I was searching for this too, i m making a game and i need to synch tweens between clients and server, so it d be the best if both use the same library.
I found a way thanks to jack's reply, it s easy:
just take a tweenmax or tweenlite (min or uncom) file and put a
var window = {};
at begging and then
module.exports = window.TweenLite; // or TweenMax
at the end of the file.
then load the file in the main app
var TweenLite = require('TweenLite.min.js'); //or whatever your file name is in the "node_modules" folder
you're good to go.