import { HttpEvent, HttpHandler, HttpInterceptor, HttpRequest } from '@angular/common/http';
import { Observable } from 'rxjs';
import { NgxPwaOfflineService } from './offline.service';
import * as i0 from "@angular/core";
/**
 * An interceptor that caches any POST, UPDATE or DELETE requests when the user is offline.
 */
export declare class OfflineRequestInterceptor<OfflineServiceType extends NgxPwaOfflineService> implements HttpInterceptor {
    private readonly offlineService;
    constructor(offlineService: OfflineServiceType);
    intercept<T>(req: HttpRequest<T>, next: HttpHandler): Observable<HttpEvent<T>>;
    private getRequestMetadata;
    private requestShouldBeCached;
    private requestMethodIsPostPatchOrDelete;
    private urlShouldNotBeCached;
    static ɵfac: i0.ɵɵFactoryDeclaration<OfflineRequestInterceptor<any>, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<OfflineRequestInterceptor<any>>;
}