Install globally with npm install -g init-cra.
You can run init-cra in a fresh CRA repo to add these helper files.
Applying this flag will install express and body-parser, along with creating a server folder and a basic Express API scaffold. This will also update your package.json file to start the server and proxy it to your CRA app.
Applying this flag will skip automatically committing the files created and altered by init-cra
Applying this flag will stop packages from being locked automatically