Ask HN: Tierless web programming with JavaScript?

Parallel question on SO: http://stackoverflow.com/questions/4597167/tierless-web-framework-with-javascript

Links is a lisp-like functional web programming language/framework that makes it easy to write a single piece of code that is compiled to server-side code, client-side JS and HTML, thus making it much easier to write web applications. Since there really is no distinction between the client and server side, they call it "tierless" programming. With the advent of Server-side JS, are there any comparable frameworks with JS? Note that I don't just mean writing server side and client side code in the same language, but writing server-side and client-side functions that can call each other and generate the HTML. Have a look at Links or HOP to get a better idea for what I am talking about. Is there a tierless web framework for JavaScript?