token is not created in nodejs

Question

I have a function that selects username from mysql database and return results to post request as following:

function userAuthentication(user){
var deferred = Q.defer();
pool.getConnection(function(err, connection) {
    if (err) {
        var dbError = new Error('No db connection');
        console.log(dbError);
    }
    else {
        var selectUserName = 'SELECT * FROM User WHERE username= '+connection.escape(user)+' ';

        connection.query(selectUserName, function(error, rows){
            if(error){
                console.log(error);
                deferred.reject(error);
            }
            else if(rows.length === 0){
                var countError = new Error('No User Found');
                console.log ("Database.js -> "+ countError);
                deferred.reject(countError);
            }else{
                deferred.resolve(rows);
            }
        });
    }
    connection.release();
});
return deferred.promise;

}

the function userAuthentication is called from the rout.post request

router.post('/checkAuthentication', function(request, response) {

    database.userAuthentication(request.body.username).then(function(data) {
        if(data[0].RowDataPacket!=0){
            if(bcrypt.compareSync(request.body.password,data[0].password)){
                var token = jwt.sign({
                   username: data[0].username,
                }, superSecret,{
                    expiresInMinutes: 1440
                });

                console.log(token);
                // return the information including token as JSON
                response.json({
                    success: true,
                    message: 'Token Created',
                    token: token
                }); 
            }
            else{
                response.json({ success: false, message: 'Authentication failed. Wrong Password.' });
            }
        }else{
            response.json({ success: false, message: 'Authentication failed. User not found.' });
        }       
    });
});

i am trying to create a token when i check if inputed username and password matches the ones in mysqlDb, but unfortunately the token is not created; the line console.log(token) is not printing any result into the console. what is the part i am missing??? I appreciate your help guys.

Answer 1

Which jwt node module are you using?
I suppose it is not node-jsonwebtoken, since it does not support expiresInMinutes, but only expiresInMinutes...

However, you should enclose the jwt.sign() call in a try/catch block, to catch any error it throws...:

try {
  var token = jwt.sign(
    {
      username: data[0].username,
    },
    superSecret,
    {
      expiresIn: 1440 * 60,
    }
  );
} catch(err) {
  console.error('error signing json web token:', err);
}