Syntax for Sails for Facebook Authentication

[jaddoescad]

I used the sails framework to authenticate a user with my custom facebook token strategy. It works perfectly. I copied this snippet of code from github to make it work, However, I don't quite understand the syntax of that last part which has (req, res); at the end. Obviously it's referring to request and response, but why is that line of code there, it seems to be in an awkward place. Authentication fails if I exclude that line of code. It must be important so I just need to figure out what it is doing .

module.exports = {
 facebook: function(req, res) {
passport.authenticate('facebook-token', function(error, user, info) {
  res.ok();
})
(req, res);
}
  };

[dariooddenino]

Hi :) passport.autheticate is a middleware and it expects req, res and possibly next as arguments. Here you're passing them to it through a closure