npm create-react-app
npx create-react-app my-app
cd my-app
npm start
Proud Panther
npx create-react-app my-app
cd my-app
npm start
npx create-react-app app-name
cd app-name
npm start
npx create-react-app my-app
cd my-app
yarn start
npx --ignore-existing create-react-app .