Learn TypeScript 3 by Building Web Applications

File and folder structure

Here is an overview of the created file/folder structure taken from the official documentation:

my-app 
├── README.md 
├── node_modules 
├── package.json 
├── .gitignore 
├── public 
│   ├── favicon.ico 
│   ├── index.html 
│   └── manifest.json 
└── src 
    ├── App.css 
    ├── App.js 
    ├── App.test.js 
    ├── index.css 
    ├── index.js 
    ├── logo.svg 
    └── serviceWorker.js 

The first thing to notice is the simplicity of the structure.

In the public folder, you can find the index.html page, along with the favicon (that is, the icon that goes at the top left of the web browser tab) and a manifest.json file.

If you open the index.html file, you won't see any direct mention of React. Don't worry though—it really is there. The build system provided by CRA ...