Deprecated as Traceur is unmaintained. Check out broccoli-babel-transpiler
instead.
broccoli-traceur 
Traceur
is a JavaScript.next to JavaScript-of-today compiler
Issues with the output should be reported on the Traceur
issue tracker.
$ npm install --save-dev broccoli-traceur
var traceur = require('broccoli-traceur');
tree = traceur(tree, options);
See the Traceur
options.
MIT © Sindre Sorhus