When we create react application, some of the files are automatically created. Let's explore some of them one by one:
Package.json:
It includes the metadata of the entire application and all the installed dependencies information.
index.html:
It's the only html file in the entire React application and all the new html will be written via JSX.
index.js:
It's the js file in which we manipulate index.html and render JSX/html through render function.
App.js:
It's the component in which html/JSX is defined and this component is importing under index.js. Similiar to this we will build more components to implement application functionalities.