node js authentication for beginners code example

Example 1: passport js

$ npm install passport-google-oauth20

Example 2: passportjs mac req.user not saved

app.post('/login', passport.authenticate('local-login', { failureRedirect: '/login'}),
  function(req, res) {
     console.log(req.user);
     req.session.user = req.user;
     res.redirect('/users');
  }
);