React Native Design Skill for Codex

Master React Native styling, navigation, and Reanimated animations for cross-platform mobile development. Use when building React Native apps, implementing navigation patterns, or creating performant animations.

17k tokens

context cost

the whole folder, loaded on every use

files

instructions only

copies elsewhere

how many repositories repackaged it

38452

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/wshobson/agents --skill react-native-design

The instruction itself

6 sections, as written by the author

React Native Design

Master React Native styling patterns, React Navigation, and Reanimated 3 to build performant, cross-platform mobile applications with native-quality user experiences.

When to Use This Skill

Building cross-platform mobile apps with React Native
Implementing navigation with React Navigation 6+
Creating performant animations with Reanimated 3
Styling components with StyleSheet and styled-components
Building responsive layouts for different screen sizes
Implementing platform-specific designs (iOS/Android)
Creating gesture-driven interactions with Gesture Handler
Optimizing React Native performance

Detailed section: Core Concepts

Originally a 6471-byte section in this SKILL.md. Moved to references/details.md to fit Codex's 8 KB skill body cap.

Quick Start Component

import React from 'react';
import {
  View,
  Text,
  StyleSheet,
  Pressable,
  Image,
} from 'react-native';
import Animated, {
  useSharedValue,
  useAnimatedStyle,
  withSpring,
} from 'react-native-reanimated';

interface ItemCardProps {
  title: string;
  subtitle: string;
  imageUrl: string;
  onPress: () => void;
}

const AnimatedPressable = Animated.createAnimatedComponent(Pressable);

export function ItemCard({ title, subtitle, imageUrl, onPress }: ItemCardProps) {
  const scale = useSharedValue(1);

  const animatedStyle = useAnimatedStyle(() => ({
    transform: [{ scale: scale.value }],
  }));

  return (
    <AnimatedPressable
      style={[styles.card, animatedStyle]}
      onPress={onPress}
      onPressIn={() => { scale.value = withSpring(0.97); }}
      onPressOut={() => { scale.value = withSpring(1); }}
    >
      <Image source={{ uri: imageUrl }} style={styles.image} />
      <View style={styles.content}>
        <Text style={styles.title} numberOfLines={1}>
          {title}
        </Text>
        <Text style={styles.subtitle} numberOfLines={2}>
          {subtitle}
        </Text>
      </View>
    </AnimatedPressable>
  );
}

const styles = StyleSheet.create({
  card: {
    backgroundColor: '#ffffff',
    borderRadius: 16,
    overflow: 'hidden',
    shadowColor: '#000',
    shadowOffset: { width: 0, height: 2 },
    shadowOpacity: 0.1,
    shadowRadius: 8,
    elevation: 4,
  },
  image: {
    width: '100%',
    height: 160,
    backgroundColor: '#f3f4f6',
  },
  content: {
    padding: 16,
    gap: 4,
  },
  title: {
    fontSize: 18,
    fontWeight: '600',
    color: '#1f2937',
  },
  subtitle: {
    fontSize: 14,
    color: '#6b7280',
    lineHeight: 20,
  },
});

Best Practices

Use TypeScript: Define navigation and prop types for type safety
Memoize Components: Use React.memo and useCallback to prevent unnecessary rerenders
Run Animations on UI Thread: Use Reanimated worklets for 60fps animations
Avoid Inline Styles: Use StyleSheet.create for performance
Handle Safe Areas: Use SafeAreaView or useSafeAreaInsets
Test on Real Devices: Simulator/emulator performance differs from real devices
Use FlatList for Lists: Never use ScrollView with map for long lists
Platform-Specific Code: Use Platform.select for iOS/Android differences

Common Issues

Gesture Conflicts: Wrap gestures with GestureDetector and use simultaneousHandlers
Navigation Type Errors: Define ParamList types for all navigators
Animation Jank: Move animations to UI thread with runOnUI worklets
Memory Leaks: Cancel animations and cleanup in useEffect
Font Loading: Use expo-font or react-native-asset for custom fonts
Safe Area Issues: Test on notched devices (iPhone, Android with cutouts)

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How to use it

Copy the folder

Take wshobson/react-native-design from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

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