import React from 'react'; import { Button } from 'react-native'; import { StackNavigator, DrawerNavigator, NavigationActions } from 'react-navigation'; // import { Platform } from 'react-native'; import Sidebar from '../../containers/Sidebar'; import DrawerMenuButton from '../../presentation/DrawerMenuButton'; import RoomsListView from '../../views/RoomsListView'; import RoomView from '../../views/RoomView'; import CreateChannelView from '../../views/CreateChannelView'; import SelectUsersView from '../../views/SelectUsersView'; const drawerPosition = 'left'; const drawerIconPosition = 'headerLeft'; const backToScreen = (navigation, routeName) => { const action = NavigationActions.reset({ index: 0, actions: [NavigationActions.navigate({ routeName })] }); navigation.dispatch(action); }; const AuthRoutes = StackNavigator( { RoomsList: { screen: RoomsListView, navigationOptions({ navigation }) { return { title: 'Rooms', [drawerIconPosition]: }; } }, Room: { screen: RoomView, navigationOptions({ navigation }) { return { title: navigation.state.params.title || 'Room', headerLeft: (