React Expert
Jeffallan/claude-skills
Builds React 19 components in TypeScript with Server Components, useActionState forms, custom hooks and state libraries, checked with tsc and React Testing Library.
React/Next.js 컴포넌트 설계 패턴 라이브러리. An agent skill from revfactory/harness-100.
Install Component Patterns
$ npx skills add revfactory/harness-100 --skill component-patterns -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install revfactory/harness-100 component-patterns --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .claude/skills && cp -r skills-src/ko/16-fullstack-webapp/.claude/skills/component-patterns .claude/skills/component-patterns && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "component-patterns" agent skill from https://github.com/revfactory/harness-100/tree/main/ko/16-fullstack-webapp/.claude/skills/component-patterns into .claude/skills/component-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "component-patterns", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/revfactory/harness-100/tree/main/ko/16-fullstack-webapp/.claude/skills/component-patternsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add revfactory/harness-100 --skill component-patterns -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install revfactory/harness-100 component-patterns --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .agents/skills && cp -r skills-src/ko/16-fullstack-webapp/.claude/skills/component-patterns .agents/skills/component-patterns && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "component-patterns" agent skill from https://github.com/revfactory/harness-100/tree/main/ko/16-fullstack-webapp/.claude/skills/component-patterns into .agents/skills/component-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "component-patterns", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add revfactory/harness-100 --skill component-patterns -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install revfactory/harness-100 component-patterns --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/ko/16-fullstack-webapp/.claude/skills/component-patterns .cursor/skills/component-patterns && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "component-patterns" agent skill from https://github.com/revfactory/harness-100/tree/main/ko/16-fullstack-webapp/.claude/skills/component-patterns into .cursor/skills/component-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "component-patterns", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/revfactory/harness-100.git --path ko/16-fullstack-webapp/.claude/skills/component-patterns--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add revfactory/harness-100 --skill component-patterns -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install revfactory/harness-100 component-patterns --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/ko/16-fullstack-webapp/.claude/skills/component-patterns .gemini/skills/component-patterns && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "component-patterns" agent skill from https://github.com/revfactory/harness-100/tree/main/ko/16-fullstack-webapp/.claude/skills/component-patterns into .gemini/skills/component-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "component-patterns", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install revfactory/harness-100 component-patternsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add revfactory/harness-100 --skill component-patterns -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .github/skills && cp -r skills-src/ko/16-fullstack-webapp/.claude/skills/component-patterns .github/skills/component-patterns && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "component-patterns" agent skill from https://github.com/revfactory/harness-100/tree/main/ko/16-fullstack-webapp/.claude/skills/component-patterns into .github/skills/component-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "component-patterns", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add revfactory/harness-100 --skill component-patterns -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install revfactory/harness-100 component-patterns --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/ko/16-fullstack-webapp/.claude/skills/component-patterns .opencode/skills/component-patterns && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "component-patterns" agent skill from https://github.com/revfactory/harness-100/tree/main/ko/16-fullstack-webapp/.claude/skills/component-patterns into .opencode/skills/component-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "component-patterns", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
component-patterns- GitHub stars
- 1.3k
- Token cost
- ~1.1k tokens
- SKILL.md length
- 411 words
- Files
- 1
- Skills in repo
- 464
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
React/Next.js 컴포넌트 설계 패턴 라이브러리. An agent skill from revfactory/harness-100.
- Works in 6 steps: Compound Components → Render Props / Children as Function → Custom Hooks (추출 패턴) → …
- Tasks that involve State management
- SKILL.md covers 대상 에이전트, 컴포넌트 설계 패턴, 상태관리 전략 선택 가이드 and Next.js App Router 폴더 구조, plus 4 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Component Patterns is an agent skill from revfactory/harness-100. React/Next.js 컴포넌트 설계 패턴 라이브러리. Compound/Render Props/HOC/Custom Hooks 패턴, 상태관리 전략(Zustand/React Query/Context), 폴더 구조 컨벤션을 제공하는 frontend-dev 확장 스킬. '컴포넌트 패턴', 'React 패턴', '상태관리', '폴더 구조', 'Custom Hook', '컴포넌트 분리' 등 프론트엔드 아키텍처 설계 시 사용한다. 단, 실제 코드 구현이나 백엔드 로직은 이 스킬의 범위가 아니다.
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Frontend & Design, covering State management. It works with React, TanStack, Next.js and Zustand. The licence is Apache-2.0.
When your agent uses it
- Tasks that involve State management
Example prompts
- “React 패턴”
- “Custom Hook”
- “/component-patterns”
Workflow steps
6 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit 8e8d35c. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Component Patterns loads about 1.1k tokens when it runs. Until then it costs about 73 tokens; SKILL.md has 411 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from revfactory/harness-100 at commit 8e8d35c, republished under its Apache-2.0 licence (© revfactory). 411 words, ~1,078 tokens.
Download SKILL.mdSave it as
.claude/skills/component-patterns/SKILL.md (or your agent's skills folder).- name
- component-patterns
- description
- React/Next.js 컴포넌트 설계 패턴 라이브러리. Compound/Render Props/HOC/Custom Hooks 패턴, 상태관리 전략(Zustand/React Query/Context), 폴더 구조 컨벤션을 제공하는 frontend-dev 확장 스킬. '컴포넌트 패턴', 'React 패턴', '상태관리', '폴더 구조', 'Custom Hook', '컴포넌트 분리' 등 프론트엔드 아키텍처 설계 시 사용한다. 단, 실제 코드 구현이나 백엔드 로직은 이 스킬의 범위가 아니다.
Component Patterns — React/Next.js 컴포넌트 설계 패턴
frontend-dev 에이전트가 프론트엔드 개발 시 활용하는 컴포넌트 패턴, 상태관리 전략, 프로젝트 구조 레퍼런스.
대상 에이전트
frontend-dev — 이 스킬의 패턴을 컴포넌트 설계와 상태관리에 직접 적용한다.
컴포넌트 설계 패턴
1. Compound Components
부모-자식이 암묵적 상태를 공유하는 패턴.
적합: Tab, Accordion, Dropdown, Select 등 복합 UI
구조: <Select> + <Select.Trigger> + <Select.Option>
핵심: Context로 상태 공유, children으로 유연한 구성
2. Render Props / Children as Function
렌더링 로직을 외부에 위임.
적합: 데이터 fetching 래퍼, 마우스/스크롤 추적
구조: <DataLoader render={(data) => <UI data={data} />} />
주의: Hook 패턴으로 대체 가능한 경우 Hook 우선
3. Custom Hooks (추출 패턴)
상태 로직을 재사용 가능한 Hook으로 추출.
적합: 폼 관리, API 호출, 로컬스토리지, 디바운스
네이밍: use 프리픽스 필수 — useForm, useDebounce, useAuth
4. Container/Presentational 분리
데이터 로직(Container)과 UI 표현(Presentational) 분리.
적합: 대규모 앱, 테스트 용이성 필요 시 Container: 데이터 fetch, 상태 관리, 이벤트 핸들러 Presentational: props만 받아 렌더링, 순수 함수적
5. Higher-Order Component (HOC)
컴포넌트를 감싸 기능을 추가.
적합: 인증 가드, 레이아웃 래퍼, 에러 바운더리
네이밍: with 프리픽스 — withAuth, withLayout
주의: Hook/Context로 대체 가능하면 그것 우선
6. Headless Component
UI 없이 동작/상태만 제공.
적합: 디자인 시스템에 구애받지 않는 로직 공유
예시: headless useCombobox, useDialog, useTable
상태관리 전략 선택 가이드
| 상태 유형 | 추천 도구 | 근거 |
|---|---|---|
| UI 로컬 상태 | useState, useReducer | 컴포넌트 내부 |
| 서버 상태 | React Query (TanStack Query) | 캐싱, 리페치, 낙관적 업데이트 |
| 전역 클라이언트 상태 | Zustand | 간결, 보일러플레이트 최소 |
| 복잡한 전역 상태 | Zustand + Immer | 불변성 편의 |
| URL 상태 | nuqs / useSearchParams | 필터, 페이지네이션 |
| 폼 상태 | React Hook Form + Zod | 유효성 검증 통합 |
| 테마/언어 | Context + Provider | 변경 빈도 낮음 |
Show full SKILL.md (163 more words)Show less
상태 배치 결정 흐름
이 상태를 URL에서 복원해야 하는가? → URL 상태
서버 데이터인가? → React Query
여러 컴포넌트가 공유하는가? → Zustand
한 컴포넌트 내부인가? → useState
복잡한 전환 로직인가? → useReducerNext.js App Router 폴더 구조
권장 구조 (Feature-Based)
src/
├── app/ # Next.js App Router
│ ├── (auth)/ # 인증 관련 라우트 그룹
│ │ ├── login/page.tsx
│ │ └── register/page.tsx
│ ├── (main)/ # 메인 라우트 그룹
│ │ ├── dashboard/page.tsx
│ │ └── settings/page.tsx
│ ├── api/ # API Routes
│ │ └── [...]/route.ts
│ ├── layout.tsx # 루트 레이아웃
│ └── page.tsx # 홈
├── components/
│ ├── ui/ # 범용 UI (Button, Input, Modal)
│ └── features/ # 기능별 컴포넌트
│ ├── auth/
│ └── dashboard/
├── hooks/ # Custom Hooks
├── lib/ # 유틸, 설정
│ ├── api.ts # API 클라이언트
│ ├── auth.ts # 인증 유틸
│ └── utils.ts
├── stores/ # Zustand 스토어
├── types/ # TypeScript 타입
└── styles/ # 전역 스타일컴포넌트 파일 컨벤션
| 항목 | 규칙 |
|---|---|
| 파일명 | PascalCase: UserProfile.tsx |
| 디렉토리 | kebab-case: user-profile/ |
| 인덱스 | index.ts로 re-export |
| 테스트 | UserProfile.test.tsx 동일 디렉토리 |
| 스토리 | UserProfile.stories.tsx 동일 디렉토리 |
| 타입 | 같은 파일 또는 types.ts 분리 |
성능 최적화 패턴
| 패턴 | 언제 | 도구 |
|---|---|---|
| 메모이제이션 | 비싼 계산, 잦은 리렌더 | useMemo, React.memo |
| 지연 로딩 | 초기 번들 크기 | React.lazy, next/dynamic |
| 가상화 | 1000+ 아이템 리스트 | @tanstack/react-virtual |
| 이미지 최적화 | 이미지 로딩 | next/image |
| 코드 스플리팅 | 라우트별 분리 | App Router 자동 |
| 낙관적 업데이트 | 즉각 피드백 | React Query onMutate |
| Debounce | 검색, 입력 | useDeferredValue 또는 custom hook |
에러 처리 패턴
계층적 에러 바운더리
RootErrorBoundary (전역)
└── LayoutErrorBoundary (섹션별)
└── ComponentErrorFallback (개별)API 에러 처리
| HTTP 상태 | 클라이언트 처리 |
|---|---|
| 401 | 자동 로그아웃 + 리다이렉트 |
| 403 | 권한 없음 UI |
| 404 | Not Found 페이지 |
| 422 | 폼 필드별 에러 표시 |
| 429 | 재시도 + 대기 안내 |
| 500 | 일반 에러 UI + 재시도 버튼 |
접근성 (a11y) 체크리스트
- 모든 이미지에 alt 텍스트
- 키보드 네비게이션 (Tab, Enter, Escape)
- ARIA 라벨 (aria-label, role)
- 색상 대비 4.5:1 이상
- 포커스 표시자 visible
- 스크린 리더 테스트
- 시맨틱 HTML (button, nav, main, section)
© revfactory, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in ko/16-fullstack-webapp/.claude/skills/component-patterns of revfactory/harness-100.
Open the folder on GitHubat commit 8e8d35c
Compare with similar skills
Component Patterns next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Component Patterns this skillrevfactory/harness-100 | 1.3k | — | ~1.1k | Automated safety check: Pass | Apache-2.0 | |
| React ExpertJeffallan/claude-skills | 12k | — | ~1.4k | Automated safety check: Pass | MIT | |
| Nextjs15 Initbear2u/my-skills | 933 | — | ~2.4k | Automated safety check: Pass | None | |
| Opik Frontend Patternscomet-ml/opik | 22k | — | ~1.1k | Automated safety check: Pass | Apache-2.0 | |
| State Managementemanueleielo/deepagents-open-lovable | 111 | — | ~1.7k | Automated safety check: Pass | None | |
| Moai Ref React Patternsmodu-ai/moai-adk | 1.2k | — | ~1.8k | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Component Patterns
What does Component Patterns do?
React/Next.js 컴포넌트 설계 패턴 라이브러리. An agent skill from revfactory/harness-100. Component Patterns is an agent skill from revfactory/harness-100.js 컴포넌트 설계 패턴 라이브러리.
When should I use Component Patterns?
Component Patterns fits situations like: tasks that involve State management.
How do I install Component Patterns in Claude Code?
Run `npx skills add revfactory/harness-100 --skill component-patterns -a claude-code`. Or copy the skill folder (ko/16-fullstack-webapp/.claude/skills/component-patterns in revfactory/harness-100) into .claude/skills/component-patterns in your project. Claude Code loads it when a task matches its description.
How do I install Component Patterns in Codex?
Run `npx skills add revfactory/harness-100 --skill component-patterns -a codex`. Or copy the skill folder (ko/16-fullstack-webapp/.claude/skills/component-patterns in revfactory/harness-100) into .agents/skills/component-patterns in your project. Codex loads it when a task matches its description.
Can I use Component Patterns in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add revfactory/harness-100 --skill component-patterns -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/component-patterns, .gemini/skills/component-patterns, .github/skills/component-patterns and .opencode/skills/component-patterns in your project.
What does Component Patterns need to run?
SKILL.md names no scripts, command-line tools or credentials: Component Patterns is instructions for the agent only.
Does Component Patterns access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Component Patterns safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Component Patterns use?
Component Patterns is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Component Patterns use?
About 1.1k tokens (SKILL.md is roughly 4.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Component Patterns?
Skills that share tags, products or a category with Component Patterns: React Expert (Jeffallan/claude-skills, 12k stars), Nextjs15 Init (bear2u/my-skills, 933 stars), Opik Frontend Patterns (comet-ml/opik, 22k stars) and State Management (emanueleielo/deepagents-open-lovable, 111 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Component Patterns?
revfactory (a GitHub user) maintains it in revfactory/harness-100, which has 1,290 GitHub stars. The repository holds 464 skills in this directory. The repository was last updated on March 22, 2026.
Source: revfactory/harness-100 on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.