/// <reference types="node" />
import { Database } from 'better-sqlite3';
export { Adapter } from './adapter';
declare type CacheStatus = 'hit' | 'stale' | 'miss';
export interface CacheOptions {
    path?: string;
    ttl?: number;
    tbd?: number;
}
declare class Cache {
    db: Database;
    ttl: number;
    tbd: number;
    path: string;
    constructor({ path, ttl, tbd }?: CacheOptions);
    set(key: string, value: Buffer, ttl?: number): Promise<void>;
    get(key: string, defaultValue?: Buffer): Promise<Buffer | undefined>;
    has(key: string): Promise<CacheStatus>;
    del(key: string): Promise<void>;
    _delFile(filename: string): void;
    purge(): Promise<any>;
}
export default Cache;