import { HttpInterceptor, HttpRequest, HttpHandler, HttpEvent } from '@angular/common/http';
import { Observable } from 'rxjs/Observable';
import { HttpCache } from '../../cache/http-cache';
export declare class CachingInterceptor implements HttpInterceptor {
    private cache;
    constructor(cache: HttpCache);
    intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>>;
}