import { HttpRequest, HttpResponse } from '@angular/common/http';
export interface RequestCacheEntry {
    url: string;
    response: HttpResponse<any>;
    lastRead: number;
}
export declare abstract class CacheRequestServiceBase {
    private cache;
    constructor();
    abstract isCachable(req: HttpRequest<any>): boolean;
    get(req: HttpRequest<any>): HttpResponse<any> | undefined;
    put(req: HttpRequest<any>, response: HttpResponse<any>): void;
}
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