@angular/core/fesm2015/core.js

Angular - the core framework

/**
 * @license Angular v8.2.9
 * (c) 2010-2019 Google LLC. https://angular.io/
 * License: MIT
 */

import { Subject, Subscription, Observable, merge as merge$1 } from 'rxjs';
import { share } from 'rxjs/operators';

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
const ANNOTATIONS = '__annotations__';
const PARAMETERS = '__parameters__';
const PROP_METADATA = '__prop__metadata__';
/**
 * @suppress {globalThis}
 */
function makeDecorator(name, props, parentClass, additionalProcessing, typeFn) {
    const metaCtor = makeMetadataCtor(props);
    function DecoratorFactory(...args) {
        if (this instanceof DecoratorFactory) {
            metaCtor.call(this, ...args);
            return this;
        }
        const annotationInstance = new DecoratorFactory(...args);
        return function TypeDecorator(cls) {
            if (typeFn)
                typeFn(cls, ...args);
            // Use of Object.defineProperty is important since it creates non-enumerable property which
            // prevents the property is copied during subclassing.
            const annotations = cls.hasOwnProperty(ANNOTATIONS) ?
                cls[ANNOTATIONS] :
                Object.defineProperty(cls, ANNOTATIONS, { value: [] })[ANNOTATIONS];
            annotations.push(annotationInstance);
            if (additionalProcessing)
                additionalProcessing(cls);
            return cls;
        };
    }
    if (parentClass) {
        DecoratorFactory.prototype = Object.create(parentClass.prototype);
    }
    DecoratorFactory.prototype.ngMetadataName = name;
    DecoratorFactory.annotationCls = DecoratorFactory;
    return DecoratorFactory;
}
function makeMetadataCtor(props) {
    return function ctor(...args) {
        if (props) {
            const values = props(...args);
            for (const propName in values) {
                this[propName] = values[propName];
            }
        }
    };
}
function makeParamDecorator(name, props, parentClass) {
    const metaCtor = makeMetadataCtor(props);
    function ParamDecoratorFactory(...args) {
        if (this instanceof ParamDecoratorFactory) {
            metaCtor.apply(this, args);
            return this;
        }
        const annotationInstance = new ParamDecoratorFactory(...args);
        ParamDecorator.annotation = annotationInstance;
        return ParamDecorator;
        function ParamDecorator(cls, unusedKey, index) {
            // Use of Object.defineProperty is important since it creates non-enumerable property which
            // prevents the property is copied during subclassing.
            const parameters = cls.hasOwnProperty(PARAMETERS) ?
                cls[PARAMETERS] :
                Object.defineProperty(cls, PARAMETERS, { value: [] })[PARAMETERS];
            // there might be gaps if some in between parameters do not have annotations.
            // we pad with nulls.
            while (parameters.length <= index) {
                parameters.push(null);
            }
            (parameters[index] = parameters[index] || []).push(annotationInstance);
            return cls;
        }
    }
    if (parentClass) {
        ParamDecoratorFactory.prototype = Object.create(parentClass.prototype);
    }
    ParamDecoratorFactory.prototype.ngMetadataName = name;
    ParamDecoratorFactory.annotationCls = ParamDecoratorFactory;
    return ParamDecoratorFactory;
}
function makePropDecorator(name, props, parentClass, additionalProcessing) {
    const metaCtor = makeMetadataCtor(props);
    function PropDecoratorFactory(...args) {
        if (this instanceof PropDecoratorFactory) {
            metaCtor.apply(this, args);
            return this;
        }
        const decoratorInstance = new PropDecoratorFactory(...args);
        function PropDecorator(target, name) {
            const constructor = target.constructor;
            // Use of Object.defineProperty is important since it creates non-enumerable property which
            // prevents the property is copied during subclassing.
            const meta = constructor.hasOwnProperty(PROP_METADATA) ?
                constructor[PROP_METADATA] :
                Object.defineProperty(constructor, PROP_METADATA, { value: {} })[PROP_METADATA];
            meta[name] = meta.hasOwnProperty(name) && meta[name] || [];
            meta[name].unshift(decoratorInstance);
            if (additionalProcessing)
                additionalProcessing(target, name, ...args);
        }
        return PropDecorator;
    }
    if (parentClass) {
        PropDecoratorFactory.prototype = Object.create(parentClass.prototype);
    }
    PropDecoratorFactory.prototype.ngMetadataName = name;
    PropDecoratorFactory.annotationCls = PropDecoratorFactory;
    return PropDecoratorFactory;
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * Type of the Inject decorator / constructor function.
 *
 * \@publicApi
 * @record
 */
function InjectDecorator() { }
// WARNING: interface has both a type and a value, skipping emit
const ɵ0 = /**
 * @param {?} token
 * @return {?}
 */
(token) => ({ token });
/**
 * Inject decorator and metadata.
 *
 * \@Annotation
 * \@publicApi
 * @type {?}
 */
const Inject = makeParamDecorator('Inject', (ɵ0));
/**
 * Type of the Optional decorator / constructor function.
 *
 * \@publicApi
 * @record
 */
function OptionalDecorator() { }
// WARNING: interface has both a type and a value, skipping emit
/**
 * Optional decorator and metadata.
 *
 * \@Annotation
 * \@publicApi
 * @type {?}
 */
const Optional = makeParamDecorator('Optional');
/**
 * Type of the Self decorator / constructor function.
 *
 * \@publicApi
 * @record
 */
function SelfDecorator() { }
// WARNING: interface has both a type and a value, skipping emit
/**
 * Self decorator and metadata.
 *
 * \@Annotation
 * \@publicApi
 * @type {?}
 */
const Self = makeParamDecorator('Self');
/**
 * Type of the SkipSelf decorator / constructor function.
 *
 * \@publicApi
 * @record
 */
function SkipSelfDecorator() { }
// WARNING: interface has both a type and a value, skipping emit
/**
 * SkipSelf decorator and metadata.
 *
 * \@Annotation
 * \@publicApi
 * @type {?}
 */
const SkipSelf = makeParamDecorator('SkipSelf');
/**
 * Type of the Host decorator / constructor function.
 *
 * \@publicApi
 * @record
 */
function HostDecorator() { }
// WARNING: interface has both a type and a value, skipping emit
/**
 * Host decorator and metadata.
 *
 * \@Annotation
 * \@publicApi
 * @type {?}
 */
const Host = makeParamDecorator('Host');
/**
 * Type of the Attribute decorator / constructor function.
 *
 * \@publicApi
 * @record
 */
function AttributeDecorator() { }
// WARNING: interface has both a type and a value, skipping emit
const ɵ1 = /**
 * @param {?=} attributeName
 * @return {?}
 */
(attributeName) => ({ attributeName });
/**
 * Attribute decorator and metadata.
 *
 * \@Annotation
 * \@publicApi
 * @type {?}
 */
const Attribute = makeParamDecorator('Attribute', (ɵ1));

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
/**
 * Injection flags for DI.
 *
 * @publicApi
 */
var InjectFlags;
(function (InjectFlags) {
    // TODO(alxhub): make this 'const' when ngc no longer writes exports of it into ngfactory files.
    /** Check self and check parent injector if needed */
    InjectFlags[InjectFlags["Default"] = 0] = "Default";
    /**
     * Specifies that an injector should retrieve a dependency from any injector until reaching the
     * host element of the current component. (Only used with Element Injector)
     */
    InjectFlags[InjectFlags["Host"] = 1] = "Host";
    /** Don't ascend to ancestors of the node requesting injection. */
    InjectFlags[InjectFlags["Self"] = 2] = "Self";
    /** Skip the node that is requesting injection. */
    InjectFlags[InjectFlags["SkipSelf"] = 4] = "SkipSelf";
    /** Inject `defaultValue` instead if token not found. */
    InjectFlags[InjectFlags["Optional"] = 8] = "Optional";
})(InjectFlags || (InjectFlags = {}));

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
function getClosureSafeProperty(objWithPropertyToExtract) {
    for (let key in objWithPropertyToExtract) {
        if (objWithPropertyToExtract[key] === getClosureSafeProperty) {
            return key;
        }
    }
    throw Error('Could not find renamed property on target object.');
}
/**
 * Sets properties on a target object from a source object, but only if
 * the property doesn't already exist on the target object.
 * @param target The target to set properties on
 * @param source The source of the property keys and values to set
 */
function fillProperties(target, source) {
    for (const key in source) {
        if (source.hasOwnProperty(key) && !target.hasOwnProperty(key)) {
            target[key] = source[key];
        }
    }
}

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
/**
 * Construct an `InjectableDef` which defines how a token will be constructed by the DI system, and
 * in which injectors (if any) it will be available.
 *
 * This should be assigned to a static `ngInjectableDef` field on a type, which will then be an
 * `InjectableType`.
 *
 * Options:
 * * `providedIn` determines which injectors will include the injectable, by either associating it
 *   with an `@NgModule` or other `InjectorType`, or by specifying that this injectable should be
 *   provided in the `'root'` injector, which will be the application-level injector in most apps.
 * * `factory` gives the zero argument function which will create an instance of the injectable.
 *   The factory can call `inject` to access the `Injector` and request injection of dependencies.
 *
 * @codeGenApi
 */
function ɵɵdefineInjectable(opts) {
    return {
        token: opts.token, providedIn: opts.providedIn || null, factory: opts.factory,
        value: undefined,
    };
}
/**
 * @deprecated in v8, delete after v10. This API should be used only be generated code, and that
 * code should now use ɵɵdefineInjectable instead.
 * @publicApi
 */
const defineInjectable = ɵɵdefineInjectable;
/**
 * Construct an `InjectorDef` which configures an injector.
 *
 * This should be assigned to a static `ngInjectorDef` field on a type, which will then be an
 * `InjectorType`.
 *
 * Options:
 *
 * * `factory`: an `InjectorType` is an instantiable type, so a zero argument `factory` function to
 *   create the type must be provided. If that factory function needs to inject arguments, it can
 *   use the `inject` function.
 * * `providers`: an optional array of providers to add to the injector. Each provider must
 *   either have a factory or point to a type which has an `ngInjectableDef` static property (the
 *   type must be an `InjectableType`).
 * * `imports`: an optional array of imports of other `InjectorType`s or `InjectorTypeWithModule`s
 *   whose providers will also be added to the injector. Locally provided types will override
 *   providers from imports.
 *
 * @publicApi
 */
function ɵɵdefineInjector(options) {
    return {
        factory: options.factory, providers: options.providers || [], imports: options.imports || [],
    };
}
/**
 * Read the `ngInjectableDef` for `type` in a way which is immune to accidentally reading inherited
 * value.
 *
 * @param type A type which may have its own (non-inherited) `ngInjectableDef`.
 */
function getInjectableDef(type) {
    const def = type[NG_INJECTABLE_DEF];
    // The definition read above may come from a base class. `hasOwnProperty` is not sufficient to
    // distinguish this case, as in older browsers (e.g. IE10) static property inheritance is
    // implemented by copying the properties.
    //
    // Instead, the ngInjectableDef's token is compared to the type, and if they don't match then the
    // property was not defined directly on the type itself, and was likely inherited. The definition
    // is only returned if the type matches the def.token.
    return def && def.token === type ? def : null;
}
/**
 * Read the `ngInjectableDef` for `type` or read the `ngInjectableDef` from one of its ancestors.
 *
 * @param type A type which may have `ngInjectableDef`, via inheritance.
 *
 * @deprecated Will be removed in v10, where an error will occur in the scenario if we find the
 * `ngInjectableDef` on an ancestor only.
 */
function getInheritedInjectableDef(type) {
    if (type && type[NG_INJECTABLE_DEF]) {
        // TODO(FW-1307): Re-add ngDevMode when closure can handle it
        // ngDevMode &&
        console.warn(`DEPRECATED: DI is instantiating a token "${type.name}" that inherits its @Injectable decorator but does not provide one itself.\n` +
            `This will become an error in v10. Please add @Injectable() to the "${type.name}" class.`);
        return type[NG_INJECTABLE_DEF];
    }
    else {
        return null;
    }
}
/**
 * Read the `ngInjectorDef` type in a way which is immune to accidentally reading inherited value.
 *
 * @param type type which may have `ngInjectorDef`
 */
function getInjectorDef(type) {
    return type && type.hasOwnProperty(NG_INJECTOR_DEF) ? type[NG_INJECTOR_DEF] : null;
}
const NG_INJECTABLE_DEF = getClosureSafeProperty({ ngInjectableDef: getClosureSafeProperty });
const NG_INJECTOR_DEF = getClosureSafeProperty({ ngInjectorDef: getClosureSafeProperty });

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
function stringify(token) {
    if (typeof token === 'string') {
        return token;
    }
    if (token instanceof Array) {
        return '[' + token.map(stringify).join(', ') + ']';
    }
    if (token == null) {
        return '' + token;
    }
    if (token.overriddenName) {
        return `${token.overriddenName}`;
    }
    if (token.name) {
        return `${token.name}`;
    }
    const res = token.toString();
    if (res == null) {
        return '' + res;
    }
    const newLineIndex = res.indexOf('\n');
    return newLineIndex === -1 ? res : res.substring(0, newLineIndex);
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * An interface that a function passed into {\@link forwardRef} has to implement.
 *
 * \@usageNotes
 * ### Example
 *
 * {\@example core/di/ts/forward_ref/forward_ref_spec.ts region='forward_ref_fn'}
 * \@publicApi
 * @record
 */
function ForwardRefFn() { }
/** @type {?} */
const __forward_ref__ = getClosureSafeProperty({ __forward_ref__: getClosureSafeProperty });
/**
 * Allows to refer to references which are not yet defined.
 *
 * For instance, `forwardRef` is used when the `token` which we need to refer to for the purposes of
 * DI is declared, but not yet defined. It is also used when the `token` which we use when creating
 * a query is not yet defined.
 *
 * \@usageNotes
 * ### Example
 * {\@example core/di/ts/forward_ref/forward_ref_spec.ts region='forward_ref'}
 * \@publicApi
 * @param {?} forwardRefFn
 * @return {?}
 */
function forwardRef(forwardRefFn) {
    ((/** @type {?} */ (forwardRefFn))).__forward_ref__ = forwardRef;
    ((/** @type {?} */ (forwardRefFn))).toString = (/**
     * @return {?}
     */
    function () { return stringify(this()); });
    return ((/** @type {?} */ ((/** @type {?} */ (forwardRefFn)))));
}
/**
 * Lazily retrieves the reference value from a forwardRef.
 *
 * Acts as the identity function when given a non-forward-ref value.
 *
 * \@usageNotes
 * ### Example
 *
 * {\@example core/di/ts/forward_ref/forward_ref_spec.ts region='resolve_forward_ref'}
 *
 * @see `forwardRef`
 * \@publicApi
 * @template T
 * @param {?} type
 * @return {?}
 */
function resolveForwardRef(type) {
    /** @type {?} */
    const fn = type;
    if (typeof fn === 'function' && fn.hasOwnProperty(__forward_ref__) &&
        fn.__forward_ref__ === forwardRef) {
        return fn();
    }
    else {
        return type;
    }
}

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
const __globalThis = typeof globalThis !== 'undefined' && globalThis;
const __window = typeof window !== 'undefined' && window;
const __self = typeof self !== 'undefined' && typeof WorkerGlobalScope !== 'undefined' &&
    self instanceof WorkerGlobalScope && self;
const __global = typeof global !== 'undefined' && global;
// Always use __globalThis if available, which is the spec-defined global variable across all
// environments, then fallback to __global first, because in Node tests both __global and
// __window may be defined and _global should be __global in that case.
const _global = __globalThis || __global || __window || __self;

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
var R3ResolvedDependencyType;
(function (R3ResolvedDependencyType) {
    R3ResolvedDependencyType[R3ResolvedDependencyType["Token"] = 0] = "Token";
    R3ResolvedDependencyType[R3ResolvedDependencyType["Attribute"] = 1] = "Attribute";
    R3ResolvedDependencyType[R3ResolvedDependencyType["ChangeDetectorRef"] = 2] = "ChangeDetectorRef";
})(R3ResolvedDependencyType || (R3ResolvedDependencyType = {}));

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
function getCompilerFacade() {
    const globalNg = _global['ng'];
    if (!globalNg || !globalNg.ɵcompilerFacade) {
        throw new Error(`Angular JIT compilation failed: '@angular/compiler' not loaded!\n` +
            `  - JIT compilation is discouraged for production use-cases! Consider AOT mode instead.\n` +
            `  - Did you bootstrap using '@angular/platform-browser-dynamic' or '@angular/platform-server'?\n` +
            `  - Alternatively provide the compiler with 'import "@angular/compiler";' before bootstrapping.`);
    }
    return globalNg.ɵcompilerFacade;
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * Creates a token that can be used in a DI Provider.
 *
 * Use an `InjectionToken` whenever the type you are injecting is not reified (does not have a
 * runtime representation) such as when injecting an interface, callable type, array or
 * parameterized type.
 *
 * `InjectionToken` is parameterized on `T` which is the type of object which will be returned by
 * the `Injector`. This provides additional level of type safety.
 *
 * ```
 * interface MyInterface {...}
 * var myInterface = injector.get(new InjectionToken<MyInterface>('SomeToken'));
 * // myInterface is inferred to be MyInterface.
 * ```
 *
 * When creating an `InjectionToken`, you can optionally specify a factory function which returns
 * (possibly by creating) a default value of the parameterized type `T`. This sets up the
 * `InjectionToken` using this factory as a provider as if it was defined explicitly in the
 * application's root injector. If the factory function, which takes zero arguments, needs to inject
 * dependencies, it can do so using the `inject` function. See below for an example.
 *
 * Additionally, if a `factory` is specified you can also specify the `providedIn` option, which
 * overrides the above behavior and marks the token as belonging to a particular `\@NgModule`. As
 * mentioned above, `'root'` is the default value for `providedIn`.
 *
 * \@usageNotes
 * ### Basic Example
 *
 * ### Plain InjectionToken
 *
 * {\@example core/di/ts/injector_spec.ts region='InjectionToken'}
 *
 * ### Tree-shakable InjectionToken
 *
 * {\@example core/di/ts/injector_spec.ts region='ShakableInjectionToken'}
 *
 *
 * \@publicApi
 * @template T
 */
class InjectionToken {
    /**
     * @param {?} _desc
     * @param {?=} options
     */
    constructor(_desc, options) {
        this._desc = _desc;
        /**
         * \@internal
         */
        this.ngMetadataName = 'InjectionToken';
        /** @nocollapse */ this.ngInjectableDef = undefined;
        if (typeof options == 'number') {
            // This is a special hack to assign __NG_ELEMENT_ID__ to this instance.
            // __NG_ELEMENT_ID__ is Used by Ivy to determine bloom filter id.
            // We are using it to assign `-1` which is used to identify `Injector`.
            ((/** @type {?} */ (this))).__NG_ELEMENT_ID__ = options;
        }
        else if (options !== undefined) {
            /** @nocollapse */ this.ngInjectableDef = ɵɵdefineInjectable({
                token: this,
                providedIn: options.providedIn || 'root',
                factory: options.factory,
            });
        }
    }
    /**
     * @return {?}
     */
    toString() { return `InjectionToken ${this._desc}`; }
}
if (false) {
    /**
     * \@internal
     * @type {?}
     */
    InjectionToken.prototype.ngMetadataName;
    /** @type {?} */
    InjectionToken.prototype.ngInjectableDef;
    /**
     * @type {?}
     * @protected
     */
    InjectionToken.prototype._desc;
}
/**
 * @record
 * @template T
 */
function InjectableDefToken() { }
if (false) {
    /** @type {?} */
    InjectableDefToken.prototype.ngInjectableDef;
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * An InjectionToken that gets the current `Injector` for `createInjector()`-style injectors.
 *
 * Requesting this token instead of `Injector` allows `StaticInjector` to be tree-shaken from a
 * project.
 *
 * \@publicApi
 * @type {?}
 */
const INJECTOR = new InjectionToken('INJECTOR', (/** @type {?} */ (-1)));
/** @type {?} */
const _THROW_IF_NOT_FOUND = new Object();
/** @type {?} */
const THROW_IF_NOT_FOUND = _THROW_IF_NOT_FOUND;
/** @type {?} */
const NG_TEMP_TOKEN_PATH = 'ngTempTokenPath';
/** @type {?} */
const NG_TOKEN_PATH = 'ngTokenPath';
/** @type {?} */
const NEW_LINE = /\n/gm;
/** @type {?} */
const NO_NEW_LINE = 'ɵ';
/** @type {?} */
const SOURCE = '__source';
const ɵ0$1 = getClosureSafeProperty;
/** @type {?} */
const USE_VALUE = getClosureSafeProperty({ provide: String, useValue: ɵ0$1 });
/**
 * Current injector value used by `inject`.
 * - `undefined`: it is an error to call `inject`
 * - `null`: `inject` can be called but there is no injector (limp-mode).
 * - Injector instance: Use the injector for resolution.
 * @type {?}
 */
let _currentInjector = undefined;
/**
 * @param {?} injector
 * @return {?}
 */
function setCurrentInjector(injector) {
    /** @type {?} */
    const former = _currentInjector;
    _currentInjector = injector;
    return former;
}
/**
 * Current implementation of inject.
 *
 * By default, it is `injectInjectorOnly`, which makes it `Injector`-only aware. It can be changed
 * to `directiveInject`, which brings in the `NodeInjector` system of ivy. It is designed this
 * way for two reasons:
 *  1. `Injector` should not depend on ivy logic.
 *  2. To maintain tree shake-ability we don't want to bring in unnecessary code.
 * @type {?}
 */
let _injectImplementation;
/**
 * Sets the current inject implementation.
 * @param {?} impl
 * @return {?}
 */
function setInjectImplementation(impl) {
    /** @type {?} */
    const previous = _injectImplementation;
    _injectImplementation = impl;
    return previous;
}
/**
 * @template T
 * @param {?} token
 * @param {?=} flags
 * @return {?}
 */
function injectInjectorOnly(token, flags = InjectFlags.Default) {
    if (_currentInjector === undefined) {
        throw new Error(`inject() must be called from an injection context`);
    }
    else if (_currentInjector === null) {
        return injectRootLimpMode(token, undefined, flags);
    }
    else {
        return _currentInjector.get(token, flags & InjectFlags.Optional ? null : undefined, flags);
    }
}
/**
 * @template T
 * @param {?} token
 * @param {?=} flags
 * @return {?}
 */
function ɵɵinject(token, flags = InjectFlags.Default) {
    return (_injectImplementation || injectInjectorOnly)(token, flags);
}
/**
 * Injects a token from the currently active injector.
 *
 * Must be used in the context of a factory function such as one defined for an
 * `InjectionToken`. Throws an error if not called from such a context.
 *
 * Within such a factory function, using this function to request injection of a dependency
 * is faster and more type-safe than providing an additional array of dependencies
 * (as has been common with `useFactory` providers).
 *
 * \@param token The injection token for the dependency to be injected.
 * \@param flags Optional flags that control how injection is executed.
 * The flags correspond to injection strategies that can be specified with
 * parameter decorators `\@Host`, `\@Self`, `\@SkipSef`, and `\@Optional`.
 * \@return True if injection is successful, null otherwise.
 *
 * \@usageNotes
 *
 * ### Example
 *
 * {\@example core/di/ts/injector_spec.ts region='ShakableInjectionToken'}
 *
 * \@publicApi
 * @type {?}
 */
const inject = ɵɵinject;
/**
 * Injects `root` tokens in limp mode.
 *
 * If no injector exists, we can still inject tree-shakable providers which have `providedIn` set to
 * `"root"`. This is known as the limp mode injection. In such case the value is stored in the
 * `InjectableDef`.
 * @template T
 * @param {?} token
 * @param {?} notFoundValue
 * @param {?} flags
 * @return {?}
 */
function injectRootLimpMode(token, notFoundValue, flags) {
    /** @type {?} */
    const injectableDef = getInjectableDef(token);
    if (injectableDef && injectableDef.providedIn == 'root') {
        return injectableDef.value === undefined ? injectableDef.value = injectableDef.factory() :
            injectableDef.value;
    }
    if (flags & InjectFlags.Optional)
        return null;
    if (notFoundValue !== undefined)
        return notFoundValue;
    throw new Error(`Injector: NOT_FOUND [${stringify(token)}]`);
}
/**
 * @param {?} types
 * @return {?}
 */
function injectArgs(types) {
    /** @type {?} */
    const args = [];
    for (let i = 0; i < types.length; i++) {
        /** @type {?} */
        const arg = resolveForwardRef(types[i]);
        if (Array.isArray(arg)) {
            if (arg.length === 0) {
                throw new Error('Arguments array must have arguments.');
            }
            /** @type {?} */
            let type = undefined;
            /** @type {?} */
            let flags = InjectFlags.Default;
            for (let j = 0; j < arg.length; j++) {
                /** @type {?} */
                const meta = arg[j];
                if (meta instanceof Optional || meta.ngMetadataName === 'Optional' || meta === Optional) {
                    flags |= InjectFlags.Optional;
                }
                else if (meta instanceof SkipSelf || meta.ngMetadataName === 'SkipSelf' || meta === SkipSelf) {
                    flags |= InjectFlags.SkipSelf;
                }
                else if (meta instanceof Self || meta.ngMetadataName === 'Self' || meta === Self) {
                    flags |= InjectFlags.Self;
                }
                else if (meta instanceof Inject || meta === Inject) {
                    type = meta.token;
                }
                else {
                    type = meta;
                }
            }
            args.push(ɵɵinject((/** @type {?} */ (type)), flags));
        }
        else {
            args.push(ɵɵinject(arg));
        }
    }
    return args;
}
class NullInjector {
    /**
     * @param {?} token
     * @param {?=} notFoundValue
     * @return {?}
     */
    get(token, notFoundValue = THROW_IF_NOT_FOUND) {
        if (notFoundValue === THROW_IF_NOT_FOUND) {
            // Intentionally left behind: With dev tools open the debugger will stop here. There is no
            // reason why correctly written application should cause this exception.
            // TODO(misko): uncomment the next line once `ngDevMode` works with closure.
            // if(ngDevMode) debugger;
            /** @type {?} */
            const error = new Error(`NullInjectorError: No provider for ${stringify(token)}!`);
            error.name = 'NullInjectorError';
            throw error;
        }
        return notFoundValue;
    }
}
/**
 * @param {?} e
 * @param {?} token
 * @param {?} injectorErrorName
 * @param {?} source
 * @return {?}
 */
function catchInjectorError(e, token, injectorErrorName, source) {
    /** @type {?} */
    const tokenPath = e[NG_TEMP_TOKEN_PATH];
    if (token[SOURCE]) {
        tokenPath.unshift(token[SOURCE]);
    }
    e.message = formatError('\n' + e.message, tokenPath, injectorErrorName, source);
    e[NG_TOKEN_PATH] = tokenPath;
    e[NG_TEMP_TOKEN_PATH] = null;
    throw e;
}
/**
 * @param {?} text
 * @param {?} obj
 * @param {?} injectorErrorName
 * @param {?=} source
 * @return {?}
 */
function formatError(text, obj, injectorErrorName, source = null) {
    text = text && text.charAt(0) === '\n' && text.charAt(1) == NO_NEW_LINE ? text.substr(2) : text;
    /** @type {?} */
    let context = stringify(obj);
    if (obj instanceof Array) {
        context = obj.map(stringify).join(' -> ');
    }
    else if (typeof obj === 'object') {
        /** @type {?} */
        let parts = (/** @type {?} */ ([]));
        for (let key in obj) {
            if (obj.hasOwnProperty(key)) {
                /** @type {?} */
                let value = obj[key];
                parts.push(key + ':' + (typeof value === 'string' ? JSON.stringify(value) : stringify(value)));
            }
        }
        context = `{${parts.join(', ')}}`;
    }
    return `${injectorErrorName}${source ? '(' + source + ')' : ''}[${context}]: ${text.replace(NEW_LINE, '\n  ')}`;
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * A mapping of the \@angular/core API surface used in generated expressions to the actual symbols.
 *
 * This should be kept up to date with the public exports of \@angular/core.
 * @type {?}
 */
const angularCoreDiEnv = {
    'ɵɵdefineInjectable': ɵɵdefineInjectable,
    'ɵɵdefineInjector': ɵɵdefineInjector,
    'ɵɵinject': ɵɵinject,
    'ɵɵgetFactoryOf': getFactoryOf,
};
/**
 * @template T
 * @param {?} type
 * @return {?}
 */
function getFactoryOf(type) {
    /** @type {?} */
    const typeAny = (/** @type {?} */ (type));
    /** @type {?} */
    const def = getInjectableDef(typeAny) || getInjectorDef(typeAny);
    if (!def || def.factory === undefined) {
        return null;
    }
    return def.factory;
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
/**
 * Represents an instance of an NgModule created via a {\@link NgModuleFactory}.
 *
 * `NgModuleRef` provides access to the NgModule Instance as well other objects related to this
 * NgModule Instance.
 *
 * \@publicApi
 * @abstract
 * @template T
 */
class NgModuleRef {
}
if (false) {
    /**
     * The injector that contains all of the providers of the NgModule.
     * @abstract
     * @return {?}
     */
    NgModuleRef.prototype.injector = function () { };
    /**
     * The ComponentFactoryResolver to get hold of the ComponentFactories
     * declared in the `entryComponents` property of the module.
     * @abstract
     * @return {?}
     */
    NgModuleRef.prototype.componentFactoryResolver = function () { };
    /**
     * The NgModule instance.
     * @abstract
     * @return {?}
     */
    NgModuleRef.prototype.instance = function () { };
    /**
     * Destroys the module instance and all of the data structures associated with it.
     * @abstract
     * @return {?}
     */
    NgModuleRef.prototype.destroy = function () { };
    /**
     * Allows to register a callback that will be called when the module is destroyed.
     * @abstract
     * @param {?} callback
     * @return {?}
     */
    NgModuleRef.prototype.onDestroy = function (callback) { };
}
/**
 * @record
 * @template T
 */
function InternalNgModuleRef() { }
if (false) {
    /** @type {?} */
    InternalNgModuleRef.prototype._bootstrapComponents;
}
/**
 * \@publicApi
 * @abstract
 * @template T
 */
class NgModuleFactory {
}
if (false) {
    /**
     * @abstract
     * @return {?}
     */
    NgModuleFactory.prototype.moduleType = function () { };
    /**
     * @abstract
     * @param {?} parentInjector
     * @return {?}
     */
    NgModuleFactory.prototype.create = function (parentInjector) { };
}

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
/**
* Equivalent to ES6 spread, add each item to an array.
*
* @param items The items to add
* @param arr The array to which you want to add the items
*/
function addAllToArray(items, arr) {
    for (let i = 0; i < items.length; i++) {
        arr.push(items[i]);
    }
}
/**
 * Flattens an array.
 */
function flatten(list, dst) {
    if (dst === undefined)
        dst = list;
    for (let i = 0; i < list.length; i++) {
        let item = list[i];
        if (Array.isArray(item)) {
            // we need to inline it.
            if (dst === list) {
                // Our assumption that the list was already flat was wrong and
                // we need to clone flat since we need to write to it.
                dst = list.slice(0, i);
            }
            flatten(item, dst);
        }
        else if (dst !== list) {
            dst.push(item);
        }
    }
    return dst;
}
function deepForEach(input, fn) {
    input.forEach(value => Array.isArray(value) ? deepForEach(value, fn) : fn(value));
}
function addToArray(arr, index, value) {
    // perf: array.push is faster than array.splice!
    if (index >= arr.length) {
        arr.push(value);
    }
    else {
        arr.splice(index, 0, value);
    }
}
function removeFromArray(arr, index) {
    // perf: array.pop is faster than array.splice!
    if (index >= arr.length - 1) {
        return arr.pop();
    }
    else {
        return arr.splice(index, 1)[0];
    }
}

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
function assertNumber(actual, msg) {
    if (typeof actual != 'number') {
        throwError(msg);
    }
}
function assertEqual(actual, expected, msg) {
    if (actual != expected) {
        throwError(msg);
    }
}
function assertNotEqual(actual, expected, msg) {
    if (actual == expected) {
        throwError(msg);
    }
}
function assertSame(actual, expected, msg) {
    if (actual !== expected) {
        throwError(msg);
    }
}
function assertNotSame(actual, expected, msg) {
    if (actual === expected) {
        throwError(msg);
    }
}
function assertLessThan(actual, expected, msg) {
    if (actual >= expected) {
        throwError(msg);
    }
}
function assertGreaterThan(actual, expected, msg) {
    if (actual <= expected) {
        throwError(msg);
    }
}
function assertNotDefined(actual, msg) {
    if (actual != null) {
        throwError(msg);
    }
}
function assertDefined(actual, msg) {
    if (actual == null) {
        throwError(msg);
    }
}
function throwError(msg) {
    // tslint:disable-next-line
    debugger; // Left intentionally for better debugger experience.
    throw new Error(`ASSERTION ERROR: ${msg}`);
}
function assertDomNode(node) {
    // If we're in a worker, `Node` will not be defined.
    assertEqual((typeof Node !== 'undefined' && node instanceof Node) ||
        (typeof node === 'object' && node != null &&
            node.constructor.name === 'WebWorkerRenderNode'), true, `The provided value must be an instance of a DOM Node but got ${stringify(node)}`);
}
function assertDataInRange(arr, index) {
    const maxLen = arr ? arr.length : 0;
    assertLessThan(index, maxLen, `Index expected to be less than ${maxLen} but got ${index}`);
}

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
function ngDevModeResetPerfCounters() {
    const locationString = typeof location !== 'undefined' ? location.toString() : '';
    const newCounters = {
        namedConstructors: locationString.indexOf('ngDevMode=namedConstructors') != -1,
        firstTemplatePass: 0,
        tNode: 0,
        tView: 0,
        rendererCreateTextNode: 0,
        rendererSetText: 0,
        rendererCreateElement: 0,
        rendererAddEventListener: 0,
        rendererSetAttribute: 0,
        rendererRemoveAttribute: 0,
        rendererSetProperty: 0,
        rendererSetClassName: 0,
        rendererAddClass: 0,
        rendererRemoveClass: 0,
        rendererSetStyle: 0,
        rendererRemoveStyle: 0,
        rendererDestroy: 0,
        rendererDestroyNode: 0,
        rendererMoveNode: 0,
        rendererRemoveNode: 0,
        rendererAppendChild: 0,
        rendererInsertBefore: 0,
        rendererCreateComment: 0,
        styleMap: 0,
        styleMapCacheMiss: 0,
        classMap: 0,
        classMapCacheMiss: 0,
        styleProp: 0,
        stylePropCacheMiss: 0,
        classProp: 0,
        classPropCacheMiss: 0,
        flushStyling: 0,
        classesApplied: 0,
        stylesApplied: 0,
        stylingWritePersistedState: 0,
        stylingReadPersistedState: 0,
    };
    // Make sure to refer to ngDevMode as ['ngDevMode'] for closure.
    const allowNgDevModeTrue = locationString.indexOf('ngDevMode=false') === -1;
    _global['ngDevMode'] = allowNgDevModeTrue && newCounters;
    return newCounters;
}
/**
 * This checks to see if the `ngDevMode` has been set. If yes,
 * then we honor it, otherwise we default to dev mode with additional checks.
 *
 * The idea is that unless we are doing production build where we explicitly
 * set `ngDevMode == false` we should be helping the developer by providing
 * as much early warning and errors as possible.
 *
 * NOTE: changes to the `ngDevMode` name must be synced with `compiler-cli/src/tooling.ts`.
 */
if (typeof ngDevMode === 'undefined' || ngDevMode) {
    ngDevModeResetPerfCounters();
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
/** @enum {number} */
const ChangeDetectionStrategy = {
    /**
     * Use the `CheckOnce` strategy, meaning that automatic change detection is deactivated
     * until reactivated by setting the strategy to `Default` (`CheckAlways`).
     * Change detection can still be explicitly invoked.
     * This strategy applies to all child directives and cannot be overridden.
     */
    OnPush: 0,
    /**
     * Use the default `CheckAlways` strategy, in which change detection is automatic until
     * explicitly deactivated.
     */
    Default: 1,
};
ChangeDetectionStrategy[ChangeDetectionStrategy.OnPush] = 'OnPush';
ChangeDetectionStrategy[ChangeDetectionStrategy.Default] = 'Default';
/** @enum {number} */
const ChangeDetectorStatus = {
    /**
     * A state in which, after calling `detectChanges()`, the change detector
     * state becomes `Checked`, and must be explicitly invoked or reactivated.
     */
    CheckOnce: 0,
    /**
     * A state in which change detection is skipped until the change detector mode
     * becomes `CheckOnce`.
     */
    Checked: 1,
    /**
     * A state in which change detection continues automatically until explicitly
     * deactivated.
     */
    CheckAlways: 2,
    /**
     * A state in which a change detector sub tree is not a part of the main tree and
     * should be skipped.
     */
    Detached: 3,
    /**
     * Indicates that the change detector encountered an error checking a binding
     * or calling a directive lifecycle method and is now in an inconsistent state. Change
     * detectors in this state do not detect changes.
     */
    Errored: 4,
    /**
     * Indicates that the change detector has been destroyed.
     */
    Destroyed: 5,
};
ChangeDetectorStatus[ChangeDetectorStatus.CheckOnce] = 'CheckOnce';
ChangeDetectorStatus[ChangeDetectorStatus.Checked] = 'Checked';
ChangeDetectorStatus[ChangeDetectorStatus.CheckAlways] = 'CheckAlways';
ChangeDetectorStatus[ChangeDetectorStatus.Detached] = 'Detached';
ChangeDetectorStatus[ChangeDetectorStatus.Errored] = 'Errored';
ChangeDetectorStatus[ChangeDetectorStatus.Destroyed] = 'Destroyed';
/**
 * Reports whether a given strategy is currently the default for change detection.
 * @see `ChangeDetectorStatus` / `ChangeDetectorRef`
 * @param {?} changeDetectionStrategy The strategy to check.
 * @return {?} True if the given strategy is the current default, false otherwise.
 */
function isDefaultChangeDetectionStrategy(changeDetectionStrategy) {
    return changeDetectionStrategy == null ||
        changeDetectionStrategy === ChangeDetectionStrategy.Default;
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
/** @enum {number} */
const ViewEncapsulation = {
    /**
     * Emulate `Native` scoping of styles by adding an attribute containing surrogate id to the Host
     * Element and pre-processing the style rules provided via {@link Component#styles styles} or
     * {@link Component#styleUrls styleUrls}, and adding the new Host Element attribute to all
     * selectors.
     *
     * This is the default option.
     */
    Emulated: 0,
    /**
     * @deprecated v6.1.0 - use {ViewEncapsulation.ShadowDom} instead.
     * Use the native encapsulation mechanism of the renderer.
     *
     * For the DOM this means using the deprecated [Shadow DOM
     * v0](https://w3c.github.io/webcomponents/spec/shadow/) and
     * creating a ShadowRoot for Component's Host Element.
     */
    Native: 1,
    /**
     * Don't provide any template or style encapsulation.
     */
    None: 2,
    /**
     * Use Shadow DOM to encapsulate styles.
     *
     * For the DOM this means using modern [Shadow
     * DOM](https://w3c.github.io/webcomponents/spec/shadow/) and
     * creating a ShadowRoot for Component's Host Element.
     */
    ShadowDom: 3,
};
ViewEncapsulation[ViewEncapsulation.Emulated] = 'Emulated';
ViewEncapsulation[ViewEncapsulation.Native] = 'Native';
ViewEncapsulation[ViewEncapsulation.None] = 'None';
ViewEncapsulation[ViewEncapsulation.ShadowDom] = 'ShadowDom';

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
/**
 * Convince closure compiler that the wrapped function has no side-effects.
 *
 * Closure compiler always assumes that `toString` has no side-effects. We use this quirk to
 * allow us to execute a function but have closure compiler mark the call as no-side-effects.
 * It is important that the return value for the `noSideEffects` function be assigned
 * to something which is retained otherwise the call to `noSideEffects` will be removed by closure
 * compiler.
 */
function noSideEffects(fn) {
    return '' + { toString: fn };
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * This file contains reuseable "empty" symbols that can be used as default return values
 * in different parts of the rendering code. Because the same symbols are returned, this
 * allows for identity checks against these values to be consistently used by the framework
 * code.
 * @type {?}
 */
const EMPTY_OBJ = {};
/** @type {?} */
const EMPTY_ARRAY = [];
// freezing the values prevents any code from accidentally inserting new values in
if (typeof ngDevMode !== 'undefined' && ngDevMode) {
    // These property accesses can be ignored because ngDevMode will be set to false
    // when optimizing code and the whole if statement will be dropped.
    // tslint:disable-next-line:no-toplevel-property-access
    Object.freeze(EMPTY_OBJ);
    // tslint:disable-next-line:no-toplevel-property-access
    Object.freeze(EMPTY_ARRAY);
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/** @type {?} */
const NG_COMPONENT_DEF = getClosureSafeProperty({ ngComponentDef: getClosureSafeProperty });
/** @type {?} */
const NG_DIRECTIVE_DEF = getClosureSafeProperty({ ngDirectiveDef: getClosureSafeProperty });
/** @type {?} */
const NG_PIPE_DEF = getClosureSafeProperty({ ngPipeDef: getClosureSafeProperty });
/** @type {?} */
const NG_MODULE_DEF = getClosureSafeProperty({ ngModuleDef: getClosureSafeProperty });
/** @type {?} */
const NG_LOCALE_ID_DEF = getClosureSafeProperty({ ngLocaleIdDef: getClosureSafeProperty });
/** @type {?} */
const NG_BASE_DEF = getClosureSafeProperty({ ngBaseDef: getClosureSafeProperty });
// TODO(misko): This is wrong. The NG_ELEMENT_ID should never be minified.
/**
 * If a directive is diPublic, bloomAdd sets a property on the type with this constant as
 * the key and the directive's unique ID as the value. This allows us to map directives to their
 * bloom filter bit for DI.
 * @type {?}
 */
const NG_ELEMENT_ID = getClosureSafeProperty({ __NG_ELEMENT_ID__: getClosureSafeProperty });

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/** @type {?} */
let _renderCompCount = 0;
/**
 * Create a component definition object.
 *
 *
 * # Example
 * ```
 * class MyDirective {
 *   // Generated by Angular Template Compiler
 *   // [Symbol] syntax will not be supported by TypeScript until v2.7
 *   static ngComponentDef = defineComponent({
 *     ...
 *   });
 * }
 * ```
 * \@codeGenApi
 * @template T
 * @param {?} componentDefinition
 * @return {?}
 */
function ɵɵdefineComponent(componentDefinition) {
    /** @type {?} */
    const type = componentDefinition.type;
    /** @type {?} */
    const typePrototype = type.prototype;
    /** @type {?} */
    const declaredInputs = (/** @type {?} */ ({}));
    /** @type {?} */
    const def = {
        type: type,
        providersResolver: null,
        consts: componentDefinition.consts,
        vars: componentDefinition.vars,
        factory: componentDefinition.factory,
        template: componentDefinition.template || (/** @type {?} */ (null)),
        ngContentSelectors: componentDefinition.ngContentSelectors,
        hostBindings: componentDefinition.hostBindings || null,
        contentQueries: componentDefinition.contentQueries || null,
        declaredInputs: declaredInputs,
        inputs: (/** @type {?} */ (null)),
        // assigned in noSideEffects
        outputs: (/** @type {?} */ (null)),
        // assigned in noSideEffects
        exportAs: componentDefinition.exportAs || null,
        onChanges: null,
        onInit: typePrototype.ngOnInit || null,
        doCheck: typePrototype.ngDoCheck || null,
        afterContentInit: typePrototype.ngAfterContentInit || null,
        afterContentChecked: typePrototype.ngAfterContentChecked || null,
        afterViewInit: typePrototype.ngAfterViewInit || null,
        afterViewChecked: typePrototype.ngAfterViewChecked || null,
        onDestroy: typePrototype.ngOnDestroy || null,
        onPush: componentDefinition.changeDetection === ChangeDetectionStrategy.OnPush,
        directiveDefs: (/** @type {?} */ (null)),
        // assigned in noSideEffects
        pipeDefs: (/** @type {?} */ (null)),
        // assigned in noSideEffects
        selectors: componentDefinition.selectors,
        viewQuery: componentDefinition.viewQuery || null,
        features: (/** @type {?} */ (componentDefinition.features)) || null,
        data: componentDefinition.data || {},
        // TODO(misko): convert ViewEncapsulation into const enum