whaticket-community/backend/middleware/is-auth.js

const jwt = require("jsonwebtoken");

module.exports = (req, res, next) => {
	let decodedToken;
	try {
		const token = req.get("Authorization").split(" ")[1];
		decodedToken = jwt.verify(token, "mysecret");
	} catch (err) {
		err.statusCode = 500;
		next(err);
	}

	if (!decodedToken) {
		const error = new Error("Falha na autenticação");
		error.statusCode = 401;
		next(error);
	}

	req.userId = decodedToken.userId;
	next();
};