Answers for "react.js create app"

react create app

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

react create app

yarn create react-app my-app
# or
npx create-react-app my-app
# or
npm init react-app my-app

cd my-app
yarn start # or npm start

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