Running

Learn to run the app with Expo start.

expo start

To run the project, you type npx expo start in the terminal. This command starts a development server and displays a QR code.

Open the Expo Go app on your phone and scan the QR code to see the app instantly. The phone and the computer must be on the same network.

While the server runs, saving the file reloads the app automatically. This feature is called fast refresh.

Expo Go is an app that opens Expo projects on the phone. It is free on both App Store and Google Play.

When you scan the QR code, Expo Go downloads your code and displays it on the screen. This is the easiest way to test on a real device.

If you prefer, you can also press j to open the app in a web browser; but for the most accurate result, use a phone.

Write a runnable App component. It should return <View> containing <Text>Welcome</Text>. Include the import line.

Show example solution

import { View, Text } from 'react-native';

function App() {
  return (
    <View>
      <Text>Welcome</Text>
    </View>
  );
}

export default App;

Server command

Start the development server: npx expo ____

Show answer

Start the development server: npx expo start