Frontend & UI

69 prioritized React performance rules covering waterfalls, bundle size, re-renders, and advanced patterns

Compound components, render props, and context patterns for scalable component APIs

Discriminated unions, conditional types, template literals, and utility type patterns

Design system implementation with Tailwind: tokens, variants, and component patterns

NativeWind and Tailwind setup in Expo with correct native class handling

React Native best practices: performance, navigation, native modules, and platform APIs

Mobile-first design patterns for iOS and Android: gestures, safe areas, and native feel

Expo native UI components: lists, modals, tabs, bottom sheets, and haptics

Data fetching for native apps: offline caching, background refresh, and sync patterns

Expo SDK upgrade guide covering breaking changes, native module compatibility, and migration steps

React and JavaScript animation library (formerly Framer Motion) for gestures, layout, and scroll-triggered animation.

Copy-owned React component library built on Radix UI and Tailwind CSS.