docs: update React Native example

examples/ReactNativeExample/.bundle/config

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+BUNDLE_PATH: "vendor/bundle"
+BUNDLE_FORCE_RUBY_PLATFORM: 1

examples/ReactNativeExample/.eslintrc.js

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+module.exports = {
+  root: true,
+  extends: '@react-native',
+};

examples/ReactNativeExample/.gitignore

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+# OSX
+#
+.DS_Store
+
+# Xcode
+#
+build/
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata
+*.xccheckout
+*.moved-aside
+DerivedData
+*.hmap
+*.ipa
+*.xcuserstate
+ios/.xcode.env.local
+
+# Android/IntelliJ
+#
+build/
+.idea
+.gradle
+local.properties
+*.iml
+*.hprof
+.cxx/
+*.keystore
+!debug.keystore
+
+# node.js
+#
+node_modules/
+npm-debug.log
+yarn-error.log
+
+# fastlane
+#
+# It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the
+# screenshots whenever they are needed.
+# For more information about the recommended setup visit:
+# https://docs.fastlane.tools/best-practices/source-control/
+
+**/fastlane/report.xml
+**/fastlane/Preview.html
+**/fastlane/screenshots
+**/fastlane/test_output
+
+# Bundle artifact
+*.jsbundle
+
+# Ruby / CocoaPods
+/ios/Pods/
+/vendor/bundle/
+
+# Temporary files created by Metro to check the health of the file watcher
+.metro-health-check*
+
+# testing
+/coverage

examples/ReactNativeExample/.prettierrc.js

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+module.exports = {
+  arrowParens: 'avoid',
+  bracketSameLine: true,
+  bracketSpacing: false,
+  singleQuote: true,
+  trailingComma: 'all',
+};

examples/ReactNativeExample/.watchmanconfig

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+{}

examples/ReactNativeExample/App.tsx

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+/**
+ * Sample React Native App
+ * https://github.com/facebook/react-native
+ *
+ * @format
+ */
+
+import React from 'react';
+import type {PropsWithChildren} from 'react';
+import {
+  SafeAreaView,
+  ScrollView,
+  StatusBar,
+  StyleSheet,
+  Text,
+  useColorScheme,
+  View,
+} from 'react-native';
+import { socket } from './socket';
+import { useEffect, useState } from 'react';
+
+import {
+  Colors,
+  DebugInstructions,
+  Header,
+  LearnMoreLinks,
+  ReloadInstructions,
+} from 'react-native/Libraries/NewAppScreen';
+
+type SectionProps = PropsWithChildren<{
+  title: string;
+}>;
+
+function Section({children, title}: SectionProps): React.JSX.Element {
+  const isDarkMode = useColorScheme() === 'dark';
+  return (
+    <View style={styles.sectionContainer}>
+      <Text
+        style={[
+          styles.sectionTitle,
+          {
+            color: isDarkMode ? Colors.white : Colors.black,
+          },
+        ]}>
+        {title}
+      </Text>
+      <Text
+        style={[
+          styles.sectionDescription,
+          {
+            color: isDarkMode ? Colors.light : Colors.dark,
+          },
+        ]}>
+        {children}
+      </Text>
+    </View>
+  );
+}
+
+function App(): React.JSX.Element {
+  const [isConnected, setIsConnected] = useState(false);
+  const [transport, setTransport] = useState('N/A');
+
+  useEffect(() => {
+    if (socket.connected) {
+      onConnect();
+    }
+
+    function onConnect() {
+      setIsConnected(true);
+      setTransport(socket.io.engine.transport.name);
+
+      socket.io.engine.on('upgrade', (transport) => {
+        setTransport(transport.name);
+      });
+    }
+
+    function onDisconnect() {
+      setIsConnected(false);
+      setTransport('N/A');
+    }
+
+    socket.on('connect', onConnect);
+    socket.on('disconnect', onDisconnect);
+
+    return () => {
+      socket.off('connect', onConnect);
+      socket.off('disconnect', onDisconnect);
+    };
+  }, []);
+
+  return (
+    <View style={styles.container}>
+      <Text>Status: { isConnected ? 'connected' : 'disconnected' }</Text>
+      <Text>Transport: { transport }</Text>
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  sectionContainer: {
+    marginTop: 32,
+    paddingHorizontal: 24,
+  },
+  sectionTitle: {
+    fontSize: 24,
+    fontWeight: '600',
+  },
+  sectionDescription: {
+    marginTop: 8,
+    fontSize: 18,
+    fontWeight: '400',
+  },
+  highlight: {
+    fontWeight: '700',
+  },
+});
+
+export default App;

examples/ReactNativeExample/Gemfile

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+source 'https://rubygems.org'
+
+# You may use http://rbenv.org/ or https://rvm.io/ to install and use this version
+ruby ">= 2.6.10"
+
+# Cocoapods 1.15 introduced a bug which break the build. We will remove the upper
+# bound in the template on Cocoapods with next React Native release.
+gem 'cocoapods', '>= 1.13', '< 1.15'
+gem 'activesupport', '>= 6.1.7.5', '< 7.1.0'

examples/ReactNativeExample/README.md

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+This is a new [**React Native**](https://reactnative.dev) project, bootstrapped using [`@react-native-community/cli`](https://github.com/react-native-community/cli).
+
+# Getting Started
+
+>**Note**: Make sure you have completed the [React Native - Environment Setup](https://reactnative.dev/docs/environment-setup) instructions till "Creating a new application" step, before proceeding.
+
+## Step 1: Start the Metro Server
+
+First, you will need to start **Metro**, the JavaScript _bundler_ that ships _with_ React Native.
+
+To start Metro, run the following command from the _root_ of your React Native project:
+
+```bash
+# using npm
+npm start
+
+# OR using Yarn
+yarn start
+```
+
+## Step 2: Start your Application
+
+Let Metro Bundler run in its _own_ terminal. Open a _new_ terminal from the _root_ of your React Native project. Run the following command to start your _Android_ or _iOS_ app:
+
+### For Android
+
+```bash
+# using npm
+npm run android
+
+# OR using Yarn
+yarn android
+```
+
+### For iOS
+
+```bash
+# using npm
+npm run ios
+
+# OR using Yarn
+yarn ios
+```
+
+If everything is set up _correctly_, you should see your new app running in your _Android Emulator_ or _iOS Simulator_ shortly provided you have set up your emulator/simulator correctly.
+
+This is one way to run your app — you can also run it directly from within Android Studio and Xcode respectively.
+
+## Step 3: Start the Socket.IO server
+
+```bash
+cd server
+
+npm install
+
+npm start
+```
+
+## Step 4: Modifying your App
+
+Now that you have successfully run the app, let's modify it.
+
+1. Open `App.tsx` in your text editor of choice and edit some lines.
+2. For **Android**: Press the <kbd>R</kbd> key twice or select **"Reload"** from the **Developer Menu** (<kbd>Ctrl</kbd> + <kbd>M</kbd> (on Window and Linux) or <kbd>Cmd ⌘</kbd> + <kbd>M</kbd> (on macOS)) to see your changes!
+
+   For **iOS**: Hit <kbd>Cmd ⌘</kbd> + <kbd>R</kbd> in your iOS Simulator to reload the app and see your changes!
+
+## Congratulations! :tada:
+
+You've successfully run and modified your React Native App. :partying_face:
+
+### Now what?
+
+- If you want to add this new React Native code to an existing application, check out the [Integration guide](https://reactnative.dev/docs/integration-with-existing-apps).
+- If you're curious to learn more about React Native, check out the [Introduction to React Native](https://reactnative.dev/docs/getting-started).
+
+# Troubleshooting
+
+If you can't get this to work, see the [Troubleshooting](https://reactnative.dev/docs/troubleshooting) page.
+
+# Learn More
+
+To learn more about React Native, take a look at the following resources:
+
+- [React Native Website](https://reactnative.dev) - learn more about React Native.
+- [Getting Started](https://reactnative.dev/docs/environment-setup) - an **overview** of React Native and how setup your environment.
+- [Learn the Basics](https://reactnative.dev/docs/getting-started) - a **guided tour** of the React Native **basics**.
+- [Blog](https://reactnative.dev/blog) - read the latest official React Native **Blog** posts.
+- [`@facebook/react-native`](https://github.com/facebook/react-native) - the Open Source; GitHub **repository** for React Native.

examples/ReactNativeExample/__tests__/App.test.tsx

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+/**
+ * @format
+ */
+
+import 'react-native';
+import React from 'react';
+import App from '../App';
+
+// Note: import explicitly to use the types shipped with jest.
+import {it} from '@jest/globals';
+
+// Note: test renderer must be required after react-native.
+import renderer from 'react-test-renderer';
+
+it('renders correctly', () => {
+  renderer.create(<App />);
+});