message: build(build): ecma 7 ready
diff: @@ -266,7 +266,7 @@ module.exports = {
  : new UglifyJsPlugin({
  uglifyOptions: {
  ie8: false,
  - ecma: 6,
  + ecma: 7,
  compress: {
  warnings: false,
  // Disabled because of an issue with Uglify breaking seemingly valid code:
  