Nodejs or ExpressJS Windows Authentication

I would like to authenticate a windows user in NodeJS app. Is there any add-on for this yet ? There is node-krb5 but it doesn't support windows yet.

I have added a blog post for this here http://hadenoughpi.wordpress.com/2013/04/16/node-js-windows-authentication-using-edgejs/ I hope this is one of the right ways.