react run app code example

Example 1: react create 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: 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