Essential command-line tools and system utilities.
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.
Review checklists and patterns for React/TypeScript frontend code reviews. Use when: (1) reviewing React components, (2) checking TypeScript type safety, (3) validating hooks usage, (4) checking accessibility compliance.
Evaluate a React component against the Design System and propose UX/UI improvements based on Figma best practices. Use when reviewing components for design compliance, checking UI consistency, or improving user experience.
Next.js development tools for route analysis, component inspection, and build optimization
React 19 patterns and React Compiler optimization guidance. Understand when to use manual memoization vs letting the compiler optimize, and leverage new hooks like useActionState and useFormStatus.
Use PROACTIVELY when user asks for accessibility review, a11y audit, WCAG compliance check, screen reader testing, keyboard navigation validation, or color contrast analysis. Audits React/TypeScript applications for WCAG 2.2 Level AA compliance with risk-based severity scoring. Includes MUI framework awareness to avoid false positives. Not for runtime accessibility testing in production, automated remediation, or non-React frameworks.
Build high-integrity experimentation frameworks within React applications.
Auto-invoke when reviewing React, Vue, or frontend component code. Enforces component architecture, state management patterns, and UI best practices.
Performance optimization for React Native. Use when optimizing lists, preventing re-renders, memoizing components, or debugging performance issues in Expo/React Native apps.
Provides comprehensive testing strategies and patterns for React applications. This skill should be used when writing tests, setting up testing infrastructure, or deciding what to test.
React and Next.js performance optimization guidelines from Vercel Engineering. Use when writing new React components, implementing data fetching, reviewing code for performance issues, or optimizing bundle size and load times. Contains 40+ rules across 8 categories prioritized by impact.
Provides code quality standards for frontend applications. This skill should be used when configuring linting rules, organizing file structures, or ensuring consistency across React applications.
Provides code quality standards for frontend applications. This skill should be used when configuring linting rules, organizing file structures, or ensuring consistency across React applications.
Detect, isolate, and fix memory leaks in long-running React Single Page Applications.
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.
Systematic 10-phase debugging procedure for SvelteKit 2 + Svelte 5 frontend issues. Use when components fail to render, routing breaks, runes throw errors, or Encore client calls fail.
This skill should be used when adding error tracking and performance monitoring with Sentry and OpenTelemetry tracing to Next.js applications. Apply when setting up error monitoring, configuring tracing for Server Actions and routes, implementing logging wrappers, adding performance instrumentation, or establishing observability for debugging production issues.
Browser debugging and telemetry via Chrome DevTools Protocol. Use when testing the Astro dev server, inspecting network requests, debugging console errors, capturing screenshots, or interacting with DOM elements on localhost:4321.
