핵심 웹 바이탈, 지연 로딩, 코드 분할, 번들 분석.
이 스킬은 웹 성능 최적화에 초점을 맞춘 규칙 및 모범 사례 모음입니다. 핵심 웹 바이탈 지표(LCP, INP, CLS)를 충족하고, 이미지 및 컴포넌트 지연 로딩, 라우트 기반 코드 분할, 이미지 최적화(WebP/AVIF), 번들 분석 도구 사용, 효과적인 캐싱 전략, 데이터베이스 쿼리 최적화, 그리고 레이아웃 이동 방지 등 성능에 영향을 미치는 모든 영역을 다룹니다. 주로 Next.js와 React 애플리케이션을 대상으로 하며, 개발자가 성능 병목 지점을 식별하고 개선할 수 있도록 구체적인 임계값과 도구 사용법을 제공합니다. `next/dynamic`, `@next/bundle-analyzer`, `React.lazy()` 등 프레임워크 내장 기능을 활용하여 실무에 바로 적용 가능한 지침을 제시합니다.
npx skills add https://github.com/YepAPI/skills/tree/HEAD/skills/performanceReact.lazy(), next/dynamicnext/image + sizes 속성 사용@next/bundle-analyzer — 큰 의존성 식별EXPLAIN ANALYZE로 느린 쿼리 찾기This repo contains 20 individual skills — each has its own dedicated page.
WCAG 2.1 AA — semantic HTML, keyboard navigation, screen readers.
Experiment setup, variant splitting, statistical significance, and feature flag integration.
CRUD generators, data tables, user management, role-based access, and bulk operations.
Monitor what ChatGPT and Gemini say about your brand using YepAPI.
Queue workers with BullMQ/Inngest/Trigger.dev, job retries, dead letter queues, concurrency.
Commander.js, interactive prompts with Clack, spinners, colors, config files, exit codes, and npm publishing.
cmdk integration, Cmd+K trigger, fuzzy search, grouped actions, keyboard navigation, and dynamic action registration.
Content planning with trend and sentiment data from YepAPI.
Content calendar, keyword-driven planning, and content briefs.
Theme switching with CSS variables, system preference detection, next-themes, and persistence.
Threaded comments, @mentions, reactions, moderation queue, optimistic UI, and cursor pagination.
Competitive analysis between domains using YepAPI.
Layout grids, KPI cards, data tables with sorting/filtering, sidebar navigation, and responsive breakpoints.
Data encryption — TLS everywhere, AES-256-GCM for PII, bcrypt passwords, encrypted backups.
Chart patterns with Recharts/Nivo/D3, responsive containers, color scales, and accessibility.
Drizzle schema definition, push vs migrate, type-safe queries, relations, transactions, and prepared statements.
Upload handling, resize/compress, CDN delivery, blur placeholders, and next/image patterns.
Local business and Google Maps research using YepAPI.
Cursor-based pagination, IntersectionObserver, virtualized lists with @tanstack/react-virtual, and scroll position restoration.
Chat UI components, streaming responses with AI SDK, context window management, and RAG patterns.
ElevenLabs text-to-speech with mac-style say UX.
Oracle CLI second-model review/debug/refactor/design with selected files, dry-run token checks, API or browser engine.
Capture and automate macOS UI with the Peekaboo CLI.
Generate multiple radically different interface designs for a module using parallel sub-agents. Use when user wants to design an API, explore interface options, compare module shapes, or mentions "design it twice".
Build a throwaway prototype to flesh out a design — a runnable terminal app for state/business-logic questions, or several radically different UI variations toggleable from one route.
Interview the user relentlessly about a plan or design until reaching shared understanding, resolving each branch of the decision tree. Use when user wants to stress-test a plan, get grilled on their design, or mentions "grill me".