import { HttpRequest } from '../client';
import { HttpCacheStorePrefixDecorator } from './prefix-decorator';
export declare class HttpCacheService {
    private prefixedStore;
    constructor(store: HttpCacheStorePrefixDecorator);
    /**
     * Gets the unique key used as idenitifier to store
     * a cached response for the given http request.
     */
    private getRequestIdentifier;
    /**
     * Tells if a cached entry is expired.
     */
    private isEntryExpired;
    /**
     * Gets the cached entry associated with the request.
     */
    private getEntry;
    /**
     * Removes a cached entry.
     */
    private removeEntry;
    /**
     * Determines if for the given request is available a cached response.
     */
    has<HttpRequestBodyT>(request: HttpRequest<HttpRequestBodyT>): boolean;
    /**
     * Tells if the cached request is expired or not.
     */
    isExpired<HttpRequestBodyT>(request: HttpRequest<HttpRequestBodyT>): boolean;
    /**
     * Gets the cached entry in the map for the given request.
     */
    get<HttpResponseT, HttpRequestBodyT>(request: HttpRequest<HttpRequestBodyT>): HttpResponseT | undefined;
    /**
     * Puts a new cached response for the given request.
     */
    put<HttpResponseT, HttpRequestBodyT>(request: HttpRequest<HttpRequestBodyT>, response: HttpResponseT): void;
    /**
     * Founds all expired entry and deletes them from the cache.
     */
    prune(): void;
    /**
     * Flush the cache by removing all entries.
     */
    flush(): void;
}