How to extend Request object in Express with TypeScript

Hi everyone! I'm writing a backend on Express with TypeScript and encountered a problem with typing the Request object. I have a middleware that adds user data to the request after authentication. I'm doing something like this: ```typescript import { Request, Response, NextFunction } from 'express'; import jwt from 'jsonwebtoken'; interface UserPayload { id: string; email: string; role: 'admin' | 'user'; } export const authMiddleware = (req: Request, res: Response, next: NextFunction) => { const token = req.headers.authorization?.split(' ')[1]; if (!token) { return res.status(401).json({ message: 'No token' }); } try { const decoded = jwt.verify(token, process.env.JWT_SECRET!) as UserPayload; req.user = decoded; // TypeScript error: Prope