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23 performance optimization rules for React and Vite across build, code splitting, development, assets, environment, and bundle analysis. \n \n Covers six rule categories prioritized by impact: build optimization and code splitting (critical), development and asset handling (high), environment config and bundle analysis (medium) \n Includes route-based lazy loading with React.lazy() and Suspense, manual vendor chunk separation, and strategic prefetching patterns \n Provides recommended vite.conf

Performance and architecture patterns for React Native + Expo apps. Rules ranked by impact — fix CRITICAL before touching MEDIUM.

React and Next.js performance optimization guide with 64 prioritized rules across 8 categories. \n \n Organized by impact level, from critical waterfalls and bundle optimization down to advanced patterns, each rule includes incorrect/correct code examples and explanations \n Covers eight domains: async patterns, bundle size, server-side caching, client-side data fetching, re-render optimization, rendering performance, JavaScript efficiency, and advanced patterns \n Designed for use during compon

Specialized workflow for building React and Next.js 14+ applications with modern patterns including App Router, Server Components, TypeScript, and Tailwind CSS.

Structured performance optimization reference for React Native apps covering FPS, bundle size, TTI, and memory. \n \n Organized into 9 JavaScript/React guides (profiling, lists, animations, memory), 9 native optimization guides (Turbo Modules, threading, profiling), and 9 bundling guides (tree shaking, code splitting, size analysis) \n Each reference follows a hybrid format with quick patterns/commands, impact ratings (CRITICAL/HIGH/MEDIUM), and deep-dive explanations with prerequisites and comm

React composition patterns for scaling components and avoiding boolean prop proliferation. \n \n Covers four priority categories: component architecture, state management, implementation patterns, and React 19 APIs, each with specific rules and code examples \n Includes 10+ named patterns addressing compound components, context providers, state lifting, and explicit variants \n Designed for refactoring bloated components, building reusable libraries, and reviewing component architecture decision

Automated React codebase scanner that detects security, performance, correctness, and architecture issues. \n \n Generates a 0-100 diagnostic score with actionable findings across four categories: security vulnerabilities, performance bottlenecks, correctness errors, and architectural problems \n Designed for post-change workflows: run after code modifications, fix flagged issues, then re-run to verify improvements \n Supports verbose output and diff mode to highlight changes between scans \n Id

Domain-specific knowledge base for building videos with Remotion and React. \n \n Covers 30+ rule files spanning animations, audio, assets, 3D content, charts, text, transitions, and composition management \n Includes specialized guidance for captions, FFmpeg operations, audio visualization, and sound effects integration \n Provides patterns for dynamic metadata calculation, media inspection (duration, dimensions, frame extraction), and parametrizable compositions \n Supports advanced features l

React patterns for hooks, effects, refs, and component design with escape hatch guidance. \n \n Effects synchronize with external systems only (WebSocket, third-party libraries, browser APIs); most component logic should avoid Effects entirely \n Common anti-patterns: derived state, expensive calculations, prop-change resets, and event handling all belong outside Effects—use render calculations, useMemo, key props, and event handlers instead \n Effect dependencies must never be suppressed; use u

Expert React 18+ and React 19 component development with Server Components, hooks, and state management. \n \n Covers React 19 features including use() hook, useActionState forms, and Server Components in Next.js App Router \n Implements custom hooks, state management patterns (Context, Zustand, Redux), and data fetching with TanStack Query \n Enforces TypeScript strict mode, error boundaries, proper cleanup, and accessibility standards throughout \n Includes performance optimization via memoiza