import { TransferState } from '@angular/platform-browser';
import { Observable } from "rxjs";
import * as i0 from "@angular/core";
export declare class CacheResponseService {
    private platformId;
    private transferState;
    constructor(platformId: string, transferState: TransferState);
    resolve<T>(key: string, callback: () => Observable<T>): Observable<T>;
    static ɵfac: i0.ɵɵFactoryDeclaration<CacheResponseService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<CacheResponseService>;
}