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hilmifawwazsaadhilmifawwazsaad/NextJS-js-Boilerplate/.agents/frontend/SKILL.md

frontend

Skill0 starsChanged 5 months agoMITView on GitHub

Generate production-grade Next.js (App Router) JSX code. Use for components, pages, layouts, and utilities — pure UI, no DB or server logic.

We split this skill into the rules it gives an agent

4 rules. 0 are common, 2 are distinctive, and 2 are very specific to this project.

  • 0

    Common

    Most of the 43 edited versions we read keep these.

  • 2

    Distinctive

    This author's own choices. Worth a look.

  • 2

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    All four states: loading · error · empty · ideal

    line 11
  2. Very specific:

    Only use libraries in package.json

    line 14
  3. Very specific:

    Never useEffect for data when Server Component works

    line 40
  4. Distinctive:

    Never invent design tokens, colors, or custom fonts

    line 47

“Common” is measured: kept by at least 6 in 10 of the 43 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

Read .agents/software-principles/SKILL.md first.

Pre-Code Checklist

  1. All four states: loading · error · empty · ideal
  2. Server vs. client boundary (default: Server Component)
  3. Existing conventions in app/, components/, hooks/, lib/
  4. Only use libraries in package.json

Architecture

NeedSolution
Fetch + render dataasync Server Component
useState / events / browser API'use client' — push as deep as possible
Reusable UIcomponents/ — server-first, add 'use client' only if needed
Custom logichooks/*.js (client) · lib/*.js (server/shared)

Extensions: .jsx for JSX · .js for hooks and utilities.

Four States (all required)

StateImplementation
Loadingloading.jsx or <Suspense fallback={<Skeleton />}>
Errorerror.jsx — must be 'use client'
EmptyInline message — helpful, not just "No data"
Not foundnot-found.jsx

Data Fetching

  • Server: async RSC + fetch with { next: { revalidate: N } } or cache() for dedup
  • Client: useEffect with cleanup — only when Server Component is impossible
  • Never useEffect for data when Server Component works
  • useEffect deps array must be exhaustive — no suppression comments. Extract stable refs with useCallback/useMemo if needed

Styling

  • Tailwind: existing tokens only. No [] arbitrary values unless truly one-off
  • CSS Modules: follow existing class naming pattern
  • Never invent design tokens, colors, or custom fonts

Forms, Routing & Quality

  • Mutations → Server Actions ('use server')
  • layout.jsx for shared UI. Export metadata or generateMetadata for SEO
  • next/image for images · next/font for fonts · @/ alias for all imports
  • Semantic HTML + ARIA. All interactive elements keyboard-accessible
  • Stable key props — never array index for dynamic lists
  • Env vars server-only unless NEXT_PUBLIC_ prefix

Never Do

  • Hooks or browser APIs in Server Components
  • .tsx/.ts extensions — this is a JS project
  • Libraries not in package.json
  • Invented design tokens or broken folder conventions
  • Skip any of the four states
  • key={index} on dynamic lists
  • Suppress useEffect exhaustive-deps lint rule

Download now (ZIP)

  • Other versions49 projects use a version of this.

    Word for word · 0

    None found.

    Edited · 0

    None found.

    Wrote their own version · 49

    1. langwatch/langwatch★ 5ksame name
    2. atopile/atopile★ 4ksame name
    3. leookun/cursor-byok★ 3.2ksame name
    4. theopenco/llmgateway★ 1.7ksame name
    5. notque/vexjoy-agent★ 444same name
    6. notque/claude-code-toolkit★ 442same name
    7. AlexPEClub/ai-coding-starter-kit★ 382same name
    8. OyadotAI/oya-browser★ 351same name
    9. speakeasy-api/gram★ 275same name
    10. ThePrimeagen/skills★ 234same name

    39 more not listed

    How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.

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  • In this repository6 other files it gives its agents.

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