cmd react

The commands are similar to NPM’s:
• Install all packages: npm install or yarn
• Install a certain package: npm install --save <package> or yarn add <package>
• Start the development server: npm start or yarn start
• Run the tests: npm test or yarn test
• Install something globally: yarn global add <package> or npm install -g <package>


 yarn global add create-react-app

create:

create-react-app project-name-folder
cd project-name-folder
rm src/App.* src/index.css src/logo.svg
 yarn start


build: 

npm run build