reaccionar la aplicación Crear
npx create-react-app my-app
cd my-app
npm start
Proud Panther
npx create-react-app my-app
cd my-app
npm startnpx create-react-app my-app
cd my-app
npm start
//Note:npx on the first line is not a typo —
//it’s a package runner tool that comes with npm 5.2+.npx --ignore-existing create-react-app .