import { TransferState } from '@angular/platform-browser';
import { NgZone } from "@angular/core";
import { HttpHandler, HttpInterceptor, HttpRequest } from "@angular/common/http";
import * as i0 from "@angular/core";
export declare class ServerStateInterceptor implements HttpInterceptor {
    private transferState;
    private ngZone;
    constructor(transferState: TransferState, ngZone: NgZone);
    intercept(req: HttpRequest<any>, next: HttpHandler): import("rxjs").Observable<import("@angular/common/http").HttpEvent<any>>;
    static ɵfac: i0.ɵɵFactoryDeclaration<ServerStateInterceptor, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ServerStateInterceptor>;
}