npm start

Runs the app in the development mode.
Open http://localhost:3000 to view it in your browser.

The page will reload when you make changes.
You may also see any lint errors in the console.

npm test

Launches the test runner in the interactive watch mode.
(https://facebook.github.io/create-react-app/docs/running-tests).

npm run build

Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for best performance.

The build is minified and the filenames include the hashes.\

(https://facebook.github.io/create-react-app/docs/deployment)

npm run eject

Extracts all hidden build configuration (webpack, Babel, ESLint) for CRA app into your project root folder with new config & scripts folders. Allows advanced config modification but is a one-way operation!

Code Splitting

https://facebook.github.io/create-react-app/docs/code-splitting

Analyzing Bundle Size

https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size

Making a Progressive Web App

https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app

Advanced Configuration

https://facebook.github.io/create-react-app/docs/advanced-configuration

Deployment

https://facebook.github.io/create-react-app/docs/deployment

Class Component Lifecycle Render Flow

1. constructor
2. render()
3. componentDidMount()
4. setState()
5. render()