Let's Understand the typical React App hierarchy-

1. public folder: contains the index.html file that serves as the entry point for the app and other static assets such as images and fonts.

2. src folder: contains the main source code for the app. It typically includes the following subfolders:

   -> components folder: contains the individual react components

   -> pages folder: contains components that correspond to pages in the app.

   ->assets folder: contains images, fonts, and other assets used by the app.

   -> App.js: the root component that ties together all the other components in the app

   -> index.js: the entry point for the app that renders the App component into the DOM.

3. node_modules folder: contains the dependencies installed by npm.

4. package.json: contains the metadata for the app, including the dependencies and scripts used by the app.

5. .gitignore: lists files and directories that should be ignored by Git.

6. README.md: contains information about the app and how to set it up.

PS: This file hierarchy may vary based on the specific needs of the app and the developer's preferences, but this is a general guideline for a React app.