Sharing a class between Node.js and the browser

Question

If i have a class, what is the best way to share that class and use it in both the browser as well as Node.js?

For example a game that uses a 2D Vector math class on both the client-side and the node.js.

Answer 1

NowJS is a pretty elegant way to share variables and functions between client JS and Node JS through an automatically sync'ed shared namespace.

There's also dnode, which the author comments on in response to a posting about NowJS here: http://news.ycombinator.com/item?id=2316079