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Found 1,941 Skills
React Native Reanimated 4.x animation patterns. Use when adding animations, transitions, entering/exiting effects, or gesture-driven animations to React Native screens. Replaces Framer Motion for mobile.
Develop React Native, Flutter, or native mobile apps with modern architecture patterns. Masters cross-platform development, native integrations, offline sync, and app store optimization. Use PROACTIVELY for mobile features, cross-platform code, or app optimization.
Security - React Native Best Practices. Use when reviewing security, implementing auth, or hardening code.
TanStack Form v1 headless form state management for React. Covers field validation (sync/async, debouncing), form submission, array fields, linked fields, form composition patterns, and Standard Schema integration (Zod, Valibot, ArkType, Yup). Use when building forms with complex validation, implementing reusable form components, handling dynamic field lists, managing form state, or integrating validation libraries.
Testing React Native. Use when writing tests, reviewing test coverage, or setting up testing.
React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance pat...
Load PROACTIVELY when task involves writing tests, improving coverage, or test infrastructure. Use when user says "add tests", "write unit tests", "set up E2E testing", "improve coverage", or "add mocks". Covers Vitest/Jest unit tests, React Testing Library component tests, Playwright E2E tests, MSW API mocking, test organization and naming, fixture management, coverage targets and thresholds, snapshot testing, and CI integration.
React performance optimization patterns including memoization, code splitting, bundle size reduction, re-render elimination, and profiling. Covers React Compiler automatic optimization, manual memo/useMemo/useCallback targeting, React.lazy with Suspense, barrel file avoidance, content-visibility for large lists, startTransition for non-urgent updates, and React DevTools profiling. Use when optimizing React app performance, reducing bundle size, eliminating unnecessary re-renders, debugging slow components, code splitting, or profiling rendering bottlenecks. Use for performance audit, bundle analysis, re-render diagnosis, lazy loading, virtualization.
Use when React Hooks patterns including useState, useEffect, useContext, useMemo, useCallback, and custom hooks. Use for modern React development.
React composition patterns that scale. Use when refactoring components with boolean prop proliferation, building flexible component libraries, or designing reusable APIs. Triggers on tasks involving compound components, render props, context providers, or component architecture. Includes React 19 API changes.
React and Next.js performance patterns. Use when writing, reviewing, or optimizing React components.
TanStack DevTools for debugging Query, Router, and Form state in React apps. Use when setting up devtools, debugging cache state, or inspecting route trees. Use for devtools, react-query-devtools, router-devtools, form-devtools, debug, inspect, cache-viewer.