Individual skill
react-native-patterns
React Native and Expo app patterns — Expo Router navigation, state separation (server/client/route/form), TanStack Query data fetching with Zod, performant lists, NativeWind/StyleSheet styling, native APIs, and secure storage. Use when building or editing React Native / Expo screens, components, navigation, or data layers.
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# React Native / Expo Patterns
Practical patterns for building production React Native apps with Expo. Covers navigation, state, data fetching, lists, styling, and native APIs. Pairs with the `rules/react-native/` ruleset: rules say *what* to enforce, this skill shows *how*.
Libraries named below (NativeWind, Zustand/Jotai, TanStack Query) are common, well-established options shown for illustration — the patterns matter more than the specific package, and any equivalent works. Zod is used for validation to stay consistent with ECC's existing `typescript/` rules.
These patterns assume the managed Expo workflow (Expo Router, EAS, `expo-*` modules) on the New Architecture (the default in recent Expo SDKs, mandatory from SDK 55+). They do NOT assume the browser DOM — React Native has no `<div>`, no URL bar, and no web data-fetching defaults.
## When to Activate
Use this skill when:
- Building or editing React Native / Expo screens, components, or navigation
- Setting up routing with Expo Router (file-based `app/` directory)