broccoli-fat-arrow 
Compiles ES6 arrow functions to ES5 compliant code
[1, 2, 3].map(n => n * 2);compiles to this:
[1, 2, 3].map(function(n) { return n * 2; });npm install --save broccoli-es6-arrow
var md = require('broccoli-es6-arrow');
tree = md(tree);MIT © Hemanth.HM