Not that I've experienced. Another cool trick: modules make sense when you use packages, but they feel like PHP 4 when you just try to divide your code to several files.
This fixes part of the problem, but what happens when you reference './models/user.js' from the file 'auth.js' but then auth grows in size and you decide to divide it and put it in auth/facebook.js, auth/twitter.js, etc. -- well, now you are fucked.
This gives you the flexibility to transparently change the file into a folder + index.*, then break functionality up into pieces that live inside that folder.
https://gist.github.com/2692091
This fixes part of the problem, but what happens when you reference './models/user.js' from the file 'auth.js' but then auth grows in size and you decide to divide it and put it in auth/facebook.js, auth/twitter.js, etc. -- well, now you are fucked.