import { NgHttpCachingStorageInterface } from './ng-http-caching-storage.interface';
import { NgHttpCachingEntry } from '../ng-http-caching.service';
import { HttpRequest, HttpResponse } from '@angular/common/http';
export interface NgHttpCachingStorageEntry {
    url: string;
    response: string;
    request: string;
    addedTime: number;
    version: string;
}
export declare const serializeRequest: (req: HttpRequest<any>) => string;
export declare const serializeResponse: (res: HttpResponse<any>) => string;
export declare const deserializeRequest: <T = any>(req: string) => HttpRequest<T>;
export declare const deserializeResponse: <T = any>(res: string) => HttpResponse<T>;
export declare class NgHttpCachingBrowserStorage implements NgHttpCachingStorageInterface {
    private storage;
    constructor(storage: Storage);
    get size(): number;
    clear(): void;
    delete(key: string): boolean;
    forEach(callbackfn: (value: NgHttpCachingEntry, key: string) => void): void;
    get(key: string): Readonly<NgHttpCachingEntry> | undefined;
    has(key: string): boolean;
    set(key: string, value: NgHttpCachingEntry): void;
    protected serialize(value: NgHttpCachingEntry): NgHttpCachingStorageEntry;
    protected deserialize(value: NgHttpCachingStorageEntry): NgHttpCachingEntry;
}