import type { Request, Response, NextFunction } from "express";
export declare function requestIdMiddleware(req: Request, res: Response, next: NextFunction): void;
export declare function jsonError(res: Response, status: number, code: string, message: string, extra?: Record<string, unknown>): void;
declare global {
    namespace Express {
        interface Request {
            requestId?: string;
        }
    }
}