I am working on a create-react-app project at the moment and I can't figure out how to enable Autoprefixer CSS Grid translations.

I can't use control comments because we are using Material UI CSS in JS. It doesn't really provide a way to add comments to the output CSS
https://material-ui.com/styles/basics/#higher-order-component-api

creat-react-app is intended to be a simple zero config React solution that hides all of the ugly webpack stuff from the author.

It is possible to make all that webpack stuff editable (and thus making it possible to edit the autoprefixer settings) by ejecting the project, but this is not a preferable option.

What I would like to do instead is define my custom autoprefixer settings in a file in the root folder or as an option in the package.json file (think like how Browsers List works).

This would theoretically allow for custom Autoprefixer configurations in projects like create-react-app and Angular that are not built to give their users full configuration control.