coding

name	coding
description	React Native coding guidance — consults official docs before writing code and suggests verification after. Use when writing components, implementing features, building screens, fixing queries, or adding views. Triggers on "write a component", "implement this feature", "build this screen", "add a view", "React Native code", "fix this query", "use best practices".
allowed-tools	Read, Grep, Glob, Skill

Skill: coding

On load: Read ../../.claude-plugin/plugin.json from this skill's base directory. Display coding v{version} before proceeding.

React Native coding guidance that ensures docs are consulted before writing code and verification is suggested after.

---

Step 1: Load Docs

Load the docs skill immediately:

Skill(react-native-foundations:docs)

---

Step 2: Search Docs First

Before writing any code:

1. Identify which RN APIs and components the task involves
2. Grep ${CLAUDE_SKILL_DIR}/../../refs/react-native-docs/ for those APIs
3. Read relevant doc files (max 3 most relevant)
4. Note platform differences, deprecation warnings, or required props

---

Step 3: Write Code

1. Follow patterns from the docs, not from memory or guessing
2. Use correct prop types and required props
3. Note platform-specific behavior inline with Platform.OS checks where needed
4. Follow New Architecture patterns if the project uses new arch (check for Fabric/Turbo Module config)

---

Step 4: Verify

After implementation, suggest verification:

• "/react-native-foundations:layout-check to verify visual layout"
• "/react-native-foundations:a11y-audit to check accessibility"
• "/react-native-foundations:debug to check for console errors"
• If errors: "/react-native-foundations:diagnose to diagnose"

---

Common Gotchas

• FlatList requires keyExtractor or key prop on items
• ScrollView inside FlatList causes performance issues
• Absolute positioning works differently than web CSS
• StatusBar behavior differs iOS vs Android
• SafeAreaView only works on iOS (use react-native-safe-area-context for cross-platform)
• Dimensions API returns points not pixels on iOS (3x on Retina)
• TextInput onChangeText gives string, onChange gives event object
• Prefer Pressable over TouchableOpacity (newer, more flexible)
• flex: 1 in RN is flexGrow: 1, flexShrink: 1, flexBasis: 0 — not the same as CSS
• overflow defaults to hidden on Android, visible on iOS
• fetch(fileUri).blob() produces 0-byte blobs on RN — use FormData with { uri, type, name } for file uploads