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,"../../../../../../packages/core/src/core_render3_private_export.ts","../../../../../../packages/core/src/codegen_private_exports.ts","../../../../../../packages/core/src/core.ts","../../../../../../packages/core/public_api.ts","../../../../../../packages/core/index.ts","../../../../../../packages/core/core.ts"],"sourcesContent":["/**\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 function getClosureSafeProperty(objWithPropertyToExtract: T): string {\n for (let key in objWithPropertyToExtract) {\n if (objWithPropertyToExtract[key] === getClosureSafeProperty as any) {\n return key;\n }\n }\n throw Error('Could not find renamed property on target object.');\n}\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 */\nexport function fillProperties(target: {[key: string]: string}, source: {[key: string]: string}) {\n for (const key in source) {\n if (source.hasOwnProperty(key) && !target.hasOwnProperty(key)) {\n target[key] = source[key];\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\nexport function stringify(token: any): string {\n if (typeof token === 'string') {\n return token;\n }\n\n if (Array.isArray(token)) {\n return '[' + token.map(stringify).join(', ') + ']';\n }\n\n if (token == null) {\n return '' + token;\n }\n\n if (token.overriddenName) {\n return `${token.overriddenName}`;\n }\n\n if (token.name) {\n return `${token.name}`;\n }\n\n const res = token.toString();\n\n if (res == null) {\n return '' + res;\n }\n\n const newLineIndex = res.indexOf('\\n');\n return newLineIndex === -1 ? res : res.substring(0, newLineIndex);\n}\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 */\nexport function concatStringsWithSpace(before: string|null, after: string|null): string {\n return (before == null || before === '') ?\n (after === null ? '' : after) :\n ((after == null || after === '') ? before : before + ' ' + after);\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\nimport {Type} from '../interface/type';\nimport {getClosureSafeProperty} from '../util/property';\nimport {stringify} from '../util/stringify';\n\n\n\n/**\n * An interface that a function passed into {@link forwardRef} has to implement.\n *\n * @usageNotes\n * ### Example\n *\n * {@example core/di/ts/forward_ref/forward_ref_spec.ts region='forward_ref_fn'}\n * @publicApi\n */\nexport interface ForwardRefFn {\n (): any;\n}\n\nconst __forward_ref__ = getClosureSafeProperty({__forward_ref__: getClosureSafeProperty});\n\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 */\nexport function forwardRef(forwardRefFn: ForwardRefFn): Type {\n (forwardRefFn).__forward_ref__ = forwardRef;\n (forwardRefFn).toString = function() {\n return stringify(this());\n };\n return (>forwardRefFn);\n}\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 */\nexport function resolveForwardRef(type: T): T {\n return isForwardRef(type) ? type() : type;\n}\n\n/** Checks whether a function is wrapped by a `forwardRef`. */\nexport function isForwardRef(fn: any): fn is() => any {\n return typeof fn === 'function' && fn.hasOwnProperty(__forward_ref__) &&\n fn.__forward_ref__ === forwardRef;\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 * Base URL for the error details page.\n *\n * Keep the files below in sync:\n * - packages/compiler-cli/src/ngtsc/diagnostics/src/error_details_base_url.ts\n * - packages/core/src/render3/error_details_base_url.ts\n */\nexport const ERROR_DETAILS_PAGE_BASE_URL = 'https://angular.io/errors';\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\nimport {ERROR_DETAILS_PAGE_BASE_URL} from './error_details_base_url';\n\nexport const enum RuntimeErrorCode {\n // Internal Errors\n\n // Change Detection Errors\n EXPRESSION_CHANGED_AFTER_CHECKED = '100',\n\n // Dependency Injection Errors\n CYCLIC_DI_DEPENDENCY = '200',\n PROVIDER_NOT_FOUND = '201',\n\n // Template Errors\n MULTIPLE_COMPONENTS_MATCH = '300',\n EXPORT_NOT_FOUND = '301',\n PIPE_NOT_FOUND = '302',\n UNKNOWN_BINDING = '303',\n UNKNOWN_ELEMENT = '304',\n TEMPLATE_STRUCTURE_ERROR = '305'\n\n // Styling Errors\n\n // Declarations Errors\n\n // i18n Errors\n\n // Compilation Errors\n}\n\nexport class RuntimeError extends Error {\n constructor(public code: RuntimeErrorCode, message: string) {\n super(formatRuntimeError(code, message));\n }\n}\n\n// Contains a set of error messages that have details guides at angular.io.\n// Full list of available error guides can be found at https://angular.io/errors\n/* tslint:disable:no-toplevel-property-access */\nexport const RUNTIME_ERRORS_WITH_GUIDES = new Set([\n RuntimeErrorCode.EXPRESSION_CHANGED_AFTER_CHECKED,\n RuntimeErrorCode.CYCLIC_DI_DEPENDENCY,\n RuntimeErrorCode.PROVIDER_NOT_FOUND,\n RuntimeErrorCode.MULTIPLE_COMPONENTS_MATCH,\n RuntimeErrorCode.EXPORT_NOT_FOUND,\n RuntimeErrorCode.PIPE_NOT_FOUND,\n]);\n/* tslint:enable:no-toplevel-property-access */\n\n/** Called to format a runtime error */\nexport function formatRuntimeError(code: RuntimeErrorCode, message: string): string {\n const fullCode = code ? `NG0${code}: ` : '';\n\n let errorMessage = `${fullCode}${message}`;\n\n // Some runtime errors are still thrown without `ngDevMode` (for example\n // `throwProviderNotFoundError`), so we add `ngDevMode` check here to avoid pulling\n // `RUNTIME_ERRORS_WITH_GUIDES` symbol into prod bundles.\n // TODO: revisit all instances where `RuntimeError` is thrown and see if `ngDevMode` can be added\n // there instead to tree-shake more devmode-only code (and eventually remove `ngDevMode` check\n // from this code).\n if (ngDevMode && RUNTIME_ERRORS_WITH_GUIDES.has(code)) {\n errorMessage = `${errorMessage}. Find more at ${ERROR_DETAILS_PAGE_BASE_URL}/NG0${code}`;\n }\n return errorMessage;\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 * 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 */\nexport function renderStringify(value: any): string {\n if (typeof value === 'string') return value;\n if (value == null) 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\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 */\nexport function stringifyForError(value: any): string {\n if (typeof value === 'function') 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\n return renderStringify(value);\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 */\nimport {InjectorType} from '../di/interface/defs';\nimport {stringify} from '../util/stringify';\nimport {RuntimeError, RuntimeErrorCode} from './error_code';\nimport {stringifyForError} from './util/stringify_utils';\n\n\n/** Called when directives inject each other (creating a circular dependency) */\nexport function throwCyclicDependencyError(token: string, path?: string[]): never {\n const depPath = path ? `. Dependency path: ${path.join(' > ')} > ${token}` : '';\n throw new RuntimeError(\n RuntimeErrorCode.CYCLIC_DI_DEPENDENCY,\n `Circular dependency in DI detected for ${token}${depPath}`);\n}\n\nexport function throwMixedMultiProviderError() {\n throw new Error(`Cannot mix multi providers and regular providers`);\n}\n\nexport function throwInvalidProviderError(\n ngModuleType?: InjectorType, providers?: any[], provider?: any) {\n let ngModuleDetail = '';\n if (ngModuleType && providers) {\n const providerDetail = providers.map(v => v == provider ? '?' + provider + '?' : '...');\n ngModuleDetail =\n ` - only instances of Provider and Type are allowed, got: [${providerDetail.join(', ')}]`;\n }\n\n throw new Error(\n `Invalid provider for the NgModule '${stringify(ngModuleType)}'` + ngModuleDetail);\n}\n\n\n/** Throws an error when a token is not found in DI. */\nexport function throwProviderNotFoundError(token: any, injectorName?: string): never {\n const injectorDetails = injectorName ? ` in ${injectorName}` : '';\n throw new RuntimeError(\n RuntimeErrorCode.PROVIDER_NOT_FOUND,\n `No provider for ${stringifyForError(token)} found${injectorDetails}`);\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// The functions in this file verify that the assumptions we are making\n// about state in an instruction are correct before implementing any logic.\n// They are meant only to be called in dev mode as sanity checks.\n\nimport {stringify} from './stringify';\n\nexport function assertNumber(actual: any, msg: string): asserts actual is number {\n if (!(typeof actual === 'number')) {\n throwError(msg, typeof actual, 'number', '===');\n }\n}\n\nexport function assertNumberInRange(\n actual: any, minInclusive: number, maxInclusive: number): asserts actual is number {\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}\n\nexport function assertString(actual: any, msg: string): asserts actual is string {\n if (!(typeof actual === 'string')) {\n throwError(msg, actual === null ? 'null' : typeof actual, 'string', '===');\n }\n}\n\nexport function assertFunction(actual: any, msg: string): asserts actual is Function {\n if (!(typeof actual === 'function')) {\n throwError(msg, actual === null ? 'null' : typeof actual, 'function', '===');\n }\n}\n\nexport function assertEqual(actual: T, expected: T, msg: string) {\n if (!(actual == expected)) {\n throwError(msg, actual, expected, '==');\n }\n}\n\nexport function assertNotEqual(actual: T, expected: T, msg: string): asserts actual is T {\n if (!(actual != expected)) {\n throwError(msg, actual, expected, '!=');\n }\n}\n\nexport function assertSame(actual: T, expected: T, msg: string): asserts actual is T {\n if (!(actual === expected)) {\n throwError(msg, actual, expected, '===');\n }\n}\n\nexport function assertNotSame(actual: T, expected: T, msg: string) {\n if (!(actual !== expected)) {\n throwError(msg, actual, expected, '!==');\n }\n}\n\nexport function assertLessThan(actual: T, expected: T, msg: string): asserts actual is T {\n if (!(actual < expected)) {\n throwError(msg, actual, expected, '<');\n }\n}\n\nexport function assertLessThanOrEqual(actual: T, expected: T, msg: string): asserts actual is T {\n if (!(actual <= expected)) {\n throwError(msg, actual, expected, '<=');\n }\n}\n\nexport function assertGreaterThan(actual: T, expected: T, msg: string): asserts actual is T {\n if (!(actual > expected)) {\n throwError(msg, actual, expected, '>');\n }\n}\n\nexport function assertGreaterThanOrEqual(\n actual: T, expected: T, msg: string): asserts actual is T {\n if (!(actual >= expected)) {\n throwError(msg, actual, expected, '>=');\n }\n}\n\nexport function assertNotDefined(actual: T, msg: string) {\n if (actual != null) {\n throwError(msg, actual, null, '==');\n }\n}\n\nexport function assertDefined(actual: T|null|undefined, msg: string): asserts actual is T {\n if (actual == null) {\n throwError(msg, actual, null, '!=');\n }\n}\n\nexport function throwError(msg: string): never;\nexport function throwError(msg: string, actual: any, expected: any, comparison: string): never;\nexport function throwError(msg: string, actual?: any, expected?: any, comparison?: string): never {\n throw new Error(\n `ASSERTION ERROR: ${msg}` +\n (comparison == null ? '' : ` [Expected=> ${expected} ${comparison} ${actual} <=Actual]`));\n}\n\nexport function assertDomNode(node: any): asserts node is 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}\n\n\nexport function assertIndexInRange(arr: any[], index: number) {\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}\n\n\nexport function assertOneOf(value: any, ...validValues: any[]) {\n if (validValues.indexOf(value) !== -1) return true;\n throwError(`Expected value to be one of ${JSON.stringify(validValues)} but was ${\n JSON.stringify(value)}.`);\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\nimport {Type} from '../../interface/type';\nimport {getClosureSafeProperty} from '../../util/property';\nimport {ClassProvider, ConstructorProvider, ExistingProvider, FactoryProvider, StaticClassProvider, ValueProvider} from './provider';\n\n\n\n/**\n * Information about how a type or `InjectionToken` interfaces with the DI system.\n *\n * At a minimum, this includes a `factory` which defines how to create the given type `T`, possibly\n * requesting injection of other types if necessary.\n *\n * Optionally, a `providedIn` parameter specifies that the given type belongs to a particular\n * `Injector`, `NgModule`, or a special scope (e.g. `'root'`). A value of `null` indicates\n * that the injectable does not belong to any scope.\n *\n * @codeGenApi\n * @publicApi The ViewEngine compiler emits code with this type for injectables. This code is\n * deployed to npm, and should be treated as public api.\n\n */\nexport interface ɵɵInjectableDeclaration {\n /**\n * Specifies that the given type belongs to a particular injector:\n * - `InjectorType` such as `NgModule`,\n * - `'root'` the root injector\n * - `'any'` all injectors.\n * - `null`, does not belong to any injector. Must be explicitly listed in the injector\n * `providers`.\n */\n providedIn: InjectorType|'root'|'platform'|'any'|null;\n\n /**\n * The token to which this definition belongs.\n *\n * Note that this may not be the same as the type that the `factory` will create.\n */\n token: unknown;\n\n /**\n * Factory method to execute to create an instance of the injectable.\n */\n factory: (t?: Type) => T;\n\n /**\n * In a case of no explicit injector, a location where the instance of the injectable is stored.\n */\n value: T|undefined;\n}\n\n/**\n * Information about the providers to be included in an `Injector` as well as how the given type\n * which carries the information should be created by the DI system.\n *\n * An `InjectorDef` can import other types which have `InjectorDefs`, forming a deep nested\n * structure of providers with a defined priority (identically to how `NgModule`s also have\n * an import/dependency structure).\n *\n * NOTE: This is a private type and should not be exported\n *\n * @codeGenApi\n */\nexport interface ɵɵInjectorDef {\n // TODO(alxhub): Narrow down the type here once decorators properly change the return type of the\n // class they are decorating (to add the ɵprov property for example).\n providers: (Type|ValueProvider|ExistingProvider|FactoryProvider|ConstructorProvider|\n StaticClassProvider|ClassProvider|any[])[];\n\n imports: (InjectorType|InjectorTypeWithProviders)[];\n}\n\n/**\n * A `Type` which has a `ɵprov: ɵɵInjectableDeclaration` static field.\n *\n * `InjectableType`s contain their own Dependency Injection metadata and are usable in an\n * `InjectorDef`-based `StaticInjector.\n *\n * @publicApi\n */\nexport interface InjectableType extends Type {\n /**\n * Opaque type whose structure is highly version dependent. Do not rely on any properties.\n */\n ɵprov: unknown;\n}\n\n/**\n * A type which has an `InjectorDef` static field.\n *\n * `InjectorTypes` can be used to configure a `StaticInjector`.\n *\n * This is an opaque type whose structure is highly version dependent. Do not rely on any\n * properties.\n *\n * @publicApi\n */\nexport interface InjectorType extends Type {\n ɵfac?: unknown;\n ɵinj: unknown;\n}\n\n/**\n * Describes the `InjectorDef` equivalent of a `ModuleWithProviders`, an `InjectorType` with an\n * associated array of providers.\n *\n * Objects of this type can be listed in the imports section of an `InjectorDef`.\n *\n * NOTE: This is a private type and should not be exported\n */\nexport interface InjectorTypeWithProviders {\n ngModule: InjectorType;\n providers?: (Type|ValueProvider|ExistingProvider|FactoryProvider|ConstructorProvider|\n StaticClassProvider|ClassProvider|any[])[];\n}\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 */\nexport function ɵɵdefineInjectable(opts: {\n token: unknown,\n providedIn?: Type|'root'|'platform'|'any'|null, factory: () => T,\n}): unknown {\n return {\n token: opts.token,\n providedIn: opts.providedIn as any || null,\n factory: opts.factory,\n value: undefined,\n } as ɵɵInjectableDeclaration;\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 */\nexport const defineInjectable = ɵɵdefineInjectable;\n\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 */\nexport function ɵɵdefineInjector(options: {providers?: any[], imports?: any[]}): unknown {\n return {providers: options.providers || [], imports: options.imports || []};\n}\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 */\nexport function getInjectableDef(type: any): ɵɵInjectableDeclaration|null {\n return getOwnDefinition(type, NG_PROV_DEF) || getOwnDefinition(type, NG_INJECTABLE_DEF);\n}\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: any, field: string): ɵɵInjectableDeclaration|null {\n return type.hasOwnProperty(field) ? type[field] : null;\n}\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 */\nexport function getInheritedInjectableDef(type: any): ɵɵInjectableDeclaration|null {\n const def = type && (type[NG_PROV_DEF] || type[NG_INJECTABLE_DEF]);\n\n if (def) {\n const typeName = getTypeName(type);\n // TODO(FW-1307): Re-add ngDevMode when closure can handle it\n // ngDevMode &&\n console.warn(\n `DEPRECATED: DI is instantiating a token \"${\n typeName}\" 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 \"${\n typeName}\" class.`);\n return def;\n } else {\n return null;\n }\n}\n\n/** Gets the name of a type, accounting for some cross-browser differences. */\nfunction getTypeName(type: any): string {\n // `Function.prototype.name` behaves differently between IE and other browsers. In most browsers\n // it'll always return the name of the function itself, no matter how many other functions it\n // inherits from. On IE the function doesn't have its own `name` property, but it takes it from\n // the lowest level in the prototype chain. E.g. if we have `class Foo extends Parent` most\n // browsers will evaluate `Foo.name` to `Foo` while IE will return `Parent`. We work around\n // the issue by converting the function to a string and parsing its name out that way via a regex.\n if (type.hasOwnProperty('name')) {\n return type.name;\n }\n\n const match = ('' + type).match(/^function\\s*([^\\s(]+)/);\n return match === null ? '' : match[1];\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 */\nexport function getInjectorDef(type: any): ɵɵInjectorDef|null {\n return type && (type.hasOwnProperty(NG_INJ_DEF) || type.hasOwnProperty(NG_INJECTOR_DEF)) ?\n (type as any)[NG_INJ_DEF] :\n null;\n}\n\nexport const NG_PROV_DEF = getClosureSafeProperty({ɵprov: getClosureSafeProperty});\nexport const NG_INJ_DEF = getClosureSafeProperty({ɵinj: getClosureSafeProperty});\n\n// We need to keep these around so we can read off old defs if new defs are unavailable\nexport const NG_INJECTABLE_DEF = getClosureSafeProperty({ngInjectableDef: getClosureSafeProperty});\nexport const NG_INJECTOR_DEF = getClosureSafeProperty({ngInjectorDef: getClosureSafeProperty});\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/**\n * Special flag indicating that a decorator is of type `Inject`. It's used to make `Inject`\n * decorator tree-shakable (so we don't have to rely on the `instanceof` checks).\n * Note: this flag is not included into the `InjectFlags` since it's an internal-only API.\n */\nexport const enum DecoratorFlags {\n Inject = -1\n}\n\n/**\n * Injection flags for DI.\n *\n * @publicApi\n */\nexport enum InjectFlags {\n // TODO(alxhub): make this 'const' (and remove `InternalInjectFlags` enum) when ngc no longer\n // writes exports of it into ngfactory files.\n\n /** Check self and check parent injector if needed */\n Default = 0b0000,\n\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 Host = 0b0001,\n\n /** Don't ascend to ancestors of the node requesting injection. */\n Self = 0b0010,\n\n /** Skip the node that is requesting injection. */\n SkipSelf = 0b0100,\n\n /** Inject `defaultValue` instead if token not found. */\n Optional = 0b1000,\n}\n\n/**\n * This enum is an exact copy of the `InjectFlags` enum above, but the difference is that this is a\n * const enum, so actual enum values would be inlined in generated code. The `InjectFlags` enum can\n * be turned into a const enum when ViewEngine is removed (see TODO at the `InjectFlags` enum\n * above). The benefit of inlining is that we can use these flags at the top level without affecting\n * tree-shaking (see \"no-toplevel-property-access\" tslint rule for more info).\n * Keep this enum in sync with `InjectFlags` enum above.\n */\nexport const enum InternalInjectFlags {\n /** Check self and check parent injector if needed */\n Default = 0b0000,\n\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 Host = 0b0001,\n\n /** Don't ascend to ancestors of the node requesting injection. */\n Self = 0b0010,\n\n /** Skip the node that is requesting injection. */\n SkipSelf = 0b0100,\n\n /** Inject `defaultValue` instead if token not found. */\n Optional = 0b1000,\n\n /**\n * This token is being injected into a pipe.\n *\n * This flag is intentionally not in the public facing `InjectFlags` because it is only added by\n * the compiler and is not a developer applicable flag.\n */\n ForPipe = 0b10000,\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\nimport {throwProviderNotFoundError} from '../render3/errors_di';\nimport {assertNotEqual} from '../util/assert';\nimport {stringify} from '../util/stringify';\n\nimport {getInjectableDef, ɵɵInjectableDeclaration} from './interface/defs';\nimport {InjectFlags} from './interface/injector';\nimport {ProviderToken} from './provider_token';\n\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: ((token: ProviderToken, flags?: InjectFlags) => T | null)|\n undefined;\nexport function getInjectImplementation() {\n return _injectImplementation;\n}\n\n\n/**\n * Sets the current inject implementation.\n */\nexport function setInjectImplementation(\n impl: ((token: ProviderToken, flags?: InjectFlags) => T | null)|\n undefined): ((token: ProviderToken, flags?: InjectFlags) => T | null)|undefined {\n const previous = _injectImplementation;\n _injectImplementation = impl;\n return previous;\n}\n\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 */\nexport function injectRootLimpMode(\n token: ProviderToken, notFoundValue: T|undefined, flags: InjectFlags): T|null {\n const injectableDef: ɵɵInjectableDeclaration|null = 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) return null;\n if (notFoundValue !== undefined) return notFoundValue;\n throwProviderNotFoundError(stringify(token), 'Injector');\n}\n\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 */\nexport function assertInjectImplementationNotEqual(\n fn: ((token: ProviderToken, flags?: InjectFlags) => T | null)) {\n ngDevMode &&\n assertNotEqual(_injectImplementation, fn, 'Calling ɵɵinject would cause infinite recursion');\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 * 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 */\nexport function noSideEffects(fn: () => T): T {\n return {toString: fn}.toString() as unknown as T;\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/**\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 */\nexport enum 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 OnPush = 0,\n\n /**\n * Use the default `CheckAlways` strategy, in which change detection is automatic until\n * explicitly deactivated.\n */\n Default = 1,\n}\n\n/**\n * Defines the possible states of the default change detector.\n * @see `ChangeDetectorRef`\n */\nexport enum ChangeDetectorStatus {\n /**\n * A state in which, after calling `detectChanges()`, the change detector\n * state becomes `Checked`, and must be explicitly invoked or reactivated.\n */\n CheckOnce,\n\n /**\n * A state in which change detection is skipped until the change detector mode\n * becomes `CheckOnce`.\n */\n Checked,\n\n /**\n * A state in which change detection continues automatically until explicitly\n * deactivated.\n */\n CheckAlways,\n\n /**\n * A state in which a change detector sub tree is not a part of the main tree and\n * should be skipped.\n */\n Detached,\n\n /**\n * Indicates that the change detector encountered an error checking a binding\n * or calling a directive lifecycle method and is now in an inconsistent state. Change\n * detectors in this state do not detect changes.\n */\n Errored,\n\n /**\n * Indicates that the change detector has been destroyed.\n */\n Destroyed,\n}\n\n/**\n * Reports whether a given strategy is currently the default for change detection.\n * @param changeDetectionStrategy The strategy to check.\n * @returns True if the given strategy is the current default, false otherwise.\n * @see `ChangeDetectorStatus`\n * @see `ChangeDetectorRef`\n */\nexport function isDefaultChangeDetectionStrategy(changeDetectionStrategy: ChangeDetectionStrategy):\n boolean {\n return changeDetectionStrategy == null ||\n changeDetectionStrategy === ChangeDetectionStrategy.Default;\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 * Defines template and style encapsulation options available for Component's {@link Component}.\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 */\nexport enum ViewEncapsulation {\n /**\n * Emulate `Native` scoping of styles by adding an attribute containing surrogate id to the Host\n * Element and pre-processing the style rules provided via {@link Component#styles styles} or\n * {@link Component#styleUrls styleUrls}, and adding the new Host Element attribute to all\n * selectors.\n *\n * This is the default option.\n */\n Emulated = 0,\n\n // Historically the 1 value was for `Native` encapsulation which has been removed as of v11.\n\n /**\n * Don't provide any template or style encapsulation.\n */\n None = 2,\n\n /**\n * Use Shadow DOM to encapsulate styles.\n *\n * For the DOM this means using modern [Shadow\n * DOM](https://developer.mozilla.org/en-US/docs/Web/Web_Components/Using_shadow_DOM) and\n * creating a ShadowRoot for Component's Host Element.\n */\n ShadowDom = 3\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// TODO(jteplitz602): Load WorkerGlobalScope from lib.webworker.d.ts file #3492\ndeclare var WorkerGlobalScope: any /** TODO #9100 */;\n// CommonJS / Node have global context exposed as \"global\" variable.\n// We don't want to include the whole node.d.ts this this compilation unit so we'll just fake\n// the global \"global\" var for now.\ndeclare var global: any /** TODO #9100 */;\n\nconst __globalThis = typeof globalThis !== 'undefined' && globalThis;\nconst __window = typeof window !== 'undefined' && window;\nconst __self = typeof self !== 'undefined' && typeof WorkerGlobalScope !== 'undefined' &&\n self instanceof WorkerGlobalScope && self;\nconst __global = typeof global !== 'undefined' && global;\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.\nconst _global = __globalThis || __global || __window || __self;\n\n/**\n * Attention: whenever providing a new value, be sure to add an\n * entry into the corresponding `....externs.js` file,\n * so that closure won't use that global for its purposes.\n */\nexport {_global as global};\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\nimport {global} from './global';\n\ndeclare global {\n /**\n * Values of ngDevMode\n * Depending on the current state of the application, ngDevMode may have one of several values.\n *\n * For convenience, the “truthy” value which enables dev mode is also an object which contains\n * Angular’s performance counters. This is not necessary, but cuts down on boilerplate for the\n * perf counters.\n *\n * ngDevMode may also be set to false. This can happen in one of a few ways:\n * - The user explicitly sets `window.ngDevMode = false` somewhere in their app.\n * - The user calls `enableProdMode()`.\n * - The URL contains a `ngDevMode=false` text.\n * Finally, ngDevMode may not have been defined at all.\n */\n const ngDevMode: null|NgDevModePerfCounters;\n interface NgDevModePerfCounters {\n namedConstructors: boolean;\n firstCreatePass: number;\n tNode: number;\n tView: number;\n rendererCreateTextNode: number;\n rendererSetText: number;\n rendererCreateElement: number;\n rendererAddEventListener: number;\n rendererSetAttribute: number;\n rendererRemoveAttribute: number;\n rendererSetProperty: number;\n rendererSetClassName: number;\n rendererAddClass: number;\n rendererRemoveClass: number;\n rendererSetStyle: number;\n rendererRemoveStyle: number;\n rendererDestroy: number;\n rendererDestroyNode: number;\n rendererMoveNode: number;\n rendererRemoveNode: number;\n rendererAppendChild: number;\n rendererInsertBefore: number;\n rendererCreateComment: number;\n }\n}\n\nexport function ngDevModeResetPerfCounters(): NgDevModePerfCounters {\n const locationString = typeof location !== 'undefined' ? location.toString() : '';\n const newCounters: NgDevModePerfCounters = {\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\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/**\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 */\nexport function initNgDevMode(): boolean {\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","/**\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 */\nimport {initNgDevMode} from './ng_dev_mode';\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 */\n\nexport const EMPTY_OBJ: {} = {};\nexport const EMPTY_ARRAY: any[] = [];\n\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","/**\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\nimport {getClosureSafeProperty} from '../util/property';\n\nexport const NG_COMP_DEF = getClosureSafeProperty({ɵcmp: getClosureSafeProperty});\nexport const NG_DIR_DEF = getClosureSafeProperty({ɵdir: getClosureSafeProperty});\nexport const NG_PIPE_DEF = getClosureSafeProperty({ɵpipe: getClosureSafeProperty});\nexport const NG_MOD_DEF = getClosureSafeProperty({ɵmod: getClosureSafeProperty});\nexport const NG_LOC_ID_DEF = getClosureSafeProperty({ɵloc: getClosureSafeProperty});\nexport const NG_FACTORY_DEF = getClosureSafeProperty({ɵfac: getClosureSafeProperty});\n\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.\nexport const NG_ELEMENT_ID = getClosureSafeProperty({__NG_ELEMENT_ID__: getClosureSafeProperty});\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\nimport {ChangeDetectionStrategy} from '../change_detection/constants';\nimport {Mutable, Type} from '../interface/type';\nimport {NgModuleDef, NgModuleType} from '../metadata/ng_module_def';\nimport {SchemaMetadata} from '../metadata/schema';\nimport {ViewEncapsulation} from '../metadata/view';\nimport {noSideEffects} from '../util/closure';\nimport {EMPTY_ARRAY, EMPTY_OBJ} from '../util/empty';\nimport {initNgDevMode} from '../util/ng_dev_mode';\nimport {stringify} from '../util/stringify';\nimport {NG_COMP_DEF, NG_DIR_DEF, NG_LOC_ID_DEF, NG_MOD_DEF, NG_PIPE_DEF} from './fields';\nimport {ComponentDef, ComponentDefFeature, ComponentTemplate, ComponentType, ContentQueriesFunction, DirectiveDef, DirectiveDefFeature, DirectiveTypesOrFactory, HostBindingsFunction, PipeDef, PipeTypesOrFactory, ViewQueriesFunction} from './interfaces/definition';\nimport {TAttributes, TConstantsOrFactory} from './interfaces/node';\nimport {CssSelectorList} from './interfaces/projection';\n\n\nlet _renderCompCount = 0;\n\n\n/**\n * Create a component definition object.\n *\n *\n * # Example\n * ```\n * class MyDirective {\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 */\nexport function ɵɵdefineComponent(componentDefinition: {\n /**\n * Directive type, needed to configure the injector.\n */\n type: Type;\n\n /** The selectors that will be used to match nodes to this component. */\n selectors?: CssSelectorList;\n\n /**\n * The number of nodes, local refs, and pipes in this component template.\n *\n * Used to calculate the length of this component's LView array, so we\n * can pre-fill the array and set the binding start index.\n */\n // TODO(kara): remove queries from this count\n decls: number;\n\n /**\n * The number of bindings in this component template (including pure fn bindings).\n *\n * Used to calculate the length of this component's LView array, so we\n * can pre-fill the array and set the host binding start index.\n */\n vars: number;\n\n /**\n * A map of input names.\n *\n * The format is in: `{[actualPropertyName: string]:(string|[string, string])}`.\n *\n * Given:\n * ```\n * class MyComponent {\n * @Input()\n * publicInput1: string;\n *\n * @Input('publicInput2')\n * declaredInput2: string;\n * }\n * ```\n *\n * is described as:\n * ```\n * {\n * publicInput1: 'publicInput1',\n * declaredInput2: ['publicInput2', 'declaredInput2'],\n * }\n * ```\n *\n * Which the minifier may translate to:\n * ```\n * {\n * minifiedPublicInput1: 'publicInput1',\n * minifiedDeclaredInput2: ['publicInput2', 'declaredInput2'],\n * }\n * ```\n *\n * This allows the render to re-construct the minified, public, and declared names\n * of properties.\n *\n * NOTE:\n * - Because declared and public name are usually same we only generate the array\n * `['public', 'declared']` format when they differ.\n * - The reason why this API and `outputs` API is not the same is that `NgOnChanges` has\n * inconsistent behavior in that it uses declared names rather than minified or public. For\n * this reason `NgOnChanges` will be deprecated and removed in future version and this\n * API will be simplified to be consistent with `output`.\n */\n inputs?: {[P in keyof T]?: string | [string, string]};\n\n /**\n * A map of output names.\n *\n * The format is in: `{[actualPropertyName: string]:string}`.\n *\n * Which the minifier may translate to: `{[minifiedPropertyName: string]:string}`.\n *\n * This allows the render to re-construct the minified and non-minified names\n * of properties.\n */\n outputs?: {[P in keyof T]?: string};\n\n /**\n * Function executed by the parent template to allow child directive to apply host bindings.\n */\n hostBindings?: HostBindingsFunction;\n\n /**\n * The number of bindings in this directive `hostBindings` (including pure fn bindings).\n *\n * Used to calculate the length of the component's LView array, so we\n * can pre-fill the array and set the host binding start index.\n */\n hostVars?: number;\n\n /**\n * Assign static attribute values to a host element.\n *\n * This property will assign static attribute values as well as class and style\n * values to a host element. Since attribute values can consist of different types of values, the\n * `hostAttrs` array must include the values in the following format:\n *\n * attrs = [\n * // static attributes (like `title`, `name`, `id`...)\n * attr1, value1, attr2, value,\n *\n * // a single namespace value (like `x:id`)\n * NAMESPACE_MARKER, namespaceUri1, name1, value1,\n *\n * // another single namespace value (like `x:name`)\n * NAMESPACE_MARKER, namespaceUri2, name2, value2,\n *\n * // a series of CSS classes that will be applied to the element (no spaces)\n * CLASSES_MARKER, class1, class2, class3,\n *\n * // a series of CSS styles (property + value) that will be applied to the element\n * STYLES_MARKER, prop1, value1, prop2, value2\n * ]\n *\n * All non-class and non-style attributes must be defined at the start of the list\n * first before all class and style values are set. When there is a change in value\n * type (like when classes and styles are introduced) a marker must be used to separate\n * the entries. The marker values themselves are set via entries found in the\n * [AttributeMarker] enum.\n */\n hostAttrs?: TAttributes;\n\n /**\n * Function to create instances of content queries associated with a given directive.\n */\n contentQueries?: ContentQueriesFunction;\n\n /**\n * Defines the name that can be used in the template to assign this directive to a variable.\n *\n * See: {@link Directive.exportAs}\n */\n exportAs?: string[];\n\n /**\n * Template function use for rendering DOM.\n *\n * This function has following structure.\n *\n * ```\n * function Template(ctx:T, creationMode: boolean) {\n * if (creationMode) {\n * // Contains creation mode instructions.\n * }\n * // Contains binding update instructions\n * }\n * ```\n *\n * Common instructions are:\n * Creation mode instructions:\n * - `elementStart`, `elementEnd`\n * - `text`\n * - `container`\n * - `listener`\n *\n * Binding update instructions:\n * - `bind`\n * - `elementAttribute`\n * - `elementProperty`\n * - `elementClass`\n * - `elementStyle`\n *\n */\n template: ComponentTemplate;\n\n /**\n * Constants for the nodes in the component's view.\n * Includes attribute arrays, local definition arrays etc.\n */\n consts?: TConstantsOrFactory;\n\n /**\n * An array of `ngContent[selector]` values that were found in the template.\n */\n ngContentSelectors?: string[];\n\n /**\n * Additional set of instructions specific to view query processing. This could be seen as a\n * set of instruction to be inserted into the template function.\n *\n * Query-related instructions need to be pulled out to a specific function as a timing of\n * execution is different as compared to all other instructions (after change detection hooks but\n * before view hooks).\n */\n viewQuery?: ViewQueriesFunction| null;\n\n /**\n * A list of optional features to apply.\n *\n * See: {@link NgOnChangesFeature}, {@link ProvidersFeature}\n */\n features?: ComponentDefFeature[];\n\n /**\n * Defines template and style encapsulation options available for Component's {@link Component}.\n */\n encapsulation?: ViewEncapsulation;\n\n /**\n * Defines arbitrary developer-defined data to be stored on a renderer instance.\n * This is useful for renderers that delegate to other renderers.\n *\n * see: animation\n */\n data?: {[kind: string]: any};\n\n /**\n * A set of styles that the component needs to be present for component to render correctly.\n */\n styles?: string[];\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 changeDetection?: ChangeDetectionStrategy;\n\n /**\n * Registry of directives and components that may be found in this component's view.\n *\n * The property is either an array of `DirectiveDef`s or a function which returns the array of\n * `DirectiveDef`s. The function is necessary to be able to support forward declarations.\n */\n directives?: DirectiveTypesOrFactory | null;\n\n /**\n * Registry of pipes that may be found in this component's view.\n *\n * The property is either an array of `PipeDefs`s or a function which returns the array of\n * `PipeDefs`s. The function is necessary to be able to support forward declarations.\n */\n pipes?: PipeTypesOrFactory | null;\n\n /**\n * The set of schemas that declare elements to be allowed in the component's template.\n */\n schemas?: SchemaMetadata[] | null;\n}): unknown {\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\n const type = componentDefinition.type;\n const declaredInputs: {[key: string]: string} = {} as any;\n const def: Mutable, keyof ComponentDef> = {\n type: type,\n providersResolver: null,\n decls: componentDefinition.decls,\n vars: componentDefinition.vars,\n factory: null,\n template: componentDefinition.template || null!,\n consts: componentDefinition.consts || null,\n ngContentSelectors: componentDefinition.ngContentSelectors,\n hostBindings: componentDefinition.hostBindings || null,\n hostVars: componentDefinition.hostVars || 0,\n hostAttrs: componentDefinition.hostAttrs || null,\n contentQueries: componentDefinition.contentQueries || null,\n declaredInputs: declaredInputs,\n inputs: null!, // assigned in noSideEffects\n outputs: null!, // assigned in noSideEffects\n exportAs: componentDefinition.exportAs || null,\n onPush: componentDefinition.changeDetection === ChangeDetectionStrategy.OnPush,\n directiveDefs: null!, // assigned in noSideEffects\n pipeDefs: null!, // assigned in noSideEffects\n selectors: componentDefinition.selectors || EMPTY_ARRAY,\n viewQuery: componentDefinition.viewQuery || null,\n features: componentDefinition.features as DirectiveDefFeature[] || null,\n data: componentDefinition.data || {},\n // TODO(misko): convert ViewEncapsulation into const enum so that it can be used\n // directly in the next line. Also `None` should be 0 not 2.\n encapsulation: componentDefinition.encapsulation || ViewEncapsulation.Emulated,\n id: 'c',\n styles: componentDefinition.styles || EMPTY_ARRAY,\n _: null,\n setInput: null,\n schemas: componentDefinition.schemas || null,\n tView: null,\n };\n const directiveTypes = componentDefinition.directives!;\n const feature = componentDefinition.features;\n const pipeTypes = componentDefinition.pipes!;\n def.id += _renderCompCount++;\n def.inputs = invertObject(componentDefinition.inputs, declaredInputs),\n def.outputs = invertObject(componentDefinition.outputs),\n feature && feature.forEach((fn) => fn(def));\n def.directiveDefs = directiveTypes ?\n () => (typeof directiveTypes === 'function' ? directiveTypes() : directiveTypes)\n .map(extractDirectiveDef) :\n null;\n def.pipeDefs = pipeTypes ?\n () => (typeof pipeTypes === 'function' ? pipeTypes() : pipeTypes).map(extractPipeDef) :\n null;\n\n return def;\n });\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 */\nexport function ɵɵsetComponentScope(\n type: ComponentType, directives: Type[], pipes: Type[]): void {\n const def = (type.ɵcmp as ComponentDef);\n def.directiveDefs = () => directives.map(extractDirectiveDef);\n def.pipeDefs = () => pipes.map(extractPipeDef);\n}\n\nexport function extractDirectiveDef(type: Type): DirectiveDef|ComponentDef {\n const def = getComponentDef(type) || getDirectiveDef(type);\n if (ngDevMode && !def) {\n throw new Error(`'${type.name}' is neither 'ComponentType' or 'DirectiveType'.`);\n }\n return def!;\n}\n\nexport function extractPipeDef(type: Type): PipeDef {\n const def = getPipeDef(type);\n if (ngDevMode && !def) {\n throw new Error(`'${type.name}' is not a 'PipeType'.`);\n }\n return def!;\n}\n\nexport const autoRegisterModuleById: {[id: string]: NgModuleType} = {};\n\n/**\n * @codeGenApi\n */\nexport function ɵɵdefineNgModule(def: {\n /** Token representing the module. Used by DI. */\n type: T;\n\n /** List of components to bootstrap. */\n bootstrap?: Type[] | (() => Type[]);\n\n /** List of components, directives, and pipes declared by this module. */\n declarations?: Type[] | (() => Type[]);\n\n /** List of modules or `ModuleWithProviders` imported by this module. */\n imports?: Type[] | (() => Type[]);\n\n /**\n * List of modules, `ModuleWithProviders`, components, directives, or pipes exported by this\n * module.\n */\n exports?: Type[] | (() => Type[]);\n\n /** The set of schemas that declare elements to be allowed in the NgModule. */\n schemas?: SchemaMetadata[] | null;\n\n /** Unique ID for the module that is used with `getModuleFactory`. */\n id?: string | null;\n}): unknown {\n return noSideEffects(() => {\n const res: NgModuleDef = {\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 if (def.id != null) {\n autoRegisterModuleById[def.id!] = def.type as unknown as NgModuleType;\n }\n return res;\n });\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 */\nexport function ɵɵsetNgModuleScope(type: any, scope: {\n /** List of components, directives, and pipes declared by this module. */\n declarations?: Type[]|(() => Type[]);\n\n /** List of modules or `ModuleWithProviders` imported by this module. */\n imports?: Type[] | (() => Type[]);\n\n /**\n * List of modules, `ModuleWithProviders`, components, directives, or pipes exported by this\n * module.\n */\n exports?: Type[] | (() => Type[]);\n}): unknown {\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/**\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(\n obj?: {[P in keyof T]?: string|[string, string]},\n secondary?: {[key: string]: string}): {[P in keyof T]: string} {\n if (obj == null) return EMPTY_OBJ as any;\n const newLookup: any = {};\n for (const minifiedKey in obj) {\n if (obj.hasOwnProperty(minifiedKey)) {\n let publicName: string|[string, string] = 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 as string);\n }\n }\n }\n return newLookup;\n}\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 */\nexport const ɵɵdefineDirective =\n ɵɵdefineComponent as any as(directiveDefinition: {\n /**\n * Directive type, needed to configure the injector.\n */\n type: Type;\n\n /** The selectors that will be used to match nodes to this directive. */\n selectors?: CssSelectorList;\n\n /**\n * A map of input names.\n *\n * The format is in: `{[actualPropertyName: string]:(string|[string, string])}`.\n *\n * Given:\n * ```\n * class MyComponent {\n * @Input()\n * publicInput1: string;\n *\n * @Input('publicInput2')\n * declaredInput2: string;\n * }\n * ```\n *\n * is described as:\n * ```\n * {\n * publicInput1: 'publicInput1',\n * declaredInput2: ['declaredInput2', 'publicInput2'],\n * }\n * ```\n *\n * Which the minifier may translate to:\n * ```\n * {\n * minifiedPublicInput1: 'publicInput1',\n * minifiedDeclaredInput2: [ 'publicInput2', 'declaredInput2'],\n * }\n * ```\n *\n * This allows the render to re-construct the minified, public, and declared names\n * of properties.\n *\n * NOTE:\n * - Because declared and public name are usually same we only generate the array\n * `['declared', 'public']` format when they differ.\n * - The reason why this API and `outputs` API is not the same is that `NgOnChanges` has\n * inconsistent behavior in that it uses declared names rather than minified or public. For\n * this reason `NgOnChanges` will be deprecated and removed in future version and this\n * API will be simplified to be consistent with `output`.\n */\n inputs?: {[P in keyof T]?: string | [string, string]};\n\n /**\n * A map of output names.\n *\n * The format is in: `{[actualPropertyName: string]:string}`.\n *\n * Which the minifier may translate to: `{[minifiedPropertyName: string]:string}`.\n *\n * This allows the render to re-construct the minified and non-minified names\n * of properties.\n */\n outputs?: {[P in keyof T]?: string};\n\n /**\n * A list of optional features to apply.\n *\n * See: {@link NgOnChangesFeature}, {@link ProvidersFeature}, {@link InheritDefinitionFeature}\n */\n features?: DirectiveDefFeature[];\n\n /**\n * Function executed by the parent template to allow child directive to apply host bindings.\n */\n hostBindings?: HostBindingsFunction;\n\n /**\n * The number of bindings in this directive `hostBindings` (including pure fn bindings).\n *\n * Used to calculate the length of the component's LView array, so we\n * can pre-fill the array and set the host binding start index.\n */\n hostVars?: number;\n\n /**\n * Assign static attribute values to a host element.\n *\n * This property will assign static attribute values as well as class and style\n * values to a host element. Since attribute values can consist of different types of values,\n * the `hostAttrs` array must include the values in the following format:\n *\n * attrs = [\n * // static attributes (like `title`, `name`, `id`...)\n * attr1, value1, attr2, value,\n *\n * // a single namespace value (like `x:id`)\n * NAMESPACE_MARKER, namespaceUri1, name1, value1,\n *\n * // another single namespace value (like `x:name`)\n * NAMESPACE_MARKER, namespaceUri2, name2, value2,\n *\n * // a series of CSS classes that will be applied to the element (no spaces)\n * CLASSES_MARKER, class1, class2, class3,\n *\n * // a series of CSS styles (property + value) that will be applied to the element\n * STYLES_MARKER, prop1, value1, prop2, value2\n * ]\n *\n * All non-class and non-style attributes must be defined at the start of the list\n * first before all class and style values are set. When there is a change in value\n * type (like when classes and styles are introduced) a marker must be used to separate\n * the entries. The marker values themselves are set via entries found in the\n * [AttributeMarker] enum.\n */\n hostAttrs?: TAttributes;\n\n /**\n * Function to create instances of content queries associated with a given directive.\n */\n contentQueries?: ContentQueriesFunction;\n\n /**\n * Additional set of instructions specific to view query processing. This could be seen as a\n * set of instructions to be inserted into the template function.\n */\n viewQuery?: ViewQueriesFunction| null;\n\n /**\n * Defines the name that can be used in the template to assign this directive to a variable.\n *\n * See: {@link Directive.exportAs}\n */\n exportAs?: string[];\n }) => never;\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 */\nexport function ɵɵdefinePipe(pipeDef: {\n /** Name of the pipe. Used for matching pipes in template to pipe defs. */\n name: string,\n\n /** Pipe class reference. Needed to extract pipe lifecycle hooks. */\n type: Type,\n\n /** Whether the pipe is pure. */\n pure?: boolean\n}): unknown {\n return (>{\n type: pipeDef.type,\n name: pipeDef.name,\n factory: null,\n pure: pipeDef.pure !== false,\n onDestroy: pipeDef.type.prototype.ngOnDestroy || null\n });\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 */\n\nexport function getComponentDef(type: any): ComponentDef|null {\n return type[NG_COMP_DEF] || null;\n}\n\nexport function getDirectiveDef(type: any): DirectiveDef|null {\n return type[NG_DIR_DEF] || null;\n}\n\nexport function getPipeDef(type: any): PipeDef|null {\n return type[NG_PIPE_DEF] || null;\n}\n\nexport function getNgModuleDef(type: any, throwNotFound: true): NgModuleDef;\nexport function getNgModuleDef(type: any): NgModuleDef|null;\nexport function getNgModuleDef(type: any, throwNotFound?: boolean): NgModuleDef|null {\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}\n\nexport function getNgLocaleIdDef(type: any): string|null {\n return (type as any)[NG_LOC_ID_DEF] || null;\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\nimport {Injector} from '../../di/injector';\nimport {ProviderToken} from '../../di/provider_token';\nimport {Type} from '../../interface/type';\nimport {SchemaMetadata} from '../../metadata/schema';\nimport {Sanitizer} from '../../sanitization/sanitizer';\nimport {LContainer} from './container';\nimport {ComponentDef, ComponentTemplate, DirectiveDef, DirectiveDefList, HostBindingsFunction, PipeDef, PipeDefList, ViewQueriesFunction} from './definition';\nimport {I18nUpdateOpCodes, TI18n, TIcu} from './i18n';\nimport {TConstants, TNode} from './node';\nimport {PlayerHandler} from './player';\nimport {LQueries, TQueries} from './query';\nimport {Renderer3, RendererFactory3} from './renderer';\nimport {RComment, RElement} from './renderer_dom';\nimport {TStylingKey, TStylingRange} from './styling';\n\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.\nexport const HOST = 0;\nexport const TVIEW = 1;\nexport const FLAGS = 2;\nexport const PARENT = 3;\nexport const NEXT = 4;\nexport const TRANSPLANTED_VIEWS_TO_REFRESH = 5;\nexport const T_HOST = 6;\nexport const CLEANUP = 7;\nexport const CONTEXT = 8;\nexport const INJECTOR = 9;\nexport const RENDERER_FACTORY = 10;\nexport const RENDERER = 11;\nexport const SANITIZER = 12;\nexport const CHILD_HEAD = 13;\nexport const CHILD_TAIL = 14;\n// FIXME(misko): Investigate if the three declarations aren't all same thing.\nexport const DECLARATION_VIEW = 15;\nexport const DECLARATION_COMPONENT_VIEW = 16;\nexport const DECLARATION_LCONTAINER = 17;\nexport const PREORDER_HOOK_FLAGS = 18;\nexport const QUERIES = 19;\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 */\nexport const HEADER_OFFSET = 20;\n\n\n// This interface replaces the real LView interface if it is an arg or a\n// return value of a public instruction. This ensures we don't need to expose\n// the actual interface, which should be kept private.\nexport interface OpaqueViewState {\n '__brand__': 'Brand for OpaqueViewState that nothing will match';\n}\n\n\n/**\n * `LView` stores all of the information needed to process the instructions as\n * they are invoked from the template. Each embedded view and component view has its\n * own `LView`. When processing a particular view, we set the `viewData` to that\n * `LView`. When that view is done processing, the `viewData` is set back to\n * whatever the original `viewData` was before (the parent `LView`).\n *\n * Keeping separate state for each view facilities view insertion / deletion, so we\n * don't have to edit the data array based on which views are present.\n */\nexport interface LView extends Array {\n /**\n * Human readable representation of the `LView`.\n *\n * NOTE: This property only exists if `ngDevMode` is set to `true` and it is not present in\n * production. Its presence is purely to help debug issue in development, and should not be relied\n * on in production application.\n */\n debug?: LViewDebug;\n\n /**\n * The node into which this `LView` is inserted.\n */\n [HOST]: RElement|null;\n\n /**\n * The static data for this view. We need a reference to this so we can easily walk up the\n * node tree in DI and get the TView.data array associated with a node (where the\n * directive defs are stored).\n */\n readonly[TVIEW]: TView;\n\n /** Flags for this view. See LViewFlags for more info. */\n [FLAGS]: LViewFlags;\n\n /**\n * This may store an {@link LView} or {@link LContainer}.\n *\n * `LView` - The parent view. This is needed when we exit the view and must restore the previous\n * LView. Without this, the render method would have to keep a stack of\n * views as it is recursively rendering templates.\n *\n * `LContainer` - The current view is part of a container, and is an embedded view.\n */\n [PARENT]: LView|LContainer|null;\n\n /**\n *\n * The next sibling LView or LContainer.\n *\n * Allows us to propagate between sibling view states that aren't in the same\n * container. Embedded views already have a node.next, but it is only set for\n * views in the same container. We need a way to link component views and views\n * across containers as well.\n */\n [NEXT]: LView|LContainer|null;\n\n /** Queries active for this view - nodes from a view are reported to those queries. */\n [QUERIES]: LQueries|null;\n\n /**\n * Store the `TNode` of the location where the current `LView` is inserted into.\n *\n * Given:\n * ```\n *
\n * \n *
\n * ```\n *\n * We end up with two `TView`s.\n * - `parent` `TView` which contains `
`\n * - `child` `TView` which contains ``\n *\n * Typically the `child` is inserted into the declaration location of the `parent`, but it can be\n * inserted anywhere. Because it can be inserted anywhere it is not possible to store the\n * insertion information in the `TView` and instead we must store it in the `LView[T_HOST]`.\n *\n * So to determine where is our insertion parent we would execute:\n * ```\n * const parentLView = lView[PARENT];\n * const parentTNode = lView[T_HOST];\n * const insertionParent = parentLView[parentTNode.index];\n * ```\n *\n *\n * If `null`, this is the root view of an application (root component is in this view) and it has\n * no parents.\n */\n [T_HOST]: TNode|null;\n\n /**\n * When a view is destroyed, listeners need to be released and outputs need to be\n * unsubscribed. This context array stores both listener functions wrapped with\n * their context and output subscription instances for a particular view.\n *\n * These change per LView instance, so they cannot be stored on TView. Instead,\n * TView.cleanup saves an index to the necessary context in this array.\n *\n * After `LView` is created it is possible to attach additional instance specific functions at the\n * end of the `lView[CLENUP]` because we know that no more `T` level cleanup functions will be\n * addeded here.\n */\n [CLEANUP]: any[]|null;\n\n /**\n * - For dynamic views, this is the context with which to render the template (e.g.\n * `NgForContext`), or `{}` if not defined explicitly.\n * - For root view of the root component the context contains change detection data.\n * - For non-root components, the context is the component instance,\n * - For inline views, the context is null.\n */\n [CONTEXT]: {}|RootContext|null;\n\n /** An optional Module Injector to be used as fall back after Element Injectors are consulted. */\n readonly[INJECTOR]: Injector|null;\n\n /** Factory to be used for creating Renderer. */\n [RENDERER_FACTORY]: RendererFactory3;\n\n /** Renderer to be used for this view. */\n [RENDERER]: Renderer3;\n\n /** An optional custom sanitizer. */\n [SANITIZER]: Sanitizer|null;\n\n /**\n * Reference to the first LView or LContainer beneath this LView in\n * the hierarchy.\n *\n * Necessary to store this so views can traverse through their nested views\n * to remove listeners and call onDestroy callbacks.\n */\n [CHILD_HEAD]: LView|LContainer|null;\n\n /**\n * The last LView or LContainer beneath this LView in the hierarchy.\n *\n * The tail allows us to quickly add a new state to the end of the view list\n * without having to propagate starting from the first child.\n */\n [CHILD_TAIL]: LView|LContainer|null;\n\n /**\n * View where this view's template was declared.\n *\n * The template for a dynamically created view may be declared in a different view than\n * it is inserted. We already track the \"insertion view\" (view where the template was\n * inserted) in LView[PARENT], but we also need access to the \"declaration view\"\n * (view where the template was declared). Otherwise, we wouldn't be able to call the\n * view's template function with the proper contexts. Context should be inherited from\n * the declaration view tree, not the insertion view tree.\n *\n * Example (AppComponent template):\n *\n * <-- declared here -->\n * <-- inserted inside this component -->\n *\n * The above is declared in the AppComponent template, but it will be passed into\n * SomeComp and inserted there. In this case, the declaration view would be the AppComponent,\n * but the insertion view would be SomeComp. When we are removing views, we would want to\n * traverse through the insertion view to clean up listeners. When we are calling the\n * template function during change detection, we need the declaration view to get inherited\n * context.\n */\n [DECLARATION_VIEW]: LView|null;\n\n\n /**\n * Points to the declaration component view, used to track transplanted `LView`s.\n *\n * See: `DECLARATION_VIEW` which points to the actual `LView` where it was declared, whereas\n * `DECLARATION_COMPONENT_VIEW` points to the component which may not be same as\n * `DECLARATION_VIEW`.\n *\n * Example:\n * ```\n * <#VIEW #myComp>\n *
\n * ...\n *
\n * \n * ```\n * In the above case `DECLARATION_VIEW` for `myTmpl` points to the `LView` of `ngIf` whereas\n * `DECLARATION_COMPONENT_VIEW` points to `LView` of the `myComp` which owns the template.\n *\n * The reason for this is that all embedded views are always check-always whereas the component\n * view can be check-always or on-push. When we have a transplanted view it is important to\n * determine if we have transplanted a view from check-always declaration to on-push insertion\n * point. In such a case the transplanted view needs to be added to the `LContainer` in the\n * declared `LView` and CD during the declared view CD (in addition to the CD at the insertion\n * point.) (Any transplanted views which are intra Component are of no interest because the CD\n * strategy of declaration and insertion will always be the same, because it is the same\n * component.)\n *\n * Queries already track moved views in `LView[DECLARATION_LCONTAINER]` and\n * `LContainer[MOVED_VIEWS]`. However the queries also track `LView`s which moved within the same\n * component `LView`. Transplanted views are a subset of moved views, and we use\n * `DECLARATION_COMPONENT_VIEW` to differentiate them. As in this example.\n *\n * Example showing intra component `LView` movement.\n * ```\n * <#VIEW #myComp>\n *
\n * Content to render when condition is true.\n * Content to render when condition is false.\n * \n * ```\n * The `thenBlock` and `elseBlock` is moved but not transplanted.\n *\n * Example showing inter component `LView` movement (transplanted view).\n * ```\n * <#VIEW #myComp>\n * ...\n * \n * \n * ```\n * In the above example `myTmpl` is passed into a different component. If `insertion-component`\n * instantiates `myTmpl` and `insertion-component` is on-push then the `LContainer` needs to be\n * marked as containing transplanted views and those views need to be CD as part of the\n * declaration CD.\n *\n *\n * When change detection runs, it iterates over `[MOVED_VIEWS]` and CDs any child `LView`s where\n * the `DECLARATION_COMPONENT_VIEW` of the current component and the child `LView` does not match\n * (it has been transplanted across components.)\n *\n * Note: `[DECLARATION_COMPONENT_VIEW]` points to itself if the LView is a component view (the\n * simplest / most common case).\n *\n * see also:\n * - https://hackmd.io/@mhevery/rJUJsvv9H write up of the problem\n * - `LContainer[HAS_TRANSPLANTED_VIEWS]` which marks which `LContainer` has transplanted views.\n * - `LContainer[TRANSPLANT_HEAD]` and `LContainer[TRANSPLANT_TAIL]` storage for transplanted\n * - `LView[DECLARATION_LCONTAINER]` similar problem for queries\n * - `LContainer[MOVED_VIEWS]` similar problem for queries\n */\n [DECLARATION_COMPONENT_VIEW]: LView;\n\n /**\n * A declaration point of embedded views (ones instantiated based on the content of a\n * ), null for other types of views.\n *\n * We need to track all embedded views created from a given declaration point so we can prepare\n * query matches in a proper order (query matches are ordered based on their declaration point and\n * _not_ the insertion point).\n */\n [DECLARATION_LCONTAINER]: LContainer|null;\n\n /**\n * More flags for this view. See PreOrderHookFlags for more info.\n */\n [PREORDER_HOOK_FLAGS]: PreOrderHookFlags;\n\n /**\n * The number of direct transplanted views which need a refresh or have descendants themselves\n * that need a refresh but have not marked their ancestors as Dirty. This tells us that during\n * change detection we should still descend to find those children to refresh, even if the parents\n * are not `Dirty`/`CheckAlways`.\n */\n [TRANSPLANTED_VIEWS_TO_REFRESH]: number;\n}\n\n/** Flags associated with an LView (saved in LView[FLAGS]) */\nexport const enum LViewFlags {\n /** The state of the init phase on the first 2 bits */\n InitPhaseStateIncrementer = 0b00000000001,\n InitPhaseStateMask = 0b00000000011,\n\n /**\n * Whether or not the view is in creationMode.\n *\n * This must be stored in the view rather than using `data` as a marker so that\n * we can properly support embedded views. Otherwise, when exiting a child view\n * back into the parent view, `data` will be defined and `creationMode` will be\n * improperly reported as false.\n */\n CreationMode = 0b00000000100,\n\n /**\n * Whether or not this LView instance is on its first processing pass.\n *\n * An LView instance is considered to be on its \"first pass\" until it\n * has completed one creation mode run and one update mode run. At this\n * time, the flag is turned off.\n */\n FirstLViewPass = 0b00000001000,\n\n /** Whether this view has default change detection strategy (checks always) or onPush */\n CheckAlways = 0b00000010000,\n\n /**\n * Whether or not manual change detection is turned on for onPush components.\n *\n * This is a special mode that only marks components dirty in two cases:\n * 1) There has been a change to an @Input property\n * 2) `markDirty()` has been called manually by the user\n *\n * Note that in this mode, the firing of events does NOT mark components\n * dirty automatically.\n *\n * Manual mode is turned off by default for backwards compatibility, as events\n * automatically mark OnPush components dirty in View Engine.\n *\n * TODO: Add a public API to ChangeDetectionStrategy to turn this mode on\n */\n ManualOnPush = 0b00000100000,\n\n /** Whether or not this view is currently dirty (needing check) */\n Dirty = 0b000001000000,\n\n /** Whether or not this view is currently attached to change detection tree. */\n Attached = 0b000010000000,\n\n /** Whether or not this view is destroyed. */\n Destroyed = 0b000100000000,\n\n /** Whether or not this view is the root view */\n IsRoot = 0b001000000000,\n\n /**\n * Whether this moved LView was needs to be refreshed at the insertion location because the\n * declaration was dirty.\n */\n RefreshTransplantedView = 0b0010000000000,\n\n /**\n * Index of the current init phase on last 21 bits\n */\n IndexWithinInitPhaseIncrementer = 0b0100000000000,\n IndexWithinInitPhaseShift = 11,\n IndexWithinInitPhaseReset = 0b0011111111111,\n}\n\n/**\n * Possible states of the init phase:\n * - 00: OnInit hooks to be run.\n * - 01: AfterContentInit hooks to be run\n * - 10: AfterViewInit hooks to be run\n * - 11: All init hooks have been run\n */\nexport const enum InitPhaseState {\n OnInitHooksToBeRun = 0b00,\n AfterContentInitHooksToBeRun = 0b01,\n AfterViewInitHooksToBeRun = 0b10,\n InitPhaseCompleted = 0b11,\n}\n\n/** More flags associated with an LView (saved in LView[PREORDER_HOOK_FLAGS]) */\nexport const enum PreOrderHookFlags {\n /**\n The index of the next pre-order hook to be called in the hooks array, on the first 16\n bits\n */\n IndexOfTheNextPreOrderHookMaskMask = 0b01111111111111111,\n\n /**\n * The number of init hooks that have already been called, on the last 16 bits\n */\n NumberOfInitHooksCalledIncrementer = 0b010000000000000000,\n NumberOfInitHooksCalledShift = 16,\n NumberOfInitHooksCalledMask = 0b11111111111111110000000000000000,\n}\n\n/**\n * Stores a set of OpCodes to process `HostBindingsFunction` associated with a current view.\n *\n * In order to invoke `HostBindingsFunction` we need:\n * 1. 'elementIdx`: Index to the element associated with the `HostBindingsFunction`.\n * 2. 'directiveIdx`: Index to the directive associated with the `HostBindingsFunction`. (This will\n * become the context for the `HostBindingsFunction` invocation.)\n * 3. `bindingRootIdx`: Location where the bindings for the `HostBindingsFunction` start. Internally\n * `HostBindingsFunction` binding indexes start from `0` so we need to add `bindingRootIdx` to\n * it.\n * 4. `HostBindingsFunction`: A host binding function to execute.\n *\n * The above information needs to be encoded into the `HostBindingOpCodes` in an efficient manner.\n *\n * 1. `elementIdx` is encoded into the `HostBindingOpCodes` as `~elementIdx` (so a negative number);\n * 2. `directiveIdx`\n * 3. `bindingRootIdx`\n * 4. `HostBindingsFunction` is passed in as is.\n *\n * The `HostBindingOpCodes` array contains:\n * - negative number to select the element index.\n * - followed by 1 or more of:\n * - a number to select the directive index\n * - a number to select the bindingRoot index\n * - and a function to invoke.\n *\n * ## Example\n *\n * ```\n * const hostBindingOpCodes = [\n * ~30, // Select element 30\n * 40, 45, MyDir.ɵdir.hostBindings // Invoke host bindings on MyDir on element 30;\n * // directiveIdx = 40; bindingRootIdx = 45;\n * 50, 55, OtherDir.ɵdir.hostBindings // Invoke host bindings on OtherDire on element 30\n * // directiveIdx = 50; bindingRootIdx = 55;\n * ]\n * ```\n *\n * ## Pseudocode\n * ```\n * const hostBindingOpCodes = tView.hostBindingOpCodes;\n * if (hostBindingOpCodes === null) return;\n * for (let i = 0; i < hostBindingOpCodes.length; i++) {\n * const opCode = hostBindingOpCodes[i] as number;\n * if (opCode < 0) {\n * // Negative numbers are element indexes.\n * setSelectedIndex(~opCode);\n * } else {\n * // Positive numbers are NumberTuple which store bindingRootIndex and directiveIndex.\n * const directiveIdx = opCode;\n * const bindingRootIndx = hostBindingOpCodes[++i] as number;\n * const hostBindingFn = hostBindingOpCodes[++i] as HostBindingsFunction;\n * setBindingRootForHostBindings(bindingRootIndx, directiveIdx);\n * const context = lView[directiveIdx];\n * hostBindingFn(RenderFlags.Update, context);\n * }\n * }\n * ```\n *\n */\nexport interface HostBindingOpCodes extends Array> {\n __brand__: 'HostBindingOpCodes';\n debug?: string[];\n}\n\n/**\n * Explicitly marks `TView` as a specific type in `ngDevMode`\n *\n * It is useful to know conceptually what time of `TView` we are dealing with when\n * debugging an application (even if the runtime does not need it.) For this reason\n * we store this information in the `ngDevMode` `TView` and than use it for\n * better debugging experience.\n */\nexport const enum TViewType {\n /**\n * Root `TView` is the used to bootstrap components into. It is used in conjunction with\n * `LView` which takes an existing DOM node not owned by Angular and wraps it in `TView`/`LView`\n * so that other components can be loaded into it.\n */\n Root = 0,\n\n /**\n * `TView` associated with a Component. This would be the `TView` directly associated with the\n * component view (as opposed an `Embedded` `TView` which would be a child of `Component` `TView`)\n */\n Component = 1,\n\n /**\n * `TView` associated with a template. Such as `*ngIf`, `` etc... A `Component`\n * can have zero or more `Embedede` `TView`s.\n */\n Embedded = 2,\n}\n\n/**\n * Converts `TViewType` into human readable text.\n * Make sure this matches with `TViewType`\n */\nexport const TViewTypeAsString = [\n 'Root', // 0\n 'Component', // 1\n 'Embedded', // 2\n] as const;\n\n\n/**\n * The static data for an LView (shared between all templates of a\n * given type).\n *\n * Stored on the `ComponentDef.tView`.\n */\nexport interface TView {\n /**\n * Type of `TView` (`Root`|`Component`|`Embedded`).\n */\n type: TViewType;\n\n /**\n * This is a blueprint used to generate LView instances for this TView. Copying this\n * blueprint is faster than creating a new LView from scratch.\n */\n blueprint: LView;\n\n /**\n * The template function used to refresh the view of dynamically created views\n * and components. Will be null for inline views.\n */\n template: ComponentTemplate<{}>|null;\n\n /**\n * A function containing query-related instructions.\n */\n viewQuery: ViewQueriesFunction<{}>|null;\n\n /**\n * A `TNode` representing the declaration location of this `TView` (not part of this TView).\n */\n declTNode: TNode|null;\n\n // FIXME(misko): Why does `TView` not have `declarationTView` property?\n\n /** Whether or not this template has been processed in creation mode. */\n firstCreatePass: boolean;\n\n /**\n * Whether or not this template has been processed in update mode (e.g. change detected)\n *\n * `firstUpdatePass` is used by styling to set up `TData` to contain metadata about the styling\n * instructions. (Mainly to build up a linked list of styling priority order.)\n *\n * Typically this function gets cleared after first execution. If exception is thrown then this\n * flag can remain turned un until there is first successful (no exception) pass. This means that\n * individual styling instructions keep track of if they have already been added to the linked\n * list to prevent double adding.\n */\n firstUpdatePass: boolean;\n\n /** Static data equivalent of LView.data[]. Contains TNodes, PipeDefInternal or TI18n. */\n data: TData;\n\n /**\n * The binding start index is the index at which the data array\n * starts to store bindings only. Saving this value ensures that we\n * will begin reading bindings at the correct point in the array when\n * we are in update mode.\n *\n * -1 means that it has not been initialized.\n */\n bindingStartIndex: number;\n\n /**\n * The index where the \"expando\" section of `LView` begins. The expando\n * section contains injectors, directive instances, and host binding values.\n * Unlike the \"decls\" and \"vars\" sections of `LView`, the length of this\n * section cannot be calculated at compile-time because directives are matched\n * at runtime to preserve locality.\n *\n * We store this start index so we know where to start checking host bindings\n * in `setHostBindings`.\n */\n expandoStartIndex: number;\n\n /**\n * Whether or not there are any static view queries tracked on this view.\n *\n * We store this so we know whether or not we should do a view query\n * refresh after creation mode to collect static query results.\n */\n staticViewQueries: boolean;\n\n /**\n * Whether or not there are any static content queries tracked on this view.\n *\n * We store this so we know whether or not we should do a content query\n * refresh after creation mode to collect static query results.\n */\n staticContentQueries: boolean;\n\n /**\n * A reference to the first child node located in the view.\n */\n firstChild: TNode|null;\n\n /**\n * Stores the OpCodes to be replayed during change-detection to process the `HostBindings`\n *\n * See `HostBindingOpCodes` for encoding details.\n */\n hostBindingOpCodes: HostBindingOpCodes|null;\n\n /**\n * Full registry of directives and components that may be found in this view.\n *\n * It's necessary to keep a copy of the full def list on the TView so it's possible\n * to render template functions without a host component.\n */\n directiveRegistry: DirectiveDefList|null;\n\n /**\n * Full registry of pipes that may be found in this view.\n *\n * The property is either an array of `PipeDefs`s or a function which returns the array of\n * `PipeDefs`s. The function is necessary to be able to support forward declarations.\n *\n * It's necessary to keep a copy of the full def list on the TView so it's possible\n * to render template functions without a host component.\n */\n pipeRegistry: PipeDefList|null;\n\n /**\n * Array of ngOnInit, ngOnChanges and ngDoCheck hooks that should be executed for this view in\n * creation mode.\n *\n * This array has a flat structure and contains TNode indices, directive indices (where an\n * instance can be found in `LView`) and hook functions. TNode index is followed by the directive\n * index and a hook function. If there are multiple hooks for a given TNode, the TNode index is\n * not repeated and the next lifecycle hook information is stored right after the previous hook\n * function. This is done so that at runtime the system can efficiently iterate over all of the\n * functions to invoke without having to make any decisions/lookups.\n */\n preOrderHooks: HookData|null;\n\n /**\n * Array of ngOnChanges and ngDoCheck hooks that should be executed for this view in update mode.\n *\n * This array has the same structure as the `preOrderHooks` one.\n */\n preOrderCheckHooks: HookData|null;\n\n /**\n * Array of ngAfterContentInit and ngAfterContentChecked hooks that should be executed\n * for this view in creation mode.\n *\n * Even indices: Directive index\n * Odd indices: Hook function\n */\n contentHooks: HookData|null;\n\n /**\n * Array of ngAfterContentChecked hooks that should be executed for this view in update\n * mode.\n *\n * Even indices: Directive index\n * Odd indices: Hook function\n */\n contentCheckHooks: HookData|null;\n\n /**\n * Array of ngAfterViewInit and ngAfterViewChecked hooks that should be executed for\n * this view in creation mode.\n *\n * Even indices: Directive index\n * Odd indices: Hook function\n */\n viewHooks: HookData|null;\n\n /**\n * Array of ngAfterViewChecked hooks that should be executed for this view in\n * update mode.\n *\n * Even indices: Directive index\n * Odd indices: Hook function\n */\n viewCheckHooks: HookData|null;\n\n /**\n * Array of ngOnDestroy hooks that should be executed when this view is destroyed.\n *\n * Even indices: Directive index\n * Odd indices: Hook function\n */\n destroyHooks: DestroyHookData|null;\n\n /**\n * When a view is destroyed, listeners need to be released and outputs need to be\n * unsubscribed. This cleanup array stores both listener data (in chunks of 4)\n * and output data (in chunks of 2) for a particular view. Combining the arrays\n * saves on memory (70 bytes per array) and on a few bytes of code size (for two\n * separate for loops).\n *\n * If it's a native DOM listener or output subscription being stored:\n * 1st index is: event name `name = tView.cleanup[i+0]`\n * 2nd index is: index of native element or a function that retrieves global target (window,\n * document or body) reference based on the native element:\n * `typeof idxOrTargetGetter === 'function'`: global target getter function\n * `typeof idxOrTargetGetter === 'number'`: index of native element\n *\n * 3rd index is: index of listener function `listener = lView[CLEANUP][tView.cleanup[i+2]]`\n * 4th index is: `useCaptureOrIndx = tView.cleanup[i+3]`\n * `typeof useCaptureOrIndx == 'boolean' : useCapture boolean\n * `typeof useCaptureOrIndx == 'number':\n * `useCaptureOrIndx >= 0` `removeListener = LView[CLEANUP][useCaptureOrIndx]`\n * `useCaptureOrIndx < 0` `subscription = LView[CLEANUP][-useCaptureOrIndx]`\n *\n * If it's an output subscription or query list destroy hook:\n * 1st index is: output unsubscribe function / query list destroy function\n * 2nd index is: index of function context in LView.cleanupInstances[]\n * `tView.cleanup[i+0].call(lView[CLEANUP][tView.cleanup[i+1]])`\n */\n cleanup: any[]|null;\n\n /**\n * A list of element indices for child components that will need to be\n * refreshed when the current view has finished its check. These indices have\n * already been adjusted for the HEADER_OFFSET.\n *\n */\n components: number[]|null;\n\n /**\n * A collection of queries tracked in a given view.\n */\n queries: TQueries|null;\n\n /**\n * An array of indices pointing to directives with content queries alongside with the\n * corresponding query index. Each entry in this array is a tuple of:\n * - index of the first content query index declared by a given directive;\n * - index of a directive.\n *\n * We are storing those indexes so we can refresh content queries as part of a view refresh\n * process.\n */\n contentQueries: number[]|null;\n\n /**\n * Set of schemas that declare elements to be allowed inside the view.\n */\n schemas: SchemaMetadata[]|null;\n\n /**\n * Array of constants for the view. Includes attribute arrays, local definition arrays etc.\n * Used for directive matching, attribute bindings, local definitions and more.\n */\n consts: TConstants|null;\n\n /**\n * Indicates that there was an error before we managed to complete the first create pass of the\n * view. This means that the view is likely corrupted and we should try to recover it.\n */\n incompleteFirstPass: boolean;\n}\n\nexport const enum RootContextFlags {\n Empty = 0b00,\n DetectChanges = 0b01,\n FlushPlayers = 0b10\n}\n\n\n/**\n * RootContext contains information which is shared for all components which\n * were bootstrapped with {@link renderComponent}.\n */\nexport interface RootContext {\n /**\n * A function used for scheduling change detection in the future. Usually\n * this is `requestAnimationFrame`.\n */\n scheduler: (workFn: () => void) => void;\n\n /**\n * A promise which is resolved when all components are considered clean (not dirty).\n *\n * This promise is overwritten every time a first call to {@link markDirty} is invoked.\n */\n clean: Promise;\n\n /**\n * RootComponents - The components that were instantiated by the call to\n * {@link renderComponent}.\n */\n components: {}[];\n\n /**\n * The player flushing handler to kick off all animations\n */\n playerHandler: PlayerHandler|null;\n\n /**\n * What render-related operations to run once a scheduler has been set\n */\n flags: RootContextFlags;\n}\n\n/** Single hook callback function. */\nexport type HookFn = () => void;\n\n/**\n * Information necessary to call a hook. E.g. the callback that\n * needs to invoked and the index at which to find its context.\n */\nexport type HookEntry = number|HookFn;\n\n/**\n * Array of hooks that should be executed for a view and their directive indices.\n *\n * For each node of the view, the following data is stored:\n * 1) Node index (optional)\n * 2) A series of number/function pairs where:\n * - even indices are directive indices\n * - odd indices are hook functions\n *\n * Special cases:\n * - a negative directive index flags an init hook (ngOnInit, ngAfterContentInit, ngAfterViewInit)\n */\nexport type HookData = HookEntry[];\n\n/**\n * Array of destroy hooks that should be executed for a view and their directive indices.\n *\n * The array is set up as a series of number/function or number/(number|function)[]:\n * - Even indices represent the context with which hooks should be called.\n * - Odd indices are the hook functions themselves. If a value at an odd index is an array,\n * it represents the destroy hooks of a `multi` provider where:\n * - Even indices represent the index of the provider for which we've registered a destroy hook,\n * inside of the `multi` provider array.\n * - Odd indices are the destroy hook functions.\n * For example:\n * LView: `[0, 1, 2, AService, 4, [BService, CService, DService]]`\n * destroyHooks: `[3, AService.ngOnDestroy, 5, [0, BService.ngOnDestroy, 2, DService.ngOnDestroy]]`\n *\n * In the example above `AService` is a type provider with an `ngOnDestroy`, whereas `BService`,\n * `CService` and `DService` are part of a `multi` provider where only `BService` and `DService`\n * have an `ngOnDestroy` hook.\n */\nexport type DestroyHookData = (HookEntry|HookData)[];\n\n/**\n * Static data that corresponds to the instance-specific data array on an LView.\n *\n * Each node's static data is stored in tData at the same index that it's stored\n * in the data array. Any nodes that do not have static data store a null value in\n * tData to avoid a sparse array.\n *\n * Each pipe's definition is stored here at the same index as its pipe instance in\n * the data array.\n *\n * Each host property's name is stored here at the same index as its value in the\n * data array.\n *\n * Each property binding name is stored here at the same index as its value in\n * the data array. If the binding is an interpolation, the static string values\n * are stored parallel to the dynamic values. Example:\n *\n * id=\"prefix {{ v0 }} a {{ v1 }} b {{ v2 }} suffix\"\n *\n * LView | TView.data\n *------------------------\n * v0 value | 'a'\n * v1 value | 'b'\n * v2 value | id � prefix � suffix\n *\n * Injector bloom filters are also stored here.\n */\nexport type TData = (TNode|PipeDef|DirectiveDef|ComponentDef|number|TStylingRange|\n TStylingKey|ProviderToken|TI18n|I18nUpdateOpCodes|TIcu|null|string)[];\n\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\nexport const unusedValueExportToPlacateAjd = 1;\n\n/**\n * Human readable version of the `LView`.\n *\n * `LView` is a data structure used internally to keep track of views. The `LView` is designed for\n * efficiency and so at times it is difficult to read or write tests which assert on its values. For\n * this reason when `ngDevMode` is true we patch a `LView.debug` property which points to\n * `LViewDebug` for easier debugging and test writing. It is the intent of `LViewDebug` to be used\n * in tests.\n */\nexport interface LViewDebug {\n /**\n * Flags associated with the `LView` unpacked into a more readable state.\n *\n * See `LViewFlags` for the flag meanings.\n */\n readonly flags: {\n initPhaseState: number,\n creationMode: boolean,\n firstViewPass: boolean,\n checkAlways: boolean,\n dirty: boolean,\n attached: boolean,\n destroyed: boolean,\n isRoot: boolean,\n indexWithinInitPhase: number,\n };\n\n /**\n * Associated TView\n */\n readonly tView: TView;\n\n /**\n * Parent view (or container)\n */\n readonly parent: LViewDebug|LContainerDebug|null;\n\n /**\n * Next sibling to the `LView`.\n */\n readonly next: LViewDebug|LContainerDebug|null;\n\n /**\n * The context used for evaluation of the `LView`\n *\n * (Usually the component)\n */\n readonly context: {}|null;\n\n /**\n * Hierarchical tree of nodes.\n */\n readonly nodes: DebugNode[];\n\n /**\n * Template structure (no instance data).\n * (Shows how TNodes are connected)\n */\n readonly template: string;\n\n /**\n * HTML representation of the `LView`.\n *\n * This is only approximate to actual HTML as child `LView`s are removed.\n */\n readonly html: string;\n\n /**\n * The host element to which this `LView` is attached.\n */\n readonly hostHTML: string|null;\n\n /**\n * Child `LView`s\n */\n readonly childViews: Array;\n\n /**\n * Sub range of `LView` containing decls (DOM elements).\n */\n readonly decls: LViewDebugRange;\n\n /**\n * Sub range of `LView` containing vars (bindings).\n */\n readonly vars: LViewDebugRange;\n\n /**\n * Sub range of `LView` containing expando (used by DI).\n */\n readonly expando: LViewDebugRange;\n}\n\n/**\n * Human readable version of the `LContainer`\n *\n * `LContainer` is a data structure used internally to keep track of child views. The `LContainer`\n * is designed for efficiency and so at times it is difficult to read or write tests which assert on\n * its values. For this reason when `ngDevMode` is true we patch a `LContainer.debug` property which\n * points to `LContainerDebug` for easier debugging and test writing. It is the intent of\n * `LContainerDebug` to be used in tests.\n */\nexport interface LContainerDebug {\n readonly native: RComment;\n /**\n * Child `LView`s.\n */\n readonly views: LViewDebug[];\n readonly parent: LViewDebug|null;\n readonly movedViews: LView[]|null;\n readonly host: RElement|RComment|LView;\n readonly next: LViewDebug|LContainerDebug|null;\n readonly hasTransplantedViews: boolean;\n}\n\n\n\n/**\n * `LView` is subdivided to ranges where the actual data is stored. Some of these ranges such as\n * `decls` and `vars` are known at compile time. Other such as `i18n` and `expando` are runtime only\n * concepts.\n */\nexport interface LViewDebugRange {\n /**\n * The starting index in `LView` where the range begins. (Inclusive)\n */\n start: number;\n\n /**\n * The ending index in `LView` where the range ends. (Exclusive)\n */\n end: number;\n\n /**\n * The length of the range\n */\n length: number;\n\n /**\n * The merged content of the range. `t` contains data from `TView.data` and `l` contains `LView`\n * data at an index.\n */\n content: LViewDebugRangeContent[];\n}\n\n/**\n * For convenience the static and instance portions of `TView` and `LView` are merged into a single\n * object in `LViewRange`.\n */\nexport interface LViewDebugRangeContent {\n /**\n * Index into original `LView` or `TView.data`.\n */\n index: number;\n\n /**\n * Value from the `TView.data[index]` location.\n */\n t: any;\n\n /**\n * Value from the `LView[index]` location.\n */\n l: any;\n}\n\n\n/**\n * A logical node which comprise into `LView`s.\n *\n */\nexport interface DebugNode {\n /**\n * HTML representation of the node.\n */\n html: string|null;\n\n /**\n * Associated `TNode`\n */\n tNode: TNode;\n\n /**\n * Human readable node type.\n */\n type: string;\n\n /**\n * DOM native node.\n */\n native: Node;\n\n /**\n * Child nodes\n */\n children: DebugNode[];\n\n /**\n * A list of Component/Directive types which need to be instantiated an this location.\n */\n factories: Type[];\n\n /**\n * A list of Component/Directive instances which were instantiated an this location.\n */\n instances: unknown[];\n\n /**\n * NodeInjector information.\n */\n injector: NodeInjectorDebug;\n\n /**\n * Injector resolution path.\n */\n injectorResolutionPath: any;\n}\n\nexport interface NodeInjectorDebug {\n /**\n * Instance bloom. Does the current injector have a provider with a given bloom mask.\n */\n bloom: string;\n\n\n /**\n * Cumulative bloom. Do any of the above injectors have a provider with a given bloom mask.\n */\n cumulativeBloom: string;\n\n /**\n * A list of providers associated with this injector.\n */\n providers: (Type|DirectiveDef|ComponentDef)[];\n\n /**\n * A list of providers associated with this injector visible to the view of the component only.\n */\n viewProviders: Type[];\n\n\n /**\n * Location of the parent `TNode`.\n */\n parentInjectorIndex: number;\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\nimport {TNode} from './node';\nimport {RComment, RElement} from './renderer_dom';\nimport {HOST, LView, NEXT, PARENT, T_HOST, TRANSPLANTED_VIEWS_TO_REFRESH} from './view';\n\n\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 */\nexport const TYPE = 1;\n\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/**\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 */\nexport const HAS_TRANSPLANTED_VIEWS = 2;\n\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\n// T_HOST is index 6\n// We already have this constants in LView, we don't need to re-create it.\n\nexport const NATIVE = 7;\nexport const VIEW_REFS = 8;\nexport const MOVED_VIEWS = 9;\n\n\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 */\nexport const CONTAINER_HEADER_OFFSET = 10;\n\n/**\n * The state associated with a container.\n *\n * This is an array so that its structure is closer to LView. This helps\n * when traversing the view tree (which is a mix of containers and component\n * views), so we can jump to viewOrContainer[NEXT] in the same way regardless\n * of type.\n */\nexport interface LContainer extends Array {\n /**\n * The host element of this LContainer.\n *\n * The host could be an LView if this container is on a component node.\n * In that case, the component LView is its HOST.\n */\n readonly[HOST]: RElement|RComment|LView;\n\n /**\n * This is a type field which allows us to differentiate `LContainer` from `StylingContext` in an\n * efficient way. The value is always set to `true`\n */\n [TYPE]: true;\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`.\n */\n [HAS_TRANSPLANTED_VIEWS]: boolean;\n\n /**\n * Access to the parent view is necessary so we can propagate back\n * up from inside a container to parent[NEXT].\n */\n [PARENT]: LView;\n\n /**\n * This allows us to jump from a container to a sibling container or component\n * view with the same parent, so we can remove listeners efficiently.\n */\n [NEXT]: LView|LContainer|null;\n\n /**\n * The number of direct transplanted views which need a refresh or have descendants themselves\n * that need a refresh but have not marked their ancestors as Dirty. This tells us that during\n * change detection we should still descend to find those children to refresh, even if the parents\n * are not `Dirty`/`CheckAlways`.\n */\n [TRANSPLANTED_VIEWS_TO_REFRESH]: number;\n\n /**\n * A collection of views created based on the underlying `` element but inserted into\n * a different `LContainer`. We need to track views created from a given declaration point since\n * queries collect matches from the embedded view declaration point and _not_ the insertion point.\n */\n [MOVED_VIEWS]: LView[]|null;\n\n /**\n * Pointer to the `TNode` which represents the host of the container.\n */\n [T_HOST]: TNode;\n\n /** The comment element that serves as an anchor for this LContainer. */\n readonly[NATIVE]:\n RComment; // TODO(misko): remove as this value can be gotten by unwrapping `[HOST]`\n\n /**\n * Array of `ViewRef`s used by any `ViewContainerRef`s that point to this container.\n *\n * This is lazily initialized by `ViewContainerRef` when the first view is inserted.\n *\n * NOTE: This is stored as `any[]` because render3 should really not be aware of `ViewRef` and\n * doing so creates circular dependency.\n */\n [VIEW_REFS]: unknown[]|null;\n}\n\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\nexport const unusedValueExportToPlacateAjd = 1;\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\nimport {LContainer, TYPE} from './container';\nimport {ComponentDef, DirectiveDef} from './definition';\nimport {TNode, TNodeFlags} from './node';\nimport {RNode} from './renderer_dom';\nimport {FLAGS, LView, LViewFlags} from './view';\n\n\n/**\n * True if `value` is `LView`.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nexport function isLView(value: RNode|LView|LContainer|{}|null): value is LView {\n return Array.isArray(value) && typeof value[TYPE] === 'object';\n}\n\n/**\n * True if `value` is `LContainer`.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nexport function isLContainer(value: RNode|LView|LContainer|{}|null): value is LContainer {\n return Array.isArray(value) && value[TYPE] === true;\n}\n\nexport function isContentQueryHost(tNode: TNode): boolean {\n return (tNode.flags & TNodeFlags.hasContentQuery) !== 0;\n}\n\nexport function isComponentHost(tNode: TNode): boolean {\n return (tNode.flags & TNodeFlags.isComponentHost) === TNodeFlags.isComponentHost;\n}\n\nexport function isDirectiveHost(tNode: TNode): boolean {\n return (tNode.flags & TNodeFlags.isDirectiveHost) === TNodeFlags.isDirectiveHost;\n}\n\nexport function isComponentDef(def: DirectiveDef): def is ComponentDef {\n return (def as ComponentDef).template !== null;\n}\n\nexport function isRootView(target: LView): boolean {\n return (target[FLAGS] & LViewFlags.IsRoot) !== 0;\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\nimport {assertDefined, assertEqual, assertNumber, throwError} from '../util/assert';\n\nimport {getComponentDef, getNgModuleDef} from './definition';\nimport {LContainer} from './interfaces/container';\nimport {DirectiveDef} from './interfaces/definition';\nimport {TIcu} from './interfaces/i18n';\nimport {NodeInjectorOffset} from './interfaces/injector';\nimport {TNode} from './interfaces/node';\nimport {isLContainer, isLView} from './interfaces/type_checks';\nimport {DECLARATION_COMPONENT_VIEW, HEADER_OFFSET, LView, T_HOST, TVIEW, TView} from './interfaces/view';\n\n// [Assert functions do not constraint type when they are guarded by a truthy\n// expression.](https://github.com/microsoft/TypeScript/issues/37295)\n\n\nexport function assertTNodeForLView(tNode: TNode, lView: LView) {\n assertTNodeForTView(tNode, lView[TVIEW]);\n}\n\nexport function assertTNodeForTView(tNode: TNode, tView: TView) {\n assertTNode(tNode);\n tNode.hasOwnProperty('tView_') &&\n assertEqual(\n (tNode as any as {tView_: TView}).tView_, tView,\n 'This TNode does not belong to this TView.');\n}\n\nexport function assertTNode(tNode: 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}\n\n\nexport function assertTIcu(tIcu: 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}\n\nexport function assertComponentType(\n actual: any,\n msg: string = 'Type passed in is not ComponentType, it does not have \\'ɵcmp\\' property.') {\n if (!getComponentDef(actual)) {\n throwError(msg);\n }\n}\n\nexport function assertNgModuleType(\n actual: any,\n msg: string = 'Type passed in is not NgModuleType, it does not have \\'ɵmod\\' property.') {\n if (!getNgModuleDef(actual)) {\n throwError(msg);\n }\n}\n\nexport function assertCurrentTNodeIsParent(isParent: boolean) {\n assertEqual(isParent, true, 'currentTNode should be a parent');\n}\n\nexport function assertHasParent(tNode: TNode|null) {\n assertDefined(tNode, 'currentTNode should exist!');\n assertDefined(tNode!.parent, 'currentTNode should have a parent');\n}\n\nexport function assertDataNext(lView: LView, index: number, arr?: any[]) {\n if (arr == null) arr = lView;\n assertEqual(\n arr.length, index, `index ${index} expected to be at the end of arr (length ${arr.length})`);\n}\n\nexport function assertLContainer(value: any): asserts value is LContainer {\n assertDefined(value, 'LContainer must be defined');\n assertEqual(isLContainer(value), true, 'Expecting LContainer');\n}\n\nexport function assertLViewOrUndefined(value: any): asserts value is LView|null|undefined {\n value && assertEqual(isLView(value), true, 'Expecting LView or undefined or null');\n}\n\nexport function assertLView(value: any): asserts value is LView {\n assertDefined(value, 'LView must be defined');\n assertEqual(isLView(value), true, 'Expecting LView');\n}\n\nexport function assertFirstCreatePass(tView: TView, errMessage?: string) {\n assertEqual(\n tView.firstCreatePass, true, errMessage || 'Should only be called in first create pass.');\n}\n\nexport function assertFirstUpdatePass(tView: TView, errMessage?: string) {\n assertEqual(\n tView.firstUpdatePass, true, errMessage || 'Should only be called in first update pass.');\n}\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 */\nexport function assertDirectiveDef(obj: any): asserts obj is DirectiveDef {\n if (obj.type === undefined || obj.selectors == undefined || obj.inputs === undefined) {\n throwError(\n `Expected a DirectiveDef/ComponentDef and this object does not seem to have the expected shape.`);\n }\n}\n\nexport function assertIndexInDeclRange(lView: LView, index: number) {\n const tView = lView[1];\n assertBetween(HEADER_OFFSET, tView.bindingStartIndex, index);\n}\n\nexport function assertIndexInVarsRange(lView: LView, index: number) {\n const tView = lView[1];\n assertBetween(tView.bindingStartIndex, tView.expandoStartIndex, index);\n}\n\nexport function assertIndexInExpandoRange(lView: LView, index: number) {\n const tView = lView[1];\n assertBetween(tView.expandoStartIndex, lView.length, index);\n}\n\nexport function assertBetween(lower: number, upper: number, index: number) {\n if (!(lower <= index && index < upper)) {\n throwError(`Index out of range (expecting ${lower} <= ${index} < ${upper})`);\n }\n}\n\nexport function assertProjectionSlots(lView: LView, errMessage?: string) {\n assertDefined(lView[DECLARATION_COMPONENT_VIEW], 'Component views should exist.');\n assertDefined(\n lView[DECLARATION_COMPONENT_VIEW][T_HOST]!.projection,\n errMessage ||\n 'Components with projection nodes () must have projection slots defined.');\n}\n\nexport function assertParentView(lView: LView|null, errMessage?: string) {\n assertDefined(\n lView,\n errMessage || 'Component views should always have a parent view (component\\'s host view)');\n}\n\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 */\nexport function assertNodeInjector(lView: LView, injectorIndex: number) {\n assertIndexInExpandoRange(lView, injectorIndex);\n assertIndexInExpandoRange(lView, injectorIndex + 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(\n lView[injectorIndex + NodeInjectorOffset.PARENT],\n 'injectorIndex should point to parent injector');\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\nimport {Type} from '../interface/type';\nimport {stringify} from '../util/stringify';\nimport {NG_FACTORY_DEF} from './fields';\n\n\n/**\n * Definition of what a factory function should look like.\n */\nexport type FactoryFn = {\n /**\n * Subclasses without an explicit constructor call through to the factory of their base\n * definition, providing it with their own constructor to instantiate.\n */\n (t?: Type): U;\n\n /**\n * If no constructor to instantiate is provided, an instance of type T itself is created.\n */\n (t?: undefined): T;\n};\n\n\nexport function getFactoryDef(type: any, throwNotFound: true): FactoryFn;\nexport function getFactoryDef(type: any): FactoryFn|null;\nexport function getFactoryDef(type: any, throwNotFound?: boolean): FactoryFn|null {\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 * @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 * 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 */\nexport class SimpleChange {\n constructor(public previousValue: any, public currentValue: any, public firstChange: boolean) {}\n /**\n * Check whether the new value is the first value assigned.\n */\n isFirstChange(): boolean {\n return this.firstChange;\n }\n}\n\n/**\n * A hashtable of changes represented by {@link SimpleChange} objects stored\n * at the declared property name they belong to on a Directive or Component. This is\n * the type passed to the `ngOnChanges` hook.\n *\n * @see `OnChanges`\n *\n * @publicApi\n */\nexport interface SimpleChanges {\n [propName: string]: SimpleChange;\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\nimport {OnChanges} from '../../interface/lifecycle_hooks';\nimport {SimpleChange, SimpleChanges} from '../../interface/simple_change';\nimport {EMPTY_OBJ} from '../../util/empty';\nimport {DirectiveDef, DirectiveDefFeature} from '../interfaces/definition';\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 */\nexport function ɵɵNgOnChangesFeature(): DirectiveDefFeature {\n return NgOnChangesFeatureImpl;\n}\n\nexport function NgOnChangesFeatureImpl(definition: DirectiveDef) {\n if (definition.type.prototype.ngOnChanges) {\n definition.setInput = ngOnChangesSetInput;\n }\n return rememberChangeHistoryAndInvokeOnChangesHook;\n}\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\n(ɵɵNgOnChangesFeature as DirectiveDefFeature).ngInherit = true;\n\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(this: OnChanges) {\n const simpleChangesStore = getSimpleChangesStore(this);\n const current = simpleChangesStore?.current;\n\n if (current) {\n const previous = simpleChangesStore!.previous;\n if (previous === EMPTY_OBJ) {\n simpleChangesStore!.previous = current;\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}\n\n\nfunction ngOnChangesSetInput(\n this: DirectiveDef, instance: T, value: any, publicName: string, privateName: string): void {\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\n const declaredName = (this.declaredInputs as {[key: string]: string})[publicName];\n const previousChange = previous[declaredName];\n current[declaredName] = new SimpleChange(\n previousChange && previousChange.currentValue, value, previous === EMPTY_OBJ);\n\n (instance as any)[privateName] = value;\n}\n\nconst SIMPLE_CHANGES_STORE = '__ngSimpleChanges__';\n\nfunction getSimpleChangesStore(instance: any): null|NgSimpleChangesStore {\n return instance[SIMPLE_CHANGES_STORE] || null;\n}\n\nfunction setSimpleChangesStore(instance: any, store: NgSimpleChangesStore): NgSimpleChangesStore {\n return instance[SIMPLE_CHANGES_STORE] = store;\n}\n\n/**\n * Data structure which is monkey-patched on the component instance and used by `ngOnChanges`\n * life-cycle hook to track previous input values.\n */\ninterface NgSimpleChangesStore {\n previous: SimpleChanges;\n current: SimpleChanges|null;\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 * Profiler events is an enum used by the profiler to distinguish between different calls of user\n * code invoked throughout the application lifecycle.\n */\nexport const enum ProfilerEvent {\n /**\n * Corresponds to the point in time before the runtime has called the template function of a\n * component with `RenderFlags.Create`.\n */\n TemplateCreateStart,\n\n /**\n * Corresponds to the point in time after the runtime has called the template function of a\n * component with `RenderFlags.Create`.\n */\n TemplateCreateEnd,\n\n /**\n * Corresponds to the point in time before the runtime has called the template function of a\n * component with `RenderFlags.Update`.\n */\n TemplateUpdateStart,\n\n /**\n * Corresponds to the point in time after the runtime has called the template function of a\n * component with `RenderFlags.Update`.\n */\n TemplateUpdateEnd,\n\n /**\n * Corresponds to the point in time before the runtime has called a lifecycle hook of a component\n * or directive.\n */\n LifecycleHookStart,\n\n /**\n * Corresponds to the point in time after the runtime has called a lifecycle hook of a component\n * or directive.\n */\n LifecycleHookEnd,\n\n /**\n * Corresponds to the point in time before the runtime has evaluated an expression associated with\n * an event or an output.\n */\n OutputStart,\n\n /**\n * Corresponds to the point in time after the runtime has evaluated an expression associated with\n * an event or an output.\n */\n OutputEnd,\n}\n\n/**\n * Profiler function which the runtime will invoke before and after user code.\n */\nexport interface Profiler {\n (event: ProfilerEvent, instance: {}|null, hookOrListener?: (e?: any) => any): void;\n}\n\n\nlet profilerCallback: Profiler|null = null;\n\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 */\nexport const setProfiler = (profiler: Profiler|null) => {\n profilerCallback = profiler;\n};\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 */\nexport const profiler: Profiler = function(\n event: ProfilerEvent, instance: {}|null, hookOrListener?: (e?: any) => any) {\n if (profilerCallback != null /* both `null` and `undefined` */) {\n profilerCallback(event, instance, hookOrListener);\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 const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';\nexport const MATH_ML_NAMESPACE = 'http://www.w3.org/1998/MathML/';\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 * 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: Document|undefined = undefined;\n\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 */\nexport function setDocument(document: Document|undefined): void {\n DOCUMENT = document;\n}\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 */\nexport function getDocument(): Document {\n if (DOCUMENT !== undefined) {\n return DOCUMENT;\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 * @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 * The goal here is to make sure that the browser DOM API is the Renderer.\n * We do this by defining a subset of DOM API to be the renderer and then\n * use that at runtime for rendering.\n *\n * At runtime we can then use the DOM api directly, in server or web-worker\n * it will be easy to implement such API.\n */\n\nimport {RendererStyleFlags2, RendererType2} from '../../render/api_flags';\nimport {TrustedHTML, TrustedScript, TrustedScriptURL} from '../../util/security/trusted_type_defs';\nimport {getDocument} from './document';\nimport {RComment, RElement, RNode, RText} from './renderer_dom';\n\n// TODO: cleanup once the code is merged in angular/angular\nexport enum RendererStyleFlags3 {\n Important = 1 << 0,\n DashCase = 1 << 1\n}\n\nexport type Renderer3 = ObjectOrientedRenderer3|ProceduralRenderer3;\n\nexport type GlobalTargetName = 'document'|'window'|'body';\n\nexport type GlobalTargetResolver = (element: any) => EventTarget;\n\n/**\n * Object Oriented style of API needed to create elements and text nodes.\n *\n * This is the native browser API style, e.g. operations are methods on individual objects\n * like HTMLElement. With this style, no additional code is needed as a facade\n * (reducing payload size).\n * */\nexport interface ObjectOrientedRenderer3 {\n createComment(data: string): RComment;\n createElement(tagName: string): RElement;\n createElementNS(namespace: string, tagName: string): RElement;\n createTextNode(data: string): RText;\n\n querySelector(selectors: string): RElement|null;\n}\n\n/** Returns whether the `renderer` is a `ProceduralRenderer3` */\nexport function isProceduralRenderer(renderer: ProceduralRenderer3|\n ObjectOrientedRenderer3): renderer is ProceduralRenderer3 {\n return !!((renderer as any).listen);\n}\n\n/**\n * Procedural style of API needed to create elements and text nodes.\n *\n * In non-native browser environments (e.g. platforms such as web-workers), this is the\n * facade that enables element manipulation. This also facilitates backwards compatibility\n * with Renderer2.\n */\nexport interface ProceduralRenderer3 {\n destroy(): void;\n createComment(value: string): RComment;\n createElement(name: string, namespace?: string|null): RElement;\n createText(value: string): RText;\n /**\n * This property is allowed to be null / undefined,\n * in which case the view engine won't call it.\n * This is used as a performance optimization for production mode.\n */\n destroyNode?: ((node: RNode) => void)|null;\n appendChild(parent: RElement, newChild: RNode): void;\n insertBefore(parent: RNode, newChild: RNode, refChild: RNode|null, isMove?: boolean): void;\n removeChild(parent: RElement, oldChild: RNode, isHostElement?: boolean): void;\n selectRootElement(selectorOrNode: string|any, preserveContent?: boolean): RElement;\n\n parentNode(node: RNode): RElement|null;\n nextSibling(node: RNode): RNode|null;\n\n setAttribute(\n el: RElement, name: string, value: string|TrustedHTML|TrustedScript|TrustedScriptURL,\n namespace?: string|null): void;\n removeAttribute(el: RElement, name: string, namespace?: string|null): void;\n addClass(el: RElement, name: string): void;\n removeClass(el: RElement, name: string): void;\n setStyle(\n el: RElement, style: string, value: any,\n flags?: RendererStyleFlags2|RendererStyleFlags3): void;\n removeStyle(el: RElement, style: string, flags?: RendererStyleFlags2|RendererStyleFlags3): void;\n setProperty(el: RElement, name: string, value: any): void;\n setValue(node: RText|RComment, value: string): void;\n\n // TODO(misko): Deprecate in favor of addEventListener/removeEventListener\n listen(\n target: GlobalTargetName|RNode, eventName: string,\n callback: (event: any) => boolean | void): () => void;\n}\n\nexport interface RendererFactory3 {\n createRenderer(hostElement: RElement|null, rendererType: RendererType2|null): Renderer3;\n begin?(): void;\n end?(): void;\n}\n\nexport const domRendererFactory3: RendererFactory3 = {\n createRenderer: (hostElement: RElement|null, rendererType: RendererType2|null): Renderer3 => {\n return getDocument();\n }\n};\n\n\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\nexport const unusedValueExportToPlacateAjd = 1;\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\nimport {assertDomNode, assertGreaterThan, assertGreaterThanOrEqual, assertIndexInRange, assertLessThan} from '../../util/assert';\nimport {assertTNode, assertTNodeForLView} from '../assert';\nimport {LContainer, TYPE} from '../interfaces/container';\nimport {TConstants, TNode} from '../interfaces/node';\nimport {isProceduralRenderer} from '../interfaces/renderer';\nimport {RNode} from '../interfaces/renderer_dom';\nimport {isLContainer, isLView} from '../interfaces/type_checks';\nimport {FLAGS, HEADER_OFFSET, HOST, LView, LViewFlags, PARENT, PREORDER_HOOK_FLAGS, RENDERER, TData, TRANSPLANTED_VIEWS_TO_REFRESH, TView} from '../interfaces/view';\n\n\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/**\n * Returns `RNode`.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nexport function unwrapRNode(value: RNode|LView|LContainer): RNode {\n while (Array.isArray(value)) {\n value = value[HOST] as any;\n }\n return value as RNode;\n}\n\n/**\n * Returns `LView` or `null` if not found.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nexport function unwrapLView(value: RNode|LView|LContainer): LView|null {\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') return value as LView;\n value = value[HOST] as any;\n }\n return null;\n}\n\n/**\n * Returns `LContainer` or `null` if not found.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nexport function unwrapLContainer(value: RNode|LView|LContainer): LContainer|null {\n while (Array.isArray(value)) {\n // This check is same as `isLContainer()` 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 (value[TYPE] === true) return value as LContainer;\n value = value[HOST] as any;\n }\n return null;\n}\n\n/**\n * Retrieves an element value from the provided `viewData`, by unwrapping\n * from any containers, component views, or style contexts.\n */\nexport function getNativeByIndex(index: number, lView: LView): RNode {\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/**\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 */\nexport function getNativeByTNode(tNode: TNode, lView: LView): RNode {\n ngDevMode && assertTNodeForLView(tNode, lView);\n ngDevMode && assertIndexInRange(lView, tNode.index);\n const node: RNode = unwrapRNode(lView[tNode.index]);\n ngDevMode && !isProceduralRenderer(lView[RENDERER]) && assertDomNode(node);\n return node;\n}\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 */\nexport function getNativeByTNodeOrNull(tNode: TNode|null, lView: LView): RNode|null {\n const index = tNode === null ? -1 : tNode.index;\n if (index !== -1) {\n ngDevMode && assertTNodeForLView(tNode!, lView);\n const node: RNode|null = unwrapRNode(lView[index]);\n ngDevMode && node !== null && !isProceduralRenderer(lView[RENDERER]) && assertDomNode(node);\n return node;\n }\n return null;\n}\n\n\n// fixme(misko): The return Type should be `TNode|null`\nexport function getTNode(tView: TView, index: number): TNode {\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] as TNode;\n ngDevMode && tNode !== null && assertTNode(tNode);\n return tNode;\n}\n\n/** Retrieves a value from any `LView` or `TData`. */\nexport function load(view: LView|TData, index: number): T {\n ngDevMode && assertIndexInRange(view, index);\n return view[index];\n}\n\nexport function getComponentLViewByIndex(nodeIndex: number, hostView: LView): LView {\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\n/** Checks whether a given view is in creation mode */\nexport function isCreationMode(view: LView): boolean {\n return (view[FLAGS] & LViewFlags.CreationMode) === LViewFlags.CreationMode;\n}\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 */\nexport function viewAttachedToChangeDetector(view: LView): boolean {\n return (view[FLAGS] & LViewFlags.Attached) === LViewFlags.Attached;\n}\n\n/** Returns a boolean for whether the view is attached to a container. */\nexport function viewAttachedToContainer(view: LView): boolean {\n return isLContainer(view[PARENT]);\n}\n\n/** Returns a constant from `TConstants` instance. */\nexport function getConstant(consts: TConstants|null, index: null|undefined): null;\nexport function getConstant(consts: TConstants, index: number): T|null;\nexport function getConstant(consts: TConstants|null, index: number|null|undefined): T|null;\nexport function getConstant(consts: TConstants|null, index: number|null|undefined): T|null {\n if (index === null || index === undefined) return null;\n ngDevMode && assertIndexInRange(consts!, index);\n return consts![index] as unknown as T;\n}\n\n/**\n * Resets the pre-order hook flags of the view.\n * @param lView the LView on which the flags are reset\n */\nexport function resetPreOrderHookFlags(lView: LView) {\n lView[PREORDER_HOOK_FLAGS] = 0;\n}\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 */\nexport function updateTransplantedViewCount(lContainer: LContainer, amount: 1|- 1) {\n lContainer[TRANSPLANTED_VIEWS_TO_REFRESH] += amount;\n let viewOrContainer: LView|LContainer = lContainer;\n let parent: LView|LContainer|null = 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","/**\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\nimport {InjectFlags} from '../di/interface/injector';\nimport {assertDefined, assertEqual, assertGreaterThanOrEqual, assertLessThan, assertNotEqual} from '../util/assert';\nimport {assertLViewOrUndefined, assertTNodeForLView, assertTNodeForTView} from './assert';\nimport {DirectiveDef} from './interfaces/definition';\nimport {TNode, TNodeType} from './interfaces/node';\nimport {CONTEXT, DECLARATION_VIEW, HEADER_OFFSET, LView, OpaqueViewState, T_HOST, TData, TVIEW, TView, TViewType} from './interfaces/view';\nimport {MATH_ML_NAMESPACE, SVG_NAMESPACE} from './namespaces';\nimport {getTNode} from './util/view_utils';\n\n\n/**\n *\n */\ninterface LFrame {\n /**\n * Parent LFrame.\n *\n * This is needed when `leaveView` is called to restore the previous state.\n */\n parent: LFrame;\n\n /**\n * Child LFrame.\n *\n * This is used to cache existing LFrames to relieve the memory pressure.\n */\n child: LFrame|null;\n\n /**\n * State of the current view being processed.\n *\n * An array of nodes (text, element, container, etc), pipes, their bindings, and\n * any local variables that need to be stored between invocations.\n */\n lView: LView;\n\n /**\n * Current `TView` associated with the `LFrame.lView`.\n *\n * One can get `TView` from `lFrame[TVIEW]` however because it is so common it makes sense to\n * store it in `LFrame` for perf reasons.\n */\n tView: TView;\n\n /**\n * Used to set the parent property when nodes are created and track query results.\n *\n * This is used in conjunction with `isParent`.\n */\n currentTNode: TNode|null;\n\n /**\n * If `isParent` is:\n * - `true`: then `currentTNode` points to a parent node.\n * - `false`: then `currentTNode` points to previous node (sibling).\n */\n isParent: boolean;\n\n /**\n * Index of currently selected element in LView.\n *\n * Used by binding instructions. Updated as part of advance instruction.\n */\n selectedIndex: number;\n\n /**\n * Current pointer to the binding index.\n */\n bindingIndex: number;\n\n /**\n * The last viewData retrieved by nextContext().\n * Allows building nextContext() and reference() calls.\n *\n * e.g. const inner = x().$implicit; const outer = x().$implicit;\n */\n contextLView: LView;\n\n /**\n * Store the element depth count. This is used to identify the root elements of the template\n * so that we can then attach patch data `LView` to only those elements. We know that those\n * are the only places where the patch data could change, this way we will save on number\n * of places where tha patching occurs.\n */\n elementDepthCount: number;\n\n /**\n * Current namespace to be used when creating elements\n */\n currentNamespace: string|null;\n\n\n /**\n * The root index from which pure function instructions should calculate their binding\n * indices. In component views, this is TView.bindingStartIndex. In a host binding\n * context, this is the TView.expandoStartIndex + any dirs/hostVars before the given dir.\n */\n bindingRootIndex: number;\n\n /**\n * Current index of a View or Content Query which needs to be processed next.\n * We iterate over the list of Queries and increment current query index at every step.\n */\n currentQueryIndex: number;\n\n /**\n * When host binding is executing this points to the directive index.\n * `TView.data[currentDirectiveIndex]` is `DirectiveDef`\n * `LView[currentDirectiveIndex]` is directive instance.\n */\n currentDirectiveIndex: number;\n\n /**\n * Are we currently in i18n block as denoted by `ɵɵelementStart` and `ɵɵelementEnd`.\n *\n * This information is needed because while we are in i18n block all elements must be pre-declared\n * in the translation. (i.e. `Hello �#2�World�/#2�!` pre-declares element at `�#2�` location.)\n * This allocates `TNodeType.Placeholder` element at location `2`. If translator removes `�#2�`\n * from translation than the runtime must also ensure tha element at `2` does not get inserted\n * into the DOM. The translation does not carry information about deleted elements. Therefor the\n * only way to know that an element is deleted is that it was not pre-declared in the translation.\n *\n * This flag works by ensuring that elements which are created without pre-declaration\n * (`TNodeType.Placeholder`) are not inserted into the DOM render tree. (It does mean that the\n * element still gets instantiated along with all of its behavior [directives])\n */\n inI18n: boolean;\n}\n\n/**\n * All implicit instruction state is stored here.\n *\n * It is useful to have a single object where all of the state is stored as a mental model\n * (rather it being spread across many different variables.)\n *\n * PERF NOTE: Turns out that writing to a true global variable is slower than\n * having an intermediate object with properties.\n */\ninterface InstructionState {\n /**\n * Current `LFrame`\n *\n * `null` if we have not called `enterView`\n */\n lFrame: LFrame;\n\n /**\n * Stores whether directives should be matched to elements.\n *\n * When template contains `ngNonBindable` then we need to prevent the runtime from matching\n * directives on children of that element.\n *\n * Example:\n * ```\n * \n * Should match component / directive.\n * \n *
\n * \n * Should not match component / directive because we are in ngNonBindable.\n * \n *
\n * ```\n */\n bindingsEnabled: boolean;\n\n /**\n * In this mode, any changes in bindings will throw an ExpressionChangedAfterChecked error.\n *\n * Necessary to support ChangeDetectorRef.checkNoChanges().\n *\n * checkNoChanges Runs only in devmode=true and verifies that no unintended changes exist in\n * the change detector or its children.\n */\n isInCheckNoChangesMode: boolean;\n}\n\nconst instructionState: InstructionState = {\n lFrame: createLFrame(null),\n bindingsEnabled: true,\n isInCheckNoChangesMode: false,\n};\n\n/**\n * Returns true if the instruction state stack is empty.\n *\n * Intended to be called from tests only (tree shaken otherwise).\n */\nexport function specOnlyIsInstructionStateEmpty(): boolean {\n return instructionState.lFrame.parent === null;\n}\n\n\nexport function getElementDepthCount() {\n return instructionState.lFrame.elementDepthCount;\n}\n\nexport function increaseElementDepthCount() {\n instructionState.lFrame.elementDepthCount++;\n}\n\nexport function decreaseElementDepthCount() {\n instructionState.lFrame.elementDepthCount--;\n}\n\nexport function getBindingsEnabled(): boolean {\n return instructionState.bindingsEnabled;\n}\n\n\n/**\n * Enables directive matching on elements.\n *\n * * Example:\n * ```\n * \n * Should match component / directive.\n * \n *
\n * \n * \n * Should not match component / directive because we are in ngNonBindable.\n * \n * \n *
\n * ```\n *\n * @codeGenApi\n */\nexport function ɵɵenableBindings(): void {\n instructionState.bindingsEnabled = true;\n}\n\n/**\n * Disables directive matching on element.\n *\n * * Example:\n * ```\n * \n * Should match component / directive.\n * \n *
\n * \n * \n * Should not match component / directive because we are in ngNonBindable.\n * \n * \n *
\n * ```\n *\n * @codeGenApi\n */\nexport function ɵɵdisableBindings(): void {\n instructionState.bindingsEnabled = false;\n}\n\n/**\n * Return the current `LView`.\n */\nexport function getLView(): LView {\n return instructionState.lFrame.lView;\n}\n\n/**\n * Return the current `TView`.\n */\nexport function getTView(): TView {\n return instructionState.lFrame.tView;\n}\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 */\nexport function ɵɵrestoreView(viewToRestore: OpaqueViewState): T {\n instructionState.lFrame.contextLView = viewToRestore as any as LView;\n return (viewToRestore as any as LView)[CONTEXT] as T;\n}\n\n\nexport function getCurrentTNode(): TNode|null {\n let currentTNode = getCurrentTNodePlaceholderOk();\n while (currentTNode !== null && currentTNode.type === TNodeType.Placeholder) {\n currentTNode = currentTNode.parent;\n }\n return currentTNode;\n}\n\nexport function getCurrentTNodePlaceholderOk(): TNode|null {\n return instructionState.lFrame.currentTNode;\n}\n\nexport function getCurrentParentTNode(): TNode|null {\n const lFrame = instructionState.lFrame;\n const currentTNode = lFrame.currentTNode;\n return lFrame.isParent ? currentTNode : currentTNode!.parent;\n}\n\nexport function setCurrentTNode(tNode: TNode|null, isParent: boolean) {\n ngDevMode && tNode && assertTNodeForTView(tNode, instructionState.lFrame.tView);\n const lFrame = instructionState.lFrame;\n lFrame.currentTNode = tNode;\n lFrame.isParent = isParent;\n}\n\nexport function isCurrentTNodeParent(): boolean {\n return instructionState.lFrame.isParent;\n}\n\nexport function setCurrentTNodeAsNotParent(): void {\n instructionState.lFrame.isParent = false;\n}\nexport function setCurrentTNodeAsParent(): void {\n instructionState.lFrame.isParent = true;\n}\n\nexport function getContextLView(): LView {\n return instructionState.lFrame.contextLView;\n}\n\nexport function isInCheckNoChangesMode(): boolean {\n // TODO(misko): remove this from the LView since it is ngDevMode=true mode only.\n return instructionState.isInCheckNoChangesMode;\n}\n\nexport function setIsInCheckNoChangesMode(mode: boolean): void {\n instructionState.isInCheckNoChangesMode = mode;\n}\n\n// top level variables should not be exported for performance reasons (PERF_NOTES.md)\nexport function 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}\n\nexport function getBindingIndex(): number {\n return instructionState.lFrame.bindingIndex;\n}\n\nexport function setBindingIndex(value: number): number {\n return instructionState.lFrame.bindingIndex = value;\n}\n\nexport function nextBindingIndex(): number {\n return instructionState.lFrame.bindingIndex++;\n}\n\nexport function incrementBindingIndex(count: number): number {\n const lFrame = instructionState.lFrame;\n const index = lFrame.bindingIndex;\n lFrame.bindingIndex = lFrame.bindingIndex + count;\n return index;\n}\n\nexport function isInI18nBlock() {\n return instructionState.lFrame.inI18n;\n}\n\nexport function setInI18nBlock(isInI18nBlock: boolean): void {\n instructionState.lFrame.inI18n = isInI18nBlock;\n}\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 */\nexport function setBindingRootForHostBindings(\n bindingRootIndex: number, currentDirectiveIndex: number) {\n const lFrame = instructionState.lFrame;\n lFrame.bindingIndex = lFrame.bindingRootIndex = bindingRootIndex;\n setCurrentDirectiveIndex(currentDirectiveIndex);\n}\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 */\nexport function getCurrentDirectiveIndex(): number {\n return instructionState.lFrame.currentDirectiveIndex;\n}\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 */\nexport function setCurrentDirectiveIndex(currentDirectiveIndex: number): void {\n instructionState.lFrame.currentDirectiveIndex = currentDirectiveIndex;\n}\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 */\nexport function getCurrentDirectiveDef(tData: TData): DirectiveDef|null {\n const currentDirectiveIndex = instructionState.lFrame.currentDirectiveIndex;\n return currentDirectiveIndex === -1 ? null : tData[currentDirectiveIndex] as DirectiveDef;\n}\n\nexport function getCurrentQueryIndex(): number {\n return instructionState.lFrame.currentQueryIndex;\n}\n\nexport function setCurrentQueryIndex(value: number): void {\n instructionState.lFrame.currentQueryIndex = value;\n}\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: LView): TNode|null {\n const tView = lView[TVIEW];\n\n // Return the declaration parent for embedded views\n if (tView.type === TViewType.Embedded) {\n ngDevMode && assertDefined(tView.declTNode, 'Embedded TNodes should have declaration parents.');\n return tView.declTNode;\n }\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 === TViewType.Component) {\n return lView[T_HOST];\n }\n\n // Remaining TNode type is `TViewType.Root` which doesn't have a parent TNode.\n return null;\n}\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 */\nexport function enterDI(lView: LView, tNode: TNode, flags: InjectFlags) {\n ngDevMode && assertLViewOrUndefined(lView);\n\n if (flags & InjectFlags.SkipSelf) {\n ngDevMode && assertTNodeForTView(tNode, lView[TVIEW]);\n\n let parentTNode = tNode as TNode | null;\n let parentLView = lView;\n\n while (true) {\n ngDevMode && assertDefined(parentTNode, 'Parent TNode should be defined');\n parentTNode = parentTNode!.parent as TNode | null;\n if (parentTNode === null && !(flags & InjectFlags.Host)) {\n parentTNode = getDeclarationTNode(parentLView);\n if (parentTNode === null) break;\n\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\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 & (TNodeType.Element | TNodeType.ElementContainer)) {\n break;\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 } else {\n tNode = parentTNode;\n lView = parentLView;\n }\n }\n\n ngDevMode && assertTNodeForLView(tNode, lView);\n const lFrame = instructionState.lFrame = allocLFrame();\n lFrame.currentTNode = tNode;\n lFrame.lView = lView;\n\n return true;\n}\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 */\nexport function enterView(newView: LView): void {\n ngDevMode && assertNotEqual(newView[0], newView[1] as any, '????');\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/**\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}\n\nfunction createLFrame(parent: LFrame|null): LFrame {\n const lFrame: 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/**\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(): LFrame {\n const oldLFrame = instructionState.lFrame;\n instructionState.lFrame = oldLFrame.parent;\n oldLFrame.currentTNode = null!;\n oldLFrame.lView = null!;\n return oldLFrame;\n}\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 */\nexport const leaveDI: () => void = leaveViewLight;\n\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 */\nexport function 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}\n\nexport function nextContextImpl(level: number): T {\n const contextLView = instructionState.lFrame.contextLView =\n walkUpViews(level, instructionState.lFrame.contextLView!);\n return contextLView[CONTEXT] as T;\n}\n\nfunction walkUpViews(nestingLevel: number, currentView: LView): LView {\n while (nestingLevel > 0) {\n ngDevMode &&\n assertDefined(\n currentView[DECLARATION_VIEW],\n '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/**\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 */\nexport function getSelectedIndex() {\n return instructionState.lFrame.selectedIndex;\n}\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 */\nexport function setSelectedIndex(index: number) {\n ngDevMode && index !== -1 &&\n assertGreaterThanOrEqual(index, HEADER_OFFSET, 'Index must be past HEADER_OFFSET (or -1).');\n ngDevMode &&\n assertLessThan(\n index, instructionState.lFrame.lView.length, 'Can\\'t set index passed end of LView');\n instructionState.lFrame.selectedIndex = index;\n}\n\n/**\n * Gets the `tNode` that represents currently selected element.\n */\nexport function getSelectedTNode() {\n const lFrame = instructionState.lFrame;\n return getTNode(lFrame.tView, lFrame.selectedIndex);\n}\n\n/**\n * Sets the namespace used to create elements to `'http://www.w3.org/2000/svg'` in global state.\n *\n * @codeGenApi\n */\nexport function ɵɵnamespaceSVG() {\n instructionState.lFrame.currentNamespace = SVG_NAMESPACE;\n}\n\n/**\n * Sets the namespace used to create elements to `'http://www.w3.org/1998/MathML/'` in global state.\n *\n * @codeGenApi\n */\nexport function ɵɵnamespaceMathML() {\n instructionState.lFrame.currentNamespace = MATH_ML_NAMESPACE;\n}\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 */\nexport function ɵɵnamespaceHTML() {\n namespaceHTMLInternal();\n}\n\n/**\n * Sets the namespace used to create elements to `null`, which forces element creation to use\n * `createElement` rather than `createElementNS`.\n */\nexport function namespaceHTMLInternal() {\n instructionState.lFrame.currentNamespace = null;\n}\n\nexport function getNamespace(): string|null {\n return instructionState.lFrame.currentNamespace;\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\nimport {AfterContentChecked, AfterContentInit, AfterViewChecked, AfterViewInit, DoCheck, OnChanges, OnDestroy, OnInit} from '../interface/lifecycle_hooks';\nimport {assertDefined, assertEqual, assertNotEqual} from '../util/assert';\nimport {assertFirstCreatePass} from './assert';\nimport {NgOnChangesFeatureImpl} from './features/ng_onchanges_feature';\nimport {DirectiveDef} from './interfaces/definition';\nimport {TNode} from './interfaces/node';\nimport {FLAGS, HookData, InitPhaseState, LView, LViewFlags, PREORDER_HOOK_FLAGS, PreOrderHookFlags, TView} from './interfaces/view';\nimport {profiler, ProfilerEvent} from './profiler';\nimport {isInCheckNoChangesMode} from './state';\n\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 */\nexport function registerPreOrderHooks(\n directiveIndex: number, directiveDef: DirectiveDef, tView: TView): void {\n ngDevMode && assertFirstCreatePass(tView);\n const {ngOnChanges, ngOnInit, ngDoCheck} =\n directiveDef.type.prototype as OnChanges & OnInit & DoCheck;\n\n if (ngOnChanges as Function | undefined) {\n const wrappedOnChanges = NgOnChangesFeatureImpl(directiveDef);\n (tView.preOrderHooks || (tView.preOrderHooks = [])).push(directiveIndex, wrappedOnChanges);\n (tView.preOrderCheckHooks || (tView.preOrderCheckHooks = []))\n .push(directiveIndex, wrappedOnChanges);\n }\n\n if (ngOnInit) {\n (tView.preOrderHooks || (tView.preOrderHooks = [])).push(0 - directiveIndex, ngOnInit);\n }\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 *\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 */\nexport function registerPostOrderHooks(tView: TView, tNode: TNode): void {\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] as DirectiveDef;\n ngDevMode && assertDefined(directiveDef, 'Expecting DirectiveDef');\n const lifecycleHooks: AfterContentInit&AfterContentChecked&AfterViewInit&AfterViewChecked&\n OnDestroy = directiveDef.type.prototype;\n const {\n ngAfterContentInit,\n ngAfterContentChecked,\n ngAfterViewInit,\n ngAfterViewChecked,\n ngOnDestroy\n } = lifecycleHooks;\n\n if (ngAfterContentInit) {\n (tView.contentHooks || (tView.contentHooks = [])).push(-i, ngAfterContentInit);\n }\n\n if (ngAfterContentChecked) {\n (tView.contentHooks || (tView.contentHooks = [])).push(i, ngAfterContentChecked);\n (tView.contentCheckHooks || (tView.contentCheckHooks = [])).push(i, ngAfterContentChecked);\n }\n\n if (ngAfterViewInit) {\n (tView.viewHooks || (tView.viewHooks = [])).push(-i, ngAfterViewInit);\n }\n\n if (ngAfterViewChecked) {\n (tView.viewHooks || (tView.viewHooks = [])).push(i, ngAfterViewChecked);\n (tView.viewCheckHooks || (tView.viewCheckHooks = [])).push(i, ngAfterViewChecked);\n }\n\n if (ngOnDestroy != null) {\n (tView.destroyHooks || (tView.destroyHooks = [])).push(i, ngOnDestroy);\n }\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\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 */\nexport function executeCheckHooks(lView: LView, hooks: HookData, nodeIndex?: number|null) {\n callHooks(lView, hooks, InitPhaseState.InitPhaseCompleted, nodeIndex);\n}\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 */\nexport function executeInitAndCheckHooks(\n lView: LView, hooks: HookData, initPhase: InitPhaseState, nodeIndex?: number|null) {\n ngDevMode &&\n assertNotEqual(\n initPhase, InitPhaseState.InitPhaseCompleted,\n 'Init pre-order hooks should not be called more than once');\n if ((lView[FLAGS] & LViewFlags.InitPhaseStateMask) === initPhase) {\n callHooks(lView, hooks, initPhase, nodeIndex);\n }\n}\n\nexport function incrementInitPhaseFlags(lView: LView, initPhase: InitPhaseState): void {\n ngDevMode &&\n assertNotEqual(\n initPhase, InitPhaseState.InitPhaseCompleted,\n 'Init hooks phase should not be incremented after all init hooks have been run.');\n let flags = lView[FLAGS];\n if ((flags & LViewFlags.InitPhaseStateMask) === initPhase) {\n flags &= LViewFlags.IndexWithinInitPhaseReset;\n flags += LViewFlags.InitPhaseStateIncrementer;\n lView[FLAGS] = flags;\n }\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(\n currentView: LView, arr: HookData, initPhase: InitPhaseState,\n currentNodeIndex: number|null|undefined): void {\n ngDevMode &&\n assertEqual(\n isInCheckNoChangesMode(), false,\n 'Hooks should never be run when in check no changes mode.');\n const startIndex = currentNodeIndex !== undefined ?\n (currentView[PREORDER_HOOK_FLAGS] & 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] as number | (() => void);\n if (typeof hook === 'number') {\n lastNodeIndexFound = arr[i] as number;\n if (currentNodeIndex != null && lastNodeIndexFound >= currentNodeIndex) {\n break;\n }\n } else {\n const isInitHook = arr[i] < 0;\n if (isInitHook)\n currentView[PREORDER_HOOK_FLAGS] += PreOrderHookFlags.NumberOfInitHooksCalledIncrementer;\n if (lastNodeIndexFound < nodeIndexLimit || nodeIndexLimit == -1) {\n callHook(currentView, initPhase, arr, i);\n currentView[PREORDER_HOOK_FLAGS] =\n (currentView[PREORDER_HOOK_FLAGS] & PreOrderHookFlags.NumberOfInitHooksCalledMask) + i +\n 2;\n }\n i++;\n }\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: LView, initPhase: InitPhaseState, arr: HookData, i: number) {\n const isInitHook = arr[i] < 0;\n const hook = arr[i + 1] as () => void;\n const directiveIndex = isInitHook ? -arr[i] : arr[i] as number;\n const directive = currentView[directiveIndex];\n if (isInitHook) {\n const indexWithintInitPhase = currentView[FLAGS] >> 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] >> PreOrderHookFlags.NumberOfInitHooksCalledShift) &&\n (currentView[FLAGS] & LViewFlags.InitPhaseStateMask) === initPhase) {\n currentView[FLAGS] += LViewFlags.IndexWithinInitPhaseIncrementer;\n profiler(ProfilerEvent.LifecycleHookStart, directive, hook);\n try {\n hook.call(directive);\n } finally {\n profiler(ProfilerEvent.LifecycleHookEnd, directive, hook);\n }\n }\n } else {\n profiler(ProfilerEvent.LifecycleHookStart, directive, hook);\n try {\n hook.call(directive);\n } finally {\n profiler(ProfilerEvent.LifecycleHookEnd, directive, hook);\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\nimport {InjectFlags} from '../../di/interface/injector';\nimport {ProviderToken} from '../../di/provider_token';\nimport {assertDefined, assertEqual} from '../../util/assert';\n\nimport {TDirectiveHostNode} from './node';\nimport {LView, TData} from './view';\n\n/**\n * Offsets of the `NodeInjector` data structure in the expando.\n *\n * `NodeInjector` is stored in both `LView` as well as `TView.data`. All storage requires 9 words.\n * First 8 are reserved for bloom filter and the 9th is reserved for the associated `TNode` as well\n * as parent `NodeInjector` pointer. All indexes are starting with `index` and have an offset as\n * shown.\n *\n * `LView` layout:\n * ```\n * index + 0: cumulative bloom filter\n * index + 1: cumulative bloom filter\n * index + 2: cumulative bloom filter\n * index + 3: cumulative bloom filter\n * index + 4: cumulative bloom filter\n * index + 5: cumulative bloom filter\n * index + 6: cumulative bloom filter\n * index + 7: cumulative bloom filter\n * index + 8: cumulative bloom filter\n * index + PARENT: Index to the parent injector. See `RelativeInjectorLocation`\n * `const parent = lView[index + NodeInjectorOffset.PARENT]`\n * ```\n *\n * `TViewData` layout:\n * ```\n * index + 0: cumulative bloom filter\n * index + 1: cumulative bloom filter\n * index + 2: cumulative bloom filter\n * index + 3: cumulative bloom filter\n * index + 4: cumulative bloom filter\n * index + 5: cumulative bloom filter\n * index + 6: cumulative bloom filter\n * index + 7: cumulative bloom filter\n * index + 8: cumulative bloom filter\n * index + TNODE: TNode associated with this `NodeInjector`\n * `canst tNode = tView.data[index + NodeInjectorOffset.TNODE]`\n * ```\n */\nexport const enum NodeInjectorOffset {\n TNODE = 8,\n PARENT = 8,\n BLOOM_SIZE = 8,\n SIZE = 9,\n}\n\n/**\n * Represents a relative location of parent injector.\n *\n * The interfaces encodes number of parents `LView`s to traverse and index in the `LView`\n * pointing to the parent injector.\n */\nexport interface RelativeInjectorLocation {\n __brand__: 'RelativeInjectorLocationFlags';\n}\n\nexport const enum RelativeInjectorLocationFlags {\n InjectorIndexMask = 0b111111111111111,\n ViewOffsetShift = 16,\n NO_PARENT = -1,\n}\n\nexport const NO_PARENT_INJECTOR: RelativeInjectorLocation = -1 as any;\n\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 {\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 {\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/**\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 */\nexport class NodeInjectorFactory {\n /**\n * The inject implementation to be activated when using the factory.\n */\n injectImpl: null|((token: ProviderToken, flags?: InjectFlags) => T);\n\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 resolving = false;\n\n /**\n * Marks that the token can see other Tokens declared in `viewProviders` on the same node.\n */\n canSeeViewProviders: boolean;\n\n /**\n * An array of factories to use in case of `multi` provider.\n */\n multi?: Array<() => any>;\n\n /**\n * Number of `multi`-providers which belong to the component.\n *\n * This is needed because when multiple components and directives declare the `multi` provider\n * they have to be concatenated in the correct order.\n *\n * Example:\n *\n * If we have a component and directive active an a single element as declared here\n * ```\n * component:\n * provides: [ {provide: String, useValue: 'component', multi: true} ],\n * viewProvides: [ {provide: String, useValue: 'componentView', multi: true} ],\n *\n * directive:\n * provides: [ {provide: String, useValue: 'directive', multi: true} ],\n * ```\n *\n * Then the expected results are:\n *\n * ```\n * providers: ['component', 'directive']\n * viewProviders: ['component', 'componentView', 'directive']\n * ```\n *\n * The way to think about it is that the `viewProviders` have been inserted after the component\n * but before the directives, which is why we need to know how many `multi`s have been declared by\n * the component.\n */\n componentProviders?: number;\n\n /**\n * Current index of the Factory in the `data`. Needed for `viewProviders` and `providers` merging.\n * See `providerFactory`.\n */\n index?: number;\n\n /**\n * Because the same `multi` provider can be declared in `provides` and `viewProvides` it is\n * possible for `viewProvides` to shadow the `provides`. For this reason we store the\n * `provideFactory` of the `providers` so that `providers` can be extended with `viewProviders`.\n *\n * Example:\n *\n * Given:\n * ```\n * provides: [ {provide: String, useValue: 'all', multi: true} ],\n * viewProvides: [ {provide: String, useValue: 'viewOnly', multi: true} ],\n * ```\n *\n * We have to return `['all']` in case of content injection, but `['all', 'viewOnly']` in case\n * of view injection. We further have to make sure that the shared instances (in our case\n * `all`) are the exact same instance in both the content as well as the view injection. (We\n * have to make sure that we don't double instantiate.) For this reason the `viewProvides`\n * `Factory` has a pointer to the shadowed `provides` factory so that it can instantiate the\n * `providers` (`['all']`) and then extend it with `viewProviders` (`['all'] + ['viewOnly'] =\n * ['all', 'viewOnly']`).\n */\n providerFactory?: NodeInjectorFactory|null;\n\n\n constructor(\n /**\n * Factory to invoke in order to create a new instance.\n */\n public factory:\n (this: NodeInjectorFactory, _: undefined,\n /**\n * array where injectables tokens are stored. This is used in\n * case of an error reporting to produce friendlier errors.\n */\n tData: TData,\n /**\n * array where existing instances of injectables are stored. This is used in case\n * of multi shadow is needed. See `multi` field documentation.\n */\n lView: LView,\n /**\n * The TNode of the same element injector.\n */\n tNode: TDirectiveHostNode) => any,\n /**\n * Set to `true` if the token is declared in `viewProviders` (or if it is component).\n */\n isViewProvider: boolean,\n injectImplementation: null|((token: ProviderToken, flags?: InjectFlags) => T)) {\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}\n\nexport function isFactory(obj: any): obj is NodeInjectorFactory {\n return obj instanceof NodeInjectorFactory;\n}\n\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\nexport const unusedValueExportToPlacateAjd = 1;\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 */\nimport {KeyValueArray} from '../../util/array_utils';\nimport {TStylingRange} from '../interfaces/styling';\nimport {TIcu} from './i18n';\nimport {CssSelector} from './projection';\nimport {RNode} from './renderer_dom';\nimport {LView, TView} from './view';\n\n\n/**\n * TNodeType corresponds to the {@link TNode} `type` property.\n *\n * NOTE: type IDs are such that we use each bit to denote a type. This is done so that we can easily\n * check if the `TNode` is of more than one type.\n *\n * `if (tNode.type === TNodeType.Text || tNode.type === TNode.Element)`\n * can be written as:\n * `if (tNode.type & (TNodeType.Text | TNodeType.Element))`\n *\n * However any given `TNode` can only be of one type.\n */\nexport const enum TNodeType {\n /**\n * The TNode contains information about a DOM element aka {@link RText}.\n */\n Text = 0b1,\n\n /**\n * The TNode contains information about a DOM element aka {@link RElement}.\n */\n Element = 0b10,\n\n /**\n * The TNode contains information about an {@link LContainer} for embedded views.\n */\n Container = 0b100,\n\n /**\n * The TNode contains information about an `` element {@link RNode}.\n */\n ElementContainer = 0b1000,\n\n /**\n * The TNode contains information about an `` projection\n */\n Projection = 0b10000,\n\n /**\n * The TNode contains information about an ICU comment used in `i18n`.\n */\n Icu = 0b100000,\n\n /**\n * Special node type representing a placeholder for future `TNode` at this location.\n *\n * I18n translation blocks are created before the element nodes which they contain. (I18n blocks\n * can span over many elements.) Because i18n `TNode`s (representing text) are created first they\n * often may need to point to element `TNode`s which are not yet created. In such a case we create\n * a `Placeholder` `TNode`. This allows the i18n to structurally link the `TNode`s together\n * without knowing any information about the future nodes which will be at that location.\n *\n * On `firstCreatePass` When element instruction executes it will try to create a `TNode` at that\n * location. Seeing a `Placeholder` `TNode` already there tells the system that it should reuse\n * existing `TNode` (rather than create a new one) and just update the missing information.\n */\n Placeholder = 0b1000000,\n\n // Combined Types These should never be used for `TNode.type` only as a useful way to check\n // if `TNode.type` is one of several choices.\n\n // See: https://github.com/microsoft/TypeScript/issues/35875 why we can't refer to existing enum.\n AnyRNode = 0b11, // Text | Element,\n AnyContainer = 0b1100, // Container | ElementContainer, // See:\n}\n\n/**\n * Converts `TNodeType` into human readable text.\n * Make sure this matches with `TNodeType`\n */\nexport function toTNodeTypeAsString(tNodeType: TNodeType): string {\n let text = '';\n (tNodeType & TNodeType.Text) && (text += '|Text');\n (tNodeType & TNodeType.Element) && (text += '|Element');\n (tNodeType & TNodeType.Container) && (text += '|Container');\n (tNodeType & TNodeType.ElementContainer) && (text += '|ElementContainer');\n (tNodeType & TNodeType.Projection) && (text += '|Projection');\n (tNodeType & TNodeType.Icu) && (text += '|IcuContainer');\n (tNodeType & TNodeType.Placeholder) && (text += '|Placeholder');\n return text.length > 0 ? text.substring(1) : text;\n}\n\n/**\n * Corresponds to the TNode.flags property.\n */\nexport const enum TNodeFlags {\n /** Bit #1 - This bit is set if the node is a host for any directive (including a component) */\n isDirectiveHost = 0x1,\n\n /**\n * Bit #2 - This bit is set if the node is a host for a component.\n *\n * Setting this bit implies that the `isDirectiveHost` bit is set as well.\n * */\n isComponentHost = 0x2,\n\n /** Bit #3 - This bit is set if the node has been projected */\n isProjected = 0x4,\n\n /** Bit #4 - This bit is set if any directive on this node has content queries */\n hasContentQuery = 0x8,\n\n /** Bit #5 - This bit is set if the node has any \"class\" inputs */\n hasClassInput = 0x10,\n\n /** Bit #6 - This bit is set if the node has any \"style\" inputs */\n hasStyleInput = 0x20,\n\n /** Bit #7 This bit is set if the node has been detached by i18n */\n isDetached = 0x40,\n\n /**\n * Bit #8 - This bit is set if the node has directives with host bindings.\n *\n * This flags allows us to guard host-binding logic and invoke it only on nodes\n * that actually have directives with host bindings.\n */\n hasHostBindings = 0x80,\n}\n\n/**\n * Corresponds to the TNode.providerIndexes property.\n */\nexport const enum TNodeProviderIndexes {\n /** The index of the first provider on this node is encoded on the least significant bits. */\n ProvidersStartIndexMask = 0b00000000000011111111111111111111,\n\n /**\n * The count of view providers from the component on this node is\n * encoded on the 20 most significant bits.\n */\n CptViewProvidersCountShift = 20,\n CptViewProvidersCountShifter = 0b00000000000100000000000000000000,\n}\n\n/**\n * A set of marker values to be used in the attributes arrays. These markers indicate that some\n * items are not regular attributes and the processing should be adapted accordingly.\n */\nexport const enum AttributeMarker {\n /**\n * An implicit marker which indicates that the value in the array are of `attributeKey`,\n * `attributeValue` format.\n *\n * NOTE: This is implicit as it is the type when no marker is present in array. We indicate that\n * it should not be present at runtime by the negative number.\n */\n ImplicitAttributes = -1,\n\n /**\n * Marker indicates that the following 3 values in the attributes array are:\n * namespaceUri, attributeName, attributeValue\n * in that order.\n */\n NamespaceURI = 0,\n\n /**\n * Signals class declaration.\n *\n * Each value following `Classes` designates a class name to include on the element.\n * ## Example:\n *\n * Given:\n * ```\n *
...\n * ```\n *\n * the generated code is:\n * ```\n * var _c1 = [AttributeMarker.Classes, 'foo', 'bar', 'baz'];\n * ```\n */\n Classes = 1,\n\n /**\n * Signals style declaration.\n *\n * Each pair of values following `Styles` designates a style name and value to include on the\n * element.\n * ## Example:\n *\n * Given:\n * ```\n *
...
\n * ```\n *\n * the generated code is:\n * ```\n * var _c1 = [AttributeMarker.Styles, 'width', '100px', 'height'. '200px', 'color', 'red'];\n * ```\n */\n Styles = 2,\n\n /**\n * Signals that the following attribute names were extracted from input or output bindings.\n *\n * For example, given the following HTML:\n *\n * ```\n *
\n * ```\n *\n * the generated code is:\n *\n * ```\n * var _c1 = ['moo', 'car', AttributeMarker.Bindings, 'foo', 'bar'];\n * ```\n */\n Bindings = 3,\n\n /**\n * Signals that the following attribute names were hoisted from an inline-template declaration.\n *\n * For example, given the following HTML:\n *\n * ```\n *
\n * ```\n *\n * the generated code for the `template()` instruction would include:\n *\n * ```\n * ['dirA', '', AttributeMarker.Bindings, 'dirB', AttributeMarker.Template, 'ngFor', 'ngForOf',\n * 'ngForTrackBy', 'let-value']\n * ```\n *\n * while the generated code for the `element()` instruction inside the template function would\n * include:\n *\n * ```\n * ['dirA', '', AttributeMarker.Bindings, 'dirB']\n * ```\n */\n Template = 4,\n\n /**\n * Signals that the following attribute is `ngProjectAs` and its value is a parsed\n * `CssSelector`.\n *\n * For example, given the following HTML:\n *\n * ```\n *

\n * ```\n *\n * the generated code for the `element()` instruction would include:\n *\n * ```\n * ['attr', 'value', AttributeMarker.ProjectAs, ['', 'title', '']]\n * ```\n */\n ProjectAs = 5,\n\n /**\n * Signals that the following attribute will be translated by runtime i18n\n *\n * For example, given the following HTML:\n *\n * ```\n *
\n * ```\n *\n * the generated code is:\n *\n * ```\n * var _c1 = ['moo', 'car', AttributeMarker.I18n, 'foo', 'bar'];\n */\n I18n = 6,\n}\n\n/**\n * A combination of:\n * - Attribute names and values.\n * - Special markers acting as flags to alter attributes processing.\n * - Parsed ngProjectAs selectors.\n */\nexport type TAttributes = (string|AttributeMarker|CssSelector)[];\n\n/**\n * Constants that are associated with a view. Includes:\n * - Attribute arrays.\n * - Local definition arrays.\n * - Translated messages (i18n).\n */\nexport type TConstants = (TAttributes|string)[];\n\n/**\n * Factory function that returns an array of consts. Consts can be represented as a function in\n * case any additional statements are required to define consts in the list. An example is i18n\n * where additional i18n calls are generated, which should be executed when consts are requested\n * for the first time.\n */\nexport type TConstantsFactory = () => TConstants;\n\n/**\n * TConstants type that describes how the `consts` field is generated on ComponentDef: it can be\n * either an array or a factory function that returns that array.\n */\nexport type TConstantsOrFactory = TConstants|TConstantsFactory;\n\n/**\n * Binding data (flyweight) for a particular node that is shared between all templates\n * of a specific type.\n *\n * If a property is:\n * - PropertyAliases: that property's data was generated and this is it\n * - Null: that property's data was already generated and nothing was found.\n * - Undefined: that property's data has not yet been generated\n *\n * see: https://en.wikipedia.org/wiki/Flyweight_pattern for more on the Flyweight pattern\n */\nexport interface TNode {\n /** The type of the TNode. See TNodeType. */\n type: TNodeType;\n\n /**\n * Index of the TNode in TView.data and corresponding native element in LView.\n *\n * This is necessary to get from any TNode to its corresponding native element when\n * traversing the node tree.\n *\n * If index is -1, this is a dynamically created container node or embedded view node.\n */\n index: number;\n\n /**\n * Insert before existing DOM node index.\n *\n * When DOM nodes are being inserted, normally they are being appended as they are created.\n * Under i18n case, the translated text nodes are created ahead of time as part of the\n * `ɵɵi18nStart` instruction which means that this `TNode` can't just be appended and instead\n * needs to be inserted using `insertBeforeIndex` semantics.\n *\n * Additionally sometimes it is necessary to insert new text nodes as a child of this `TNode`. In\n * such a case the value stores an array of text nodes to insert.\n *\n * Example:\n * ```\n *
\n * Hello World!\n *
\n * ```\n * In the above example the `ɵɵi18nStart` instruction can create `Hello `, `World` and `!` text\n * nodes. It can also insert `Hello ` and `!` text node as a child of `
`, but it can't\n * insert `World` because the `` node has not yet been created. In such a case the\n * `` `TNode` will have an array which will direct the `` to not only insert\n * itself in front of `!` but also to insert the `World` (created by `ɵɵi18nStart`) into\n * `` itself.\n *\n * Pseudo code:\n * ```\n * if (insertBeforeIndex === null) {\n * // append as normal\n * } else if (Array.isArray(insertBeforeIndex)) {\n * // First insert current `TNode` at correct location\n * const currentNode = lView[this.index];\n * parentNode.insertBefore(currentNode, lView[this.insertBeforeIndex[0]]);\n * // Now append all of the children\n * for(let i=1; i`\n * - a component is referenced, ex.: ``\n * - a directive is referenced, ex.: ``.\n *\n * A given element might have different local names and those names can be associated\n * with a directive. We store local names at even indexes while odd indexes are reserved\n * for directive index in a view (or `-1` if there is no associated directive).\n *\n * Some examples:\n * - `
` => `[\"foo\", -1]`\n * - `` => `[\"foo\", myCmptIdx]`\n * - `` => `[\"foo\", myCmptIdx, \"bar\", directiveIdx]`\n * - `
` => `[\"foo\", -1, \"bar\", directiveIdx]`\n */\n localNames: (string|number)[]|null;\n\n /** Information about input properties that need to be set once from attribute data. */\n initialInputs: InitialInputData|null|undefined;\n\n /**\n * Input data for all directives on this node. `null` means that there are no directives with\n * inputs on this node.\n */\n inputs: PropertyAliases|null;\n\n /**\n * Output data for all directives on this node. `null` means that there are no directives with\n * outputs on this node.\n */\n outputs: PropertyAliases|null;\n\n /**\n * The TView or TViews attached to this node.\n *\n * If this TNode corresponds to an LContainer with inline views, the container will\n * need to store separate static data for each of its view blocks (TView[]). Otherwise,\n * nodes in inline views with the same index as nodes in their parent views will overwrite\n * each other, as they are in the same template.\n *\n * Each index in this array corresponds to the static data for a certain\n * view. So if you had V(0) and V(1) in a container, you might have:\n *\n * [\n * [{tagName: 'div', attrs: ...}, null], // V(0) TView\n * [{tagName: 'button', attrs ...}, null] // V(1) TView\n *\n * If this TNode corresponds to an LContainer with a template (e.g. structural\n * directive), the template's TView will be stored here.\n *\n * If this TNode corresponds to an element, tViews will be null .\n */\n tViews: TView|TView[]|null;\n\n /**\n * The next sibling node. Necessary so we can propagate through the root nodes of a view\n * to insert them or remove them from the DOM.\n */\n next: TNode|null;\n\n /**\n * The next projected sibling. Since in Angular content projection works on the node-by-node\n * basis the act of projecting nodes might change nodes relationship at the insertion point\n * (target view). At the same time we need to keep initial relationship between nodes as\n * expressed in content view.\n */\n projectionNext: TNode|null;\n\n /**\n * First child of the current node.\n *\n * For component nodes, the child will always be a ContentChild (in same view).\n * For embedded view nodes, the child will be in their child view.\n */\n child: TNode|null;\n\n /**\n * Parent node (in the same view only).\n *\n * We need a reference to a node's parent so we can append the node to its parent's native\n * element at the appropriate time.\n *\n * If the parent would be in a different view (e.g. component host), this property will be null.\n * It's important that we don't try to cross component boundaries when retrieving the parent\n * because the parent will change (e.g. index, attrs) depending on where the component was\n * used (and thus shouldn't be stored on TNode). In these cases, we retrieve the parent through\n * LView.node instead (which will be instance-specific).\n *\n * If this is an inline view node (V), the parent will be its container.\n */\n parent: TElementNode|TContainerNode|null;\n\n /**\n * List of projected TNodes for a given component host element OR index into the said nodes.\n *\n * For easier discussion assume this example:\n * ``'s view definition:\n * ```\n * content1\n * content2\n * ```\n * ``'s view definition:\n * ```\n * \n * ```\n *\n * If `Array.isArray(projection)` then `TNode` is a host element:\n * - `projection` stores the content nodes which are to be projected.\n * - The nodes represent categories defined by the selector: For example:\n * `` would represent the heads for ``\n * and `` respectively.\n * - The nodes we store in `projection` are heads only, we used `.next` to get their\n * siblings.\n * - The nodes `.next` is sorted/rewritten as part of the projection setup.\n * - `projection` size is equal to the number of projections ``. The size of\n * `c1` will be `1` because `` has only one ``.\n * - we store `projection` with the host (`c1`, `c2`) rather than the `` (`cont1`)\n * because the same component (``) can be used in multiple locations (`c1`, `c2`) and\n * as a result have different set of nodes to project.\n * - without `projection` it would be difficult to efficiently traverse nodes to be projected.\n *\n * If `typeof projection == 'number'` then `TNode` is a `` element:\n * - `projection` is an index of the host's `projection`Nodes.\n * - This would return the first head node to project:\n * `getHost(currentTNode).projection[currentTNode.projection]`.\n * - When projecting nodes the parent node retrieved may be a `` node, in which case\n * the process is recursive in nature.\n *\n * If `projection` is of type `RNode[][]` than we have a collection of native nodes passed as\n * projectable nodes during dynamic component creation.\n */\n projection: (TNode|RNode[])[]|number|null;\n\n /**\n * A collection of all `style` static values for an element (including from host).\n *\n * This field will be populated if and when:\n *\n * - There are one or more initial `style`s on an element (e.g. `
`)\n * - There are one or more initial `style`s on a directive/component host\n * (e.g. `@Directive({host: {style: \"width:200px;\" } }`)\n */\n styles: string|null;\n\n\n /**\n * A collection of all `style` static values for an element excluding host sources.\n *\n * Populated when there are one or more initial `style`s on an element\n * (e.g. `
`)\n * Must be stored separately from `tNode.styles` to facilitate setting directive\n * inputs that shadow the `style` property. If we used `tNode.styles` as is for shadowed inputs,\n * we would feed host styles back into directives as \"inputs\". If we used `tNode.attrs`, we\n * would have to concatenate the attributes on every template pass. Instead, we process once on\n * first create pass and store here.\n */\n stylesWithoutHost: string|null;\n\n /**\n * A `KeyValueArray` version of residual `styles`.\n *\n * When there are styling instructions than each instruction stores the static styling\n * which is of lower priority than itself. This means that there may be a higher priority\n * styling than the instruction.\n *\n * Imagine:\n * ```\n *
\n *\n * @Directive({\n * host: {\n * style: 'color: lowest; ',\n * '[styles.color]': 'exp' // ɵɵstyleProp('color', ctx.exp);\n * }\n * })\n * ```\n *\n * In the above case:\n * - `color: lowest` is stored with `ɵɵstyleProp('color', ctx.exp);` instruction\n * - `color: highest` is the residual and is stored here.\n *\n * - `undefined': not initialized.\n * - `null`: initialized but `styles` is `null`\n * - `KeyValueArray`: parsed version of `styles`.\n */\n residualStyles: KeyValueArray|undefined|null;\n\n /**\n * A collection of all class static values for an element (including from host).\n *\n * This field will be populated if and when:\n *\n * - There are one or more initial classes on an element (e.g. `
`)\n * - There are one or more initial classes on an directive/component host\n * (e.g. `@Directive({host: {class: \"SOME_CLASS\" } }`)\n */\n classes: string|null;\n\n /**\n * A collection of all class static values for an element excluding host sources.\n *\n * Populated when there are one or more initial classes on an element\n * (e.g. `
`)\n * Must be stored separately from `tNode.classes` to facilitate setting directive\n * inputs that shadow the `class` property. If we used `tNode.classes` as is for shadowed\n * inputs, we would feed host classes back into directives as \"inputs\". If we used\n * `tNode.attrs`, we would have to concatenate the attributes on every template pass. Instead,\n * we process once on first create pass and store here.\n */\n classesWithoutHost: string|null;\n\n /**\n * A `KeyValueArray` version of residual `classes`.\n *\n * Same as `TNode.residualStyles` but for classes.\n *\n * - `undefined': not initialized.\n * - `null`: initialized but `classes` is `null`\n * - `KeyValueArray`: parsed version of `classes`.\n */\n residualClasses: KeyValueArray|undefined|null;\n\n /**\n * Stores the head/tail index of the class bindings.\n *\n * - If no bindings, the head and tail will both be 0.\n * - If there are template bindings, stores the head/tail of the class bindings in the template.\n * - If no template bindings but there are host bindings, the head value will point to the last\n * host binding for \"class\" (not the head of the linked list), tail will be 0.\n *\n * See: `style_binding_list.ts` for details.\n *\n * This is used by `insertTStylingBinding` to know where the next styling binding should be\n * inserted so that they can be sorted in priority order.\n */\n classBindings: TStylingRange;\n\n /**\n * Stores the head/tail index of the class bindings.\n *\n * - If no bindings, the head and tail will both be 0.\n * - If there are template bindings, stores the head/tail of the style bindings in the template.\n * - If no template bindings but there are host bindings, the head value will point to the last\n * host binding for \"style\" (not the head of the linked list), tail will be 0.\n *\n * See: `style_binding_list.ts` for details.\n *\n * This is used by `insertTStylingBinding` to know where the next styling binding should be\n * inserted so that they can be sorted in priority order.\n */\n styleBindings: TStylingRange;\n}\n\n/**\n * See `TNode.insertBeforeIndex`\n */\nexport type InsertBeforeIndex = null|number|number[];\n\n/** Static data for an element */\nexport interface TElementNode extends TNode {\n /** Index in the data[] array */\n index: number;\n child: TElementNode|TTextNode|TElementContainerNode|TContainerNode|TProjectionNode|null;\n /**\n * Element nodes will have parents unless they are the first node of a component or\n * embedded view (which means their parent is in a different view and must be\n * retrieved using viewData[HOST_NODE]).\n */\n parent: TElementNode|TElementContainerNode|null;\n tViews: null;\n\n /**\n * If this is a component TNode with projection, this will be an array of projected\n * TNodes or native nodes (see TNode.projection for more info). If it's a regular element node\n * or a component without projection, it will be null.\n */\n projection: (TNode|RNode[])[]|null;\n\n /**\n * Stores TagName\n */\n value: string;\n}\n\n/** Static data for a text node */\nexport interface TTextNode extends TNode {\n /** Index in the data[] array */\n index: number;\n child: null;\n /**\n * Text nodes will have parents unless they are the first node of a component or\n * embedded view (which means their parent is in a different view and must be\n * retrieved using LView.node).\n */\n parent: TElementNode|TElementContainerNode|null;\n tViews: null;\n projection: null;\n}\n\n/** Static data for an LContainer */\nexport interface TContainerNode extends TNode {\n /**\n * Index in the data[] array.\n *\n * If it's -1, this is a dynamically created container node that isn't stored in\n * data[] (e.g. when you inject ViewContainerRef) .\n */\n index: number;\n child: null;\n\n /**\n * Container nodes will have parents unless:\n *\n * - They are the first node of a component or embedded view\n * - They are dynamically created\n */\n parent: TElementNode|TElementContainerNode|null;\n tViews: TView|TView[]|null;\n projection: null;\n value: null;\n}\n\n/** Static data for an */\nexport interface TElementContainerNode extends TNode {\n /** Index in the LView[] array. */\n index: number;\n child: TElementNode|TTextNode|TContainerNode|TElementContainerNode|TProjectionNode|null;\n parent: TElementNode|TElementContainerNode|null;\n tViews: null;\n projection: null;\n}\n\n/** Static data for an ICU expression */\nexport interface TIcuContainerNode extends TNode {\n /** Index in the LView[] array. */\n index: number;\n child: null;\n parent: TElementNode|TElementContainerNode|null;\n tViews: null;\n projection: null;\n value: TIcu;\n}\n\n/** Static data for an LProjectionNode */\nexport interface TProjectionNode extends TNode {\n /** Index in the data[] array */\n child: null;\n /**\n * Projection nodes will have parents unless they are the first node of a component\n * or embedded view (which means their parent is in a different view and must be\n * retrieved using LView.node).\n */\n parent: TElementNode|TElementContainerNode|null;\n tViews: null;\n\n /** Index of the projection node. (See TNode.projection for more info.) */\n projection: number;\n value: null;\n}\n\n/**\n * A union type representing all TNode types that can host a directive.\n */\nexport type TDirectiveHostNode = TElementNode|TContainerNode|TElementContainerNode;\n\n/**\n * This mapping is necessary so we can set input properties and output listeners\n * properly at runtime when property names are minified or aliased.\n *\n * Key: unminified / public input or output name\n * Value: array containing minified / internal name and related directive index\n *\n * The value must be an array to support inputs and outputs with the same name\n * on the same node.\n */\nexport type PropertyAliases = {\n // This uses an object map because using the Map type would be too slow\n [key: string]: PropertyAliasValue\n};\n\n/**\n * Store the runtime input or output names for all the directives.\n *\n * i+0: directive instance index\n * i+1: privateName\n *\n * e.g. [0, 'change-minified']\n */\nexport type PropertyAliasValue = (number|string)[];\n\n/**\n * This array contains information about input properties that\n * need to be set once from attribute data. It's ordered by\n * directive index (relative to element) so it's simple to\n * look up a specific directive's initial input data.\n *\n * Within each sub-array:\n *\n * i+0: attribute name\n * i+1: minified/internal input name\n * i+2: initial value\n *\n * If a directive on a node does not have any input properties\n * that should be set from attributes, its index is set to null\n * to avoid a sparse array.\n *\n * e.g. [null, ['role-min', 'minified-input', 'button']]\n */\nexport type InitialInputData = (InitialInputs|null)[];\n\n/**\n * Used by InitialInputData to store input properties\n * that should be set once from attributes.\n *\n * i+0: attribute name\n * i+1: minified/internal input name\n * i+2: initial value\n *\n * e.g. ['role-min', 'minified-input', 'button']\n */\nexport type InitialInputs = string[];\n\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\nexport const unusedValueExportToPlacateAjd = 1;\n\n/**\n * Type representing a set of TNodes that can have local refs (`#foo`) placed on them.\n */\nexport type TNodeWithLocalRefs = TContainerNode|TElementNode|TElementContainerNode;\n\n/**\n * Type for a function that extracts a value for a local refs.\n * Example:\n * - `
` - `nativeDivEl` should point to the native `
` element;\n * - `` - `tplRef` should point to the `TemplateRef` instance;\n */\nexport type LocalRefExtractor = (tNode: TNodeWithLocalRefs, currentView: LView) => any;\n\n/**\n * Returns `true` if the `TNode` has a directive which has `@Input()` for `class` binding.\n *\n * ```\n *
\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 */\nexport function hasClassInput(tNode: TNode) {\n return (tNode.flags & TNodeFlags.hasClassInput) !== 0;\n}\n\n/**\n * Returns `true` if the `TNode` has a directive which has `@Input()` for `style` binding.\n *\n * ```\n *
\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 */\nexport function hasStyleInput(tNode: TNode) {\n return (tNode.flags & TNodeFlags.hasStyleInput) !== 0;\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\nimport {assertDefined, throwError} from '../util/assert';\nimport {TNode, TNodeType, toTNodeTypeAsString} from './interfaces/node';\n\nexport function assertTNodeType(\n tNode: TNode|null, expectedTypes: TNodeType, message?: string): void {\n assertDefined(tNode, 'should be called with a TNode');\n if ((tNode.type & expectedTypes) === 0) {\n throwError(\n message ||\n `Expected [${toTNodeTypeAsString(expectedTypes)}] but got ${\n toTNodeTypeAsString(tNode.type)}.`);\n }\n}\n\nexport function assertPureTNodeType(type: TNodeType) {\n if (!(type === TNodeType.Element || //\n type === TNodeType.Text || //\n type === TNodeType.Container || //\n type === TNodeType.ElementContainer || //\n type === TNodeType.Icu || //\n type === TNodeType.Projection || //\n type === TNodeType.Placeholder)) {\n throwError(`Expected TNodeType to have only a single type selected, but got ${\n toTNodeTypeAsString(type)}.`);\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 */\nimport {CharCode} from '../../util/char_code';\nimport {AttributeMarker, TAttributes} from '../interfaces/node';\nimport {CssSelector} from '../interfaces/projection';\nimport {isProceduralRenderer, ProceduralRenderer3, Renderer3} from '../interfaces/renderer';\nimport {RElement} from '../interfaces/renderer_dom';\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 */\nexport function setUpAttributes(renderer: Renderer3, native: RElement, attrs: TAttributes): number {\n const isProc = isProceduralRenderer(renderer);\n\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 !== AttributeMarker.NamespaceURI) {\n break;\n }\n\n // we just landed on the marker value ... therefore\n // we should skip to the next entry\n i++;\n\n const namespaceURI = attrs[i++] as string;\n const attrName = attrs[i++] as string;\n const attrVal = attrs[i++] as string;\n ngDevMode && ngDevMode.rendererSetAttribute++;\n isProc ?\n (renderer as ProceduralRenderer3).setAttribute(native, attrName, attrVal, namespaceURI) :\n native.setAttributeNS(namespaceURI, attrName, attrVal);\n } else {\n // attrName is string;\n const attrName = value as string;\n const attrVal = attrs[++i];\n // Standard attributes\n ngDevMode && ngDevMode.rendererSetAttribute++;\n if (isAnimationProp(attrName)) {\n if (isProc) {\n (renderer as ProceduralRenderer3).setProperty(native, attrName, attrVal);\n }\n } else {\n isProc ?\n (renderer as ProceduralRenderer3).setAttribute(native, attrName, attrVal as string) :\n native.setAttribute(attrName, attrVal as string);\n }\n i++;\n }\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/**\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 */\nexport function isNameOnlyAttributeMarker(marker: string|AttributeMarker|CssSelector) {\n return marker === AttributeMarker.Bindings || marker === AttributeMarker.Template ||\n marker === AttributeMarker.I18n;\n}\n\nexport function isAnimationProp(name: string): boolean {\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) === CharCode.AT_SIGN;\n}\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 */\nexport function mergeHostAttrs(dst: TAttributes|null, src: TAttributes|null): TAttributes|null {\n if (src === null || src.length === 0) {\n // do nothing\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 } else {\n let srcMarker: AttributeMarker = 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 } else {\n if (srcMarker === AttributeMarker.NamespaceURI) {\n // Case where we need to consume `key1`, `key2`, `value` items.\n } else if (\n srcMarker === AttributeMarker.ImplicitAttributes ||\n srcMarker === AttributeMarker.Styles) {\n // Case where we have to consume `key1` and `value` only.\n mergeHostAttribute(dst, srcMarker, item as string, null, src[++i] as string);\n } else {\n // Case where we have to consume `key1` only.\n mergeHostAttribute(dst, srcMarker, item as string, null, null);\n }\n }\n }\n }\n return dst;\n}\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 */\nexport function mergeHostAttribute(\n dst: TAttributes, marker: AttributeMarker, key1: string, key2: string|null,\n value: string|null): void {\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 === AttributeMarker.ImplicitAttributes) {\n markerInsertPosition = -1;\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 } 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\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 } 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 } else if (key2 === dst[i + 1]) {\n dst[i + 2] = value!;\n return;\n }\n }\n // Increment counter.\n i++;\n if (key2 !== null) i++;\n if (value !== null) i++;\n }\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 * @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\nimport {assertGreaterThan, assertNotEqual, assertNumber} from '../../util/assert';\nimport {NO_PARENT_INJECTOR, RelativeInjectorLocation, RelativeInjectorLocationFlags} from '../interfaces/injector';\nimport {DECLARATION_VIEW, HEADER_OFFSET, LView} from '../interfaces/view';\n\n\n/// Parent Injector Utils ///////////////////////////////////////////////////////////////\nexport function hasParentInjector(parentLocation: RelativeInjectorLocation): boolean {\n return parentLocation !== NO_PARENT_INJECTOR;\n}\n\nexport function getParentInjectorIndex(parentLocation: RelativeInjectorLocation): number {\n ngDevMode && assertNumber(parentLocation, 'Number expected');\n ngDevMode && assertNotEqual(parentLocation as any, -1, 'Not a valid state.');\n const parentInjectorIndex =\n (parentLocation as any as number) & RelativeInjectorLocationFlags.InjectorIndexMask;\n ngDevMode &&\n assertGreaterThan(\n parentInjectorIndex, HEADER_OFFSET,\n 'Parent injector must be pointing past HEADER_OFFSET.');\n return (parentLocation as any as number) & RelativeInjectorLocationFlags.InjectorIndexMask;\n}\n\nexport function getParentInjectorViewOffset(parentLocation: RelativeInjectorLocation): number {\n return (parentLocation as any as number) >> RelativeInjectorLocationFlags.ViewOffsetShift;\n}\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 */\nexport function getParentInjectorView(location: RelativeInjectorLocation, startView: LView): LView {\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 // 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 * @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\nimport {isForwardRef, resolveForwardRef} from '../di/forward_ref';\nimport {injectRootLimpMode, setInjectImplementation} from '../di/inject_switch';\nimport {Injector} from '../di/injector';\nimport {InjectorMarkers} from '../di/injector_marker';\nimport {InjectFlags} from '../di/interface/injector';\nimport {ProviderToken} from '../di/provider_token';\nimport {Type} from '../interface/type';\nimport {assertDefined, assertEqual, assertIndexInRange} from '../util/assert';\nimport {noSideEffects} from '../util/closure';\n\nimport {assertDirectiveDef, assertNodeInjector, assertTNodeForLView} from './assert';\nimport {FactoryFn, getFactoryDef} from './definition_factory';\nimport {throwCyclicDependencyError, throwProviderNotFoundError} from './errors_di';\nimport {NG_ELEMENT_ID, NG_FACTORY_DEF} from './fields';\nimport {registerPreOrderHooks} from './hooks';\nimport {DirectiveDef} from './interfaces/definition';\nimport {isFactory, NO_PARENT_INJECTOR, NodeInjectorFactory, NodeInjectorOffset, RelativeInjectorLocation, RelativeInjectorLocationFlags} from './interfaces/injector';\nimport {AttributeMarker, TContainerNode, TDirectiveHostNode, TElementContainerNode, TElementNode, TNode, TNodeProviderIndexes, TNodeType} from './interfaces/node';\nimport {isComponentDef, isComponentHost} from './interfaces/type_checks';\nimport {DECLARATION_COMPONENT_VIEW, DECLARATION_VIEW, INJECTOR, LView, T_HOST, TData, TVIEW, TView, TViewType} from './interfaces/view';\nimport {assertTNodeType} from './node_assert';\nimport {enterDI, getCurrentTNode, getLView, leaveDI} from './state';\nimport {isNameOnlyAttributeMarker} from './util/attrs_utils';\nimport {getParentInjectorIndex, getParentInjectorView, hasParentInjector} from './util/injector_utils';\nimport {stringifyForError} from './util/stringify_utils';\n\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;\n\nexport function setIncludeViewProviders(v: boolean): boolean {\n const oldValue = includeViewProviders;\n includeViewProviders = v;\n return oldValue;\n}\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/**\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\n/** Counter used to generate unique IDs for directives. */\nlet nextNgElementId = 0;\n\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 */\nexport function bloomAdd(\n injectorIndex: number, tView: TView, type: ProviderToken|string): void {\n ngDevMode && assertEqual(tView.firstCreatePass, true, 'expected firstCreatePass to be true');\n let id: number|undefined;\n if (typeof type === 'string') {\n id = type.charCodeAt(0) || 0;\n } else if (type.hasOwnProperty(NG_ELEMENT_ID)) {\n id = (type as any)[NG_ELEMENT_ID];\n }\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 as any)[NG_ELEMENT_ID] = nextNgElementId++;\n }\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\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\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 as number[])[injectorIndex + (bloomHash >> BLOOM_BUCKET_BITS)] |= mask;\n}\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 */\nexport function getOrCreateNodeInjectorForNode(\n tNode: TElementNode|TContainerNode|TElementContainerNode, lView: LView): number {\n const existingInjectorIndex = getInjectorIndex(tNode, lView);\n if (existingInjectorIndex !== -1) {\n return existingInjectorIndex;\n }\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\n const parentLoc = getParentInjectorLocation(tNode, lView);\n const injectorIndex = tNode.injectorIndex;\n\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 as any;\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 < NodeInjectorOffset.BLOOM_SIZE; i++) {\n lView[injectorIndex + i] = parentLView[parentIndex + i] | parentData[parentIndex + i];\n }\n }\n\n lView[injectorIndex + NodeInjectorOffset.PARENT] = parentLoc;\n return injectorIndex;\n}\n\nfunction insertBloom(arr: any[], footer: TNode|null): void {\n arr.push(0, 0, 0, 0, 0, 0, 0, 0, footer);\n}\n\n\nexport function getInjectorIndex(tNode: TNode, lView: LView): number {\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 + NodeInjectorOffset.PARENT] === null) {\n return -1;\n } else {\n ngDevMode && assertIndexInRange(lView, tNode.injectorIndex);\n return tNode.injectorIndex;\n }\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 */\nexport function getParentInjectorLocation(tNode: TNode, lView: LView): RelativeInjectorLocation {\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 as any; // ViewOffset is 0\n }\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: TNode|null = null;\n let lViewCursor: LView|null = lView;\n\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 // First determine the `parentTNode` location. The parent pointer differs based on `TView.type`.\n const tView = lViewCursor[TVIEW];\n const tViewType = tView.type;\n if (tViewType === TViewType.Embedded) {\n ngDevMode &&\n assertDefined(tView.declTNode, 'Embedded TNodes should have declaration parents.');\n parentTNode = tView.declTNode;\n } else if (tViewType === 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 parentTNode = lViewCursor[T_HOST];\n } else {\n ngDevMode && assertEqual(tView.type, TViewType.Root, 'Root type expected');\n parentTNode = null;\n }\n if (parentTNode === null) {\n // If we have no parent, than we are done.\n return NO_PARENT_INJECTOR;\n }\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\n if (parentTNode.injectorIndex !== -1) {\n // We found a NodeInjector which points to something.\n return (parentTNode.injectorIndex |\n (declarationViewOffset << RelativeInjectorLocationFlags.ViewOffsetShift)) as any;\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 */\nexport function diPublicInInjector(\n injectorIndex: number, tView: TView, token: ProviderToken): void {\n bloomAdd(injectorIndex, tView, token);\n}\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 * \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 */\nexport function injectAttributeImpl(tNode: TNode, attrNameToInject: string): string|null {\n ngDevMode && assertTNodeType(tNode, TNodeType.AnyContainer | 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\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\n // If we hit a `Bindings` or `Template` marker then we are done.\n if (isNameOnlyAttributeMarker(value)) break;\n\n // Skip namespaced attributes\n if (value === 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 } 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 } else if (value === attrNameToInject) {\n return attrs[i + 1] as string;\n } else {\n i = i + 2;\n }\n }\n }\n return null;\n}\n\n\nfunction notFoundValueOrThrow(\n notFoundValue: T|null, token: ProviderToken, flags: InjectFlags): T|null {\n if (flags & InjectFlags.Optional) {\n return notFoundValue;\n } else {\n throwProviderNotFoundError(token, 'NodeInjector');\n }\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(\n lView: LView, token: ProviderToken, flags: InjectFlags, notFoundValue?: any): T|null {\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\n if ((flags & (InjectFlags.Self | InjectFlags.Host)) === 0) {\n const moduleInjector = lView[INJECTOR];\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 } else {\n return injectRootLimpMode(token, notFoundValue, flags & InjectFlags.Optional);\n }\n } finally {\n setInjectImplementation(previousInjectImplementation);\n }\n }\n return notFoundValueOrThrow(notFoundValue, token, flags);\n}\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 */\nexport function getOrCreateInjectable(\n tNode: TDirectiveHostNode|null, lView: LView, token: ProviderToken,\n flags: InjectFlags = InjectFlags.Default, notFoundValue?: any): T|null {\n if (tNode !== null) {\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 } else {\n return value;\n }\n } finally {\n leaveDI();\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: TView|null = null;\n let injectorIndex = getInjectorIndex(tNode, lView);\n let parentLocation: RelativeInjectorLocation = NO_PARENT_INJECTOR;\n let hostTElementNode: TNode|null =\n flags & InjectFlags.Host ? lView[DECLARATION_COMPONENT_VIEW][T_HOST] : null;\n\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 + NodeInjectorOffset.PARENT];\n\n if (parentLocation === NO_PARENT_INJECTOR || !shouldSearchParent(flags, false)) {\n injectorIndex = -1;\n } else {\n previousTView = lView[TVIEW];\n injectorIndex = getParentInjectorIndex(parentLocation);\n lView = getParentInjectorView(parentLocation, lView);\n }\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\n // Check the current injector. If it matches, see if it contains token.\n const tView = lView[TVIEW];\n ngDevMode &&\n assertTNodeForLView(\n tView.data[injectorIndex + NodeInjectorOffset.TNODE] as 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: T|null = searchTokensOnInjector(\n injectorIndex, lView, token, previousTView, flags, hostTElementNode);\n if (instance !== NOT_FOUND) {\n return instance;\n }\n }\n parentLocation = lView[injectorIndex + NodeInjectorOffset.PARENT];\n if (parentLocation !== NO_PARENT_INJECTOR &&\n shouldSearchParent(\n flags,\n lView[TVIEW].data[injectorIndex + 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 } 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 }\n\n return lookupTokenUsingModuleInjector(lView, token, flags, notFoundValue);\n}\n\nconst NOT_FOUND = {};\n\nexport function createNodeInjector(): Injector {\n return new NodeInjector(getCurrentTNode()! as TDirectiveHostNode, getLView()) as any;\n}\n\nfunction searchTokensOnInjector(\n injectorIndex: number, lView: LView, token: ProviderToken, previousTView: TView|null,\n flags: InjectFlags, hostTElementNode: TNode|null) {\n const currentTView = lView[TVIEW];\n const tNode = currentTView.data[injectorIndex + NodeInjectorOffset.TNODE] as 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 & TNodeType.AnyRNode) !== 0));\n\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\n const injectableIdx = locateDirectiveOrProvider(\n tNode, currentTView, token, canAccessViewProviders, isHostSpecialCase);\n if (injectableIdx !== null) {\n return getNodeInjectable(lView, currentTView, injectableIdx, tNode as TElementNode);\n } else {\n return NOT_FOUND;\n }\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 */\nexport function locateDirectiveOrProvider(\n tNode: TNode, tView: TView, token: ProviderToken|string, canAccessViewProviders: boolean,\n isHostSpecialCase: boolean|number): number|null {\n const nodeProviderIndexes = tNode.providerIndexes;\n const tInjectables = tView.data;\n\n const injectablesStart = nodeProviderIndexes & TNodeProviderIndexes.ProvidersStartIndexMask;\n const directivesStart = tNode.directiveStart;\n const directiveEnd = tNode.directiveEnd;\n const cptViewProvidersCount =\n nodeProviderIndexes >> TNodeProviderIndexes.CptViewProvidersCountShift;\n const startingIndex =\n 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] as ProviderToken| DirectiveDef| string;\n if (i < directivesStart && token === providerTokenOrDef ||\n i >= directivesStart && (providerTokenOrDef as DirectiveDef).type === token) {\n return i;\n }\n }\n if (isHostSpecialCase) {\n const dirDef = tInjectables[directivesStart] as DirectiveDef;\n if (dirDef && isComponentDef(dirDef) && dirDef.type === token) {\n return directivesStart;\n }\n }\n return null;\n}\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 */\nexport function getNodeInjectable(\n lView: LView, tView: TView, index: number, tNode: TDirectiveHostNode): any {\n let value = lView[index];\n const tData = tView.data;\n if (isFactory(value)) {\n const factory: NodeInjectorFactory = value;\n if (factory.resolving) {\n throwCyclicDependencyError(stringifyForError(tData[index]));\n }\n const previousIncludeViewProviders = setIncludeViewProviders(factory.canSeeViewProviders);\n factory.resolving = true;\n const previousInjectImplementation =\n factory.injectImpl ? setInjectImplementation(factory.injectImpl) : null;\n const success = enterDI(lView, tNode, InjectFlags.Default);\n ngDevMode &&\n assertEqual(\n success, true,\n '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] as DirectiveDef, tView);\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/**\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 */\nexport function bloomHashBitOrFactory(token: ProviderToken|string): number|Function|undefined {\n ngDevMode && assertDefined(token, 'token must be defined');\n if (typeof token === 'string') {\n return token.charCodeAt(0) || 0;\n }\n const tokenId: number|undefined =\n // First check with `hasOwnProperty` so we don't get an inherited ID.\n token.hasOwnProperty(NG_ELEMENT_ID) ? (token as any)[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 } else {\n ngDevMode &&\n assertEqual(tokenId, InjectorMarkers.Injector, 'Expecting to get Special Injector Id');\n return createNodeInjector;\n }\n } else {\n return tokenId;\n }\n}\n\nexport function bloomHasToken(bloomHash: number, injectorIndex: number, injectorView: LView|TData) {\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\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\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\n/** Returns true if flags prevent parent injector from being searched for tokens */\nfunction shouldSearchParent(flags: InjectFlags, isFirstHostTNode: boolean): boolean|number {\n return !(flags & InjectFlags.Self) && !(flags & InjectFlags.Host && isFirstHostTNode);\n}\n\nexport class NodeInjector implements Injector {\n constructor(\n private _tNode: TElementNode|TContainerNode|TElementContainerNode|null,\n private _lView: LView) {}\n\n get(token: any, notFoundValue?: any, flags?: InjectFlags): any {\n return getOrCreateInjectable(this._tNode, this._lView, token, flags, notFoundValue);\n }\n}\n\n/**\n * @codeGenApi\n */\nexport function ɵɵgetInheritedFactory(type: Type): (type: Type) => T {\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\n // Go up the prototype until we hit `Object`.\n while (parent && parent !== objectPrototype) {\n const factory = parent[NG_FACTORY_DEF] || getFactoryOf(parent);\n\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\n parent = Object.getPrototypeOf(parent);\n }\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}\n\nfunction getFactoryOf(type: Type): ((type?: Type) => T | null)|null {\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 * @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 */\nimport {injectAttributeImpl} from '../di';\nimport {getCurrentTNode} from '../state';\n\n/**\n * Facade for the attribute injection from DI.\n *\n * @codeGenApi\n */\nexport function ɵɵinjectAttribute(attrNameToInject: string): string|null {\n return injectAttributeImpl(getCurrentTNode()!, attrNameToInject);\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\nimport {Type} from '../interface/type';\n\nimport {noSideEffects} from './closure';\n\n\n\n/**\n * An interface implemented by all Angular type decorators, which allows them to be used as\n * decorators as well as Angular syntax.\n *\n * ```\n * @ng.Component({...})\n * class MyClass {...}\n * ```\n *\n * @publicApi\n */\nexport interface TypeDecorator {\n /**\n * Invoke as decorator.\n */\n >(type: T): T;\n\n // Make TypeDecorator assignable to built-in ParameterDecorator type.\n // ParameterDecorator is declared in lib.d.ts as a `declare type`\n // so we cannot declare this interface as a subtype.\n // see https://github.com/angular/angular/issues/3379#issuecomment-126169417\n (target: Object, propertyKey?: string|symbol, parameterIndex?: number): void;\n}\n\nexport const ANNOTATIONS = '__annotations__';\nexport const PARAMETERS = '__parameters__';\nexport const PROP_METADATA = '__prop__metadata__';\n\n/**\n * @suppress {globalThis}\n */\nexport function makeDecorator(\n name: string, props?: (...args: any[]) => any, parentClass?: any,\n additionalProcessing?: (type: Type) => void,\n typeFn?: (type: Type, ...args: any[]) => void):\n {new (...args: any[]): any; (...args: any[]): any; (...args: any[]): (cls: any) => any;} {\n return noSideEffects(() => {\n const metaCtor = makeMetadataCtor(props);\n\n function DecoratorFactory(\n this: unknown|typeof DecoratorFactory, ...args: any[]): (cls: Type) => any {\n if (this instanceof DecoratorFactory) {\n metaCtor.call(this, ...args);\n return this as typeof DecoratorFactory;\n }\n\n const annotationInstance = new (DecoratorFactory as any)(...args);\n return function TypeDecorator(cls: Type) {\n if (typeFn) 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 as any)[ANNOTATIONS] :\n (Object.defineProperty(cls, ANNOTATIONS, {value: []}) as any)[ANNOTATIONS];\n annotations.push(annotationInstance);\n\n\n if (additionalProcessing) additionalProcessing(cls);\n\n return cls;\n };\n }\n\n if (parentClass) {\n DecoratorFactory.prototype = Object.create(parentClass.prototype);\n }\n\n DecoratorFactory.prototype.ngMetadataName = name;\n (DecoratorFactory as any).annotationCls = DecoratorFactory;\n return DecoratorFactory as any;\n });\n}\n\nfunction makeMetadataCtor(props?: (...args: any[]) => any): any {\n return function ctor(this: any, ...args: any[]) {\n if (props) {\n const values = props(...args);\n for (const propName in values) {\n this[propName] = values[propName];\n }\n }\n };\n}\n\nexport function makeParamDecorator(\n name: string, props?: (...args: any[]) => any, parentClass?: any): any {\n return noSideEffects(() => {\n const metaCtor = makeMetadataCtor(props);\n function ParamDecoratorFactory(\n this: unknown|typeof ParamDecoratorFactory, ...args: any[]): any {\n if (this instanceof ParamDecoratorFactory) {\n metaCtor.apply(this, args);\n return this;\n }\n const annotationInstance = new (ParamDecoratorFactory)(...args);\n\n (ParamDecorator).annotation = annotationInstance;\n return ParamDecorator;\n\n function ParamDecorator(cls: any, unusedKey: any, index: number): any {\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 as any)[PARAMETERS] :\n Object.defineProperty(cls, PARAMETERS, {value: []})[PARAMETERS];\n\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\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}\n\nexport function makePropDecorator(\n name: string, props?: (...args: any[]) => any, parentClass?: any,\n additionalProcessing?: (target: any, name: string, ...args: any[]) => void): any {\n return noSideEffects(() => {\n const metaCtor = makeMetadataCtor(props);\n\n function PropDecoratorFactory(this: unknown|typeof PropDecoratorFactory, ...args: any[]): any {\n if (this instanceof PropDecoratorFactory) {\n metaCtor.apply(this, args);\n return this;\n }\n\n const decoratorInstance = new (PropDecoratorFactory)(...args);\n\n function PropDecorator(target: any, name: string) {\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 as any)[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\n if (additionalProcessing) additionalProcessing(target, name, ...args);\n }\n\n return PropDecorator;\n }\n\n if (parentClass) {\n PropDecoratorFactory.prototype = Object.create(parentClass.prototype);\n }\n\n PropDecoratorFactory.prototype.ngMetadataName = name;\n (PropDecoratorFactory).annotationCls = PropDecoratorFactory;\n return PropDecoratorFactory;\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\nimport {ɵɵinjectAttribute} from '../render3/instructions/di_attr';\nimport {makeParamDecorator} from '../util/decorators';\n\n\n/**\n * Type of the Attribute decorator / constructor function.\n *\n * @publicApi\n */\nexport interface AttributeDecorator {\n /**\n * Parameter decorator for a directive constructor that designates\n * a host-element attribute whose value is injected as a constant string literal.\n *\n * @usageNotes\n *\n * Suppose we have an `` element and want to know its `type`.\n *\n * ```html\n * \n * ```\n *\n * The following example uses the decorator to inject the string literal `text` in a directive.\n *\n * {@example core/ts/metadata/metadata.ts region='attributeMetadata'}\n *\n * The following example uses the decorator in a component constructor.\n *\n * {@example core/ts/metadata/metadata.ts region='attributeFactory'}\n *\n */\n (name: string): any;\n new(name: string): Attribute;\n}\n\n/**\n * Type of the Attribute metadata.\n *\n * @publicApi\n */\nexport interface Attribute {\n /**\n * The name of the attribute whose value can be injected.\n */\n attributeName: string;\n}\n\nfunction CREATE_ATTRIBUTE_DECORATOR__PRE_R3__(): AttributeDecorator {\n return makeParamDecorator('Attribute', (attributeName?: string) => ({attributeName}));\n}\n\nexport function CREATE_ATTRIBUTE_DECORATOR__POST_R3__(): AttributeDecorator {\n return makeParamDecorator(\n 'Attribute',\n (attributeName?: string) =>\n ({attributeName, __NG_ELEMENT_ID__: () => ɵɵinjectAttribute(attributeName!)}));\n}\n\nconst CREATE_ATTRIBUTE_DECORATOR_IMPL = CREATE_ATTRIBUTE_DECORATOR__PRE_R3__;\n\n/**\n * Attribute decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const Attribute: AttributeDecorator = CREATE_ATTRIBUTE_DECORATOR_IMPL();\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\nimport {Type} from '../interface/type';\nimport {assertLessThan} from '../util/assert';\n\nimport {ɵɵdefineInjectable} from './interface/defs';\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('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`. As\n * mentioned above, `'root'` is the default value for `providedIn`.\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 */\nexport class InjectionToken {\n /** @internal */\n readonly ngMetadataName = 'InjectionToken';\n\n readonly ɵprov: unknown;\n\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(protected _desc: string, options?: {\n providedIn?: Type|'root'|'platform'|'any'|null, factory: () => T\n }) {\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 as any).__NG_ELEMENT_ID__ = options;\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 toString(): string {\n return `InjectionToken ${this._desc}`;\n }\n}\n\nexport interface InjectableDefToken extends InjectionToken {\n ɵprov: unknown;\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\nimport {InjectionToken} from '../di/injection_token';\nimport {ProviderToken} from '../di/provider_token';\nimport {makePropDecorator} from '../util/decorators';\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 */\nexport const ANALYZE_FOR_ENTRY_COMPONENTS = new InjectionToken('AnalyzeForEntryComponents');\n\n/**\n * Type of the `Attribute` decorator / constructor function.\n *\n * @publicApi\n */\nexport interface AttributeDecorator {\n /**\n * Specifies that a constant attribute value should be injected.\n *\n * The directive can inject constant string literals of host element attributes.\n *\n * @usageNotes\n *\n * Suppose we have an `` element and want to know its `type`.\n *\n * ```html\n * \n * ```\n *\n * A decorator can inject string literal `text` as in the following example.\n *\n * {@example core/ts/metadata/metadata.ts region='attributeMetadata'}\n *\n * @publicApi\n */\n (name: string): any;\n new(name: string): Attribute;\n}\n\n\n/**\n * Type of the Attribute metadata.\n *\n * @publicApi\n */\nexport interface Attribute {\n /**\n * The name of the attribute to be injected into the constructor.\n */\n attributeName?: string;\n}\n\n/**\n * Type of the Query metadata.\n *\n * @publicApi\n */\nexport interface Query {\n descendants: boolean;\n emitDistinctChangesOnly: boolean;\n first: boolean;\n read: any;\n isViewQuery: boolean;\n selector: any;\n static?: boolean;\n}\n\n// Stores the default value of `emitDistinctChangesOnly` when the `emitDistinctChangesOnly` is not\n// explicitly set.\nexport const emitDistinctChangesOnlyDefaultValue = true;\n\n\n/**\n * Base class for query metadata.\n *\n * @see `ContentChildren`.\n * @see `ContentChild`.\n * @see `ViewChildren`.\n * @see `ViewChild`.\n *\n * @publicApi\n */\nexport abstract class Query {}\n\n/**\n * Type of the ContentChildren decorator / constructor function.\n *\n * @see `ContentChildren`.\n * @publicApi\n */\nexport interface ContentChildrenDecorator {\n /**\n * @description\n * Property decorator that configures a content query.\n *\n * Use to get the `QueryList` of elements or directives from the content DOM.\n * Any time a child element is added, removed, or moved, the query list will be\n * updated, and the changes observable of the query list will emit a new value.\n *\n * Content queries are set before the `ngAfterContentInit` callback is called.\n *\n * Does not retrieve elements or directives that are in other components' templates,\n * since a component's template is always a black box to its ancestors.\n *\n * **Metadata Properties**:\n *\n * * **selector** - The directive type or the name used for querying.\n * * **descendants** - If `true` include all descendants of the element. If `false` then only\n * query direct children of the element.\n * * **emitDistinctChangesOnly** - The ` QueryList#changes` observable will emit new values only\n * if the QueryList result has changed. When `false` the `changes` observable might emit even\n * if the QueryList has not changed.\n * ** Note: *** This config option is **deprecated**, it will be permanently set to `true` and\n * removed in future versions of Angular.\n * * **read** - Used to read a different token from the queried elements.\n *\n * The following selectors are supported.\n * * Any class with the `@Component` or `@Directive` decorator\n * * A template reference variable as a string (e.g. query ``\n * with `@ContentChildren('cmp')`)\n * * Any provider defined in the child component tree of the current component (e.g.\n * `@ContentChildren(SomeService) someService: SomeService`)\n * * Any provider defined through a string token (e.g. `@ContentChildren('someToken')\n * someTokenVal: any`)\n * * A `TemplateRef` (e.g. query `` with\n * `@ContentChildren(TemplateRef) template;`)\n *\n * In addition, multiple string selectors can be separated with a comma (e.g.\n * `@ContentChildren('cmp1,cmp2')`)\n *\n * The following values are supported by `read`:\n * * Any class with the `@Component` or `@Directive` decorator\n * * Any provider defined on the injector of the component that is matched by the `selector` of\n * this query\n * * Any provider defined through a string token (e.g. `{provide: 'token', useValue: 'val'}`)\n * * `TemplateRef`, `ElementRef`, and `ViewContainerRef`\n *\n * @usageNotes\n *\n * Here is a simple demonstration of how the `ContentChildren` decorator can be used.\n *\n * {@example core/di/ts/contentChildren/content_children_howto.ts region='HowTo'}\n *\n * ### Tab-pane example\n *\n * Here is a slightly more realistic example that shows how `ContentChildren` decorators\n * can be used to implement a tab pane component.\n *\n * {@example core/di/ts/contentChildren/content_children_example.ts region='Component'}\n *\n * @Annotation\n */\n (selector: ProviderToken|Function|string, opts?: {\n descendants?: boolean,\n emitDistinctChangesOnly?: boolean,\n read?: any,\n }): any;\n new(selector: ProviderToken|Function|string,\n opts?: {descendants?: boolean, emitDistinctChangesOnly?: boolean, read?: any}): Query;\n}\n\n/**\n * Type of the ContentChildren metadata.\n *\n *\n * @Annotation\n * @publicApi\n */\nexport type ContentChildren = Query;\n\n/**\n * ContentChildren decorator and metadata.\n *\n *\n * @Annotation\n * @publicApi\n */\nexport const ContentChildren: ContentChildrenDecorator = makePropDecorator(\n 'ContentChildren', (selector?: any, data: any = {}) => ({\n selector,\n first: false,\n isViewQuery: false,\n descendants: false,\n emitDistinctChangesOnly: emitDistinctChangesOnlyDefaultValue,\n ...data\n }),\n Query);\n\n/**\n * Type of the ContentChild decorator / constructor function.\n *\n * @publicApi\n */\nexport interface ContentChildDecorator {\n /**\n * @description\n * Property decorator that configures a content query.\n *\n * Use to get the first element or the directive matching the selector from the content DOM.\n * If the content DOM changes, and a new child matches the selector,\n * the property will be updated.\n *\n * Content queries are set before the `ngAfterContentInit` callback is called.\n *\n * Does not retrieve elements or directives that are in other components' templates,\n * since a component's template is always a black box to its ancestors.\n *\n * **Metadata Properties**:\n *\n * * **selector** - The directive type or the name used for querying.\n * * **read** - Used to read a different token from the queried element.\n * * **static** - True to resolve query results before change detection runs,\n * false to resolve after change detection. Defaults to false.\n *\n * The following selectors are supported.\n * * Any class with the `@Component` or `@Directive` decorator\n * * A template reference variable as a string (e.g. query ``\n * with `@ContentChild('cmp')`)\n * * Any provider defined in the child component tree of the current component (e.g.\n * `@ContentChild(SomeService) someService: SomeService`)\n * * Any provider defined through a string token (e.g. `@ContentChild('someToken') someTokenVal:\n * any`)\n * * A `TemplateRef` (e.g. query `` with `@ContentChild(TemplateRef)\n * template;`)\n *\n * The following values are supported by `read`:\n * * Any class with the `@Component` or `@Directive` decorator\n * * Any provider defined on the injector of the component that is matched by the `selector` of\n * this query\n * * Any provider defined through a string token (e.g. `{provide: 'token', useValue: 'val'}`)\n * * `TemplateRef`, `ElementRef`, and `ViewContainerRef`\n *\n * @usageNotes\n *\n * {@example core/di/ts/contentChild/content_child_howto.ts region='HowTo'}\n *\n * ### Example\n *\n * {@example core/di/ts/contentChild/content_child_example.ts region='Component'}\n *\n * @Annotation\n */\n (selector: ProviderToken|Function|string, opts?: {read?: any, static?: boolean}): any;\n new(selector: ProviderToken|Function|string,\n opts?: {read?: any, static?: boolean}): ContentChild;\n}\n\n/**\n * Type of the ContentChild metadata.\n *\n * @publicApi\n */\nexport type ContentChild = Query;\n\n/**\n * ContentChild decorator and metadata.\n *\n *\n * @Annotation\n *\n * @publicApi\n */\nexport const ContentChild: ContentChildDecorator = makePropDecorator(\n 'ContentChild',\n (selector?: any, data: any = {}) =>\n ({selector, first: true, isViewQuery: false, descendants: true, ...data}),\n Query);\n\n/**\n * Type of the ViewChildren decorator / constructor function.\n *\n * @see `ViewChildren`.\n *\n * @publicApi\n */\nexport interface ViewChildrenDecorator {\n /**\n * @description\n * Property decorator that configures a view query.\n *\n * Use to get the `QueryList` of elements or directives from the view DOM.\n * Any time a child element is added, removed, or moved, the query list will be updated,\n * and the changes observable of the query list will emit a new value.\n *\n * View queries are set before the `ngAfterViewInit` callback is called.\n *\n * **Metadata Properties**:\n *\n * * **selector** - The directive type or the name used for querying.\n * * **read** - Used to read a different token from the queried elements.\n * * **emitDistinctChangesOnly** - The ` QueryList#changes` observable will emit new values only\n * if the QueryList result has changed. When `false` the `changes` observable might emit even\n * if the QueryList has not changed.\n * ** Note: *** This config option is **deprecated**, it will be permanently set to `true` and\n * removed in future versions of Angular.\n *\n * The following selectors are supported.\n * * Any class with the `@Component` or `@Directive` decorator\n * * A template reference variable as a string (e.g. query ``\n * with `@ViewChildren('cmp')`)\n * * Any provider defined in the child component tree of the current component (e.g.\n * `@ViewChildren(SomeService) someService!: SomeService`)\n * * Any provider defined through a string token (e.g. `@ViewChildren('someToken')\n * someTokenVal!: any`)\n * * A `TemplateRef` (e.g. query `` with `@ViewChildren(TemplateRef)\n * template;`)\n *\n * In addition, multiple string selectors can be separated with a comma (e.g.\n * `@ViewChildren('cmp1,cmp2')`)\n *\n * The following values are supported by `read`:\n * * Any class with the `@Component` or `@Directive` decorator\n * * Any provider defined on the injector of the component that is matched by the `selector` of\n * this query\n * * Any provider defined through a string token (e.g. `{provide: 'token', useValue: 'val'}`)\n * * `TemplateRef`, `ElementRef`, and `ViewContainerRef`\n *\n * @usageNotes\n *\n * {@example core/di/ts/viewChildren/view_children_howto.ts region='HowTo'}\n *\n * ### Another example\n *\n * {@example core/di/ts/viewChildren/view_children_example.ts region='Component'}\n *\n * @Annotation\n */\n (selector: ProviderToken|Function|string,\n opts?: {read?: any, emitDistinctChangesOnly?: boolean}): any;\n new(selector: ProviderToken|Function|string,\n opts?: {read?: any, emitDistinctChangesOnly?: boolean}): ViewChildren;\n}\n\n/**\n * Type of the ViewChildren metadata.\n *\n * @publicApi\n */\nexport type ViewChildren = Query;\n\n/**\n * ViewChildren decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const ViewChildren: ViewChildrenDecorator = makePropDecorator(\n 'ViewChildren', (selector?: any, data: any = {}) => ({\n selector,\n first: false,\n isViewQuery: true,\n descendants: true,\n emitDistinctChangesOnly: emitDistinctChangesOnlyDefaultValue,\n ...data\n }),\n Query);\n\n/**\n * Type of the ViewChild decorator / constructor function.\n *\n * @see `ViewChild`.\n * @publicApi\n */\nexport interface ViewChildDecorator {\n /**\n * @description\n * Property decorator that configures a view query.\n * The change detector looks for the first element or the directive matching the selector\n * in the view DOM. If the view DOM changes, and a new child matches the selector,\n * the property is updated.\n *\n * View queries are set before the `ngAfterViewInit` callback is called.\n *\n * **Metadata Properties**:\n *\n * * **selector** - The directive type or the name used for querying.\n * * **read** - Used to read a different token from the queried elements.\n * * **static** - True to resolve query results before change detection runs,\n * false to resolve after change detection. Defaults to false.\n *\n *\n * The following selectors are supported.\n * * Any class with the `@Component` or `@Directive` decorator\n * * A template reference variable as a string (e.g. query ``\n * with `@ViewChild('cmp')`)\n * * Any provider defined in the child component tree of the current component (e.g.\n * `@ViewChild(SomeService) someService: SomeService`)\n * * Any provider defined through a string token (e.g. `@ViewChild('someToken') someTokenVal:\n * any`)\n * * A `TemplateRef` (e.g. query `` with `@ViewChild(TemplateRef)\n * template;`)\n *\n * The following values are supported by `read`:\n * * Any class with the `@Component` or `@Directive` decorator\n * * Any provider defined on the injector of the component that is matched by the `selector` of\n * this query\n * * Any provider defined through a string token (e.g. `{provide: 'token', useValue: 'val'}`)\n * * `TemplateRef`, `ElementRef`, and `ViewContainerRef`\n *\n * @usageNotes\n *\n * {@example core/di/ts/viewChild/view_child_example.ts region='Component'}\n *\n * ### Example 2\n *\n * {@example core/di/ts/viewChild/view_child_howto.ts region='HowTo'}\n *\n * @Annotation\n */\n (selector: ProviderToken|Function|string, opts?: {read?: any, static?: boolean}): any;\n new(selector: ProviderToken|Function|string,\n opts?: {read?: any, static?: boolean}): ViewChild;\n}\n\n/**\n * Type of the ViewChild metadata.\n *\n * @publicApi\n */\nexport type ViewChild = Query;\n\n/**\n * ViewChild decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const ViewChild: ViewChildDecorator = makePropDecorator(\n 'ViewChild',\n (selector: any, data: any) =>\n ({selector, first: true, isViewQuery: true, descendants: true, ...data}),\n Query);\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/**\n * A set of interfaces which are shared between `@angular/core` and `@angular/compiler` to allow\n * for late binding of `@angular/compiler` for JIT purposes.\n *\n * This file has two copies. Please ensure that they are in sync:\n * - packages/compiler/src/compiler_facade_interface.ts (main)\n * - packages/core/src/compiler/compiler_facade_interface.ts (replica)\n *\n * Please ensure that the two files are in sync using this command:\n * ```\n * cp packages/compiler/src/compiler_facade_interface.ts \\\n * packages/core/src/compiler/compiler_facade_interface.ts\n * ```\n */\n\nexport interface ExportedCompilerFacade {\n ɵcompilerFacade: CompilerFacade;\n}\n\nexport interface CompilerFacade {\n compilePipe(angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3PipeMetadataFacade):\n any;\n compilePipeDeclaration(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, declaration: R3DeclarePipeFacade): any;\n compileInjectable(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3InjectableMetadataFacade): any;\n compileInjectableDeclaration(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3DeclareInjectableFacade): any;\n compileInjector(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3InjectorMetadataFacade): any;\n compileInjectorDeclaration(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string,\n declaration: R3DeclareInjectorFacade): any;\n compileNgModule(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3NgModuleMetadataFacade): any;\n compileNgModuleDeclaration(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string,\n declaration: R3DeclareNgModuleFacade): any;\n compileDirective(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3DirectiveMetadataFacade): any;\n compileDirectiveDeclaration(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string,\n declaration: R3DeclareDirectiveFacade): any;\n compileComponent(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3ComponentMetadataFacade): any;\n compileComponentDeclaration(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string,\n declaration: R3DeclareComponentFacade): any;\n compileFactory(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3FactoryDefMetadataFacade): any;\n compileFactoryDeclaration(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3DeclareFactoryFacade): any;\n\n createParseSourceSpan(kind: string, typeName: string, sourceUrl: string): ParseSourceSpan;\n\n FactoryTarget: typeof FactoryTarget;\n // Note that we do not use `{new(): ResourceLoader}` here because\n // the resource loader class is abstract and not constructable.\n ResourceLoader: Function&{prototype: ResourceLoader};\n}\n\nexport interface CoreEnvironment {\n [name: string]: Function;\n}\n\nexport type ResourceLoader = {\n get(url: string): Promise|string;\n};\n\nexport type StringMap = {\n [key: string]: string;\n};\n\nexport type StringMapWithRename = {\n [key: string]: string|[string, string];\n};\n\nexport type Provider = unknown;\nexport type Type = Function;\nexport type OpaqueValue = unknown;\n\nexport enum FactoryTarget {\n Directive = 0,\n Component = 1,\n Injectable = 2,\n Pipe = 3,\n NgModule = 4,\n}\n\nexport interface R3DependencyMetadataFacade {\n token: OpaqueValue;\n attribute: string|null;\n host: boolean;\n optional: boolean;\n self: boolean;\n skipSelf: boolean;\n}\n\nexport interface R3DeclareDependencyMetadataFacade {\n token: OpaqueValue;\n attribute?: boolean;\n host?: boolean;\n optional?: boolean;\n self?: boolean;\n skipSelf?: boolean;\n}\n\nexport interface R3PipeMetadataFacade {\n name: string;\n type: Type;\n pipeName: string;\n pure: boolean;\n}\n\nexport interface R3InjectableMetadataFacade {\n name: string;\n type: Type;\n typeArgumentCount: number;\n providedIn?: Type|'root'|'platform'|'any'|null;\n useClass?: OpaqueValue;\n useFactory?: OpaqueValue;\n useExisting?: OpaqueValue;\n useValue?: OpaqueValue;\n deps?: R3DependencyMetadataFacade[];\n}\n\nexport interface R3NgModuleMetadataFacade {\n type: Type;\n bootstrap: Function[];\n declarations: Function[];\n imports: Function[];\n exports: Function[];\n schemas: {name: string}[]|null;\n id: string|null;\n}\n\nexport interface R3InjectorMetadataFacade {\n name: string;\n type: Type;\n providers: Provider[];\n imports: OpaqueValue[];\n}\n\nexport interface R3DirectiveMetadataFacade {\n name: string;\n type: Type;\n typeSourceSpan: ParseSourceSpan;\n selector: string|null;\n queries: R3QueryMetadataFacade[];\n host: {[key: string]: string};\n propMetadata: {[key: string]: OpaqueValue[]};\n lifecycle: {usesOnChanges: boolean;};\n inputs: string[];\n outputs: string[];\n usesInheritance: boolean;\n exportAs: string[]|null;\n providers: Provider[]|null;\n viewQueries: R3QueryMetadataFacade[];\n}\n\nexport interface R3ComponentMetadataFacade extends R3DirectiveMetadataFacade {\n template: string;\n preserveWhitespaces: boolean;\n animations: OpaqueValue[]|undefined;\n pipes: Map;\n directives: R3UsedDirectiveMetadata[];\n styles: string[];\n encapsulation: ViewEncapsulation;\n viewProviders: Provider[]|null;\n interpolation?: [string, string];\n changeDetection?: ChangeDetectionStrategy;\n}\n\nexport interface R3DeclareDirectiveFacade {\n selector?: string;\n type: Type;\n inputs?: {[classPropertyName: string]: string|[string, string]};\n outputs?: {[classPropertyName: string]: string};\n host?: {\n attributes?: {[key: string]: OpaqueValue};\n listeners?: {[key: string]: string};\n properties?: {[key: string]: string};\n classAttribute?: string;\n styleAttribute?: string;\n };\n queries?: R3DeclareQueryMetadataFacade[];\n viewQueries?: R3DeclareQueryMetadataFacade[];\n providers?: OpaqueValue;\n exportAs?: string[];\n usesInheritance?: boolean;\n usesOnChanges?: boolean;\n}\n\nexport interface R3DeclareComponentFacade extends R3DeclareDirectiveFacade {\n template: string;\n isInline?: boolean;\n styles?: string[];\n components?: R3DeclareUsedDirectiveFacade[];\n directives?: R3DeclareUsedDirectiveFacade[];\n pipes?: {[pipeName: string]: OpaqueValue|(() => OpaqueValue)};\n viewProviders?: OpaqueValue;\n animations?: OpaqueValue;\n changeDetection?: ChangeDetectionStrategy;\n encapsulation?: ViewEncapsulation;\n interpolation?: [string, string];\n preserveWhitespaces?: boolean;\n}\n\nexport interface R3DeclareUsedDirectiveFacade {\n selector: string;\n type: OpaqueValue|(() => OpaqueValue);\n inputs?: string[];\n outputs?: string[];\n exportAs?: string[];\n}\n\nexport interface R3UsedDirectiveMetadata {\n selector: string;\n inputs: string[];\n outputs: string[];\n exportAs: string[]|null;\n type: any;\n}\n\nexport interface R3FactoryDefMetadataFacade {\n name: string;\n type: Type;\n typeArgumentCount: number;\n deps: R3DependencyMetadataFacade[]|null;\n target: FactoryTarget;\n}\n\nexport interface R3DeclareFactoryFacade {\n type: Type;\n deps: R3DeclareDependencyMetadataFacade[]|'invalid'|null;\n target: FactoryTarget;\n}\n\nexport interface R3DeclareInjectableFacade {\n type: Type;\n providedIn?: Type|'root'|'platform'|'any'|null;\n useClass?: OpaqueValue;\n useFactory?: OpaqueValue;\n useExisting?: OpaqueValue;\n useValue?: OpaqueValue;\n deps?: R3DeclareDependencyMetadataFacade[];\n}\n\nexport enum ViewEncapsulation {\n Emulated = 0,\n // Historically the 1 value was for `Native` encapsulation which has been removed as of v11.\n None = 2,\n ShadowDom = 3\n}\n\nexport type ChangeDetectionStrategy = number;\n\nexport interface R3QueryMetadataFacade {\n propertyName: string;\n first: boolean;\n predicate: OpaqueValue|string[];\n descendants: boolean;\n emitDistinctChangesOnly: boolean;\n read: OpaqueValue|null;\n static: boolean;\n}\n\nexport interface R3DeclareQueryMetadataFacade {\n propertyName: string;\n first?: boolean;\n predicate: OpaqueValue|string[];\n descendants?: boolean;\n read?: OpaqueValue;\n static?: boolean;\n emitDistinctChangesOnly?: boolean;\n}\n\nexport interface R3DeclareInjectorFacade {\n type: Type;\n imports?: OpaqueValue[];\n providers?: OpaqueValue[];\n}\n\nexport interface R3DeclareNgModuleFacade {\n type: Type;\n bootstrap?: OpaqueValue[]|(() => OpaqueValue[]);\n declarations?: OpaqueValue[]|(() => OpaqueValue[]);\n imports?: OpaqueValue[]|(() => OpaqueValue[]);\n exports?: OpaqueValue[]|(() => OpaqueValue[]);\n schemas?: OpaqueValue[];\n id?: OpaqueValue;\n}\n\nexport interface R3DeclarePipeFacade {\n type: Type;\n name: string;\n pure?: boolean;\n}\n\nexport interface ParseSourceSpan {\n start: any;\n end: any;\n details: any;\n fullStart: any;\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 */\nimport {global} from '../util/global';\nimport {CompilerFacade, ExportedCompilerFacade, Type} from './compiler_facade_interface';\nexport * from './compiler_facade_interface';\n\nexport const enum JitCompilerUsage {\n Decorator,\n PartialDeclaration,\n}\n\ninterface JitCompilerUsageRequest {\n usage: JitCompilerUsage;\n kind: 'directive'|'component'|'pipe'|'injectable'|'NgModule';\n type: Type;\n}\n\nexport function getCompilerFacade(request: JitCompilerUsageRequest): CompilerFacade {\n const globalNg: ExportedCompilerFacade = global['ng'];\n if (globalNg && globalNg.ɵcompilerFacade) {\n return globalNg.ɵcompilerFacade;\n }\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\n let message = `The ${request.kind} '${\n request\n .type.name}' needs to be compiled using the JIT compiler, but '@angular/compiler' is not available.\\n\\n`;\n if (request.usage === 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 } 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 } else {\n throw new Error('JIT compiler unavailable');\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 * @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 */\nexport const Type = Function;\n\nexport function isType(v: any): v is Type {\n return typeof v === 'function';\n}\n\n/**\n * @description\n *\n * Represents an abstract class `T`, if applied to a concrete class it would stop being\n * instantiable.\n *\n * @publicApi\n */\nexport interface AbstractType extends Function {\n prototype: T;\n}\n\nexport interface Type extends Function {\n new(...args: any[]): T;\n}\n\nexport type Mutable = {\n [P in K]: T[P];\n};\n\n/**\n * Returns a writable type version of type.\n *\n * USAGE:\n * Given:\n * ```\n * interface Person {readonly name: string}\n * ```\n *\n * We would like to get a read/write version of `Person`.\n * ```\n * const WritablePerson = Writable;\n * ```\n *\n * The result is that you can do:\n *\n * ```\n * const readonlyPerson: Person = {name: 'Marry'};\n * readonlyPerson.name = 'John'; // TypeError\n * (readonlyPerson as WritablePerson).name = 'John'; // OK\n *\n * // Error: Correctly detects that `Person` did not have `age` property.\n * (readonlyPerson as WritablePerson).age = 30;\n * ```\n */\nexport type Writable = {\n -readonly[K in keyof T]: T[K];\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\nimport {assertEqual, assertLessThanOrEqual} from './assert';\n\n/**\n * Equivalent to ES6 spread, add each item to an array.\n *\n * @param items The items to add\n * @param arr The array to which you want to add the items\n */\nexport function addAllToArray(items: any[], arr: any[]) {\n for (let i = 0; i < items.length; i++) {\n arr.push(items[i]);\n }\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 */\nexport function arrayEquals(a: T[], b: T[], identityAccessor?: (value: T) => unknown): boolean {\n if (a.length !== b.length) 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) as any;\n valueB = identityAccessor(valueB) as any;\n }\n if (valueB !== valueA) {\n return false;\n }\n }\n return true;\n}\n\n\n/**\n * Flattens an array.\n */\nexport function flatten(list: any[], dst?: any[]): any[] {\n if (dst === undefined) dst = list;\n for (let i = 0; i < list.length; i++) {\n let item = list[i];\n if (Array.isArray(item)) {\n // we need to inline it.\n if (dst === list) {\n // Our assumption that the list was already flat was wrong and\n // we need to clone flat since we need to write to it.\n dst = list.slice(0, i);\n }\n flatten(item, dst);\n } else if (dst !== list) {\n dst.push(item);\n }\n }\n return dst;\n}\n\nexport function deepForEach(input: (T|any[])[], fn: (value: T) => void): void {\n input.forEach(value => Array.isArray(value) ? deepForEach(value, fn) : fn(value));\n}\n\nexport function addToArray(arr: any[], index: number, value: any): void {\n // perf: array.push is faster than array.splice!\n if (index >= arr.length) {\n arr.push(value);\n } else {\n arr.splice(index, 0, value);\n }\n}\n\nexport function removeFromArray(arr: any[], index: number): any {\n // perf: array.pop is faster than array.splice!\n if (index >= arr.length - 1) {\n return arr.pop();\n } else {\n return arr.splice(index, 1)[0];\n }\n}\n\nexport function newArray(size: number): T[];\nexport function newArray(size: number, value: T): T[];\nexport function newArray(size: number, value?: T): T[] {\n const list: T[] = [];\n for (let i = 0; i < size; i++) {\n list.push(value!);\n }\n return list;\n}\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 */\nexport function arraySplice(array: any[], index: number, count: number): void {\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/**\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 */\nexport function arrayInsert(array: any[], index: number, value: any): void {\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/**\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 */\nexport function arrayInsert2(array: any[], index: number, value1: any, value2: any): void {\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 } 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 } 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/**\n * Insert a `value` into an `array` so that the array remains sorted.\n *\n * NOTE:\n * - Duplicates are not allowed, and are ignored.\n * - This uses binary search algorithm for fast inserts.\n *\n * @param array A sorted array to insert into.\n * @param value The value to insert.\n * @returns index of the inserted value.\n */\nexport function arrayInsertSorted(array: string[], value: string): number {\n let index = arrayIndexOfSorted(array, value);\n if (index < 0) {\n // if we did not find it insert it.\n index = ~index;\n arrayInsert(array, index, value);\n }\n return index;\n}\n\n/**\n * Remove `value` from a sorted `array`.\n *\n * NOTE:\n * - This uses binary search algorithm for fast removals.\n *\n * @param array A sorted array to remove from.\n * @param value The value to remove.\n * @returns index of the removed value.\n * - positive index if value found and removed.\n * - negative index if value not found. (`~index` to get the value where it should have been\n * inserted)\n */\nexport function arrayRemoveSorted(array: string[], value: string): number {\n const index = arrayIndexOfSorted(array, value);\n if (index >= 0) {\n arraySplice(array, index, 1);\n }\n return index;\n}\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 */\nexport function arrayIndexOfSorted(array: string[], value: string): number {\n return _arrayIndexOfSorted(array, value, 0);\n}\n\n\n/**\n * `KeyValueArray` is an array where even positions contain keys and odd positions contain values.\n *\n * `KeyValueArray` provides a very efficient way of iterating over its contents. For small\n * sets (~10) the cost of binary searching an `KeyValueArray` has about the same performance\n * characteristics that of a `Map` with significantly better memory footprint.\n *\n * If used as a `Map` the keys are stored in alphabetical order so that they can be binary searched\n * for retrieval.\n *\n * See: `keyValueArraySet`, `keyValueArrayGet`, `keyValueArrayIndexOf`, `keyValueArrayDelete`.\n */\nexport interface KeyValueArray extends Array {\n __brand__: 'array-map';\n}\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 */\nexport function keyValueArraySet(\n keyValueArray: KeyValueArray, key: string, value: V): number {\n let index = keyValueArrayIndexOf(keyValueArray, key);\n if (index >= 0) {\n // if we found it set it.\n keyValueArray[index | 1] = value;\n } else {\n index = ~index;\n arrayInsert2(keyValueArray, index, key, value);\n }\n return index;\n}\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 */\nexport function keyValueArrayGet(keyValueArray: KeyValueArray, key: string): V|undefined {\n const index = keyValueArrayIndexOf(keyValueArray, key);\n if (index >= 0) {\n // if we found it retrieve it.\n return keyValueArray[index | 1] as V;\n }\n return undefined;\n}\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 */\nexport function keyValueArrayIndexOf(keyValueArray: KeyValueArray, key: string): number {\n return _arrayIndexOfSorted(keyValueArray as string[], key, 1);\n}\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 */\nexport function keyValueArrayDelete(keyValueArray: KeyValueArray, key: string): number {\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\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: string[], value: string, shift: number): number {\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 } else if (current > value) {\n end = middle;\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 * @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\nimport {isType, Type} from '../interface/type';\nimport {newArray} from '../util/array_utils';\nimport {ANNOTATIONS, PARAMETERS, PROP_METADATA} from '../util/decorators';\nimport {global} from '../util/global';\nimport {stringify} from '../util/stringify';\n\nimport {PlatformReflectionCapabilities} from './platform_reflection_capabilities';\nimport {GetterFn, MethodFn, SetterFn} from './types';\n\n\n\n/*\n * #########################\n * Attention: These Regular expressions have to hold even if the code is minified!\n * ##########################\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))) || this;\n * ```\n *\n * More details can be found in: https://github.com/angular/angular/issues/38453.\n */\nexport const ES5_DELEGATE_CTOR =\n /^function\\s+\\S+\\(\\)\\s*{[\\s\\S]+\\.apply\\(this,\\s*(arguments|(?:[^()]+\\(\\[\\],)?[^()]+\\(arguments\\))\\)/;\n/** Regular expression that detects ES2015 classes which extend from other classes. */\nexport const 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 */\nexport const ES2015_INHERITED_CLASS_WITH_CTOR =\n /^class\\s+[A-Za-z\\d$_]*\\s*extends\\s+[^{]+{[\\s\\S]*constructor\\s*\\(/;\n/**\n * Regular expression that detects ES2015 classes which extend from other classes\n * and inherit a constructor.\n */\nexport const ES2015_INHERITED_CLASS_WITH_DELEGATE_CTOR =\n /^class\\s+[A-Za-z\\d$_]*\\s*extends\\s+[^{]+{[\\s\\S]*constructor\\s*\\(\\)\\s*{\\s*super\\(\\.\\.\\.arguments\\)/;\n\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 */\nexport function isDelegateCtor(typeStr: string): boolean {\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}\n\nexport class ReflectionCapabilities implements PlatformReflectionCapabilities {\n private _reflect: any;\n\n constructor(reflect?: any) {\n this._reflect = reflect || global['Reflect'];\n }\n\n isReflectionEnabled(): boolean {\n return true;\n }\n\n factory(t: Type): (args: any[]) => T {\n return (...args: any[]) => new t(...args);\n }\n\n /** @internal */\n _zipTypesAndAnnotations(paramTypes: any[], paramAnnotations: any[]): any[][] {\n let result: any[][];\n\n if (typeof paramTypes === 'undefined') {\n result = newArray(paramAnnotations.length);\n } else {\n result = newArray(paramTypes.length);\n }\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 } else if (paramTypes[i] && paramTypes[i] != Object) {\n result[i] = [paramTypes[i]];\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\n private _ownParameters(type: Type, parentCtor: any): any[][]|null {\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\n // Prefer the direct API.\n if ((type).parameters && (type).parameters !== parentCtor.parameters) {\n return (type).parameters;\n }\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 =\n typeof tsickleCtorParams === 'function' ? tsickleCtorParams() : tsickleCtorParams;\n const paramTypes = ctorParameters.map((ctorParam: any) => ctorParam && ctorParam.type);\n const paramAnnotations = ctorParameters.map(\n (ctorParam: any) =>\n ctorParam && convertTsickleDecoratorIntoMetadata(ctorParam.decorators));\n return this._zipTypesAndAnnotations(paramTypes, paramAnnotations);\n }\n\n // API for metadata created by invoking the decorators.\n const paramAnnotations = type.hasOwnProperty(PARAMETERS) && (type as any)[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\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\n parameters(type: Type): any[][] {\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\n private _ownAnnotations(typeOrFunc: Type, parentCtor: any): any[]|null {\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\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\n // API for metadata created by invoking the decorators.\n if (typeOrFunc.hasOwnProperty(ANNOTATIONS)) {\n return (typeOrFunc as any)[ANNOTATIONS];\n }\n return null;\n }\n\n annotations(typeOrFunc: Type): any[] {\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\n private _ownPropMetadata(typeOrFunc: any, parentCtor: any): {[key: string]: any[]}|null {\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\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 = <{[key: string]: any[]}>{};\n Object.keys(propDecorators).forEach(prop => {\n propMetadata[prop] = convertTsickleDecoratorIntoMetadata(propDecorators[prop]);\n });\n return propMetadata;\n }\n\n // API for metadata created by invoking the decorators.\n if (typeOrFunc.hasOwnProperty(PROP_METADATA)) {\n return (typeOrFunc as any)[PROP_METADATA];\n }\n return null;\n }\n\n propMetadata(typeOrFunc: any): {[key: string]: any[]} {\n if (!isType(typeOrFunc)) {\n return {};\n }\n const parentCtor = getParentCtor(typeOrFunc);\n const propMetadata: {[key: string]: any[]} = {};\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: any[] = [];\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\n ownPropMetadata(typeOrFunc: any): {[key: string]: any[]} {\n if (!isType(typeOrFunc)) {\n return {};\n }\n return this._ownPropMetadata(typeOrFunc, getParentCtor(typeOrFunc)) || {};\n }\n\n hasLifecycleHook(type: any, lcProperty: string): boolean {\n return type instanceof Type && lcProperty in type.prototype;\n }\n\n guards(type: any): {[key: string]: any} {\n return {};\n }\n\n getter(name: string): GetterFn {\n return new Function('o', 'return o.' + name + ';');\n }\n\n setter(name: string): SetterFn {\n return new Function('o', 'v', 'return o.' + name + ' = v;');\n }\n\n method(name: string): MethodFn {\n const functionBody = `if (!o.${name}) throw new Error('\"${name}\" is undefined');\n return o.${name}.apply(o, args);`;\n return new Function('o', 'args', functionBody);\n }\n\n // There is not a concept of import uri in Js, but this is useful in developing Dart applications.\n importUri(type: any): string {\n // StaticSymbol\n if (typeof type === 'object' && type['filePath']) {\n return type['filePath'];\n }\n // Runtime type\n return `./${stringify(type)}`;\n }\n\n resourceUri(type: any): string {\n return `./${stringify(type)}`;\n }\n\n resolveIdentifier(name: string, moduleUrl: string, members: string[], runtime: any): any {\n return runtime;\n }\n resolveEnum(enumIdentifier: any, name: string): any {\n return enumIdentifier[name];\n }\n}\n\nfunction convertTsickleDecoratorIntoMetadata(decoratorInvocations: any[]): any[] {\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}\n\nfunction getParentCtor(ctor: Function): Type {\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 * @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\nimport '../util/ng_dev_mode';\n\nimport {Type} from '../interface/type';\nimport {getClosureSafeProperty} from '../util/property';\nimport {stringify} from '../util/stringify';\n\nimport {resolveForwardRef} from './forward_ref';\nimport {getInjectImplementation, injectRootLimpMode} from './inject_switch';\nimport {Injector} from './injector';\nimport {DecoratorFlags, InjectFlags, InternalInjectFlags} from './interface/injector';\nimport {ValueProvider} from './interface/provider';\nimport {ProviderToken} from './provider_token';\n\n\nconst _THROW_IF_NOT_FOUND = {};\nexport const THROW_IF_NOT_FOUND = _THROW_IF_NOT_FOUND;\n\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__';\n\nexport const NG_TEMP_TOKEN_PATH = 'ngTempTokenPath';\nconst NG_TOKEN_PATH = 'ngTokenPath';\nconst NEW_LINE = /\\n/gm;\nconst NO_NEW_LINE = 'ɵ';\nexport const SOURCE = '__source';\n\nexport const USE_VALUE =\n getClosureSafeProperty({provide: String, useValue: getClosureSafeProperty});\n\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: Injector|undefined|null = undefined;\n\nexport function setCurrentInjector(injector: Injector|null|undefined): Injector|undefined|null {\n const former = _currentInjector;\n _currentInjector = injector;\n return former;\n}\n\nexport function injectInjectorOnly(token: ProviderToken): T;\nexport function injectInjectorOnly(token: ProviderToken, flags?: InjectFlags): T|null;\nexport function injectInjectorOnly(token: ProviderToken, flags = InjectFlags.Default): T|\n null {\n if (_currentInjector === undefined) {\n throw new Error(`inject() must be called from an injection context`);\n } else if (_currentInjector === null) {\n return injectRootLimpMode(token, undefined, flags);\n } else {\n return _currentInjector.get(token, flags & InjectFlags.Optional ? null : undefined, flags);\n }\n}\n\n/**\n * Generated instruction: Injects a token from the currently active injector.\n *\n * Must be used in the context of a factory function such as one defined for an\n * `InjectionToken`. Throws an error if not called from such a context.\n *\n * (Additional documentation moved to `inject`, as it is the public API, and an alias for this\n * instruction)\n *\n * @see inject\n * @codeGenApi\n * @publicApi This instruction has been emitted by ViewEngine for some time and is deployed to npm.\n */\nexport function ɵɵinject(token: ProviderToken): T;\nexport function ɵɵinject(token: ProviderToken, flags?: InjectFlags): T|null;\nexport function ɵɵinject(token: ProviderToken, flags = InjectFlags.Default): T|null {\n return (getInjectImplementation() || injectInjectorOnly)(resolveForwardRef(token), flags);\n}\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 */\nexport function ɵɵinvalidFactoryDep(index: number): never {\n const msg = ngDevMode ?\n `This constructor is not compatible with Angular Dependency Injection because its dependency at index ${\n 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 ${\n index} is correct and 2) the correct Angular decorators are defined for this class and its ancestors.` :\n 'invalid';\n throw new Error(msg);\n}\n\n/**\n * Injects a token from the currently active injector.\n *\n * Must be used in the context of a factory function such as one defined for an\n * `InjectionToken`. Throws an error if not called from such a context.\n *\n * Within such a factory function, using this function to request injection of a dependency\n * is faster and more type-safe than providing an additional array of dependencies\n * (as has been common with `useFactory` providers).\n *\n * @param token The injection token for the dependency to 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`, `@SkipSef`, and `@Optional`.\n * @returns the injected value if injection is successful, `null` otherwise.\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example core/di/ts/injector_spec.ts region='ShakableInjectionToken'}\n *\n * @publicApi\n */\nexport const inject = ɵɵinject;\n\nexport function injectArgs(types: (ProviderToken|any[])[]): any[] {\n const args: any[] = [];\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 Error('Arguments array must have arguments.');\n }\n let type: Type|undefined = undefined;\n let flags: InjectFlags = InjectFlags.Default;\n\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 === DecoratorFlags.Inject) {\n type = meta.token;\n } else {\n flags |= flag;\n }\n } else {\n type = meta;\n }\n }\n\n args.push(ɵɵinject(type!, flags));\n } else {\n args.push(ɵɵinject(arg));\n }\n }\n return args;\n}\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 */\nexport function attachInjectFlag(decorator: any, flag: InternalInjectFlags|DecoratorFlags): any {\n decorator[DI_DECORATOR_FLAG] = flag;\n decorator.prototype[DI_DECORATOR_FLAG] = flag;\n return decorator;\n}\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 */\nexport function getInjectFlag(token: any): number|undefined {\n return token[DI_DECORATOR_FLAG];\n}\n\nexport function catchInjectorError(\n e: any, token: any, injectorErrorName: string, source: string|null): never {\n const tokenPath: any[] = 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}\n\nexport function formatError(\n text: string, obj: any, injectorErrorName: string, source: string|null = null): string {\n text = text && text.charAt(0) === '\\n' && text.charAt(1) == NO_NEW_LINE ? text.substr(2) : text;\n let context = stringify(obj);\n if (Array.isArray(obj)) {\n context = obj.map(stringify).join(' -> ');\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(\n key + ':' + (typeof value === 'string' ? JSON.stringify(value) : stringify(value)));\n }\n }\n context = `{${parts.join(', ')}}`;\n }\n return `${injectorErrorName}${source ? '(' + source + ')' : ''}[${context}]: ${\n text.replace(NEW_LINE, '\\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\nimport {makeParamDecorator} from '../util/decorators';\n\nimport {attachInjectFlag} from './injector_compatibility';\nimport {DecoratorFlags, InternalInjectFlags} from './interface/injector';\n\n\n/**\n * Type of the Inject decorator / constructor function.\n *\n * @publicApi\n */\nexport interface InjectDecorator {\n /**\n * Parameter decorator on a dependency parameter of a class constructor\n * that specifies a custom provider of the dependency.\n *\n * @usageNotes\n * The following example shows a class constructor that specifies a\n * custom provider of a dependency using the parameter decorator.\n *\n * When `@Inject()` is not present, the injector uses the type annotation of the\n * parameter as the provider.\n *\n * \n * \n *\n * @see [\"Dependency Injection Guide\"](guide/dependency-injection)\n *\n */\n (token: any): any;\n new(token: any): Inject;\n}\n\n/**\n * Type of the Inject metadata.\n *\n * @publicApi\n */\nexport interface Inject {\n /**\n * A [DI token](guide/glossary#di-token) that maps to the dependency to be injected.\n */\n token: any;\n}\n\n/**\n * Inject decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const Inject: InjectDecorator = attachInjectFlag(\n // Disable tslint because `DecoratorFlags` is a const enum which gets inlined.\n // tslint:disable-next-line: no-toplevel-property-access\n makeParamDecorator('Inject', (token: any) => ({token})), DecoratorFlags.Inject);\n\n/**\n * Type of the Optional decorator / constructor function.\n *\n * @publicApi\n */\nexport interface OptionalDecorator {\n /**\n * Parameter decorator to be used on constructor parameters,\n * which marks the parameter as being an optional dependency.\n * The DI framework provides `null` if the dependency is not found.\n *\n * Can be used together with other parameter decorators\n * that modify how dependency injection operates.\n *\n * @usageNotes\n *\n * The following code allows the possibility of a `null` result:\n *\n * \n * \n *\n * @see [\"Dependency Injection Guide\"](guide/dependency-injection).\n */\n (): any;\n new(): Optional;\n}\n\n/**\n * Type of the Optional metadata.\n *\n * @publicApi\n */\nexport interface Optional {}\n\n/**\n * Optional decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const Optional: OptionalDecorator =\n // Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n // tslint:disable-next-line: no-toplevel-property-access\n attachInjectFlag(makeParamDecorator('Optional'), InternalInjectFlags.Optional);\n\n/**\n * Type of the Self decorator / constructor function.\n *\n * @publicApi\n */\nexport interface SelfDecorator {\n /**\n * Parameter decorator to be used on constructor parameters,\n * which tells the DI framework to start dependency resolution from the local injector.\n *\n * Resolution works upward through the injector hierarchy, so the children\n * of this class must configure their own providers or be prepared for a `null` result.\n *\n * @usageNotes\n *\n * In the following example, the dependency can be resolved\n * by the local injector when instantiating the class itself, but not\n * when instantiating a child.\n *\n * \n * \n *\n * @see `SkipSelf`\n * @see `Optional`\n *\n */\n (): any;\n new(): Self;\n}\n\n/**\n * Type of the Self metadata.\n *\n * @publicApi\n */\nexport interface Self {}\n\n/**\n * Self decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const Self: SelfDecorator =\n // Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n // tslint:disable-next-line: no-toplevel-property-access\n attachInjectFlag(makeParamDecorator('Self'), InternalInjectFlags.Self);\n\n\n/**\n * Type of the `SkipSelf` decorator / constructor function.\n *\n * @publicApi\n */\nexport interface SkipSelfDecorator {\n /**\n * Parameter decorator to be used on constructor parameters,\n * which tells the DI framework to start dependency resolution from the parent injector.\n * Resolution works upward through the injector hierarchy, so the local injector\n * is not checked for a provider.\n *\n * @usageNotes\n *\n * In the following example, the dependency can be resolved when\n * instantiating a child, but not when instantiating the class itself.\n *\n * \n * \n *\n * @see [Dependency Injection guide](guide/dependency-injection-in-action#skip).\n * @see `Self`\n * @see `Optional`\n *\n */\n (): any;\n new(): SkipSelf;\n}\n\n/**\n * Type of the `SkipSelf` metadata.\n *\n * @publicApi\n */\nexport interface SkipSelf {}\n\n/**\n * `SkipSelf` decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const SkipSelf: SkipSelfDecorator =\n // Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n // tslint:disable-next-line: no-toplevel-property-access\n attachInjectFlag(makeParamDecorator('SkipSelf'), InternalInjectFlags.SkipSelf);\n\n/**\n * Type of the `Host` decorator / constructor function.\n *\n * @publicApi\n */\nexport interface HostDecorator {\n /**\n * Parameter decorator on a view-provider parameter of a class constructor\n * that tells the DI framework to resolve the view by checking injectors of child\n * elements, and stop when reaching the host element of the current component.\n *\n * @usageNotes\n *\n * The following shows use with the `@Optional` decorator, and allows for a `null` result.\n *\n * \n * \n *\n * For an extended example, see [\"Dependency Injection\n * Guide\"](guide/dependency-injection-in-action#optional).\n */\n (): any;\n new(): Host;\n}\n\n/**\n * Type of the Host metadata.\n *\n * @publicApi\n */\nexport interface Host {}\n\n/**\n * Host decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const Host: HostDecorator =\n // Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n // tslint:disable-next-line: no-toplevel-property-access\n attachInjectFlag(makeParamDecorator('Host'), InternalInjectFlags.Host);\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\nimport {R3DependencyMetadataFacade} from '../../compiler/compiler_facade';\nimport {Type} from '../../interface/type';\nimport {ReflectionCapabilities} from '../../reflection/reflection_capabilities';\nimport {Host, Inject, Optional, Self, SkipSelf} from '../metadata';\nimport {Attribute} from '../metadata_attr';\n\nlet _reflect: ReflectionCapabilities|null = null;\n\nexport function getReflect(): ReflectionCapabilities {\n return (_reflect = _reflect || new ReflectionCapabilities());\n}\n\nexport function reflectDependencies(type: Type): R3DependencyMetadataFacade[] {\n return convertDependencies(getReflect().parameters(type));\n}\n\nexport function convertDependencies(deps: any[]): R3DependencyMetadataFacade[] {\n return deps.map(dep => reflectDependency(dep));\n}\n\nfunction reflectDependency(dep: any|any[]): R3DependencyMetadataFacade {\n const meta: R3DependencyMetadataFacade = {\n token: null,\n attribute: null,\n host: false,\n optional: false,\n self: false,\n skipSelf: false,\n };\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\n const proto = Object.getPrototypeOf(param);\n\n if (param instanceof Optional || proto.ngMetadataName === 'Optional') {\n meta.optional = true;\n } else if (param instanceof SkipSelf || proto.ngMetadataName === 'SkipSelf') {\n meta.skipSelf = true;\n } else if (param instanceof Self || proto.ngMetadataName === 'Self') {\n meta.self = true;\n } else if (param instanceof Host || proto.ngMetadataName === 'Host') {\n meta.host = true;\n } else if (param instanceof Inject) {\n meta.token = param.token;\n } else if (param instanceof Attribute) {\n if (param.attributeName === undefined) {\n throw new Error(`Attribute name must be defined.`);\n }\n meta.attribute = param.attributeName;\n } else {\n meta.token = param;\n }\n }\n } else if (dep === undefined || (Array.isArray(dep) && dep.length === 0)) {\n meta.token = null;\n } else {\n meta.token = dep;\n }\n return meta;\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\nimport {Type} from '../interface/type';\nimport {Component} from './directives';\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 */\nexport function resolveComponentResources(\n resourceResolver: (url: string) => (Promise}>)): Promise {\n // Store all promises which are fetching the resources.\n const componentResolved: Promise[] = [];\n\n // Cache so that we don't fetch the same resource more than once.\n const urlMap = new Map>();\n function cachedResourceResolve(url: string): Promise {\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\n componentResourceResolutionQueue.forEach((component: Component, type: Type) => {\n const promises: Promise[] = [];\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}\n\nlet componentResourceResolutionQueue = new Map, Component>();\n\n// Track when existing ɵcmp for a Type is waiting on resources.\nconst componentDefPendingResolution = new Set>();\n\nexport function maybeQueueResolutionOfComponentResources(type: Type, metadata: Component) {\n if (componentNeedsResolution(metadata)) {\n componentResourceResolutionQueue.set(type, metadata);\n componentDefPendingResolution.add(type);\n }\n}\n\nexport function isComponentDefPendingResolution(type: Type): boolean {\n return componentDefPendingResolution.has(type);\n}\n\nexport function componentNeedsResolution(component: Component): boolean {\n return !!(\n (component.templateUrl && !component.hasOwnProperty('template')) ||\n component.styleUrls && component.styleUrls.length);\n}\nexport function clearResolutionOfComponentResourcesQueue(): Map, Component> {\n const old = componentResourceResolutionQueue;\n componentResourceResolutionQueue = new Map();\n return old;\n}\n\nexport function restoreComponentResolutionQueue(queue: Map, Component>): void {\n componentDefPendingResolution.clear();\n queue.forEach((_, type) => componentDefPendingResolution.add(type));\n componentResourceResolutionQueue = queue;\n}\n\nexport function isComponentResourceResolutionQueueEmpty() {\n return componentResourceResolutionQueue.size === 0;\n}\n\nfunction unwrapResponse(response: string|{text(): Promise}): string|Promise {\n return typeof response == 'string' ? response : response.text();\n}\n\nfunction componentDefResolved(type: Type): void {\n componentDefPendingResolution.delete(type);\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 * @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\nimport {global} from '../global';\nimport {TrustedHTML, TrustedScript, TrustedScriptURL, TrustedTypePolicy, TrustedTypePolicyFactory} from './trusted_type_defs';\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: TrustedTypePolicy|null|undefined;\n\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(): TrustedTypePolicy|null {\n if (policy === undefined) {\n policy = null;\n if (global.trustedTypes) {\n try {\n policy = (global.trustedTypes as TrustedTypePolicyFactory).createPolicy('angular', {\n createHTML: (s: string) => s,\n createScript: (s: string) => s,\n createScriptURL: (s: string) => s,\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/**\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 */\nexport function trustedHTMLFromString(html: string): TrustedHTML|string {\n return getPolicy()?.createHTML(html) || html;\n}\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 */\nexport function trustedScriptFromString(script: string): TrustedScript|string {\n return getPolicy()?.createScript(script) || script;\n}\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 */\nexport function trustedScriptURLFromString(url: string): TrustedScriptURL|string {\n return getPolicy()?.createScriptURL(url) || url;\n}\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 */\nexport function newTrustedFunctionForDev(...args: string[]): Function {\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\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\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) as string) as Function;\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\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\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 * @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 * @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\nimport {global} from '../global';\nimport {TrustedHTML, TrustedScript, TrustedScriptURL, TrustedTypePolicy, TrustedTypePolicyFactory} from './trusted_type_defs';\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: TrustedTypePolicy|null|undefined;\n\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(): TrustedTypePolicy|null {\n if (policy === undefined) {\n policy = null;\n if (global.trustedTypes) {\n try {\n policy = (global.trustedTypes as TrustedTypePolicyFactory)\n .createPolicy('angular#unsafe-bypass', {\n createHTML: (s: string) => s,\n createScript: (s: string) => s,\n createScriptURL: (s: string) => s,\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/**\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 */\nexport function trustedHTMLFromStringBypass(html: string): TrustedHTML|string {\n return getPolicy()?.createHTML(html) || html;\n}\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 */\nexport function trustedScriptFromStringBypass(script: string): TrustedScript|string {\n return getPolicy()?.createScript(script) || script;\n}\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 */\nexport function trustedScriptURLFromStringBypass(url: string): TrustedScriptURL|string {\n return getPolicy()?.createScriptURL(url) || url;\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\nexport const enum BypassType {\n Url = 'URL',\n Html = 'HTML',\n ResourceUrl = 'ResourceURL',\n Script = 'Script',\n Style = 'Style',\n}\n\n/**\n * Marker interface for a value that's safe to use in a particular context.\n *\n * @publicApi\n */\nexport interface SafeValue {}\n\n/**\n * Marker interface for a value that's safe to use as HTML.\n *\n * @publicApi\n */\nexport interface SafeHtml extends SafeValue {}\n\n/**\n * Marker interface for a value that's safe to use as style (CSS).\n *\n * @publicApi\n */\nexport interface SafeStyle extends SafeValue {}\n\n/**\n * Marker interface for a value that's safe to use as JavaScript.\n *\n * @publicApi\n */\nexport interface SafeScript extends SafeValue {}\n\n/**\n * Marker interface for a value that's safe to use as a URL linking to a document.\n *\n * @publicApi\n */\nexport interface SafeUrl extends SafeValue {}\n\n/**\n * Marker interface for a value that's safe to use as a URL to load executable code from.\n *\n * @publicApi\n */\nexport interface SafeResourceUrl extends SafeValue {}\n\n\nabstract class SafeValueImpl implements SafeValue {\n constructor(public changingThisBreaksApplicationSecurity: string) {}\n\n abstract getTypeName(): string;\n\n toString() {\n return `SafeValue must use [property]=binding: ${this.changingThisBreaksApplicationSecurity}` +\n ` (see https://g.co/ng/security#xss)`;\n }\n}\n\nclass SafeHtmlImpl extends SafeValueImpl implements SafeHtml {\n override getTypeName() {\n return BypassType.Html;\n }\n}\nclass SafeStyleImpl extends SafeValueImpl implements SafeStyle {\n override getTypeName() {\n return BypassType.Style;\n }\n}\nclass SafeScriptImpl extends SafeValueImpl implements SafeScript {\n override getTypeName() {\n return BypassType.Script;\n }\n}\nclass SafeUrlImpl extends SafeValueImpl implements SafeUrl {\n override getTypeName() {\n return BypassType.Url;\n }\n}\nclass SafeResourceUrlImpl extends SafeValueImpl implements SafeResourceUrl {\n override getTypeName() {\n return BypassType.ResourceUrl;\n }\n}\n\nexport function unwrapSafeValue(value: SafeValue): string;\nexport function unwrapSafeValue(value: T): T;\nexport function unwrapSafeValue(value: T|SafeValue): T {\n return value instanceof SafeValueImpl ? value.changingThisBreaksApplicationSecurity as any as T :\n value as any as T;\n}\n\n\nexport function allowSanitizationBypassAndThrow(\n value: any, type: BypassType.Html): value is SafeHtml;\nexport function allowSanitizationBypassAndThrow(\n value: any, type: BypassType.ResourceUrl): value is SafeResourceUrl;\nexport function allowSanitizationBypassAndThrow(\n value: any, type: BypassType.Script): value is SafeScript;\nexport function allowSanitizationBypassAndThrow(\n value: any, type: BypassType.Style): value is SafeStyle;\nexport function allowSanitizationBypassAndThrow(value: any, type: BypassType.Url): value is SafeUrl;\nexport function allowSanitizationBypassAndThrow(value: any, type: BypassType): boolean;\nexport function allowSanitizationBypassAndThrow(value: any, type: BypassType): boolean {\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 === BypassType.ResourceUrl && type === BypassType.Url) return true;\n throw new Error(\n `Required a safe ${type}, got a ${actualType} (see https://g.co/ng/security#xss)`);\n }\n return actualType === type;\n}\n\nexport function getSanitizationBypassType(value: any): BypassType|null {\n return value instanceof SafeValueImpl && value.getTypeName() as BypassType || null;\n}\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 */\nexport function bypassSanitizationTrustHtml(trustedHtml: string): SafeHtml {\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 */\nexport function bypassSanitizationTrustStyle(trustedStyle: string): SafeStyle {\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 */\nexport function bypassSanitizationTrustScript(trustedScript: string): SafeScript {\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 */\nexport function bypassSanitizationTrustUrl(trustedUrl: string): SafeUrl {\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 */\nexport function bypassSanitizationTrustResourceUrl(trustedResourceUrl: string): SafeResourceUrl {\n return new SafeResourceUrlImpl(trustedResourceUrl);\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\nimport {trustedHTMLFromString} from '../util/security/trusted_types';\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 */\nexport function getInertBodyHelper(defaultDoc: Document): InertBodyHelper {\n const inertDocumentHelper = new InertDocumentHelper(defaultDoc);\n return isDOMParserAvailable() ? new DOMParserHelper(inertDocumentHelper) : inertDocumentHelper;\n}\n\nexport interface InertBodyHelper {\n /**\n * Get an inert DOM element containing DOM created from the dirty HTML string provided.\n */\n getInertBodyElement: (html: string) => HTMLElement | null;\n}\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 implements InertBodyHelper {\n constructor(private inertDocumentHelper: InertBodyHelper) {}\n\n getInertBodyElement(html: string): HTMLElement|null {\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 `` do not get hoisted to the\n // `` tag. Note that the `` tag is closed implicitly to prevent unclosed tags\n // in `html` from consuming the otherwise explicit `` tag.\n html = '' + html;\n try {\n const body = new window.DOMParser()\n .parseFromString(trustedHTMLFromString(html) as string, 'text/html')\n .body as HTMLBodyElement;\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 } catch {\n return null;\n }\n }\n}\n\n/**\n * Use an HTML5 `template` element, if supported, or an inert body element created via\n * `createHtmlDocument` to create and fill an inert DOM element.\n * This is the fallback strategy if the browser does not support DOMParser.\n */\nclass InertDocumentHelper implements InertBodyHelper {\n private inertDocument: Document;\n\n constructor(private defaultDoc: Document) {\n this.inertDocument = this.defaultDoc.implementation.createHTMLDocument('sanitization-inert');\n\n if (this.inertDocument.body == null) {\n // usually there should be only one body element in the document, but IE doesn't have any, so\n // we need to create one.\n const inertHtml = this.inertDocument.createElement('html');\n this.inertDocument.appendChild(inertHtml);\n const inertBodyElement = this.inertDocument.createElement('body');\n inertHtml.appendChild(inertBodyElement);\n }\n }\n\n getInertBodyElement(html: string): HTMLElement|null {\n // Prefer using