/**
 * 可限制尺寸的键值对缓存
 *
 */
export declare class LimitKeyValueCache<K = any, V = any> {
    options: {
        limit: number;
        popSize: number;
    };
    /**
     *  @param options.limit {number} 限制尺寸
     *  @param options.popSize {number} 当超过尺寸时，删除多少元素，默认为 1
     */
    constructor(options: {
        limit: number;
        popSize?: number;
    });
    caches: Map<K, V>;
    keySet: Set<K>;
    _size: number;
    set(key: K, value: V): Map<K, V> | undefined;
    get(key: K): V | undefined;
    has(key: K): boolean;
    delete(key: K): boolean;
    _pop(popSize: number): void;
    get size(): number;
}
//# sourceMappingURL=LimitKeyValueCache.d.ts.map