name: mobile_react_native
router_kit: FullStackKit
description: React Native best practices, hooks, navigation and performance optimization.
metadata:
skillport:
category: development
tags: [accessibility, api integration, backend, browser apis, client-side, components, css3, debugging, deployment, frameworks, frontend, fullstack, html5, javascript, libraries, mobile react native, node.js, npm, performance optimization, responsive design, seo, state management, testing, typescript, ui/ux, web development] - mobile-flutter

📱 Mobile React Native

React Native best practices and performance optimization.

📁 1. Project Structure

src/
├── components/
│   ├── common/        # Reusable
│   └── screens/       # Screen components
├── hooks/             # Custom hooks
├── services/          # API, storage
├── store/             # State (Zustand)
├── navigation/
└── App.tsx

⚡ 2. Performance

// FlatList optimization
<FlatList
  data={items}
  keyExtractor={(item) => item.id}
  removeClippedSubviews={true}
  maxToRenderPerBatch={10}
  windowSize={5}
  getItemLayout={(data, index) => ({
    length: ITEM_HEIGHT,
    offset: ITEM_HEIGHT * index,
    index,
  })}
/>

// Memoization
const Component = React.memo(({ data }) => { });
const callback = useCallback(() => {}, [deps]);
const value = useMemo(() => compute(), [deps]);

🔐 3. Secure Storage

// ❌ AsyncStorage is not secure
// ✅ Use SecureStore
import * as SecureStore from 'expo-secure-store';

await SecureStore.setItemAsync('token', userToken);
const token = await SecureStore.getItemAsync('token');

🧭 4. Navigation

type RootStackParamList = {
  Home: undefined;
  Profile: { userId: string };
};

const Stack = createNativeStackNavigator<RootStackParamList>();

📦 5. State (Zustand)

import { create } from 'zustand';
import { persist } from 'zustand/middleware';

const useAuthStore = create(
  persist(
    (set) => ({
      user: null,
      login: (user) => set({ user }),
      logout: () => set({ user: null }),
    }),
    { name: 'auth-storage' }
  )
);

📱 6. Platform-Specific

import { Platform } from 'react-native';

const padding = Platform.select({ ios: 20, android: 0 });

// File based: Button.ios.tsx, Button.android.tsx

Mobile React Native v1.1 - Enhanced

🔄 Workflow

Source: React Native Performance Guide & Expo Guideline

Phase 1: Setup & Architecture

• [ ] Framework: Start with Expo (Managed Workflow), use expo-router v3.
• [ ] State: Separate server/client state using Zustand or TanStack Query.
• [ ] Styling: Establish consistent design system with NativeWind (Tailwind) or Restyle.

Phase 2: Performance Optimization

• [ ] Lists: Use FlashList (Shopify) instead of FlatList (5x performance).
• [ ] Images: Add caching and blurhash support with expo-image.
• [ ] Bundle: Activate Hermes engine and analyze bundle size.

Phase 3: Native Modules & Release

• [ ] Native: Write Custom Native Module (Turbo Modules) if needed.
• [ ] Updates: Perform OTA (Over-the-Air) updates with expo-updates without waiting for store approval.
• [ ] Profiling: Check FPS and Memory Leak with Flipper or React DevTools.

Checkpoints