In the project directory, you can run:
Runs the app in the development mode.
Open http://localhost:3000 to view it in the browser.
Builds the app for production to the build
folder.
It correctly bundles React in production mode and optimizes the build for the best performance.
At a download folder, run command "npx json-server --port 3001 --watch db.json". Then, you can test and experience web IDE without connecting other server.