Thanks for the answers from now,
I am a newbie in React Native, I want to make a cross-platform app so I created index.js:
import Re
After React v0.49, you don't need index.ios.js and index.android.js. You only need the index.js:
import {AppRegistry} from 'react-native';
import App from './app/App';
AppRegistry.registerComponent('appMobile', () => App);
(replace appMobile with the name of your app)
Source: (https://github.com/facebook/react-native/releases/tag/v0.49.0)
New projects have a single entry-point (index.js) from now on