Tick the presets you need — env, react, typescript — and the tool assembles a babel.config.json with the matching preset list.
Yes. The config references @babel/preset-env, preset-react, or preset-typescript by name — install whichever ones you selected as dev dependencies.
Yes, as a starting point — adjust the values to match your actual project structure and tooling versions.
It follows the tool's documented format, but always run your build once after adding it to confirm your specific setup is happy.