@Coffee4cr something like that is not there yet. somewhere on the list, but itll take a while till I get to the new features. Am currently rewriting core functionality in node.js. More fun to play around with (and shared code between backend and frontend is a plus). (Hopefully) soon I can try parts of it out on http://gw2-api.com/, with all the performance fun attached.
@lye TBH the fast changing is the only reason i really enjoy JS now. all the fun new stuff makes it way, way more comfortable to write (mainly arrow functions, async/await & native promises for me). And the tooling with browserify/babel is really sweet.