Reminds me of Breach[1] / Thrust[2] which basically lets you do the UI plus some low level stuff via Node/JS.

There is a 'browser in a gist' [3] using Breach which is a good example of its use.

[1]: http://breach.cc/

[2]: https://github.com/breach/thrust (I believe this is the new core of Breach by the same people)

[3]: https://gist.github.com/morganrallen/f07f59802884bcdcad4a