Vite build optimization expert with deep knowledge of ESM-first development, HMR optimization, plugin ecosystem, production builds, library mode, and SSR configuration. Use PROACTIVELY for any Vite bundling issues including dev server performance, build optimization, plugin development, and modern ESM patterns. If a specialized expert is a better fit, I will recommend switching and stop.
This skill enforces cross-platform compatibility best practices for Expo apps targeting iOS, Android, and web. It should be used when creating new features, components, or screens to ensure they work correctly on all platforms. Use this skill when writing platform-specific code, using Platform.OS checks, creating platform-specific files (.web.tsx, .native.tsx, .ios.tsx, .android.tsx), or reviewing code for cross-platform issues.
Maps and documents the codebase. Generates `docs/CODEBASE_MAP.md` with architecture diagrams, module relationships, and data flow. Use when the user asks to "map the code", "explain the architecture", or "update documentation".
Check web interfaces against Vercel's design guidelines. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", "check my site against best practices", or "apply Vercel design guidelines".
Master Bun runtime workflows for full-stack development. Monorepos, bunx, lockfiles, performance optimization, and integration patterns.
Expert guidance for Turborepo and pnpm workspace management, build optimization, caching strategies, and monorepo architecture patterns. Use when working with Turbo monorepos, pnpm workspaces, or multi-package projects.
Modern React 19 with TypeScript development. Use for creating React components, hooks, context providers, and applications with strict TypeScript typing. Triggers on requests for React components, functional components, hooks, state management, event handling, or TypeScript interfaces/types for React.
Expert-level performance optimization, profiling, benchmarking, and tuning
Provides reverse engineering analysis support including function identification, data structure analysis, and behavior understanding. Use when analyzing unknown binaries, understanding program structure, or investigating binary behavior.
Diagnoses Burn deep learning errors including tensor shape mismatches, backend panics, autodiff issues, and training failures. Use when encountering runtime errors, compilation failures, or unexpected behavior in Burn code.
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 patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.
Debugging React render loops, infinite re-renders, and performance issues in Next.js. Use when encountering "Maximum update depth exceeded", useMemo/useCallback issues, useEffect dependency problems, or useSearchParams loops. Keywords: infinite loop, re-render, useMemo, useCallback, useEffect, Maximum update depth, React error 185.
Master React performance optimization with memoization, code splitting, profiling, and Web Vitals monitoring
Debug React components, fix hooks errors, resolve TypeScript issues, handle state management bugs, and fix rendering problems. Use when encountering React errors, hooks violations, type errors, or component rendering issues.
Specialized skill for testing frontend components using industry standard best practices. Use for testing React/Next.js components, writing test cases, and verifying UI logic.
Deep dive into the React Compiler (formerly React Forget) to tune automatic memoization and optimization profiles.
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 patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.
Next.js Router performance analysis and bottleneck identification workflow. Triggers when user reports performance issues, slow routing, or requests Next.js optimization analysis. Use for identifying FCP/LCP/CLS bottlenecks and Server Actions blocking.
Conduct rigorous, statistically grounded performance profiling for large React applications.
Analizador de rendimiento de código. Detecta N+1 queries, memory leaks, CPU bottlenecks, bundle size issues, rendering problems en React. Optimiza queries SQL, caching, lazy loading.
Provides performance optimization patterns for React applications. This skill should be used when optimizing bundle size, implementing code splitting, reducing re-renders, or improving web vitals.
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 patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.
