angular2/es6/prod/src/core/di/injector.js

Angular 2 - a web framework for modern web apps

import { CONST_EXPR } from 'angular2/src/facade/lang';
import { unimplemented } from 'angular2/src/facade/exceptions';
const _THROW_IF_NOT_FOUND = CONST_EXPR(new Object());
export const THROW_IF_NOT_FOUND = _THROW_IF_NOT_FOUND;
export class Injector {
    /**
     * Retrieves an instance from the injector based on the provided token.
     * If not found:
     * - Throws {@link NoProviderError} if no `notFoundValue` that is not equal to
     * Injector.THROW_IF_NOT_FOUND is given
     * - Returns the `notFoundValue` otherwise
     *
     * ### Example ([live demo](http://plnkr.co/edit/HeXSHg?p=preview))
     *
     * ```typescript
     * var injector = ReflectiveInjector.resolveAndCreate([
     *   provide("validToken", {useValue: "Value"})
     * ]);
     * expect(injector.get("validToken")).toEqual("Value");
     * expect(() => injector.get("invalidToken")).toThrowError();
     * ```
     *
     * `Injector` returns itself when given `Injector` as a token.
     *
     * ```typescript
     * var injector = ReflectiveInjector.resolveAndCreate([]);
     * expect(injector.get(Injector)).toBe(injector);
     * ```
     */
    get(token, notFoundValue) { return unimplemented(); }
}
Injector.THROW_IF_NOT_FOUND = _THROW_IF_NOT_FOUND;