react cRa code example

Example 1: create react app

npx create-react-app my-app
cd my-app
npm start

Example 2: npm start react

npx create-react-app mon-app
cd mon-app
npm start

Example 3: new create react app

npx create-react-app my-app
cd my-app
npm start
//Note:npx on the first line is not a typo — 
//it’s a package runner tool that comes with npm 5.2+.

Example 4: create react app

npm install --save typescript @types/node @types/react @types/react-dom @types/jest

# or

yarn add typescript @types/node @types/react @types/react-dom @types/jest