reactjs server auth

server.ts

const jwt = require("jsonwebtoken");
const secret = process.env.JWT_SECRET;
export const authCheck = (req, res, next) => {
  if (req.headers.authorization) {
    const token = req.headers.authorization;
    jwt.verify(token, secret, (err, decoded) => {
      if (err) {
        res.send(401);
      } else {
        next();
      }
    });
  } else {
    res.send(401);
  }
};