Custom Callback Route for Linkedin using Passportjs

1

Hi,

I’m trying to create api using MEAN and PassportJs. I’m stuck with linkedin callback route.
Trying to create end points, but Linkedin Strategy provides this

app.get('/auth/linkedin/callback', passport.authenticate('linkedin', {
  successRedirect: '/',
  failureRedirect: '/login'
}));

I’m looking for something like this

app.get('/auth/linkedin/callback', passport.authenticate('linkedin', function(err, user, info){
if(err)
  throw err;
res.json(user);
}));

What am I missing here??