/**
 * @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 { XHR } from '@angular/compiler';
/**
 * An implementation of XHR that uses a template cache to avoid doing an actual
 * XHR.
 *
 * The template cache needs to be built and loaded into window.$templateCache
 * via a separate mechanism.
 */
export declare class CachedXHR extends XHR {
    private _cache;
    constructor();
    get(url: string): Promise<string>;
}