Expo is very slow or doesn't display at all the welcome message from a newly created React-Native App.

[theoaristi53]

So I have been creating a new React-Native app using the following commands

npm install -g expo-cli
expo init confusion
cd confusion
yarn start

Then I type yarn start and get this in terminal

To run the app with live reloading, choose one of:
  • Scan the QR code above with the Expo app (Android) or the Camera app (iOS).
  • Press a for Android emulator, or i for iOS simulator.
  • Press e to send a link to your phone with email.
  • Press s to sign in and enable more options.

 Expo  Press ? to show a list of all available commands.
Logs for your project will appear below. Press Ctrl+C to exit.

I press option a and this is what I see in the android emulator.

The App.js using a functional component.

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

export default function App() {
  return (
    <View style={styles.container}>
      <Text>Open up App.js to start working on your app!</Text>
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#fff',
    alignItems: 'center',
    justifyContent: 'center',
  },
});

The generated package.json from the react-native app is this

{
  "main": "node_modules/expo/AppEntry.js",
  "scripts": {
    "start": "expo start",
    "android": "expo start --android",
    "ios": "expo start --ios",
    "web": "expo start --web",
    "eject": "expo eject"
  },
  "dependencies": {
    "expo": "^35.0.0",
    "react": "16.8.3",
    "react-dom": "16.8.3",
    "react-native": "https://github.com/expo/react-native/archive/sdk-35.0.0.tar.gz",
    "react-native-web": "^0.11.7"
  },
  "devDependencies": {
    "babel-preset-expo": "^7.1.0"
  },
  "private": true
}

The Android SDK version is 27 or Oreo 8.1

What is wrong and how to fix that annoying bug?

Thanks,
Theo.

[adamjnav]

Hey @theoaristi53,

Do you have any connection/network speed issues that could affect this? Also, have you been able to test on an iOS simulator or any physical devices?

Cheers,
Adam

[theoaristi53]

Dear @adamjnav,

My internet connection is fine. I also tried it to my android phone but I am still getting the same error!

[wodin]

If you can, try running a packet sniffer (e.g. Wireshark) to see if certain network requests are failing or taking a long time.

Also you might want to vote on this feature request.