For the application in this book, to maintain compatibility, you will want to use Node.js version 8.5.0, NPM version 5.4.2, and create-react-app version 1.4.0.

Execute the following commands to install and execute the app:

>npm install
>npm test
>npm start

All three commands should run successfully. After running npm test, you will need to exit the test run by hitting <q>. After running npm start, you will need to exit the server by hitting Ctrl + C.