n     * using `addAsyncValidators()` method instead.\n     */\n    setAsyncValidators(validators) {\n        this._assignAsyncValidators(validators);\n    }\n    /**\n     * Add a synchronous validator or validators to this control, without affecting other validators.\n     *\n     * When you add or remove a validator at run time, you must call\n     * `updateValueAndValidity()` for the new validation to take effect.\n     *\n     * Adding a validator that already exists will have no effect. If duplicate validator functions\n     * are present in the `validators` array, only the first instance would be added to a form\n     * control.\n     *\n     * @param validators The new validator function or functions to add to this control.\n     */\n    addValidators(validators) {\n        this.setValidators(addValidators(validators, this._rawValidators));\n    }\n    /**\n     * Add an asynchronous validator or validators to this control, without affecting other\n     * validators.\n     *\n     * When you add or remove a validator at run time, you must call\n     * `updateValueAndValidity()` for the new validation to take effect.\n     *\n     * Adding a validator that already exists will have no effect.\n     *\n     * @param validators The new asynchronous validator function or functions to add to this control.\n     */\n    addAsyncValidators(validators) {\n        this.setAsyncValidators(addValidators(validators, this._rawAsyncValidators));\n    }\n    /**\n     * Remove a synchronous validator from this control, without affecting other validators.\n     * Validators are compared by function reference; you must pass a reference to the exact same\n     * validator function as the one that was originally set. If a provided validator is not found,\n     * it is ignored.\n     *\n     * @usageNotes\n     *\n     * ### Reference to a ValidatorFn\n     *\n     * ```\n     * // Reference to the RequiredValidator\n     * const ctrl = new FormControl<string | null>('', Validators.required);\n     * ctrl.removeValidators(Validators.required);\n     *\n     * // Reference to anonymous function inside MinValidator\n     * const minValidator = Validators.min(3);\n     * const ctrl = new FormControl<string | null>('', minValidator);\n     * expect(ctrl.hasValidator(minValidator)).toEqual(true)\n     * expect(ctrl.hasValidator(Validators.min(3))).toEqual(false)\n     *\n     * ctrl.removeValidators(minValidator);\n     * ```\n     *\n     * When you add or remove a validator at run time, you must call\n     * `updateValueAndValidity()` for the new validation to take effect.\n     *\n     * @param validators The validator or validators to remove.\n     */\n    removeValidators(validators) {\n        this.setValidators(removeValidators(validators, this._rawValidators));\n    }\n    /**\n     * Remove an asynchronous validator from this control, without affecting other validators.\n     * Validators are compared by function reference; you must pass a reference to the exact same\n     * validator function as the one that was originally set. If a provided validator is not found, it\n     * is ignored.\n     *\n     * When you add or remove a validator at run time, you must call\n     * `updateValueAndValidity()` for the new validation to take effect.\n     *\n     * @param validators The asynchronous validator or validators to remove.\n     */\n    removeAsyncValidators(validators) {\n        this.setAsyncValidators(removeValidators(validators, this._rawAsyncValidators));\n    }\n    /**\n     * Check whether a synchronous validator function is present on this control. The provided\n     * validator must be a reference to the exact same function that was provided.\n     *\n     * @usageNotes\n     *\n     * ### Reference to a ValidatorFn\n     *\n     * ```\n     * // Reference to the RequiredValidator\n     * const ctrl = new FormControl<number | null>(0, Validators.required);\n     * expect(ctrl.hasValidator(Validators.required)).toEqual(true)\n     *\n     * // Reference to anonymous function inside MinValidator\n     * const minValidator = Validators.min(3);\n     * const ctrl = new FormControl<number | null>(0, minValidator);\n     * expect(ctrl.hasValidator(minValidator)).toEqual(true)\n     * expect(ctrl.hasValidator(Validators.min(3))).toEqual(false)\n     * ```\n     *\n     * @param validator The validator to check for presence. Compared by function reference.\n     * @returns Whether the provided validator was found on this control.\n     */\n    hasValidator(validator) {\n        return hasValidator(this._rawValidators, validator);\n    }\n    /**\n     * Check whether an asynchronous validator function is present on this control. The provided\n     * validator must be a reference to the exact same function that was provided.\n     *\n     * @param validator The asynchronous validator to check for presence. Compared by function\n     *     reference.\n     * @returns Whether the provided asynchronous validator was found on this control.\n     */\n    hasAsyncValidator(validator) {\n        return hasValidator(this._rawAsyncValidators, validator);\n    }\n    /**\n     * Empties out the synchronous validator list.\n     *\n     * When you add or remove a validator at run time, you must call\n     * `updateValueAndValidity()` for the new validation to take effect.\n     *\n     */\n    clearValidators() {\n        this.validator = null;\n    }\n    /**\n     * Empties out the async validator list.\n     *\n     * When you add or remove a validator at run time, you must call\n     * `updateValueAndValidity()` for the new validation to take effect.\n     *\n     */\n    clearAsyncValidators() {\n        this.asyncValidator = null;\n    }\n    /**\n     * Marks the control as `touched`. A control is touched by focus and\n     * blur events that do not change the value.\n     *\n     * @see `markAsUntouched()`\n     * @see `markAsDirty()`\n     * @see `markAsPristine()`\n     *\n     * @param opts Configuration options that determine how the control propagates changes\n     * and emits events after marking is applied.\n     * * `onlySelf`: When true, mark only this control. When false or not supplied,\n     * marks all direct ancestors. Default is false.\n     */\n    markAsTouched(opts = {}) {\n        this.touched = true;\n        if (this._parent && !opts.onlySelf) {\n            this._parent.markAsTouched(opts);\n        }\n    }\n    /**\n     * Marks the control and all its descendant controls as `touched`.\n     * @see `markAsTouched()`\n     */\n    markAllAsTouched() {\n        this.markAsTouched({ onlySelf: true });\n        this._forEachChild((control) => control.markAllAsTouched());\n    }\n    /**\n     * Marks the control as `untouched`.\n     *\n     * If the control has any children, also marks all children as `untouched`\n     * and recalculates the `touched` status of all parent controls.\n     *\n     * @see `markAsTouched()`\n     * @see `markAsDirty()`\n     * @see `markAsPristine()`\n     *\n     * @param opts Configuration options that determine how the control propagates changes\n     * and emits events after the marking is applied.\n     * * `onlySelf`: When true, mark only this control. When false or not supplied,\n     * marks all direct ancestors. Default is false.\n     */\n    markAsUntouched(opts = {}) {\n        this.touched = false;\n        this._pendingTouched = false;\n        this._forEachChild((control) => {\n            control.markAsUntouched({ onlySelf: true });\n        });\n        if (this._parent && !opts.onlySelf) {\n            this._parent._updateTouched(opts);\n        }\n    }\n    /**\n     * Marks the control as `dirty`. A control becomes dirty when\n     * the control's value is changed through the UI; compare `markAsTouched`.\n     *\n     * @see `markAsTouched()`\n     * @see `markAsUntouched()`\n     * @see `markAsPristine()`\n     *\n     * @param opts Configuration options that determine how the control propagates changes\n     * and emits events after marking is applied.\n     * * `onlySelf`: When true, mark only this control. When false or not supplied,\n     * marks all direct ancestors. Default is false.\n     */\n    markAsDirty(opts = {}) {\n        this.pristine = false;\n        if (this._parent && !opts.onlySelf) {\n            this._parent.markAsDirty(opts);\n        }\n    }\n    /**\n     * Marks the control as `pristine`.\n     *\n     * If the control has any children, marks all children as `pristine`,\n     * and recalculates the `pristine` status of all parent\n     * controls.\n     *\n     * @see `markAsTouched()`\n     * @see `markAsUntouched()`\n     * @see `markAsDirty()`\n     *\n     * @param opts Configuration options that determine how the control emits events after\n     * marking is applied.\n     * * `onlySelf`: When true, mark only this control. When false or not supplied,\n     * marks all direct ancestors. Default is false.\n     */\n    markAsPristine(opts = {}) {\n        this.pristine = true;\n        this._pendingDirty = false;\n        this._forEachChild((control) => {\n            control.markAsPristine({ onlySelf: true });\n        });\n        if (this._parent && !opts.onlySelf) {\n            this._parent._updatePristine(opts);\n        }\n    }\n    /**\n     * Marks the control as `pending`.\n     *\n     * A control is pending while the control performs async validation.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     * @param opts Configuration options that determine how the control propagates changes and\n     * emits events after marking is applied.\n     * * `onlySelf`: When true, mark only this control. When false or not supplied,\n     * marks all direct ancestors. Default is false.\n     * * `emitEvent`: When true or not supplied (the default), the `statusChanges`\n     * observable emits an event with the latest status the control is marked pending.\n     * When false, no events are emitted.\n     *\n     */\n    markAsPending(opts = {}) {\n        this.status = PENDING;\n        if (opts.emitEvent !== false) {\n            this.statusChanges.emit(this.status);\n        }\n        if (this._parent && !opts.onlySelf) {\n            this._parent.markAsPending(opts);\n        }\n    }\n    /**\n     * Disables the control. This means the control is exempt from validation checks and\n     * excluded from the aggregate value of any parent. Its status is `DISABLED`.\n     *\n     * If the control has children, all children are also disabled.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     * @param opts Configuration options that determine how the control propagates\n     * changes and emits events after the control is disabled.\n     * * `onlySelf`: When true, mark only this control. When false or not supplied,\n     * marks all direct ancestors. Default is false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control is disabled.\n     * When false, no events are emitted.\n     */\n    disable(opts = {}) {\n        // If parent has been marked artificially dirty we don't want to re-calculate the\n        // parent's dirtiness based on the children.\n        const skipPristineCheck = this._parentMarkedDirty(opts.onlySelf);\n        this.status = DISABLED;\n        this.errors = null;\n        this._forEachChild((control) => {\n            control.disable({ ...opts, onlySelf: true });\n        });\n        this._updateValue();\n        if (opts.emitEvent !== false) {\n            this.valueChanges.emit(this.value);\n            this.statusChanges.emit(this.status);\n        }\n        this._updateAncestors({ ...opts, skipPristineCheck });\n        this._onDisabledChange.forEach((changeFn) => changeFn(true));\n    }\n    /**\n     * Enables the control. This means the control is included in validation checks and\n     * the aggregate value of its parent. Its status recalculates based on its value and\n     * its validators.\n     *\n     * By default, if the control has children, all children are enabled.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     * @param opts Configure options that control how the control propagates changes and\n     * emits events when marked as untouched\n     * * `onlySelf`: When true, mark only this control. When false or not supplied,\n     * marks all direct ancestors. Default is false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control is enabled.\n     * When false, no events are emitted.\n     */\n    enable(opts = {}) {\n        // If parent has been marked artificially dirty we don't want to re-calculate the\n        // parent's dirtiness based on the children.\n        const skipPristineCheck = this._parentMarkedDirty(opts.onlySelf);\n        this.status = VALID;\n        this._forEachChild((control) => {\n            control.enable({ ...opts, onlySelf: true });\n        });\n        this.updateValueAndValidity({ onlySelf: true, emitEvent: opts.emitEvent });\n        this._updateAncestors({ ...opts, skipPristineCheck });\n        this._onDisabledChange.forEach((changeFn) => changeFn(false));\n    }\n    _updateAncestors(opts) {\n        if (this._parent && !opts.onlySelf) {\n            this._parent.updateValueAndValidity(opts);\n            if (!opts.skipPristineCheck) {\n                this._parent._updatePristine();\n            }\n            this._parent._updateTouched();\n        }\n    }\n    /**\n     * Sets the parent of the control\n     *\n     * @param parent The new parent.\n     */\n    setParent(parent) {\n        this._parent = parent;\n    }\n    /**\n     * The raw value of this control. For most control implementations, the raw value will include\n     * disabled children.\n     */\n    getRawValue() {\n        return this.value;\n    }\n    /**\n     * Recalculates the value and validation status of the control.\n     *\n     * By default, it also updates the value and validity of its ancestors.\n     *\n     * @param opts Configuration options determine how the control propagates changes and emits events\n     * after updates and validity checks are applied.\n     * * `onlySelf`: When true, only update this control. When false or not supplied,\n     * update all direct ancestors. Default is false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control is updated.\n     * When false, no events are emitted.\n     */\n    updateValueAndValidity(opts = {}) {\n        this._setInitialStatus();\n        this._updateValue();\n        if (this.enabled) {\n            this._cancelExistingSubscription();\n            this.errors = this._runValidator();\n            this.status = this._calculateStatus();\n            if (this.status === VALID || this.status === PENDING) {\n                this._runAsyncValidator(opts.emitEvent);\n            }\n        }\n        if (opts.emitEvent !== false) {\n            this.valueChanges.emit(this.value);\n            this.statusChanges.emit(this.status);\n        }\n        if (this._parent && !opts.onlySelf) {\n            this._parent.updateValueAndValidity(opts);\n        }\n    }\n    /** @internal */\n    _updateTreeValidity(opts = { emitEvent: true }) {\n        this._forEachChild((ctrl) => ctrl._updateTreeValidity(opts));\n        this.updateValueAndValidity({ onlySelf: true, emitEvent: opts.emitEvent });\n    }\n    _setInitialStatus() {\n        this.status = this._allControlsDisabled() ? DISABLED : VALID;\n    }\n    _runValidator() {\n        return this.validator ? this.validator(this) : null;\n    }\n    _runAsyncValidator(emitEvent) {\n        if (this.asyncValidator) {\n            this.status = PENDING;\n            this._hasOwnPendingAsyncValidator = true;\n            const obs = toObservable(this.asyncValidator(this));\n            this._asyncValidationSubscription = obs.subscribe((errors) => {\n                this._hasOwnPendingAsyncValidator = false;\n                // This will trigger the recalculation of the validation status, which depends on\n                // the state of the asynchronous validation (whether it is in progress or not). So, it is\n                // necessary that we have updated the `_hasOwnPendingAsyncValidator` boolean flag first.\n                this.setErrors(errors, { emitEvent });\n            });\n        }\n    }\n    _cancelExistingSubscription() {\n        if (this._asyncValidationSubscription) {\n            this._asyncValidationSubscription.unsubscribe();\n            this._hasOwnPendingAsyncValidator = false;\n        }\n    }\n    /**\n     * Sets errors on a form control when running validations manually, rather than automatically.\n     *\n     * Calling `setErrors` also updates the validity of the parent control.\n     *\n     * @param opts Configuration options that determine how the control propagates\n     * changes and emits events after the control errors are set.\n     * * `emitEvent`: When true or not supplied (the default), the `statusChanges`\n     * observable emits an event after the errors are set.\n     *\n     * @usageNotes\n     *\n     * ### Manually set the errors for a control\n     *\n     * ```\n     * const login = new FormControl('someLogin');\n     * login.setErrors({\n     *   notUnique: true\n     * });\n     *\n     * expect(login.valid).toEqual(false);\n     * expect(login.errors).toEqual({ notUnique: true });\n     *\n     * login.setValue('someOtherLogin');\n     *\n     * expect(login.valid).toEqual(true);\n     * ```\n     */\n    setErrors(errors, opts = {}) {\n        this.errors = errors;\n        this._updateControlsErrors(opts.emitEvent !== false);\n    }\n    /**\n     * Retrieves a child control given the control's name or path.\n     *\n     * @param path A dot-delimited string or array of string/number values that define the path to the\n     * control. If a string is provided, passing it as a string literal will result in improved type\n     * information. Likewise, if an array is provided, passing it `as const` will cause improved type\n     * information to be available.\n     *\n     * @usageNotes\n     * ### Retrieve a nested control\n     *\n     * For example, to get a `name` control nested within a `person` sub-group:\n     *\n     * * `this.form.get('person.name');`\n     *\n     * -OR-\n     *\n     * * `this.form.get(['person', 'name'] as const);` // `as const` gives improved typings\n     *\n     * ### Retrieve a control in a FormArray\n     *\n     * When accessing an element inside a FormArray, you can use an element index.\n     * For example, to get a `price` control from the first element in an `items` array you can use:\n     *\n     * * `this.form.get('items.0.price');`\n     *\n     * -OR-\n     *\n     * * `this.form.get(['items', 0, 'price']);`\n     */\n    get(path) {\n        let currPath = path;\n        if (currPath == null)\n            return null;\n        if (!Array.isArray(currPath))\n            currPath = currPath.split('.');\n        if (currPath.length === 0)\n            return null;\n        return currPath.reduce((control, name) => control && control._find(name), this);\n    }\n    /**\n     * @description\n     * Reports error data for the control with the given path.\n     *\n     * @param errorCode The code of the error to check\n     * @param path A list of control names that designates how to move from the current control\n     * to the control that should be queried for errors.\n     *\n     * @usageNotes\n     * For example, for the following `FormGroup`:\n     *\n     * ```\n     * form = new FormGroup({\n     *   address: new FormGroup({ street: new FormControl() })\n     * });\n     * ```\n     *\n     * The path to the 'street' control from the root form would be 'address' -> 'street'.\n     *\n     * It can be provided to this method in one of two formats:\n     *\n     * 1. An array of string control names, e.g. `['address', 'street']`\n     * 1. A period-delimited list of control names in one string, e.g. `'address.street'`\n     *\n     * @returns error data for that particular error. If the control or error is not present,\n     * null is returned.\n     */\n    getError(errorCode, path) {\n        const control = path ? this.get(path) : this;\n        return control && control.errors ? control.errors[errorCode] : null;\n    }\n    /**\n     * @description\n     * Reports whether the control with the given path has the error specified.\n     *\n     * @param errorCode The code of the error to check\n     * @param path A list of control names that designates how to move from the current control\n     * to the control that should be queried for errors.\n     *\n     * @usageNotes\n     * For example, for the following `FormGroup`:\n     *\n     * ```\n     * form = new FormGroup({\n     *   address: new FormGroup({ street: new FormControl() })\n     * });\n     * ```\n     *\n     * The path to the 'street' control from the root form would be 'address' -> 'street'.\n     *\n     * It can be provided to this method in one of two formats:\n     *\n     * 1. An array of string control names, e.g. `['address', 'street']`\n     * 1. A period-delimited list of control names in one string, e.g. `'address.street'`\n     *\n     * If no path is given, this method checks for the error on the current control.\n     *\n     * @returns whether the given error is present in the control at the given path.\n     *\n     * If the control is not present, false is returned.\n     */\n    hasError(errorCode, path) {\n        return !!this.getError(errorCode, path);\n    }\n    /**\n     * Retrieves the top-level ancestor of this control.\n     */\n    get root() {\n        let x = this;\n        while (x._parent) {\n            x = x._parent;\n        }\n        return x;\n    }\n    /** @internal */\n    _updateControlsErrors(emitEvent) {\n        this.status = this._calculateStatus();\n        if (emitEvent) {\n            this.statusChanges.emit(this.status);\n        }\n        if (this._parent) {\n            this._parent._updateControlsErrors(emitEvent);\n        }\n    }\n    /** @internal */\n    _initObservables() {\n        this.valueChanges = new EventEmitter();\n        this.statusChanges = new EventEmitter();\n    }\n    _calculateStatus() {\n        if (this._allControlsDisabled())\n            return DISABLED;\n        if (this.errors)\n            return INVALID;\n        if (this._hasOwnPendingAsyncValidator || this._anyControlsHaveStatus(PENDING))\n            return PENDING;\n        if (this._anyControlsHaveStatus(INVALID))\n            return INVALID;\n        return VALID;\n    }\n    /** @internal */\n    _anyControlsHaveStatus(status) {\n        return this._anyControls((control) => control.status === status);\n    }\n    /** @internal */\n    _anyControlsDirty() {\n        return this._anyControls((control) => control.dirty);\n    }\n    /** @internal */\n    _anyControlsTouched() {\n        return this._anyControls((control) => control.touched);\n    }\n    /** @internal */\n    _updatePristine(opts = {}) {\n        this.pristine = !this._anyControlsDirty();\n        if (this._parent && !opts.onlySelf) {\n            this._parent._updatePristine(opts);\n        }\n    }\n    /** @internal */\n    _updateTouched(opts = {}) {\n        this.touched = this._anyControlsTouched();\n        if (this._parent && !opts.onlySelf) {\n            this._parent._updateTouched(opts);\n        }\n    }\n    /** @internal */\n    _registerOnCollectionChange(fn) {\n        this._onCollectionChange = fn;\n    }\n    /** @internal */\n    _setUpdateStrategy(opts) {\n        if (isOptionsObj(opts) && opts.updateOn != null) {\n            this._updateOn = opts.updateOn;\n        }\n    }\n    /**\n     * Check to see if parent has been marked artificially dirty.\n     *\n     * @internal\n     */\n    _parentMarkedDirty(onlySelf) {\n        const parentDirty = this._parent && this._parent.dirty;\n        return !onlySelf && !!parentDirty && !this._parent._anyControlsDirty();\n    }\n    /** @internal */\n    _find(name) {\n        return null;\n    }\n    /**\n     * Internal implementation of the `setValidators` method. Needs to be separated out into a\n     * different method, because it is called in the constructor and it can break cases where\n     * a control is extended.\n     */\n    _assignValidators(validators) {\n        this._rawValidators = Array.isArray(validators) ? validators.slice() : validators;\n        this._composedValidatorFn = coerceToValidator(this._rawValidators);\n    }\n    /**\n     * Internal implementation of the `setAsyncValidators` method. Needs to be separated out into a\n     * different method, because it is called in the constructor and it can break cases where\n     * a control is extended.\n     */\n    _assignAsyncValidators(validators) {\n        this._rawAsyncValidators = Array.isArray(validators) ? validators.slice() : validators;\n        this._composedAsyncValidatorFn = coerceToAsyncValidator(this._rawAsyncValidators);\n    }\n}\n\n/**\n * Tracks the value and validity state of a group of `FormControl` instances.\n *\n * A `FormGroup` aggregates the values of each child `FormControl` into one object,\n * with each control name as the key.  It calculates its status by reducing the status values\n * of its children. For example, if one of the controls in a group is invalid, the entire\n * group becomes invalid.\n *\n * `FormGroup` is one of the four fundamental building blocks used to define forms in Angular,\n * along with `FormControl`, `FormArray`, and `FormRecord`.\n *\n * When instantiating a `FormGroup`, pass in a collection of child controls as the first\n * argument. The key for each child registers the name for the control.\n *\n * `FormGroup` is intended for use cases where the keys are known ahead of time.\n * If you need to dynamically add and remove controls, use {@link FormRecord} instead.\n *\n * `FormGroup` accepts an optional type parameter `TControl`, which is an object type with inner\n * control types as values.\n *\n * @usageNotes\n *\n * ### Create a form group with 2 controls\n *\n * ```\n * const form = new FormGroup({\n *   first: new FormControl('Nancy', Validators.minLength(2)),\n *   last: new FormControl('Drew'),\n * });\n *\n * console.log(form.value);   // {first: 'Nancy', last; 'Drew'}\n * console.log(form.status);  // 'VALID'\n * ```\n *\n * ### The type argument, and optional controls\n *\n * `FormGroup` accepts one generic argument, which is an object containing its inner controls.\n * This type will usually be inferred automatically, but you can always specify it explicitly if you\n * wish.\n *\n * If you have controls that are optional (i.e. they can be removed, you can use the `?` in the\n * type):\n *\n * ```\n * const form = new FormGroup<{\n *   first: FormControl<string|null>,\n *   middle?: FormControl<string|null>, // Middle name is optional.\n *   last: FormControl<string|null>,\n * }>({\n *   first: new FormControl('Nancy'),\n *   last: new FormControl('Drew'),\n * });\n * ```\n *\n * ### Create a form group with a group-level validator\n *\n * You include group-level validators as the second arg, or group-level async\n * validators as the third arg. These come in handy when you want to perform validation\n * that considers the value of more than one child control.\n *\n * ```\n * const form = new FormGroup({\n *   password: new FormControl('', Validators.minLength(2)),\n *   passwordConfirm: new FormControl('', Validators.minLength(2)),\n * }, passwordMatchValidator);\n *\n *\n * function passwordMatchValidator(g: FormGroup) {\n *    return g.get('password').value === g.get('passwordConfirm').value\n *       ? null : {'mismatch': true};\n * }\n * ```\n *\n * Like `FormControl` instances, you choose to pass in\n * validators and async validators as part of an options object.\n *\n * ```\n * const form = new FormGroup({\n *   password: new FormControl('')\n *   passwordConfirm: new FormControl('')\n * }, { validators: passwordMatchValidator, asyncValidators: otherValidator });\n * ```\n *\n * ### Set the updateOn property for all controls in a form group\n *\n * The options object is used to set a default value for each child\n * control's `updateOn` property. If you set `updateOn` to `'blur'` at the\n * group level, all child controls default to 'blur', unless the child\n * has explicitly specified a different `updateOn` value.\n *\n * ```ts\n * const c = new FormGroup({\n *   one: new FormControl()\n * }, { updateOn: 'blur' });\n * ```\n *\n * ### Using a FormGroup with optional controls\n *\n * It is possible to have optional controls in a FormGroup. An optional control can be removed later\n * using `removeControl`, and can be omitted when calling `reset`. Optional controls must be\n * declared optional in the group's type.\n *\n * ```ts\n * const c = new FormGroup<{one?: FormControl<string>}>({\n *   one: new FormControl('')\n * });\n * ```\n *\n * Notice that `c.value.one` has type `string|null|undefined`. This is because calling `c.reset({})`\n * without providing the optional key `one` will cause it to become `null`.\n *\n * @publicApi\n */\nclass FormGroup extends AbstractControl {\n    /**\n     * Creates a new `FormGroup` instance.\n     *\n     * @param controls A collection of child controls. The key for each child is the name\n     * under which it is registered.\n     *\n     * @param validatorOrOpts A synchronous validator function, or an array of\n     * such functions, or an `AbstractControlOptions` object that contains validation functions\n     * and a validation trigger.\n     *\n     * @param asyncValidator A single async validator or array of async validator functions\n     *\n     */\n    constructor(controls, validatorOrOpts, asyncValidator) {\n        super(pickValidators(validatorOrOpts), pickAsyncValidators(asyncValidator, validatorOrOpts));\n        this.controls = controls;\n        this._initObservables();\n        this._setUpdateStrategy(validatorOrOpts);\n        this._setUpControls();\n        this.updateValueAndValidity({\n            onlySelf: true,\n            // If `asyncValidator` is present, it will trigger control status change from `PENDING` to\n            // `VALID` or `INVALID`. The status should be broadcasted via the `statusChanges` observable,\n            // so we set `emitEvent` to `true` to allow that during the control creation process.\n            emitEvent: !!this.asyncValidator\n        });\n    }\n    registerControl(name, control) {\n        if (this.controls[name])\n            return this.controls[name];\n        this.controls[name] = control;\n        control.setParent(this);\n        control._registerOnCollectionChange(this._onCollectionChange);\n        return control;\n    }\n    addControl(name, control, options = {}) {\n        this.registerControl(name, control);\n        this.updateValueAndValidity({ emitEvent: options.emitEvent });\n        this._onCollectionChange();\n    }\n    /**\n     * Remove a control from this group. In a strongly-typed group, required controls cannot be\n     * removed.\n     *\n     * This method also updates the value and validity of the control.\n     *\n     * @param name The control name to remove from the collection\n     * @param options Specifies whether this FormGroup instance should emit events after a\n     *     control is removed.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges` observables emit events with the latest status and value when the control is\n     * removed. When false, no events are emitted.\n     */\n    removeControl(name, options = {}) {\n        if (this.controls[name])\n            this.controls[name]._registerOnCollectionChange(() => { });\n        delete (this.controls[name]);\n        this.updateValueAndValidity({ emitEvent: options.emitEvent });\n        this._onCollectionChange();\n    }\n    setControl(name, control, options = {}) {\n        if (this.controls[name])\n            this.controls[name]._registerOnCollectionChange(() => { });\n        delete (this.controls[name]);\n        if (control)\n            this.registerControl(name, control);\n        this.updateValueAndValidity({ emitEvent: options.emitEvent });\n        this._onCollectionChange();\n    }\n    contains(controlName) {\n        return this.controls.hasOwnProperty(controlName) && this.controls[controlName].enabled;\n    }\n    /**\n     * Sets the value of the `FormGroup`. It accepts an object that matches\n     * the structure of the group, with control names as keys.\n     *\n     * @usageNotes\n     * ### Set the complete value for the form group\n     *\n     * ```\n     * const form = new FormGroup({\n     *   first: new FormControl(),\n     *   last: new FormControl()\n     * });\n     *\n     * console.log(form.value);   // {first: null, last: null}\n     *\n     * form.setValue({first: 'Nancy', last: 'Drew'});\n     * console.log(form.value);   // {first: 'Nancy', last: 'Drew'}\n     * ```\n     *\n     * @throws When strict checks fail, such as setting the value of a control\n     * that doesn't exist or if you exclude a value of a control that does exist.\n     *\n     * @param value The new value for the control that matches the structure of the group.\n     * @param options Configuration options that determine how the control propagates changes\n     * and emits events after the value changes.\n     * The configuration options are passed to the {@link AbstractControl#updateValueAndValidity\n     * updateValueAndValidity} method.\n     *\n     * * `onlySelf`: When true, each change only affects this control, and not its parent. Default is\n     * false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control value is updated.\n     * When false, no events are emitted.\n     */\n    setValue(value, options = {}) {\n        assertAllValuesPresent(this, true, value);\n        Object.keys(value).forEach(name => {\n            assertControlPresent(this, true, name);\n            this.controls[name].setValue(value[name], { onlySelf: true, emitEvent: options.emitEvent });\n        });\n        this.updateValueAndValidity(options);\n    }\n    /**\n     * Patches the value of the `FormGroup`. It accepts an object with control\n     * names as keys, and does its best to match the values to the correct controls\n     * in the group.\n     *\n     * It accepts both super-sets and sub-sets of the group without throwing an error.\n     *\n     * @usageNotes\n     * ### Patch the value for a form group\n     *\n     * ```\n     * const form = new FormGroup({\n     *    first: new FormControl(),\n     *    last: new FormControl()\n     * });\n     * console.log(form.value);   // {first: null, last: null}\n     *\n     * form.patchValue({first: 'Nancy'});\n     * console.log(form.value);   // {first: 'Nancy', last: null}\n     * ```\n     *\n     * @param value The object that matches the structure of the group.\n     * @param options Configuration options that determine how the control propagates changes and\n     * emits events after the value is patched.\n     * * `onlySelf`: When true, each change only affects this control and not its parent. Default is\n     * true.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges` observables emit events with the latest status and value when the control value\n     * is updated. When false, no events are emitted. The configuration options are passed to\n     * the {@link AbstractControl#updateValueAndValidity updateValueAndValidity} method.\n     */\n    patchValue(value, options = {}) {\n        // Even though the `value` argument type doesn't allow `null` and `undefined` values, the\n        // `patchValue` can be called recursively and inner data structures might have these values, so\n        // we just ignore such cases when a field containing FormGroup instance receives `null` or\n        // `undefined` as a value.\n        if (value == null /* both `null` and `undefined` */)\n            return;\n        Object.keys(value).forEach(name => {\n            // The compiler cannot see through the uninstantiated conditional type of `this.controls`, so\n            // `as any` is required.\n            const control = this.controls[name];\n            if (control) {\n                control.patchValue(\n                /* Guaranteed to be present, due to the outer forEach. */ value[name], { onlySelf: true, emitEvent: options.emitEvent });\n            }\n        });\n        this.updateValueAndValidity(options);\n    }\n    /**\n     * Resets the `FormGroup`, marks all descendants `pristine` and `untouched` and sets\n     * the value of all descendants to their default values, or null if no defaults were provided.\n     *\n     * You reset to a specific form state by passing in a map of states\n     * that matches the structure of your form, with control names as keys. The state\n     * is a standalone value or a form state object with both a value and a disabled\n     * status.\n     *\n     * @param value Resets the control with an initial value,\n     * or an object that defines the initial value and disabled state.\n     *\n     * @param options Configuration options that determine how the control propagates changes\n     * and emits events when the group is reset.\n     * * `onlySelf`: When true, each change only affects this control, and not its parent. Default is\n     * false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control is reset.\n     * When false, no events are emitted.\n     * The configuration options are passed to the {@link AbstractControl#updateValueAndValidity\n     * updateValueAndValidity} method.\n     *\n     * @usageNotes\n     *\n     * ### Reset the form group values\n     *\n     * ```ts\n     * const form = new FormGroup({\n     *   first: new FormControl('first name'),\n     *   last: new FormControl('last name')\n     * });\n     *\n     * console.log(form.value);  // {first: 'first name', last: 'last name'}\n     *\n     * form.reset({ first: 'name', last: 'last name' });\n     *\n     * console.log(form.value);  // {first: 'name', last: 'last name'}\n     * ```\n     *\n     * ### Reset the form group values and disabled status\n     *\n     * ```\n     * const form = new FormGroup({\n     *   first: new FormControl('first name'),\n     *   last: new FormControl('last name')\n     * });\n     *\n     * form.reset({\n     *   first: {value: 'name', disabled: true},\n     *   last: 'last'\n     * });\n     *\n     * console.log(form.value);  // {last: 'last'}\n     * console.log(form.get('first').status);  // 'DISABLED'\n     * ```\n     */\n    reset(value = {}, options = {}) {\n        this._forEachChild((control, name) => {\n            control.reset(value[name], { onlySelf: true, emitEvent: options.emitEvent });\n        });\n        this._updatePristine(options);\n        this._updateTouched(options);\n        this.updateValueAndValidity(options);\n    }\n    /**\n     * The aggregate value of the `FormGroup`, including any disabled controls.\n     *\n     * Retrieves all values regardless of disabled status.\n     */\n    getRawValue() {\n        return this._reduceChildren({}, (acc, control, name) => {\n            acc[name] = control.getRawValue();\n            return acc;\n        });\n    }\n    /** @internal */\n    _syncPendingControls() {\n        let subtreeUpdated = this._reduceChildren(false, (updated, child) => {\n            return child._syncPendingControls() ? true : updated;\n        });\n        if (subtreeUpdated)\n            this.updateValueAndValidity({ onlySelf: true });\n        return subtreeUpdated;\n    }\n    /** @internal */\n    _forEachChild(cb) {\n        Object.keys(this.controls).forEach(key => {\n            // The list of controls can change (for ex. controls might be removed) while the loop\n            // is running (as a result of invoking Forms API in `valueChanges` subscription), so we\n            // have to null check before invoking the callback.\n            const control = this.controls[key];\n            control && cb(control, key);\n        });\n    }\n    /** @internal */\n    _setUpControls() {\n        this._forEachChild((control) => {\n            control.setParent(this);\n            control._registerOnCollectionChange(this._onCollectionChange);\n        });\n    }\n    /** @internal */\n    _updateValue() {\n        this.value = this._reduceValue();\n    }\n    /** @internal */\n    _anyControls(condition) {\n        for (const [controlName, control] of Object.entries(this.controls)) {\n            if (this.contains(controlName) && condition(control)) {\n                return true;\n            }\n        }\n        return false;\n    }\n    /** @internal */\n    _reduceValue() {\n        let acc = {};\n        return this._reduceChildren(acc, (acc, control, name) => {\n            if (control.enabled || this.disabled) {\n                acc[name] = control.value;\n            }\n            return acc;\n        });\n    }\n    /** @internal */\n    _reduceChildren(initValue, fn) {\n        let res = initValue;\n        this._forEachChild((control, name) => {\n            res = fn(res, control, name);\n        });\n        return res;\n    }\n    /** @internal */\n    _allControlsDisabled() {\n        for (const controlName of Object.keys(this.controls)) {\n            if (this.controls[controlName].enabled) {\n                return false;\n            }\n        }\n        return Object.keys(this.controls).length > 0 || this.disabled;\n    }\n    /** @internal */\n    _find(name) {\n        return this.controls.hasOwnProperty(name) ?\n            this.controls[name] :\n            null;\n    }\n}\nconst UntypedFormGroup = FormGroup;\n/**\n * @description\n * Asserts that the given control is an instance of `FormGroup`\n *\n * @publicApi\n */\nconst isFormGroup = (control) => control instanceof FormGroup;\n/**\n * Tracks the value and validity state of a collection of `FormControl` instances, each of which has\n * the same value type.\n *\n * `FormRecord` is very similar to {@link FormGroup}, except it can be used with a dynamic keys,\n * with controls added and removed as needed.\n *\n * `FormRecord` accepts one generic argument, which describes the type of the controls it contains.\n *\n * @usageNotes\n *\n * ```\n * let numbers = new FormRecord({bill: new FormControl('415-123-456')});\n * numbers.addControl('bob', new FormControl('415-234-567'));\n * numbers.removeControl('bill');\n * ```\n *\n * @publicApi\n */\nclass FormRecord extends FormGroup {\n}\n/**\n * @description\n * Asserts that the given control is an instance of `FormRecord`\n *\n * @publicApi\n */\nconst isFormRecord = (control) => control instanceof FormRecord;\n\n/**\n * Token to provide to allow SetDisabledState to always be called when a CVA is added, regardless of\n * whether the control is disabled or enabled.\n *\n * @see `FormsModule.withConfig`\n */\nconst CALL_SET_DISABLED_STATE = new InjectionToken('CallSetDisabledState', { providedIn: 'root', factory: () => setDisabledStateDefault });\n/**\n * Whether to use the fixed setDisabledState behavior by default.\n */\nconst setDisabledStateDefault = 'always';\nfunction controlPath(name, parent) {\n    return [...parent.path, name];\n}\n/**\n * Links a Form control and a Form directive by setting up callbacks (such as `onChange`) on both\n * instances. This function is typically invoked when form directive is being initialized.\n *\n * @param control Form control instance that should be linked.\n * @param dir Directive that should be linked with a given control.\n */\nfunction setUpControl(control, dir, callSetDisabledState = setDisabledStateDefault) {\n    if (typeof ngDevMode === 'undefined' || ngDevMode) {\n        if (!control)\n            _throwError(dir, 'Cannot find control with');\n        if (!dir.valueAccessor)\n            _throwMissingValueAccessorError(dir);\n    }\n    setUpValidators(control, dir);\n    dir.valueAccessor.writeValue(control.value);\n    // The legacy behavior only calls the CVA's `setDisabledState` if the control is disabled.\n    // If the `callSetDisabledState` option is set to `always`, then this bug is fixed and\n    // the method is always called.\n    if (control.disabled || callSetDisabledState === 'always') {\n        dir.valueAccessor.setDisabledState?.(control.disabled);\n    }\n    setUpViewChangePipeline(control, dir);\n    setUpModelChangePipeline(control, dir);\n    setUpBlurPipeline(control, dir);\n    setUpDisabledChangeHandler(control, dir);\n}\n/**\n * Reverts configuration performed by the `setUpControl` control function.\n * Effectively disconnects form control with a given form directive.\n * This function is typically invoked when corresponding form directive is being destroyed.\n *\n * @param control Form control which should be cleaned up.\n * @param dir Directive that should be disconnected from a given control.\n * @param validateControlPresenceOnChange Flag that indicates whether onChange handler should\n *     contain asserts to verify that it's not called once directive is destroyed. We need this flag\n *     to avoid potentially breaking changes caused by better control cleanup introduced in #39235.\n */\nfunction cleanUpControl(control, dir, validateControlPresenceOnChange = true) {\n    const noop = () => {\n        if (validateControlPresenceOnChange && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n            _noControlError(dir);\n        }\n    };\n    // The `valueAccessor` field is typically defined on FromControl and FormControlName directive\n    // instances and there is a logic in `selectValueAccessor` function that throws if it's not the\n    // case. We still check the presence of `valueAccessor` before invoking its methods to make sure\n    // that cleanup works correctly if app code or tests are setup to ignore the error thrown from\n    // `selectValueAccessor`. See https://github.com/angular/angular/issues/40521.\n    if (dir.valueAccessor) {\n        dir.valueAccessor.registerOnChange(noop);\n        dir.valueAccessor.registerOnTouched(noop);\n    }\n    cleanUpValidators(control, dir);\n    if (control) {\n        dir._invokeOnDestroyCallbacks();\n        control._registerOnCollectionChange(() => { });\n    }\n}\nfunction registerOnValidatorChange(validators, onChange) {\n    validators.forEach((validator) => {\n        if (validator.registerOnValidatorChange)\n            validator.registerOnValidatorChange(onChange);\n    });\n}\n/**\n * Sets up disabled change handler function on a given form control if ControlValueAccessor\n * associated with a given directive instance supports the `setDisabledState` call.\n *\n * @param control Form control where disabled change handler should be setup.\n * @param dir Corresponding directive instance associated with this control.\n */\nfunction setUpDisabledChangeHandler(control, dir) {\n    if (dir.valueAccessor.setDisabledState) {\n        const onDisabledChange = (isDisabled) => {\n            dir.valueAccessor.setDisabledState(isDisabled);\n        };\n        control.registerOnDisabledChange(onDisabledChange);\n        // Register a callback function to cleanup disabled change handler\n        // from a control instance when a directive is destroyed.\n        dir._registerOnDestroy(() => {\n            control._unregisterOnDisabledChange(onDisabledChange);\n        });\n    }\n}\n/**\n * Sets up sync and async directive validators on provided form control.\n * This function merges validators from the directive into the validators of the control.\n *\n * @param control Form control where directive validators should be setup.\n * @param dir Directive instance that contains validators to be setup.\n */\nfunction setUpValidators(control, dir) {\n    const validators = getControlValidators(control);\n    if (dir.validator !== null) {\n        control.setValidators(mergeValidators(validators, dir.validator));\n    }\n    else if (typeof validators === 'function') {\n        // If sync validators are represented by a single validator function, we force the\n        // `Validators.compose` call to happen by executing the `setValidators` function with\n        // an array that contains that function. We need this to avoid possible discrepancies in\n        // validators behavior, so sync validators are always processed by the `Validators.compose`.\n        // Note: we should consider moving this logic inside the `setValidators` function itself, so we\n        // have consistent behavior on AbstractControl API level. The same applies to the async\n        // validators logic below.\n        control.setValidators([validators]);\n    }\n    const asyncValidators = getControlAsyncValidators(control);\n    if (dir.asyncValidator !== null) {\n        control.setAsyncValidators(mergeValidators(asyncValidators, dir.asyncValidator));\n    }\n    else if (typeof asyncValidators === 'function') {\n        control.setAsyncValidators([asyncValidators]);\n    }\n    // Re-run validation when validator binding changes, e.g. minlength=3 -> minlength=4\n    const onValidatorChange = () => control.updateValueAndValidity();\n    registerOnValidatorChange(dir._rawValidators, onValidatorChange);\n    registerOnValidatorChange(dir._rawAsyncValidators, onValidatorChange);\n}\n/**\n * Cleans up sync and async directive validators on provided form control.\n * This function reverts the setup performed by the `setUpValidators` function, i.e.\n * removes directive-specific validators from a given control instance.\n *\n * @param control Form control from where directive validators should be removed.\n * @param dir Directive instance that contains validators to be removed.\n * @returns true if a control was updated as a result of this action.\n */\nfunction cleanUpValidators(control, dir) {\n    let isControlUpdated = false;\n    if (control !== null) {\n        if (dir.validator !== null) {\n            const validators = getControlValidators(control);\n            if (Array.isArray(validators) && validators.length > 0) {\n                // Filter out directive validator function.\n                const updatedValidators = validators.filter((validator) => validator !== dir.validator);\n                if (updatedValidators.length !== validators.length) {\n                    isControlUpdated = true;\n                    control.setValidators(updatedValidators);\n                }\n            }\n        }\n        if (dir.asyncValidator !== null) {\n            const asyncValidators = getControlAsyncValidators(control);\n            if (Array.isArray(asyncValidators) && asyncValidators.length > 0) {\n                // Filter out directive async validator function.\n                const updatedAsyncValidators = asyncValidators.filter((asyncValidator) => asyncValidator !== dir.asyncValidator);\n                if (updatedAsyncValidators.length !== asyncValidators.length) {\n                    isControlUpdated = true;\n                    control.setAsyncValidators(updatedAsyncValidators);\n                }\n            }\n        }\n    }\n    // Clear onValidatorChange callbacks by providing a noop function.\n    const noop = () => { };\n    registerOnValidatorChange(dir._rawValidators, noop);\n    registerOnValidatorChange(dir._rawAsyncValidators, noop);\n    return isControlUpdated;\n}\nfunction setUpViewChangePipeline(control, dir) {\n    dir.valueAccessor.registerOnChange((newValue) => {\n        control._pendingValue = newValue;\n        control._pendingChange = true;\n        control._pendingDirty = true;\n        if (control.updateOn === 'change')\n            updateControl(control, dir);\n    });\n}\nfunction setUpBlurPipeline(control, dir) {\n    dir.valueAccessor.registerOnTouched(() => {\n        control._pendingTouched = true;\n        if (control.updateOn === 'blur' && control._pendingChange)\n            updateControl(control, dir);\n        if (control.updateOn !== 'submit')\n            control.markAsTouched();\n    });\n}\nfunction updateControl(control, dir) {\n    if (control._pendingDirty)\n        control.markAsDirty();\n    control.setValue(control._pendingValue, { emitModelToViewChange: false });\n    dir.viewToModelUpdate(control._pendingValue);\n    control._pendingChange = false;\n}\nfunction setUpModelChangePipeline(control, dir) {\n    const onChange = (newValue, emitModelEvent) => {\n        // control -> view\n        dir.valueAccessor.writeValue(newValue);\n        // control -> ngModel\n        if (emitModelEvent)\n            dir.viewToModelUpdate(newValue);\n    };\n    control.registerOnChange(onChange);\n    // Register a callback function to cleanup onChange handler\n    // from a control instance when a directive is destroyed.\n    dir._registerOnDestroy(() => {\n        control._unregisterOnChange(onChange);\n    });\n}\n/**\n * Links a FormGroup or FormArray instance and corresponding Form directive by setting up validators\n * present in the view.\n *\n * @param control FormGroup or FormArray instance that should be linked.\n * @param dir Directive that provides view validators.\n */\nfunction setUpFormContainer(control, dir) {\n    if (control == null && (typeof ngDevMode === 'undefined' || ngDevMode))\n        _throwError(dir, 'Cannot find control with');\n    setUpValidators(control, dir);\n}\n/**\n * Reverts the setup performed by the `setUpFormContainer` function.\n *\n * @param control FormGroup or FormArray instance that should be cleaned up.\n * @param dir Directive that provided view validators.\n * @returns true if a control was updated as a result of this action.\n */\nfunction cleanUpFormContainer(control, dir) {\n    return cleanUpValidators(control, dir);\n}\nfunction _noControlError(dir) {\n    return _throwError(dir, 'There is no FormControl instance attached to form control element with');\n}\nfunction _throwError(dir, message) {\n    const messageEnd = _describeControlLocation(dir);\n    throw new Error(`${message} ${messageEnd}`);\n}\nfunction _describeControlLocation(dir) {\n    const path = dir.path;\n    if (path && path.length > 1)\n        return `path: '${path.join(' -> ')}'`;\n    if (path?.[0])\n        return `name: '${path}'`;\n    return 'unspecified name attribute';\n}\nfunction _throwMissingValueAccessorError(dir) {\n    const loc = _describeControlLocation(dir);\n    throw new ɵRuntimeError(-1203 /* RuntimeErrorCode.NG_MISSING_VALUE_ACCESSOR */, `No value accessor for form control ${loc}.`);\n}\nfunction _throwInvalidValueAccessorError(dir) {\n    const loc = _describeControlLocation(dir);\n    throw new ɵRuntimeError(1200 /* RuntimeErrorCode.NG_VALUE_ACCESSOR_NOT_PROVIDED */, `Value accessor was not provided as an array for form control with ${loc}. ` +\n        `Check that the \\`NG_VALUE_ACCESSOR\\` token is configured as a \\`multi: true\\` provider.`);\n}\nfunction isPropertyUpdated(changes, viewModel) {\n    if (!changes.hasOwnProperty('model'))\n        return false;\n    const change = changes['model'];\n    if (change.isFirstChange())\n        return true;\n    return !Object.is(viewModel, change.currentValue);\n}\nfunction isBuiltInAccessor(valueAccessor) {\n    // Check if a given value accessor is an instance of a class that directly extends\n    // `BuiltInControlValueAccessor` one.\n    return Object.getPrototypeOf(valueAccessor.constructor) === BuiltInControlValueAccessor;\n}\nfunction syncPendingControls(form, directives) {\n    form._syncPendingControls();\n    directives.forEach((dir) => {\n        const control = dir.control;\n        if (control.updateOn === 'submit' && control._pendingChange) {\n            dir.viewToModelUpdate(control._pendingValue);\n            control._pendingChange = false;\n        }\n    });\n}\n// TODO: vsavkin remove it once https://github.com/angular/angular/issues/3011 is implemented\nfunction selectValueAccessor(dir, valueAccessors) {\n    if (!valueAccessors)\n        return null;\n    if (!Array.isArray(valueAccessors) && (typeof ngDevMode === 'undefined' || ngDevMode))\n        _throwInvalidValueAccessorError(dir);\n    let defaultAccessor = undefined;\n    let builtinAccessor = undefined;\n    let customAccessor = undefined;\n    valueAccessors.forEach((v) => {\n        if (v.constructor === DefaultValueAccessor) {\n            defaultAccessor = v;\n        }\n        else if (isBuiltInAccessor(v)) {\n            if (builtinAccessor && (typeof ngDevMode === 'undefined' || ngDevMode))\n                _throwError(dir, 'More than one built-in value accessor matches form control with');\n            builtinAccessor = v;\n        }\n        else {\n            if (customAccessor && (typeof ngDevMode === 'undefined' || ngDevMode))\n                _throwError(dir, 'More than one custom value accessor matches form control with');\n            customAccessor = v;\n        }\n    });\n    if (customAccessor)\n        return customAccessor;\n    if (builtinAccessor)\n        return builtinAccessor;\n    if (defaultAccessor)\n        return defaultAccessor;\n    if (typeof ngDevMode === 'undefined' || ngDevMode) {\n        _throwError(dir, 'No valid value accessor for form control with');\n    }\n    return null;\n}\nfunction removeListItem$1(list, el) {\n    const index = list.indexOf(el);\n    if (index > -1)\n        list.splice(index, 1);\n}\n// TODO(kara): remove after deprecation period\nfunction _ngModelWarning(name, type, instance, warningConfig) {\n    if (warningConfig === 'never')\n        return;\n    if (((warningConfig === null || warningConfig === 'once') && !type._ngModelWarningSentOnce) ||\n        (warningConfig === 'always' && !instance._ngModelWarningSent)) {\n        console.warn(ngModelWarning(name));\n        type._ngModelWarningSentOnce = true;\n        instance._ngModelWarningSent = true;\n    }\n}\n\nconst formDirectiveProvider$1 = {\n    provide: ControlContainer,\n    useExisting: forwardRef(() => NgForm)\n};\nconst resolvedPromise$1 = (() => Promise.resolve())();\n/**\n * @description\n * Creates a top-level `FormGroup` instance and binds it to a form\n * to track aggregate form value and validation status.\n *\n * As soon as you import the `FormsModule`, this directive becomes active by default on\n * all `<form>` tags.  You don't need to add a special selector.\n *\n * You optionally export the directive into a local template variable using `ngForm` as the key\n * (ex: `#myForm=\"ngForm\"`). This is optional, but useful.  Many properties from the underlying\n * `FormGroup` instance are duplicated on the directive itself, so a reference to it\n * gives you access to the aggregate value and validity status of the form, as well as\n * user interaction properties like `dirty` and `touched`.\n *\n * To register child controls with the form, use `NgModel` with a `name`\n * attribute. You may use `NgModelGroup` to create sub-groups within the form.\n *\n * If necessary, listen to the directive's `ngSubmit` event to be notified when the user has\n * triggered a form submission. The `ngSubmit` event emits the original form\n * submission event.\n *\n * In template driven forms, all `<form>` tags are automatically tagged as `NgForm`.\n * To import the `FormsModule` but skip its usage in some forms,\n * for example, to use native HTML5 validation, add the `ngNoForm` and the `<form>`\n * tags won't create an `NgForm` directive. In reactive forms, using `ngNoForm` is\n * unnecessary because the `<form>` tags are inert. In that case, you would\n * refrain from using the `formGroup` directive.\n *\n * @usageNotes\n *\n * ### Listening for form submission\n *\n * The following example shows how to capture the form values from the \"ngSubmit\" event.\n *\n * {@example forms/ts/simpleForm/simple_form_example.ts region='Component'}\n *\n * ### Setting the update options\n *\n * The following example shows you how to change the \"updateOn\" option from its default using\n * ngFormOptions.\n *\n * ```html\n * <form [ngFormOptions]=\"{updateOn: 'blur'}\">\n *    <input name=\"one\" ngModel>  <!-- this ngModel will update on blur -->\n * </form>\n * ```\n *\n * ### Native DOM validation UI\n *\n * In order to prevent the native DOM form validation UI from interfering with Angular's form\n * validation, Angular automatically adds the `novalidate` attribute on any `<form>` whenever\n * `FormModule` or `ReactiveFormModule` are imported into the application.\n * If you want to explicitly enable native DOM validation UI with Angular forms, you can add the\n * `ngNativeValidate` attribute to the `<form>` element:\n *\n * ```html\n * <form ngNativeValidate>\n *   ...\n * </form>\n * ```\n *\n * @ngModule FormsModule\n * @publicApi\n */\nclass NgForm extends ControlContainer {\n    constructor(validators, asyncValidators, callSetDisabledState) {\n        super();\n        this.callSetDisabledState = callSetDisabledState;\n        /**\n         * @description\n         * Returns whether the form submission has been triggered.\n         */\n        this.submitted = false;\n        this._directives = new Set();\n        /**\n         * @description\n         * Event emitter for the \"ngSubmit\" event\n         */\n        this.ngSubmit = new EventEmitter();\n        this.form =\n            new FormGroup({}, composeValidators(validators), composeAsyncValidators(asyncValidators));\n    }\n    /** @nodoc */\n    ngAfterViewInit() {\n        this._setUpdateStrategy();\n    }\n    /**\n     * @description\n     * The directive instance.\n     */\n    get formDirective() {\n        return this;\n    }\n    /**\n     * @description\n     * The internal `FormGroup` instance.\n     */\n    get control() {\n        return this.form;\n    }\n    /**\n     * @description\n     * Returns an array representing the path to this group. Because this directive\n     * always lives at the top level of a form, it is always an empty array.\n     */\n    get path() {\n        return [];\n    }\n    /**\n     * @description\n     * Returns a map of the controls in this group.\n     */\n    get controls() {\n        return this.form.controls;\n    }\n    /**\n     * @description\n     * Method that sets up the control directive in this group, re-calculates its value\n     * and validity, and adds the instance to the internal list of directives.\n     *\n     * @param dir The `NgModel` directive instance.\n     */\n    addControl(dir) {\n        resolvedPromise$1.then(() => {\n            const container = this._findContainer(dir.path);\n            dir.control =\n                container.registerControl(dir.name, dir.control);\n            setUpControl(dir.control, dir, this.callSetDisabledState);\n            dir.control.updateValueAndValidity({ emitEvent: false });\n            this._directives.add(dir);\n        });\n    }\n    /**\n     * @description\n     * Retrieves the `FormControl` instance from the provided `NgModel` directive.\n     *\n     * @param dir The `NgModel` directive instance.\n     */\n    getControl(dir) {\n        return this.form.get(dir.path);\n    }\n    /**\n     * @description\n     * Removes the `NgModel` instance from the internal list of directives\n     *\n     * @param dir The `NgModel` directive instance.\n     */\n    removeControl(dir) {\n        resolvedPromise$1.then(() => {\n            const container = this._findContainer(dir.path);\n            if (container) {\n                container.removeControl(dir.name);\n            }\n            this._directives.delete(dir);\n        });\n    }\n    /**\n     * @description\n     * Adds a new `NgModelGroup` directive instance to the form.\n     *\n     * @param dir The `NgModelGroup` directive instance.\n     */\n    addFormGroup(dir) {\n        resolvedPromise$1.then(() => {\n            const container = this._findContainer(dir.path);\n            const group = new FormGroup({});\n            setUpFormContainer(group, dir);\n            container.registerControl(dir.name, group);\n            group.updateValueAndValidity({ emitEvent: false });\n        });\n    }\n    /**\n     * @description\n     * Removes the `NgModelGroup` directive instance from the form.\n     *\n     * @param dir The `NgModelGroup` directive instance.\n     */\n    removeFormGroup(dir) {\n        resolvedPromise$1.then(() => {\n            const container = this._findContainer(dir.path);\n            if (container) {\n                container.removeControl(dir.name);\n            }\n        });\n    }\n    /**\n     * @description\n     * Retrieves the `FormGroup` for a provided `NgModelGroup` directive instance\n     *\n     * @param dir The `NgModelGroup` directive instance.\n     */\n    getFormGroup(dir) {\n        return this.form.get(dir.path);\n    }\n    /**\n     * Sets the new value for the provided `NgControl` directive.\n     *\n     * @param dir The `NgControl` directive instance.\n     * @param value The new value for the directive's control.\n     */\n    updateModel(dir, value) {\n        resolvedPromise$1.then(() => {\n            const ctrl = this.form.get(dir.path);\n            ctrl.setValue(value);\n        });\n    }\n    /**\n     * @description\n     * Sets the value for this `FormGroup`.\n     *\n     * @param value The new value\n     */\n    setValue(value) {\n        this.control.setValue(value);\n    }\n    /**\n     * @description\n     * Method called when the \"submit\" event is triggered on the form.\n     * Triggers the `ngSubmit` emitter to emit the \"submit\" event as its payload.\n     *\n     * @param $event The \"submit\" event object\n     */\n    onSubmit($event) {\n        this.submitted = true;\n        syncPendingControls(this.form, this._directives);\n        this.ngSubmit.emit($event);\n        // Forms with `method=\"dialog\"` have some special behavior\n        // that won't reload the page and that shouldn't be prevented.\n        return $event?.target?.method === 'dialog';\n    }\n    /**\n     * @description\n     * Method called when the \"reset\" event is triggered on the form.\n     */\n    onReset() {\n        this.resetForm();\n    }\n    /**\n     * @description\n     * Resets the form to an initial value and resets its submitted status.\n     *\n     * @param value The new value for the form.\n     */\n    resetForm(value = undefined) {\n        this.form.reset(value);\n        this.submitted = false;\n    }\n    _setUpdateStrategy() {\n        if (this.options && this.options.updateOn != null) {\n            this.form._updateOn = this.options.updateOn;\n        }\n    }\n    _findContainer(path) {\n        path.pop();\n        return path.length ? this.form.get(path) : this.form;\n    }\n}\nNgForm.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgForm, deps: [{ token: NG_VALIDATORS, optional: true, self: true }, { token: NG_ASYNC_VALIDATORS, optional: true, self: true }, { token: CALL_SET_DISABLED_STATE, optional: true }], target: i0.ɵɵFactoryTarget.Directive });\nNgForm.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgForm, selector: \"form:not([ngNoForm]):not([formGroup]),ng-form,[ngForm]\", inputs: { options: [\"ngFormOptions\", \"options\"] }, outputs: { ngSubmit: \"ngSubmit\" }, host: { listeners: { \"submit\": \"onSubmit($event)\", \"reset\": \"onReset()\" } }, providers: [formDirectiveProvider$1], exportAs: [\"ngForm\"], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgForm, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: 'form:not([ngNoForm]):not([formGroup]),ng-form,[ngForm]',\n                    providers: [formDirectiveProvider$1],\n                    host: { '(submit)': 'onSubmit($event)', '(reset)': 'onReset()' },\n                    outputs: ['ngSubmit'],\n                    exportAs: 'ngForm'\n                }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_VALIDATORS]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_ASYNC_VALIDATORS]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [CALL_SET_DISABLED_STATE]\n                }] }]; }, propDecorators: { options: [{\n                type: Input,\n                args: ['ngFormOptions']\n            }] } });\n\nfunction removeListItem(list, el) {\n    const index = list.indexOf(el);\n    if (index > -1)\n        list.splice(index, 1);\n}\n\nfunction isFormControlState(formState) {\n    return typeof formState === 'object' && formState !== null &&\n        Object.keys(formState).length === 2 && 'value' in formState && 'disabled' in formState;\n}\nconst FormControl = (class FormControl extends AbstractControl {\n    constructor(\n    // formState and defaultValue will only be null if T is nullable\n    formState = null, validatorOrOpts, asyncValidator) {\n        super(pickValidators(validatorOrOpts), pickAsyncValidators(asyncValidator, validatorOrOpts));\n        /** @publicApi */\n        this.defaultValue = null;\n        /** @internal */\n        this._onChange = [];\n        /** @internal */\n        this._pendingChange = false;\n        this._applyFormState(formState);\n        this._setUpdateStrategy(validatorOrOpts);\n        this._initObservables();\n        this.updateValueAndValidity({\n            onlySelf: true,\n            // If `asyncValidator` is present, it will trigger control status change from `PENDING` to\n            // `VALID` or `INVALID`.\n            // The status should be broadcasted via the `statusChanges` observable, so we set\n            // `emitEvent` to `true` to allow that during the control creation process.\n            emitEvent: !!this.asyncValidator\n        });\n        if (isOptionsObj(validatorOrOpts) &&\n            (validatorOrOpts.nonNullable || validatorOrOpts.initialValueIsDefault)) {\n            if (isFormControlState(formState)) {\n                this.defaultValue = formState.value;\n            }\n            else {\n                this.defaultValue = formState;\n            }\n        }\n    }\n    setValue(value, options = {}) {\n        this.value = this._pendingValue = value;\n        if (this._onChange.length && options.emitModelToViewChange !== false) {\n            this._onChange.forEach((changeFn) => changeFn(this.value, options.emitViewToModelChange !== false));\n        }\n        this.updateValueAndValidity(options);\n    }\n    patchValue(value, options = {}) {\n        this.setValue(value, options);\n    }\n    reset(formState = this.defaultValue, options = {}) {\n        this._applyFormState(formState);\n        this.markAsPristine(options);\n        this.markAsUntouched(options);\n        this.setValue(this.value, options);\n        this._pendingChange = false;\n    }\n    /**  @internal */\n    _updateValue() { }\n    /**  @internal */\n    _anyControls(condition) {\n        return false;\n    }\n    /**  @internal */\n    _allControlsDisabled() {\n        return this.disabled;\n    }\n    registerOnChange(fn) {\n        this._onChange.push(fn);\n    }\n    /** @internal */\n    _unregisterOnChange(fn) {\n        removeListItem(this._onChange, fn);\n    }\n    registerOnDisabledChange(fn) {\n        this._onDisabledChange.push(fn);\n    }\n    /** @internal */\n    _unregisterOnDisabledChange(fn) {\n        removeListItem(this._onDisabledChange, fn);\n    }\n    /** @internal */\n    _forEachChild(cb) { }\n    /** @internal */\n    _syncPendingControls() {\n        if (this.updateOn === 'submit') {\n            if (this._pendingDirty)\n                this.markAsDirty();\n            if (this._pendingTouched)\n                this.markAsTouched();\n            if (this._pendingChange) {\n                this.setValue(this._pendingValue, { onlySelf: true, emitModelToViewChange: false });\n                return true;\n            }\n        }\n        return false;\n    }\n    _applyFormState(formState) {\n        if (isFormControlState(formState)) {\n            this.value = this._pendingValue = formState.value;\n            formState.disabled ? this.disable({ onlySelf: true, emitEvent: false }) :\n                this.enable({ onlySelf: true, emitEvent: false });\n        }\n        else {\n            this.value = this._pendingValue = formState;\n        }\n    }\n});\nconst UntypedFormControl = FormControl;\n/**\n * @description\n * Asserts that the given control is an instance of `FormControl`\n *\n * @publicApi\n */\nconst isFormControl = (control) => control instanceof FormControl;\n\n/**\n * @description\n * A base class for code shared between the `NgModelGroup` and `FormGroupName` directives.\n *\n * @publicApi\n */\nclass AbstractFormGroupDirective extends ControlContainer {\n    /** @nodoc */\n    ngOnInit() {\n        this._checkParentType();\n        // Register the group with its parent group.\n        this.formDirective.addFormGroup(this);\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        if (this.formDirective) {\n            // Remove the group from its parent group.\n            this.formDirective.removeFormGroup(this);\n        }\n    }\n    /**\n     * @description\n     * The `FormGroup` bound to this directive.\n     */\n    get control() {\n        return this.formDirective.getFormGroup(this);\n    }\n    /**\n     * @description\n     * The path to this group from the top-level directive.\n     */\n    get path() {\n        return controlPath(this.name == null ? this.name : this.name.toString(), this._parent);\n    }\n    /**\n     * @description\n     * The top-level directive for this group if present, otherwise null.\n     */\n    get formDirective() {\n        return this._parent ? this._parent.formDirective : null;\n    }\n    /** @internal */\n    _checkParentType() { }\n}\nAbstractFormGroupDirective.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: AbstractFormGroupDirective, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nAbstractFormGroupDirective.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: AbstractFormGroupDirective, usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: AbstractFormGroupDirective, decorators: [{\n            type: Directive\n        }] });\n\nfunction modelParentException() {\n    return new ɵRuntimeError(1350 /* RuntimeErrorCode.NGMODEL_IN_FORM_GROUP */, `\n    ngModel cannot be used to register form controls with a parent formGroup directive.  Try using\n    formGroup's partner directive \"formControlName\" instead.  Example:\n\n    ${formControlNameExample}\n\n    Or, if you'd like to avoid registering this form control, indicate that it's standalone in ngModelOptions:\n\n    Example:\n\n    ${ngModelWithFormGroupExample}`);\n}\nfunction formGroupNameException() {\n    return new ɵRuntimeError(1351 /* RuntimeErrorCode.NGMODEL_IN_FORM_GROUP_NAME */, `\n    ngModel cannot be used to register form controls with a parent formGroupName or formArrayName directive.\n\n    Option 1: Use formControlName instead of ngModel (reactive strategy):\n\n    ${formGroupNameExample}\n\n    Option 2:  Update ngModel's parent be ngModelGroup (template-driven strategy):\n\n    ${ngModelGroupExample}`);\n}\nfunction missingNameException() {\n    return new ɵRuntimeError(1352 /* RuntimeErrorCode.NGMODEL_WITHOUT_NAME */, `If ngModel is used within a form tag, either the name attribute must be set or the form\n    control must be defined as 'standalone' in ngModelOptions.\n\n    Example 1: <input [(ngModel)]=\"person.firstName\" name=\"first\">\n    Example 2: <input [(ngModel)]=\"person.firstName\" [ngModelOptions]=\"{standalone: true}\">`);\n}\nfunction modelGroupParentException() {\n    return new ɵRuntimeError(1353 /* RuntimeErrorCode.NGMODELGROUP_IN_FORM_GROUP */, `\n    ngModelGroup cannot be used with a parent formGroup directive.\n\n    Option 1: Use formGroupName instead of ngModelGroup (reactive strategy):\n\n    ${formGroupNameExample}\n\n    Option 2:  Use a regular form tag instead of the formGroup directive (template-driven strategy):\n\n    ${ngModelGroupExample}`);\n}\n\nconst modelGroupProvider = {\n    provide: ControlContainer,\n    useExisting: forwardRef(() => NgModelGroup)\n};\n/**\n * @description\n * Creates and binds a `FormGroup` instance to a DOM element.\n *\n * This directive can only be used as a child of `NgForm` (within `<form>` tags).\n *\n * Use this directive to validate a sub-group of your form separately from the\n * rest of your form, or if some values in your domain model make more sense\n * to consume together in a nested object.\n *\n * Provide a name for the sub-group and it will become the key\n * for the sub-group in the form's full value. If you need direct access, export the directive into\n * a local template variable using `ngModelGroup` (ex: `#myGroup=\"ngModelGroup\"`).\n *\n * @usageNotes\n *\n * ### Consuming controls in a grouping\n *\n * The following example shows you how to combine controls together in a sub-group\n * of the form.\n *\n * {@example forms/ts/ngModelGroup/ng_model_group_example.ts region='Component'}\n *\n * @ngModule FormsModule\n * @publicApi\n */\nclass NgModelGroup extends AbstractFormGroupDirective {\n    constructor(parent, validators, asyncValidators) {\n        super();\n        this._parent = parent;\n        this._setValidators(validators);\n        this._setAsyncValidators(asyncValidators);\n    }\n    /** @internal */\n    _checkParentType() {\n        if (!(this._parent instanceof NgModelGroup) && !(this._parent instanceof NgForm) &&\n            (typeof ngDevMode === 'undefined' || ngDevMode)) {\n            throw modelGroupParentException();\n        }\n    }\n}\nNgModelGroup.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgModelGroup, deps: [{ token: ControlContainer, host: true, skipSelf: true }, { token: NG_VALIDATORS, optional: true, self: true }, { token: NG_ASYNC_VALIDATORS, optional: true, self: true }], target: i0.ɵɵFactoryTarget.Directive });\nNgModelGroup.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgModelGroup, selector: \"[ngModelGroup]\", inputs: { name: [\"ngModelGroup\", \"name\"] }, providers: [modelGroupProvider], exportAs: [\"ngModelGroup\"], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgModelGroup, decorators: [{\n            type: Directive,\n            args: [{ selector: '[ngModelGroup]', providers: [modelGroupProvider], exportAs: 'ngModelGroup' }]\n        }], ctorParameters: function () { return [{ type: ControlContainer, decorators: [{\n                    type: Host\n                }, {\n                    type: SkipSelf\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_VALIDATORS]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_ASYNC_VALIDATORS]\n                }] }]; }, propDecorators: { name: [{\n                type: Input,\n                args: ['ngModelGroup']\n            }] } });\n\nconst formControlBinding$1 = {\n    provide: NgControl,\n    useExisting: forwardRef(() => NgModel)\n};\n/**\n * `ngModel` forces an additional change detection run when its inputs change:\n * E.g.:\n * ```\n * <div>{{myModel.valid}}</div>\n * <input [(ngModel)]=\"myValue\" #myModel=\"ngModel\">\n * ```\n * I.e. `ngModel` can export itself on the element and then be used in the template.\n * Normally, this would result in expressions before the `input` that use the exported directive\n * to have an old value as they have been\n * dirty checked before. As this is a very common case for `ngModel`, we added this second change\n * detection run.\n *\n * Notes:\n * - this is just one extra run no matter how many `ngModel`s have been changed.\n * - this is a general problem when using `exportAs` for directives!\n */\nconst resolvedPromise = (() => Promise.resolve())();\n/**\n * @description\n * Creates a `FormControl` instance from a domain model and binds it\n * to a form control element.\n *\n * The `FormControl` instance tracks the value, user interaction, and\n * validation status of the control and keeps the view synced with the model. If used\n * within a parent form, the directive also registers itself with the form as a child\n * control.\n *\n * This directive is used by itself or as part of a larger form. Use the\n * `ngModel` selector to activate it.\n *\n * It accepts a domain model as an optional `Input`. If you have a one-way binding\n * to `ngModel` with `[]` syntax, changing the domain model's value in the component\n * class sets the value in the view. If you have a two-way binding with `[()]` syntax\n * (also known as 'banana-in-a-box syntax'), the value in the UI always syncs back to\n * the domain model in your class.\n *\n * To inspect the properties of the associated `FormControl` (like the validity state),\n * export the directive into a local template variable using `ngModel` as the key (ex:\n * `#myVar=\"ngModel\"`). You can then access the control using the directive's `control` property.\n * However, the most commonly used properties (like `valid` and `dirty`) also exist on the control\n * for direct access. See a full list of properties directly available in\n * `AbstractControlDirective`.\n *\n * @see `RadioControlValueAccessor`\n * @see `SelectControlValueAccessor`\n *\n * @usageNotes\n *\n * ### Using ngModel on a standalone control\n *\n * The following examples show a simple standalone control using `ngModel`:\n *\n * {@example forms/ts/simpleNgModel/simple_ng_model_example.ts region='Component'}\n *\n * When using the `ngModel` within `<form>` tags, you'll also need to supply a `name` attribute\n * so that the control can be registered with the parent form under that name.\n *\n * In the context of a parent form, it's often unnecessary to include one-way or two-way binding,\n * as the parent form syncs the value for you. You access its properties by exporting it into a\n * local template variable using `ngForm` such as (`#f=\"ngForm\"`). Use the variable where\n * needed on form submission.\n *\n * If you do need to populate initial values into your form, using a one-way binding for\n * `ngModel` tends to be sufficient as long as you use the exported form's value rather\n * than the domain model's value on submit.\n *\n * ### Using ngModel within a form\n *\n * The following example shows controls using `ngModel` within a form:\n *\n * {@example forms/ts/simpleForm/simple_form_example.ts region='Component'}\n *\n * ### Using a standalone ngModel within a group\n *\n * The following example shows you how to use a standalone ngModel control\n * within a form. This controls the display of the form, but doesn't contain form data.\n *\n * ```html\n * <form>\n *   <input name=\"login\" ngModel placeholder=\"Login\">\n *   <input type=\"checkbox\" ngModel [ngModelOptions]=\"{standalone: true}\"> Show more options?\n * </form>\n * <!-- form value: {login: ''} -->\n * ```\n *\n * ### Setting the ngModel `name` attribute through options\n *\n * The following example shows you an alternate way to set the name attribute. Here,\n * an attribute identified as name is used within a custom form control component. To still be able\n * to specify the NgModel's name, you must specify it using the `ngModelOptions` input instead.\n *\n * ```html\n * <form>\n *   <my-custom-form-control name=\"Nancy\" ngModel [ngModelOptions]=\"{name: 'user'}\">\n *   </my-custom-form-control>\n * </form>\n * <!-- form value: {user: ''} -->\n * ```\n *\n * @ngModule FormsModule\n * @publicApi\n */\nclass NgModel extends NgControl {\n    constructor(parent, validators, asyncValidators, valueAccessors, _changeDetectorRef, callSetDisabledState) {\n        super();\n        this._changeDetectorRef = _changeDetectorRef;\n        this.callSetDisabledState = callSetDisabledState;\n        this.control = new FormControl();\n        /** @internal */\n        this._registered = false;\n        /**\n         * @description\n         * Event emitter for producing the `ngModelChange` event after\n         * the view model updates.\n         */\n        this.update = new EventEmitter();\n        this._parent = parent;\n        this._setValidators(validators);\n        this._setAsyncValidators(asyncValidators);\n        this.valueAccessor = selectValueAccessor(this, valueAccessors);\n    }\n    /** @nodoc */\n    ngOnChanges(changes) {\n        this._checkForErrors();\n        if (!this._registered || 'name' in changes) {\n            if (this._registered) {\n                this._checkName();\n                if (this.formDirective) {\n                    // We can't call `formDirective.removeControl(this)`, because the `name` has already been\n                    // changed. We also can't reset the name temporarily since the logic in `removeControl`\n                    // is inside a promise and it won't run immediately. We work around it by giving it an\n                    // object with the same shape instead.\n                    const oldName = changes['name'].previousValue;\n                    this.formDirective.removeControl({ name: oldName, path: this._getPath(oldName) });\n                }\n            }\n            this._setUpControl();\n        }\n        if ('isDisabled' in changes) {\n            this._updateDisabled(changes);\n        }\n        if (isPropertyUpdated(changes, this.viewModel)) {\n            this._updateValue(this.model);\n            this.viewModel = this.model;\n        }\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        this.formDirective && this.formDirective.removeControl(this);\n    }\n    /**\n     * @description\n     * Returns an array that represents the path from the top-level form to this control.\n     * Each index is the string name of the control on that level.\n     */\n    get path() {\n        return this._getPath(this.name);\n    }\n    /**\n     * @description\n     * The top-level directive for this control if present, otherwise null.\n     */\n    get formDirective() {\n        return this._parent ? this._parent.formDirective : null;\n    }\n    /**\n     * @description\n     * Sets the new value for the view model and emits an `ngModelChange` event.\n     *\n     * @param newValue The new value emitted by `ngModelChange`.\n     */\n    viewToModelUpdate(newValue) {\n        this.viewModel = newValue;\n        this.update.emit(newValue);\n    }\n    _setUpControl() {\n        this._setUpdateStrategy();\n        this._isStandalone() ? this._setUpStandalone() : this.formDirective.addControl(this);\n        this._registered = true;\n    }\n    _setUpdateStrategy() {\n        if (this.options && this.options.updateOn != null) {\n            this.control._updateOn = this.options.updateOn;\n        }\n    }\n    _isStandalone() {\n        return !this._parent || !!(this.options && this.options.standalone);\n    }\n    _setUpStandalone() {\n        setUpControl(this.control, this, this.callSetDisabledState);\n        this.control.updateValueAndValidity({ emitEvent: false });\n    }\n    _checkForErrors() {\n        if (!this._isStandalone()) {\n            this._checkParentType();\n        }\n        this._checkName();\n    }\n    _checkParentType() {\n        if (typeof ngDevMode === 'undefined' || ngDevMode) {\n            if (!(this._parent instanceof NgModelGroup) &&\n                this._parent instanceof AbstractFormGroupDirective) {\n                throw formGroupNameException();\n            }\n            else if (!(this._parent instanceof NgModelGroup) && !(this._parent instanceof NgForm)) {\n                throw modelParentException();\n            }\n        }\n    }\n    _checkName() {\n        if (this.options && this.options.name)\n            this.name = this.options.name;\n        if (!this._isStandalone() && !this.name && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n            throw missingNameException();\n        }\n    }\n    _updateValue(value) {\n        resolvedPromise.then(() => {\n            this.control.setValue(value, { emitViewToModelChange: false });\n            this._changeDetectorRef?.markForCheck();\n        });\n    }\n    _updateDisabled(changes) {\n        const disabledValue = changes['isDisabled'].currentValue;\n        // checking for 0 to avoid breaking change\n        const isDisabled = disabledValue !== 0 && ɵcoerceToBoolean(disabledValue);\n        resolvedPromise.then(() => {\n            if (isDisabled && !this.control.disabled) {\n                this.control.disable();\n            }\n            else if (!isDisabled && this.control.disabled) {\n                this.control.enable();\n            }\n            this._changeDetectorRef?.markForCheck();\n        });\n    }\n    _getPath(controlName) {\n        return this._parent ? controlPath(controlName, this._parent) : [controlName];\n    }\n}\nNgModel.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgModel, deps: [{ token: ControlContainer, host: true, optional: true }, { token: NG_VALIDATORS, optional: true, self: true }, { token: NG_ASYNC_VALIDATORS, optional: true, self: true }, { token: NG_VALUE_ACCESSOR, optional: true, self: true }, { token: ChangeDetectorRef, optional: true }, { token: CALL_SET_DISABLED_STATE, optional: true }], target: i0.ɵɵFactoryTarget.Directive });\nNgModel.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgModel, selector: \"[ngModel]:not([formControlName]):not([formControl])\", inputs: { name: \"name\", isDisabled: [\"disabled\", \"isDisabled\"], model: [\"ngModel\", \"model\"], options: [\"ngModelOptions\", \"options\"] }, outputs: { update: \"ngModelChange\" }, providers: [formControlBinding$1], exportAs: [\"ngModel\"], usesInheritance: true, usesOnChanges: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgModel, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[ngModel]:not([formControlName]):not([formControl])',\n                    providers: [formControlBinding$1],\n                    exportAs: 'ngModel'\n                }]\n        }], ctorParameters: function () { return [{ type: ControlContainer, decorators: [{\n                    type: Optional\n                }, {\n                    type: Host\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_VALIDATORS]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_ASYNC_VALIDATORS]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_VALUE_ACCESSOR]\n                }] }, { type: i0.ChangeDetectorRef, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [ChangeDetectorRef]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [CALL_SET_DISABLED_STATE]\n                }] }]; }, propDecorators: { name: [{\n                type: Input\n            }], isDisabled: [{\n                type: Input,\n                args: ['disabled']\n            }], model: [{\n                type: Input,\n                args: ['ngModel']\n            }], options: [{\n                type: Input,\n                args: ['ngModelOptions']\n            }], update: [{\n                type: Output,\n                args: ['ngModelChange']\n            }] } });\n\n/**\n * @description\n *\n * Adds `novalidate` attribute to all forms by default.\n *\n * `novalidate` is used to disable browser's native form validation.\n *\n * If you want to use native validation with Angular forms, just add `ngNativeValidate` attribute:\n *\n * ```\n * <form ngNativeValidate></form>\n * ```\n *\n * @publicApi\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n */\nclass ɵNgNoValidate {\n}\nɵNgNoValidate.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: ɵNgNoValidate, deps: [], target: i0.ɵɵFactoryTarget.Directive });\nɵNgNoValidate.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: ɵNgNoValidate, selector: \"form:not([ngNoForm]):not([ngNativeValidate])\", host: { attributes: { \"novalidate\": \"\" } }, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: ɵNgNoValidate, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: 'form:not([ngNoForm]):not([ngNativeValidate])',\n                    host: { 'novalidate': '' },\n                }]\n        }] });\n\nconst NUMBER_VALUE_ACCESSOR = {\n    provide: NG_VALUE_ACCESSOR,\n    useExisting: forwardRef(() => NumberValueAccessor),\n    multi: true\n};\n/**\n * @description\n * The `ControlValueAccessor` for writing a number value and listening to number input changes.\n * The value accessor is used by the `FormControlDirective`, `FormControlName`, and `NgModel`\n * directives.\n *\n * @usageNotes\n *\n * ### Using a number input with a reactive form.\n *\n * The following example shows how to use a number input with a reactive form.\n *\n * ```ts\n * const totalCountControl = new FormControl();\n * ```\n *\n * ```\n * <input type=\"number\" [formControl]=\"totalCountControl\">\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass NumberValueAccessor extends BuiltInControlValueAccessor {\n    /**\n     * Sets the \"value\" property on the input element.\n     * @nodoc\n     */\n    writeValue(value) {\n        // The value needs to be normalized for IE9, otherwise it is set to 'null' when null\n        const normalizedValue = value == null ? '' : value;\n        this.setProperty('value', normalizedValue);\n    }\n    /**\n     * Registers a function called when the control value changes.\n     * @nodoc\n     */\n    registerOnChange(fn) {\n        this.onChange = (value) => {\n            fn(value == '' ? null : parseFloat(value));\n        };\n    }\n}\nNumberValueAccessor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NumberValueAccessor, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nNumberValueAccessor.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NumberValueAccessor, selector: \"input[type=number][formControlName],input[type=number][formControl],input[type=number][ngModel]\", host: { listeners: { \"input\": \"onChange($event.target.value)\", \"blur\": \"onTouched()\" } }, providers: [NUMBER_VALUE_ACCESSOR], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NumberValueAccessor, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: 'input[type=number][formControlName],input[type=number][formControl],input[type=number][ngModel]',\n                    host: { '(input)': 'onChange($event.target.value)', '(blur)': 'onTouched()' },\n                    providers: [NUMBER_VALUE_ACCESSOR]\n                }]\n        }] });\n\nconst RADIO_VALUE_ACCESSOR = {\n    provide: NG_VALUE_ACCESSOR,\n    useExisting: forwardRef(() => RadioControlValueAccessor),\n    multi: true\n};\nfunction throwNameError() {\n    throw new ɵRuntimeError(1202 /* RuntimeErrorCode.NAME_AND_FORM_CONTROL_NAME_MUST_MATCH */, `\n      If you define both a name and a formControlName attribute on your radio button, their values\n      must match. Ex: <input type=\"radio\" formControlName=\"food\" name=\"food\">\n    `);\n}\n/**\n * Internal-only NgModule that works as a host for the `RadioControlRegistry` tree-shakable\n * provider. Note: the `InternalFormsSharedModule` can not be used here directly, since it's\n * declared *after* the `RadioControlRegistry` class and the `providedIn` doesn't support\n * `forwardRef` logic.\n */\nclass RadioControlRegistryModule {\n}\nRadioControlRegistryModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: RadioControlRegistryModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nRadioControlRegistryModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: RadioControlRegistryModule });\nRadioControlRegistryModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: RadioControlRegistryModule });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: RadioControlRegistryModule, decorators: [{\n            type: NgModule\n        }] });\n/**\n * @description\n * Class used by Angular to track radio buttons. For internal use only.\n */\nclass RadioControlRegistry {\n    constructor() {\n        this._accessors = [];\n    }\n    /**\n     * @description\n     * Adds a control to the internal registry. For internal use only.\n     */\n    add(control, accessor) {\n        this._accessors.push([control, accessor]);\n    }\n    /**\n     * @description\n     * Removes a control from the internal registry. For internal use only.\n     */\n    remove(accessor) {\n        for (let i = this._accessors.length - 1; i >= 0; --i) {\n            if (this._accessors[i][1] === accessor) {\n                this._accessors.splice(i, 1);\n                return;\n            }\n        }\n    }\n    /**\n     * @description\n     * Selects a radio button. For internal use only.\n     */\n    select(accessor) {\n        this._accessors.forEach((c) => {\n            if (this._isSameGroup(c, accessor) && c[1] !== accessor) {\n                c[1].fireUncheck(accessor.value);\n            }\n        });\n    }\n    _isSameGroup(controlPair, accessor) {\n        if (!controlPair[0].control)\n            return false;\n        return controlPair[0]._parent === accessor._control._parent &&\n            controlPair[1].name === accessor.name;\n    }\n}\nRadioControlRegistry.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: RadioControlRegistry, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nRadioControlRegistry.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: RadioControlRegistry, providedIn: RadioControlRegistryModule });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: RadioControlRegistry, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: RadioControlRegistryModule }]\n        }] });\n/**\n * @description\n * The `ControlValueAccessor` for writing radio control values and listening to radio control\n * changes. The value accessor is used by the `FormControlDirective`, `FormControlName`, and\n * `NgModel` directives.\n *\n * @usageNotes\n *\n * ### Using radio buttons with reactive form directives\n *\n * The follow example shows how to use radio buttons in a reactive form. When using radio buttons in\n * a reactive form, radio buttons in the same group should have the same `formControlName`.\n * Providing a `name` attribute is optional.\n *\n * {@example forms/ts/reactiveRadioButtons/reactive_radio_button_example.ts region='Reactive'}\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass RadioControlValueAccessor extends BuiltInControlValueAccessor {\n    constructor(renderer, elementRef, _registry, _injector) {\n        super(renderer, elementRef);\n        this._registry = _registry;\n        this._injector = _injector;\n        this.setDisabledStateFired = false;\n        /**\n         * The registered callback function called when a change event occurs on the input element.\n         * Note: we declare `onChange` here (also used as host listener) as a function with no arguments\n         * to override the `onChange` function (which expects 1 argument) in the parent\n         * `BaseControlValueAccessor` class.\n         * @nodoc\n         */\n        this.onChange = () => { };\n        this.callSetDisabledState = inject(CALL_SET_DISABLED_STATE, { optional: true }) ?? setDisabledStateDefault;\n    }\n    /** @nodoc */\n    ngOnInit() {\n        this._control = this._injector.get(NgControl);\n        this._checkName();\n        this._registry.add(this._control, this);\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        this._registry.remove(this);\n    }\n    /**\n     * Sets the \"checked\" property value on the radio input element.\n     * @nodoc\n     */\n    writeValue(value) {\n        this._state = value === this.value;\n        this.setProperty('checked', this._state);\n    }\n    /**\n     * Registers a function called when the control value changes.\n     * @nodoc\n     */\n    registerOnChange(fn) {\n        this._fn = fn;\n        this.onChange = () => {\n            fn(this.value);\n            this._registry.select(this);\n        };\n    }\n    /** @nodoc */\n    setDisabledState(isDisabled) {\n        /**\n         * `setDisabledState` is supposed to be called whenever the disabled state of a control changes,\n         * including upon control creation. However, a longstanding bug caused the method to not fire\n         * when an *enabled* control was attached. This bug was fixed in v15 in #47576.\n         *\n         * This had a side effect: previously, it was possible to instantiate a reactive form control\n         * with `[attr.disabled]=true`, even though the the corresponding control was enabled in the\n         * model. This resulted in a mismatch between the model and the DOM. Now, because\n         * `setDisabledState` is always called, the value in the DOM will be immediately overwritten\n         * with the \"correct\" enabled value.\n         *\n         * However, the fix also created an exceptional case: radio buttons. Because Reactive Forms\n         * models the entire group of radio buttons as a single `FormControl`, there is no way to\n         * control the disabled state for individual radios, so they can no longer be configured as\n         * disabled. Thus, we keep the old behavior for radio buttons, so that `[attr.disabled]`\n         * continues to work. Specifically, we drop the first call to `setDisabledState` if `disabled`\n         * is `false`, and we are not in legacy mode.\n         */\n        if (this.setDisabledStateFired || isDisabled ||\n            this.callSetDisabledState === 'whenDisabledForLegacyCode') {\n            this.setProperty('disabled', isDisabled);\n        }\n        this.setDisabledStateFired = true;\n    }\n    /**\n     * Sets the \"value\" on the radio input element and unchecks it.\n     *\n     * @param value\n     */\n    fireUncheck(value) {\n        this.writeValue(value);\n    }\n    _checkName() {\n        if (this.name && this.formControlName && this.name !== this.formControlName &&\n            (typeof ngDevMode === 'undefined' || ngDevMode)) {\n            throwNameError();\n        }\n        if (!this.name && this.formControlName)\n            this.name = this.formControlName;\n    }\n}\nRadioControlValueAccessor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: RadioControlValueAccessor, deps: [{ token: i0.Renderer2 }, { token: i0.ElementRef }, { token: RadioControlRegistry }, { token: i0.Injector }], target: i0.ɵɵFactoryTarget.Directive });\nRadioControlValueAccessor.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: RadioControlValueAccessor, selector: \"input[type=radio][formControlName],input[type=radio][formControl],input[type=radio][ngModel]\", inputs: { name: \"name\", formControlName: \"formControlName\", value: \"value\" }, host: { listeners: { \"change\": \"onChange()\", \"blur\": \"onTouched()\" } }, providers: [RADIO_VALUE_ACCESSOR], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: RadioControlValueAccessor, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: 'input[type=radio][formControlName],input[type=radio][formControl],input[type=radio][ngModel]',\n                    host: { '(change)': 'onChange()', '(blur)': 'onTouched()' },\n                    providers: [RADIO_VALUE_ACCESSOR]\n                }]\n        }], ctorParameters: function () { return [{ type: i0.Renderer2 }, { type: i0.ElementRef }, { type: RadioControlRegistry }, { type: i0.Injector }]; }, propDecorators: { name: [{\n                type: Input\n            }], formControlName: [{\n                type: Input\n            }], value: [{\n                type: Input\n            }] } });\n\nconst RANGE_VALUE_ACCESSOR = {\n    provide: NG_VALUE_ACCESSOR,\n    useExisting: forwardRef(() => RangeValueAccessor),\n    multi: true\n};\n/**\n * @description\n * The `ControlValueAccessor` for writing a range value and listening to range input changes.\n * The value accessor is used by the `FormControlDirective`, `FormControlName`, and  `NgModel`\n * directives.\n *\n * @usageNotes\n *\n * ### Using a range input with a reactive form\n *\n * The following example shows how to use a range input with a reactive form.\n *\n * ```ts\n * const ageControl = new FormControl();\n * ```\n *\n * ```\n * <input type=\"range\" [formControl]=\"ageControl\">\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass RangeValueAccessor extends BuiltInControlValueAccessor {\n    /**\n     * Sets the \"value\" property on the input element.\n     * @nodoc\n     */\n    writeValue(value) {\n        this.setProperty('value', parseFloat(value));\n    }\n    /**\n     * Registers a function called when the control value changes.\n     * @nodoc\n     */\n    registerOnChange(fn) {\n        this.onChange = (value) => {\n            fn(value == '' ? null : parseFloat(value));\n        };\n    }\n}\nRangeValueAccessor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: RangeValueAccessor, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nRangeValueAccessor.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: RangeValueAccessor, selector: \"input[type=range][formControlName],input[type=range][formControl],input[type=range][ngModel]\", host: { listeners: { \"change\": \"onChange($event.target.value)\", \"input\": \"onChange($event.target.value)\", \"blur\": \"onTouched()\" } }, providers: [RANGE_VALUE_ACCESSOR], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: RangeValueAccessor, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: 'input[type=range][formControlName],input[type=range][formControl],input[type=range][ngModel]',\n                    host: {\n                        '(change)': 'onChange($event.target.value)',\n                        '(input)': 'onChange($event.target.value)',\n                        '(blur)': 'onTouched()'\n                    },\n                    providers: [RANGE_VALUE_ACCESSOR]\n                }]\n        }] });\n\n/**\n * Token to provide to turn off the ngModel warning on formControl and formControlName.\n */\nconst NG_MODEL_WITH_FORM_CONTROL_WARNING = new InjectionToken('NgModelWithFormControlWarning');\nconst formControlBinding = {\n    provide: NgControl,\n    useExisting: forwardRef(() => FormControlDirective)\n};\n/**\n * @description\n * Synchronizes a standalone `FormControl` instance to a form control element.\n *\n * Note that support for using the `ngModel` input property and `ngModelChange` event with reactive\n * form directives was deprecated in Angular v6 and is scheduled for removal in\n * a future version of Angular.\n * For details, see [Deprecated features](guide/deprecations#ngmodel-with-reactive-forms).\n *\n * @see [Reactive Forms Guide](guide/reactive-forms)\n * @see `FormControl`\n * @see `AbstractControl`\n *\n * @usageNotes\n *\n * The following example shows how to register a standalone control and set its value.\n *\n * {@example forms/ts/simpleFormControl/simple_form_control_example.ts region='Component'}\n *\n * @ngModule ReactiveFormsModule\n * @publicApi\n */\nclass FormControlDirective extends NgControl {\n    /**\n     * @description\n     * Triggers a warning in dev mode that this input should not be used with reactive forms.\n     */\n    set isDisabled(isDisabled) {\n        if (typeof ngDevMode === 'undefined' || ngDevMode) {\n            console.warn(disabledAttrWarning);\n        }\n    }\n    constructor(validators, asyncValidators, valueAccessors, _ngModelWarningConfig, callSetDisabledState) {\n        super();\n        this._ngModelWarningConfig = _ngModelWarningConfig;\n        this.callSetDisabledState = callSetDisabledState;\n        /** @deprecated as of v6 */\n        this.update = new EventEmitter();\n        /**\n         * @description\n         * Instance property used to track whether an ngModel warning has been sent out for this\n         * particular `FormControlDirective` instance. Used to support warning config of \"always\".\n         *\n         * @internal\n         */\n        this._ngModelWarningSent = false;\n        this._setValidators(validators);\n        this._setAsyncValidators(asyncValidators);\n        this.valueAccessor = selectValueAccessor(this, valueAccessors);\n    }\n    /** @nodoc */\n    ngOnChanges(changes) {\n        if (this._isControlChanged(changes)) {\n            const previousForm = changes['form'].previousValue;\n            if (previousForm) {\n                cleanUpControl(previousForm, this, /* validateControlPresenceOnChange */ false);\n            }\n            setUpControl(this.form, this, this.callSetDisabledState);\n            this.form.updateValueAndValidity({ emitEvent: false });\n        }\n        if (isPropertyUpdated(changes, this.viewModel)) {\n            if (typeof ngDevMode === 'undefined' || ngDevMode) {\n                _ngModelWarning('formControl', FormControlDirective, this, this._ngModelWarningConfig);\n            }\n            this.form.setValue(this.model);\n            this.viewModel = this.model;\n        }\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        if (this.form) {\n            cleanUpControl(this.form, this, /* validateControlPresenceOnChange */ false);\n        }\n    }\n    /**\n     * @description\n     * Returns an array that represents the path from the top-level form to this control.\n     * Each index is the string name of the control on that level.\n     */\n    get path() {\n        return [];\n    }\n    /**\n     * @description\n     * The `FormControl` bound to this directive.\n     */\n    get control() {\n        return this.form;\n    }\n    /**\n     * @description\n     * Sets the new value for the view model and emits an `ngModelChange` event.\n     *\n     * @param newValue The new value for the view model.\n     */\n    viewToModelUpdate(newValue) {\n        this.viewModel = newValue;\n        this.update.emit(newValue);\n    }\n    _isControlChanged(changes) {\n        return changes.hasOwnProperty('form');\n    }\n}\n/**\n * @description\n * Static property used to track whether any ngModel warnings have been sent across\n * all instances of FormControlDirective. Used to support warning config of \"once\".\n *\n * @internal\n */\nFormControlDirective._ngModelWarningSentOnce = false;\nFormControlDirective.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormControlDirective, deps: [{ token: NG_VALIDATORS, optional: true, self: true }, { token: NG_ASYNC_VALIDATORS, optional: true, self: true }, { token: NG_VALUE_ACCESSOR, optional: true, self: true }, { token: NG_MODEL_WITH_FORM_CONTROL_WARNING, optional: true }, { token: CALL_SET_DISABLED_STATE, optional: true }], target: i0.ɵɵFactoryTarget.Directive });\nFormControlDirective.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: FormControlDirective, selector: \"[formControl]\", inputs: { form: [\"formControl\", \"form\"], isDisabled: [\"disabled\", \"isDisabled\"], model: [\"ngModel\", \"model\"] }, outputs: { update: \"ngModelChange\" }, providers: [formControlBinding], exportAs: [\"ngForm\"], usesInheritance: true, usesOnChanges: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormControlDirective, decorators: [{\n            type: Directive,\n            args: [{ selector: '[formControl]', providers: [formControlBinding], exportAs: 'ngForm' }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_VALIDATORS]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_ASYNC_VALIDATORS]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_VALUE_ACCESSOR]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [NG_MODEL_WITH_FORM_CONTROL_WARNING]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [CALL_SET_DISABLED_STATE]\n                }] }]; }, propDecorators: { form: [{\n                type: Input,\n                args: ['formControl']\n            }], isDisabled: [{\n                type: Input,\n                args: ['disabled']\n            }], model: [{\n                type: Input,\n                args: ['ngModel']\n            }], update: [{\n                type: Output,\n                args: ['ngModelChange']\n            }] } });\n\nconst formDirectiveProvider = {\n    provide: ControlContainer,\n    useExisting: forwardRef(() => FormGroupDirective)\n};\n/**\n * @description\n *\n * Binds an existing `FormGroup` or `FormRecord` to a DOM element.\n *\n * This directive accepts an existing `FormGroup` instance. It will then use this\n * `FormGroup` instance to match any child `FormControl`, `FormGroup`/`FormRecord`,\n * and `FormArray` instances to child `FormControlName`, `FormGroupName`,\n * and `FormArrayName` directives.\n *\n * @see [Reactive Forms Guide](guide/reactive-forms)\n * @see `AbstractControl`\n *\n * @usageNotes\n * ### Register Form Group\n *\n * The following example registers a `FormGroup` with first name and last name controls,\n * and listens for the *ngSubmit* event when the button is clicked.\n *\n * {@example forms/ts/simpleFormGroup/simple_form_group_example.ts region='Component'}\n *\n * @ngModule ReactiveFormsModule\n * @publicApi\n */\nclass FormGroupDirective extends ControlContainer {\n    constructor(validators, asyncValidators, callSetDisabledState) {\n        super();\n        this.callSetDisabledState = callSetDisabledState;\n        /**\n         * @description\n         * Reports whether the form submission has been triggered.\n         */\n        this.submitted = false;\n        /**\n         * Callback that should be invoked when controls in FormGroup or FormArray collection change\n         * (added or removed). This callback triggers corresponding DOM updates.\n         */\n        this._onCollectionChange = () => this._updateDomValue();\n        /**\n         * @description\n         * Tracks the list of added `FormControlName` instances\n         */\n        this.directives = [];\n        /**\n         * @description\n         * Tracks the `FormGroup` bound to this directive.\n         */\n        this.form = null;\n        /**\n         * @description\n         * Emits an event when the form submission has been triggered.\n         */\n        this.ngSubmit = new EventEmitter();\n        this._setValidators(validators);\n        this._setAsyncValidators(asyncValidators);\n    }\n    /** @nodoc */\n    ngOnChanges(changes) {\n        this._checkFormPresent();\n        if (changes.hasOwnProperty('form')) {\n            this._updateValidators();\n            this._updateDomValue();\n            this._updateRegistrations();\n            this._oldForm = this.form;\n        }\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        if (this.form) {\n            cleanUpValidators(this.form, this);\n            // Currently the `onCollectionChange` callback is rewritten each time the\n            // `_registerOnCollectionChange` function is invoked. The implication is that cleanup should\n            // happen *only* when the `onCollectionChange` callback was set by this directive instance.\n            // Otherwise it might cause overriding a callback of some other directive instances. We should\n            // consider updating this logic later to make it similar to how `onChange` callbacks are\n            // handled, see https://github.com/angular/angular/issues/39732 for additional info.\n            if (this.form._onCollectionChange === this._onCollectionChange) {\n                this.form._registerOnCollectionChange(() => { });\n            }\n        }\n    }\n    /**\n     * @description\n     * Returns this directive's instance.\n     */\n    get formDirective() {\n        return this;\n    }\n    /**\n     * @description\n     * Returns the `FormGroup` bound to this directive.\n     */\n    get control() {\n        return this.form;\n    }\n    /**\n     * @description\n     * Returns an array representing the path to this group. Because this directive\n     * always lives at the top level of a form, it always an empty array.\n     */\n    get path() {\n        return [];\n    }\n    /**\n     * @description\n     * Method that sets up the control directive in this group, re-calculates its value\n     * and validity, and adds the instance to the internal list of directives.\n     *\n     * @param dir The `FormControlName` directive instance.\n     */\n    addControl(dir) {\n        const ctrl = this.form.get(dir.path);\n        setUpControl(ctrl, dir, this.callSetDisabledState);\n        ctrl.updateValueAndValidity({ emitEvent: false });\n        this.directives.push(dir);\n        return ctrl;\n    }\n    /**\n     * @description\n     * Retrieves the `FormControl` instance from the provided `FormControlName` directive\n     *\n     * @param dir The `FormControlName` directive instance.\n     */\n    getControl(dir) {\n        return this.form.get(dir.path);\n    }\n    /**\n     * @description\n     * Removes the `FormControlName` instance from the internal list of directives\n     *\n     * @param dir The `FormControlName` directive instance.\n     */\n    removeControl(dir) {\n        cleanUpControl(dir.control || null, dir, /* validateControlPresenceOnChange */ false);\n        removeListItem$1(this.directives, dir);\n    }\n    /**\n     * Adds a new `FormGroupName` directive instance to the form.\n     *\n     * @param dir The `FormGroupName` directive instance.\n     */\n    addFormGroup(dir) {\n        this._setUpFormContainer(dir);\n    }\n    /**\n     * Performs the necessary cleanup when a `FormGroupName` directive instance is removed from the\n     * view.\n     *\n     * @param dir The `FormGroupName` directive instance.\n     */\n    removeFormGroup(dir) {\n        this._cleanUpFormContainer(dir);\n    }\n    /**\n     * @description\n     * Retrieves the `FormGroup` for a provided `FormGroupName` directive instance\n     *\n     * @param dir The `FormGroupName` directive instance.\n     */\n    getFormGroup(dir) {\n        return this.form.get(dir.path);\n    }\n    /**\n     * Performs the necessary setup when a `FormArrayName` directive instance is added to the view.\n     *\n     * @param dir The `FormArrayName` directive instance.\n     */\n    addFormArray(dir) {\n        this._setUpFormContainer(dir);\n    }\n    /**\n     * Performs the necessary cleanup when a `FormArrayName` directive instance is removed from the\n     * view.\n     *\n     * @param dir The `FormArrayName` directive instance.\n     */\n    removeFormArray(dir) {\n        this._cleanUpFormContainer(dir);\n    }\n    /**\n     * @description\n     * Retrieves the `FormArray` for a provided `FormArrayName` directive instance.\n     *\n     * @param dir The `FormArrayName` directive instance.\n     */\n    getFormArray(dir) {\n        return this.form.get(dir.path);\n    }\n    /**\n     * Sets the new value for the provided `FormControlName` directive.\n     *\n     * @param dir The `FormControlName` directive instance.\n     * @param value The new value for the directive's control.\n     */\n    updateModel(dir, value) {\n        const ctrl = this.form.get(dir.path);\n        ctrl.setValue(value);\n    }\n    /**\n     * @description\n     * Method called with the \"submit\" event is triggered on the form.\n     * Triggers the `ngSubmit` emitter to emit the \"submit\" event as its payload.\n     *\n     * @param $event The \"submit\" event object\n     */\n    onSubmit($event) {\n        this.submitted = true;\n        syncPendingControls(this.form, this.directives);\n        this.ngSubmit.emit($event);\n        // Forms with `method=\"dialog\"` have some special behavior that won't reload the page and that\n        // shouldn't be prevented. Note that we need to null check the `event` and the `target`, because\n        // some internal apps call this method directly with the wrong arguments.\n        return $event?.target?.method === 'dialog';\n    }\n    /**\n     * @description\n     * Method called when the \"reset\" event is triggered on the form.\n     */\n    onReset() {\n        this.resetForm();\n    }\n    /**\n     * @description\n     * Resets the form to an initial value and resets its submitted status.\n     *\n     * @param value The new value for the form.\n     */\n    resetForm(value = undefined) {\n        this.form.reset(value);\n        this.submitted = false;\n    }\n    /** @internal */\n    _updateDomValue() {\n        this.directives.forEach(dir => {\n            const oldCtrl = dir.control;\n            const newCtrl = this.form.get(dir.path);\n            if (oldCtrl !== newCtrl) {\n                // Note: the value of the `dir.control` may not be defined, for example when it's a first\n                // `FormControl` that is added to a `FormGroup` instance (via `addControl` call).\n                cleanUpControl(oldCtrl || null, dir);\n                // Check whether new control at the same location inside the corresponding `FormGroup` is an\n                // instance of `FormControl` and perform control setup only if that's the case.\n                // Note: we don't need to clear the list of directives (`this.directives`) here, it would be\n                // taken care of in the `removeControl` method invoked when corresponding `formControlName`\n                // directive instance is being removed (invoked from `FormControlName.ngOnDestroy`).\n                if (isFormControl(newCtrl)) {\n                    setUpControl(newCtrl, dir, this.callSetDisabledState);\n                    dir.control = newCtrl;\n                }\n            }\n        });\n        this.form._updateTreeValidity({ emitEvent: false });\n    }\n    _setUpFormContainer(dir) {\n        const ctrl = this.form.get(dir.path);\n        setUpFormContainer(ctrl, dir);\n        // NOTE: this operation looks unnecessary in case no new validators were added in\n        // `setUpFormContainer` call. Consider updating this code to match the logic in\n        // `_cleanUpFormContainer` function.\n        ctrl.updateValueAndValidity({ emitEvent: false });\n    }\n    _cleanUpFormContainer(dir) {\n        if (this.form) {\n            const ctrl = this.form.get(dir.path);\n            if (ctrl) {\n                const isControlUpdated = cleanUpFormContainer(ctrl, dir);\n                if (isControlUpdated) {\n                    // Run validity check only in case a control was updated (i.e. view validators were\n                    // removed) as removing view validators might cause validity to change.\n                    ctrl.updateValueAndValidity({ emitEvent: false });\n                }\n            }\n        }\n    }\n    _updateRegistrations() {\n        this.form._registerOnCollectionChange(this._onCollectionChange);\n        if (this._oldForm) {\n            this._oldForm._registerOnCollectionChange(() => { });\n        }\n    }\n    _updateValidators() {\n        setUpValidators(this.form, this);\n        if (this._oldForm) {\n            cleanUpValidators(this._oldForm, this);\n        }\n    }\n    _checkFormPresent() {\n        if (!this.form && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n            throw missingFormException();\n        }\n    }\n}\nFormGroupDirective.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormGroupDirective, deps: [{ token: NG_VALIDATORS, optional: true, self: true }, { token: NG_ASYNC_VALIDATORS, optional: true, self: true }, { token: CALL_SET_DISABLED_STATE, optional: true }], target: i0.ɵɵFactoryTarget.Directive });\nFormGroupDirective.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: FormGroupDirective, selector: \"[formGroup]\", inputs: { form: [\"formGroup\", \"form\"] }, outputs: { ngSubmit: \"ngSubmit\" }, host: { listeners: { \"submit\": \"onSubmit($event)\", \"reset\": \"onReset()\" } }, providers: [formDirectiveProvider], exportAs: [\"ngForm\"], usesInheritance: true, usesOnChanges: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormGroupDirective, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[formGroup]',\n                    providers: [formDirectiveProvider],\n                    host: { '(submit)': 'onSubmit($event)', '(reset)': 'onReset()' },\n                    exportAs: 'ngForm'\n                }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_VALIDATORS]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_ASYNC_VALIDATORS]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [CALL_SET_DISABLED_STATE]\n                }] }]; }, propDecorators: { form: [{\n                type: Input,\n                args: ['formGroup']\n            }], ngSubmit: [{\n                type: Output\n            }] } });\n\nconst formGroupNameProvider = {\n    provide: ControlContainer,\n    useExisting: forwardRef(() => FormGroupName)\n};\n/**\n * @description\n *\n * Syncs a nested `FormGroup` or `FormRecord` to a DOM element.\n *\n * This directive can only be used with a parent `FormGroupDirective`.\n *\n * It accepts the string name of the nested `FormGroup` or `FormRecord` to link, and\n * looks for a `FormGroup` or `FormRecord` registered with that name in the parent\n * `FormGroup` instance you passed into `FormGroupDirective`.\n *\n * Use nested form groups to validate a sub-group of a\n * form separately from the rest or to group the values of certain\n * controls into their own nested object.\n *\n * @see [Reactive Forms Guide](guide/reactive-forms)\n *\n * @usageNotes\n *\n * ### Access the group by name\n *\n * The following example uses the `AbstractControl.get` method to access the\n * associated `FormGroup`\n *\n * ```ts\n *   this.form.get('name');\n * ```\n *\n * ### Access individual controls in the group\n *\n * The following example uses the `AbstractControl.get` method to access\n * individual controls within the group using dot syntax.\n *\n * ```ts\n *   this.form.get('name.first');\n * ```\n *\n * ### Register a nested `FormGroup`.\n *\n * The following example registers a nested *name* `FormGroup` within an existing `FormGroup`,\n * and provides methods to retrieve the nested `FormGroup` and individual controls.\n *\n * {@example forms/ts/nestedFormGroup/nested_form_group_example.ts region='Component'}\n *\n * @ngModule ReactiveFormsModule\n * @publicApi\n */\nclass FormGroupName extends AbstractFormGroupDirective {\n    constructor(parent, validators, asyncValidators) {\n        super();\n        this._parent = parent;\n        this._setValidators(validators);\n        this._setAsyncValidators(asyncValidators);\n    }\n    /** @internal */\n    _checkParentType() {\n        if (_hasInvalidParent(this._parent) && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n            throw groupParentException();\n        }\n    }\n}\nFormGroupName.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormGroupName, deps: [{ token: ControlContainer, host: true, optional: true, skipSelf: true }, { token: NG_VALIDATORS, optional: true, self: true }, { token: NG_ASYNC_VALIDATORS, optional: true, self: true }], target: i0.ɵɵFactoryTarget.Directive });\nFormGroupName.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: FormGroupName, selector: \"[formGroupName]\", inputs: { name: [\"formGroupName\", \"name\"] }, providers: [formGroupNameProvider], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormGroupName, decorators: [{\n            type: Directive,\n            args: [{ selector: '[formGroupName]', providers: [formGroupNameProvider] }]\n        }], ctorParameters: function () { return [{ type: ControlContainer, decorators: [{\n                    type: Optional\n                }, {\n                    type: Host\n                }, {\n                    type: SkipSelf\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_VALIDATORS]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_ASYNC_VALIDATORS]\n                }] }]; }, propDecorators: { name: [{\n                type: Input,\n                args: ['formGroupName']\n            }] } });\nconst formArrayNameProvider = {\n    provide: ControlContainer,\n    useExisting: forwardRef(() => FormArrayName)\n};\n/**\n * @description\n *\n * Syncs a nested `FormArray` to a DOM element.\n *\n * This directive is designed to be used with a parent `FormGroupDirective` (selector:\n * `[formGroup]`).\n *\n * It accepts the string name of the nested `FormArray` you want to link, and\n * will look for a `FormArray` registered with that name in the parent\n * `FormGroup` instance you passed into `FormGroupDirective`.\n *\n * @see [Reactive Forms Guide](guide/reactive-forms)\n * @see `AbstractControl`\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example forms/ts/nestedFormArray/nested_form_array_example.ts region='Component'}\n *\n * @ngModule ReactiveFormsModule\n * @publicApi\n */\nclass FormArrayName extends ControlContainer {\n    constructor(parent, validators, asyncValidators) {\n        super();\n        this._parent = parent;\n        this._setValidators(validators);\n        this._setAsyncValidators(asyncValidators);\n    }\n    /**\n     * A lifecycle method called when the directive's inputs are initialized. For internal use only.\n     * @throws If the directive does not have a valid parent.\n     * @nodoc\n     */\n    ngOnInit() {\n        this._checkParentType();\n        this.formDirective.addFormArray(this);\n    }\n    /**\n     * A lifecycle method called before the directive's instance is destroyed. For internal use only.\n     * @nodoc\n     */\n    ngOnDestroy() {\n        if (this.formDirective) {\n            this.formDirective.removeFormArray(this);\n        }\n    }\n    /**\n     * @description\n     * The `FormArray` bound to this directive.\n     */\n    get control() {\n        return this.formDirective.getFormArray(this);\n    }\n    /**\n     * @description\n     * The top-level directive for this group if present, otherwise null.\n     */\n    get formDirective() {\n        return this._parent ? this._parent.formDirective : null;\n    }\n    /**\n     * @description\n     * Returns an array that represents the path from the top-level form to this control.\n     * Each index is the string name of the control on that level.\n     */\n    get path() {\n        return controlPath(this.name == null ? this.name : this.name.toString(), this._parent);\n    }\n    _checkParentType() {\n        if (_hasInvalidParent(this._parent) && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n            throw arrayParentException();\n        }\n    }\n}\nFormArrayName.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormArrayName, deps: [{ token: ControlContainer, host: true, optional: true, skipSelf: true }, { token: NG_VALIDATORS, optional: true, self: true }, { token: NG_ASYNC_VALIDATORS, optional: true, self: true }], target: i0.ɵɵFactoryTarget.Directive });\nFormArrayName.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: FormArrayName, selector: \"[formArrayName]\", inputs: { name: [\"formArrayName\", \"name\"] }, providers: [formArrayNameProvider], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormArrayName, decorators: [{\n            type: Directive,\n            args: [{ selector: '[formArrayName]', providers: [formArrayNameProvider] }]\n        }], ctorParameters: function () { return [{ type: ControlContainer, decorators: [{\n                    type: Optional\n                }, {\n                    type: Host\n                }, {\n                    type: SkipSelf\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_VALIDATORS]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_ASYNC_VALIDATORS]\n                }] }]; }, propDecorators: { name: [{\n                type: Input,\n                args: ['formArrayName']\n            }] } });\nfunction _hasInvalidParent(parent) {\n    return !(parent instanceof FormGroupName) && !(parent instanceof FormGroupDirective) &&\n        !(parent instanceof FormArrayName);\n}\n\nconst controlNameBinding = {\n    provide: NgControl,\n    useExisting: forwardRef(() => FormControlName)\n};\n/**\n * @description\n * Syncs a `FormControl` in an existing `FormGroup` to a form control\n * element by name.\n *\n * @see [Reactive Forms Guide](guide/reactive-forms)\n * @see `FormControl`\n * @see `AbstractControl`\n *\n * @usageNotes\n *\n * ### Register `FormControl` within a group\n *\n * The following example shows how to register multiple form controls within a form group\n * and set their value.\n *\n * {@example forms/ts/simpleFormGroup/simple_form_group_example.ts region='Component'}\n *\n * To see `formControlName` examples with different form control types, see:\n *\n * * Radio buttons: `RadioControlValueAccessor`\n * * Selects: `SelectControlValueAccessor`\n *\n * ### Use with ngModel is deprecated\n *\n * Support for using the `ngModel` input property and `ngModelChange` event with reactive\n * form directives has been deprecated in Angular v6 and is scheduled for removal in\n * a future version of Angular.\n *\n * For details, see [Deprecated features](guide/deprecations#ngmodel-with-reactive-forms).\n *\n * @ngModule ReactiveFormsModule\n * @publicApi\n */\nclass FormControlName extends NgControl {\n    /**\n     * @description\n     * Triggers a warning in dev mode that this input should not be used with reactive forms.\n     */\n    set isDisabled(isDisabled) {\n        if (typeof ngDevMode === 'undefined' || ngDevMode) {\n            console.warn(disabledAttrWarning);\n        }\n    }\n    constructor(parent, validators, asyncValidators, valueAccessors, _ngModelWarningConfig) {\n        super();\n        this._ngModelWarningConfig = _ngModelWarningConfig;\n        this._added = false;\n        /** @deprecated as of v6 */\n        this.update = new EventEmitter();\n        /**\n         * @description\n         * Instance property used to track whether an ngModel warning has been sent out for this\n         * particular FormControlName instance. Used to support warning config of \"always\".\n         *\n         * @internal\n         */\n        this._ngModelWarningSent = false;\n        this._parent = parent;\n        this._setValidators(validators);\n        this._setAsyncValidators(asyncValidators);\n        this.valueAccessor = selectValueAccessor(this, valueAccessors);\n    }\n    /** @nodoc */\n    ngOnChanges(changes) {\n        if (!this._added)\n            this._setUpControl();\n        if (isPropertyUpdated(changes, this.viewModel)) {\n            if (typeof ngDevMode === 'undefined' || ngDevMode) {\n                _ngModelWarning('formControlName', FormControlName, this, this._ngModelWarningConfig);\n            }\n            this.viewModel = this.model;\n            this.formDirective.updateModel(this, this.model);\n        }\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        if (this.formDirective) {\n            this.formDirective.removeControl(this);\n        }\n    }\n    /**\n     * @description\n     * Sets the new value for the view model and emits an `ngModelChange` event.\n     *\n     * @param newValue The new value for the view model.\n     */\n    viewToModelUpdate(newValue) {\n        this.viewModel = newValue;\n        this.update.emit(newValue);\n    }\n    /**\n     * @description\n     * Returns an array that represents the path from the top-level form to this control.\n     * Each index is the string name of the control on that level.\n     */\n    get path() {\n        return controlPath(this.name == null ? this.name : this.name.toString(), this._parent);\n    }\n    /**\n     * @description\n     * The top-level directive for this group if present, otherwise null.\n     */\n    get formDirective() {\n        return this._parent ? this._parent.formDirective : null;\n    }\n    _checkParentType() {\n        if (typeof ngDevMode === 'undefined' || ngDevMode) {\n            if (!(this._parent instanceof FormGroupName) &&\n                this._parent instanceof AbstractFormGroupDirective) {\n                throw ngModelGroupException();\n            }\n            else if (!(this._parent instanceof FormGroupName) &&\n                !(this._parent instanceof FormGroupDirective) &&\n                !(this._parent instanceof FormArrayName)) {\n                throw controlParentException();\n            }\n        }\n    }\n    _setUpControl() {\n        this._checkParentType();\n        this.control = this.formDirective.addControl(this);\n        this._added = true;\n    }\n}\n/**\n * @description\n * Static property used to track whether any ngModel warnings have been sent across\n * all instances of FormControlName. Used to support warning config of \"once\".\n *\n * @internal\n */\nFormControlName._ngModelWarningSentOnce = false;\nFormControlName.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormControlName, deps: [{ token: ControlContainer, host: true, optional: true, skipSelf: true }, { token: NG_VALIDATORS, optional: true, self: true }, { token: NG_ASYNC_VALIDATORS, optional: true, self: true }, { token: NG_VALUE_ACCESSOR, optional: true, self: true }, { token: NG_MODEL_WITH_FORM_CONTROL_WARNING, optional: true }], target: i0.ɵɵFactoryTarget.Directive });\nFormControlName.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: FormControlName, selector: \"[formControlName]\", inputs: { name: [\"formControlName\", \"name\"], isDisabled: [\"disabled\", \"isDisabled\"], model: [\"ngModel\", \"model\"] }, outputs: { update: \"ngModelChange\" }, providers: [controlNameBinding], usesInheritance: true, usesOnChanges: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormControlName, decorators: [{\n            type: Directive,\n            args: [{ selector: '[formControlName]', providers: [controlNameBinding] }]\n        }], ctorParameters: function () { return [{ type: ControlContainer, decorators: [{\n                    type: Optional\n                }, {\n                    type: Host\n                }, {\n                    type: SkipSelf\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_VALIDATORS]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_ASYNC_VALIDATORS]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Self\n                }, {\n                    type: Inject,\n                    args: [NG_VALUE_ACCESSOR]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [NG_MODEL_WITH_FORM_CONTROL_WARNING]\n                }] }]; }, propDecorators: { name: [{\n                type: Input,\n                args: ['formControlName']\n            }], isDisabled: [{\n                type: Input,\n                args: ['disabled']\n            }], model: [{\n                type: Input,\n                args: ['ngModel']\n            }], update: [{\n                type: Output,\n                args: ['ngModelChange']\n            }] } });\n\nconst SELECT_VALUE_ACCESSOR = {\n    provide: NG_VALUE_ACCESSOR,\n    useExisting: forwardRef(() => SelectControlValueAccessor),\n    multi: true\n};\nfunction _buildValueString$1(id, value) {\n    if (id == null)\n        return `${value}`;\n    if (value && typeof value === 'object')\n        value = 'Object';\n    return `${id}: ${value}`.slice(0, 50);\n}\nfunction _extractId$1(valueString) {\n    return valueString.split(':')[0];\n}\n/**\n * @description\n * The `ControlValueAccessor` for writing select control values and listening to select control\n * changes. The value accessor is used by the `FormControlDirective`, `FormControlName`, and\n * `NgModel` directives.\n *\n * @usageNotes\n *\n * ### Using select controls in a reactive form\n *\n * The following examples show how to use a select control in a reactive form.\n *\n * {@example forms/ts/reactiveSelectControl/reactive_select_control_example.ts region='Component'}\n *\n * ### Using select controls in a template-driven form\n *\n * To use a select in a template-driven form, simply add an `ngModel` and a `name`\n * attribute to the main `<select>` tag.\n *\n * {@example forms/ts/selectControl/select_control_example.ts region='Component'}\n *\n * ### Customizing option selection\n *\n * Angular uses object identity to select option. It's possible for the identities of items\n * to change while the data does not. This can happen, for example, if the items are produced\n * from an RPC to the server, and that RPC is re-run. Even if the data hasn't changed, the\n * second response will produce objects with different identities.\n *\n * To customize the default option comparison algorithm, `<select>` supports `compareWith` input.\n * `compareWith` takes a **function** which has two arguments: `option1` and `option2`.\n * If `compareWith` is given, Angular selects option by the return value of the function.\n *\n * ```ts\n * const selectedCountriesControl = new FormControl();\n * ```\n *\n * ```\n * <select [compareWith]=\"compareFn\"  [formControl]=\"selectedCountriesControl\">\n *     <option *ngFor=\"let country of countries\" [ngValue]=\"country\">\n *         {{country.name}}\n *     </option>\n * </select>\n *\n * compareFn(c1: Country, c2: Country): boolean {\n *     return c1 && c2 ? c1.id === c2.id : c1 === c2;\n * }\n * ```\n *\n * **Note:** We listen to the 'change' event because 'input' events aren't fired\n * for selects in IE, see:\n * https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/input_event#browser_compatibility\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass SelectControlValueAccessor extends BuiltInControlValueAccessor {\n    constructor() {\n        super(...arguments);\n        /** @internal */\n        this._optionMap = new Map();\n        /** @internal */\n        this._idCounter = 0;\n        this._compareWith = Object.is;\n    }\n    /**\n     * @description\n     * Tracks the option comparison algorithm for tracking identities when\n     * checking for changes.\n     */\n    set compareWith(fn) {\n        if (typeof fn !== 'function' && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n            throw new ɵRuntimeError(1201 /* RuntimeErrorCode.COMPAREWITH_NOT_A_FN */, `compareWith must be a function, but received ${JSON.stringify(fn)}`);\n        }\n        this._compareWith = fn;\n    }\n    /**\n     * Sets the \"value\" property on the select element.\n     * @nodoc\n     */\n    writeValue(value) {\n        this.value = value;\n        const id = this._getOptionId(value);\n        const valueString = _buildValueString$1(id, value);\n        this.setProperty('value', valueString);\n    }\n    /**\n     * Registers a function called when the control value changes.\n     * @nodoc\n     */\n    registerOnChange(fn) {\n        this.onChange = (valueString) => {\n            this.value = this._getOptionValue(valueString);\n            fn(this.value);\n        };\n    }\n    /** @internal */\n    _registerOption() {\n        return (this._idCounter++).toString();\n    }\n    /** @internal */\n    _getOptionId(value) {\n        for (const id of Array.from(this._optionMap.keys())) {\n            if (this._compareWith(this._optionMap.get(id), value))\n                return id;\n        }\n        return null;\n    }\n    /** @internal */\n    _getOptionValue(valueString) {\n        const id = _extractId$1(valueString);\n        return this._optionMap.has(id) ? this._optionMap.get(id) : valueString;\n    }\n}\nSelectControlValueAccessor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: SelectControlValueAccessor, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nSelectControlValueAccessor.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: SelectControlValueAccessor, selector: \"select:not([multiple])[formControlName],select:not([multiple])[formControl],select:not([multiple])[ngModel]\", inputs: { compareWith: \"compareWith\" }, host: { listeners: { \"change\": \"onChange($event.target.value)\", \"blur\": \"onTouched()\" } }, providers: [SELECT_VALUE_ACCESSOR], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: SelectControlValueAccessor, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: 'select:not([multiple])[formControlName],select:not([multiple])[formControl],select:not([multiple])[ngModel]',\n                    host: { '(change)': 'onChange($event.target.value)', '(blur)': 'onTouched()' },\n                    providers: [SELECT_VALUE_ACCESSOR]\n                }]\n        }], propDecorators: { compareWith: [{\n                type: Input\n            }] } });\n/**\n * @description\n * Marks `<option>` as dynamic, so Angular can be notified when options change.\n *\n * @see `SelectControlValueAccessor`\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass NgSelectOption {\n    constructor(_element, _renderer, _select) {\n        this._element = _element;\n        this._renderer = _renderer;\n        this._select = _select;\n        if (this._select)\n            this.id = this._select._registerOption();\n    }\n    /**\n     * @description\n     * Tracks the value bound to the option element. Unlike the value binding,\n     * ngValue supports binding to objects.\n     */\n    set ngValue(value) {\n        if (this._select == null)\n            return;\n        this._select._optionMap.set(this.id, value);\n        this._setElementValue(_buildValueString$1(this.id, value));\n        this._select.writeValue(this._select.value);\n    }\n    /**\n     * @description\n     * Tracks simple string values bound to the option element.\n     * For objects, use the `ngValue` input binding.\n     */\n    set value(value) {\n        this._setElementValue(value);\n        if (this._select)\n            this._select.writeValue(this._select.value);\n    }\n    /** @internal */\n    _setElementValue(value) {\n        this._renderer.setProperty(this._element.nativeElement, 'value', value);\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        if (this._select) {\n            this._select._optionMap.delete(this.id);\n            this._select.writeValue(this._select.value);\n        }\n    }\n}\nNgSelectOption.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgSelectOption, deps: [{ token: i0.ElementRef }, { token: i0.Renderer2 }, { token: SelectControlValueAccessor, host: true, optional: true }], target: i0.ɵɵFactoryTarget.Directive });\nNgSelectOption.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: NgSelectOption, selector: \"option\", inputs: { ngValue: \"ngValue\", value: \"value\" }, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NgSelectOption, decorators: [{\n            type: Directive,\n            args: [{ selector: 'option' }]\n        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.Renderer2 }, { type: SelectControlValueAccessor, decorators: [{\n                    type: Optional\n                }, {\n                    type: Host\n                }] }]; }, propDecorators: { ngValue: [{\n                type: Input,\n                args: ['ngValue']\n            }], value: [{\n                type: Input,\n                args: ['value']\n            }] } });\n\nconst SELECT_MULTIPLE_VALUE_ACCESSOR = {\n    provide: NG_VALUE_ACCESSOR,\n    useExisting: forwardRef(() => SelectMultipleControlValueAccessor),\n    multi: true\n};\nfunction _buildValueString(id, value) {\n    if (id == null)\n        return `${value}`;\n    if (typeof value === 'string')\n        value = `'${value}'`;\n    if (value && typeof value === 'object')\n        value = 'Object';\n    return `${id}: ${value}`.slice(0, 50);\n}\nfunction _extractId(valueString) {\n    return valueString.split(':')[0];\n}\n/** Mock interface for HTMLCollection */\nclass HTMLCollection {\n}\n/**\n * @description\n * The `ControlValueAccessor` for writing multi-select control values and listening to multi-select\n * control changes. The value accessor is used by the `FormControlDirective`, `FormControlName`, and\n * `NgModel` directives.\n *\n * @see `SelectControlValueAccessor`\n *\n * @usageNotes\n *\n * ### Using a multi-select control\n *\n * The follow example shows you how to use a multi-select control with a reactive form.\n *\n * ```ts\n * const countryControl = new FormControl();\n * ```\n *\n * ```\n * <select multiple name=\"countries\" [formControl]=\"countryControl\">\n *   <option *ngFor=\"let country of countries\" [ngValue]=\"country\">\n *     {{ country.name }}\n *   </option>\n * </select>\n * ```\n *\n * ### Customizing option selection\n *\n * To customize the default option comparison algorithm, `<select>` supports `compareWith` input.\n * See the `SelectControlValueAccessor` for usage.\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass SelectMultipleControlValueAccessor extends BuiltInControlValueAccessor {\n    constructor() {\n        super(...arguments);\n        /** @internal */\n        this._optionMap = new Map();\n        /** @internal */\n        this._idCounter = 0;\n        this._compareWith = Object.is;\n    }\n    /**\n     * @description\n     * Tracks the option comparison algorithm for tracking identities when\n     * checking for changes.\n     */\n    set compareWith(fn) {\n        if (typeof fn !== 'function' && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n            throw new ɵRuntimeError(1201 /* RuntimeErrorCode.COMPAREWITH_NOT_A_FN */, `compareWith must be a function, but received ${JSON.stringify(fn)}`);\n        }\n        this._compareWith = fn;\n    }\n    /**\n     * Sets the \"value\" property on one or of more of the select's options.\n     * @nodoc\n     */\n    writeValue(value) {\n        this.value = value;\n        let optionSelectedStateSetter;\n        if (Array.isArray(value)) {\n            // convert values to ids\n            const ids = value.map((v) => this._getOptionId(v));\n            optionSelectedStateSetter = (opt, o) => {\n                opt._setSelected(ids.indexOf(o.toString()) > -1);\n            };\n        }\n        else {\n            optionSelectedStateSetter = (opt, o) => {\n                opt._setSelected(false);\n            };\n        }\n        this._optionMap.forEach(optionSelectedStateSetter);\n    }\n    /**\n     * Registers a function called when the control value changes\n     * and writes an array of the selected options.\n     * @nodoc\n     */\n    registerOnChange(fn) {\n        this.onChange = (element) => {\n            const selected = [];\n            const selectedOptions = element.selectedOptions;\n            if (selectedOptions !== undefined) {\n                const options = selectedOptions;\n                for (let i = 0; i < options.length; i++) {\n                    const opt = options[i];\n                    const val = this._getOptionValue(opt.value);\n                    selected.push(val);\n                }\n            }\n            // Degrade to use `options` when `selectedOptions` property is not available.\n            // Note: the `selectedOptions` is available in all supported browsers, but the Domino lib\n            // doesn't have it currently, see https://github.com/fgnass/domino/issues/177.\n            else {\n                const options = element.options;\n                for (let i = 0; i < options.length; i++) {\n                    const opt = options[i];\n                    if (opt.selected) {\n                        const val = this._getOptionValue(opt.value);\n                        selected.push(val);\n                    }\n                }\n            }\n            this.value = selected;\n            fn(selected);\n        };\n    }\n    /** @internal */\n    _registerOption(value) {\n        const id = (this._idCounter++).toString();\n        this._optionMap.set(id, value);\n        return id;\n    }\n    /** @internal */\n    _getOptionId(value) {\n        for (const id of Array.from(this._optionMap.keys())) {\n            if (this._compareWith(this._optionMap.get(id)._value, value))\n                return id;\n        }\n        return null;\n    }\n    /** @internal */\n    _getOptionValue(valueString) {\n        const id = _extractId(valueString);\n        return this._optionMap.has(id) ? this._optionMap.get(id)._value : valueString;\n    }\n}\nSelectMultipleControlValueAccessor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: SelectMultipleControlValueAccessor, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nSelectMultipleControlValueAccessor.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: SelectMultipleControlValueAccessor, selector: \"select[multiple][formControlName],select[multiple][formControl],select[multiple][ngModel]\", inputs: { compareWith: \"compareWith\" }, host: { listeners: { \"change\": \"onChange($event.target)\", \"blur\": \"onTouched()\" } }, providers: [SELECT_MULTIPLE_VALUE_ACCESSOR], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: SelectMultipleControlValueAccessor, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: 'select[multiple][formControlName],select[multiple][formControl],select[multiple][ngModel]',\n                    host: { '(change)': 'onChange($event.target)', '(blur)': 'onTouched()' },\n                    providers: [SELECT_MULTIPLE_VALUE_ACCESSOR]\n                }]\n        }], propDecorators: { compareWith: [{\n                type: Input\n            }] } });\n/**\n * @description\n * Marks `<option>` as dynamic, so Angular can be notified when options change.\n *\n * @see `SelectMultipleControlValueAccessor`\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass ɵNgSelectMultipleOption {\n    constructor(_element, _renderer, _select) {\n        this._element = _element;\n        this._renderer = _renderer;\n        this._select = _select;\n        if (this._select) {\n            this.id = this._select._registerOption(this);\n        }\n    }\n    /**\n     * @description\n     * Tracks the value bound to the option element. Unlike the value binding,\n     * ngValue supports binding to objects.\n     */\n    set ngValue(value) {\n        if (this._select == null)\n            return;\n        this._value = value;\n        this._setElementValue(_buildValueString(this.id, value));\n        this._select.writeValue(this._select.value);\n    }\n    /**\n     * @description\n     * Tracks simple string values bound to the option element.\n     * For objects, use the `ngValue` input binding.\n     */\n    set value(value) {\n        if (this._select) {\n            this._value = value;\n            this._setElementValue(_buildValueString(this.id, value));\n            this._select.writeValue(this._select.value);\n        }\n        else {\n            this._setElementValue(value);\n        }\n    }\n    /** @internal */\n    _setElementValue(value) {\n        this._renderer.setProperty(this._element.nativeElement, 'value', value);\n    }\n    /** @internal */\n    _setSelected(selected) {\n        this._renderer.setProperty(this._element.nativeElement, 'selected', selected);\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        if (this._select) {\n            this._select._optionMap.delete(this.id);\n            this._select.writeValue(this._select.value);\n        }\n    }\n}\nɵNgSelectMultipleOption.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: ɵNgSelectMultipleOption, deps: [{ token: i0.ElementRef }, { token: i0.Renderer2 }, { token: SelectMultipleControlValueAccessor, host: true, optional: true }], target: i0.ɵɵFactoryTarget.Directive });\nɵNgSelectMultipleOption.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: ɵNgSelectMultipleOption, selector: \"option\", inputs: { ngValue: \"ngValue\", value: \"value\" }, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: ɵNgSelectMultipleOption, decorators: [{\n            type: Directive,\n            args: [{ selector: 'option' }]\n        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.Renderer2 }, { type: SelectMultipleControlValueAccessor, decorators: [{\n                    type: Optional\n                }, {\n                    type: Host\n                }] }]; }, propDecorators: { ngValue: [{\n                type: Input,\n                args: ['ngValue']\n            }], value: [{\n                type: Input,\n                args: ['value']\n            }] } });\n\n/**\n * Method that updates string to integer if not already a number\n *\n * @param value The value to convert to integer.\n * @returns value of parameter converted to number or integer.\n */\nfunction toInteger(value) {\n    return typeof value === 'number' ? value : parseInt(value, 10);\n}\n/**\n * Method that ensures that provided value is a float (and converts it to float if needed).\n *\n * @param value The value to convert to float.\n * @returns value of parameter converted to number or float.\n */\nfunction toFloat(value) {\n    return typeof value === 'number' ? value : parseFloat(value);\n}\n/**\n * A base class for Validator-based Directives. The class contains common logic shared across such\n * Directives.\n *\n * For internal use only, this class is not intended for use outside of the Forms package.\n */\nclass AbstractValidatorDirective {\n    constructor() {\n        this._validator = nullValidator;\n    }\n    /** @nodoc */\n    ngOnChanges(changes) {\n        if (this.inputName in changes) {\n            const input = this.normalizeInput(changes[this.inputName].currentValue);\n            this._enabled = this.enabled(input);\n            this._validator = this._enabled ? this.createValidator(input) : nullValidator;\n            if (this._onChange) {\n                this._onChange();\n            }\n        }\n    }\n    /** @nodoc */\n    validate(control) {\n        return this._validator(control);\n    }\n    /** @nodoc */\n    registerOnValidatorChange(fn) {\n        this._onChange = fn;\n    }\n    /**\n     * @description\n     * Determines whether this validator should be active or not based on an input.\n     * Base class implementation checks whether an input is defined (if the value is different from\n     * `null` and `undefined`). Validator classes that extend this base class can override this\n     * function with the logic specific to a particular validator directive.\n     */\n    enabled(input) {\n        return input != null /* both `null` and `undefined` */;\n    }\n}\nAbstractValidatorDirective.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: AbstractValidatorDirective, deps: [], target: i0.ɵɵFactoryTarget.Directive });\nAbstractValidatorDirective.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: AbstractValidatorDirective, usesOnChanges: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: AbstractValidatorDirective, decorators: [{\n            type: Directive\n        }] });\n/**\n * @description\n * Provider which adds `MaxValidator` to the `NG_VALIDATORS` multi-provider list.\n */\nconst MAX_VALIDATOR = {\n    provide: NG_VALIDATORS,\n    useExisting: forwardRef(() => MaxValidator),\n    multi: true\n};\n/**\n * A directive which installs the {@link MaxValidator} for any `formControlName`,\n * `formControl`, or control with `ngModel` that also has a `max` attribute.\n *\n * @see [Form Validation](guide/form-validation)\n *\n * @usageNotes\n *\n * ### Adding a max validator\n *\n * The following example shows how to add a max validator to an input attached to an\n * ngModel binding.\n *\n * ```html\n * <input type=\"number\" ngModel max=\"4\">\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass MaxValidator extends AbstractValidatorDirective {\n    constructor() {\n        super(...arguments);\n        /** @internal */\n        this.inputName = 'max';\n        /** @internal */\n        this.normalizeInput = (input) => toFloat(input);\n        /** @internal */\n        this.createValidator = (max) => maxValidator(max);\n    }\n}\nMaxValidator.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: MaxValidator, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nMaxValidator.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: MaxValidator, selector: \"input[type=number][max][formControlName],input[type=number][max][formControl],input[type=number][max][ngModel]\", inputs: { max: \"max\" }, host: { properties: { \"attr.max\": \"_enabled ? max : null\" } }, providers: [MAX_VALIDATOR], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: MaxValidator, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: 'input[type=number][max][formControlName],input[type=number][max][formControl],input[type=number][max][ngModel]',\n                    providers: [MAX_VALIDATOR],\n                    host: { '[attr.max]': '_enabled ? max : null' }\n                }]\n        }], propDecorators: { max: [{\n                type: Input\n            }] } });\n/**\n * @description\n * Provider which adds `MinValidator` to the `NG_VALIDATORS` multi-provider list.\n */\nconst MIN_VALIDATOR = {\n    provide: NG_VALIDATORS,\n    useExisting: forwardRef(() => MinValidator),\n    multi: true\n};\n/**\n * A directive which installs the {@link MinValidator} for any `formControlName`,\n * `formControl`, or control with `ngModel` that also has a `min` attribute.\n *\n * @see [Form Validation](guide/form-validation)\n *\n * @usageNotes\n *\n * ### Adding a min validator\n *\n * The following example shows how to add a min validator to an input attached to an\n * ngModel binding.\n *\n * ```html\n * <input type=\"number\" ngModel min=\"4\">\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass MinValidator extends AbstractValidatorDirective {\n    constructor() {\n        super(...arguments);\n        /** @internal */\n        this.inputName = 'min';\n        /** @internal */\n        this.normalizeInput = (input) => toFloat(input);\n        /** @internal */\n        this.createValidator = (min) => minValidator(min);\n    }\n}\nMinValidator.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: MinValidator, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nMinValidator.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: MinValidator, selector: \"input[type=number][min][formControlName],input[type=number][min][formControl],input[type=number][min][ngModel]\", inputs: { min: \"min\" }, host: { properties: { \"attr.min\": \"_enabled ? min : null\" } }, providers: [MIN_VALIDATOR], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: MinValidator, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: 'input[type=number][min][formControlName],input[type=number][min][formControl],input[type=number][min][ngModel]',\n                    providers: [MIN_VALIDATOR],\n                    host: { '[attr.min]': '_enabled ? min : null' }\n                }]\n        }], propDecorators: { min: [{\n                type: Input\n            }] } });\n/**\n * @description\n * Provider which adds `RequiredValidator` to the `NG_VALIDATORS` multi-provider list.\n */\nconst REQUIRED_VALIDATOR = {\n    provide: NG_VALIDATORS,\n    useExisting: forwardRef(() => RequiredValidator),\n    multi: true\n};\n/**\n * @description\n * Provider which adds `CheckboxRequiredValidator` to the `NG_VALIDATORS` multi-provider list.\n */\nconst CHECKBOX_REQUIRED_VALIDATOR = {\n    provide: NG_VALIDATORS,\n    useExisting: forwardRef(() => CheckboxRequiredValidator),\n    multi: true\n};\n/**\n * @description\n * A directive that adds the `required` validator to any controls marked with the\n * `required` attribute. The directive is provided with the `NG_VALIDATORS` multi-provider list.\n *\n * @see [Form Validation](guide/form-validation)\n *\n * @usageNotes\n *\n * ### Adding a required validator using template-driven forms\n *\n * ```\n * <input name=\"fullName\" ngModel required>\n * ```\n *\n * @ngModule FormsModule\n * @ngModule ReactiveFormsModule\n * @publicApi\n */\nclass RequiredValidator extends AbstractValidatorDirective {\n    constructor() {\n        super(...arguments);\n        /** @internal */\n        this.inputName = 'required';\n        /** @internal */\n        this.normalizeInput = ɵcoerceToBoolean;\n        /** @internal */\n        this.createValidator = (input) => requiredValidator;\n    }\n    /** @nodoc */\n    enabled(input) {\n        return input;\n    }\n}\nRequiredValidator.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: RequiredValidator, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nRequiredValidator.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: RequiredValidator, selector: \":not([type=checkbox])[required][formControlName],:not([type=checkbox])[required][formControl],:not([type=checkbox])[required][ngModel]\", inputs: { required: \"required\" }, host: { properties: { \"attr.required\": \"_enabled ? \\\"\\\" : null\" } }, providers: [REQUIRED_VALIDATOR], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: RequiredValidator, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: ':not([type=checkbox])[required][formControlName],:not([type=checkbox])[required][formControl],:not([type=checkbox])[required][ngModel]',\n                    providers: [REQUIRED_VALIDATOR],\n                    host: { '[attr.required]': '_enabled ? \"\" : null' }\n                }]\n        }], propDecorators: { required: [{\n                type: Input\n            }] } });\n/**\n * A Directive that adds the `required` validator to checkbox controls marked with the\n * `required` attribute. The directive is provided with the `NG_VALIDATORS` multi-provider list.\n *\n * @see [Form Validation](guide/form-validation)\n *\n * @usageNotes\n *\n * ### Adding a required checkbox validator using template-driven forms\n *\n * The following example shows how to add a checkbox required validator to an input attached to an\n * ngModel binding.\n *\n * ```\n * <input type=\"checkbox\" name=\"active\" ngModel required>\n * ```\n *\n * @publicApi\n * @ngModule FormsModule\n * @ngModule ReactiveFormsModule\n */\nclass CheckboxRequiredValidator extends RequiredValidator {\n    constructor() {\n        super(...arguments);\n        /** @internal */\n        this.createValidator = (input) => requiredTrueValidator;\n    }\n}\nCheckboxRequiredValidator.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: CheckboxRequiredValidator, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nCheckboxRequiredValidator.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: CheckboxRequiredValidator, selector: \"input[type=checkbox][required][formControlName],input[type=checkbox][required][formControl],input[type=checkbox][required][ngModel]\", host: { properties: { \"attr.required\": \"_enabled ? \\\"\\\" : null\" } }, providers: [CHECKBOX_REQUIRED_VALIDATOR], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: CheckboxRequiredValidator, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: 'input[type=checkbox][required][formControlName],input[type=checkbox][required][formControl],input[type=checkbox][required][ngModel]',\n                    providers: [CHECKBOX_REQUIRED_VALIDATOR],\n                    host: { '[attr.required]': '_enabled ? \"\" : null' }\n                }]\n        }] });\n/**\n * @description\n * Provider which adds `EmailValidator` to the `NG_VALIDATORS` multi-provider list.\n */\nconst EMAIL_VALIDATOR = {\n    provide: NG_VALIDATORS,\n    useExisting: forwardRef(() => EmailValidator),\n    multi: true\n};\n/**\n * A directive that adds the `email` validator to controls marked with the\n * `email` attribute. The directive is provided with the `NG_VALIDATORS` multi-provider list.\n *\n * The email validation is based on the WHATWG HTML specification with some enhancements to\n * incorporate more RFC rules. More information can be found on the [Validators.email\n * page](api/forms/Validators#email).\n *\n * @see [Form Validation](guide/form-validation)\n *\n * @usageNotes\n *\n * ### Adding an email validator\n *\n * The following example shows how to add an email validator to an input attached to an ngModel\n * binding.\n *\n * ```\n * <input type=\"email\" name=\"email\" ngModel email>\n * <input type=\"email\" name=\"email\" ngModel email=\"true\">\n * <input type=\"email\" name=\"email\" ngModel [email]=\"true\">\n * ```\n *\n * @publicApi\n * @ngModule FormsModule\n * @ngModule ReactiveFormsModule\n */\nclass EmailValidator extends AbstractValidatorDirective {\n    constructor() {\n        super(...arguments);\n        /** @internal */\n        this.inputName = 'email';\n        /** @internal */\n        this.normalizeInput = ɵcoerceToBoolean;\n        /** @internal */\n        this.createValidator = (input) => emailValidator;\n    }\n    /** @nodoc */\n    enabled(input) {\n        return input;\n    }\n}\nEmailValidator.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: EmailValidator, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nEmailValidator.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: EmailValidator, selector: \"[email][formControlName],[email][formControl],[email][ngModel]\", inputs: { email: \"email\" }, providers: [EMAIL_VALIDATOR], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: EmailValidator, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[email][formControlName],[email][formControl],[email][ngModel]',\n                    providers: [EMAIL_VALIDATOR]\n                }]\n        }], propDecorators: { email: [{\n                type: Input\n            }] } });\n/**\n * @description\n * Provider which adds `MinLengthValidator` to the `NG_VALIDATORS` multi-provider list.\n */\nconst MIN_LENGTH_VALIDATOR = {\n    provide: NG_VALIDATORS,\n    useExisting: forwardRef(() => MinLengthValidator),\n    multi: true\n};\n/**\n * A directive that adds minimum length validation to controls marked with the\n * `minlength` attribute. The directive is provided with the `NG_VALIDATORS` multi-provider list.\n *\n * @see [Form Validation](guide/form-validation)\n *\n * @usageNotes\n *\n * ### Adding a minimum length validator\n *\n * The following example shows how to add a minimum length validator to an input attached to an\n * ngModel binding.\n *\n * ```html\n * <input name=\"firstName\" ngModel minlength=\"4\">\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass MinLengthValidator extends AbstractValidatorDirective {\n    constructor() {\n        super(...arguments);\n        /** @internal */\n        this.inputName = 'minlength';\n        /** @internal */\n        this.normalizeInput = (input) => toInteger(input);\n        /** @internal */\n        this.createValidator = (minlength) => minLengthValidator(minlength);\n    }\n}\nMinLengthValidator.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: MinLengthValidator, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nMinLengthValidator.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: MinLengthValidator, selector: \"[minlength][formControlName],[minlength][formControl],[minlength][ngModel]\", inputs: { minlength: \"minlength\" }, host: { properties: { \"attr.minlength\": \"_enabled ? minlength : null\" } }, providers: [MIN_LENGTH_VALIDATOR], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: MinLengthValidator, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[minlength][formControlName],[minlength][formControl],[minlength][ngModel]',\n                    providers: [MIN_LENGTH_VALIDATOR],\n                    host: { '[attr.minlength]': '_enabled ? minlength : null' }\n                }]\n        }], propDecorators: { minlength: [{\n                type: Input\n            }] } });\n/**\n * @description\n * Provider which adds `MaxLengthValidator` to the `NG_VALIDATORS` multi-provider list.\n */\nconst MAX_LENGTH_VALIDATOR = {\n    provide: NG_VALIDATORS,\n    useExisting: forwardRef(() => MaxLengthValidator),\n    multi: true\n};\n/**\n * A directive that adds max length validation to controls marked with the\n * `maxlength` attribute. The directive is provided with the `NG_VALIDATORS` multi-provider list.\n *\n * @see [Form Validation](guide/form-validation)\n *\n * @usageNotes\n *\n * ### Adding a maximum length validator\n *\n * The following example shows how to add a maximum length validator to an input attached to an\n * ngModel binding.\n *\n * ```html\n * <input name=\"firstName\" ngModel maxlength=\"25\">\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass MaxLengthValidator extends AbstractValidatorDirective {\n    constructor() {\n        super(...arguments);\n        /** @internal */\n        this.inputName = 'maxlength';\n        /** @internal */\n        this.normalizeInput = (input) => toInteger(input);\n        /** @internal */\n        this.createValidator = (maxlength) => maxLengthValidator(maxlength);\n    }\n}\nMaxLengthValidator.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: MaxLengthValidator, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nMaxLengthValidator.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: MaxLengthValidator, selector: \"[maxlength][formControlName],[maxlength][formControl],[maxlength][ngModel]\", inputs: { maxlength: \"maxlength\" }, host: { properties: { \"attr.maxlength\": \"_enabled ? maxlength : null\" } }, providers: [MAX_LENGTH_VALIDATOR], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: MaxLengthValidator, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[maxlength][formControlName],[maxlength][formControl],[maxlength][ngModel]',\n                    providers: [MAX_LENGTH_VALIDATOR],\n                    host: { '[attr.maxlength]': '_enabled ? maxlength : null' }\n                }]\n        }], propDecorators: { maxlength: [{\n                type: Input\n            }] } });\n/**\n * @description\n * Provider which adds `PatternValidator` to the `NG_VALIDATORS` multi-provider list.\n */\nconst PATTERN_VALIDATOR = {\n    provide: NG_VALIDATORS,\n    useExisting: forwardRef(() => PatternValidator),\n    multi: true\n};\n/**\n * @description\n * A directive that adds regex pattern validation to controls marked with the\n * `pattern` attribute. The regex must match the entire control value.\n * The directive is provided with the `NG_VALIDATORS` multi-provider list.\n *\n * @see [Form Validation](guide/form-validation)\n *\n * @usageNotes\n *\n * ### Adding a pattern validator\n *\n * The following example shows how to add a pattern validator to an input attached to an\n * ngModel binding.\n *\n * ```html\n * <input name=\"firstName\" ngModel pattern=\"[a-zA-Z ]*\">\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\nclass PatternValidator extends AbstractValidatorDirective {\n    constructor() {\n        super(...arguments);\n        /** @internal */\n        this.inputName = 'pattern';\n        /** @internal */\n        this.normalizeInput = (input) => input;\n        /** @internal */\n        this.createValidator = (input) => patternValidator(input);\n    }\n}\nPatternValidator.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PatternValidator, deps: null, target: i0.ɵɵFactoryTarget.Directive });\nPatternValidator.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.10\", type: PatternValidator, selector: \"[pattern][formControlName],[pattern][formControl],[pattern][ngModel]\", inputs: { pattern: \"pattern\" }, host: { properties: { \"attr.pattern\": \"_enabled ? pattern : null\" } }, providers: [PATTERN_VALIDATOR], usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: PatternValidator, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[pattern][formControlName],[pattern][formControl],[pattern][ngModel]',\n                    providers: [PATTERN_VALIDATOR],\n                    host: { '[attr.pattern]': '_enabled ? pattern : null' }\n                }]\n        }], propDecorators: { pattern: [{\n                type: Input\n            }] } });\n\nconst SHARED_FORM_DIRECTIVES = [\n    ɵNgNoValidate,\n    NgSelectOption,\n    ɵNgSelectMultipleOption,\n    DefaultValueAccessor,\n    NumberValueAccessor,\n    RangeValueAccessor,\n    CheckboxControlValueAccessor,\n    SelectControlValueAccessor,\n    SelectMultipleControlValueAccessor,\n    RadioControlValueAccessor,\n    NgControlStatus,\n    NgControlStatusGroup,\n    RequiredValidator,\n    MinLengthValidator,\n    MaxLengthValidator,\n    PatternValidator,\n    CheckboxRequiredValidator,\n    EmailValidator,\n    MinValidator,\n    MaxValidator,\n];\nconst TEMPLATE_DRIVEN_DIRECTIVES = [NgModel, NgModelGroup, NgForm];\nconst REACTIVE_DRIVEN_DIRECTIVES = [FormControlDirective, FormGroupDirective, FormControlName, FormGroupName, FormArrayName];\n/**\n * Internal module used for sharing directives between FormsModule and ReactiveFormsModule\n */\nclass ɵInternalFormsSharedModule {\n}\nɵInternalFormsSharedModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: ɵInternalFormsSharedModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nɵInternalFormsSharedModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: ɵInternalFormsSharedModule, declarations: [ɵNgNoValidate,\n        NgSelectOption,\n        ɵNgSelectMultipleOption,\n        DefaultValueAccessor,\n        NumberValueAccessor,\n        RangeValueAccessor,\n        CheckboxControlValueAccessor,\n        SelectControlValueAccessor,\n        SelectMultipleControlValueAccessor,\n        RadioControlValueAccessor,\n        NgControlStatus,\n        NgControlStatusGroup,\n        RequiredValidator,\n        MinLengthValidator,\n        MaxLengthValidator,\n        PatternValidator,\n        CheckboxRequiredValidator,\n        EmailValidator,\n        MinValidator,\n        MaxValidator], imports: [RadioControlRegistryModule], exports: [ɵNgNoValidate,\n        NgSelectOption,\n        ɵNgSelectMultipleOption,\n        DefaultValueAccessor,\n        NumberValueAccessor,\n        RangeValueAccessor,\n        CheckboxControlValueAccessor,\n        SelectControlValueAccessor,\n        SelectMultipleControlValueAccessor,\n        RadioControlValueAccessor,\n        NgControlStatus,\n        NgControlStatusGroup,\n        RequiredValidator,\n        MinLengthValidator,\n        MaxLengthValidator,\n        PatternValidator,\n        CheckboxRequiredValidator,\n        EmailValidator,\n        MinValidator,\n        MaxValidator] });\nɵInternalFormsSharedModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: ɵInternalFormsSharedModule, imports: [RadioControlRegistryModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: ɵInternalFormsSharedModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    declarations: SHARED_FORM_DIRECTIVES,\n                    imports: [RadioControlRegistryModule],\n                    exports: SHARED_FORM_DIRECTIVES,\n                }]\n        }] });\n\n/**\n * Tracks the value and validity state of an array of `FormControl`,\n * `FormGroup` or `FormArray` instances.\n *\n * A `FormArray` aggregates the values of each child `FormControl` into an array.\n * It calculates its status by reducing the status values of its children. For example, if one of\n * the controls in a `FormArray` is invalid, the entire array becomes invalid.\n *\n * `FormArray` accepts one generic argument, which is the type of the controls inside.\n * If you need a heterogenous array, use {@link UntypedFormArray}.\n *\n * `FormArray` is one of the four fundamental building blocks used to define forms in Angular,\n * along with `FormControl`, `FormGroup`, and `FormRecord`.\n *\n * @usageNotes\n *\n * ### Create an array of form controls\n *\n * ```\n * const arr = new FormArray([\n *   new FormControl('Nancy', Validators.minLength(2)),\n *   new FormControl('Drew'),\n * ]);\n *\n * console.log(arr.value);   // ['Nancy', 'Drew']\n * console.log(arr.status);  // 'VALID'\n * ```\n *\n * ### Create a form array with array-level validators\n *\n * You include array-level validators and async validators. These come in handy\n * when you want to perform validation that considers the value of more than one child\n * control.\n *\n * The two types of validators are passed in separately as the second and third arg\n * respectively, or together as part of an options object.\n *\n * ```\n * const arr = new FormArray([\n *   new FormControl('Nancy'),\n *   new FormControl('Drew')\n * ], {validators: myValidator, asyncValidators: myAsyncValidator});\n * ```\n *\n * ### Set the updateOn property for all controls in a form array\n *\n * The options object is used to set a default value for each child\n * control's `updateOn` property. If you set `updateOn` to `'blur'` at the\n * array level, all child controls default to 'blur', unless the child\n * has explicitly specified a different `updateOn` value.\n *\n * ```ts\n * const arr = new FormArray([\n *    new FormControl()\n * ], {updateOn: 'blur'});\n * ```\n *\n * ### Adding or removing controls from a form array\n *\n * To change the controls in the array, use the `push`, `insert`, `removeAt` or `clear` methods\n * in `FormArray` itself. These methods ensure the controls are properly tracked in the\n * form's hierarchy. Do not modify the array of `AbstractControl`s used to instantiate\n * the `FormArray` directly, as that result in strange and unexpected behavior such\n * as broken change detection.\n *\n * @publicApi\n */\nclass FormArray extends AbstractControl {\n    /**\n     * Creates a new `FormArray` instance.\n     *\n     * @param controls An array of child controls. Each child control is given an index\n     * where it is registered.\n     *\n     * @param validatorOrOpts A synchronous validator function, or an array of\n     * such functions, or an `AbstractControlOptions` object that contains validation functions\n     * and a validation trigger.\n     *\n     * @param asyncValidator A single async validator or array of async validator functions\n     *\n     */\n    constructor(controls, validatorOrOpts, asyncValidator) {\n        super(pickValidators(validatorOrOpts), pickAsyncValidators(asyncValidator, validatorOrOpts));\n        this.controls = controls;\n        this._initObservables();\n        this._setUpdateStrategy(validatorOrOpts);\n        this._setUpControls();\n        this.updateValueAndValidity({\n            onlySelf: true,\n            // If `asyncValidator` is present, it will trigger control status change from `PENDING` to\n            // `VALID` or `INVALID`.\n            // The status should be broadcasted via the `statusChanges` observable, so we set `emitEvent`\n            // to `true` to allow that during the control creation process.\n            emitEvent: !!this.asyncValidator\n        });\n    }\n    /**\n     * Get the `AbstractControl` at the given `index` in the array.\n     *\n     * @param index Index in the array to retrieve the control. If `index` is negative, it will wrap\n     *     around from the back, and if index is greatly negative (less than `-length`), the result is\n     * undefined. This behavior is the same as `Array.at(index)`.\n     */\n    at(index) {\n        return this.controls[this._adjustIndex(index)];\n    }\n    /**\n     * Insert a new `AbstractControl` at the end of the array.\n     *\n     * @param control Form control to be inserted\n     * @param options Specifies whether this FormArray instance should emit events after a new\n     *     control is added.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges` observables emit events with the latest status and value when the control is\n     * inserted. When false, no events are emitted.\n     */\n    push(control, options = {}) {\n        this.controls.push(control);\n        this._registerControl(control);\n        this.updateValueAndValidity({ emitEvent: options.emitEvent });\n        this._onCollectionChange();\n    }\n    /**\n     * Insert a new `AbstractControl` at the given `index` in the array.\n     *\n     * @param index Index in the array to insert the control. If `index` is negative, wraps around\n     *     from the back. If `index` is greatly negative (less than `-length`), prepends to the array.\n     * This behavior is the same as `Array.splice(index, 0, control)`.\n     * @param control Form control to be inserted\n     * @param options Specifies whether this FormArray instance should emit events after a new\n     *     control is inserted.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges` observables emit events with the latest status and value when the control is\n     * inserted. When false, no events are emitted.\n     */\n    insert(index, control, options = {}) {\n        this.controls.splice(index, 0, control);\n        this._registerControl(control);\n        this.updateValueAndValidity({ emitEvent: options.emitEvent });\n    }\n    /**\n     * Remove the control at the given `index` in the array.\n     *\n     * @param index Index in the array to remove the control.  If `index` is negative, wraps around\n     *     from the back. If `index` is greatly negative (less than `-length`), removes the first\n     *     element. This behavior is the same as `Array.splice(index, 1)`.\n     * @param options Specifies whether this FormArray instance should emit events after a\n     *     control is removed.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges` observables emit events with the latest status and value when the control is\n     * removed. When false, no events are emitted.\n     */\n    removeAt(index, options = {}) {\n        // Adjust the index, then clamp it at no less than 0 to prevent undesired underflows.\n        let adjustedIndex = this._adjustIndex(index);\n        if (adjustedIndex < 0)\n            adjustedIndex = 0;\n        if (this.controls[adjustedIndex])\n            this.controls[adjustedIndex]._registerOnCollectionChange(() => { });\n        this.controls.splice(adjustedIndex, 1);\n        this.updateValueAndValidity({ emitEvent: options.emitEvent });\n    }\n    /**\n     * Replace an existing control.\n     *\n     * @param index Index in the array to replace the control. If `index` is negative, wraps around\n     *     from the back. If `index` is greatly negative (less than `-length`), replaces the first\n     *     element. This behavior is the same as `Array.splice(index, 1, control)`.\n     * @param control The `AbstractControl` control to replace the existing control\n     * @param options Specifies whether this FormArray instance should emit events after an\n     *     existing control is replaced with a new one.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges` observables emit events with the latest status and value when the control is\n     * replaced with a new one. When false, no events are emitted.\n     */\n    setControl(index, control, options = {}) {\n        // Adjust the index, then clamp it at no less than 0 to prevent undesired underflows.\n        let adjustedIndex = this._adjustIndex(index);\n        if (adjustedIndex < 0)\n            adjustedIndex = 0;\n        if (this.controls[adjustedIndex])\n            this.controls[adjustedIndex]._registerOnCollectionChange(() => { });\n        this.controls.splice(adjustedIndex, 1);\n        if (control) {\n            this.controls.splice(adjustedIndex, 0, control);\n            this._registerControl(control);\n        }\n        this.updateValueAndValidity({ emitEvent: options.emitEvent });\n        this._onCollectionChange();\n    }\n    /**\n     * Length of the control array.\n     */\n    get length() {\n        return this.controls.length;\n    }\n    /**\n     * Sets the value of the `FormArray`. It accepts an array that matches\n     * the structure of the control.\n     *\n     * This method performs strict checks, and throws an error if you try\n     * to set the value of a control that doesn't exist or if you exclude the\n     * value of a control.\n     *\n     * @usageNotes\n     * ### Set the values for the controls in the form array\n     *\n     * ```\n     * const arr = new FormArray([\n     *   new FormControl(),\n     *   new FormControl()\n     * ]);\n     * console.log(arr.value);   // [null, null]\n     *\n     * arr.setValue(['Nancy', 'Drew']);\n     * console.log(arr.value);   // ['Nancy', 'Drew']\n     * ```\n     *\n     * @param value Array of values for the controls\n     * @param options Configure options that determine how the control propagates changes and\n     * emits events after the value changes\n     *\n     * * `onlySelf`: When true, each change only affects this control, and not its parent. Default\n     * is false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control value is updated.\n     * When false, no events are emitted.\n     * The configuration options are passed to the {@link AbstractControl#updateValueAndValidity\n     * updateValueAndValidity} method.\n     */\n    setValue(value, options = {}) {\n        assertAllValuesPresent(this, false, value);\n        value.forEach((newValue, index) => {\n            assertControlPresent(this, false, index);\n            this.at(index).setValue(newValue, { onlySelf: true, emitEvent: options.emitEvent });\n        });\n        this.updateValueAndValidity(options);\n    }\n    /**\n     * Patches the value of the `FormArray`. It accepts an array that matches the\n     * structure of the control, and does its best to match the values to the correct\n     * controls in the group.\n     *\n     * It accepts both super-sets and sub-sets of the array without throwing an error.\n     *\n     * @usageNotes\n     * ### Patch the values for controls in a form array\n     *\n     * ```\n     * const arr = new FormArray([\n     *    new FormControl(),\n     *    new FormControl()\n     * ]);\n     * console.log(arr.value);   // [null, null]\n     *\n     * arr.patchValue(['Nancy']);\n     * console.log(arr.value);   // ['Nancy', null]\n     * ```\n     *\n     * @param value Array of latest values for the controls\n     * @param options Configure options that determine how the control propagates changes and\n     * emits events after the value changes\n     *\n     * * `onlySelf`: When true, each change only affects this control, and not its parent. Default\n     * is false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges` observables emit events with the latest status and value when the control\n     * value is updated. When false, no events are emitted. The configuration options are passed to\n     * the {@link AbstractControl#updateValueAndValidity updateValueAndValidity} method.\n     */\n    patchValue(value, options = {}) {\n        // Even though the `value` argument type doesn't allow `null` and `undefined` values, the\n        // `patchValue` can be called recursively and inner data structures might have these values,\n        // so we just ignore such cases when a field containing FormArray instance receives `null` or\n        // `undefined` as a value.\n        if (value == null /* both `null` and `undefined` */)\n            return;\n        value.forEach((newValue, index) => {\n            if (this.at(index)) {\n                this.at(index).patchValue(newValue, { onlySelf: true, emitEvent: options.emitEvent });\n            }\n        });\n        this.updateValueAndValidity(options);\n    }\n    /**\n     * Resets the `FormArray` and all descendants are marked `pristine` and `untouched`, and the\n     * value of all descendants to null or null maps.\n     *\n     * You reset to a specific form state by passing in an array of states\n     * that matches the structure of the control. The state is a standalone value\n     * or a form state object with both a value and a disabled status.\n     *\n     * @usageNotes\n     * ### Reset the values in a form array\n     *\n     * ```ts\n     * const arr = new FormArray([\n     *    new FormControl(),\n     *    new FormControl()\n     * ]);\n     * arr.reset(['name', 'last name']);\n     *\n     * console.log(arr.value);  // ['name', 'last name']\n     * ```\n     *\n     * ### Reset the values in a form array and the disabled status for the first control\n     *\n     * ```\n     * arr.reset([\n     *   {value: 'name', disabled: true},\n     *   'last'\n     * ]);\n     *\n     * console.log(arr.value);  // ['last']\n     * console.log(arr.at(0).status);  // 'DISABLED'\n     * ```\n     *\n     * @param value Array of values for the controls\n     * @param options Configure options that determine how the control propagates changes and\n     * emits events after the value changes\n     *\n     * * `onlySelf`: When true, each change only affects this control, and not its parent. Default\n     * is false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control is reset.\n     * When false, no events are emitted.\n     * The configuration options are passed to the {@link AbstractControl#updateValueAndValidity\n     * updateValueAndValidity} method.\n     */\n    reset(value = [], options = {}) {\n        this._forEachChild((control, index) => {\n            control.reset(value[index], { onlySelf: true, emitEvent: options.emitEvent });\n        });\n        this._updatePristine(options);\n        this._updateTouched(options);\n        this.updateValueAndValidity(options);\n    }\n    /**\n     * The aggregate value of the array, including any disabled controls.\n     *\n     * Reports all values regardless of disabled status.\n     */\n    getRawValue() {\n        return this.controls.map((control) => control.getRawValue());\n    }\n    /**\n     * Remove all controls in the `FormArray`.\n     *\n     * @param options Specifies whether this FormArray instance should emit events after all\n     *     controls are removed.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges` observables emit events with the latest status and value when all controls\n     * in this FormArray instance are removed. When false, no events are emitted.\n     *\n     * @usageNotes\n     * ### Remove all elements from a FormArray\n     *\n     * ```ts\n     * const arr = new FormArray([\n     *    new FormControl(),\n     *    new FormControl()\n     * ]);\n     * console.log(arr.length);  // 2\n     *\n     * arr.clear();\n     * console.log(arr.length);  // 0\n     * ```\n     *\n     * It's a simpler and more efficient alternative to removing all elements one by one:\n     *\n     * ```ts\n     * const arr = new FormArray([\n     *    new FormControl(),\n     *    new FormControl()\n     * ]);\n     *\n     * while (arr.length) {\n     *    arr.removeAt(0);\n     * }\n     * ```\n     */\n    clear(options = {}) {\n        if (this.controls.length < 1)\n            return;\n        this._forEachChild((control) => control._registerOnCollectionChange(() => { }));\n        this.controls.splice(0);\n        this.updateValueAndValidity({ emitEvent: options.emitEvent });\n    }\n    /**\n     * Adjusts a negative index by summing it with the length of the array. For very negative\n     * indices, the result may remain negative.\n     * @internal\n     */\n    _adjustIndex(index) {\n        return index < 0 ? index + this.length : index;\n    }\n    /** @internal */\n    _syncPendingControls() {\n        let subtreeUpdated = this.controls.reduce((updated, child) => {\n            return child._syncPendingControls() ? true : updated;\n        }, false);\n        if (subtreeUpdated)\n            this.updateValueAndValidity({ onlySelf: true });\n        return subtreeUpdated;\n    }\n    /** @internal */\n    _forEachChild(cb) {\n        this.controls.forEach((control, index) => {\n            cb(control, index);\n        });\n    }\n    /** @internal */\n    _updateValue() {\n        this.value =\n            this.controls.filter((control) => control.enabled || this.disabled)\n                .map((control) => control.value);\n    }\n    /** @internal */\n    _anyControls(condition) {\n        return this.controls.some((control) => control.enabled && condition(control));\n    }\n    /** @internal */\n    _setUpControls() {\n        this._forEachChild((control) => this._registerControl(control));\n    }\n    /** @internal */\n    _allControlsDisabled() {\n        for (const control of this.controls) {\n            if (control.enabled)\n                return false;\n        }\n        return this.controls.length > 0 || this.disabled;\n    }\n    _registerControl(control) {\n        control.setParent(this);\n        control._registerOnCollectionChange(this._onCollectionChange);\n    }\n    /** @internal */\n    _find(name) {\n        return this.at(name) ?? null;\n    }\n}\nconst UntypedFormArray = FormArray;\n/**\n * @description\n * Asserts that the given control is an instance of `FormArray`\n *\n * @publicApi\n */\nconst isFormArray = (control) => control instanceof FormArray;\n\nfunction isAbstractControlOptions(options) {\n    return !!options &&\n        (options.asyncValidators !== undefined ||\n            options.validators !== undefined ||\n            options.updateOn !== undefined);\n}\n// clang-format on\n/**\n * @description\n * Creates an `AbstractControl` from a user-specified configuration.\n *\n * The `FormBuilder` provides syntactic sugar that shortens creating instances of a\n * `FormControl`, `FormGroup`, or `FormArray`. It reduces the amount of boilerplate needed to\n * build complex forms.\n *\n * @see [Reactive Forms Guide](guide/reactive-forms)\n *\n * @publicApi\n */\nclass FormBuilder {\n    constructor() {\n        this.useNonNullable = false;\n    }\n    /**\n     * @description\n     * Returns a FormBuilder in which automatically constructed `FormControl` elements\n     * have `{nonNullable: true}` and are non-nullable.\n     *\n     * **Constructing non-nullable controls**\n     *\n     * When constructing a control, it will be non-nullable, and will reset to its initial value.\n     *\n     * ```ts\n     * let nnfb = new FormBuilder().nonNullable;\n     * let name = nnfb.control('Alex'); // FormControl<string>\n     * name.reset();\n     * console.log(name); // 'Alex'\n     * ```\n     *\n     * **Constructing non-nullable groups or arrays**\n     *\n     * When constructing a group or array, all automatically created inner controls will be\n     * non-nullable, and will reset to their initial values.\n     *\n     * ```ts\n     * let nnfb = new FormBuilder().nonNullable;\n     * let name = nnfb.group({who: 'Alex'}); // FormGroup<{who: FormControl<string>}>\n     * name.reset();\n     * console.log(name); // {who: 'Alex'}\n     * ```\n     * **Constructing *nullable* fields on groups or arrays**\n     *\n     * It is still possible to have a nullable field. In particular, any `FormControl` which is\n     * *already* constructed will not be altered. For example:\n     *\n     * ```ts\n     * let nnfb = new FormBuilder().nonNullable;\n     * // FormGroup<{who: FormControl<string|null>}>\n     * let name = nnfb.group({who: new FormControl('Alex')});\n     * name.reset(); console.log(name); // {who: null}\n     * ```\n     *\n     * Because the inner control is constructed explicitly by the caller, the builder has\n     * no control over how it is created, and cannot exclude the `null`.\n     */\n    get nonNullable() {\n        const nnfb = new FormBuilder();\n        nnfb.useNonNullable = true;\n        return nnfb;\n    }\n    group(controls, options = null) {\n        const reducedControls = this._reduceControls(controls);\n        let newOptions = {};\n        if (isAbstractControlOptions(options)) {\n            // `options` are `AbstractControlOptions`\n            newOptions = options;\n        }\n        else if (options !== null) {\n            // `options` are legacy form group options\n            newOptions.validators = options.validator;\n            newOptions.asyncValidators = options.asyncValidator;\n        }\n        return new FormGroup(reducedControls, newOptions);\n    }\n    /**\n     * @description\n     * Constructs a new `FormRecord` instance. Accepts a single generic argument, which is an object\n     * containing all the keys and corresponding inner control types.\n     *\n     * @param controls A collection of child controls. The key for each child is the name\n     * under which it is registered.\n     *\n     * @param options Configuration options object for the `FormRecord`. The object should have the\n     * `AbstractControlOptions` type and might contain the following fields:\n     * * `validators`: A synchronous validator function, or an array of validator functions.\n     * * `asyncValidators`: A single async validator or array of async validator functions.\n     * * `updateOn`: The event upon which the control should be updated (options: 'change' | 'blur'\n     * | submit').\n     */\n    record(controls, options = null) {\n        const reducedControls = this._reduceControls(controls);\n        // Cast to `any` because the inferred types are not as specific as Element.\n        return new FormRecord(reducedControls, options);\n    }\n    /**\n     * @description\n     * Constructs a new `FormControl` with the given state, validators and options. Sets\n     * `{nonNullable: true}` in the options to get a non-nullable control. Otherwise, the\n     * control will be nullable. Accepts a single generic argument, which is the type  of the\n     * control's value.\n     *\n     * @param formState Initializes the control with an initial state value, or\n     * with an object that contains both a value and a disabled status.\n     *\n     * @param validatorOrOpts A synchronous validator function, or an array of\n     * such functions, or a `FormControlOptions` object that contains\n     * validation functions and a validation trigger.\n     *\n     * @param asyncValidator A single async validator or array of async validator\n     * functions.\n     *\n     * @usageNotes\n     *\n     * ### Initialize a control as disabled\n     *\n     * The following example returns a control with an initial value in a disabled state.\n     *\n     * <code-example path=\"forms/ts/formBuilder/form_builder_example.ts\" region=\"disabled-control\">\n     * </code-example>\n     */\n    control(formState, validatorOrOpts, asyncValidator) {\n        let newOptions = {};\n        if (!this.useNonNullable) {\n            return new FormControl(formState, validatorOrOpts, asyncValidator);\n        }\n        if (isAbstractControlOptions(validatorOrOpts)) {\n            // If the second argument is options, then they are copied.\n            newOptions = validatorOrOpts;\n        }\n        else {\n            // If the other arguments are validators, they are copied into an options object.\n            newOptions.validators = validatorOrOpts;\n            newOptions.asyncValidators = asyncValidator;\n        }\n        return new FormControl(formState, { ...newOptions, nonNullable: true });\n    }\n    /**\n     * Constructs a new `FormArray` from the given array of configurations,\n     * validators and options. Accepts a single generic argument, which is the type of each control\n     * inside the array.\n     *\n     * @param controls An array of child controls or control configs. Each child control is given an\n     *     index when it is registered.\n     *\n     * @param validatorOrOpts A synchronous validator function, or an array of such functions, or an\n     *     `AbstractControlOptions` object that contains\n     * validation functions and a validation trigger.\n     *\n     * @param asyncValidator A single async validator or array of async validator functions.\n     */\n    array(controls, validatorOrOpts, asyncValidator) {\n        const createdControls = controls.map(c => this._createControl(c));\n        // Cast to `any` because the inferred types are not as specific as Element.\n        return new FormArray(createdControls, validatorOrOpts, asyncValidator);\n    }\n    /** @internal */\n    _reduceControls(controls) {\n        const createdControls = {};\n        Object.keys(controls).forEach(controlName => {\n            createdControls[controlName] = this._createControl(controls[controlName]);\n        });\n        return createdControls;\n    }\n    /** @internal */\n    _createControl(controls) {\n        if (controls instanceof FormControl) {\n            return controls;\n        }\n        else if (controls instanceof AbstractControl) { // A control; just return it\n            return controls;\n        }\n        else if (Array.isArray(controls)) { // ControlConfig Tuple\n            const value = controls[0];\n            const validator = controls.length > 1 ? controls[1] : null;\n            const asyncValidator = controls.length > 2 ? controls[2] : null;\n            return this.control(value, validator, asyncValidator);\n        }\n        else { // T or FormControlState<T>\n            return this.control(controls);\n        }\n    }\n}\nFormBuilder.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormBuilder, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nFormBuilder.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormBuilder, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormBuilder, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }] });\n/**\n * @description\n * `NonNullableFormBuilder` is similar to {@link FormBuilder}, but automatically constructed\n * {@link FormControl} elements have `{nonNullable: true}` and are non-nullable.\n *\n * @publicApi\n */\nclass NonNullableFormBuilder {\n}\nNonNullableFormBuilder.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NonNullableFormBuilder, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nNonNullableFormBuilder.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NonNullableFormBuilder, providedIn: 'root', useFactory: () => inject(FormBuilder).nonNullable });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: NonNullableFormBuilder, decorators: [{\n            type: Injectable,\n            args: [{\n                    providedIn: 'root',\n                    useFactory: () => inject(FormBuilder).nonNullable,\n                }]\n        }] });\n/**\n * UntypedFormBuilder is the same as `FormBuilder`, but it provides untyped controls.\n */\nclass UntypedFormBuilder extends FormBuilder {\n    group(controlsConfig, options = null) {\n        return super.group(controlsConfig, options);\n    }\n    /**\n     * Like `FormBuilder#control`, except the resulting control is untyped.\n     */\n    control(formState, validatorOrOpts, asyncValidator) {\n        return super.control(formState, validatorOrOpts, asyncValidator);\n    }\n    /**\n     * Like `FormBuilder#array`, except the resulting array is untyped.\n     */\n    array(controlsConfig, validatorOrOpts, asyncValidator) {\n        return super.array(controlsConfig, validatorOrOpts, asyncValidator);\n    }\n}\nUntypedFormBuilder.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: UntypedFormBuilder, deps: null, target: i0.ɵɵFactoryTarget.Injectable });\nUntypedFormBuilder.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: UntypedFormBuilder, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: UntypedFormBuilder, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }] });\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of the forms package.\n */\n/**\n * @publicApi\n */\nconst VERSION = new Version('15.2.10');\n\n/**\n * Exports the required providers and directives for template-driven forms,\n * making them available for import by NgModules that import this module.\n *\n * Providers associated with this module:\n * * `RadioControlRegistry`\n *\n * @see [Forms Overview](/guide/forms-overview)\n * @see [Template-driven Forms Guide](/guide/forms)\n *\n * @publicApi\n */\nclass FormsModule {\n    /**\n     * @description\n     * Provides options for configuring the forms module.\n     *\n     * @param opts An object of configuration options\n     * * `callSetDisabledState` Configures whether to `always` call `setDisabledState`, which is more\n     * correct, or to only call it `whenDisabled`, which is the legacy behavior.\n     */\n    static withConfig(opts) {\n        return {\n            ngModule: FormsModule,\n            providers: [{\n                    provide: CALL_SET_DISABLED_STATE,\n                    useValue: opts.callSetDisabledState ?? setDisabledStateDefault\n                }]\n        };\n    }\n}\nFormsModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormsModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nFormsModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: FormsModule, declarations: [NgModel, NgModelGroup, NgForm], exports: [ɵInternalFormsSharedModule, NgModel, NgModelGroup, NgForm] });\nFormsModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormsModule, imports: [ɵInternalFormsSharedModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: FormsModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    declarations: TEMPLATE_DRIVEN_DIRECTIVES,\n                    exports: [ɵInternalFormsSharedModule, TEMPLATE_DRIVEN_DIRECTIVES]\n                }]\n        }] });\n/**\n * Exports the required infrastructure and directives for reactive forms,\n * making them available for import by NgModules that import this module.\n *\n * Providers associated with this module:\n * * `FormBuilder`\n * * `RadioControlRegistry`\n *\n * @see [Forms Overview](guide/forms-overview)\n * @see [Reactive Forms Guide](guide/reactive-forms)\n *\n * @publicApi\n */\nclass ReactiveFormsModule {\n    /**\n     * @description\n     * Provides options for configuring the reactive forms module.\n     *\n     * @param opts An object of configuration options\n     * * `warnOnNgModelWithFormControl` Configures when to emit a warning when an `ngModel`\n     * binding is used with reactive form directives.\n     * * `callSetDisabledState` Configures whether to `always` call `setDisabledState`, which is more\n     * correct, or to only call it `whenDisabled`, which is the legacy behavior.\n     */\n    static withConfig(opts) {\n        return {\n            ngModule: ReactiveFormsModule,\n            providers: [\n                {\n                    provide: NG_MODEL_WITH_FORM_CONTROL_WARNING,\n                    useValue: opts.warnOnNgModelWithFormControl ?? 'always'\n                },\n                {\n                    provide: CALL_SET_DISABLED_STATE,\n                    useValue: opts.callSetDisabledState ?? setDisabledStateDefault\n                }\n            ]\n        };\n    }\n}\nReactiveFormsModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: ReactiveFormsModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nReactiveFormsModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.10\", ngImport: i0, type: ReactiveFormsModule, declarations: [FormControlDirective, FormGroupDirective, FormControlName, FormGroupName, FormArrayName], exports: [ɵInternalFormsSharedModule, FormControlDirective, FormGroupDirective, FormControlName, FormGroupName, FormArrayName] });\nReactiveFormsModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: ReactiveFormsModule, imports: [ɵInternalFormsSharedModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.10\", ngImport: i0, type: ReactiveFormsModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    declarations: [REACTIVE_DRIVEN_DIRECTIVES],\n                    exports: [ɵInternalFormsSharedModule, REACTIVE_DRIVEN_DIRECTIVES]\n                }]\n        }] });\n\n/**\n * @module\n * @description\n * This module is used for handling user input, by defining and building a `FormGroup` that\n * consists of `FormControl` objects, and mapping them onto the DOM. `FormControl`\n * objects can then be used to read information from the form DOM elements.\n *\n * Forms providers are not included in default providers; you must import these providers\n * explicitly.\n */\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of this package.\n */\n// This file only reexports content of the `src` folder. Keep it that way.\n\n// This file is not used to build this module. It is only used during editing\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { AbstractControl, AbstractControlDirective, AbstractFormGroupDirective, COMPOSITION_BUFFER_MODE, CheckboxControlValueAccessor, CheckboxRequiredValidator, ControlContainer, DefaultValueAccessor, EmailValidator, FormArray, FormArrayName, FormBuilder, FormControl, FormControlDirective, FormControlName, FormGroup, FormGroupDirective, FormGroupName, FormRecord, FormsModule, MaxLengthValidator, MaxValidator, MinLengthValidator, MinValidator, NG_ASYNC_VALIDATORS, NG_VALIDATORS, NG_VALUE_ACCESSOR, NgControl, NgControlStatus, NgControlStatusGroup, NgForm, NgModel, NgModelGroup, NgSelectOption, NonNullableFormBuilder, NumberValueAccessor, PatternValidator, RadioControlValueAccessor, RangeValueAccessor, ReactiveFormsModule, RequiredValidator, SelectControlValueAccessor, SelectMultipleControlValueAccessor, UntypedFormArray, UntypedFormBuilder, UntypedFormControl, UntypedFormGroup, VERSION, Validators, isFormArray, isFormControl, isFormGroup, isFormRecord, ɵInternalFormsSharedModule, ɵNgNoValidate, ɵNgSelectMultipleOption };\n","import * as i0 from '@angular/core';\nimport { PLATFORM_ID, Injectable, Inject, NgModule } from '@angular/core';\nimport { isPlatformBrowser } from '@angular/common';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// Whether the current platform supports the V8 Break Iterator. The V8 check\n// is necessary to detect all Blink based browsers.\nlet hasV8BreakIterator;\n// We need a try/catch around the reference to `Intl`, because accessing it in some cases can\n// cause IE to throw. These cases are tied to particular versions of Windows and can happen if\n// the consumer is providing a polyfilled `Map`. See:\n// https://github.com/Microsoft/ChakraCore/issues/3189\n// https://github.com/angular/components/issues/15687\ntry {\n    hasV8BreakIterator = typeof Intl !== 'undefined' && Intl.v8BreakIterator;\n}\ncatch {\n    hasV8BreakIterator = false;\n}\n/**\n * Service to detect the current platform by comparing the userAgent strings and\n * checking browser-specific global properties.\n */\nclass Platform {\n    constructor(_platformId) {\n        this._platformId = _platformId;\n        // We want to use the Angular platform check because if the Document is shimmed\n        // without the navigator, the following checks will fail. This is preferred because\n        // sometimes the Document may be shimmed without the user's knowledge or intention\n        /** Whether the Angular application is being rendered in the browser. */\n        this.isBrowser = this._platformId\n            ? isPlatformBrowser(this._platformId)\n            : typeof document === 'object' && !!document;\n        /** Whether the current browser is Microsoft Edge. */\n        this.EDGE = this.isBrowser && /(edge)/i.test(navigator.userAgent);\n        /** Whether the current rendering engine is Microsoft Trident. */\n        this.TRIDENT = this.isBrowser && /(msie|trident)/i.test(navigator.userAgent);\n        // EdgeHTML and Trident mock Blink specific things and need to be excluded from this check.\n        /** Whether the current rendering engine is Blink. */\n        this.BLINK = this.isBrowser &&\n            !!(window.chrome || hasV8BreakIterator) &&\n            typeof CSS !== 'undefined' &&\n            !this.EDGE &&\n            !this.TRIDENT;\n        // Webkit is part of the userAgent in EdgeHTML, Blink and Trident. Therefore we need to\n        // ensure that Webkit runs standalone and is not used as another engine's base.\n        /** Whether the current rendering engine is WebKit. */\n        this.WEBKIT = this.isBrowser &&\n            /AppleWebKit/i.test(navigator.userAgent) &&\n            !this.BLINK &&\n            !this.EDGE &&\n            !this.TRIDENT;\n        /** Whether the current platform is Apple iOS. */\n        this.IOS = this.isBrowser && /iPad|iPhone|iPod/.test(navigator.userAgent) && !('MSStream' in window);\n        // It's difficult to detect the plain Gecko engine, because most of the browsers identify\n        // them self as Gecko-like browsers and modify the userAgent's according to that.\n        // Since we only cover one explicit Firefox case, we can simply check for Firefox\n        // instead of having an unstable check for Gecko.\n        /** Whether the current browser is Firefox. */\n        this.FIREFOX = this.isBrowser && /(firefox|minefield)/i.test(navigator.userAgent);\n        /** Whether the current platform is Android. */\n        // Trident on mobile adds the android platform to the userAgent to trick detections.\n        this.ANDROID = this.isBrowser && /android/i.test(navigator.userAgent) && !this.TRIDENT;\n        // Safari browsers will include the Safari keyword in their userAgent. Some browsers may fake\n        // this and just place the Safari keyword in the userAgent. To be more safe about Safari every\n        // Safari browser should also use Webkit as its layout engine.\n        /** Whether the current browser is Safari. */\n        this.SAFARI = this.isBrowser && /safari/i.test(navigator.userAgent) && this.WEBKIT;\n    }\n}\nPlatform.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: Platform, deps: [{ token: PLATFORM_ID }], target: i0.ɵɵFactoryTarget.Injectable });\nPlatform.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: Platform, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: Platform, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return [{ type: Object, decorators: [{\n                    type: Inject,\n                    args: [PLATFORM_ID]\n                }] }]; } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass PlatformModule {\n}\nPlatformModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: PlatformModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nPlatformModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: PlatformModule });\nPlatformModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: PlatformModule });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: PlatformModule, decorators: [{\n            type: NgModule,\n            args: [{}]\n        }] });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Cached result Set of input types support by the current browser. */\nlet supportedInputTypes;\n/** Types of `<input>` that *might* be supported. */\nconst candidateInputTypes = [\n    // `color` must come first. Chrome 56 shows a warning if we change the type to `color` after\n    // first changing it to something else:\n    // The specified value \"\" does not conform to the required format.\n    // The format is \"#rrggbb\" where rr, gg, bb are two-digit hexadecimal numbers.\n    'color',\n    'button',\n    'checkbox',\n    'date',\n    'datetime-local',\n    'email',\n    'file',\n    'hidden',\n    'image',\n    'month',\n    'number',\n    'password',\n    'radio',\n    'range',\n    'reset',\n    'search',\n    'submit',\n    'tel',\n    'text',\n    'time',\n    'url',\n    'week',\n];\n/** @returns The input types supported by this browser. */\nfunction getSupportedInputTypes() {\n    // Result is cached.\n    if (supportedInputTypes) {\n        return supportedInputTypes;\n    }\n    // We can't check if an input type is not supported until we're on the browser, so say that\n    // everything is supported when not on the browser. We don't use `Platform` here since it's\n    // just a helper function and can't inject it.\n    if (typeof document !== 'object' || !document) {\n        supportedInputTypes = new Set(candidateInputTypes);\n        return supportedInputTypes;\n    }\n    let featureTestInput = document.createElement('input');\n    supportedInputTypes = new Set(candidateInputTypes.filter(value => {\n        featureTestInput.setAttribute('type', value);\n        return featureTestInput.type === value;\n    }));\n    return supportedInputTypes;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Cached result of whether the user's browser supports passive event listeners. */\nlet supportsPassiveEvents;\n/**\n * Checks whether the user's browser supports passive event listeners.\n * See: https://github.com/WICG/EventListenerOptions/blob/gh-pages/explainer.md\n */\nfunction supportsPassiveEventListeners() {\n    if (supportsPassiveEvents == null && typeof window !== 'undefined') {\n        try {\n            window.addEventListener('test', null, Object.defineProperty({}, 'passive', {\n                get: () => (supportsPassiveEvents = true),\n            }));\n        }\n        finally {\n            supportsPassiveEvents = supportsPassiveEvents || false;\n        }\n    }\n    return supportsPassiveEvents;\n}\n/**\n * Normalizes an `AddEventListener` object to something that can be passed\n * to `addEventListener` on any browser, no matter whether it supports the\n * `options` parameter.\n * @param options Object to be normalized.\n */\nfunction normalizePassiveListenerOptions(options) {\n    return supportsPassiveEventListeners() ? options : !!options.capture;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Cached result of the way the browser handles the horizontal scroll axis in RTL mode. */\nlet rtlScrollAxisType;\n/** Cached result of the check that indicates whether the browser supports scroll behaviors. */\nlet scrollBehaviorSupported;\n/** Check whether the browser supports scroll behaviors. */\nfunction supportsScrollBehavior() {\n    if (scrollBehaviorSupported == null) {\n        // If we're not in the browser, it can't be supported. Also check for `Element`, because\n        // some projects stub out the global `document` during SSR which can throw us off.\n        if (typeof document !== 'object' || !document || typeof Element !== 'function' || !Element) {\n            scrollBehaviorSupported = false;\n            return scrollBehaviorSupported;\n        }\n        // If the element can have a `scrollBehavior` style, we can be sure that it's supported.\n        if ('scrollBehavior' in document.documentElement.style) {\n            scrollBehaviorSupported = true;\n        }\n        else {\n            // At this point we have 3 possibilities: `scrollTo` isn't supported at all, it's\n            // supported but it doesn't handle scroll behavior, or it has been polyfilled.\n            const scrollToFunction = Element.prototype.scrollTo;\n            if (scrollToFunction) {\n                // We can detect if the function has been polyfilled by calling `toString` on it. Native\n                // functions are obfuscated using `[native code]`, whereas if it was overwritten we'd get\n                // the actual function source. Via https://davidwalsh.name/detect-native-function. Consider\n                // polyfilled functions as supporting scroll behavior.\n                scrollBehaviorSupported = !/\\{\\s*\\[native code\\]\\s*\\}/.test(scrollToFunction.toString());\n            }\n            else {\n                scrollBehaviorSupported = false;\n            }\n        }\n    }\n    return scrollBehaviorSupported;\n}\n/**\n * Checks the type of RTL scroll axis used by this browser. As of time of writing, Chrome is NORMAL,\n * Firefox & Safari are NEGATED, and IE & Edge are INVERTED.\n */\nfunction getRtlScrollAxisType() {\n    // We can't check unless we're on the browser. Just assume 'normal' if we're not.\n    if (typeof document !== 'object' || !document) {\n        return 0 /* RtlScrollAxisType.NORMAL */;\n    }\n    if (rtlScrollAxisType == null) {\n        // Create a 1px wide scrolling container and a 2px wide content element.\n        const scrollContainer = document.createElement('div');\n        const containerStyle = scrollContainer.style;\n        scrollContainer.dir = 'rtl';\n        containerStyle.width = '1px';\n        containerStyle.overflow = 'auto';\n        containerStyle.visibility = 'hidden';\n        containerStyle.pointerEvents = 'none';\n        containerStyle.position = 'absolute';\n        const content = document.createElement('div');\n        const contentStyle = content.style;\n        contentStyle.width = '2px';\n        contentStyle.height = '1px';\n        scrollContainer.appendChild(content);\n        document.body.appendChild(scrollContainer);\n        rtlScrollAxisType = 0 /* RtlScrollAxisType.NORMAL */;\n        // The viewport starts scrolled all the way to the right in RTL mode. If we are in a NORMAL\n        // browser this would mean that the scrollLeft should be 1. If it's zero instead we know we're\n        // dealing with one of the other two types of browsers.\n        if (scrollContainer.scrollLeft === 0) {\n            // In a NEGATED browser the scrollLeft is always somewhere in [-maxScrollAmount, 0]. For an\n            // INVERTED browser it is always somewhere in [0, maxScrollAmount]. We can determine which by\n            // setting to the scrollLeft to 1. This is past the max for a NEGATED browser, so it will\n            // return 0 when we read it again.\n            scrollContainer.scrollLeft = 1;\n            rtlScrollAxisType =\n                scrollContainer.scrollLeft === 0 ? 1 /* RtlScrollAxisType.NEGATED */ : 2 /* RtlScrollAxisType.INVERTED */;\n        }\n        scrollContainer.remove();\n    }\n    return rtlScrollAxisType;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nlet shadowDomIsSupported;\n/** Checks whether the user's browser support Shadow DOM. */\nfunction _supportsShadowDom() {\n    if (shadowDomIsSupported == null) {\n        const head = typeof document !== 'undefined' ? document.head : null;\n        shadowDomIsSupported = !!(head && (head.createShadowRoot || head.attachShadow));\n    }\n    return shadowDomIsSupported;\n}\n/** Gets the shadow root of an element, if supported and the element is inside the Shadow DOM. */\nfunction _getShadowRoot(element) {\n    if (_supportsShadowDom()) {\n        const rootNode = element.getRootNode ? element.getRootNode() : null;\n        // Note that this should be caught by `_supportsShadowDom`, but some\n        // teams have been able to hit this code path on unsupported browsers.\n        if (typeof ShadowRoot !== 'undefined' && ShadowRoot && rootNode instanceof ShadowRoot) {\n            return rootNode;\n        }\n    }\n    return null;\n}\n/**\n * Gets the currently-focused element on the page while\n * also piercing through Shadow DOM boundaries.\n */\nfunction _getFocusedElementPierceShadowDom() {\n    let activeElement = typeof document !== 'undefined' && document\n        ? document.activeElement\n        : null;\n    while (activeElement && activeElement.shadowRoot) {\n        const newActiveElement = activeElement.shadowRoot.activeElement;\n        if (newActiveElement === activeElement) {\n            break;\n        }\n        else {\n            activeElement = newActiveElement;\n        }\n    }\n    return activeElement;\n}\n/** Gets the target of an event while accounting for Shadow DOM. */\nfunction _getEventTarget(event) {\n    // If an event is bound outside the Shadow DOM, the `event.target` will\n    // point to the shadow root so we have to use `composedPath` instead.\n    return (event.composedPath ? event.composedPath()[0] : event.target);\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Gets whether the code is currently running in a test environment. */\nfunction _isTestEnvironment() {\n    // We can't use `declare const` because it causes conflicts inside Google with the real typings\n    // for these symbols and we can't read them off the global object, because they don't appear to\n    // be attached there for some runners like Jest.\n    // (see: https://github.com/angular/components/issues/23365#issuecomment-938146643)\n    return (\n    // @ts-ignore\n    (typeof __karma__ !== 'undefined' && !!__karma__) ||\n        // @ts-ignore\n        (typeof jasmine !== 'undefined' && !!jasmine) ||\n        // @ts-ignore\n        (typeof jest !== 'undefined' && !!jest) ||\n        // @ts-ignore\n        (typeof Mocha !== 'undefined' && !!Mocha));\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { Platform, PlatformModule, _getEventTarget, _getFocusedElementPierceShadowDom, _getShadowRoot, _isTestEnvironment, _supportsShadowDom, getRtlScrollAxisType, getSupportedInputTypes, normalizePassiveListenerOptions, supportsPassiveEventListeners, supportsScrollBehavior };\n","import { ElementRef } from '@angular/core';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Coerces a data-bound value (typically a string) to a boolean. */\nfunction coerceBooleanProperty(value) {\n    return value != null && `${value}` !== 'false';\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nfunction coerceNumberProperty(value, fallbackValue = 0) {\n    return _isNumberValue(value) ? Number(value) : fallbackValue;\n}\n/**\n * Whether the provided value is considered a number.\n * @docs-private\n */\nfunction _isNumberValue(value) {\n    // parseFloat(value) handles most of the cases we're interested in (it treats null, empty string,\n    // and other non-number values as NaN, where Number just uses 0) but it considers the string\n    // '123hello' to be a valid number. Therefore we also check if Number(value) is NaN.\n    return !isNaN(parseFloat(value)) && !isNaN(Number(value));\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nfunction coerceArray(value) {\n    return Array.isArray(value) ? value : [value];\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Coerces a value to a CSS pixel value. */\nfunction coerceCssPixelValue(value) {\n    if (value == null) {\n        return '';\n    }\n    return typeof value === 'string' ? value : `${value}px`;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Coerces an ElementRef or an Element into an element.\n * Useful for APIs that can accept either a ref or the native element itself.\n */\nfunction coerceElement(elementOrRef) {\n    return elementOrRef instanceof ElementRef ? elementOrRef.nativeElement : elementOrRef;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Coerces a value to an array of trimmed non-empty strings.\n * Any input that is not an array, `null` or `undefined` will be turned into a string\n * via `toString()` and subsequently split with the given separator.\n * `null` and `undefined` will result in an empty array.\n * This results in the following outcomes:\n * - `null` -&gt; `[]`\n * - `[null]` -&gt; `[\"null\"]`\n * - `[\"a\", \"b \", \" \"]` -&gt; `[\"a\", \"b\"]`\n * - `[1, [2, 3]]` -&gt; `[\"1\", \"2,3\"]`\n * - `[{ a: 0 }]` -&gt; `[\"[object Object]\"]`\n * - `{ a: 0 }` -&gt; `[\"[object\", \"Object]\"]`\n *\n * Useful for defining CSS classes or table columns.\n * @param value the value to coerce into an array of strings\n * @param separator split-separator if value isn't an array\n */\nfunction coerceStringArray(value, separator = /\\s+/) {\n    const result = [];\n    if (value != null) {\n        const sourceValues = Array.isArray(value) ? value : `${value}`.split(separator);\n        for (const sourceValue of sourceValues) {\n            const trimmedString = `${sourceValue}`.trim();\n            if (trimmedString) {\n                result.push(trimmedString);\n            }\n        }\n    }\n    return result;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nexport { _isNumberValue, coerceArray, coerceBooleanProperty, coerceCssPixelValue, coerceElement, coerceNumberProperty, coerceStringArray };\n","import * as i0 from '@angular/core';\nimport { NgModule, Injectable } from '@angular/core';\nimport { coerceArray } from '@angular/cdk/coercion';\nimport { Subject, combineLatest, concat, Observable } from 'rxjs';\nimport { take, skip, debounceTime, map, startWith, takeUntil } from 'rxjs/operators';\nimport * as i1 from '@angular/cdk/platform';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass LayoutModule {\n}\nLayoutModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: LayoutModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nLayoutModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: LayoutModule });\nLayoutModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: LayoutModule });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: LayoutModule, decorators: [{\n            type: NgModule,\n            args: [{}]\n        }] });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Global registry for all dynamically-created, injected media queries. */\nconst mediaQueriesForWebkitCompatibility = new Set();\n/** Style tag that holds all of the dynamically-created media queries. */\nlet mediaQueryStyleNode;\n/** A utility for calling matchMedia queries. */\nclass MediaMatcher {\n    constructor(_platform) {\n        this._platform = _platform;\n        this._matchMedia =\n            this._platform.isBrowser && window.matchMedia\n                ? // matchMedia is bound to the window scope intentionally as it is an illegal invocation to\n                    // call it from a different scope.\n                    window.matchMedia.bind(window)\n                : noopMatchMedia;\n    }\n    /**\n     * Evaluates the given media query and returns the native MediaQueryList from which results\n     * can be retrieved.\n     * Confirms the layout engine will trigger for the selector query provided and returns the\n     * MediaQueryList for the query provided.\n     */\n    matchMedia(query) {\n        if (this._platform.WEBKIT || this._platform.BLINK) {\n            createEmptyStyleRule(query);\n        }\n        return this._matchMedia(query);\n    }\n}\nMediaMatcher.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MediaMatcher, deps: [{ token: i1.Platform }], target: i0.ɵɵFactoryTarget.Injectable });\nMediaMatcher.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MediaMatcher, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MediaMatcher, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return [{ type: i1.Platform }]; } });\n/**\n * Creates an empty stylesheet that is used to work around browser inconsistencies related to\n * `matchMedia`. At the time of writing, it handles the following cases:\n * 1. On WebKit browsers, a media query has to have at least one rule in order for `matchMedia`\n * to fire. We work around it by declaring a dummy stylesheet with a `@media` declaration.\n * 2. In some cases Blink browsers will stop firing the `matchMedia` listener if none of the rules\n * inside the `@media` match existing elements on the page. We work around it by having one rule\n * targeting the `body`. See https://github.com/angular/components/issues/23546.\n */\nfunction createEmptyStyleRule(query) {\n    if (mediaQueriesForWebkitCompatibility.has(query)) {\n        return;\n    }\n    try {\n        if (!mediaQueryStyleNode) {\n            mediaQueryStyleNode = document.createElement('style');\n            mediaQueryStyleNode.setAttribute('type', 'text/css');\n            document.head.appendChild(mediaQueryStyleNode);\n        }\n        if (mediaQueryStyleNode.sheet) {\n            mediaQueryStyleNode.sheet.insertRule(`@media ${query} {body{ }}`, 0);\n            mediaQueriesForWebkitCompatibility.add(query);\n        }\n    }\n    catch (e) {\n        console.error(e);\n    }\n}\n/** No-op matchMedia replacement for non-browser platforms. */\nfunction noopMatchMedia(query) {\n    // Use `as any` here to avoid adding additional necessary properties for\n    // the noop matcher.\n    return {\n        matches: query === 'all' || query === '',\n        media: query,\n        addListener: () => { },\n        removeListener: () => { },\n    };\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Utility for checking the matching state of @media queries. */\nclass BreakpointObserver {\n    constructor(_mediaMatcher, _zone) {\n        this._mediaMatcher = _mediaMatcher;\n        this._zone = _zone;\n        /**  A map of all media queries currently being listened for. */\n        this._queries = new Map();\n        /** A subject for all other observables to takeUntil based on. */\n        this._destroySubject = new Subject();\n    }\n    /** Completes the active subject, signalling to all other observables to complete. */\n    ngOnDestroy() {\n        this._destroySubject.next();\n        this._destroySubject.complete();\n    }\n    /**\n     * Whether one or more media queries match the current viewport size.\n     * @param value One or more media queries to check.\n     * @returns Whether any of the media queries match.\n     */\n    isMatched(value) {\n        const queries = splitQueries(coerceArray(value));\n        return queries.some(mediaQuery => this._registerQuery(mediaQuery).mql.matches);\n    }\n    /**\n     * Gets an observable of results for the given queries that will emit new results for any changes\n     * in matching of the given queries.\n     * @param value One or more media queries to check.\n     * @returns A stream of matches for the given queries.\n     */\n    observe(value) {\n        const queries = splitQueries(coerceArray(value));\n        const observables = queries.map(query => this._registerQuery(query).observable);\n        let stateObservable = combineLatest(observables);\n        // Emit the first state immediately, and then debounce the subsequent emissions.\n        stateObservable = concat(stateObservable.pipe(take(1)), stateObservable.pipe(skip(1), debounceTime(0)));\n        return stateObservable.pipe(map(breakpointStates => {\n            const response = {\n                matches: false,\n                breakpoints: {},\n            };\n            breakpointStates.forEach(({ matches, query }) => {\n                response.matches = response.matches || matches;\n                response.breakpoints[query] = matches;\n            });\n            return response;\n        }));\n    }\n    /** Registers a specific query to be listened for. */\n    _registerQuery(query) {\n        // Only set up a new MediaQueryList if it is not already being listened for.\n        if (this._queries.has(query)) {\n            return this._queries.get(query);\n        }\n        const mql = this._mediaMatcher.matchMedia(query);\n        // Create callback for match changes and add it is as a listener.\n        const queryObservable = new Observable((observer) => {\n            // Listener callback methods are wrapped to be placed back in ngZone. Callbacks must be placed\n            // back into the zone because matchMedia is only included in Zone.js by loading the\n            // webapis-media-query.js file alongside the zone.js file.  Additionally, some browsers do not\n            // have MediaQueryList inherit from EventTarget, which causes inconsistencies in how Zone.js\n            // patches it.\n            const handler = (e) => this._zone.run(() => observer.next(e));\n            mql.addListener(handler);\n            return () => {\n                mql.removeListener(handler);\n            };\n        }).pipe(startWith(mql), map(({ matches }) => ({ query, matches })), takeUntil(this._destroySubject));\n        // Add the MediaQueryList to the set of queries.\n        const output = { observable: queryObservable, mql };\n        this._queries.set(query, output);\n        return output;\n    }\n}\nBreakpointObserver.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: BreakpointObserver, deps: [{ token: MediaMatcher }, { token: i0.NgZone }], target: i0.ɵɵFactoryTarget.Injectable });\nBreakpointObserver.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: BreakpointObserver, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: BreakpointObserver, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return [{ type: MediaMatcher }, { type: i0.NgZone }]; } });\n/**\n * Split each query string into separate query strings if two queries are provided as comma\n * separated.\n */\nfunction splitQueries(queries) {\n    return queries\n        .map(query => query.split(','))\n        .reduce((a1, a2) => a1.concat(a2))\n        .map(query => query.trim());\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// PascalCase is being used as Breakpoints is used like an enum.\n// tslint:disable-next-line:variable-name\nconst Breakpoints = {\n    XSmall: '(max-width: 599.98px)',\n    Small: '(min-width: 600px) and (max-width: 959.98px)',\n    Medium: '(min-width: 960px) and (max-width: 1279.98px)',\n    Large: '(min-width: 1280px) and (max-width: 1919.98px)',\n    XLarge: '(min-width: 1920px)',\n    Handset: '(max-width: 599.98px) and (orientation: portrait), ' +\n        '(max-width: 959.98px) and (orientation: landscape)',\n    Tablet: '(min-width: 600px) and (max-width: 839.98px) and (orientation: portrait), ' +\n        '(min-width: 960px) and (max-width: 1279.98px) and (orientation: landscape)',\n    Web: '(min-width: 840px) and (orientation: portrait), ' +\n        '(min-width: 1280px) and (orientation: landscape)',\n    HandsetPortrait: '(max-width: 599.98px) and (orientation: portrait)',\n    TabletPortrait: '(min-width: 600px) and (max-width: 839.98px) and (orientation: portrait)',\n    WebPortrait: '(min-width: 840px) and (orientation: portrait)',\n    HandsetLandscape: '(max-width: 959.98px) and (orientation: landscape)',\n    TabletLandscape: '(min-width: 960px) and (max-width: 1279.98px) and (orientation: landscape)',\n    WebLandscape: '(min-width: 1280px) and (orientation: landscape)',\n};\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { BreakpointObserver, Breakpoints, LayoutModule, MediaMatcher };\n","import { DOCUMENT } from '@angular/common';\nimport * as i0 from '@angular/core';\nimport { inject, APP_ID, Injectable, Inject, QueryList, Directive, Input, InjectionToken, Optional, EventEmitter, Output, NgModule } from '@angular/core';\nimport * as i1 from '@angular/cdk/platform';\nimport { _getFocusedElementPierceShadowDom, normalizePassiveListenerOptions, _getEventTarget, _getShadowRoot } from '@angular/cdk/platform';\nimport { Subject, Subscription, BehaviorSubject, of } from 'rxjs';\nimport { hasModifierKey, A, Z, ZERO, NINE, PAGE_DOWN, PAGE_UP, END, HOME, LEFT_ARROW, RIGHT_ARROW, UP_ARROW, DOWN_ARROW, TAB, ALT, CONTROL, MAC_META, META, SHIFT } from '@angular/cdk/keycodes';\nimport { tap, debounceTime, filter, map, take, skip, distinctUntilChanged, takeUntil } from 'rxjs/operators';\nimport { coerceBooleanProperty, coerceElement } from '@angular/cdk/coercion';\nimport * as i1$1 from '@angular/cdk/observers';\nimport { ObserversModule } from '@angular/cdk/observers';\nimport { BreakpointObserver } from '@angular/cdk/layout';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** IDs are delimited by an empty space, as per the spec. */\nconst ID_DELIMITER = ' ';\n/**\n * Adds the given ID to the specified ARIA attribute on an element.\n * Used for attributes such as aria-labelledby, aria-owns, etc.\n */\nfunction addAriaReferencedId(el, attr, id) {\n    const ids = getAriaReferenceIds(el, attr);\n    if (ids.some(existingId => existingId.trim() == id.trim())) {\n        return;\n    }\n    ids.push(id.trim());\n    el.setAttribute(attr, ids.join(ID_DELIMITER));\n}\n/**\n * Removes the given ID from the specified ARIA attribute on an element.\n * Used for attributes such as aria-labelledby, aria-owns, etc.\n */\nfunction removeAriaReferencedId(el, attr, id) {\n    const ids = getAriaReferenceIds(el, attr);\n    const filteredIds = ids.filter(val => val != id.trim());\n    if (filteredIds.length) {\n        el.setAttribute(attr, filteredIds.join(ID_DELIMITER));\n    }\n    else {\n        el.removeAttribute(attr);\n    }\n}\n/**\n * Gets the list of IDs referenced by the given ARIA attribute on an element.\n * Used for attributes such as aria-labelledby, aria-owns, etc.\n */\nfunction getAriaReferenceIds(el, attr) {\n    // Get string array of all individual ids (whitespace delimited) in the attribute value\n    return (el.getAttribute(attr) || '').match(/\\S+/g) || [];\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * ID used for the body container where all messages are appended.\n * @deprecated No longer being used. To be removed.\n * @breaking-change 14.0.0\n */\nconst MESSAGES_CONTAINER_ID = 'cdk-describedby-message-container';\n/**\n * ID prefix used for each created message element.\n * @deprecated To be turned into a private variable.\n * @breaking-change 14.0.0\n */\nconst CDK_DESCRIBEDBY_ID_PREFIX = 'cdk-describedby-message';\n/**\n * Attribute given to each host element that is described by a message element.\n * @deprecated To be turned into a private variable.\n * @breaking-change 14.0.0\n */\nconst CDK_DESCRIBEDBY_HOST_ATTRIBUTE = 'cdk-describedby-host';\n/** Global incremental identifier for each registered message element. */\nlet nextId = 0;\n/**\n * Utility that creates visually hidden elements with a message content. Useful for elements that\n * want to use aria-describedby to further describe themselves without adding additional visual\n * content.\n */\nclass AriaDescriber {\n    constructor(_document, \n    /**\n     * @deprecated To be turned into a required parameter.\n     * @breaking-change 14.0.0\n     */\n    _platform) {\n        this._platform = _platform;\n        /** Map of all registered message elements that have been placed into the document. */\n        this._messageRegistry = new Map();\n        /** Container for all registered messages. */\n        this._messagesContainer = null;\n        /** Unique ID for the service. */\n        this._id = `${nextId++}`;\n        this._document = _document;\n        this._id = inject(APP_ID) + '-' + nextId++;\n    }\n    describe(hostElement, message, role) {\n        if (!this._canBeDescribed(hostElement, message)) {\n            return;\n        }\n        const key = getKey(message, role);\n        if (typeof message !== 'string') {\n            // We need to ensure that the element has an ID.\n            setMessageId(message, this._id);\n            this._messageRegistry.set(key, { messageElement: message, referenceCount: 0 });\n        }\n        else if (!this._messageRegistry.has(key)) {\n            this._createMessageElement(message, role);\n        }\n        if (!this._isElementDescribedByMessage(hostElement, key)) {\n            this._addMessageReference(hostElement, key);\n        }\n    }\n    removeDescription(hostElement, message, role) {\n        if (!message || !this._isElementNode(hostElement)) {\n            return;\n        }\n        const key = getKey(message, role);\n        if (this._isElementDescribedByMessage(hostElement, key)) {\n            this._removeMessageReference(hostElement, key);\n        }\n        // If the message is a string, it means that it's one that we created for the\n        // consumer so we can remove it safely, otherwise we should leave it in place.\n        if (typeof message === 'string') {\n            const registeredMessage = this._messageRegistry.get(key);\n            if (registeredMessage && registeredMessage.referenceCount === 0) {\n                this._deleteMessageElement(key);\n            }\n        }\n        if (this._messagesContainer?.childNodes.length === 0) {\n            this._messagesContainer.remove();\n            this._messagesContainer = null;\n        }\n    }\n    /** Unregisters all created message elements and removes the message container. */\n    ngOnDestroy() {\n        const describedElements = this._document.querySelectorAll(`[${CDK_DESCRIBEDBY_HOST_ATTRIBUTE}=\"${this._id}\"]`);\n        for (let i = 0; i < describedElements.length; i++) {\n            this._removeCdkDescribedByReferenceIds(describedElements[i]);\n            describedElements[i].removeAttribute(CDK_DESCRIBEDBY_HOST_ATTRIBUTE);\n        }\n        this._messagesContainer?.remove();\n        this._messagesContainer = null;\n        this._messageRegistry.clear();\n    }\n    /**\n     * Creates a new element in the visually hidden message container element with the message\n     * as its content and adds it to the message registry.\n     */\n    _createMessageElement(message, role) {\n        const messageElement = this._document.createElement('div');\n        setMessageId(messageElement, this._id);\n        messageElement.textContent = message;\n        if (role) {\n            messageElement.setAttribute('role', role);\n        }\n        this._createMessagesContainer();\n        this._messagesContainer.appendChild(messageElement);\n        this._messageRegistry.set(getKey(message, role), { messageElement, referenceCount: 0 });\n    }\n    /** Deletes the message element from the global messages container. */\n    _deleteMessageElement(key) {\n        this._messageRegistry.get(key)?.messageElement?.remove();\n        this._messageRegistry.delete(key);\n    }\n    /** Creates the global container for all aria-describedby messages. */\n    _createMessagesContainer() {\n        if (this._messagesContainer) {\n            return;\n        }\n        const containerClassName = 'cdk-describedby-message-container';\n        const serverContainers = this._document.querySelectorAll(`.${containerClassName}[platform=\"server\"]`);\n        for (let i = 0; i < serverContainers.length; i++) {\n            // When going from the server to the client, we may end up in a situation where there's\n            // already a container on the page, but we don't have a reference to it. Clear the\n            // old container so we don't get duplicates. Doing this, instead of emptying the previous\n            // container, should be slightly faster.\n            serverContainers[i].remove();\n        }\n        const messagesContainer = this._document.createElement('div');\n        // We add `visibility: hidden` in order to prevent text in this container from\n        // being searchable by the browser's Ctrl + F functionality.\n        // Screen-readers will still read the description for elements with aria-describedby even\n        // when the description element is not visible.\n        messagesContainer.style.visibility = 'hidden';\n        // Even though we use `visibility: hidden`, we still apply `cdk-visually-hidden` so that\n        // the description element doesn't impact page layout.\n        messagesContainer.classList.add(containerClassName);\n        messagesContainer.classList.add('cdk-visually-hidden');\n        // @breaking-change 14.0.0 Remove null check for `_platform`.\n        if (this._platform && !this._platform.isBrowser) {\n            messagesContainer.setAttribute('platform', 'server');\n        }\n        this._document.body.appendChild(messagesContainer);\n        this._messagesContainer = messagesContainer;\n    }\n    /** Removes all cdk-describedby messages that are hosted through the element. */\n    _removeCdkDescribedByReferenceIds(element) {\n        // Remove all aria-describedby reference IDs that are prefixed by CDK_DESCRIBEDBY_ID_PREFIX\n        const originalReferenceIds = getAriaReferenceIds(element, 'aria-describedby').filter(id => id.indexOf(CDK_DESCRIBEDBY_ID_PREFIX) != 0);\n        element.setAttribute('aria-describedby', originalReferenceIds.join(' '));\n    }\n    /**\n     * Adds a message reference to the element using aria-describedby and increments the registered\n     * message's reference count.\n     */\n    _addMessageReference(element, key) {\n        const registeredMessage = this._messageRegistry.get(key);\n        // Add the aria-describedby reference and set the\n        // describedby_host attribute to mark the element.\n        addAriaReferencedId(element, 'aria-describedby', registeredMessage.messageElement.id);\n        element.setAttribute(CDK_DESCRIBEDBY_HOST_ATTRIBUTE, this._id);\n        registeredMessage.referenceCount++;\n    }\n    /**\n     * Removes a message reference from the element using aria-describedby\n     * and decrements the registered message's reference count.\n     */\n    _removeMessageReference(element, key) {\n        const registeredMessage = this._messageRegistry.get(key);\n        registeredMessage.referenceCount--;\n        removeAriaReferencedId(element, 'aria-describedby', registeredMessage.messageElement.id);\n        element.removeAttribute(CDK_DESCRIBEDBY_HOST_ATTRIBUTE);\n    }\n    /** Returns true if the element has been described by the provided message ID. */\n    _isElementDescribedByMessage(element, key) {\n        const referenceIds = getAriaReferenceIds(element, 'aria-describedby');\n        const registeredMessage = this._messageRegistry.get(key);\n        const messageId = registeredMessage && registeredMessage.messageElement.id;\n        return !!messageId && referenceIds.indexOf(messageId) != -1;\n    }\n    /** Determines whether a message can be described on a particular element. */\n    _canBeDescribed(element, message) {\n        if (!this._isElementNode(element)) {\n            return false;\n        }\n        if (message && typeof message === 'object') {\n            // We'd have to make some assumptions about the description element's text, if the consumer\n            // passed in an element. Assume that if an element is passed in, the consumer has verified\n            // that it can be used as a description.\n            return true;\n        }\n        const trimmedMessage = message == null ? '' : `${message}`.trim();\n        const ariaLabel = element.getAttribute('aria-label');\n        // We shouldn't set descriptions if they're exactly the same as the `aria-label` of the\n        // element, because screen readers will end up reading out the same text twice in a row.\n        return trimmedMessage ? !ariaLabel || ariaLabel.trim() !== trimmedMessage : false;\n    }\n    /** Checks whether a node is an Element node. */\n    _isElementNode(element) {\n        return element.nodeType === this._document.ELEMENT_NODE;\n    }\n}\nAriaDescriber.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: AriaDescriber, deps: [{ token: DOCUMENT }, { token: i1.Platform }], target: i0.ɵɵFactoryTarget.Injectable });\nAriaDescriber.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: AriaDescriber, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: AriaDescriber, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }, { type: i1.Platform }]; } });\n/** Gets a key that can be used to look messages up in the registry. */\nfunction getKey(message, role) {\n    return typeof message === 'string' ? `${role || ''}/${message}` : message;\n}\n/** Assigns a unique ID to an element, if it doesn't have one already. */\nfunction setMessageId(element, serviceId) {\n    if (!element.id) {\n        element.id = `${CDK_DESCRIBEDBY_ID_PREFIX}-${serviceId}-${nextId++}`;\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * This class manages keyboard events for selectable lists. If you pass it a query list\n * of items, it will set the active item correctly when arrow events occur.\n */\nclass ListKeyManager {\n    constructor(_items) {\n        this._items = _items;\n        this._activeItemIndex = -1;\n        this._activeItem = null;\n        this._wrap = false;\n        this._letterKeyStream = new Subject();\n        this._typeaheadSubscription = Subscription.EMPTY;\n        this._vertical = true;\n        this._allowedModifierKeys = [];\n        this._homeAndEnd = false;\n        this._pageUpAndDown = { enabled: false, delta: 10 };\n        /**\n         * Predicate function that can be used to check whether an item should be skipped\n         * by the key manager. By default, disabled items are skipped.\n         */\n        this._skipPredicateFn = (item) => item.disabled;\n        // Buffer for the letters that the user has pressed when the typeahead option is turned on.\n        this._pressedLetters = [];\n        /**\n         * Stream that emits any time the TAB key is pressed, so components can react\n         * when focus is shifted off of the list.\n         */\n        this.tabOut = new Subject();\n        /** Stream that emits whenever the active item of the list manager changes. */\n        this.change = new Subject();\n        // We allow for the items to be an array because, in some cases, the consumer may\n        // not have access to a QueryList of the items they want to manage (e.g. when the\n        // items aren't being collected via `ViewChildren` or `ContentChildren`).\n        if (_items instanceof QueryList) {\n            this._itemChangesSubscription = _items.changes.subscribe((newItems) => {\n                if (this._activeItem) {\n                    const itemArray = newItems.toArray();\n                    const newIndex = itemArray.indexOf(this._activeItem);\n                    if (newIndex > -1 && newIndex !== this._activeItemIndex) {\n                        this._activeItemIndex = newIndex;\n                    }\n                }\n            });\n        }\n    }\n    /**\n     * Sets the predicate function that determines which items should be skipped by the\n     * list key manager.\n     * @param predicate Function that determines whether the given item should be skipped.\n     */\n    skipPredicate(predicate) {\n        this._skipPredicateFn = predicate;\n        return this;\n    }\n    /**\n     * Configures wrapping mode, which determines whether the active item will wrap to\n     * the other end of list when there are no more items in the given direction.\n     * @param shouldWrap Whether the list should wrap when reaching the end.\n     */\n    withWrap(shouldWrap = true) {\n        this._wrap = shouldWrap;\n        return this;\n    }\n    /**\n     * Configures whether the key manager should be able to move the selection vertically.\n     * @param enabled Whether vertical selection should be enabled.\n     */\n    withVerticalOrientation(enabled = true) {\n        this._vertical = enabled;\n        return this;\n    }\n    /**\n     * Configures the key manager to move the selection horizontally.\n     * Passing in `null` will disable horizontal movement.\n     * @param direction Direction in which the selection can be moved.\n     */\n    withHorizontalOrientation(direction) {\n        this._horizontal = direction;\n        return this;\n    }\n    /**\n     * Modifier keys which are allowed to be held down and whose default actions will be prevented\n     * as the user is pressing the arrow keys. Defaults to not allowing any modifier keys.\n     */\n    withAllowedModifierKeys(keys) {\n        this._allowedModifierKeys = keys;\n        return this;\n    }\n    /**\n     * Turns on typeahead mode which allows users to set the active item by typing.\n     * @param debounceInterval Time to wait after the last keystroke before setting the active item.\n     */\n    withTypeAhead(debounceInterval = 200) {\n        if ((typeof ngDevMode === 'undefined' || ngDevMode) &&\n            this._items.length &&\n            this._items.some(item => typeof item.getLabel !== 'function')) {\n            throw Error('ListKeyManager items in typeahead mode must implement the `getLabel` method.');\n        }\n        this._typeaheadSubscription.unsubscribe();\n        // Debounce the presses of non-navigational keys, collect the ones that correspond to letters\n        // and convert those letters back into a string. Afterwards find the first item that starts\n        // with that string and select it.\n        this._typeaheadSubscription = this._letterKeyStream\n            .pipe(tap(letter => this._pressedLetters.push(letter)), debounceTime(debounceInterval), filter(() => this._pressedLetters.length > 0), map(() => this._pressedLetters.join('')))\n            .subscribe(inputString => {\n            const items = this._getItemsArray();\n            // Start at 1 because we want to start searching at the item immediately\n            // following the current active item.\n            for (let i = 1; i < items.length + 1; i++) {\n                const index = (this._activeItemIndex + i) % items.length;\n                const item = items[index];\n                if (!this._skipPredicateFn(item) &&\n                    item.getLabel().toUpperCase().trim().indexOf(inputString) === 0) {\n                    this.setActiveItem(index);\n                    break;\n                }\n            }\n            this._pressedLetters = [];\n        });\n        return this;\n    }\n    /** Cancels the current typeahead sequence. */\n    cancelTypeahead() {\n        this._pressedLetters = [];\n        return this;\n    }\n    /**\n     * Configures the key manager to activate the first and last items\n     * respectively when the Home or End key is pressed.\n     * @param enabled Whether pressing the Home or End key activates the first/last item.\n     */\n    withHomeAndEnd(enabled = true) {\n        this._homeAndEnd = enabled;\n        return this;\n    }\n    /**\n     * Configures the key manager to activate every 10th, configured or first/last element in up/down direction\n     * respectively when the Page-Up or Page-Down key is pressed.\n     * @param enabled Whether pressing the Page-Up or Page-Down key activates the first/last item.\n     * @param delta Whether pressing the Home or End key activates the first/last item.\n     */\n    withPageUpDown(enabled = true, delta = 10) {\n        this._pageUpAndDown = { enabled, delta };\n        return this;\n    }\n    setActiveItem(item) {\n        const previousActiveItem = this._activeItem;\n        this.updateActiveItem(item);\n        if (this._activeItem !== previousActiveItem) {\n            this.change.next(this._activeItemIndex);\n        }\n    }\n    /**\n     * Sets the active item depending on the key event passed in.\n     * @param event Keyboard event to be used for determining which element should be active.\n     */\n    onKeydown(event) {\n        const keyCode = event.keyCode;\n        const modifiers = ['altKey', 'ctrlKey', 'metaKey', 'shiftKey'];\n        const isModifierAllowed = modifiers.every(modifier => {\n            return !event[modifier] || this._allowedModifierKeys.indexOf(modifier) > -1;\n        });\n        switch (keyCode) {\n            case TAB:\n                this.tabOut.next();\n                return;\n            case DOWN_ARROW:\n                if (this._vertical && isModifierAllowed) {\n                    this.setNextItemActive();\n                    break;\n                }\n                else {\n                    return;\n                }\n            case UP_ARROW:\n                if (this._vertical && isModifierAllowed) {\n                    this.setPreviousItemActive();\n                    break;\n                }\n                else {\n                    return;\n                }\n            case RIGHT_ARROW:\n                if (this._horizontal && isModifierAllowed) {\n                    this._horizontal === 'rtl' ? this.setPreviousItemActive() : this.setNextItemActive();\n                    break;\n                }\n                else {\n                    return;\n                }\n            case LEFT_ARROW:\n                if (this._horizontal && isModifierAllowed) {\n                    this._horizontal === 'rtl' ? this.setNextItemActive() : this.setPreviousItemActive();\n                    break;\n                }\n                else {\n                    return;\n                }\n            case HOME:\n                if (this._homeAndEnd && isModifierAllowed) {\n                    this.setFirstItemActive();\n                    break;\n                }\n                else {\n                    return;\n                }\n            case END:\n                if (this._homeAndEnd && isModifierAllowed) {\n                    this.setLastItemActive();\n                    break;\n                }\n                else {\n                    return;\n                }\n            case PAGE_UP:\n                if (this._pageUpAndDown.enabled && isModifierAllowed) {\n                    const targetIndex = this._activeItemIndex - this._pageUpAndDown.delta;\n                    this._setActiveItemByIndex(targetIndex > 0 ? targetIndex : 0, 1);\n                    break;\n                }\n                else {\n                    return;\n                }\n            case PAGE_DOWN:\n                if (this._pageUpAndDown.enabled && isModifierAllowed) {\n                    const targetIndex = this._activeItemIndex + this._pageUpAndDown.delta;\n                    const itemsLength = this._getItemsArray().length;\n                    this._setActiveItemByIndex(targetIndex < itemsLength ? targetIndex : itemsLength - 1, -1);\n                    break;\n                }\n                else {\n                    return;\n                }\n            default:\n                if (isModifierAllowed || hasModifierKey(event, 'shiftKey')) {\n                    // Attempt to use the `event.key` which also maps it to the user's keyboard language,\n                    // otherwise fall back to resolving alphanumeric characters via the keyCode.\n                    if (event.key && event.key.length === 1) {\n                        this._letterKeyStream.next(event.key.toLocaleUpperCase());\n                    }\n                    else if ((keyCode >= A && keyCode <= Z) || (keyCode >= ZERO && keyCode <= NINE)) {\n                        this._letterKeyStream.next(String.fromCharCode(keyCode));\n                    }\n                }\n                // Note that we return here, in order to avoid preventing\n                // the default action of non-navigational keys.\n                return;\n        }\n        this._pressedLetters = [];\n        event.preventDefault();\n    }\n    /** Index of the currently active item. */\n    get activeItemIndex() {\n        return this._activeItemIndex;\n    }\n    /** The active item. */\n    get activeItem() {\n        return this._activeItem;\n    }\n    /** Gets whether the user is currently typing into the manager using the typeahead feature. */\n    isTyping() {\n        return this._pressedLetters.length > 0;\n    }\n    /** Sets the active item to the first enabled item in the list. */\n    setFirstItemActive() {\n        this._setActiveItemByIndex(0, 1);\n    }\n    /** Sets the active item to the last enabled item in the list. */\n    setLastItemActive() {\n        this._setActiveItemByIndex(this._items.length - 1, -1);\n    }\n    /** Sets the active item to the next enabled item in the list. */\n    setNextItemActive() {\n        this._activeItemIndex < 0 ? this.setFirstItemActive() : this._setActiveItemByDelta(1);\n    }\n    /** Sets the active item to a previous enabled item in the list. */\n    setPreviousItemActive() {\n        this._activeItemIndex < 0 && this._wrap\n            ? this.setLastItemActive()\n            : this._setActiveItemByDelta(-1);\n    }\n    updateActiveItem(item) {\n        const itemArray = this._getItemsArray();\n        const index = typeof item === 'number' ? item : itemArray.indexOf(item);\n        const activeItem = itemArray[index];\n        // Explicitly check for `null` and `undefined` because other falsy values are valid.\n        this._activeItem = activeItem == null ? null : activeItem;\n        this._activeItemIndex = index;\n    }\n    /** Cleans up the key manager. */\n    destroy() {\n        this._typeaheadSubscription.unsubscribe();\n        this._itemChangesSubscription?.unsubscribe();\n        this._letterKeyStream.complete();\n        this.tabOut.complete();\n        this.change.complete();\n        this._pressedLetters = [];\n    }\n    /**\n     * This method sets the active item, given a list of items and the delta between the\n     * currently active item and the new active item. It will calculate differently\n     * depending on whether wrap mode is turned on.\n     */\n    _setActiveItemByDelta(delta) {\n        this._wrap ? this._setActiveInWrapMode(delta) : this._setActiveInDefaultMode(delta);\n    }\n    /**\n     * Sets the active item properly given \"wrap\" mode. In other words, it will continue to move\n     * down the list until it finds an item that is not disabled, and it will wrap if it\n     * encounters either end of the list.\n     */\n    _setActiveInWrapMode(delta) {\n        const items = this._getItemsArray();\n        for (let i = 1; i <= items.length; i++) {\n            const index = (this._activeItemIndex + delta * i + items.length) % items.length;\n            const item = items[index];\n            if (!this._skipPredicateFn(item)) {\n                this.setActiveItem(index);\n                return;\n            }\n        }\n    }\n    /**\n     * Sets the active item properly given the default mode. In other words, it will\n     * continue to move down the list until it finds an item that is not disabled. If\n     * it encounters either end of the list, it will stop and not wrap.\n     */\n    _setActiveInDefaultMode(delta) {\n        this._setActiveItemByIndex(this._activeItemIndex + delta, delta);\n    }\n    /**\n     * Sets the active item to the first enabled item starting at the index specified. If the\n     * item is disabled, it will move in the fallbackDelta direction until it either\n     * finds an enabled item or encounters the end of the list.\n     */\n    _setActiveItemByIndex(index, fallbackDelta) {\n        const items = this._getItemsArray();\n        if (!items[index]) {\n            return;\n        }\n        while (this._skipPredicateFn(items[index])) {\n            index += fallbackDelta;\n            if (!items[index]) {\n                return;\n            }\n        }\n        this.setActiveItem(index);\n    }\n    /** Returns the items as an array. */\n    _getItemsArray() {\n        return this._items instanceof QueryList ? this._items.toArray() : this._items;\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass ActiveDescendantKeyManager extends ListKeyManager {\n    setActiveItem(index) {\n        if (this.activeItem) {\n            this.activeItem.setInactiveStyles();\n        }\n        super.setActiveItem(index);\n        if (this.activeItem) {\n            this.activeItem.setActiveStyles();\n        }\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass FocusKeyManager extends ListKeyManager {\n    constructor() {\n        super(...arguments);\n        this._origin = 'program';\n    }\n    /**\n     * Sets the focus origin that will be passed in to the items for any subsequent `focus` calls.\n     * @param origin Focus origin to be used when focusing items.\n     */\n    setFocusOrigin(origin) {\n        this._origin = origin;\n        return this;\n    }\n    setActiveItem(item) {\n        super.setActiveItem(item);\n        if (this.activeItem) {\n            this.activeItem.focus(this._origin);\n        }\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Configuration for the isFocusable method.\n */\nclass IsFocusableConfig {\n    constructor() {\n        /**\n         * Whether to count an element as focusable even if it is not currently visible.\n         */\n        this.ignoreVisibility = false;\n    }\n}\n// The InteractivityChecker leans heavily on the ally.js accessibility utilities.\n// Methods like `isTabbable` are only covering specific edge-cases for the browsers which are\n// supported.\n/**\n * Utility for checking the interactivity of an element, such as whether is is focusable or\n * tabbable.\n */\nclass InteractivityChecker {\n    constructor(_platform) {\n        this._platform = _platform;\n    }\n    /**\n     * Gets whether an element is disabled.\n     *\n     * @param element Element to be checked.\n     * @returns Whether the element is disabled.\n     */\n    isDisabled(element) {\n        // This does not capture some cases, such as a non-form control with a disabled attribute or\n        // a form control inside of a disabled form, but should capture the most common cases.\n        return element.hasAttribute('disabled');\n    }\n    /**\n     * Gets whether an element is visible for the purposes of interactivity.\n     *\n     * This will capture states like `display: none` and `visibility: hidden`, but not things like\n     * being clipped by an `overflow: hidden` parent or being outside the viewport.\n     *\n     * @returns Whether the element is visible.\n     */\n    isVisible(element) {\n        return hasGeometry(element) && getComputedStyle(element).visibility === 'visible';\n    }\n    /**\n     * Gets whether an element can be reached via Tab key.\n     * Assumes that the element has already been checked with isFocusable.\n     *\n     * @param element Element to be checked.\n     * @returns Whether the element is tabbable.\n     */\n    isTabbable(element) {\n        // Nothing is tabbable on the server 😎\n        if (!this._platform.isBrowser) {\n            return false;\n        }\n        const frameElement = getFrameElement(getWindow(element));\n        if (frameElement) {\n            // Frame elements inherit their tabindex onto all child elements.\n            if (getTabIndexValue(frameElement) === -1) {\n                return false;\n            }\n            // Browsers disable tabbing to an element inside of an invisible frame.\n            if (!this.isVisible(frameElement)) {\n                return false;\n            }\n        }\n        let nodeName = element.nodeName.toLowerCase();\n        let tabIndexValue = getTabIndexValue(element);\n        if (element.hasAttribute('contenteditable')) {\n            return tabIndexValue !== -1;\n        }\n        if (nodeName === 'iframe' || nodeName === 'object') {\n            // The frame or object's content may be tabbable depending on the content, but it's\n            // not possibly to reliably detect the content of the frames. We always consider such\n            // elements as non-tabbable.\n            return false;\n        }\n        // In iOS, the browser only considers some specific elements as tabbable.\n        if (this._platform.WEBKIT && this._platform.IOS && !isPotentiallyTabbableIOS(element)) {\n            return false;\n        }\n        if (nodeName === 'audio') {\n            // Audio elements without controls enabled are never tabbable, regardless\n            // of the tabindex attribute explicitly being set.\n            if (!element.hasAttribute('controls')) {\n                return false;\n            }\n            // Audio elements with controls are by default tabbable unless the\n            // tabindex attribute is set to `-1` explicitly.\n            return tabIndexValue !== -1;\n        }\n        if (nodeName === 'video') {\n            // For all video elements, if the tabindex attribute is set to `-1`, the video\n            // is not tabbable. Note: We cannot rely on the default `HTMLElement.tabIndex`\n            // property as that one is set to `-1` in Chrome, Edge and Safari v13.1. The\n            // tabindex attribute is the source of truth here.\n            if (tabIndexValue === -1) {\n                return false;\n            }\n            // If the tabindex is explicitly set, and not `-1` (as per check before), the\n            // video element is always tabbable (regardless of whether it has controls or not).\n            if (tabIndexValue !== null) {\n                return true;\n            }\n            // Otherwise (when no explicit tabindex is set), a video is only tabbable if it\n            // has controls enabled. Firefox is special as videos are always tabbable regardless\n            // of whether there are controls or not.\n            return this._platform.FIREFOX || element.hasAttribute('controls');\n        }\n        return element.tabIndex >= 0;\n    }\n    /**\n     * Gets whether an element can be focused by the user.\n     *\n     * @param element Element to be checked.\n     * @param config The config object with options to customize this method's behavior\n     * @returns Whether the element is focusable.\n     */\n    isFocusable(element, config) {\n        // Perform checks in order of left to most expensive.\n        // Again, naive approach that does not capture many edge cases and browser quirks.\n        return (isPotentiallyFocusable(element) &&\n            !this.isDisabled(element) &&\n            (config?.ignoreVisibility || this.isVisible(element)));\n    }\n}\nInteractivityChecker.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: InteractivityChecker, deps: [{ token: i1.Platform }], target: i0.ɵɵFactoryTarget.Injectable });\nInteractivityChecker.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: InteractivityChecker, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: InteractivityChecker, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return [{ type: i1.Platform }]; } });\n/**\n * Returns the frame element from a window object. Since browsers like MS Edge throw errors if\n * the frameElement property is being accessed from a different host address, this property\n * should be accessed carefully.\n */\nfunction getFrameElement(window) {\n    try {\n        return window.frameElement;\n    }\n    catch {\n        return null;\n    }\n}\n/** Checks whether the specified element has any geometry / rectangles. */\nfunction hasGeometry(element) {\n    // Use logic from jQuery to check for an invisible element.\n    // See https://github.com/jquery/jquery/blob/master/src/css/hiddenVisibleSelectors.js#L12\n    return !!(element.offsetWidth ||\n        element.offsetHeight ||\n        (typeof element.getClientRects === 'function' && element.getClientRects().length));\n}\n/** Gets whether an element's  */\nfunction isNativeFormElement(element) {\n    let nodeName = element.nodeName.toLowerCase();\n    return (nodeName === 'input' ||\n        nodeName === 'select' ||\n        nodeName === 'button' ||\n        nodeName === 'textarea');\n}\n/** Gets whether an element is an `<input type=\"hidden\">`. */\nfunction isHiddenInput(element) {\n    return isInputElement(element) && element.type == 'hidden';\n}\n/** Gets whether an element is an anchor that has an href attribute. */\nfunction isAnchorWithHref(element) {\n    return isAnchorElement(element) && element.hasAttribute('href');\n}\n/** Gets whether an element is an input element. */\nfunction isInputElement(element) {\n    return element.nodeName.toLowerCase() == 'input';\n}\n/** Gets whether an element is an anchor element. */\nfunction isAnchorElement(element) {\n    return element.nodeName.toLowerCase() == 'a';\n}\n/** Gets whether an element has a valid tabindex. */\nfunction hasValidTabIndex(element) {\n    if (!element.hasAttribute('tabindex') || element.tabIndex === undefined) {\n        return false;\n    }\n    let tabIndex = element.getAttribute('tabindex');\n    return !!(tabIndex && !isNaN(parseInt(tabIndex, 10)));\n}\n/**\n * Returns the parsed tabindex from the element attributes instead of returning the\n * evaluated tabindex from the browsers defaults.\n */\nfunction getTabIndexValue(element) {\n    if (!hasValidTabIndex(element)) {\n        return null;\n    }\n    // See browser issue in Gecko https://bugzilla.mozilla.org/show_bug.cgi?id=1128054\n    const tabIndex = parseInt(element.getAttribute('tabindex') || '', 10);\n    return isNaN(tabIndex) ? -1 : tabIndex;\n}\n/** Checks whether the specified element is potentially tabbable on iOS */\nfunction isPotentiallyTabbableIOS(element) {\n    let nodeName = element.nodeName.toLowerCase();\n    let inputType = nodeName === 'input' && element.type;\n    return (inputType === 'text' ||\n        inputType === 'password' ||\n        nodeName === 'select' ||\n        nodeName === 'textarea');\n}\n/**\n * Gets whether an element is potentially focusable without taking current visible/disabled state\n * into account.\n */\nfunction isPotentiallyFocusable(element) {\n    // Inputs are potentially focusable *unless* they're type=\"hidden\".\n    if (isHiddenInput(element)) {\n        return false;\n    }\n    return (isNativeFormElement(element) ||\n        isAnchorWithHref(element) ||\n        element.hasAttribute('contenteditable') ||\n        hasValidTabIndex(element));\n}\n/** Gets the parent window of a DOM node with regards of being inside of an iframe. */\nfunction getWindow(node) {\n    // ownerDocument is null if `node` itself *is* a document.\n    return (node.ownerDocument && node.ownerDocument.defaultView) || window;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Class that allows for trapping focus within a DOM element.\n *\n * This class currently uses a relatively simple approach to focus trapping.\n * It assumes that the tab order is the same as DOM order, which is not necessarily true.\n * Things like `tabIndex > 0`, flex `order`, and shadow roots can cause the two to be misaligned.\n *\n * @deprecated Use `ConfigurableFocusTrap` instead.\n * @breaking-change 11.0.0\n */\nclass FocusTrap {\n    /** Whether the focus trap is active. */\n    get enabled() {\n        return this._enabled;\n    }\n    set enabled(value) {\n        this._enabled = value;\n        if (this._startAnchor && this._endAnchor) {\n            this._toggleAnchorTabIndex(value, this._startAnchor);\n            this._toggleAnchorTabIndex(value, this._endAnchor);\n        }\n    }\n    constructor(_element, _checker, _ngZone, _document, deferAnchors = false) {\n        this._element = _element;\n        this._checker = _checker;\n        this._ngZone = _ngZone;\n        this._document = _document;\n        this._hasAttached = false;\n        // Event listeners for the anchors. Need to be regular functions so that we can unbind them later.\n        this.startAnchorListener = () => this.focusLastTabbableElement();\n        this.endAnchorListener = () => this.focusFirstTabbableElement();\n        this._enabled = true;\n        if (!deferAnchors) {\n            this.attachAnchors();\n        }\n    }\n    /** Destroys the focus trap by cleaning up the anchors. */\n    destroy() {\n        const startAnchor = this._startAnchor;\n        const endAnchor = this._endAnchor;\n        if (startAnchor) {\n            startAnchor.removeEventListener('focus', this.startAnchorListener);\n            startAnchor.remove();\n        }\n        if (endAnchor) {\n            endAnchor.removeEventListener('focus', this.endAnchorListener);\n            endAnchor.remove();\n        }\n        this._startAnchor = this._endAnchor = null;\n        this._hasAttached = false;\n    }\n    /**\n     * Inserts the anchors into the DOM. This is usually done automatically\n     * in the constructor, but can be deferred for cases like directives with `*ngIf`.\n     * @returns Whether the focus trap managed to attach successfully. This may not be the case\n     * if the target element isn't currently in the DOM.\n     */\n    attachAnchors() {\n        // If we're not on the browser, there can be no focus to trap.\n        if (this._hasAttached) {\n            return true;\n        }\n        this._ngZone.runOutsideAngular(() => {\n            if (!this._startAnchor) {\n                this._startAnchor = this._createAnchor();\n                this._startAnchor.addEventListener('focus', this.startAnchorListener);\n            }\n            if (!this._endAnchor) {\n                this._endAnchor = this._createAnchor();\n                this._endAnchor.addEventListener('focus', this.endAnchorListener);\n            }\n        });\n        if (this._element.parentNode) {\n            this._element.parentNode.insertBefore(this._startAnchor, this._element);\n            this._element.parentNode.insertBefore(this._endAnchor, this._element.nextSibling);\n            this._hasAttached = true;\n        }\n        return this._hasAttached;\n    }\n    /**\n     * Waits for the zone to stabilize, then focuses the first tabbable element.\n     * @returns Returns a promise that resolves with a boolean, depending\n     * on whether focus was moved successfully.\n     */\n    focusInitialElementWhenReady(options) {\n        return new Promise(resolve => {\n            this._executeOnStable(() => resolve(this.focusInitialElement(options)));\n        });\n    }\n    /**\n     * Waits for the zone to stabilize, then focuses\n     * the first tabbable element within the focus trap region.\n     * @returns Returns a promise that resolves with a boolean, depending\n     * on whether focus was moved successfully.\n     */\n    focusFirstTabbableElementWhenReady(options) {\n        return new Promise(resolve => {\n            this._executeOnStable(() => resolve(this.focusFirstTabbableElement(options)));\n        });\n    }\n    /**\n     * Waits for the zone to stabilize, then focuses\n     * the last tabbable element within the focus trap region.\n     * @returns Returns a promise that resolves with a boolean, depending\n     * on whether focus was moved successfully.\n     */\n    focusLastTabbableElementWhenReady(options) {\n        return new Promise(resolve => {\n            this._executeOnStable(() => resolve(this.focusLastTabbableElement(options)));\n        });\n    }\n    /**\n     * Get the specified boundary element of the trapped region.\n     * @param bound The boundary to get (start or end of trapped region).\n     * @returns The boundary element.\n     */\n    _getRegionBoundary(bound) {\n        // Contains the deprecated version of selector, for temporary backwards comparability.\n        const markers = this._element.querySelectorAll(`[cdk-focus-region-${bound}], ` + `[cdkFocusRegion${bound}], ` + `[cdk-focus-${bound}]`);\n        if (typeof ngDevMode === 'undefined' || ngDevMode) {\n            for (let i = 0; i < markers.length; i++) {\n                // @breaking-change 8.0.0\n                if (markers[i].hasAttribute(`cdk-focus-${bound}`)) {\n                    console.warn(`Found use of deprecated attribute 'cdk-focus-${bound}', ` +\n                        `use 'cdkFocusRegion${bound}' instead. The deprecated ` +\n                        `attribute will be removed in 8.0.0.`, markers[i]);\n                }\n                else if (markers[i].hasAttribute(`cdk-focus-region-${bound}`)) {\n                    console.warn(`Found use of deprecated attribute 'cdk-focus-region-${bound}', ` +\n                        `use 'cdkFocusRegion${bound}' instead. The deprecated attribute ` +\n                        `will be removed in 8.0.0.`, markers[i]);\n                }\n            }\n        }\n        if (bound == 'start') {\n            return markers.length ? markers[0] : this._getFirstTabbableElement(this._element);\n        }\n        return markers.length\n            ? markers[markers.length - 1]\n            : this._getLastTabbableElement(this._element);\n    }\n    /**\n     * Focuses the element that should be focused when the focus trap is initialized.\n     * @returns Whether focus was moved successfully.\n     */\n    focusInitialElement(options) {\n        // Contains the deprecated version of selector, for temporary backwards comparability.\n        const redirectToElement = this._element.querySelector(`[cdk-focus-initial], ` + `[cdkFocusInitial]`);\n        if (redirectToElement) {\n            // @breaking-change 8.0.0\n            if ((typeof ngDevMode === 'undefined' || ngDevMode) &&\n                redirectToElement.hasAttribute(`cdk-focus-initial`)) {\n                console.warn(`Found use of deprecated attribute 'cdk-focus-initial', ` +\n                    `use 'cdkFocusInitial' instead. The deprecated attribute ` +\n                    `will be removed in 8.0.0`, redirectToElement);\n            }\n            // Warn the consumer if the element they've pointed to\n            // isn't focusable, when not in production mode.\n            if ((typeof ngDevMode === 'undefined' || ngDevMode) &&\n                !this._checker.isFocusable(redirectToElement)) {\n                console.warn(`Element matching '[cdkFocusInitial]' is not focusable.`, redirectToElement);\n            }\n            if (!this._checker.isFocusable(redirectToElement)) {\n                const focusableChild = this._getFirstTabbableElement(redirectToElement);\n                focusableChild?.focus(options);\n                return !!focusableChild;\n            }\n            redirectToElement.focus(options);\n            return true;\n        }\n        return this.focusFirstTabbableElement(options);\n    }\n    /**\n     * Focuses the first tabbable element within the focus trap region.\n     * @returns Whether focus was moved successfully.\n     */\n    focusFirstTabbableElement(options) {\n        const redirectToElement = this._getRegionBoundary('start');\n        if (redirectToElement) {\n            redirectToElement.focus(options);\n        }\n        return !!redirectToElement;\n    }\n    /**\n     * Focuses the last tabbable element within the focus trap region.\n     * @returns Whether focus was moved successfully.\n     */\n    focusLastTabbableElement(options) {\n        const redirectToElement = this._getRegionBoundary('end');\n        if (redirectToElement) {\n            redirectToElement.focus(options);\n        }\n        return !!redirectToElement;\n    }\n    /**\n     * Checks whether the focus trap has successfully been attached.\n     */\n    hasAttached() {\n        return this._hasAttached;\n    }\n    /** Get the first tabbable element from a DOM subtree (inclusive). */\n    _getFirstTabbableElement(root) {\n        if (this._checker.isFocusable(root) && this._checker.isTabbable(root)) {\n            return root;\n        }\n        const children = root.children;\n        for (let i = 0; i < children.length; i++) {\n            const tabbableChild = children[i].nodeType === this._document.ELEMENT_NODE\n                ? this._getFirstTabbableElement(children[i])\n                : null;\n            if (tabbableChild) {\n                return tabbableChild;\n            }\n        }\n        return null;\n    }\n    /** Get the last tabbable element from a DOM subtree (inclusive). */\n    _getLastTabbableElement(root) {\n        if (this._checker.isFocusable(root) && this._checker.isTabbable(root)) {\n            return root;\n        }\n        // Iterate in reverse DOM order.\n        const children = root.children;\n        for (let i = children.length - 1; i >= 0; i--) {\n            const tabbableChild = children[i].nodeType === this._document.ELEMENT_NODE\n                ? this._getLastTabbableElement(children[i])\n                : null;\n            if (tabbableChild) {\n                return tabbableChild;\n            }\n        }\n        return null;\n    }\n    /** Creates an anchor element. */\n    _createAnchor() {\n        const anchor = this._document.createElement('div');\n        this._toggleAnchorTabIndex(this._enabled, anchor);\n        anchor.classList.add('cdk-visually-hidden');\n        anchor.classList.add('cdk-focus-trap-anchor');\n        anchor.setAttribute('aria-hidden', 'true');\n        return anchor;\n    }\n    /**\n     * Toggles the `tabindex` of an anchor, based on the enabled state of the focus trap.\n     * @param isEnabled Whether the focus trap is enabled.\n     * @param anchor Anchor on which to toggle the tabindex.\n     */\n    _toggleAnchorTabIndex(isEnabled, anchor) {\n        // Remove the tabindex completely, rather than setting it to -1, because if the\n        // element has a tabindex, the user might still hit it when navigating with the arrow keys.\n        isEnabled ? anchor.setAttribute('tabindex', '0') : anchor.removeAttribute('tabindex');\n    }\n    /**\n     * Toggles the`tabindex` of both anchors to either trap Tab focus or allow it to escape.\n     * @param enabled: Whether the anchors should trap Tab.\n     */\n    toggleAnchors(enabled) {\n        if (this._startAnchor && this._endAnchor) {\n            this._toggleAnchorTabIndex(enabled, this._startAnchor);\n            this._toggleAnchorTabIndex(enabled, this._endAnchor);\n        }\n    }\n    /** Executes a function when the zone is stable. */\n    _executeOnStable(fn) {\n        if (this._ngZone.isStable) {\n            fn();\n        }\n        else {\n            this._ngZone.onStable.pipe(take(1)).subscribe(fn);\n        }\n    }\n}\n/**\n * Factory that allows easy instantiation of focus traps.\n * @deprecated Use `ConfigurableFocusTrapFactory` instead.\n * @breaking-change 11.0.0\n */\nclass FocusTrapFactory {\n    constructor(_checker, _ngZone, _document) {\n        this._checker = _checker;\n        this._ngZone = _ngZone;\n        this._document = _document;\n    }\n    /**\n     * Creates a focus-trapped region around the given element.\n     * @param element The element around which focus will be trapped.\n     * @param deferCaptureElements Defers the creation of focus-capturing elements to be done\n     *     manually by the user.\n     * @returns The created focus trap instance.\n     */\n    create(element, deferCaptureElements = false) {\n        return new FocusTrap(element, this._checker, this._ngZone, this._document, deferCaptureElements);\n    }\n}\nFocusTrapFactory.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: FocusTrapFactory, deps: [{ token: InteractivityChecker }, { token: i0.NgZone }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable });\nFocusTrapFactory.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: FocusTrapFactory, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: FocusTrapFactory, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return [{ type: InteractivityChecker }, { type: i0.NgZone }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }]; } });\n/** Directive for trapping focus within a region. */\nclass CdkTrapFocus {\n    /** Whether the focus trap is active. */\n    get enabled() {\n        return this.focusTrap.enabled;\n    }\n    set enabled(value) {\n        this.focusTrap.enabled = coerceBooleanProperty(value);\n    }\n    /**\n     * Whether the directive should automatically move focus into the trapped region upon\n     * initialization and return focus to the previous activeElement upon destruction.\n     */\n    get autoCapture() {\n        return this._autoCapture;\n    }\n    set autoCapture(value) {\n        this._autoCapture = coerceBooleanProperty(value);\n    }\n    constructor(_elementRef, _focusTrapFactory, \n    /**\n     * @deprecated No longer being used. To be removed.\n     * @breaking-change 13.0.0\n     */\n    _document) {\n        this._elementRef = _elementRef;\n        this._focusTrapFactory = _focusTrapFactory;\n        /** Previously focused element to restore focus to upon destroy when using autoCapture. */\n        this._previouslyFocusedElement = null;\n        this.focusTrap = this._focusTrapFactory.create(this._elementRef.nativeElement, true);\n    }\n    ngOnDestroy() {\n        this.focusTrap.destroy();\n        // If we stored a previously focused element when using autoCapture, return focus to that\n        // element now that the trapped region is being destroyed.\n        if (this._previouslyFocusedElement) {\n            this._previouslyFocusedElement.focus();\n            this._previouslyFocusedElement = null;\n        }\n    }\n    ngAfterContentInit() {\n        this.focusTrap.attachAnchors();\n        if (this.autoCapture) {\n            this._captureFocus();\n        }\n    }\n    ngDoCheck() {\n        if (!this.focusTrap.hasAttached()) {\n            this.focusTrap.attachAnchors();\n        }\n    }\n    ngOnChanges(changes) {\n        const autoCaptureChange = changes['autoCapture'];\n        if (autoCaptureChange &&\n            !autoCaptureChange.firstChange &&\n            this.autoCapture &&\n            this.focusTrap.hasAttached()) {\n            this._captureFocus();\n        }\n    }\n    _captureFocus() {\n        this._previouslyFocusedElement = _getFocusedElementPierceShadowDom();\n        this.focusTrap.focusInitialElementWhenReady();\n    }\n}\nCdkTrapFocus.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: CdkTrapFocus, deps: [{ token: i0.ElementRef }, { token: FocusTrapFactory }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Directive });\nCdkTrapFocus.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", type: CdkTrapFocus, selector: \"[cdkTrapFocus]\", inputs: { enabled: [\"cdkTrapFocus\", \"enabled\"], autoCapture: [\"cdkTrapFocusAutoCapture\", \"autoCapture\"] }, exportAs: [\"cdkTrapFocus\"], usesOnChanges: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: CdkTrapFocus, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[cdkTrapFocus]',\n                    exportAs: 'cdkTrapFocus',\n                }]\n        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: FocusTrapFactory }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }]; }, propDecorators: { enabled: [{\n                type: Input,\n                args: ['cdkTrapFocus']\n            }], autoCapture: [{\n                type: Input,\n                args: ['cdkTrapFocusAutoCapture']\n            }] } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Class that allows for trapping focus within a DOM element.\n *\n * This class uses a strategy pattern that determines how it traps focus.\n * See FocusTrapInertStrategy.\n */\nclass ConfigurableFocusTrap extends FocusTrap {\n    /** Whether the FocusTrap is enabled. */\n    get enabled() {\n        return this._enabled;\n    }\n    set enabled(value) {\n        this._enabled = value;\n        if (this._enabled) {\n            this._focusTrapManager.register(this);\n        }\n        else {\n            this._focusTrapManager.deregister(this);\n        }\n    }\n    constructor(_element, _checker, _ngZone, _document, _focusTrapManager, _inertStrategy, config) {\n        super(_element, _checker, _ngZone, _document, config.defer);\n        this._focusTrapManager = _focusTrapManager;\n        this._inertStrategy = _inertStrategy;\n        this._focusTrapManager.register(this);\n    }\n    /** Notifies the FocusTrapManager that this FocusTrap will be destroyed. */\n    destroy() {\n        this._focusTrapManager.deregister(this);\n        super.destroy();\n    }\n    /** @docs-private Implemented as part of ManagedFocusTrap. */\n    _enable() {\n        this._inertStrategy.preventFocus(this);\n        this.toggleAnchors(true);\n    }\n    /** @docs-private Implemented as part of ManagedFocusTrap. */\n    _disable() {\n        this._inertStrategy.allowFocus(this);\n        this.toggleAnchors(false);\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** The injection token used to specify the inert strategy. */\nconst FOCUS_TRAP_INERT_STRATEGY = new InjectionToken('FOCUS_TRAP_INERT_STRATEGY');\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Lightweight FocusTrapInertStrategy that adds a document focus event\n * listener to redirect focus back inside the FocusTrap.\n */\nclass EventListenerFocusTrapInertStrategy {\n    constructor() {\n        /** Focus event handler. */\n        this._listener = null;\n    }\n    /** Adds a document event listener that keeps focus inside the FocusTrap. */\n    preventFocus(focusTrap) {\n        // Ensure there's only one listener per document\n        if (this._listener) {\n            focusTrap._document.removeEventListener('focus', this._listener, true);\n        }\n        this._listener = (e) => this._trapFocus(focusTrap, e);\n        focusTrap._ngZone.runOutsideAngular(() => {\n            focusTrap._document.addEventListener('focus', this._listener, true);\n        });\n    }\n    /** Removes the event listener added in preventFocus. */\n    allowFocus(focusTrap) {\n        if (!this._listener) {\n            return;\n        }\n        focusTrap._document.removeEventListener('focus', this._listener, true);\n        this._listener = null;\n    }\n    /**\n     * Refocuses the first element in the FocusTrap if the focus event target was outside\n     * the FocusTrap.\n     *\n     * This is an event listener callback. The event listener is added in runOutsideAngular,\n     * so all this code runs outside Angular as well.\n     */\n    _trapFocus(focusTrap, event) {\n        const target = event.target;\n        const focusTrapRoot = focusTrap._element;\n        // Don't refocus if target was in an overlay, because the overlay might be associated\n        // with an element inside the FocusTrap, ex. mat-select.\n        if (target && !focusTrapRoot.contains(target) && !target.closest?.('div.cdk-overlay-pane')) {\n            // Some legacy FocusTrap usages have logic that focuses some element on the page\n            // just before FocusTrap is destroyed. For backwards compatibility, wait\n            // to be sure FocusTrap is still enabled before refocusing.\n            setTimeout(() => {\n                // Check whether focus wasn't put back into the focus trap while the timeout was pending.\n                if (focusTrap.enabled && !focusTrapRoot.contains(focusTrap._document.activeElement)) {\n                    focusTrap.focusFirstTabbableElement();\n                }\n            });\n        }\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Injectable that ensures only the most recently enabled FocusTrap is active. */\nclass FocusTrapManager {\n    constructor() {\n        // A stack of the FocusTraps on the page. Only the FocusTrap at the\n        // top of the stack is active.\n        this._focusTrapStack = [];\n    }\n    /**\n     * Disables the FocusTrap at the top of the stack, and then pushes\n     * the new FocusTrap onto the stack.\n     */\n    register(focusTrap) {\n        // Dedupe focusTraps that register multiple times.\n        this._focusTrapStack = this._focusTrapStack.filter(ft => ft !== focusTrap);\n        let stack = this._focusTrapStack;\n        if (stack.length) {\n            stack[stack.length - 1]._disable();\n        }\n        stack.push(focusTrap);\n        focusTrap._enable();\n    }\n    /**\n     * Removes the FocusTrap from the stack, and activates the\n     * FocusTrap that is the new top of the stack.\n     */\n    deregister(focusTrap) {\n        focusTrap._disable();\n        const stack = this._focusTrapStack;\n        const i = stack.indexOf(focusTrap);\n        if (i !== -1) {\n            stack.splice(i, 1);\n            if (stack.length) {\n                stack[stack.length - 1]._enable();\n            }\n        }\n    }\n}\nFocusTrapManager.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: FocusTrapManager, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nFocusTrapManager.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: FocusTrapManager, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: FocusTrapManager, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }] });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Factory that allows easy instantiation of configurable focus traps. */\nclass ConfigurableFocusTrapFactory {\n    constructor(_checker, _ngZone, _focusTrapManager, _document, _inertStrategy) {\n        this._checker = _checker;\n        this._ngZone = _ngZone;\n        this._focusTrapManager = _focusTrapManager;\n        this._document = _document;\n        // TODO split up the strategies into different modules, similar to DateAdapter.\n        this._inertStrategy = _inertStrategy || new EventListenerFocusTrapInertStrategy();\n    }\n    create(element, config = { defer: false }) {\n        let configObject;\n        if (typeof config === 'boolean') {\n            configObject = { defer: config };\n        }\n        else {\n            configObject = config;\n        }\n        return new ConfigurableFocusTrap(element, this._checker, this._ngZone, this._document, this._focusTrapManager, this._inertStrategy, configObject);\n    }\n}\nConfigurableFocusTrapFactory.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: ConfigurableFocusTrapFactory, deps: [{ token: InteractivityChecker }, { token: i0.NgZone }, { token: FocusTrapManager }, { token: DOCUMENT }, { token: FOCUS_TRAP_INERT_STRATEGY, optional: true }], target: i0.ɵɵFactoryTarget.Injectable });\nConfigurableFocusTrapFactory.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: ConfigurableFocusTrapFactory, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: ConfigurableFocusTrapFactory, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return [{ type: InteractivityChecker }, { type: i0.NgZone }, { type: FocusTrapManager }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [FOCUS_TRAP_INERT_STRATEGY]\n                }] }]; } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Gets whether an event could be a faked `mousedown` event dispatched by a screen reader. */\nfunction isFakeMousedownFromScreenReader(event) {\n    // Some screen readers will dispatch a fake `mousedown` event when pressing enter or space on\n    // a clickable element. We can distinguish these events when both `offsetX` and `offsetY` are\n    // zero or `event.buttons` is zero, depending on the browser:\n    // - `event.buttons` works on Firefox, but fails on Chrome.\n    // - `offsetX` and `offsetY` work on Chrome, but fail on Firefox.\n    // Note that there's an edge case where the user could click the 0x0 spot of the\n    // screen themselves, but that is unlikely to contain interactive elements.\n    return event.buttons === 0 || (event.offsetX === 0 && event.offsetY === 0);\n}\n/** Gets whether an event could be a faked `touchstart` event dispatched by a screen reader. */\nfunction isFakeTouchstartFromScreenReader(event) {\n    const touch = (event.touches && event.touches[0]) || (event.changedTouches && event.changedTouches[0]);\n    // A fake `touchstart` can be distinguished from a real one by looking at the `identifier`\n    // which is typically >= 0 on a real device versus -1 from a screen reader. Just to be safe,\n    // we can also look at `radiusX` and `radiusY`. This behavior was observed against a Windows 10\n    // device with a touch screen running NVDA v2020.4 and Firefox 85 or Chrome 88.\n    return (!!touch &&\n        touch.identifier === -1 &&\n        (touch.radiusX == null || touch.radiusX === 1) &&\n        (touch.radiusY == null || touch.radiusY === 1));\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Injectable options for the InputModalityDetector. These are shallowly merged with the default\n * options.\n */\nconst INPUT_MODALITY_DETECTOR_OPTIONS = new InjectionToken('cdk-input-modality-detector-options');\n/**\n * Default options for the InputModalityDetector.\n *\n * Modifier keys are ignored by default (i.e. when pressed won't cause the service to detect\n * keyboard input modality) for two reasons:\n *\n * 1. Modifier keys are commonly used with mouse to perform actions such as 'right click' or 'open\n *    in new tab', and are thus less representative of actual keyboard interaction.\n * 2. VoiceOver triggers some keyboard events when linearly navigating with Control + Option (but\n *    confusingly not with Caps Lock). Thus, to have parity with other screen readers, we ignore\n *    these keys so as to not update the input modality.\n *\n * Note that we do not by default ignore the right Meta key on Safari because it has the same key\n * code as the ContextMenu key on other browsers. When we switch to using event.key, we can\n * distinguish between the two.\n */\nconst INPUT_MODALITY_DETECTOR_DEFAULT_OPTIONS = {\n    ignoreKeys: [ALT, CONTROL, MAC_META, META, SHIFT],\n};\n/**\n * The amount of time needed to pass after a touchstart event in order for a subsequent mousedown\n * event to be attributed as mouse and not touch.\n *\n * This is the value used by AngularJS Material. Through trial and error (on iPhone 6S) they found\n * that a value of around 650ms seems appropriate.\n */\nconst TOUCH_BUFFER_MS = 650;\n/**\n * Event listener options that enable capturing and also mark the listener as passive if the browser\n * supports it.\n */\nconst modalityEventListenerOptions = normalizePassiveListenerOptions({\n    passive: true,\n    capture: true,\n});\n/**\n * Service that detects the user's input modality.\n *\n * This service does not update the input modality when a user navigates with a screen reader\n * (e.g. linear navigation with VoiceOver, object navigation / browse mode with NVDA, virtual PC\n * cursor mode with JAWS). This is in part due to technical limitations (i.e. keyboard events do not\n * fire as expected in these modes) but is also arguably the correct behavior. Navigating with a\n * screen reader is akin to visually scanning a page, and should not be interpreted as actual user\n * input interaction.\n *\n * When a user is not navigating but *interacting* with a screen reader, this service attempts to\n * update the input modality to keyboard, but in general this service's behavior is largely\n * undefined.\n */\nclass InputModalityDetector {\n    /** The most recently detected input modality. */\n    get mostRecentModality() {\n        return this._modality.value;\n    }\n    constructor(_platform, ngZone, document, options) {\n        this._platform = _platform;\n        /**\n         * The most recently detected input modality event target. Is null if no input modality has been\n         * detected or if the associated event target is null for some unknown reason.\n         */\n        this._mostRecentTarget = null;\n        /** The underlying BehaviorSubject that emits whenever an input modality is detected. */\n        this._modality = new BehaviorSubject(null);\n        /**\n         * The timestamp of the last touch input modality. Used to determine whether mousedown events\n         * should be attributed to mouse or touch.\n         */\n        this._lastTouchMs = 0;\n        /**\n         * Handles keydown events. Must be an arrow function in order to preserve the context when it gets\n         * bound.\n         */\n        this._onKeydown = (event) => {\n            // If this is one of the keys we should ignore, then ignore it and don't update the input\n            // modality to keyboard.\n            if (this._options?.ignoreKeys?.some(keyCode => keyCode === event.keyCode)) {\n                return;\n            }\n            this._modality.next('keyboard');\n            this._mostRecentTarget = _getEventTarget(event);\n        };\n        /**\n         * Handles mousedown events. Must be an arrow function in order to preserve the context when it\n         * gets bound.\n         */\n        this._onMousedown = (event) => {\n            // Touches trigger both touch and mouse events, so we need to distinguish between mouse events\n            // that were triggered via mouse vs touch. To do so, check if the mouse event occurs closely\n            // after the previous touch event.\n            if (Date.now() - this._lastTouchMs < TOUCH_BUFFER_MS) {\n                return;\n            }\n            // Fake mousedown events are fired by some screen readers when controls are activated by the\n            // screen reader. Attribute them to keyboard input modality.\n            this._modality.next(isFakeMousedownFromScreenReader(event) ? 'keyboard' : 'mouse');\n            this._mostRecentTarget = _getEventTarget(event);\n        };\n        /**\n         * Handles touchstart events. Must be an arrow function in order to preserve the context when it\n         * gets bound.\n         */\n        this._onTouchstart = (event) => {\n            // Same scenario as mentioned in _onMousedown, but on touch screen devices, fake touchstart\n            // events are fired. Again, attribute to keyboard input modality.\n            if (isFakeTouchstartFromScreenReader(event)) {\n                this._modality.next('keyboard');\n                return;\n            }\n            // Store the timestamp of this touch event, as it's used to distinguish between mouse events\n            // triggered via mouse vs touch.\n            this._lastTouchMs = Date.now();\n            this._modality.next('touch');\n            this._mostRecentTarget = _getEventTarget(event);\n        };\n        this._options = {\n            ...INPUT_MODALITY_DETECTOR_DEFAULT_OPTIONS,\n            ...options,\n        };\n        // Skip the first emission as it's null.\n        this.modalityDetected = this._modality.pipe(skip(1));\n        this.modalityChanged = this.modalityDetected.pipe(distinctUntilChanged());\n        // If we're not in a browser, this service should do nothing, as there's no relevant input\n        // modality to detect.\n        if (_platform.isBrowser) {\n            ngZone.runOutsideAngular(() => {\n                document.addEventListener('keydown', this._onKeydown, modalityEventListenerOptions);\n                document.addEventListener('mousedown', this._onMousedown, modalityEventListenerOptions);\n                document.addEventListener('touchstart', this._onTouchstart, modalityEventListenerOptions);\n            });\n        }\n    }\n    ngOnDestroy() {\n        this._modality.complete();\n        if (this._platform.isBrowser) {\n            document.removeEventListener('keydown', this._onKeydown, modalityEventListenerOptions);\n            document.removeEventListener('mousedown', this._onMousedown, modalityEventListenerOptions);\n            document.removeEventListener('touchstart', this._onTouchstart, modalityEventListenerOptions);\n        }\n    }\n}\nInputModalityDetector.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: InputModalityDetector, deps: [{ token: i1.Platform }, { token: i0.NgZone }, { token: DOCUMENT }, { token: INPUT_MODALITY_DETECTOR_OPTIONS, optional: true }], target: i0.ɵɵFactoryTarget.Injectable });\nInputModalityDetector.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: InputModalityDetector, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: InputModalityDetector, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return [{ type: i1.Platform }, { type: i0.NgZone }, { type: Document, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [INPUT_MODALITY_DETECTOR_OPTIONS]\n                }] }]; } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nconst LIVE_ANNOUNCER_ELEMENT_TOKEN = new InjectionToken('liveAnnouncerElement', {\n    providedIn: 'root',\n    factory: LIVE_ANNOUNCER_ELEMENT_TOKEN_FACTORY,\n});\n/** @docs-private */\nfunction LIVE_ANNOUNCER_ELEMENT_TOKEN_FACTORY() {\n    return null;\n}\n/** Injection token that can be used to configure the default options for the LiveAnnouncer. */\nconst LIVE_ANNOUNCER_DEFAULT_OPTIONS = new InjectionToken('LIVE_ANNOUNCER_DEFAULT_OPTIONS');\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nlet uniqueIds = 0;\nclass LiveAnnouncer {\n    constructor(elementToken, _ngZone, _document, _defaultOptions) {\n        this._ngZone = _ngZone;\n        this._defaultOptions = _defaultOptions;\n        // We inject the live element and document as `any` because the constructor signature cannot\n        // reference browser globals (HTMLElement, Document) on non-browser environments, since having\n        // a class decorator causes TypeScript to preserve the constructor signature types.\n        this._document = _document;\n        this._liveElement = elementToken || this._createLiveElement();\n    }\n    announce(message, ...args) {\n        const defaultOptions = this._defaultOptions;\n        let politeness;\n        let duration;\n        if (args.length === 1 && typeof args[0] === 'number') {\n            duration = args[0];\n        }\n        else {\n            [politeness, duration] = args;\n        }\n        this.clear();\n        clearTimeout(this._previousTimeout);\n        if (!politeness) {\n            politeness =\n                defaultOptions && defaultOptions.politeness ? defaultOptions.politeness : 'polite';\n        }\n        if (duration == null && defaultOptions) {\n            duration = defaultOptions.duration;\n        }\n        // TODO: ensure changing the politeness works on all environments we support.\n        this._liveElement.setAttribute('aria-live', politeness);\n        if (this._liveElement.id) {\n            this._exposeAnnouncerToModals(this._liveElement.id);\n        }\n        // This 100ms timeout is necessary for some browser + screen-reader combinations:\n        // - Both JAWS and NVDA over IE11 will not announce anything without a non-zero timeout.\n        // - With Chrome and IE11 with NVDA or JAWS, a repeated (identical) message won't be read a\n        //   second time without clearing and then using a non-zero delay.\n        // (using JAWS 17 at time of this writing).\n        return this._ngZone.runOutsideAngular(() => {\n            if (!this._currentPromise) {\n                this._currentPromise = new Promise(resolve => (this._currentResolve = resolve));\n            }\n            clearTimeout(this._previousTimeout);\n            this._previousTimeout = setTimeout(() => {\n                this._liveElement.textContent = message;\n                if (typeof duration === 'number') {\n                    this._previousTimeout = setTimeout(() => this.clear(), duration);\n                }\n                this._currentResolve();\n                this._currentPromise = this._currentResolve = undefined;\n            }, 100);\n            return this._currentPromise;\n        });\n    }\n    /**\n     * Clears the current text from the announcer element. Can be used to prevent\n     * screen readers from reading the text out again while the user is going\n     * through the page landmarks.\n     */\n    clear() {\n        if (this._liveElement) {\n            this._liveElement.textContent = '';\n        }\n    }\n    ngOnDestroy() {\n        clearTimeout(this._previousTimeout);\n        this._liveElement?.remove();\n        this._liveElement = null;\n        this._currentResolve?.();\n        this._currentPromise = this._currentResolve = undefined;\n    }\n    _createLiveElement() {\n        const elementClass = 'cdk-live-announcer-element';\n        const previousElements = this._document.getElementsByClassName(elementClass);\n        const liveEl = this._document.createElement('div');\n        // Remove any old containers. This can happen when coming in from a server-side-rendered page.\n        for (let i = 0; i < previousElements.length; i++) {\n            previousElements[i].remove();\n        }\n        liveEl.classList.add(elementClass);\n        liveEl.classList.add('cdk-visually-hidden');\n        liveEl.setAttribute('aria-atomic', 'true');\n        liveEl.setAttribute('aria-live', 'polite');\n        liveEl.id = `cdk-live-announcer-${uniqueIds++}`;\n        this._document.body.appendChild(liveEl);\n        return liveEl;\n    }\n    /**\n     * Some browsers won't expose the accessibility node of the live announcer element if there is an\n     * `aria-modal` and the live announcer is outside of it. This method works around the issue by\n     * pointing the `aria-owns` of all modals to the live announcer element.\n     */\n    _exposeAnnouncerToModals(id) {\n        // Note that the selector here is limited to CDK overlays at the moment in order to reduce the\n        // section of the DOM we need to look through. This should cover all the cases we support, but\n        // the selector can be expanded if it turns out to be too narrow.\n        const modals = this._document.querySelectorAll('body > .cdk-overlay-container [aria-modal=\"true\"]');\n        for (let i = 0; i < modals.length; i++) {\n            const modal = modals[i];\n            const ariaOwns = modal.getAttribute('aria-owns');\n            if (!ariaOwns) {\n                modal.setAttribute('aria-owns', id);\n            }\n            else if (ariaOwns.indexOf(id) === -1) {\n                modal.setAttribute('aria-owns', ariaOwns + ' ' + id);\n            }\n        }\n    }\n}\nLiveAnnouncer.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: LiveAnnouncer, deps: [{ token: LIVE_ANNOUNCER_ELEMENT_TOKEN, optional: true }, { token: i0.NgZone }, { token: DOCUMENT }, { token: LIVE_ANNOUNCER_DEFAULT_OPTIONS, optional: true }], target: i0.ɵɵFactoryTarget.Injectable });\nLiveAnnouncer.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: LiveAnnouncer, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: LiveAnnouncer, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [LIVE_ANNOUNCER_ELEMENT_TOKEN]\n                }] }, { type: i0.NgZone }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [LIVE_ANNOUNCER_DEFAULT_OPTIONS]\n                }] }]; } });\n/**\n * A directive that works similarly to aria-live, but uses the LiveAnnouncer to ensure compatibility\n * with a wider range of browsers and screen readers.\n */\nclass CdkAriaLive {\n    /** The aria-live politeness level to use when announcing messages. */\n    get politeness() {\n        return this._politeness;\n    }\n    set politeness(value) {\n        this._politeness = value === 'off' || value === 'assertive' ? value : 'polite';\n        if (this._politeness === 'off') {\n            if (this._subscription) {\n                this._subscription.unsubscribe();\n                this._subscription = null;\n            }\n        }\n        else if (!this._subscription) {\n            this._subscription = this._ngZone.runOutsideAngular(() => {\n                return this._contentObserver.observe(this._elementRef).subscribe(() => {\n                    // Note that we use textContent here, rather than innerText, in order to avoid a reflow.\n                    const elementText = this._elementRef.nativeElement.textContent;\n                    // The `MutationObserver` fires also for attribute\n                    // changes which we don't want to announce.\n                    if (elementText !== this._previousAnnouncedText) {\n                        this._liveAnnouncer.announce(elementText, this._politeness, this.duration);\n                        this._previousAnnouncedText = elementText;\n                    }\n                });\n            });\n        }\n    }\n    constructor(_elementRef, _liveAnnouncer, _contentObserver, _ngZone) {\n        this._elementRef = _elementRef;\n        this._liveAnnouncer = _liveAnnouncer;\n        this._contentObserver = _contentObserver;\n        this._ngZone = _ngZone;\n        this._politeness = 'polite';\n    }\n    ngOnDestroy() {\n        if (this._subscription) {\n            this._subscription.unsubscribe();\n        }\n    }\n}\nCdkAriaLive.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: CdkAriaLive, deps: [{ token: i0.ElementRef }, { token: LiveAnnouncer }, { token: i1$1.ContentObserver }, { token: i0.NgZone }], target: i0.ɵɵFactoryTarget.Directive });\nCdkAriaLive.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", type: CdkAriaLive, selector: \"[cdkAriaLive]\", inputs: { politeness: [\"cdkAriaLive\", \"politeness\"], duration: [\"cdkAriaLiveDuration\", \"duration\"] }, exportAs: [\"cdkAriaLive\"], ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: CdkAriaLive, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[cdkAriaLive]',\n                    exportAs: 'cdkAriaLive',\n                }]\n        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: LiveAnnouncer }, { type: i1$1.ContentObserver }, { type: i0.NgZone }]; }, propDecorators: { politeness: [{\n                type: Input,\n                args: ['cdkAriaLive']\n            }], duration: [{\n                type: Input,\n                args: ['cdkAriaLiveDuration']\n            }] } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** InjectionToken for FocusMonitorOptions. */\nconst FOCUS_MONITOR_DEFAULT_OPTIONS = new InjectionToken('cdk-focus-monitor-default-options');\n/**\n * Event listener options that enable capturing and also\n * mark the listener as passive if the browser supports it.\n */\nconst captureEventListenerOptions = normalizePassiveListenerOptions({\n    passive: true,\n    capture: true,\n});\n/** Monitors mouse and keyboard events to determine the cause of focus events. */\nclass FocusMonitor {\n    constructor(_ngZone, _platform, _inputModalityDetector, \n    /** @breaking-change 11.0.0 make document required */\n    document, options) {\n        this._ngZone = _ngZone;\n        this._platform = _platform;\n        this._inputModalityDetector = _inputModalityDetector;\n        /** The focus origin that the next focus event is a result of. */\n        this._origin = null;\n        /** Whether the window has just been focused. */\n        this._windowFocused = false;\n        /**\n         * Whether the origin was determined via a touch interaction. Necessary as properly attributing\n         * focus events to touch interactions requires special logic.\n         */\n        this._originFromTouchInteraction = false;\n        /** Map of elements being monitored to their info. */\n        this._elementInfo = new Map();\n        /** The number of elements currently being monitored. */\n        this._monitoredElementCount = 0;\n        /**\n         * Keeps track of the root nodes to which we've currently bound a focus/blur handler,\n         * as well as the number of monitored elements that they contain. We have to treat focus/blur\n         * handlers differently from the rest of the events, because the browser won't emit events\n         * to the document when focus moves inside of a shadow root.\n         */\n        this._rootNodeFocusListenerCount = new Map();\n        /**\n         * Event listener for `focus` events on the window.\n         * Needs to be an arrow function in order to preserve the context when it gets bound.\n         */\n        this._windowFocusListener = () => {\n            // Make a note of when the window regains focus, so we can\n            // restore the origin info for the focused element.\n            this._windowFocused = true;\n            this._windowFocusTimeoutId = window.setTimeout(() => (this._windowFocused = false));\n        };\n        /** Subject for stopping our InputModalityDetector subscription. */\n        this._stopInputModalityDetector = new Subject();\n        /**\n         * Event listener for `focus` and 'blur' events on the document.\n         * Needs to be an arrow function in order to preserve the context when it gets bound.\n         */\n        this._rootNodeFocusAndBlurListener = (event) => {\n            const target = _getEventTarget(event);\n            // We need to walk up the ancestor chain in order to support `checkChildren`.\n            for (let element = target; element; element = element.parentElement) {\n                if (event.type === 'focus') {\n                    this._onFocus(event, element);\n                }\n                else {\n                    this._onBlur(event, element);\n                }\n            }\n        };\n        this._document = document;\n        this._detectionMode = options?.detectionMode || 0 /* FocusMonitorDetectionMode.IMMEDIATE */;\n    }\n    monitor(element, checkChildren = false) {\n        const nativeElement = coerceElement(element);\n        // Do nothing if we're not on the browser platform or the passed in node isn't an element.\n        if (!this._platform.isBrowser || nativeElement.nodeType !== 1) {\n            return of(null);\n        }\n        // If the element is inside the shadow DOM, we need to bind our focus/blur listeners to\n        // the shadow root, rather than the `document`, because the browser won't emit focus events\n        // to the `document`, if focus is moving within the same shadow root.\n        const rootNode = _getShadowRoot(nativeElement) || this._getDocument();\n        const cachedInfo = this._elementInfo.get(nativeElement);\n        // Check if we're already monitoring this element.\n        if (cachedInfo) {\n            if (checkChildren) {\n                // TODO(COMP-318): this can be problematic, because it'll turn all non-checkChildren\n                // observers into ones that behave as if `checkChildren` was turned on. We need a more\n                // robust solution.\n                cachedInfo.checkChildren = true;\n            }\n            return cachedInfo.subject;\n        }\n        // Create monitored element info.\n        const info = {\n            checkChildren: checkChildren,\n            subject: new Subject(),\n            rootNode,\n        };\n        this._elementInfo.set(nativeElement, info);\n        this._registerGlobalListeners(info);\n        return info.subject;\n    }\n    stopMonitoring(element) {\n        const nativeElement = coerceElement(element);\n        const elementInfo = this._elementInfo.get(nativeElement);\n        if (elementInfo) {\n            elementInfo.subject.complete();\n            this._setClasses(nativeElement);\n            this._elementInfo.delete(nativeElement);\n            this._removeGlobalListeners(elementInfo);\n        }\n    }\n    focusVia(element, origin, options) {\n        const nativeElement = coerceElement(element);\n        const focusedElement = this._getDocument().activeElement;\n        // If the element is focused already, calling `focus` again won't trigger the event listener\n        // which means that the focus classes won't be updated. If that's the case, update the classes\n        // directly without waiting for an event.\n        if (nativeElement === focusedElement) {\n            this._getClosestElementsInfo(nativeElement).forEach(([currentElement, info]) => this._originChanged(currentElement, origin, info));\n        }\n        else {\n            this._setOrigin(origin);\n            // `focus` isn't available on the server\n            if (typeof nativeElement.focus === 'function') {\n                nativeElement.focus(options);\n            }\n        }\n    }\n    ngOnDestroy() {\n        this._elementInfo.forEach((_info, element) => this.stopMonitoring(element));\n    }\n    /** Access injected document if available or fallback to global document reference */\n    _getDocument() {\n        return this._document || document;\n    }\n    /** Use defaultView of injected document if available or fallback to global window reference */\n    _getWindow() {\n        const doc = this._getDocument();\n        return doc.defaultView || window;\n    }\n    _getFocusOrigin(focusEventTarget) {\n        if (this._origin) {\n            // If the origin was realized via a touch interaction, we need to perform additional checks\n            // to determine whether the focus origin should be attributed to touch or program.\n            if (this._originFromTouchInteraction) {\n                return this._shouldBeAttributedToTouch(focusEventTarget) ? 'touch' : 'program';\n            }\n            else {\n                return this._origin;\n            }\n        }\n        // If the window has just regained focus, we can restore the most recent origin from before the\n        // window blurred. Otherwise, we've reached the point where we can't identify the source of the\n        // focus. This typically means one of two things happened:\n        //\n        // 1) The element was programmatically focused, or\n        // 2) The element was focused via screen reader navigation (which generally doesn't fire\n        //    events).\n        //\n        // Because we can't distinguish between these two cases, we default to setting `program`.\n        if (this._windowFocused && this._lastFocusOrigin) {\n            return this._lastFocusOrigin;\n        }\n        // If the interaction is coming from an input label, we consider it a mouse interactions.\n        // This is a special case where focus moves on `click`, rather than `mousedown` which breaks\n        // our detection, because all our assumptions are for `mousedown`. We need to handle this\n        // special case, because it's very common for checkboxes and radio buttons.\n        if (focusEventTarget && this._isLastInteractionFromInputLabel(focusEventTarget)) {\n            return 'mouse';\n        }\n        return 'program';\n    }\n    /**\n     * Returns whether the focus event should be attributed to touch. Recall that in IMMEDIATE mode, a\n     * touch origin isn't immediately reset at the next tick (see _setOrigin). This means that when we\n     * handle a focus event following a touch interaction, we need to determine whether (1) the focus\n     * event was directly caused by the touch interaction or (2) the focus event was caused by a\n     * subsequent programmatic focus call triggered by the touch interaction.\n     * @param focusEventTarget The target of the focus event under examination.\n     */\n    _shouldBeAttributedToTouch(focusEventTarget) {\n        // Please note that this check is not perfect. Consider the following edge case:\n        //\n        // <div #parent tabindex=\"0\">\n        //   <div #child tabindex=\"0\" (click)=\"#parent.focus()\"></div>\n        // </div>\n        //\n        // Suppose there is a FocusMonitor in IMMEDIATE mode attached to #parent. When the user touches\n        // #child, #parent is programmatically focused. This code will attribute the focus to touch\n        // instead of program. This is a relatively minor edge-case that can be worked around by using\n        // focusVia(parent, 'program') to focus #parent.\n        return (this._detectionMode === 1 /* FocusMonitorDetectionMode.EVENTUAL */ ||\n            !!focusEventTarget?.contains(this._inputModalityDetector._mostRecentTarget));\n    }\n    /**\n     * Sets the focus classes on the element based on the given focus origin.\n     * @param element The element to update the classes on.\n     * @param origin The focus origin.\n     */\n    _setClasses(element, origin) {\n        element.classList.toggle('cdk-focused', !!origin);\n        element.classList.toggle('cdk-touch-focused', origin === 'touch');\n        element.classList.toggle('cdk-keyboard-focused', origin === 'keyboard');\n        element.classList.toggle('cdk-mouse-focused', origin === 'mouse');\n        element.classList.toggle('cdk-program-focused', origin === 'program');\n    }\n    /**\n     * Updates the focus origin. If we're using immediate detection mode, we schedule an async\n     * function to clear the origin at the end of a timeout. The duration of the timeout depends on\n     * the origin being set.\n     * @param origin The origin to set.\n     * @param isFromInteraction Whether we are setting the origin from an interaction event.\n     */\n    _setOrigin(origin, isFromInteraction = false) {\n        this._ngZone.runOutsideAngular(() => {\n            this._origin = origin;\n            this._originFromTouchInteraction = origin === 'touch' && isFromInteraction;\n            // If we're in IMMEDIATE mode, reset the origin at the next tick (or in `TOUCH_BUFFER_MS` ms\n            // for a touch event). We reset the origin at the next tick because Firefox focuses one tick\n            // after the interaction event. We wait `TOUCH_BUFFER_MS` ms before resetting the origin for\n            // a touch event because when a touch event is fired, the associated focus event isn't yet in\n            // the event queue. Before doing so, clear any pending timeouts.\n            if (this._detectionMode === 0 /* FocusMonitorDetectionMode.IMMEDIATE */) {\n                clearTimeout(this._originTimeoutId);\n                const ms = this._originFromTouchInteraction ? TOUCH_BUFFER_MS : 1;\n                this._originTimeoutId = setTimeout(() => (this._origin = null), ms);\n            }\n        });\n    }\n    /**\n     * Handles focus events on a registered element.\n     * @param event The focus event.\n     * @param element The monitored element.\n     */\n    _onFocus(event, element) {\n        // NOTE(mmalerba): We currently set the classes based on the focus origin of the most recent\n        // focus event affecting the monitored element. If we want to use the origin of the first event\n        // instead we should check for the cdk-focused class here and return if the element already has\n        // it. (This only matters for elements that have includesChildren = true).\n        // If we are not counting child-element-focus as focused, make sure that the event target is the\n        // monitored element itself.\n        const elementInfo = this._elementInfo.get(element);\n        const focusEventTarget = _getEventTarget(event);\n        if (!elementInfo || (!elementInfo.checkChildren && element !== focusEventTarget)) {\n            return;\n        }\n        this._originChanged(element, this._getFocusOrigin(focusEventTarget), elementInfo);\n    }\n    /**\n     * Handles blur events on a registered element.\n     * @param event The blur event.\n     * @param element The monitored element.\n     */\n    _onBlur(event, element) {\n        // If we are counting child-element-focus as focused, make sure that we aren't just blurring in\n        // order to focus another child of the monitored element.\n        const elementInfo = this._elementInfo.get(element);\n        if (!elementInfo ||\n            (elementInfo.checkChildren &&\n                event.relatedTarget instanceof Node &&\n                element.contains(event.relatedTarget))) {\n            return;\n        }\n        this._setClasses(element);\n        this._emitOrigin(elementInfo, null);\n    }\n    _emitOrigin(info, origin) {\n        if (info.subject.observers.length) {\n            this._ngZone.run(() => info.subject.next(origin));\n        }\n    }\n    _registerGlobalListeners(elementInfo) {\n        if (!this._platform.isBrowser) {\n            return;\n        }\n        const rootNode = elementInfo.rootNode;\n        const rootNodeFocusListeners = this._rootNodeFocusListenerCount.get(rootNode) || 0;\n        if (!rootNodeFocusListeners) {\n            this._ngZone.runOutsideAngular(() => {\n                rootNode.addEventListener('focus', this._rootNodeFocusAndBlurListener, captureEventListenerOptions);\n                rootNode.addEventListener('blur', this._rootNodeFocusAndBlurListener, captureEventListenerOptions);\n            });\n        }\n        this._rootNodeFocusListenerCount.set(rootNode, rootNodeFocusListeners + 1);\n        // Register global listeners when first element is monitored.\n        if (++this._monitoredElementCount === 1) {\n            // Note: we listen to events in the capture phase so we\n            // can detect them even if the user stops propagation.\n            this._ngZone.runOutsideAngular(() => {\n                const window = this._getWindow();\n                window.addEventListener('focus', this._windowFocusListener);\n            });\n            // The InputModalityDetector is also just a collection of global listeners.\n            this._inputModalityDetector.modalityDetected\n                .pipe(takeUntil(this._stopInputModalityDetector))\n                .subscribe(modality => {\n                this._setOrigin(modality, true /* isFromInteraction */);\n            });\n        }\n    }\n    _removeGlobalListeners(elementInfo) {\n        const rootNode = elementInfo.rootNode;\n        if (this._rootNodeFocusListenerCount.has(rootNode)) {\n            const rootNodeFocusListeners = this._rootNodeFocusListenerCount.get(rootNode);\n            if (rootNodeFocusListeners > 1) {\n                this._rootNodeFocusListenerCount.set(rootNode, rootNodeFocusListeners - 1);\n            }\n            else {\n                rootNode.removeEventListener('focus', this._rootNodeFocusAndBlurListener, captureEventListenerOptions);\n                rootNode.removeEventListener('blur', this._rootNodeFocusAndBlurListener, captureEventListenerOptions);\n                this._rootNodeFocusListenerCount.delete(rootNode);\n            }\n        }\n        // Unregister global listeners when last element is unmonitored.\n        if (!--this._monitoredElementCount) {\n            const window = this._getWindow();\n            window.removeEventListener('focus', this._windowFocusListener);\n            // Equivalently, stop our InputModalityDetector subscription.\n            this._stopInputModalityDetector.next();\n            // Clear timeouts for all potentially pending timeouts to prevent the leaks.\n            clearTimeout(this._windowFocusTimeoutId);\n            clearTimeout(this._originTimeoutId);\n        }\n    }\n    /** Updates all the state on an element once its focus origin has changed. */\n    _originChanged(element, origin, elementInfo) {\n        this._setClasses(element, origin);\n        this._emitOrigin(elementInfo, origin);\n        this._lastFocusOrigin = origin;\n    }\n    /**\n     * Collects the `MonitoredElementInfo` of a particular element and\n     * all of its ancestors that have enabled `checkChildren`.\n     * @param element Element from which to start the search.\n     */\n    _getClosestElementsInfo(element) {\n        const results = [];\n        this._elementInfo.forEach((info, currentElement) => {\n            if (currentElement === element || (info.checkChildren && currentElement.contains(element))) {\n                results.push([currentElement, info]);\n            }\n        });\n        return results;\n    }\n    /**\n     * Returns whether an interaction is likely to have come from the user clicking the `label` of\n     * an `input` or `textarea` in order to focus it.\n     * @param focusEventTarget Target currently receiving focus.\n     */\n    _isLastInteractionFromInputLabel(focusEventTarget) {\n        const { _mostRecentTarget: mostRecentTarget, mostRecentModality } = this._inputModalityDetector;\n        // If the last interaction used the mouse on an element contained by one of the labels\n        // of an `input`/`textarea` that is currently focused, it is very likely that the\n        // user redirected focus using the label.\n        if (mostRecentModality !== 'mouse' ||\n            !mostRecentTarget ||\n            mostRecentTarget === focusEventTarget ||\n            (focusEventTarget.nodeName !== 'INPUT' && focusEventTarget.nodeName !== 'TEXTAREA') ||\n            focusEventTarget.disabled) {\n            return false;\n        }\n        const labels = focusEventTarget.labels;\n        if (labels) {\n            for (let i = 0; i < labels.length; i++) {\n                if (labels[i].contains(mostRecentTarget)) {\n                    return true;\n                }\n            }\n        }\n        return false;\n    }\n}\nFocusMonitor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: FocusMonitor, deps: [{ token: i0.NgZone }, { token: i1.Platform }, { token: InputModalityDetector }, { token: DOCUMENT, optional: true }, { token: FOCUS_MONITOR_DEFAULT_OPTIONS, optional: true }], target: i0.ɵɵFactoryTarget.Injectable });\nFocusMonitor.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: FocusMonitor, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: FocusMonitor, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return [{ type: i0.NgZone }, { type: i1.Platform }, { type: InputModalityDetector }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [FOCUS_MONITOR_DEFAULT_OPTIONS]\n                }] }]; } });\n/**\n * Directive that determines how a particular element was focused (via keyboard, mouse, touch, or\n * programmatically) and adds corresponding classes to the element.\n *\n * There are two variants of this directive:\n * 1) cdkMonitorElementFocus: does not consider an element to be focused if one of its children is\n *    focused.\n * 2) cdkMonitorSubtreeFocus: considers an element focused if it or any of its children are focused.\n */\nclass CdkMonitorFocus {\n    constructor(_elementRef, _focusMonitor) {\n        this._elementRef = _elementRef;\n        this._focusMonitor = _focusMonitor;\n        this._focusOrigin = null;\n        this.cdkFocusChange = new EventEmitter();\n    }\n    get focusOrigin() {\n        return this._focusOrigin;\n    }\n    ngAfterViewInit() {\n        const element = this._elementRef.nativeElement;\n        this._monitorSubscription = this._focusMonitor\n            .monitor(element, element.nodeType === 1 && element.hasAttribute('cdkMonitorSubtreeFocus'))\n            .subscribe(origin => {\n            this._focusOrigin = origin;\n            this.cdkFocusChange.emit(origin);\n        });\n    }\n    ngOnDestroy() {\n        this._focusMonitor.stopMonitoring(this._elementRef);\n        if (this._monitorSubscription) {\n            this._monitorSubscription.unsubscribe();\n        }\n    }\n}\nCdkMonitorFocus.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: CdkMonitorFocus, deps: [{ token: i0.ElementRef }, { token: FocusMonitor }], target: i0.ɵɵFactoryTarget.Directive });\nCdkMonitorFocus.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", type: CdkMonitorFocus, selector: \"[cdkMonitorElementFocus], [cdkMonitorSubtreeFocus]\", outputs: { cdkFocusChange: \"cdkFocusChange\" }, exportAs: [\"cdkMonitorFocus\"], ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: CdkMonitorFocus, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[cdkMonitorElementFocus], [cdkMonitorSubtreeFocus]',\n                    exportAs: 'cdkMonitorFocus',\n                }]\n        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: FocusMonitor }]; }, propDecorators: { cdkFocusChange: [{\n                type: Output\n            }] } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** CSS class applied to the document body when in black-on-white high-contrast mode. */\nconst BLACK_ON_WHITE_CSS_CLASS = 'cdk-high-contrast-black-on-white';\n/** CSS class applied to the document body when in white-on-black high-contrast mode. */\nconst WHITE_ON_BLACK_CSS_CLASS = 'cdk-high-contrast-white-on-black';\n/** CSS class applied to the document body when in high-contrast mode. */\nconst HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS = 'cdk-high-contrast-active';\n/**\n * Service to determine whether the browser is currently in a high-contrast-mode environment.\n *\n * Microsoft Windows supports an accessibility feature called \"High Contrast Mode\". This mode\n * changes the appearance of all applications, including web applications, to dramatically increase\n * contrast.\n *\n * IE, Edge, and Firefox currently support this mode. Chrome does not support Windows High Contrast\n * Mode. This service does not detect high-contrast mode as added by the Chrome \"High Contrast\"\n * browser extension.\n */\nclass HighContrastModeDetector {\n    constructor(_platform, document) {\n        this._platform = _platform;\n        this._document = document;\n        this._breakpointSubscription = inject(BreakpointObserver)\n            .observe('(forced-colors: active)')\n            .subscribe(() => {\n            if (this._hasCheckedHighContrastMode) {\n                this._hasCheckedHighContrastMode = false;\n                this._applyBodyHighContrastModeCssClasses();\n            }\n        });\n    }\n    /** Gets the current high-contrast-mode for the page. */\n    getHighContrastMode() {\n        if (!this._platform.isBrowser) {\n            return 0 /* HighContrastMode.NONE */;\n        }\n        // Create a test element with an arbitrary background-color that is neither black nor\n        // white; high-contrast mode will coerce the color to either black or white. Also ensure that\n        // appending the test element to the DOM does not affect layout by absolutely positioning it\n        const testElement = this._document.createElement('div');\n        testElement.style.backgroundColor = 'rgb(1,2,3)';\n        testElement.style.position = 'absolute';\n        this._document.body.appendChild(testElement);\n        // Get the computed style for the background color, collapsing spaces to normalize between\n        // browsers. Once we get this color, we no longer need the test element. Access the `window`\n        // via the document so we can fake it in tests. Note that we have extra null checks, because\n        // this logic will likely run during app bootstrap and throwing can break the entire app.\n        const documentWindow = this._document.defaultView || window;\n        const computedStyle = documentWindow && documentWindow.getComputedStyle\n            ? documentWindow.getComputedStyle(testElement)\n            : null;\n        const computedColor = ((computedStyle && computedStyle.backgroundColor) || '').replace(/ /g, '');\n        testElement.remove();\n        switch (computedColor) {\n            // Pre Windows 11 dark theme.\n            case 'rgb(0,0,0)':\n            // Windows 11 dark themes.\n            case 'rgb(45,50,54)':\n            case 'rgb(32,32,32)':\n                return 2 /* HighContrastMode.WHITE_ON_BLACK */;\n            // Pre Windows 11 light theme.\n            case 'rgb(255,255,255)':\n            // Windows 11 light theme.\n            case 'rgb(255,250,239)':\n                return 1 /* HighContrastMode.BLACK_ON_WHITE */;\n        }\n        return 0 /* HighContrastMode.NONE */;\n    }\n    ngOnDestroy() {\n        this._breakpointSubscription.unsubscribe();\n    }\n    /** Applies CSS classes indicating high-contrast mode to document body (browser-only). */\n    _applyBodyHighContrastModeCssClasses() {\n        if (!this._hasCheckedHighContrastMode && this._platform.isBrowser && this._document.body) {\n            const bodyClasses = this._document.body.classList;\n            bodyClasses.remove(HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS, BLACK_ON_WHITE_CSS_CLASS, WHITE_ON_BLACK_CSS_CLASS);\n            this._hasCheckedHighContrastMode = true;\n            const mode = this.getHighContrastMode();\n            if (mode === 1 /* HighContrastMode.BLACK_ON_WHITE */) {\n                bodyClasses.add(HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS, BLACK_ON_WHITE_CSS_CLASS);\n            }\n            else if (mode === 2 /* HighContrastMode.WHITE_ON_BLACK */) {\n                bodyClasses.add(HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS, WHITE_ON_BLACK_CSS_CLASS);\n            }\n        }\n    }\n}\nHighContrastModeDetector.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: HighContrastModeDetector, deps: [{ token: i1.Platform }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable });\nHighContrastModeDetector.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: HighContrastModeDetector, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: HighContrastModeDetector, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return [{ type: i1.Platform }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }]; } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass A11yModule {\n    constructor(highContrastModeDetector) {\n        highContrastModeDetector._applyBodyHighContrastModeCssClasses();\n    }\n}\nA11yModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: A11yModule, deps: [{ token: HighContrastModeDetector }], target: i0.ɵɵFactoryTarget.NgModule });\nA11yModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: A11yModule, declarations: [CdkAriaLive, CdkTrapFocus, CdkMonitorFocus], imports: [ObserversModule], exports: [CdkAriaLive, CdkTrapFocus, CdkMonitorFocus] });\nA11yModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: A11yModule, imports: [ObserversModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: A11yModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    imports: [ObserversModule],\n                    declarations: [CdkAriaLive, CdkTrapFocus, CdkMonitorFocus],\n                    exports: [CdkAriaLive, CdkTrapFocus, CdkMonitorFocus],\n                }]\n        }], ctorParameters: function () { return [{ type: HighContrastModeDetector }]; } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { A11yModule, ActiveDescendantKeyManager, AriaDescriber, CDK_DESCRIBEDBY_HOST_ATTRIBUTE, CDK_DESCRIBEDBY_ID_PREFIX, CdkAriaLive, CdkMonitorFocus, CdkTrapFocus, ConfigurableFocusTrap, ConfigurableFocusTrapFactory, EventListenerFocusTrapInertStrategy, FOCUS_MONITOR_DEFAULT_OPTIONS, FOCUS_TRAP_INERT_STRATEGY, FocusKeyManager, FocusMonitor, FocusTrap, FocusTrapFactory, HighContrastModeDetector, INPUT_MODALITY_DETECTOR_DEFAULT_OPTIONS, INPUT_MODALITY_DETECTOR_OPTIONS, InputModalityDetector, InteractivityChecker, IsFocusableConfig, LIVE_ANNOUNCER_DEFAULT_OPTIONS, LIVE_ANNOUNCER_ELEMENT_TOKEN, LIVE_ANNOUNCER_ELEMENT_TOKEN_FACTORY, ListKeyManager, LiveAnnouncer, MESSAGES_CONTAINER_ID, isFakeMousedownFromScreenReader, isFakeTouchstartFromScreenReader };\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nconst MAC_ENTER = 3;\nconst BACKSPACE = 8;\nconst TAB = 9;\nconst NUM_CENTER = 12;\nconst ENTER = 13;\nconst SHIFT = 16;\nconst CONTROL = 17;\nconst ALT = 18;\nconst PAUSE = 19;\nconst CAPS_LOCK = 20;\nconst ESCAPE = 27;\nconst SPACE = 32;\nconst PAGE_UP = 33;\nconst PAGE_DOWN = 34;\nconst END = 35;\nconst HOME = 36;\nconst LEFT_ARROW = 37;\nconst UP_ARROW = 38;\nconst RIGHT_ARROW = 39;\nconst DOWN_ARROW = 40;\nconst PLUS_SIGN = 43;\nconst PRINT_SCREEN = 44;\nconst INSERT = 45;\nconst DELETE = 46;\nconst ZERO = 48;\nconst ONE = 49;\nconst TWO = 50;\nconst THREE = 51;\nconst FOUR = 52;\nconst FIVE = 53;\nconst SIX = 54;\nconst SEVEN = 55;\nconst EIGHT = 56;\nconst NINE = 57;\nconst FF_SEMICOLON = 59; // Firefox (Gecko) fires this for semicolon instead of 186\nconst FF_EQUALS = 61; // Firefox (Gecko) fires this for equals instead of 187\nconst QUESTION_MARK = 63;\nconst AT_SIGN = 64;\nconst A = 65;\nconst B = 66;\nconst C = 67;\nconst D = 68;\nconst E = 69;\nconst F = 70;\nconst G = 71;\nconst H = 72;\nconst I = 73;\nconst J = 74;\nconst K = 75;\nconst L = 76;\nconst M = 77;\nconst N = 78;\nconst O = 79;\nconst P = 80;\nconst Q = 81;\nconst R = 82;\nconst S = 83;\nconst T = 84;\nconst U = 85;\nconst V = 86;\nconst W = 87;\nconst X = 88;\nconst Y = 89;\nconst Z = 90;\nconst META = 91; // WIN_KEY_LEFT\nconst MAC_WK_CMD_LEFT = 91;\nconst MAC_WK_CMD_RIGHT = 93;\nconst CONTEXT_MENU = 93;\nconst NUMPAD_ZERO = 96;\nconst NUMPAD_ONE = 97;\nconst NUMPAD_TWO = 98;\nconst NUMPAD_THREE = 99;\nconst NUMPAD_FOUR = 100;\nconst NUMPAD_FIVE = 101;\nconst NUMPAD_SIX = 102;\nconst NUMPAD_SEVEN = 103;\nconst NUMPAD_EIGHT = 104;\nconst NUMPAD_NINE = 105;\nconst NUMPAD_MULTIPLY = 106;\nconst NUMPAD_PLUS = 107;\nconst NUMPAD_MINUS = 109;\nconst NUMPAD_PERIOD = 110;\nconst NUMPAD_DIVIDE = 111;\nconst F1 = 112;\nconst F2 = 113;\nconst F3 = 114;\nconst F4 = 115;\nconst F5 = 116;\nconst F6 = 117;\nconst F7 = 118;\nconst F8 = 119;\nconst F9 = 120;\nconst F10 = 121;\nconst F11 = 122;\nconst F12 = 123;\nconst NUM_LOCK = 144;\nconst SCROLL_LOCK = 145;\nconst FIRST_MEDIA = 166;\nconst FF_MINUS = 173;\nconst MUTE = 173; // Firefox (Gecko) fires 181 for MUTE\nconst VOLUME_DOWN = 174; // Firefox (Gecko) fires 182 for VOLUME_DOWN\nconst VOLUME_UP = 175; // Firefox (Gecko) fires 183 for VOLUME_UP\nconst FF_MUTE = 181;\nconst FF_VOLUME_DOWN = 182;\nconst LAST_MEDIA = 183;\nconst FF_VOLUME_UP = 183;\nconst SEMICOLON = 186; // Firefox (Gecko) fires 59 for SEMICOLON\nconst EQUALS = 187; // Firefox (Gecko) fires 61 for EQUALS\nconst COMMA = 188;\nconst DASH = 189; // Firefox (Gecko) fires 173 for DASH/MINUS\nconst PERIOD = 190;\nconst SLASH = 191;\nconst APOSTROPHE = 192;\nconst TILDE = 192;\nconst OPEN_SQUARE_BRACKET = 219;\nconst BACKSLASH = 220;\nconst CLOSE_SQUARE_BRACKET = 221;\nconst SINGLE_QUOTE = 222;\nconst MAC_META = 224;\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Checks whether a modifier key is pressed.\n * @param event Event to be checked.\n */\nfunction hasModifierKey(event, ...modifiers) {\n    if (modifiers.length) {\n        return modifiers.some(modifier => event[modifier]);\n    }\n    return event.altKey || event.shiftKey || event.ctrlKey || event.metaKey;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { A, ALT, APOSTROPHE, AT_SIGN, B, BACKSLASH, BACKSPACE, C, CAPS_LOCK, CLOSE_SQUARE_BRACKET, COMMA, CONTEXT_MENU, CONTROL, D, DASH, DELETE, DOWN_ARROW, E, EIGHT, END, ENTER, EQUALS, ESCAPE, F, F1, F10, F11, F12, F2, F3, F4, F5, F6, F7, F8, F9, FF_EQUALS, FF_MINUS, FF_MUTE, FF_SEMICOLON, FF_VOLUME_DOWN, FF_VOLUME_UP, FIRST_MEDIA, FIVE, FOUR, G, H, HOME, I, INSERT, J, K, L, LAST_MEDIA, LEFT_ARROW, M, MAC_ENTER, MAC_META, MAC_WK_CMD_LEFT, MAC_WK_CMD_RIGHT, META, MUTE, N, NINE, NUMPAD_DIVIDE, NUMPAD_EIGHT, NUMPAD_FIVE, NUMPAD_FOUR, NUMPAD_MINUS, NUMPAD_MULTIPLY, NUMPAD_NINE, NUMPAD_ONE, NUMPAD_PERIOD, NUMPAD_PLUS, NUMPAD_SEVEN, NUMPAD_SIX, NUMPAD_THREE, NUMPAD_TWO, NUMPAD_ZERO, NUM_CENTER, NUM_LOCK, O, ONE, OPEN_SQUARE_BRACKET, P, PAGE_DOWN, PAGE_UP, PAUSE, PERIOD, PLUS_SIGN, PRINT_SCREEN, Q, QUESTION_MARK, R, RIGHT_ARROW, S, SCROLL_LOCK, SEMICOLON, SEVEN, SHIFT, SINGLE_QUOTE, SIX, SLASH, SPACE, T, TAB, THREE, TILDE, TWO, U, UP_ARROW, V, VOLUME_DOWN, VOLUME_UP, W, X, Y, Z, ZERO, hasModifierKey };\n","import * as i0 from '@angular/core';\nimport { InjectionToken, inject, EventEmitter, Injectable, Optional, Inject, Directive, Output, Input, NgModule } from '@angular/core';\nimport { DOCUMENT } from '@angular/common';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Injection token used to inject the document into Directionality.\n * This is used so that the value can be faked in tests.\n *\n * We can't use the real document in tests because changing the real `dir` causes geometry-based\n * tests in Safari to fail.\n *\n * We also can't re-provide the DOCUMENT token from platform-browser because the unit tests\n * themselves use things like `querySelector` in test code.\n *\n * This token is defined in a separate file from Directionality as a workaround for\n * https://github.com/angular/angular/issues/22559\n *\n * @docs-private\n */\nconst DIR_DOCUMENT = new InjectionToken('cdk-dir-doc', {\n    providedIn: 'root',\n    factory: DIR_DOCUMENT_FACTORY,\n});\n/** @docs-private */\nfunction DIR_DOCUMENT_FACTORY() {\n    return inject(DOCUMENT);\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Regex that matches locales with an RTL script. Taken from `goog.i18n.bidi.isRtlLanguage`. */\nconst RTL_LOCALE_PATTERN = /^(ar|ckb|dv|he|iw|fa|nqo|ps|sd|ug|ur|yi|.*[-_](Adlm|Arab|Hebr|Nkoo|Rohg|Thaa))(?!.*[-_](Latn|Cyrl)($|-|_))($|-|_)/i;\n/** Resolves a string value to a specific direction. */\nfunction _resolveDirectionality(rawValue) {\n    const value = rawValue?.toLowerCase() || '';\n    if (value === 'auto' && typeof navigator !== 'undefined' && navigator?.language) {\n        return RTL_LOCALE_PATTERN.test(navigator.language) ? 'rtl' : 'ltr';\n    }\n    return value === 'rtl' ? 'rtl' : 'ltr';\n}\n/**\n * The directionality (LTR / RTL) context for the application (or a subtree of it).\n * Exposes the current direction and a stream of direction changes.\n */\nclass Directionality {\n    constructor(_document) {\n        /** The current 'ltr' or 'rtl' value. */\n        this.value = 'ltr';\n        /** Stream that emits whenever the 'ltr' / 'rtl' state changes. */\n        this.change = new EventEmitter();\n        if (_document) {\n            const bodyDir = _document.body ? _document.body.dir : null;\n            const htmlDir = _document.documentElement ? _document.documentElement.dir : null;\n            this.value = _resolveDirectionality(bodyDir || htmlDir || 'ltr');\n        }\n    }\n    ngOnDestroy() {\n        this.change.complete();\n    }\n}\nDirectionality.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: Directionality, deps: [{ token: DIR_DOCUMENT, optional: true }], target: i0.ɵɵFactoryTarget.Injectable });\nDirectionality.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: Directionality, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: Directionality, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [DIR_DOCUMENT]\n                }] }]; } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Directive to listen for changes of direction of part of the DOM.\n *\n * Provides itself as Directionality such that descendant directives only need to ever inject\n * Directionality to get the closest direction.\n */\nclass Dir {\n    constructor() {\n        /** Normalized direction that accounts for invalid/unsupported values. */\n        this._dir = 'ltr';\n        /** Whether the `value` has been set to its initial value. */\n        this._isInitialized = false;\n        /** Event emitted when the direction changes. */\n        this.change = new EventEmitter();\n    }\n    /** @docs-private */\n    get dir() {\n        return this._dir;\n    }\n    set dir(value) {\n        const previousValue = this._dir;\n        // Note: `_resolveDirectionality` resolves the language based on the browser's language,\n        // whereas the browser does it based on the content of the element. Since doing so based\n        // on the content can be expensive, for now we're doing the simpler matching.\n        this._dir = _resolveDirectionality(value);\n        this._rawDir = value;\n        if (previousValue !== this._dir && this._isInitialized) {\n            this.change.emit(this._dir);\n        }\n    }\n    /** Current layout direction of the element. */\n    get value() {\n        return this.dir;\n    }\n    /** Initialize once default value has been set. */\n    ngAfterContentInit() {\n        this._isInitialized = true;\n    }\n    ngOnDestroy() {\n        this.change.complete();\n    }\n}\nDir.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: Dir, deps: [], target: i0.ɵɵFactoryTarget.Directive });\nDir.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", type: Dir, selector: \"[dir]\", inputs: { dir: \"dir\" }, outputs: { change: \"dirChange\" }, host: { properties: { \"attr.dir\": \"_rawDir\" } }, providers: [{ provide: Directionality, useExisting: Dir }], exportAs: [\"dir\"], ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: Dir, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[dir]',\n                    providers: [{ provide: Directionality, useExisting: Dir }],\n                    host: { '[attr.dir]': '_rawDir' },\n                    exportAs: 'dir',\n                }]\n        }], propDecorators: { change: [{\n                type: Output,\n                args: ['dirChange']\n            }], dir: [{\n                type: Input\n            }] } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass BidiModule {\n}\nBidiModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: BidiModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nBidiModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: BidiModule, declarations: [Dir], exports: [Dir] });\nBidiModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: BidiModule });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: BidiModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    exports: [Dir],\n                    declarations: [Dir],\n                }]\n        }] });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { BidiModule, DIR_DOCUMENT, Dir, Directionality };\n","import * as i0 from '@angular/core';\nimport { Version, InjectionToken, inject, NgModule, Optional, Inject, LOCALE_ID, Injectable, Directive, Input, Component, ViewEncapsulation, ChangeDetectionStrategy, EventEmitter, Output, ViewChild } from '@angular/core';\nimport * as i1 from '@angular/cdk/a11y';\nimport { isFakeMousedownFromScreenReader, isFakeTouchstartFromScreenReader } from '@angular/cdk/a11y';\nimport { BidiModule } from '@angular/cdk/bidi';\nimport { VERSION as VERSION$1 } from '@angular/cdk';\nimport * as i3 from '@angular/common';\nimport { DOCUMENT, CommonModule } from '@angular/common';\nimport * as i1$1 from '@angular/cdk/platform';\nimport { Platform, _isTestEnvironment, normalizePassiveListenerOptions, _getEventTarget } from '@angular/cdk/platform';\nimport { coerceBooleanProperty, coerceNumberProperty, coerceElement } from '@angular/cdk/coercion';\nimport { Observable, Subject } from 'rxjs';\nimport { startWith } from 'rxjs/operators';\nimport { ANIMATION_MODULE_TYPE } from '@angular/platform-browser/animations';\nimport { ENTER, SPACE, hasModifierKey } from '@angular/cdk/keycodes';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Current version of Angular Material. */\nconst VERSION = new Version('15.2.9');\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** @docs-private */\nclass AnimationCurves {\n}\nAnimationCurves.STANDARD_CURVE = 'cubic-bezier(0.4,0.0,0.2,1)';\nAnimationCurves.DECELERATION_CURVE = 'cubic-bezier(0.0,0.0,0.2,1)';\nAnimationCurves.ACCELERATION_CURVE = 'cubic-bezier(0.4,0.0,1,1)';\nAnimationCurves.SHARP_CURVE = 'cubic-bezier(0.4,0.0,0.6,1)';\n/** @docs-private */\nclass AnimationDurations {\n}\nAnimationDurations.COMPLEX = '375ms';\nAnimationDurations.ENTERING = '225ms';\nAnimationDurations.EXITING = '195ms';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** @docs-private */\nfunction MATERIAL_SANITY_CHECKS_FACTORY() {\n    return true;\n}\n/** Injection token that configures whether the Material sanity checks are enabled. */\nconst MATERIAL_SANITY_CHECKS = new InjectionToken('mat-sanity-checks', {\n    providedIn: 'root',\n    factory: MATERIAL_SANITY_CHECKS_FACTORY,\n});\n/**\n * Module that captures anything that should be loaded and/or run for *all* Angular Material\n * components. This includes Bidi, etc.\n *\n * This module should be imported to each top-level component module (e.g., MatTabsModule).\n */\nclass MatCommonModule {\n    constructor(highContrastModeDetector, _sanityChecks, _document) {\n        this._sanityChecks = _sanityChecks;\n        this._document = _document;\n        /** Whether we've done the global sanity checks (e.g. a theme is loaded, there is a doctype). */\n        this._hasDoneGlobalChecks = false;\n        // While A11yModule also does this, we repeat it here to avoid importing A11yModule\n        // in MatCommonModule.\n        highContrastModeDetector._applyBodyHighContrastModeCssClasses();\n        if (!this._hasDoneGlobalChecks) {\n            this._hasDoneGlobalChecks = true;\n            if (typeof ngDevMode === 'undefined' || ngDevMode) {\n                // Inject in here so the reference to `Platform` can be removed in production mode.\n                const platform = inject(Platform, { optional: true });\n                if (this._checkIsEnabled('doctype')) {\n                    _checkDoctypeIsDefined(this._document);\n                }\n                if (this._checkIsEnabled('theme')) {\n                    _checkThemeIsPresent(this._document, !!platform?.isBrowser);\n                }\n                if (this._checkIsEnabled('version')) {\n                    _checkCdkVersionMatch();\n                }\n            }\n        }\n    }\n    /** Gets whether a specific sanity check is enabled. */\n    _checkIsEnabled(name) {\n        if (_isTestEnvironment()) {\n            return false;\n        }\n        if (typeof this._sanityChecks === 'boolean') {\n            return this._sanityChecks;\n        }\n        return !!this._sanityChecks[name];\n    }\n}\nMatCommonModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatCommonModule, deps: [{ token: i1.HighContrastModeDetector }, { token: MATERIAL_SANITY_CHECKS, optional: true }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.NgModule });\nMatCommonModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatCommonModule, imports: [BidiModule], exports: [BidiModule] });\nMatCommonModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatCommonModule, imports: [BidiModule, BidiModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatCommonModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    imports: [BidiModule],\n                    exports: [BidiModule],\n                }]\n        }], ctorParameters: function () { return [{ type: i1.HighContrastModeDetector }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [MATERIAL_SANITY_CHECKS]\n                }] }, { type: Document, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }]; } });\n/** Checks that the page has a doctype. */\nfunction _checkDoctypeIsDefined(doc) {\n    if (!doc.doctype) {\n        console.warn('Current document does not have a doctype. This may cause ' +\n            'some Angular Material components not to behave as expected.');\n    }\n}\n/** Checks that a theme has been included. */\nfunction _checkThemeIsPresent(doc, isBrowser) {\n    // We need to assert that the `body` is defined, because these checks run very early\n    // and the `body` won't be defined if the consumer put their scripts in the `head`.\n    if (!doc.body || !isBrowser) {\n        return;\n    }\n    const testElement = doc.createElement('div');\n    testElement.classList.add('mat-theme-loaded-marker');\n    doc.body.appendChild(testElement);\n    const computedStyle = getComputedStyle(testElement);\n    // In some situations the computed style of the test element can be null. For example in\n    // Firefox, the computed style is null if an application is running inside of a hidden iframe.\n    // See: https://bugzilla.mozilla.org/show_bug.cgi?id=548397\n    if (computedStyle && computedStyle.display !== 'none') {\n        console.warn('Could not find Angular Material core theme. Most Material ' +\n            'components may not work as expected. For more info refer ' +\n            'to the theming guide: https://material.angular.io/guide/theming');\n    }\n    testElement.remove();\n}\n/** Checks whether the Material version matches the CDK version. */\nfunction _checkCdkVersionMatch() {\n    if (VERSION.full !== VERSION$1.full) {\n        console.warn('The Angular Material version (' +\n            VERSION.full +\n            ') does not match ' +\n            'the Angular CDK version (' +\n            VERSION$1.full +\n            ').\\n' +\n            'Please ensure the versions of these two packages exactly match.');\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nfunction mixinDisabled(base) {\n    return class extends base {\n        get disabled() {\n            return this._disabled;\n        }\n        set disabled(value) {\n            this._disabled = coerceBooleanProperty(value);\n        }\n        constructor(...args) {\n            super(...args);\n            this._disabled = false;\n        }\n    };\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nfunction mixinColor(base, defaultColor) {\n    return class extends base {\n        get color() {\n            return this._color;\n        }\n        set color(value) {\n            const colorPalette = value || this.defaultColor;\n            if (colorPalette !== this._color) {\n                if (this._color) {\n                    this._elementRef.nativeElement.classList.remove(`mat-${this._color}`);\n                }\n                if (colorPalette) {\n                    this._elementRef.nativeElement.classList.add(`mat-${colorPalette}`);\n                }\n                this._color = colorPalette;\n            }\n        }\n        constructor(...args) {\n            super(...args);\n            this.defaultColor = defaultColor;\n            // Set the default color that can be specified from the mixin.\n            this.color = defaultColor;\n        }\n    };\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nfunction mixinDisableRipple(base) {\n    return class extends base {\n        /** Whether the ripple effect is disabled or not. */\n        get disableRipple() {\n            return this._disableRipple;\n        }\n        set disableRipple(value) {\n            this._disableRipple = coerceBooleanProperty(value);\n        }\n        constructor(...args) {\n            super(...args);\n            this._disableRipple = false;\n        }\n    };\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nfunction mixinTabIndex(base, defaultTabIndex = 0) {\n    return class extends base {\n        get tabIndex() {\n            return this.disabled ? -1 : this._tabIndex;\n        }\n        set tabIndex(value) {\n            // If the specified tabIndex value is null or undefined, fall back to the default value.\n            this._tabIndex = value != null ? coerceNumberProperty(value) : this.defaultTabIndex;\n        }\n        constructor(...args) {\n            super(...args);\n            this._tabIndex = defaultTabIndex;\n            this.defaultTabIndex = defaultTabIndex;\n        }\n    };\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nfunction mixinErrorState(base) {\n    return class extends base {\n        /** Updates the error state based on the provided error state matcher. */\n        updateErrorState() {\n            const oldState = this.errorState;\n            const parent = this._parentFormGroup || this._parentForm;\n            const matcher = this.errorStateMatcher || this._defaultErrorStateMatcher;\n            const control = this.ngControl ? this.ngControl.control : null;\n            const newState = matcher.isErrorState(control, parent);\n            if (newState !== oldState) {\n                this.errorState = newState;\n                this.stateChanges.next();\n            }\n        }\n        constructor(...args) {\n            super(...args);\n            /** Whether the component is in an error state. */\n            this.errorState = false;\n        }\n    };\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Mixin to augment a directive with an initialized property that will emits when ngOnInit ends. */\nfunction mixinInitialized(base) {\n    return class extends base {\n        constructor(...args) {\n            super(...args);\n            /** Whether this directive has been marked as initialized. */\n            this._isInitialized = false;\n            /**\n             * List of subscribers that subscribed before the directive was initialized. Should be notified\n             * during _markInitialized. Set to null after pending subscribers are notified, and should\n             * not expect to be populated after.\n             */\n            this._pendingSubscribers = [];\n            /**\n             * Observable stream that emits when the directive initializes. If already initialized, the\n             * subscriber is stored to be notified once _markInitialized is called.\n             */\n            this.initialized = new Observable(subscriber => {\n                // If initialized, immediately notify the subscriber. Otherwise store the subscriber to notify\n                // when _markInitialized is called.\n                if (this._isInitialized) {\n                    this._notifySubscriber(subscriber);\n                }\n                else {\n                    this._pendingSubscribers.push(subscriber);\n                }\n            });\n        }\n        /**\n         * Marks the state as initialized and notifies pending subscribers. Should be called at the end\n         * of ngOnInit.\n         * @docs-private\n         */\n        _markInitialized() {\n            if (this._isInitialized && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n                throw Error('This directive has already been marked as initialized and ' +\n                    'should not be called twice.');\n            }\n            this._isInitialized = true;\n            this._pendingSubscribers.forEach(this._notifySubscriber);\n            this._pendingSubscribers = null;\n        }\n        /** Emits and completes the subscriber stream (should only emit once). */\n        _notifySubscriber(subscriber) {\n            subscriber.next();\n            subscriber.complete();\n        }\n    };\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** InjectionToken for datepicker that can be used to override default locale code. */\nconst MAT_DATE_LOCALE = new InjectionToken('MAT_DATE_LOCALE', {\n    providedIn: 'root',\n    factory: MAT_DATE_LOCALE_FACTORY,\n});\n/** @docs-private */\nfunction MAT_DATE_LOCALE_FACTORY() {\n    return inject(LOCALE_ID);\n}\n/** Adapts type `D` to be usable as a date by cdk-based components that work with dates. */\nclass DateAdapter {\n    constructor() {\n        this._localeChanges = new Subject();\n        /** A stream that emits when the locale changes. */\n        this.localeChanges = this._localeChanges;\n    }\n    /**\n     * Given a potential date object, returns that same date object if it is\n     * a valid date, or `null` if it's not a valid date.\n     * @param obj The object to check.\n     * @returns A date or `null`.\n     */\n    getValidDateOrNull(obj) {\n        return this.isDateInstance(obj) && this.isValid(obj) ? obj : null;\n    }\n    /**\n     * Attempts to deserialize a value to a valid date object. This is different from parsing in that\n     * deserialize should only accept non-ambiguous, locale-independent formats (e.g. a ISO 8601\n     * string). The default implementation does not allow any deserialization, it simply checks that\n     * the given value is already a valid date object or null. The `<mat-datepicker>` will call this\n     * method on all of its `@Input()` properties that accept dates. It is therefore possible to\n     * support passing values from your backend directly to these properties by overriding this method\n     * to also deserialize the format used by your backend.\n     * @param value The value to be deserialized into a date object.\n     * @returns The deserialized date object, either a valid date, null if the value can be\n     *     deserialized into a null date (e.g. the empty string), or an invalid date.\n     */\n    deserialize(value) {\n        if (value == null || (this.isDateInstance(value) && this.isValid(value))) {\n            return value;\n        }\n        return this.invalid();\n    }\n    /**\n     * Sets the locale used for all dates.\n     * @param locale The new locale.\n     */\n    setLocale(locale) {\n        this.locale = locale;\n        this._localeChanges.next();\n    }\n    /**\n     * Compares two dates.\n     * @param first The first date to compare.\n     * @param second The second date to compare.\n     * @returns 0 if the dates are equal, a number less than 0 if the first date is earlier,\n     *     a number greater than 0 if the first date is later.\n     */\n    compareDate(first, second) {\n        return (this.getYear(first) - this.getYear(second) ||\n            this.getMonth(first) - this.getMonth(second) ||\n            this.getDate(first) - this.getDate(second));\n    }\n    /**\n     * Checks if two dates are equal.\n     * @param first The first date to check.\n     * @param second The second date to check.\n     * @returns Whether the two dates are equal.\n     *     Null dates are considered equal to other null dates.\n     */\n    sameDate(first, second) {\n        if (first && second) {\n            let firstValid = this.isValid(first);\n            let secondValid = this.isValid(second);\n            if (firstValid && secondValid) {\n                return !this.compareDate(first, second);\n            }\n            return firstValid == secondValid;\n        }\n        return first == second;\n    }\n    /**\n     * Clamp the given date between min and max dates.\n     * @param date The date to clamp.\n     * @param min The minimum value to allow. If null or omitted no min is enforced.\n     * @param max The maximum value to allow. If null or omitted no max is enforced.\n     * @returns `min` if `date` is less than `min`, `max` if date is greater than `max`,\n     *     otherwise `date`.\n     */\n    clampDate(date, min, max) {\n        if (min && this.compareDate(date, min) < 0) {\n            return min;\n        }\n        if (max && this.compareDate(date, max) > 0) {\n            return max;\n        }\n        return date;\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nconst MAT_DATE_FORMATS = new InjectionToken('mat-date-formats');\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Matches strings that have the form of a valid RFC 3339 string\n * (https://tools.ietf.org/html/rfc3339). Note that the string may not actually be a valid date\n * because the regex will match strings an with out of bounds month, date, etc.\n */\nconst ISO_8601_REGEX = /^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}:\\d{2}(?:\\.\\d+)?(?:Z|(?:(?:\\+|-)\\d{2}:\\d{2}))?)?$/;\n/** Creates an array and fills it with values. */\nfunction range(length, valueFunction) {\n    const valuesArray = Array(length);\n    for (let i = 0; i < length; i++) {\n        valuesArray[i] = valueFunction(i);\n    }\n    return valuesArray;\n}\n/** Adapts the native JS Date for use with cdk-based components that work with dates. */\nclass NativeDateAdapter extends DateAdapter {\n    constructor(matDateLocale, \n    /**\n     * @deprecated No longer being used. To be removed.\n     * @breaking-change 14.0.0\n     */\n    _platform) {\n        super();\n        /**\n         * @deprecated No longer being used. To be removed.\n         * @breaking-change 14.0.0\n         */\n        this.useUtcForDisplay = false;\n        super.setLocale(matDateLocale);\n    }\n    getYear(date) {\n        return date.getFullYear();\n    }\n    getMonth(date) {\n        return date.getMonth();\n    }\n    getDate(date) {\n        return date.getDate();\n    }\n    getDayOfWeek(date) {\n        return date.getDay();\n    }\n    getMonthNames(style) {\n        const dtf = new Intl.DateTimeFormat(this.locale, { month: style, timeZone: 'utc' });\n        return range(12, i => this._format(dtf, new Date(2017, i, 1)));\n    }\n    getDateNames() {\n        const dtf = new Intl.DateTimeFormat(this.locale, { day: 'numeric', timeZone: 'utc' });\n        return range(31, i => this._format(dtf, new Date(2017, 0, i + 1)));\n    }\n    getDayOfWeekNames(style) {\n        const dtf = new Intl.DateTimeFormat(this.locale, { weekday: style, timeZone: 'utc' });\n        return range(7, i => this._format(dtf, new Date(2017, 0, i + 1)));\n    }\n    getYearName(date) {\n        const dtf = new Intl.DateTimeFormat(this.locale, { year: 'numeric', timeZone: 'utc' });\n        return this._format(dtf, date);\n    }\n    getFirstDayOfWeek() {\n        // We can't tell using native JS Date what the first day of the week is, we default to Sunday.\n        return 0;\n    }\n    getNumDaysInMonth(date) {\n        return this.getDate(this._createDateWithOverflow(this.getYear(date), this.getMonth(date) + 1, 0));\n    }\n    clone(date) {\n        return new Date(date.getTime());\n    }\n    createDate(year, month, date) {\n        if (typeof ngDevMode === 'undefined' || ngDevMode) {\n            // Check for invalid month and date (except upper bound on date which we have to check after\n            // creating the Date).\n            if (month < 0 || month > 11) {\n                throw Error(`Invalid month index \"${month}\". Month index has to be between 0 and 11.`);\n            }\n            if (date < 1) {\n                throw Error(`Invalid date \"${date}\". Date has to be greater than 0.`);\n            }\n        }\n        let result = this._createDateWithOverflow(year, month, date);\n        // Check that the date wasn't above the upper bound for the month, causing the month to overflow\n        if (result.getMonth() != month && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n            throw Error(`Invalid date \"${date}\" for month with index \"${month}\".`);\n        }\n        return result;\n    }\n    today() {\n        return new Date();\n    }\n    parse(value, parseFormat) {\n        // We have no way using the native JS Date to set the parse format or locale, so we ignore these\n        // parameters.\n        if (typeof value == 'number') {\n            return new Date(value);\n        }\n        return value ? new Date(Date.parse(value)) : null;\n    }\n    format(date, displayFormat) {\n        if (!this.isValid(date)) {\n            throw Error('NativeDateAdapter: Cannot format invalid date.');\n        }\n        const dtf = new Intl.DateTimeFormat(this.locale, { ...displayFormat, timeZone: 'utc' });\n        return this._format(dtf, date);\n    }\n    addCalendarYears(date, years) {\n        return this.addCalendarMonths(date, years * 12);\n    }\n    addCalendarMonths(date, months) {\n        let newDate = this._createDateWithOverflow(this.getYear(date), this.getMonth(date) + months, this.getDate(date));\n        // It's possible to wind up in the wrong month if the original month has more days than the new\n        // month. In this case we want to go to the last day of the desired month.\n        // Note: the additional + 12 % 12 ensures we end up with a positive number, since JS % doesn't\n        // guarantee this.\n        if (this.getMonth(newDate) != (((this.getMonth(date) + months) % 12) + 12) % 12) {\n            newDate = this._createDateWithOverflow(this.getYear(newDate), this.getMonth(newDate), 0);\n        }\n        return newDate;\n    }\n    addCalendarDays(date, days) {\n        return this._createDateWithOverflow(this.getYear(date), this.getMonth(date), this.getDate(date) + days);\n    }\n    toIso8601(date) {\n        return [\n            date.getUTCFullYear(),\n            this._2digit(date.getUTCMonth() + 1),\n            this._2digit(date.getUTCDate()),\n        ].join('-');\n    }\n    /**\n     * Returns the given value if given a valid Date or null. Deserializes valid ISO 8601 strings\n     * (https://www.ietf.org/rfc/rfc3339.txt) into valid Dates and empty string into null. Returns an\n     * invalid date for all other values.\n     */\n    deserialize(value) {\n        if (typeof value === 'string') {\n            if (!value) {\n                return null;\n            }\n            // The `Date` constructor accepts formats other than ISO 8601, so we need to make sure the\n            // string is the right format first.\n            if (ISO_8601_REGEX.test(value)) {\n                let date = new Date(value);\n                if (this.isValid(date)) {\n                    return date;\n                }\n            }\n        }\n        return super.deserialize(value);\n    }\n    isDateInstance(obj) {\n        return obj instanceof Date;\n    }\n    isValid(date) {\n        return !isNaN(date.getTime());\n    }\n    invalid() {\n        return new Date(NaN);\n    }\n    /** Creates a date but allows the month and date to overflow. */\n    _createDateWithOverflow(year, month, date) {\n        // Passing the year to the constructor causes year numbers <100 to be converted to 19xx.\n        // To work around this we use `setFullYear` and `setHours` instead.\n        const d = new Date();\n        d.setFullYear(year, month, date);\n        d.setHours(0, 0, 0, 0);\n        return d;\n    }\n    /**\n     * Pads a number to make it two digits.\n     * @param n The number to pad.\n     * @returns The padded number.\n     */\n    _2digit(n) {\n        return ('00' + n).slice(-2);\n    }\n    /**\n     * When converting Date object to string, javascript built-in functions may return wrong\n     * results because it applies its internal DST rules. The DST rules around the world change\n     * very frequently, and the current valid rule is not always valid in previous years though.\n     * We work around this problem building a new Date object which has its internal UTC\n     * representation with the local date and time.\n     * @param dtf Intl.DateTimeFormat object, containing the desired string format. It must have\n     *    timeZone set to 'utc' to work fine.\n     * @param date Date from which we want to get the string representation according to dtf\n     * @returns A Date object with its UTC representation based on the passed in date info\n     */\n    _format(dtf, date) {\n        // Passing the year to the constructor causes year numbers <100 to be converted to 19xx.\n        // To work around this we use `setUTCFullYear` and `setUTCHours` instead.\n        const d = new Date();\n        d.setUTCFullYear(date.getFullYear(), date.getMonth(), date.getDate());\n        d.setUTCHours(date.getHours(), date.getMinutes(), date.getSeconds(), date.getMilliseconds());\n        return dtf.format(d);\n    }\n}\nNativeDateAdapter.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: NativeDateAdapter, deps: [{ token: MAT_DATE_LOCALE, optional: true }, { token: i1$1.Platform }], target: i0.ɵɵFactoryTarget.Injectable });\nNativeDateAdapter.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: NativeDateAdapter });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: NativeDateAdapter, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [MAT_DATE_LOCALE]\n                }] }, { type: i1$1.Platform }]; } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nconst MAT_NATIVE_DATE_FORMATS = {\n    parse: {\n        dateInput: null,\n    },\n    display: {\n        dateInput: { year: 'numeric', month: 'numeric', day: 'numeric' },\n        monthYearLabel: { year: 'numeric', month: 'short' },\n        dateA11yLabel: { year: 'numeric', month: 'long', day: 'numeric' },\n        monthYearA11yLabel: { year: 'numeric', month: 'long' },\n    },\n};\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass NativeDateModule {\n}\nNativeDateModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: NativeDateModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nNativeDateModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: NativeDateModule });\nNativeDateModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: NativeDateModule, providers: [{ provide: DateAdapter, useClass: NativeDateAdapter }] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: NativeDateModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    providers: [{ provide: DateAdapter, useClass: NativeDateAdapter }],\n                }]\n        }] });\nclass MatNativeDateModule {\n}\nMatNativeDateModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatNativeDateModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nMatNativeDateModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatNativeDateModule, imports: [NativeDateModule] });\nMatNativeDateModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatNativeDateModule, providers: [{ provide: MAT_DATE_FORMATS, useValue: MAT_NATIVE_DATE_FORMATS }], imports: [NativeDateModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatNativeDateModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    imports: [NativeDateModule],\n                    providers: [{ provide: MAT_DATE_FORMATS, useValue: MAT_NATIVE_DATE_FORMATS }],\n                }]\n        }] });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Error state matcher that matches when a control is invalid and dirty. */\nclass ShowOnDirtyErrorStateMatcher {\n    isErrorState(control, form) {\n        return !!(control && control.invalid && (control.dirty || (form && form.submitted)));\n    }\n}\nShowOnDirtyErrorStateMatcher.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: ShowOnDirtyErrorStateMatcher, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nShowOnDirtyErrorStateMatcher.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: ShowOnDirtyErrorStateMatcher });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: ShowOnDirtyErrorStateMatcher, decorators: [{\n            type: Injectable\n        }] });\n/** Provider that defines how form controls behave with regards to displaying error messages. */\nclass ErrorStateMatcher {\n    isErrorState(control, form) {\n        return !!(control && control.invalid && (control.touched || (form && form.submitted)));\n    }\n}\nErrorStateMatcher.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: ErrorStateMatcher, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nErrorStateMatcher.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: ErrorStateMatcher, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: ErrorStateMatcher, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }] });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Shared directive to count lines inside a text area, such as a list item.\n * Line elements can be extracted with a @ContentChildren(MatLine) query, then\n * counted by checking the query list's length.\n */\nclass MatLine {\n}\nMatLine.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatLine, deps: [], target: i0.ɵɵFactoryTarget.Directive });\nMatLine.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", type: MatLine, selector: \"[mat-line], [matLine]\", host: { classAttribute: \"mat-line\" }, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatLine, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[mat-line], [matLine]',\n                    host: { 'class': 'mat-line' },\n                }]\n        }] });\n/**\n * Helper that takes a query list of lines and sets the correct class on the host.\n * @docs-private\n */\nfunction setLines(lines, element, prefix = 'mat') {\n    // Note: doesn't need to unsubscribe, because `changes`\n    // gets completed by Angular when the view is destroyed.\n    lines.changes.pipe(startWith(lines)).subscribe(({ length }) => {\n        setClass(element, `${prefix}-2-line`, false);\n        setClass(element, `${prefix}-3-line`, false);\n        setClass(element, `${prefix}-multi-line`, false);\n        if (length === 2 || length === 3) {\n            setClass(element, `${prefix}-${length}-line`, true);\n        }\n        else if (length > 3) {\n            setClass(element, `${prefix}-multi-line`, true);\n        }\n    });\n}\n/** Adds or removes a class from an element. */\nfunction setClass(element, className, isAdd) {\n    element.nativeElement.classList.toggle(className, isAdd);\n}\nclass MatLineModule {\n}\nMatLineModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatLineModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nMatLineModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatLineModule, declarations: [MatLine], imports: [MatCommonModule], exports: [MatLine, MatCommonModule] });\nMatLineModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatLineModule, imports: [MatCommonModule, MatCommonModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatLineModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    imports: [MatCommonModule],\n                    exports: [MatLine, MatCommonModule],\n                    declarations: [MatLine],\n                }]\n        }] });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Reference to a previously launched ripple element.\n */\nclass RippleRef {\n    constructor(_renderer, \n    /** Reference to the ripple HTML element. */\n    element, \n    /** Ripple configuration used for the ripple. */\n    config, \n    /* Whether animations are forcibly disabled for ripples through CSS. */\n    _animationForciblyDisabledThroughCss = false) {\n        this._renderer = _renderer;\n        this.element = element;\n        this.config = config;\n        this._animationForciblyDisabledThroughCss = _animationForciblyDisabledThroughCss;\n        /** Current state of the ripple. */\n        this.state = 3 /* RippleState.HIDDEN */;\n    }\n    /** Fades out the ripple element. */\n    fadeOut() {\n        this._renderer.fadeOutRipple(this);\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Options used to bind a passive capturing event. */\nconst passiveCapturingEventOptions$1 = normalizePassiveListenerOptions({\n    passive: true,\n    capture: true,\n});\n/** Manages events through delegation so that as few event handlers as possible are bound. */\nclass RippleEventManager {\n    constructor() {\n        this._events = new Map();\n        /** Event handler that is bound and which dispatches the events to the different targets. */\n        this._delegateEventHandler = (event) => {\n            const target = _getEventTarget(event);\n            if (target) {\n                this._events.get(event.type)?.forEach((handlers, element) => {\n                    if (element === target || element.contains(target)) {\n                        handlers.forEach(handler => handler.handleEvent(event));\n                    }\n                });\n            }\n        };\n    }\n    /** Adds an event handler. */\n    addHandler(ngZone, name, element, handler) {\n        const handlersForEvent = this._events.get(name);\n        if (handlersForEvent) {\n            const handlersForElement = handlersForEvent.get(element);\n            if (handlersForElement) {\n                handlersForElement.add(handler);\n            }\n            else {\n                handlersForEvent.set(element, new Set([handler]));\n            }\n        }\n        else {\n            this._events.set(name, new Map([[element, new Set([handler])]]));\n            ngZone.runOutsideAngular(() => {\n                document.addEventListener(name, this._delegateEventHandler, passiveCapturingEventOptions$1);\n            });\n        }\n    }\n    /** Removes an event handler. */\n    removeHandler(name, element, handler) {\n        const handlersForEvent = this._events.get(name);\n        if (!handlersForEvent) {\n            return;\n        }\n        const handlersForElement = handlersForEvent.get(element);\n        if (!handlersForElement) {\n            return;\n        }\n        handlersForElement.delete(handler);\n        if (handlersForElement.size === 0) {\n            handlersForEvent.delete(element);\n        }\n        if (handlersForEvent.size === 0) {\n            this._events.delete(name);\n            document.removeEventListener(name, this._delegateEventHandler, passiveCapturingEventOptions$1);\n        }\n    }\n}\n\n/**\n * Default ripple animation configuration for ripples without an explicit\n * animation config specified.\n */\nconst defaultRippleAnimationConfig = {\n    enterDuration: 225,\n    exitDuration: 150,\n};\n/**\n * Timeout for ignoring mouse events. Mouse events will be temporary ignored after touch\n * events to avoid synthetic mouse events.\n */\nconst ignoreMouseEventsTimeout = 800;\n/** Options used to bind a passive capturing event. */\nconst passiveCapturingEventOptions = normalizePassiveListenerOptions({\n    passive: true,\n    capture: true,\n});\n/** Events that signal that the pointer is down. */\nconst pointerDownEvents = ['mousedown', 'touchstart'];\n/** Events that signal that the pointer is up. */\nconst pointerUpEvents = ['mouseup', 'mouseleave', 'touchend', 'touchcancel'];\n/**\n * Helper service that performs DOM manipulations. Not intended to be used outside this module.\n * The constructor takes a reference to the ripple directive's host element and a map of DOM\n * event handlers to be installed on the element that triggers ripple animations.\n * This will eventually become a custom renderer once Angular support exists.\n * @docs-private\n */\nclass RippleRenderer {\n    constructor(_target, _ngZone, elementOrElementRef, _platform) {\n        this._target = _target;\n        this._ngZone = _ngZone;\n        this._platform = _platform;\n        /** Whether the pointer is currently down or not. */\n        this._isPointerDown = false;\n        /**\n         * Map of currently active ripple references.\n         * The ripple reference is mapped to its element event listeners.\n         * The reason why `| null` is used is that event listeners are added only\n         * when the condition is truthy (see the `_startFadeOutTransition` method).\n         */\n        this._activeRipples = new Map();\n        /** Whether pointer-up event listeners have been registered. */\n        this._pointerUpEventsRegistered = false;\n        // Only do anything if we're on the browser.\n        if (_platform.isBrowser) {\n            this._containerElement = coerceElement(elementOrElementRef);\n        }\n    }\n    /**\n     * Fades in a ripple at the given coordinates.\n     * @param x Coordinate within the element, along the X axis at which to start the ripple.\n     * @param y Coordinate within the element, along the Y axis at which to start the ripple.\n     * @param config Extra ripple options.\n     */\n    fadeInRipple(x, y, config = {}) {\n        const containerRect = (this._containerRect =\n            this._containerRect || this._containerElement.getBoundingClientRect());\n        const animationConfig = { ...defaultRippleAnimationConfig, ...config.animation };\n        if (config.centered) {\n            x = containerRect.left + containerRect.width / 2;\n            y = containerRect.top + containerRect.height / 2;\n        }\n        const radius = config.radius || distanceToFurthestCorner(x, y, containerRect);\n        const offsetX = x - containerRect.left;\n        const offsetY = y - containerRect.top;\n        const enterDuration = animationConfig.enterDuration;\n        const ripple = document.createElement('div');\n        ripple.classList.add('mat-ripple-element');\n        ripple.style.left = `${offsetX - radius}px`;\n        ripple.style.top = `${offsetY - radius}px`;\n        ripple.style.height = `${radius * 2}px`;\n        ripple.style.width = `${radius * 2}px`;\n        // If a custom color has been specified, set it as inline style. If no color is\n        // set, the default color will be applied through the ripple theme styles.\n        if (config.color != null) {\n            ripple.style.backgroundColor = config.color;\n        }\n        ripple.style.transitionDuration = `${enterDuration}ms`;\n        this._containerElement.appendChild(ripple);\n        // By default the browser does not recalculate the styles of dynamically created\n        // ripple elements. This is critical to ensure that the `scale` animates properly.\n        // We enforce a style recalculation by calling `getComputedStyle` and *accessing* a property.\n        // See: https://gist.github.com/paulirish/5d52fb081b3570c81e3a\n        const computedStyles = window.getComputedStyle(ripple);\n        const userTransitionProperty = computedStyles.transitionProperty;\n        const userTransitionDuration = computedStyles.transitionDuration;\n        // Note: We detect whether animation is forcibly disabled through CSS (e.g. through\n        // `transition: none` or `display: none`). This is technically unexpected since animations are\n        // controlled through the animation config, but this exists for backwards compatibility. This\n        // logic does not need to be super accurate since it covers some edge cases which can be easily\n        // avoided by users.\n        const animationForciblyDisabledThroughCss = userTransitionProperty === 'none' ||\n            // Note: The canonical unit for serialized CSS `<time>` properties is seconds. Additionally\n            // some browsers expand the duration for every property (in our case `opacity` and `transform`).\n            userTransitionDuration === '0s' ||\n            userTransitionDuration === '0s, 0s' ||\n            // If the container is 0x0, it's likely `display: none`.\n            (containerRect.width === 0 && containerRect.height === 0);\n        // Exposed reference to the ripple that will be returned.\n        const rippleRef = new RippleRef(this, ripple, config, animationForciblyDisabledThroughCss);\n        // Start the enter animation by setting the transform/scale to 100%. The animation will\n        // execute as part of this statement because we forced a style recalculation before.\n        // Note: We use a 3d transform here in order to avoid an issue in Safari where\n        // the ripples aren't clipped when inside the shadow DOM (see #24028).\n        ripple.style.transform = 'scale3d(1, 1, 1)';\n        rippleRef.state = 0 /* RippleState.FADING_IN */;\n        if (!config.persistent) {\n            this._mostRecentTransientRipple = rippleRef;\n        }\n        let eventListeners = null;\n        // Do not register the `transition` event listener if fade-in and fade-out duration\n        // are set to zero. The events won't fire anyway and we can save resources here.\n        if (!animationForciblyDisabledThroughCss && (enterDuration || animationConfig.exitDuration)) {\n            this._ngZone.runOutsideAngular(() => {\n                const onTransitionEnd = () => this._finishRippleTransition(rippleRef);\n                const onTransitionCancel = () => this._destroyRipple(rippleRef);\n                ripple.addEventListener('transitionend', onTransitionEnd);\n                // If the transition is cancelled (e.g. due to DOM removal), we destroy the ripple\n                // directly as otherwise we would keep it part of the ripple container forever.\n                // https://www.w3.org/TR/css-transitions-1/#:~:text=no%20longer%20in%20the%20document.\n                ripple.addEventListener('transitioncancel', onTransitionCancel);\n                eventListeners = { onTransitionEnd, onTransitionCancel };\n            });\n        }\n        // Add the ripple reference to the list of all active ripples.\n        this._activeRipples.set(rippleRef, eventListeners);\n        // In case there is no fade-in transition duration, we need to manually call the transition\n        // end listener because `transitionend` doesn't fire if there is no transition.\n        if (animationForciblyDisabledThroughCss || !enterDuration) {\n            this._finishRippleTransition(rippleRef);\n        }\n        return rippleRef;\n    }\n    /** Fades out a ripple reference. */\n    fadeOutRipple(rippleRef) {\n        // For ripples already fading out or hidden, this should be a noop.\n        if (rippleRef.state === 2 /* RippleState.FADING_OUT */ || rippleRef.state === 3 /* RippleState.HIDDEN */) {\n            return;\n        }\n        const rippleEl = rippleRef.element;\n        const animationConfig = { ...defaultRippleAnimationConfig, ...rippleRef.config.animation };\n        // This starts the fade-out transition and will fire the transition end listener that\n        // removes the ripple element from the DOM.\n        rippleEl.style.transitionDuration = `${animationConfig.exitDuration}ms`;\n        rippleEl.style.opacity = '0';\n        rippleRef.state = 2 /* RippleState.FADING_OUT */;\n        // In case there is no fade-out transition duration, we need to manually call the\n        // transition end listener because `transitionend` doesn't fire if there is no transition.\n        if (rippleRef._animationForciblyDisabledThroughCss || !animationConfig.exitDuration) {\n            this._finishRippleTransition(rippleRef);\n        }\n    }\n    /** Fades out all currently active ripples. */\n    fadeOutAll() {\n        this._getActiveRipples().forEach(ripple => ripple.fadeOut());\n    }\n    /** Fades out all currently active non-persistent ripples. */\n    fadeOutAllNonPersistent() {\n        this._getActiveRipples().forEach(ripple => {\n            if (!ripple.config.persistent) {\n                ripple.fadeOut();\n            }\n        });\n    }\n    /** Sets up the trigger event listeners */\n    setupTriggerEvents(elementOrElementRef) {\n        const element = coerceElement(elementOrElementRef);\n        if (!this._platform.isBrowser || !element || element === this._triggerElement) {\n            return;\n        }\n        // Remove all previously registered event listeners from the trigger element.\n        this._removeTriggerEvents();\n        this._triggerElement = element;\n        // Use event delegation for the trigger events since they're\n        // set up during creation and are performance-sensitive.\n        pointerDownEvents.forEach(type => {\n            RippleRenderer._eventManager.addHandler(this._ngZone, type, element, this);\n        });\n    }\n    /**\n     * Handles all registered events.\n     * @docs-private\n     */\n    handleEvent(event) {\n        if (event.type === 'mousedown') {\n            this._onMousedown(event);\n        }\n        else if (event.type === 'touchstart') {\n            this._onTouchStart(event);\n        }\n        else {\n            this._onPointerUp();\n        }\n        // If pointer-up events haven't been registered yet, do so now.\n        // We do this on-demand in order to reduce the total number of event listeners\n        // registered by the ripples, which speeds up the rendering time for large UIs.\n        if (!this._pointerUpEventsRegistered) {\n            // The events for hiding the ripple are bound directly on the trigger, because:\n            // 1. Some of them occur frequently (e.g. `mouseleave`) and any advantage we get from\n            // delegation will be diminished by having to look through all the data structures often.\n            // 2. They aren't as performance-sensitive, because they're bound only after the user\n            // has interacted with an element.\n            this._ngZone.runOutsideAngular(() => {\n                pointerUpEvents.forEach(type => {\n                    this._triggerElement.addEventListener(type, this, passiveCapturingEventOptions);\n                });\n            });\n            this._pointerUpEventsRegistered = true;\n        }\n    }\n    /** Method that will be called if the fade-in or fade-in transition completed. */\n    _finishRippleTransition(rippleRef) {\n        if (rippleRef.state === 0 /* RippleState.FADING_IN */) {\n            this._startFadeOutTransition(rippleRef);\n        }\n        else if (rippleRef.state === 2 /* RippleState.FADING_OUT */) {\n            this._destroyRipple(rippleRef);\n        }\n    }\n    /**\n     * Starts the fade-out transition of the given ripple if it's not persistent and the pointer\n     * is not held down anymore.\n     */\n    _startFadeOutTransition(rippleRef) {\n        const isMostRecentTransientRipple = rippleRef === this._mostRecentTransientRipple;\n        const { persistent } = rippleRef.config;\n        rippleRef.state = 1 /* RippleState.VISIBLE */;\n        // When the timer runs out while the user has kept their pointer down, we want to\n        // keep only the persistent ripples and the latest transient ripple. We do this,\n        // because we don't want stacked transient ripples to appear after their enter\n        // animation has finished.\n        if (!persistent && (!isMostRecentTransientRipple || !this._isPointerDown)) {\n            rippleRef.fadeOut();\n        }\n    }\n    /** Destroys the given ripple by removing it from the DOM and updating its state. */\n    _destroyRipple(rippleRef) {\n        const eventListeners = this._activeRipples.get(rippleRef) ?? null;\n        this._activeRipples.delete(rippleRef);\n        // Clear out the cached bounding rect if we have no more ripples.\n        if (!this._activeRipples.size) {\n            this._containerRect = null;\n        }\n        // If the current ref is the most recent transient ripple, unset it\n        // avoid memory leaks.\n        if (rippleRef === this._mostRecentTransientRipple) {\n            this._mostRecentTransientRipple = null;\n        }\n        rippleRef.state = 3 /* RippleState.HIDDEN */;\n        if (eventListeners !== null) {\n            rippleRef.element.removeEventListener('transitionend', eventListeners.onTransitionEnd);\n            rippleRef.element.removeEventListener('transitioncancel', eventListeners.onTransitionCancel);\n        }\n        rippleRef.element.remove();\n    }\n    /** Function being called whenever the trigger is being pressed using mouse. */\n    _onMousedown(event) {\n        // Screen readers will fire fake mouse events for space/enter. Skip launching a\n        // ripple in this case for consistency with the non-screen-reader experience.\n        const isFakeMousedown = isFakeMousedownFromScreenReader(event);\n        const isSyntheticEvent = this._lastTouchStartEvent &&\n            Date.now() < this._lastTouchStartEvent + ignoreMouseEventsTimeout;\n        if (!this._target.rippleDisabled && !isFakeMousedown && !isSyntheticEvent) {\n            this._isPointerDown = true;\n            this.fadeInRipple(event.clientX, event.clientY, this._target.rippleConfig);\n        }\n    }\n    /** Function being called whenever the trigger is being pressed using touch. */\n    _onTouchStart(event) {\n        if (!this._target.rippleDisabled && !isFakeTouchstartFromScreenReader(event)) {\n            // Some browsers fire mouse events after a `touchstart` event. Those synthetic mouse\n            // events will launch a second ripple if we don't ignore mouse events for a specific\n            // time after a touchstart event.\n            this._lastTouchStartEvent = Date.now();\n            this._isPointerDown = true;\n            // Use `changedTouches` so we skip any touches where the user put\n            // their finger down, but used another finger to tap the element again.\n            const touches = event.changedTouches;\n            for (let i = 0; i < touches.length; i++) {\n                this.fadeInRipple(touches[i].clientX, touches[i].clientY, this._target.rippleConfig);\n            }\n        }\n    }\n    /** Function being called whenever the trigger is being released. */\n    _onPointerUp() {\n        if (!this._isPointerDown) {\n            return;\n        }\n        this._isPointerDown = false;\n        // Fade-out all ripples that are visible and not persistent.\n        this._getActiveRipples().forEach(ripple => {\n            // By default, only ripples that are completely visible will fade out on pointer release.\n            // If the `terminateOnPointerUp` option is set, ripples that still fade in will also fade out.\n            const isVisible = ripple.state === 1 /* RippleState.VISIBLE */ ||\n                (ripple.config.terminateOnPointerUp && ripple.state === 0 /* RippleState.FADING_IN */);\n            if (!ripple.config.persistent && isVisible) {\n                ripple.fadeOut();\n            }\n        });\n    }\n    _getActiveRipples() {\n        return Array.from(this._activeRipples.keys());\n    }\n    /** Removes previously registered event listeners from the trigger element. */\n    _removeTriggerEvents() {\n        const trigger = this._triggerElement;\n        if (trigger) {\n            pointerDownEvents.forEach(type => RippleRenderer._eventManager.removeHandler(type, trigger, this));\n            if (this._pointerUpEventsRegistered) {\n                pointerUpEvents.forEach(type => trigger.removeEventListener(type, this, passiveCapturingEventOptions));\n            }\n        }\n    }\n}\nRippleRenderer._eventManager = new RippleEventManager();\n/**\n * Returns the distance from the point (x, y) to the furthest corner of a rectangle.\n */\nfunction distanceToFurthestCorner(x, y, rect) {\n    const distX = Math.max(Math.abs(x - rect.left), Math.abs(x - rect.right));\n    const distY = Math.max(Math.abs(y - rect.top), Math.abs(y - rect.bottom));\n    return Math.sqrt(distX * distX + distY * distY);\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Injection token that can be used to specify the global ripple options. */\nconst MAT_RIPPLE_GLOBAL_OPTIONS = new InjectionToken('mat-ripple-global-options');\nclass MatRipple {\n    /**\n     * Whether click events will not trigger the ripple. Ripples can be still launched manually\n     * by using the `launch()` method.\n     */\n    get disabled() {\n        return this._disabled;\n    }\n    set disabled(value) {\n        if (value) {\n            this.fadeOutAllNonPersistent();\n        }\n        this._disabled = value;\n        this._setupTriggerEventsIfEnabled();\n    }\n    /**\n     * The element that triggers the ripple when click events are received.\n     * Defaults to the directive's host element.\n     */\n    get trigger() {\n        return this._trigger || this._elementRef.nativeElement;\n    }\n    set trigger(trigger) {\n        this._trigger = trigger;\n        this._setupTriggerEventsIfEnabled();\n    }\n    constructor(_elementRef, ngZone, platform, globalOptions, _animationMode) {\n        this._elementRef = _elementRef;\n        this._animationMode = _animationMode;\n        /**\n         * If set, the radius in pixels of foreground ripples when fully expanded. If unset, the radius\n         * will be the distance from the center of the ripple to the furthest corner of the host element's\n         * bounding rectangle.\n         */\n        this.radius = 0;\n        this._disabled = false;\n        /** Whether ripple directive is initialized and the input bindings are set. */\n        this._isInitialized = false;\n        this._globalOptions = globalOptions || {};\n        this._rippleRenderer = new RippleRenderer(this, ngZone, _elementRef, platform);\n    }\n    ngOnInit() {\n        this._isInitialized = true;\n        this._setupTriggerEventsIfEnabled();\n    }\n    ngOnDestroy() {\n        this._rippleRenderer._removeTriggerEvents();\n    }\n    /** Fades out all currently showing ripple elements. */\n    fadeOutAll() {\n        this._rippleRenderer.fadeOutAll();\n    }\n    /** Fades out all currently showing non-persistent ripple elements. */\n    fadeOutAllNonPersistent() {\n        this._rippleRenderer.fadeOutAllNonPersistent();\n    }\n    /**\n     * Ripple configuration from the directive's input values.\n     * @docs-private Implemented as part of RippleTarget\n     */\n    get rippleConfig() {\n        return {\n            centered: this.centered,\n            radius: this.radius,\n            color: this.color,\n            animation: {\n                ...this._globalOptions.animation,\n                ...(this._animationMode === 'NoopAnimations' ? { enterDuration: 0, exitDuration: 0 } : {}),\n                ...this.animation,\n            },\n            terminateOnPointerUp: this._globalOptions.terminateOnPointerUp,\n        };\n    }\n    /**\n     * Whether ripples on pointer-down are disabled or not.\n     * @docs-private Implemented as part of RippleTarget\n     */\n    get rippleDisabled() {\n        return this.disabled || !!this._globalOptions.disabled;\n    }\n    /** Sets up the trigger event listeners if ripples are enabled. */\n    _setupTriggerEventsIfEnabled() {\n        if (!this.disabled && this._isInitialized) {\n            this._rippleRenderer.setupTriggerEvents(this.trigger);\n        }\n    }\n    /** Launches a manual ripple at the specified coordinated or just by the ripple config. */\n    launch(configOrX, y = 0, config) {\n        if (typeof configOrX === 'number') {\n            return this._rippleRenderer.fadeInRipple(configOrX, y, { ...this.rippleConfig, ...config });\n        }\n        else {\n            return this._rippleRenderer.fadeInRipple(0, 0, { ...this.rippleConfig, ...configOrX });\n        }\n    }\n}\nMatRipple.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatRipple, deps: [{ token: i0.ElementRef }, { token: i0.NgZone }, { token: i1$1.Platform }, { token: MAT_RIPPLE_GLOBAL_OPTIONS, optional: true }, { token: ANIMATION_MODULE_TYPE, optional: true }], target: i0.ɵɵFactoryTarget.Directive });\nMatRipple.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", type: MatRipple, selector: \"[mat-ripple], [matRipple]\", inputs: { color: [\"matRippleColor\", \"color\"], unbounded: [\"matRippleUnbounded\", \"unbounded\"], centered: [\"matRippleCentered\", \"centered\"], radius: [\"matRippleRadius\", \"radius\"], animation: [\"matRippleAnimation\", \"animation\"], disabled: [\"matRippleDisabled\", \"disabled\"], trigger: [\"matRippleTrigger\", \"trigger\"] }, host: { properties: { \"class.mat-ripple-unbounded\": \"unbounded\" }, classAttribute: \"mat-ripple\" }, exportAs: [\"matRipple\"], ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatRipple, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[mat-ripple], [matRipple]',\n                    exportAs: 'matRipple',\n                    host: {\n                        'class': 'mat-ripple',\n                        '[class.mat-ripple-unbounded]': 'unbounded',\n                    },\n                }]\n        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.NgZone }, { type: i1$1.Platform }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [MAT_RIPPLE_GLOBAL_OPTIONS]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [ANIMATION_MODULE_TYPE]\n                }] }]; }, propDecorators: { color: [{\n                type: Input,\n                args: ['matRippleColor']\n            }], unbounded: [{\n                type: Input,\n                args: ['matRippleUnbounded']\n            }], centered: [{\n                type: Input,\n                args: ['matRippleCentered']\n            }], radius: [{\n                type: Input,\n                args: ['matRippleRadius']\n            }], animation: [{\n                type: Input,\n                args: ['matRippleAnimation']\n            }], disabled: [{\n                type: Input,\n                args: ['matRippleDisabled']\n            }], trigger: [{\n                type: Input,\n                args: ['matRippleTrigger']\n            }] } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass MatRippleModule {\n}\nMatRippleModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatRippleModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nMatRippleModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatRippleModule, declarations: [MatRipple], imports: [MatCommonModule], exports: [MatRipple, MatCommonModule] });\nMatRippleModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatRippleModule, imports: [MatCommonModule, MatCommonModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatRippleModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    imports: [MatCommonModule],\n                    exports: [MatRipple, MatCommonModule],\n                    declarations: [MatRipple],\n                }]\n        }] });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Component that shows a simplified checkbox without including any kind of \"real\" checkbox.\n * Meant to be used when the checkbox is purely decorative and a large number of them will be\n * included, such as for the options in a multi-select. Uses no SVGs or complex animations.\n * Note that theming is meant to be handled by the parent element, e.g.\n * `mat-primary .mat-pseudo-checkbox`.\n *\n * Note that this component will be completely invisible to screen-reader users. This is *not*\n * interchangeable with `<mat-checkbox>` and should *not* be used if the user would directly\n * interact with the checkbox. The pseudo-checkbox should only be used as an implementation detail\n * of more complex components that appropriately handle selected / checked state.\n * @docs-private\n */\nclass MatPseudoCheckbox {\n    constructor(_animationMode) {\n        this._animationMode = _animationMode;\n        /** Display state of the checkbox. */\n        this.state = 'unchecked';\n        /** Whether the checkbox is disabled. */\n        this.disabled = false;\n        /**\n         * Appearance of the pseudo checkbox. Default appearance of 'full' renders a checkmark/mixedmark\n         * indicator inside a square box. 'minimal' appearance only renders the checkmark/mixedmark.\n         */\n        this.appearance = 'full';\n    }\n}\nMatPseudoCheckbox.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatPseudoCheckbox, deps: [{ token: ANIMATION_MODULE_TYPE, optional: true }], target: i0.ɵɵFactoryTarget.Component });\nMatPseudoCheckbox.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", type: MatPseudoCheckbox, selector: \"mat-pseudo-checkbox\", inputs: { state: \"state\", disabled: \"disabled\", appearance: \"appearance\" }, host: { properties: { \"class.mat-pseudo-checkbox-indeterminate\": \"state === \\\"indeterminate\\\"\", \"class.mat-pseudo-checkbox-checked\": \"state === \\\"checked\\\"\", \"class.mat-pseudo-checkbox-disabled\": \"disabled\", \"class.mat-pseudo-checkbox-minimal\": \"appearance === \\\"minimal\\\"\", \"class.mat-pseudo-checkbox-full\": \"appearance === \\\"full\\\"\", \"class._mat-animation-noopable\": \"_animationMode === \\\"NoopAnimations\\\"\" }, classAttribute: \"mat-pseudo-checkbox\" }, ngImport: i0, template: '', isInline: true, styles: [\".mat-pseudo-checkbox{border-radius:2px;cursor:pointer;display:inline-block;vertical-align:middle;box-sizing:border-box;position:relative;flex-shrink:0;transition:border-color 90ms cubic-bezier(0, 0, 0.2, 0.1),background-color 90ms cubic-bezier(0, 0, 0.2, 0.1)}.mat-pseudo-checkbox::after{position:absolute;opacity:0;content:\\\"\\\";border-bottom:2px solid currentColor;transition:opacity 90ms cubic-bezier(0, 0, 0.2, 0.1)}.mat-pseudo-checkbox._mat-animation-noopable{transition:none !important;animation:none !important}.mat-pseudo-checkbox._mat-animation-noopable::after{transition:none}.mat-pseudo-checkbox-disabled{cursor:default}.mat-pseudo-checkbox-indeterminate::after{left:1px;opacity:1;border-radius:2px}.mat-pseudo-checkbox-checked::after{left:1px;border-left:2px solid currentColor;transform:rotate(-45deg);opacity:1;box-sizing:content-box}.mat-pseudo-checkbox-full{border:2px solid}.mat-pseudo-checkbox-full.mat-pseudo-checkbox-checked,.mat-pseudo-checkbox-full.mat-pseudo-checkbox-indeterminate{border-color:rgba(0,0,0,0)}.mat-pseudo-checkbox{width:18px;height:18px}.mat-pseudo-checkbox-minimal.mat-pseudo-checkbox-checked::after{width:14px;height:6px;transform-origin:center;top:-4.2426406871px;left:0;bottom:0;right:0;margin:auto}.mat-pseudo-checkbox-minimal.mat-pseudo-checkbox-indeterminate::after{top:8px;width:16px}.mat-pseudo-checkbox-full.mat-pseudo-checkbox-checked::after{width:10px;height:4px;transform-origin:center;top:-2.8284271247px;left:0;bottom:0;right:0;margin:auto}.mat-pseudo-checkbox-full.mat-pseudo-checkbox-indeterminate::after{top:6px;width:12px}\"], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatPseudoCheckbox, decorators: [{\n            type: Component,\n            args: [{ encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.OnPush, selector: 'mat-pseudo-checkbox', template: '', host: {\n                        'class': 'mat-pseudo-checkbox',\n                        '[class.mat-pseudo-checkbox-indeterminate]': 'state === \"indeterminate\"',\n                        '[class.mat-pseudo-checkbox-checked]': 'state === \"checked\"',\n                        '[class.mat-pseudo-checkbox-disabled]': 'disabled',\n                        '[class.mat-pseudo-checkbox-minimal]': 'appearance === \"minimal\"',\n                        '[class.mat-pseudo-checkbox-full]': 'appearance === \"full\"',\n                        '[class._mat-animation-noopable]': '_animationMode === \"NoopAnimations\"',\n                    }, styles: [\".mat-pseudo-checkbox{border-radius:2px;cursor:pointer;display:inline-block;vertical-align:middle;box-sizing:border-box;position:relative;flex-shrink:0;transition:border-color 90ms cubic-bezier(0, 0, 0.2, 0.1),background-color 90ms cubic-bezier(0, 0, 0.2, 0.1)}.mat-pseudo-checkbox::after{position:absolute;opacity:0;content:\\\"\\\";border-bottom:2px solid currentColor;transition:opacity 90ms cubic-bezier(0, 0, 0.2, 0.1)}.mat-pseudo-checkbox._mat-animation-noopable{transition:none !important;animation:none !important}.mat-pseudo-checkbox._mat-animation-noopable::after{transition:none}.mat-pseudo-checkbox-disabled{cursor:default}.mat-pseudo-checkbox-indeterminate::after{left:1px;opacity:1;border-radius:2px}.mat-pseudo-checkbox-checked::after{left:1px;border-left:2px solid currentColor;transform:rotate(-45deg);opacity:1;box-sizing:content-box}.mat-pseudo-checkbox-full{border:2px solid}.mat-pseudo-checkbox-full.mat-pseudo-checkbox-checked,.mat-pseudo-checkbox-full.mat-pseudo-checkbox-indeterminate{border-color:rgba(0,0,0,0)}.mat-pseudo-checkbox{width:18px;height:18px}.mat-pseudo-checkbox-minimal.mat-pseudo-checkbox-checked::after{width:14px;height:6px;transform-origin:center;top:-4.2426406871px;left:0;bottom:0;right:0;margin:auto}.mat-pseudo-checkbox-minimal.mat-pseudo-checkbox-indeterminate::after{top:8px;width:16px}.mat-pseudo-checkbox-full.mat-pseudo-checkbox-checked::after{width:10px;height:4px;transform-origin:center;top:-2.8284271247px;left:0;bottom:0;right:0;margin:auto}.mat-pseudo-checkbox-full.mat-pseudo-checkbox-indeterminate::after{top:6px;width:12px}\"] }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [ANIMATION_MODULE_TYPE]\n                }] }]; }, propDecorators: { state: [{\n                type: Input\n            }], disabled: [{\n                type: Input\n            }], appearance: [{\n                type: Input\n            }] } });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass MatPseudoCheckboxModule {\n}\nMatPseudoCheckboxModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatPseudoCheckboxModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nMatPseudoCheckboxModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatPseudoCheckboxModule, declarations: [MatPseudoCheckbox], imports: [MatCommonModule], exports: [MatPseudoCheckbox] });\nMatPseudoCheckboxModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatPseudoCheckboxModule, imports: [MatCommonModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatPseudoCheckboxModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    imports: [MatCommonModule],\n                    exports: [MatPseudoCheckbox],\n                    declarations: [MatPseudoCheckbox],\n                }]\n        }] });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Injection token used to provide the parent component to options.\n */\nconst MAT_OPTION_PARENT_COMPONENT = new InjectionToken('MAT_OPTION_PARENT_COMPONENT');\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// Notes on the accessibility pattern used for `mat-optgroup`.\n// The option group has two different \"modes\": regular and inert. The regular mode uses the\n// recommended a11y pattern which has `role=\"group\"` on the group element with `aria-labelledby`\n// pointing to the label. This works for `mat-select`, but it seems to hit a bug for autocomplete\n// under VoiceOver where the group doesn't get read out at all. The bug appears to be that if\n// there's __any__ a11y-related attribute on the group (e.g. `role` or `aria-labelledby`),\n// VoiceOver on Safari won't read it out.\n// We've introduced the `inert` mode as a workaround. Under this mode, all a11y attributes are\n// removed from the group, and we get the screen reader to read out the group label by mirroring it\n// inside an invisible element in the option. This is sub-optimal, because the screen reader will\n// repeat the group label on each navigation, whereas the default pattern only reads the group when\n// the user enters a new group. The following alternate approaches were considered:\n// 1. Reading out the group label using the `LiveAnnouncer` solves the problem, but we can't control\n//    when the text will be read out so sometimes it comes in too late or never if the user\n//    navigates quickly.\n// 2. `<mat-option aria-describedby=\"groupLabel\"` - This works on Safari, but VoiceOver in Chrome\n//    won't read out the description at all.\n// 3. `<mat-option aria-labelledby=\"optionLabel groupLabel\"` - This works on Chrome, but Safari\n//     doesn't read out the text at all. Furthermore, on\n// Boilerplate for applying mixins to MatOptgroup.\n/** @docs-private */\nconst _MatOptgroupMixinBase = mixinDisabled(class {\n});\n// Counter for unique group ids.\nlet _uniqueOptgroupIdCounter = 0;\nclass _MatOptgroupBase extends _MatOptgroupMixinBase {\n    constructor(parent) {\n        super();\n        /** Unique id for the underlying label. */\n        this._labelId = `mat-optgroup-label-${_uniqueOptgroupIdCounter++}`;\n        this._inert = parent?.inertGroups ?? false;\n    }\n}\n_MatOptgroupBase.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: _MatOptgroupBase, deps: [{ token: MAT_OPTION_PARENT_COMPONENT, optional: true }], target: i0.ɵɵFactoryTarget.Directive });\n_MatOptgroupBase.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", type: _MatOptgroupBase, inputs: { label: \"label\" }, usesInheritance: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: _MatOptgroupBase, decorators: [{\n            type: Directive\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [MAT_OPTION_PARENT_COMPONENT]\n                }, {\n                    type: Optional\n                }] }]; }, propDecorators: { label: [{\n                type: Input\n            }] } });\n/**\n * Injection token that can be used to reference instances of `MatOptgroup`. It serves as\n * alternative token to the actual `MatOptgroup` class which could cause unnecessary\n * retention of the class and its component metadata.\n */\nconst MAT_OPTGROUP = new InjectionToken('MatOptgroup');\n/**\n * Component that is used to group instances of `mat-option`.\n */\nclass MatOptgroup extends _MatOptgroupBase {\n}\nMatOptgroup.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatOptgroup, deps: null, target: i0.ɵɵFactoryTarget.Component });\nMatOptgroup.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", type: MatOptgroup, selector: \"mat-optgroup\", inputs: { disabled: \"disabled\" }, host: { properties: { \"attr.role\": \"_inert ? null : \\\"group\\\"\", \"attr.aria-disabled\": \"_inert ? null : disabled.toString()\", \"attr.aria-labelledby\": \"_inert ? null : _labelId\" }, classAttribute: \"mat-mdc-optgroup\" }, providers: [{ provide: MAT_OPTGROUP, useExisting: MatOptgroup }], exportAs: [\"matOptgroup\"], usesInheritance: true, ngImport: i0, template: \"<span\\n  class=\\\"mat-mdc-optgroup-label\\\"\\n  aria-hidden=\\\"true\\\"\\n  [class.mdc-list-item--disabled]=\\\"disabled\\\"\\n  [id]=\\\"_labelId\\\">\\n  <span class=\\\"mdc-list-item__primary-text\\\">{{ label }} <ng-content></ng-content></span>\\n</span>\\n\\n<ng-content select=\\\"mat-option, ng-container\\\"></ng-content>\\n\", styles: [\".mat-mdc-optgroup-label{display:flex;position:relative;align-items:center;justify-content:flex-start;overflow:hidden;padding:0;padding-left:16px;padding-right:16px;min-height:48px}.mat-mdc-optgroup-label:focus{outline:none}[dir=rtl] .mat-mdc-optgroup-label,.mat-mdc-optgroup-label[dir=rtl]{padding-left:16px;padding-right:16px}.mat-mdc-optgroup-label.mdc-list-item--disabled{opacity:.38}.mat-mdc-optgroup-label .mdc-list-item__primary-text{white-space:normal}\"], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatOptgroup, decorators: [{\n            type: Component,\n            args: [{ selector: 'mat-optgroup', exportAs: 'matOptgroup', encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.OnPush, inputs: ['disabled'], host: {\n                        'class': 'mat-mdc-optgroup',\n                        '[attr.role]': '_inert ? null : \"group\"',\n                        '[attr.aria-disabled]': '_inert ? null : disabled.toString()',\n                        '[attr.aria-labelledby]': '_inert ? null : _labelId',\n                    }, providers: [{ provide: MAT_OPTGROUP, useExisting: MatOptgroup }], template: \"<span\\n  class=\\\"mat-mdc-optgroup-label\\\"\\n  aria-hidden=\\\"true\\\"\\n  [class.mdc-list-item--disabled]=\\\"disabled\\\"\\n  [id]=\\\"_labelId\\\">\\n  <span class=\\\"mdc-list-item__primary-text\\\">{{ label }} <ng-content></ng-content></span>\\n</span>\\n\\n<ng-content select=\\\"mat-option, ng-container\\\"></ng-content>\\n\", styles: [\".mat-mdc-optgroup-label{display:flex;position:relative;align-items:center;justify-content:flex-start;overflow:hidden;padding:0;padding-left:16px;padding-right:16px;min-height:48px}.mat-mdc-optgroup-label:focus{outline:none}[dir=rtl] .mat-mdc-optgroup-label,.mat-mdc-optgroup-label[dir=rtl]{padding-left:16px;padding-right:16px}.mat-mdc-optgroup-label.mdc-list-item--disabled{opacity:.38}.mat-mdc-optgroup-label .mdc-list-item__primary-text{white-space:normal}\"] }]\n        }] });\n\n/**\n * Option IDs need to be unique across components, so this counter exists outside of\n * the component definition.\n */\nlet _uniqueIdCounter = 0;\n/** Event object emitted by MatOption when selected or deselected. */\nclass MatOptionSelectionChange {\n    constructor(\n    /** Reference to the option that emitted the event. */\n    source, \n    /** Whether the change in the option's value was a result of a user action. */\n    isUserInput = false) {\n        this.source = source;\n        this.isUserInput = isUserInput;\n    }\n}\nclass _MatOptionBase {\n    /** Whether the wrapping component is in multiple selection mode. */\n    get multiple() {\n        return this._parent && this._parent.multiple;\n    }\n    /** Whether or not the option is currently selected. */\n    get selected() {\n        return this._selected;\n    }\n    /** Whether the option is disabled. */\n    get disabled() {\n        return (this.group && this.group.disabled) || this._disabled;\n    }\n    set disabled(value) {\n        this._disabled = coerceBooleanProperty(value);\n    }\n    /** Whether ripples for the option are disabled. */\n    get disableRipple() {\n        return !!(this._parent && this._parent.disableRipple);\n    }\n    /** Whether to display checkmark for single-selection. */\n    get hideSingleSelectionIndicator() {\n        return !!(this._parent && this._parent.hideSingleSelectionIndicator);\n    }\n    constructor(_element, _changeDetectorRef, _parent, group) {\n        this._element = _element;\n        this._changeDetectorRef = _changeDetectorRef;\n        this._parent = _parent;\n        this.group = group;\n        this._selected = false;\n        this._active = false;\n        this._disabled = false;\n        this._mostRecentViewValue = '';\n        /** The unique ID of the option. */\n        this.id = `mat-option-${_uniqueIdCounter++}`;\n        /** Event emitted when the option is selected or deselected. */\n        // tslint:disable-next-line:no-output-on-prefix\n        this.onSelectionChange = new EventEmitter();\n        /** Emits when the state of the option changes and any parents have to be notified. */\n        this._stateChanges = new Subject();\n    }\n    /**\n     * Whether or not the option is currently active and ready to be selected.\n     * An active option displays styles as if it is focused, but the\n     * focus is actually retained somewhere else. This comes in handy\n     * for components like autocomplete where focus must remain on the input.\n     */\n    get active() {\n        return this._active;\n    }\n    /**\n     * The displayed value of the option. It is necessary to show the selected option in the\n     * select's trigger.\n     */\n    get viewValue() {\n        // TODO(kara): Add input property alternative for node envs.\n        return (this._text?.nativeElement.textContent || '').trim();\n    }\n    /** Selects the option. */\n    select() {\n        if (!this._selected) {\n            this._selected = true;\n            this._changeDetectorRef.markForCheck();\n            this._emitSelectionChangeEvent();\n        }\n    }\n    /** Deselects the option. */\n    deselect() {\n        if (this._selected) {\n            this._selected = false;\n            this._changeDetectorRef.markForCheck();\n            this._emitSelectionChangeEvent();\n        }\n    }\n    /** Sets focus onto this option. */\n    focus(_origin, options) {\n        // Note that we aren't using `_origin`, but we need to keep it because some internal consumers\n        // use `MatOption` in a `FocusKeyManager` and we need it to match `FocusableOption`.\n        const element = this._getHostElement();\n        if (typeof element.focus === 'function') {\n            element.focus(options);\n        }\n    }\n    /**\n     * This method sets display styles on the option to make it appear\n     * active. This is used by the ActiveDescendantKeyManager so key\n     * events will display the proper options as active on arrow key events.\n     */\n    setActiveStyles() {\n        if (!this._active) {\n            this._active = true;\n            this._changeDetectorRef.markForCheck();\n        }\n    }\n    /**\n     * This method removes display styles on the option that made it appear\n     * active. This is used by the ActiveDescendantKeyManager so key\n     * events will display the proper options as active on arrow key events.\n     */\n    setInactiveStyles() {\n        if (this._active) {\n            this._active = false;\n            this._changeDetectorRef.markForCheck();\n        }\n    }\n    /** Gets the label to be used when determining whether the option should be focused. */\n    getLabel() {\n        return this.viewValue;\n    }\n    /** Ensures the option is selected when activated from the keyboard. */\n    _handleKeydown(event) {\n        if ((event.keyCode === ENTER || event.keyCode === SPACE) && !hasModifierKey(event)) {\n            this._selectViaInteraction();\n            // Prevent the page from scrolling down and form submits.\n            event.preventDefault();\n        }\n    }\n    /**\n     * `Selects the option while indicating the selection came from the user. Used to\n     * determine if the select's view -> model callback should be invoked.`\n     */\n    _selectViaInteraction() {\n        if (!this.disabled) {\n            this._selected = this.multiple ? !this._selected : true;\n            this._changeDetectorRef.markForCheck();\n            this._emitSelectionChangeEvent(true);\n        }\n    }\n    /** Returns the correct tabindex for the option depending on disabled state. */\n    // This method is only used by `MatLegacyOption`. Keeping it here to avoid breaking the types.\n    // That's because `MatLegacyOption` use `MatOption` type in a few places such as\n    // `MatOptionSelectionChange`. It is safe to delete this when `MatLegacyOption` is deleted.\n    _getTabIndex() {\n        return this.disabled ? '-1' : '0';\n    }\n    /** Gets the host DOM element. */\n    _getHostElement() {\n        return this._element.nativeElement;\n    }\n    ngAfterViewChecked() {\n        // Since parent components could be using the option's label to display the selected values\n        // (e.g. `mat-select`) and they don't have a way of knowing if the option's label has changed\n        // we have to check for changes in the DOM ourselves and dispatch an event. These checks are\n        // relatively cheap, however we still limit them only to selected options in order to avoid\n        // hitting the DOM too often.\n        if (this._selected) {\n            const viewValue = this.viewValue;\n            if (viewValue !== this._mostRecentViewValue) {\n                if (this._mostRecentViewValue) {\n                    this._stateChanges.next();\n                }\n                this._mostRecentViewValue = viewValue;\n            }\n        }\n    }\n    ngOnDestroy() {\n        this._stateChanges.complete();\n    }\n    /** Emits the selection change event. */\n    _emitSelectionChangeEvent(isUserInput = false) {\n        this.onSelectionChange.emit(new MatOptionSelectionChange(this, isUserInput));\n    }\n}\n_MatOptionBase.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: _MatOptionBase, deps: \"invalid\", target: i0.ɵɵFactoryTarget.Directive });\n_MatOptionBase.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", type: _MatOptionBase, inputs: { value: \"value\", id: \"id\", disabled: \"disabled\" }, outputs: { onSelectionChange: \"onSelectionChange\" }, viewQueries: [{ propertyName: \"_text\", first: true, predicate: [\"text\"], descendants: true, static: true }], ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: _MatOptionBase, decorators: [{\n            type: Directive\n        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.ChangeDetectorRef }, { type: undefined }, { type: _MatOptgroupBase }]; }, propDecorators: { value: [{\n                type: Input\n            }], id: [{\n                type: Input\n            }], disabled: [{\n                type: Input\n            }], onSelectionChange: [{\n                type: Output\n            }], _text: [{\n                type: ViewChild,\n                args: ['text', { static: true }]\n            }] } });\n/**\n * Single option inside of a `<mat-select>` element.\n */\nclass MatOption extends _MatOptionBase {\n    constructor(element, changeDetectorRef, parent, group) {\n        super(element, changeDetectorRef, parent, group);\n    }\n}\nMatOption.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatOption, deps: [{ token: i0.ElementRef }, { token: i0.ChangeDetectorRef }, { token: MAT_OPTION_PARENT_COMPONENT, optional: true }, { token: MAT_OPTGROUP, optional: true }], target: i0.ɵɵFactoryTarget.Component });\nMatOption.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", type: MatOption, selector: \"mat-option\", host: { attributes: { \"role\": \"option\" }, listeners: { \"click\": \"_selectViaInteraction()\", \"keydown\": \"_handleKeydown($event)\" }, properties: { \"class.mdc-list-item--selected\": \"selected\", \"class.mat-mdc-option-multiple\": \"multiple\", \"class.mat-mdc-option-active\": \"active\", \"class.mdc-list-item--disabled\": \"disabled\", \"id\": \"id\", \"attr.aria-selected\": \"selected\", \"attr.aria-disabled\": \"disabled.toString()\" }, classAttribute: \"mat-mdc-option mdc-list-item\" }, exportAs: [\"matOption\"], usesInheritance: true, ngImport: i0, template: \"<mat-pseudo-checkbox *ngIf=\\\"multiple\\\" class=\\\"mat-mdc-option-pseudo-checkbox\\\"\\n    [state]=\\\"selected ? 'checked' : 'unchecked'\\\" [disabled]=\\\"disabled\\\"></mat-pseudo-checkbox>\\n\\n<ng-content select=\\\"mat-icon\\\"></ng-content>\\n\\n<span class=\\\"mdc-list-item__primary-text\\\" #text><ng-content></ng-content></span>\\n\\n<!-- Render checkmark at the end for single-selection. -->\\n<mat-pseudo-checkbox *ngIf=\\\"!multiple && selected && !hideSingleSelectionIndicator\\\"\\n    class=\\\"mat-mdc-option-pseudo-checkbox\\\" state=\\\"checked\\\" [disabled]=\\\"disabled\\\"\\n    appearance=\\\"minimal\\\"></mat-pseudo-checkbox>\\n\\n<!-- See a11y notes inside optgroup.ts for context behind this element. -->\\n<span class=\\\"cdk-visually-hidden\\\" *ngIf=\\\"group && group._inert\\\">({{ group.label }})</span>\\n\\n<div class=\\\"mat-mdc-option-ripple mat-mdc-focus-indicator\\\" mat-ripple\\n     [matRippleTrigger]=\\\"_getHostElement()\\\"\\n     [matRippleDisabled]=\\\"disabled || disableRipple\\\">\\n</div>\\n\", styles: [\".mat-mdc-option{display:flex;position:relative;align-items:center;justify-content:flex-start;overflow:hidden;padding:0;padding-left:16px;padding-right:16px;-webkit-user-select:none;user-select:none;cursor:pointer;-webkit-tap-highlight-color:rgba(0,0,0,0);min-height:48px}.mat-mdc-option:focus{outline:none}[dir=rtl] .mat-mdc-option,.mat-mdc-option[dir=rtl]{padding-left:16px;padding-right:16px}.mat-mdc-option.mdc-list-item{align-items:center}.mat-mdc-option.mdc-list-item--disabled{opacity:.38;cursor:default}.mat-mdc-optgroup .mat-mdc-option:not(.mat-mdc-option-multiple){padding-left:32px}[dir=rtl] .mat-mdc-optgroup .mat-mdc-option:not(.mat-mdc-option-multiple){padding-left:16px;padding-right:32px}.mat-mdc-option .mat-icon,.mat-mdc-option .mat-pseudo-checkbox-full{margin-right:16px;flex-shrink:0}[dir=rtl] .mat-mdc-option .mat-icon,[dir=rtl] .mat-mdc-option .mat-pseudo-checkbox-full{margin-right:0;margin-left:16px}.mat-mdc-option .mat-pseudo-checkbox-minimal{margin-left:16px;flex-shrink:0}[dir=rtl] .mat-mdc-option .mat-pseudo-checkbox-minimal{margin-right:16px;margin-left:0}.mat-mdc-option .mat-mdc-option-ripple{top:0;left:0;right:0;bottom:0;position:absolute;pointer-events:none}.mat-mdc-option .mdc-list-item__primary-text{white-space:normal;font-size:inherit;font-weight:inherit;letter-spacing:inherit;line-height:inherit;font-family:inherit;text-decoration:inherit;text-transform:inherit;margin-right:auto}[dir=rtl] .mat-mdc-option .mdc-list-item__primary-text{margin-right:0;margin-left:auto}.cdk-high-contrast-active .mat-mdc-option.mdc-list-item--selected:not(.mat-mdc-option-multiple)::after{content:\\\"\\\";position:absolute;top:50%;right:16px;transform:translateY(-50%);width:10px;height:0;border-bottom:solid 10px;border-radius:10px}[dir=rtl] .cdk-high-contrast-active .mat-mdc-option.mdc-list-item--selected:not(.mat-mdc-option-multiple)::after{right:auto;left:16px}.mat-mdc-option-active .mat-mdc-focus-indicator::before{content:\\\"\\\"}\"], dependencies: [{ kind: \"directive\", type: MatRipple, selector: \"[mat-ripple], [matRipple]\", inputs: [\"matRippleColor\", \"matRippleUnbounded\", \"matRippleCentered\", \"matRippleRadius\", \"matRippleAnimation\", \"matRippleDisabled\", \"matRippleTrigger\"], exportAs: [\"matRipple\"] }, { kind: \"directive\", type: i3.NgIf, selector: \"[ngIf]\", inputs: [\"ngIf\", \"ngIfThen\", \"ngIfElse\"] }, { kind: \"component\", type: MatPseudoCheckbox, selector: \"mat-pseudo-checkbox\", inputs: [\"state\", \"disabled\", \"appearance\"] }], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatOption, decorators: [{\n            type: Component,\n            args: [{ selector: 'mat-option', exportAs: 'matOption', host: {\n                        'role': 'option',\n                        '[class.mdc-list-item--selected]': 'selected',\n                        '[class.mat-mdc-option-multiple]': 'multiple',\n                        '[class.mat-mdc-option-active]': 'active',\n                        '[class.mdc-list-item--disabled]': 'disabled',\n                        '[id]': 'id',\n                        // Set aria-selected to false for non-selected items and true for selected items. Conform to\n                        // [WAI ARIA Listbox authoring practices guide](\n                        //  https://www.w3.org/WAI/ARIA/apg/patterns/listbox/), \"If any options are selected, each\n                        // selected option has either aria-selected or aria-checked  set to true. All options that are\n                        // selectable but not selected have either aria-selected or aria-checked set to false.\" Align\n                        // aria-selected implementation of Chips and List components.\n                        //\n                        // Set `aria-selected=\"false\"` on not-selected listbox options to fix VoiceOver announcing\n                        // every option as \"selected\" (#21491).\n                        '[attr.aria-selected]': 'selected',\n                        '[attr.aria-disabled]': 'disabled.toString()',\n                        '(click)': '_selectViaInteraction()',\n                        '(keydown)': '_handleKeydown($event)',\n                        'class': 'mat-mdc-option mdc-list-item',\n                    }, encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.OnPush, template: \"<mat-pseudo-checkbox *ngIf=\\\"multiple\\\" class=\\\"mat-mdc-option-pseudo-checkbox\\\"\\n    [state]=\\\"selected ? 'checked' : 'unchecked'\\\" [disabled]=\\\"disabled\\\"></mat-pseudo-checkbox>\\n\\n<ng-content select=\\\"mat-icon\\\"></ng-content>\\n\\n<span class=\\\"mdc-list-item__primary-text\\\" #text><ng-content></ng-content></span>\\n\\n<!-- Render checkmark at the end for single-selection. -->\\n<mat-pseudo-checkbox *ngIf=\\\"!multiple && selected && !hideSingleSelectionIndicator\\\"\\n    class=\\\"mat-mdc-option-pseudo-checkbox\\\" state=\\\"checked\\\" [disabled]=\\\"disabled\\\"\\n    appearance=\\\"minimal\\\"></mat-pseudo-checkbox>\\n\\n<!-- See a11y notes inside optgroup.ts for context behind this element. -->\\n<span class=\\\"cdk-visually-hidden\\\" *ngIf=\\\"group && group._inert\\\">({{ group.label }})</span>\\n\\n<div class=\\\"mat-mdc-option-ripple mat-mdc-focus-indicator\\\" mat-ripple\\n     [matRippleTrigger]=\\\"_getHostElement()\\\"\\n     [matRippleDisabled]=\\\"disabled || disableRipple\\\">\\n</div>\\n\", styles: [\".mat-mdc-option{display:flex;position:relative;align-items:center;justify-content:flex-start;overflow:hidden;padding:0;padding-left:16px;padding-right:16px;-webkit-user-select:none;user-select:none;cursor:pointer;-webkit-tap-highlight-color:rgba(0,0,0,0);min-height:48px}.mat-mdc-option:focus{outline:none}[dir=rtl] .mat-mdc-option,.mat-mdc-option[dir=rtl]{padding-left:16px;padding-right:16px}.mat-mdc-option.mdc-list-item{align-items:center}.mat-mdc-option.mdc-list-item--disabled{opacity:.38;cursor:default}.mat-mdc-optgroup .mat-mdc-option:not(.mat-mdc-option-multiple){padding-left:32px}[dir=rtl] .mat-mdc-optgroup .mat-mdc-option:not(.mat-mdc-option-multiple){padding-left:16px;padding-right:32px}.mat-mdc-option .mat-icon,.mat-mdc-option .mat-pseudo-checkbox-full{margin-right:16px;flex-shrink:0}[dir=rtl] .mat-mdc-option .mat-icon,[dir=rtl] .mat-mdc-option .mat-pseudo-checkbox-full{margin-right:0;margin-left:16px}.mat-mdc-option .mat-pseudo-checkbox-minimal{margin-left:16px;flex-shrink:0}[dir=rtl] .mat-mdc-option .mat-pseudo-checkbox-minimal{margin-right:16px;margin-left:0}.mat-mdc-option .mat-mdc-option-ripple{top:0;left:0;right:0;bottom:0;position:absolute;pointer-events:none}.mat-mdc-option .mdc-list-item__primary-text{white-space:normal;font-size:inherit;font-weight:inherit;letter-spacing:inherit;line-height:inherit;font-family:inherit;text-decoration:inherit;text-transform:inherit;margin-right:auto}[dir=rtl] .mat-mdc-option .mdc-list-item__primary-text{margin-right:0;margin-left:auto}.cdk-high-contrast-active .mat-mdc-option.mdc-list-item--selected:not(.mat-mdc-option-multiple)::after{content:\\\"\\\";position:absolute;top:50%;right:16px;transform:translateY(-50%);width:10px;height:0;border-bottom:solid 10px;border-radius:10px}[dir=rtl] .cdk-high-contrast-active .mat-mdc-option.mdc-list-item--selected:not(.mat-mdc-option-multiple)::after{right:auto;left:16px}.mat-mdc-option-active .mat-mdc-focus-indicator::before{content:\\\"\\\"}\"] }]\n        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.ChangeDetectorRef }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [MAT_OPTION_PARENT_COMPONENT]\n                }] }, { type: MatOptgroup, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [MAT_OPTGROUP]\n                }] }]; } });\n/**\n * Counts the amount of option group labels that precede the specified option.\n * @param optionIndex Index of the option at which to start counting.\n * @param options Flat list of all of the options.\n * @param optionGroups Flat list of all of the option groups.\n * @docs-private\n */\nfunction _countGroupLabelsBeforeOption(optionIndex, options, optionGroups) {\n    if (optionGroups.length) {\n        let optionsArray = options.toArray();\n        let groups = optionGroups.toArray();\n        let groupCounter = 0;\n        for (let i = 0; i < optionIndex + 1; i++) {\n            if (optionsArray[i].group && optionsArray[i].group === groups[groupCounter]) {\n                groupCounter++;\n            }\n        }\n        return groupCounter;\n    }\n    return 0;\n}\n/**\n * Determines the position to which to scroll a panel in order for an option to be into view.\n * @param optionOffset Offset of the option from the top of the panel.\n * @param optionHeight Height of the options.\n * @param currentScrollPosition Current scroll position of the panel.\n * @param panelHeight Height of the panel.\n * @docs-private\n */\nfunction _getOptionScrollPosition(optionOffset, optionHeight, currentScrollPosition, panelHeight) {\n    if (optionOffset < currentScrollPosition) {\n        return optionOffset;\n    }\n    if (optionOffset + optionHeight > currentScrollPosition + panelHeight) {\n        return Math.max(0, optionOffset - panelHeight + optionHeight);\n    }\n    return currentScrollPosition;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass MatOptionModule {\n}\nMatOptionModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatOptionModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nMatOptionModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatOptionModule, declarations: [MatOption, MatOptgroup], imports: [MatRippleModule, CommonModule, MatCommonModule, MatPseudoCheckboxModule], exports: [MatOption, MatOptgroup] });\nMatOptionModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatOptionModule, imports: [MatRippleModule, CommonModule, MatCommonModule, MatPseudoCheckboxModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatOptionModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    imports: [MatRippleModule, CommonModule, MatCommonModule, MatPseudoCheckboxModule],\n                    exports: [MatOption, MatOptgroup],\n                    declarations: [MatOption, MatOptgroup],\n                }]\n        }] });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { AnimationCurves, AnimationDurations, DateAdapter, ErrorStateMatcher, MATERIAL_SANITY_CHECKS, MAT_DATE_FORMATS, MAT_DATE_LOCALE, MAT_DATE_LOCALE_FACTORY, MAT_NATIVE_DATE_FORMATS, MAT_OPTGROUP, MAT_OPTION_PARENT_COMPONENT, MAT_RIPPLE_GLOBAL_OPTIONS, MatCommonModule, MatLine, MatLineModule, MatNativeDateModule, MatOptgroup, MatOption, MatOptionModule, MatOptionSelectionChange, MatPseudoCheckbox, MatPseudoCheckboxModule, MatRipple, MatRippleModule, NativeDateAdapter, NativeDateModule, RippleRef, RippleRenderer, ShowOnDirtyErrorStateMatcher, VERSION, _MatOptgroupBase, _MatOptionBase, _countGroupLabelsBeforeOption, _getOptionScrollPosition, defaultRippleAnimationConfig, mixinColor, mixinDisableRipple, mixinDisabled, mixinErrorState, mixinInitialized, mixinTabIndex, setLines };\n","import * as i3 from '@angular/common';\nimport { DOCUMENT, CommonModule } from '@angular/common';\nimport * as i0 from '@angular/core';\nimport { forwardRef, EventEmitter, Component, ViewEncapsulation, ChangeDetectionStrategy, Optional, Attribute, Inject, Input, Output, ViewChild, NgModule } from '@angular/core';\nimport { mixinTabIndex, mixinColor, mixinDisabled, MatCommonModule } from '@angular/material/core';\nimport * as i1 from '@angular/cdk/a11y';\nimport * as i2 from '@angular/cdk/bidi';\nimport { coerceBooleanProperty, coerceNumberProperty } from '@angular/cdk/coercion';\nimport { hasModifierKey, DOWN_ARROW, RIGHT_ARROW, UP_ARROW, LEFT_ARROW, HOME, END, PAGE_DOWN, PAGE_UP } from '@angular/cdk/keycodes';\nimport { NG_VALUE_ACCESSOR } from '@angular/forms';\nimport { ANIMATION_MODULE_TYPE } from '@angular/platform-browser/animations';\nimport { normalizePassiveListenerOptions } from '@angular/cdk/platform';\nimport { Subscription } from 'rxjs';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nconst activeEventOptions = normalizePassiveListenerOptions({ passive: false });\n/**\n * Visually, a 30px separation between tick marks looks best. This is very subjective but it is\n * the default separation we chose.\n */\nconst MIN_AUTO_TICK_SEPARATION = 30;\n/** The thumb gap size for a disabled slider. */\nconst DISABLED_THUMB_GAP = 7;\n/** The thumb gap size for a non-active slider at its minimum value. */\nconst MIN_VALUE_NONACTIVE_THUMB_GAP = 7;\n/** The thumb gap size for an active slider at its minimum value. */\nconst MIN_VALUE_ACTIVE_THUMB_GAP = 10;\n/**\n * Provider Expression that allows mat-slider to register as a ControlValueAccessor.\n * This allows it to support [(ngModel)] and [formControl].\n * @docs-private\n * @deprecated Use `MAT_SLIDER_VALUE_ACCESSOR` from `@angular/material/slider` instead. See https://material.angular.io/guide/mdc-migration for information about migrating.\n * @breaking-change 17.0.0\n */\nconst MAT_LEGACY_SLIDER_VALUE_ACCESSOR = {\n    provide: NG_VALUE_ACCESSOR,\n    useExisting: forwardRef(() => MatLegacySlider),\n    multi: true,\n};\n/**\n * A simple change event emitted by the MatSlider component.\n * @deprecated Use `MatSliderChange` from `@angular/material/slider` instead. See https://material.angular.io/guide/mdc-migration for information about migrating.\n * @breaking-change 17.0.0\n */\nclass MatLegacySliderChange {\n}\n// Boilerplate for applying mixins to MatSlider.\n/** @docs-private */\nconst _MatSliderBase = mixinTabIndex(mixinColor(mixinDisabled(class {\n    constructor(_elementRef) {\n        this._elementRef = _elementRef;\n    }\n}), 'accent'));\n/**\n * Allows users to select from a range of values by moving the slider thumb. It is similar in\n * behavior to the native `<input type=\"range\">` element.\n * @deprecated Use `MatSlider` from `@angular/material/slider` instead. See https://material.angular.io/guide/mdc-migration for information about migrating.\n * @breaking-change 17.0.0\n */\nclass MatLegacySlider extends _MatSliderBase {\n    /** Whether the slider is inverted. */\n    get invert() {\n        return this._invert;\n    }\n    set invert(value) {\n        this._invert = coerceBooleanProperty(value);\n    }\n    /** The maximum value that the slider can have. */\n    get max() {\n        return this._max;\n    }\n    set max(v) {\n        this._max = coerceNumberProperty(v, this._max);\n        this._percent = this._calculatePercentage(this._value);\n        // Since this also modifies the percentage, we need to let the change detection know.\n        this._changeDetectorRef.markForCheck();\n    }\n    /** The minimum value that the slider can have. */\n    get min() {\n        return this._min;\n    }\n    set min(v) {\n        this._min = coerceNumberProperty(v, this._min);\n        this._percent = this._calculatePercentage(this._value);\n        // Since this also modifies the percentage, we need to let the change detection know.\n        this._changeDetectorRef.markForCheck();\n    }\n    /** The values at which the thumb will snap. */\n    get step() {\n        return this._step;\n    }\n    set step(v) {\n        this._step = coerceNumberProperty(v, this._step);\n        if (this._step % 1 !== 0) {\n            this._roundToDecimal = this._step.toString().split('.').pop().length;\n        }\n        // Since this could modify the label, we need to notify the change detection.\n        this._changeDetectorRef.markForCheck();\n    }\n    /** Whether or not to show the thumb label. */\n    get thumbLabel() {\n        return this._thumbLabel;\n    }\n    set thumbLabel(value) {\n        this._thumbLabel = coerceBooleanProperty(value);\n    }\n    /**\n     * How often to show ticks. Relative to the step so that a tick always appears on a step.\n     * Ex: Tick interval of 4 with a step of 3 will draw a tick every 4 steps (every 12 values).\n     */\n    get tickInterval() {\n        return this._tickInterval;\n    }\n    set tickInterval(value) {\n        if (value === 'auto') {\n            this._tickInterval = 'auto';\n        }\n        else if (typeof value === 'number' || typeof value === 'string') {\n            this._tickInterval = coerceNumberProperty(value, this._tickInterval);\n        }\n        else {\n            this._tickInterval = 0;\n        }\n    }\n    /** Value of the slider. */\n    get value() {\n        // If the value needs to be read and it is still uninitialized, initialize it to the min.\n        if (this._value === null) {\n            this.value = this._min;\n        }\n        return this._value;\n    }\n    set value(v) {\n        if (v !== this._value) {\n            let value = coerceNumberProperty(v, 0);\n            // While incrementing by a decimal we can end up with values like 33.300000000000004.\n            // Truncate it to ensure that it matches the label and to make it easier to work with.\n            if (this._roundToDecimal && value !== this.min && value !== this.max) {\n                value = parseFloat(value.toFixed(this._roundToDecimal));\n            }\n            this._value = value;\n            this._percent = this._calculatePercentage(this._value);\n            // Since this also modifies the percentage, we need to let the change detection know.\n            this._changeDetectorRef.markForCheck();\n        }\n    }\n    /** Whether the slider is vertical. */\n    get vertical() {\n        return this._vertical;\n    }\n    set vertical(value) {\n        this._vertical = coerceBooleanProperty(value);\n    }\n    /** The value to be used for display purposes. */\n    get displayValue() {\n        if (this.displayWith) {\n            // Value is never null but since setters and getters cannot have\n            // different types, the value getter is also typed to return null.\n            return this.displayWith(this.value);\n        }\n        // Note that this could be improved further by rounding something like 0.999 to 1 or\n        // 0.899 to 0.9, however it is very performance sensitive, because it gets called on\n        // every change detection cycle.\n        if (this._roundToDecimal && this.value && this.value % 1 !== 0) {\n            return this.value.toFixed(this._roundToDecimal);\n        }\n        return this.value || 0;\n    }\n    /** set focus to the host element */\n    focus(options) {\n        this._focusHostElement(options);\n    }\n    /** blur the host element */\n    blur() {\n        this._blurHostElement();\n    }\n    /** The percentage of the slider that coincides with the value. */\n    get percent() {\n        return this._clamp(this._percent);\n    }\n    /**\n     * Whether the axis of the slider is inverted.\n     * (i.e. whether moving the thumb in the positive x or y direction decreases the slider's value).\n     */\n    _shouldInvertAxis() {\n        // Standard non-inverted mode for a vertical slider should be dragging the thumb from bottom to\n        // top. However from a y-axis standpoint this is inverted.\n        return this.vertical ? !this.invert : this.invert;\n    }\n    /** Whether the slider is at its minimum value. */\n    _isMinValue() {\n        return this.percent === 0;\n    }\n    /**\n     * The amount of space to leave between the slider thumb and the track fill & track background\n     * elements.\n     */\n    _getThumbGap() {\n        if (this.disabled) {\n            return DISABLED_THUMB_GAP;\n        }\n        if (this._isMinValue() && !this.thumbLabel) {\n            return this._isActive ? MIN_VALUE_ACTIVE_THUMB_GAP : MIN_VALUE_NONACTIVE_THUMB_GAP;\n        }\n        return 0;\n    }\n    /** CSS styles for the track background element. */\n    _getTrackBackgroundStyles() {\n        const axis = this.vertical ? 'Y' : 'X';\n        const scale = this.vertical ? `1, ${1 - this.percent}, 1` : `${1 - this.percent}, 1, 1`;\n        const sign = this._shouldInvertMouseCoords() ? '-' : '';\n        return {\n            // scale3d avoids some rendering issues in Chrome. See #12071.\n            transform: `translate${axis}(${sign}${this._getThumbGap()}px) scale3d(${scale})`,\n        };\n    }\n    /** CSS styles for the track fill element. */\n    _getTrackFillStyles() {\n        const percent = this.percent;\n        const axis = this.vertical ? 'Y' : 'X';\n        const scale = this.vertical ? `1, ${percent}, 1` : `${percent}, 1, 1`;\n        const sign = this._shouldInvertMouseCoords() ? '' : '-';\n        return {\n            // scale3d avoids some rendering issues in Chrome. See #12071.\n            transform: `translate${axis}(${sign}${this._getThumbGap()}px) scale3d(${scale})`,\n            // iOS Safari has a bug where it won't re-render elements which start of as `scale(0)` until\n            // something forces a style recalculation on it. Since we'll end up with `scale(0)` when\n            // the value of the slider is 0, we can easily get into this situation. We force a\n            // recalculation by changing the element's `display` when it goes from 0 to any other value.\n            display: percent === 0 ? 'none' : '',\n        };\n    }\n    /** CSS styles for the ticks container element. */\n    _getTicksContainerStyles() {\n        let axis = this.vertical ? 'Y' : 'X';\n        // For a horizontal slider in RTL languages we push the ticks container off the left edge\n        // instead of the right edge to avoid causing a horizontal scrollbar to appear.\n        let sign = !this.vertical && this._getDirection() == 'rtl' ? '' : '-';\n        let offset = (this._tickIntervalPercent / 2) * 100;\n        return {\n            'transform': `translate${axis}(${sign}${offset}%)`,\n        };\n    }\n    /** CSS styles for the ticks element. */\n    _getTicksStyles() {\n        let tickSize = this._tickIntervalPercent * 100;\n        let backgroundSize = this.vertical ? `2px ${tickSize}%` : `${tickSize}% 2px`;\n        let axis = this.vertical ? 'Y' : 'X';\n        // Depending on the direction we pushed the ticks container, push the ticks the opposite\n        // direction to re-center them but clip off the end edge. In RTL languages we need to flip the\n        // ticks 180 degrees so we're really cutting off the end edge abd not the start.\n        let sign = !this.vertical && this._getDirection() == 'rtl' ? '-' : '';\n        let rotate = !this.vertical && this._getDirection() == 'rtl' ? ' rotate(180deg)' : '';\n        let styles = {\n            'backgroundSize': backgroundSize,\n            // Without translateZ ticks sometimes jitter as the slider moves on Chrome & Firefox.\n            'transform': `translateZ(0) translate${axis}(${sign}${tickSize / 2}%)${rotate}`,\n        };\n        if (this._isMinValue() && this._getThumbGap()) {\n            const shouldInvertAxis = this._shouldInvertAxis();\n            let side;\n            if (this.vertical) {\n                side = shouldInvertAxis ? 'Bottom' : 'Top';\n            }\n            else {\n                side = shouldInvertAxis ? 'Right' : 'Left';\n            }\n            styles[`padding${side}`] = `${this._getThumbGap()}px`;\n        }\n        return styles;\n    }\n    _getThumbContainerStyles() {\n        const shouldInvertAxis = this._shouldInvertAxis();\n        let axis = this.vertical ? 'Y' : 'X';\n        // For a horizontal slider in RTL languages we push the thumb container off the left edge\n        // instead of the right edge to avoid causing a horizontal scrollbar to appear.\n        let invertOffset = this._getDirection() == 'rtl' && !this.vertical ? !shouldInvertAxis : shouldInvertAxis;\n        let offset = (invertOffset ? this.percent : 1 - this.percent) * 100;\n        return {\n            'transform': `translate${axis}(-${offset}%)`,\n        };\n    }\n    /**\n     * Whether mouse events should be converted to a slider position by calculating their distance\n     * from the right or bottom edge of the slider as opposed to the top or left.\n     */\n    _shouldInvertMouseCoords() {\n        const shouldInvertAxis = this._shouldInvertAxis();\n        return this._getDirection() == 'rtl' && !this.vertical ? !shouldInvertAxis : shouldInvertAxis;\n    }\n    /** The language direction for this slider element. */\n    _getDirection() {\n        return this._dir && this._dir.value == 'rtl' ? 'rtl' : 'ltr';\n    }\n    constructor(elementRef, _focusMonitor, _changeDetectorRef, _dir, tabIndex, _ngZone, _document, _animationMode) {\n        super(elementRef);\n        this._focusMonitor = _focusMonitor;\n        this._changeDetectorRef = _changeDetectorRef;\n        this._dir = _dir;\n        this._ngZone = _ngZone;\n        this._animationMode = _animationMode;\n        this._invert = false;\n        this._max = 100;\n        this._min = 0;\n        this._step = 1;\n        this._thumbLabel = false;\n        this._tickInterval = 0;\n        this._value = null;\n        this._vertical = false;\n        /** Event emitted when the slider value has changed. */\n        this.change = new EventEmitter();\n        /** Event emitted when the slider thumb moves. */\n        this.input = new EventEmitter();\n        /**\n         * Emits when the raw value of the slider changes. This is here primarily\n         * to facilitate the two-way binding for the `value` input.\n         * @docs-private\n         */\n        this.valueChange = new EventEmitter();\n        /** onTouch function registered via registerOnTouch (ControlValueAccessor). */\n        this.onTouched = () => { };\n        this._percent = 0;\n        /**\n         * Whether or not the thumb is sliding and what the user is using to slide it with.\n         * Used to determine if there should be a transition for the thumb and fill track.\n         */\n        this._isSliding = null;\n        /**\n         * Whether or not the slider is active (clicked or sliding).\n         * Used to shrink and grow the thumb as according to the Material Design spec.\n         */\n        this._isActive = false;\n        /** The size of a tick interval as a percentage of the size of the track. */\n        this._tickIntervalPercent = 0;\n        /** The dimensions of the slider. */\n        this._sliderDimensions = null;\n        this._controlValueAccessorChangeFn = () => { };\n        /** Subscription to the Directionality change EventEmitter. */\n        this._dirChangeSubscription = Subscription.EMPTY;\n        /** Called when the user has put their pointer down on the slider. */\n        this._pointerDown = (event) => {\n            // Don't do anything if the slider is disabled or the\n            // user is using anything other than the main mouse button.\n            if (this.disabled || this._isSliding || (!isTouchEvent(event) && event.button !== 0)) {\n                return;\n            }\n            this._ngZone.run(() => {\n                this._touchId = isTouchEvent(event)\n                    ? getTouchIdForSlider(event, this._elementRef.nativeElement)\n                    : undefined;\n                const pointerPosition = getPointerPositionOnPage(event, this._touchId);\n                if (pointerPosition) {\n                    const oldValue = this.value;\n                    this._isSliding = 'pointer';\n                    this._lastPointerEvent = event;\n                    this._focusHostElement();\n                    this._onMouseenter(); // Simulate mouseenter in case this is a mobile device.\n                    this._bindGlobalEvents(event);\n                    this._focusHostElement();\n                    this._updateValueFromPosition(pointerPosition);\n                    this._valueOnSlideStart = oldValue;\n                    // Despite the fact that we explicitly bind active events, in some cases the browser\n                    // still dispatches non-cancelable events which cause this call to throw an error.\n                    // There doesn't appear to be a good way of avoiding them. See #23820.\n                    if (event.cancelable) {\n                        event.preventDefault();\n                    }\n                    // Emit a change and input event if the value changed.\n                    if (oldValue != this.value) {\n                        this._emitInputEvent();\n                    }\n                }\n            });\n        };\n        /**\n         * Called when the user has moved their pointer after\n         * starting to drag. Bound on the document level.\n         */\n        this._pointerMove = (event) => {\n            if (this._isSliding === 'pointer') {\n                const pointerPosition = getPointerPositionOnPage(event, this._touchId);\n                if (pointerPosition) {\n                    // Prevent the slide from selecting anything else.\n                    if (event.cancelable) {\n                        event.preventDefault();\n                    }\n                    const oldValue = this.value;\n                    this._lastPointerEvent = event;\n                    this._updateValueFromPosition(pointerPosition);\n                    // Native range elements always emit `input` events when the value changed while sliding.\n                    if (oldValue != this.value) {\n                        this._emitInputEvent();\n                    }\n                }\n            }\n        };\n        /** Called when the user has lifted their pointer. Bound on the document level. */\n        this._pointerUp = (event) => {\n            if (this._isSliding === 'pointer') {\n                if (!isTouchEvent(event) ||\n                    typeof this._touchId !== 'number' ||\n                    // Note that we use `changedTouches`, rather than `touches` because it\n                    // seems like in most cases `touches` is empty for `touchend` events.\n                    findMatchingTouch(event.changedTouches, this._touchId)) {\n                    if (event.cancelable) {\n                        event.preventDefault();\n                    }\n                    this._removeGlobalEvents();\n                    this._isSliding = null;\n                    this._touchId = undefined;\n                    if (this._valueOnSlideStart != this.value && !this.disabled) {\n                        this._emitChangeEvent();\n                    }\n                    this._valueOnSlideStart = this._lastPointerEvent = null;\n                }\n            }\n        };\n        /** Called when the window has lost focus. */\n        this._windowBlur = () => {\n            // If the window is blurred while dragging we need to stop dragging because the\n            // browser won't dispatch the `mouseup` and `touchend` events anymore.\n            if (this._lastPointerEvent) {\n                this._pointerUp(this._lastPointerEvent);\n            }\n        };\n        this._document = _document;\n        this.tabIndex = parseInt(tabIndex) || 0;\n        _ngZone.runOutsideAngular(() => {\n            const element = elementRef.nativeElement;\n            element.addEventListener('mousedown', this._pointerDown, activeEventOptions);\n            element.addEventListener('touchstart', this._pointerDown, activeEventOptions);\n        });\n    }\n    ngAfterViewInit() {\n        this._focusMonitor.monitor(this._elementRef, true).subscribe((origin) => {\n            this._isActive = !!origin && origin !== 'keyboard';\n            this._changeDetectorRef.detectChanges();\n        });\n        if (this._dir) {\n            this._dirChangeSubscription = this._dir.change.subscribe(() => {\n                this._changeDetectorRef.markForCheck();\n            });\n        }\n    }\n    ngOnDestroy() {\n        const element = this._elementRef.nativeElement;\n        element.removeEventListener('mousedown', this._pointerDown, activeEventOptions);\n        element.removeEventListener('touchstart', this._pointerDown, activeEventOptions);\n        this._lastPointerEvent = null;\n        this._removeGlobalEvents();\n        this._focusMonitor.stopMonitoring(this._elementRef);\n        this._dirChangeSubscription.unsubscribe();\n    }\n    _onMouseenter() {\n        if (this.disabled) {\n            return;\n        }\n        // We save the dimensions of the slider here so we can use them to update the spacing of the\n        // ticks and determine where on the slider click and slide events happen.\n        this._sliderDimensions = this._getSliderDimensions();\n        this._updateTickIntervalPercent();\n    }\n    _onFocus() {\n        // We save the dimensions of the slider here so we can use them to update the spacing of the\n        // ticks and determine where on the slider click and slide events happen.\n        this._sliderDimensions = this._getSliderDimensions();\n        this._updateTickIntervalPercent();\n    }\n    _onBlur() {\n        this.onTouched();\n    }\n    _onKeydown(event) {\n        if (this.disabled ||\n            hasModifierKey(event) ||\n            (this._isSliding && this._isSliding !== 'keyboard')) {\n            return;\n        }\n        const oldValue = this.value;\n        switch (event.keyCode) {\n            case PAGE_UP:\n                this._increment(10);\n                break;\n            case PAGE_DOWN:\n                this._increment(-10);\n                break;\n            case END:\n                this.value = this.max;\n                break;\n            case HOME:\n                this.value = this.min;\n                break;\n            case LEFT_ARROW:\n                // NOTE: For a sighted user it would make more sense that when they press an arrow key on an\n                // inverted slider the thumb moves in that direction. However for a blind user, nothing\n                // about the slider indicates that it is inverted. They will expect left to be decrement,\n                // regardless of how it appears on the screen. For speakers ofRTL languages, they probably\n                // expect left to mean increment. Therefore we flip the meaning of the side arrow keys for\n                // RTL. For inverted sliders we prefer a good a11y experience to having it \"look right\" for\n                // sighted users, therefore we do not swap the meaning.\n                this._increment(this._getDirection() == 'rtl' ? 1 : -1);\n                break;\n            case UP_ARROW:\n                this._increment(1);\n                break;\n            case RIGHT_ARROW:\n                // See comment on LEFT_ARROW about the conditions under which we flip the meaning.\n                this._increment(this._getDirection() == 'rtl' ? -1 : 1);\n                break;\n            case DOWN_ARROW:\n                this._increment(-1);\n                break;\n            default:\n                // Return if the key is not one that we explicitly handle to avoid calling preventDefault on\n                // it.\n                return;\n        }\n        if (oldValue != this.value) {\n            this._emitInputEvent();\n            this._emitChangeEvent();\n        }\n        this._isSliding = 'keyboard';\n        event.preventDefault();\n    }\n    _onKeyup() {\n        if (this._isSliding === 'keyboard') {\n            this._isSliding = null;\n        }\n    }\n    /** Use defaultView of injected document if available or fallback to global window reference */\n    _getWindow() {\n        return this._document.defaultView || window;\n    }\n    /**\n     * Binds our global move and end events. They're bound at the document level and only while\n     * dragging so that the user doesn't have to keep their pointer exactly over the slider\n     * as they're swiping across the screen.\n     */\n    _bindGlobalEvents(triggerEvent) {\n        // Note that we bind the events to the `document`, because it allows us to capture\n        // drag cancel events where the user's pointer is outside the browser window.\n        const document = this._document;\n        const isTouch = isTouchEvent(triggerEvent);\n        const moveEventName = isTouch ? 'touchmove' : 'mousemove';\n        const endEventName = isTouch ? 'touchend' : 'mouseup';\n        document.addEventListener(moveEventName, this._pointerMove, activeEventOptions);\n        document.addEventListener(endEventName, this._pointerUp, activeEventOptions);\n        if (isTouch) {\n            document.addEventListener('touchcancel', this._pointerUp, activeEventOptions);\n        }\n        const window = this._getWindow();\n        if (typeof window !== 'undefined' && window) {\n            window.addEventListener('blur', this._windowBlur);\n        }\n    }\n    /** Removes any global event listeners that we may have added. */\n    _removeGlobalEvents() {\n        const document = this._document;\n        document.removeEventListener('mousemove', this._pointerMove, activeEventOptions);\n        document.removeEventListener('mouseup', this._pointerUp, activeEventOptions);\n        document.removeEventListener('touchmove', this._pointerMove, activeEventOptions);\n        document.removeEventListener('touchend', this._pointerUp, activeEventOptions);\n        document.removeEventListener('touchcancel', this._pointerUp, activeEventOptions);\n        const window = this._getWindow();\n        if (typeof window !== 'undefined' && window) {\n            window.removeEventListener('blur', this._windowBlur);\n        }\n    }\n    /** Increments the slider by the given number of steps (negative number decrements). */\n    _increment(numSteps) {\n        // Pre-clamp the current value since it's allowed to be\n        // out of bounds when assigned programmatically.\n        const clampedValue = this._clamp(this.value || 0, this.min, this.max);\n        this.value = this._clamp(clampedValue + this.step * numSteps, this.min, this.max);\n    }\n    /** Calculate the new value from the new physical location. The value will always be snapped. */\n    _updateValueFromPosition(pos) {\n        if (!this._sliderDimensions) {\n            return;\n        }\n        let offset = this.vertical ? this._sliderDimensions.top : this._sliderDimensions.left;\n        let size = this.vertical ? this._sliderDimensions.height : this._sliderDimensions.width;\n        let posComponent = this.vertical ? pos.y : pos.x;\n        // The exact value is calculated from the event and used to find the closest snap value.\n        let percent = this._clamp((posComponent - offset) / size);\n        if (this._shouldInvertMouseCoords()) {\n            percent = 1 - percent;\n        }\n        // Since the steps may not divide cleanly into the max value, if the user\n        // slid to 0 or 100 percent, we jump to the min/max value. This approach\n        // is slightly more intuitive than using `Math.ceil` below, because it\n        // follows the user's pointer closer.\n        if (percent === 0) {\n            this.value = this.min;\n        }\n        else if (percent === 1) {\n            this.value = this.max;\n        }\n        else {\n            const exactValue = this._calculateValue(percent);\n            // This calculation finds the closest step by finding the closest\n            // whole number divisible by the step relative to the min.\n            const closestValue = Math.round((exactValue - this.min) / this.step) * this.step + this.min;\n            // The value needs to snap to the min and max.\n            this.value = this._clamp(closestValue, this.min, this.max);\n        }\n    }\n    /** Emits a change event if the current value is different from the last emitted value. */\n    _emitChangeEvent() {\n        this._controlValueAccessorChangeFn(this.value);\n        this.valueChange.emit(this.value);\n        this.change.emit(this._createChangeEvent());\n    }\n    /** Emits an input event when the current value is different from the last emitted value. */\n    _emitInputEvent() {\n        this.input.emit(this._createChangeEvent());\n    }\n    /** Updates the amount of space between ticks as a percentage of the width of the slider. */\n    _updateTickIntervalPercent() {\n        if (!this.tickInterval || !this._sliderDimensions) {\n            return;\n        }\n        let tickIntervalPercent;\n        if (this.tickInterval == 'auto') {\n            let trackSize = this.vertical ? this._sliderDimensions.height : this._sliderDimensions.width;\n            let pixelsPerStep = (trackSize * this.step) / (this.max - this.min);\n            let stepsPerTick = Math.ceil(MIN_AUTO_TICK_SEPARATION / pixelsPerStep);\n            let pixelsPerTick = stepsPerTick * this.step;\n            tickIntervalPercent = pixelsPerTick / trackSize;\n        }\n        else {\n            tickIntervalPercent = (this.tickInterval * this.step) / (this.max - this.min);\n        }\n        this._tickIntervalPercent = isSafeNumber(tickIntervalPercent) ? tickIntervalPercent : 0;\n    }\n    /** Creates a slider change object from the specified value. */\n    _createChangeEvent(value = this.value) {\n        let event = new MatLegacySliderChange();\n        event.source = this;\n        event.value = value;\n        return event;\n    }\n    /** Calculates the percentage of the slider that a value is. */\n    _calculatePercentage(value) {\n        const percentage = ((value || 0) - this.min) / (this.max - this.min);\n        return isSafeNumber(percentage) ? percentage : 0;\n    }\n    /** Calculates the value a percentage of the slider corresponds to. */\n    _calculateValue(percentage) {\n        return this.min + percentage * (this.max - this.min);\n    }\n    /** Return a number between two numbers. */\n    _clamp(value, min = 0, max = 1) {\n        return Math.max(min, Math.min(value, max));\n    }\n    /**\n     * Get the bounding client rect of the slider track element.\n     * The track is used rather than the native element to ignore the extra space that the thumb can\n     * take up.\n     */\n    _getSliderDimensions() {\n        return this._sliderWrapper ? this._sliderWrapper.nativeElement.getBoundingClientRect() : null;\n    }\n    /**\n     * Focuses the native element.\n     * Currently only used to allow a blur event to fire but will be used with keyboard input later.\n     */\n    _focusHostElement(options) {\n        this._elementRef.nativeElement.focus(options);\n    }\n    /** Blurs the native element. */\n    _blurHostElement() {\n        this._elementRef.nativeElement.blur();\n    }\n    /**\n     * Sets the model value. Implemented as part of ControlValueAccessor.\n     * @param value\n     */\n    writeValue(value) {\n        this.value = value;\n    }\n    /**\n     * Registers a callback to be triggered when the value has changed.\n     * Implemented as part of ControlValueAccessor.\n     * @param fn Callback to be registered.\n     */\n    registerOnChange(fn) {\n        this._controlValueAccessorChangeFn = fn;\n    }\n    /**\n     * Registers a callback to be triggered when the component is touched.\n     * Implemented as part of ControlValueAccessor.\n     * @param fn Callback to be registered.\n     */\n    registerOnTouched(fn) {\n        this.onTouched = fn;\n    }\n    /**\n     * Sets whether the component should be disabled.\n     * Implemented as part of ControlValueAccessor.\n     * @param isDisabled\n     */\n    setDisabledState(isDisabled) {\n        this.disabled = isDisabled;\n    }\n}\nMatLegacySlider.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatLegacySlider, deps: [{ token: i0.ElementRef }, { token: i1.FocusMonitor }, { token: i0.ChangeDetectorRef }, { token: i2.Directionality, optional: true }, { token: 'tabindex', attribute: true }, { token: i0.NgZone }, { token: DOCUMENT }, { token: ANIMATION_MODULE_TYPE, optional: true }], target: i0.ɵɵFactoryTarget.Component });\nMatLegacySlider.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", type: MatLegacySlider, selector: \"mat-slider\", inputs: { disabled: \"disabled\", color: \"color\", tabIndex: \"tabIndex\", invert: \"invert\", max: \"max\", min: \"min\", step: \"step\", thumbLabel: \"thumbLabel\", tickInterval: \"tickInterval\", value: \"value\", displayWith: \"displayWith\", valueText: \"valueText\", vertical: \"vertical\" }, outputs: { change: \"change\", input: \"input\", valueChange: \"valueChange\" }, host: { attributes: { \"role\": \"slider\" }, listeners: { \"focus\": \"_onFocus()\", \"blur\": \"_onBlur()\", \"keydown\": \"_onKeydown($event)\", \"keyup\": \"_onKeyup()\", \"mouseenter\": \"_onMouseenter()\", \"selectstart\": \"$event.preventDefault()\" }, properties: { \"tabIndex\": \"tabIndex\", \"attr.aria-disabled\": \"disabled\", \"attr.aria-valuemax\": \"max\", \"attr.aria-valuemin\": \"min\", \"attr.aria-valuenow\": \"value\", \"attr.aria-valuetext\": \"valueText == null ? displayValue : valueText\", \"attr.aria-orientation\": \"vertical ? \\\"vertical\\\" : \\\"horizontal\\\"\", \"class.mat-slider-disabled\": \"disabled\", \"class.mat-slider-has-ticks\": \"tickInterval\", \"class.mat-slider-horizontal\": \"!vertical\", \"class.mat-slider-axis-inverted\": \"_shouldInvertAxis()\", \"class.mat-slider-invert-mouse-coords\": \"_shouldInvertMouseCoords()\", \"class.mat-slider-sliding\": \"_isSliding\", \"class.mat-slider-thumb-label-showing\": \"thumbLabel\", \"class.mat-slider-vertical\": \"vertical\", \"class.mat-slider-min-value\": \"_isMinValue()\", \"class.mat-slider-hide-last-tick\": \"disabled || _isMinValue() && _getThumbGap() && _shouldInvertAxis()\", \"class._mat-animation-noopable\": \"_animationMode === \\\"NoopAnimations\\\"\" }, classAttribute: \"mat-slider mat-focus-indicator\" }, providers: [MAT_LEGACY_SLIDER_VALUE_ACCESSOR], viewQueries: [{ propertyName: \"_sliderWrapper\", first: true, predicate: [\"sliderWrapper\"], descendants: true }], exportAs: [\"matSlider\"], usesInheritance: true, ngImport: i0, template: \"<div class=\\\"mat-slider-wrapper\\\" #sliderWrapper>\\n  <div class=\\\"mat-slider-track-wrapper\\\">\\n    <div class=\\\"mat-slider-track-background\\\" [ngStyle]=\\\"_getTrackBackgroundStyles()\\\"></div>\\n    <div class=\\\"mat-slider-track-fill\\\" [ngStyle]=\\\"_getTrackFillStyles()\\\"></div>\\n  </div>\\n  <div class=\\\"mat-slider-ticks-container\\\" [ngStyle]=\\\"_getTicksContainerStyles()\\\">\\n    <div class=\\\"mat-slider-ticks\\\" [ngStyle]=\\\"_getTicksStyles()\\\"></div>\\n  </div>\\n  <div class=\\\"mat-slider-thumb-container\\\" [ngStyle]=\\\"_getThumbContainerStyles()\\\">\\n    <div class=\\\"mat-slider-focus-ring\\\"></div>\\n    <div class=\\\"mat-slider-thumb\\\"></div>\\n    <div class=\\\"mat-slider-thumb-label\\\">\\n      <span class=\\\"mat-slider-thumb-label-text\\\">{{displayValue}}</span>\\n    </div>\\n  </div>\\n</div>\\n\", styles: [\".mat-slider{display:inline-block;position:relative;box-sizing:border-box;padding:8px;outline:none;vertical-align:middle}.mat-slider:not(.mat-slider-disabled):active,.mat-slider.mat-slider-sliding:not(.mat-slider-disabled){cursor:grabbing}.mat-slider-wrapper{-webkit-print-color-adjust:exact;color-adjust:exact;position:absolute}.mat-slider-track-wrapper{position:absolute;top:0;left:0;overflow:hidden}.mat-slider-track-fill{position:absolute;transform-origin:0 0;transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1),background-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-track-background{position:absolute;transform-origin:100% 100%;transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1),background-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-ticks-container{position:absolute;left:0;top:0;overflow:hidden}.mat-slider-ticks{-webkit-background-clip:content-box;background-clip:content-box;background-repeat:repeat;box-sizing:border-box;opacity:0;transition:opacity 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-thumb-container{position:absolute;z-index:1;transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-focus-ring{position:absolute;width:30px;height:30px;border-radius:50%;transform:scale(0);opacity:0;transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1),background-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1),opacity 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider.cdk-keyboard-focused .mat-slider-focus-ring,.mat-slider.cdk-program-focused .mat-slider-focus-ring{transform:scale(1);opacity:1}.mat-slider:not(.mat-slider-disabled):not(.mat-slider-sliding) .mat-slider-thumb-label,.mat-slider:not(.mat-slider-disabled):not(.mat-slider-sliding) .mat-slider-thumb{cursor:grab}.mat-slider-thumb{position:absolute;right:-10px;bottom:-10px;box-sizing:border-box;width:20px;height:20px;border:3px solid rgba(0,0,0,0);border-radius:50%;transform:scale(0.7);transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1),background-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1),border-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-thumb-label{display:none;align-items:center;justify-content:center;position:absolute;width:28px;height:28px;border-radius:50%;transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1),border-radius 400ms cubic-bezier(0.25, 0.8, 0.25, 1),background-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.cdk-high-contrast-active .mat-slider-thumb-label{outline:solid 1px}.mat-slider-thumb-label-text{z-index:1;opacity:0;transition:opacity 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-sliding .mat-slider-track-fill,.mat-slider-sliding .mat-slider-track-background,.mat-slider-sliding .mat-slider-thumb-container{transition-duration:0ms}.mat-slider-has-ticks .mat-slider-wrapper::after{content:\\\"\\\";position:absolute;border-width:0;border-style:solid;opacity:0;transition:opacity 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-has-ticks.cdk-focused:not(.mat-slider-hide-last-tick) .mat-slider-wrapper::after,.mat-slider-has-ticks:hover:not(.mat-slider-hide-last-tick) .mat-slider-wrapper::after{opacity:1}.mat-slider-has-ticks.cdk-focused:not(.mat-slider-disabled) .mat-slider-ticks,.mat-slider-has-ticks:hover:not(.mat-slider-disabled) .mat-slider-ticks{opacity:1}.mat-slider-thumb-label-showing .mat-slider-focus-ring{display:none}.mat-slider-thumb-label-showing .mat-slider-thumb-label{display:flex}.mat-slider-axis-inverted .mat-slider-track-fill{transform-origin:100% 100%}.mat-slider-axis-inverted .mat-slider-track-background{transform-origin:0 0}.mat-slider:not(.mat-slider-disabled).cdk-focused.mat-slider-thumb-label-showing .mat-slider-thumb{transform:scale(0)}.mat-slider:not(.mat-slider-disabled).cdk-focused .mat-slider-thumb-label{border-radius:50% 50% 0}.mat-slider:not(.mat-slider-disabled).cdk-focused .mat-slider-thumb-label-text{opacity:1}.mat-slider:not(.mat-slider-disabled).cdk-mouse-focused .mat-slider-thumb,.mat-slider:not(.mat-slider-disabled).cdk-touch-focused .mat-slider-thumb,.mat-slider:not(.mat-slider-disabled).cdk-program-focused .mat-slider-thumb{border-width:2px;transform:scale(1)}.mat-slider-disabled .mat-slider-focus-ring{transform:scale(0);opacity:0}.mat-slider-disabled .mat-slider-thumb{border-width:4px;transform:scale(0.5)}.mat-slider-disabled .mat-slider-thumb-label{display:none}.mat-slider-horizontal{height:48px;min-width:128px}.mat-slider-horizontal .mat-slider-wrapper{height:2px;top:23px;left:8px;right:8px}.mat-slider-horizontal .mat-slider-wrapper::after{height:2px;border-left-width:2px;right:0;top:0}.mat-slider-horizontal .mat-slider-track-wrapper{height:2px;width:100%}.mat-slider-horizontal .mat-slider-track-fill{height:2px;width:100%;transform:scaleX(0)}.mat-slider-horizontal .mat-slider-track-background{height:2px;width:100%;transform:scaleX(1)}.mat-slider-horizontal .mat-slider-ticks-container{height:2px;width:100%}.cdk-high-contrast-active .mat-slider-horizontal .mat-slider-ticks-container{height:0;outline:solid 2px;top:1px}.mat-slider-horizontal .mat-slider-ticks{height:2px;width:100%}.mat-slider-horizontal .mat-slider-thumb-container{width:100%;height:0;top:50%}.mat-slider-horizontal .mat-slider-focus-ring{top:-15px;right:-15px}.mat-slider-horizontal .mat-slider-thumb-label{right:-14px;top:-40px;transform:translateY(26px) scale(0.01) rotate(45deg)}.mat-slider-horizontal .mat-slider-thumb-label-text{transform:rotate(-45deg)}.mat-slider-horizontal.cdk-focused .mat-slider-thumb-label{transform:rotate(45deg)}.cdk-high-contrast-active .mat-slider-horizontal.cdk-focused .mat-slider-thumb-label,.cdk-high-contrast-active .mat-slider-horizontal.cdk-focused .mat-slider-thumb-label-text{transform:none}.mat-slider-vertical{width:48px;min-height:128px}.mat-slider-vertical .mat-slider-wrapper{width:2px;top:8px;bottom:8px;left:23px}.mat-slider-vertical .mat-slider-wrapper::after{width:2px;border-top-width:2px;bottom:0;left:0}.mat-slider-vertical .mat-slider-track-wrapper{height:100%;width:2px}.mat-slider-vertical .mat-slider-track-fill{height:100%;width:2px;transform:scaleY(0)}.mat-slider-vertical .mat-slider-track-background{height:100%;width:2px;transform:scaleY(1)}.mat-slider-vertical .mat-slider-ticks-container{width:2px;height:100%}.cdk-high-contrast-active .mat-slider-vertical .mat-slider-ticks-container{width:0;outline:solid 2px;left:1px}.mat-slider-vertical .mat-slider-focus-ring{bottom:-15px;left:-15px}.mat-slider-vertical .mat-slider-ticks{width:2px;height:100%}.mat-slider-vertical .mat-slider-thumb-container{height:100%;width:0;left:50%}.mat-slider-vertical .mat-slider-thumb{-webkit-backface-visibility:hidden;backface-visibility:hidden}.mat-slider-vertical .mat-slider-thumb-label{bottom:-14px;left:-40px;transform:translateX(26px) scale(0.01) rotate(-45deg)}.mat-slider-vertical .mat-slider-thumb-label-text{transform:rotate(45deg)}.mat-slider-vertical.cdk-focused .mat-slider-thumb-label{transform:rotate(-45deg)}[dir=rtl] .mat-slider-wrapper::after{left:0;right:auto}[dir=rtl] .mat-slider-horizontal .mat-slider-track-fill{transform-origin:100% 100%}[dir=rtl] .mat-slider-horizontal .mat-slider-track-background{transform-origin:0 0}[dir=rtl] .mat-slider-horizontal.mat-slider-axis-inverted .mat-slider-track-fill{transform-origin:0 0}[dir=rtl] .mat-slider-horizontal.mat-slider-axis-inverted .mat-slider-track-background{transform-origin:100% 100%}.mat-slider._mat-animation-noopable .mat-slider-track-fill,.mat-slider._mat-animation-noopable .mat-slider-track-background,.mat-slider._mat-animation-noopable .mat-slider-ticks,.mat-slider._mat-animation-noopable .mat-slider-thumb-container,.mat-slider._mat-animation-noopable .mat-slider-focus-ring,.mat-slider._mat-animation-noopable .mat-slider-thumb,.mat-slider._mat-animation-noopable .mat-slider-thumb-label,.mat-slider._mat-animation-noopable .mat-slider-thumb-label-text,.mat-slider._mat-animation-noopable .mat-slider-has-ticks .mat-slider-wrapper::after{transition:none}\"], dependencies: [{ kind: \"directive\", type: i3.NgStyle, selector: \"[ngStyle]\", inputs: [\"ngStyle\"] }], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatLegacySlider, decorators: [{\n            type: Component,\n            args: [{ selector: 'mat-slider', exportAs: 'matSlider', providers: [MAT_LEGACY_SLIDER_VALUE_ACCESSOR], host: {\n                        '(focus)': '_onFocus()',\n                        '(blur)': '_onBlur()',\n                        '(keydown)': '_onKeydown($event)',\n                        '(keyup)': '_onKeyup()',\n                        '(mouseenter)': '_onMouseenter()',\n                        // On Safari starting to slide temporarily triggers text selection mode which\n                        // show the wrong cursor. We prevent it by stopping the `selectstart` event.\n                        '(selectstart)': '$event.preventDefault()',\n                        'class': 'mat-slider mat-focus-indicator',\n                        'role': 'slider',\n                        '[tabIndex]': 'tabIndex',\n                        '[attr.aria-disabled]': 'disabled',\n                        '[attr.aria-valuemax]': 'max',\n                        '[attr.aria-valuemin]': 'min',\n                        '[attr.aria-valuenow]': 'value',\n                        // NVDA and Jaws appear to announce the `aria-valuenow` by calculating its percentage based\n                        // on its value between `aria-valuemin` and `aria-valuemax`. Due to how decimals are handled,\n                        // it can cause the slider to read out a very long value like 0.20000068 if the current value\n                        // is 0.2 with a min of 0 and max of 1. We work around the issue by setting `aria-valuetext`\n                        // to the same value that we set on the slider's thumb which will be truncated.\n                        '[attr.aria-valuetext]': 'valueText == null ? displayValue : valueText',\n                        '[attr.aria-orientation]': 'vertical ? \"vertical\" : \"horizontal\"',\n                        '[class.mat-slider-disabled]': 'disabled',\n                        '[class.mat-slider-has-ticks]': 'tickInterval',\n                        '[class.mat-slider-horizontal]': '!vertical',\n                        '[class.mat-slider-axis-inverted]': '_shouldInvertAxis()',\n                        // Class binding which is only used by the test harness as there is no other\n                        // way for the harness to detect if mouse coordinates need to be inverted.\n                        '[class.mat-slider-invert-mouse-coords]': '_shouldInvertMouseCoords()',\n                        '[class.mat-slider-sliding]': '_isSliding',\n                        '[class.mat-slider-thumb-label-showing]': 'thumbLabel',\n                        '[class.mat-slider-vertical]': 'vertical',\n                        '[class.mat-slider-min-value]': '_isMinValue()',\n                        '[class.mat-slider-hide-last-tick]': 'disabled || _isMinValue() && _getThumbGap() && _shouldInvertAxis()',\n                        '[class._mat-animation-noopable]': '_animationMode === \"NoopAnimations\"',\n                    }, inputs: ['disabled', 'color', 'tabIndex'], encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.OnPush, template: \"<div class=\\\"mat-slider-wrapper\\\" #sliderWrapper>\\n  <div class=\\\"mat-slider-track-wrapper\\\">\\n    <div class=\\\"mat-slider-track-background\\\" [ngStyle]=\\\"_getTrackBackgroundStyles()\\\"></div>\\n    <div class=\\\"mat-slider-track-fill\\\" [ngStyle]=\\\"_getTrackFillStyles()\\\"></div>\\n  </div>\\n  <div class=\\\"mat-slider-ticks-container\\\" [ngStyle]=\\\"_getTicksContainerStyles()\\\">\\n    <div class=\\\"mat-slider-ticks\\\" [ngStyle]=\\\"_getTicksStyles()\\\"></div>\\n  </div>\\n  <div class=\\\"mat-slider-thumb-container\\\" [ngStyle]=\\\"_getThumbContainerStyles()\\\">\\n    <div class=\\\"mat-slider-focus-ring\\\"></div>\\n    <div class=\\\"mat-slider-thumb\\\"></div>\\n    <div class=\\\"mat-slider-thumb-label\\\">\\n      <span class=\\\"mat-slider-thumb-label-text\\\">{{displayValue}}</span>\\n    </div>\\n  </div>\\n</div>\\n\", styles: [\".mat-slider{display:inline-block;position:relative;box-sizing:border-box;padding:8px;outline:none;vertical-align:middle}.mat-slider:not(.mat-slider-disabled):active,.mat-slider.mat-slider-sliding:not(.mat-slider-disabled){cursor:grabbing}.mat-slider-wrapper{-webkit-print-color-adjust:exact;color-adjust:exact;position:absolute}.mat-slider-track-wrapper{position:absolute;top:0;left:0;overflow:hidden}.mat-slider-track-fill{position:absolute;transform-origin:0 0;transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1),background-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-track-background{position:absolute;transform-origin:100% 100%;transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1),background-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-ticks-container{position:absolute;left:0;top:0;overflow:hidden}.mat-slider-ticks{-webkit-background-clip:content-box;background-clip:content-box;background-repeat:repeat;box-sizing:border-box;opacity:0;transition:opacity 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-thumb-container{position:absolute;z-index:1;transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-focus-ring{position:absolute;width:30px;height:30px;border-radius:50%;transform:scale(0);opacity:0;transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1),background-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1),opacity 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider.cdk-keyboard-focused .mat-slider-focus-ring,.mat-slider.cdk-program-focused .mat-slider-focus-ring{transform:scale(1);opacity:1}.mat-slider:not(.mat-slider-disabled):not(.mat-slider-sliding) .mat-slider-thumb-label,.mat-slider:not(.mat-slider-disabled):not(.mat-slider-sliding) .mat-slider-thumb{cursor:grab}.mat-slider-thumb{position:absolute;right:-10px;bottom:-10px;box-sizing:border-box;width:20px;height:20px;border:3px solid rgba(0,0,0,0);border-radius:50%;transform:scale(0.7);transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1),background-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1),border-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-thumb-label{display:none;align-items:center;justify-content:center;position:absolute;width:28px;height:28px;border-radius:50%;transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1),border-radius 400ms cubic-bezier(0.25, 0.8, 0.25, 1),background-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.cdk-high-contrast-active .mat-slider-thumb-label{outline:solid 1px}.mat-slider-thumb-label-text{z-index:1;opacity:0;transition:opacity 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-sliding .mat-slider-track-fill,.mat-slider-sliding .mat-slider-track-background,.mat-slider-sliding .mat-slider-thumb-container{transition-duration:0ms}.mat-slider-has-ticks .mat-slider-wrapper::after{content:\\\"\\\";position:absolute;border-width:0;border-style:solid;opacity:0;transition:opacity 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-has-ticks.cdk-focused:not(.mat-slider-hide-last-tick) .mat-slider-wrapper::after,.mat-slider-has-ticks:hover:not(.mat-slider-hide-last-tick) .mat-slider-wrapper::after{opacity:1}.mat-slider-has-ticks.cdk-focused:not(.mat-slider-disabled) .mat-slider-ticks,.mat-slider-has-ticks:hover:not(.mat-slider-disabled) .mat-slider-ticks{opacity:1}.mat-slider-thumb-label-showing .mat-slider-focus-ring{display:none}.mat-slider-thumb-label-showing .mat-slider-thumb-label{display:flex}.mat-slider-axis-inverted .mat-slider-track-fill{transform-origin:100% 100%}.mat-slider-axis-inverted .mat-slider-track-background{transform-origin:0 0}.mat-slider:not(.mat-slider-disabled).cdk-focused.mat-slider-thumb-label-showing .mat-slider-thumb{transform:scale(0)}.mat-slider:not(.mat-slider-disabled).cdk-focused .mat-slider-thumb-label{border-radius:50% 50% 0}.mat-slider:not(.mat-slider-disabled).cdk-focused .mat-slider-thumb-label-text{opacity:1}.mat-slider:not(.mat-slider-disabled).cdk-mouse-focused .mat-slider-thumb,.mat-slider:not(.mat-slider-disabled).cdk-touch-focused .mat-slider-thumb,.mat-slider:not(.mat-slider-disabled).cdk-program-focused .mat-slider-thumb{border-width:2px;transform:scale(1)}.mat-slider-disabled .mat-slider-focus-ring{transform:scale(0);opacity:0}.mat-slider-disabled .mat-slider-thumb{border-width:4px;transform:scale(0.5)}.mat-slider-disabled .mat-slider-thumb-label{display:none}.mat-slider-horizontal{height:48px;min-width:128px}.mat-slider-horizontal .mat-slider-wrapper{height:2px;top:23px;left:8px;right:8px}.mat-slider-horizontal .mat-slider-wrapper::after{height:2px;border-left-width:2px;right:0;top:0}.mat-slider-horizontal .mat-slider-track-wrapper{height:2px;width:100%}.mat-slider-horizontal .mat-slider-track-fill{height:2px;width:100%;transform:scaleX(0)}.mat-slider-horizontal .mat-slider-track-background{height:2px;width:100%;transform:scaleX(1)}.mat-slider-horizontal .mat-slider-ticks-container{height:2px;width:100%}.cdk-high-contrast-active .mat-slider-horizontal .mat-slider-ticks-container{height:0;outline:solid 2px;top:1px}.mat-slider-horizontal .mat-slider-ticks{height:2px;width:100%}.mat-slider-horizontal .mat-slider-thumb-container{width:100%;height:0;top:50%}.mat-slider-horizontal .mat-slider-focus-ring{top:-15px;right:-15px}.mat-slider-horizontal .mat-slider-thumb-label{right:-14px;top:-40px;transform:translateY(26px) scale(0.01) rotate(45deg)}.mat-slider-horizontal .mat-slider-thumb-label-text{transform:rotate(-45deg)}.mat-slider-horizontal.cdk-focused .mat-slider-thumb-label{transform:rotate(45deg)}.cdk-high-contrast-active .mat-slider-horizontal.cdk-focused .mat-slider-thumb-label,.cdk-high-contrast-active .mat-slider-horizontal.cdk-focused .mat-slider-thumb-label-text{transform:none}.mat-slider-vertical{width:48px;min-height:128px}.mat-slider-vertical .mat-slider-wrapper{width:2px;top:8px;bottom:8px;left:23px}.mat-slider-vertical .mat-slider-wrapper::after{width:2px;border-top-width:2px;bottom:0;left:0}.mat-slider-vertical .mat-slider-track-wrapper{height:100%;width:2px}.mat-slider-vertical .mat-slider-track-fill{height:100%;width:2px;transform:scaleY(0)}.mat-slider-vertical .mat-slider-track-background{height:100%;width:2px;transform:scaleY(1)}.mat-slider-vertical .mat-slider-ticks-container{width:2px;height:100%}.cdk-high-contrast-active .mat-slider-vertical .mat-slider-ticks-container{width:0;outline:solid 2px;left:1px}.mat-slider-vertical .mat-slider-focus-ring{bottom:-15px;left:-15px}.mat-slider-vertical .mat-slider-ticks{width:2px;height:100%}.mat-slider-vertical .mat-slider-thumb-container{height:100%;width:0;left:50%}.mat-slider-vertical .mat-slider-thumb{-webkit-backface-visibility:hidden;backface-visibility:hidden}.mat-slider-vertical .mat-slider-thumb-label{bottom:-14px;left:-40px;transform:translateX(26px) scale(0.01) rotate(-45deg)}.mat-slider-vertical .mat-slider-thumb-label-text{transform:rotate(45deg)}.mat-slider-vertical.cdk-focused .mat-slider-thumb-label{transform:rotate(-45deg)}[dir=rtl] .mat-slider-wrapper::after{left:0;right:auto}[dir=rtl] .mat-slider-horizontal .mat-slider-track-fill{transform-origin:100% 100%}[dir=rtl] .mat-slider-horizontal .mat-slider-track-background{transform-origin:0 0}[dir=rtl] .mat-slider-horizontal.mat-slider-axis-inverted .mat-slider-track-fill{transform-origin:0 0}[dir=rtl] .mat-slider-horizontal.mat-slider-axis-inverted .mat-slider-track-background{transform-origin:100% 100%}.mat-slider._mat-animation-noopable .mat-slider-track-fill,.mat-slider._mat-animation-noopable .mat-slider-track-background,.mat-slider._mat-animation-noopable .mat-slider-ticks,.mat-slider._mat-animation-noopable .mat-slider-thumb-container,.mat-slider._mat-animation-noopable .mat-slider-focus-ring,.mat-slider._mat-animation-noopable .mat-slider-thumb,.mat-slider._mat-animation-noopable .mat-slider-thumb-label,.mat-slider._mat-animation-noopable .mat-slider-thumb-label-text,.mat-slider._mat-animation-noopable .mat-slider-has-ticks .mat-slider-wrapper::after{transition:none}\"] }]\n        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i1.FocusMonitor }, { type: i0.ChangeDetectorRef }, { type: i2.Directionality, decorators: [{\n                    type: Optional\n                }] }, { type: undefined, decorators: [{\n                    type: Attribute,\n                    args: ['tabindex']\n                }] }, { type: i0.NgZone }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [ANIMATION_MODULE_TYPE]\n                }] }]; }, propDecorators: { invert: [{\n                type: Input\n            }], max: [{\n                type: Input\n            }], min: [{\n                type: Input\n            }], step: [{\n                type: Input\n            }], thumbLabel: [{\n                type: Input\n            }], tickInterval: [{\n                type: Input\n            }], value: [{\n                type: Input\n            }], displayWith: [{\n                type: Input\n            }], valueText: [{\n                type: Input\n            }], vertical: [{\n                type: Input\n            }], change: [{\n                type: Output\n            }], input: [{\n                type: Output\n            }], valueChange: [{\n                type: Output\n            }], _sliderWrapper: [{\n                type: ViewChild,\n                args: ['sliderWrapper']\n            }] } });\n/** Checks if number is safe for calculation */\nfunction isSafeNumber(value) {\n    return !isNaN(value) && isFinite(value);\n}\n/** Returns whether an event is a touch event. */\nfunction isTouchEvent(event) {\n    // This function is called for every pixel that the user has dragged so we need it to be\n    // as fast as possible. Since we only bind mouse events and touch events, we can assume\n    // that if the event's name starts with `t`, it's a touch event.\n    return event.type[0] === 't';\n}\n/** Gets the coordinates of a touch or mouse event relative to the viewport. */\nfunction getPointerPositionOnPage(event, id) {\n    let point;\n    if (isTouchEvent(event)) {\n        // The `identifier` could be undefined if the browser doesn't support `TouchEvent.identifier`.\n        // If that's the case, attribute the first touch to all active sliders. This should still cover\n        // the most common case while only breaking multi-touch.\n        if (typeof id === 'number') {\n            point = findMatchingTouch(event.touches, id) || findMatchingTouch(event.changedTouches, id);\n        }\n        else {\n            // `touches` will be empty for start/end events so we have to fall back to `changedTouches`.\n            point = event.touches[0] || event.changedTouches[0];\n        }\n    }\n    else {\n        point = event;\n    }\n    return point ? { x: point.clientX, y: point.clientY } : undefined;\n}\n/** Finds a `Touch` with a specific ID in a `TouchList`. */\nfunction findMatchingTouch(touches, id) {\n    for (let i = 0; i < touches.length; i++) {\n        if (touches[i].identifier === id) {\n            return touches[i];\n        }\n    }\n    return undefined;\n}\n/** Gets the unique ID of a touch that matches a specific slider. */\nfunction getTouchIdForSlider(event, sliderHost) {\n    for (let i = 0; i < event.touches.length; i++) {\n        const target = event.touches[i].target;\n        if (sliderHost === target || sliderHost.contains(target)) {\n            return event.touches[i].identifier;\n        }\n    }\n    return undefined;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * @deprecated Use `MatSliderModule` from `@angular/material/slider` instead. See https://material.angular.io/guide/mdc-migration for information about migrating.\n * @breaking-change 17.0.0\n */\nclass MatLegacySliderModule {\n}\nMatLegacySliderModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatLegacySliderModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nMatLegacySliderModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatLegacySliderModule, declarations: [MatLegacySlider], imports: [CommonModule, MatCommonModule], exports: [MatLegacySlider, MatCommonModule] });\nMatLegacySliderModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatLegacySliderModule, imports: [CommonModule, MatCommonModule, MatCommonModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.0-rc.0\", ngImport: i0, type: MatLegacySliderModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    imports: [CommonModule, MatCommonModule],\n                    exports: [MatLegacySlider, MatCommonModule],\n                    declarations: [MatLegacySlider],\n                }]\n        }] });\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { MAT_LEGACY_SLIDER_VALUE_ACCESSOR, MatLegacySlider, MatLegacySliderChange, MatLegacySliderModule };\n","/**\n * @license Angular v15.2.9\n * (c) 2010-2022 Google LLC. https://angular.io/\n * License: MIT\n */\n\n/**\n * An injectable service that produces an animation sequence programmatically within an\n * Angular component or directive.\n * Provided by the `BrowserAnimationsModule` or `NoopAnimationsModule`.\n *\n * @usageNotes\n *\n * To use this service, add it to your component or directive as a dependency.\n * The service is instantiated along with your component.\n *\n * Apps do not typically need to create their own animation players, but if you\n * do need to, follow these steps:\n *\n * 1. Use the <code>[AnimationBuilder.build](api/animations/AnimationBuilder#build)()</code> method\n * to create a programmatic animation. The method returns an `AnimationFactory` instance.\n *\n * 2. Use the factory object to create an `AnimationPlayer` and attach it to a DOM element.\n *\n * 3. Use the player object to control the animation programmatically.\n *\n * For example:\n *\n * ```ts\n * // import the service from BrowserAnimationsModule\n * import {AnimationBuilder} from '@angular/animations';\n * // require the service as a dependency\n * class MyCmp {\n *   constructor(private _builder: AnimationBuilder) {}\n *\n *   makeAnimation(element: any) {\n *     // first define a reusable animation\n *     const myAnimation = this._builder.build([\n *       style({ width: 0 }),\n *       animate(1000, style({ width: '100px' }))\n *     ]);\n *\n *     // use the returned factory object to create a player\n *     const player = myAnimation.create(element);\n *\n *     player.play();\n *   }\n * }\n * ```\n *\n * @publicApi\n */\nclass AnimationBuilder {\n}\n/**\n * A factory object returned from the\n * <code>[AnimationBuilder.build](api/animations/AnimationBuilder#build)()</code>\n * method.\n *\n * @publicApi\n */\nclass AnimationFactory {\n}\n\n/**\n * Specifies automatic styling.\n *\n * @publicApi\n */\nconst AUTO_STYLE = '*';\n/**\n * Creates a named animation trigger, containing a  list of [`state()`](api/animations/state)\n * and `transition()` entries to be evaluated when the expression\n * bound to the trigger changes.\n *\n * @param name An identifying string.\n * @param definitions  An animation definition object, containing an array of\n * [`state()`](api/animations/state) and `transition()` declarations.\n *\n * @return An object that encapsulates the trigger data.\n *\n * @usageNotes\n * Define an animation trigger in the `animations` section of `@Component` metadata.\n * In the template, reference the trigger by name and bind it to a trigger expression that\n * evaluates to a defined animation state, using the following format:\n *\n * `[@triggerName]=\"expression\"`\n *\n * Animation trigger bindings convert all values to strings, and then match the\n * previous and current values against any linked transitions.\n * Booleans can be specified as `1` or `true` and `0` or `false`.\n *\n * ### Usage Example\n *\n * The following example creates an animation trigger reference based on the provided\n * name value.\n * The provided animation value is expected to be an array consisting of state and\n * transition declarations.\n *\n * ```typescript\n * @Component({\n *   selector: \"my-component\",\n *   templateUrl: \"my-component-tpl.html\",\n *   animations: [\n *     trigger(\"myAnimationTrigger\", [\n *       state(...),\n *       state(...),\n *       transition(...),\n *       transition(...)\n *     ])\n *   ]\n * })\n * class MyComponent {\n *   myStatusExp = \"something\";\n * }\n * ```\n *\n * The template associated with this component makes use of the defined trigger\n * by binding to an element within its template code.\n *\n * ```html\n * <!-- somewhere inside of my-component-tpl.html -->\n * <div [@myAnimationTrigger]=\"myStatusExp\">...</div>\n * ```\n *\n * ### Using an inline function\n * The `transition` animation method also supports reading an inline function which can decide\n * if its associated animation should be run.\n *\n * ```typescript\n * // this method is run each time the `myAnimationTrigger` trigger value changes.\n * function myInlineMatcherFn(fromState: string, toState: string, element: any, params: {[key:\n string]: any}): boolean {\n *   // notice that `element` and `params` are also available here\n *   return toState == 'yes-please-animate';\n * }\n *\n * @Component({\n *   selector: 'my-component',\n *   templateUrl: 'my-component-tpl.html',\n *   animations: [\n *     trigger('myAnimationTrigger', [\n *       transition(myInlineMatcherFn, [\n *         // the animation sequence code\n *       ]),\n *     ])\n *   ]\n * })\n * class MyComponent {\n *   myStatusExp = \"yes-please-animate\";\n * }\n * ```\n *\n * ### Disabling Animations\n * When true, the special animation control binding `@.disabled` binding prevents\n * all animations from rendering.\n * Place the  `@.disabled` binding on an element to disable\n * animations on the element itself, as well as any inner animation triggers\n * within the element.\n *\n * The following example shows how to use this feature:\n *\n * ```typescript\n * @Component({\n *   selector: 'my-component',\n *   template: `\n *     <div [@.disabled]=\"isDisabled\">\n *       <div [@childAnimation]=\"exp\"></div>\n *     </div>\n *   `,\n *   animations: [\n *     trigger(\"childAnimation\", [\n *       // ...\n *     ])\n *   ]\n * })\n * class MyComponent {\n *   isDisabled = true;\n *   exp = '...';\n * }\n * ```\n *\n * When `@.disabled` is true, it prevents the `@childAnimation` trigger from animating,\n * along with any inner animations.\n *\n * ### Disable animations application-wide\n * When an area of the template is set to have animations disabled,\n * **all** inner components have their animations disabled as well.\n * This means that you can disable all animations for an app\n * by placing a host binding set on `@.disabled` on the topmost Angular component.\n *\n * ```typescript\n * import {Component, HostBinding} from '@angular/core';\n *\n * @Component({\n *   selector: 'app-component',\n *   templateUrl: 'app.component.html',\n * })\n * class AppComponent {\n *   @HostBinding('@.disabled')\n *   public animationsDisabled = true;\n * }\n * ```\n *\n * ### Overriding disablement of inner animations\n * Despite inner animations being disabled, a parent animation can `query()`\n * for inner elements located in disabled areas of the template and still animate\n * them if needed. This is also the case for when a sub animation is\n * queried by a parent and then later animated using `animateChild()`.\n *\n * ### Detecting when an animation is disabled\n * If a region of the DOM (or the entire application) has its animations disabled, the animation\n * trigger callbacks still fire, but for zero seconds. When the callback fires, it provides\n * an instance of an `AnimationEvent`. If animations are disabled,\n * the `.disabled` flag on the event is true.\n *\n * @publicApi\n */\nfunction trigger(name, definitions) {\n    return { type: 7 /* AnimationMetadataType.Trigger */, name, definitions, options: {} };\n}\n/**\n * Defines an animation step that combines styling information with timing information.\n *\n * @param timings Sets `AnimateTimings` for the parent animation.\n * A string in the format \"duration [delay] [easing]\".\n *  - Duration and delay are expressed as a number and optional time unit,\n * such as \"1s\" or \"10ms\" for one second and 10 milliseconds, respectively.\n * The default unit is milliseconds.\n *  - The easing value controls how the animation accelerates and decelerates\n * during its runtime. Value is one of  `ease`, `ease-in`, `ease-out`,\n * `ease-in-out`, or a `cubic-bezier()` function call.\n * If not supplied, no easing is applied.\n *\n * For example, the string \"1s 100ms ease-out\" specifies a duration of\n * 1000 milliseconds, and delay of 100 ms, and the \"ease-out\" easing style,\n * which decelerates near the end of the duration.\n * @param styles Sets AnimationStyles for the parent animation.\n * A function call to either `style()` or `keyframes()`\n * that returns a collection of CSS style entries to be applied to the parent animation.\n * When null, uses the styles from the destination state.\n * This is useful when describing an animation step that will complete an animation;\n * see \"Animating to the final state\" in `transitions()`.\n * @returns An object that encapsulates the animation step.\n *\n * @usageNotes\n * Call within an animation `sequence()`, `{@link animations/group group()}`, or\n * `transition()` call to specify an animation step\n * that applies given style data to the parent animation for a given amount of time.\n *\n * ### Syntax Examples\n * **Timing examples**\n *\n * The following examples show various `timings` specifications.\n * - `animate(500)` : Duration is 500 milliseconds.\n * - `animate(\"1s\")` : Duration is 1000 milliseconds.\n * - `animate(\"100ms 0.5s\")` : Duration is 100 milliseconds, delay is 500 milliseconds.\n * - `animate(\"5s ease-in\")` : Duration is 5000 milliseconds, easing in.\n * - `animate(\"5s 10ms cubic-bezier(.17,.67,.88,.1)\")` : Duration is 5000 milliseconds, delay is 10\n * milliseconds, easing according to a bezier curve.\n *\n * **Style examples**\n *\n * The following example calls `style()` to set a single CSS style.\n * ```typescript\n * animate(500, style({ background: \"red\" }))\n * ```\n * The following example calls `keyframes()` to set a CSS style\n * to different values for successive keyframes.\n * ```typescript\n * animate(500, keyframes(\n *  [\n *   style({ background: \"blue\" }),\n *   style({ background: \"red\" })\n *  ])\n * ```\n *\n * @publicApi\n */\nfunction animate(timings, styles = null) {\n    return { type: 4 /* AnimationMetadataType.Animate */, styles, timings };\n}\n/**\n * @description Defines a list of animation steps to be run in parallel.\n *\n * @param steps An array of animation step objects.\n * - When steps are defined by `style()` or `animate()`\n * function calls, each call within the group is executed instantly.\n * - To specify offset styles to be applied at a later time, define steps with\n * `keyframes()`, or use `animate()` calls with a delay value.\n * For example:\n *\n * ```typescript\n * group([\n *   animate(\"1s\", style({ background: \"black\" })),\n *   animate(\"2s\", style({ color: \"white\" }))\n * ])\n * ```\n *\n * @param options An options object containing a delay and\n * developer-defined parameters that provide styling defaults and\n * can be overridden on invocation.\n *\n * @return An object that encapsulates the group data.\n *\n * @usageNotes\n * Grouped animations are useful when a series of styles must be\n * animated at different starting times and closed off at different ending times.\n *\n * When called within a `sequence()` or a\n * `transition()` call, does not continue to the next\n * instruction until all of the inner animation steps have completed.\n *\n * @publicApi\n */\nfunction group(steps, options = null) {\n    return { type: 3 /* AnimationMetadataType.Group */, steps, options };\n}\n/**\n * Defines a list of animation steps to be run sequentially, one by one.\n *\n * @param steps An array of animation step objects.\n * - Steps defined by `style()` calls apply the styling data immediately.\n * - Steps defined by `animate()` calls apply the styling data over time\n *   as specified by the timing data.\n *\n * ```typescript\n * sequence([\n *   style({ opacity: 0 }),\n *   animate(\"1s\", style({ opacity: 1 }))\n * ])\n * ```\n *\n * @param options An options object containing a delay and\n * developer-defined parameters that provide styling defaults and\n * can be overridden on invocation.\n *\n * @return An object that encapsulates the sequence data.\n *\n * @usageNotes\n * When you pass an array of steps to a\n * `transition()` call, the steps run sequentially by default.\n * Compare this to the `{@link animations/group group()}` call, which runs animation steps in\n *parallel.\n *\n * When a sequence is used within a `{@link animations/group group()}` or a `transition()` call,\n * execution continues to the next instruction only after each of the inner animation\n * steps have completed.\n *\n * @publicApi\n **/\nfunction sequence(steps, options = null) {\n    return { type: 2 /* AnimationMetadataType.Sequence */, steps, options };\n}\n/**\n * Declares a key/value object containing CSS properties/styles that\n * can then be used for an animation [`state`](api/animations/state), within an animation\n *`sequence`, or as styling data for calls to `animate()` and `keyframes()`.\n *\n * @param tokens A set of CSS styles or HTML styles associated with an animation state.\n * The value can be any of the following:\n * - A key-value style pair associating a CSS property with a value.\n * - An array of key-value style pairs.\n * - An asterisk (*), to use auto-styling, where styles are derived from the element\n * being animated and applied to the animation when it starts.\n *\n * Auto-styling can be used to define a state that depends on layout or other\n * environmental factors.\n *\n * @return An object that encapsulates the style data.\n *\n * @usageNotes\n * The following examples create animation styles that collect a set of\n * CSS property values:\n *\n * ```typescript\n * // string values for CSS properties\n * style({ background: \"red\", color: \"blue\" })\n *\n * // numerical pixel values\n * style({ width: 100, height: 0 })\n * ```\n *\n * The following example uses auto-styling to allow an element to animate from\n * a height of 0 up to its full height:\n *\n * ```\n * style({ height: 0 }),\n * animate(\"1s\", style({ height: \"*\" }))\n * ```\n *\n * @publicApi\n **/\nfunction style(tokens) {\n    return { type: 6 /* AnimationMetadataType.Style */, styles: tokens, offset: null };\n}\n/**\n * Declares an animation state within a trigger attached to an element.\n *\n * @param name One or more names for the defined state in a comma-separated string.\n * The following reserved state names can be supplied to define a style for specific use\n * cases:\n *\n * - `void` You can associate styles with this name to be used when\n * the element is detached from the application. For example, when an `ngIf` evaluates\n * to false, the state of the associated element is void.\n *  - `*` (asterisk) Indicates the default state. You can associate styles with this name\n * to be used as the fallback when the state that is being animated is not declared\n * within the trigger.\n *\n * @param styles A set of CSS styles associated with this state, created using the\n * `style()` function.\n * This set of styles persists on the element once the state has been reached.\n * @param options Parameters that can be passed to the state when it is invoked.\n * 0 or more key-value pairs.\n * @return An object that encapsulates the new state data.\n *\n * @usageNotes\n * Use the `trigger()` function to register states to an animation trigger.\n * Use the `transition()` function to animate between states.\n * When a state is active within a component, its associated styles persist on the element,\n * even when the animation ends.\n *\n * @publicApi\n **/\nfunction state(name, styles, options) {\n    return { type: 0 /* AnimationMetadataType.State */, name, styles, options };\n}\n/**\n * Defines a set of animation styles, associating each style with an optional `offset` value.\n *\n * @param steps A set of animation styles with optional offset data.\n * The optional `offset` value for a style specifies a percentage of the total animation\n * time at which that style is applied.\n * @returns An object that encapsulates the keyframes data.\n *\n * @usageNotes\n * Use with the `animate()` call. Instead of applying animations\n * from the current state\n * to the destination state, keyframes describe how each style entry is applied and at what point\n * within the animation arc.\n * Compare [CSS Keyframe Animations](https://www.w3schools.com/css/css3_animations.asp).\n *\n * ### Usage\n *\n * In the following example, the offset values describe\n * when each `backgroundColor` value is applied. The color is red at the start, and changes to\n * blue when 20% of the total time has elapsed.\n *\n * ```typescript\n * // the provided offset values\n * animate(\"5s\", keyframes([\n *   style({ backgroundColor: \"red\", offset: 0 }),\n *   style({ backgroundColor: \"blue\", offset: 0.2 }),\n *   style({ backgroundColor: \"orange\", offset: 0.3 }),\n *   style({ backgroundColor: \"black\", offset: 1 })\n * ]))\n * ```\n *\n * If there are no `offset` values specified in the style entries, the offsets\n * are calculated automatically.\n *\n * ```typescript\n * animate(\"5s\", keyframes([\n *   style({ backgroundColor: \"red\" }) // offset = 0\n *   style({ backgroundColor: \"blue\" }) // offset = 0.33\n *   style({ backgroundColor: \"orange\" }) // offset = 0.66\n *   style({ backgroundColor: \"black\" }) // offset = 1\n * ]))\n *```\n\n * @publicApi\n */\nfunction keyframes(steps) {\n    return { type: 5 /* AnimationMetadataType.Keyframes */, steps };\n}\n/**\n * Declares an animation transition which is played when a certain specified condition is met.\n *\n * @param stateChangeExpr A string with a specific format or a function that specifies when the\n * animation transition should occur (see [State Change Expression](#state-change-expression)).\n *\n * @param steps One or more animation objects that represent the animation's instructions.\n *\n * @param options An options object that can be used to specify a delay for the animation or provide\n * custom parameters for it.\n *\n * @returns An object that encapsulates the transition data.\n *\n * @usageNotes\n *\n * ### State Change Expression\n *\n * The State Change Expression instructs Angular when to run the transition's animations, it can\n *either be\n *  - a string with a specific syntax\n *  - or a function that compares the previous and current state (value of the expression bound to\n *    the element's trigger) and returns `true` if the transition should occur or `false` otherwise\n *\n * The string format can be:\n *  - `fromState => toState`, which indicates that the transition's animations should occur then the\n *    expression bound to the trigger's element goes from `fromState` to `toState`\n *\n *    _Example:_\n *      ```typescript\n *        transition('open => closed', animate('.5s ease-out', style({ height: 0 }) ))\n *      ```\n *\n *  - `fromState <=> toState`, which indicates that the transition's animations should occur then\n *    the expression bound to the trigger's element goes from `fromState` to `toState` or vice versa\n *\n *    _Example:_\n *      ```typescript\n *        transition('enabled <=> disabled', animate('1s cubic-bezier(0.8,0.3,0,1)'))\n *      ```\n *\n *  - `:enter`/`:leave`, which indicates that the transition's animations should occur when the\n *    element enters or exists the DOM\n *\n *    _Example:_\n *      ```typescript\n *        transition(':enter', [\n *          style({ opacity: 0 }),\n *          animate('500ms', style({ opacity: 1 }))\n *        ])\n *      ```\n *\n *  - `:increment`/`:decrement`, which indicates that the transition's animations should occur when\n *    the numerical expression bound to the trigger's element has increased in value or decreased\n *\n *    _Example:_\n *      ```typescript\n *        transition(':increment', query('@counter', animateChild()))\n *      ```\n *\n *  - a sequence of any of the above divided by commas, which indicates that transition's animations\n *    should occur whenever one of the state change expressions matches\n *\n *    _Example:_\n *      ```typescript\n *        transition(':increment, * => enabled, :enter', animate('1s ease', keyframes([\n *          style({ transform: 'scale(1)', offset: 0}),\n *          style({ transform: 'scale(1.1)', offset: 0.7}),\n *          style({ transform: 'scale(1)', offset: 1})\n *        ]))),\n *      ```\n *\n * Also note that in such context:\n *  - `void` can be used to indicate the absence of the element\n *  - asterisks can be used as wildcards that match any state\n *  - (as a consequence of the above, `void => *` is equivalent to `:enter` and `* => void` is\n *    equivalent to `:leave`)\n *  - `true` and `false` also match expression values of `1` and `0` respectively (but do not match\n *    _truthy_ and _falsy_ values)\n *\n * <div class=\"alert is-helpful\">\n *\n *  Be careful about entering end leaving elements as their transitions present a common\n *  pitfall for developers.\n *\n *  Note that when an element with a trigger enters the DOM its `:enter` transition always\n *  gets executed, but its `:leave` transition will not be executed if the element is removed\n *  alongside its parent (as it will be removed \"without warning\" before its transition has\n *  a chance to be executed, the only way that such transition can occur is if the element\n *  is exiting the DOM on its own).\n *\n *\n * </div>\n *\n * ### Animating to a Final State\n *\n * If the final step in a transition is a call to `animate()` that uses a timing value\n * with no `style` data, that step is automatically considered the final animation arc,\n * for the element to reach the final state, in such case Angular automatically adds or removes\n * CSS styles to ensure that the element is in the correct final state.\n *\n *\n * ### Usage Examples\n *\n *  - Transition animations applied based on\n *    the trigger's expression value\n *\n *   ```HTML\n *   <div [@myAnimationTrigger]=\"myStatusExp\">\n *    ...\n *   </div>\n *   ```\n *\n *   ```typescript\n *   trigger(\"myAnimationTrigger\", [\n *     ..., // states\n *     transition(\"on => off, open => closed\", animate(500)),\n *     transition(\"* <=> error\", query('.indicator', animateChild()))\n *   ])\n *   ```\n *\n *  - Transition animations applied based on custom logic dependent\n *    on the trigger's expression value and provided parameters\n *\n *    ```HTML\n *    <div [@myAnimationTrigger]=\"{\n *     value: stepName,\n *     params: { target: currentTarget }\n *    }\">\n *     ...\n *    </div>\n *    ```\n *\n *    ```typescript\n *    trigger(\"myAnimationTrigger\", [\n *      ..., // states\n *      transition(\n *        (fromState, toState, _element, params) =>\n *          ['firststep', 'laststep'].includes(fromState.toLowerCase())\n *          && toState === params?.['target'],\n *        animate('1s')\n *      )\n *    ])\n *    ```\n *\n * @publicApi\n **/\nfunction transition(stateChangeExpr, steps, options = null) {\n    return { type: 1 /* AnimationMetadataType.Transition */, expr: stateChangeExpr, animation: steps, options };\n}\n/**\n * Produces a reusable animation that can be invoked in another animation or sequence,\n * by calling the `useAnimation()` function.\n *\n * @param steps One or more animation objects, as returned by the `animate()`\n * or `sequence()` function, that form a transformation from one state to another.\n * A sequence is used by default when you pass an array.\n * @param options An options object that can contain a delay value for the start of the\n * animation, and additional developer-defined parameters.\n * Provided values for additional parameters are used as defaults,\n * and override values can be passed to the caller on invocation.\n * @returns An object that encapsulates the animation data.\n *\n * @usageNotes\n * The following example defines a reusable animation, providing some default parameter\n * values.\n *\n * ```typescript\n * var fadeAnimation = animation([\n *   style({ opacity: '{{ start }}' }),\n *   animate('{{ time }}',\n *   style({ opacity: '{{ end }}'}))\n *   ],\n *   { params: { time: '1000ms', start: 0, end: 1 }});\n * ```\n *\n * The following invokes the defined animation with a call to `useAnimation()`,\n * passing in override parameter values.\n *\n * ```js\n * useAnimation(fadeAnimation, {\n *   params: {\n *     time: '2s',\n *     start: 1,\n *     end: 0\n *   }\n * })\n * ```\n *\n * If any of the passed-in parameter values are missing from this call,\n * the default values are used. If one or more parameter values are missing before a step is\n * animated, `useAnimation()` throws an error.\n *\n * @publicApi\n */\nfunction animation(steps, options = null) {\n    return { type: 8 /* AnimationMetadataType.Reference */, animation: steps, options };\n}\n/**\n * Executes a queried inner animation element within an animation sequence.\n *\n * @param options An options object that can contain a delay value for the start of the\n * animation, and additional override values for developer-defined parameters.\n * @return An object that encapsulates the child animation data.\n *\n * @usageNotes\n * Each time an animation is triggered in Angular, the parent animation\n * has priority and any child animations are blocked. In order\n * for a child animation to run, the parent animation must query each of the elements\n * containing child animations, and run them using this function.\n *\n * Note that this feature is designed to be used with `query()` and it will only work\n * with animations that are assigned using the Angular animation library. CSS keyframes\n * and transitions are not handled by this API.\n *\n * @publicApi\n */\nfunction animateChild(options = null) {\n    return { type: 9 /* AnimationMetadataType.AnimateChild */, options };\n}\n/**\n * Starts a reusable animation that is created using the `animation()` function.\n *\n * @param animation The reusable animation to start.\n * @param options An options object that can contain a delay value for the start of\n * the animation, and additional override values for developer-defined parameters.\n * @return An object that contains the animation parameters.\n *\n * @publicApi\n */\nfunction useAnimation(animation, options = null) {\n    return { type: 10 /* AnimationMetadataType.AnimateRef */, animation, options };\n}\n/**\n * Finds one or more inner elements within the current element that is\n * being animated within a sequence. Use with `animate()`.\n *\n * @param selector The element to query, or a set of elements that contain Angular-specific\n * characteristics, specified with one or more of the following tokens.\n *  - `query(\":enter\")` or `query(\":leave\")` : Query for newly inserted/removed elements (not\n *     all elements can be queried via these tokens, see\n *     [Entering and Leaving Elements](#entering-and-leaving-elements))\n *  - `query(\":animating\")` : Query all currently animating elements.\n *  - `query(\"@triggerName\")` : Query elements that contain an animation trigger.\n *  - `query(\"@*\")` : Query all elements that contain an animation triggers.\n *  - `query(\":self\")` : Include the current element into the animation sequence.\n *\n * @param animation One or more animation steps to apply to the queried element or elements.\n * An array is treated as an animation sequence.\n * @param options An options object. Use the 'limit' field to limit the total number of\n * items to collect.\n * @return An object that encapsulates the query data.\n *\n * @usageNotes\n *\n * ### Multiple Tokens\n *\n * Tokens can be merged into a combined query selector string. For example:\n *\n * ```typescript\n *  query(':self, .record:enter, .record:leave, @subTrigger', [...])\n * ```\n *\n * The `query()` function collects multiple elements and works internally by using\n * `element.querySelectorAll`. Use the `limit` field of an options object to limit\n * the total number of items to be collected. For example:\n *\n * ```js\n * query('div', [\n *   animate(...),\n *   animate(...)\n * ], { limit: 1 })\n * ```\n *\n * By default, throws an error when zero items are found. Set the\n * `optional` flag to ignore this error. For example:\n *\n * ```js\n * query('.some-element-that-may-not-be-there', [\n *   animate(...),\n *   animate(...)\n * ], { optional: true })\n * ```\n *\n * ### Entering and Leaving Elements\n *\n * Not all elements can be queried via the `:enter` and `:leave` tokens, the only ones\n * that can are those that Angular assumes can enter/leave based on their own logic\n * (if their insertion/removal is simply a consequence of that of their parent they\n * should be queried via a different token in their parent's `:enter`/`:leave` transitions).\n *\n * The only elements Angular assumes can enter/leave based on their own logic (thus the only\n * ones that can be queried via the `:enter` and `:leave` tokens) are:\n *  - Those inserted dynamically (via `ViewContainerRef`)\n *  - Those that have a structural directive (which, under the hood, are a subset of the above ones)\n *\n * <div class=\"alert is-helpful\">\n *\n *  Note that elements will be successfully queried via `:enter`/`:leave` even if their\n *  insertion/removal is not done manually via `ViewContainerRef`or caused by their structural\n *  directive (e.g. they enter/exit alongside their parent).\n *\n * </div>\n *\n * <div class=\"alert is-important\">\n *\n *  There is an exception to what previously mentioned, besides elements entering/leaving based on\n *  their own logic, elements with an animation trigger can always be queried via `:leave` when\n * their parent is also leaving.\n *\n * </div>\n *\n * ### Usage Example\n *\n * The following example queries for inner elements and animates them\n * individually using `animate()`.\n *\n * ```typescript\n * @Component({\n *   selector: 'inner',\n *   template: `\n *     <div [@queryAnimation]=\"exp\">\n *       <h1>Title</h1>\n *       <div class=\"content\">\n *         Blah blah blah\n *       </div>\n *     </div>\n *   `,\n *   animations: [\n *    trigger('queryAnimation', [\n *      transition('* => goAnimate', [\n *        // hide the inner elements\n *        query('h1', style({ opacity: 0 })),\n *        query('.content', style({ opacity: 0 })),\n *\n *        // animate the inner elements in, one by one\n *        query('h1', animate(1000, style({ opacity: 1 }))),\n *        query('.content', animate(1000, style({ opacity: 1 }))),\n *      ])\n *    ])\n *  ]\n * })\n * class Cmp {\n *   exp = '';\n *\n *   goAnimate() {\n *     this.exp = 'goAnimate';\n *   }\n * }\n * ```\n *\n * @publicApi\n */\nfunction query(selector, animation, options = null) {\n    return { type: 11 /* AnimationMetadataType.Query */, selector, animation, options };\n}\n/**\n * Use within an animation `query()` call to issue a timing gap after\n * each queried item is animated.\n *\n * @param timings A delay value.\n * @param animation One ore more animation steps.\n * @returns An object that encapsulates the stagger data.\n *\n * @usageNotes\n * In the following example, a container element wraps a list of items stamped out\n * by an `ngFor`. The container element contains an animation trigger that will later be set\n * to query for each of the inner items.\n *\n * Each time items are added, the opacity fade-in animation runs,\n * and each removed item is faded out.\n * When either of these animations occur, the stagger effect is\n * applied after each item's animation is started.\n *\n * ```html\n * <!-- list.component.html -->\n * <button (click)=\"toggle()\">Show / Hide Items</button>\n * <hr />\n * <div [@listAnimation]=\"items.length\">\n *   <div *ngFor=\"let item of items\">\n *     {{ item }}\n *   </div>\n * </div>\n * ```\n *\n * Here is the component code:\n *\n * ```typescript\n * import {trigger, transition, style, animate, query, stagger} from '@angular/animations';\n * @Component({\n *   templateUrl: 'list.component.html',\n *   animations: [\n *     trigger('listAnimation', [\n *     ...\n *     ])\n *   ]\n * })\n * class ListComponent {\n *   items = [];\n *\n *   showItems() {\n *     this.items = [0,1,2,3,4];\n *   }\n *\n *   hideItems() {\n *     this.items = [];\n *   }\n *\n *   toggle() {\n *     this.items.length ? this.hideItems() : this.showItems();\n *    }\n *  }\n * ```\n *\n * Here is the animation trigger code:\n *\n * ```typescript\n * trigger('listAnimation', [\n *   transition('* => *', [ // each time the binding value changes\n *     query(':leave', [\n *       stagger(100, [\n *         animate('0.5s', style({ opacity: 0 }))\n *       ])\n *     ]),\n *     query(':enter', [\n *       style({ opacity: 0 }),\n *       stagger(100, [\n *         animate('0.5s', style({ opacity: 1 }))\n *       ])\n *     ])\n *   ])\n * ])\n * ```\n *\n * @publicApi\n */\nfunction stagger(timings, animation) {\n    return { type: 12 /* AnimationMetadataType.Stagger */, timings, animation };\n}\n\nfunction scheduleMicroTask(cb) {\n    Promise.resolve().then(cb);\n}\n\n/**\n * An empty programmatic controller for reusable animations.\n * Used internally when animations are disabled, to avoid\n * checking for the null case when an animation player is expected.\n *\n * @see `animate()`\n * @see `AnimationPlayer`\n * @see `GroupPlayer`\n *\n * @publicApi\n */\nclass NoopAnimationPlayer {\n    constructor(duration = 0, delay = 0) {\n        this._onDoneFns = [];\n        this._onStartFns = [];\n        this._onDestroyFns = [];\n        this._originalOnDoneFns = [];\n        this._originalOnStartFns = [];\n        this._started = false;\n        this._destroyed = false;\n        this._finished = false;\n        this._position = 0;\n        this.parentPlayer = null;\n        this.totalTime = duration + delay;\n    }\n    _onFinish() {\n        if (!this._finished) {\n            this._finished = true;\n            this._onDoneFns.forEach(fn => fn());\n            this._onDoneFns = [];\n        }\n    }\n    onStart(fn) {\n        this._originalOnStartFns.push(fn);\n        this._onStartFns.push(fn);\n    }\n    onDone(fn) {\n        this._originalOnDoneFns.push(fn);\n        this._onDoneFns.push(fn);\n    }\n    onDestroy(fn) {\n        this._onDestroyFns.push(fn);\n    }\n    hasStarted() {\n        return this._started;\n    }\n    init() { }\n    play() {\n        if (!this.hasStarted()) {\n            this._onStart();\n            this.triggerMicrotask();\n        }\n        this._started = true;\n    }\n    /** @internal */\n    triggerMicrotask() {\n        scheduleMicroTask(() => this._onFinish());\n    }\n    _onStart() {\n        this._onStartFns.forEach(fn => fn());\n        this._onStartFns = [];\n    }\n    pause() { }\n    restart() { }\n    finish() {\n        this._onFinish();\n    }\n    destroy() {\n        if (!this._destroyed) {\n            this._destroyed = true;\n            if (!this.hasStarted()) {\n                this._onStart();\n            }\n            this.finish();\n            this._onDestroyFns.forEach(fn => fn());\n            this._onDestroyFns = [];\n        }\n    }\n    reset() {\n        this._started = false;\n        this._finished = false;\n        this._onStartFns = this._originalOnStartFns;\n        this._onDoneFns = this._originalOnDoneFns;\n    }\n    setPosition(position) {\n        this._position = this.totalTime ? position * this.totalTime : 1;\n    }\n    getPosition() {\n        return this.totalTime ? this._position / this.totalTime : 1;\n    }\n    /** @internal */\n    triggerCallback(phaseName) {\n        const methods = phaseName == 'start' ? this._onStartFns : this._onDoneFns;\n        methods.forEach(fn => fn());\n        methods.length = 0;\n    }\n}\n\n/**\n * A programmatic controller for a group of reusable animations.\n * Used internally to control animations.\n *\n * @see `AnimationPlayer`\n * @see `{@link animations/group group()}`\n *\n */\nclass AnimationGroupPlayer {\n    constructor(_players) {\n        this._onDoneFns = [];\n        this._onStartFns = [];\n        this._finished = false;\n        this._started = false;\n        this._destroyed = false;\n        this._onDestroyFns = [];\n        this.parentPlayer = null;\n        this.totalTime = 0;\n        this.players = _players;\n        let doneCount = 0;\n        let destroyCount = 0;\n        let startCount = 0;\n        const total = this.players.length;\n        if (total == 0) {\n            scheduleMicroTask(() => this._onFinish());\n        }\n        else {\n            this.players.forEach(player => {\n                player.onDone(() => {\n                    if (++doneCount == total) {\n                        this._onFinish();\n                    }\n                });\n                player.onDestroy(() => {\n                    if (++destroyCount == total) {\n                        this._onDestroy();\n                    }\n                });\n                player.onStart(() => {\n                    if (++startCount == total) {\n                        this._onStart();\n                    }\n                });\n            });\n        }\n        this.totalTime = this.players.reduce((time, player) => Math.max(time, player.totalTime), 0);\n    }\n    _onFinish() {\n        if (!this._finished) {\n            this._finished = true;\n            this._onDoneFns.forEach(fn => fn());\n            this._onDoneFns = [];\n        }\n    }\n    init() {\n        this.players.forEach(player => player.init());\n    }\n    onStart(fn) {\n        this._onStartFns.push(fn);\n    }\n    _onStart() {\n        if (!this.hasStarted()) {\n            this._started = true;\n            this._onStartFns.forEach(fn => fn());\n            this._onStartFns = [];\n        }\n    }\n    onDone(fn) {\n        this._onDoneFns.push(fn);\n    }\n    onDestroy(fn) {\n        this._onDestroyFns.push(fn);\n    }\n    hasStarted() {\n        return this._started;\n    }\n    play() {\n        if (!this.parentPlayer) {\n            this.init();\n        }\n        this._onStart();\n        this.players.forEach(player => player.play());\n    }\n    pause() {\n        this.players.forEach(player => player.pause());\n    }\n    restart() {\n        this.players.forEach(player => player.restart());\n    }\n    finish() {\n        this._onFinish();\n        this.players.forEach(player => player.finish());\n    }\n    destroy() {\n        this._onDestroy();\n    }\n    _onDestroy() {\n        if (!this._destroyed) {\n            this._destroyed = true;\n            this._onFinish();\n            this.players.forEach(player => player.destroy());\n            this._onDestroyFns.forEach(fn => fn());\n            this._onDestroyFns = [];\n        }\n    }\n    reset() {\n        this.players.forEach(player => player.reset());\n        this._destroyed = false;\n        this._finished = false;\n        this._started = false;\n    }\n    setPosition(p) {\n        const timeAtPosition = p * this.totalTime;\n        this.players.forEach(player => {\n            const position = player.totalTime ? Math.min(1, timeAtPosition / player.totalTime) : 1;\n            player.setPosition(position);\n        });\n    }\n    getPosition() {\n        const longestPlayer = this.players.reduce((longestSoFar, player) => {\n            const newPlayerIsLongest = longestSoFar === null || player.totalTime > longestSoFar.totalTime;\n            return newPlayerIsLongest ? player : longestSoFar;\n        }, null);\n        return longestPlayer != null ? longestPlayer.getPosition() : 0;\n    }\n    beforeDestroy() {\n        this.players.forEach(player => {\n            if (player.beforeDestroy) {\n                player.beforeDestroy();\n            }\n        });\n    }\n    /** @internal */\n    triggerCallback(phaseName) {\n        const methods = phaseName == 'start' ? this._onStartFns : this._onDoneFns;\n        methods.forEach(fn => fn());\n        methods.length = 0;\n    }\n}\n\nconst ɵPRE_STYLE = '!';\n\n/**\n * @module\n * @description\n * Entry point for all animation APIs of the animation package.\n */\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of this package.\n */\n\n// This file is not used to build this module. It is only used during editing\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { AUTO_STYLE, AnimationBuilder, AnimationFactory, NoopAnimationPlayer, animate, animateChild, animation, group, keyframes, query, sequence, stagger, state, style, transition, trigger, useAnimation, AnimationGroupPlayer as ɵAnimationGroupPlayer, ɵPRE_STYLE };\n","/**\n * @license Angular v15.2.9\n * (c) 2010-2022 Google LLC. https://angular.io/\n * License: MIT\n */\n\nimport { ɵAnimationGroupPlayer, NoopAnimationPlayer, AUTO_STYLE, ɵPRE_STYLE, sequence, style } from '@angular/animations';\nimport * as i0 from '@angular/core';\nimport { ɵRuntimeError, Injectable } from '@angular/core';\n\nconst LINE_START = '\\n - ';\nfunction invalidTimingValue(exp) {\n    return new ɵRuntimeError(3000 /* RuntimeErrorCode.INVALID_TIMING_VALUE */, ngDevMode && `The provided timing value \"${exp}\" is invalid.`);\n}\nfunction negativeStepValue() {\n    return new ɵRuntimeError(3100 /* RuntimeErrorCode.NEGATIVE_STEP_VALUE */, ngDevMode && 'Duration values below 0 are not allowed for this animation step.');\n}\nfunction negativeDelayValue() {\n    return new ɵRuntimeError(3101 /* RuntimeErrorCode.NEGATIVE_DELAY_VALUE */, ngDevMode && 'Delay values below 0 are not allowed for this animation step.');\n}\nfunction invalidStyleParams(varName) {\n    return new ɵRuntimeError(3001 /* RuntimeErrorCode.INVALID_STYLE_PARAMS */, ngDevMode &&\n        `Unable to resolve the local animation param ${varName} in the given list of values`);\n}\nfunction invalidParamValue(varName) {\n    return new ɵRuntimeError(3003 /* RuntimeErrorCode.INVALID_PARAM_VALUE */, ngDevMode && `Please provide a value for the animation param ${varName}`);\n}\nfunction invalidNodeType(nodeType) {\n    return new ɵRuntimeError(3004 /* RuntimeErrorCode.INVALID_NODE_TYPE */, ngDevMode && `Unable to resolve animation metadata node #${nodeType}`);\n}\nfunction invalidCssUnitValue(userProvidedProperty, value) {\n    return new ɵRuntimeError(3005 /* RuntimeErrorCode.INVALID_CSS_UNIT_VALUE */, ngDevMode && `Please provide a CSS unit value for ${userProvidedProperty}:${value}`);\n}\nfunction invalidTrigger() {\n    return new ɵRuntimeError(3006 /* RuntimeErrorCode.INVALID_TRIGGER */, ngDevMode &&\n        'animation triggers cannot be prefixed with an `@` sign (e.g. trigger(\\'@foo\\', [...]))');\n}\nfunction invalidDefinition() {\n    return new ɵRuntimeError(3007 /* RuntimeErrorCode.INVALID_DEFINITION */, ngDevMode && 'only state() and transition() definitions can sit inside of a trigger()');\n}\nfunction invalidState(metadataName, missingSubs) {\n    return new ɵRuntimeError(3008 /* RuntimeErrorCode.INVALID_STATE */, ngDevMode &&\n        `state(\"${metadataName}\", ...) must define default values for all the following style substitutions: ${missingSubs.join(', ')}`);\n}\nfunction invalidStyleValue(value) {\n    return new ɵRuntimeError(3002 /* RuntimeErrorCode.INVALID_STYLE_VALUE */, ngDevMode && `The provided style string value ${value} is not allowed.`);\n}\nfunction invalidProperty(prop) {\n    return new ɵRuntimeError(3009 /* RuntimeErrorCode.INVALID_PROPERTY */, ngDevMode &&\n        `The provided animation property \"${prop}\" is not a supported CSS property for animations`);\n}\nfunction invalidParallelAnimation(prop, firstStart, firstEnd, secondStart, secondEnd) {\n    return new ɵRuntimeError(3010 /* RuntimeErrorCode.INVALID_PARALLEL_ANIMATION */, ngDevMode &&\n        `The CSS property \"${prop}\" that exists between the times of \"${firstStart}ms\" and \"${firstEnd}ms\" is also being animated in a parallel animation between the times of \"${secondStart}ms\" and \"${secondEnd}ms\"`);\n}\nfunction invalidKeyframes() {\n    return new ɵRuntimeError(3011 /* RuntimeErrorCode.INVALID_KEYFRAMES */, ngDevMode && `keyframes() must be placed inside of a call to animate()`);\n}\nfunction invalidOffset() {\n    return new ɵRuntimeError(3012 /* RuntimeErrorCode.INVALID_OFFSET */, ngDevMode && `Please ensure that all keyframe offsets are between 0 and 1`);\n}\nfunction keyframeOffsetsOutOfOrder() {\n    return new ɵRuntimeError(3200 /* RuntimeErrorCode.KEYFRAME_OFFSETS_OUT_OF_ORDER */, ngDevMode && `Please ensure that all keyframe offsets are in order`);\n}\nfunction keyframesMissingOffsets() {\n    return new ɵRuntimeError(3202 /* RuntimeErrorCode.KEYFRAMES_MISSING_OFFSETS */, ngDevMode && `Not all style() steps within the declared keyframes() contain offsets`);\n}\nfunction invalidStagger() {\n    return new ɵRuntimeError(3013 /* RuntimeErrorCode.INVALID_STAGGER */, ngDevMode && `stagger() can only be used inside of query()`);\n}\nfunction invalidQuery(selector) {\n    return new ɵRuntimeError(3014 /* RuntimeErrorCode.INVALID_QUERY */, ngDevMode &&\n        `\\`query(\"${selector}\")\\` returned zero elements. (Use \\`query(\"${selector}\", { optional: true })\\` if you wish to allow this.)`);\n}\nfunction invalidExpression(expr) {\n    return new ɵRuntimeError(3015 /* RuntimeErrorCode.INVALID_EXPRESSION */, ngDevMode && `The provided transition expression \"${expr}\" is not supported`);\n}\nfunction invalidTransitionAlias(alias) {\n    return new ɵRuntimeError(3016 /* RuntimeErrorCode.INVALID_TRANSITION_ALIAS */, ngDevMode && `The transition alias value \"${alias}\" is not supported`);\n}\nfunction validationFailed(errors) {\n    return new ɵRuntimeError(3500 /* RuntimeErrorCode.VALIDATION_FAILED */, ngDevMode && `animation validation failed:\\n${errors.map(err => err.message).join('\\n')}`);\n}\nfunction buildingFailed(errors) {\n    return new ɵRuntimeError(3501 /* RuntimeErrorCode.BUILDING_FAILED */, ngDevMode && `animation building failed:\\n${errors.map(err => err.message).join('\\n')}`);\n}\nfunction triggerBuildFailed(name, errors) {\n    return new ɵRuntimeError(3404 /* RuntimeErrorCode.TRIGGER_BUILD_FAILED */, ngDevMode &&\n        `The animation trigger \"${name}\" has failed to build due to the following errors:\\n - ${errors.map(err => err.message).join('\\n - ')}`);\n}\nfunction animationFailed(errors) {\n    return new ɵRuntimeError(3502 /* RuntimeErrorCode.ANIMATION_FAILED */, ngDevMode &&\n        `Unable to animate due to the following errors:${LINE_START}${errors.map(err => err.message).join(LINE_START)}`);\n}\nfunction registerFailed(errors) {\n    return new ɵRuntimeError(3503 /* RuntimeErrorCode.REGISTRATION_FAILED */, ngDevMode &&\n        `Unable to build the animation due to the following errors: ${errors.map(err => err.message).join('\\n')}`);\n}\nfunction missingOrDestroyedAnimation() {\n    return new ɵRuntimeError(3300 /* RuntimeErrorCode.MISSING_OR_DESTROYED_ANIMATION */, ngDevMode && 'The requested animation doesn\\'t exist or has already been destroyed');\n}\nfunction createAnimationFailed(errors) {\n    return new ɵRuntimeError(3504 /* RuntimeErrorCode.CREATE_ANIMATION_FAILED */, ngDevMode &&\n        `Unable to create the animation due to the following errors:${errors.map(err => err.message).join('\\n')}`);\n}\nfunction missingPlayer(id) {\n    return new ɵRuntimeError(3301 /* RuntimeErrorCode.MISSING_PLAYER */, ngDevMode && `Unable to find the timeline player referenced by ${id}`);\n}\nfunction missingTrigger(phase, name) {\n    return new ɵRuntimeError(3302 /* RuntimeErrorCode.MISSING_TRIGGER */, ngDevMode &&\n        `Unable to listen on the animation trigger event \"${phase}\" because the animation trigger \"${name}\" doesn\\'t exist!`);\n}\nfunction missingEvent(name) {\n    return new ɵRuntimeError(3303 /* RuntimeErrorCode.MISSING_EVENT */, ngDevMode &&\n        `Unable to listen on the animation trigger \"${name}\" because the provided event is undefined!`);\n}\nfunction unsupportedTriggerEvent(phase, name) {\n    return new ɵRuntimeError(3400 /* RuntimeErrorCode.UNSUPPORTED_TRIGGER_EVENT */, ngDevMode &&\n        `The provided animation trigger event \"${phase}\" for the animation trigger \"${name}\" is not supported!`);\n}\nfunction unregisteredTrigger(name) {\n    return new ɵRuntimeError(3401 /* RuntimeErrorCode.UNREGISTERED_TRIGGER */, ngDevMode && `The provided animation trigger \"${name}\" has not been registered!`);\n}\nfunction triggerTransitionsFailed(errors) {\n    return new ɵRuntimeError(3402 /* RuntimeErrorCode.TRIGGER_TRANSITIONS_FAILED */, ngDevMode &&\n        `Unable to process animations due to the following failed trigger transitions\\n ${errors.map(err => err.message).join('\\n')}`);\n}\nfunction triggerParsingFailed(name, errors) {\n    return new ɵRuntimeError(3403 /* RuntimeErrorCode.TRIGGER_PARSING_FAILED */, ngDevMode &&\n        `Animation parsing for the ${name} trigger have failed:${LINE_START}${errors.map(err => err.message).join(LINE_START)}`);\n}\nfunction transitionFailed(name, errors) {\n    return new ɵRuntimeError(3505 /* RuntimeErrorCode.TRANSITION_FAILED */, ngDevMode && `@${name} has failed due to:\\n ${errors.map(err => err.message).join('\\n- ')}`);\n}\n\n/**\n * Set of all animatable CSS properties\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_animated_properties\n */\nconst ANIMATABLE_PROP_SET = new Set([\n    '-moz-outline-radius',\n    '-moz-outline-radius-bottomleft',\n    '-moz-outline-radius-bottomright',\n    '-moz-outline-radius-topleft',\n    '-moz-outline-radius-topright',\n    '-ms-grid-columns',\n    '-ms-grid-rows',\n    '-webkit-line-clamp',\n    '-webkit-text-fill-color',\n    '-webkit-text-stroke',\n    '-webkit-text-stroke-color',\n    'accent-color',\n    'all',\n    'backdrop-filter',\n    'background',\n    'background-color',\n    'background-position',\n    'background-size',\n    'block-size',\n    'border',\n    'border-block-end',\n    'border-block-end-color',\n    'border-block-end-width',\n    'border-block-start',\n    'border-block-start-color',\n    'border-block-start-width',\n    'border-bottom',\n    'border-bottom-color',\n    'border-bottom-left-radius',\n    'border-bottom-right-radius',\n    'border-bottom-width',\n    'border-color',\n    'border-end-end-radius',\n    'border-end-start-radius',\n    'border-image-outset',\n    'border-image-slice',\n    'border-image-width',\n    'border-inline-end',\n    'border-inline-end-color',\n    'border-inline-end-width',\n    'border-inline-start',\n    'border-inline-start-color',\n    'border-inline-start-width',\n    'border-left',\n    'border-left-color',\n    'border-left-width',\n    'border-radius',\n    'border-right',\n    'border-right-color',\n    'border-right-width',\n    'border-start-end-radius',\n    'border-start-start-radius',\n    'border-top',\n    'border-top-color',\n    'border-top-left-radius',\n    'border-top-right-radius',\n    'border-top-width',\n    'border-width',\n    'bottom',\n    'box-shadow',\n    'caret-color',\n    'clip',\n    'clip-path',\n    'color',\n    'column-count',\n    'column-gap',\n    'column-rule',\n    'column-rule-color',\n    'column-rule-width',\n    'column-width',\n    'columns',\n    'filter',\n    'flex',\n    'flex-basis',\n    'flex-grow',\n    'flex-shrink',\n    'font',\n    'font-size',\n    'font-size-adjust',\n    'font-stretch',\n    'font-variation-settings',\n    'font-weight',\n    'gap',\n    'grid-column-gap',\n    'grid-gap',\n    'grid-row-gap',\n    'grid-template-columns',\n    'grid-template-rows',\n    'height',\n    'inline-size',\n    'input-security',\n    'inset',\n    'inset-block',\n    'inset-block-end',\n    'inset-block-start',\n    'inset-inline',\n    'inset-inline-end',\n    'inset-inline-start',\n    'left',\n    'letter-spacing',\n    'line-clamp',\n    'line-height',\n    'margin',\n    'margin-block-end',\n    'margin-block-start',\n    'margin-bottom',\n    'margin-inline-end',\n    'margin-inline-start',\n    'margin-left',\n    'margin-right',\n    'margin-top',\n    'mask',\n    'mask-border',\n    'mask-position',\n    'mask-size',\n    'max-block-size',\n    'max-height',\n    'max-inline-size',\n    'max-lines',\n    'max-width',\n    'min-block-size',\n    'min-height',\n    'min-inline-size',\n    'min-width',\n    'object-position',\n    'offset',\n    'offset-anchor',\n    'offset-distance',\n    'offset-path',\n    'offset-position',\n    'offset-rotate',\n    'opacity',\n    'order',\n    'outline',\n    'outline-color',\n    'outline-offset',\n    'outline-width',\n    'padding',\n    'padding-block-end',\n    'padding-block-start',\n    'padding-bottom',\n    'padding-inline-end',\n    'padding-inline-start',\n    'padding-left',\n    'padding-right',\n    'padding-top',\n    'perspective',\n    'perspective-origin',\n    'right',\n    'rotate',\n    'row-gap',\n    'scale',\n    'scroll-margin',\n    'scroll-margin-block',\n    'scroll-margin-block-end',\n    'scroll-margin-block-start',\n    'scroll-margin-bottom',\n    'scroll-margin-inline',\n    'scroll-margin-inline-end',\n    'scroll-margin-inline-start',\n    'scroll-margin-left',\n    'scroll-margin-right',\n    'scroll-margin-top',\n    'scroll-padding',\n    'scroll-padding-block',\n    'scroll-padding-block-end',\n    'scroll-padding-block-start',\n    'scroll-padding-bottom',\n    'scroll-padding-inline',\n    'scroll-padding-inline-end',\n    'scroll-padding-inline-start',\n    'scroll-padding-left',\n    'scroll-padding-right',\n    'scroll-padding-top',\n    'scroll-snap-coordinate',\n    'scroll-snap-destination',\n    'scrollbar-color',\n    'shape-image-threshold',\n    'shape-margin',\n    'shape-outside',\n    'tab-size',\n    'text-decoration',\n    'text-decoration-color',\n    'text-decoration-thickness',\n    'text-emphasis',\n    'text-emphasis-color',\n    'text-indent',\n    'text-shadow',\n    'text-underline-offset',\n    'top',\n    'transform',\n    'transform-origin',\n    'translate',\n    'vertical-align',\n    'visibility',\n    'width',\n    'word-spacing',\n    'z-index',\n    'zoom',\n]);\n\nfunction isBrowser() {\n    return (typeof window !== 'undefined' && typeof window.document !== 'undefined');\n}\nfunction isNode() {\n    // Checking only for `process` isn't enough to identify whether or not we're in a Node\n    // environment, because Webpack by default will polyfill the `process`. While we can discern\n    // that Webpack polyfilled it by looking at `process.browser`, it's very Webpack-specific and\n    // might not be future-proof. Instead we look at the stringified version of `process` which\n    // is `[object process]` in Node and `[object Object]` when polyfilled.\n    return typeof process !== 'undefined' && {}.toString.call(process) === '[object process]';\n}\nfunction optimizeGroupPlayer(players) {\n    switch (players.length) {\n        case 0:\n            return new NoopAnimationPlayer();\n        case 1:\n            return players[0];\n        default:\n            return new ɵAnimationGroupPlayer(players);\n    }\n}\nfunction normalizeKeyframes$1(driver, normalizer, element, keyframes, preStyles = new Map(), postStyles = new Map()) {\n    const errors = [];\n    const normalizedKeyframes = [];\n    let previousOffset = -1;\n    let previousKeyframe = null;\n    keyframes.forEach(kf => {\n        const offset = kf.get('offset');\n        const isSameOffset = offset == previousOffset;\n        const normalizedKeyframe = (isSameOffset && previousKeyframe) || new Map();\n        kf.forEach((val, prop) => {\n            let normalizedProp = prop;\n            let normalizedValue = val;\n            if (prop !== 'offset') {\n                normalizedProp = normalizer.normalizePropertyName(normalizedProp, errors);\n                switch (normalizedValue) {\n                    case ɵPRE_STYLE:\n                        normalizedValue = preStyles.get(prop);\n                        break;\n                    case AUTO_STYLE:\n                        normalizedValue = postStyles.get(prop);\n                        break;\n                    default:\n                        normalizedValue =\n                            normalizer.normalizeStyleValue(prop, normalizedProp, normalizedValue, errors);\n                        break;\n                }\n            }\n            normalizedKeyframe.set(normalizedProp, normalizedValue);\n        });\n        if (!isSameOffset) {\n            normalizedKeyframes.push(normalizedKeyframe);\n        }\n        previousKeyframe = normalizedKeyframe;\n        previousOffset = offset;\n    });\n    if (errors.length) {\n        throw animationFailed(errors);\n    }\n    return normalizedKeyframes;\n}\nfunction listenOnPlayer(player, eventName, event, callback) {\n    switch (eventName) {\n        case 'start':\n            player.onStart(() => callback(event && copyAnimationEvent(event, 'start', player)));\n            break;\n        case 'done':\n            player.onDone(() => callback(event && copyAnimationEvent(event, 'done', player)));\n            break;\n        case 'destroy':\n            player.onDestroy(() => callback(event && copyAnimationEvent(event, 'destroy', player)));\n            break;\n    }\n}\nfunction copyAnimationEvent(e, phaseName, player) {\n    const totalTime = player.totalTime;\n    const disabled = player.disabled ? true : false;\n    const event = makeAnimationEvent(e.element, e.triggerName, e.fromState, e.toState, phaseName || e.phaseName, totalTime == undefined ? e.totalTime : totalTime, disabled);\n    const data = e['_data'];\n    if (data != null) {\n        event['_data'] = data;\n    }\n    return event;\n}\nfunction makeAnimationEvent(element, triggerName, fromState, toState, phaseName = '', totalTime = 0, disabled) {\n    return { element, triggerName, fromState, toState, phaseName, totalTime, disabled: !!disabled };\n}\nfunction getOrSetDefaultValue(map, key, defaultValue) {\n    let value = map.get(key);\n    if (!value) {\n        map.set(key, value = defaultValue);\n    }\n    return value;\n}\nfunction parseTimelineCommand(command) {\n    const separatorPos = command.indexOf(':');\n    const id = command.substring(1, separatorPos);\n    const action = command.slice(separatorPos + 1);\n    return [id, action];\n}\nlet _contains = (elm1, elm2) => false;\nlet _query = (element, selector, multi) => {\n    return [];\n};\nlet _documentElement = null;\nfunction getParentElement(element) {\n    const parent = element.parentNode || element.host; // consider host to support shadow DOM\n    if (parent === _documentElement) {\n        return null;\n    }\n    return parent;\n}\n// Define utility methods for browsers and platform-server(domino) where Element\n// and utility methods exist.\nconst _isNode = isNode();\nif (_isNode || typeof Element !== 'undefined') {\n    if (!isBrowser()) {\n        _contains = (elm1, elm2) => elm1.contains(elm2);\n    }\n    else {\n        // Read the document element in an IIFE that's been marked pure to avoid a top-level property\n        // read that may prevent tree-shaking.\n        _documentElement = /* @__PURE__ */ (() => document.documentElement)();\n        _contains = (elm1, elm2) => {\n            while (elm2) {\n                if (elm2 === elm1) {\n                    return true;\n                }\n                elm2 = getParentElement(elm2);\n            }\n            return false;\n        };\n    }\n    _query = (element, selector, multi) => {\n        if (multi) {\n            return Array.from(element.querySelectorAll(selector));\n        }\n        const elem = element.querySelector(selector);\n        return elem ? [elem] : [];\n    };\n}\nfunction containsVendorPrefix(prop) {\n    // Webkit is the only real popular vendor prefix nowadays\n    // cc: http://shouldiprefix.com/\n    return prop.substring(1, 6) == 'ebkit'; // webkit or Webkit\n}\nlet _CACHED_BODY = null;\nlet _IS_WEBKIT = false;\nfunction validateStyleProperty(prop) {\n    if (!_CACHED_BODY) {\n        _CACHED_BODY = getBodyNode() || {};\n        _IS_WEBKIT = _CACHED_BODY.style ? ('WebkitAppearance' in _CACHED_BODY.style) : false;\n    }\n    let result = true;\n    if (_CACHED_BODY.style && !containsVendorPrefix(prop)) {\n        result = prop in _CACHED_BODY.style;\n        if (!result && _IS_WEBKIT) {\n            const camelProp = 'Webkit' + prop.charAt(0).toUpperCase() + prop.slice(1);\n            result = camelProp in _CACHED_BODY.style;\n        }\n    }\n    return result;\n}\nfunction validateWebAnimatableStyleProperty(prop) {\n    return ANIMATABLE_PROP_SET.has(prop);\n}\nfunction getBodyNode() {\n    if (typeof document != 'undefined') {\n        return document.body;\n    }\n    return null;\n}\nconst containsElement = _contains;\nconst invokeQuery = _query;\nfunction hypenatePropsKeys(original) {\n    const newMap = new Map();\n    original.forEach((val, prop) => {\n        const newProp = prop.replace(/([a-z])([A-Z])/g, '$1-$2');\n        newMap.set(newProp, val);\n    });\n    return newMap;\n}\n\n/**\n * @publicApi\n */\nclass NoopAnimationDriver {\n    validateStyleProperty(prop) {\n        return validateStyleProperty(prop);\n    }\n    matchesElement(_element, _selector) {\n        // This method is deprecated and no longer in use so we return false.\n        return false;\n    }\n    containsElement(elm1, elm2) {\n        return containsElement(elm1, elm2);\n    }\n    getParentElement(element) {\n        return getParentElement(element);\n    }\n    query(element, selector, multi) {\n        return invokeQuery(element, selector, multi);\n    }\n    computeStyle(element, prop, defaultValue) {\n        return defaultValue || '';\n    }\n    animate(element, keyframes, duration, delay, easing, previousPlayers = [], scrubberAccessRequested) {\n        return new NoopAnimationPlayer(duration, delay);\n    }\n}\nNoopAnimationDriver.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: NoopAnimationDriver, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nNoopAnimationDriver.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: NoopAnimationDriver });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: NoopAnimationDriver, decorators: [{\n            type: Injectable\n        }] });\n/**\n * @publicApi\n */\nclass AnimationDriver {\n}\nAnimationDriver.NOOP = ( /* @__PURE__ */new NoopAnimationDriver());\n\nconst ONE_SECOND = 1000;\nconst SUBSTITUTION_EXPR_START = '{{';\nconst SUBSTITUTION_EXPR_END = '}}';\nconst ENTER_CLASSNAME = 'ng-enter';\nconst LEAVE_CLASSNAME = 'ng-leave';\nconst NG_TRIGGER_CLASSNAME = 'ng-trigger';\nconst NG_TRIGGER_SELECTOR = '.ng-trigger';\nconst NG_ANIMATING_CLASSNAME = 'ng-animating';\nconst NG_ANIMATING_SELECTOR = '.ng-animating';\nfunction resolveTimingValue(value) {\n    if (typeof value == 'number')\n        return value;\n    const matches = value.match(/^(-?[\\.\\d]+)(m?s)/);\n    if (!matches || matches.length < 2)\n        return 0;\n    return _convertTimeValueToMS(parseFloat(matches[1]), matches[2]);\n}\nfunction _convertTimeValueToMS(value, unit) {\n    switch (unit) {\n        case 's':\n            return value * ONE_SECOND;\n        default: // ms or something else\n            return value;\n    }\n}\nfunction resolveTiming(timings, errors, allowNegativeValues) {\n    return timings.hasOwnProperty('duration') ?\n        timings :\n        parseTimeExpression(timings, errors, allowNegativeValues);\n}\nfunction parseTimeExpression(exp, errors, allowNegativeValues) {\n    const regex = /^(-?[\\.\\d]+)(m?s)(?:\\s+(-?[\\.\\d]+)(m?s))?(?:\\s+([-a-z]+(?:\\(.+?\\))?))?$/i;\n    let duration;\n    let delay = 0;\n    let easing = '';\n    if (typeof exp === 'string') {\n        const matches = exp.match(regex);\n        if (matches === null) {\n            errors.push(invalidTimingValue(exp));\n            return { duration: 0, delay: 0, easing: '' };\n        }\n        duration = _convertTimeValueToMS(parseFloat(matches[1]), matches[2]);\n        const delayMatch = matches[3];\n        if (delayMatch != null) {\n            delay = _convertTimeValueToMS(parseFloat(delayMatch), matches[4]);\n        }\n        const easingVal = matches[5];\n        if (easingVal) {\n            easing = easingVal;\n        }\n    }\n    else {\n        duration = exp;\n    }\n    if (!allowNegativeValues) {\n        let containsErrors = false;\n        let startIndex = errors.length;\n        if (duration < 0) {\n            errors.push(negativeStepValue());\n            containsErrors = true;\n        }\n        if (delay < 0) {\n            errors.push(negativeDelayValue());\n            containsErrors = true;\n        }\n        if (containsErrors) {\n            errors.splice(startIndex, 0, invalidTimingValue(exp));\n        }\n    }\n    return { duration, delay, easing };\n}\nfunction copyObj(obj, destination = {}) {\n    Object.keys(obj).forEach(prop => {\n        destination[prop] = obj[prop];\n    });\n    return destination;\n}\nfunction convertToMap(obj) {\n    const styleMap = new Map();\n    Object.keys(obj).forEach(prop => {\n        const val = obj[prop];\n        styleMap.set(prop, val);\n    });\n    return styleMap;\n}\nfunction normalizeKeyframes(keyframes) {\n    if (!keyframes.length) {\n        return [];\n    }\n    if (keyframes[0] instanceof Map) {\n        return keyframes;\n    }\n    return keyframes.map(kf => convertToMap(kf));\n}\nfunction normalizeStyles(styles) {\n    const normalizedStyles = new Map();\n    if (Array.isArray(styles)) {\n        styles.forEach(data => copyStyles(data, normalizedStyles));\n    }\n    else {\n        copyStyles(styles, normalizedStyles);\n    }\n    return normalizedStyles;\n}\nfunction copyStyles(styles, destination = new Map(), backfill) {\n    if (backfill) {\n        for (let [prop, val] of backfill) {\n            destination.set(prop, val);\n        }\n    }\n    for (let [prop, val] of styles) {\n        destination.set(prop, val);\n    }\n    return destination;\n}\nfunction getStyleAttributeString(element, key, value) {\n    // Return the key-value pair string to be added to the style attribute for the\n    // given CSS style key.\n    if (value) {\n        return key + ':' + value + ';';\n    }\n    else {\n        return '';\n    }\n}\nfunction writeStyleAttribute(element) {\n    // Read the style property of the element and manually reflect it to the\n    // style attribute. This is needed because Domino on platform-server doesn't\n    // understand the full set of allowed CSS properties and doesn't reflect some\n    // of them automatically.\n    let styleAttrValue = '';\n    for (let i = 0; i < element.style.length; i++) {\n        const key = element.style.item(i);\n        styleAttrValue += getStyleAttributeString(element, key, element.style.getPropertyValue(key));\n    }\n    for (const key in element.style) {\n        // Skip internal Domino properties that don't need to be reflected.\n        if (!element.style.hasOwnProperty(key) || key.startsWith('_')) {\n            continue;\n        }\n        const dashKey = camelCaseToDashCase(key);\n        styleAttrValue += getStyleAttributeString(element, dashKey, element.style[key]);\n    }\n    element.setAttribute('style', styleAttrValue);\n}\nfunction setStyles(element, styles, formerStyles) {\n    if (element['style']) {\n        styles.forEach((val, prop) => {\n            const camelProp = dashCaseToCamelCase(prop);\n            if (formerStyles && !formerStyles.has(prop)) {\n                formerStyles.set(prop, element.style[camelProp]);\n            }\n            element.style[camelProp] = val;\n        });\n        // On the server set the 'style' attribute since it's not automatically reflected.\n        if (isNode()) {\n            writeStyleAttribute(element);\n        }\n    }\n}\nfunction eraseStyles(element, styles) {\n    if (element['style']) {\n        styles.forEach((_, prop) => {\n            const camelProp = dashCaseToCamelCase(prop);\n            element.style[camelProp] = '';\n        });\n        // On the server set the 'style' attribute since it's not automatically reflected.\n        if (isNode()) {\n            writeStyleAttribute(element);\n        }\n    }\n}\nfunction normalizeAnimationEntry(steps) {\n    if (Array.isArray(steps)) {\n        if (steps.length == 1)\n            return steps[0];\n        return sequence(steps);\n    }\n    return steps;\n}\nfunction validateStyleParams(value, options, errors) {\n    const params = options.params || {};\n    const matches = extractStyleParams(value);\n    if (matches.length) {\n        matches.forEach(varName => {\n            if (!params.hasOwnProperty(varName)) {\n                errors.push(invalidStyleParams(varName));\n            }\n        });\n    }\n}\nconst PARAM_REGEX = new RegExp(`${SUBSTITUTION_EXPR_START}\\\\s*(.+?)\\\\s*${SUBSTITUTION_EXPR_END}`, 'g');\nfunction extractStyleParams(value) {\n    let params = [];\n    if (typeof value === 'string') {\n        let match;\n        while (match = PARAM_REGEX.exec(value)) {\n            params.push(match[1]);\n        }\n        PARAM_REGEX.lastIndex = 0;\n    }\n    return params;\n}\nfunction interpolateParams(value, params, errors) {\n    const original = value.toString();\n    const str = original.replace(PARAM_REGEX, (_, varName) => {\n        let localVal = params[varName];\n        // this means that the value was never overridden by the data passed in by the user\n        if (localVal == null) {\n            errors.push(invalidParamValue(varName));\n            localVal = '';\n        }\n        return localVal.toString();\n    });\n    // we do this to assert that numeric values stay as they are\n    return str == original ? value : str;\n}\nfunction iteratorToArray(iterator) {\n    const arr = [];\n    let item = iterator.next();\n    while (!item.done) {\n        arr.push(item.value);\n        item = iterator.next();\n    }\n    return arr;\n}\nconst DASH_CASE_REGEXP = /-+([a-z0-9])/g;\nfunction dashCaseToCamelCase(input) {\n    return input.replace(DASH_CASE_REGEXP, (...m) => m[1].toUpperCase());\n}\nfunction camelCaseToDashCase(input) {\n    return input.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();\n}\nfunction allowPreviousPlayerStylesMerge(duration, delay) {\n    return duration === 0 || delay === 0;\n}\nfunction balancePreviousStylesIntoKeyframes(element, keyframes, previousStyles) {\n    if (previousStyles.size && keyframes.length) {\n        let startingKeyframe = keyframes[0];\n        let missingStyleProps = [];\n        previousStyles.forEach((val, prop) => {\n            if (!startingKeyframe.has(prop)) {\n                missingStyleProps.push(prop);\n            }\n            startingKeyframe.set(prop, val);\n        });\n        if (missingStyleProps.length) {\n            for (let i = 1; i < keyframes.length; i++) {\n                let kf = keyframes[i];\n                missingStyleProps.forEach(prop => kf.set(prop, computeStyle(element, prop)));\n            }\n        }\n    }\n    return keyframes;\n}\nfunction visitDslNode(visitor, node, context) {\n    switch (node.type) {\n        case 7 /* AnimationMetadataType.Trigger */:\n            return visitor.visitTrigger(node, context);\n        case 0 /* AnimationMetadataType.State */:\n            return visitor.visitState(node, context);\n        case 1 /* AnimationMetadataType.Transition */:\n            return visitor.visitTransition(node, context);\n        case 2 /* AnimationMetadataType.Sequence */:\n            return visitor.visitSequence(node, context);\n        case 3 /* AnimationMetadataType.Group */:\n            return visitor.visitGroup(node, context);\n        case 4 /* AnimationMetadataType.Animate */:\n            return visitor.visitAnimate(node, context);\n        case 5 /* AnimationMetadataType.Keyframes */:\n            return visitor.visitKeyframes(node, context);\n        case 6 /* AnimationMetadataType.Style */:\n            return visitor.visitStyle(node, context);\n        case 8 /* AnimationMetadataType.Reference */:\n            return visitor.visitReference(node, context);\n        case 9 /* AnimationMetadataType.AnimateChild */:\n            return visitor.visitAnimateChild(node, context);\n        case 10 /* AnimationMetadataType.AnimateRef */:\n            return visitor.visitAnimateRef(node, context);\n        case 11 /* AnimationMetadataType.Query */:\n            return visitor.visitQuery(node, context);\n        case 12 /* AnimationMetadataType.Stagger */:\n            return visitor.visitStagger(node, context);\n        default:\n            throw invalidNodeType(node.type);\n    }\n}\nfunction computeStyle(element, prop) {\n    return window.getComputedStyle(element)[prop];\n}\n\nconst NG_DEV_MODE = typeof ngDevMode === 'undefined' || !!ngDevMode;\nfunction createListOfWarnings(warnings) {\n    const LINE_START = '\\n - ';\n    return `${LINE_START}${warnings.filter(Boolean).map(warning => warning).join(LINE_START)}`;\n}\nfunction warnValidation(warnings) {\n    NG_DEV_MODE && console.warn(`animation validation warnings:${createListOfWarnings(warnings)}`);\n}\nfunction warnTriggerBuild(name, warnings) {\n    NG_DEV_MODE &&\n        console.warn(`The animation trigger \"${name}\" has built with the following warnings:${createListOfWarnings(warnings)}`);\n}\nfunction warnRegister(warnings) {\n    NG_DEV_MODE &&\n        console.warn(`Animation built with the following warnings:${createListOfWarnings(warnings)}`);\n}\nfunction triggerParsingWarnings(name, warnings) {\n    NG_DEV_MODE &&\n        console.warn(`Animation parsing for the ${name} trigger presents the following warnings:${createListOfWarnings(warnings)}`);\n}\nfunction pushUnrecognizedPropertiesWarning(warnings, props) {\n    if (props.length) {\n        warnings.push(`The following provided properties are not recognized: ${props.join(', ')}`);\n    }\n}\n\nconst ANY_STATE = '*';\nfunction parseTransitionExpr(transitionValue, errors) {\n    const expressions = [];\n    if (typeof transitionValue == 'string') {\n        transitionValue.split(/\\s*,\\s*/).forEach(str => parseInnerTransitionStr(str, expressions, errors));\n    }\n    else {\n        expressions.push(transitionValue);\n    }\n    return expressions;\n}\nfunction parseInnerTransitionStr(eventStr, expressions, errors) {\n    if (eventStr[0] == ':') {\n        const result = parseAnimationAlias(eventStr, errors);\n        if (typeof result == 'function') {\n            expressions.push(result);\n            return;\n        }\n        eventStr = result;\n    }\n    const match = eventStr.match(/^(\\*|[-\\w]+)\\s*(<?[=-]>)\\s*(\\*|[-\\w]+)$/);\n    if (match == null || match.length < 4) {\n        errors.push(invalidExpression(eventStr));\n        return expressions;\n    }\n    const fromState = match[1];\n    const separator = match[2];\n    const toState = match[3];\n    expressions.push(makeLambdaFromStates(fromState, toState));\n    const isFullAnyStateExpr = fromState == ANY_STATE && toState == ANY_STATE;\n    if (separator[0] == '<' && !isFullAnyStateExpr) {\n        expressions.push(makeLambdaFromStates(toState, fromState));\n    }\n}\nfunction parseAnimationAlias(alias, errors) {\n    switch (alias) {\n        case ':enter':\n            return 'void => *';\n        case ':leave':\n            return '* => void';\n        case ':increment':\n            return (fromState, toState) => parseFloat(toState) > parseFloat(fromState);\n        case ':decrement':\n            return (fromState, toState) => parseFloat(toState) < parseFloat(fromState);\n        default:\n            errors.push(invalidTransitionAlias(alias));\n            return '* => *';\n    }\n}\n// DO NOT REFACTOR ... keep the follow set instantiations\n// with the values intact (closure compiler for some reason\n// removes follow-up lines that add the values outside of\n// the constructor...\nconst TRUE_BOOLEAN_VALUES = new Set(['true', '1']);\nconst FALSE_BOOLEAN_VALUES = new Set(['false', '0']);\nfunction makeLambdaFromStates(lhs, rhs) {\n    const LHS_MATCH_BOOLEAN = TRUE_BOOLEAN_VALUES.has(lhs) || FALSE_BOOLEAN_VALUES.has(lhs);\n    const RHS_MATCH_BOOLEAN = TRUE_BOOLEAN_VALUES.has(rhs) || FALSE_BOOLEAN_VALUES.has(rhs);\n    return (fromState, toState) => {\n        let lhsMatch = lhs == ANY_STATE || lhs == fromState;\n        let rhsMatch = rhs == ANY_STATE || rhs == toState;\n        if (!lhsMatch && LHS_MATCH_BOOLEAN && typeof fromState === 'boolean') {\n            lhsMatch = fromState ? TRUE_BOOLEAN_VALUES.has(lhs) : FALSE_BOOLEAN_VALUES.has(lhs);\n        }\n        if (!rhsMatch && RHS_MATCH_BOOLEAN && typeof toState === 'boolean') {\n            rhsMatch = toState ? TRUE_BOOLEAN_VALUES.has(rhs) : FALSE_BOOLEAN_VALUES.has(rhs);\n        }\n        return lhsMatch && rhsMatch;\n    };\n}\n\nconst SELF_TOKEN = ':self';\nconst SELF_TOKEN_REGEX = new RegExp(`\\s*${SELF_TOKEN}\\s*,?`, 'g');\n/*\n * [Validation]\n * The visitor code below will traverse the animation AST generated by the animation verb functions\n * (the output is a tree of objects) and attempt to perform a series of validations on the data. The\n * following corner-cases will be validated:\n *\n * 1. Overlap of animations\n * Given that a CSS property cannot be animated in more than one place at the same time, it's\n * important that this behavior is detected and validated. The way in which this occurs is that\n * each time a style property is examined, a string-map containing the property will be updated with\n * the start and end times for when the property is used within an animation step.\n *\n * If there are two or more parallel animations that are currently running (these are invoked by the\n * group()) on the same element then the validator will throw an error. Since the start/end timing\n * values are collected for each property then if the current animation step is animating the same\n * property and its timing values fall anywhere into the window of time that the property is\n * currently being animated within then this is what causes an error.\n *\n * 2. Timing values\n * The validator will validate to see if a timing value of `duration delay easing` or\n * `durationNumber` is valid or not.\n *\n * (note that upon validation the code below will replace the timing data with an object containing\n * {duration,delay,easing}.\n *\n * 3. Offset Validation\n * Each of the style() calls are allowed to have an offset value when placed inside of keyframes().\n * Offsets within keyframes() are considered valid when:\n *\n *   - No offsets are used at all\n *   - Each style() entry contains an offset value\n *   - Each offset is between 0 and 1\n *   - Each offset is greater to or equal than the previous one\n *\n * Otherwise an error will be thrown.\n */\nfunction buildAnimationAst(driver, metadata, errors, warnings) {\n    return new AnimationAstBuilderVisitor(driver).build(metadata, errors, warnings);\n}\nconst ROOT_SELECTOR = '';\nclass AnimationAstBuilderVisitor {\n    constructor(_driver) {\n        this._driver = _driver;\n    }\n    build(metadata, errors, warnings) {\n        const context = new AnimationAstBuilderContext(errors);\n        this._resetContextStyleTimingState(context);\n        const ast = visitDslNode(this, normalizeAnimationEntry(metadata), context);\n        if (typeof ngDevMode === 'undefined' || ngDevMode) {\n            if (context.unsupportedCSSPropertiesFound.size) {\n                pushUnrecognizedPropertiesWarning(warnings, [...context.unsupportedCSSPropertiesFound.keys()]);\n            }\n        }\n        return ast;\n    }\n    _resetContextStyleTimingState(context) {\n        context.currentQuerySelector = ROOT_SELECTOR;\n        context.collectedStyles = new Map();\n        context.collectedStyles.set(ROOT_SELECTOR, new Map());\n        context.currentTime = 0;\n    }\n    visitTrigger(metadata, context) {\n        let queryCount = context.queryCount = 0;\n        let depCount = context.depCount = 0;\n        const states = [];\n        const transitions = [];\n        if (metadata.name.charAt(0) == '@') {\n            context.errors.push(invalidTrigger());\n        }\n        metadata.definitions.forEach(def => {\n            this._resetContextStyleTimingState(context);\n            if (def.type == 0 /* AnimationMetadataType.State */) {\n                const stateDef = def;\n                const name = stateDef.name;\n                name.toString().split(/\\s*,\\s*/).forEach(n => {\n                    stateDef.name = n;\n                    states.push(this.visitState(stateDef, context));\n                });\n                stateDef.name = name;\n            }\n            else if (def.type == 1 /* AnimationMetadataType.Transition */) {\n                const transition = this.visitTransition(def, context);\n                queryCount += transition.queryCount;\n                depCount += transition.depCount;\n                transitions.push(transition);\n            }\n            else {\n                context.errors.push(invalidDefinition());\n            }\n        });\n        return {\n            type: 7 /* AnimationMetadataType.Trigger */,\n            name: metadata.name,\n            states,\n            transitions,\n            queryCount,\n            depCount,\n            options: null\n        };\n    }\n    visitState(metadata, context) {\n        const styleAst = this.visitStyle(metadata.styles, context);\n        const astParams = (metadata.options && metadata.options.params) || null;\n        if (styleAst.containsDynamicStyles) {\n            const missingSubs = new Set();\n            const params = astParams || {};\n            styleAst.styles.forEach(style => {\n                if (style instanceof Map) {\n                    style.forEach(value => {\n                        extractStyleParams(value).forEach(sub => {\n                            if (!params.hasOwnProperty(sub)) {\n                                missingSubs.add(sub);\n                            }\n                        });\n                    });\n                }\n            });\n            if (missingSubs.size) {\n                const missingSubsArr = iteratorToArray(missingSubs.values());\n                context.errors.push(invalidState(metadata.name, missingSubsArr));\n            }\n        }\n        return {\n            type: 0 /* AnimationMetadataType.State */,\n            name: metadata.name,\n            style: styleAst,\n            options: astParams ? { params: astParams } : null\n        };\n    }\n    visitTransition(metadata, context) {\n        context.queryCount = 0;\n        context.depCount = 0;\n        const animation = visitDslNode(this, normalizeAnimationEntry(metadata.animation), context);\n        const matchers = parseTransitionExpr(metadata.expr, context.errors);\n        return {\n            type: 1 /* AnimationMetadataType.Transition */,\n            matchers,\n            animation,\n            queryCount: context.queryCount,\n            depCount: context.depCount,\n            options: normalizeAnimationOptions(metadata.options)\n        };\n    }\n    visitSequence(metadata, context) {\n        return {\n            type: 2 /* AnimationMetadataType.Sequence */,\n            steps: metadata.steps.map(s => visitDslNode(this, s, context)),\n            options: normalizeAnimationOptions(metadata.options)\n        };\n    }\n    visitGroup(metadata, context) {\n        const currentTime = context.currentTime;\n        let furthestTime = 0;\n        const steps = metadata.steps.map(step => {\n            context.currentTime = currentTime;\n            const innerAst = visitDslNode(this, step, context);\n            furthestTime = Math.max(furthestTime, context.currentTime);\n            return innerAst;\n        });\n        context.currentTime = furthestTime;\n        return {\n            type: 3 /* AnimationMetadataType.Group */,\n            steps,\n            options: normalizeAnimationOptions(metadata.options)\n        };\n    }\n    visitAnimate(metadata, context) {\n        const timingAst = constructTimingAst(metadata.timings, context.errors);\n        context.currentAnimateTimings = timingAst;\n        let styleAst;\n        let styleMetadata = metadata.styles ? metadata.styles : style({});\n        if (styleMetadata.type == 5 /* AnimationMetadataType.Keyframes */) {\n            styleAst = this.visitKeyframes(styleMetadata, context);\n        }\n        else {\n            let styleMetadata = metadata.styles;\n            let isEmpty = false;\n            if (!styleMetadata) {\n                isEmpty = true;\n                const newStyleData = {};\n                if (timingAst.easing) {\n                    newStyleData['easing'] = timingAst.easing;\n                }\n                styleMetadata = style(newStyleData);\n            }\n            context.currentTime += timingAst.duration + timingAst.delay;\n            const _styleAst = this.visitStyle(styleMetadata, context);\n            _styleAst.isEmptyStep = isEmpty;\n            styleAst = _styleAst;\n        }\n        context.currentAnimateTimings = null;\n        return {\n            type: 4 /* AnimationMetadataType.Animate */,\n            timings: timingAst,\n            style: styleAst,\n            options: null\n        };\n    }\n    visitStyle(metadata, context) {\n        const ast = this._makeStyleAst(metadata, context);\n        this._validateStyleAst(ast, context);\n        return ast;\n    }\n    _makeStyleAst(metadata, context) {\n        const styles = [];\n        const metadataStyles = Array.isArray(metadata.styles) ? metadata.styles : [metadata.styles];\n        for (let styleTuple of metadataStyles) {\n            if (typeof styleTuple === 'string') {\n                if (styleTuple === AUTO_STYLE) {\n                    styles.push(styleTuple);\n                }\n                else {\n                    context.errors.push(invalidStyleValue(styleTuple));\n                }\n            }\n            else {\n                styles.push(convertToMap(styleTuple));\n            }\n        }\n        let containsDynamicStyles = false;\n        let collectedEasing = null;\n        styles.forEach(styleData => {\n            if (styleData instanceof Map) {\n                if (styleData.has('easing')) {\n                    collectedEasing = styleData.get('easing');\n                    styleData.delete('easing');\n                }\n                if (!containsDynamicStyles) {\n                    for (let value of styleData.values()) {\n                        if (value.toString().indexOf(SUBSTITUTION_EXPR_START) >= 0) {\n                            containsDynamicStyles = true;\n                            break;\n                        }\n                    }\n                }\n            }\n        });\n        return {\n            type: 6 /* AnimationMetadataType.Style */,\n            styles,\n            easing: collectedEasing,\n            offset: metadata.offset,\n            containsDynamicStyles,\n            options: null\n        };\n    }\n    _validateStyleAst(ast, context) {\n        const timings = context.currentAnimateTimings;\n        let endTime = context.currentTime;\n        let startTime = context.currentTime;\n        if (timings && startTime > 0) {\n            startTime -= timings.duration + timings.delay;\n        }\n        ast.styles.forEach(tuple => {\n            if (typeof tuple === 'string')\n                return;\n            tuple.forEach((value, prop) => {\n                if (typeof ngDevMode === 'undefined' || ngDevMode) {\n                    if (!this._driver.validateStyleProperty(prop)) {\n                        tuple.delete(prop);\n                        context.unsupportedCSSPropertiesFound.add(prop);\n                        return;\n                    }\n                }\n                // This is guaranteed to have a defined Map at this querySelector location making it\n                // safe to add the assertion here. It is set as a default empty map in prior methods.\n                const collectedStyles = context.collectedStyles.get(context.currentQuerySelector);\n                const collectedEntry = collectedStyles.get(prop);\n                let updateCollectedStyle = true;\n                if (collectedEntry) {\n                    if (startTime != endTime && startTime >= collectedEntry.startTime &&\n                        endTime <= collectedEntry.endTime) {\n                        context.errors.push(invalidParallelAnimation(prop, collectedEntry.startTime, collectedEntry.endTime, startTime, endTime));\n                        updateCollectedStyle = false;\n                    }\n                    // we always choose the smaller start time value since we\n                    // want to have a record of the entire animation window where\n                    // the style property is being animated in between\n                    startTime = collectedEntry.startTime;\n                }\n                if (updateCollectedStyle) {\n                    collectedStyles.set(prop, { startTime, endTime });\n                }\n                if (context.options) {\n                    validateStyleParams(value, context.options, context.errors);\n                }\n            });\n        });\n    }\n    visitKeyframes(metadata, context) {\n        const ast = { type: 5 /* AnimationMetadataType.Keyframes */, styles: [], options: null };\n        if (!context.currentAnimateTimings) {\n            context.errors.push(invalidKeyframes());\n            return ast;\n        }\n        const MAX_KEYFRAME_OFFSET = 1;\n        let totalKeyframesWithOffsets = 0;\n        const offsets = [];\n        let offsetsOutOfOrder = false;\n        let keyframesOutOfRange = false;\n        let previousOffset = 0;\n        const keyframes = metadata.steps.map(styles => {\n            const style = this._makeStyleAst(styles, context);\n            let offsetVal = style.offset != null ? style.offset : consumeOffset(style.styles);\n            let offset = 0;\n            if (offsetVal != null) {\n                totalKeyframesWithOffsets++;\n                offset = style.offset = offsetVal;\n            }\n            keyframesOutOfRange = keyframesOutOfRange || offset < 0 || offset > 1;\n            offsetsOutOfOrder = offsetsOutOfOrder || offset < previousOffset;\n            previousOffset = offset;\n            offsets.push(offset);\n            return style;\n        });\n        if (keyframesOutOfRange) {\n            context.errors.push(invalidOffset());\n        }\n        if (offsetsOutOfOrder) {\n            context.errors.push(keyframeOffsetsOutOfOrder());\n        }\n        const length = metadata.steps.length;\n        let generatedOffset = 0;\n        if (totalKeyframesWithOffsets > 0 && totalKeyframesWithOffsets < length) {\n            context.errors.push(keyframesMissingOffsets());\n        }\n        else if (totalKeyframesWithOffsets == 0) {\n            generatedOffset = MAX_KEYFRAME_OFFSET / (length - 1);\n        }\n        const limit = length - 1;\n        const currentTime = context.currentTime;\n        const currentAnimateTimings = context.currentAnimateTimings;\n        const animateDuration = currentAnimateTimings.duration;\n        keyframes.forEach((kf, i) => {\n            const offset = generatedOffset > 0 ? (i == limit ? 1 : (generatedOffset * i)) : offsets[i];\n            const durationUpToThisFrame = offset * animateDuration;\n            context.currentTime = currentTime + currentAnimateTimings.delay + durationUpToThisFrame;\n            currentAnimateTimings.duration = durationUpToThisFrame;\n            this._validateStyleAst(kf, context);\n            kf.offset = offset;\n            ast.styles.push(kf);\n        });\n        return ast;\n    }\n    visitReference(metadata, context) {\n        return {\n            type: 8 /* AnimationMetadataType.Reference */,\n            animation: visitDslNode(this, normalizeAnimationEntry(metadata.animation), context),\n            options: normalizeAnimationOptions(metadata.options)\n        };\n    }\n    visitAnimateChild(metadata, context) {\n        context.depCount++;\n        return {\n            type: 9 /* AnimationMetadataType.AnimateChild */,\n            options: normalizeAnimationOptions(metadata.options)\n        };\n    }\n    visitAnimateRef(metadata, context) {\n        return {\n            type: 10 /* AnimationMetadataType.AnimateRef */,\n            animation: this.visitReference(metadata.animation, context),\n            options: normalizeAnimationOptions(metadata.options)\n        };\n    }\n    visitQuery(metadata, context) {\n        const parentSelector = context.currentQuerySelector;\n        const options = (metadata.options || {});\n        context.queryCount++;\n        context.currentQuery = metadata;\n        const [selector, includeSelf] = normalizeSelector(metadata.selector);\n        context.currentQuerySelector =\n            parentSelector.length ? (parentSelector + ' ' + selector) : selector;\n        getOrSetDefaultValue(context.collectedStyles, context.currentQuerySelector, new Map());\n        const animation = visitDslNode(this, normalizeAnimationEntry(metadata.animation), context);\n        context.currentQuery = null;\n        context.currentQuerySelector = parentSelector;\n        return {\n            type: 11 /* AnimationMetadataType.Query */,\n            selector,\n            limit: options.limit || 0,\n            optional: !!options.optional,\n            includeSelf,\n            animation,\n            originalSelector: metadata.selector,\n            options: normalizeAnimationOptions(metadata.options)\n        };\n    }\n    visitStagger(metadata, context) {\n        if (!context.currentQuery) {\n            context.errors.push(invalidStagger());\n        }\n        const timings = metadata.timings === 'full' ?\n            { duration: 0, delay: 0, easing: 'full' } :\n            resolveTiming(metadata.timings, context.errors, true);\n        return {\n            type: 12 /* AnimationMetadataType.Stagger */,\n            animation: visitDslNode(this, normalizeAnimationEntry(metadata.animation), context),\n            timings,\n            options: null\n        };\n    }\n}\nfunction normalizeSelector(selector) {\n    const hasAmpersand = selector.split(/\\s*,\\s*/).find(token => token == SELF_TOKEN) ? true : false;\n    if (hasAmpersand) {\n        selector = selector.replace(SELF_TOKEN_REGEX, '');\n    }\n    // Note: the :enter and :leave aren't normalized here since those\n    // selectors are filled in at runtime during timeline building\n    selector = selector.replace(/@\\*/g, NG_TRIGGER_SELECTOR)\n        .replace(/@\\w+/g, match => NG_TRIGGER_SELECTOR + '-' + match.slice(1))\n        .replace(/:animating/g, NG_ANIMATING_SELECTOR);\n    return [selector, hasAmpersand];\n}\nfunction normalizeParams(obj) {\n    return obj ? copyObj(obj) : null;\n}\nclass AnimationAstBuilderContext {\n    constructor(errors) {\n        this.errors = errors;\n        this.queryCount = 0;\n        this.depCount = 0;\n        this.currentTransition = null;\n        this.currentQuery = null;\n        this.currentQuerySelector = null;\n        this.currentAnimateTimings = null;\n        this.currentTime = 0;\n        this.collectedStyles = new Map();\n        this.options = null;\n        this.unsupportedCSSPropertiesFound = new Set();\n    }\n}\nfunction consumeOffset(styles) {\n    if (typeof styles == 'string')\n        return null;\n    let offset = null;\n    if (Array.isArray(styles)) {\n        styles.forEach(styleTuple => {\n            if (styleTuple instanceof Map && styleTuple.has('offset')) {\n                const obj = styleTuple;\n                offset = parseFloat(obj.get('offset'));\n                obj.delete('offset');\n            }\n        });\n    }\n    else if (styles instanceof Map && styles.has('offset')) {\n        const obj = styles;\n        offset = parseFloat(obj.get('offset'));\n        obj.delete('offset');\n    }\n    return offset;\n}\nfunction constructTimingAst(value, errors) {\n    if (value.hasOwnProperty('duration')) {\n        return value;\n    }\n    if (typeof value == 'number') {\n        const duration = resolveTiming(value, errors).duration;\n        return makeTimingAst(duration, 0, '');\n    }\n    const strValue = value;\n    const isDynamic = strValue.split(/\\s+/).some(v => v.charAt(0) == '{' && v.charAt(1) == '{');\n    if (isDynamic) {\n        const ast = makeTimingAst(0, 0, '');\n        ast.dynamic = true;\n        ast.strValue = strValue;\n        return ast;\n    }\n    const timings = resolveTiming(strValue, errors);\n    return makeTimingAst(timings.duration, timings.delay, timings.easing);\n}\nfunction normalizeAnimationOptions(options) {\n    if (options) {\n        options = copyObj(options);\n        if (options['params']) {\n            options['params'] = normalizeParams(options['params']);\n        }\n    }\n    else {\n        options = {};\n    }\n    return options;\n}\nfunction makeTimingAst(duration, delay, easing) {\n    return { duration, delay, easing };\n}\n\nfunction createTimelineInstruction(element, keyframes, preStyleProps, postStyleProps, duration, delay, easing = null, subTimeline = false) {\n    return {\n        type: 1 /* AnimationTransitionInstructionType.TimelineAnimation */,\n        element,\n        keyframes,\n        preStyleProps,\n        postStyleProps,\n        duration,\n        delay,\n        totalTime: duration + delay,\n        easing,\n        subTimeline\n    };\n}\n\nclass ElementInstructionMap {\n    constructor() {\n        this._map = new Map();\n    }\n    get(element) {\n        return this._map.get(element) || [];\n    }\n    append(element, instructions) {\n        let existingInstructions = this._map.get(element);\n        if (!existingInstructions) {\n            this._map.set(element, existingInstructions = []);\n        }\n        existingInstructions.push(...instructions);\n    }\n    has(element) {\n        return this._map.has(element);\n    }\n    clear() {\n        this._map.clear();\n    }\n}\n\nconst ONE_FRAME_IN_MILLISECONDS = 1;\nconst ENTER_TOKEN = ':enter';\nconst ENTER_TOKEN_REGEX = new RegExp(ENTER_TOKEN, 'g');\nconst LEAVE_TOKEN = ':leave';\nconst LEAVE_TOKEN_REGEX = new RegExp(LEAVE_TOKEN, 'g');\n/*\n * The code within this file aims to generate web-animations-compatible keyframes from Angular's\n * animation DSL code.\n *\n * The code below will be converted from:\n *\n * ```\n * sequence([\n *   style({ opacity: 0 }),\n *   animate(1000, style({ opacity: 0 }))\n * ])\n * ```\n *\n * To:\n * ```\n * keyframes = [{ opacity: 0, offset: 0 }, { opacity: 1, offset: 1 }]\n * duration = 1000\n * delay = 0\n * easing = ''\n * ```\n *\n * For this operation to cover the combination of animation verbs (style, animate, group, etc...) a\n * combination of AST traversal and merge-sort-like algorithms are used.\n *\n * [AST Traversal]\n * Each of the animation verbs, when executed, will return an string-map object representing what\n * type of action it is (style, animate, group, etc...) and the data associated with it. This means\n * that when functional composition mix of these functions is evaluated (like in the example above)\n * then it will end up producing a tree of objects representing the animation itself.\n *\n * When this animation object tree is processed by the visitor code below it will visit each of the\n * verb statements within the visitor. And during each visit it will build the context of the\n * animation keyframes by interacting with the `TimelineBuilder`.\n *\n * [TimelineBuilder]\n * This class is responsible for tracking the styles and building a series of keyframe objects for a\n * timeline between a start and end time. The builder starts off with an initial timeline and each\n * time the AST comes across a `group()`, `keyframes()` or a combination of the two within a\n * `sequence()` then it will generate a sub timeline for each step as well as a new one after\n * they are complete.\n *\n * As the AST is traversed, the timing state on each of the timelines will be incremented. If a sub\n * timeline was created (based on one of the cases above) then the parent timeline will attempt to\n * merge the styles used within the sub timelines into itself (only with group() this will happen).\n * This happens with a merge operation (much like how the merge works in mergeSort) and it will only\n * copy the most recently used styles from the sub timelines into the parent timeline. This ensures\n * that if the styles are used later on in another phase of the animation then they will be the most\n * up-to-date values.\n *\n * [How Missing Styles Are Updated]\n * Each timeline has a `backFill` property which is responsible for filling in new styles into\n * already processed keyframes if a new style shows up later within the animation sequence.\n *\n * ```\n * sequence([\n *   style({ width: 0 }),\n *   animate(1000, style({ width: 100 })),\n *   animate(1000, style({ width: 200 })),\n *   animate(1000, style({ width: 300 }))\n *   animate(1000, style({ width: 400, height: 400 })) // notice how `height` doesn't exist anywhere\n * else\n * ])\n * ```\n *\n * What is happening here is that the `height` value is added later in the sequence, but is missing\n * from all previous animation steps. Therefore when a keyframe is created it would also be missing\n * from all previous keyframes up until where it is first used. For the timeline keyframe generation\n * to properly fill in the style it will place the previous value (the value from the parent\n * timeline) or a default value of `*` into the backFill map. The `copyStyles` method in util.ts\n * handles propagating that backfill map to the styles object.\n *\n * When a sub-timeline is created it will have its own backFill property. This is done so that\n * styles present within the sub-timeline do not accidentally seep into the previous/future timeline\n * keyframes\n *\n * [Validation]\n * The code in this file is not responsible for validation. That functionality happens with within\n * the `AnimationValidatorVisitor` code.\n */\nfunction buildAnimationTimelines(driver, rootElement, ast, enterClassName, leaveClassName, startingStyles = new Map(), finalStyles = new Map(), options, subInstructions, errors = []) {\n    return new AnimationTimelineBuilderVisitor().buildKeyframes(driver, rootElement, ast, enterClassName, leaveClassName, startingStyles, finalStyles, options, subInstructions, errors);\n}\nclass AnimationTimelineBuilderVisitor {\n    buildKeyframes(driver, rootElement, ast, enterClassName, leaveClassName, startingStyles, finalStyles, options, subInstructions, errors = []) {\n        subInstructions = subInstructions || new ElementInstructionMap();\n        const context = new AnimationTimelineContext(driver, rootElement, subInstructions, enterClassName, leaveClassName, errors, []);\n        context.options = options;\n        const delay = options.delay ? resolveTimingValue(options.delay) : 0;\n        context.currentTimeline.delayNextStep(delay);\n        context.currentTimeline.setStyles([startingStyles], null, context.errors, options);\n        visitDslNode(this, ast, context);\n        // this checks to see if an actual animation happened\n        const timelines = context.timelines.filter(timeline => timeline.containsAnimation());\n        // note: we just want to apply the final styles for the rootElement, so we do not\n        //       just apply the styles to the last timeline but the last timeline which\n        //       element is the root one (basically `*`-styles are replaced with the actual\n        //       state style values only for the root element)\n        if (timelines.length && finalStyles.size) {\n            let lastRootTimeline;\n            for (let i = timelines.length - 1; i >= 0; i--) {\n                const timeline = timelines[i];\n                if (timeline.element === rootElement) {\n                    lastRootTimeline = timeline;\n                    break;\n                }\n            }\n            if (lastRootTimeline && !lastRootTimeline.allowOnlyTimelineStyles()) {\n                lastRootTimeline.setStyles([finalStyles], null, context.errors, options);\n            }\n        }\n        return timelines.length ?\n            timelines.map(timeline => timeline.buildKeyframes()) :\n            [createTimelineInstruction(rootElement, [], [], [], 0, delay, '', false)];\n    }\n    visitTrigger(ast, context) {\n        // these values are not visited in this AST\n    }\n    visitState(ast, context) {\n        // these values are not visited in this AST\n    }\n    visitTransition(ast, context) {\n        // these values are not visited in this AST\n    }\n    visitAnimateChild(ast, context) {\n        const elementInstructions = context.subInstructions.get(context.element);\n        if (elementInstructions) {\n            const innerContext = context.createSubContext(ast.options);\n            const startTime = context.currentTimeline.currentTime;\n            const endTime = this._visitSubInstructions(elementInstructions, innerContext, innerContext.options);\n            if (startTime != endTime) {\n                // we do this on the upper context because we created a sub context for\n                // the sub child animations\n                context.transformIntoNewTimeline(endTime);\n            }\n        }\n        context.previousNode = ast;\n    }\n    visitAnimateRef(ast, context) {\n        const innerContext = context.createSubContext(ast.options);\n        innerContext.transformIntoNewTimeline();\n        this._applyAnimationRefDelays([ast.options, ast.animation.options], context, innerContext);\n        this.visitReference(ast.animation, innerContext);\n        context.transformIntoNewTimeline(innerContext.currentTimeline.currentTime);\n        context.previousNode = ast;\n    }\n    _applyAnimationRefDelays(animationsRefsOptions, context, innerContext) {\n        for (const animationRefOptions of animationsRefsOptions) {\n            const animationDelay = animationRefOptions?.delay;\n            if (animationDelay) {\n                const animationDelayValue = typeof animationDelay === 'number' ?\n                    animationDelay :\n                    resolveTimingValue(interpolateParams(animationDelay, animationRefOptions?.params ?? {}, context.errors));\n                innerContext.delayNextStep(animationDelayValue);\n            }\n        }\n    }\n    _visitSubInstructions(instructions, context, options) {\n        const startTime = context.currentTimeline.currentTime;\n        let furthestTime = startTime;\n        // this is a special-case for when a user wants to skip a sub\n        // animation from being fired entirely.\n        const duration = options.duration != null ? resolveTimingValue(options.duration) : null;\n        const delay = options.delay != null ? resolveTimingValue(options.delay) : null;\n        if (duration !== 0) {\n            instructions.forEach(instruction => {\n                const instructionTimings = context.appendInstructionToTimeline(instruction, duration, delay);\n                furthestTime =\n                    Math.max(furthestTime, instructionTimings.duration + instructionTimings.delay);\n            });\n        }\n        return furthestTime;\n    }\n    visitReference(ast, context) {\n        context.updateOptions(ast.options, true);\n        visitDslNode(this, ast.animation, context);\n        context.previousNode = ast;\n    }\n    visitSequence(ast, context) {\n        const subContextCount = context.subContextCount;\n        let ctx = context;\n        const options = ast.options;\n        if (options && (options.params || options.delay)) {\n            ctx = context.createSubContext(options);\n            ctx.transformIntoNewTimeline();\n            if (options.delay != null) {\n                if (ctx.previousNode.type == 6 /* AnimationMetadataType.Style */) {\n                    ctx.currentTimeline.snapshotCurrentStyles();\n                    ctx.previousNode = DEFAULT_NOOP_PREVIOUS_NODE;\n                }\n                const delay = resolveTimingValue(options.delay);\n                ctx.delayNextStep(delay);\n            }\n        }\n        if (ast.steps.length) {\n            ast.steps.forEach(s => visitDslNode(this, s, ctx));\n            // this is here just in case the inner steps only contain or end with a style() call\n            ctx.currentTimeline.applyStylesToKeyframe();\n            // this means that some animation function within the sequence\n            // ended up creating a sub timeline (which means the current\n            // timeline cannot overlap with the contents of the sequence)\n            if (ctx.subContextCount > subContextCount) {\n                ctx.transformIntoNewTimeline();\n            }\n        }\n        context.previousNode = ast;\n    }\n    visitGroup(ast, context) {\n        const innerTimelines = [];\n        let furthestTime = context.currentTimeline.currentTime;\n        const delay = ast.options && ast.options.delay ? resolveTimingValue(ast.options.delay) : 0;\n        ast.steps.forEach(s => {\n            const innerContext = context.createSubContext(ast.options);\n            if (delay) {\n                innerContext.delayNextStep(delay);\n            }\n            visitDslNode(this, s, innerContext);\n            furthestTime = Math.max(furthestTime, innerContext.currentTimeline.currentTime);\n            innerTimelines.push(innerContext.currentTimeline);\n        });\n        // this operation is run after the AST loop because otherwise\n        // if the parent timeline's collected styles were updated then\n        // it would pass in invalid data into the new-to-be forked items\n        innerTimelines.forEach(timeline => context.currentTimeline.mergeTimelineCollectedStyles(timeline));\n        context.transformIntoNewTimeline(furthestTime);\n        context.previousNode = ast;\n    }\n    _visitTiming(ast, context) {\n        if (ast.dynamic) {\n            const strValue = ast.strValue;\n            const timingValue = context.params ? interpolateParams(strValue, context.params, context.errors) : strValue;\n            return resolveTiming(timingValue, context.errors);\n        }\n        else {\n            return { duration: ast.duration, delay: ast.delay, easing: ast.easing };\n        }\n    }\n    visitAnimate(ast, context) {\n        const timings = context.currentAnimateTimings = this._visitTiming(ast.timings, context);\n        const timeline = context.currentTimeline;\n        if (timings.delay) {\n            context.incrementTime(timings.delay);\n            timeline.snapshotCurrentStyles();\n        }\n        const style = ast.style;\n        if (style.type == 5 /* AnimationMetadataType.Keyframes */) {\n            this.visitKeyframes(style, context);\n        }\n        else {\n            context.incrementTime(timings.duration);\n            this.visitStyle(style, context);\n            timeline.applyStylesToKeyframe();\n        }\n        context.currentAnimateTimings = null;\n        context.previousNode = ast;\n    }\n    visitStyle(ast, context) {\n        const timeline = context.currentTimeline;\n        const timings = context.currentAnimateTimings;\n        // this is a special case for when a style() call\n        // directly follows  an animate() call (but not inside of an animate() call)\n        if (!timings && timeline.hasCurrentStyleProperties()) {\n            timeline.forwardFrame();\n        }\n        const easing = (timings && timings.easing) || ast.easing;\n        if (ast.isEmptyStep) {\n            timeline.applyEmptyStep(easing);\n        }\n        else {\n            timeline.setStyles(ast.styles, easing, context.errors, context.options);\n        }\n        context.previousNode = ast;\n    }\n    visitKeyframes(ast, context) {\n        const currentAnimateTimings = context.currentAnimateTimings;\n        const startTime = (context.currentTimeline).duration;\n        const duration = currentAnimateTimings.duration;\n        const innerContext = context.createSubContext();\n        const innerTimeline = innerContext.currentTimeline;\n        innerTimeline.easing = currentAnimateTimings.easing;\n        ast.styles.forEach(step => {\n            const offset = step.offset || 0;\n            innerTimeline.forwardTime(offset * duration);\n            innerTimeline.setStyles(step.styles, step.easing, context.errors, context.options);\n            innerTimeline.applyStylesToKeyframe();\n        });\n        // this will ensure that the parent timeline gets all the styles from\n        // the child even if the new timeline below is not used\n        context.currentTimeline.mergeTimelineCollectedStyles(innerTimeline);\n        // we do this because the window between this timeline and the sub timeline\n        // should ensure that the styles within are exactly the same as they were before\n        context.transformIntoNewTimeline(startTime + duration);\n        context.previousNode = ast;\n    }\n    visitQuery(ast, context) {\n        // in the event that the first step before this is a style step we need\n        // to ensure the styles are applied before the children are animated\n        const startTime = context.currentTimeline.currentTime;\n        const options = (ast.options || {});\n        const delay = options.delay ? resolveTimingValue(options.delay) : 0;\n        if (delay &&\n            (context.previousNode.type === 6 /* AnimationMetadataType.Style */ ||\n                (startTime == 0 && context.currentTimeline.hasCurrentStyleProperties()))) {\n            context.currentTimeline.snapshotCurrentStyles();\n            context.previousNode = DEFAULT_NOOP_PREVIOUS_NODE;\n        }\n        let furthestTime = startTime;\n        const elms = context.invokeQuery(ast.selector, ast.originalSelector, ast.limit, ast.includeSelf, options.optional ? true : false, context.errors);\n        context.currentQueryTotal = elms.length;\n        let sameElementTimeline = null;\n        elms.forEach((element, i) => {\n            context.currentQueryIndex = i;\n            const innerContext = context.createSubContext(ast.options, element);\n            if (delay) {\n                innerContext.delayNextStep(delay);\n            }\n            if (element === context.element) {\n                sameElementTimeline = innerContext.currentTimeline;\n            }\n            visitDslNode(this, ast.animation, innerContext);\n            // this is here just incase the inner steps only contain or end\n            // with a style() call (which is here to signal that this is a preparatory\n            // call to style an element before it is animated again)\n            innerContext.currentTimeline.applyStylesToKeyframe();\n            const endTime = innerContext.currentTimeline.currentTime;\n            furthestTime = Math.max(furthestTime, endTime);\n        });\n        context.currentQueryIndex = 0;\n        context.currentQueryTotal = 0;\n        context.transformIntoNewTimeline(furthestTime);\n        if (sameElementTimeline) {\n            context.currentTimeline.mergeTimelineCollectedStyles(sameElementTimeline);\n            context.currentTimeline.snapshotCurrentStyles();\n        }\n        context.previousNode = ast;\n    }\n    visitStagger(ast, context) {\n        const parentContext = context.parentContext;\n        const tl = context.currentTimeline;\n        const timings = ast.timings;\n        const duration = Math.abs(timings.duration);\n        const maxTime = duration * (context.currentQueryTotal - 1);\n        let delay = duration * context.currentQueryIndex;\n        let staggerTransformer = timings.duration < 0 ? 'reverse' : timings.easing;\n        switch (staggerTransformer) {\n            case 'reverse':\n                delay = maxTime - delay;\n                break;\n            case 'full':\n                delay = parentContext.currentStaggerTime;\n                break;\n        }\n        const timeline = context.currentTimeline;\n        if (delay) {\n            timeline.delayNextStep(delay);\n        }\n        const startingTime = timeline.currentTime;\n        visitDslNode(this, ast.animation, context);\n        context.previousNode = ast;\n        // time = duration + delay\n        // the reason why this computation is so complex is because\n        // the inner timeline may either have a delay value or a stretched\n        // keyframe depending on if a subtimeline is not used or is used.\n        parentContext.currentStaggerTime =\n            (tl.currentTime - startingTime) + (tl.startTime - parentContext.currentTimeline.startTime);\n    }\n}\nconst DEFAULT_NOOP_PREVIOUS_NODE = {};\nclass AnimationTimelineContext {\n    constructor(_driver, element, subInstructions, _enterClassName, _leaveClassName, errors, timelines, initialTimeline) {\n        this._driver = _driver;\n        this.element = element;\n        this.subInstructions = subInstructions;\n        this._enterClassName = _enterClassName;\n        this._leaveClassName = _leaveClassName;\n        this.errors = errors;\n        this.timelines = timelines;\n        this.parentContext = null;\n        this.currentAnimateTimings = null;\n        this.previousNode = DEFAULT_NOOP_PREVIOUS_NODE;\n        this.subContextCount = 0;\n        this.options = {};\n        this.currentQueryIndex = 0;\n        this.currentQueryTotal = 0;\n        this.currentStaggerTime = 0;\n        this.currentTimeline = initialTimeline || new TimelineBuilder(this._driver, element, 0);\n        timelines.push(this.currentTimeline);\n    }\n    get params() {\n        return this.options.params;\n    }\n    updateOptions(options, skipIfExists) {\n        if (!options)\n            return;\n        const newOptions = options;\n        let optionsToUpdate = this.options;\n        // NOTE: this will get patched up when other animation methods support duration overrides\n        if (newOptions.duration != null) {\n            optionsToUpdate.duration = resolveTimingValue(newOptions.duration);\n        }\n        if (newOptions.delay != null) {\n            optionsToUpdate.delay = resolveTimingValue(newOptions.delay);\n        }\n        const newParams = newOptions.params;\n        if (newParams) {\n            let paramsToUpdate = optionsToUpdate.params;\n            if (!paramsToUpdate) {\n                paramsToUpdate = this.options.params = {};\n            }\n            Object.keys(newParams).forEach(name => {\n                if (!skipIfExists || !paramsToUpdate.hasOwnProperty(name)) {\n                    paramsToUpdate[name] = interpolateParams(newParams[name], paramsToUpdate, this.errors);\n                }\n            });\n        }\n    }\n    _copyOptions() {\n        const options = {};\n        if (this.options) {\n            const oldParams = this.options.params;\n            if (oldParams) {\n                const params = options['params'] = {};\n                Object.keys(oldParams).forEach(name => {\n                    params[name] = oldParams[name];\n                });\n            }\n        }\n        return options;\n    }\n    createSubContext(options = null, element, newTime) {\n        const target = element || this.element;\n        const context = new AnimationTimelineContext(this._driver, target, this.subInstructions, this._enterClassName, this._leaveClassName, this.errors, this.timelines, this.currentTimeline.fork(target, newTime || 0));\n        context.previousNode = this.previousNode;\n        context.currentAnimateTimings = this.currentAnimateTimings;\n        context.options = this._copyOptions();\n        context.updateOptions(options);\n        context.currentQueryIndex = this.currentQueryIndex;\n        context.currentQueryTotal = this.currentQueryTotal;\n        context.parentContext = this;\n        this.subContextCount++;\n        return context;\n    }\n    transformIntoNewTimeline(newTime) {\n        this.previousNode = DEFAULT_NOOP_PREVIOUS_NODE;\n        this.currentTimeline = this.currentTimeline.fork(this.element, newTime);\n        this.timelines.push(this.currentTimeline);\n        return this.currentTimeline;\n    }\n    appendInstructionToTimeline(instruction, duration, delay) {\n        const updatedTimings = {\n            duration: duration != null ? duration : instruction.duration,\n            delay: this.currentTimeline.currentTime + (delay != null ? delay : 0) + instruction.delay,\n            easing: ''\n        };\n        const builder = new SubTimelineBuilder(this._driver, instruction.element, instruction.keyframes, instruction.preStyleProps, instruction.postStyleProps, updatedTimings, instruction.stretchStartingKeyframe);\n        this.timelines.push(builder);\n        return updatedTimings;\n    }\n    incrementTime(time) {\n        this.currentTimeline.forwardTime(this.currentTimeline.duration + time);\n    }\n    delayNextStep(delay) {\n        // negative delays are not yet supported\n        if (delay > 0) {\n            this.currentTimeline.delayNextStep(delay);\n        }\n    }\n    invokeQuery(selector, originalSelector, limit, includeSelf, optional, errors) {\n        let results = [];\n        if (includeSelf) {\n            results.push(this.element);\n        }\n        if (selector.length > 0) { // only if :self is used then the selector can be empty\n            selector = selector.replace(ENTER_TOKEN_REGEX, '.' + this._enterClassName);\n            selector = selector.replace(LEAVE_TOKEN_REGEX, '.' + this._leaveClassName);\n            const multi = limit != 1;\n            let elements = this._driver.query(this.element, selector, multi);\n            if (limit !== 0) {\n                elements = limit < 0 ? elements.slice(elements.length + limit, elements.length) :\n                    elements.slice(0, limit);\n            }\n            results.push(...elements);\n        }\n        if (!optional && results.length == 0) {\n            errors.push(invalidQuery(originalSelector));\n        }\n        return results;\n    }\n}\nclass TimelineBuilder {\n    constructor(_driver, element, startTime, _elementTimelineStylesLookup) {\n        this._driver = _driver;\n        this.element = element;\n        this.startTime = startTime;\n        this._elementTimelineStylesLookup = _elementTimelineStylesLookup;\n        this.duration = 0;\n        this.easing = null;\n        this._previousKeyframe = new Map();\n        this._currentKeyframe = new Map();\n        this._keyframes = new Map();\n        this._styleSummary = new Map();\n        this._localTimelineStyles = new Map();\n        this._pendingStyles = new Map();\n        this._backFill = new Map();\n        this._currentEmptyStepKeyframe = null;\n        if (!this._elementTimelineStylesLookup) {\n            this._elementTimelineStylesLookup = new Map();\n        }\n        this._globalTimelineStyles = this._elementTimelineStylesLookup.get(element);\n        if (!this._globalTimelineStyles) {\n            this._globalTimelineStyles = this._localTimelineStyles;\n            this._elementTimelineStylesLookup.set(element, this._localTimelineStyles);\n        }\n        this._loadKeyframe();\n    }\n    containsAnimation() {\n        switch (this._keyframes.size) {\n            case 0:\n                return false;\n            case 1:\n                return this.hasCurrentStyleProperties();\n            default:\n                return true;\n        }\n    }\n    hasCurrentStyleProperties() {\n        return this._currentKeyframe.size > 0;\n    }\n    get currentTime() {\n        return this.startTime + this.duration;\n    }\n    delayNextStep(delay) {\n        // in the event that a style() step is placed right before a stagger()\n        // and that style() step is the very first style() value in the animation\n        // then we need to make a copy of the keyframe [0, copy, 1] so that the delay\n        // properly applies the style() values to work with the stagger...\n        const hasPreStyleStep = this._keyframes.size === 1 && this._pendingStyles.size;\n        if (this.duration || hasPreStyleStep) {\n            this.forwardTime(this.currentTime + delay);\n            if (hasPreStyleStep) {\n                this.snapshotCurrentStyles();\n            }\n        }\n        else {\n            this.startTime += delay;\n        }\n    }\n    fork(element, currentTime) {\n        this.applyStylesToKeyframe();\n        return new TimelineBuilder(this._driver, element, currentTime || this.currentTime, this._elementTimelineStylesLookup);\n    }\n    _loadKeyframe() {\n        if (this._currentKeyframe) {\n            this._previousKeyframe = this._currentKeyframe;\n        }\n        this._currentKeyframe = this._keyframes.get(this.duration);\n        if (!this._currentKeyframe) {\n            this._currentKeyframe = new Map();\n            this._keyframes.set(this.duration, this._currentKeyframe);\n        }\n    }\n    forwardFrame() {\n        this.duration += ONE_FRAME_IN_MILLISECONDS;\n        this._loadKeyframe();\n    }\n    forwardTime(time) {\n        this.applyStylesToKeyframe();\n        this.duration = time;\n        this._loadKeyframe();\n    }\n    _updateStyle(prop, value) {\n        this._localTimelineStyles.set(prop, value);\n        this._globalTimelineStyles.set(prop, value);\n        this._styleSummary.set(prop, { time: this.currentTime, value });\n    }\n    allowOnlyTimelineStyles() {\n        return this._currentEmptyStepKeyframe !== this._currentKeyframe;\n    }\n    applyEmptyStep(easing) {\n        if (easing) {\n            this._previousKeyframe.set('easing', easing);\n        }\n        // special case for animate(duration):\n        // all missing styles are filled with a `*` value then\n        // if any destination styles are filled in later on the same\n        // keyframe then they will override the overridden styles\n        // We use `_globalTimelineStyles` here because there may be\n        // styles in previous keyframes that are not present in this timeline\n        for (let [prop, value] of this._globalTimelineStyles) {\n            this._backFill.set(prop, value || AUTO_STYLE);\n            this._currentKeyframe.set(prop, AUTO_STYLE);\n        }\n        this._currentEmptyStepKeyframe = this._currentKeyframe;\n    }\n    setStyles(input, easing, errors, options) {\n        if (easing) {\n            this._previousKeyframe.set('easing', easing);\n        }\n        const params = (options && options.params) || {};\n        const styles = flattenStyles(input, this._globalTimelineStyles);\n        for (let [prop, value] of styles) {\n            const val = interpolateParams(value, params, errors);\n            this._pendingStyles.set(prop, val);\n            if (!this._localTimelineStyles.has(prop)) {\n                this._backFill.set(prop, this._globalTimelineStyles.get(prop) ?? AUTO_STYLE);\n            }\n            this._updateStyle(prop, val);\n        }\n    }\n    applyStylesToKeyframe() {\n        if (this._pendingStyles.size == 0)\n            return;\n        this._pendingStyles.forEach((val, prop) => {\n            this._currentKeyframe.set(prop, val);\n        });\n        this._pendingStyles.clear();\n        this._localTimelineStyles.forEach((val, prop) => {\n            if (!this._currentKeyframe.has(prop)) {\n                this._currentKeyframe.set(prop, val);\n            }\n        });\n    }\n    snapshotCurrentStyles() {\n        for (let [prop, val] of this._localTimelineStyles) {\n            this._pendingStyles.set(prop, val);\n            this._updateStyle(prop, val);\n        }\n    }\n    getFinalKeyframe() {\n        return this._keyframes.get(this.duration);\n    }\n    get properties() {\n        const properties = [];\n        for (let prop in this._currentKeyframe) {\n            properties.push(prop);\n        }\n        return properties;\n    }\n    mergeTimelineCollectedStyles(timeline) {\n        timeline._styleSummary.forEach((details1, prop) => {\n            const details0 = this._styleSummary.get(prop);\n            if (!details0 || details1.time > details0.time) {\n                this._updateStyle(prop, details1.value);\n            }\n        });\n    }\n    buildKeyframes() {\n        this.applyStylesToKeyframe();\n        const preStyleProps = new Set();\n        const postStyleProps = new Set();\n        const isEmpty = this._keyframes.size === 1 && this.duration === 0;\n        let finalKeyframes = [];\n        this._keyframes.forEach((keyframe, time) => {\n            const finalKeyframe = copyStyles(keyframe, new Map(), this._backFill);\n            finalKeyframe.forEach((value, prop) => {\n                if (value === ɵPRE_STYLE) {\n                    preStyleProps.add(prop);\n                }\n                else if (value === AUTO_STYLE) {\n                    postStyleProps.add(prop);\n                }\n            });\n            if (!isEmpty) {\n                finalKeyframe.set('offset', time / this.duration);\n            }\n            finalKeyframes.push(finalKeyframe);\n        });\n        const preProps = preStyleProps.size ? iteratorToArray(preStyleProps.values()) : [];\n        const postProps = postStyleProps.size ? iteratorToArray(postStyleProps.values()) : [];\n        // special case for a 0-second animation (which is designed just to place styles onscreen)\n        if (isEmpty) {\n            const kf0 = finalKeyframes[0];\n            const kf1 = new Map(kf0);\n            kf0.set('offset', 0);\n            kf1.set('offset', 1);\n            finalKeyframes = [kf0, kf1];\n        }\n        return createTimelineInstruction(this.element, finalKeyframes, preProps, postProps, this.duration, this.startTime, this.easing, false);\n    }\n}\nclass SubTimelineBuilder extends TimelineBuilder {\n    constructor(driver, element, keyframes, preStyleProps, postStyleProps, timings, _stretchStartingKeyframe = false) {\n        super(driver, element, timings.delay);\n        this.keyframes = keyframes;\n        this.preStyleProps = preStyleProps;\n        this.postStyleProps = postStyleProps;\n        this._stretchStartingKeyframe = _stretchStartingKeyframe;\n        this.timings = { duration: timings.duration, delay: timings.delay, easing: timings.easing };\n    }\n    containsAnimation() {\n        return this.keyframes.length > 1;\n    }\n    buildKeyframes() {\n        let keyframes = this.keyframes;\n        let { delay, duration, easing } = this.timings;\n        if (this._stretchStartingKeyframe && delay) {\n            const newKeyframes = [];\n            const totalTime = duration + delay;\n            const startingGap = delay / totalTime;\n            // the original starting keyframe now starts once the delay is done\n            const newFirstKeyframe = copyStyles(keyframes[0]);\n            newFirstKeyframe.set('offset', 0);\n            newKeyframes.push(newFirstKeyframe);\n            const oldFirstKeyframe = copyStyles(keyframes[0]);\n            oldFirstKeyframe.set('offset', roundOffset(startingGap));\n            newKeyframes.push(oldFirstKeyframe);\n            /*\n              When the keyframe is stretched then it means that the delay before the animation\n              starts is gone. Instead the first keyframe is placed at the start of the animation\n              and it is then copied to where it starts when the original delay is over. This basically\n              means nothing animates during that delay, but the styles are still rendered. For this\n              to work the original offset values that exist in the original keyframes must be \"warped\"\n              so that they can take the new keyframe + delay into account.\n      \n              delay=1000, duration=1000, keyframes = 0 .5 1\n      \n              turns into\n      \n              delay=0, duration=2000, keyframes = 0 .33 .66 1\n             */\n            // offsets between 1 ... n -1 are all warped by the keyframe stretch\n            const limit = keyframes.length - 1;\n            for (let i = 1; i <= limit; i++) {\n                let kf = copyStyles(keyframes[i]);\n                const oldOffset = kf.get('offset');\n                const timeAtKeyframe = delay + oldOffset * duration;\n                kf.set('offset', roundOffset(timeAtKeyframe / totalTime));\n                newKeyframes.push(kf);\n            }\n            // the new starting keyframe should be added at the start\n            duration = totalTime;\n            delay = 0;\n            easing = '';\n            keyframes = newKeyframes;\n        }\n        return createTimelineInstruction(this.element, keyframes, this.preStyleProps, this.postStyleProps, duration, delay, easing, true);\n    }\n}\nfunction roundOffset(offset, decimalPoints = 3) {\n    const mult = Math.pow(10, decimalPoints - 1);\n    return Math.round(offset * mult) / mult;\n}\nfunction flattenStyles(input, allStyles) {\n    const styles = new Map();\n    let allProperties;\n    input.forEach(token => {\n        if (token === '*') {\n            allProperties = allProperties || allStyles.keys();\n            for (let prop of allProperties) {\n                styles.set(prop, AUTO_STYLE);\n            }\n        }\n        else {\n            copyStyles(token, styles);\n        }\n    });\n    return styles;\n}\n\nclass Animation {\n    constructor(_driver, input) {\n        this._driver = _driver;\n        const errors = [];\n        const warnings = [];\n        const ast = buildAnimationAst(_driver, input, errors, warnings);\n        if (errors.length) {\n            throw validationFailed(errors);\n        }\n        if (warnings.length) {\n            warnValidation(warnings);\n        }\n        this._animationAst = ast;\n    }\n    buildTimelines(element, startingStyles, destinationStyles, options, subInstructions) {\n        const start = Array.isArray(startingStyles) ? normalizeStyles(startingStyles) :\n            startingStyles;\n        const dest = Array.isArray(destinationStyles) ? normalizeStyles(destinationStyles) :\n            destinationStyles;\n        const errors = [];\n        subInstructions = subInstructions || new ElementInstructionMap();\n        const result = buildAnimationTimelines(this._driver, element, this._animationAst, ENTER_CLASSNAME, LEAVE_CLASSNAME, start, dest, options, subInstructions, errors);\n        if (errors.length) {\n            throw buildingFailed(errors);\n        }\n        return result;\n    }\n}\n\n/**\n * @publicApi\n */\nclass AnimationStyleNormalizer {\n}\n/**\n * @publicApi\n */\nclass NoopAnimationStyleNormalizer {\n    normalizePropertyName(propertyName, errors) {\n        return propertyName;\n    }\n    normalizeStyleValue(userProvidedProperty, normalizedProperty, value, errors) {\n        return value;\n    }\n}\n\nconst DIMENSIONAL_PROP_SET = new Set([\n    'width',\n    'height',\n    'minWidth',\n    'minHeight',\n    'maxWidth',\n    'maxHeight',\n    'left',\n    'top',\n    'bottom',\n    'right',\n    'fontSize',\n    'outlineWidth',\n    'outlineOffset',\n    'paddingTop',\n    'paddingLeft',\n    'paddingBottom',\n    'paddingRight',\n    'marginTop',\n    'marginLeft',\n    'marginBottom',\n    'marginRight',\n    'borderRadius',\n    'borderWidth',\n    'borderTopWidth',\n    'borderLeftWidth',\n    'borderRightWidth',\n    'borderBottomWidth',\n    'textIndent',\n    'perspective'\n]);\nclass WebAnimationsStyleNormalizer extends AnimationStyleNormalizer {\n    normalizePropertyName(propertyName, errors) {\n        return dashCaseToCamelCase(propertyName);\n    }\n    normalizeStyleValue(userProvidedProperty, normalizedProperty, value, errors) {\n        let unit = '';\n        const strVal = value.toString().trim();\n        if (DIMENSIONAL_PROP_SET.has(normalizedProperty) && value !== 0 && value !== '0') {\n            if (typeof value === 'number') {\n                unit = 'px';\n            }\n            else {\n                const valAndSuffixMatch = value.match(/^[+-]?[\\d\\.]+([a-z]*)$/);\n                if (valAndSuffixMatch && valAndSuffixMatch[1].length == 0) {\n                    errors.push(invalidCssUnitValue(userProvidedProperty, value));\n                }\n            }\n        }\n        return strVal + unit;\n    }\n}\n\nfunction createTransitionInstruction(element, triggerName, fromState, toState, isRemovalTransition, fromStyles, toStyles, timelines, queriedElements, preStyleProps, postStyleProps, totalTime, errors) {\n    return {\n        type: 0 /* AnimationTransitionInstructionType.TransitionAnimation */,\n        element,\n        triggerName,\n        isRemovalTransition,\n        fromState,\n        fromStyles,\n        toState,\n        toStyles,\n        timelines,\n        queriedElements,\n        preStyleProps,\n        postStyleProps,\n        totalTime,\n        errors\n    };\n}\n\nconst EMPTY_OBJECT = {};\nclass AnimationTransitionFactory {\n    constructor(_triggerName, ast, _stateStyles) {\n        this._triggerName = _triggerName;\n        this.ast = ast;\n        this._stateStyles = _stateStyles;\n    }\n    match(currentState, nextState, element, params) {\n        return oneOrMoreTransitionsMatch(this.ast.matchers, currentState, nextState, element, params);\n    }\n    buildStyles(stateName, params, errors) {\n        let styler = this._stateStyles.get('*');\n        if (stateName !== undefined) {\n            styler = this._stateStyles.get(stateName?.toString()) || styler;\n        }\n        return styler ? styler.buildStyles(params, errors) : new Map();\n    }\n    build(driver, element, currentState, nextState, enterClassName, leaveClassName, currentOptions, nextOptions, subInstructions, skipAstBuild) {\n        const errors = [];\n        const transitionAnimationParams = this.ast.options && this.ast.options.params || EMPTY_OBJECT;\n        const currentAnimationParams = currentOptions && currentOptions.params || EMPTY_OBJECT;\n        const currentStateStyles = this.buildStyles(currentState, currentAnimationParams, errors);\n        const nextAnimationParams = nextOptions && nextOptions.params || EMPTY_OBJECT;\n        const nextStateStyles = this.buildStyles(nextState, nextAnimationParams, errors);\n        const queriedElements = new Set();\n        const preStyleMap = new Map();\n        const postStyleMap = new Map();\n        const isRemoval = nextState === 'void';\n        const animationOptions = {\n            params: applyParamDefaults(nextAnimationParams, transitionAnimationParams),\n            delay: this.ast.options?.delay,\n        };\n        const timelines = skipAstBuild ?\n            [] :\n            buildAnimationTimelines(driver, element, this.ast.animation, enterClassName, leaveClassName, currentStateStyles, nextStateStyles, animationOptions, subInstructions, errors);\n        let totalTime = 0;\n        timelines.forEach(tl => {\n            totalTime = Math.max(tl.duration + tl.delay, totalTime);\n        });\n        if (errors.length) {\n            return createTransitionInstruction(element, this._triggerName, currentState, nextState, isRemoval, currentStateStyles, nextStateStyles, [], [], preStyleMap, postStyleMap, totalTime, errors);\n        }\n        timelines.forEach(tl => {\n            const elm = tl.element;\n            const preProps = getOrSetDefaultValue(preStyleMap, elm, new Set());\n            tl.preStyleProps.forEach(prop => preProps.add(prop));\n            const postProps = getOrSetDefaultValue(postStyleMap, elm, new Set());\n            tl.postStyleProps.forEach(prop => postProps.add(prop));\n            if (elm !== element) {\n                queriedElements.add(elm);\n            }\n        });\n        if (typeof ngDevMode === 'undefined' || ngDevMode) {\n            checkNonAnimatableInTimelines(timelines, this._triggerName, driver);\n        }\n        const queriedElementsList = iteratorToArray(queriedElements.values());\n        return createTransitionInstruction(element, this._triggerName, currentState, nextState, isRemoval, currentStateStyles, nextStateStyles, timelines, queriedElementsList, preStyleMap, postStyleMap, totalTime);\n    }\n}\n/**\n * Checks inside a set of timelines if they try to animate a css property which is not considered\n * animatable, in that case it prints a warning on the console.\n * Besides that the function doesn't have any other effect.\n *\n * Note: this check is done here after the timelines are built instead of doing on a lower level so\n * that we can make sure that the warning appears only once per instruction (we can aggregate here\n * all the issues instead of finding them separately).\n *\n * @param timelines The built timelines for the current instruction.\n * @param triggerName The name of the trigger for the current instruction.\n * @param driver Animation driver used to perform the check.\n *\n */\nfunction checkNonAnimatableInTimelines(timelines, triggerName, driver) {\n    if (!driver.validateAnimatableStyleProperty) {\n        return;\n    }\n    const allowedNonAnimatableProps = new Set([\n        // 'easing' is a utility/synthetic prop we use to represent\n        // easing functions, it represents a property of the animation\n        // which is not animatable but different values can be used\n        // in different steps\n        'easing'\n    ]);\n    const invalidNonAnimatableProps = new Set();\n    timelines.forEach(({ keyframes }) => {\n        const nonAnimatablePropsInitialValues = new Map();\n        keyframes.forEach(keyframe => {\n            const entriesToCheck = Array.from(keyframe.entries()).filter(([prop]) => !allowedNonAnimatableProps.has(prop));\n            for (const [prop, value] of entriesToCheck) {\n                if (!driver.validateAnimatableStyleProperty(prop)) {\n                    if (nonAnimatablePropsInitialValues.has(prop) && !invalidNonAnimatableProps.has(prop)) {\n                        const propInitialValue = nonAnimatablePropsInitialValues.get(prop);\n                        if (propInitialValue !== value) {\n                            invalidNonAnimatableProps.add(prop);\n                        }\n                    }\n                    else {\n                        nonAnimatablePropsInitialValues.set(prop, value);\n                    }\n                }\n            }\n        });\n    });\n    if (invalidNonAnimatableProps.size > 0) {\n        console.warn(`Warning: The animation trigger \"${triggerName}\" is attempting to animate the following` +\n            ' not animatable properties: ' + Array.from(invalidNonAnimatableProps).join(', ') + '\\n' +\n            '(to check the list of all animatable properties visit https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_animated_properties)');\n    }\n}\nfunction oneOrMoreTransitionsMatch(matchFns, currentState, nextState, element, params) {\n    return matchFns.some(fn => fn(currentState, nextState, element, params));\n}\nfunction applyParamDefaults(userParams, defaults) {\n    const result = copyObj(defaults);\n    for (const key in userParams) {\n        if (userParams.hasOwnProperty(key) && userParams[key] != null) {\n            result[key] = userParams[key];\n        }\n    }\n    return result;\n}\nclass AnimationStateStyles {\n    constructor(styles, defaultParams, normalizer) {\n        this.styles = styles;\n        this.defaultParams = defaultParams;\n        this.normalizer = normalizer;\n    }\n    buildStyles(params, errors) {\n        const finalStyles = new Map();\n        const combinedParams = copyObj(this.defaultParams);\n        Object.keys(params).forEach(key => {\n            const value = params[key];\n            if (value !== null) {\n                combinedParams[key] = value;\n            }\n        });\n        this.styles.styles.forEach(value => {\n            if (typeof value !== 'string') {\n                value.forEach((val, prop) => {\n                    if (val) {\n                        val = interpolateParams(val, combinedParams, errors);\n                    }\n                    const normalizedProp = this.normalizer.normalizePropertyName(prop, errors);\n                    val = this.normalizer.normalizeStyleValue(prop, normalizedProp, val, errors);\n                    finalStyles.set(prop, val);\n                });\n            }\n        });\n        return finalStyles;\n    }\n}\n\nfunction buildTrigger(name, ast, normalizer) {\n    return new AnimationTrigger(name, ast, normalizer);\n}\nclass AnimationTrigger {\n    constructor(name, ast, _normalizer) {\n        this.name = name;\n        this.ast = ast;\n        this._normalizer = _normalizer;\n        this.transitionFactories = [];\n        this.states = new Map();\n        ast.states.forEach(ast => {\n            const defaultParams = (ast.options && ast.options.params) || {};\n            this.states.set(ast.name, new AnimationStateStyles(ast.style, defaultParams, _normalizer));\n        });\n        balanceProperties(this.states, 'true', '1');\n        balanceProperties(this.states, 'false', '0');\n        ast.transitions.forEach(ast => {\n            this.transitionFactories.push(new AnimationTransitionFactory(name, ast, this.states));\n        });\n        this.fallbackTransition = createFallbackTransition(name, this.states, this._normalizer);\n    }\n    get containsQueries() {\n        return this.ast.queryCount > 0;\n    }\n    matchTransition(currentState, nextState, element, params) {\n        const entry = this.transitionFactories.find(f => f.match(currentState, nextState, element, params));\n        return entry || null;\n    }\n    matchStyles(currentState, params, errors) {\n        return this.fallbackTransition.buildStyles(currentState, params, errors);\n    }\n}\nfunction createFallbackTransition(triggerName, states, normalizer) {\n    const matchers = [(fromState, toState) => true];\n    const animation = { type: 2 /* AnimationMetadataType.Sequence */, steps: [], options: null };\n    const transition = {\n        type: 1 /* AnimationMetadataType.Transition */,\n        animation,\n        matchers,\n        options: null,\n        queryCount: 0,\n        depCount: 0\n    };\n    return new AnimationTransitionFactory(triggerName, transition, states);\n}\nfunction balanceProperties(stateMap, key1, key2) {\n    if (stateMap.has(key1)) {\n        if (!stateMap.has(key2)) {\n            stateMap.set(key2, stateMap.get(key1));\n        }\n    }\n    else if (stateMap.has(key2)) {\n        stateMap.set(key1, stateMap.get(key2));\n    }\n}\n\nconst EMPTY_INSTRUCTION_MAP = new ElementInstructionMap();\nclass TimelineAnimationEngine {\n    constructor(bodyNode, _driver, _normalizer) {\n        this.bodyNode = bodyNode;\n        this._driver = _driver;\n        this._normalizer = _normalizer;\n        this._animations = new Map();\n        this._playersById = new Map();\n        this.players = [];\n    }\n    register(id, metadata) {\n        const errors = [];\n        const warnings = [];\n        const ast = buildAnimationAst(this._driver, metadata, errors, warnings);\n        if (errors.length) {\n            throw registerFailed(errors);\n        }\n        else {\n            if (warnings.length) {\n                warnRegister(warnings);\n            }\n            this._animations.set(id, ast);\n        }\n    }\n    _buildPlayer(i, preStyles, postStyles) {\n        const element = i.element;\n        const keyframes = normalizeKeyframes$1(this._driver, this._normalizer, element, i.keyframes, preStyles, postStyles);\n        return this._driver.animate(element, keyframes, i.duration, i.delay, i.easing, [], true);\n    }\n    create(id, element, options = {}) {\n        const errors = [];\n        const ast = this._animations.get(id);\n        let instructions;\n        const autoStylesMap = new Map();\n        if (ast) {\n            instructions = buildAnimationTimelines(this._driver, element, ast, ENTER_CLASSNAME, LEAVE_CLASSNAME, new Map(), new Map(), options, EMPTY_INSTRUCTION_MAP, errors);\n            instructions.forEach(inst => {\n                const styles = getOrSetDefaultValue(autoStylesMap, inst.element, new Map());\n                inst.postStyleProps.forEach(prop => styles.set(prop, null));\n            });\n        }\n        else {\n            errors.push(missingOrDestroyedAnimation());\n            instructions = [];\n        }\n        if (errors.length) {\n            throw createAnimationFailed(errors);\n        }\n        autoStylesMap.forEach((styles, element) => {\n            styles.forEach((_, prop) => {\n                styles.set(prop, this._driver.computeStyle(element, prop, AUTO_STYLE));\n            });\n        });\n        const players = instructions.map(i => {\n            const styles = autoStylesMap.get(i.element);\n            return this._buildPlayer(i, new Map(), styles);\n        });\n        const player = optimizeGroupPlayer(players);\n        this._playersById.set(id, player);\n        player.onDestroy(() => this.destroy(id));\n        this.players.push(player);\n        return player;\n    }\n    destroy(id) {\n        const player = this._getPlayer(id);\n        player.destroy();\n        this._playersById.delete(id);\n        const index = this.players.indexOf(player);\n        if (index >= 0) {\n            this.players.splice(index, 1);\n        }\n    }\n    _getPlayer(id) {\n        const player = this._playersById.get(id);\n        if (!player) {\n            throw missingPlayer(id);\n        }\n        return player;\n    }\n    listen(id, element, eventName, callback) {\n        // triggerName, fromState, toState are all ignored for timeline animations\n        const baseEvent = makeAnimationEvent(element, '', '', '');\n        listenOnPlayer(this._getPlayer(id), eventName, baseEvent, callback);\n        return () => { };\n    }\n    command(id, element, command, args) {\n        if (command == 'register') {\n            this.register(id, args[0]);\n            return;\n        }\n        if (command == 'create') {\n            const options = (args[0] || {});\n            this.create(id, element, options);\n            return;\n        }\n        const player = this._getPlayer(id);\n        switch (command) {\n            case 'play':\n                player.play();\n                break;\n            case 'pause':\n                player.pause();\n                break;\n            case 'reset':\n                player.reset();\n                break;\n            case 'restart':\n                player.restart();\n                break;\n            case 'finish':\n                player.finish();\n                break;\n            case 'init':\n                player.init();\n                break;\n            case 'setPosition':\n                player.setPosition(parseFloat(args[0]));\n                break;\n            case 'destroy':\n                this.destroy(id);\n                break;\n        }\n    }\n}\n\nconst QUEUED_CLASSNAME = 'ng-animate-queued';\nconst QUEUED_SELECTOR = '.ng-animate-queued';\nconst DISABLED_CLASSNAME = 'ng-animate-disabled';\nconst DISABLED_SELECTOR = '.ng-animate-disabled';\nconst STAR_CLASSNAME = 'ng-star-inserted';\nconst STAR_SELECTOR = '.ng-star-inserted';\nconst EMPTY_PLAYER_ARRAY = [];\nconst NULL_REMOVAL_STATE = {\n    namespaceId: '',\n    setForRemoval: false,\n    setForMove: false,\n    hasAnimation: false,\n    removedBeforeQueried: false\n};\nconst NULL_REMOVED_QUERIED_STATE = {\n    namespaceId: '',\n    setForMove: false,\n    setForRemoval: false,\n    hasAnimation: false,\n    removedBeforeQueried: true\n};\nconst REMOVAL_FLAG = '__ng_removed';\nclass StateValue {\n    get params() {\n        return this.options.params;\n    }\n    constructor(input, namespaceId = '') {\n        this.namespaceId = namespaceId;\n        const isObj = input && input.hasOwnProperty('value');\n        const value = isObj ? input['value'] : input;\n        this.value = normalizeTriggerValue(value);\n        if (isObj) {\n            const options = copyObj(input);\n            delete options['value'];\n            this.options = options;\n        }\n        else {\n            this.options = {};\n        }\n        if (!this.options.params) {\n            this.options.params = {};\n        }\n    }\n    absorbOptions(options) {\n        const newParams = options.params;\n        if (newParams) {\n            const oldParams = this.options.params;\n            Object.keys(newParams).forEach(prop => {\n                if (oldParams[prop] == null) {\n                    oldParams[prop] = newParams[prop];\n                }\n            });\n        }\n    }\n}\nconst VOID_VALUE = 'void';\nconst DEFAULT_STATE_VALUE = new StateValue(VOID_VALUE);\nclass AnimationTransitionNamespace {\n    constructor(id, hostElement, _engine) {\n        this.id = id;\n        this.hostElement = hostElement;\n        this._engine = _engine;\n        this.players = [];\n        this._triggers = new Map();\n        this._queue = [];\n        this._elementListeners = new Map();\n        this._hostClassName = 'ng-tns-' + id;\n        addClass(hostElement, this._hostClassName);\n    }\n    listen(element, name, phase, callback) {\n        if (!this._triggers.has(name)) {\n            throw missingTrigger(phase, name);\n        }\n        if (phase == null || phase.length == 0) {\n            throw missingEvent(name);\n        }\n        if (!isTriggerEventValid(phase)) {\n            throw unsupportedTriggerEvent(phase, name);\n        }\n        const listeners = getOrSetDefaultValue(this._elementListeners, element, []);\n        const data = { name, phase, callback };\n        listeners.push(data);\n        const triggersWithStates = getOrSetDefaultValue(this._engine.statesByElement, element, new Map());\n        if (!triggersWithStates.has(name)) {\n            addClass(element, NG_TRIGGER_CLASSNAME);\n            addClass(element, NG_TRIGGER_CLASSNAME + '-' + name);\n            triggersWithStates.set(name, DEFAULT_STATE_VALUE);\n        }\n        return () => {\n            // the event listener is removed AFTER the flush has occurred such\n            // that leave animations callbacks can fire (otherwise if the node\n            // is removed in between then the listeners would be deregistered)\n            this._engine.afterFlush(() => {\n                const index = listeners.indexOf(data);\n                if (index >= 0) {\n                    listeners.splice(index, 1);\n                }\n                if (!this._triggers.has(name)) {\n                    triggersWithStates.delete(name);\n                }\n            });\n        };\n    }\n    register(name, ast) {\n        if (this._triggers.has(name)) {\n            // throw\n            return false;\n        }\n        else {\n            this._triggers.set(name, ast);\n            return true;\n        }\n    }\n    _getTrigger(name) {\n        const trigger = this._triggers.get(name);\n        if (!trigger) {\n            throw unregisteredTrigger(name);\n        }\n        return trigger;\n    }\n    trigger(element, triggerName, value, defaultToFallback = true) {\n        const trigger = this._getTrigger(triggerName);\n        const player = new TransitionAnimationPlayer(this.id, triggerName, element);\n        let triggersWithStates = this._engine.statesByElement.get(element);\n        if (!triggersWithStates) {\n            addClass(element, NG_TRIGGER_CLASSNAME);\n            addClass(element, NG_TRIGGER_CLASSNAME + '-' + triggerName);\n            this._engine.statesByElement.set(element, triggersWithStates = new Map());\n        }\n        let fromState = triggersWithStates.get(triggerName);\n        const toState = new StateValue(value, this.id);\n        const isObj = value && value.hasOwnProperty('value');\n        if (!isObj && fromState) {\n            toState.absorbOptions(fromState.options);\n        }\n        triggersWithStates.set(triggerName, toState);\n        if (!fromState) {\n            fromState = DEFAULT_STATE_VALUE;\n        }\n        const isRemoval = toState.value === VOID_VALUE;\n        // normally this isn't reached by here, however, if an object expression\n        // is passed in then it may be a new object each time. Comparing the value\n        // is important since that will stay the same despite there being a new object.\n        // The removal arc here is special cased because the same element is triggered\n        // twice in the event that it contains animations on the outer/inner portions\n        // of the host container\n        if (!isRemoval && fromState.value === toState.value) {\n            // this means that despite the value not changing, some inner params\n            // have changed which means that the animation final styles need to be applied\n            if (!objEquals(fromState.params, toState.params)) {\n                const errors = [];\n                const fromStyles = trigger.matchStyles(fromState.value, fromState.params, errors);\n                const toStyles = trigger.matchStyles(toState.value, toState.params, errors);\n                if (errors.length) {\n                    this._engine.reportError(errors);\n                }\n                else {\n                    this._engine.afterFlush(() => {\n                        eraseStyles(element, fromStyles);\n                        setStyles(element, toStyles);\n                    });\n                }\n            }\n            return;\n        }\n        const playersOnElement = getOrSetDefaultValue(this._engine.playersByElement, element, []);\n        playersOnElement.forEach(player => {\n            // only remove the player if it is queued on the EXACT same trigger/namespace\n            // we only also deal with queued players here because if the animation has\n            // started then we want to keep the player alive until the flush happens\n            // (which is where the previousPlayers are passed into the new player)\n            if (player.namespaceId == this.id && player.triggerName == triggerName && player.queued) {\n                player.destroy();\n            }\n        });\n        let transition = trigger.matchTransition(fromState.value, toState.value, element, toState.params);\n        let isFallbackTransition = false;\n        if (!transition) {\n            if (!defaultToFallback)\n                return;\n            transition = trigger.fallbackTransition;\n            isFallbackTransition = true;\n        }\n        this._engine.totalQueuedPlayers++;\n        this._queue.push({ element, triggerName, transition, fromState, toState, player, isFallbackTransition });\n        if (!isFallbackTransition) {\n            addClass(element, QUEUED_CLASSNAME);\n            player.onStart(() => {\n                removeClass(element, QUEUED_CLASSNAME);\n            });\n        }\n        player.onDone(() => {\n            let index = this.players.indexOf(player);\n            if (index >= 0) {\n                this.players.splice(index, 1);\n            }\n            const players = this._engine.playersByElement.get(element);\n            if (players) {\n                let index = players.indexOf(player);\n                if (index >= 0) {\n                    players.splice(index, 1);\n                }\n            }\n        });\n        this.players.push(player);\n        playersOnElement.push(player);\n        return player;\n    }\n    deregister(name) {\n        this._triggers.delete(name);\n        this._engine.statesByElement.forEach(stateMap => stateMap.delete(name));\n        this._elementListeners.forEach((listeners, element) => {\n            this._elementListeners.set(element, listeners.filter(entry => {\n                return entry.name != name;\n            }));\n        });\n    }\n    clearElementCache(element) {\n        this._engine.statesByElement.delete(element);\n        this._elementListeners.delete(element);\n        const elementPlayers = this._engine.playersByElement.get(element);\n        if (elementPlayers) {\n            elementPlayers.forEach(player => player.destroy());\n            this._engine.playersByElement.delete(element);\n        }\n    }\n    _signalRemovalForInnerTriggers(rootElement, context) {\n        const elements = this._engine.driver.query(rootElement, NG_TRIGGER_SELECTOR, true);\n        // emulate a leave animation for all inner nodes within this node.\n        // If there are no animations found for any of the nodes then clear the cache\n        // for the element.\n        elements.forEach(elm => {\n            // this means that an inner remove() operation has already kicked off\n            // the animation on this element...\n            if (elm[REMOVAL_FLAG])\n                return;\n            const namespaces = this._engine.fetchNamespacesByElement(elm);\n            if (namespaces.size) {\n                namespaces.forEach(ns => ns.triggerLeaveAnimation(elm, context, false, true));\n            }\n            else {\n                this.clearElementCache(elm);\n            }\n        });\n        // If the child elements were removed along with the parent, their animations might not\n        // have completed. Clear all the elements from the cache so we don't end up with a memory leak.\n        this._engine.afterFlushAnimationsDone(() => elements.forEach(elm => this.clearElementCache(elm)));\n    }\n    triggerLeaveAnimation(element, context, destroyAfterComplete, defaultToFallback) {\n        const triggerStates = this._engine.statesByElement.get(element);\n        const previousTriggersValues = new Map();\n        if (triggerStates) {\n            const players = [];\n            triggerStates.forEach((state, triggerName) => {\n                previousTriggersValues.set(triggerName, state.value);\n                // this check is here in the event that an element is removed\n                // twice (both on the host level and the component level)\n                if (this._triggers.has(triggerName)) {\n                    const player = this.trigger(element, triggerName, VOID_VALUE, defaultToFallback);\n                    if (player) {\n                        players.push(player);\n                    }\n                }\n            });\n            if (players.length) {\n                this._engine.markElementAsRemoved(this.id, element, true, context, previousTriggersValues);\n                if (destroyAfterComplete) {\n                    optimizeGroupPlayer(players).onDone(() => this._engine.processLeaveNode(element));\n                }\n                return true;\n            }\n        }\n        return false;\n    }\n    prepareLeaveAnimationListeners(element) {\n        const listeners = this._elementListeners.get(element);\n        const elementStates = this._engine.statesByElement.get(element);\n        // if this statement fails then it means that the element was picked up\n        // by an earlier flush (or there are no listeners at all to track the leave).\n        if (listeners && elementStates) {\n            const visitedTriggers = new Set();\n            listeners.forEach(listener => {\n                const triggerName = listener.name;\n                if (visitedTriggers.has(triggerName))\n                    return;\n                visitedTriggers.add(triggerName);\n                const trigger = this._triggers.get(triggerName);\n                const transition = trigger.fallbackTransition;\n                const fromState = elementStates.get(triggerName) || DEFAULT_STATE_VALUE;\n                const toState = new StateValue(VOID_VALUE);\n                const player = new TransitionAnimationPlayer(this.id, triggerName, element);\n                this._engine.totalQueuedPlayers++;\n                this._queue.push({\n                    element,\n                    triggerName,\n                    transition,\n                    fromState,\n                    toState,\n                    player,\n                    isFallbackTransition: true\n                });\n            });\n        }\n    }\n    removeNode(element, context) {\n        const engine = this._engine;\n        if (element.childElementCount) {\n            this._signalRemovalForInnerTriggers(element, context);\n        }\n        // this means that a * => VOID animation was detected and kicked off\n        if (this.triggerLeaveAnimation(element, context, true))\n            return;\n        // find the player that is animating and make sure that the\n        // removal is delayed until that player has completed\n        let containsPotentialParentTransition = false;\n        if (engine.totalAnimations) {\n            const currentPlayers = engine.players.length ? engine.playersByQueriedElement.get(element) : [];\n            // when this `if statement` does not continue forward it means that\n            // a previous animation query has selected the current element and\n            // is animating it. In this situation want to continue forwards and\n            // allow the element to be queued up for animation later.\n            if (currentPlayers && currentPlayers.length) {\n                containsPotentialParentTransition = true;\n            }\n            else {\n                let parent = element;\n                while (parent = parent.parentNode) {\n                    const triggers = engine.statesByElement.get(parent);\n                    if (triggers) {\n                        containsPotentialParentTransition = true;\n                        break;\n                    }\n                }\n            }\n        }\n        // at this stage we know that the element will either get removed\n        // during flush or will be picked up by a parent query. Either way\n        // we need to fire the listeners for this element when it DOES get\n        // removed (once the query parent animation is done or after flush)\n        this.prepareLeaveAnimationListeners(element);\n        // whether or not a parent has an animation we need to delay the deferral of the leave\n        // operation until we have more information (which we do after flush() has been called)\n        if (containsPotentialParentTransition) {\n            engine.markElementAsRemoved(this.id, element, false, context);\n        }\n        else {\n            const removalFlag = element[REMOVAL_FLAG];\n            if (!removalFlag || removalFlag === NULL_REMOVAL_STATE) {\n                // we do this after the flush has occurred such\n                // that the callbacks can be fired\n                engine.afterFlush(() => this.clearElementCache(element));\n                engine.destroyInnerAnimations(element);\n                engine._onRemovalComplete(element, context);\n            }\n        }\n    }\n    insertNode(element, parent) {\n        addClass(element, this._hostClassName);\n    }\n    drainQueuedTransitions(microtaskId) {\n        const instructions = [];\n        this._queue.forEach(entry => {\n            const player = entry.player;\n            if (player.destroyed)\n                return;\n            const element = entry.element;\n            const listeners = this._elementListeners.get(element);\n            if (listeners) {\n                listeners.forEach((listener) => {\n                    if (listener.name == entry.triggerName) {\n                        const baseEvent = makeAnimationEvent(element, entry.triggerName, entry.fromState.value, entry.toState.value);\n                        baseEvent['_data'] = microtaskId;\n                        listenOnPlayer(entry.player, listener.phase, baseEvent, listener.callback);\n                    }\n                });\n            }\n            if (player.markedForDestroy) {\n                this._engine.afterFlush(() => {\n                    // now we can destroy the element properly since the event listeners have\n                    // been bound to the player\n                    player.destroy();\n                });\n            }\n            else {\n                instructions.push(entry);\n            }\n        });\n        this._queue = [];\n        return instructions.sort((a, b) => {\n            // if depCount == 0 them move to front\n            // otherwise if a contains b then move back\n            const d0 = a.transition.ast.depCount;\n            const d1 = b.transition.ast.depCount;\n            if (d0 == 0 || d1 == 0) {\n                return d0 - d1;\n            }\n            return this._engine.driver.containsElement(a.element, b.element) ? 1 : -1;\n        });\n    }\n    destroy(context) {\n        this.players.forEach(p => p.destroy());\n        this._signalRemovalForInnerTriggers(this.hostElement, context);\n    }\n    elementContainsData(element) {\n        let containsData = false;\n        if (this._elementListeners.has(element))\n            containsData = true;\n        containsData =\n            (this._queue.find(entry => entry.element === element) ? true : false) || containsData;\n        return containsData;\n    }\n}\nclass TransitionAnimationEngine {\n    /** @internal */\n    _onRemovalComplete(element, context) {\n        this.onRemovalComplete(element, context);\n    }\n    constructor(bodyNode, driver, _normalizer) {\n        this.bodyNode = bodyNode;\n        this.driver = driver;\n        this._normalizer = _normalizer;\n        this.players = [];\n        this.newHostElements = new Map();\n        this.playersByElement = new Map();\n        this.playersByQueriedElement = new Map();\n        this.statesByElement = new Map();\n        this.disabledNodes = new Set();\n        this.totalAnimations = 0;\n        this.totalQueuedPlayers = 0;\n        this._namespaceLookup = {};\n        this._namespaceList = [];\n        this._flushFns = [];\n        this._whenQuietFns = [];\n        this.namespacesByHostElement = new Map();\n        this.collectedEnterElements = [];\n        this.collectedLeaveElements = [];\n        // this method is designed to be overridden by the code that uses this engine\n        this.onRemovalComplete = (element, context) => { };\n    }\n    get queuedPlayers() {\n        const players = [];\n        this._namespaceList.forEach(ns => {\n            ns.players.forEach(player => {\n                if (player.queued) {\n                    players.push(player);\n                }\n            });\n        });\n        return players;\n    }\n    createNamespace(namespaceId, hostElement) {\n        const ns = new AnimationTransitionNamespace(namespaceId, hostElement, this);\n        if (this.bodyNode && this.driver.containsElement(this.bodyNode, hostElement)) {\n            this._balanceNamespaceList(ns, hostElement);\n        }\n        else {\n            // defer this later until flush during when the host element has\n            // been inserted so that we know exactly where to place it in\n            // the namespace list\n            this.newHostElements.set(hostElement, ns);\n            // given that this host element is a part of the animation code, it\n            // may or may not be inserted by a parent node that is of an\n            // animation renderer type. If this happens then we can still have\n            // access to this item when we query for :enter nodes. If the parent\n            // is a renderer then the set data-structure will normalize the entry\n            this.collectEnterElement(hostElement);\n        }\n        return this._namespaceLookup[namespaceId] = ns;\n    }\n    _balanceNamespaceList(ns, hostElement) {\n        const namespaceList = this._namespaceList;\n        const namespacesByHostElement = this.namespacesByHostElement;\n        const limit = namespaceList.length - 1;\n        if (limit >= 0) {\n            let found = false;\n            // Find the closest ancestor with an existing namespace so we can then insert `ns` after it,\n            // establishing a top-down ordering of namespaces in `this._namespaceList`.\n            let ancestor = this.driver.getParentElement(hostElement);\n            while (ancestor) {\n                const ancestorNs = namespacesByHostElement.get(ancestor);\n                if (ancestorNs) {\n                    // An animation namespace has been registered for this ancestor, so we insert `ns`\n                    // right after it to establish top-down ordering of animation namespaces.\n                    const index = namespaceList.indexOf(ancestorNs);\n                    namespaceList.splice(index + 1, 0, ns);\n                    found = true;\n                    break;\n                }\n                ancestor = this.driver.getParentElement(ancestor);\n            }\n            if (!found) {\n                // No namespace exists that is an ancestor of `ns`, so `ns` is inserted at the front to\n                // ensure that any existing descendants are ordered after `ns`, retaining the desired\n                // top-down ordering.\n                namespaceList.unshift(ns);\n            }\n        }\n        else {\n            namespaceList.push(ns);\n        }\n        namespacesByHostElement.set(hostElement, ns);\n        return ns;\n    }\n    register(namespaceId, hostElement) {\n        let ns = this._namespaceLookup[namespaceId];\n        if (!ns) {\n            ns = this.createNamespace(namespaceId, hostElement);\n        }\n        return ns;\n    }\n    registerTrigger(namespaceId, name, trigger) {\n        let ns = this._namespaceLookup[namespaceId];\n        if (ns && ns.register(name, trigger)) {\n            this.totalAnimations++;\n        }\n    }\n    destroy(namespaceId, context) {\n        if (!namespaceId)\n            return;\n        const ns = this._fetchNamespace(namespaceId);\n        this.afterFlush(() => {\n            this.namespacesByHostElement.delete(ns.hostElement);\n            delete this._namespaceLookup[namespaceId];\n            const index = this._namespaceList.indexOf(ns);\n            if (index >= 0) {\n                this._namespaceList.splice(index, 1);\n            }\n        });\n        this.afterFlushAnimationsDone(() => ns.destroy(context));\n    }\n    _fetchNamespace(id) {\n        return this._namespaceLookup[id];\n    }\n    fetchNamespacesByElement(element) {\n        // normally there should only be one namespace per element, however\n        // if @triggers are placed on both the component element and then\n        // its host element (within the component code) then there will be\n        // two namespaces returned. We use a set here to simply deduplicate\n        // the namespaces in case (for the reason described above) there are multiple triggers\n        const namespaces = new Set();\n        const elementStates = this.statesByElement.get(element);\n        if (elementStates) {\n            for (let stateValue of elementStates.values()) {\n                if (stateValue.namespaceId) {\n                    const ns = this._fetchNamespace(stateValue.namespaceId);\n                    if (ns) {\n                        namespaces.add(ns);\n                    }\n                }\n            }\n        }\n        return namespaces;\n    }\n    trigger(namespaceId, element, name, value) {\n        if (isElementNode(element)) {\n            const ns = this._fetchNamespace(namespaceId);\n            if (ns) {\n                ns.trigger(element, name, value);\n                return true;\n            }\n        }\n        return false;\n    }\n    insertNode(namespaceId, element, parent, insertBefore) {\n        if (!isElementNode(element))\n            return;\n        // special case for when an element is removed and reinserted (move operation)\n        // when this occurs we do not want to use the element for deletion later\n        const details = element[REMOVAL_FLAG];\n        if (details && details.setForRemoval) {\n            details.setForRemoval = false;\n            details.setForMove = true;\n            const index = this.collectedLeaveElements.indexOf(element);\n            if (index >= 0) {\n                this.collectedLeaveElements.splice(index, 1);\n            }\n        }\n        // in the event that the namespaceId is blank then the caller\n        // code does not contain any animation code in it, but it is\n        // just being called so that the node is marked as being inserted\n        if (namespaceId) {\n            const ns = this._fetchNamespace(namespaceId);\n            // This if-statement is a workaround for router issue #21947.\n            // The router sometimes hits a race condition where while a route\n            // is being instantiated a new navigation arrives, triggering leave\n            // animation of DOM that has not been fully initialized, until this\n            // is resolved, we need to handle the scenario when DOM is not in a\n            // consistent state during the animation.\n            if (ns) {\n                ns.insertNode(element, parent);\n            }\n        }\n        // only *directives and host elements are inserted before\n        if (insertBefore) {\n            this.collectEnterElement(element);\n        }\n    }\n    collectEnterElement(element) {\n        this.collectedEnterElements.push(element);\n    }\n    markElementAsDisabled(element, value) {\n        if (value) {\n            if (!this.disabledNodes.has(element)) {\n                this.disabledNodes.add(element);\n                addClass(element, DISABLED_CLASSNAME);\n            }\n        }\n        else if (this.disabledNodes.has(element)) {\n            this.disabledNodes.delete(element);\n            removeClass(element, DISABLED_CLASSNAME);\n        }\n    }\n    removeNode(namespaceId, element, isHostElement, context) {\n        if (isElementNode(element)) {\n            const ns = namespaceId ? this._fetchNamespace(namespaceId) : null;\n            if (ns) {\n                ns.removeNode(element, context);\n            }\n            else {\n                this.markElementAsRemoved(namespaceId, element, false, context);\n            }\n            if (isHostElement) {\n                const hostNS = this.namespacesByHostElement.get(element);\n                if (hostNS && hostNS.id !== namespaceId) {\n                    hostNS.removeNode(element, context);\n                }\n            }\n        }\n        else {\n            this._onRemovalComplete(element, context);\n        }\n    }\n    markElementAsRemoved(namespaceId, element, hasAnimation, context, previousTriggersValues) {\n        this.collectedLeaveElements.push(element);\n        element[REMOVAL_FLAG] = {\n            namespaceId,\n            setForRemoval: context,\n            hasAnimation,\n            removedBeforeQueried: false,\n            previousTriggersValues\n        };\n    }\n    listen(namespaceId, element, name, phase, callback) {\n        if (isElementNode(element)) {\n            return this._fetchNamespace(namespaceId).listen(element, name, phase, callback);\n        }\n        return () => { };\n    }\n    _buildInstruction(entry, subTimelines, enterClassName, leaveClassName, skipBuildAst) {\n        return entry.transition.build(this.driver, entry.element, entry.fromState.value, entry.toState.value, enterClassName, leaveClassName, entry.fromState.options, entry.toState.options, subTimelines, skipBuildAst);\n    }\n    destroyInnerAnimations(containerElement) {\n        let elements = this.driver.query(containerElement, NG_TRIGGER_SELECTOR, true);\n        elements.forEach(element => this.destroyActiveAnimationsForElement(element));\n        if (this.playersByQueriedElement.size == 0)\n            return;\n        elements = this.driver.query(containerElement, NG_ANIMATING_SELECTOR, true);\n        elements.forEach(element => this.finishActiveQueriedAnimationOnElement(element));\n    }\n    destroyActiveAnimationsForElement(element) {\n        const players = this.playersByElement.get(element);\n        if (players) {\n            players.forEach(player => {\n                // special case for when an element is set for destruction, but hasn't started.\n                // in this situation we want to delay the destruction until the flush occurs\n                // so that any event listeners attached to the player are triggered.\n                if (player.queued) {\n                    player.markedForDestroy = true;\n                }\n                else {\n                    player.destroy();\n                }\n            });\n        }\n    }\n    finishActiveQueriedAnimationOnElement(element) {\n        const players = this.playersByQueriedElement.get(element);\n        if (players) {\n            players.forEach(player => player.finish());\n        }\n    }\n    whenRenderingDone() {\n        return new Promise(resolve => {\n            if (this.players.length) {\n                return optimizeGroupPlayer(this.players).onDone(() => resolve());\n            }\n            else {\n                resolve();\n            }\n        });\n    }\n    processLeaveNode(element) {\n        const details = element[REMOVAL_FLAG];\n        if (details && details.setForRemoval) {\n            // this will prevent it from removing it twice\n            element[REMOVAL_FLAG] = NULL_REMOVAL_STATE;\n            if (details.namespaceId) {\n                this.destroyInnerAnimations(element);\n                const ns = this._fetchNamespace(details.namespaceId);\n                if (ns) {\n                    ns.clearElementCache(element);\n                }\n            }\n            this._onRemovalComplete(element, details.setForRemoval);\n        }\n        if (element.classList?.contains(DISABLED_CLASSNAME)) {\n            this.markElementAsDisabled(element, false);\n        }\n        this.driver.query(element, DISABLED_SELECTOR, true).forEach(node => {\n            this.markElementAsDisabled(node, false);\n        });\n    }\n    flush(microtaskId = -1) {\n        let players = [];\n        if (this.newHostElements.size) {\n            this.newHostElements.forEach((ns, element) => this._balanceNamespaceList(ns, element));\n            this.newHostElements.clear();\n        }\n        if (this.totalAnimations && this.collectedEnterElements.length) {\n            for (let i = 0; i < this.collectedEnterElements.length; i++) {\n                const elm = this.collectedEnterElements[i];\n                addClass(elm, STAR_CLASSNAME);\n            }\n        }\n        if (this._namespaceList.length &&\n            (this.totalQueuedPlayers || this.collectedLeaveElements.length)) {\n            const cleanupFns = [];\n            try {\n                players = this._flushAnimations(cleanupFns, microtaskId);\n            }\n            finally {\n                for (let i = 0; i < cleanupFns.length; i++) {\n                    cleanupFns[i]();\n                }\n            }\n        }\n        else {\n            for (let i = 0; i < this.collectedLeaveElements.length; i++) {\n                const element = this.collectedLeaveElements[i];\n                this.processLeaveNode(element);\n            }\n        }\n        this.totalQueuedPlayers = 0;\n        this.collectedEnterElements.length = 0;\n        this.collectedLeaveElements.length = 0;\n        this._flushFns.forEach(fn => fn());\n        this._flushFns = [];\n        if (this._whenQuietFns.length) {\n            // we move these over to a variable so that\n            // if any new callbacks are registered in another\n            // flush they do not populate the existing set\n            const quietFns = this._whenQuietFns;\n            this._whenQuietFns = [];\n            if (players.length) {\n                optimizeGroupPlayer(players).onDone(() => {\n                    quietFns.forEach(fn => fn());\n                });\n            }\n            else {\n                quietFns.forEach(fn => fn());\n            }\n        }\n    }\n    reportError(errors) {\n        throw triggerTransitionsFailed(errors);\n    }\n    _flushAnimations(cleanupFns, microtaskId) {\n        const subTimelines = new ElementInstructionMap();\n        const skippedPlayers = [];\n        const skippedPlayersMap = new Map();\n        const queuedInstructions = [];\n        const queriedElements = new Map();\n        const allPreStyleElements = new Map();\n        const allPostStyleElements = new Map();\n        const disabledElementsSet = new Set();\n        this.disabledNodes.forEach(node => {\n            disabledElementsSet.add(node);\n            const nodesThatAreDisabled = this.driver.query(node, QUEUED_SELECTOR, true);\n            for (let i = 0; i < nodesThatAreDisabled.length; i++) {\n                disabledElementsSet.add(nodesThatAreDisabled[i]);\n            }\n        });\n        const bodyNode = this.bodyNode;\n        const allTriggerElements = Array.from(this.statesByElement.keys());\n        const enterNodeMap = buildRootMap(allTriggerElements, this.collectedEnterElements);\n        // this must occur before the instructions are built below such that\n        // the :enter queries match the elements (since the timeline queries\n        // are fired during instruction building).\n        const enterNodeMapIds = new Map();\n        let i = 0;\n        enterNodeMap.forEach((nodes, root) => {\n            const className = ENTER_CLASSNAME + i++;\n            enterNodeMapIds.set(root, className);\n            nodes.forEach(node => addClass(node, className));\n        });\n        const allLeaveNodes = [];\n        const mergedLeaveNodes = new Set();\n        const leaveNodesWithoutAnimations = new Set();\n        for (let i = 0; i < this.collectedLeaveElements.length; i++) {\n            const element = this.collectedLeaveElements[i];\n            const details = element[REMOVAL_FLAG];\n            if (details && details.setForRemoval) {\n                allLeaveNodes.push(element);\n                mergedLeaveNodes.add(element);\n                if (details.hasAnimation) {\n                    this.driver.query(element, STAR_SELECTOR, true).forEach(elm => mergedLeaveNodes.add(elm));\n                }\n                else {\n                    leaveNodesWithoutAnimations.add(element);\n                }\n            }\n        }\n        const leaveNodeMapIds = new Map();\n        const leaveNodeMap = buildRootMap(allTriggerElements, Array.from(mergedLeaveNodes));\n        leaveNodeMap.forEach((nodes, root) => {\n            const className = LEAVE_CLASSNAME + i++;\n            leaveNodeMapIds.set(root, className);\n            nodes.forEach(node => addClass(node, className));\n        });\n        cleanupFns.push(() => {\n            enterNodeMap.forEach((nodes, root) => {\n                const className = enterNodeMapIds.get(root);\n                nodes.forEach(node => removeClass(node, className));\n            });\n            leaveNodeMap.forEach((nodes, root) => {\n                const className = leaveNodeMapIds.get(root);\n                nodes.forEach(node => removeClass(node, className));\n            });\n            allLeaveNodes.forEach(element => {\n                this.processLeaveNode(element);\n            });\n        });\n        const allPlayers = [];\n        const erroneousTransitions = [];\n        for (let i = this._namespaceList.length - 1; i >= 0; i--) {\n            const ns = this._namespaceList[i];\n            ns.drainQueuedTransitions(microtaskId).forEach(entry => {\n                const player = entry.player;\n                const element = entry.element;\n                allPlayers.push(player);\n                if (this.collectedEnterElements.length) {\n                    const details = element[REMOVAL_FLAG];\n                    // animations for move operations (elements being removed and reinserted,\n                    // e.g. when the order of an *ngFor list changes) are currently not supported\n                    if (details && details.setForMove) {\n                        if (details.previousTriggersValues &&\n                            details.previousTriggersValues.has(entry.triggerName)) {\n                            const previousValue = details.previousTriggersValues.get(entry.triggerName);\n                            // we need to restore the previous trigger value since the element has\n                            // only been moved and hasn't actually left the DOM\n                            const triggersWithStates = this.statesByElement.get(entry.element);\n                            if (triggersWithStates && triggersWithStates.has(entry.triggerName)) {\n                                const state = triggersWithStates.get(entry.triggerName);\n                                state.value = previousValue;\n                                triggersWithStates.set(entry.triggerName, state);\n                            }\n                        }\n                        player.destroy();\n                        return;\n                    }\n                }\n                const nodeIsOrphaned = !bodyNode || !this.driver.containsElement(bodyNode, element);\n                const leaveClassName = leaveNodeMapIds.get(element);\n                const enterClassName = enterNodeMapIds.get(element);\n                const instruction = this._buildInstruction(entry, subTimelines, enterClassName, leaveClassName, nodeIsOrphaned);\n                if (instruction.errors && instruction.errors.length) {\n                    erroneousTransitions.push(instruction);\n                    return;\n                }\n                // even though the element may not be in the DOM, it may still\n                // be added at a later point (due to the mechanics of content\n                // projection and/or dynamic component insertion) therefore it's\n                // important to still style the element.\n                if (nodeIsOrphaned) {\n                    player.onStart(() => eraseStyles(element, instruction.fromStyles));\n                    player.onDestroy(() => setStyles(element, instruction.toStyles));\n                    skippedPlayers.push(player);\n                    return;\n                }\n                // if an unmatched transition is queued and ready to go\n                // then it SHOULD NOT render an animation and cancel the\n                // previously running animations.\n                if (entry.isFallbackTransition) {\n                    player.onStart(() => eraseStyles(element, instruction.fromStyles));\n                    player.onDestroy(() => setStyles(element, instruction.toStyles));\n                    skippedPlayers.push(player);\n                    return;\n                }\n                // this means that if a parent animation uses this animation as a sub-trigger\n                // then it will instruct the timeline builder not to add a player delay, but\n                // instead stretch the first keyframe gap until the animation starts. This is\n                // important in order to prevent extra initialization styles from being\n                // required by the user for the animation.\n                const timelines = [];\n                instruction.timelines.forEach(tl => {\n                    tl.stretchStartingKeyframe = true;\n                    if (!this.disabledNodes.has(tl.element)) {\n                        timelines.push(tl);\n                    }\n                });\n                instruction.timelines = timelines;\n                subTimelines.append(element, instruction.timelines);\n                const tuple = { instruction, player, element };\n                queuedInstructions.push(tuple);\n                instruction.queriedElements.forEach(element => getOrSetDefaultValue(queriedElements, element, []).push(player));\n                instruction.preStyleProps.forEach((stringMap, element) => {\n                    if (stringMap.size) {\n                        let setVal = allPreStyleElements.get(element);\n                        if (!setVal) {\n                            allPreStyleElements.set(element, setVal = new Set());\n                        }\n                        stringMap.forEach((_, prop) => setVal.add(prop));\n                    }\n                });\n                instruction.postStyleProps.forEach((stringMap, element) => {\n                    let setVal = allPostStyleElements.get(element);\n                    if (!setVal) {\n                        allPostStyleElements.set(element, setVal = new Set());\n                    }\n                    stringMap.forEach((_, prop) => setVal.add(prop));\n                });\n            });\n        }\n        if (erroneousTransitions.length) {\n            const errors = [];\n            erroneousTransitions.forEach(instruction => {\n                errors.push(transitionFailed(instruction.triggerName, instruction.errors));\n            });\n            allPlayers.forEach(player => player.destroy());\n            this.reportError(errors);\n        }\n        const allPreviousPlayersMap = new Map();\n        // this map tells us which element in the DOM tree is contained by\n        // which animation. Further down this map will get populated once\n        // the players are built and in doing so we can use it to efficiently\n        // figure out if a sub player is skipped due to a parent player having priority.\n        const animationElementMap = new Map();\n        queuedInstructions.forEach(entry => {\n            const element = entry.element;\n            if (subTimelines.has(element)) {\n                animationElementMap.set(element, element);\n                this._beforeAnimationBuild(entry.player.namespaceId, entry.instruction, allPreviousPlayersMap);\n            }\n        });\n        skippedPlayers.forEach(player => {\n            const element = player.element;\n            const previousPlayers = this._getPreviousPlayers(element, false, player.namespaceId, player.triggerName, null);\n            previousPlayers.forEach(prevPlayer => {\n                getOrSetDefaultValue(allPreviousPlayersMap, element, []).push(prevPlayer);\n                prevPlayer.destroy();\n            });\n        });\n        // this is a special case for nodes that will be removed either by\n        // having their own leave animations or by being queried in a container\n        // that will be removed once a parent animation is complete. The idea\n        // here is that * styles must be identical to ! styles because of\n        // backwards compatibility (* is also filled in by default in many places).\n        // Otherwise * styles will return an empty value or \"auto\" since the element\n        // passed to getComputedStyle will not be visible (since * === destination)\n        const replaceNodes = allLeaveNodes.filter(node => {\n            return replacePostStylesAsPre(node, allPreStyleElements, allPostStyleElements);\n        });\n        // POST STAGE: fill the * styles\n        const postStylesMap = new Map();\n        const allLeaveQueriedNodes = cloakAndComputeStyles(postStylesMap, this.driver, leaveNodesWithoutAnimations, allPostStyleElements, AUTO_STYLE);\n        allLeaveQueriedNodes.forEach(node => {\n            if (replacePostStylesAsPre(node, allPreStyleElements, allPostStyleElements)) {\n                replaceNodes.push(node);\n            }\n        });\n        // PRE STAGE: fill the ! styles\n        const preStylesMap = new Map();\n        enterNodeMap.forEach((nodes, root) => {\n            cloakAndComputeStyles(preStylesMap, this.driver, new Set(nodes), allPreStyleElements, ɵPRE_STYLE);\n        });\n        replaceNodes.forEach(node => {\n            const post = postStylesMap.get(node);\n            const pre = preStylesMap.get(node);\n            postStylesMap.set(node, new Map([...Array.from(post?.entries() ?? []), ...Array.from(pre?.entries() ?? [])]));\n        });\n        const rootPlayers = [];\n        const subPlayers = [];\n        const NO_PARENT_ANIMATION_ELEMENT_DETECTED = {};\n        queuedInstructions.forEach(entry => {\n            const { element, player, instruction } = entry;\n            // this means that it was never consumed by a parent animation which\n            // means that it is independent and therefore should be set for animation\n            if (subTimelines.has(element)) {\n                if (disabledElementsSet.has(element)) {\n                    player.onDestroy(() => setStyles(element, instruction.toStyles));\n                    player.disabled = true;\n                    player.overrideTotalTime(instruction.totalTime);\n                    skippedPlayers.push(player);\n                    return;\n                }\n                // this will flow up the DOM and query the map to figure out\n                // if a parent animation has priority over it. In the situation\n                // that a parent is detected then it will cancel the loop. If\n                // nothing is detected, or it takes a few hops to find a parent,\n                // then it will fill in the missing nodes and signal them as having\n                // a detected parent (or a NO_PARENT value via a special constant).\n                let parentWithAnimation = NO_PARENT_ANIMATION_ELEMENT_DETECTED;\n                if (animationElementMap.size > 1) {\n                    let elm = element;\n                    const parentsToAdd = [];\n                    while (elm = elm.parentNode) {\n                        const detectedParent = animationElementMap.get(elm);\n                        if (detectedParent) {\n                            parentWithAnimation = detectedParent;\n                            break;\n                        }\n                        parentsToAdd.push(elm);\n                    }\n                    parentsToAdd.forEach(parent => animationElementMap.set(parent, parentWithAnimation));\n                }\n                const innerPlayer = this._buildAnimation(player.namespaceId, instruction, allPreviousPlayersMap, skippedPlayersMap, preStylesMap, postStylesMap);\n                player.setRealPlayer(innerPlayer);\n                if (parentWithAnimation === NO_PARENT_ANIMATION_ELEMENT_DETECTED) {\n                    rootPlayers.push(player);\n                }\n                else {\n                    const parentPlayers = this.playersByElement.get(parentWithAnimation);\n                    if (parentPlayers && parentPlayers.length) {\n                        player.parentPlayer = optimizeGroupPlayer(parentPlayers);\n                    }\n                    skippedPlayers.push(player);\n                }\n            }\n            else {\n                eraseStyles(element, instruction.fromStyles);\n                player.onDestroy(() => setStyles(element, instruction.toStyles));\n                // there still might be a ancestor player animating this\n                // element therefore we will still add it as a sub player\n                // even if its animation may be disabled\n                subPlayers.push(player);\n                if (disabledElementsSet.has(element)) {\n                    skippedPlayers.push(player);\n                }\n            }\n        });\n        // find all of the sub players' corresponding inner animation players\n        subPlayers.forEach(player => {\n            // even if no players are found for a sub animation it\n            // will still complete itself after the next tick since it's Noop\n            const playersForElement = skippedPlayersMap.get(player.element);\n            if (playersForElement && playersForElement.length) {\n                const innerPlayer = optimizeGroupPlayer(playersForElement);\n                player.setRealPlayer(innerPlayer);\n            }\n        });\n        // the reason why we don't actually play the animation is\n        // because all that a skipped player is designed to do is to\n        // fire the start/done transition callback events\n        skippedPlayers.forEach(player => {\n            if (player.parentPlayer) {\n                player.syncPlayerEvents(player.parentPlayer);\n            }\n            else {\n                player.destroy();\n            }\n        });\n        // run through all of the queued removals and see if they\n        // were picked up by a query. If not then perform the removal\n        // operation right away unless a parent animation is ongoing.\n        for (let i = 0; i < allLeaveNodes.length; i++) {\n            const element = allLeaveNodes[i];\n            const details = element[REMOVAL_FLAG];\n            removeClass(element, LEAVE_CLASSNAME);\n            // this means the element has a removal animation that is being\n            // taken care of and therefore the inner elements will hang around\n            // until that animation is over (or the parent queried animation)\n            if (details && details.hasAnimation)\n                continue;\n            let players = [];\n            // if this element is queried or if it contains queried children\n            // then we want for the element not to be removed from the page\n            // until the queried animations have finished\n            if (queriedElements.size) {\n                let queriedPlayerResults = queriedElements.get(element);\n                if (queriedPlayerResults && queriedPlayerResults.length) {\n                    players.push(...queriedPlayerResults);\n                }\n                let queriedInnerElements = this.driver.query(element, NG_ANIMATING_SELECTOR, true);\n                for (let j = 0; j < queriedInnerElements.length; j++) {\n                    let queriedPlayers = queriedElements.get(queriedInnerElements[j]);\n                    if (queriedPlayers && queriedPlayers.length) {\n                        players.push(...queriedPlayers);\n                    }\n                }\n            }\n            const activePlayers = players.filter(p => !p.destroyed);\n            if (activePlayers.length) {\n                removeNodesAfterAnimationDone(this, element, activePlayers);\n            }\n            else {\n                this.processLeaveNode(element);\n            }\n        }\n        // this is required so the cleanup method doesn't remove them\n        allLeaveNodes.length = 0;\n        rootPlayers.forEach(player => {\n            this.players.push(player);\n            player.onDone(() => {\n                player.destroy();\n                const index = this.players.indexOf(player);\n                this.players.splice(index, 1);\n            });\n            player.play();\n        });\n        return rootPlayers;\n    }\n    elementContainsData(namespaceId, element) {\n        let containsData = false;\n        const details = element[REMOVAL_FLAG];\n        if (details && details.setForRemoval)\n            containsData = true;\n        if (this.playersByElement.has(element))\n            containsData = true;\n        if (this.playersByQueriedElement.has(element))\n            containsData = true;\n        if (this.statesByElement.has(element))\n            containsData = true;\n        return this._fetchNamespace(namespaceId).elementContainsData(element) || containsData;\n    }\n    afterFlush(callback) {\n        this._flushFns.push(callback);\n    }\n    afterFlushAnimationsDone(callback) {\n        this._whenQuietFns.push(callback);\n    }\n    _getPreviousPlayers(element, isQueriedElement, namespaceId, triggerName, toStateValue) {\n        let players = [];\n        if (isQueriedElement) {\n            const queriedElementPlayers = this.playersByQueriedElement.get(element);\n            if (queriedElementPlayers) {\n                players = queriedElementPlayers;\n            }\n        }\n        else {\n            const elementPlayers = this.playersByElement.get(element);\n            if (elementPlayers) {\n                const isRemovalAnimation = !toStateValue || toStateValue == VOID_VALUE;\n                elementPlayers.forEach(player => {\n                    if (player.queued)\n                        return;\n                    if (!isRemovalAnimation && player.triggerName != triggerName)\n                        return;\n                    players.push(player);\n                });\n            }\n        }\n        if (namespaceId || triggerName) {\n            players = players.filter(player => {\n                if (namespaceId && namespaceId != player.namespaceId)\n                    return false;\n                if (triggerName && triggerName != player.triggerName)\n                    return false;\n                return true;\n            });\n        }\n        return players;\n    }\n    _beforeAnimationBuild(namespaceId, instruction, allPreviousPlayersMap) {\n        const triggerName = instruction.triggerName;\n        const rootElement = instruction.element;\n        // when a removal animation occurs, ALL previous players are collected\n        // and destroyed (even if they are outside of the current namespace)\n        const targetNameSpaceId = instruction.isRemovalTransition ? undefined : namespaceId;\n        const targetTriggerName = instruction.isRemovalTransition ? undefined : triggerName;\n        for (const timelineInstruction of instruction.timelines) {\n            const element = timelineInstruction.element;\n            const isQueriedElement = element !== rootElement;\n            const players = getOrSetDefaultValue(allPreviousPlayersMap, element, []);\n            const previousPlayers = this._getPreviousPlayers(element, isQueriedElement, targetNameSpaceId, targetTriggerName, instruction.toState);\n            previousPlayers.forEach(player => {\n                const realPlayer = player.getRealPlayer();\n                if (realPlayer.beforeDestroy) {\n                    realPlayer.beforeDestroy();\n                }\n                player.destroy();\n                players.push(player);\n            });\n        }\n        // this needs to be done so that the PRE/POST styles can be\n        // computed properly without interfering with the previous animation\n        eraseStyles(rootElement, instruction.fromStyles);\n    }\n    _buildAnimation(namespaceId, instruction, allPreviousPlayersMap, skippedPlayersMap, preStylesMap, postStylesMap) {\n        const triggerName = instruction.triggerName;\n        const rootElement = instruction.element;\n        // we first run this so that the previous animation player\n        // data can be passed into the successive animation players\n        const allQueriedPlayers = [];\n        const allConsumedElements = new Set();\n        const allSubElements = new Set();\n        const allNewPlayers = instruction.timelines.map(timelineInstruction => {\n            const element = timelineInstruction.element;\n            allConsumedElements.add(element);\n            // FIXME (matsko): make sure to-be-removed animations are removed properly\n            const details = element[REMOVAL_FLAG];\n            if (details && details.removedBeforeQueried)\n                return new NoopAnimationPlayer(timelineInstruction.duration, timelineInstruction.delay);\n            const isQueriedElement = element !== rootElement;\n            const previousPlayers = flattenGroupPlayers((allPreviousPlayersMap.get(element) || EMPTY_PLAYER_ARRAY)\n                .map(p => p.getRealPlayer()))\n                .filter(p => {\n                // the `element` is not apart of the AnimationPlayer definition, but\n                // Mock/WebAnimations\n                // use the element within their implementation. This will be added in Angular5 to\n                // AnimationPlayer\n                const pp = p;\n                return pp.element ? pp.element === element : false;\n            });\n            const preStyles = preStylesMap.get(element);\n            const postStyles = postStylesMap.get(element);\n            const keyframes = normalizeKeyframes$1(this.driver, this._normalizer, element, timelineInstruction.keyframes, preStyles, postStyles);\n            const player = this._buildPlayer(timelineInstruction, keyframes, previousPlayers);\n            // this means that this particular player belongs to a sub trigger. It is\n            // important that we match this player up with the corresponding (@trigger.listener)\n            if (timelineInstruction.subTimeline && skippedPlayersMap) {\n                allSubElements.add(element);\n            }\n            if (isQueriedElement) {\n                const wrappedPlayer = new TransitionAnimationPlayer(namespaceId, triggerName, element);\n                wrappedPlayer.setRealPlayer(player);\n                allQueriedPlayers.push(wrappedPlayer);\n            }\n            return player;\n        });\n        allQueriedPlayers.forEach(player => {\n            getOrSetDefaultValue(this.playersByQueriedElement, player.element, []).push(player);\n            player.onDone(() => deleteOrUnsetInMap(this.playersByQueriedElement, player.element, player));\n        });\n        allConsumedElements.forEach(element => addClass(element, NG_ANIMATING_CLASSNAME));\n        const player = optimizeGroupPlayer(allNewPlayers);\n        player.onDestroy(() => {\n            allConsumedElements.forEach(element => removeClass(element, NG_ANIMATING_CLASSNAME));\n            setStyles(rootElement, instruction.toStyles);\n        });\n        // this basically makes all of the callbacks for sub element animations\n        // be dependent on the upper players for when they finish\n        allSubElements.forEach(element => {\n            getOrSetDefaultValue(skippedPlayersMap, element, []).push(player);\n        });\n        return player;\n    }\n    _buildPlayer(instruction, keyframes, previousPlayers) {\n        if (keyframes.length > 0) {\n            return this.driver.animate(instruction.element, keyframes, instruction.duration, instruction.delay, instruction.easing, previousPlayers);\n        }\n        // special case for when an empty transition|definition is provided\n        // ... there is no point in rendering an empty animation\n        return new NoopAnimationPlayer(instruction.duration, instruction.delay);\n    }\n}\nclass TransitionAnimationPlayer {\n    constructor(namespaceId, triggerName, element) {\n        this.namespaceId = namespaceId;\n        this.triggerName = triggerName;\n        this.element = element;\n        this._player = new NoopAnimationPlayer();\n        this._containsRealPlayer = false;\n        this._queuedCallbacks = new Map();\n        this.destroyed = false;\n        this.parentPlayer = null;\n        this.markedForDestroy = false;\n        this.disabled = false;\n        this.queued = true;\n        this.totalTime = 0;\n    }\n    setRealPlayer(player) {\n        if (this._containsRealPlayer)\n            return;\n        this._player = player;\n        this._queuedCallbacks.forEach((callbacks, phase) => {\n            callbacks.forEach(callback => listenOnPlayer(player, phase, undefined, callback));\n        });\n        this._queuedCallbacks.clear();\n        this._containsRealPlayer = true;\n        this.overrideTotalTime(player.totalTime);\n        this.queued = false;\n    }\n    getRealPlayer() {\n        return this._player;\n    }\n    overrideTotalTime(totalTime) {\n        this.totalTime = totalTime;\n    }\n    syncPlayerEvents(player) {\n        const p = this._player;\n        if (p.triggerCallback) {\n            player.onStart(() => p.triggerCallback('start'));\n        }\n        player.onDone(() => this.finish());\n        player.onDestroy(() => this.destroy());\n    }\n    _queueEvent(name, callback) {\n        getOrSetDefaultValue(this._queuedCallbacks, name, []).push(callback);\n    }\n    onDone(fn) {\n        if (this.queued) {\n            this._queueEvent('done', fn);\n        }\n        this._player.onDone(fn);\n    }\n    onStart(fn) {\n        if (this.queued) {\n            this._queueEvent('start', fn);\n        }\n        this._player.onStart(fn);\n    }\n    onDestroy(fn) {\n        if (this.queued) {\n            this._queueEvent('destroy', fn);\n        }\n        this._player.onDestroy(fn);\n    }\n    init() {\n        this._player.init();\n    }\n    hasStarted() {\n        return this.queued ? false : this._player.hasStarted();\n    }\n    play() {\n        !this.queued && this._player.play();\n    }\n    pause() {\n        !this.queued && this._player.pause();\n    }\n    restart() {\n        !this.queued && this._player.restart();\n    }\n    finish() {\n        this._player.finish();\n    }\n    destroy() {\n        this.destroyed = true;\n        this._player.destroy();\n    }\n    reset() {\n        !this.queued && this._player.reset();\n    }\n    setPosition(p) {\n        if (!this.queued) {\n            this._player.setPosition(p);\n        }\n    }\n    getPosition() {\n        return this.queued ? 0 : this._player.getPosition();\n    }\n    /** @internal */\n    triggerCallback(phaseName) {\n        const p = this._player;\n        if (p.triggerCallback) {\n            p.triggerCallback(phaseName);\n        }\n    }\n}\nfunction deleteOrUnsetInMap(map, key, value) {\n    let currentValues = map.get(key);\n    if (currentValues) {\n        if (currentValues.length) {\n            const index = currentValues.indexOf(value);\n            currentValues.splice(index, 1);\n        }\n        if (currentValues.length == 0) {\n            map.delete(key);\n        }\n    }\n    return currentValues;\n}\nfunction normalizeTriggerValue(value) {\n    // we use `!= null` here because it's the most simple\n    // way to test against a \"falsy\" value without mixing\n    // in empty strings or a zero value. DO NOT OPTIMIZE.\n    return value != null ? value : null;\n}\nfunction isElementNode(node) {\n    return node && node['nodeType'] === 1;\n}\nfunction isTriggerEventValid(eventName) {\n    return eventName == 'start' || eventName == 'done';\n}\nfunction cloakElement(element, value) {\n    const oldValue = element.style.display;\n    element.style.display = value != null ? value : 'none';\n    return oldValue;\n}\nfunction cloakAndComputeStyles(valuesMap, driver, elements, elementPropsMap, defaultStyle) {\n    const cloakVals = [];\n    elements.forEach(element => cloakVals.push(cloakElement(element)));\n    const failedElements = [];\n    elementPropsMap.forEach((props, element) => {\n        const styles = new Map();\n        props.forEach(prop => {\n            const value = driver.computeStyle(element, prop, defaultStyle);\n            styles.set(prop, value);\n            // there is no easy way to detect this because a sub element could be removed\n            // by a parent animation element being detached.\n            if (!value || value.length == 0) {\n                element[REMOVAL_FLAG] = NULL_REMOVED_QUERIED_STATE;\n                failedElements.push(element);\n            }\n        });\n        valuesMap.set(element, styles);\n    });\n    // we use a index variable here since Set.forEach(a, i) does not return\n    // an index value for the closure (but instead just the value)\n    let i = 0;\n    elements.forEach(element => cloakElement(element, cloakVals[i++]));\n    return failedElements;\n}\n/*\nSince the Angular renderer code will return a collection of inserted\nnodes in all areas of a DOM tree, it's up to this algorithm to figure\nout which nodes are roots for each animation @trigger.\n\nBy placing each inserted node into a Set and traversing upwards, it\nis possible to find the @trigger elements and well any direct *star\ninsertion nodes, if a @trigger root is found then the enter element\nis placed into the Map[@trigger] spot.\n */\nfunction buildRootMap(roots, nodes) {\n    const rootMap = new Map();\n    roots.forEach(root => rootMap.set(root, []));\n    if (nodes.length == 0)\n        return rootMap;\n    const NULL_NODE = 1;\n    const nodeSet = new Set(nodes);\n    const localRootMap = new Map();\n    function getRoot(node) {\n        if (!node)\n            return NULL_NODE;\n        let root = localRootMap.get(node);\n        if (root)\n            return root;\n        const parent = node.parentNode;\n        if (rootMap.has(parent)) { // ngIf inside @trigger\n            root = parent;\n        }\n        else if (nodeSet.has(parent)) { // ngIf inside ngIf\n            root = NULL_NODE;\n        }\n        else { // recurse upwards\n            root = getRoot(parent);\n        }\n        localRootMap.set(node, root);\n        return root;\n    }\n    nodes.forEach(node => {\n        const root = getRoot(node);\n        if (root !== NULL_NODE) {\n            rootMap.get(root).push(node);\n        }\n    });\n    return rootMap;\n}\nfunction addClass(element, className) {\n    element.classList?.add(className);\n}\nfunction removeClass(element, className) {\n    element.classList?.remove(className);\n}\nfunction removeNodesAfterAnimationDone(engine, element, players) {\n    optimizeGroupPlayer(players).onDone(() => engine.processLeaveNode(element));\n}\nfunction flattenGroupPlayers(players) {\n    const finalPlayers = [];\n    _flattenGroupPlayersRecur(players, finalPlayers);\n    return finalPlayers;\n}\nfunction _flattenGroupPlayersRecur(players, finalPlayers) {\n    for (let i = 0; i < players.length; i++) {\n        const player = players[i];\n        if (player instanceof ɵAnimationGroupPlayer) {\n            _flattenGroupPlayersRecur(player.players, finalPlayers);\n        }\n        else {\n            finalPlayers.push(player);\n        }\n    }\n}\nfunction objEquals(a, b) {\n    const k1 = Object.keys(a);\n    const k2 = Object.keys(b);\n    if (k1.length != k2.length)\n        return false;\n    for (let i = 0; i < k1.length; i++) {\n        const prop = k1[i];\n        if (!b.hasOwnProperty(prop) || a[prop] !== b[prop])\n            return false;\n    }\n    return true;\n}\nfunction replacePostStylesAsPre(element, allPreStyleElements, allPostStyleElements) {\n    const postEntry = allPostStyleElements.get(element);\n    if (!postEntry)\n        return false;\n    let preEntry = allPreStyleElements.get(element);\n    if (preEntry) {\n        postEntry.forEach(data => preEntry.add(data));\n    }\n    else {\n        allPreStyleElements.set(element, postEntry);\n    }\n    allPostStyleElements.delete(element);\n    return true;\n}\n\nclass AnimationEngine {\n    constructor(bodyNode, _driver, _normalizer) {\n        this.bodyNode = bodyNode;\n        this._driver = _driver;\n        this._normalizer = _normalizer;\n        this._triggerCache = {};\n        // this method is designed to be overridden by the code that uses this engine\n        this.onRemovalComplete = (element, context) => { };\n        this._transitionEngine = new TransitionAnimationEngine(bodyNode, _driver, _normalizer);\n        this._timelineEngine = new TimelineAnimationEngine(bodyNode, _driver, _normalizer);\n        this._transitionEngine.onRemovalComplete = (element, context) => this.onRemovalComplete(element, context);\n    }\n    registerTrigger(componentId, namespaceId, hostElement, name, metadata) {\n        const cacheKey = componentId + '-' + name;\n        let trigger = this._triggerCache[cacheKey];\n        if (!trigger) {\n            const errors = [];\n            const warnings = [];\n            const ast = buildAnimationAst(this._driver, metadata, errors, warnings);\n            if (errors.length) {\n                throw triggerBuildFailed(name, errors);\n            }\n            if (warnings.length) {\n                warnTriggerBuild(name, warnings);\n            }\n            trigger = buildTrigger(name, ast, this._normalizer);\n            this._triggerCache[cacheKey] = trigger;\n        }\n        this._transitionEngine.registerTrigger(namespaceId, name, trigger);\n    }\n    register(namespaceId, hostElement) {\n        this._transitionEngine.register(namespaceId, hostElement);\n    }\n    destroy(namespaceId, context) {\n        this._transitionEngine.destroy(namespaceId, context);\n    }\n    onInsert(namespaceId, element, parent, insertBefore) {\n        this._transitionEngine.insertNode(namespaceId, element, parent, insertBefore);\n    }\n    onRemove(namespaceId, element, context, isHostElement) {\n        this._transitionEngine.removeNode(namespaceId, element, isHostElement || false, context);\n    }\n    disableAnimations(element, disable) {\n        this._transitionEngine.markElementAsDisabled(element, disable);\n    }\n    process(namespaceId, element, property, value) {\n        if (property.charAt(0) == '@') {\n            const [id, action] = parseTimelineCommand(property);\n            const args = value;\n            this._timelineEngine.command(id, element, action, args);\n        }\n        else {\n            this._transitionEngine.trigger(namespaceId, element, property, value);\n        }\n    }\n    listen(namespaceId, element, eventName, eventPhase, callback) {\n        // @@listen\n        if (eventName.charAt(0) == '@') {\n            const [id, action] = parseTimelineCommand(eventName);\n            return this._timelineEngine.listen(id, element, action, callback);\n        }\n        return this._transitionEngine.listen(namespaceId, element, eventName, eventPhase, callback);\n    }\n    flush(microtaskId = -1) {\n        this._transitionEngine.flush(microtaskId);\n    }\n    get players() {\n        return this._transitionEngine.players\n            .concat(this._timelineEngine.players);\n    }\n    whenRenderingDone() {\n        return this._transitionEngine.whenRenderingDone();\n    }\n}\n\n/**\n * Returns an instance of `SpecialCasedStyles` if and when any special (non animateable) styles are\n * detected.\n *\n * In CSS there exist properties that cannot be animated within a keyframe animation\n * (whether it be via CSS keyframes or web-animations) and the animation implementation\n * will ignore them. This function is designed to detect those special cased styles and\n * return a container that will be executed at the start and end of the animation.\n *\n * @returns an instance of `SpecialCasedStyles` if any special styles are detected otherwise `null`\n */\nfunction packageNonAnimatableStyles(element, styles) {\n    let startStyles = null;\n    let endStyles = null;\n    if (Array.isArray(styles) && styles.length) {\n        startStyles = filterNonAnimatableStyles(styles[0]);\n        if (styles.length > 1) {\n            endStyles = filterNonAnimatableStyles(styles[styles.length - 1]);\n        }\n    }\n    else if (styles instanceof Map) {\n        startStyles = filterNonAnimatableStyles(styles);\n    }\n    return (startStyles || endStyles) ? new SpecialCasedStyles(element, startStyles, endStyles) :\n        null;\n}\n/**\n * Designed to be executed during a keyframe-based animation to apply any special-cased styles.\n *\n * When started (when the `start()` method is run) then the provided `startStyles`\n * will be applied. When finished (when the `finish()` method is called) the\n * `endStyles` will be applied as well any any starting styles. Finally when\n * `destroy()` is called then all styles will be removed.\n */\nclass SpecialCasedStyles {\n    constructor(_element, _startStyles, _endStyles) {\n        this._element = _element;\n        this._startStyles = _startStyles;\n        this._endStyles = _endStyles;\n        this._state = 0 /* SpecialCasedStylesState.Pending */;\n        let initialStyles = SpecialCasedStyles.initialStylesByElement.get(_element);\n        if (!initialStyles) {\n            SpecialCasedStyles.initialStylesByElement.set(_element, initialStyles = new Map());\n        }\n        this._initialStyles = initialStyles;\n    }\n    start() {\n        if (this._state < 1 /* SpecialCasedStylesState.Started */) {\n            if (this._startStyles) {\n                setStyles(this._element, this._startStyles, this._initialStyles);\n            }\n            this._state = 1 /* SpecialCasedStylesState.Started */;\n        }\n    }\n    finish() {\n        this.start();\n        if (this._state < 2 /* SpecialCasedStylesState.Finished */) {\n            setStyles(this._element, this._initialStyles);\n            if (this._endStyles) {\n                setStyles(this._element, this._endStyles);\n                this._endStyles = null;\n            }\n            this._state = 1 /* SpecialCasedStylesState.Started */;\n        }\n    }\n    destroy() {\n        this.finish();\n        if (this._state < 3 /* SpecialCasedStylesState.Destroyed */) {\n            SpecialCasedStyles.initialStylesByElement.delete(this._element);\n            if (this._startStyles) {\n                eraseStyles(this._element, this._startStyles);\n                this._endStyles = null;\n            }\n            if (this._endStyles) {\n                eraseStyles(this._element, this._endStyles);\n                this._endStyles = null;\n            }\n            setStyles(this._element, this._initialStyles);\n            this._state = 3 /* SpecialCasedStylesState.Destroyed */;\n        }\n    }\n}\nSpecialCasedStyles.initialStylesByElement = ( /* @__PURE__ */new WeakMap());\nfunction filterNonAnimatableStyles(styles) {\n    let result = null;\n    styles.forEach((val, prop) => {\n        if (isNonAnimatableStyle(prop)) {\n            result = result || new Map();\n            result.set(prop, val);\n        }\n    });\n    return result;\n}\nfunction isNonAnimatableStyle(prop) {\n    return prop === 'display' || prop === 'position';\n}\n\nclass WebAnimationsPlayer {\n    constructor(element, keyframes, options, _specialStyles) {\n        this.element = element;\n        this.keyframes = keyframes;\n        this.options = options;\n        this._specialStyles = _specialStyles;\n        this._onDoneFns = [];\n        this._onStartFns = [];\n        this._onDestroyFns = [];\n        this._initialized = false;\n        this._finished = false;\n        this._started = false;\n        this._destroyed = false;\n        // the following original fns are persistent copies of the _onStartFns and _onDoneFns\n        // and are used to reset the fns to their original values upon reset()\n        // (since the _onStartFns and _onDoneFns get deleted after they are called)\n        this._originalOnDoneFns = [];\n        this._originalOnStartFns = [];\n        this.time = 0;\n        this.parentPlayer = null;\n        this.currentSnapshot = new Map();\n        this._duration = options['duration'];\n        this._delay = options['delay'] || 0;\n        this.time = this._duration + this._delay;\n    }\n    _onFinish() {\n        if (!this._finished) {\n            this._finished = true;\n            this._onDoneFns.forEach(fn => fn());\n            this._onDoneFns = [];\n        }\n    }\n    init() {\n        this._buildPlayer();\n        this._preparePlayerBeforeStart();\n    }\n    _buildPlayer() {\n        if (this._initialized)\n            return;\n        this._initialized = true;\n        const keyframes = this.keyframes;\n        // @ts-expect-error overwriting a readonly property\n        this.domPlayer = this._triggerWebAnimation(this.element, keyframes, this.options);\n        this._finalKeyframe = keyframes.length ? keyframes[keyframes.length - 1] : new Map();\n        this.domPlayer.addEventListener('finish', () => this._onFinish());\n    }\n    _preparePlayerBeforeStart() {\n        // this is required so that the player doesn't start to animate right away\n        if (this._delay) {\n            this._resetDomPlayerState();\n        }\n        else {\n            this.domPlayer.pause();\n        }\n    }\n    _convertKeyframesToObject(keyframes) {\n        const kfs = [];\n        keyframes.forEach(frame => {\n            kfs.push(Object.fromEntries(frame));\n        });\n        return kfs;\n    }\n    /** @internal */\n    _triggerWebAnimation(element, keyframes, options) {\n        // jscompiler doesn't seem to know animate is a native property because it's not fully\n        // supported yet across common browsers (we polyfill it for Edge/Safari) [CL #143630929]\n        return element['animate'](this._convertKeyframesToObject(keyframes), options);\n    }\n    onStart(fn) {\n        this._originalOnStartFns.push(fn);\n        this._onStartFns.push(fn);\n    }\n    onDone(fn) {\n        this._originalOnDoneFns.push(fn);\n        this._onDoneFns.push(fn);\n    }\n    onDestroy(fn) {\n        this._onDestroyFns.push(fn);\n    }\n    play() {\n        this._buildPlayer();\n        if (!this.hasStarted()) {\n            this._onStartFns.forEach(fn => fn());\n            this._onStartFns = [];\n            this._started = true;\n            if (this._specialStyles) {\n                this._specialStyles.start();\n            }\n        }\n        this.domPlayer.play();\n    }\n    pause() {\n        this.init();\n        this.domPlayer.pause();\n    }\n    finish() {\n        this.init();\n        if (this._specialStyles) {\n            this._specialStyles.finish();\n        }\n        this._onFinish();\n        this.domPlayer.finish();\n    }\n    reset() {\n        this._resetDomPlayerState();\n        this._destroyed = false;\n        this._finished = false;\n        this._started = false;\n        this._onStartFns = this._originalOnStartFns;\n        this._onDoneFns = this._originalOnDoneFns;\n    }\n    _resetDomPlayerState() {\n        if (this.domPlayer) {\n            this.domPlayer.cancel();\n        }\n    }\n    restart() {\n        this.reset();\n        this.play();\n    }\n    hasStarted() {\n        return this._started;\n    }\n    destroy() {\n        if (!this._destroyed) {\n            this._destroyed = true;\n            this._resetDomPlayerState();\n            this._onFinish();\n            if (this._specialStyles) {\n                this._specialStyles.destroy();\n            }\n            this._onDestroyFns.forEach(fn => fn());\n            this._onDestroyFns = [];\n        }\n    }\n    setPosition(p) {\n        if (this.domPlayer === undefined) {\n            this.init();\n        }\n        this.domPlayer.currentTime = p * this.time;\n    }\n    getPosition() {\n        return this.domPlayer.currentTime / this.time;\n    }\n    get totalTime() {\n        return this._delay + this._duration;\n    }\n    beforeDestroy() {\n        const styles = new Map();\n        if (this.hasStarted()) {\n            // note: this code is invoked only when the `play` function was called prior to this\n            // (thus `hasStarted` returns true), this implies that the code that initializes\n            // `_finalKeyframe` has also been executed and the non-null assertion can be safely used here\n            const finalKeyframe = this._finalKeyframe;\n            finalKeyframe.forEach((val, prop) => {\n                if (prop !== 'offset') {\n                    styles.set(prop, this._finished ? val : computeStyle(this.element, prop));\n                }\n            });\n        }\n        this.currentSnapshot = styles;\n    }\n    /** @internal */\n    triggerCallback(phaseName) {\n        const methods = phaseName === 'start' ? this._onStartFns : this._onDoneFns;\n        methods.forEach(fn => fn());\n        methods.length = 0;\n    }\n}\n\nclass WebAnimationsDriver {\n    validateStyleProperty(prop) {\n        // Perform actual validation in dev mode only, in prod mode this check is a noop.\n        if (typeof ngDevMode === 'undefined' || ngDevMode) {\n            return validateStyleProperty(prop);\n        }\n        return true;\n    }\n    validateAnimatableStyleProperty(prop) {\n        // Perform actual validation in dev mode only, in prod mode this check is a noop.\n        if (typeof ngDevMode === 'undefined' || ngDevMode) {\n            const cssProp = camelCaseToDashCase(prop);\n            return validateWebAnimatableStyleProperty(cssProp);\n        }\n        return true;\n    }\n    matchesElement(_element, _selector) {\n        // This method is deprecated and no longer in use so we return false.\n        return false;\n    }\n    containsElement(elm1, elm2) {\n        return containsElement(elm1, elm2);\n    }\n    getParentElement(element) {\n        return getParentElement(element);\n    }\n    query(element, selector, multi) {\n        return invokeQuery(element, selector, multi);\n    }\n    computeStyle(element, prop, defaultValue) {\n        return window.getComputedStyle(element)[prop];\n    }\n    animate(element, keyframes, duration, delay, easing, previousPlayers = []) {\n        const fill = delay == 0 ? 'both' : 'forwards';\n        const playerOptions = { duration, delay, fill };\n        // we check for this to avoid having a null|undefined value be present\n        // for the easing (which results in an error for certain browsers #9752)\n        if (easing) {\n            playerOptions['easing'] = easing;\n        }\n        const previousStyles = new Map();\n        const previousWebAnimationPlayers = previousPlayers.filter(player => player instanceof WebAnimationsPlayer);\n        if (allowPreviousPlayerStylesMerge(duration, delay)) {\n            previousWebAnimationPlayers.forEach(player => {\n                player.currentSnapshot.forEach((val, prop) => previousStyles.set(prop, val));\n            });\n        }\n        let _keyframes = normalizeKeyframes(keyframes).map(styles => copyStyles(styles));\n        _keyframes = balancePreviousStylesIntoKeyframes(element, _keyframes, previousStyles);\n        const specialStyles = packageNonAnimatableStyles(element, _keyframes);\n        return new WebAnimationsPlayer(element, _keyframes, playerOptions, specialStyles);\n    }\n}\n\n/**\n * @module\n * @description\n * Entry point for all animation APIs of the animation browser package.\n */\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of this package.\n */\n\n// This file is not used to build this module. It is only used during editing\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { AnimationDriver, Animation as ɵAnimation, AnimationEngine as ɵAnimationEngine, AnimationStyleNormalizer as ɵAnimationStyleNormalizer, NoopAnimationDriver as ɵNoopAnimationDriver, NoopAnimationStyleNormalizer as ɵNoopAnimationStyleNormalizer, WebAnimationsDriver as ɵWebAnimationsDriver, WebAnimationsPlayer as ɵWebAnimationsPlayer, WebAnimationsStyleNormalizer as ɵWebAnimationsStyleNormalizer, allowPreviousPlayerStylesMerge as ɵallowPreviousPlayerStylesMerge, containsElement as ɵcontainsElement, getParentElement as ɵgetParentElement, invokeQuery as ɵinvokeQuery, normalizeKeyframes as ɵnormalizeKeyframes, validateStyleProperty as ɵvalidateStyleProperty };\n","/**\n * @license Angular v15.2.9\n * (c) 2010-2022 Google LLC. https://angular.io/\n * License: MIT\n */\n\nimport * as i0 from '@angular/core';\nimport { ViewEncapsulation, Injectable, Inject, RendererFactory2, NgZone, ANIMATION_MODULE_TYPE, NgModule } from '@angular/core';\nexport { ANIMATION_MODULE_TYPE } from '@angular/core';\nimport { ɵDomRendererFactory2, BrowserModule } from '@angular/platform-browser';\nimport { AnimationBuilder, sequence, AnimationFactory } from '@angular/animations';\nimport * as i1 from '@angular/animations/browser';\nimport { ɵAnimationEngine, ɵWebAnimationsStyleNormalizer, ɵAnimationStyleNormalizer, AnimationDriver, ɵWebAnimationsDriver, ɵNoopAnimationDriver } from '@angular/animations/browser';\nimport { DOCUMENT } from '@angular/common';\n\nclass BrowserAnimationBuilder extends AnimationBuilder {\n    constructor(rootRenderer, doc) {\n        super();\n        this._nextAnimationId = 0;\n        const typeData = { id: '0', encapsulation: ViewEncapsulation.None, styles: [], data: { animation: [] } };\n        this._renderer = rootRenderer.createRenderer(doc.body, typeData);\n    }\n    build(animation) {\n        const id = this._nextAnimationId.toString();\n        this._nextAnimationId++;\n        const entry = Array.isArray(animation) ? sequence(animation) : animation;\n        issueAnimationCommand(this._renderer, null, id, 'register', [entry]);\n        return new BrowserAnimationFactory(id, this._renderer);\n    }\n}\nBrowserAnimationBuilder.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserAnimationBuilder, deps: [{ token: i0.RendererFactory2 }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable });\nBrowserAnimationBuilder.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserAnimationBuilder });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserAnimationBuilder, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: i0.RendererFactory2 }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }]; } });\nclass BrowserAnimationFactory extends AnimationFactory {\n    constructor(_id, _renderer) {\n        super();\n        this._id = _id;\n        this._renderer = _renderer;\n    }\n    create(element, options) {\n        return new RendererAnimationPlayer(this._id, element, options || {}, this._renderer);\n    }\n}\nclass RendererAnimationPlayer {\n    constructor(id, element, options, _renderer) {\n        this.id = id;\n        this.element = element;\n        this._renderer = _renderer;\n        this.parentPlayer = null;\n        this._started = false;\n        this.totalTime = 0;\n        this._command('create', options);\n    }\n    _listen(eventName, callback) {\n        return this._renderer.listen(this.element, `@@${this.id}:${eventName}`, callback);\n    }\n    _command(command, ...args) {\n        return issueAnimationCommand(this._renderer, this.element, this.id, command, args);\n    }\n    onDone(fn) {\n        this._listen('done', fn);\n    }\n    onStart(fn) {\n        this._listen('start', fn);\n    }\n    onDestroy(fn) {\n        this._listen('destroy', fn);\n    }\n    init() {\n        this._command('init');\n    }\n    hasStarted() {\n        return this._started;\n    }\n    play() {\n        this._command('play');\n        this._started = true;\n    }\n    pause() {\n        this._command('pause');\n    }\n    restart() {\n        this._command('restart');\n    }\n    finish() {\n        this._command('finish');\n    }\n    destroy() {\n        this._command('destroy');\n    }\n    reset() {\n        this._command('reset');\n        this._started = false;\n    }\n    setPosition(p) {\n        this._command('setPosition', p);\n    }\n    getPosition() {\n        return this._renderer.engine.players[+this.id]?.getPosition() ?? 0;\n    }\n}\nfunction issueAnimationCommand(renderer, element, id, command, args) {\n    return renderer.setProperty(element, `@@${id}:${command}`, args);\n}\n\nconst ANIMATION_PREFIX = '@';\nconst DISABLE_ANIMATIONS_FLAG = '@.disabled';\nclass AnimationRendererFactory {\n    constructor(delegate, engine, _zone) {\n        this.delegate = delegate;\n        this.engine = engine;\n        this._zone = _zone;\n        this._currentId = 0;\n        this._microtaskId = 1;\n        this._animationCallbacksBuffer = [];\n        this._rendererCache = new Map();\n        this._cdRecurDepth = 0;\n        this.promise = Promise.resolve(0);\n        engine.onRemovalComplete = (element, delegate) => {\n            // Note: if a component element has a leave animation, and a host leave animation,\n            // the view engine will call `removeChild` for the parent\n            // component renderer as well as for the child component renderer.\n            // Therefore, we need to check if we already removed the element.\n            const parentNode = delegate?.parentNode(element);\n            if (parentNode) {\n                delegate.removeChild(parentNode, element);\n            }\n        };\n    }\n    createRenderer(hostElement, type) {\n        const EMPTY_NAMESPACE_ID = '';\n        // cache the delegates to find out which cached delegate can\n        // be used by which cached renderer\n        const delegate = this.delegate.createRenderer(hostElement, type);\n        if (!hostElement || !type || !type.data || !type.data['animation']) {\n            let renderer = this._rendererCache.get(delegate);\n            if (!renderer) {\n                // Ensure that the renderer is removed from the cache on destroy\n                // since it may contain references to detached DOM nodes.\n                const onRendererDestroy = () => this._rendererCache.delete(delegate);\n                renderer =\n                    new BaseAnimationRenderer(EMPTY_NAMESPACE_ID, delegate, this.engine, onRendererDestroy);\n                // only cache this result when the base renderer is used\n                this._rendererCache.set(delegate, renderer);\n            }\n            return renderer;\n        }\n        const componentId = type.id;\n        const namespaceId = type.id + '-' + this._currentId;\n        this._currentId++;\n        this.engine.register(namespaceId, hostElement);\n        const registerTrigger = (trigger) => {\n            if (Array.isArray(trigger)) {\n                trigger.forEach(registerTrigger);\n            }\n            else {\n                this.engine.registerTrigger(componentId, namespaceId, hostElement, trigger.name, trigger);\n            }\n        };\n        const animationTriggers = type.data['animation'];\n        animationTriggers.forEach(registerTrigger);\n        return new AnimationRenderer(this, namespaceId, delegate, this.engine);\n    }\n    begin() {\n        this._cdRecurDepth++;\n        if (this.delegate.begin) {\n            this.delegate.begin();\n        }\n    }\n    _scheduleCountTask() {\n        // always use promise to schedule microtask instead of use Zone\n        this.promise.then(() => {\n            this._microtaskId++;\n        });\n    }\n    /** @internal */\n    scheduleListenerCallback(count, fn, data) {\n        if (count >= 0 && count < this._microtaskId) {\n            this._zone.run(() => fn(data));\n            return;\n        }\n        if (this._animationCallbacksBuffer.length == 0) {\n            Promise.resolve(null).then(() => {\n                this._zone.run(() => {\n                    this._animationCallbacksBuffer.forEach(tuple => {\n                        const [fn, data] = tuple;\n                        fn(data);\n                    });\n                    this._animationCallbacksBuffer = [];\n                });\n            });\n        }\n        this._animationCallbacksBuffer.push([fn, data]);\n    }\n    end() {\n        this._cdRecurDepth--;\n        // this is to prevent animations from running twice when an inner\n        // component does CD when a parent component instead has inserted it\n        if (this._cdRecurDepth == 0) {\n            this._zone.runOutsideAngular(() => {\n                this._scheduleCountTask();\n                this.engine.flush(this._microtaskId);\n            });\n        }\n        if (this.delegate.end) {\n            this.delegate.end();\n        }\n    }\n    whenRenderingDone() {\n        return this.engine.whenRenderingDone();\n    }\n}\nAnimationRendererFactory.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: AnimationRendererFactory, deps: [{ token: i0.RendererFactory2 }, { token: i1.ɵAnimationEngine }, { token: i0.NgZone }], target: i0.ɵɵFactoryTarget.Injectable });\nAnimationRendererFactory.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: AnimationRendererFactory });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: AnimationRendererFactory, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: i0.RendererFactory2 }, { type: i1.ɵAnimationEngine }, { type: i0.NgZone }]; } });\nclass BaseAnimationRenderer {\n    constructor(namespaceId, delegate, engine, _onDestroy) {\n        this.namespaceId = namespaceId;\n        this.delegate = delegate;\n        this.engine = engine;\n        this._onDestroy = _onDestroy;\n        this.destroyNode = this.delegate.destroyNode ? (n) => delegate.destroyNode(n) : null;\n    }\n    get data() {\n        return this.delegate.data;\n    }\n    destroy() {\n        this.engine.destroy(this.namespaceId, this.delegate);\n        this.delegate.destroy();\n        this._onDestroy?.();\n    }\n    createElement(name, namespace) {\n        return this.delegate.createElement(name, namespace);\n    }\n    createComment(value) {\n        return this.delegate.createComment(value);\n    }\n    createText(value) {\n        return this.delegate.createText(value);\n    }\n    appendChild(parent, newChild) {\n        this.delegate.appendChild(parent, newChild);\n        this.engine.onInsert(this.namespaceId, newChild, parent, false);\n    }\n    insertBefore(parent, newChild, refChild, isMove = true) {\n        this.delegate.insertBefore(parent, newChild, refChild);\n        // If `isMove` true than we should animate this insert.\n        this.engine.onInsert(this.namespaceId, newChild, parent, isMove);\n    }\n    removeChild(parent, oldChild, isHostElement) {\n        this.engine.onRemove(this.namespaceId, oldChild, this.delegate, isHostElement);\n    }\n    selectRootElement(selectorOrNode, preserveContent) {\n        return this.delegate.selectRootElement(selectorOrNode, preserveContent);\n    }\n    parentNode(node) {\n        return this.delegate.parentNode(node);\n    }\n    nextSibling(node) {\n        return this.delegate.nextSibling(node);\n    }\n    setAttribute(el, name, value, namespace) {\n        this.delegate.setAttribute(el, name, value, namespace);\n    }\n    removeAttribute(el, name, namespace) {\n        this.delegate.removeAttribute(el, name, namespace);\n    }\n    addClass(el, name) {\n        this.delegate.addClass(el, name);\n    }\n    removeClass(el, name) {\n        this.delegate.removeClass(el, name);\n    }\n    setStyle(el, style, value, flags) {\n        this.delegate.setStyle(el, style, value, flags);\n    }\n    removeStyle(el, style, flags) {\n        this.delegate.removeStyle(el, style, flags);\n    }\n    setProperty(el, name, value) {\n        if (name.charAt(0) == ANIMATION_PREFIX && name == DISABLE_ANIMATIONS_FLAG) {\n            this.disableAnimations(el, !!value);\n        }\n        else {\n            this.delegate.setProperty(el, name, value);\n        }\n    }\n    setValue(node, value) {\n        this.delegate.setValue(node, value);\n    }\n    listen(target, eventName, callback) {\n        return this.delegate.listen(target, eventName, callback);\n    }\n    disableAnimations(element, value) {\n        this.engine.disableAnimations(element, value);\n    }\n}\nclass AnimationRenderer extends BaseAnimationRenderer {\n    constructor(factory, namespaceId, delegate, engine, onDestroy) {\n        super(namespaceId, delegate, engine, onDestroy);\n        this.factory = factory;\n        this.namespaceId = namespaceId;\n    }\n    setProperty(el, name, value) {\n        if (name.charAt(0) == ANIMATION_PREFIX) {\n            if (name.charAt(1) == '.' && name == DISABLE_ANIMATIONS_FLAG) {\n                value = value === undefined ? true : !!value;\n                this.disableAnimations(el, value);\n            }\n            else {\n                this.engine.process(this.namespaceId, el, name.slice(1), value);\n            }\n        }\n        else {\n            this.delegate.setProperty(el, name, value);\n        }\n    }\n    listen(target, eventName, callback) {\n        if (eventName.charAt(0) == ANIMATION_PREFIX) {\n            const element = resolveElementFromTarget(target);\n            let name = eventName.slice(1);\n            let phase = '';\n            // @listener.phase is for trigger animation callbacks\n            // @@listener is for animation builder callbacks\n            if (name.charAt(0) != ANIMATION_PREFIX) {\n                [name, phase] = parseTriggerCallbackName(name);\n            }\n            return this.engine.listen(this.namespaceId, element, name, phase, event => {\n                const countId = event['_data'] || -1;\n                this.factory.scheduleListenerCallback(countId, callback, event);\n            });\n        }\n        return this.delegate.listen(target, eventName, callback);\n    }\n}\nfunction resolveElementFromTarget(target) {\n    switch (target) {\n        case 'body':\n            return document.body;\n        case 'document':\n            return document;\n        case 'window':\n            return window;\n        default:\n            return target;\n    }\n}\nfunction parseTriggerCallbackName(triggerName) {\n    const dotIndex = triggerName.indexOf('.');\n    const trigger = triggerName.substring(0, dotIndex);\n    const phase = triggerName.slice(dotIndex + 1);\n    return [trigger, phase];\n}\n\nclass InjectableAnimationEngine extends ɵAnimationEngine {\n    // The `ApplicationRef` is injected here explicitly to force the dependency ordering.\n    // Since the `ApplicationRef` should be created earlier before the `AnimationEngine`, they\n    // both have `ngOnDestroy` hooks and `flush()` must be called after all views are destroyed.\n    constructor(doc, driver, normalizer, appRef) {\n        super(doc.body, driver, normalizer);\n    }\n    ngOnDestroy() {\n        this.flush();\n    }\n}\nInjectableAnimationEngine.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: InjectableAnimationEngine, deps: [{ token: DOCUMENT }, { token: i1.AnimationDriver }, { token: i1.ɵAnimationStyleNormalizer }, { token: i0.ApplicationRef }], target: i0.ɵɵFactoryTarget.Injectable });\nInjectableAnimationEngine.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: InjectableAnimationEngine });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: InjectableAnimationEngine, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }, { type: i1.AnimationDriver }, { type: i1.ɵAnimationStyleNormalizer }, { type: i0.ApplicationRef }]; } });\nfunction instantiateDefaultStyleNormalizer() {\n    return new ɵWebAnimationsStyleNormalizer();\n}\nfunction instantiateRendererFactory(renderer, engine, zone) {\n    return new AnimationRendererFactory(renderer, engine, zone);\n}\nconst SHARED_ANIMATION_PROVIDERS = [\n    { provide: AnimationBuilder, useClass: BrowserAnimationBuilder },\n    { provide: ɵAnimationStyleNormalizer, useFactory: instantiateDefaultStyleNormalizer },\n    { provide: ɵAnimationEngine, useClass: InjectableAnimationEngine }, {\n        provide: RendererFactory2,\n        useFactory: instantiateRendererFactory,\n        deps: [ɵDomRendererFactory2, ɵAnimationEngine, NgZone]\n    }\n];\n/**\n * Separate providers from the actual module so that we can do a local modification in Google3 to\n * include them in the BrowserModule.\n */\nconst BROWSER_ANIMATIONS_PROVIDERS = [\n    { provide: AnimationDriver, useFactory: () => new ɵWebAnimationsDriver() },\n    { provide: ANIMATION_MODULE_TYPE, useValue: 'BrowserAnimations' }, ...SHARED_ANIMATION_PROVIDERS\n];\n/**\n * Separate providers from the actual module so that we can do a local modification in Google3 to\n * include them in the BrowserTestingModule.\n */\nconst BROWSER_NOOP_ANIMATIONS_PROVIDERS = [\n    { provide: AnimationDriver, useClass: ɵNoopAnimationDriver },\n    { provide: ANIMATION_MODULE_TYPE, useValue: 'NoopAnimations' }, ...SHARED_ANIMATION_PROVIDERS\n];\n\n/**\n * Exports `BrowserModule` with additional [dependency-injection providers](guide/glossary#provider)\n * for use with animations. See [Animations](guide/animations).\n * @publicApi\n */\nclass BrowserAnimationsModule {\n    /**\n     * Configures the module based on the specified object.\n     *\n     * @param config Object used to configure the behavior of the `BrowserAnimationsModule`.\n     * @see `BrowserAnimationsModuleConfig`\n     *\n     * @usageNotes\n     * When registering the `BrowserAnimationsModule`, you can use the `withConfig`\n     * function as follows:\n     * ```\n     * @NgModule({\n     *   imports: [BrowserAnimationsModule.withConfig(config)]\n     * })\n     * class MyNgModule {}\n     * ```\n     */\n    static withConfig(config) {\n        return {\n            ngModule: BrowserAnimationsModule,\n            providers: config.disableAnimations ? BROWSER_NOOP_ANIMATIONS_PROVIDERS :\n                BROWSER_ANIMATIONS_PROVIDERS\n        };\n    }\n}\nBrowserAnimationsModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserAnimationsModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nBrowserAnimationsModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserAnimationsModule, exports: [BrowserModule] });\nBrowserAnimationsModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserAnimationsModule, providers: BROWSER_ANIMATIONS_PROVIDERS, imports: [BrowserModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserAnimationsModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    exports: [BrowserModule],\n                    providers: BROWSER_ANIMATIONS_PROVIDERS,\n                }]\n        }] });\n/**\n * Returns the set of [dependency-injection providers](guide/glossary#provider)\n * to enable animations in an application. See [animations guide](guide/animations)\n * to learn more about animations in Angular.\n *\n * @usageNotes\n *\n * The function is useful when you want to enable animations in an application\n * bootstrapped using the `bootstrapApplication` function. In this scenario there\n * is no need to import the `BrowserAnimationsModule` NgModule at all, just add\n * providers returned by this function to the `providers` list as show below.\n *\n * ```typescript\n * bootstrapApplication(RootComponent, {\n *   providers: [\n *     provideAnimations()\n *   ]\n * });\n * ```\n *\n * @publicApi\n */\nfunction provideAnimations() {\n    // Return a copy to prevent changes to the original array in case any in-place\n    // alterations are performed to the `provideAnimations` call results in app code.\n    return [...BROWSER_ANIMATIONS_PROVIDERS];\n}\n/**\n * A null player that must be imported to allow disabling of animations.\n * @publicApi\n */\nclass NoopAnimationsModule {\n}\nNoopAnimationsModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: NoopAnimationsModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nNoopAnimationsModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.9\", ngImport: i0, type: NoopAnimationsModule, exports: [BrowserModule] });\nNoopAnimationsModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: NoopAnimationsModule, providers: BROWSER_NOOP_ANIMATIONS_PROVIDERS, imports: [BrowserModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: NoopAnimationsModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    exports: [BrowserModule],\n                    providers: BROWSER_NOOP_ANIMATIONS_PROVIDERS,\n                }]\n        }] });\n/**\n * Returns the set of [dependency-injection providers](guide/glossary#provider)\n * to disable animations in an application. See [animations guide](guide/animations)\n * to learn more about animations in Angular.\n *\n * @usageNotes\n *\n * The function is useful when you want to bootstrap an application using\n * the `bootstrapApplication` function, but you need to disable animations\n * (for example, when running tests).\n *\n * ```typescript\n * bootstrapApplication(RootComponent, {\n *   providers: [\n *     provideNoopAnimations()\n *   ]\n * });\n * ```\n *\n * @publicApi\n */\nfunction provideNoopAnimations() {\n    // Return a copy to prevent changes to the original array in case any in-place\n    // alterations are performed to the `provideNoopAnimations` call results in app code.\n    return [...BROWSER_NOOP_ANIMATIONS_PROVIDERS];\n}\n\n/**\n * @module\n * @description\n * Entry point for all animation APIs of the animation browser package.\n */\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of this package.\n */\n\n// This file is not used to build this module. It is only used during editing\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { BrowserAnimationsModule, NoopAnimationsModule, provideAnimations, provideNoopAnimations, AnimationRenderer as ɵAnimationRenderer, AnimationRendererFactory as ɵAnimationRendererFactory, BrowserAnimationBuilder as ɵBrowserAnimationBuilder, BrowserAnimationFactory as ɵBrowserAnimationFactory, InjectableAnimationEngine as ɵInjectableAnimationEngine };\n","/**\n * @license Angular v15.2.9\n * (c) 2010-2022 Google LLC. https://angular.io/\n * License: MIT\n */\n\nimport { ɵDomAdapter, ɵsetRootDomAdapter, ɵparseCookieValue, ɵgetDOM, DOCUMENT, ɵPLATFORM_BROWSER_ID, XhrFactory, CommonModule } from '@angular/common';\nexport { ɵgetDOM } from '@angular/common';\nimport * as i0 from '@angular/core';\nimport { InjectionToken, ApplicationInitStatus, APP_INITIALIZER, Injector, ɵglobal, Injectable, Inject, ViewEncapsulation, APP_ID, RendererStyleFlags2, ɵinternalCreateApplication, ErrorHandler, ɵsetDocument, PLATFORM_ID, PLATFORM_INITIALIZER, createPlatformFactory, platformCore, ɵTESTABILITY_GETTER, ɵTESTABILITY, Testability, NgZone, TestabilityRegistry, ɵINJECTOR_SCOPE, RendererFactory2, ApplicationModule, NgModule, Optional, SkipSelf, ɵɵinject, ApplicationRef, inject, ɵConsole, forwardRef, ɵXSS_SECURITY_URL, SecurityContext, ɵallowSanitizationBypassAndThrow, ɵunwrapSafeValue, ɵ_sanitizeUrl, ɵ_sanitizeHtml, ɵbypassSanitizationTrustHtml, ɵbypassSanitizationTrustStyle, ɵbypassSanitizationTrustScript, ɵbypassSanitizationTrustUrl, ɵbypassSanitizationTrustResourceUrl, Version } from '@angular/core';\n\n/**\n * Provides DOM operations in any browser environment.\n *\n * @security Tread carefully! Interacting with the DOM directly is dangerous and\n * can introduce XSS risks.\n */\nclass GenericBrowserDomAdapter extends ɵDomAdapter {\n    constructor() {\n        super(...arguments);\n        this.supportsDOMEvents = true;\n    }\n}\n\n/**\n * A `DomAdapter` powered by full browser DOM APIs.\n *\n * @security Tread carefully! Interacting with the DOM directly is dangerous and\n * can introduce XSS risks.\n */\n/* tslint:disable:requireParameterType no-console */\nclass BrowserDomAdapter extends GenericBrowserDomAdapter {\n    static makeCurrent() {\n        ɵsetRootDomAdapter(new BrowserDomAdapter());\n    }\n    onAndCancel(el, evt, listener) {\n        el.addEventListener(evt, listener, false);\n        // Needed to follow Dart's subscription semantic, until fix of\n        // https://code.google.com/p/dart/issues/detail?id=17406\n        return () => {\n            el.removeEventListener(evt, listener, false);\n        };\n    }\n    dispatchEvent(el, evt) {\n        el.dispatchEvent(evt);\n    }\n    remove(node) {\n        if (node.parentNode) {\n            node.parentNode.removeChild(node);\n        }\n    }\n    createElement(tagName, doc) {\n        doc = doc || this.getDefaultDocument();\n        return doc.createElement(tagName);\n    }\n    createHtmlDocument() {\n        return document.implementation.createHTMLDocument('fakeTitle');\n    }\n    getDefaultDocument() {\n        return document;\n    }\n    isElementNode(node) {\n        return node.nodeType === Node.ELEMENT_NODE;\n    }\n    isShadowRoot(node) {\n        return node instanceof DocumentFragment;\n    }\n    /** @deprecated No longer being used in Ivy code. To be removed in version 14. */\n    getGlobalEventTarget(doc, target) {\n        if (target === 'window') {\n            return window;\n        }\n        if (target === 'document') {\n            return doc;\n        }\n        if (target === 'body') {\n            return doc.body;\n        }\n        return null;\n    }\n    getBaseHref(doc) {\n        const href = getBaseElementHref();\n        return href == null ? null : relativePath(href);\n    }\n    resetBaseElement() {\n        baseElement = null;\n    }\n    getUserAgent() {\n        return window.navigator.userAgent;\n    }\n    getCookie(name) {\n        return ɵparseCookieValue(document.cookie, name);\n    }\n}\nlet baseElement = null;\nfunction getBaseElementHref() {\n    baseElement = baseElement || document.querySelector('base');\n    return baseElement ? baseElement.getAttribute('href') : null;\n}\n// based on urlUtils.js in AngularJS 1\nlet urlParsingNode;\nfunction relativePath(url) {\n    urlParsingNode = urlParsingNode || document.createElement('a');\n    urlParsingNode.setAttribute('href', url);\n    const pathName = urlParsingNode.pathname;\n    return pathName.charAt(0) === '/' ? pathName : `/${pathName}`;\n}\n\n/**\n * An id that identifies a particular application being bootstrapped, that should\n * match across the client/server boundary.\n */\nconst TRANSITION_ID = new InjectionToken('TRANSITION_ID');\nfunction appInitializerFactory(transitionId, document, injector) {\n    return () => {\n        // Wait for all application initializers to be completed before removing the styles set by\n        // the server.\n        injector.get(ApplicationInitStatus).donePromise.then(() => {\n            const dom = ɵgetDOM();\n            const styles = document.querySelectorAll(`style[ng-transition=\"${transitionId}\"]`);\n            for (let i = 0; i < styles.length; i++) {\n                dom.remove(styles[i]);\n            }\n        });\n    };\n}\nconst SERVER_TRANSITION_PROVIDERS = [\n    {\n        provide: APP_INITIALIZER,\n        useFactory: appInitializerFactory,\n        deps: [TRANSITION_ID, DOCUMENT, Injector],\n        multi: true\n    },\n];\n\nclass BrowserGetTestability {\n    addToWindow(registry) {\n        ɵglobal['getAngularTestability'] = (elem, findInAncestors = true) => {\n            const testability = registry.findTestabilityInTree(elem, findInAncestors);\n            if (testability == null) {\n                throw new Error('Could not find testability for element.');\n            }\n            return testability;\n        };\n        ɵglobal['getAllAngularTestabilities'] = () => registry.getAllTestabilities();\n        ɵglobal['getAllAngularRootElements'] = () => registry.getAllRootElements();\n        const whenAllStable = (callback /** TODO #9100 */) => {\n            const testabilities = ɵglobal['getAllAngularTestabilities']();\n            let count = testabilities.length;\n            let didWork = false;\n            const decrement = function (didWork_ /** TODO #9100 */) {\n                didWork = didWork || didWork_;\n                count--;\n                if (count == 0) {\n                    callback(didWork);\n                }\n            };\n            testabilities.forEach(function (testability /** TODO #9100 */) {\n                testability.whenStable(decrement);\n            });\n        };\n        if (!ɵglobal['frameworkStabilizers']) {\n            ɵglobal['frameworkStabilizers'] = [];\n        }\n        ɵglobal['frameworkStabilizers'].push(whenAllStable);\n    }\n    findTestabilityInTree(registry, elem, findInAncestors) {\n        if (elem == null) {\n            return null;\n        }\n        const t = registry.getTestability(elem);\n        if (t != null) {\n            return t;\n        }\n        else if (!findInAncestors) {\n            return null;\n        }\n        if (ɵgetDOM().isShadowRoot(elem)) {\n            return this.findTestabilityInTree(registry, elem.host, true);\n        }\n        return this.findTestabilityInTree(registry, elem.parentElement, true);\n    }\n}\n\n/**\n * A factory for `HttpXhrBackend` that uses the `XMLHttpRequest` browser API.\n */\nclass BrowserXhr {\n    build() {\n        return new XMLHttpRequest();\n    }\n}\nBrowserXhr.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserXhr, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nBrowserXhr.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserXhr });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserXhr, decorators: [{\n            type: Injectable\n        }] });\n\n/**\n * The injection token for the event-manager plug-in service.\n *\n * @publicApi\n */\nconst EVENT_MANAGER_PLUGINS = new InjectionToken('EventManagerPlugins');\n/**\n * An injectable service that provides event management for Angular\n * through a browser plug-in.\n *\n * @publicApi\n */\nclass EventManager {\n    /**\n     * Initializes an instance of the event-manager service.\n     */\n    constructor(plugins, _zone) {\n        this._zone = _zone;\n        this._eventNameToPlugin = new Map();\n        plugins.forEach((plugin) => {\n            plugin.manager = this;\n        });\n        this._plugins = plugins.slice().reverse();\n    }\n    /**\n     * Registers a handler for a specific element and event.\n     *\n     * @param element The HTML element to receive event notifications.\n     * @param eventName The name of the event to listen for.\n     * @param handler A function to call when the notification occurs. Receives the\n     * event object as an argument.\n     * @returns  A callback function that can be used to remove the handler.\n     */\n    addEventListener(element, eventName, handler) {\n        const plugin = this._findPluginFor(eventName);\n        return plugin.addEventListener(element, eventName, handler);\n    }\n    /**\n     * Registers a global handler for an event in a target view.\n     *\n     * @param target A target for global event notifications. One of \"window\", \"document\", or \"body\".\n     * @param eventName The name of the event to listen for.\n     * @param handler A function to call when the notification occurs. Receives the\n     * event object as an argument.\n     * @returns A callback function that can be used to remove the handler.\n     * @deprecated No longer being used in Ivy code. To be removed in version 14.\n     */\n    addGlobalEventListener(target, eventName, handler) {\n        const plugin = this._findPluginFor(eventName);\n        return plugin.addGlobalEventListener(target, eventName, handler);\n    }\n    /**\n     * Retrieves the compilation zone in which event listeners are registered.\n     */\n    getZone() {\n        return this._zone;\n    }\n    /** @internal */\n    _findPluginFor(eventName) {\n        const plugin = this._eventNameToPlugin.get(eventName);\n        if (plugin) {\n            return plugin;\n        }\n        const plugins = this._plugins;\n        for (let i = 0; i < plugins.length; i++) {\n            const plugin = plugins[i];\n            if (plugin.supports(eventName)) {\n                this._eventNameToPlugin.set(eventName, plugin);\n                return plugin;\n            }\n        }\n        throw new Error(`No event manager plugin found for event ${eventName}`);\n    }\n}\nEventManager.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: EventManager, deps: [{ token: EVENT_MANAGER_PLUGINS }, { token: i0.NgZone }], target: i0.ɵɵFactoryTarget.Injectable });\nEventManager.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: EventManager });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: EventManager, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [EVENT_MANAGER_PLUGINS]\n                }] }, { type: i0.NgZone }]; } });\nclass EventManagerPlugin {\n    constructor(_doc) {\n        this._doc = _doc;\n    }\n    addGlobalEventListener(element, eventName, handler) {\n        const target = ɵgetDOM().getGlobalEventTarget(this._doc, element);\n        if (!target) {\n            throw new Error(`Unsupported event target ${target} for event ${eventName}`);\n        }\n        return this.addEventListener(target, eventName, handler);\n    }\n}\n\nclass SharedStylesHost {\n    constructor() {\n        this.usageCount = new Map();\n    }\n    addStyles(styles) {\n        for (const style of styles) {\n            const usageCount = this.changeUsageCount(style, 1);\n            if (usageCount === 1) {\n                this.onStyleAdded(style);\n            }\n        }\n    }\n    removeStyles(styles) {\n        for (const style of styles) {\n            const usageCount = this.changeUsageCount(style, -1);\n            if (usageCount === 0) {\n                this.onStyleRemoved(style);\n            }\n        }\n    }\n    onStyleRemoved(style) { }\n    onStyleAdded(style) { }\n    getAllStyles() {\n        return this.usageCount.keys();\n    }\n    changeUsageCount(style, delta) {\n        const map = this.usageCount;\n        let usage = map.get(style) ?? 0;\n        usage += delta;\n        if (usage > 0) {\n            map.set(style, usage);\n        }\n        else {\n            map.delete(style);\n        }\n        return usage;\n    }\n    ngOnDestroy() {\n        for (const style of this.getAllStyles()) {\n            this.onStyleRemoved(style);\n        }\n        this.usageCount.clear();\n    }\n}\nSharedStylesHost.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: SharedStylesHost, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nSharedStylesHost.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: SharedStylesHost });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: SharedStylesHost, decorators: [{\n            type: Injectable\n        }] });\nclass DomSharedStylesHost extends SharedStylesHost {\n    constructor(doc) {\n        super();\n        this.doc = doc;\n        // Maps all registered host nodes to a list of style nodes that have been added to the host node.\n        this.styleRef = new Map();\n        this.hostNodes = new Set();\n        this.resetHostNodes();\n    }\n    onStyleAdded(style) {\n        for (const host of this.hostNodes) {\n            this.addStyleToHost(host, style);\n        }\n    }\n    onStyleRemoved(style) {\n        const styleRef = this.styleRef;\n        const styleElements = styleRef.get(style);\n        styleElements?.forEach(e => e.remove());\n        styleRef.delete(style);\n    }\n    ngOnDestroy() {\n        super.ngOnDestroy();\n        this.styleRef.clear();\n        this.resetHostNodes();\n    }\n    addHost(hostNode) {\n        this.hostNodes.add(hostNode);\n        for (const style of this.getAllStyles()) {\n            this.addStyleToHost(hostNode, style);\n        }\n    }\n    removeHost(hostNode) {\n        this.hostNodes.delete(hostNode);\n    }\n    addStyleToHost(host, style) {\n        const styleEl = this.doc.createElement('style');\n        styleEl.textContent = style;\n        host.appendChild(styleEl);\n        const styleElRef = this.styleRef.get(style);\n        if (styleElRef) {\n            styleElRef.push(styleEl);\n        }\n        else {\n            this.styleRef.set(style, [styleEl]);\n        }\n    }\n    resetHostNodes() {\n        const hostNodes = this.hostNodes;\n        hostNodes.clear();\n        // Re-add the head element back since this is the default host.\n        hostNodes.add(this.doc.head);\n    }\n}\nDomSharedStylesHost.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DomSharedStylesHost, deps: [{ token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable });\nDomSharedStylesHost.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DomSharedStylesHost });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DomSharedStylesHost, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }]; } });\n\nconst NAMESPACE_URIS = {\n    'svg': 'http://www.w3.org/2000/svg',\n    'xhtml': 'http://www.w3.org/1999/xhtml',\n    'xlink': 'http://www.w3.org/1999/xlink',\n    'xml': 'http://www.w3.org/XML/1998/namespace',\n    'xmlns': 'http://www.w3.org/2000/xmlns/',\n    'math': 'http://www.w3.org/1998/MathML/',\n};\nconst COMPONENT_REGEX = /%COMP%/g;\nconst NG_DEV_MODE$1 = typeof ngDevMode === 'undefined' || !!ngDevMode;\nconst COMPONENT_VARIABLE = '%COMP%';\nconst HOST_ATTR = `_nghost-${COMPONENT_VARIABLE}`;\nconst CONTENT_ATTR = `_ngcontent-${COMPONENT_VARIABLE}`;\n/**\n * The default value for the `REMOVE_STYLES_ON_COMPONENT_DESTROY` DI token.\n */\nconst REMOVE_STYLES_ON_COMPONENT_DESTROY_DEFAULT = false;\n/**\n * A [DI token](guide/glossary#di-token \"DI token definition\") that indicates whether styles\n * of destroyed components should be removed from DOM.\n *\n * By default, the value is set to `false`. This will be changed in the next major version.\n * @publicApi\n */\nconst REMOVE_STYLES_ON_COMPONENT_DESTROY = new InjectionToken('RemoveStylesOnCompDestory', {\n    providedIn: 'root',\n    factory: () => REMOVE_STYLES_ON_COMPONENT_DESTROY_DEFAULT,\n});\nfunction shimContentAttribute(componentShortId) {\n    return CONTENT_ATTR.replace(COMPONENT_REGEX, componentShortId);\n}\nfunction shimHostAttribute(componentShortId) {\n    return HOST_ATTR.replace(COMPONENT_REGEX, componentShortId);\n}\nfunction flattenStyles(compId, styles) {\n    // Cannot use `Infinity` as depth as `infinity` is not a number literal in TypeScript.\n    // See: https://github.com/microsoft/TypeScript/issues/32277\n    return styles.flat(100).map(s => s.replace(COMPONENT_REGEX, compId));\n}\nfunction decoratePreventDefault(eventHandler) {\n    // `DebugNode.triggerEventHandler` needs to know if the listener was created with\n    // decoratePreventDefault or is a listener added outside the Angular context so it can handle the\n    // two differently. In the first case, the special '__ngUnwrap__' token is passed to the unwrap\n    // the listener (see below).\n    return (event) => {\n        // Ivy uses '__ngUnwrap__' as a special token that allows us to unwrap the function\n        // so that it can be invoked programmatically by `DebugNode.triggerEventHandler`. The debug_node\n        // can inspect the listener toString contents for the existence of this special token. Because\n        // the token is a string literal, it is ensured to not be modified by compiled code.\n        if (event === '__ngUnwrap__') {\n            return eventHandler;\n        }\n        const allowDefaultBehavior = eventHandler(event);\n        if (allowDefaultBehavior === false) {\n            // TODO(tbosch): move preventDefault into event plugins...\n            event.preventDefault();\n            event.returnValue = false;\n        }\n        return undefined;\n    };\n}\nclass DomRendererFactory2 {\n    constructor(eventManager, sharedStylesHost, appId, removeStylesOnCompDestory) {\n        this.eventManager = eventManager;\n        this.sharedStylesHost = sharedStylesHost;\n        this.appId = appId;\n        this.removeStylesOnCompDestory = removeStylesOnCompDestory;\n        this.rendererByCompId = new Map();\n        this.defaultRenderer = new DefaultDomRenderer2(eventManager);\n    }\n    createRenderer(element, type) {\n        if (!element || !type) {\n            return this.defaultRenderer;\n        }\n        const renderer = this.getOrCreateRenderer(element, type);\n        // Renderers have different logic due to different encapsulation behaviours.\n        // Ex: for emulated, an attribute is added to the element.\n        if (renderer instanceof EmulatedEncapsulationDomRenderer2) {\n            renderer.applyToHost(element);\n        }\n        else if (renderer instanceof NoneEncapsulationDomRenderer) {\n            renderer.applyStyles();\n        }\n        return renderer;\n    }\n    getOrCreateRenderer(element, type) {\n        const rendererByCompId = this.rendererByCompId;\n        let renderer = rendererByCompId.get(type.id);\n        if (!renderer) {\n            const eventManager = this.eventManager;\n            const sharedStylesHost = this.sharedStylesHost;\n            const removeStylesOnCompDestory = this.removeStylesOnCompDestory;\n            switch (type.encapsulation) {\n                case ViewEncapsulation.Emulated:\n                    renderer = new EmulatedEncapsulationDomRenderer2(eventManager, sharedStylesHost, type, this.appId, removeStylesOnCompDestory);\n                    break;\n                case ViewEncapsulation.ShadowDom:\n                    return new ShadowDomRenderer(eventManager, sharedStylesHost, element, type);\n                default:\n                    renderer = new NoneEncapsulationDomRenderer(eventManager, sharedStylesHost, type, removeStylesOnCompDestory);\n                    break;\n            }\n            renderer.onDestroy = () => rendererByCompId.delete(type.id);\n            rendererByCompId.set(type.id, renderer);\n        }\n        return renderer;\n    }\n    ngOnDestroy() {\n        this.rendererByCompId.clear();\n    }\n    begin() { }\n    end() { }\n}\nDomRendererFactory2.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DomRendererFactory2, deps: [{ token: EventManager }, { token: DomSharedStylesHost }, { token: APP_ID }, { token: REMOVE_STYLES_ON_COMPONENT_DESTROY }], target: i0.ɵɵFactoryTarget.Injectable });\nDomRendererFactory2.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DomRendererFactory2 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DomRendererFactory2, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: EventManager }, { type: DomSharedStylesHost }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [APP_ID]\n                }] }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [REMOVE_STYLES_ON_COMPONENT_DESTROY]\n                }] }]; } });\nclass DefaultDomRenderer2 {\n    constructor(eventManager) {\n        this.eventManager = eventManager;\n        this.data = Object.create(null);\n        this.destroyNode = null;\n    }\n    destroy() { }\n    createElement(name, namespace) {\n        if (namespace) {\n            // TODO: `|| namespace` was added in\n            // https://github.com/angular/angular/commit/2b9cc8503d48173492c29f5a271b61126104fbdb to\n            // support how Ivy passed around the namespace URI rather than short name at the time. It did\n            // not, however extend the support to other parts of the system (setAttribute, setAttribute,\n            // and the ServerRenderer). We should decide what exactly the semantics for dealing with\n            // namespaces should be and make it consistent.\n            // Related issues:\n            // https://github.com/angular/angular/issues/44028\n            // https://github.com/angular/angular/issues/44883\n            return document.createElementNS(NAMESPACE_URIS[namespace] || namespace, name);\n        }\n        return document.createElement(name);\n    }\n    createComment(value) {\n        return document.createComment(value);\n    }\n    createText(value) {\n        return document.createTextNode(value);\n    }\n    appendChild(parent, newChild) {\n        const targetParent = isTemplateNode(parent) ? parent.content : parent;\n        targetParent.appendChild(newChild);\n    }\n    insertBefore(parent, newChild, refChild) {\n        if (parent) {\n            const targetParent = isTemplateNode(parent) ? parent.content : parent;\n            targetParent.insertBefore(newChild, refChild);\n        }\n    }\n    removeChild(parent, oldChild) {\n        if (parent) {\n            parent.removeChild(oldChild);\n        }\n    }\n    selectRootElement(selectorOrNode, preserveContent) {\n        let el = typeof selectorOrNode === 'string' ? document.querySelector(selectorOrNode) :\n            selectorOrNode;\n        if (!el) {\n            throw new Error(`The selector \"${selectorOrNode}\" did not match any elements`);\n        }\n        if (!preserveContent) {\n            el.textContent = '';\n        }\n        return el;\n    }\n    parentNode(node) {\n        return node.parentNode;\n    }\n    nextSibling(node) {\n        return node.nextSibling;\n    }\n    setAttribute(el, name, value, namespace) {\n        if (namespace) {\n            name = namespace + ':' + name;\n            const namespaceUri = NAMESPACE_URIS[namespace];\n            if (namespaceUri) {\n                el.setAttributeNS(namespaceUri, name, value);\n            }\n            else {\n                el.setAttribute(name, value);\n            }\n        }\n        else {\n            el.setAttribute(name, value);\n        }\n    }\n    removeAttribute(el, name, namespace) {\n        if (namespace) {\n            const namespaceUri = NAMESPACE_URIS[namespace];\n            if (namespaceUri) {\n                el.removeAttributeNS(namespaceUri, name);\n            }\n            else {\n                el.removeAttribute(`${namespace}:${name}`);\n            }\n        }\n        else {\n            el.removeAttribute(name);\n        }\n    }\n    addClass(el, name) {\n        el.classList.add(name);\n    }\n    removeClass(el, name) {\n        el.classList.remove(name);\n    }\n    setStyle(el, style, value, flags) {\n        if (flags & (RendererStyleFlags2.DashCase | RendererStyleFlags2.Important)) {\n            el.style.setProperty(style, value, flags & RendererStyleFlags2.Important ? 'important' : '');\n        }\n        else {\n            el.style[style] = value;\n        }\n    }\n    removeStyle(el, style, flags) {\n        if (flags & RendererStyleFlags2.DashCase) {\n            // removeProperty has no effect when used on camelCased properties.\n            el.style.removeProperty(style);\n        }\n        else {\n            el.style[style] = '';\n        }\n    }\n    setProperty(el, name, value) {\n        NG_DEV_MODE$1 && checkNoSyntheticProp(name, 'property');\n        el[name] = value;\n    }\n    setValue(node, value) {\n        node.nodeValue = value;\n    }\n    listen(target, event, callback) {\n        NG_DEV_MODE$1 && checkNoSyntheticProp(event, 'listener');\n        if (typeof target === 'string') {\n            return this.eventManager.addGlobalEventListener(target, event, decoratePreventDefault(callback));\n        }\n        return this.eventManager.addEventListener(target, event, decoratePreventDefault(callback));\n    }\n}\nconst AT_CHARCODE = (() => '@'.charCodeAt(0))();\nfunction checkNoSyntheticProp(name, nameKind) {\n    if (name.charCodeAt(0) === AT_CHARCODE) {\n        throw new Error(`Unexpected synthetic ${nameKind} ${name} found. Please make sure that:\n  - Either \\`BrowserAnimationsModule\\` or \\`NoopAnimationsModule\\` are imported in your application.\n  - There is corresponding configuration for the animation named \\`${name}\\` defined in the \\`animations\\` field of the \\`@Component\\` decorator (see https://angular.io/api/core/Component#animations).`);\n    }\n}\nfunction isTemplateNode(node) {\n    return node.tagName === 'TEMPLATE' && node.content !== undefined;\n}\nclass ShadowDomRenderer extends DefaultDomRenderer2 {\n    constructor(eventManager, sharedStylesHost, hostEl, component) {\n        super(eventManager);\n        this.sharedStylesHost = sharedStylesHost;\n        this.hostEl = hostEl;\n        this.shadowRoot = hostEl.attachShadow({ mode: 'open' });\n        this.sharedStylesHost.addHost(this.shadowRoot);\n        const styles = flattenStyles(component.id, component.styles);\n        for (const style of styles) {\n            const styleEl = document.createElement('style');\n            styleEl.textContent = style;\n            this.shadowRoot.appendChild(styleEl);\n        }\n    }\n    nodeOrShadowRoot(node) {\n        return node === this.hostEl ? this.shadowRoot : node;\n    }\n    appendChild(parent, newChild) {\n        return super.appendChild(this.nodeOrShadowRoot(parent), newChild);\n    }\n    insertBefore(parent, newChild, refChild) {\n        return super.insertBefore(this.nodeOrShadowRoot(parent), newChild, refChild);\n    }\n    removeChild(parent, oldChild) {\n        return super.removeChild(this.nodeOrShadowRoot(parent), oldChild);\n    }\n    parentNode(node) {\n        return this.nodeOrShadowRoot(super.parentNode(this.nodeOrShadowRoot(node)));\n    }\n    destroy() {\n        this.sharedStylesHost.removeHost(this.shadowRoot);\n    }\n}\nclass NoneEncapsulationDomRenderer extends DefaultDomRenderer2 {\n    constructor(eventManager, sharedStylesHost, component, removeStylesOnCompDestory, compId = component.id) {\n        super(eventManager);\n        this.sharedStylesHost = sharedStylesHost;\n        this.removeStylesOnCompDestory = removeStylesOnCompDestory;\n        this.rendererUsageCount = 0;\n        this.styles = flattenStyles(compId, component.styles);\n    }\n    applyStyles() {\n        this.sharedStylesHost.addStyles(this.styles);\n        this.rendererUsageCount++;\n    }\n    destroy() {\n        if (!this.removeStylesOnCompDestory) {\n            return;\n        }\n        this.sharedStylesHost.removeStyles(this.styles);\n        this.rendererUsageCount--;\n        if (this.rendererUsageCount === 0) {\n            this.onDestroy?.();\n        }\n    }\n}\nclass EmulatedEncapsulationDomRenderer2 extends NoneEncapsulationDomRenderer {\n    constructor(eventManager, sharedStylesHost, component, appId, removeStylesOnCompDestory) {\n        const compId = appId + '-' + component.id;\n        super(eventManager, sharedStylesHost, component, removeStylesOnCompDestory, compId);\n        this.contentAttr = shimContentAttribute(compId);\n        this.hostAttr = shimHostAttribute(compId);\n    }\n    applyToHost(element) {\n        this.applyStyles();\n        this.setAttribute(element, this.hostAttr, '');\n    }\n    createElement(parent, name) {\n        const el = super.createElement(parent, name);\n        super.setAttribute(el, this.contentAttr, '');\n        return el;\n    }\n}\n\nclass DomEventsPlugin extends EventManagerPlugin {\n    constructor(doc) {\n        super(doc);\n    }\n    // This plugin should come last in the list of plugins, because it accepts all\n    // events.\n    supports(eventName) {\n        return true;\n    }\n    addEventListener(element, eventName, handler) {\n        element.addEventListener(eventName, handler, false);\n        return () => this.removeEventListener(element, eventName, handler);\n    }\n    removeEventListener(target, eventName, callback) {\n        return target.removeEventListener(eventName, callback);\n    }\n}\nDomEventsPlugin.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DomEventsPlugin, deps: [{ token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable });\nDomEventsPlugin.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DomEventsPlugin });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DomEventsPlugin, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }]; } });\n\n/**\n * Defines supported modifiers for key events.\n */\nconst MODIFIER_KEYS = ['alt', 'control', 'meta', 'shift'];\n// The following values are here for cross-browser compatibility and to match the W3C standard\n// cf https://www.w3.org/TR/DOM-Level-3-Events-key/\nconst _keyMap = {\n    '\\b': 'Backspace',\n    '\\t': 'Tab',\n    '\\x7F': 'Delete',\n    '\\x1B': 'Escape',\n    'Del': 'Delete',\n    'Esc': 'Escape',\n    'Left': 'ArrowLeft',\n    'Right': 'ArrowRight',\n    'Up': 'ArrowUp',\n    'Down': 'ArrowDown',\n    'Menu': 'ContextMenu',\n    'Scroll': 'ScrollLock',\n    'Win': 'OS'\n};\n/**\n * Retrieves modifiers from key-event objects.\n */\nconst MODIFIER_KEY_GETTERS = {\n    'alt': (event) => event.altKey,\n    'control': (event) => event.ctrlKey,\n    'meta': (event) => event.metaKey,\n    'shift': (event) => event.shiftKey\n};\n/**\n * @publicApi\n * A browser plug-in that provides support for handling of key events in Angular.\n */\nclass KeyEventsPlugin extends EventManagerPlugin {\n    /**\n     * Initializes an instance of the browser plug-in.\n     * @param doc The document in which key events will be detected.\n     */\n    constructor(doc) {\n        super(doc);\n    }\n    /**\n     * Reports whether a named key event is supported.\n     * @param eventName The event name to query.\n     * @return True if the named key event is supported.\n     */\n    supports(eventName) {\n        return KeyEventsPlugin.parseEventName(eventName) != null;\n    }\n    /**\n     * Registers a handler for a specific element and key event.\n     * @param element The HTML element to receive event notifications.\n     * @param eventName The name of the key event to listen for.\n     * @param handler A function to call when the notification occurs. Receives the\n     * event object as an argument.\n     * @returns The key event that was registered.\n     */\n    addEventListener(element, eventName, handler) {\n        const parsedEvent = KeyEventsPlugin.parseEventName(eventName);\n        const outsideHandler = KeyEventsPlugin.eventCallback(parsedEvent['fullKey'], handler, this.manager.getZone());\n        return this.manager.getZone().runOutsideAngular(() => {\n            return ɵgetDOM().onAndCancel(element, parsedEvent['domEventName'], outsideHandler);\n        });\n    }\n    /**\n     * Parses the user provided full keyboard event definition and normalizes it for\n     * later internal use. It ensures the string is all lowercase, converts special\n     * characters to a standard spelling, and orders all the values consistently.\n     *\n     * @param eventName The name of the key event to listen for.\n     * @returns an object with the full, normalized string, and the dom event name\n     * or null in the case when the event doesn't match a keyboard event.\n     */\n    static parseEventName(eventName) {\n        const parts = eventName.toLowerCase().split('.');\n        const domEventName = parts.shift();\n        if ((parts.length === 0) || !(domEventName === 'keydown' || domEventName === 'keyup')) {\n            return null;\n        }\n        const key = KeyEventsPlugin._normalizeKey(parts.pop());\n        let fullKey = '';\n        let codeIX = parts.indexOf('code');\n        if (codeIX > -1) {\n            parts.splice(codeIX, 1);\n            fullKey = 'code.';\n        }\n        MODIFIER_KEYS.forEach(modifierName => {\n            const index = parts.indexOf(modifierName);\n            if (index > -1) {\n                parts.splice(index, 1);\n                fullKey += modifierName + '.';\n            }\n        });\n        fullKey += key;\n        if (parts.length != 0 || key.length === 0) {\n            // returning null instead of throwing to let another plugin process the event\n            return null;\n        }\n        // NOTE: Please don't rewrite this as so, as it will break JSCompiler property renaming.\n        //       The code must remain in the `result['domEventName']` form.\n        // return {domEventName, fullKey};\n        const result = {};\n        result['domEventName'] = domEventName;\n        result['fullKey'] = fullKey;\n        return result;\n    }\n    /**\n     * Determines whether the actual keys pressed match the configured key code string.\n     * The `fullKeyCode` event is normalized in the `parseEventName` method when the\n     * event is attached to the DOM during the `addEventListener` call. This is unseen\n     * by the end user and is normalized for internal consistency and parsing.\n     *\n     * @param event The keyboard event.\n     * @param fullKeyCode The normalized user defined expected key event string\n     * @returns boolean.\n     */\n    static matchEventFullKeyCode(event, fullKeyCode) {\n        let keycode = _keyMap[event.key] || event.key;\n        let key = '';\n        if (fullKeyCode.indexOf('code.') > -1) {\n            keycode = event.code;\n            key = 'code.';\n        }\n        // the keycode could be unidentified so we have to check here\n        if (keycode == null || !keycode)\n            return false;\n        keycode = keycode.toLowerCase();\n        if (keycode === ' ') {\n            keycode = 'space'; // for readability\n        }\n        else if (keycode === '.') {\n            keycode = 'dot'; // because '.' is used as a separator in event names\n        }\n        MODIFIER_KEYS.forEach(modifierName => {\n            if (modifierName !== keycode) {\n                const modifierGetter = MODIFIER_KEY_GETTERS[modifierName];\n                if (modifierGetter(event)) {\n                    key += modifierName + '.';\n                }\n            }\n        });\n        key += keycode;\n        return key === fullKeyCode;\n    }\n    /**\n     * Configures a handler callback for a key event.\n     * @param fullKey The event name that combines all simultaneous keystrokes.\n     * @param handler The function that responds to the key event.\n     * @param zone The zone in which the event occurred.\n     * @returns A callback function.\n     */\n    static eventCallback(fullKey, handler, zone) {\n        return (event) => {\n            if (KeyEventsPlugin.matchEventFullKeyCode(event, fullKey)) {\n                zone.runGuarded(() => handler(event));\n            }\n        };\n    }\n    /** @internal */\n    static _normalizeKey(keyName) {\n        // TODO: switch to a Map if the mapping grows too much\n        switch (keyName) {\n            case 'esc':\n                return 'escape';\n            default:\n                return keyName;\n        }\n    }\n}\nKeyEventsPlugin.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: KeyEventsPlugin, deps: [{ token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable });\nKeyEventsPlugin.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: KeyEventsPlugin });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: KeyEventsPlugin, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }]; } });\n\nconst NG_DEV_MODE = typeof ngDevMode === 'undefined' || !!ngDevMode;\n/**\n * Bootstraps an instance of an Angular application and renders a standalone component as the\n * application's root component. More information about standalone components can be found in [this\n * guide](guide/standalone-components).\n *\n * @usageNotes\n * The root component passed into this function *must* be a standalone one (should have the\n * `standalone: true` flag in the `@Component` decorator config).\n *\n * ```typescript\n * @Component({\n *   standalone: true,\n *   template: 'Hello world!'\n * })\n * class RootComponent {}\n *\n * const appRef: ApplicationRef = await bootstrapApplication(RootComponent);\n * ```\n *\n * You can add the list of providers that should be available in the application injector by\n * specifying the `providers` field in an object passed as the second argument:\n *\n * ```typescript\n * await bootstrapApplication(RootComponent, {\n *   providers: [\n *     {provide: BACKEND_URL, useValue: 'https://yourdomain.com/api'}\n *   ]\n * });\n * ```\n *\n * The `importProvidersFrom` helper method can be used to collect all providers from any\n * existing NgModule (and transitively from all NgModules that it imports):\n *\n * ```typescript\n * await bootstrapApplication(RootComponent, {\n *   providers: [\n *     importProvidersFrom(SomeNgModule)\n *   ]\n * });\n * ```\n *\n * Note: the `bootstrapApplication` method doesn't include [Testability](api/core/Testability) by\n * default. You can add [Testability](api/core/Testability) by getting the list of necessary\n * providers using `provideProtractorTestingSupport()` function and adding them into the `providers`\n * array, for example:\n *\n * ```typescript\n * import {provideProtractorTestingSupport} from '@angular/platform-browser';\n *\n * await bootstrapApplication(RootComponent, {providers: [provideProtractorTestingSupport()]});\n * ```\n *\n * @param rootComponent A reference to a standalone component that should be rendered.\n * @param options Extra configuration for the bootstrap operation, see `ApplicationConfig` for\n *     additional info.\n * @returns A promise that returns an `ApplicationRef` instance once resolved.\n *\n * @publicApi\n */\nfunction bootstrapApplication(rootComponent, options) {\n    return ɵinternalCreateApplication({ rootComponent, ...createProvidersConfig(options) });\n}\n/**\n * Create an instance of an Angular application without bootstrapping any components. This is useful\n * for the situation where one wants to decouple application environment creation (a platform and\n * associated injectors) from rendering components on a screen. Components can be subsequently\n * bootstrapped on the returned `ApplicationRef`.\n *\n * @param options Extra configuration for the application environment, see `ApplicationConfig` for\n *     additional info.\n * @returns A promise that returns an `ApplicationRef` instance once resolved.\n *\n * @publicApi\n */\nfunction createApplication(options) {\n    return ɵinternalCreateApplication(createProvidersConfig(options));\n}\nfunction createProvidersConfig(options) {\n    return {\n        appProviders: [\n            ...BROWSER_MODULE_PROVIDERS,\n            ...(options?.providers ?? []),\n        ],\n        platformProviders: INTERNAL_BROWSER_PLATFORM_PROVIDERS\n    };\n}\n/**\n * Returns a set of providers required to setup [Testability](api/core/Testability) for an\n * application bootstrapped using the `bootstrapApplication` function. The set of providers is\n * needed to support testing an application with Protractor (which relies on the Testability APIs\n * to be present).\n *\n * @returns An array of providers required to setup Testability for an application and make it\n *     available for testing using Protractor.\n *\n * @publicApi\n */\nfunction provideProtractorTestingSupport() {\n    // Return a copy to prevent changes to the original array in case any in-place\n    // alterations are performed to the `provideProtractorTestingSupport` call results in app code.\n    return [...TESTABILITY_PROVIDERS];\n}\nfunction initDomAdapter() {\n    BrowserDomAdapter.makeCurrent();\n}\nfunction errorHandler() {\n    return new ErrorHandler();\n}\nfunction _document() {\n    // Tell ivy about the global document\n    ɵsetDocument(document);\n    return document;\n}\nconst INTERNAL_BROWSER_PLATFORM_PROVIDERS = [\n    { provide: PLATFORM_ID, useValue: ɵPLATFORM_BROWSER_ID },\n    { provide: PLATFORM_INITIALIZER, useValue: initDomAdapter, multi: true },\n    { provide: DOCUMENT, useFactory: _document, deps: [] },\n];\n/**\n * A factory function that returns a `PlatformRef` instance associated with browser service\n * providers.\n *\n * @publicApi\n */\nconst platformBrowser = createPlatformFactory(platformCore, 'browser', INTERNAL_BROWSER_PLATFORM_PROVIDERS);\n/**\n * Internal marker to signal whether providers from the `BrowserModule` are already present in DI.\n * This is needed to avoid loading `BrowserModule` providers twice. We can't rely on the\n * `BrowserModule` presence itself, since the standalone-based bootstrap just imports\n * `BrowserModule` providers without referencing the module itself.\n */\nconst BROWSER_MODULE_PROVIDERS_MARKER = new InjectionToken(NG_DEV_MODE ? 'BrowserModule Providers Marker' : '');\nconst TESTABILITY_PROVIDERS = [\n    {\n        provide: ɵTESTABILITY_GETTER,\n        useClass: BrowserGetTestability,\n        deps: [],\n    },\n    {\n        provide: ɵTESTABILITY,\n        useClass: Testability,\n        deps: [NgZone, TestabilityRegistry, ɵTESTABILITY_GETTER]\n    },\n    {\n        provide: Testability,\n        useClass: Testability,\n        deps: [NgZone, TestabilityRegistry, ɵTESTABILITY_GETTER]\n    }\n];\nconst BROWSER_MODULE_PROVIDERS = [\n    { provide: ɵINJECTOR_SCOPE, useValue: 'root' },\n    { provide: ErrorHandler, useFactory: errorHandler, deps: [] }, {\n        provide: EVENT_MANAGER_PLUGINS,\n        useClass: DomEventsPlugin,\n        multi: true,\n        deps: [DOCUMENT, NgZone, PLATFORM_ID]\n    },\n    { provide: EVENT_MANAGER_PLUGINS, useClass: KeyEventsPlugin, multi: true, deps: [DOCUMENT] }, {\n        provide: DomRendererFactory2,\n        useClass: DomRendererFactory2,\n        deps: [EventManager, DomSharedStylesHost, APP_ID, REMOVE_STYLES_ON_COMPONENT_DESTROY]\n    },\n    { provide: RendererFactory2, useExisting: DomRendererFactory2 },\n    { provide: SharedStylesHost, useExisting: DomSharedStylesHost },\n    { provide: DomSharedStylesHost, useClass: DomSharedStylesHost, deps: [DOCUMENT] },\n    { provide: EventManager, useClass: EventManager, deps: [EVENT_MANAGER_PLUGINS, NgZone] },\n    { provide: XhrFactory, useClass: BrowserXhr, deps: [] },\n    NG_DEV_MODE ? { provide: BROWSER_MODULE_PROVIDERS_MARKER, useValue: true } : []\n];\n/**\n * Exports required infrastructure for all Angular apps.\n * Included by default in all Angular apps created with the CLI\n * `new` command.\n * Re-exports `CommonModule` and `ApplicationModule`, making their\n * exports and providers available to all apps.\n *\n * @publicApi\n */\nclass BrowserModule {\n    constructor(providersAlreadyPresent) {\n        if (NG_DEV_MODE && providersAlreadyPresent) {\n            throw new Error(`Providers from the \\`BrowserModule\\` have already been loaded. If you need access ` +\n                `to common directives such as NgIf and NgFor, import the \\`CommonModule\\` instead.`);\n        }\n    }\n    /**\n     * Configures a browser-based app to transition from a server-rendered app, if\n     * one is present on the page.\n     *\n     * @param params An object containing an identifier for the app to transition.\n     * The ID must match between the client and server versions of the app.\n     * @returns The reconfigured `BrowserModule` to import into the app's root `AppModule`.\n     */\n    static withServerTransition(params) {\n        return {\n            ngModule: BrowserModule,\n            providers: [\n                { provide: APP_ID, useValue: params.appId },\n                { provide: TRANSITION_ID, useExisting: APP_ID },\n                SERVER_TRANSITION_PROVIDERS,\n            ],\n        };\n    }\n}\nBrowserModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserModule, deps: [{ token: BROWSER_MODULE_PROVIDERS_MARKER, optional: true, skipSelf: true }], target: i0.ɵɵFactoryTarget.NgModule });\nBrowserModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserModule, exports: [CommonModule, ApplicationModule] });\nBrowserModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserModule, providers: [\n        ...BROWSER_MODULE_PROVIDERS,\n        ...TESTABILITY_PROVIDERS\n    ], imports: [CommonModule, ApplicationModule] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    providers: [\n                        ...BROWSER_MODULE_PROVIDERS,\n                        ...TESTABILITY_PROVIDERS\n                    ],\n                    exports: [CommonModule, ApplicationModule],\n                }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: SkipSelf\n                }, {\n                    type: Inject,\n                    args: [BROWSER_MODULE_PROVIDERS_MARKER]\n                }] }]; } });\n\n/**\n * Factory to create a `Meta` service instance for the current DOM document.\n */\nfunction createMeta() {\n    return new Meta(ɵɵinject(DOCUMENT));\n}\n/**\n * A service for managing HTML `<meta>` tags.\n *\n * Properties of the `MetaDefinition` object match the attributes of the\n * HTML `<meta>` tag. These tags define document metadata that is important for\n * things like configuring a Content Security Policy, defining browser compatibility\n * and security settings, setting HTTP Headers, defining rich content for social sharing,\n * and Search Engine Optimization (SEO).\n *\n * To identify specific `<meta>` tags in a document, use an attribute selection\n * string in the format `\"tag_attribute='value string'\"`.\n * For example, an `attrSelector` value of `\"name='description'\"` matches a tag\n * whose `name` attribute has the value `\"description\"`.\n * Selectors are used with the `querySelector()` Document method,\n * in the format `meta[{attrSelector}]`.\n *\n * @see [HTML meta tag](https://developer.mozilla.org/docs/Web/HTML/Element/meta)\n * @see [Document.querySelector()](https://developer.mozilla.org/docs/Web/API/Document/querySelector)\n *\n *\n * @publicApi\n */\nclass Meta {\n    constructor(_doc) {\n        this._doc = _doc;\n        this._dom = ɵgetDOM();\n    }\n    /**\n     * Retrieves or creates a specific `<meta>` tag element in the current HTML document.\n     * In searching for an existing tag, Angular attempts to match the `name` or `property` attribute\n     * values in the provided tag definition, and verifies that all other attribute values are equal.\n     * If an existing element is found, it is returned and is not modified in any way.\n     * @param tag The definition of a `<meta>` element to match or create.\n     * @param forceCreation True to create a new element without checking whether one already exists.\n     * @returns The existing element with the same attributes and values if found,\n     * the new element if no match is found, or `null` if the tag parameter is not defined.\n     */\n    addTag(tag, forceCreation = false) {\n        if (!tag)\n            return null;\n        return this._getOrCreateElement(tag, forceCreation);\n    }\n    /**\n     * Retrieves or creates a set of `<meta>` tag elements in the current HTML document.\n     * In searching for an existing tag, Angular attempts to match the `name` or `property` attribute\n     * values in the provided tag definition, and verifies that all other attribute values are equal.\n     * @param tags An array of tag definitions to match or create.\n     * @param forceCreation True to create new elements without checking whether they already exist.\n     * @returns The matching elements if found, or the new elements.\n     */\n    addTags(tags, forceCreation = false) {\n        if (!tags)\n            return [];\n        return tags.reduce((result, tag) => {\n            if (tag) {\n                result.push(this._getOrCreateElement(tag, forceCreation));\n            }\n            return result;\n        }, []);\n    }\n    /**\n     * Retrieves a `<meta>` tag element in the current HTML document.\n     * @param attrSelector The tag attribute and value to match against, in the format\n     * `\"tag_attribute='value string'\"`.\n     * @returns The matching element, if any.\n     */\n    getTag(attrSelector) {\n        if (!attrSelector)\n            return null;\n        return this._doc.querySelector(`meta[${attrSelector}]`) || null;\n    }\n    /**\n     * Retrieves a set of `<meta>` tag elements in the current HTML document.\n     * @param attrSelector The tag attribute and value to match against, in the format\n     * `\"tag_attribute='value string'\"`.\n     * @returns The matching elements, if any.\n     */\n    getTags(attrSelector) {\n        if (!attrSelector)\n            return [];\n        const list /*NodeList*/ = this._doc.querySelectorAll(`meta[${attrSelector}]`);\n        return list ? [].slice.call(list) : [];\n    }\n    /**\n     * Modifies an existing `<meta>` tag element in the current HTML document.\n     * @param tag The tag description with which to replace the existing tag content.\n     * @param selector A tag attribute and value to match against, to identify\n     * an existing tag. A string in the format `\"tag_attribute=`value string`\"`.\n     * If not supplied, matches a tag with the same `name` or `property` attribute value as the\n     * replacement tag.\n     * @return The modified element.\n     */\n    updateTag(tag, selector) {\n        if (!tag)\n            return null;\n        selector = selector || this._parseSelector(tag);\n        const meta = this.getTag(selector);\n        if (meta) {\n            return this._setMetaElementAttributes(tag, meta);\n        }\n        return this._getOrCreateElement(tag, true);\n    }\n    /**\n     * Removes an existing `<meta>` tag element from the current HTML document.\n     * @param attrSelector A tag attribute and value to match against, to identify\n     * an existing tag. A string in the format `\"tag_attribute=`value string`\"`.\n     */\n    removeTag(attrSelector) {\n        this.removeTagElement(this.getTag(attrSelector));\n    }\n    /**\n     * Removes an existing `<meta>` tag element from the current HTML document.\n     * @param meta The tag definition to match against to identify an existing tag.\n     */\n    removeTagElement(meta) {\n        if (meta) {\n            this._dom.remove(meta);\n        }\n    }\n    _getOrCreateElement(meta, forceCreation = false) {\n        if (!forceCreation) {\n            const selector = this._parseSelector(meta);\n            // It's allowed to have multiple elements with the same name so it's not enough to\n            // just check that element with the same name already present on the page. We also need to\n            // check if element has tag attributes\n            const elem = this.getTags(selector).filter(elem => this._containsAttributes(meta, elem))[0];\n            if (elem !== undefined)\n                return elem;\n        }\n        const element = this._dom.createElement('meta');\n        this._setMetaElementAttributes(meta, element);\n        const head = this._doc.getElementsByTagName('head')[0];\n        head.appendChild(element);\n        return element;\n    }\n    _setMetaElementAttributes(tag, el) {\n        Object.keys(tag).forEach((prop) => el.setAttribute(this._getMetaKeyMap(prop), tag[prop]));\n        return el;\n    }\n    _parseSelector(tag) {\n        const attr = tag.name ? 'name' : 'property';\n        return `${attr}=\"${tag[attr]}\"`;\n    }\n    _containsAttributes(tag, elem) {\n        return Object.keys(tag).every((key) => elem.getAttribute(this._getMetaKeyMap(key)) === tag[key]);\n    }\n    _getMetaKeyMap(prop) {\n        return META_KEYS_MAP[prop] || prop;\n    }\n}\nMeta.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: Meta, deps: [{ token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable });\nMeta.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: Meta, providedIn: 'root', useFactory: createMeta, deps: [] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: Meta, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root', useFactory: createMeta, deps: [] }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }]; } });\n/**\n * Mapping for MetaDefinition properties with their correct meta attribute names\n */\nconst META_KEYS_MAP = {\n    httpEquiv: 'http-equiv'\n};\n\n/**\n * Factory to create Title service.\n */\nfunction createTitle() {\n    return new Title(ɵɵinject(DOCUMENT));\n}\n/**\n * A service that can be used to get and set the title of a current HTML document.\n *\n * Since an Angular application can't be bootstrapped on the entire HTML document (`<html>` tag)\n * it is not possible to bind to the `text` property of the `HTMLTitleElement` elements\n * (representing the `<title>` tag). Instead, this service can be used to set and get the current\n * title value.\n *\n * @publicApi\n */\nclass Title {\n    constructor(_doc) {\n        this._doc = _doc;\n    }\n    /**\n     * Get the title of the current HTML document.\n     */\n    getTitle() {\n        return this._doc.title;\n    }\n    /**\n     * Set the title of the current HTML document.\n     * @param newTitle\n     */\n    setTitle(newTitle) {\n        this._doc.title = newTitle || '';\n    }\n}\nTitle.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: Title, deps: [{ token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable });\nTitle.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: Title, providedIn: 'root', useFactory: createTitle, deps: [] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: Title, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root', useFactory: createTitle, deps: [] }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }]; } });\n\n/**\n * Exports the value under a given `name` in the global property `ng`. For example `ng.probe` if\n * `name` is `'probe'`.\n * @param name Name under which it will be exported. Keep in mind this will be a property of the\n * global `ng` object.\n * @param value The value to export.\n */\nfunction exportNgVar(name, value) {\n    if (typeof COMPILED === 'undefined' || !COMPILED) {\n        // Note: we can't export `ng` when using closure enhanced optimization as:\n        // - closure declares globals itself for minified names, which sometimes clobber our `ng` global\n        // - we can't declare a closure extern as the namespace `ng` is already used within Google\n        //   for typings for angularJS (via `goog.provide('ng....')`).\n        const ng = ɵglobal['ng'] = ɵglobal['ng'] || {};\n        ng[name] = value;\n    }\n}\n\nconst win = typeof window !== 'undefined' && window || {};\n\nclass ChangeDetectionPerfRecord {\n    constructor(msPerTick, numTicks) {\n        this.msPerTick = msPerTick;\n        this.numTicks = numTicks;\n    }\n}\n/**\n * Entry point for all Angular profiling-related debug tools. This object\n * corresponds to the `ng.profiler` in the dev console.\n */\nclass AngularProfiler {\n    constructor(ref) {\n        this.appRef = ref.injector.get(ApplicationRef);\n    }\n    // tslint:disable:no-console\n    /**\n     * Exercises change detection in a loop and then prints the average amount of\n     * time in milliseconds how long a single round of change detection takes for\n     * the current state of the UI. It runs a minimum of 5 rounds for a minimum\n     * of 500 milliseconds.\n     *\n     * Optionally, a user may pass a `config` parameter containing a map of\n     * options. Supported options are:\n     *\n     * `record` (boolean) - causes the profiler to record a CPU profile while\n     * it exercises the change detector. Example:\n     *\n     * ```\n     * ng.profiler.timeChangeDetection({record: true})\n     * ```\n     */\n    timeChangeDetection(config) {\n        const record = config && config['record'];\n        const profileName = 'Change Detection';\n        // Profiler is not available in Android browsers without dev tools opened\n        const isProfilerAvailable = win.console.profile != null;\n        if (record && isProfilerAvailable) {\n            win.console.profile(profileName);\n        }\n        const start = performanceNow();\n        let numTicks = 0;\n        while (numTicks < 5 || (performanceNow() - start) < 500) {\n            this.appRef.tick();\n            numTicks++;\n        }\n        const end = performanceNow();\n        if (record && isProfilerAvailable) {\n            win.console.profileEnd(profileName);\n        }\n        const msPerTick = (end - start) / numTicks;\n        win.console.log(`ran ${numTicks} change detection cycles`);\n        win.console.log(`${msPerTick.toFixed(2)} ms per check`);\n        return new ChangeDetectionPerfRecord(msPerTick, numTicks);\n    }\n}\nfunction performanceNow() {\n    return win.performance && win.performance.now ? win.performance.now() :\n        new Date().getTime();\n}\n\nconst PROFILER_GLOBAL_NAME = 'profiler';\n/**\n * Enabled Angular debug tools that are accessible via your browser's\n * developer console.\n *\n * Usage:\n *\n * 1. Open developer console (e.g. in Chrome Ctrl + Shift + j)\n * 1. Type `ng.` (usually the console will show auto-complete suggestion)\n * 1. Try the change detection profiler `ng.profiler.timeChangeDetection()`\n *    then hit Enter.\n *\n * @publicApi\n */\nfunction enableDebugTools(ref) {\n    exportNgVar(PROFILER_GLOBAL_NAME, new AngularProfiler(ref));\n    return ref;\n}\n/**\n * Disables Angular tools.\n *\n * @publicApi\n */\nfunction disableDebugTools() {\n    exportNgVar(PROFILER_GLOBAL_NAME, null);\n}\n\nfunction escapeHtml(text) {\n    const escapedText = {\n        '&': '&a;',\n        '\"': '&q;',\n        '\\'': '&s;',\n        '<': '&l;',\n        '>': '&g;',\n    };\n    return text.replace(/[&\"'<>]/g, s => escapedText[s]);\n}\nfunction unescapeHtml(text) {\n    const unescapedText = {\n        '&a;': '&',\n        '&q;': '\"',\n        '&s;': '\\'',\n        '&l;': '<',\n        '&g;': '>',\n    };\n    return text.replace(/&[^;]+;/g, s => unescapedText[s]);\n}\n/**\n * Create a `StateKey<T>` that can be used to store value of type T with `TransferState`.\n *\n * Example:\n *\n * ```\n * const COUNTER_KEY = makeStateKey<number>('counter');\n * let value = 10;\n *\n * transferState.set(COUNTER_KEY, value);\n * ```\n *\n * @publicApi\n */\nfunction makeStateKey(key) {\n    return key;\n}\n/**\n * A key value store that is transferred from the application on the server side to the application\n * on the client side.\n *\n * The `TransferState` is available as an injectable token.\n * On the client, just inject this token using DI and use it, it will be lazily initialized.\n * On the server it's already included if `renderApplication` function is used. Otherwise, import\n * the `ServerTransferStateModule` module to make the `TransferState` available.\n *\n * The values in the store are serialized/deserialized using JSON.stringify/JSON.parse. So only\n * boolean, number, string, null and non-class objects will be serialized and deserialized in a\n * non-lossy manner.\n *\n * @publicApi\n */\nclass TransferState {\n    constructor() {\n        this.store = {};\n        this.onSerializeCallbacks = {};\n        this.store = retrieveTransferredState(inject(DOCUMENT), inject(APP_ID));\n    }\n    /**\n     * Get the value corresponding to a key. Return `defaultValue` if key is not found.\n     */\n    get(key, defaultValue) {\n        return this.store[key] !== undefined ? this.store[key] : defaultValue;\n    }\n    /**\n     * Set the value corresponding to a key.\n     */\n    set(key, value) {\n        this.store[key] = value;\n    }\n    /**\n     * Remove a key from the store.\n     */\n    remove(key) {\n        delete this.store[key];\n    }\n    /**\n     * Test whether a key exists in the store.\n     */\n    hasKey(key) {\n        return this.store.hasOwnProperty(key);\n    }\n    /**\n     * Indicates whether the state is empty.\n     */\n    get isEmpty() {\n        return Object.keys(this.store).length === 0;\n    }\n    /**\n     * Register a callback to provide the value for a key when `toJson` is called.\n     */\n    onSerialize(key, callback) {\n        this.onSerializeCallbacks[key] = callback;\n    }\n    /**\n     * Serialize the current state of the store to JSON.\n     */\n    toJson() {\n        // Call the onSerialize callbacks and put those values into the store.\n        for (const key in this.onSerializeCallbacks) {\n            if (this.onSerializeCallbacks.hasOwnProperty(key)) {\n                try {\n                    this.store[key] = this.onSerializeCallbacks[key]();\n                }\n                catch (e) {\n                    console.warn('Exception in onSerialize callback: ', e);\n                }\n            }\n        }\n        return JSON.stringify(this.store);\n    }\n}\nTransferState.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: TransferState, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nTransferState.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: TransferState, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: TransferState, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return []; } });\nfunction retrieveTransferredState(doc, appId) {\n    // Locate the script tag with the JSON data transferred from the server.\n    // The id of the script tag is set to the Angular appId + 'state'.\n    const script = doc.getElementById(appId + '-state');\n    let initialState = {};\n    if (script && script.textContent) {\n        try {\n            // Avoid using any here as it triggers lint errors in google3 (any is not allowed).\n            initialState = JSON.parse(unescapeHtml(script.textContent));\n        }\n        catch (e) {\n            console.warn('Exception while restoring TransferState for app ' + appId, e);\n        }\n    }\n    return initialState;\n}\n/**\n * NgModule to install on the client side while using the `TransferState` to transfer state from\n * server to client.\n *\n * @publicApi\n * @deprecated no longer needed, you can inject the `TransferState` in an app without providing\n *     this module.\n */\nclass BrowserTransferStateModule {\n}\nBrowserTransferStateModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserTransferStateModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nBrowserTransferStateModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserTransferStateModule });\nBrowserTransferStateModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserTransferStateModule });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: BrowserTransferStateModule, decorators: [{\n            type: NgModule,\n            args: [{}]\n        }] });\n\n/**\n * Predicates for use with {@link DebugElement}'s query functions.\n *\n * @publicApi\n */\nclass By {\n    /**\n     * Match all nodes.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * {@example platform-browser/dom/debug/ts/by/by.ts region='by_all'}\n     */\n    static all() {\n        return () => true;\n    }\n    /**\n     * Match elements by the given CSS selector.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * {@example platform-browser/dom/debug/ts/by/by.ts region='by_css'}\n     */\n    static css(selector) {\n        return (debugElement) => {\n            return debugElement.nativeElement != null ?\n                elementMatches(debugElement.nativeElement, selector) :\n                false;\n        };\n    }\n    /**\n     * Match nodes that have the given directive present.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * {@example platform-browser/dom/debug/ts/by/by.ts region='by_directive'}\n     */\n    static directive(type) {\n        return (debugNode) => debugNode.providerTokens.indexOf(type) !== -1;\n    }\n}\nfunction elementMatches(n, selector) {\n    if (ɵgetDOM().isElementNode(n)) {\n        return n.matches && n.matches(selector) ||\n            n.msMatchesSelector && n.msMatchesSelector(selector) ||\n            n.webkitMatchesSelector && n.webkitMatchesSelector(selector);\n    }\n    return false;\n}\n\n/**\n * Supported HammerJS recognizer event names.\n */\nconst EVENT_NAMES = {\n    // pan\n    'pan': true,\n    'panstart': true,\n    'panmove': true,\n    'panend': true,\n    'pancancel': true,\n    'panleft': true,\n    'panright': true,\n    'panup': true,\n    'pandown': true,\n    // pinch\n    'pinch': true,\n    'pinchstart': true,\n    'pinchmove': true,\n    'pinchend': true,\n    'pinchcancel': true,\n    'pinchin': true,\n    'pinchout': true,\n    // press\n    'press': true,\n    'pressup': true,\n    // rotate\n    'rotate': true,\n    'rotatestart': true,\n    'rotatemove': true,\n    'rotateend': true,\n    'rotatecancel': true,\n    // swipe\n    'swipe': true,\n    'swipeleft': true,\n    'swiperight': true,\n    'swipeup': true,\n    'swipedown': true,\n    // tap\n    'tap': true,\n    'doubletap': true\n};\n/**\n * DI token for providing [HammerJS](https://hammerjs.github.io/) support to Angular.\n * @see `HammerGestureConfig`\n *\n * @ngModule HammerModule\n * @publicApi\n */\nconst HAMMER_GESTURE_CONFIG = new InjectionToken('HammerGestureConfig');\n/**\n * Injection token used to provide a {@link HammerLoader} to Angular.\n *\n * @publicApi\n */\nconst HAMMER_LOADER = new InjectionToken('HammerLoader');\n/**\n * An injectable [HammerJS Manager](https://hammerjs.github.io/api/#hammermanager)\n * for gesture recognition. Configures specific event recognition.\n * @publicApi\n */\nclass HammerGestureConfig {\n    constructor() {\n        /**\n         * A set of supported event names for gestures to be used in Angular.\n         * Angular supports all built-in recognizers, as listed in\n         * [HammerJS documentation](https://hammerjs.github.io/).\n         */\n        this.events = [];\n        /**\n         * Maps gesture event names to a set of configuration options\n         * that specify overrides to the default values for specific properties.\n         *\n         * The key is a supported event name to be configured,\n         * and the options object contains a set of properties, with override values\n         * to be applied to the named recognizer event.\n         * For example, to disable recognition of the rotate event, specify\n         *  `{\"rotate\": {\"enable\": false}}`.\n         *\n         * Properties that are not present take the HammerJS default values.\n         * For information about which properties are supported for which events,\n         * and their allowed and default values, see\n         * [HammerJS documentation](https://hammerjs.github.io/).\n         *\n         */\n        this.overrides = {};\n    }\n    /**\n     * Creates a [HammerJS Manager](https://hammerjs.github.io/api/#hammermanager)\n     * and attaches it to a given HTML element.\n     * @param element The element that will recognize gestures.\n     * @returns A HammerJS event-manager object.\n     */\n    buildHammer(element) {\n        const mc = new Hammer(element, this.options);\n        mc.get('pinch').set({ enable: true });\n        mc.get('rotate').set({ enable: true });\n        for (const eventName in this.overrides) {\n            mc.get(eventName).set(this.overrides[eventName]);\n        }\n        return mc;\n    }\n}\nHammerGestureConfig.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: HammerGestureConfig, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nHammerGestureConfig.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: HammerGestureConfig });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: HammerGestureConfig, decorators: [{\n            type: Injectable\n        }] });\n/**\n * Event plugin that adds Hammer support to an application.\n *\n * @ngModule HammerModule\n */\nclass HammerGesturesPlugin extends EventManagerPlugin {\n    constructor(doc, _config, console, loader) {\n        super(doc);\n        this._config = _config;\n        this.console = console;\n        this.loader = loader;\n        this._loaderPromise = null;\n    }\n    supports(eventName) {\n        if (!EVENT_NAMES.hasOwnProperty(eventName.toLowerCase()) && !this.isCustomEvent(eventName)) {\n            return false;\n        }\n        if (!window.Hammer && !this.loader) {\n            if (typeof ngDevMode === 'undefined' || ngDevMode) {\n                this.console.warn(`The \"${eventName}\" event cannot be bound because Hammer.JS is not ` +\n                    `loaded and no custom loader has been specified.`);\n            }\n            return false;\n        }\n        return true;\n    }\n    addEventListener(element, eventName, handler) {\n        const zone = this.manager.getZone();\n        eventName = eventName.toLowerCase();\n        // If Hammer is not present but a loader is specified, we defer adding the event listener\n        // until Hammer is loaded.\n        if (!window.Hammer && this.loader) {\n            this._loaderPromise = this._loaderPromise || zone.runOutsideAngular(() => this.loader());\n            // This `addEventListener` method returns a function to remove the added listener.\n            // Until Hammer is loaded, the returned function needs to *cancel* the registration rather\n            // than remove anything.\n            let cancelRegistration = false;\n            let deregister = () => {\n                cancelRegistration = true;\n            };\n            zone.runOutsideAngular(() => this._loaderPromise\n                .then(() => {\n                // If Hammer isn't actually loaded when the custom loader resolves, give up.\n                if (!window.Hammer) {\n                    if (typeof ngDevMode === 'undefined' || ngDevMode) {\n                        this.console.warn(`The custom HAMMER_LOADER completed, but Hammer.JS is not present.`);\n                    }\n                    deregister = () => { };\n                    return;\n                }\n                if (!cancelRegistration) {\n                    // Now that Hammer is loaded and the listener is being loaded for real,\n                    // the deregistration function changes from canceling registration to\n                    // removal.\n                    deregister = this.addEventListener(element, eventName, handler);\n                }\n            })\n                .catch(() => {\n                if (typeof ngDevMode === 'undefined' || ngDevMode) {\n                    this.console.warn(`The \"${eventName}\" event cannot be bound because the custom ` +\n                        `Hammer.JS loader failed.`);\n                }\n                deregister = () => { };\n            }));\n            // Return a function that *executes* `deregister` (and not `deregister` itself) so that we\n            // can change the behavior of `deregister` once the listener is added. Using a closure in\n            // this way allows us to avoid any additional data structures to track listener removal.\n            return () => {\n                deregister();\n            };\n        }\n        return zone.runOutsideAngular(() => {\n            // Creating the manager bind events, must be done outside of angular\n            const mc = this._config.buildHammer(element);\n            const callback = function (eventObj) {\n                zone.runGuarded(function () {\n                    handler(eventObj);\n                });\n            };\n            mc.on(eventName, callback);\n            return () => {\n                mc.off(eventName, callback);\n                // destroy mc to prevent memory leak\n                if (typeof mc.destroy === 'function') {\n                    mc.destroy();\n                }\n            };\n        });\n    }\n    isCustomEvent(eventName) {\n        return this._config.events.indexOf(eventName) > -1;\n    }\n}\nHammerGesturesPlugin.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: HammerGesturesPlugin, deps: [{ token: DOCUMENT }, { token: HAMMER_GESTURE_CONFIG }, { token: i0.ɵConsole }, { token: HAMMER_LOADER, optional: true }], target: i0.ɵɵFactoryTarget.Injectable });\nHammerGesturesPlugin.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: HammerGesturesPlugin });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: HammerGesturesPlugin, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }, { type: HammerGestureConfig, decorators: [{\n                    type: Inject,\n                    args: [HAMMER_GESTURE_CONFIG]\n                }] }, { type: i0.ɵConsole }, { type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [HAMMER_LOADER]\n                }] }]; } });\n/**\n * Adds support for HammerJS.\n *\n * Import this module at the root of your application so that Angular can work with\n * HammerJS to detect gesture events.\n *\n * Note that applications still need to include the HammerJS script itself. This module\n * simply sets up the coordination layer between HammerJS and Angular's EventManager.\n *\n * @publicApi\n */\nclass HammerModule {\n}\nHammerModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: HammerModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });\nHammerModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.9\", ngImport: i0, type: HammerModule });\nHammerModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: HammerModule, providers: [\n        {\n            provide: EVENT_MANAGER_PLUGINS,\n            useClass: HammerGesturesPlugin,\n            multi: true,\n            deps: [DOCUMENT, HAMMER_GESTURE_CONFIG, ɵConsole, [new Optional(), HAMMER_LOADER]]\n        },\n        { provide: HAMMER_GESTURE_CONFIG, useClass: HammerGestureConfig, deps: [] },\n    ] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: HammerModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    providers: [\n                        {\n                            provide: EVENT_MANAGER_PLUGINS,\n                            useClass: HammerGesturesPlugin,\n                            multi: true,\n                            deps: [DOCUMENT, HAMMER_GESTURE_CONFIG, ɵConsole, [new Optional(), HAMMER_LOADER]]\n                        },\n                        { provide: HAMMER_GESTURE_CONFIG, useClass: HammerGestureConfig, deps: [] },\n                    ]\n                }]\n        }] });\n\n/**\n * DomSanitizer helps preventing Cross Site Scripting Security bugs (XSS) by sanitizing\n * values to be safe to use in the different DOM contexts.\n *\n * For example, when binding a URL in an `<a [href]=\"someValue\">` hyperlink, `someValue` will be\n * sanitized so that an attacker cannot inject e.g. a `javascript:` URL that would execute code on\n * the website.\n *\n * In specific situations, it might be necessary to disable sanitization, for example if the\n * application genuinely needs to produce a `javascript:` style link with a dynamic value in it.\n * Users can bypass security by constructing a value with one of the `bypassSecurityTrust...`\n * methods, and then binding to that value from the template.\n *\n * These situations should be very rare, and extraordinary care must be taken to avoid creating a\n * Cross Site Scripting (XSS) security bug!\n *\n * When using `bypassSecurityTrust...`, make sure to call the method as early as possible and as\n * close as possible to the source of the value, to make it easy to verify no security bug is\n * created by its use.\n *\n * It is not required (and not recommended) to bypass security if the value is safe, e.g. a URL that\n * does not start with a suspicious protocol, or an HTML snippet that does not contain dangerous\n * code. The sanitizer leaves safe values intact.\n *\n * @security Calling any of the `bypassSecurityTrust...` APIs disables Angular's built-in\n * sanitization for the value passed in. Carefully check and audit all values and code paths going\n * into this call. Make sure any user data is appropriately escaped for this security context.\n * For more detail, see the [Security Guide](https://g.co/ng/security).\n *\n * @publicApi\n */\nclass DomSanitizer {\n}\nDomSanitizer.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DomSanitizer, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nDomSanitizer.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DomSanitizer, providedIn: 'root', useExisting: i0.forwardRef(function () { return DomSanitizerImpl; }) });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DomSanitizer, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root', useExisting: forwardRef(() => DomSanitizerImpl) }]\n        }] });\nfunction domSanitizerImplFactory(injector) {\n    return new DomSanitizerImpl(injector.get(DOCUMENT));\n}\nclass DomSanitizerImpl extends DomSanitizer {\n    constructor(_doc) {\n        super();\n        this._doc = _doc;\n    }\n    sanitize(ctx, value) {\n        if (value == null)\n            return null;\n        switch (ctx) {\n            case SecurityContext.NONE:\n                return value;\n            case SecurityContext.HTML:\n                if (ɵallowSanitizationBypassAndThrow(value, \"HTML\" /* BypassType.Html */)) {\n                    return ɵunwrapSafeValue(value);\n                }\n                return ɵ_sanitizeHtml(this._doc, String(value)).toString();\n            case SecurityContext.STYLE:\n                if (ɵallowSanitizationBypassAndThrow(value, \"Style\" /* BypassType.Style */)) {\n                    return ɵunwrapSafeValue(value);\n                }\n                return value;\n            case SecurityContext.SCRIPT:\n                if (ɵallowSanitizationBypassAndThrow(value, \"Script\" /* BypassType.Script */)) {\n                    return ɵunwrapSafeValue(value);\n                }\n                throw new Error('unsafe value used in a script context');\n            case SecurityContext.URL:\n                if (ɵallowSanitizationBypassAndThrow(value, \"URL\" /* BypassType.Url */)) {\n                    return ɵunwrapSafeValue(value);\n                }\n                return ɵ_sanitizeUrl(String(value));\n            case SecurityContext.RESOURCE_URL:\n                if (ɵallowSanitizationBypassAndThrow(value, \"ResourceURL\" /* BypassType.ResourceUrl */)) {\n                    return ɵunwrapSafeValue(value);\n                }\n                throw new Error(`unsafe value used in a resource URL context (see ${ɵXSS_SECURITY_URL})`);\n            default:\n                throw new Error(`Unexpected SecurityContext ${ctx} (see ${ɵXSS_SECURITY_URL})`);\n        }\n    }\n    bypassSecurityTrustHtml(value) {\n        return ɵbypassSanitizationTrustHtml(value);\n    }\n    bypassSecurityTrustStyle(value) {\n        return ɵbypassSanitizationTrustStyle(value);\n    }\n    bypassSecurityTrustScript(value) {\n        return ɵbypassSanitizationTrustScript(value);\n    }\n    bypassSecurityTrustUrl(value) {\n        return ɵbypassSanitizationTrustUrl(value);\n    }\n    bypassSecurityTrustResourceUrl(value) {\n        return ɵbypassSanitizationTrustResourceUrl(value);\n    }\n}\nDomSanitizerImpl.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DomSanitizerImpl, deps: [{ token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable });\nDomSanitizerImpl.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DomSanitizerImpl, providedIn: 'root', useFactory: domSanitizerImplFactory, deps: [{ token: Injector }] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DomSanitizerImpl, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root', useFactory: domSanitizerImplFactory, deps: [Injector] }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }]; } });\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of the platform-browser package.\n */\n/**\n * @publicApi\n */\nconst VERSION = new Version('15.2.9');\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of this package.\n */\n// This file only reexports content of the `src` folder. Keep it that way.\n\n// This file is not used to build this module. It is only used during editing\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { BrowserModule, BrowserTransferStateModule, By, DomSanitizer, EVENT_MANAGER_PLUGINS, EventManager, HAMMER_GESTURE_CONFIG, HAMMER_LOADER, HammerGestureConfig, HammerModule, Meta, REMOVE_STYLES_ON_COMPONENT_DESTROY, Title, TransferState, VERSION, bootstrapApplication, createApplication, disableDebugTools, enableDebugTools, makeStateKey, platformBrowser, provideProtractorTestingSupport, BrowserDomAdapter as ɵBrowserDomAdapter, BrowserGetTestability as ɵBrowserGetTestability, DomEventsPlugin as ɵDomEventsPlugin, DomRendererFactory2 as ɵDomRendererFactory2, DomSanitizerImpl as ɵDomSanitizerImpl, DomSharedStylesHost as ɵDomSharedStylesHost, HammerGesturesPlugin as ɵHammerGesturesPlugin, INTERNAL_BROWSER_PLATFORM_PROVIDERS as ɵINTERNAL_BROWSER_PLATFORM_PROVIDERS, KeyEventsPlugin as ɵKeyEventsPlugin, NAMESPACE_URIS as ɵNAMESPACE_URIS, SharedStylesHost as ɵSharedStylesHost, TRANSITION_ID as ɵTRANSITION_ID, escapeHtml as ɵescapeHtml, flattenStyles as ɵflattenStyles, initDomAdapter as ɵinitDomAdapter, shimContentAttribute as ɵshimContentAttribute, shimHostAttribute as ɵshimHostAttribute };\n","import { Observable } from '../Observable';\nimport { from } from './from';\nimport { empty } from './empty';\nexport function defer(observableFactory) {\n    return new Observable(subscriber => {\n        let input;\n        try {\n            input = observableFactory();\n        }\n        catch (err) {\n            subscriber.error(err);\n            return undefined;\n        }\n        const source = input ? from(input) : empty();\n        return source.subscribe(subscriber);\n    });\n}\n","import { Subscriber } from '../Subscriber';\nexport function scan(accumulator, seed) {\n    let hasSeed = false;\n    if (arguments.length >= 2) {\n        hasSeed = true;\n    }\n    return function scanOperatorFunction(source) {\n        return source.lift(new ScanOperator(accumulator, seed, hasSeed));\n    };\n}\nclass ScanOperator {\n    constructor(accumulator, seed, hasSeed = false) {\n        this.accumulator = accumulator;\n        this.seed = seed;\n        this.hasSeed = hasSeed;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new ScanSubscriber(subscriber, this.accumulator, this.seed, this.hasSeed));\n    }\n}\nclass ScanSubscriber extends Subscriber {\n    constructor(destination, accumulator, _seed, hasSeed) {\n        super(destination);\n        this.accumulator = accumulator;\n        this._seed = _seed;\n        this.hasSeed = hasSeed;\n        this.index = 0;\n    }\n    get seed() {\n        return this._seed;\n    }\n    set seed(value) {\n        this.hasSeed = true;\n        this._seed = value;\n    }\n    _next(value) {\n        if (!this.hasSeed) {\n            this.seed = value;\n            this.destination.next(value);\n        }\n        else {\n            return this._tryNext(value);\n        }\n    }\n    _tryNext(value) {\n        const index = this.index++;\n        let result;\n        try {\n            result = this.accumulator(this.seed, value, index);\n        }\n        catch (err) {\n            this.destination.error(err);\n        }\n        this.seed = result;\n        this.destination.next(result);\n    }\n}\n","import { Subscriber } from '../Subscriber';\nimport { ArgumentOutOfRangeError } from '../util/ArgumentOutOfRangeError';\nimport { empty } from '../observable/empty';\nexport function takeLast(count) {\n    return function takeLastOperatorFunction(source) {\n        if (count === 0) {\n            return empty();\n        }\n        else {\n            return source.lift(new TakeLastOperator(count));\n        }\n    };\n}\nclass TakeLastOperator {\n    constructor(total) {\n        this.total = total;\n        if (this.total < 0) {\n            throw new ArgumentOutOfRangeError;\n        }\n    }\n    call(subscriber, source) {\n        return source.subscribe(new TakeLastSubscriber(subscriber, this.total));\n    }\n}\nclass TakeLastSubscriber extends Subscriber {\n    constructor(destination, total) {\n        super(destination);\n        this.total = total;\n        this.ring = new Array();\n        this.count = 0;\n    }\n    _next(value) {\n        const ring = this.ring;\n        const total = this.total;\n        const count = this.count++;\n        if (ring.length < total) {\n            ring.push(value);\n        }\n        else {\n            const index = count % total;\n            ring[index] = value;\n        }\n    }\n    _complete() {\n        const destination = this.destination;\n        let count = this.count;\n        if (count > 0) {\n            const total = this.count >= this.total ? this.total : this.count;\n            const ring = this.ring;\n            for (let i = 0; i < total; i++) {\n                const idx = (count++) % total;\n                destination.next(ring[idx]);\n            }\n        }\n        destination.complete();\n    }\n}\n","import { EmptyError } from '../util/EmptyError';\nimport { filter } from './filter';\nimport { takeLast } from './takeLast';\nimport { throwIfEmpty } from './throwIfEmpty';\nimport { defaultIfEmpty } from './defaultIfEmpty';\nimport { identity } from '../util/identity';\nexport function last(predicate, defaultValue) {\n    const hasDefaultValue = arguments.length >= 2;\n    return (source) => source.pipe(predicate ? filter((v, i) => predicate(v, i, source)) : identity, takeLast(1), hasDefaultValue ? defaultIfEmpty(defaultValue) : throwIfEmpty(() => new EmptyError()));\n}\n","import { Subscriber } from '../Subscriber';\nexport function takeWhile(predicate, inclusive = false) {\n    return (source) => source.lift(new TakeWhileOperator(predicate, inclusive));\n}\nclass TakeWhileOperator {\n    constructor(predicate, inclusive) {\n        this.predicate = predicate;\n        this.inclusive = inclusive;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new TakeWhileSubscriber(subscriber, this.predicate, this.inclusive));\n    }\n}\nclass TakeWhileSubscriber extends Subscriber {\n    constructor(destination, predicate, inclusive) {\n        super(destination);\n        this.predicate = predicate;\n        this.inclusive = inclusive;\n        this.index = 0;\n    }\n    _next(value) {\n        const destination = this.destination;\n        let result;\n        try {\n            result = this.predicate(value, this.index++);\n        }\n        catch (err) {\n            destination.error(err);\n            return;\n        }\n        this.nextOrComplete(value, result);\n    }\n    nextOrComplete(value, predicateResult) {\n        const destination = this.destination;\n        if (Boolean(predicateResult)) {\n            destination.next(value);\n        }\n        else {\n            if (this.inclusive) {\n                destination.next(value);\n            }\n            destination.complete();\n        }\n    }\n}\n","import { Subscriber } from '../Subscriber';\nexport function mapTo(value) {\n    return (source) => source.lift(new MapToOperator(value));\n}\nclass MapToOperator {\n    constructor(value) {\n        this.value = value;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new MapToSubscriber(subscriber, this.value));\n    }\n}\nclass MapToSubscriber extends Subscriber {\n    constructor(destination, value) {\n        super(destination);\n        this.value = value;\n    }\n    _next(x) {\n        this.destination.next(this.value);\n    }\n}\n","import { Subscriber } from '../Subscriber';\nimport { Subscription } from '../Subscription';\nexport function finalize(callback) {\n    return (source) => source.lift(new FinallyOperator(callback));\n}\nclass FinallyOperator {\n    constructor(callback) {\n        this.callback = callback;\n    }\n    call(subscriber, source) {\n        return source.subscribe(new FinallySubscriber(subscriber, this.callback));\n    }\n}\nclass FinallySubscriber extends Subscriber {\n    constructor(destination, callback) {\n        super(destination);\n        this.add(new Subscription(callback));\n    }\n}\n","/**\n * @license Angular v15.2.9\n * (c) 2010-2022 Google LLC. https://angular.io/\n * License: MIT\n */\n\nimport * as i0 from '@angular/core';\nimport { ɵisObservable, ɵisPromise, ɵRuntimeError, Injectable, EventEmitter, inject, ViewContainerRef, ChangeDetectorRef, EnvironmentInjector, Directive, Input, Output, Component, createEnvironmentInjector, ɵisNgModule, isStandalone, ComponentFactoryResolver, ɵisInjectable, InjectionToken, Compiler, InjectFlags, NgModuleFactory, ɵConsole, NgZone, ɵcoerceToBoolean, ɵɵsanitizeUrlOrResourceUrl, Attribute, HostBinding, HostListener, Optional, ContentChildren, makeEnvironmentProviders, APP_BOOTSTRAP_LISTENER, ENVIRONMENT_INITIALIZER, Injector, ApplicationRef, APP_INITIALIZER, NgProbeToken, SkipSelf, NgModule, Inject, Version } from '@angular/core';\nimport { from, of, BehaviorSubject, EmptyError, combineLatest, concat, defer, pipe, throwError, Observable, EMPTY, ConnectableObservable, Subject } from 'rxjs';\nimport * as i3 from '@angular/common';\nimport { Location, ViewportScroller, LOCATION_INITIALIZED, LocationStrategy, HashLocationStrategy, PathLocationStrategy } from '@angular/common';\nimport { map, switchMap, take, startWith, filter, mergeMap, first, concatMap, tap, catchError, scan, last as last$1, takeWhile, defaultIfEmpty, takeLast, mapTo, finalize, refCount, mergeAll } from 'rxjs/operators';\nimport * as i1 from '@angular/platform-browser';\n\n/**\n * The primary routing outlet.\n *\n * @publicApi\n */\nconst PRIMARY_OUTLET = 'primary';\n/**\n * A private symbol used to store the value of `Route.title` inside the `Route.data` if it is a\n * static string or `Route.resolve` if anything else. This allows us to reuse the existing route\n * data/resolvers to support the title feature without new instrumentation in the `Router` pipeline.\n */\nconst RouteTitleKey = Symbol('RouteTitle');\nclass ParamsAsMap {\n    constructor(params) {\n        this.params = params || {};\n    }\n    has(name) {\n        return Object.prototype.hasOwnProperty.call(this.params, name);\n    }\n    get(name) {\n        if (this.has(name)) {\n            const v = this.params[name];\n            return Array.isArray(v) ? v[0] : v;\n        }\n        return null;\n    }\n    getAll(name) {\n        if (this.has(name)) {\n            const v = this.params[name];\n            return Array.isArray(v) ? v : [v];\n        }\n        return [];\n    }\n    get keys() {\n        return Object.keys(this.params);\n    }\n}\n/**\n * Converts a `Params` instance to a `ParamMap`.\n * @param params The instance to convert.\n * @returns The new map instance.\n *\n * @publicApi\n */\nfunction convertToParamMap(params) {\n    return new ParamsAsMap(params);\n}\n/**\n * Matches the route configuration (`route`) against the actual URL (`segments`).\n *\n * When no matcher is defined on a `Route`, this is the matcher used by the Router by default.\n *\n * @param segments The remaining unmatched segments in the current navigation\n * @param segmentGroup The current segment group being matched\n * @param route The `Route` to match against.\n *\n * @see UrlMatchResult\n * @see Route\n *\n * @returns The resulting match information or `null` if the `route` should not match.\n * @publicApi\n */\nfunction defaultUrlMatcher(segments, segmentGroup, route) {\n    const parts = route.path.split('/');\n    if (parts.length > segments.length) {\n        // The actual URL is shorter than the config, no match\n        return null;\n    }\n    if (route.pathMatch === 'full' &&\n        (segmentGroup.hasChildren() || parts.length < segments.length)) {\n        // The config is longer than the actual URL but we are looking for a full match, return null\n        return null;\n    }\n    const posParams = {};\n    // Check each config part against the actual URL\n    for (let index = 0; index < parts.length; index++) {\n        const part = parts[index];\n        const segment = segments[index];\n        const isParameter = part.startsWith(':');\n        if (isParameter) {\n            posParams[part.substring(1)] = segment;\n        }\n        else if (part !== segment.path) {\n            // The actual URL part does not match the config, no match\n            return null;\n        }\n    }\n    return { consumed: segments.slice(0, parts.length), posParams };\n}\n\nfunction shallowEqualArrays(a, b) {\n    if (a.length !== b.length)\n        return false;\n    for (let i = 0; i < a.length; ++i) {\n        if (!shallowEqual(a[i], b[i]))\n            return false;\n    }\n    return true;\n}\nfunction shallowEqual(a, b) {\n    // While `undefined` should never be possible, it would sometimes be the case in IE 11\n    // and pre-chromium Edge. The check below accounts for this edge case.\n    const k1 = a ? Object.keys(a) : undefined;\n    const k2 = b ? Object.keys(b) : undefined;\n    if (!k1 || !k2 || k1.length != k2.length) {\n        return false;\n    }\n    let key;\n    for (let i = 0; i < k1.length; i++) {\n        key = k1[i];\n        if (!equalArraysOrString(a[key], b[key])) {\n            return false;\n        }\n    }\n    return true;\n}\n/**\n * Test equality for arrays of strings or a string.\n */\nfunction equalArraysOrString(a, b) {\n    if (Array.isArray(a) && Array.isArray(b)) {\n        if (a.length !== b.length)\n            return false;\n        const aSorted = [...a].sort();\n        const bSorted = [...b].sort();\n        return aSorted.every((val, index) => bSorted[index] === val);\n    }\n    else {\n        return a === b;\n    }\n}\n/**\n * Flattens single-level nested arrays.\n */\nfunction flatten(arr) {\n    return Array.prototype.concat.apply([], arr);\n}\n/**\n * Return the last element of an array.\n */\nfunction last(a) {\n    return a.length > 0 ? a[a.length - 1] : null;\n}\n/**\n * Verifys all booleans in an array are `true`.\n */\nfunction and(bools) {\n    return !bools.some(v => !v);\n}\nfunction forEach(map, callback) {\n    for (const prop in map) {\n        if (map.hasOwnProperty(prop)) {\n            callback(map[prop], prop);\n        }\n    }\n}\nfunction wrapIntoObservable(value) {\n    if (ɵisObservable(value)) {\n        return value;\n    }\n    if (ɵisPromise(value)) {\n        // Use `Promise.resolve()` to wrap promise-like instances.\n        // Required ie when a Resolver returns a AngularJS `$q` promise to correctly trigger the\n        // change detection.\n        return from(Promise.resolve(value));\n    }\n    return of(value);\n}\n\nconst NG_DEV_MODE$b = typeof ngDevMode === 'undefined' || ngDevMode;\nconst pathCompareMap = {\n    'exact': equalSegmentGroups,\n    'subset': containsSegmentGroup,\n};\nconst paramCompareMap = {\n    'exact': equalParams,\n    'subset': containsParams,\n    'ignored': () => true,\n};\nfunction containsTree(container, containee, options) {\n    return pathCompareMap[options.paths](container.root, containee.root, options.matrixParams) &&\n        paramCompareMap[options.queryParams](container.queryParams, containee.queryParams) &&\n        !(options.fragment === 'exact' && container.fragment !== containee.fragment);\n}\nfunction equalParams(container, containee) {\n    // TODO: This does not handle array params correctly.\n    return shallowEqual(container, containee);\n}\nfunction equalSegmentGroups(container, containee, matrixParams) {\n    if (!equalPath(container.segments, containee.segments))\n        return false;\n    if (!matrixParamsMatch(container.segments, containee.segments, matrixParams)) {\n        return false;\n    }\n    if (container.numberOfChildren !== containee.numberOfChildren)\n        return false;\n    for (const c in containee.children) {\n        if (!container.children[c])\n            return false;\n        if (!equalSegmentGroups(container.children[c], containee.children[c], matrixParams))\n            return false;\n    }\n    return true;\n}\nfunction containsParams(container, containee) {\n    return Object.keys(containee).length <= Object.keys(container).length &&\n        Object.keys(containee).every(key => equalArraysOrString(container[key], containee[key]));\n}\nfunction containsSegmentGroup(container, containee, matrixParams) {\n    return containsSegmentGroupHelper(container, containee, containee.segments, matrixParams);\n}\nfunction containsSegmentGroupHelper(container, containee, containeePaths, matrixParams) {\n    if (container.segments.length > containeePaths.length) {\n        const current = container.segments.slice(0, containeePaths.length);\n        if (!equalPath(current, containeePaths))\n            return false;\n        if (containee.hasChildren())\n            return false;\n        if (!matrixParamsMatch(current, containeePaths, matrixParams))\n            return false;\n        return true;\n    }\n    else if (container.segments.length === containeePaths.length) {\n        if (!equalPath(container.segments, containeePaths))\n            return false;\n        if (!matrixParamsMatch(container.segments, containeePaths, matrixParams))\n            return false;\n        for (const c in containee.children) {\n            if (!container.children[c])\n                return false;\n            if (!containsSegmentGroup(container.children[c], containee.children[c], matrixParams)) {\n                return false;\n            }\n        }\n        return true;\n    }\n    else {\n        const current = containeePaths.slice(0, container.segments.length);\n        const next = containeePaths.slice(container.segments.length);\n        if (!equalPath(container.segments, current))\n            return false;\n        if (!matrixParamsMatch(container.segments, current, matrixParams))\n            return false;\n        if (!container.children[PRIMARY_OUTLET])\n            return false;\n        return containsSegmentGroupHelper(container.children[PRIMARY_OUTLET], containee, next, matrixParams);\n    }\n}\nfunction matrixParamsMatch(containerPaths, containeePaths, options) {\n    return containeePaths.every((containeeSegment, i) => {\n        return paramCompareMap[options](containerPaths[i].parameters, containeeSegment.parameters);\n    });\n}\n/**\n * @description\n *\n * Represents the parsed URL.\n *\n * Since a router state is a tree, and the URL is nothing but a serialized state, the URL is a\n * serialized tree.\n * UrlTree is a data structure that provides a lot of affordances in dealing with URLs\n *\n * @usageNotes\n * ### Example\n *\n * ```\n * @Component({templateUrl:'template.html'})\n * class MyComponent {\n *   constructor(router: Router) {\n *     const tree: UrlTree =\n *       router.parseUrl('/team/33/(user/victor//support:help)?debug=true#fragment');\n *     const f = tree.fragment; // return 'fragment'\n *     const q = tree.queryParams; // returns {debug: 'true'}\n *     const g: UrlSegmentGroup = tree.root.children[PRIMARY_OUTLET];\n *     const s: UrlSegment[] = g.segments; // returns 2 segments 'team' and '33'\n *     g.children[PRIMARY_OUTLET].segments; // returns 2 segments 'user' and 'victor'\n *     g.children['support'].segments; // return 1 segment 'help'\n *   }\n * }\n * ```\n *\n * @publicApi\n */\nclass UrlTree {\n    constructor(\n    /** The root segment group of the URL tree */\n    root = new UrlSegmentGroup([], {}), \n    /** The query params of the URL */\n    queryParams = {}, \n    /** The fragment of the URL */\n    fragment = null) {\n        this.root = root;\n        this.queryParams = queryParams;\n        this.fragment = fragment;\n        if (NG_DEV_MODE$b) {\n            if (root.segments.length > 0) {\n                throw new ɵRuntimeError(4015 /* RuntimeErrorCode.INVALID_ROOT_URL_SEGMENT */, 'The root `UrlSegmentGroup` should not contain `segments`. ' +\n                    'Instead, these segments belong in the `children` so they can be associated with a named outlet.');\n            }\n        }\n    }\n    get queryParamMap() {\n        if (!this._queryParamMap) {\n            this._queryParamMap = convertToParamMap(this.queryParams);\n        }\n        return this._queryParamMap;\n    }\n    /** @docsNotRequired */\n    toString() {\n        return DEFAULT_SERIALIZER.serialize(this);\n    }\n}\n/**\n * @description\n *\n * Represents the parsed URL segment group.\n *\n * See `UrlTree` for more information.\n *\n * @publicApi\n */\nclass UrlSegmentGroup {\n    constructor(\n    /** The URL segments of this group. See `UrlSegment` for more information */\n    segments, \n    /** The list of children of this group */\n    children) {\n        this.segments = segments;\n        this.children = children;\n        /** The parent node in the url tree */\n        this.parent = null;\n        forEach(children, (v, k) => v.parent = this);\n    }\n    /** Whether the segment has child segments */\n    hasChildren() {\n        return this.numberOfChildren > 0;\n    }\n    /** Number of child segments */\n    get numberOfChildren() {\n        return Object.keys(this.children).length;\n    }\n    /** @docsNotRequired */\n    toString() {\n        return serializePaths(this);\n    }\n}\n/**\n * @description\n *\n * Represents a single URL segment.\n *\n * A UrlSegment is a part of a URL between the two slashes. It contains a path and the matrix\n * parameters associated with the segment.\n *\n * @usageNotes\n * ### Example\n *\n * ```\n * @Component({templateUrl:'template.html'})\n * class MyComponent {\n *   constructor(router: Router) {\n *     const tree: UrlTree = router.parseUrl('/team;id=33');\n *     const g: UrlSegmentGroup = tree.root.children[PRIMARY_OUTLET];\n *     const s: UrlSegment[] = g.segments;\n *     s[0].path; // returns 'team'\n *     s[0].parameters; // returns {id: 33}\n *   }\n * }\n * ```\n *\n * @publicApi\n */\nclass UrlSegment {\n    constructor(\n    /** The path part of a URL segment */\n    path, \n    /** The matrix parameters associated with a segment */\n    parameters) {\n        this.path = path;\n        this.parameters = parameters;\n    }\n    get parameterMap() {\n        if (!this._parameterMap) {\n            this._parameterMap = convertToParamMap(this.parameters);\n        }\n        return this._parameterMap;\n    }\n    /** @docsNotRequired */\n    toString() {\n        return serializePath(this);\n    }\n}\nfunction equalSegments(as, bs) {\n    return equalPath(as, bs) && as.every((a, i) => shallowEqual(a.parameters, bs[i].parameters));\n}\nfunction equalPath(as, bs) {\n    if (as.length !== bs.length)\n        return false;\n    return as.every((a, i) => a.path === bs[i].path);\n}\nfunction mapChildrenIntoArray(segment, fn) {\n    let res = [];\n    forEach(segment.children, (child, childOutlet) => {\n        if (childOutlet === PRIMARY_OUTLET) {\n            res = res.concat(fn(child, childOutlet));\n        }\n    });\n    forEach(segment.children, (child, childOutlet) => {\n        if (childOutlet !== PRIMARY_OUTLET) {\n            res = res.concat(fn(child, childOutlet));\n        }\n    });\n    return res;\n}\n/**\n * @description\n *\n * Serializes and deserializes a URL string into a URL tree.\n *\n * The url serialization strategy is customizable. You can\n * make all URLs case insensitive by providing a custom UrlSerializer.\n *\n * See `DefaultUrlSerializer` for an example of a URL serializer.\n *\n * @publicApi\n */\nclass UrlSerializer {\n}\nUrlSerializer.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: UrlSerializer, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nUrlSerializer.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: UrlSerializer, providedIn: 'root', useFactory: () => new DefaultUrlSerializer() });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: UrlSerializer, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root', useFactory: () => new DefaultUrlSerializer() }]\n        }] });\n/**\n * @description\n *\n * A default implementation of the `UrlSerializer`.\n *\n * Example URLs:\n *\n * ```\n * /inbox/33(popup:compose)\n * /inbox/33;open=true/messages/44\n * ```\n *\n * DefaultUrlSerializer uses parentheses to serialize secondary segments (e.g., popup:compose), the\n * colon syntax to specify the outlet, and the ';parameter=value' syntax (e.g., open=true) to\n * specify route specific parameters.\n *\n * @publicApi\n */\nclass DefaultUrlSerializer {\n    /** Parses a url into a `UrlTree` */\n    parse(url) {\n        const p = new UrlParser(url);\n        return new UrlTree(p.parseRootSegment(), p.parseQueryParams(), p.parseFragment());\n    }\n    /** Converts a `UrlTree` into a url */\n    serialize(tree) {\n        const segment = `/${serializeSegment(tree.root, true)}`;\n        const query = serializeQueryParams(tree.queryParams);\n        const fragment = typeof tree.fragment === `string` ? `#${encodeUriFragment(tree.fragment)}` : '';\n        return `${segment}${query}${fragment}`;\n    }\n}\nconst DEFAULT_SERIALIZER = new DefaultUrlSerializer();\nfunction serializePaths(segment) {\n    return segment.segments.map(p => serializePath(p)).join('/');\n}\nfunction serializeSegment(segment, root) {\n    if (!segment.hasChildren()) {\n        return serializePaths(segment);\n    }\n    if (root) {\n        const primary = segment.children[PRIMARY_OUTLET] ?\n            serializeSegment(segment.children[PRIMARY_OUTLET], false) :\n            '';\n        const children = [];\n        forEach(segment.children, (v, k) => {\n            if (k !== PRIMARY_OUTLET) {\n                children.push(`${k}:${serializeSegment(v, false)}`);\n            }\n        });\n        return children.length > 0 ? `${primary}(${children.join('//')})` : primary;\n    }\n    else {\n        const children = mapChildrenIntoArray(segment, (v, k) => {\n            if (k === PRIMARY_OUTLET) {\n                return [serializeSegment(segment.children[PRIMARY_OUTLET], false)];\n            }\n            return [`${k}:${serializeSegment(v, false)}`];\n        });\n        // use no parenthesis if the only child is a primary outlet route\n        if (Object.keys(segment.children).length === 1 && segment.children[PRIMARY_OUTLET] != null) {\n            return `${serializePaths(segment)}/${children[0]}`;\n        }\n        return `${serializePaths(segment)}/(${children.join('//')})`;\n    }\n}\n/**\n * Encodes a URI string with the default encoding. This function will only ever be called from\n * `encodeUriQuery` or `encodeUriSegment` as it's the base set of encodings to be used. We need\n * a custom encoding because encodeURIComponent is too aggressive and encodes stuff that doesn't\n * have to be encoded per https://url.spec.whatwg.org.\n */\nfunction encodeUriString(s) {\n    return encodeURIComponent(s)\n        .replace(/%40/g, '@')\n        .replace(/%3A/gi, ':')\n        .replace(/%24/g, '$')\n        .replace(/%2C/gi, ',');\n}\n/**\n * This function should be used to encode both keys and values in a query string key/value. In\n * the following URL, you need to call encodeUriQuery on \"k\" and \"v\":\n *\n * http://www.site.org/html;mk=mv?k=v#f\n */\nfunction encodeUriQuery(s) {\n    return encodeUriString(s).replace(/%3B/gi, ';');\n}\n/**\n * This function should be used to encode a URL fragment. In the following URL, you need to call\n * encodeUriFragment on \"f\":\n *\n * http://www.site.org/html;mk=mv?k=v#f\n */\nfunction encodeUriFragment(s) {\n    return encodeURI(s);\n}\n/**\n * This function should be run on any URI segment as well as the key and value in a key/value\n * pair for matrix params. In the following URL, you need to call encodeUriSegment on \"html\",\n * \"mk\", and \"mv\":\n *\n * http://www.site.org/html;mk=mv?k=v#f\n */\nfunction encodeUriSegment(s) {\n    return encodeUriString(s).replace(/\\(/g, '%28').replace(/\\)/g, '%29').replace(/%26/gi, '&');\n}\nfunction decode(s) {\n    return decodeURIComponent(s);\n}\n// Query keys/values should have the \"+\" replaced first, as \"+\" in a query string is \" \".\n// decodeURIComponent function will not decode \"+\" as a space.\nfunction decodeQuery(s) {\n    return decode(s.replace(/\\+/g, '%20'));\n}\nfunction serializePath(path) {\n    return `${encodeUriSegment(path.path)}${serializeMatrixParams(path.parameters)}`;\n}\nfunction serializeMatrixParams(params) {\n    return Object.keys(params)\n        .map(key => `;${encodeUriSegment(key)}=${encodeUriSegment(params[key])}`)\n        .join('');\n}\nfunction serializeQueryParams(params) {\n    const strParams = Object.keys(params)\n        .map((name) => {\n        const value = params[name];\n        return Array.isArray(value) ?\n            value.map(v => `${encodeUriQuery(name)}=${encodeUriQuery(v)}`).join('&') :\n            `${encodeUriQuery(name)}=${encodeUriQuery(value)}`;\n    })\n        .filter(s => !!s);\n    return strParams.length ? `?${strParams.join('&')}` : '';\n}\nconst SEGMENT_RE = /^[^\\/()?;=#]+/;\nfunction matchSegments(str) {\n    const match = str.match(SEGMENT_RE);\n    return match ? match[0] : '';\n}\nconst QUERY_PARAM_RE = /^[^=?&#]+/;\n// Return the name of the query param at the start of the string or an empty string\nfunction matchQueryParams(str) {\n    const match = str.match(QUERY_PARAM_RE);\n    return match ? match[0] : '';\n}\nconst QUERY_PARAM_VALUE_RE = /^[^&#]+/;\n// Return the value of the query param at the start of the string or an empty string\nfunction matchUrlQueryParamValue(str) {\n    const match = str.match(QUERY_PARAM_VALUE_RE);\n    return match ? match[0] : '';\n}\nclass UrlParser {\n    constructor(url) {\n        this.url = url;\n        this.remaining = url;\n    }\n    parseRootSegment() {\n        this.consumeOptional('/');\n        if (this.remaining === '' || this.peekStartsWith('?') || this.peekStartsWith('#')) {\n            return new UrlSegmentGroup([], {});\n        }\n        // The root segment group never has segments\n        return new UrlSegmentGroup([], this.parseChildren());\n    }\n    parseQueryParams() {\n        const params = {};\n        if (this.consumeOptional('?')) {\n            do {\n                this.parseQueryParam(params);\n            } while (this.consumeOptional('&'));\n        }\n        return params;\n    }\n    parseFragment() {\n        return this.consumeOptional('#') ? decodeURIComponent(this.remaining) : null;\n    }\n    parseChildren() {\n        if (this.remaining === '') {\n            return {};\n        }\n        this.consumeOptional('/');\n        const segments = [];\n        if (!this.peekStartsWith('(')) {\n            segments.push(this.parseSegment());\n        }\n        while (this.peekStartsWith('/') && !this.peekStartsWith('//') && !this.peekStartsWith('/(')) {\n            this.capture('/');\n            segments.push(this.parseSegment());\n        }\n        let children = {};\n        if (this.peekStartsWith('/(')) {\n            this.capture('/');\n            children = this.parseParens(true);\n        }\n        let res = {};\n        if (this.peekStartsWith('(')) {\n            res = this.parseParens(false);\n        }\n        if (segments.length > 0 || Object.keys(children).length > 0) {\n            res[PRIMARY_OUTLET] = new UrlSegmentGroup(segments, children);\n        }\n        return res;\n    }\n    // parse a segment with its matrix parameters\n    // ie `name;k1=v1;k2`\n    parseSegment() {\n        const path = matchSegments(this.remaining);\n        if (path === '' && this.peekStartsWith(';')) {\n            throw new ɵRuntimeError(4009 /* RuntimeErrorCode.EMPTY_PATH_WITH_PARAMS */, NG_DEV_MODE$b && `Empty path url segment cannot have parameters: '${this.remaining}'.`);\n        }\n        this.capture(path);\n        return new UrlSegment(decode(path), this.parseMatrixParams());\n    }\n    parseMatrixParams() {\n        const params = {};\n        while (this.consumeOptional(';')) {\n            this.parseParam(params);\n        }\n        return params;\n    }\n    parseParam(params) {\n        const key = matchSegments(this.remaining);\n        if (!key) {\n            return;\n        }\n        this.capture(key);\n        let value = '';\n        if (this.consumeOptional('=')) {\n            const valueMatch = matchSegments(this.remaining);\n            if (valueMatch) {\n                value = valueMatch;\n                this.capture(value);\n            }\n        }\n        params[decode(key)] = decode(value);\n    }\n    // Parse a single query parameter `name[=value]`\n    parseQueryParam(params) {\n        const key = matchQueryParams(this.remaining);\n        if (!key) {\n            return;\n        }\n        this.capture(key);\n        let value = '';\n        if (this.consumeOptional('=')) {\n            const valueMatch = matchUrlQueryParamValue(this.remaining);\n            if (valueMatch) {\n                value = valueMatch;\n                this.capture(value);\n            }\n        }\n        const decodedKey = decodeQuery(key);\n        const decodedVal = decodeQuery(value);\n        if (params.hasOwnProperty(decodedKey)) {\n            // Append to existing values\n            let currentVal = params[decodedKey];\n            if (!Array.isArray(currentVal)) {\n                currentVal = [currentVal];\n                params[decodedKey] = currentVal;\n            }\n            currentVal.push(decodedVal);\n        }\n        else {\n            // Create a new value\n            params[decodedKey] = decodedVal;\n        }\n    }\n    // parse `(a/b//outlet_name:c/d)`\n    parseParens(allowPrimary) {\n        const segments = {};\n        this.capture('(');\n        while (!this.consumeOptional(')') && this.remaining.length > 0) {\n            const path = matchSegments(this.remaining);\n            const next = this.remaining[path.length];\n            // if is is not one of these characters, then the segment was unescaped\n            // or the group was not closed\n            if (next !== '/' && next !== ')' && next !== ';') {\n                throw new ɵRuntimeError(4010 /* RuntimeErrorCode.UNPARSABLE_URL */, NG_DEV_MODE$b && `Cannot parse url '${this.url}'`);\n            }\n            let outletName = undefined;\n            if (path.indexOf(':') > -1) {\n                outletName = path.slice(0, path.indexOf(':'));\n                this.capture(outletName);\n                this.capture(':');\n            }\n            else if (allowPrimary) {\n                outletName = PRIMARY_OUTLET;\n            }\n            const children = this.parseChildren();\n            segments[outletName] = Object.keys(children).length === 1 ? children[PRIMARY_OUTLET] :\n                new UrlSegmentGroup([], children);\n            this.consumeOptional('//');\n        }\n        return segments;\n    }\n    peekStartsWith(str) {\n        return this.remaining.startsWith(str);\n    }\n    // Consumes the prefix when it is present and returns whether it has been consumed\n    consumeOptional(str) {\n        if (this.peekStartsWith(str)) {\n            this.remaining = this.remaining.substring(str.length);\n            return true;\n        }\n        return false;\n    }\n    capture(str) {\n        if (!this.consumeOptional(str)) {\n            throw new ɵRuntimeError(4011 /* RuntimeErrorCode.UNEXPECTED_VALUE_IN_URL */, NG_DEV_MODE$b && `Expected \"${str}\".`);\n        }\n    }\n}\nfunction createRoot(rootCandidate) {\n    return rootCandidate.segments.length > 0 ?\n        new UrlSegmentGroup([], { [PRIMARY_OUTLET]: rootCandidate }) :\n        rootCandidate;\n}\n/**\n * Recursively merges primary segment children into their parents and also drops empty children\n * (those which have no segments and no children themselves). The latter prevents serializing a\n * group into something like `/a(aux:)`, where `aux` is an empty child segment.\n */\nfunction squashSegmentGroup(segmentGroup) {\n    const newChildren = {};\n    for (const childOutlet of Object.keys(segmentGroup.children)) {\n        const child = segmentGroup.children[childOutlet];\n        const childCandidate = squashSegmentGroup(child);\n        // don't add empty children\n        if (childCandidate.segments.length > 0 || childCandidate.hasChildren()) {\n            newChildren[childOutlet] = childCandidate;\n        }\n    }\n    const s = new UrlSegmentGroup(segmentGroup.segments, newChildren);\n    return mergeTrivialChildren(s);\n}\n/**\n * When possible, merges the primary outlet child into the parent `UrlSegmentGroup`.\n *\n * When a segment group has only one child which is a primary outlet, merges that child into the\n * parent. That is, the child segment group's segments are merged into the `s` and the child's\n * children become the children of `s`. Think of this like a 'squash', merging the child segment\n * group into the parent.\n */\nfunction mergeTrivialChildren(s) {\n    if (s.numberOfChildren === 1 && s.children[PRIMARY_OUTLET]) {\n        const c = s.children[PRIMARY_OUTLET];\n        return new UrlSegmentGroup(s.segments.concat(c.segments), c.children);\n    }\n    return s;\n}\nfunction isUrlTree(v) {\n    return v instanceof UrlTree;\n}\n\nconst NG_DEV_MODE$a = typeof ngDevMode === 'undefined' || ngDevMode;\n/**\n * Creates a `UrlTree` relative to an `ActivatedRouteSnapshot`.\n *\n * @publicApi\n *\n *\n * @param relativeTo The `ActivatedRouteSnapshot` to apply the commands to\n * @param commands An array of URL fragments with which to construct the new URL tree.\n * If the path is static, can be the literal URL string. For a dynamic path, pass an array of path\n * segments, followed by the parameters for each segment.\n * The fragments are applied to the one provided in the `relativeTo` parameter.\n * @param queryParams The query parameters for the `UrlTree`. `null` if the `UrlTree` does not have\n *     any query parameters.\n * @param fragment The fragment for the `UrlTree`. `null` if the `UrlTree` does not have a fragment.\n *\n * @usageNotes\n *\n * ```\n * // create /team/33/user/11\n * createUrlTreeFromSnapshot(snapshot, ['/team', 33, 'user', 11]);\n *\n * // create /team/33;expand=true/user/11\n * createUrlTreeFromSnapshot(snapshot, ['/team', 33, {expand: true}, 'user', 11]);\n *\n * // you can collapse static segments like this (this works only with the first passed-in value):\n * createUrlTreeFromSnapshot(snapshot, ['/team/33/user', userId]);\n *\n * // If the first segment can contain slashes, and you do not want the router to split it,\n * // you can do the following:\n * createUrlTreeFromSnapshot(snapshot, [{segmentPath: '/one/two'}]);\n *\n * // create /team/33/(user/11//right:chat)\n * createUrlTreeFromSnapshot(snapshot, ['/team', 33, {outlets: {primary: 'user/11', right:\n * 'chat'}}], null, null);\n *\n * // remove the right secondary node\n * createUrlTreeFromSnapshot(snapshot, ['/team', 33, {outlets: {primary: 'user/11', right: null}}]);\n *\n * // For the examples below, assume the current URL is for the `/team/33/user/11` and the\n * `ActivatedRouteSnapshot` points to `user/11`:\n *\n * // navigate to /team/33/user/11/details\n * createUrlTreeFromSnapshot(snapshot, ['details']);\n *\n * // navigate to /team/33/user/22\n * createUrlTreeFromSnapshot(snapshot, ['../22']);\n *\n * // navigate to /team/44/user/22\n * createUrlTreeFromSnapshot(snapshot, ['../../team/44/user/22']);\n * ```\n */\nfunction createUrlTreeFromSnapshot(relativeTo, commands, queryParams = null, fragment = null) {\n    const relativeToUrlSegmentGroup = createSegmentGroupFromRoute(relativeTo);\n    return createUrlTreeFromSegmentGroup(relativeToUrlSegmentGroup, commands, queryParams, fragment);\n}\nfunction createSegmentGroupFromRoute(route) {\n    let targetGroup;\n    function createSegmentGroupFromRouteRecursive(currentRoute) {\n        const childOutlets = {};\n        for (const childSnapshot of currentRoute.children) {\n            const root = createSegmentGroupFromRouteRecursive(childSnapshot);\n            childOutlets[childSnapshot.outlet] = root;\n        }\n        const segmentGroup = new UrlSegmentGroup(currentRoute.url, childOutlets);\n        if (currentRoute === route) {\n            targetGroup = segmentGroup;\n        }\n        return segmentGroup;\n    }\n    const rootCandidate = createSegmentGroupFromRouteRecursive(route.root);\n    const rootSegmentGroup = createRoot(rootCandidate);\n    return targetGroup ?? rootSegmentGroup;\n}\nfunction createUrlTreeFromSegmentGroup(relativeTo, commands, queryParams, fragment) {\n    let root = relativeTo;\n    while (root.parent) {\n        root = root.parent;\n    }\n    // There are no commands so the `UrlTree` goes to the same path as the one created from the\n    // `UrlSegmentGroup`. All we need to do is update the `queryParams` and `fragment` without\n    // applying any other logic.\n    if (commands.length === 0) {\n        return tree(root, root, root, queryParams, fragment);\n    }\n    const nav = computeNavigation(commands);\n    if (nav.toRoot()) {\n        return tree(root, root, new UrlSegmentGroup([], {}), queryParams, fragment);\n    }\n    const position = findStartingPositionForTargetGroup(nav, root, relativeTo);\n    const newSegmentGroup = position.processChildren ?\n        updateSegmentGroupChildren(position.segmentGroup, position.index, nav.commands) :\n        updateSegmentGroup(position.segmentGroup, position.index, nav.commands);\n    return tree(root, position.segmentGroup, newSegmentGroup, queryParams, fragment);\n}\nfunction createUrlTree(route, urlTree, commands, queryParams, fragment) {\n    if (commands.length === 0) {\n        return tree(urlTree.root, urlTree.root, urlTree.root, queryParams, fragment);\n    }\n    const nav = computeNavigation(commands);\n    if (nav.toRoot()) {\n        return tree(urlTree.root, urlTree.root, new UrlSegmentGroup([], {}), queryParams, fragment);\n    }\n    function createTreeUsingPathIndex(lastPathIndex) {\n        const startingPosition = findStartingPosition(nav, urlTree, route.snapshot?._urlSegment, lastPathIndex);\n        const segmentGroup = startingPosition.processChildren ?\n            updateSegmentGroupChildren(startingPosition.segmentGroup, startingPosition.index, nav.commands) :\n            updateSegmentGroup(startingPosition.segmentGroup, startingPosition.index, nav.commands);\n        return tree(urlTree.root, startingPosition.segmentGroup, segmentGroup, queryParams, fragment);\n    }\n    // Note: The types should disallow `snapshot` from being `undefined` but due to test mocks, this\n    // may be the case. Since we try to access it at an earlier point before the refactor to add the\n    // warning for `relativeLinkResolution: 'legacy'`, this may cause failures in tests where it\n    // didn't before.\n    const result = createTreeUsingPathIndex(route.snapshot?._lastPathIndex);\n    return result;\n}\nfunction isMatrixParams(command) {\n    return typeof command === 'object' && command != null && !command.outlets && !command.segmentPath;\n}\n/**\n * Determines if a given command has an `outlets` map. When we encounter a command\n * with an outlets k/v map, we need to apply each outlet individually to the existing segment.\n */\nfunction isCommandWithOutlets(command) {\n    return typeof command === 'object' && command != null && command.outlets;\n}\nfunction tree(oldRoot, oldSegmentGroup, newSegmentGroup, queryParams, fragment) {\n    let qp = {};\n    if (queryParams) {\n        forEach(queryParams, (value, name) => {\n            qp[name] = Array.isArray(value) ? value.map((v) => `${v}`) : `${value}`;\n        });\n    }\n    let rootCandidate;\n    if (oldRoot === oldSegmentGroup) {\n        rootCandidate = newSegmentGroup;\n    }\n    else {\n        rootCandidate = replaceSegment(oldRoot, oldSegmentGroup, newSegmentGroup);\n    }\n    const newRoot = createRoot(squashSegmentGroup(rootCandidate));\n    return new UrlTree(newRoot, qp, fragment);\n}\n/**\n * Replaces the `oldSegment` which is located in some child of the `current` with the `newSegment`.\n * This also has the effect of creating new `UrlSegmentGroup` copies to update references. This\n * shouldn't be necessary but the fallback logic for an invalid ActivatedRoute in the creation uses\n * the Router's current url tree. If we don't create new segment groups, we end up modifying that\n * value.\n */\nfunction replaceSegment(current, oldSegment, newSegment) {\n    const children = {};\n    forEach(current.children, (c, outletName) => {\n        if (c === oldSegment) {\n            children[outletName] = newSegment;\n        }\n        else {\n            children[outletName] = replaceSegment(c, oldSegment, newSegment);\n        }\n    });\n    return new UrlSegmentGroup(current.segments, children);\n}\nclass Navigation {\n    constructor(isAbsolute, numberOfDoubleDots, commands) {\n        this.isAbsolute = isAbsolute;\n        this.numberOfDoubleDots = numberOfDoubleDots;\n        this.commands = commands;\n        if (isAbsolute && commands.length > 0 && isMatrixParams(commands[0])) {\n            throw new ɵRuntimeError(4003 /* RuntimeErrorCode.ROOT_SEGMENT_MATRIX_PARAMS */, NG_DEV_MODE$a && 'Root segment cannot have matrix parameters');\n        }\n        const cmdWithOutlet = commands.find(isCommandWithOutlets);\n        if (cmdWithOutlet && cmdWithOutlet !== last(commands)) {\n            throw new ɵRuntimeError(4004 /* RuntimeErrorCode.MISPLACED_OUTLETS_COMMAND */, NG_DEV_MODE$a && '{outlets:{}} has to be the last command');\n        }\n    }\n    toRoot() {\n        return this.isAbsolute && this.commands.length === 1 && this.commands[0] == '/';\n    }\n}\n/** Transforms commands to a normalized `Navigation` */\nfunction computeNavigation(commands) {\n    if ((typeof commands[0] === 'string') && commands.length === 1 && commands[0] === '/') {\n        return new Navigation(true, 0, commands);\n    }\n    let numberOfDoubleDots = 0;\n    let isAbsolute = false;\n    const res = commands.reduce((res, cmd, cmdIdx) => {\n        if (typeof cmd === 'object' && cmd != null) {\n            if (cmd.outlets) {\n                const outlets = {};\n                forEach(cmd.outlets, (commands, name) => {\n                    outlets[name] = typeof commands === 'string' ? commands.split('/') : commands;\n                });\n                return [...res, { outlets }];\n            }\n            if (cmd.segmentPath) {\n                return [...res, cmd.segmentPath];\n            }\n        }\n        if (!(typeof cmd === 'string')) {\n            return [...res, cmd];\n        }\n        if (cmdIdx === 0) {\n            cmd.split('/').forEach((urlPart, partIndex) => {\n                if (partIndex == 0 && urlPart === '.') {\n                    // skip './a'\n                }\n                else if (partIndex == 0 && urlPart === '') { //  '/a'\n                    isAbsolute = true;\n                }\n                else if (urlPart === '..') { //  '../a'\n                    numberOfDoubleDots++;\n                }\n                else if (urlPart != '') {\n                    res.push(urlPart);\n                }\n            });\n            return res;\n        }\n        return [...res, cmd];\n    }, []);\n    return new Navigation(isAbsolute, numberOfDoubleDots, res);\n}\nclass Position {\n    constructor(segmentGroup, processChildren, index) {\n        this.segmentGroup = segmentGroup;\n        this.processChildren = processChildren;\n        this.index = index;\n    }\n}\nfunction findStartingPositionForTargetGroup(nav, root, target) {\n    if (nav.isAbsolute) {\n        return new Position(root, true, 0);\n    }\n    if (!target) {\n        // `NaN` is used only to maintain backwards compatibility with incorrectly mocked\n        // `ActivatedRouteSnapshot` in tests. In prior versions of this code, the position here was\n        // determined based on an internal property that was rarely mocked, resulting in `NaN`. In\n        // reality, this code path should _never_ be touched since `target` is not allowed to be falsey.\n        return new Position(root, false, NaN);\n    }\n    if (target.parent === null) {\n        return new Position(target, true, 0);\n    }\n    const modifier = isMatrixParams(nav.commands[0]) ? 0 : 1;\n    const index = target.segments.length - 1 + modifier;\n    return createPositionApplyingDoubleDots(target, index, nav.numberOfDoubleDots);\n}\nfunction findStartingPosition(nav, tree, segmentGroup, lastPathIndex) {\n    if (nav.isAbsolute) {\n        return new Position(tree.root, true, 0);\n    }\n    if (lastPathIndex === -1) {\n        // Pathless ActivatedRoute has _lastPathIndex === -1 but should not process children\n        // see issue #26224, #13011, #35687\n        // However, if the ActivatedRoute is the root we should process children like above.\n        const processChildren = segmentGroup === tree.root;\n        return new Position(segmentGroup, processChildren, 0);\n    }\n    const modifier = isMatrixParams(nav.commands[0]) ? 0 : 1;\n    const index = lastPathIndex + modifier;\n    return createPositionApplyingDoubleDots(segmentGroup, index, nav.numberOfDoubleDots);\n}\nfunction createPositionApplyingDoubleDots(group, index, numberOfDoubleDots) {\n    let g = group;\n    let ci = index;\n    let dd = numberOfDoubleDots;\n    while (dd > ci) {\n        dd -= ci;\n        g = g.parent;\n        if (!g) {\n            throw new ɵRuntimeError(4005 /* RuntimeErrorCode.INVALID_DOUBLE_DOTS */, NG_DEV_MODE$a && 'Invalid number of \\'../\\'');\n        }\n        ci = g.segments.length;\n    }\n    return new Position(g, false, ci - dd);\n}\nfunction getOutlets(commands) {\n    if (isCommandWithOutlets(commands[0])) {\n        return commands[0].outlets;\n    }\n    return { [PRIMARY_OUTLET]: commands };\n}\nfunction updateSegmentGroup(segmentGroup, startIndex, commands) {\n    if (!segmentGroup) {\n        segmentGroup = new UrlSegmentGroup([], {});\n    }\n    if (segmentGroup.segments.length === 0 && segmentGroup.hasChildren()) {\n        return updateSegmentGroupChildren(segmentGroup, startIndex, commands);\n    }\n    const m = prefixedWith(segmentGroup, startIndex, commands);\n    const slicedCommands = commands.slice(m.commandIndex);\n    if (m.match && m.pathIndex < segmentGroup.segments.length) {\n        const g = new UrlSegmentGroup(segmentGroup.segments.slice(0, m.pathIndex), {});\n        g.children[PRIMARY_OUTLET] =\n            new UrlSegmentGroup(segmentGroup.segments.slice(m.pathIndex), segmentGroup.children);\n        return updateSegmentGroupChildren(g, 0, slicedCommands);\n    }\n    else if (m.match && slicedCommands.length === 0) {\n        return new UrlSegmentGroup(segmentGroup.segments, {});\n    }\n    else if (m.match && !segmentGroup.hasChildren()) {\n        return createNewSegmentGroup(segmentGroup, startIndex, commands);\n    }\n    else if (m.match) {\n        return updateSegmentGroupChildren(segmentGroup, 0, slicedCommands);\n    }\n    else {\n        return createNewSegmentGroup(segmentGroup, startIndex, commands);\n    }\n}\nfunction updateSegmentGroupChildren(segmentGroup, startIndex, commands) {\n    if (commands.length === 0) {\n        return new UrlSegmentGroup(segmentGroup.segments, {});\n    }\n    else {\n        const outlets = getOutlets(commands);\n        const children = {};\n        // If the set of commands does not apply anything to the primary outlet and the child segment is\n        // an empty path primary segment on its own, we want to apply the commands to the empty child\n        // path rather than here. The outcome is that the empty primary child is effectively removed\n        // from the final output UrlTree. Imagine the following config:\n        //\n        // {path: '', children: [{path: '**', outlet: 'popup'}]}.\n        //\n        // Navigation to /(popup:a) will activate the child outlet correctly Given a follow-up\n        // navigation with commands\n        // ['/', {outlets: {'popup': 'b'}}], we _would not_ want to apply the outlet commands to the\n        // root segment because that would result in\n        // //(popup:a)(popup:b) since the outlet command got applied one level above where it appears in\n        // the `ActivatedRoute` rather than updating the existing one.\n        //\n        // Because empty paths do not appear in the URL segments and the fact that the segments used in\n        // the output `UrlTree` are squashed to eliminate these empty paths where possible\n        // https://github.com/angular/angular/blob/13f10de40e25c6900ca55bd83b36bd533dacfa9e/packages/router/src/url_tree.ts#L755\n        // it can be hard to determine what is the right thing to do when applying commands to a\n        // `UrlSegmentGroup` that is created from an \"unsquashed\"/expanded `ActivatedRoute` tree.\n        // This code effectively \"squashes\" empty path primary routes when they have no siblings on\n        // the same level of the tree.\n        if (!outlets[PRIMARY_OUTLET] && segmentGroup.children[PRIMARY_OUTLET] &&\n            segmentGroup.numberOfChildren === 1 &&\n            segmentGroup.children[PRIMARY_OUTLET].segments.length === 0) {\n            const childrenOfEmptyChild = updateSegmentGroupChildren(segmentGroup.children[PRIMARY_OUTLET], startIndex, commands);\n            return new UrlSegmentGroup(segmentGroup.segments, childrenOfEmptyChild.children);\n        }\n        forEach(outlets, (commands, outlet) => {\n            if (typeof commands === 'string') {\n                commands = [commands];\n            }\n            if (commands !== null) {\n                children[outlet] = updateSegmentGroup(segmentGroup.children[outlet], startIndex, commands);\n            }\n        });\n        forEach(segmentGroup.children, (child, childOutlet) => {\n            if (outlets[childOutlet] === undefined) {\n                children[childOutlet] = child;\n            }\n        });\n        return new UrlSegmentGroup(segmentGroup.segments, children);\n    }\n}\nfunction prefixedWith(segmentGroup, startIndex, commands) {\n    let currentCommandIndex = 0;\n    let currentPathIndex = startIndex;\n    const noMatch = { match: false, pathIndex: 0, commandIndex: 0 };\n    while (currentPathIndex < segmentGroup.segments.length) {\n        if (currentCommandIndex >= commands.length)\n            return noMatch;\n        const path = segmentGroup.segments[currentPathIndex];\n        const command = commands[currentCommandIndex];\n        // Do not try to consume command as part of the prefixing if it has outlets because it can\n        // contain outlets other than the one being processed. Consuming the outlets command would\n        // result in other outlets being ignored.\n        if (isCommandWithOutlets(command)) {\n            break;\n        }\n        const curr = `${command}`;\n        const next = currentCommandIndex < commands.length - 1 ? commands[currentCommandIndex + 1] : null;\n        if (currentPathIndex > 0 && curr === undefined)\n            break;\n        if (curr && next && (typeof next === 'object') && next.outlets === undefined) {\n            if (!compare(curr, next, path))\n                return noMatch;\n            currentCommandIndex += 2;\n        }\n        else {\n            if (!compare(curr, {}, path))\n                return noMatch;\n            currentCommandIndex++;\n        }\n        currentPathIndex++;\n    }\n    return { match: true, pathIndex: currentPathIndex, commandIndex: currentCommandIndex };\n}\nfunction createNewSegmentGroup(segmentGroup, startIndex, commands) {\n    const paths = segmentGroup.segments.slice(0, startIndex);\n    let i = 0;\n    while (i < commands.length) {\n        const command = commands[i];\n        if (isCommandWithOutlets(command)) {\n            const children = createNewSegmentChildren(command.outlets);\n            return new UrlSegmentGroup(paths, children);\n        }\n        // if we start with an object literal, we need to reuse the path part from the segment\n        if (i === 0 && isMatrixParams(commands[0])) {\n            const p = segmentGroup.segments[startIndex];\n            paths.push(new UrlSegment(p.path, stringify(commands[0])));\n            i++;\n            continue;\n        }\n        const curr = isCommandWithOutlets(command) ? command.outlets[PRIMARY_OUTLET] : `${command}`;\n        const next = (i < commands.length - 1) ? commands[i + 1] : null;\n        if (curr && next && isMatrixParams(next)) {\n            paths.push(new UrlSegment(curr, stringify(next)));\n            i += 2;\n        }\n        else {\n            paths.push(new UrlSegment(curr, {}));\n            i++;\n        }\n    }\n    return new UrlSegmentGroup(paths, {});\n}\nfunction createNewSegmentChildren(outlets) {\n    const children = {};\n    forEach(outlets, (commands, outlet) => {\n        if (typeof commands === 'string') {\n            commands = [commands];\n        }\n        if (commands !== null) {\n            children[outlet] = createNewSegmentGroup(new UrlSegmentGroup([], {}), 0, commands);\n        }\n    });\n    return children;\n}\nfunction stringify(params) {\n    const res = {};\n    forEach(params, (v, k) => res[k] = `${v}`);\n    return res;\n}\nfunction compare(path, params, segment) {\n    return path == segment.path && shallowEqual(params, segment.parameters);\n}\n\nconst IMPERATIVE_NAVIGATION = 'imperative';\n/**\n * Base for events the router goes through, as opposed to events tied to a specific\n * route. Fired one time for any given navigation.\n *\n * The following code shows how a class subscribes to router events.\n *\n * ```ts\n * import {Event, RouterEvent, Router} from '@angular/router';\n *\n * class MyService {\n *   constructor(public router: Router) {\n *     router.events.pipe(\n *        filter((e: Event): e is RouterEvent => e instanceof RouterEvent)\n *     ).subscribe((e: RouterEvent) => {\n *       // Do something\n *     });\n *   }\n * }\n * ```\n *\n * @see `Event`\n * @see [Router events summary](guide/router-reference#router-events)\n * @publicApi\n */\nclass RouterEvent {\n    constructor(\n    /** A unique ID that the router assigns to every router navigation. */\n    id, \n    /** The URL that is the destination for this navigation. */\n    url) {\n        this.id = id;\n        this.url = url;\n    }\n}\n/**\n * An event triggered when a navigation starts.\n *\n * @publicApi\n */\nclass NavigationStart extends RouterEvent {\n    constructor(\n    /** @docsNotRequired */\n    id, \n    /** @docsNotRequired */\n    url, \n    /** @docsNotRequired */\n    navigationTrigger = 'imperative', \n    /** @docsNotRequired */\n    restoredState = null) {\n        super(id, url);\n        this.type = 0 /* EventType.NavigationStart */;\n        this.navigationTrigger = navigationTrigger;\n        this.restoredState = restoredState;\n    }\n    /** @docsNotRequired */\n    toString() {\n        return `NavigationStart(id: ${this.id}, url: '${this.url}')`;\n    }\n}\n/**\n * An event triggered when a navigation ends successfully.\n *\n * @see `NavigationStart`\n * @see `NavigationCancel`\n * @see `NavigationError`\n *\n * @publicApi\n */\nclass NavigationEnd extends RouterEvent {\n    constructor(\n    /** @docsNotRequired */\n    id, \n    /** @docsNotRequired */\n    url, \n    /** @docsNotRequired */\n    urlAfterRedirects) {\n        super(id, url);\n        this.urlAfterRedirects = urlAfterRedirects;\n        this.type = 1 /* EventType.NavigationEnd */;\n    }\n    /** @docsNotRequired */\n    toString() {\n        return `NavigationEnd(id: ${this.id}, url: '${this.url}', urlAfterRedirects: '${this.urlAfterRedirects}')`;\n    }\n}\n/**\n * An event triggered when a navigation is canceled, directly or indirectly.\n * This can happen for several reasons including when a route guard\n * returns `false` or initiates a redirect by returning a `UrlTree`.\n *\n * @see `NavigationStart`\n * @see `NavigationEnd`\n * @see `NavigationError`\n *\n * @publicApi\n */\nclass NavigationCancel extends RouterEvent {\n    constructor(\n    /** @docsNotRequired */\n    id, \n    /** @docsNotRequired */\n    url, \n    /**\n     * A description of why the navigation was cancelled. For debug purposes only. Use `code`\n     * instead for a stable cancellation reason that can be used in production.\n     */\n    reason, \n    /**\n     * A code to indicate why the navigation was canceled. This cancellation code is stable for\n     * the reason and can be relied on whereas the `reason` string could change and should not be\n     * used in production.\n     */\n    code) {\n        super(id, url);\n        this.reason = reason;\n        this.code = code;\n        this.type = 2 /* EventType.NavigationCancel */;\n    }\n    /** @docsNotRequired */\n    toString() {\n        return `NavigationCancel(id: ${this.id}, url: '${this.url}')`;\n    }\n}\n/**\n * An event triggered when a navigation is skipped.\n * This can happen for a couple reasons including onSameUrlHandling\n * is set to `ignore` and the navigation URL is not different than the\n * current state.\n *\n * @publicApi\n */\nclass NavigationSkipped extends RouterEvent {\n    constructor(\n    /** @docsNotRequired */\n    id, \n    /** @docsNotRequired */\n    url, \n    /**\n     * A description of why the navigation was skipped. For debug purposes only. Use `code`\n     * instead for a stable skipped reason that can be used in production.\n     */\n    reason, \n    /**\n     * A code to indicate why the navigation was skipped. This code is stable for\n     * the reason and can be relied on whereas the `reason` string could change and should not be\n     * used in production.\n     */\n    code) {\n        super(id, url);\n        this.reason = reason;\n        this.code = code;\n        this.type = 16 /* EventType.NavigationSkipped */;\n    }\n}\n/**\n * An event triggered when a navigation fails due to an unexpected error.\n *\n * @see `NavigationStart`\n * @see `NavigationEnd`\n * @see `NavigationCancel`\n *\n * @publicApi\n */\nclass NavigationError extends RouterEvent {\n    constructor(\n    /** @docsNotRequired */\n    id, \n    /** @docsNotRequired */\n    url, \n    /** @docsNotRequired */\n    error, \n    /**\n     * The target of the navigation when the error occurred.\n     *\n     * Note that this can be `undefined` because an error could have occurred before the\n     * `RouterStateSnapshot` was created for the navigation.\n     */\n    target) {\n        super(id, url);\n        this.error = error;\n        this.target = target;\n        this.type = 3 /* EventType.NavigationError */;\n    }\n    /** @docsNotRequired */\n    toString() {\n        return `NavigationError(id: ${this.id}, url: '${this.url}', error: ${this.error})`;\n    }\n}\n/**\n * An event triggered when routes are recognized.\n *\n * @publicApi\n */\nclass RoutesRecognized extends RouterEvent {\n    constructor(\n    /** @docsNotRequired */\n    id, \n    /** @docsNotRequired */\n    url, \n    /** @docsNotRequired */\n    urlAfterRedirects, \n    /** @docsNotRequired */\n    state) {\n        super(id, url);\n        this.urlAfterRedirects = urlAfterRedirects;\n        this.state = state;\n        this.type = 4 /* EventType.RoutesRecognized */;\n    }\n    /** @docsNotRequired */\n    toString() {\n        return `RoutesRecognized(id: ${this.id}, url: '${this.url}', urlAfterRedirects: '${this.urlAfterRedirects}', state: ${this.state})`;\n    }\n}\n/**\n * An event triggered at the start of the Guard phase of routing.\n *\n * @see `GuardsCheckEnd`\n *\n * @publicApi\n */\nclass GuardsCheckStart extends RouterEvent {\n    constructor(\n    /** @docsNotRequired */\n    id, \n    /** @docsNotRequired */\n    url, \n    /** @docsNotRequired */\n    urlAfterRedirects, \n    /** @docsNotRequired */\n    state) {\n        super(id, url);\n        this.urlAfterRedirects = urlAfterRedirects;\n        this.state = state;\n        this.type = 7 /* EventType.GuardsCheckStart */;\n    }\n    toString() {\n        return `GuardsCheckStart(id: ${this.id}, url: '${this.url}', urlAfterRedirects: '${this.urlAfterRedirects}', state: ${this.state})`;\n    }\n}\n/**\n * An event triggered at the end of the Guard phase of routing.\n *\n * @see `GuardsCheckStart`\n *\n * @publicApi\n */\nclass GuardsCheckEnd extends RouterEvent {\n    constructor(\n    /** @docsNotRequired */\n    id, \n    /** @docsNotRequired */\n    url, \n    /** @docsNotRequired */\n    urlAfterRedirects, \n    /** @docsNotRequired */\n    state, \n    /** @docsNotRequired */\n    shouldActivate) {\n        super(id, url);\n        this.urlAfterRedirects = urlAfterRedirects;\n        this.state = state;\n        this.shouldActivate = shouldActivate;\n        this.type = 8 /* EventType.GuardsCheckEnd */;\n    }\n    toString() {\n        return `GuardsCheckEnd(id: ${this.id}, url: '${this.url}', urlAfterRedirects: '${this.urlAfterRedirects}', state: ${this.state}, shouldActivate: ${this.shouldActivate})`;\n    }\n}\n/**\n * An event triggered at the start of the Resolve phase of routing.\n *\n * Runs in the \"resolve\" phase whether or not there is anything to resolve.\n * In future, may change to only run when there are things to be resolved.\n *\n * @see `ResolveEnd`\n *\n * @publicApi\n */\nclass ResolveStart extends RouterEvent {\n    constructor(\n    /** @docsNotRequired */\n    id, \n    /** @docsNotRequired */\n    url, \n    /** @docsNotRequired */\n    urlAfterRedirects, \n    /** @docsNotRequired */\n    state) {\n        super(id, url);\n        this.urlAfterRedirects = urlAfterRedirects;\n        this.state = state;\n        this.type = 5 /* EventType.ResolveStart */;\n    }\n    toString() {\n        return `ResolveStart(id: ${this.id}, url: '${this.url}', urlAfterRedirects: '${this.urlAfterRedirects}', state: ${this.state})`;\n    }\n}\n/**\n * An event triggered at the end of the Resolve phase of routing.\n * @see `ResolveStart`.\n *\n * @publicApi\n */\nclass ResolveEnd extends RouterEvent {\n    constructor(\n    /** @docsNotRequired */\n    id, \n    /** @docsNotRequired */\n    url, \n    /** @docsNotRequired */\n    urlAfterRedirects, \n    /** @docsNotRequired */\n    state) {\n        super(id, url);\n        this.urlAfterRedirects = urlAfterRedirects;\n        this.state = state;\n        this.type = 6 /* EventType.ResolveEnd */;\n    }\n    toString() {\n        return `ResolveEnd(id: ${this.id}, url: '${this.url}', urlAfterRedirects: '${this.urlAfterRedirects}', state: ${this.state})`;\n    }\n}\n/**\n * An event triggered before lazy loading a route configuration.\n *\n * @see `RouteConfigLoadEnd`\n *\n * @publicApi\n */\nclass RouteConfigLoadStart {\n    constructor(\n    /** @docsNotRequired */\n    route) {\n        this.route = route;\n        this.type = 9 /* EventType.RouteConfigLoadStart */;\n    }\n    toString() {\n        return `RouteConfigLoadStart(path: ${this.route.path})`;\n    }\n}\n/**\n * An event triggered when a route has been lazy loaded.\n *\n * @see `RouteConfigLoadStart`\n *\n * @publicApi\n */\nclass RouteConfigLoadEnd {\n    constructor(\n    /** @docsNotRequired */\n    route) {\n        this.route = route;\n        this.type = 10 /* EventType.RouteConfigLoadEnd */;\n    }\n    toString() {\n        return `RouteConfigLoadEnd(path: ${this.route.path})`;\n    }\n}\n/**\n * An event triggered at the start of the child-activation\n * part of the Resolve phase of routing.\n * @see  `ChildActivationEnd`\n * @see `ResolveStart`\n *\n * @publicApi\n */\nclass ChildActivationStart {\n    constructor(\n    /** @docsNotRequired */\n    snapshot) {\n        this.snapshot = snapshot;\n        this.type = 11 /* EventType.ChildActivationStart */;\n    }\n    toString() {\n        const path = this.snapshot.routeConfig && this.snapshot.routeConfig.path || '';\n        return `ChildActivationStart(path: '${path}')`;\n    }\n}\n/**\n * An event triggered at the end of the child-activation part\n * of the Resolve phase of routing.\n * @see `ChildActivationStart`\n * @see `ResolveStart`\n * @publicApi\n */\nclass ChildActivationEnd {\n    constructor(\n    /** @docsNotRequired */\n    snapshot) {\n        this.snapshot = snapshot;\n        this.type = 12 /* EventType.ChildActivationEnd */;\n    }\n    toString() {\n        const path = this.snapshot.routeConfig && this.snapshot.routeConfig.path || '';\n        return `ChildActivationEnd(path: '${path}')`;\n    }\n}\n/**\n * An event triggered at the start of the activation part\n * of the Resolve phase of routing.\n * @see `ActivationEnd`\n * @see `ResolveStart`\n *\n * @publicApi\n */\nclass ActivationStart {\n    constructor(\n    /** @docsNotRequired */\n    snapshot) {\n        this.snapshot = snapshot;\n        this.type = 13 /* EventType.ActivationStart */;\n    }\n    toString() {\n        const path = this.snapshot.routeConfig && this.snapshot.routeConfig.path || '';\n        return `ActivationStart(path: '${path}')`;\n    }\n}\n/**\n * An event triggered at the end of the activation part\n * of the Resolve phase of routing.\n * @see `ActivationStart`\n * @see `ResolveStart`\n *\n * @publicApi\n */\nclass ActivationEnd {\n    constructor(\n    /** @docsNotRequired */\n    snapshot) {\n        this.snapshot = snapshot;\n        this.type = 14 /* EventType.ActivationEnd */;\n    }\n    toString() {\n        const path = this.snapshot.routeConfig && this.snapshot.routeConfig.path || '';\n        return `ActivationEnd(path: '${path}')`;\n    }\n}\n/**\n * An event triggered by scrolling.\n *\n * @publicApi\n */\nclass Scroll {\n    constructor(\n    /** @docsNotRequired */\n    routerEvent, \n    /** @docsNotRequired */\n    position, \n    /** @docsNotRequired */\n    anchor) {\n        this.routerEvent = routerEvent;\n        this.position = position;\n        this.anchor = anchor;\n        this.type = 15 /* EventType.Scroll */;\n    }\n    toString() {\n        const pos = this.position ? `${this.position[0]}, ${this.position[1]}` : null;\n        return `Scroll(anchor: '${this.anchor}', position: '${pos}')`;\n    }\n}\nfunction stringifyEvent(routerEvent) {\n    if (!('type' in routerEvent)) {\n        return `Unknown Router Event: ${routerEvent.constructor.name}`;\n    }\n    switch (routerEvent.type) {\n        case 14 /* EventType.ActivationEnd */:\n            return `ActivationEnd(path: '${routerEvent.snapshot.routeConfig?.path || ''}')`;\n        case 13 /* EventType.ActivationStart */:\n            return `ActivationStart(path: '${routerEvent.snapshot.routeConfig?.path || ''}')`;\n        case 12 /* EventType.ChildActivationEnd */:\n            return `ChildActivationEnd(path: '${routerEvent.snapshot.routeConfig?.path || ''}')`;\n        case 11 /* EventType.ChildActivationStart */:\n            return `ChildActivationStart(path: '${routerEvent.snapshot.routeConfig?.path || ''}')`;\n        case 8 /* EventType.GuardsCheckEnd */:\n            return `GuardsCheckEnd(id: ${routerEvent.id}, url: '${routerEvent.url}', urlAfterRedirects: '${routerEvent.urlAfterRedirects}', state: ${routerEvent.state}, shouldActivate: ${routerEvent.shouldActivate})`;\n        case 7 /* EventType.GuardsCheckStart */:\n            return `GuardsCheckStart(id: ${routerEvent.id}, url: '${routerEvent.url}', urlAfterRedirects: '${routerEvent.urlAfterRedirects}', state: ${routerEvent.state})`;\n        case 2 /* EventType.NavigationCancel */:\n            return `NavigationCancel(id: ${routerEvent.id}, url: '${routerEvent.url}')`;\n        case 16 /* EventType.NavigationSkipped */:\n            return `NavigationSkipped(id: ${routerEvent.id}, url: '${routerEvent.url}')`;\n        case 1 /* EventType.NavigationEnd */:\n            return `NavigationEnd(id: ${routerEvent.id}, url: '${routerEvent.url}', urlAfterRedirects: '${routerEvent.urlAfterRedirects}')`;\n        case 3 /* EventType.NavigationError */:\n            return `NavigationError(id: ${routerEvent.id}, url: '${routerEvent.url}', error: ${routerEvent.error})`;\n        case 0 /* EventType.NavigationStart */:\n            return `NavigationStart(id: ${routerEvent.id}, url: '${routerEvent.url}')`;\n        case 6 /* EventType.ResolveEnd */:\n            return `ResolveEnd(id: ${routerEvent.id}, url: '${routerEvent.url}', urlAfterRedirects: '${routerEvent.urlAfterRedirects}', state: ${routerEvent.state})`;\n        case 5 /* EventType.ResolveStart */:\n            return `ResolveStart(id: ${routerEvent.id}, url: '${routerEvent.url}', urlAfterRedirects: '${routerEvent.urlAfterRedirects}', state: ${routerEvent.state})`;\n        case 10 /* EventType.RouteConfigLoadEnd */:\n            return `RouteConfigLoadEnd(path: ${routerEvent.route.path})`;\n        case 9 /* EventType.RouteConfigLoadStart */:\n            return `RouteConfigLoadStart(path: ${routerEvent.route.path})`;\n        case 4 /* EventType.RoutesRecognized */:\n            return `RoutesRecognized(id: ${routerEvent.id}, url: '${routerEvent.url}', urlAfterRedirects: '${routerEvent.urlAfterRedirects}', state: ${routerEvent.state})`;\n        case 15 /* EventType.Scroll */:\n            const pos = routerEvent.position ? `${routerEvent.position[0]}, ${routerEvent.position[1]}` : null;\n            return `Scroll(anchor: '${routerEvent.anchor}', position: '${pos}')`;\n    }\n}\n\nconst NG_DEV_MODE$9 = typeof ngDevMode === 'undefined' || ngDevMode;\nclass LegacyCreateUrlTree {\n    createUrlTree(relativeTo, currentState, currentUrlTree, commands, queryParams, fragment) {\n        const a = relativeTo || currentState.root;\n        const tree = createUrlTree(a, currentUrlTree, commands, queryParams, fragment);\n        if (NG_DEV_MODE$9) {\n            const treeFromSnapshotStrategy = new CreateUrlTreeUsingSnapshot().createUrlTree(relativeTo, currentState, currentUrlTree, commands, queryParams, fragment);\n            if (treeFromSnapshotStrategy.toString() !== tree.toString()) {\n                let warningString = `The navigation to ${tree.toString()} will instead go to ${treeFromSnapshotStrategy.toString()} in an upcoming version of Angular.`;\n                if (!!relativeTo) {\n                    warningString += ' `relativeTo` might need to be removed from the `UrlCreationOptions`.';\n                }\n                tree._warnIfUsedForNavigation = warningString;\n            }\n        }\n        return tree;\n    }\n}\nLegacyCreateUrlTree.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: LegacyCreateUrlTree, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nLegacyCreateUrlTree.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: LegacyCreateUrlTree });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: LegacyCreateUrlTree, decorators: [{\n            type: Injectable\n        }] });\nclass CreateUrlTreeUsingSnapshot {\n    createUrlTree(relativeTo, currentState, currentUrlTree, commands, queryParams, fragment) {\n        let relativeToUrlSegmentGroup;\n        try {\n            const relativeToSnapshot = relativeTo ? relativeTo.snapshot : currentState.snapshot.root;\n            relativeToUrlSegmentGroup = createSegmentGroupFromRoute(relativeToSnapshot);\n        }\n        catch (e) {\n            // This is strictly for backwards compatibility with tests that create\n            // invalid `ActivatedRoute` mocks.\n            // Note: the difference between having this fallback for invalid `ActivatedRoute` setups and\n            // just throwing is ~500 test failures. Fixing all of those tests by hand is not feasible at\n            // the moment.\n            if (typeof commands[0] !== 'string' || !commands[0].startsWith('/')) {\n                // Navigations that were absolute in the old way of creating UrlTrees\n                // would still work because they wouldn't attempt to match the\n                // segments in the `ActivatedRoute` to the `currentUrlTree` but\n                // instead just replace the root segment with the navigation result.\n                // Non-absolute navigations would fail to apply the commands because\n                // the logic could not find the segment to replace (so they'd act like there were no\n                // commands).\n                commands = [];\n            }\n            relativeToUrlSegmentGroup = currentUrlTree.root;\n        }\n        return createUrlTreeFromSegmentGroup(relativeToUrlSegmentGroup, commands, queryParams, fragment);\n    }\n}\nCreateUrlTreeUsingSnapshot.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: CreateUrlTreeUsingSnapshot, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nCreateUrlTreeUsingSnapshot.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: CreateUrlTreeUsingSnapshot });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: CreateUrlTreeUsingSnapshot, decorators: [{\n            type: Injectable\n        }] });\nclass CreateUrlTreeStrategy {\n}\nCreateUrlTreeStrategy.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: CreateUrlTreeStrategy, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nCreateUrlTreeStrategy.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: CreateUrlTreeStrategy, providedIn: 'root', useClass: LegacyCreateUrlTree });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: CreateUrlTreeStrategy, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root', useClass: LegacyCreateUrlTree }]\n        }] });\n\nclass Tree {\n    constructor(root) {\n        this._root = root;\n    }\n    get root() {\n        return this._root.value;\n    }\n    /**\n     * @internal\n     */\n    parent(t) {\n        const p = this.pathFromRoot(t);\n        return p.length > 1 ? p[p.length - 2] : null;\n    }\n    /**\n     * @internal\n     */\n    children(t) {\n        const n = findNode(t, this._root);\n        return n ? n.children.map(t => t.value) : [];\n    }\n    /**\n     * @internal\n     */\n    firstChild(t) {\n        const n = findNode(t, this._root);\n        return n && n.children.length > 0 ? n.children[0].value : null;\n    }\n    /**\n     * @internal\n     */\n    siblings(t) {\n        const p = findPath(t, this._root);\n        if (p.length < 2)\n            return [];\n        const c = p[p.length - 2].children.map(c => c.value);\n        return c.filter(cc => cc !== t);\n    }\n    /**\n     * @internal\n     */\n    pathFromRoot(t) {\n        return findPath(t, this._root).map(s => s.value);\n    }\n}\n// DFS for the node matching the value\nfunction findNode(value, node) {\n    if (value === node.value)\n        return node;\n    for (const child of node.children) {\n        const node = findNode(value, child);\n        if (node)\n            return node;\n    }\n    return null;\n}\n// Return the path to the node with the given value using DFS\nfunction findPath(value, node) {\n    if (value === node.value)\n        return [node];\n    for (const child of node.children) {\n        const path = findPath(value, child);\n        if (path.length) {\n            path.unshift(node);\n            return path;\n        }\n    }\n    return [];\n}\nclass TreeNode {\n    constructor(value, children) {\n        this.value = value;\n        this.children = children;\n    }\n    toString() {\n        return `TreeNode(${this.value})`;\n    }\n}\n// Return the list of T indexed by outlet name\nfunction nodeChildrenAsMap(node) {\n    const map = {};\n    if (node) {\n        node.children.forEach(child => map[child.value.outlet] = child);\n    }\n    return map;\n}\n\n/**\n * Represents the state of the router as a tree of activated routes.\n *\n * @usageNotes\n *\n * Every node in the route tree is an `ActivatedRoute` instance\n * that knows about the \"consumed\" URL segments, the extracted parameters,\n * and the resolved data.\n * Use the `ActivatedRoute` properties to traverse the tree from any node.\n *\n * The following fragment shows how a component gets the root node\n * of the current state to establish its own route tree:\n *\n * ```\n * @Component({templateUrl:'template.html'})\n * class MyComponent {\n *   constructor(router: Router) {\n *     const state: RouterState = router.routerState;\n *     const root: ActivatedRoute = state.root;\n *     const child = root.firstChild;\n *     const id: Observable<string> = child.params.map(p => p.id);\n *     //...\n *   }\n * }\n * ```\n *\n * @see `ActivatedRoute`\n * @see [Getting route information](guide/router#getting-route-information)\n *\n * @publicApi\n */\nclass RouterState extends Tree {\n    /** @internal */\n    constructor(root, \n    /** The current snapshot of the router state */\n    snapshot) {\n        super(root);\n        this.snapshot = snapshot;\n        setRouterState(this, root);\n    }\n    toString() {\n        return this.snapshot.toString();\n    }\n}\nfunction createEmptyState(urlTree, rootComponent) {\n    const snapshot = createEmptyStateSnapshot(urlTree, rootComponent);\n    const emptyUrl = new BehaviorSubject([new UrlSegment('', {})]);\n    const emptyParams = new BehaviorSubject({});\n    const emptyData = new BehaviorSubject({});\n    const emptyQueryParams = new BehaviorSubject({});\n    const fragment = new BehaviorSubject('');\n    const activated = new ActivatedRoute(emptyUrl, emptyParams, emptyQueryParams, fragment, emptyData, PRIMARY_OUTLET, rootComponent, snapshot.root);\n    activated.snapshot = snapshot.root;\n    return new RouterState(new TreeNode(activated, []), snapshot);\n}\nfunction createEmptyStateSnapshot(urlTree, rootComponent) {\n    const emptyParams = {};\n    const emptyData = {};\n    const emptyQueryParams = {};\n    const fragment = '';\n    const activated = new ActivatedRouteSnapshot([], emptyParams, emptyQueryParams, fragment, emptyData, PRIMARY_OUTLET, rootComponent, null, urlTree.root, -1, {});\n    return new RouterStateSnapshot('', new TreeNode(activated, []));\n}\n/**\n * Provides access to information about a route associated with a component\n * that is loaded in an outlet.\n * Use to traverse the `RouterState` tree and extract information from nodes.\n *\n * The following example shows how to construct a component using information from a\n * currently activated route.\n *\n * Note: the observables in this class only emit when the current and previous values differ based\n * on shallow equality. For example, changing deeply nested properties in resolved `data` will not\n * cause the `ActivatedRoute.data` `Observable` to emit a new value.\n *\n * {@example router/activated-route/module.ts region=\"activated-route\"\n *     header=\"activated-route.component.ts\"}\n *\n * @see [Getting route information](guide/router#getting-route-information)\n *\n * @publicApi\n */\nclass ActivatedRoute {\n    /** @internal */\n    constructor(\n    /** An observable of the URL segments matched by this route. */\n    url, \n    /** An observable of the matrix parameters scoped to this route. */\n    params, \n    /** An observable of the query parameters shared by all the routes. */\n    queryParams, \n    /** An observable of the URL fragment shared by all the routes. */\n    fragment, \n    /** An observable of the static and resolved data of this route. */\n    data, \n    /** The outlet name of the route, a constant. */\n    outlet, \n    /** The component of the route, a constant. */\n    component, futureSnapshot) {\n        this.url = url;\n        this.params = params;\n        this.queryParams = queryParams;\n        this.fragment = fragment;\n        this.data = data;\n        this.outlet = outlet;\n        this.component = component;\n        /** An Observable of the resolved route title */\n        this.title = this.data?.pipe(map((d) => d[RouteTitleKey])) ?? of(undefined);\n        this._futureSnapshot = futureSnapshot;\n    }\n    /** The configuration used to match this route. */\n    get routeConfig() {\n        return this._futureSnapshot.routeConfig;\n    }\n    /** The root of the router state. */\n    get root() {\n        return this._routerState.root;\n    }\n    /** The parent of this route in the router state tree. */\n    get parent() {\n        return this._routerState.parent(this);\n    }\n    /** The first child of this route in the router state tree. */\n    get firstChild() {\n        return this._routerState.firstChild(this);\n    }\n    /** The children of this route in the router state tree. */\n    get children() {\n        return this._routerState.children(this);\n    }\n    /** The path from the root of the router state tree to this route. */\n    get pathFromRoot() {\n        return this._routerState.pathFromRoot(this);\n    }\n    /**\n     * An Observable that contains a map of the required and optional parameters\n     * specific to the route.\n     * The map supports retrieving single and multiple values from the same parameter.\n     */\n    get paramMap() {\n        if (!this._paramMap) {\n            this._paramMap = this.params.pipe(map((p) => convertToParamMap(p)));\n        }\n        return this._paramMap;\n    }\n    /**\n     * An Observable that contains a map of the query parameters available to all routes.\n     * The map supports retrieving single and multiple values from the query parameter.\n     */\n    get queryParamMap() {\n        if (!this._queryParamMap) {\n            this._queryParamMap =\n                this.queryParams.pipe(map((p) => convertToParamMap(p)));\n        }\n        return this._queryParamMap;\n    }\n    toString() {\n        return this.snapshot ? this.snapshot.toString() : `Future(${this._futureSnapshot})`;\n    }\n}\n/**\n * Returns the inherited params, data, and resolve for a given route.\n * By default, this only inherits values up to the nearest path-less or component-less route.\n * @internal\n */\nfunction inheritedParamsDataResolve(route, paramsInheritanceStrategy = 'emptyOnly') {\n    const pathFromRoot = route.pathFromRoot;\n    let inheritingStartingFrom = 0;\n    if (paramsInheritanceStrategy !== 'always') {\n        inheritingStartingFrom = pathFromRoot.length - 1;\n        while (inheritingStartingFrom >= 1) {\n            const current = pathFromRoot[inheritingStartingFrom];\n            const parent = pathFromRoot[inheritingStartingFrom - 1];\n            // current route is an empty path => inherits its parent's params and data\n            if (current.routeConfig && current.routeConfig.path === '') {\n                inheritingStartingFrom--;\n                // parent is componentless => current route should inherit its params and data\n            }\n            else if (!parent.component) {\n                inheritingStartingFrom--;\n            }\n            else {\n                break;\n            }\n        }\n    }\n    return flattenInherited(pathFromRoot.slice(inheritingStartingFrom));\n}\n/** @internal */\nfunction flattenInherited(pathFromRoot) {\n    return pathFromRoot.reduce((res, curr) => {\n        const params = { ...res.params, ...curr.params };\n        const data = { ...res.data, ...curr.data };\n        const resolve = { ...curr.data, ...res.resolve, ...curr.routeConfig?.data, ...curr._resolvedData };\n        return { params, data, resolve };\n    }, { params: {}, data: {}, resolve: {} });\n}\n/**\n * @description\n *\n * Contains the information about a route associated with a component loaded in an\n * outlet at a particular moment in time. ActivatedRouteSnapshot can also be used to\n * traverse the router state tree.\n *\n * The following example initializes a component with route information extracted\n * from the snapshot of the root node at the time of creation.\n *\n * ```\n * @Component({templateUrl:'./my-component.html'})\n * class MyComponent {\n *   constructor(route: ActivatedRoute) {\n *     const id: string = route.snapshot.params.id;\n *     const url: string = route.snapshot.url.join('');\n *     const user = route.snapshot.data.user;\n *   }\n * }\n * ```\n *\n * @publicApi\n */\nclass ActivatedRouteSnapshot {\n    /** The resolved route title */\n    get title() {\n        // Note: This _must_ be a getter because the data is mutated in the resolvers. Title will not be\n        // available at the time of class instantiation.\n        return this.data?.[RouteTitleKey];\n    }\n    /** @internal */\n    constructor(\n    /** The URL segments matched by this route */\n    url, \n    /**\n     *  The matrix parameters scoped to this route.\n     *\n     *  You can compute all params (or data) in the router state or to get params outside\n     *  of an activated component by traversing the `RouterState` tree as in the following\n     *  example:\n     *  ```\n     *  collectRouteParams(router: Router) {\n     *    let params = {};\n     *    let stack: ActivatedRouteSnapshot[] = [router.routerState.snapshot.root];\n     *    while (stack.length > 0) {\n     *      const route = stack.pop()!;\n     *      params = {...params, ...route.params};\n     *      stack.push(...route.children);\n     *    }\n     *    return params;\n     *  }\n     *  ```\n     */\n    params, \n    /** The query parameters shared by all the routes */\n    queryParams, \n    /** The URL fragment shared by all the routes */\n    fragment, \n    /** The static and resolved data of this route */\n    data, \n    /** The outlet name of the route */\n    outlet, \n    /** The component of the route */\n    component, routeConfig, urlSegment, lastPathIndex, resolve) {\n        this.url = url;\n        this.params = params;\n        this.queryParams = queryParams;\n        this.fragment = fragment;\n        this.data = data;\n        this.outlet = outlet;\n        this.component = component;\n        this.routeConfig = routeConfig;\n        this._urlSegment = urlSegment;\n        this._lastPathIndex = lastPathIndex;\n        this._resolve = resolve;\n    }\n    /** The root of the router state */\n    get root() {\n        return this._routerState.root;\n    }\n    /** The parent of this route in the router state tree */\n    get parent() {\n        return this._routerState.parent(this);\n    }\n    /** The first child of this route in the router state tree */\n    get firstChild() {\n        return this._routerState.firstChild(this);\n    }\n    /** The children of this route in the router state tree */\n    get children() {\n        return this._routerState.children(this);\n    }\n    /** The path from the root of the router state tree to this route */\n    get pathFromRoot() {\n        return this._routerState.pathFromRoot(this);\n    }\n    get paramMap() {\n        if (!this._paramMap) {\n            this._paramMap = convertToParamMap(this.params);\n        }\n        return this._paramMap;\n    }\n    get queryParamMap() {\n        if (!this._queryParamMap) {\n            this._queryParamMap = convertToParamMap(this.queryParams);\n        }\n        return this._queryParamMap;\n    }\n    toString() {\n        const url = this.url.map(segment => segment.toString()).join('/');\n        const matched = this.routeConfig ? this.routeConfig.path : '';\n        return `Route(url:'${url}', path:'${matched}')`;\n    }\n}\n/**\n * @description\n *\n * Represents the state of the router at a moment in time.\n *\n * This is a tree of activated route snapshots. Every node in this tree knows about\n * the \"consumed\" URL segments, the extracted parameters, and the resolved data.\n *\n * The following example shows how a component is initialized with information\n * from the snapshot of the root node's state at the time of creation.\n *\n * ```\n * @Component({templateUrl:'template.html'})\n * class MyComponent {\n *   constructor(router: Router) {\n *     const state: RouterState = router.routerState;\n *     const snapshot: RouterStateSnapshot = state.snapshot;\n *     const root: ActivatedRouteSnapshot = snapshot.root;\n *     const child = root.firstChild;\n *     const id: Observable<string> = child.params.map(p => p.id);\n *     //...\n *   }\n * }\n * ```\n *\n * @publicApi\n */\nclass RouterStateSnapshot extends Tree {\n    /** @internal */\n    constructor(\n    /** The url from which this snapshot was created */\n    url, root) {\n        super(root);\n        this.url = url;\n        setRouterState(this, root);\n    }\n    toString() {\n        return serializeNode(this._root);\n    }\n}\nfunction setRouterState(state, node) {\n    node.value._routerState = state;\n    node.children.forEach(c => setRouterState(state, c));\n}\nfunction serializeNode(node) {\n    const c = node.children.length > 0 ? ` { ${node.children.map(serializeNode).join(', ')} } ` : '';\n    return `${node.value}${c}`;\n}\n/**\n * The expectation is that the activate route is created with the right set of parameters.\n * So we push new values into the observables only when they are not the initial values.\n * And we detect that by checking if the snapshot field is set.\n */\nfunction advanceActivatedRoute(route) {\n    if (route.snapshot) {\n        const currentSnapshot = route.snapshot;\n        const nextSnapshot = route._futureSnapshot;\n        route.snapshot = nextSnapshot;\n        if (!shallowEqual(currentSnapshot.queryParams, nextSnapshot.queryParams)) {\n            route.queryParams.next(nextSnapshot.queryParams);\n        }\n        if (currentSnapshot.fragment !== nextSnapshot.fragment) {\n            route.fragment.next(nextSnapshot.fragment);\n        }\n        if (!shallowEqual(currentSnapshot.params, nextSnapshot.params)) {\n            route.params.next(nextSnapshot.params);\n        }\n        if (!shallowEqualArrays(currentSnapshot.url, nextSnapshot.url)) {\n            route.url.next(nextSnapshot.url);\n        }\n        if (!shallowEqual(currentSnapshot.data, nextSnapshot.data)) {\n            route.data.next(nextSnapshot.data);\n        }\n    }\n    else {\n        route.snapshot = route._futureSnapshot;\n        // this is for resolved data\n        route.data.next(route._futureSnapshot.data);\n    }\n}\nfunction equalParamsAndUrlSegments(a, b) {\n    const equalUrlParams = shallowEqual(a.params, b.params) && equalSegments(a.url, b.url);\n    const parentsMismatch = !a.parent !== !b.parent;\n    return equalUrlParams && !parentsMismatch &&\n        (!a.parent || equalParamsAndUrlSegments(a.parent, b.parent));\n}\n\nfunction createRouterState(routeReuseStrategy, curr, prevState) {\n    const root = createNode(routeReuseStrategy, curr._root, prevState ? prevState._root : undefined);\n    return new RouterState(root, curr);\n}\nfunction createNode(routeReuseStrategy, curr, prevState) {\n    // reuse an activated route that is currently displayed on the screen\n    if (prevState && routeReuseStrategy.shouldReuseRoute(curr.value, prevState.value.snapshot)) {\n        const value = prevState.value;\n        value._futureSnapshot = curr.value;\n        const children = createOrReuseChildren(routeReuseStrategy, curr, prevState);\n        return new TreeNode(value, children);\n    }\n    else {\n        if (routeReuseStrategy.shouldAttach(curr.value)) {\n            // retrieve an activated route that is used to be displayed, but is not currently displayed\n            const detachedRouteHandle = routeReuseStrategy.retrieve(curr.value);\n            if (detachedRouteHandle !== null) {\n                const tree = detachedRouteHandle.route;\n                tree.value._futureSnapshot = curr.value;\n                tree.children = curr.children.map(c => createNode(routeReuseStrategy, c));\n                return tree;\n            }\n        }\n        const value = createActivatedRoute(curr.value);\n        const children = curr.children.map(c => createNode(routeReuseStrategy, c));\n        return new TreeNode(value, children);\n    }\n}\nfunction createOrReuseChildren(routeReuseStrategy, curr, prevState) {\n    return curr.children.map(child => {\n        for (const p of prevState.children) {\n            if (routeReuseStrategy.shouldReuseRoute(child.value, p.value.snapshot)) {\n                return createNode(routeReuseStrategy, child, p);\n            }\n        }\n        return createNode(routeReuseStrategy, child);\n    });\n}\nfunction createActivatedRoute(c) {\n    return new ActivatedRoute(new BehaviorSubject(c.url), new BehaviorSubject(c.params), new BehaviorSubject(c.queryParams), new BehaviorSubject(c.fragment), new BehaviorSubject(c.data), c.outlet, c.component, c);\n}\n\nconst NAVIGATION_CANCELING_ERROR = 'ngNavigationCancelingError';\nfunction redirectingNavigationError(urlSerializer, redirect) {\n    const { redirectTo, navigationBehaviorOptions } = isUrlTree(redirect) ? { redirectTo: redirect, navigationBehaviorOptions: undefined } : redirect;\n    const error = navigationCancelingError(ngDevMode && `Redirecting to \"${urlSerializer.serialize(redirectTo)}\"`, 0 /* NavigationCancellationCode.Redirect */, redirect);\n    error.url = redirectTo;\n    error.navigationBehaviorOptions = navigationBehaviorOptions;\n    return error;\n}\nfunction navigationCancelingError(message, code, redirectUrl) {\n    const error = new Error('NavigationCancelingError: ' + (message || ''));\n    error[NAVIGATION_CANCELING_ERROR] = true;\n    error.cancellationCode = code;\n    if (redirectUrl) {\n        error.url = redirectUrl;\n    }\n    return error;\n}\nfunction isRedirectingNavigationCancelingError$1(error) {\n    return isNavigationCancelingError$1(error) && isUrlTree(error.url);\n}\nfunction isNavigationCancelingError$1(error) {\n    return error && error[NAVIGATION_CANCELING_ERROR];\n}\n\n/**\n * Store contextual information about a `RouterOutlet`\n *\n * @publicApi\n */\nclass OutletContext {\n    constructor() {\n        this.outlet = null;\n        this.route = null;\n        /**\n         * @deprecated Passing a resolver to retrieve a component factory is not required and is\n         *     deprecated since v14.\n         */\n        this.resolver = null;\n        this.injector = null;\n        this.children = new ChildrenOutletContexts();\n        this.attachRef = null;\n    }\n}\n/**\n * Store contextual information about the children (= nested) `RouterOutlet`\n *\n * @publicApi\n */\nclass ChildrenOutletContexts {\n    constructor() {\n        // contexts for child outlets, by name.\n        this.contexts = new Map();\n    }\n    /** Called when a `RouterOutlet` directive is instantiated */\n    onChildOutletCreated(childName, outlet) {\n        const context = this.getOrCreateContext(childName);\n        context.outlet = outlet;\n        this.contexts.set(childName, context);\n    }\n    /**\n     * Called when a `RouterOutlet` directive is destroyed.\n     * We need to keep the context as the outlet could be destroyed inside a NgIf and might be\n     * re-created later.\n     */\n    onChildOutletDestroyed(childName) {\n        const context = this.getContext(childName);\n        if (context) {\n            context.outlet = null;\n            context.attachRef = null;\n        }\n    }\n    /**\n     * Called when the corresponding route is deactivated during navigation.\n     * Because the component get destroyed, all children outlet are destroyed.\n     */\n    onOutletDeactivated() {\n        const contexts = this.contexts;\n        this.contexts = new Map();\n        return contexts;\n    }\n    onOutletReAttached(contexts) {\n        this.contexts = contexts;\n    }\n    getOrCreateContext(childName) {\n        let context = this.getContext(childName);\n        if (!context) {\n            context = new OutletContext();\n            this.contexts.set(childName, context);\n        }\n        return context;\n    }\n    getContext(childName) {\n        return this.contexts.get(childName) || null;\n    }\n}\nChildrenOutletContexts.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: ChildrenOutletContexts, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nChildrenOutletContexts.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: ChildrenOutletContexts, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: ChildrenOutletContexts, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }] });\n\nconst NG_DEV_MODE$8 = typeof ngDevMode === 'undefined' || ngDevMode;\n/**\n * @description\n *\n * Acts as a placeholder that Angular dynamically fills based on the current router state.\n *\n * Each outlet can have a unique name, determined by the optional `name` attribute.\n * The name cannot be set or changed dynamically. If not set, default value is \"primary\".\n *\n * ```\n * <router-outlet></router-outlet>\n * <router-outlet name='left'></router-outlet>\n * <router-outlet name='right'></router-outlet>\n * ```\n *\n * Named outlets can be the targets of secondary routes.\n * The `Route` object for a secondary route has an `outlet` property to identify the target outlet:\n *\n * `{path: <base-path>, component: <component>, outlet: <target_outlet_name>}`\n *\n * Using named outlets and secondary routes, you can target multiple outlets in\n * the same `RouterLink` directive.\n *\n * The router keeps track of separate branches in a navigation tree for each named outlet and\n * generates a representation of that tree in the URL.\n * The URL for a secondary route uses the following syntax to specify both the primary and secondary\n * routes at the same time:\n *\n * `http://base-path/primary-route-path(outlet-name:route-path)`\n *\n * A router outlet emits an activate event when a new component is instantiated,\n * deactivate event when a component is destroyed.\n * An attached event emits when the `RouteReuseStrategy` instructs the outlet to reattach the\n * subtree, and the detached event emits when the `RouteReuseStrategy` instructs the outlet to\n * detach the subtree.\n *\n * ```\n * <router-outlet\n *   (activate)='onActivate($event)'\n *   (deactivate)='onDeactivate($event)'\n *   (attach)='onAttach($event)'\n *   (detach)='onDetach($event)'></router-outlet>\n * ```\n *\n * @see [Routing tutorial](guide/router-tutorial-toh#named-outlets \"Example of a named\n * outlet and secondary route configuration\").\n * @see `RouterLink`\n * @see `Route`\n * @ngModule RouterModule\n *\n * @publicApi\n */\nclass RouterOutlet {\n    constructor() {\n        this.activated = null;\n        this._activatedRoute = null;\n        /**\n         * The name of the outlet\n         *\n         * @see [named outlets](guide/router-tutorial-toh#displaying-multiple-routes-in-named-outlets)\n         */\n        this.name = PRIMARY_OUTLET;\n        this.activateEvents = new EventEmitter();\n        this.deactivateEvents = new EventEmitter();\n        /**\n         * Emits an attached component instance when the `RouteReuseStrategy` instructs to re-attach a\n         * previously detached subtree.\n         **/\n        this.attachEvents = new EventEmitter();\n        /**\n         * Emits a detached component instance when the `RouteReuseStrategy` instructs to detach the\n         * subtree.\n         */\n        this.detachEvents = new EventEmitter();\n        this.parentContexts = inject(ChildrenOutletContexts);\n        this.location = inject(ViewContainerRef);\n        this.changeDetector = inject(ChangeDetectorRef);\n        this.environmentInjector = inject(EnvironmentInjector);\n    }\n    /** @nodoc */\n    ngOnChanges(changes) {\n        if (changes['name']) {\n            const { firstChange, previousValue } = changes['name'];\n            if (firstChange) {\n                // The first change is handled by ngOnInit. Because ngOnChanges doesn't get called when no\n                // input is set at all, we need to centrally handle the first change there.\n                return;\n            }\n            // unregister with the old name\n            if (this.isTrackedInParentContexts(previousValue)) {\n                this.deactivate();\n                this.parentContexts.onChildOutletDestroyed(previousValue);\n            }\n            // register the new name\n            this.initializeOutletWithName();\n        }\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        // Ensure that the registered outlet is this one before removing it on the context.\n        if (this.isTrackedInParentContexts(this.name)) {\n            this.parentContexts.onChildOutletDestroyed(this.name);\n        }\n    }\n    isTrackedInParentContexts(outletName) {\n        return this.parentContexts.getContext(outletName)?.outlet === this;\n    }\n    /** @nodoc */\n    ngOnInit() {\n        this.initializeOutletWithName();\n    }\n    initializeOutletWithName() {\n        this.parentContexts.onChildOutletCreated(this.name, this);\n        if (this.activated) {\n            return;\n        }\n        // If the outlet was not instantiated at the time the route got activated we need to populate\n        // the outlet when it is initialized (ie inside a NgIf)\n        const context = this.parentContexts.getContext(this.name);\n        if (context?.route) {\n            if (context.attachRef) {\n                // `attachRef` is populated when there is an existing component to mount\n                this.attach(context.attachRef, context.route);\n            }\n            else {\n                // otherwise the component defined in the configuration is created\n                this.activateWith(context.route, context.injector);\n            }\n        }\n    }\n    get isActivated() {\n        return !!this.activated;\n    }\n    /**\n     * @returns The currently activated component instance.\n     * @throws An error if the outlet is not activated.\n     */\n    get component() {\n        if (!this.activated)\n            throw new ɵRuntimeError(4012 /* RuntimeErrorCode.OUTLET_NOT_ACTIVATED */, NG_DEV_MODE$8 && 'Outlet is not activated');\n        return this.activated.instance;\n    }\n    get activatedRoute() {\n        if (!this.activated)\n            throw new ɵRuntimeError(4012 /* RuntimeErrorCode.OUTLET_NOT_ACTIVATED */, NG_DEV_MODE$8 && 'Outlet is not activated');\n        return this._activatedRoute;\n    }\n    get activatedRouteData() {\n        if (this._activatedRoute) {\n            return this._activatedRoute.snapshot.data;\n        }\n        return {};\n    }\n    /**\n     * Called when the `RouteReuseStrategy` instructs to detach the subtree\n     */\n    detach() {\n        if (!this.activated)\n            throw new ɵRuntimeError(4012 /* RuntimeErrorCode.OUTLET_NOT_ACTIVATED */, NG_DEV_MODE$8 && 'Outlet is not activated');\n        this.location.detach();\n        const cmp = this.activated;\n        this.activated = null;\n        this._activatedRoute = null;\n        this.detachEvents.emit(cmp.instance);\n        return cmp;\n    }\n    /**\n     * Called when the `RouteReuseStrategy` instructs to re-attach a previously detached subtree\n     */\n    attach(ref, activatedRoute) {\n        this.activated = ref;\n        this._activatedRoute = activatedRoute;\n        this.location.insert(ref.hostView);\n        this.attachEvents.emit(ref.instance);\n    }\n    deactivate() {\n        if (this.activated) {\n            const c = this.component;\n            this.activated.destroy();\n            this.activated = null;\n            this._activatedRoute = null;\n            this.deactivateEvents.emit(c);\n        }\n    }\n    activateWith(activatedRoute, resolverOrInjector) {\n        if (this.isActivated) {\n            throw new ɵRuntimeError(4013 /* RuntimeErrorCode.OUTLET_ALREADY_ACTIVATED */, NG_DEV_MODE$8 && 'Cannot activate an already activated outlet');\n        }\n        this._activatedRoute = activatedRoute;\n        const location = this.location;\n        const snapshot = activatedRoute.snapshot;\n        const component = snapshot.component;\n        const childContexts = this.parentContexts.getOrCreateContext(this.name).children;\n        const injector = new OutletInjector(activatedRoute, childContexts, location.injector);\n        if (resolverOrInjector && isComponentFactoryResolver(resolverOrInjector)) {\n            const factory = resolverOrInjector.resolveComponentFactory(component);\n            this.activated = location.createComponent(factory, location.length, injector);\n        }\n        else {\n            const environmentInjector = resolverOrInjector ?? this.environmentInjector;\n            this.activated = location.createComponent(component, { index: location.length, injector, environmentInjector });\n        }\n        // Calling `markForCheck` to make sure we will run the change detection when the\n        // `RouterOutlet` is inside a `ChangeDetectionStrategy.OnPush` component.\n        this.changeDetector.markForCheck();\n        this.activateEvents.emit(this.activated.instance);\n    }\n}\nRouterOutlet.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterOutlet, deps: [], target: i0.ɵɵFactoryTarget.Directive });\nRouterOutlet.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.9\", type: RouterOutlet, isStandalone: true, selector: \"router-outlet\", inputs: { name: \"name\" }, outputs: { activateEvents: \"activate\", deactivateEvents: \"deactivate\", attachEvents: \"attach\", detachEvents: \"detach\" }, exportAs: [\"outlet\"], usesOnChanges: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterOutlet, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: 'router-outlet',\n                    exportAs: 'outlet',\n                    standalone: true,\n                }]\n        }], propDecorators: { name: [{\n                type: Input\n            }], activateEvents: [{\n                type: Output,\n                args: ['activate']\n            }], deactivateEvents: [{\n                type: Output,\n                args: ['deactivate']\n            }], attachEvents: [{\n                type: Output,\n                args: ['attach']\n            }], detachEvents: [{\n                type: Output,\n                args: ['detach']\n            }] } });\nclass OutletInjector {\n    constructor(route, childContexts, parent) {\n        this.route = route;\n        this.childContexts = childContexts;\n        this.parent = parent;\n    }\n    get(token, notFoundValue) {\n        if (token === ActivatedRoute) {\n            return this.route;\n        }\n        if (token === ChildrenOutletContexts) {\n            return this.childContexts;\n        }\n        return this.parent.get(token, notFoundValue);\n    }\n}\nfunction isComponentFactoryResolver(item) {\n    return !!item.resolveComponentFactory;\n}\n\n/**\n * This component is used internally within the router to be a placeholder when an empty\n * router-outlet is needed. For example, with a config such as:\n *\n * `{path: 'parent', outlet: 'nav', children: [...]}`\n *\n * In order to render, there needs to be a component on this config, which will default\n * to this `EmptyOutletComponent`.\n */\nclass ɵEmptyOutletComponent {\n}\nɵEmptyOutletComponent.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: ɵEmptyOutletComponent, deps: [], target: i0.ɵɵFactoryTarget.Component });\nɵEmptyOutletComponent.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: \"14.0.0\", version: \"15.2.9\", type: ɵEmptyOutletComponent, isStandalone: true, selector: \"ng-component\", ngImport: i0, template: `<router-outlet></router-outlet>`, isInline: true, dependencies: [{ kind: \"directive\", type: RouterOutlet, selector: \"router-outlet\", inputs: [\"name\"], outputs: [\"activate\", \"deactivate\", \"attach\", \"detach\"], exportAs: [\"outlet\"] }] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: ɵEmptyOutletComponent, decorators: [{\n            type: Component,\n            args: [{\n                    template: `<router-outlet></router-outlet>`,\n                    imports: [RouterOutlet],\n                    standalone: true,\n                }]\n        }] });\n\n/**\n * Creates an `EnvironmentInjector` if the `Route` has providers and one does not already exist\n * and returns the injector. Otherwise, if the `Route` does not have `providers`, returns the\n * `currentInjector`.\n *\n * @param route The route that might have providers\n * @param currentInjector The parent injector of the `Route`\n */\nfunction getOrCreateRouteInjectorIfNeeded(route, currentInjector) {\n    if (route.providers && !route._injector) {\n        route._injector =\n            createEnvironmentInjector(route.providers, currentInjector, `Route: ${route.path}`);\n    }\n    return route._injector ?? currentInjector;\n}\nfunction getLoadedRoutes(route) {\n    return route._loadedRoutes;\n}\nfunction getLoadedInjector(route) {\n    return route._loadedInjector;\n}\nfunction getLoadedComponent(route) {\n    return route._loadedComponent;\n}\nfunction getProvidersInjector(route) {\n    return route._injector;\n}\nfunction validateConfig(config, parentPath = '', requireStandaloneComponents = false) {\n    // forEach doesn't iterate undefined values\n    for (let i = 0; i < config.length; i++) {\n        const route = config[i];\n        const fullPath = getFullPath(parentPath, route);\n        validateNode(route, fullPath, requireStandaloneComponents);\n    }\n}\nfunction assertStandalone(fullPath, component) {\n    if (component && ɵisNgModule(component)) {\n        throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `Invalid configuration of route '${fullPath}'. You are using 'loadComponent' with a module, ` +\n            `but it must be used with standalone components. Use 'loadChildren' instead.`);\n    }\n    else if (component && !isStandalone(component)) {\n        throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `Invalid configuration of route '${fullPath}'. The component must be standalone.`);\n    }\n}\nfunction validateNode(route, fullPath, requireStandaloneComponents) {\n    if (typeof ngDevMode === 'undefined' || ngDevMode) {\n        if (!route) {\n            throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `\n      Invalid configuration of route '${fullPath}': Encountered undefined route.\n      The reason might be an extra comma.\n\n      Example:\n      const routes: Routes = [\n        { path: '', redirectTo: '/dashboard', pathMatch: 'full' },\n        { path: 'dashboard',  component: DashboardComponent },, << two commas\n        { path: 'detail/:id', component: HeroDetailComponent }\n      ];\n    `);\n        }\n        if (Array.isArray(route)) {\n            throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `Invalid configuration of route '${fullPath}': Array cannot be specified`);\n        }\n        if (!route.redirectTo && !route.component && !route.loadComponent && !route.children &&\n            !route.loadChildren && (route.outlet && route.outlet !== PRIMARY_OUTLET)) {\n            throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `Invalid configuration of route '${fullPath}': a componentless route without children or loadChildren cannot have a named outlet set`);\n        }\n        if (route.redirectTo && route.children) {\n            throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `Invalid configuration of route '${fullPath}': redirectTo and children cannot be used together`);\n        }\n        if (route.redirectTo && route.loadChildren) {\n            throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `Invalid configuration of route '${fullPath}': redirectTo and loadChildren cannot be used together`);\n        }\n        if (route.children && route.loadChildren) {\n            throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `Invalid configuration of route '${fullPath}': children and loadChildren cannot be used together`);\n        }\n        if (route.redirectTo && (route.component || route.loadComponent)) {\n            throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `Invalid configuration of route '${fullPath}': redirectTo and component/loadComponent cannot be used together`);\n        }\n        if (route.component && route.loadComponent) {\n            throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `Invalid configuration of route '${fullPath}': component and loadComponent cannot be used together`);\n        }\n        if (route.redirectTo && route.canActivate) {\n            throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `Invalid configuration of route '${fullPath}': redirectTo and canActivate cannot be used together. Redirects happen before activation ` +\n                `so canActivate will never be executed.`);\n        }\n        if (route.path && route.matcher) {\n            throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `Invalid configuration of route '${fullPath}': path and matcher cannot be used together`);\n        }\n        if (route.redirectTo === void 0 && !route.component && !route.loadComponent &&\n            !route.children && !route.loadChildren) {\n            throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `Invalid configuration of route '${fullPath}'. One of the following must be provided: component, loadComponent, redirectTo, children or loadChildren`);\n        }\n        if (route.path === void 0 && route.matcher === void 0) {\n            throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `Invalid configuration of route '${fullPath}': routes must have either a path or a matcher specified`);\n        }\n        if (typeof route.path === 'string' && route.path.charAt(0) === '/') {\n            throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `Invalid configuration of route '${fullPath}': path cannot start with a slash`);\n        }\n        if (route.path === '' && route.redirectTo !== void 0 && route.pathMatch === void 0) {\n            const exp = `The default value of 'pathMatch' is 'prefix', but often the intent is to use 'full'.`;\n            throw new ɵRuntimeError(4014 /* RuntimeErrorCode.INVALID_ROUTE_CONFIG */, `Invalid configuration of route '{path: \"${fullPath}\", redirectTo: \"${route.redirectTo}\"}': please provide 'pathMatch'. ${exp}`);\n        }\n        if (requireStandaloneComponents) {\n            assertStandalone(fullPath, route.component);\n        }\n    }\n    if (route.children) {\n        validateConfig(route.children, fullPath, requireStandaloneComponents);\n    }\n}\nfunction getFullPath(parentPath, currentRoute) {\n    if (!currentRoute) {\n        return parentPath;\n    }\n    if (!parentPath && !currentRoute.path) {\n        return '';\n    }\n    else if (parentPath && !currentRoute.path) {\n        return `${parentPath}/`;\n    }\n    else if (!parentPath && currentRoute.path) {\n        return currentRoute.path;\n    }\n    else {\n        return `${parentPath}/${currentRoute.path}`;\n    }\n}\n/**\n * Makes a copy of the config and adds any default required properties.\n */\nfunction standardizeConfig(r) {\n    const children = r.children && r.children.map(standardizeConfig);\n    const c = children ? { ...r, children } : { ...r };\n    if ((!c.component && !c.loadComponent) && (children || c.loadChildren) &&\n        (c.outlet && c.outlet !== PRIMARY_OUTLET)) {\n        c.component = ɵEmptyOutletComponent;\n    }\n    return c;\n}\n/** Returns the `route.outlet` or PRIMARY_OUTLET if none exists. */\nfunction getOutlet(route) {\n    return route.outlet || PRIMARY_OUTLET;\n}\n/**\n * Sorts the `routes` such that the ones with an outlet matching `outletName` come first.\n * The order of the configs is otherwise preserved.\n */\nfunction sortByMatchingOutlets(routes, outletName) {\n    const sortedConfig = routes.filter(r => getOutlet(r) === outletName);\n    sortedConfig.push(...routes.filter(r => getOutlet(r) !== outletName));\n    return sortedConfig;\n}\n/**\n * Gets the first injector in the snapshot's parent tree.\n *\n * If the `Route` has a static list of providers, the returned injector will be the one created from\n * those. If it does not exist, the returned injector may come from the parents, which may be from a\n * loaded config or their static providers.\n *\n * Returns `null` if there is neither this nor any parents have a stored injector.\n *\n * Generally used for retrieving the injector to use for getting tokens for guards/resolvers and\n * also used for getting the correct injector to use for creating components.\n */\nfunction getClosestRouteInjector(snapshot) {\n    if (!snapshot)\n        return null;\n    // If the current route has its own injector, which is created from the static providers on the\n    // route itself, we should use that. Otherwise, we start at the parent since we do not want to\n    // include the lazy loaded injector from this route.\n    if (snapshot.routeConfig?._injector) {\n        return snapshot.routeConfig._injector;\n    }\n    for (let s = snapshot.parent; s; s = s.parent) {\n        const route = s.routeConfig;\n        // Note that the order here is important. `_loadedInjector` stored on the route with\n        // `loadChildren: () => NgModule` so it applies to child routes with priority. The `_injector`\n        // is created from the static providers on that parent route, so it applies to the children as\n        // well, but only if there is no lazy loaded NgModuleRef injector.\n        if (route?._loadedInjector)\n            return route._loadedInjector;\n        if (route?._injector)\n            return route._injector;\n    }\n    return null;\n}\n\nconst activateRoutes = (rootContexts, routeReuseStrategy, forwardEvent) => map(t => {\n    new ActivateRoutes(routeReuseStrategy, t.targetRouterState, t.currentRouterState, forwardEvent)\n        .activate(rootContexts);\n    return t;\n});\nclass ActivateRoutes {\n    constructor(routeReuseStrategy, futureState, currState, forwardEvent) {\n        this.routeReuseStrategy = routeReuseStrategy;\n        this.futureState = futureState;\n        this.currState = currState;\n        this.forwardEvent = forwardEvent;\n    }\n    activate(parentContexts) {\n        const futureRoot = this.futureState._root;\n        const currRoot = this.currState ? this.currState._root : null;\n        this.deactivateChildRoutes(futureRoot, currRoot, parentContexts);\n        advanceActivatedRoute(this.futureState.root);\n        this.activateChildRoutes(futureRoot, currRoot, parentContexts);\n    }\n    // De-activate the child route that are not re-used for the future state\n    deactivateChildRoutes(futureNode, currNode, contexts) {\n        const children = nodeChildrenAsMap(currNode);\n        // Recurse on the routes active in the future state to de-activate deeper children\n        futureNode.children.forEach(futureChild => {\n            const childOutletName = futureChild.value.outlet;\n            this.deactivateRoutes(futureChild, children[childOutletName], contexts);\n            delete children[childOutletName];\n        });\n        // De-activate the routes that will not be re-used\n        forEach(children, (v, childName) => {\n            this.deactivateRouteAndItsChildren(v, contexts);\n        });\n    }\n    deactivateRoutes(futureNode, currNode, parentContext) {\n        const future = futureNode.value;\n        const curr = currNode ? currNode.value : null;\n        if (future === curr) {\n            // Reusing the node, check to see if the children need to be de-activated\n            if (future.component) {\n                // If we have a normal route, we need to go through an outlet.\n                const context = parentContext.getContext(future.outlet);\n                if (context) {\n                    this.deactivateChildRoutes(futureNode, currNode, context.children);\n                }\n            }\n            else {\n                // if we have a componentless route, we recurse but keep the same outlet map.\n                this.deactivateChildRoutes(futureNode, currNode, parentContext);\n            }\n        }\n        else {\n            if (curr) {\n                // Deactivate the current route which will not be re-used\n                this.deactivateRouteAndItsChildren(currNode, parentContext);\n            }\n        }\n    }\n    deactivateRouteAndItsChildren(route, parentContexts) {\n        // If there is no component, the Route is never attached to an outlet (because there is no\n        // component to attach).\n        if (route.value.component && this.routeReuseStrategy.shouldDetach(route.value.snapshot)) {\n            this.detachAndStoreRouteSubtree(route, parentContexts);\n        }\n        else {\n            this.deactivateRouteAndOutlet(route, parentContexts);\n        }\n    }\n    detachAndStoreRouteSubtree(route, parentContexts) {\n        const context = parentContexts.getContext(route.value.outlet);\n        const contexts = context && route.value.component ? context.children : parentContexts;\n        const children = nodeChildrenAsMap(route);\n        for (const childOutlet of Object.keys(children)) {\n            this.deactivateRouteAndItsChildren(children[childOutlet], contexts);\n        }\n        if (context && context.outlet) {\n            const componentRef = context.outlet.detach();\n            const contexts = context.children.onOutletDeactivated();\n            this.routeReuseStrategy.store(route.value.snapshot, { componentRef, route, contexts });\n        }\n    }\n    deactivateRouteAndOutlet(route, parentContexts) {\n        const context = parentContexts.getContext(route.value.outlet);\n        // The context could be `null` if we are on a componentless route but there may still be\n        // children that need deactivating.\n        const contexts = context && route.value.component ? context.children : parentContexts;\n        const children = nodeChildrenAsMap(route);\n        for (const childOutlet of Object.keys(children)) {\n            this.deactivateRouteAndItsChildren(children[childOutlet], contexts);\n        }\n        if (context) {\n            if (context.outlet) {\n                // Destroy the component\n                context.outlet.deactivate();\n                // Destroy the contexts for all the outlets that were in the component\n                context.children.onOutletDeactivated();\n            }\n            // Clear the information about the attached component on the context but keep the reference to\n            // the outlet. Clear even if outlet was not yet activated to avoid activating later with old\n            // info\n            context.attachRef = null;\n            context.resolver = null;\n            context.route = null;\n        }\n    }\n    activateChildRoutes(futureNode, currNode, contexts) {\n        const children = nodeChildrenAsMap(currNode);\n        futureNode.children.forEach(c => {\n            this.activateRoutes(c, children[c.value.outlet], contexts);\n            this.forwardEvent(new ActivationEnd(c.value.snapshot));\n        });\n        if (futureNode.children.length) {\n            this.forwardEvent(new ChildActivationEnd(futureNode.value.snapshot));\n        }\n    }\n    activateRoutes(futureNode, currNode, parentContexts) {\n        const future = futureNode.value;\n        const curr = currNode ? currNode.value : null;\n        advanceActivatedRoute(future);\n        // reusing the node\n        if (future === curr) {\n            if (future.component) {\n                // If we have a normal route, we need to go through an outlet.\n                const context = parentContexts.getOrCreateContext(future.outlet);\n                this.activateChildRoutes(futureNode, currNode, context.children);\n            }\n            else {\n                // if we have a componentless route, we recurse but keep the same outlet map.\n                this.activateChildRoutes(futureNode, currNode, parentContexts);\n            }\n        }\n        else {\n            if (future.component) {\n                // if we have a normal route, we need to place the component into the outlet and recurse.\n                const context = parentContexts.getOrCreateContext(future.outlet);\n                if (this.routeReuseStrategy.shouldAttach(future.snapshot)) {\n                    const stored = this.routeReuseStrategy.retrieve(future.snapshot);\n                    this.routeReuseStrategy.store(future.snapshot, null);\n                    context.children.onOutletReAttached(stored.contexts);\n                    context.attachRef = stored.componentRef;\n                    context.route = stored.route.value;\n                    if (context.outlet) {\n                        // Attach right away when the outlet has already been instantiated\n                        // Otherwise attach from `RouterOutlet.ngOnInit` when it is instantiated\n                        context.outlet.attach(stored.componentRef, stored.route.value);\n                    }\n                    advanceActivatedRoute(stored.route.value);\n                    this.activateChildRoutes(futureNode, null, context.children);\n                }\n                else {\n                    const injector = getClosestRouteInjector(future.snapshot);\n                    const cmpFactoryResolver = injector?.get(ComponentFactoryResolver) ?? null;\n                    context.attachRef = null;\n                    context.route = future;\n                    context.resolver = cmpFactoryResolver;\n                    context.injector = injector;\n                    if (context.outlet) {\n                        // Activate the outlet when it has already been instantiated\n                        // Otherwise it will get activated from its `ngOnInit` when instantiated\n                        context.outlet.activateWith(future, context.injector);\n                    }\n                    this.activateChildRoutes(futureNode, null, context.children);\n                }\n            }\n            else {\n                // if we have a componentless route, we recurse but keep the same outlet map.\n                this.activateChildRoutes(futureNode, null, parentContexts);\n            }\n        }\n    }\n}\n\nclass CanActivate {\n    constructor(path) {\n        this.path = path;\n        this.route = this.path[this.path.length - 1];\n    }\n}\nclass CanDeactivate {\n    constructor(component, route) {\n        this.component = component;\n        this.route = route;\n    }\n}\nfunction getAllRouteGuards(future, curr, parentContexts) {\n    const futureRoot = future._root;\n    const currRoot = curr ? curr._root : null;\n    return getChildRouteGuards(futureRoot, currRoot, parentContexts, [futureRoot.value]);\n}\nfunction getCanActivateChild(p) {\n    const canActivateChild = p.routeConfig ? p.routeConfig.canActivateChild : null;\n    if (!canActivateChild || canActivateChild.length === 0)\n        return null;\n    return { node: p, guards: canActivateChild };\n}\nfunction getTokenOrFunctionIdentity(tokenOrFunction, injector) {\n    const NOT_FOUND = Symbol();\n    const result = injector.get(tokenOrFunction, NOT_FOUND);\n    if (result === NOT_FOUND) {\n        if (typeof tokenOrFunction === 'function' && !ɵisInjectable(tokenOrFunction)) {\n            // We think the token is just a function so return it as-is\n            return tokenOrFunction;\n        }\n        else {\n            // This will throw the not found error\n            return injector.get(tokenOrFunction);\n        }\n    }\n    return result;\n}\nfunction getChildRouteGuards(futureNode, currNode, contexts, futurePath, checks = {\n    canDeactivateChecks: [],\n    canActivateChecks: []\n}) {\n    const prevChildren = nodeChildrenAsMap(currNode);\n    // Process the children of the future route\n    futureNode.children.forEach(c => {\n        getRouteGuards(c, prevChildren[c.value.outlet], contexts, futurePath.concat([c.value]), checks);\n        delete prevChildren[c.value.outlet];\n    });\n    // Process any children left from the current route (not active for the future route)\n    forEach(prevChildren, (v, k) => deactivateRouteAndItsChildren(v, contexts.getContext(k), checks));\n    return checks;\n}\nfunction getRouteGuards(futureNode, currNode, parentContexts, futurePath, checks = {\n    canDeactivateChecks: [],\n    canActivateChecks: []\n}) {\n    const future = futureNode.value;\n    const curr = currNode ? currNode.value : null;\n    const context = parentContexts ? parentContexts.getContext(futureNode.value.outlet) : null;\n    // reusing the node\n    if (curr && future.routeConfig === curr.routeConfig) {\n        const shouldRun = shouldRunGuardsAndResolvers(curr, future, future.routeConfig.runGuardsAndResolvers);\n        if (shouldRun) {\n            checks.canActivateChecks.push(new CanActivate(futurePath));\n        }\n        else {\n            // we need to set the data\n            future.data = curr.data;\n            future._resolvedData = curr._resolvedData;\n        }\n        // If we have a component, we need to go through an outlet.\n        if (future.component) {\n            getChildRouteGuards(futureNode, currNode, context ? context.children : null, futurePath, checks);\n            // if we have a componentless route, we recurse but keep the same outlet map.\n        }\n        else {\n            getChildRouteGuards(futureNode, currNode, parentContexts, futurePath, checks);\n        }\n        if (shouldRun && context && context.outlet && context.outlet.isActivated) {\n            checks.canDeactivateChecks.push(new CanDeactivate(context.outlet.component, curr));\n        }\n    }\n    else {\n        if (curr) {\n            deactivateRouteAndItsChildren(currNode, context, checks);\n        }\n        checks.canActivateChecks.push(new CanActivate(futurePath));\n        // If we have a component, we need to go through an outlet.\n        if (future.component) {\n            getChildRouteGuards(futureNode, null, context ? context.children : null, futurePath, checks);\n            // if we have a componentless route, we recurse but keep the same outlet map.\n        }\n        else {\n            getChildRouteGuards(futureNode, null, parentContexts, futurePath, checks);\n        }\n    }\n    return checks;\n}\nfunction shouldRunGuardsAndResolvers(curr, future, mode) {\n    if (typeof mode === 'function') {\n        return mode(curr, future);\n    }\n    switch (mode) {\n        case 'pathParamsChange':\n            return !equalPath(curr.url, future.url);\n        case 'pathParamsOrQueryParamsChange':\n            return !equalPath(curr.url, future.url) ||\n                !shallowEqual(curr.queryParams, future.queryParams);\n        case 'always':\n            return true;\n        case 'paramsOrQueryParamsChange':\n            return !equalParamsAndUrlSegments(curr, future) ||\n                !shallowEqual(curr.queryParams, future.queryParams);\n        case 'paramsChange':\n        default:\n            return !equalParamsAndUrlSegments(curr, future);\n    }\n}\nfunction deactivateRouteAndItsChildren(route, context, checks) {\n    const children = nodeChildrenAsMap(route);\n    const r = route.value;\n    forEach(children, (node, childName) => {\n        if (!r.component) {\n            deactivateRouteAndItsChildren(node, context, checks);\n        }\n        else if (context) {\n            deactivateRouteAndItsChildren(node, context.children.getContext(childName), checks);\n        }\n        else {\n            deactivateRouteAndItsChildren(node, null, checks);\n        }\n    });\n    if (!r.component) {\n        checks.canDeactivateChecks.push(new CanDeactivate(null, r));\n    }\n    else if (context && context.outlet && context.outlet.isActivated) {\n        checks.canDeactivateChecks.push(new CanDeactivate(context.outlet.component, r));\n    }\n    else {\n        checks.canDeactivateChecks.push(new CanDeactivate(null, r));\n    }\n}\n\n/**\n * Simple function check, but generic so type inference will flow. Example:\n *\n * function product(a: number, b: number) {\n *   return a * b;\n * }\n *\n * if (isFunction<product>(fn)) {\n *   return fn(1, 2);\n * } else {\n *   throw \"Must provide the `product` function\";\n * }\n */\nfunction isFunction(v) {\n    return typeof v === 'function';\n}\nfunction isBoolean(v) {\n    return typeof v === 'boolean';\n}\nfunction isCanLoad(guard) {\n    return guard && isFunction(guard.canLoad);\n}\nfunction isCanActivate(guard) {\n    return guard && isFunction(guard.canActivate);\n}\nfunction isCanActivateChild(guard) {\n    return guard && isFunction(guard.canActivateChild);\n}\nfunction isCanDeactivate(guard) {\n    return guard && isFunction(guard.canDeactivate);\n}\nfunction isCanMatch(guard) {\n    return guard && isFunction(guard.canMatch);\n}\nfunction isRedirectingNavigationCancelingError(error) {\n    return isNavigationCancelingError(error) && isUrlTree(error.url);\n}\nfunction isNavigationCancelingError(error) {\n    return error && error[NAVIGATION_CANCELING_ERROR];\n}\nfunction isEmptyError(e) {\n    return e instanceof EmptyError || e?.name === 'EmptyError';\n}\n\nconst INITIAL_VALUE = Symbol('INITIAL_VALUE');\nfunction prioritizedGuardValue() {\n    return switchMap(obs => {\n        return combineLatest(obs.map(o => o.pipe(take(1), startWith(INITIAL_VALUE))))\n            .pipe(map((results) => {\n            for (const result of results) {\n                if (result === true) {\n                    // If result is true, check the next one\n                    continue;\n                }\n                else if (result === INITIAL_VALUE) {\n                    // If guard has not finished, we need to stop processing.\n                    return INITIAL_VALUE;\n                }\n                else if (result === false || result instanceof UrlTree) {\n                    // Result finished and was not true. Return the result.\n                    // Note that we only allow false/UrlTree. Other values are considered invalid and\n                    // ignored.\n                    return result;\n                }\n            }\n            // Everything resolved to true. Return true.\n            return true;\n        }), filter((item) => item !== INITIAL_VALUE), take(1));\n    });\n}\n\nfunction checkGuards(injector, forwardEvent) {\n    return mergeMap(t => {\n        const { targetSnapshot, currentSnapshot, guards: { canActivateChecks, canDeactivateChecks } } = t;\n        if (canDeactivateChecks.length === 0 && canActivateChecks.length === 0) {\n            return of({ ...t, guardsResult: true });\n        }\n        return runCanDeactivateChecks(canDeactivateChecks, targetSnapshot, currentSnapshot, injector)\n            .pipe(mergeMap(canDeactivate => {\n            return canDeactivate && isBoolean(canDeactivate) ?\n                runCanActivateChecks(targetSnapshot, canActivateChecks, injector, forwardEvent) :\n                of(canDeactivate);\n        }), map(guardsResult => ({ ...t, guardsResult })));\n    });\n}\nfunction runCanDeactivateChecks(checks, futureRSS, currRSS, injector) {\n    return from(checks).pipe(mergeMap(check => runCanDeactivate(check.component, check.route, currRSS, futureRSS, injector)), first(result => {\n        return result !== true;\n    }, true));\n}\nfunction runCanActivateChecks(futureSnapshot, checks, injector, forwardEvent) {\n    return from(checks).pipe(concatMap((check) => {\n        return concat(fireChildActivationStart(check.route.parent, forwardEvent), fireActivationStart(check.route, forwardEvent), runCanActivateChild(futureSnapshot, check.path, injector), runCanActivate(futureSnapshot, check.route, injector));\n    }), first(result => {\n        return result !== true;\n    }, true));\n}\n/**\n * This should fire off `ActivationStart` events for each route being activated at this\n * level.\n * In other words, if you're activating `a` and `b` below, `path` will contain the\n * `ActivatedRouteSnapshot`s for both and we will fire `ActivationStart` for both. Always\n * return\n * `true` so checks continue to run.\n */\nfunction fireActivationStart(snapshot, forwardEvent) {\n    if (snapshot !== null && forwardEvent) {\n        forwardEvent(new ActivationStart(snapshot));\n    }\n    return of(true);\n}\n/**\n * This should fire off `ChildActivationStart` events for each route being activated at this\n * level.\n * In other words, if you're activating `a` and `b` below, `path` will contain the\n * `ActivatedRouteSnapshot`s for both and we will fire `ChildActivationStart` for both. Always\n * return\n * `true` so checks continue to run.\n */\nfunction fireChildActivationStart(snapshot, forwardEvent) {\n    if (snapshot !== null && forwardEvent) {\n        forwardEvent(new ChildActivationStart(snapshot));\n    }\n    return of(true);\n}\nfunction runCanActivate(futureRSS, futureARS, injector) {\n    const canActivate = futureARS.routeConfig ? futureARS.routeConfig.canActivate : null;\n    if (!canActivate || canActivate.length === 0)\n        return of(true);\n    const canActivateObservables = canActivate.map((canActivate) => {\n        return defer(() => {\n            const closestInjector = getClosestRouteInjector(futureARS) ?? injector;\n            const guard = getTokenOrFunctionIdentity(canActivate, closestInjector);\n            const guardVal = isCanActivate(guard) ?\n                guard.canActivate(futureARS, futureRSS) :\n                closestInjector.runInContext(() => guard(futureARS, futureRSS));\n            return wrapIntoObservable(guardVal).pipe(first());\n        });\n    });\n    return of(canActivateObservables).pipe(prioritizedGuardValue());\n}\nfunction runCanActivateChild(futureRSS, path, injector) {\n    const futureARS = path[path.length - 1];\n    const canActivateChildGuards = path.slice(0, path.length - 1)\n        .reverse()\n        .map(p => getCanActivateChild(p))\n        .filter(_ => _ !== null);\n    const canActivateChildGuardsMapped = canActivateChildGuards.map((d) => {\n        return defer(() => {\n            const guardsMapped = d.guards.map((canActivateChild) => {\n                const closestInjector = getClosestRouteInjector(d.node) ?? injector;\n                const guard = getTokenOrFunctionIdentity(canActivateChild, closestInjector);\n                const guardVal = isCanActivateChild(guard) ?\n                    guard.canActivateChild(futureARS, futureRSS) :\n                    closestInjector.runInContext(() => guard(futureARS, futureRSS));\n                return wrapIntoObservable(guardVal).pipe(first());\n            });\n            return of(guardsMapped).pipe(prioritizedGuardValue());\n        });\n    });\n    return of(canActivateChildGuardsMapped).pipe(prioritizedGuardValue());\n}\nfunction runCanDeactivate(component, currARS, currRSS, futureRSS, injector) {\n    const canDeactivate = currARS && currARS.routeConfig ? currARS.routeConfig.canDeactivate : null;\n    if (!canDeactivate || canDeactivate.length === 0)\n        return of(true);\n    const canDeactivateObservables = canDeactivate.map((c) => {\n        const closestInjector = getClosestRouteInjector(currARS) ?? injector;\n        const guard = getTokenOrFunctionIdentity(c, closestInjector);\n        const guardVal = isCanDeactivate(guard) ?\n            guard.canDeactivate(component, currARS, currRSS, futureRSS) :\n            closestInjector.runInContext(() => guard(component, currARS, currRSS, futureRSS));\n        return wrapIntoObservable(guardVal).pipe(first());\n    });\n    return of(canDeactivateObservables).pipe(prioritizedGuardValue());\n}\nfunction runCanLoadGuards(injector, route, segments, urlSerializer) {\n    const canLoad = route.canLoad;\n    if (canLoad === undefined || canLoad.length === 0) {\n        return of(true);\n    }\n    const canLoadObservables = canLoad.map((injectionToken) => {\n        const guard = getTokenOrFunctionIdentity(injectionToken, injector);\n        const guardVal = isCanLoad(guard) ?\n            guard.canLoad(route, segments) :\n            injector.runInContext(() => guard(route, segments));\n        return wrapIntoObservable(guardVal);\n    });\n    return of(canLoadObservables)\n        .pipe(prioritizedGuardValue(), redirectIfUrlTree(urlSerializer));\n}\nfunction redirectIfUrlTree(urlSerializer) {\n    return pipe(tap((result) => {\n        if (!isUrlTree(result))\n            return;\n        throw redirectingNavigationError(urlSerializer, result);\n    }), map(result => result === true));\n}\nfunction runCanMatchGuards(injector, route, segments, urlSerializer) {\n    const canMatch = route.canMatch;\n    if (!canMatch || canMatch.length === 0)\n        return of(true);\n    const canMatchObservables = canMatch.map(injectionToken => {\n        const guard = getTokenOrFunctionIdentity(injectionToken, injector);\n        const guardVal = isCanMatch(guard) ?\n            guard.canMatch(route, segments) :\n            injector.runInContext(() => guard(route, segments));\n        return wrapIntoObservable(guardVal);\n    });\n    return of(canMatchObservables)\n        .pipe(prioritizedGuardValue(), redirectIfUrlTree(urlSerializer));\n}\n\nconst noMatch$1 = {\n    matched: false,\n    consumedSegments: [],\n    remainingSegments: [],\n    parameters: {},\n    positionalParamSegments: {}\n};\nfunction matchWithChecks(segmentGroup, route, segments, injector, urlSerializer) {\n    const result = match(segmentGroup, route, segments);\n    if (!result.matched) {\n        return of(result);\n    }\n    // Only create the Route's `EnvironmentInjector` if it matches the attempted\n    // navigation\n    injector = getOrCreateRouteInjectorIfNeeded(route, injector);\n    return runCanMatchGuards(injector, route, segments, urlSerializer)\n        .pipe(map((v) => v === true ? result : { ...noMatch$1 }));\n}\nfunction match(segmentGroup, route, segments) {\n    if (route.path === '') {\n        if (route.pathMatch === 'full' && (segmentGroup.hasChildren() || segments.length > 0)) {\n            return { ...noMatch$1 };\n        }\n        return {\n            matched: true,\n            consumedSegments: [],\n            remainingSegments: segments,\n            parameters: {},\n            positionalParamSegments: {}\n        };\n    }\n    const matcher = route.matcher || defaultUrlMatcher;\n    const res = matcher(segments, segmentGroup, route);\n    if (!res)\n        return { ...noMatch$1 };\n    const posParams = {};\n    forEach(res.posParams, (v, k) => {\n        posParams[k] = v.path;\n    });\n    const parameters = res.consumed.length > 0 ?\n        { ...posParams, ...res.consumed[res.consumed.length - 1].parameters } :\n        posParams;\n    return {\n        matched: true,\n        consumedSegments: res.consumed,\n        remainingSegments: segments.slice(res.consumed.length),\n        // TODO(atscott): investigate combining parameters and positionalParamSegments\n        parameters,\n        positionalParamSegments: res.posParams ?? {}\n    };\n}\nfunction split(segmentGroup, consumedSegments, slicedSegments, config) {\n    if (slicedSegments.length > 0 &&\n        containsEmptyPathMatchesWithNamedOutlets(segmentGroup, slicedSegments, config)) {\n        const s = new UrlSegmentGroup(consumedSegments, createChildrenForEmptyPaths(segmentGroup, consumedSegments, config, new UrlSegmentGroup(slicedSegments, segmentGroup.children)));\n        s._sourceSegment = segmentGroup;\n        s._segmentIndexShift = consumedSegments.length;\n        return { segmentGroup: s, slicedSegments: [] };\n    }\n    if (slicedSegments.length === 0 &&\n        containsEmptyPathMatches(segmentGroup, slicedSegments, config)) {\n        const s = new UrlSegmentGroup(segmentGroup.segments, addEmptyPathsToChildrenIfNeeded(segmentGroup, consumedSegments, slicedSegments, config, segmentGroup.children));\n        s._sourceSegment = segmentGroup;\n        s._segmentIndexShift = consumedSegments.length;\n        return { segmentGroup: s, slicedSegments };\n    }\n    const s = new UrlSegmentGroup(segmentGroup.segments, segmentGroup.children);\n    s._sourceSegment = segmentGroup;\n    s._segmentIndexShift = consumedSegments.length;\n    return { segmentGroup: s, slicedSegments };\n}\nfunction addEmptyPathsToChildrenIfNeeded(segmentGroup, consumedSegments, slicedSegments, routes, children) {\n    const res = {};\n    for (const r of routes) {\n        if (emptyPathMatch(segmentGroup, slicedSegments, r) && !children[getOutlet(r)]) {\n            const s = new UrlSegmentGroup([], {});\n            s._sourceSegment = segmentGroup;\n            s._segmentIndexShift = consumedSegments.length;\n            res[getOutlet(r)] = s;\n        }\n    }\n    return { ...children, ...res };\n}\nfunction createChildrenForEmptyPaths(segmentGroup, consumedSegments, routes, primarySegment) {\n    const res = {};\n    res[PRIMARY_OUTLET] = primarySegment;\n    primarySegment._sourceSegment = segmentGroup;\n    primarySegment._segmentIndexShift = consumedSegments.length;\n    for (const r of routes) {\n        if (r.path === '' && getOutlet(r) !== PRIMARY_OUTLET) {\n            const s = new UrlSegmentGroup([], {});\n            s._sourceSegment = segmentGroup;\n            s._segmentIndexShift = consumedSegments.length;\n            res[getOutlet(r)] = s;\n        }\n    }\n    return res;\n}\nfunction containsEmptyPathMatchesWithNamedOutlets(segmentGroup, slicedSegments, routes) {\n    return routes.some(r => emptyPathMatch(segmentGroup, slicedSegments, r) && getOutlet(r) !== PRIMARY_OUTLET);\n}\nfunction containsEmptyPathMatches(segmentGroup, slicedSegments, routes) {\n    return routes.some(r => emptyPathMatch(segmentGroup, slicedSegments, r));\n}\nfunction emptyPathMatch(segmentGroup, slicedSegments, r) {\n    if ((segmentGroup.hasChildren() || slicedSegments.length > 0) && r.pathMatch === 'full') {\n        return false;\n    }\n    return r.path === '';\n}\n/**\n * Determines if `route` is a path match for the `rawSegment`, `segments`, and `outlet` without\n * verifying that its children are a full match for the remainder of the `rawSegment` children as\n * well.\n */\nfunction isImmediateMatch(route, rawSegment, segments, outlet) {\n    // We allow matches to empty paths when the outlets differ so we can match a url like `/(b:b)` to\n    // a config like\n    // * `{path: '', children: [{path: 'b', outlet: 'b'}]}`\n    // or even\n    // * `{path: '', outlet: 'a', children: [{path: 'b', outlet: 'b'}]`\n    //\n    // The exception here is when the segment outlet is for the primary outlet. This would\n    // result in a match inside the named outlet because all children there are written as primary\n    // outlets. So we need to prevent child named outlet matches in a url like `/b` in a config like\n    // * `{path: '', outlet: 'x' children: [{path: 'b'}]}`\n    // This should only match if the url is `/(x:b)`.\n    if (getOutlet(route) !== outlet &&\n        (outlet === PRIMARY_OUTLET || !emptyPathMatch(rawSegment, segments, route))) {\n        return false;\n    }\n    if (route.path === '**') {\n        return true;\n    }\n    return match(rawSegment, route, segments).matched;\n}\nfunction noLeftoversInUrl(segmentGroup, segments, outlet) {\n    return segments.length === 0 && !segmentGroup.children[outlet];\n}\n\nconst NG_DEV_MODE$7 = typeof ngDevMode === 'undefined' || ngDevMode;\nclass NoMatch$1 {\n    constructor(segmentGroup) {\n        this.segmentGroup = segmentGroup || null;\n    }\n}\nclass AbsoluteRedirect {\n    constructor(urlTree) {\n        this.urlTree = urlTree;\n    }\n}\nfunction noMatch(segmentGroup) {\n    return throwError(new NoMatch$1(segmentGroup));\n}\nfunction absoluteRedirect(newTree) {\n    return throwError(new AbsoluteRedirect(newTree));\n}\nfunction namedOutletsRedirect(redirectTo) {\n    return throwError(new ɵRuntimeError(4000 /* RuntimeErrorCode.NAMED_OUTLET_REDIRECT */, NG_DEV_MODE$7 &&\n        `Only absolute redirects can have named outlets. redirectTo: '${redirectTo}'`));\n}\nfunction canLoadFails(route) {\n    return throwError(navigationCancelingError(NG_DEV_MODE$7 &&\n        `Cannot load children because the guard of the route \"path: '${route.path}'\" returned false`, 3 /* NavigationCancellationCode.GuardRejected */));\n}\n/**\n * Returns the `UrlTree` with the redirection applied.\n *\n * Lazy modules are loaded along the way.\n */\nfunction applyRedirects$1(injector, configLoader, urlSerializer, urlTree, config) {\n    return new ApplyRedirects(injector, configLoader, urlSerializer, urlTree, config).apply();\n}\nclass ApplyRedirects {\n    constructor(injector, configLoader, urlSerializer, urlTree, config) {\n        this.injector = injector;\n        this.configLoader = configLoader;\n        this.urlSerializer = urlSerializer;\n        this.urlTree = urlTree;\n        this.config = config;\n        this.allowRedirects = true;\n    }\n    apply() {\n        const splitGroup = split(this.urlTree.root, [], [], this.config).segmentGroup;\n        // TODO(atscott): creating a new segment removes the _sourceSegment _segmentIndexShift, which is\n        // only necessary to prevent failures in tests which assert exact object matches. The `split` is\n        // now shared between `applyRedirects` and `recognize` but only the `recognize` step needs these\n        // properties. Before the implementations were merged, the `applyRedirects` would not assign\n        // them. We should be able to remove this logic as a \"breaking change\" but should do some more\n        // investigation into the failures first.\n        const rootSegmentGroup = new UrlSegmentGroup(splitGroup.segments, splitGroup.children);\n        const expanded$ = this.expandSegmentGroup(this.injector, this.config, rootSegmentGroup, PRIMARY_OUTLET);\n        const urlTrees$ = expanded$.pipe(map((rootSegmentGroup) => {\n            return this.createUrlTree(squashSegmentGroup(rootSegmentGroup), this.urlTree.queryParams, this.urlTree.fragment);\n        }));\n        return urlTrees$.pipe(catchError((e) => {\n            if (e instanceof AbsoluteRedirect) {\n                // After an absolute redirect we do not apply any more redirects!\n                // If this implementation changes, update the documentation note in `redirectTo`.\n                this.allowRedirects = false;\n                // we need to run matching, so we can fetch all lazy-loaded modules\n                return this.match(e.urlTree);\n            }\n            if (e instanceof NoMatch$1) {\n                throw this.noMatchError(e);\n            }\n            throw e;\n        }));\n    }\n    match(tree) {\n        const expanded$ = this.expandSegmentGroup(this.injector, this.config, tree.root, PRIMARY_OUTLET);\n        const mapped$ = expanded$.pipe(map((rootSegmentGroup) => {\n            return this.createUrlTree(squashSegmentGroup(rootSegmentGroup), tree.queryParams, tree.fragment);\n        }));\n        return mapped$.pipe(catchError((e) => {\n            if (e instanceof NoMatch$1) {\n                throw this.noMatchError(e);\n            }\n            throw e;\n        }));\n    }\n    noMatchError(e) {\n        return new ɵRuntimeError(4002 /* RuntimeErrorCode.NO_MATCH */, NG_DEV_MODE$7 && `Cannot match any routes. URL Segment: '${e.segmentGroup}'`);\n    }\n    createUrlTree(rootCandidate, queryParams, fragment) {\n        const root = createRoot(rootCandidate);\n        return new UrlTree(root, queryParams, fragment);\n    }\n    expandSegmentGroup(injector, routes, segmentGroup, outlet) {\n        if (segmentGroup.segments.length === 0 && segmentGroup.hasChildren()) {\n            return this.expandChildren(injector, routes, segmentGroup)\n                .pipe(map((children) => new UrlSegmentGroup([], children)));\n        }\n        return this.expandSegment(injector, segmentGroup, routes, segmentGroup.segments, outlet, true);\n    }\n    // Recursively expand segment groups for all the child outlets\n    expandChildren(injector, routes, segmentGroup) {\n        // Expand outlets one at a time, starting with the primary outlet. We need to do it this way\n        // because an absolute redirect from the primary outlet takes precedence.\n        const childOutlets = [];\n        for (const child of Object.keys(segmentGroup.children)) {\n            if (child === 'primary') {\n                childOutlets.unshift(child);\n            }\n            else {\n                childOutlets.push(child);\n            }\n        }\n        return from(childOutlets)\n            .pipe(concatMap(childOutlet => {\n            const child = segmentGroup.children[childOutlet];\n            // Sort the routes so routes with outlets that match the segment appear\n            // first, followed by routes for other outlets, which might match if they have an\n            // empty path.\n            const sortedRoutes = sortByMatchingOutlets(routes, childOutlet);\n            return this.expandSegmentGroup(injector, sortedRoutes, child, childOutlet)\n                .pipe(map(s => ({ segment: s, outlet: childOutlet })));\n        }), scan((children, expandedChild) => {\n            children[expandedChild.outlet] = expandedChild.segment;\n            return children;\n        }, {}), last$1());\n    }\n    expandSegment(injector, segmentGroup, routes, segments, outlet, allowRedirects) {\n        return from(routes).pipe(concatMap(r => {\n            const expanded$ = this.expandSegmentAgainstRoute(injector, segmentGroup, routes, r, segments, outlet, allowRedirects);\n            return expanded$.pipe(catchError((e) => {\n                if (e instanceof NoMatch$1) {\n                    return of(null);\n                }\n                throw e;\n            }));\n        }), first((s) => !!s), catchError((e, _) => {\n            if (isEmptyError(e)) {\n                if (noLeftoversInUrl(segmentGroup, segments, outlet)) {\n                    return of(new UrlSegmentGroup([], {}));\n                }\n                return noMatch(segmentGroup);\n            }\n            throw e;\n        }));\n    }\n    expandSegmentAgainstRoute(injector, segmentGroup, routes, route, paths, outlet, allowRedirects) {\n        if (!isImmediateMatch(route, segmentGroup, paths, outlet)) {\n            return noMatch(segmentGroup);\n        }\n        if (route.redirectTo === undefined) {\n            return this.matchSegmentAgainstRoute(injector, segmentGroup, route, paths, outlet);\n        }\n        if (allowRedirects && this.allowRedirects) {\n            return this.expandSegmentAgainstRouteUsingRedirect(injector, segmentGroup, routes, route, paths, outlet);\n        }\n        return noMatch(segmentGroup);\n    }\n    expandSegmentAgainstRouteUsingRedirect(injector, segmentGroup, routes, route, segments, outlet) {\n        if (route.path === '**') {\n            return this.expandWildCardWithParamsAgainstRouteUsingRedirect(injector, routes, route, outlet);\n        }\n        return this.expandRegularSegmentAgainstRouteUsingRedirect(injector, segmentGroup, routes, route, segments, outlet);\n    }\n    expandWildCardWithParamsAgainstRouteUsingRedirect(injector, routes, route, outlet) {\n        const newTree = this.applyRedirectCommands([], route.redirectTo, {});\n        if (route.redirectTo.startsWith('/')) {\n            return absoluteRedirect(newTree);\n        }\n        return this.lineralizeSegments(route, newTree).pipe(mergeMap((newSegments) => {\n            const group = new UrlSegmentGroup(newSegments, {});\n            return this.expandSegment(injector, group, routes, newSegments, outlet, false);\n        }));\n    }\n    expandRegularSegmentAgainstRouteUsingRedirect(injector, segmentGroup, routes, route, segments, outlet) {\n        const { matched, consumedSegments, remainingSegments, positionalParamSegments } = match(segmentGroup, route, segments);\n        if (!matched)\n            return noMatch(segmentGroup);\n        const newTree = this.applyRedirectCommands(consumedSegments, route.redirectTo, positionalParamSegments);\n        if (route.redirectTo.startsWith('/')) {\n            return absoluteRedirect(newTree);\n        }\n        return this.lineralizeSegments(route, newTree).pipe(mergeMap((newSegments) => {\n            return this.expandSegment(injector, segmentGroup, routes, newSegments.concat(remainingSegments), outlet, false);\n        }));\n    }\n    matchSegmentAgainstRoute(injector, rawSegmentGroup, route, segments, outlet) {\n        if (route.path === '**') {\n            // Only create the Route's `EnvironmentInjector` if it matches the attempted navigation\n            injector = getOrCreateRouteInjectorIfNeeded(route, injector);\n            if (route.loadChildren) {\n                const loaded$ = route._loadedRoutes ?\n                    of({ routes: route._loadedRoutes, injector: route._loadedInjector }) :\n                    this.configLoader.loadChildren(injector, route);\n                return loaded$.pipe(map((cfg) => {\n                    route._loadedRoutes = cfg.routes;\n                    route._loadedInjector = cfg.injector;\n                    return new UrlSegmentGroup(segments, {});\n                }));\n            }\n            return of(new UrlSegmentGroup(segments, {}));\n        }\n        return matchWithChecks(rawSegmentGroup, route, segments, injector, this.urlSerializer)\n            .pipe(switchMap(({ matched, consumedSegments, remainingSegments }) => {\n            if (!matched)\n                return noMatch(rawSegmentGroup);\n            // If the route has an injector created from providers, we should start using that.\n            injector = route._injector ?? injector;\n            const childConfig$ = this.getChildConfig(injector, route, segments);\n            return childConfig$.pipe(mergeMap((routerConfig) => {\n                const childInjector = routerConfig.injector ?? injector;\n                const childConfig = routerConfig.routes;\n                const { segmentGroup: splitSegmentGroup, slicedSegments } = split(rawSegmentGroup, consumedSegments, remainingSegments, childConfig);\n                // See comment on the other call to `split` about why this is necessary.\n                const segmentGroup = new UrlSegmentGroup(splitSegmentGroup.segments, splitSegmentGroup.children);\n                if (slicedSegments.length === 0 && segmentGroup.hasChildren()) {\n                    const expanded$ = this.expandChildren(childInjector, childConfig, segmentGroup);\n                    return expanded$.pipe(map((children) => new UrlSegmentGroup(consumedSegments, children)));\n                }\n                if (childConfig.length === 0 && slicedSegments.length === 0) {\n                    return of(new UrlSegmentGroup(consumedSegments, {}));\n                }\n                const matchedOnOutlet = getOutlet(route) === outlet;\n                const expanded$ = this.expandSegment(childInjector, segmentGroup, childConfig, slicedSegments, matchedOnOutlet ? PRIMARY_OUTLET : outlet, true);\n                return expanded$.pipe(map((cs) => new UrlSegmentGroup(consumedSegments.concat(cs.segments), cs.children)));\n            }));\n        }));\n    }\n    getChildConfig(injector, route, segments) {\n        if (route.children) {\n            // The children belong to the same module\n            return of({ routes: route.children, injector });\n        }\n        if (route.loadChildren) {\n            // lazy children belong to the loaded module\n            if (route._loadedRoutes !== undefined) {\n                return of({ routes: route._loadedRoutes, injector: route._loadedInjector });\n            }\n            return runCanLoadGuards(injector, route, segments, this.urlSerializer)\n                .pipe(mergeMap((shouldLoadResult) => {\n                if (shouldLoadResult) {\n                    return this.configLoader.loadChildren(injector, route)\n                        .pipe(tap((cfg) => {\n                        route._loadedRoutes = cfg.routes;\n                        route._loadedInjector = cfg.injector;\n                    }));\n                }\n                return canLoadFails(route);\n            }));\n        }\n        return of({ routes: [], injector });\n    }\n    lineralizeSegments(route, urlTree) {\n        let res = [];\n        let c = urlTree.root;\n        while (true) {\n            res = res.concat(c.segments);\n            if (c.numberOfChildren === 0) {\n                return of(res);\n            }\n            if (c.numberOfChildren > 1 || !c.children[PRIMARY_OUTLET]) {\n                return namedOutletsRedirect(route.redirectTo);\n            }\n            c = c.children[PRIMARY_OUTLET];\n        }\n    }\n    applyRedirectCommands(segments, redirectTo, posParams) {\n        return this.applyRedirectCreateUrlTree(redirectTo, this.urlSerializer.parse(redirectTo), segments, posParams);\n    }\n    applyRedirectCreateUrlTree(redirectTo, urlTree, segments, posParams) {\n        const newRoot = this.createSegmentGroup(redirectTo, urlTree.root, segments, posParams);\n        return new UrlTree(newRoot, this.createQueryParams(urlTree.queryParams, this.urlTree.queryParams), urlTree.fragment);\n    }\n    createQueryParams(redirectToParams, actualParams) {\n        const res = {};\n        forEach(redirectToParams, (v, k) => {\n            const copySourceValue = typeof v === 'string' && v.startsWith(':');\n            if (copySourceValue) {\n                const sourceName = v.substring(1);\n                res[k] = actualParams[sourceName];\n            }\n            else {\n                res[k] = v;\n            }\n        });\n        return res;\n    }\n    createSegmentGroup(redirectTo, group, segments, posParams) {\n        const updatedSegments = this.createSegments(redirectTo, group.segments, segments, posParams);\n        let children = {};\n        forEach(group.children, (child, name) => {\n            children[name] = this.createSegmentGroup(redirectTo, child, segments, posParams);\n        });\n        return new UrlSegmentGroup(updatedSegments, children);\n    }\n    createSegments(redirectTo, redirectToSegments, actualSegments, posParams) {\n        return redirectToSegments.map(s => s.path.startsWith(':') ? this.findPosParam(redirectTo, s, posParams) :\n            this.findOrReturn(s, actualSegments));\n    }\n    findPosParam(redirectTo, redirectToUrlSegment, posParams) {\n        const pos = posParams[redirectToUrlSegment.path.substring(1)];\n        if (!pos)\n            throw new ɵRuntimeError(4001 /* RuntimeErrorCode.MISSING_REDIRECT */, NG_DEV_MODE$7 &&\n                `Cannot redirect to '${redirectTo}'. Cannot find '${redirectToUrlSegment.path}'.`);\n        return pos;\n    }\n    findOrReturn(redirectToUrlSegment, actualSegments) {\n        let idx = 0;\n        for (const s of actualSegments) {\n            if (s.path === redirectToUrlSegment.path) {\n                actualSegments.splice(idx);\n                return s;\n            }\n            idx++;\n        }\n        return redirectToUrlSegment;\n    }\n}\n\nfunction applyRedirects(environmentInjector, configLoader, urlSerializer, config) {\n    return switchMap(t => applyRedirects$1(environmentInjector, configLoader, urlSerializer, t.extractedUrl, config)\n        .pipe(map(urlAfterRedirects => ({ ...t, urlAfterRedirects }))));\n}\n\nconst NG_DEV_MODE$6 = typeof ngDevMode === 'undefined' || !!ngDevMode;\nclass NoMatch {\n}\nfunction newObservableError(e) {\n    // TODO(atscott): This pattern is used throughout the router code and can be `throwError` instead.\n    return new Observable((obs) => obs.error(e));\n}\nfunction recognize$1(injector, rootComponentType, config, urlTree, url, urlSerializer, paramsInheritanceStrategy = 'emptyOnly') {\n    return new Recognizer(injector, rootComponentType, config, urlTree, url, paramsInheritanceStrategy, urlSerializer)\n        .recognize()\n        .pipe(switchMap(result => {\n        if (result === null) {\n            return newObservableError(new NoMatch());\n        }\n        else {\n            return of(result);\n        }\n    }));\n}\nclass Recognizer {\n    constructor(injector, rootComponentType, config, urlTree, url, paramsInheritanceStrategy, urlSerializer) {\n        this.injector = injector;\n        this.rootComponentType = rootComponentType;\n        this.config = config;\n        this.urlTree = urlTree;\n        this.url = url;\n        this.paramsInheritanceStrategy = paramsInheritanceStrategy;\n        this.urlSerializer = urlSerializer;\n    }\n    recognize() {\n        const rootSegmentGroup = split(this.urlTree.root, [], [], this.config.filter(c => c.redirectTo === undefined))\n            .segmentGroup;\n        return this.processSegmentGroup(this.injector, this.config, rootSegmentGroup, PRIMARY_OUTLET)\n            .pipe(map(children => {\n            if (children === null) {\n                return null;\n            }\n            // Use Object.freeze to prevent readers of the Router state from modifying it outside of a\n            // navigation, resulting in the router being out of sync with the browser.\n            const root = new ActivatedRouteSnapshot([], Object.freeze({}), Object.freeze({ ...this.urlTree.queryParams }), this.urlTree.fragment, {}, PRIMARY_OUTLET, this.rootComponentType, null, this.urlTree.root, -1, {});\n            const rootNode = new TreeNode(root, children);\n            const routeState = new RouterStateSnapshot(this.url, rootNode);\n            this.inheritParamsAndData(routeState._root);\n            return routeState;\n        }));\n    }\n    inheritParamsAndData(routeNode) {\n        const route = routeNode.value;\n        const i = inheritedParamsDataResolve(route, this.paramsInheritanceStrategy);\n        route.params = Object.freeze(i.params);\n        route.data = Object.freeze(i.data);\n        routeNode.children.forEach(n => this.inheritParamsAndData(n));\n    }\n    processSegmentGroup(injector, config, segmentGroup, outlet) {\n        if (segmentGroup.segments.length === 0 && segmentGroup.hasChildren()) {\n            return this.processChildren(injector, config, segmentGroup);\n        }\n        return this.processSegment(injector, config, segmentGroup, segmentGroup.segments, outlet);\n    }\n    /**\n     * Matches every child outlet in the `segmentGroup` to a `Route` in the config. Returns `null` if\n     * we cannot find a match for _any_ of the children.\n     *\n     * @param config - The `Routes` to match against\n     * @param segmentGroup - The `UrlSegmentGroup` whose children need to be matched against the\n     *     config.\n     */\n    processChildren(injector, config, segmentGroup) {\n        return from(Object.keys(segmentGroup.children))\n            .pipe(concatMap(childOutlet => {\n            const child = segmentGroup.children[childOutlet];\n            // Sort the config so that routes with outlets that match the one being activated\n            // appear first, followed by routes for other outlets, which might match if they have\n            // an empty path.\n            const sortedConfig = sortByMatchingOutlets(config, childOutlet);\n            return this.processSegmentGroup(injector, sortedConfig, child, childOutlet);\n        }), scan((children, outletChildren) => {\n            if (!children || !outletChildren)\n                return null;\n            children.push(...outletChildren);\n            return children;\n        }), takeWhile(children => children !== null), defaultIfEmpty(null), last$1(), map(children => {\n            if (children === null)\n                return null;\n            // Because we may have matched two outlets to the same empty path segment, we can have\n            // multiple activated results for the same outlet. We should merge the children of\n            // these results so the final return value is only one `TreeNode` per outlet.\n            const mergedChildren = mergeEmptyPathMatches(children);\n            if (NG_DEV_MODE$6) {\n                // This should really never happen - we are only taking the first match for each\n                // outlet and merge the empty path matches.\n                checkOutletNameUniqueness(mergedChildren);\n            }\n            sortActivatedRouteSnapshots(mergedChildren);\n            return mergedChildren;\n        }));\n    }\n    processSegment(injector, routes, segmentGroup, segments, outlet) {\n        return from(routes).pipe(concatMap(r => {\n            return this.processSegmentAgainstRoute(r._injector ?? injector, r, segmentGroup, segments, outlet);\n        }), first((x) => !!x), catchError(e => {\n            if (isEmptyError(e)) {\n                if (noLeftoversInUrl(segmentGroup, segments, outlet)) {\n                    return of([]);\n                }\n                return of(null);\n            }\n            throw e;\n        }));\n    }\n    processSegmentAgainstRoute(injector, route, rawSegment, segments, outlet) {\n        if (route.redirectTo || !isImmediateMatch(route, rawSegment, segments, outlet))\n            return of(null);\n        let matchResult;\n        if (route.path === '**') {\n            const params = segments.length > 0 ? last(segments).parameters : {};\n            const pathIndexShift = getPathIndexShift(rawSegment) + segments.length;\n            const snapshot = new ActivatedRouteSnapshot(segments, params, Object.freeze({ ...this.urlTree.queryParams }), this.urlTree.fragment, getData(route), getOutlet(route), route.component ?? route._loadedComponent ?? null, route, getSourceSegmentGroup(rawSegment), pathIndexShift, getResolve(route));\n            matchResult = of({\n                snapshot,\n                consumedSegments: [],\n                remainingSegments: [],\n            });\n        }\n        else {\n            matchResult =\n                matchWithChecks(rawSegment, route, segments, injector, this.urlSerializer)\n                    .pipe(map(({ matched, consumedSegments, remainingSegments, parameters }) => {\n                    if (!matched) {\n                        return null;\n                    }\n                    const pathIndexShift = getPathIndexShift(rawSegment) + consumedSegments.length;\n                    const snapshot = new ActivatedRouteSnapshot(consumedSegments, parameters, Object.freeze({ ...this.urlTree.queryParams }), this.urlTree.fragment, getData(route), getOutlet(route), route.component ?? route._loadedComponent ?? null, route, getSourceSegmentGroup(rawSegment), pathIndexShift, getResolve(route));\n                    return { snapshot, consumedSegments, remainingSegments };\n                }));\n        }\n        return matchResult.pipe(switchMap((result) => {\n            if (result === null) {\n                return of(null);\n            }\n            const { snapshot, consumedSegments, remainingSegments } = result;\n            // If the route has an injector created from providers, we should start using that.\n            injector = route._injector ?? injector;\n            const childInjector = route._loadedInjector ?? injector;\n            const childConfig = getChildConfig(route);\n            const { segmentGroup, slicedSegments } = split(rawSegment, consumedSegments, remainingSegments, \n            // Filter out routes with redirectTo because we are trying to create activated route\n            // snapshots and don't handle redirects here. That should have been done in\n            // `applyRedirects`.\n            childConfig.filter(c => c.redirectTo === undefined));\n            if (slicedSegments.length === 0 && segmentGroup.hasChildren()) {\n                return this.processChildren(childInjector, childConfig, segmentGroup).pipe(map(children => {\n                    if (children === null) {\n                        return null;\n                    }\n                    return [new TreeNode(snapshot, children)];\n                }));\n            }\n            if (childConfig.length === 0 && slicedSegments.length === 0) {\n                return of([new TreeNode(snapshot, [])]);\n            }\n            const matchedOnOutlet = getOutlet(route) === outlet;\n            // If we matched a config due to empty path match on a different outlet, we need to\n            // continue passing the current outlet for the segment rather than switch to PRIMARY.\n            // Note that we switch to primary when we have a match because outlet configs look like\n            // this: {path: 'a', outlet: 'a', children: [\n            //  {path: 'b', component: B},\n            //  {path: 'c', component: C},\n            // ]}\n            // Notice that the children of the named outlet are configured with the primary outlet\n            return this\n                .processSegment(childInjector, childConfig, segmentGroup, slicedSegments, matchedOnOutlet ? PRIMARY_OUTLET : outlet)\n                .pipe(map(children => {\n                if (children === null) {\n                    return null;\n                }\n                return [new TreeNode(snapshot, children)];\n            }));\n        }));\n    }\n}\nfunction sortActivatedRouteSnapshots(nodes) {\n    nodes.sort((a, b) => {\n        if (a.value.outlet === PRIMARY_OUTLET)\n            return -1;\n        if (b.value.outlet === PRIMARY_OUTLET)\n            return 1;\n        return a.value.outlet.localeCompare(b.value.outlet);\n    });\n}\nfunction getChildConfig(route) {\n    if (route.children) {\n        return route.children;\n    }\n    if (route.loadChildren) {\n        return route._loadedRoutes;\n    }\n    return [];\n}\nfunction hasEmptyPathConfig(node) {\n    const config = node.value.routeConfig;\n    return config && config.path === '' && config.redirectTo === undefined;\n}\n/**\n * Finds `TreeNode`s with matching empty path route configs and merges them into `TreeNode` with\n * the children from each duplicate. This is necessary because different outlets can match a\n * single empty path route config and the results need to then be merged.\n */\nfunction mergeEmptyPathMatches(nodes) {\n    const result = [];\n    // The set of nodes which contain children that were merged from two duplicate empty path nodes.\n    const mergedNodes = new Set();\n    for (const node of nodes) {\n        if (!hasEmptyPathConfig(node)) {\n            result.push(node);\n            continue;\n        }\n        const duplicateEmptyPathNode = result.find(resultNode => node.value.routeConfig === resultNode.value.routeConfig);\n        if (duplicateEmptyPathNode !== undefined) {\n            duplicateEmptyPathNode.children.push(...node.children);\n            mergedNodes.add(duplicateEmptyPathNode);\n        }\n        else {\n            result.push(node);\n        }\n    }\n    // For each node which has children from multiple sources, we need to recompute a new `TreeNode`\n    // by also merging those children. This is necessary when there are multiple empty path configs\n    // in a row. Put another way: whenever we combine children of two nodes, we need to also check\n    // if any of those children can be combined into a single node as well.\n    for (const mergedNode of mergedNodes) {\n        const mergedChildren = mergeEmptyPathMatches(mergedNode.children);\n        result.push(new TreeNode(mergedNode.value, mergedChildren));\n    }\n    return result.filter(n => !mergedNodes.has(n));\n}\nfunction checkOutletNameUniqueness(nodes) {\n    const names = {};\n    nodes.forEach(n => {\n        const routeWithSameOutletName = names[n.value.outlet];\n        if (routeWithSameOutletName) {\n            const p = routeWithSameOutletName.url.map(s => s.toString()).join('/');\n            const c = n.value.url.map(s => s.toString()).join('/');\n            throw new ɵRuntimeError(4006 /* RuntimeErrorCode.TWO_SEGMENTS_WITH_SAME_OUTLET */, NG_DEV_MODE$6 && `Two segments cannot have the same outlet name: '${p}' and '${c}'.`);\n        }\n        names[n.value.outlet] = n.value;\n    });\n}\nfunction getSourceSegmentGroup(segmentGroup) {\n    let s = segmentGroup;\n    while (s._sourceSegment) {\n        s = s._sourceSegment;\n    }\n    return s;\n}\nfunction getPathIndexShift(segmentGroup) {\n    let s = segmentGroup;\n    let res = s._segmentIndexShift ?? 0;\n    while (s._sourceSegment) {\n        s = s._sourceSegment;\n        res += s._segmentIndexShift ?? 0;\n    }\n    return res - 1;\n}\nfunction getCorrectedPathIndexShift(segmentGroup) {\n    let s = segmentGroup;\n    let res = s._segmentIndexShiftCorrected ?? s._segmentIndexShift ?? 0;\n    while (s._sourceSegment) {\n        s = s._sourceSegment;\n        res += s._segmentIndexShiftCorrected ?? s._segmentIndexShift ?? 0;\n    }\n    return res - 1;\n}\nfunction getData(route) {\n    return route.data || {};\n}\nfunction getResolve(route) {\n    return route.resolve || {};\n}\n\nfunction recognize(injector, rootComponentType, config, serializer, paramsInheritanceStrategy) {\n    return mergeMap(t => recognize$1(injector, rootComponentType, config, t.urlAfterRedirects, serializer.serialize(t.urlAfterRedirects), serializer, paramsInheritanceStrategy)\n        .pipe(map(targetSnapshot => ({ ...t, targetSnapshot }))));\n}\n\nfunction resolveData(paramsInheritanceStrategy, injector) {\n    return mergeMap(t => {\n        const { targetSnapshot, guards: { canActivateChecks } } = t;\n        if (!canActivateChecks.length) {\n            return of(t);\n        }\n        let canActivateChecksResolved = 0;\n        return from(canActivateChecks)\n            .pipe(concatMap(check => runResolve(check.route, targetSnapshot, paramsInheritanceStrategy, injector)), tap(() => canActivateChecksResolved++), takeLast(1), mergeMap(_ => canActivateChecksResolved === canActivateChecks.length ? of(t) : EMPTY));\n    });\n}\nfunction runResolve(futureARS, futureRSS, paramsInheritanceStrategy, injector) {\n    const config = futureARS.routeConfig;\n    const resolve = futureARS._resolve;\n    if (config?.title !== undefined && !hasStaticTitle(config)) {\n        resolve[RouteTitleKey] = config.title;\n    }\n    return resolveNode(resolve, futureARS, futureRSS, injector).pipe(map((resolvedData) => {\n        futureARS._resolvedData = resolvedData;\n        futureARS.data = inheritedParamsDataResolve(futureARS, paramsInheritanceStrategy).resolve;\n        if (config && hasStaticTitle(config)) {\n            futureARS.data[RouteTitleKey] = config.title;\n        }\n        return null;\n    }));\n}\nfunction resolveNode(resolve, futureARS, futureRSS, injector) {\n    const keys = getDataKeys(resolve);\n    if (keys.length === 0) {\n        return of({});\n    }\n    const data = {};\n    return from(keys).pipe(mergeMap(key => getResolver(resolve[key], futureARS, futureRSS, injector)\n        .pipe(first(), tap((value) => {\n        data[key] = value;\n    }))), takeLast(1), mapTo(data), catchError((e) => isEmptyError(e) ? EMPTY : throwError(e)));\n}\nfunction getDataKeys(obj) {\n    return [...Object.keys(obj), ...Object.getOwnPropertySymbols(obj)];\n}\nfunction getResolver(injectionToken, futureARS, futureRSS, injector) {\n    const closestInjector = getClosestRouteInjector(futureARS) ?? injector;\n    const resolver = getTokenOrFunctionIdentity(injectionToken, closestInjector);\n    const resolverValue = resolver.resolve ?\n        resolver.resolve(futureARS, futureRSS) :\n        closestInjector.runInContext(() => resolver(futureARS, futureRSS));\n    return wrapIntoObservable(resolverValue);\n}\nfunction hasStaticTitle(config) {\n    return typeof config.title === 'string' || config.title === null;\n}\n\n/**\n * Perform a side effect through a switchMap for every emission on the source Observable,\n * but return an Observable that is identical to the source. It's essentially the same as\n * the `tap` operator, but if the side effectful `next` function returns an ObservableInput,\n * it will wait before continuing with the original value.\n */\nfunction switchTap(next) {\n    return switchMap(v => {\n        const nextResult = next(v);\n        if (nextResult) {\n            return from(nextResult).pipe(map(() => v));\n        }\n        return of(v);\n    });\n}\n\nconst NG_DEV_MODE$5 = typeof ngDevMode === 'undefined' || !!ngDevMode;\n/**\n * The [DI token](guide/glossary/#di-token) for a router configuration.\n *\n * `ROUTES` is a low level API for router configuration via dependency injection.\n *\n * We recommend that in almost all cases to use higher level APIs such as `RouterModule.forRoot()`,\n * `provideRouter`, or `Router.resetConfig()`.\n *\n * @publicApi\n */\nconst ROUTES = new InjectionToken('ROUTES');\nclass RouterConfigLoader {\n    constructor() {\n        this.componentLoaders = new WeakMap();\n        this.childrenLoaders = new WeakMap();\n        this.compiler = inject(Compiler);\n    }\n    loadComponent(route) {\n        if (this.componentLoaders.get(route)) {\n            return this.componentLoaders.get(route);\n        }\n        else if (route._loadedComponent) {\n            return of(route._loadedComponent);\n        }\n        if (this.onLoadStartListener) {\n            this.onLoadStartListener(route);\n        }\n        const loadRunner = wrapIntoObservable(route.loadComponent())\n            .pipe(map(maybeUnwrapDefaultExport), tap(component => {\n            if (this.onLoadEndListener) {\n                this.onLoadEndListener(route);\n            }\n            NG_DEV_MODE$5 && assertStandalone(route.path ?? '', component);\n            route._loadedComponent = component;\n        }), finalize(() => {\n            this.componentLoaders.delete(route);\n        }));\n        // Use custom ConnectableObservable as share in runners pipe increasing the bundle size too much\n        const loader = new ConnectableObservable(loadRunner, () => new Subject()).pipe(refCount());\n        this.componentLoaders.set(route, loader);\n        return loader;\n    }\n    loadChildren(parentInjector, route) {\n        if (this.childrenLoaders.get(route)) {\n            return this.childrenLoaders.get(route);\n        }\n        else if (route._loadedRoutes) {\n            return of({ routes: route._loadedRoutes, injector: route._loadedInjector });\n        }\n        if (this.onLoadStartListener) {\n            this.onLoadStartListener(route);\n        }\n        const moduleFactoryOrRoutes$ = this.loadModuleFactoryOrRoutes(route.loadChildren);\n        const loadRunner = moduleFactoryOrRoutes$.pipe(map((factoryOrRoutes) => {\n            if (this.onLoadEndListener) {\n                this.onLoadEndListener(route);\n            }\n            // This injector comes from the `NgModuleRef` when lazy loading an `NgModule`. There is no\n            // injector associated with lazy loading a `Route` array.\n            let injector;\n            let rawRoutes;\n            let requireStandaloneComponents = false;\n            if (Array.isArray(factoryOrRoutes)) {\n                rawRoutes = factoryOrRoutes;\n                requireStandaloneComponents = true;\n            }\n            else {\n                injector = factoryOrRoutes.create(parentInjector).injector;\n                // When loading a module that doesn't provide `RouterModule.forChild()` preloader\n                // will get stuck in an infinite loop. The child module's Injector will look to\n                // its parent `Injector` when it doesn't find any ROUTES so it will return routes\n                // for it's parent module instead.\n                rawRoutes = flatten(injector.get(ROUTES, [], InjectFlags.Self | InjectFlags.Optional));\n            }\n            const routes = rawRoutes.map(standardizeConfig);\n            NG_DEV_MODE$5 && validateConfig(routes, route.path, requireStandaloneComponents);\n            return { routes, injector };\n        }), finalize(() => {\n            this.childrenLoaders.delete(route);\n        }));\n        // Use custom ConnectableObservable as share in runners pipe increasing the bundle size too much\n        const loader = new ConnectableObservable(loadRunner, () => new Subject())\n            .pipe(refCount());\n        this.childrenLoaders.set(route, loader);\n        return loader;\n    }\n    loadModuleFactoryOrRoutes(loadChildren) {\n        return wrapIntoObservable(loadChildren())\n            .pipe(map(maybeUnwrapDefaultExport), mergeMap((t) => {\n            if (t instanceof NgModuleFactory || Array.isArray(t)) {\n                return of(t);\n            }\n            else {\n                return from(this.compiler.compileModuleAsync(t));\n            }\n        }));\n    }\n}\nRouterConfigLoader.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterConfigLoader, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nRouterConfigLoader.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterConfigLoader, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterConfigLoader, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }] });\nfunction isWrappedDefaultExport(value) {\n    // We use `in` here with a string key `'default'`, because we expect `DefaultExport` objects to be\n    // dynamically imported ES modules with a spec-mandated `default` key. Thus we don't expect that\n    // `default` will be a renamed property.\n    return value && typeof value === 'object' && 'default' in value;\n}\nfunction maybeUnwrapDefaultExport(input) {\n    // As per `isWrappedDefaultExport`, the `default` key here is generated by the browser and not\n    // subject to property renaming, so we reference it with bracket access.\n    return isWrappedDefaultExport(input) ? input['default'] : input;\n}\n\nconst NG_DEV_MODE$4 = typeof ngDevMode === 'undefined' || !!ngDevMode;\nclass NavigationTransitions {\n    get hasRequestedNavigation() {\n        return this.navigationId !== 0;\n    }\n    constructor() {\n        this.currentNavigation = null;\n        this.lastSuccessfulNavigation = null;\n        this.events = new Subject();\n        this.configLoader = inject(RouterConfigLoader);\n        this.environmentInjector = inject(EnvironmentInjector);\n        this.urlSerializer = inject(UrlSerializer);\n        this.rootContexts = inject(ChildrenOutletContexts);\n        this.navigationId = 0;\n        /**\n         * Hook that enables you to pause navigation after the preactivation phase.\n         * Used by `RouterModule`.\n         *\n         * @internal\n         */\n        this.afterPreactivation = () => of(void 0);\n        /** @internal */\n        this.rootComponentType = null;\n        const onLoadStart = (r) => this.events.next(new RouteConfigLoadStart(r));\n        const onLoadEnd = (r) => this.events.next(new RouteConfigLoadEnd(r));\n        this.configLoader.onLoadEndListener = onLoadEnd;\n        this.configLoader.onLoadStartListener = onLoadStart;\n    }\n    complete() {\n        this.transitions?.complete();\n    }\n    handleNavigationRequest(request) {\n        const id = ++this.navigationId;\n        this.transitions?.next({ ...this.transitions.value, ...request, id });\n    }\n    setupNavigations(router) {\n        this.transitions = new BehaviorSubject({\n            id: 0,\n            targetPageId: 0,\n            currentUrlTree: router.currentUrlTree,\n            currentRawUrl: router.currentUrlTree,\n            extractedUrl: router.urlHandlingStrategy.extract(router.currentUrlTree),\n            urlAfterRedirects: router.urlHandlingStrategy.extract(router.currentUrlTree),\n            rawUrl: router.currentUrlTree,\n            extras: {},\n            resolve: null,\n            reject: null,\n            promise: Promise.resolve(true),\n            source: IMPERATIVE_NAVIGATION,\n            restoredState: null,\n            currentSnapshot: router.routerState.snapshot,\n            targetSnapshot: null,\n            currentRouterState: router.routerState,\n            targetRouterState: null,\n            guards: { canActivateChecks: [], canDeactivateChecks: [] },\n            guardsResult: null,\n        });\n        return this.transitions.pipe(filter(t => t.id !== 0), \n        // Extract URL\n        map(t => ({ ...t, extractedUrl: router.urlHandlingStrategy.extract(t.rawUrl) })), \n        // Using switchMap so we cancel executing navigations when a new one comes in\n        switchMap(overallTransitionState => {\n            let completed = false;\n            let errored = false;\n            return of(overallTransitionState)\n                .pipe(\n            // Store the Navigation object\n            tap(t => {\n                this.currentNavigation = {\n                    id: t.id,\n                    initialUrl: t.rawUrl,\n                    extractedUrl: t.extractedUrl,\n                    trigger: t.source,\n                    extras: t.extras,\n                    previousNavigation: !this.lastSuccessfulNavigation ? null : {\n                        ...this.lastSuccessfulNavigation,\n                        previousNavigation: null,\n                    },\n                };\n            }), switchMap(t => {\n                const browserUrlTree = router.browserUrlTree.toString();\n                const urlTransition = !router.navigated ||\n                    t.extractedUrl.toString() !== browserUrlTree ||\n                    // Navigations which succeed or ones which fail and are cleaned up\n                    // correctly should result in `browserUrlTree` and `currentUrlTree`\n                    // matching. If this is not the case, assume something went wrong and\n                    // try processing the URL again.\n                    browserUrlTree !== router.currentUrlTree.toString();\n                const onSameUrlNavigation = t.extras.onSameUrlNavigation ?? router.onSameUrlNavigation;\n                if (!urlTransition && onSameUrlNavigation !== 'reload') {\n                    const reason = NG_DEV_MODE$4 ?\n                        `Navigation to ${t.rawUrl} was ignored because it is the same as the current Router URL.` :\n                        '';\n                    this.events.next(new NavigationSkipped(t.id, router.serializeUrl(overallTransitionState.rawUrl), reason, 0 /* NavigationSkippedCode.IgnoredSameUrlNavigation */));\n                    router.rawUrlTree = t.rawUrl;\n                    t.resolve(null);\n                    return EMPTY;\n                }\n                if (router.urlHandlingStrategy.shouldProcessUrl(t.rawUrl)) {\n                    // If the source of the navigation is from a browser event, the URL is\n                    // already updated. We already need to sync the internal state.\n                    if (isBrowserTriggeredNavigation(t.source)) {\n                        router.browserUrlTree = t.extractedUrl;\n                    }\n                    return of(t).pipe(\n                    // Fire NavigationStart event\n                    switchMap(t => {\n                        const transition = this.transitions?.getValue();\n                        this.events.next(new NavigationStart(t.id, this.urlSerializer.serialize(t.extractedUrl), t.source, t.restoredState));\n                        if (transition !== this.transitions?.getValue()) {\n                            return EMPTY;\n                        }\n                        // This delay is required to match old behavior that forced\n                        // navigation to always be async\n                        return Promise.resolve(t);\n                    }), \n                    // ApplyRedirects\n                    applyRedirects(this.environmentInjector, this.configLoader, this.urlSerializer, router.config), \n                    // Update the currentNavigation\n                    // `urlAfterRedirects` is guaranteed to be set after this point\n                    tap(t => {\n                        this.currentNavigation = {\n                            ...this.currentNavigation,\n                            finalUrl: t.urlAfterRedirects\n                        };\n                        overallTransitionState.urlAfterRedirects = t.urlAfterRedirects;\n                    }), \n                    // Recognize\n                    recognize(this.environmentInjector, this.rootComponentType, router.config, this.urlSerializer, router.paramsInheritanceStrategy), \n                    // Update URL if in `eager` update mode\n                    tap(t => {\n                        overallTransitionState.targetSnapshot = t.targetSnapshot;\n                        if (router.urlUpdateStrategy === 'eager') {\n                            if (!t.extras.skipLocationChange) {\n                                const rawUrl = router.urlHandlingStrategy.merge(t.urlAfterRedirects, t.rawUrl);\n                                router.setBrowserUrl(rawUrl, t);\n                            }\n                            router.browserUrlTree = t.urlAfterRedirects;\n                        }\n                        // Fire RoutesRecognized\n                        const routesRecognized = new RoutesRecognized(t.id, this.urlSerializer.serialize(t.extractedUrl), this.urlSerializer.serialize(t.urlAfterRedirects), t.targetSnapshot);\n                        this.events.next(routesRecognized);\n                    }));\n                }\n                else if (urlTransition &&\n                    router.urlHandlingStrategy.shouldProcessUrl(router.rawUrlTree)) {\n                    /* When the current URL shouldn't be processed, but the previous one\n                     * was, we handle this \"error condition\" by navigating to the\n                     * previously successful URL, but leaving the URL intact.*/\n                    const { id, extractedUrl, source, restoredState, extras } = t;\n                    const navStart = new NavigationStart(id, this.urlSerializer.serialize(extractedUrl), source, restoredState);\n                    this.events.next(navStart);\n                    const targetSnapshot = createEmptyState(extractedUrl, this.rootComponentType).snapshot;\n                    overallTransitionState = {\n                        ...t,\n                        targetSnapshot,\n                        urlAfterRedirects: extractedUrl,\n                        extras: { ...extras, skipLocationChange: false, replaceUrl: false },\n                    };\n                    return of(overallTransitionState);\n                }\n                else {\n                    /* When neither the current or previous URL can be processed, do\n                     * nothing other than update router's internal reference to the\n                     * current \"settled\" URL. This way the next navigation will be coming\n                     * from the current URL in the browser.\n                     */\n                    const reason = NG_DEV_MODE$4 ?\n                        `Navigation was ignored because the UrlHandlingStrategy` +\n                            ` indicated neither the current URL ${router.rawUrlTree} nor target URL ${t.rawUrl} should be processed.` :\n                        '';\n                    this.events.next(new NavigationSkipped(t.id, router.serializeUrl(overallTransitionState.extractedUrl), reason, 1 /* NavigationSkippedCode.IgnoredByUrlHandlingStrategy */));\n                    router.rawUrlTree = t.rawUrl;\n                    t.resolve(null);\n                    return EMPTY;\n                }\n            }), \n            // --- GUARDS ---\n            tap(t => {\n                const guardsStart = new GuardsCheckStart(t.id, this.urlSerializer.serialize(t.extractedUrl), this.urlSerializer.serialize(t.urlAfterRedirects), t.targetSnapshot);\n                this.events.next(guardsStart);\n            }), map(t => {\n                overallTransitionState = {\n                    ...t,\n                    guards: getAllRouteGuards(t.targetSnapshot, t.currentSnapshot, this.rootContexts)\n                };\n                return overallTransitionState;\n            }), checkGuards(this.environmentInjector, (evt) => this.events.next(evt)), tap(t => {\n                overallTransitionState.guardsResult = t.guardsResult;\n                if (isUrlTree(t.guardsResult)) {\n                    throw redirectingNavigationError(this.urlSerializer, t.guardsResult);\n                }\n                const guardsEnd = new GuardsCheckEnd(t.id, this.urlSerializer.serialize(t.extractedUrl), this.urlSerializer.serialize(t.urlAfterRedirects), t.targetSnapshot, !!t.guardsResult);\n                this.events.next(guardsEnd);\n            }), filter(t => {\n                if (!t.guardsResult) {\n                    router.restoreHistory(t);\n                    this.cancelNavigationTransition(t, '', 3 /* NavigationCancellationCode.GuardRejected */);\n                    return false;\n                }\n                return true;\n            }), \n            // --- RESOLVE ---\n            switchTap(t => {\n                if (t.guards.canActivateChecks.length) {\n                    return of(t).pipe(tap(t => {\n                        const resolveStart = new ResolveStart(t.id, this.urlSerializer.serialize(t.extractedUrl), this.urlSerializer.serialize(t.urlAfterRedirects), t.targetSnapshot);\n                        this.events.next(resolveStart);\n                    }), switchMap(t => {\n                        let dataResolved = false;\n                        return of(t).pipe(resolveData(router.paramsInheritanceStrategy, this.environmentInjector), tap({\n                            next: () => dataResolved = true,\n                            complete: () => {\n                                if (!dataResolved) {\n                                    router.restoreHistory(t);\n                                    this.cancelNavigationTransition(t, NG_DEV_MODE$4 ?\n                                        `At least one route resolver didn't emit any value.` :\n                                        '', 2 /* NavigationCancellationCode.NoDataFromResolver */);\n                                }\n                            }\n                        }));\n                    }), tap(t => {\n                        const resolveEnd = new ResolveEnd(t.id, this.urlSerializer.serialize(t.extractedUrl), this.urlSerializer.serialize(t.urlAfterRedirects), t.targetSnapshot);\n                        this.events.next(resolveEnd);\n                    }));\n                }\n                return undefined;\n            }), \n            // --- LOAD COMPONENTS ---\n            switchTap((t) => {\n                const loadComponents = (route) => {\n                    const loaders = [];\n                    if (route.routeConfig?.loadComponent &&\n                        !route.routeConfig._loadedComponent) {\n                        loaders.push(this.configLoader.loadComponent(route.routeConfig)\n                            .pipe(tap(loadedComponent => {\n                            route.component = loadedComponent;\n                        }), map(() => void 0)));\n                    }\n                    for (const child of route.children) {\n                        loaders.push(...loadComponents(child));\n                    }\n                    return loaders;\n                };\n                return combineLatest(loadComponents(t.targetSnapshot.root))\n                    .pipe(defaultIfEmpty(), take(1));\n            }), switchTap(() => this.afterPreactivation()), map((t) => {\n                const targetRouterState = createRouterState(router.routeReuseStrategy, t.targetSnapshot, t.currentRouterState);\n                overallTransitionState = { ...t, targetRouterState };\n                return (overallTransitionState);\n            }), \n            /* Once here, we are about to activate synchronously. The assumption is\n               this will succeed, and user code may read from the Router service.\n               Therefore before activation, we need to update router properties storing\n               the current URL and the RouterState, as well as updated the browser URL.\n               All this should happen *before* activating. */\n            tap((t) => {\n                router.currentUrlTree = t.urlAfterRedirects;\n                router.rawUrlTree =\n                    router.urlHandlingStrategy.merge(t.urlAfterRedirects, t.rawUrl);\n                router.routerState =\n                    t.targetRouterState;\n                if (router.urlUpdateStrategy === 'deferred') {\n                    if (!t.extras.skipLocationChange) {\n                        router.setBrowserUrl(router.rawUrlTree, t);\n                    }\n                    router.browserUrlTree = t.urlAfterRedirects;\n                }\n            }), activateRoutes(this.rootContexts, router.routeReuseStrategy, (evt) => this.events.next(evt)), \n            // Ensure that if some observable used to drive the transition doesn't\n            // complete, the navigation still finalizes This should never happen, but\n            // this is done as a safety measure to avoid surfacing this error (#49567).\n            take(1), tap({\n                next: (t) => {\n                    completed = true;\n                    this.lastSuccessfulNavigation = this.currentNavigation;\n                    router.navigated = true;\n                    this.events.next(new NavigationEnd(t.id, this.urlSerializer.serialize(t.extractedUrl), this.urlSerializer.serialize(router.currentUrlTree)));\n                    router.titleStrategy?.updateTitle(t.targetRouterState.snapshot);\n                    t.resolve(true);\n                },\n                complete: () => {\n                    completed = true;\n                }\n            }), finalize(() => {\n                /* When the navigation stream finishes either through error or success,\n                 * we set the `completed` or `errored` flag. However, there are some\n                 * situations where we could get here without either of those being set.\n                 * For instance, a redirect during NavigationStart. Therefore, this is a\n                 * catch-all to make sure the NavigationCancel event is fired when a\n                 * navigation gets cancelled but not caught by other means. */\n                if (!completed && !errored) {\n                    const cancelationReason = NG_DEV_MODE$4 ?\n                        `Navigation ID ${overallTransitionState\n                            .id} is not equal to the current navigation id ${this.navigationId}` :\n                        '';\n                    this.cancelNavigationTransition(overallTransitionState, cancelationReason, 1 /* NavigationCancellationCode.SupersededByNewNavigation */);\n                }\n                // Only clear current navigation if it is still set to the one that\n                // finalized.\n                if (this.currentNavigation?.id === overallTransitionState.id) {\n                    this.currentNavigation = null;\n                }\n            }), catchError((e) => {\n                errored = true;\n                /* This error type is issued during Redirect, and is handled as a\n                 * cancellation rather than an error. */\n                if (isNavigationCancelingError$1(e)) {\n                    if (!isRedirectingNavigationCancelingError$1(e)) {\n                        // Set property only if we're not redirecting. If we landed on a page\n                        // and redirect to `/` route, the new navigation is going to see the\n                        // `/` isn't a change from the default currentUrlTree and won't\n                        // navigate. This is only applicable with initial navigation, so\n                        // setting `navigated` only when not redirecting resolves this\n                        // scenario.\n                        router.navigated = true;\n                        router.restoreHistory(overallTransitionState, true);\n                    }\n                    const navCancel = new NavigationCancel(overallTransitionState.id, this.urlSerializer.serialize(overallTransitionState.extractedUrl), e.message, e.cancellationCode);\n                    this.events.next(navCancel);\n                    // When redirecting, we need to delay resolving the navigation\n                    // promise and push it to the redirect navigation\n                    if (!isRedirectingNavigationCancelingError$1(e)) {\n                        overallTransitionState.resolve(false);\n                    }\n                    else {\n                        const mergedTree = router.urlHandlingStrategy.merge(e.url, router.rawUrlTree);\n                        const extras = {\n                            skipLocationChange: overallTransitionState.extras.skipLocationChange,\n                            // The URL is already updated at this point if we have 'eager' URL\n                            // updates or if the navigation was triggered by the browser (back\n                            // button, URL bar, etc). We want to replace that item in history\n                            // if the navigation is rejected.\n                            replaceUrl: router.urlUpdateStrategy === 'eager' ||\n                                isBrowserTriggeredNavigation(overallTransitionState.source)\n                        };\n                        router.scheduleNavigation(mergedTree, IMPERATIVE_NAVIGATION, null, extras, {\n                            resolve: overallTransitionState.resolve,\n                            reject: overallTransitionState.reject,\n                            promise: overallTransitionState.promise\n                        });\n                    }\n                    /* All other errors should reset to the router's internal URL reference\n                     * to the pre-error state. */\n                }\n                else {\n                    router.restoreHistory(overallTransitionState, true);\n                    const navError = new NavigationError(overallTransitionState.id, this.urlSerializer.serialize(overallTransitionState.extractedUrl), e, overallTransitionState.targetSnapshot ?? undefined);\n                    this.events.next(navError);\n                    try {\n                        overallTransitionState.resolve(router.errorHandler(e));\n                    }\n                    catch (ee) {\n                        overallTransitionState.reject(ee);\n                    }\n                }\n                return EMPTY;\n            }));\n            // casting because `pipe` returns observable({}) when called with 8+ arguments\n        }));\n    }\n    cancelNavigationTransition(t, reason, code) {\n        const navCancel = new NavigationCancel(t.id, this.urlSerializer.serialize(t.extractedUrl), reason, code);\n        this.events.next(navCancel);\n        t.resolve(false);\n    }\n}\nNavigationTransitions.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: NavigationTransitions, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nNavigationTransitions.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: NavigationTransitions, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: NavigationTransitions, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return []; } });\nfunction isBrowserTriggeredNavigation(source) {\n    return source !== IMPERATIVE_NAVIGATION;\n}\n\n/**\n * Provides a strategy for setting the page title after a router navigation.\n *\n * The built-in implementation traverses the router state snapshot and finds the deepest primary\n * outlet with `title` property. Given the `Routes` below, navigating to\n * `/base/child(popup:aux)` would result in the document title being set to \"child\".\n * ```\n * [\n *   {path: 'base', title: 'base', children: [\n *     {path: 'child', title: 'child'},\n *   ],\n *   {path: 'aux', outlet: 'popup', title: 'popupTitle'}\n * ]\n * ```\n *\n * This class can be used as a base class for custom title strategies. That is, you can create your\n * own class that extends the `TitleStrategy`. Note that in the above example, the `title`\n * from the named outlet is never used. However, a custom strategy might be implemented to\n * incorporate titles in named outlets.\n *\n * @publicApi\n * @see [Page title guide](guide/router#setting-the-page-title)\n */\nclass TitleStrategy {\n    /**\n     * @returns The `title` of the deepest primary route.\n     */\n    buildTitle(snapshot) {\n        let pageTitle;\n        let route = snapshot.root;\n        while (route !== undefined) {\n            pageTitle = this.getResolvedTitleForRoute(route) ?? pageTitle;\n            route = route.children.find(child => child.outlet === PRIMARY_OUTLET);\n        }\n        return pageTitle;\n    }\n    /**\n     * Given an `ActivatedRouteSnapshot`, returns the final value of the\n     * `Route.title` property, which can either be a static string or a resolved value.\n     */\n    getResolvedTitleForRoute(snapshot) {\n        return snapshot.data[RouteTitleKey];\n    }\n}\nTitleStrategy.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: TitleStrategy, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nTitleStrategy.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: TitleStrategy, providedIn: 'root', useFactory: () => inject(DefaultTitleStrategy) });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: TitleStrategy, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root', useFactory: () => inject(DefaultTitleStrategy) }]\n        }] });\n/**\n * The default `TitleStrategy` used by the router that updates the title using the `Title` service.\n */\nclass DefaultTitleStrategy extends TitleStrategy {\n    constructor(title) {\n        super();\n        this.title = title;\n    }\n    /**\n     * Sets the title of the browser to the given value.\n     *\n     * @param title The `pageTitle` from the deepest primary route.\n     */\n    updateTitle(snapshot) {\n        const title = this.buildTitle(snapshot);\n        if (title !== undefined) {\n            this.title.setTitle(title);\n        }\n    }\n}\nDefaultTitleStrategy.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DefaultTitleStrategy, deps: [{ token: i1.Title }], target: i0.ɵɵFactoryTarget.Injectable });\nDefaultTitleStrategy.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DefaultTitleStrategy, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DefaultTitleStrategy, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return [{ type: i1.Title }]; } });\n\n/**\n * @description\n *\n * Provides a way to customize when activated routes get reused.\n *\n * @publicApi\n */\nclass RouteReuseStrategy {\n}\nRouteReuseStrategy.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouteReuseStrategy, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nRouteReuseStrategy.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouteReuseStrategy, providedIn: 'root', useFactory: () => inject(DefaultRouteReuseStrategy) });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouteReuseStrategy, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root', useFactory: () => inject(DefaultRouteReuseStrategy) }]\n        }] });\n/**\n * @description\n *\n * This base route reuse strategy only reuses routes when the matched router configs are\n * identical. This prevents components from being destroyed and recreated\n * when just the route parameters, query parameters or fragment change\n * (that is, the existing component is _reused_).\n *\n * This strategy does not store any routes for later reuse.\n *\n * Angular uses this strategy by default.\n *\n *\n * It can be used as a base class for custom route reuse strategies, i.e. you can create your own\n * class that extends the `BaseRouteReuseStrategy` one.\n * @publicApi\n */\nclass BaseRouteReuseStrategy {\n    /**\n     * Whether the given route should detach for later reuse.\n     * Always returns false for `BaseRouteReuseStrategy`.\n     * */\n    shouldDetach(route) {\n        return false;\n    }\n    /**\n     * A no-op; the route is never stored since this strategy never detaches routes for later re-use.\n     */\n    store(route, detachedTree) { }\n    /** Returns `false`, meaning the route (and its subtree) is never reattached */\n    shouldAttach(route) {\n        return false;\n    }\n    /** Returns `null` because this strategy does not store routes for later re-use. */\n    retrieve(route) {\n        return null;\n    }\n    /**\n     * Determines if a route should be reused.\n     * This strategy returns `true` when the future route config and current route config are\n     * identical.\n     */\n    shouldReuseRoute(future, curr) {\n        return future.routeConfig === curr.routeConfig;\n    }\n}\nclass DefaultRouteReuseStrategy extends BaseRouteReuseStrategy {\n}\nDefaultRouteReuseStrategy.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DefaultRouteReuseStrategy, deps: null, target: i0.ɵɵFactoryTarget.Injectable });\nDefaultRouteReuseStrategy.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DefaultRouteReuseStrategy, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DefaultRouteReuseStrategy, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }] });\n\nconst NG_DEV_MODE$3 = typeof ngDevMode === 'undefined' || !!ngDevMode;\n/**\n * A [DI token](guide/glossary/#di-token) for the router service.\n *\n * @publicApi\n */\nconst ROUTER_CONFIGURATION = new InjectionToken(NG_DEV_MODE$3 ? 'router config' : '', {\n    providedIn: 'root',\n    factory: () => ({}),\n});\n\n/**\n * @description\n *\n * Provides a way to migrate AngularJS applications to Angular.\n *\n * @publicApi\n */\nclass UrlHandlingStrategy {\n}\nUrlHandlingStrategy.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: UrlHandlingStrategy, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nUrlHandlingStrategy.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: UrlHandlingStrategy, providedIn: 'root', useFactory: () => inject(DefaultUrlHandlingStrategy) });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: UrlHandlingStrategy, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root', useFactory: () => inject(DefaultUrlHandlingStrategy) }]\n        }] });\n/**\n * @publicApi\n */\nclass DefaultUrlHandlingStrategy {\n    shouldProcessUrl(url) {\n        return true;\n    }\n    extract(url) {\n        return url;\n    }\n    merge(newUrlPart, wholeUrl) {\n        return newUrlPart;\n    }\n}\nDefaultUrlHandlingStrategy.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DefaultUrlHandlingStrategy, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nDefaultUrlHandlingStrategy.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DefaultUrlHandlingStrategy, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: DefaultUrlHandlingStrategy, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }] });\n\nconst NG_DEV_MODE$2 = typeof ngDevMode === 'undefined' || !!ngDevMode;\nfunction defaultErrorHandler(error) {\n    throw error;\n}\nfunction defaultMalformedUriErrorHandler(error, urlSerializer, url) {\n    return urlSerializer.parse('/');\n}\n/**\n * The equivalent `IsActiveMatchOptions` options for `Router.isActive` is called with `true`\n * (exact = true).\n */\nconst exactMatchOptions = {\n    paths: 'exact',\n    fragment: 'ignored',\n    matrixParams: 'ignored',\n    queryParams: 'exact'\n};\n/**\n * The equivalent `IsActiveMatchOptions` options for `Router.isActive` is called with `false`\n * (exact = false).\n */\nconst subsetMatchOptions = {\n    paths: 'subset',\n    fragment: 'ignored',\n    matrixParams: 'ignored',\n    queryParams: 'subset'\n};\n/**\n * @description\n *\n * A service that provides navigation among views and URL manipulation capabilities.\n *\n * @see `Route`.\n * @see [Routing and Navigation Guide](guide/router).\n *\n * @ngModule RouterModule\n *\n * @publicApi\n */\nclass Router {\n    // TODO(b/260747083): This should not exist and navigationId should be private in\n    // `NavigationTransitions`\n    get navigationId() {\n        return this.navigationTransitions.navigationId;\n    }\n    /**\n     * The ɵrouterPageId of whatever page is currently active in the browser history. This is\n     * important for computing the target page id for new navigations because we need to ensure each\n     * page id in the browser history is 1 more than the previous entry.\n     */\n    get browserPageId() {\n        if (this.canceledNavigationResolution !== 'computed') {\n            return undefined;\n        }\n        return this.location.getState()?.ɵrouterPageId;\n    }\n    /**\n     * An event stream for routing events.\n     */\n    get events() {\n        // TODO(atscott): This _should_ be events.asObservable(). However, this change requires internal\n        // cleanup: tests are doing `(route.events as Subject<Event>).next(...)`. This isn't\n        // allowed/supported but we still have to fix these or file bugs against the teams before making\n        // the change.\n        return this.navigationTransitions.events;\n    }\n    constructor() {\n        this.disposed = false;\n        /**\n         * The id of the currently active page in the router.\n         * Updated to the transition's target id on a successful navigation.\n         *\n         * This is used to track what page the router last activated. When an attempted navigation fails,\n         * the router can then use this to compute how to restore the state back to the previously active\n         * page.\n         */\n        this.currentPageId = 0;\n        this.console = inject(ɵConsole);\n        this.isNgZoneEnabled = false;\n        this.options = inject(ROUTER_CONFIGURATION, { optional: true }) || {};\n        /**\n         * A handler for navigation errors in this NgModule.\n         *\n         * @deprecated Subscribe to the `Router` events and watch for `NavigationError` instead.\n         *   `provideRouter` has the `withNavigationErrorHandler` feature to make this easier.\n         * @see `withNavigationErrorHandler`\n         */\n        this.errorHandler = this.options.errorHandler || defaultErrorHandler;\n        /**\n         * A handler for errors thrown by `Router.parseUrl(url)`\n         * when `url` contains an invalid character.\n         * The most common case is a `%` sign\n         * that's not encoded and is not part of a percent encoded sequence.\n         *\n         * @deprecated URI parsing errors should be handled in the `UrlSerializer`.\n         *\n         * @see `RouterModule`\n         */\n        this.malformedUriErrorHandler = this.options.malformedUriErrorHandler || defaultMalformedUriErrorHandler;\n        /**\n         * True if at least one navigation event has occurred,\n         * false otherwise.\n         */\n        this.navigated = false;\n        this.lastSuccessfulId = -1;\n        /**\n         * A strategy for extracting and merging URLs.\n         * Used for AngularJS to Angular migrations.\n         *\n         * @deprecated Configure using `providers` instead:\n         *   `{provide: UrlHandlingStrategy, useClass: MyStrategy}`.\n         */\n        this.urlHandlingStrategy = inject(UrlHandlingStrategy);\n        /**\n         * A strategy for re-using routes.\n         *\n         * @deprecated Configure using `providers` instead:\n         *   `{provide: RouteReuseStrategy, useClass: MyStrategy}`.\n         */\n        this.routeReuseStrategy = inject(RouteReuseStrategy);\n        /** Strategy used to create a UrlTree. */\n        this.urlCreationStrategy = inject(CreateUrlTreeStrategy);\n        /**\n         * A strategy for setting the title based on the `routerState`.\n         *\n         * @deprecated Configure using `providers` instead:\n         *   `{provide: TitleStrategy, useClass: MyStrategy}`.\n         */\n        this.titleStrategy = inject(TitleStrategy);\n        /**\n         * How to handle a navigation request to the current URL.\n         *\n         *\n         * @deprecated Configure this through `provideRouter` or `RouterModule.forRoot` instead.\n         * @see `withRouterConfig`\n         * @see `provideRouter`\n         * @see `RouterModule`\n         */\n        this.onSameUrlNavigation = this.options.onSameUrlNavigation || 'ignore';\n        /**\n         * How to merge parameters, data, resolved data, and title from parent to child\n         * routes. One of:\n         *\n         * - `'emptyOnly'` : Inherit parent parameters, data, and resolved data\n         * for path-less or component-less routes.\n         * - `'always'` : Inherit parent parameters, data, and resolved data\n         * for all child routes.\n         *\n         * @deprecated Configure this through `provideRouter` or `RouterModule.forRoot` instead.\n         * @see `withRouterConfig`\n         * @see `provideRouter`\n         * @see `RouterModule`\n         */\n        this.paramsInheritanceStrategy = this.options.paramsInheritanceStrategy || 'emptyOnly';\n        /**\n         * Determines when the router updates the browser URL.\n         * By default (`\"deferred\"`), updates the browser URL after navigation has finished.\n         * Set to `'eager'` to update the browser URL at the beginning of navigation.\n         * You can choose to update early so that, if navigation fails,\n         * you can show an error message with the URL that failed.\n         *\n         * @deprecated Configure this through `provideRouter` or `RouterModule.forRoot` instead.\n         * @see `withRouterConfig`\n         * @see `provideRouter`\n         * @see `RouterModule`\n         */\n        this.urlUpdateStrategy = this.options.urlUpdateStrategy || 'deferred';\n        /**\n         * Configures how the Router attempts to restore state when a navigation is cancelled.\n         *\n         * 'replace' - Always uses `location.replaceState` to set the browser state to the state of the\n         * router before the navigation started. This means that if the URL of the browser is updated\n         * _before_ the navigation is canceled, the Router will simply replace the item in history rather\n         * than trying to restore to the previous location in the session history. This happens most\n         * frequently with `urlUpdateStrategy: 'eager'` and navigations with the browser back/forward\n         * buttons.\n         *\n         * 'computed' - Will attempt to return to the same index in the session history that corresponds\n         * to the Angular route when the navigation gets cancelled. For example, if the browser back\n         * button is clicked and the navigation is cancelled, the Router will trigger a forward navigation\n         * and vice versa.\n         *\n         * Note: the 'computed' option is incompatible with any `UrlHandlingStrategy` which only\n         * handles a portion of the URL because the history restoration navigates to the previous place in\n         * the browser history rather than simply resetting a portion of the URL.\n         *\n         * The default value is `replace`.\n         *\n         * @deprecated Configure this through `provideRouter` or `RouterModule.forRoot` instead.\n         * @see `withRouterConfig`\n         * @see `provideRouter`\n         * @see `RouterModule`\n         */\n        this.canceledNavigationResolution = this.options.canceledNavigationResolution || 'replace';\n        this.config = flatten(inject(ROUTES, { optional: true }) ?? []);\n        this.navigationTransitions = inject(NavigationTransitions);\n        this.urlSerializer = inject(UrlSerializer);\n        this.location = inject(Location);\n        this.isNgZoneEnabled = inject(NgZone) instanceof NgZone && NgZone.isInAngularZone();\n        this.resetConfig(this.config);\n        this.currentUrlTree = new UrlTree();\n        this.rawUrlTree = this.currentUrlTree;\n        this.browserUrlTree = this.currentUrlTree;\n        this.routerState = createEmptyState(this.currentUrlTree, null);\n        this.navigationTransitions.setupNavigations(this).subscribe(t => {\n            this.lastSuccessfulId = t.id;\n            this.currentPageId = this.browserPageId ?? 0;\n        }, e => {\n            this.console.warn(`Unhandled Navigation Error: ${e}`);\n        });\n    }\n    /** @internal */\n    resetRootComponentType(rootComponentType) {\n        // TODO: vsavkin router 4.0 should make the root component set to null\n        // this will simplify the lifecycle of the router.\n        this.routerState.root.component = rootComponentType;\n        this.navigationTransitions.rootComponentType = rootComponentType;\n    }\n    /**\n     * Sets up the location change listener and performs the initial navigation.\n     */\n    initialNavigation() {\n        this.setUpLocationChangeListener();\n        if (!this.navigationTransitions.hasRequestedNavigation) {\n            const state = this.location.getState();\n            this.navigateToSyncWithBrowser(this.location.path(true), IMPERATIVE_NAVIGATION, state);\n        }\n    }\n    /**\n     * Sets up the location change listener. This listener detects navigations triggered from outside\n     * the Router (the browser back/forward buttons, for example) and schedules a corresponding Router\n     * navigation so that the correct events, guards, etc. are triggered.\n     */\n    setUpLocationChangeListener() {\n        // Don't need to use Zone.wrap any more, because zone.js\n        // already patch onPopState, so location change callback will\n        // run into ngZone\n        if (!this.locationSubscription) {\n            this.locationSubscription = this.location.subscribe(event => {\n                const source = event['type'] === 'popstate' ? 'popstate' : 'hashchange';\n                if (source === 'popstate') {\n                    // The `setTimeout` was added in #12160 and is likely to support Angular/AngularJS\n                    // hybrid apps.\n                    setTimeout(() => {\n                        this.navigateToSyncWithBrowser(event['url'], source, event.state);\n                    }, 0);\n                }\n            });\n        }\n    }\n    /**\n     * Schedules a router navigation to synchronize Router state with the browser state.\n     *\n     * This is done as a response to a popstate event and the initial navigation. These\n     * two scenarios represent times when the browser URL/state has been updated and\n     * the Router needs to respond to ensure its internal state matches.\n     */\n    navigateToSyncWithBrowser(url, source, state) {\n        const extras = { replaceUrl: true };\n        // TODO: restoredState should always include the entire state, regardless\n        // of navigationId. This requires a breaking change to update the type on\n        // NavigationStart’s restoredState, which currently requires navigationId\n        // to always be present. The Router used to only restore history state if\n        // a navigationId was present.\n        // The stored navigationId is used by the RouterScroller to retrieve the scroll\n        // position for the page.\n        const restoredState = state?.navigationId ? state : null;\n        // Separate to NavigationStart.restoredState, we must also restore the state to\n        // history.state and generate a new navigationId, since it will be overwritten\n        if (state) {\n            const stateCopy = { ...state };\n            delete stateCopy.navigationId;\n            delete stateCopy.ɵrouterPageId;\n            if (Object.keys(stateCopy).length !== 0) {\n                extras.state = stateCopy;\n            }\n        }\n        const urlTree = this.parseUrl(url);\n        this.scheduleNavigation(urlTree, source, restoredState, extras);\n    }\n    /** The current URL. */\n    get url() {\n        return this.serializeUrl(this.currentUrlTree);\n    }\n    /**\n     * Returns the current `Navigation` object when the router is navigating,\n     * and `null` when idle.\n     */\n    getCurrentNavigation() {\n        return this.navigationTransitions.currentNavigation;\n    }\n    /**\n     * Resets the route configuration used for navigation and generating links.\n     *\n     * @param config The route array for the new configuration.\n     *\n     * @usageNotes\n     *\n     * ```\n     * router.resetConfig([\n     *  { path: 'team/:id', component: TeamCmp, children: [\n     *    { path: 'simple', component: SimpleCmp },\n     *    { path: 'user/:name', component: UserCmp }\n     *  ]}\n     * ]);\n     * ```\n     */\n    resetConfig(config) {\n        NG_DEV_MODE$2 && validateConfig(config);\n        this.config = config.map(standardizeConfig);\n        this.navigated = false;\n        this.lastSuccessfulId = -1;\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        this.dispose();\n    }\n    /** Disposes of the router. */\n    dispose() {\n        this.navigationTransitions.complete();\n        if (this.locationSubscription) {\n            this.locationSubscription.unsubscribe();\n            this.locationSubscription = undefined;\n        }\n        this.disposed = true;\n    }\n    /**\n     * Appends URL segments to the current URL tree to create a new URL tree.\n     *\n     * @param commands An array of URL fragments with which to construct the new URL tree.\n     * If the path is static, can be the literal URL string. For a dynamic path, pass an array of path\n     * segments, followed by the parameters for each segment.\n     * The fragments are applied to the current URL tree or the one provided  in the `relativeTo`\n     * property of the options object, if supplied.\n     * @param navigationExtras Options that control the navigation strategy.\n     * @returns The new URL tree.\n     *\n     * @usageNotes\n     *\n     * ```\n     * // create /team/33/user/11\n     * router.createUrlTree(['/team', 33, 'user', 11]);\n     *\n     * // create /team/33;expand=true/user/11\n     * router.createUrlTree(['/team', 33, {expand: true}, 'user', 11]);\n     *\n     * // you can collapse static segments like this (this works only with the first passed-in value):\n     * router.createUrlTree(['/team/33/user', userId]);\n     *\n     * // If the first segment can contain slashes, and you do not want the router to split it,\n     * // you can do the following:\n     * router.createUrlTree([{segmentPath: '/one/two'}]);\n     *\n     * // create /team/33/(user/11//right:chat)\n     * router.createUrlTree(['/team', 33, {outlets: {primary: 'user/11', right: 'chat'}}]);\n     *\n     * // remove the right secondary node\n     * router.createUrlTree(['/team', 33, {outlets: {primary: 'user/11', right: null}}]);\n     *\n     * // assuming the current url is `/team/33/user/11` and the route points to `user/11`\n     *\n     * // navigate to /team/33/user/11/details\n     * router.createUrlTree(['details'], {relativeTo: route});\n     *\n     * // navigate to /team/33/user/22\n     * router.createUrlTree(['../22'], {relativeTo: route});\n     *\n     * // navigate to /team/44/user/22\n     * router.createUrlTree(['../../team/44/user/22'], {relativeTo: route});\n     *\n     * Note that a value of `null` or `undefined` for `relativeTo` indicates that the\n     * tree should be created relative to the root.\n     * ```\n     */\n    createUrlTree(commands, navigationExtras = {}) {\n        const { relativeTo, queryParams, fragment, queryParamsHandling, preserveFragment } = navigationExtras;\n        const f = preserveFragment ? this.currentUrlTree.fragment : fragment;\n        let q = null;\n        switch (queryParamsHandling) {\n            case 'merge':\n                q = { ...this.currentUrlTree.queryParams, ...queryParams };\n                break;\n            case 'preserve':\n                q = this.currentUrlTree.queryParams;\n                break;\n            default:\n                q = queryParams || null;\n        }\n        if (q !== null) {\n            q = this.removeEmptyProps(q);\n        }\n        return this.urlCreationStrategy.createUrlTree(relativeTo, this.routerState, this.currentUrlTree, commands, q, f ?? null);\n    }\n    /**\n     * Navigates to a view using an absolute route path.\n     *\n     * @param url An absolute path for a defined route. The function does not apply any delta to the\n     *     current URL.\n     * @param extras An object containing properties that modify the navigation strategy.\n     *\n     * @returns A Promise that resolves to 'true' when navigation succeeds,\n     * to 'false' when navigation fails, or is rejected on error.\n     *\n     * @usageNotes\n     *\n     * The following calls request navigation to an absolute path.\n     *\n     * ```\n     * router.navigateByUrl(\"/team/33/user/11\");\n     *\n     * // Navigate without updating the URL\n     * router.navigateByUrl(\"/team/33/user/11\", { skipLocationChange: true });\n     * ```\n     *\n     * @see [Routing and Navigation guide](guide/router)\n     *\n     */\n    navigateByUrl(url, extras = {\n        skipLocationChange: false\n    }) {\n        if (NG_DEV_MODE$2) {\n            if (this.isNgZoneEnabled && !NgZone.isInAngularZone()) {\n                this.console.warn(`Navigation triggered outside Angular zone, did you forget to call 'ngZone.run()'?`);\n            }\n            if (url instanceof UrlTree && url._warnIfUsedForNavigation) {\n                this.console.warn(url._warnIfUsedForNavigation);\n            }\n        }\n        const urlTree = isUrlTree(url) ? url : this.parseUrl(url);\n        const mergedTree = this.urlHandlingStrategy.merge(urlTree, this.rawUrlTree);\n        return this.scheduleNavigation(mergedTree, IMPERATIVE_NAVIGATION, null, extras);\n    }\n    /**\n     * Navigate based on the provided array of commands and a starting point.\n     * If no starting route is provided, the navigation is absolute.\n     *\n     * @param commands An array of URL fragments with which to construct the target URL.\n     * If the path is static, can be the literal URL string. For a dynamic path, pass an array of path\n     * segments, followed by the parameters for each segment.\n     * The fragments are applied to the current URL or the one provided  in the `relativeTo` property\n     * of the options object, if supplied.\n     * @param extras An options object that determines how the URL should be constructed or\n     *     interpreted.\n     *\n     * @returns A Promise that resolves to `true` when navigation succeeds, to `false` when navigation\n     *     fails,\n     * or is rejected on error.\n     *\n     * @usageNotes\n     *\n     * The following calls request navigation to a dynamic route path relative to the current URL.\n     *\n     * ```\n     * router.navigate(['team', 33, 'user', 11], {relativeTo: route});\n     *\n     * // Navigate without updating the URL, overriding the default behavior\n     * router.navigate(['team', 33, 'user', 11], {relativeTo: route, skipLocationChange: true});\n     * ```\n     *\n     * @see [Routing and Navigation guide](guide/router)\n     *\n     */\n    navigate(commands, extras = { skipLocationChange: false }) {\n        validateCommands(commands);\n        return this.navigateByUrl(this.createUrlTree(commands, extras), extras);\n    }\n    /** Serializes a `UrlTree` into a string */\n    serializeUrl(url) {\n        return this.urlSerializer.serialize(url);\n    }\n    /** Parses a string into a `UrlTree` */\n    parseUrl(url) {\n        let urlTree;\n        try {\n            urlTree = this.urlSerializer.parse(url);\n        }\n        catch (e) {\n            urlTree = this.malformedUriErrorHandler(e, this.urlSerializer, url);\n        }\n        return urlTree;\n    }\n    isActive(url, matchOptions) {\n        let options;\n        if (matchOptions === true) {\n            options = { ...exactMatchOptions };\n        }\n        else if (matchOptions === false) {\n            options = { ...subsetMatchOptions };\n        }\n        else {\n            options = matchOptions;\n        }\n        if (isUrlTree(url)) {\n            return containsTree(this.currentUrlTree, url, options);\n        }\n        const urlTree = this.parseUrl(url);\n        return containsTree(this.currentUrlTree, urlTree, options);\n    }\n    removeEmptyProps(params) {\n        return Object.keys(params).reduce((result, key) => {\n            const value = params[key];\n            if (value !== null && value !== undefined) {\n                result[key] = value;\n            }\n            return result;\n        }, {});\n    }\n    /** @internal */\n    scheduleNavigation(rawUrl, source, restoredState, extras, priorPromise) {\n        if (this.disposed) {\n            return Promise.resolve(false);\n        }\n        let resolve;\n        let reject;\n        let promise;\n        if (priorPromise) {\n            resolve = priorPromise.resolve;\n            reject = priorPromise.reject;\n            promise = priorPromise.promise;\n        }\n        else {\n            promise = new Promise((res, rej) => {\n                resolve = res;\n                reject = rej;\n            });\n        }\n        let targetPageId;\n        if (this.canceledNavigationResolution === 'computed') {\n            // If the `ɵrouterPageId` exist in the state then `targetpageId` should have the value of\n            // `ɵrouterPageId`. This is the case for something like a page refresh where we assign the\n            // target id to the previously set value for that page.\n            if (restoredState && restoredState.ɵrouterPageId) {\n                targetPageId = restoredState.ɵrouterPageId;\n            }\n            else {\n                // Otherwise, targetPageId should be the next number in the event of a `pushState`\n                // navigation.\n                targetPageId = (this.browserPageId ?? 0) + 1;\n            }\n        }\n        else {\n            // This is unused when `canceledNavigationResolution` is not computed.\n            targetPageId = 0;\n        }\n        this.navigationTransitions.handleNavigationRequest({\n            targetPageId,\n            source,\n            restoredState,\n            currentUrlTree: this.currentUrlTree,\n            currentRawUrl: this.currentUrlTree,\n            rawUrl,\n            extras,\n            resolve,\n            reject,\n            promise,\n            currentSnapshot: this.routerState.snapshot,\n            currentRouterState: this.routerState\n        });\n        // Make sure that the error is propagated even though `processNavigations` catch\n        // handler does not rethrow\n        return promise.catch((e) => {\n            return Promise.reject(e);\n        });\n    }\n    /** @internal */\n    setBrowserUrl(url, transition) {\n        const path = this.urlSerializer.serialize(url);\n        if (this.location.isCurrentPathEqualTo(path) || !!transition.extras.replaceUrl) {\n            // replacements do not update the target page\n            const currentBrowserPageId = this.browserPageId;\n            const state = {\n                ...transition.extras.state,\n                ...this.generateNgRouterState(transition.id, currentBrowserPageId)\n            };\n            this.location.replaceState(path, '', state);\n        }\n        else {\n            const state = {\n                ...transition.extras.state,\n                ...this.generateNgRouterState(transition.id, transition.targetPageId)\n            };\n            this.location.go(path, '', state);\n        }\n    }\n    /**\n     * Performs the necessary rollback action to restore the browser URL to the\n     * state before the transition.\n     * @internal\n     */\n    restoreHistory(transition, restoringFromCaughtError = false) {\n        if (this.canceledNavigationResolution === 'computed') {\n            const currentBrowserPageId = this.browserPageId ?? this.currentPageId;\n            const targetPagePosition = this.currentPageId - currentBrowserPageId;\n            if (targetPagePosition !== 0) {\n                this.location.historyGo(targetPagePosition);\n            }\n            else if (this.currentUrlTree === this.getCurrentNavigation()?.finalUrl &&\n                targetPagePosition === 0) {\n                // We got to the activation stage (where currentUrlTree is set to the navigation's\n                // finalUrl), but we weren't moving anywhere in history (skipLocationChange or replaceUrl).\n                // We still need to reset the router state back to what it was when the navigation started.\n                this.resetState(transition);\n                // TODO(atscott): resetting the `browserUrlTree` should really be done in `resetState`.\n                // Investigate if this can be done by running TGP.\n                this.browserUrlTree = transition.currentUrlTree;\n                this.resetUrlToCurrentUrlTree();\n            }\n            else {\n                // The browser URL and router state was not updated before the navigation cancelled so\n                // there's no restoration needed.\n            }\n        }\n        else if (this.canceledNavigationResolution === 'replace') {\n            // TODO(atscott): It seems like we should _always_ reset the state here. It would be a no-op\n            // for `deferred` navigations that haven't change the internal state yet because guards\n            // reject. For 'eager' navigations, it seems like we also really should reset the state\n            // because the navigation was cancelled. Investigate if this can be done by running TGP.\n            if (restoringFromCaughtError) {\n                this.resetState(transition);\n            }\n            this.resetUrlToCurrentUrlTree();\n        }\n    }\n    resetState(t) {\n        this.routerState = t.currentRouterState;\n        this.currentUrlTree = t.currentUrlTree;\n        // Note here that we use the urlHandlingStrategy to get the reset `rawUrlTree` because it may be\n        // configured to handle only part of the navigation URL. This means we would only want to reset\n        // the part of the navigation handled by the Angular router rather than the whole URL. In\n        // addition, the URLHandlingStrategy may be configured to specifically preserve parts of the URL\n        // when merging, such as the query params so they are not lost on a refresh.\n        this.rawUrlTree = this.urlHandlingStrategy.merge(this.currentUrlTree, t.rawUrl);\n    }\n    resetUrlToCurrentUrlTree() {\n        this.location.replaceState(this.urlSerializer.serialize(this.rawUrlTree), '', this.generateNgRouterState(this.lastSuccessfulId, this.currentPageId));\n    }\n    generateNgRouterState(navigationId, routerPageId) {\n        if (this.canceledNavigationResolution === 'computed') {\n            return { navigationId, ɵrouterPageId: routerPageId };\n        }\n        return { navigationId };\n    }\n}\nRouter.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: Router, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nRouter.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: Router, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: Router, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return []; } });\nfunction validateCommands(commands) {\n    for (let i = 0; i < commands.length; i++) {\n        const cmd = commands[i];\n        if (cmd == null) {\n            throw new ɵRuntimeError(4008 /* RuntimeErrorCode.NULLISH_COMMAND */, NG_DEV_MODE$2 && `The requested path contains ${cmd} segment at index ${i}`);\n        }\n    }\n}\n\n/**\n * @description\n *\n * When applied to an element in a template, makes that element a link\n * that initiates navigation to a route. Navigation opens one or more routed components\n * in one or more `<router-outlet>` locations on the page.\n *\n * Given a route configuration `[{ path: 'user/:name', component: UserCmp }]`,\n * the following creates a static link to the route:\n * `<a routerLink=\"/user/bob\">link to user component</a>`\n *\n * You can use dynamic values to generate the link.\n * For a dynamic link, pass an array of path segments,\n * followed by the params for each segment.\n * For example, `['/team', teamId, 'user', userName, {details: true}]`\n * generates a link to `/team/11/user/bob;details=true`.\n *\n * Multiple static segments can be merged into one term and combined with dynamic segments.\n * For example, `['/team/11/user', userName, {details: true}]`\n *\n * The input that you provide to the link is treated as a delta to the current URL.\n * For instance, suppose the current URL is `/user/(box//aux:team)`.\n * The link `<a [routerLink]=\"['/user/jim']\">Jim</a>` creates the URL\n * `/user/(jim//aux:team)`.\n * See {@link Router#createUrlTree createUrlTree} for more information.\n *\n * @usageNotes\n *\n * You can use absolute or relative paths in a link, set query parameters,\n * control how parameters are handled, and keep a history of navigation states.\n *\n * ### Relative link paths\n *\n * The first segment name can be prepended with `/`, `./`, or `../`.\n * * If the first segment begins with `/`, the router looks up the route from the root of the\n *   app.\n * * If the first segment begins with `./`, or doesn't begin with a slash, the router\n *   looks in the children of the current activated route.\n * * If the first segment begins with `../`, the router goes up one level in the route tree.\n *\n * ### Setting and handling query params and fragments\n *\n * The following link adds a query parameter and a fragment to the generated URL:\n *\n * ```\n * <a [routerLink]=\"['/user/bob']\" [queryParams]=\"{debug: true}\" fragment=\"education\">\n *   link to user component\n * </a>\n * ```\n * By default, the directive constructs the new URL using the given query parameters.\n * The example generates the link: `/user/bob?debug=true#education`.\n *\n * You can instruct the directive to handle query parameters differently\n * by specifying the `queryParamsHandling` option in the link.\n * Allowed values are:\n *\n *  - `'merge'`: Merge the given `queryParams` into the current query params.\n *  - `'preserve'`: Preserve the current query params.\n *\n * For example:\n *\n * ```\n * <a [routerLink]=\"['/user/bob']\" [queryParams]=\"{debug: true}\" queryParamsHandling=\"merge\">\n *   link to user component\n * </a>\n * ```\n *\n * See {@link UrlCreationOptions.queryParamsHandling UrlCreationOptions#queryParamsHandling}.\n *\n * ### Preserving navigation history\n *\n * You can provide a `state` value to be persisted to the browser's\n * [`History.state` property](https://developer.mozilla.org/en-US/docs/Web/API/History#Properties).\n * For example:\n *\n * ```\n * <a [routerLink]=\"['/user/bob']\" [state]=\"{tracingId: 123}\">\n *   link to user component\n * </a>\n * ```\n *\n * Use {@link Router.getCurrentNavigation() Router#getCurrentNavigation} to retrieve a saved\n * navigation-state value. For example, to capture the `tracingId` during the `NavigationStart`\n * event:\n *\n * ```\n * // Get NavigationStart events\n * router.events.pipe(filter(e => e instanceof NavigationStart)).subscribe(e => {\n *   const navigation = router.getCurrentNavigation();\n *   tracingService.trace({id: navigation.extras.state.tracingId});\n * });\n * ```\n *\n * @ngModule RouterModule\n *\n * @publicApi\n */\nclass RouterLink {\n    constructor(router, route, tabIndexAttribute, renderer, el, locationStrategy) {\n        this.router = router;\n        this.route = route;\n        this.tabIndexAttribute = tabIndexAttribute;\n        this.renderer = renderer;\n        this.el = el;\n        this.locationStrategy = locationStrategy;\n        this._preserveFragment = false;\n        this._skipLocationChange = false;\n        this._replaceUrl = false;\n        /**\n         * Represents an `href` attribute value applied to a host element,\n         * when a host element is `<a>`. For other tags, the value is `null`.\n         */\n        this.href = null;\n        this.commands = null;\n        /** @internal */\n        this.onChanges = new Subject();\n        const tagName = el.nativeElement.tagName?.toLowerCase();\n        this.isAnchorElement = tagName === 'a' || tagName === 'area';\n        if (this.isAnchorElement) {\n            this.subscription = router.events.subscribe((s) => {\n                if (s instanceof NavigationEnd) {\n                    this.updateHref();\n                }\n            });\n        }\n        else {\n            this.setTabIndexIfNotOnNativeEl('0');\n        }\n    }\n    /**\n     * Passed to {@link Router#createUrlTree Router#createUrlTree} as part of the\n     * `UrlCreationOptions`.\n     * @see {@link UrlCreationOptions#preserveFragment UrlCreationOptions#preserveFragment}\n     * @see {@link Router#createUrlTree Router#createUrlTree}\n     */\n    set preserveFragment(preserveFragment) {\n        this._preserveFragment = ɵcoerceToBoolean(preserveFragment);\n    }\n    get preserveFragment() {\n        return this._preserveFragment;\n    }\n    /**\n     * Passed to {@link Router#navigateByUrl Router#navigateByUrl} as part of the\n     * `NavigationBehaviorOptions`.\n     * @see {@link NavigationBehaviorOptions#skipLocationChange NavigationBehaviorOptions#skipLocationChange}\n     * @see {@link Router#navigateByUrl Router#navigateByUrl}\n     */\n    set skipLocationChange(skipLocationChange) {\n        this._skipLocationChange = ɵcoerceToBoolean(skipLocationChange);\n    }\n    get skipLocationChange() {\n        return this._skipLocationChange;\n    }\n    /**\n     * Passed to {@link Router#navigateByUrl Router#navigateByUrl} as part of the\n     * `NavigationBehaviorOptions`.\n     * @see {@link NavigationBehaviorOptions#replaceUrl NavigationBehaviorOptions#replaceUrl}\n     * @see {@link Router#navigateByUrl Router#navigateByUrl}\n     */\n    set replaceUrl(replaceUrl) {\n        this._replaceUrl = ɵcoerceToBoolean(replaceUrl);\n    }\n    get replaceUrl() {\n        return this._replaceUrl;\n    }\n    /**\n     * Modifies the tab index if there was not a tabindex attribute on the element during\n     * instantiation.\n     */\n    setTabIndexIfNotOnNativeEl(newTabIndex) {\n        if (this.tabIndexAttribute != null /* both `null` and `undefined` */ || this.isAnchorElement) {\n            return;\n        }\n        this.applyAttributeValue('tabindex', newTabIndex);\n    }\n    /** @nodoc */\n    ngOnChanges(changes) {\n        if (this.isAnchorElement) {\n            this.updateHref();\n        }\n        // This is subscribed to by `RouterLinkActive` so that it knows to update when there are changes\n        // to the RouterLinks it's tracking.\n        this.onChanges.next(this);\n    }\n    /**\n     * Commands to pass to {@link Router#createUrlTree Router#createUrlTree}.\n     *   - **array**: commands to pass to {@link Router#createUrlTree Router#createUrlTree}.\n     *   - **string**: shorthand for array of commands with just the string, i.e. `['/route']`\n     *   - **null|undefined**: effectively disables the `routerLink`\n     * @see {@link Router#createUrlTree Router#createUrlTree}\n     */\n    set routerLink(commands) {\n        if (commands != null) {\n            this.commands = Array.isArray(commands) ? commands : [commands];\n            this.setTabIndexIfNotOnNativeEl('0');\n        }\n        else {\n            this.commands = null;\n            this.setTabIndexIfNotOnNativeEl(null);\n        }\n    }\n    /** @nodoc */\n    onClick(button, ctrlKey, shiftKey, altKey, metaKey) {\n        if (this.urlTree === null) {\n            return true;\n        }\n        if (this.isAnchorElement) {\n            if (button !== 0 || ctrlKey || shiftKey || altKey || metaKey) {\n                return true;\n            }\n            if (typeof this.target === 'string' && this.target != '_self') {\n                return true;\n            }\n        }\n        const extras = {\n            skipLocationChange: this.skipLocationChange,\n            replaceUrl: this.replaceUrl,\n            state: this.state,\n        };\n        this.router.navigateByUrl(this.urlTree, extras);\n        // Return `false` for `<a>` elements to prevent default action\n        // and cancel the native behavior, since the navigation is handled\n        // by the Router.\n        return !this.isAnchorElement;\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        this.subscription?.unsubscribe();\n    }\n    updateHref() {\n        this.href = this.urlTree !== null && this.locationStrategy ?\n            this.locationStrategy?.prepareExternalUrl(this.router.serializeUrl(this.urlTree)) :\n            null;\n        const sanitizedValue = this.href === null ?\n            null :\n            // This class represents a directive that can be added to both `<a>` elements,\n            // as well as other elements. As a result, we can't define security context at\n            // compile time. So the security context is deferred to runtime.\n            // The `ɵɵsanitizeUrlOrResourceUrl` selects the necessary sanitizer function\n            // based on the tag and property names. The logic mimics the one from\n            // `packages/compiler/src/schema/dom_security_schema.ts`, which is used at compile time.\n            //\n            // Note: we should investigate whether we can switch to using `@HostBinding('attr.href')`\n            // instead of applying a value via a renderer, after a final merge of the\n            // `RouterLinkWithHref` directive.\n            ɵɵsanitizeUrlOrResourceUrl(this.href, this.el.nativeElement.tagName.toLowerCase(), 'href');\n        this.applyAttributeValue('href', sanitizedValue);\n    }\n    applyAttributeValue(attrName, attrValue) {\n        const renderer = this.renderer;\n        const nativeElement = this.el.nativeElement;\n        if (attrValue !== null) {\n            renderer.setAttribute(nativeElement, attrName, attrValue);\n        }\n        else {\n            renderer.removeAttribute(nativeElement, attrName);\n        }\n    }\n    get urlTree() {\n        if (this.commands === null) {\n            return null;\n        }\n        return this.router.createUrlTree(this.commands, {\n            // If the `relativeTo` input is not defined, we want to use `this.route` by default.\n            // Otherwise, we should use the value provided by the user in the input.\n            relativeTo: this.relativeTo !== undefined ? this.relativeTo : this.route,\n            queryParams: this.queryParams,\n            fragment: this.fragment,\n            queryParamsHandling: this.queryParamsHandling,\n            preserveFragment: this.preserveFragment,\n        });\n    }\n}\nRouterLink.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterLink, deps: [{ token: Router }, { token: ActivatedRoute }, { token: 'tabindex', attribute: true }, { token: i0.Renderer2 }, { token: i0.ElementRef }, { token: i3.LocationStrategy }], target: i0.ɵɵFactoryTarget.Directive });\nRouterLink.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.9\", type: RouterLink, isStandalone: true, selector: \"[routerLink]\", inputs: { target: \"target\", queryParams: \"queryParams\", fragment: \"fragment\", queryParamsHandling: \"queryParamsHandling\", state: \"state\", relativeTo: \"relativeTo\", preserveFragment: \"preserveFragment\", skipLocationChange: \"skipLocationChange\", replaceUrl: \"replaceUrl\", routerLink: \"routerLink\" }, host: { listeners: { \"click\": \"onClick($event.button,$event.ctrlKey,$event.shiftKey,$event.altKey,$event.metaKey)\" }, properties: { \"attr.target\": \"this.target\" } }, usesOnChanges: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterLink, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[routerLink]',\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: Router }, { type: ActivatedRoute }, { type: undefined, decorators: [{\n                    type: Attribute,\n                    args: ['tabindex']\n                }] }, { type: i0.Renderer2 }, { type: i0.ElementRef }, { type: i3.LocationStrategy }]; }, propDecorators: { target: [{\n                type: HostBinding,\n                args: ['attr.target']\n            }, {\n                type: Input\n            }], queryParams: [{\n                type: Input\n            }], fragment: [{\n                type: Input\n            }], queryParamsHandling: [{\n                type: Input\n            }], state: [{\n                type: Input\n            }], relativeTo: [{\n                type: Input\n            }], preserveFragment: [{\n                type: Input\n            }], skipLocationChange: [{\n                type: Input\n            }], replaceUrl: [{\n                type: Input\n            }], routerLink: [{\n                type: Input\n            }], onClick: [{\n                type: HostListener,\n                args: ['click',\n                    ['$event.button', '$event.ctrlKey', '$event.shiftKey', '$event.altKey', '$event.metaKey']]\n            }] } });\n\n/**\n *\n * @description\n *\n * Tracks whether the linked route of an element is currently active, and allows you\n * to specify one or more CSS classes to add to the element when the linked route\n * is active.\n *\n * Use this directive to create a visual distinction for elements associated with an active route.\n * For example, the following code highlights the word \"Bob\" when the router\n * activates the associated route:\n *\n * ```\n * <a routerLink=\"/user/bob\" routerLinkActive=\"active-link\">Bob</a>\n * ```\n *\n * Whenever the URL is either '/user' or '/user/bob', the \"active-link\" class is\n * added to the anchor tag. If the URL changes, the class is removed.\n *\n * You can set more than one class using a space-separated string or an array.\n * For example:\n *\n * ```\n * <a routerLink=\"/user/bob\" routerLinkActive=\"class1 class2\">Bob</a>\n * <a routerLink=\"/user/bob\" [routerLinkActive]=\"['class1', 'class2']\">Bob</a>\n * ```\n *\n * To add the classes only when the URL matches the link exactly, add the option `exact: true`:\n *\n * ```\n * <a routerLink=\"/user/bob\" routerLinkActive=\"active-link\" [routerLinkActiveOptions]=\"{exact:\n * true}\">Bob</a>\n * ```\n *\n * To directly check the `isActive` status of the link, assign the `RouterLinkActive`\n * instance to a template variable.\n * For example, the following checks the status without assigning any CSS classes:\n *\n * ```\n * <a routerLink=\"/user/bob\" routerLinkActive #rla=\"routerLinkActive\">\n *   Bob {{ rla.isActive ? '(already open)' : ''}}\n * </a>\n * ```\n *\n * You can apply the `RouterLinkActive` directive to an ancestor of linked elements.\n * For example, the following sets the active-link class on the `<div>`  parent tag\n * when the URL is either '/user/jim' or '/user/bob'.\n *\n * ```\n * <div routerLinkActive=\"active-link\" [routerLinkActiveOptions]=\"{exact: true}\">\n *   <a routerLink=\"/user/jim\">Jim</a>\n *   <a routerLink=\"/user/bob\">Bob</a>\n * </div>\n * ```\n *\n * The `RouterLinkActive` directive can also be used to set the aria-current attribute\n * to provide an alternative distinction for active elements to visually impaired users.\n *\n * For example, the following code adds the 'active' class to the Home Page link when it is\n * indeed active and in such case also sets its aria-current attribute to 'page':\n *\n * ```\n * <a routerLink=\"/\" routerLinkActive=\"active\" ariaCurrentWhenActive=\"page\">Home Page</a>\n * ```\n *\n * @ngModule RouterModule\n *\n * @publicApi\n */\nclass RouterLinkActive {\n    get isActive() {\n        return this._isActive;\n    }\n    constructor(router, element, renderer, cdr, link) {\n        this.router = router;\n        this.element = element;\n        this.renderer = renderer;\n        this.cdr = cdr;\n        this.link = link;\n        this.classes = [];\n        this._isActive = false;\n        /**\n         * Options to configure how to determine if the router link is active.\n         *\n         * These options are passed to the `Router.isActive()` function.\n         *\n         * @see Router.isActive\n         */\n        this.routerLinkActiveOptions = { exact: false };\n        /**\n         *\n         * You can use the output `isActiveChange` to get notified each time the link becomes\n         * active or inactive.\n         *\n         * Emits:\n         * true  -> Route is active\n         * false -> Route is inactive\n         *\n         * ```\n         * <a\n         *  routerLink=\"/user/bob\"\n         *  routerLinkActive=\"active-link\"\n         *  (isActiveChange)=\"this.onRouterLinkActive($event)\">Bob</a>\n         * ```\n         */\n        this.isActiveChange = new EventEmitter();\n        this.routerEventsSubscription = router.events.subscribe((s) => {\n            if (s instanceof NavigationEnd) {\n                this.update();\n            }\n        });\n    }\n    /** @nodoc */\n    ngAfterContentInit() {\n        // `of(null)` is used to force subscribe body to execute once immediately (like `startWith`).\n        of(this.links.changes, of(null)).pipe(mergeAll()).subscribe(_ => {\n            this.update();\n            this.subscribeToEachLinkOnChanges();\n        });\n    }\n    subscribeToEachLinkOnChanges() {\n        this.linkInputChangesSubscription?.unsubscribe();\n        const allLinkChanges = [...this.links.toArray(), this.link]\n            .filter((link) => !!link)\n            .map(link => link.onChanges);\n        this.linkInputChangesSubscription = from(allLinkChanges).pipe(mergeAll()).subscribe(link => {\n            if (this._isActive !== this.isLinkActive(this.router)(link)) {\n                this.update();\n            }\n        });\n    }\n    set routerLinkActive(data) {\n        const classes = Array.isArray(data) ? data : data.split(' ');\n        this.classes = classes.filter(c => !!c);\n    }\n    /** @nodoc */\n    ngOnChanges(changes) {\n        this.update();\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        this.routerEventsSubscription.unsubscribe();\n        this.linkInputChangesSubscription?.unsubscribe();\n    }\n    update() {\n        if (!this.links || !this.router.navigated)\n            return;\n        Promise.resolve().then(() => {\n            const hasActiveLinks = this.hasActiveLinks();\n            if (this._isActive !== hasActiveLinks) {\n                this._isActive = hasActiveLinks;\n                this.cdr.markForCheck();\n                this.classes.forEach((c) => {\n                    if (hasActiveLinks) {\n                        this.renderer.addClass(this.element.nativeElement, c);\n                    }\n                    else {\n                        this.renderer.removeClass(this.element.nativeElement, c);\n                    }\n                });\n                if (hasActiveLinks && this.ariaCurrentWhenActive !== undefined) {\n                    this.renderer.setAttribute(this.element.nativeElement, 'aria-current', this.ariaCurrentWhenActive.toString());\n                }\n                else {\n                    this.renderer.removeAttribute(this.element.nativeElement, 'aria-current');\n                }\n                // Emit on isActiveChange after classes are updated\n                this.isActiveChange.emit(hasActiveLinks);\n            }\n        });\n    }\n    isLinkActive(router) {\n        const options = isActiveMatchOptions(this.routerLinkActiveOptions) ?\n            this.routerLinkActiveOptions :\n            // While the types should disallow `undefined` here, it's possible without strict inputs\n            (this.routerLinkActiveOptions.exact || false);\n        return (link) => link.urlTree ? router.isActive(link.urlTree, options) : false;\n    }\n    hasActiveLinks() {\n        const isActiveCheckFn = this.isLinkActive(this.router);\n        return this.link && isActiveCheckFn(this.link) || this.links.some(isActiveCheckFn);\n    }\n}\nRouterLinkActive.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterLinkActive, deps: [{ token: Router }, { token: i0.ElementRef }, { token: i0.Renderer2 }, { token: i0.ChangeDetectorRef }, { token: RouterLink, optional: true }], target: i0.ɵɵFactoryTarget.Directive });\nRouterLinkActive.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: \"14.0.0\", version: \"15.2.9\", type: RouterLinkActive, isStandalone: true, selector: \"[routerLinkActive]\", inputs: { routerLinkActiveOptions: \"routerLinkActiveOptions\", ariaCurrentWhenActive: \"ariaCurrentWhenActive\", routerLinkActive: \"routerLinkActive\" }, outputs: { isActiveChange: \"isActiveChange\" }, queries: [{ propertyName: \"links\", predicate: RouterLink, descendants: true }], exportAs: [\"routerLinkActive\"], usesOnChanges: true, ngImport: i0 });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterLinkActive, decorators: [{\n            type: Directive,\n            args: [{\n                    selector: '[routerLinkActive]',\n                    exportAs: 'routerLinkActive',\n                    standalone: true,\n                }]\n        }], ctorParameters: function () { return [{ type: Router }, { type: i0.ElementRef }, { type: i0.Renderer2 }, { type: i0.ChangeDetectorRef }, { type: RouterLink, decorators: [{\n                    type: Optional\n                }] }]; }, propDecorators: { links: [{\n                type: ContentChildren,\n                args: [RouterLink, { descendants: true }]\n            }], routerLinkActiveOptions: [{\n                type: Input\n            }], ariaCurrentWhenActive: [{\n                type: Input\n            }], isActiveChange: [{\n                type: Output\n            }], routerLinkActive: [{\n                type: Input\n            }] } });\n/**\n * Use instead of `'paths' in options` to be compatible with property renaming\n */\nfunction isActiveMatchOptions(options) {\n    return !!options.paths;\n}\n\n/**\n * @description\n *\n * Provides a preloading strategy.\n *\n * @publicApi\n */\nclass PreloadingStrategy {\n}\n/**\n * @description\n *\n * Provides a preloading strategy that preloads all modules as quickly as possible.\n *\n * ```\n * RouterModule.forRoot(ROUTES, {preloadingStrategy: PreloadAllModules})\n * ```\n *\n * @publicApi\n */\nclass PreloadAllModules {\n    preload(route, fn) {\n        return fn().pipe(catchError(() => of(null)));\n    }\n}\nPreloadAllModules.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: PreloadAllModules, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nPreloadAllModules.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: PreloadAllModules, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: PreloadAllModules, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }] });\n/**\n * @description\n *\n * Provides a preloading strategy that does not preload any modules.\n *\n * This strategy is enabled by default.\n *\n * @publicApi\n */\nclass NoPreloading {\n    preload(route, fn) {\n        return of(null);\n    }\n}\nNoPreloading.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: NoPreloading, deps: [], target: i0.ɵɵFactoryTarget.Injectable });\nNoPreloading.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: NoPreloading, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: NoPreloading, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }] });\n/**\n * The preloader optimistically loads all router configurations to\n * make navigations into lazily-loaded sections of the application faster.\n *\n * The preloader runs in the background. When the router bootstraps, the preloader\n * starts listening to all navigation events. After every such event, the preloader\n * will check if any configurations can be loaded lazily.\n *\n * If a route is protected by `canLoad` guards, the preloaded will not load it.\n *\n * @publicApi\n */\nclass RouterPreloader {\n    constructor(router, compiler, injector, preloadingStrategy, loader) {\n        this.router = router;\n        this.injector = injector;\n        this.preloadingStrategy = preloadingStrategy;\n        this.loader = loader;\n    }\n    setUpPreloading() {\n        this.subscription =\n            this.router.events\n                .pipe(filter((e) => e instanceof NavigationEnd), concatMap(() => this.preload()))\n                .subscribe(() => { });\n    }\n    preload() {\n        return this.processRoutes(this.injector, this.router.config);\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        if (this.subscription) {\n            this.subscription.unsubscribe();\n        }\n    }\n    processRoutes(injector, routes) {\n        const res = [];\n        for (const route of routes) {\n            if (route.providers && !route._injector) {\n                route._injector =\n                    createEnvironmentInjector(route.providers, injector, `Route: ${route.path}`);\n            }\n            const injectorForCurrentRoute = route._injector ?? injector;\n            const injectorForChildren = route._loadedInjector ?? injectorForCurrentRoute;\n            // Note that `canLoad` is only checked as a condition that prevents `loadChildren` and not\n            // `loadComponent`. `canLoad` guards only block loading of child routes by design. This\n            // happens as a consequence of needing to descend into children for route matching immediately\n            // while component loading is deferred until route activation. Because `canLoad` guards can\n            // have side effects, we cannot execute them here so we instead skip preloading altogether\n            // when present. Lastly, it remains to be decided whether `canLoad` should behave this way\n            // at all. Code splitting and lazy loading is separate from client-side authorization checks\n            // and should not be used as a security measure to prevent loading of code.\n            if ((route.loadChildren && !route._loadedRoutes && route.canLoad === undefined) ||\n                (route.loadComponent && !route._loadedComponent)) {\n                res.push(this.preloadConfig(injectorForCurrentRoute, route));\n            }\n            if (route.children || route._loadedRoutes) {\n                res.push(this.processRoutes(injectorForChildren, (route.children ?? route._loadedRoutes)));\n            }\n        }\n        return from(res).pipe(mergeAll());\n    }\n    preloadConfig(injector, route) {\n        return this.preloadingStrategy.preload(route, () => {\n            let loadedChildren$;\n            if (route.loadChildren && route.canLoad === undefined) {\n                loadedChildren$ = this.loader.loadChildren(injector, route);\n            }\n            else {\n                loadedChildren$ = of(null);\n            }\n            const recursiveLoadChildren$ = loadedChildren$.pipe(mergeMap((config) => {\n                if (config === null) {\n                    return of(void 0);\n                }\n                route._loadedRoutes = config.routes;\n                route._loadedInjector = config.injector;\n                // If the loaded config was a module, use that as the module/module injector going\n                // forward. Otherwise, continue using the current module/module injector.\n                return this.processRoutes(config.injector ?? injector, config.routes);\n            }));\n            if (route.loadComponent && !route._loadedComponent) {\n                const loadComponent$ = this.loader.loadComponent(route);\n                return from([recursiveLoadChildren$, loadComponent$]).pipe(mergeAll());\n            }\n            else {\n                return recursiveLoadChildren$;\n            }\n        });\n    }\n}\nRouterPreloader.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterPreloader, deps: [{ token: Router }, { token: i0.Compiler }, { token: i0.EnvironmentInjector }, { token: PreloadingStrategy }, { token: RouterConfigLoader }], target: i0.ɵɵFactoryTarget.Injectable });\nRouterPreloader.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterPreloader, providedIn: 'root' });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterPreloader, decorators: [{\n            type: Injectable,\n            args: [{ providedIn: 'root' }]\n        }], ctorParameters: function () { return [{ type: Router }, { type: i0.Compiler }, { type: i0.EnvironmentInjector }, { type: PreloadingStrategy }, { type: RouterConfigLoader }]; } });\n\nconst ROUTER_SCROLLER = new InjectionToken('');\nclass RouterScroller {\n    /** @nodoc */\n    constructor(urlSerializer, transitions, viewportScroller, zone, options = {}) {\n        this.urlSerializer = urlSerializer;\n        this.transitions = transitions;\n        this.viewportScroller = viewportScroller;\n        this.zone = zone;\n        this.options = options;\n        this.lastId = 0;\n        this.lastSource = 'imperative';\n        this.restoredId = 0;\n        this.store = {};\n        // Default both options to 'disabled'\n        options.scrollPositionRestoration = options.scrollPositionRestoration || 'disabled';\n        options.anchorScrolling = options.anchorScrolling || 'disabled';\n    }\n    init() {\n        // we want to disable the automatic scrolling because having two places\n        // responsible for scrolling results race conditions, especially given\n        // that browser don't implement this behavior consistently\n        if (this.options.scrollPositionRestoration !== 'disabled') {\n            this.viewportScroller.setHistoryScrollRestoration('manual');\n        }\n        this.routerEventsSubscription = this.createScrollEvents();\n        this.scrollEventsSubscription = this.consumeScrollEvents();\n    }\n    createScrollEvents() {\n        return this.transitions.events.subscribe(e => {\n            if (e instanceof NavigationStart) {\n                // store the scroll position of the current stable navigations.\n                this.store[this.lastId] = this.viewportScroller.getScrollPosition();\n                this.lastSource = e.navigationTrigger;\n                this.restoredId = e.restoredState ? e.restoredState.navigationId : 0;\n            }\n            else if (e instanceof NavigationEnd) {\n                this.lastId = e.id;\n                this.scheduleScrollEvent(e, this.urlSerializer.parse(e.urlAfterRedirects).fragment);\n            }\n        });\n    }\n    consumeScrollEvents() {\n        return this.transitions.events.subscribe(e => {\n            if (!(e instanceof Scroll))\n                return;\n            // a popstate event. The pop state event will always ignore anchor scrolling.\n            if (e.position) {\n                if (this.options.scrollPositionRestoration === 'top') {\n                    this.viewportScroller.scrollToPosition([0, 0]);\n                }\n                else if (this.options.scrollPositionRestoration === 'enabled') {\n                    this.viewportScroller.scrollToPosition(e.position);\n                }\n                // imperative navigation \"forward\"\n            }\n            else {\n                if (e.anchor && this.options.anchorScrolling === 'enabled') {\n                    this.viewportScroller.scrollToAnchor(e.anchor);\n                }\n                else if (this.options.scrollPositionRestoration !== 'disabled') {\n                    this.viewportScroller.scrollToPosition([0, 0]);\n                }\n            }\n        });\n    }\n    scheduleScrollEvent(routerEvent, anchor) {\n        this.zone.runOutsideAngular(() => {\n            // The scroll event needs to be delayed until after change detection. Otherwise, we may\n            // attempt to restore the scroll position before the router outlet has fully rendered the\n            // component by executing its update block of the template function.\n            setTimeout(() => {\n                this.zone.run(() => {\n                    this.transitions.events.next(new Scroll(routerEvent, this.lastSource === 'popstate' ? this.store[this.restoredId] : null, anchor));\n                });\n            }, 0);\n        });\n    }\n    /** @nodoc */\n    ngOnDestroy() {\n        this.routerEventsSubscription?.unsubscribe();\n        this.scrollEventsSubscription?.unsubscribe();\n    }\n}\nRouterScroller.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterScroller, deps: \"invalid\", target: i0.ɵɵFactoryTarget.Injectable });\nRouterScroller.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterScroller });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterScroller, decorators: [{\n            type: Injectable\n        }], ctorParameters: function () { return [{ type: UrlSerializer }, { type: NavigationTransitions }, { type: i3.ViewportScroller }, { type: i0.NgZone }, { type: undefined }]; } });\n\nvar NavigationResult;\n(function (NavigationResult) {\n    NavigationResult[NavigationResult[\"COMPLETE\"] = 0] = \"COMPLETE\";\n    NavigationResult[NavigationResult[\"FAILED\"] = 1] = \"FAILED\";\n    NavigationResult[NavigationResult[\"REDIRECTING\"] = 2] = \"REDIRECTING\";\n})(NavigationResult || (NavigationResult = {}));\n/**\n * Performs the given action once the router finishes its next/current navigation.\n *\n * The navigation is considered complete under the following conditions:\n * - `NavigationCancel` event emits and the code is not `NavigationCancellationCode.Redirect` or\n * `NavigationCancellationCode.SupersededByNewNavigation`. In these cases, the\n * redirecting/superseding navigation must finish.\n * - `NavigationError`, `NavigationEnd`, or `NavigationSkipped` event emits\n */\nfunction afterNextNavigation(router, action) {\n    router.events\n        .pipe(filter((e) => e instanceof NavigationEnd || e instanceof NavigationCancel ||\n        e instanceof NavigationError || e instanceof NavigationSkipped), map(e => {\n        if (e instanceof NavigationEnd || e instanceof NavigationSkipped) {\n            return NavigationResult.COMPLETE;\n        }\n        const redirecting = e instanceof NavigationCancel ?\n            (e.code === 0 /* NavigationCancellationCode.Redirect */ ||\n                e.code === 1 /* NavigationCancellationCode.SupersededByNewNavigation */) :\n            false;\n        return redirecting ? NavigationResult.REDIRECTING : NavigationResult.FAILED;\n    }), filter((result) => result !== NavigationResult.REDIRECTING), take(1))\n        .subscribe(() => {\n        action();\n    });\n}\n\nconst NG_DEV_MODE$1 = typeof ngDevMode === 'undefined' || ngDevMode;\n/**\n * Sets up providers necessary to enable `Router` functionality for the application.\n * Allows to configure a set of routes as well as extra features that should be enabled.\n *\n * @usageNotes\n *\n * Basic example of how you can add a Router to your application:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent, {\n *   providers: [provideRouter(appRoutes)]\n * });\n * ```\n *\n * You can also enable optional features in the Router by adding functions from the `RouterFeatures`\n * type:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes,\n *         withDebugTracing(),\n *         withRouterConfig({paramsInheritanceStrategy: 'always'}))\n *     ]\n *   }\n * );\n * ```\n *\n * @see `RouterFeatures`\n *\n * @publicApi\n * @param routes A set of `Route`s to use for the application routing table.\n * @param features Optional features to configure additional router behaviors.\n * @returns A set of providers to setup a Router.\n */\nfunction provideRouter(routes, ...features) {\n    return makeEnvironmentProviders([\n        { provide: ROUTES, multi: true, useValue: routes },\n        NG_DEV_MODE$1 ? { provide: ROUTER_IS_PROVIDED, useValue: true } : [],\n        { provide: ActivatedRoute, useFactory: rootRoute, deps: [Router] },\n        { provide: APP_BOOTSTRAP_LISTENER, multi: true, useFactory: getBootstrapListener },\n        features.map(feature => feature.ɵproviders),\n    ]);\n}\nfunction rootRoute(router) {\n    return router.routerState.root;\n}\n/**\n * Helper function to create an object that represents a Router feature.\n */\nfunction routerFeature(kind, providers) {\n    return { ɵkind: kind, ɵproviders: providers };\n}\n/**\n * An Injection token used to indicate whether `provideRouter` or `RouterModule.forRoot` was ever\n * called.\n */\nconst ROUTER_IS_PROVIDED = new InjectionToken('', { providedIn: 'root', factory: () => false });\nconst routerIsProvidedDevModeCheck = {\n    provide: ENVIRONMENT_INITIALIZER,\n    multi: true,\n    useFactory() {\n        return () => {\n            if (!inject(ROUTER_IS_PROVIDED)) {\n                console.warn('`provideRoutes` was called without `provideRouter` or `RouterModule.forRoot`. ' +\n                    'This is likely a mistake.');\n            }\n        };\n    }\n};\n/**\n * Registers a [DI provider](guide/glossary#provider) for a set of routes.\n * @param routes The route configuration to provide.\n *\n * @usageNotes\n *\n * ```\n * @NgModule({\n *   providers: [provideRoutes(ROUTES)]\n * })\n * class LazyLoadedChildModule {}\n * ```\n *\n * @deprecated If necessary, provide routes using the `ROUTES` `InjectionToken`.\n * @see `ROUTES`\n * @publicApi\n */\nfunction provideRoutes(routes) {\n    return [\n        { provide: ROUTES, multi: true, useValue: routes },\n        NG_DEV_MODE$1 ? routerIsProvidedDevModeCheck : [],\n    ];\n}\n/**\n * Enables customizable scrolling behavior for router navigations.\n *\n * @usageNotes\n *\n * Basic example of how you can enable scrolling feature:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withInMemoryScrolling())\n *     ]\n *   }\n * );\n * ```\n *\n * @see `provideRouter`\n * @see `ViewportScroller`\n *\n * @publicApi\n * @param options Set of configuration parameters to customize scrolling behavior, see\n *     `InMemoryScrollingOptions` for additional information.\n * @returns A set of providers for use with `provideRouter`.\n */\nfunction withInMemoryScrolling(options = {}) {\n    const providers = [{\n            provide: ROUTER_SCROLLER,\n            useFactory: () => {\n                const viewportScroller = inject(ViewportScroller);\n                const zone = inject(NgZone);\n                const transitions = inject(NavigationTransitions);\n                const urlSerializer = inject(UrlSerializer);\n                return new RouterScroller(urlSerializer, transitions, viewportScroller, zone, options);\n            },\n        }];\n    return routerFeature(4 /* RouterFeatureKind.InMemoryScrollingFeature */, providers);\n}\nfunction getBootstrapListener() {\n    const injector = inject(Injector);\n    return (bootstrappedComponentRef) => {\n        const ref = injector.get(ApplicationRef);\n        if (bootstrappedComponentRef !== ref.components[0]) {\n            return;\n        }\n        const router = injector.get(Router);\n        const bootstrapDone = injector.get(BOOTSTRAP_DONE);\n        if (injector.get(INITIAL_NAVIGATION) === 1 /* InitialNavigation.EnabledNonBlocking */) {\n            router.initialNavigation();\n        }\n        injector.get(ROUTER_PRELOADER, null, InjectFlags.Optional)?.setUpPreloading();\n        injector.get(ROUTER_SCROLLER, null, InjectFlags.Optional)?.init();\n        router.resetRootComponentType(ref.componentTypes[0]);\n        if (!bootstrapDone.closed) {\n            bootstrapDone.next();\n            bootstrapDone.complete();\n            bootstrapDone.unsubscribe();\n        }\n    };\n}\n/**\n * A subject used to indicate that the bootstrapping phase is done. When initial navigation is\n * `enabledBlocking`, the first navigation waits until bootstrapping is finished before continuing\n * to the activation phase.\n */\nconst BOOTSTRAP_DONE = new InjectionToken(NG_DEV_MODE$1 ? 'bootstrap done indicator' : '', {\n    factory: () => {\n        return new Subject();\n    }\n});\nconst INITIAL_NAVIGATION = new InjectionToken(NG_DEV_MODE$1 ? 'initial navigation' : '', { providedIn: 'root', factory: () => 1 /* InitialNavigation.EnabledNonBlocking */ });\n/**\n * Configures initial navigation to start before the root component is created.\n *\n * The bootstrap is blocked until the initial navigation is complete. This value is required for\n * [server-side rendering](guide/universal) to work.\n *\n * @usageNotes\n *\n * Basic example of how you can enable this navigation behavior:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withEnabledBlockingInitialNavigation())\n *     ]\n *   }\n * );\n * ```\n *\n * @see `provideRouter`\n *\n * @publicApi\n * @returns A set of providers for use with `provideRouter`.\n */\nfunction withEnabledBlockingInitialNavigation() {\n    const providers = [\n        { provide: INITIAL_NAVIGATION, useValue: 0 /* InitialNavigation.EnabledBlocking */ },\n        {\n            provide: APP_INITIALIZER,\n            multi: true,\n            deps: [Injector],\n            useFactory: (injector) => {\n                const locationInitialized = injector.get(LOCATION_INITIALIZED, Promise.resolve());\n                return () => {\n                    return locationInitialized.then(() => {\n                        return new Promise(resolve => {\n                            const router = injector.get(Router);\n                            const bootstrapDone = injector.get(BOOTSTRAP_DONE);\n                            afterNextNavigation(router, () => {\n                                // Unblock APP_INITIALIZER in case the initial navigation was canceled or errored\n                                // without a redirect.\n                                resolve(true);\n                            });\n                            injector.get(NavigationTransitions).afterPreactivation = () => {\n                                // Unblock APP_INITIALIZER once we get to `afterPreactivation`. At this point, we\n                                // assume activation will complete successfully (even though this is not\n                                // guaranteed).\n                                resolve(true);\n                                return bootstrapDone.closed ? of(void 0) : bootstrapDone;\n                            };\n                            router.initialNavigation();\n                        });\n                    });\n                };\n            }\n        },\n    ];\n    return routerFeature(2 /* RouterFeatureKind.EnabledBlockingInitialNavigationFeature */, providers);\n}\n/**\n * Disables initial navigation.\n *\n * Use if there is a reason to have more control over when the router starts its initial navigation\n * due to some complex initialization logic.\n *\n * @usageNotes\n *\n * Basic example of how you can disable initial navigation:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withDisabledInitialNavigation())\n *     ]\n *   }\n * );\n * ```\n *\n * @see `provideRouter`\n *\n * @returns A set of providers for use with `provideRouter`.\n *\n * @publicApi\n */\nfunction withDisabledInitialNavigation() {\n    const providers = [\n        {\n            provide: APP_INITIALIZER,\n            multi: true,\n            useFactory: () => {\n                const router = inject(Router);\n                return () => {\n                    router.setUpLocationChangeListener();\n                };\n            }\n        },\n        { provide: INITIAL_NAVIGATION, useValue: 2 /* InitialNavigation.Disabled */ }\n    ];\n    return routerFeature(3 /* RouterFeatureKind.DisabledInitialNavigationFeature */, providers);\n}\n/**\n * Enables logging of all internal navigation events to the console.\n * Extra logging might be useful for debugging purposes to inspect Router event sequence.\n *\n * @usageNotes\n *\n * Basic example of how you can enable debug tracing:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withDebugTracing())\n *     ]\n *   }\n * );\n * ```\n *\n * @see `provideRouter`\n *\n * @returns A set of providers for use with `provideRouter`.\n *\n * @publicApi\n */\nfunction withDebugTracing() {\n    let providers = [];\n    if (NG_DEV_MODE$1) {\n        providers = [{\n                provide: ENVIRONMENT_INITIALIZER,\n                multi: true,\n                useFactory: () => {\n                    const router = inject(Router);\n                    return () => router.events.subscribe((e) => {\n                        // tslint:disable:no-console\n                        console.group?.(`Router Event: ${e.constructor.name}`);\n                        console.log(stringifyEvent(e));\n                        console.log(e);\n                        console.groupEnd?.();\n                        // tslint:enable:no-console\n                    });\n                }\n            }];\n    }\n    else {\n        providers = [];\n    }\n    return routerFeature(1 /* RouterFeatureKind.DebugTracingFeature */, providers);\n}\nconst ROUTER_PRELOADER = new InjectionToken(NG_DEV_MODE$1 ? 'router preloader' : '');\n/**\n * Allows to configure a preloading strategy to use. The strategy is configured by providing a\n * reference to a class that implements a `PreloadingStrategy`.\n *\n * @usageNotes\n *\n * Basic example of how you can configure preloading:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withPreloading(PreloadAllModules))\n *     ]\n *   }\n * );\n * ```\n *\n * @see `provideRouter`\n *\n * @param preloadingStrategy A reference to a class that implements a `PreloadingStrategy` that\n *     should be used.\n * @returns A set of providers for use with `provideRouter`.\n *\n * @publicApi\n */\nfunction withPreloading(preloadingStrategy) {\n    const providers = [\n        { provide: ROUTER_PRELOADER, useExisting: RouterPreloader },\n        { provide: PreloadingStrategy, useExisting: preloadingStrategy },\n    ];\n    return routerFeature(0 /* RouterFeatureKind.PreloadingFeature */, providers);\n}\n/**\n * Allows to provide extra parameters to configure Router.\n *\n * @usageNotes\n *\n * Basic example of how you can provide extra configuration options:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withRouterConfig({\n *          onSameUrlNavigation: 'reload'\n *       }))\n *     ]\n *   }\n * );\n * ```\n *\n * @see `provideRouter`\n *\n * @param options A set of parameters to configure Router, see `RouterConfigOptions` for\n *     additional information.\n * @returns A set of providers for use with `provideRouter`.\n *\n * @publicApi\n */\nfunction withRouterConfig(options) {\n    const providers = [\n        { provide: ROUTER_CONFIGURATION, useValue: options },\n    ];\n    return routerFeature(5 /* RouterFeatureKind.RouterConfigurationFeature */, providers);\n}\n/**\n * Provides the location strategy that uses the URL fragment instead of the history API.\n *\n * @usageNotes\n *\n * Basic example of how you can use the hash location option:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withHashLocation())\n *     ]\n *   }\n * );\n * ```\n *\n * @see `provideRouter`\n * @see `HashLocationStrategy`\n *\n * @returns A set of providers for use with `provideRouter`.\n *\n * @publicApi\n */\nfunction withHashLocation() {\n    const providers = [\n        { provide: LocationStrategy, useClass: HashLocationStrategy },\n    ];\n    return routerFeature(5 /* RouterFeatureKind.RouterConfigurationFeature */, providers);\n}\n/**\n * Subscribes to the Router's navigation events and calls the given function when a\n * `NavigationError` happens.\n *\n * This function is run inside application's injection context so you can use the `inject` function.\n *\n * @usageNotes\n *\n * Basic example of how you can use the error handler option:\n * ```\n * const appRoutes: Routes = [];\n * bootstrapApplication(AppComponent,\n *   {\n *     providers: [\n *       provideRouter(appRoutes, withNavigationErrorHandler((e: NavigationError) =>\n * inject(MyErrorTracker).trackError(e)))\n *     ]\n *   }\n * );\n * ```\n *\n * @see `NavigationError`\n * @see `inject`\n * @see `EnvironmentInjector#runInContext`\n *\n * @returns A set of providers for use with `provideRouter`.\n *\n * @publicApi\n */\nfunction withNavigationErrorHandler(fn) {\n    const providers = [{\n            provide: ENVIRONMENT_INITIALIZER,\n            multi: true,\n            useValue: () => {\n                const injector = inject(EnvironmentInjector);\n                inject(Router).events.subscribe((e) => {\n                    if (e instanceof NavigationError) {\n                        injector.runInContext(() => fn(e));\n                    }\n                });\n            }\n        }];\n    return routerFeature(7 /* RouterFeatureKind.NavigationErrorHandlerFeature */, providers);\n}\n\nconst NG_DEV_MODE = typeof ngDevMode === 'undefined' || ngDevMode;\n/**\n * The directives defined in the `RouterModule`.\n */\nconst ROUTER_DIRECTIVES = [RouterOutlet, RouterLink, RouterLinkActive, ɵEmptyOutletComponent];\n/**\n * @docsNotRequired\n */\nconst ROUTER_FORROOT_GUARD = new InjectionToken(NG_DEV_MODE ? 'router duplicate forRoot guard' : 'ROUTER_FORROOT_GUARD');\n// TODO(atscott): All of these except `ActivatedRoute` are `providedIn: 'root'`. They are only kept\n// here to avoid a breaking change whereby the provider order matters based on where the\n// `RouterModule`/`RouterTestingModule` is imported. These can/should be removed as a \"breaking\"\n// change in a major version.\nconst ROUTER_PROVIDERS = [\n    Location,\n    { provide: UrlSerializer, useClass: DefaultUrlSerializer },\n    Router,\n    ChildrenOutletContexts,\n    { provide: ActivatedRoute, useFactory: rootRoute, deps: [Router] },\n    RouterConfigLoader,\n    // Only used to warn when `provideRoutes` is used without `RouterModule` or `provideRouter`. Can\n    // be removed when `provideRoutes` is removed.\n    NG_DEV_MODE ? { provide: ROUTER_IS_PROVIDED, useValue: true } : [],\n];\nfunction routerNgProbeToken() {\n    return new NgProbeToken('Router', Router);\n}\n/**\n * @description\n *\n * Adds directives and providers for in-app navigation among views defined in an application.\n * Use the Angular `Router` service to declaratively specify application states and manage state\n * transitions.\n *\n * You can import this NgModule multiple times, once for each lazy-loaded bundle.\n * However, only one `Router` service can be active.\n * To ensure this, there are two ways to register routes when importing this module:\n *\n * * The `forRoot()` method creates an `NgModule` that contains all the directives, the given\n * routes, and the `Router` service itself.\n * * The `forChild()` method creates an `NgModule` that contains all the directives and the given\n * routes, but does not include the `Router` service.\n *\n * @see [Routing and Navigation guide](guide/router) for an\n * overview of how the `Router` service should be used.\n *\n * @publicApi\n */\nclass RouterModule {\n    constructor(guard) { }\n    /**\n     * Creates and configures a module with all the router providers and directives.\n     * Optionally sets up an application listener to perform an initial navigation.\n     *\n     * When registering the NgModule at the root, import as follows:\n     *\n     * ```\n     * @NgModule({\n     *   imports: [RouterModule.forRoot(ROUTES)]\n     * })\n     * class MyNgModule {}\n     * ```\n     *\n     * @param routes An array of `Route` objects that define the navigation paths for the application.\n     * @param config An `ExtraOptions` configuration object that controls how navigation is performed.\n     * @return The new `NgModule`.\n     *\n     */\n    static forRoot(routes, config) {\n        return {\n            ngModule: RouterModule,\n            providers: [\n                ROUTER_PROVIDERS,\n                NG_DEV_MODE ? (config?.enableTracing ? withDebugTracing().ɵproviders : []) : [],\n                { provide: ROUTES, multi: true, useValue: routes },\n                {\n                    provide: ROUTER_FORROOT_GUARD,\n                    useFactory: provideForRootGuard,\n                    deps: [[Router, new Optional(), new SkipSelf()]]\n                },\n                { provide: ROUTER_CONFIGURATION, useValue: config ? config : {} },\n                config?.useHash ? provideHashLocationStrategy() : providePathLocationStrategy(),\n                provideRouterScroller(),\n                config?.preloadingStrategy ? withPreloading(config.preloadingStrategy).ɵproviders : [],\n                { provide: NgProbeToken, multi: true, useFactory: routerNgProbeToken },\n                config?.initialNavigation ? provideInitialNavigation(config) : [],\n                provideRouterInitializer(),\n            ],\n        };\n    }\n    /**\n     * Creates a module with all the router directives and a provider registering routes,\n     * without creating a new Router service.\n     * When registering for submodules and lazy-loaded submodules, create the NgModule as follows:\n     *\n     * ```\n     * @NgModule({\n     *   imports: [RouterModule.forChild(ROUTES)]\n     * })\n     * class MyNgModule {}\n     * ```\n     *\n     * @param routes An array of `Route` objects that define the navigation paths for the submodule.\n     * @return The new NgModule.\n     *\n     */\n    static forChild(routes) {\n        return {\n            ngModule: RouterModule,\n            providers: [{ provide: ROUTES, multi: true, useValue: routes }],\n        };\n    }\n}\nRouterModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterModule, deps: [{ token: ROUTER_FORROOT_GUARD, optional: true }], target: i0.ɵɵFactoryTarget.NgModule });\nRouterModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterModule, imports: [RouterOutlet, RouterLink, RouterLinkActive, ɵEmptyOutletComponent], exports: [RouterOutlet, RouterLink, RouterLinkActive, ɵEmptyOutletComponent] });\nRouterModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterModule, imports: [ɵEmptyOutletComponent] });\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"15.2.9\", ngImport: i0, type: RouterModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    imports: ROUTER_DIRECTIVES,\n                    exports: ROUTER_DIRECTIVES,\n                }]\n        }], ctorParameters: function () { return [{ type: undefined, decorators: [{\n                    type: Optional\n                }, {\n                    type: Inject,\n                    args: [ROUTER_FORROOT_GUARD]\n                }] }]; } });\n/**\n * For internal use by `RouterModule` only. Note that this differs from `withInMemoryRouterScroller`\n * because it reads from the `ExtraOptions` which should not be used in the standalone world.\n */\nfunction provideRouterScroller() {\n    return {\n        provide: ROUTER_SCROLLER,\n        useFactory: () => {\n            const viewportScroller = inject(ViewportScroller);\n            const zone = inject(NgZone);\n            const config = inject(ROUTER_CONFIGURATION);\n            const transitions = inject(NavigationTransitions);\n            const urlSerializer = inject(UrlSerializer);\n            if (config.scrollOffset) {\n                viewportScroller.setOffset(config.scrollOffset);\n            }\n            return new RouterScroller(urlSerializer, transitions, viewportScroller, zone, config);\n        },\n    };\n}\n// Note: For internal use only with `RouterModule`. Standalone setup via `provideRouter` should\n// provide hash location directly via `{provide: LocationStrategy, useClass: HashLocationStrategy}`.\nfunction provideHashLocationStrategy() {\n    return { provide: LocationStrategy, useClass: HashLocationStrategy };\n}\n// Note: For internal use only with `RouterModule`. Standalone setup via `provideRouter` does not\n// need this at all because `PathLocationStrategy` is the default factory for `LocationStrategy`.\nfunction providePathLocationStrategy() {\n    return { provide: LocationStrategy, useClass: PathLocationStrategy };\n}\nfunction provideForRootGuard(router) {\n    if (NG_DEV_MODE && router) {\n        throw new ɵRuntimeError(4007 /* RuntimeErrorCode.FOR_ROOT_CALLED_TWICE */, `The Router was provided more than once. This can happen if 'forRoot' is used outside of the root injector.` +\n            ` Lazy loaded modules should use RouterModule.forChild() instead.`);\n    }\n    return 'guarded';\n}\n// Note: For internal use only with `RouterModule`. Standalone router setup with `provideRouter`\n// users call `withXInitialNavigation` directly.\nfunction provideInitialNavigation(config) {\n    return [\n        config.initialNavigation === 'disabled' ? withDisabledInitialNavigation().ɵproviders : [],\n        config.initialNavigation === 'enabledBlocking' ?\n            withEnabledBlockingInitialNavigation().ɵproviders :\n            [],\n    ];\n}\n// TODO(atscott): This should not be in the public API\n/**\n * A [DI token](guide/glossary/#di-token) for the router initializer that\n * is called after the app is bootstrapped.\n *\n * @publicApi\n */\nconst ROUTER_INITIALIZER = new InjectionToken(NG_DEV_MODE ? 'Router Initializer' : '');\nfunction provideRouterInitializer() {\n    return [\n        // ROUTER_INITIALIZER token should be removed. It's public API but shouldn't be. We can just\n        // have `getBootstrapListener` directly attached to APP_BOOTSTRAP_LISTENER.\n        { provide: ROUTER_INITIALIZER, useFactory: getBootstrapListener },\n        { provide: APP_BOOTSTRAP_LISTENER, multi: true, useExisting: ROUTER_INITIALIZER },\n    ];\n}\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of the router package.\n */\n/**\n * @publicApi\n */\nconst VERSION = new Version('15.2.9');\n\n/**\n * @module\n * @description\n * Entry point for all public APIs of this package.\n */\n// This file only reexports content of the `src` folder. Keep it that way.\n\n// This file is not used to build this module. It is only used during editing\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { ActivatedRoute, ActivatedRouteSnapshot, ActivationEnd, ActivationStart, BaseRouteReuseStrategy, ChildActivationEnd, ChildActivationStart, ChildrenOutletContexts, DefaultTitleStrategy, DefaultUrlSerializer, GuardsCheckEnd, GuardsCheckStart, NavigationCancel, NavigationEnd, NavigationError, NavigationSkipped, NavigationStart, NoPreloading, OutletContext, PRIMARY_OUTLET, PreloadAllModules, PreloadingStrategy, ROUTER_CONFIGURATION, ROUTER_INITIALIZER, ROUTES, ResolveEnd, ResolveStart, RouteConfigLoadEnd, RouteConfigLoadStart, RouteReuseStrategy, Router, RouterEvent, RouterLink, RouterLinkActive, RouterLink as RouterLinkWithHref, RouterModule, RouterOutlet, RouterPreloader, RouterState, RouterStateSnapshot, RoutesRecognized, Scroll, TitleStrategy, UrlHandlingStrategy, UrlSegment, UrlSegmentGroup, UrlSerializer, UrlTree, VERSION, convertToParamMap, createUrlTreeFromSnapshot, defaultUrlMatcher, provideRouter, provideRoutes, withDebugTracing, withDisabledInitialNavigation, withEnabledBlockingInitialNavigation, withHashLocation, withInMemoryScrolling, withNavigationErrorHandler, withPreloading, withRouterConfig, ɵEmptyOutletComponent, ROUTER_PROVIDERS as ɵROUTER_PROVIDERS, afterNextNavigation as ɵafterNextNavigation, flatten as ɵflatten, withPreloading as ɵwithPreloading };\n","function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {\n  try {\n    var info = gen[key](arg);\n    var value = info.value;\n  } catch (error) {\n    reject(error);\n    return;\n  }\n  if (info.done) {\n    resolve(value);\n  } else {\n    Promise.resolve(value).then(_next, _throw);\n  }\n}\nexport default function _asyncToGenerator(fn) {\n  return function () {\n    var self = this,\n      args = arguments;\n    return new Promise(function (resolve, reject) {\n      var gen = fn.apply(self, args);\n      function _next(value) {\n        asyncGeneratorStep(gen, resolve, reject, _next, _throw, \"next\", value);\n      }\n      function _throw(err) {\n        asyncGeneratorStep(gen, resolve, reject, _next, _throw, \"throw\", err);\n      }\n      _next(undefined);\n    });\n  };\n}"],"x_google_ignoreList":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132]}