In the project directory, you can run:

npm install
to install the dependencies.

npm start
to run the app in the development mode at http://localhost:3000

The page will reload if you make edits.
You will also see any lint errors in the console.

npm run build
Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.

The build is minified and the filenames include the hashes.
Your app is ready to be deployed!