index.ios.js

/**
 * Sample React Native App
 * https://github.com/facebook/react-native
 * @flow
 */

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

// why did you update
if (process.env.NODE_ENV !== 'production') {
  // bugfix: react^15.6
  let createClass = React.createClass
  Object.defineProperty(React, 'createClass', {
    set: (nextCreateClass) => {
      createClass = nextCreateClass
    },
  })
  const {whyDidYouUpdate} = require('why-did-you-update')
  whyDidYouUpdate(React, {include: /^why/})
}

import App from './src/app'

export default class demoApp extends Component {
  render() {
    return (
      <View style={styles.container}>
        <App />
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    backgroundColor: '#F5FCFF',
  },
  welcome: {
    fontSize: 20,
    textAlign: 'center',
    margin: 10,
  },
  instructions: {
    textAlign: 'center',
    color: '#333333',
    marginBottom: 5,
  },
});

AppRegistry.registerComponent('demoApp', () => demoApp);