import type { IdempotencyStore } from "./types.mjs";
/** Default in-memory idempotency store with TTL eviction.
*
*  Fine for single-instance servers and tests. For multi-process or
*  serverless deployments, plug in an `unstorage`-backed store or a
*  custom `IdempotencyStore` implementation. */
export declare function memoryIdempotencyStore(defaultTtlSeconds?: number): IdempotencyStore;