import type { Config } from "./config";
interface CacheItem<T> {
    cacheTime: ReturnType<Date["getTime"]>;
    data: T;
}
export declare class CacheProvider {
    constructor(config: Config);
    mustValidate: boolean;
    private config;
    private defaultCacheTime;
    /**
     * Retrieve cache if existent, ignoring the time.
     *
     * The caller is responsible for handling proper validation,
     */
    retrieveJson<T>(cachekey: string): CacheItem<T> | undefined;
    /**
     * Save data to cache.
     */
    storeJson<T>(cachekey: string, data: T): void;
    json<T>(cachekey: string, block: () => Promise<T>, cachetime?: number): Promise<T>;
    /**
     * Delete all cached data.
     */
    cleanup(): void;
}
export {};