import { BaseLimiter } from "./base.js";
import type { AcquireResult, ConcurrentLimiterOptions, RedisProvider } from "./types.js";
/**
 * Limits concurrent executions across all processes.
 * Uses Redis ZSET with expiring locks for distributed mutex behavior.
 */
export declare class ConcurrentLimiter extends BaseLimiter {
    private readonly maxConcurrent;
    private readonly lockTimeout;
    private currentLockId?;
    constructor(name: string, maxConcurrent: number, options?: ConcurrentLimiterOptions, redisProvider?: RedisProvider);
    private generateLockId;
    protected tryAcquire(): Promise<AcquireResult>;
    protected release(): Promise<void>;
    check(): Promise<AcquireResult>;
}
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