be-the-hero Project week omnistack 11 back-end npm install npm start npm test server http://localhost:3334/ front-end npm install npm run build npm start server http://localhost:3000/ mobile npm install npm start install expo: https://docs.expo.io/versions/v37.0.0/get-started/installation/ https://github.com/Rocketseat/expo-common-issues#expo-command-not-found