Created by: gaearon
This should fix https://github.com/facebookincubator/create-react-app/issues/2624 and work around https://github.com/facebookincubator/create-react-app/issues/2030.
Obviously it's not a very good workaround, but I'm running out of options and we need the CI to be working. The reason I'm okay with this solution is because current behavior is broken anyway. Re-running yarn makes no difference since we didn't change the lockfile, so it might as well be a no-op.
See https://github.com/facebookincubator/create-react-app/issues/2627 for discussion of the proper fix.