[rxaxm]

emacs js2-mode uses recursive-descent parser to build up js ast with full recognition of Ecma-262 language standard and exposes ast for use in other pugins

https://github.com/mooz/js2-mode/blob/master/js2-mode.el

11k amazing loc

[JacksonGariety]

Using it right now.

One of my favorite things installed on my computer.

[hughw]

Yes. Many thanks to Steve Yegge. js2-mode is why I use emacs.