interface Bucket {
    remaining: number;
    limit: number;
    refresh: number;
    promise: Promise<void>;
    cleaner?: NodeJS.Timeout;
}
export declare const buckets: Map<string, Bucket>;
export declare const bucketIds: Map<string, string>;
export declare function checkLimit(req: Request, bucketTTL: number): Promise<(v: Response) => void>;
export {};