import type LRUCache from 'lru-cache';
import { keyable, Store } from '../types';
declare type LRUApi<K, V> = Pick<LRUCache<K, V>, 'get' | 'set' | 'del'>;
export declare class LRUStore<K extends keyable = string, V = any> implements Store<K, V> {
    private lru;
    constructor(lru: LRUApi<K, V>);
    get(key: K): Promise<V>;
    set(key: K, val: V): Promise<boolean>;
    remove(key: K): Promise<boolean>;
}
export {};