import type { Request, Response, NextFunction } from "express";
interface RateLimitOptions {
    windowMs: number;
    max: number;
    message?: string;
    keyGenerator?: (req: Request) => string;
    skip?: (req: Request) => boolean;
    headers?: boolean;
    standardHeaders?: boolean;
    legacyHeaders?: boolean;
    store?: any;
    draft_polli_ratelimit_headers?: boolean;
}
interface RateLimitInfo {
    count: number;
    resetTime: number;
    lastAttempt: number;
}
declare class MemoryRateLimiter {
    private limits;
    private interval;
    private logger;
    constructor(cleanupIntervalMs?: number);
    check(key: string, options: RateLimitOptions): {
        limited: boolean;
        info: RateLimitInfo;
    };
    private cleanup;
    stop(): void;
    getKeys(): string[];
    reset(key: string): boolean;
    resetAll(): void;
    getInfo(key: string): RateLimitInfo | undefined;
}
declare const memoryRateLimiter: MemoryRateLimiter;
export declare function rateLimitMiddleware(options: RateLimitOptions): (req: Request, res: Response, next: NextFunction) => void;
export { memoryRateLimiter };