import { CacheOptions } from "../types";
export declare class BasicCache {
    exists(key: any): Promise<any>;
    get(key: any): Promise<any>;
    set(key: any, value: any, ttl: number): Promise<void>;
    delete(key: any): Promise<void>;
    /**
     * This function should remove all cached data. Currently this
     * is only used for testing.
     */
    deleteAll(): Promise<void>;
    /**
     * Add cache prefixes and prevent too long cache keys.
     */
    createKey(prefix: CacheOptions["prefix"], key: any): string;
}