chore: add an example for SSR (#8298)

<img width="740" alt="Screen Shot 2020-05-20 at 16 31 30" src="https://user-images.githubusercontent.com/1174278/82458770-673d8880-9ab7-11ea-81d3-8ac0c1e52705.png">

example/src/Restart.native.tsx

@@ -0,0 +1,11 @@
+import RNRestart from 'react-native-restart';
+import { Updates } from 'expo';
+
+export function restartApp() {
+  // @ts-ignore
+  if (global.Expo) {
+    Updates.reloadFromCache();
+  } else {
+    RNRestart.Restart();
+  }
+}

example/src/Restart.tsx

@@ -0,0 +1 @@
+export function restartApp() {}

example/src/Screens/BottomTabs.tsx

@@ -1,7 +1,7 @@
 import * as React from 'react';
 import { View, ScrollView, StyleSheet, Platform } from 'react-native';
 import { Button } from 'react-native-paper';
-import { MaterialCommunityIcons } from '@expo/vector-icons';
+import MaterialCommunityIcons from 'react-native-vector-icons/MaterialCommunityIcons';
 import {
   createBottomTabNavigator,
   BottomTabNavigationProp,

example/src/Screens/DynamicTabs.tsx

@@ -1,7 +1,7 @@
 import * as React from 'react';
 import { View, StyleSheet } from 'react-native';
 import { Title, Button } from 'react-native-paper';
-import { Feather } from '@expo/vector-icons';
+import Feather from 'react-native-vector-icons/Feather';
 import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
 
 type BottomTabParams = {

example/src/Screens/StackHeaderCustomization.tsx

@@ -1,8 +1,7 @@
 import * as React from 'react';
 import { View, StyleSheet, ScrollView, Alert, Platform } from 'react-native';
 import { Button, Appbar } from 'react-native-paper';
-import { BlurView } from 'expo-blur';
-import { MaterialCommunityIcons } from '@expo/vector-icons';
+import MaterialCommunityIcons from 'react-native-vector-icons/MaterialCommunityIcons';
 import { RouteProp, ParamListBase } from '@react-navigation/native';
 import {
   createStackNavigator,
@@ -10,6 +9,7 @@ import {
   HeaderBackground,
   useHeaderHeight,
 } from '@react-navigation/stack';
+import BlurView from '../Shared/BlurView';
 import Article from '../Shared/Article';
 import Albums from '../Shared/Albums';
 

example/src/Shared/BlurView.native.tsx

@@ -0,0 +1,3 @@
+import { BlurView } from 'expo-blur';
+
+export default BlurView;

example/src/Shared/BlurView.tsx

@@ -0,0 +1,12 @@
+import * as React from 'react';
+import { View, ViewProps } from 'react-native';
+
+type Props = ViewProps & {
+  tint: 'light' | 'dark';
+  intensity: number;
+};
+
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+export default function BlurView({ tint, intensity, ...rest }: Props) {
+  return <View {...rest} />;
+}

example/src/index.tsx

@@ -11,10 +11,7 @@ import {
 } from 'react-native';
 // eslint-disable-next-line import/no-unresolved
 import { enableScreens } from 'react-native-screens';
-import RNRestart from 'react-native-restart';
-import { Updates } from 'expo';
-import { Asset } from 'expo-asset';
-import { MaterialIcons } from '@expo/vector-icons';
+import MaterialIcons from 'react-native-vector-icons/MaterialIcons';
 import {
   Provider as PaperProvider,
   DefaultTheme as PaperLightTheme,
@@ -36,11 +33,11 @@ import {
 } from '@react-navigation/drawer';
 import {
   createStackNavigator,
-  Assets as StackAssets,
   StackNavigationProp,
   HeaderStyleInterpolators,
 } from '@react-navigation/stack';
 
+import { restartApp } from './Restart';
 import AsyncStorage from './AsyncStorage';
 import LinkingPrefixes from './LinkingPrefixes';
 import SettingsItem from './Shared/SettingsItem';
@@ -126,12 +123,10 @@ const Stack = createStackNavigator<RootStackParamList>();
 const NAVIGATION_PERSISTENCE_KEY = 'NAVIGATION_STATE';
 const THEME_PERSISTENCE_KEY = 'THEME_TYPE';
 
-Asset.loadAsync(StackAssets);
-
 export default function App() {
   const [theme, setTheme] = React.useState(DefaultTheme);
 
-  const [isReady, setIsReady] = React.useState(false);
+  const [isReady, setIsReady] = React.useState(Platform.OS === 'web');
   const [initialState, setInitialState] = React.useState<
     InitialState | undefined
   >();
@@ -307,12 +302,7 @@ export default function App() {
                         value={I18nManager.isRTL}
                         onValueChange={() => {
                           I18nManager.forceRTL(!I18nManager.isRTL);
-                          // @ts-ignore
-                          if (global.Expo) {
-                            Updates.reloadFromCache();
-                          } else {
-                            RNRestart.Restart();
-                          }
+                          restartApp();
                         }}
                       />
                       <Divider />