npm install --global yarn

yarn create react-app my-app

​

// Go into the folder where you wish to create your app

yarn create react-app appname

# Run this to create-react-app using npm

npx create-react-app my-app

# Or run this to create-react-app using yarn

yarn create react-app my-app

to override yarn

npx create-react-app my-app --use-npm