After downloading the code base, you can run the application as such from the root directory of the application:

  npx json-server --watch ./server/db.json --port 3001 & npm run start

In the project directory, you can run:

Runs the app in the development mode.
Open http://localhost:3000 to view it in your browser.

The page will reload when you make changes.
You may also see any lint errors in the console.

Launches the test runner in the interactive watch mode.
See the section about running tests for more information.