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Enforce a Core Web Vitals / Lighthouse performance budget on a Next.js site — LCP, CLS, INP, bundle size, images. Use before shipping a page or when a page feels slow.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Design, build, verify, and publish a curated Claude Code pack — a reusable collection of rules, skills, hooks, loops, and review agents — to GitHub. Trigger this skill whenever the user wants to "create a Claude Code pack", "build a rules/hooks/skills collection", "make a guardrail pack", "package my hooks/skills/agents", "publish a Claude Code config to GitHub", or assemble enforced standards for a stack (e.g. Next.js + Supabase, Django, etc.). This skill is the methodology that produced github.com/m-binimran/dev-pack; reuse it instead of re-deriving the process. Run it BEFORE writing any pack files — it sequences research, clarification, building, verification, and safe publishing.
Audit a web page/component against WCAG 2.2 AA — semantics, keyboard, contrast, labels, focus, alt text. Use when reviewing UI for accessibility or before shipping a page.
Implement web animations with the right engine (Motion, GSAP, Anime.js, React Spring, tailwindcss-motion) and a mandatory prefers-reduced-motion fallback at 60fps. Use when adding any motion to a site.
Design Next.js route handlers and server actions with input validation, correct status codes, error handling, and rate limiting. Use when building an API endpoint, server action, or webhook receiver.
Get Next.js App Router caching right — static vs dynamic rendering, fetch cache, revalidatePath/revalidateTag, and ISR. Use when data is stale, a page won't update, or you're tuning performance vs freshness.
Build a production React component on shadcn/ui + Tailwind — variants, compound pattern, accessible states, and a clean prop API. Use when creating a new UI component or refactoring a messy one.
| name | perf-budget |
| description | Enforce a Core Web Vitals / Lighthouse performance budget on a Next.js site — LCP, CLS, INP, bundle size, images. Use before shipping a page or when a page feels slow. |
next/image (lazy, sized, modern formats). Set width/height to reserve space → fixes CLS.next/font (self-hosted, display: swap) — no layout shift, no render-block."use client" only where needed. dynamic() import heavy/below-fold
components. Watch big date/icon/chart libs.priority on the LCP image, no blocking work above it.revalidate.next build and read the real numbers. Report measured values against the budget.