getting error when using sketch-polyfill-console
```
error Error while building ./index.js
./node_modules/sketch-utils/to-array.js
Module parse failed: Unexpected token (7:23)
You may need an appropriate loader to handle this file type.
|   var arr = []
|   for (var j = 0; j < (object || []).length; j += 1) {
|     arr.push(object[j]))
|   }
|   return arr
 @ ./node_modules/sketch-utils/index.js 3:25-46
 @ ./node_modules/sketch-polyfill-console/lib/index.js
 @ ./node_modules/promise-polyfill/lib/index.js
 @ ./node_modules/sketch-polyfill-fetch/lib/index.js
```