This package allows you to transpile ES2015 source using buble. See Buble project website to check out supported features.
note: This is almost-working prototype. Everything is immature. If you want something to be fixed, freely send PR or post issues!
npm install --save-dev buble-loader buble
Add this to your
module:loaders:test: /.js$/loaders: 'buble'include: pathquery:objectAssign: 'Object.assign'