import Redis from "ioredis";
import type { LockBackend } from "../common/backend.js";
import type { RedisBackendOptions, RedisCapabilities } from "./types.js";
/**
 * Creates Redis-based distributed lock backend using Lua scripts for atomicity.
 *
 * Storage: Lock data at {keyPrefix}{lockKey}, lockId index at {keyPrefix}id:{lockId}
 *
 * @param redis - ioredis client instance
 * @param options - Backend configuration (keyPrefix, ttl, tolerance)
 * @returns LockBackend with server-side time authority
 * @see docs/specs/redis-backend.md
 */
export declare function createRedisBackend(redis: Redis, options?: RedisBackendOptions): LockBackend<RedisCapabilities>;