This is a basic React application.
First, you need to install create-react-app globally. Run the following command:
npm i -g create-react-app
Then, you can create a new React application by running:
npx create-react-app app
Navigate into your new app directory:
cd app
Then, you can start the app by running:
npm run start
This will start the development server, and you can view your app at localhost:3000 in your browser.