Why does React Native build as .tsx when creating a project?

I want to create a project with React Native. But when the project is created, it should be in the form of an App.js file, but it becomes App.tsx. I don't know why.

Is there any way I can use it back as before?

I watch this steps:[react native setup1

I run this command:

npx react-native@latest init AwesomeProject

Thanks,