index.web.js

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

import React, { Component } from 'react';
import { Platform, StyleSheet, Text, View } from 'react-native';
import Screen1 from '../Screen1';
import Screen2 from '../Screen2';
import Home from '../Home';
import {
  createSwitchNavigator,
  createNavigator,
  getActiveChildNavigationOptions
} from '@react-navigation/core';
import { createBrowserApp } from '@react-navigation/web';

const AppNavigator = createSwitchNavigator(
  {
    Home,
    Screen2
  },
  {
    navigationOptions: ({ navigation, screenProps }) => {
      const options = getActiveChildNavigationOptions(navigation, screenProps);
      return { title: options.title };
    }
  }
);

// const AppContainer = createAppContainer(AppNavigator);
const AppContainer = createBrowserApp(AppNavigator);

type Props = {};

export default class App extends Component<Props> {
  render() {
    return <AppContainer />;
  }
}

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