import { p as StorageAdapter, f as FlowState, A as AcquireLockOptions, h as Lock } from '../types-D8r3B8Ax.js';

/**
 * Structural subset of ioredis' `Redis` class. Only the methods we use are
 * required, so both `ioredis` and compatible clients work.
 */
interface RedisLike {
    set(key: string, value: string, ...args: (string | number)[]): Promise<string | null>;
    get(key: string): Promise<string | null>;
    del(...keys: string[]): Promise<number>;
    eval(script: string, numKeys: number, ...args: (string | number)[]): Promise<unknown>;
}
interface RedisStorageOptions {
    client: RedisLike;
    /** Prefix applied to all keys written by this adapter. Default: `kompensa`. */
    keyPrefix?: string;
    /** Polling interval while waiting for a contested lock, in ms. Default: 50. */
    lockPollMs?: number;
}
/**
 * Redis-backed storage with Redlock-style single-node locks.
 *
 * State is serialized to JSON. Locks use `SET NX PX` for atomic acquisition
 * plus a Lua-verified token on release, so a process whose TTL expired cannot
 * accidentally release the lock held by a newer owner.
 *
 * @example
 * import Redis from 'ioredis';
 * import { RedisStorage } from 'kompensa/storage/redis';
 *
 * const storage = new RedisStorage({ client: new Redis(process.env.REDIS_URL) });
 * const flow = createFlow('checkout', { storage }).step(...)
 */
declare class RedisStorage implements StorageAdapter {
    private readonly client;
    private readonly keyPrefix;
    private readonly lockPollMs;
    constructor(opts: RedisStorageOptions);
    private stateKey;
    private lockKey;
    load(flowName: string, flowId: string): Promise<FlowState | null>;
    save(state: FlowState): Promise<void>;
    delete(flowName: string, flowId: string): Promise<void>;
    acquireLock(flowName: string, flowId: string, options: AcquireLockOptions): Promise<Lock>;
    private makeLock;
}
declare function createRedisStorage(opts: RedisStorageOptions): RedisStorage;

export { type RedisLike, RedisStorage, type RedisStorageOptions, createRedisStorage };