Which mode to use for ECMAScript 6?

Question

Is there a mode out there that has syntax higlighting (and possibly more, but this is the least I want) for a more recent ecmascript? I'm especially interested in one that has support for template strings and generator functions.

This should render properly:

co(function*(){
   var a = yield request(`some.domain/${variable}`)
   return a;
}

Answer 1

js2-mode supports all of this. It is available on GNU ELPA and MELPA for easy access.