/**
 * @typedef {object} MemoryStoreOptions
 * @property {number} [sweepMs=60000]  Interval for the background TTL sweep.
 */
/**
 * @param {MemoryStoreOptions} [options]
 * @returns {import('../index.js').OpaqueStore & { _size: () => number, stop: () => void }}
 */
export function memoryStore(options?: MemoryStoreOptions): import("../index.js").OpaqueStore & {
    _size: () => number;
    stop: () => void;
};
export type MemoryStoreOptions = {
    /**
     * Interval for the background TTL sweep.
     */
    sweepMs?: number | undefined;
};