events.js:183 throw er; // Unhandled 'error' event ^ nodeJS JWT

Question

I'm new to the nodeJS and JWT. I want to create token on registration and confirm it on log in. But it keeps throwing syntax error and I dont know why. Also please if I'm doing anything wrong besides syntax,tell me.

  //Add new user A.K.A Registration

  app.post('/addUser', (req, res) => {
    const addUser = new User({username: req.body.username, password: req.body.password})
    addUser.save().then(result => res.status(200).json(result)).catch((err) => console.log(err))
    jwt.sign(addUser,'secretKey',{expiresIn:'30h'},(err,token)=>{
        res.json({token})
    })
})

//Log in A.K.A Sign Up
app.post('/logIn',verifyToken ,(req, res) => {
    User.findOne({username: req.body.username, password: req.body.password}).then(result => {
        if (result.username === req.body.username && result.password === req.body.password) {
            res.status(200).send({
                message: 'Successful login'})
            jwt.verify(req.token, 'secretkey', (err, authData) => {
                if(err) {
                    res.sendStatus(403);
                } else {
                    res.json({
                        message: 'Post created...',
                        authData
                    });
                }
            })
        } else {
            res.status(404).send({
                message: 'Invalid Login'
            })
        }
    })
})

Answer 1

you should pass an object to json method

// addUser.save().then(result => res.status(200).json(result))

.then(result => {

res.json({result})

})