import { InjectionToken } from '@angular/core';
import { Observable } from 'rxjs';
import { CacheCheckResult } from './cache-check-result';
export interface CacheOptions {
    absoluteExpirationRelativeToNow?: number;
    clearPreviousCache?: boolean;
    enableDebug?: boolean;
    enableRemoteCacheCheck?: boolean;
    enableRemoteCacheCheckInPlatformServer?: boolean;
    remoteCacheCheckInterval?: number;
    remoteCacheCheckerEndpointUrl?: string | (() => string);
    remoteCacheChecker?(key: string, hash: string): Observable<CacheCheckResult>;
}
export declare const CACHE_OPTIONS: InjectionToken<CacheOptions>;