FYI, I have a PR open to turn JavaScript Next into a tmbundle natively. In case wanna try it: Btw, I found myself unsatisfied by JavaScript Next, so I made my own bundle that supports all the Babel features (ES6, 7, JSX) . Basically I've just converted the https://github.com/gandm/language-babel package to a TM bundle and removed unneeded captured spaces in the regex rules. I've been using it for the last month or so with no issues so far. https://github.com/Igor10k/JavaScript-Babel.tmbundle