angular-docs-cn/packages/core/src/di/scope.ts

/**
 * @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
 */

import {Type} from '../type';
import {InjectionToken} from './injection_token';


/**
 * An internal token whose presence in an injector indicates that the injector should treat itself
 * as a root scoped injector when processing requests for unknown tokens which may indicate
 * they are provided in the root scope.
 */
export const APP_ROOT = new InjectionToken<boolean>(
    'The presence of this token marks an injector as being the root injector.');