Apply arrow function transform.

now.js

@@ -16,8 +16,6 @@ import root from './_root.js';
  * }, _.now());
  * // => Logs the number of milliseconds it took for the deferred invocation.
  */
-var now = function() {
-  return root.Date.now();
-};
+var now = () => root.Date.now();
 
 export default now;