express jwt middleware in javascript

index.tsx
const jwt = require('jsonwebtoken');

function authMiddleware(req, res, next) {
  // Get the token from the header
  const token = req.header('Authorization');
  if (!token) {
    return res.status(401).json({ msg: 'Authorization denied' });
  }

  try {
    // Verify the token
    const decoded = jwt.verify(token, process.env.JWT_SECRET);
    req.user = decoded.user;
    next();
  } catch (err) {
    res.status(401).json({ msg: 'Invalid token' });
  }
};

module.exports = authMiddleware;
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