import type { RateLimiter, RateLimitResult, LeakyBucketConfig, RateLimitStorage, RateLimitCheckOptions, RateLimitContext } from '../types';
export declare class LeakyBucketRateLimiter implements RateLimiter {
    private config;
    private storage;
    constructor(config: LeakyBucketConfig, storage: RateLimitStorage);
    check(key: string, options?: RateLimitCheckOptions): Promise<RateLimitResult>;
    reset(key: string, _context?: RateLimitContext): Promise<boolean>;
    setLimit(key: string, limit: number, _context?: RateLimitContext): Promise<boolean>;
    getLimit(_key: string, _context?: RateLimitContext): Promise<number | null>;
    getUsage(key: string, _context?: RateLimitContext): Promise<{
        used: number;
        remaining: number;
        reset: number;
    } | null>;
    private getKey;
    private getNextResetTime;
    private getTTL;
}