This package includes scripts and configuration used by Create React App.
Please refer to its documentation:
create-react-app test-mvp --scripts-version comatch-mvp
This will produce a React Application bootstrapped with Create React App but on top of that, the custom packages will provide a set of folders and pre-stup code. The goal of this is to allow the develop to focus on developing rather than on hooking up various components so that they can get started on a "simple" project. Enjoy hacking!