Node require syntax

I am new to Javascript and even newer to Node. I am trying to read an express server code and can't figure out following line in my app.js file:

module.require('./auth')(passport);

I know I have a variable that holds passport module in app.js:

var passport = require('passport');

and I also have auth.js in the same directory which exports the following function:

module.exports = function(passport) {
    passport.use('local-login', new LocalStrategy({
        usernameField: 'email'
    }, function(idpEmail, password, done) {
        // do email mapping
        findEmailFromDummyDb(idpEmail, password,function(err,user){
            if(err) {
                done(null, false, {
                    messages: err.toString()
                });
            } else {
                done(null, {
                    sysEmail: user.sysEmail
                });
            }
        });
    }));

However, what does following function actually do?

module.require('./auth')(passport);

via nitinsh99