Created by: rfreling
Cleaned up PR (original reference #9076, stale PR #9100 )
This simple syntax change will allow for other CRA extension utilities (like customize-cra) to add options to the 'style-loader'. Specifically the "insert" prop (fka "insertInto") can be quite useful.
E.g. https://github.com/arackaf/customize-cra/blob/master/api.md#adjuststyleloaderscallback
It's possible that preventing overrides to the 'style-loader' configuration was intentional as a way to prevent downstream webpack/hot-update bugs, but I haven't run into any when running this update in an ejected create-react-app. So would appreciate any veteran thoughts on whether this is safe to update.