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Master React Hooks including useState, useEffect, useContext, useReducer, and custom hooks with production-grade patterns
기본적으로 소스를 먼저 확인하는 Prompt가 선택됩니다. 직접 명령으로 전환하거나 로컬 사본을 다운로드할 수도 있습니다.
설치 여부를 결정하기 전에 SKILL.md와 SkillsMP에 표시된 보조 파일을 읽어 보세요.
Codex 또는 Claude로 설치 이 Prompt를 복사해 Codex, Claude 또는 다른 어시스턴트에 붙여 넣으면 Skill 페이지를 검토하고 설치를 진행할 수 있습니다.
직접 명령은 검토 Prompt를 거치지 않습니다. 실행하기 전에 소스를 확인하세요.
npx skills add https://github.com/pluginagentmarketplace/custom-plugin-react --skill react-hooks-patterns명령은 한 줄로 유지됩니다. 복사하기 전에 가로로 스크롤해 전체 내용을 확인하세요.
로컬 사본을 원하시나요? SkillsMP에서 현재 제공할 수 있는 파일을 다운로드하세요.
Build production-grade, accessible, and tested component libraries with Storybook, Chromatic, and design tokens
Build production-grade React apps with Next.js 14 App Router, Server Components, and Edge Runtime
Master React performance optimization with memoization, code splitting, profiling, and Web Vitals monitoring
SOC 직업 분류 기준
SKILL.md 표시 중
| name | react-hooks-patterns |
| description | Master React Hooks including useState, useEffect, useContext, useReducer, and custom hooks with production-grade patterns |
| sasmp_version | 2.0.0 |
| bonded_agent | 02-hooks-patterns |
| bond_type | PRIMARY_BOND |
| input_validation | {"required_context":[{"react_version":">=18.0.0"},{"node_version":">=18.0.0"}],"parameter_types":{"hook_name":"string","dependencies":"array"}} |
| output_format | {"code_examples":"jsx","test_template":"jest"} |
| error_handling | {"patterns":["exponential_backoff","abort_controller","cleanup_functions"],"retry_config":{"max_retries":3,"backoff_multiplier":2}} |
| observability | {"logging":"structured","metrics":["render_count","effect_duration"]} |
Master React Hooks patterns including built-in hooks (useState, useEffect, useContext, useReducer, useCallback, useMemo) and custom hook development for reusable logic.
const [state, setState] = useState(initialValue);
// Lazy initialization for expensive computations
const [state, setState] = useState(() => expensiveComputation());
// Functional updates when state depends on previous value
setState(prev => prev + 1);
useEffect(() => {
// Side effect code
const subscription = api.subscribe();
// Cleanup function
return () => {
subscription.unsubscribe();
};
}, [dependencies]); // Dependency array
const value = useContext(MyContext);
// Best practice: Create custom hook
function useMyContext() {
const context = useContext(MyContext);
if (!context) {
throw ();
}
context;
}
const [state, dispatch] = useReducer(reducer, initialState);
function reducer(state, action) {
switch (action.type) {
case 'INCREMENT':
return { count: state.count + 1 };
case 'DECREMENT':
return { count: state.count - 1 };
default:
return state;
}
}
const memoizedCallback = useCallback(
() => {
doSomething(a, b);
},
[a, b], // Dependencies
);
const memoizedValue = useMemo(
() => computeExpensiveValue(a, b),
[a, b]
);
const ref = useRef(initialValue);
// DOM access
const inputRef = useRef(null);
<input ref={inputRef} />
inputRef.current.focus();
// Mutable value that doesn't trigger re-render
const countRef = useRef(0);
function useFetch(url) {
const [data, setData] = useState(null);
const [loading, setLoading] = useState(true);
const [error, setError] = useState(null);
useEffect(() => {
let cancelled = false;
fetch(url)
.then(res => res.json())
.then(data => {
if (!cancelled) {
setData(data);
setLoading(false);
}
})
.catch(err => {
if (!cancelled) {
setError(err);
setLoading(false);
}
});
return () => {
cancelled = true;
};
}, [url]);
return { data, loading, error };
}
function useLocalStorage(key, initialValue) {
const [storedValue, setStoredValue] = useState(() => {
try {
const item = window.localStorage.getItem(key);
return item ? JSON.parse(item) : initialValue;
} catch (error) {
return initialValue;
}
});
const setValue = (value) => {
try {
const valueToStore = value instanceof Function ? value(storedValue) : value;
setStoredValue(valueToStore);
window.localStorage.setItem(key, JSON.stringify(valueToStore));
} catch (error) {
console.error(error);
}
};
return [storedValue, setValue];
}
function useDebounce(value, delay) {
const [debouncedValue, setDebouncedValue] = useState(value);
useEffect(() => {
const handler = setTimeout(() => {
setDebouncedValue(value);
}, delay);
return () => {
clearTimeout(handler);
};
}, [value, delay]);
return debouncedValue;
}
function usePrevious(value) {
const ref = useRef();
useEffect(() => {
ref.current = value;
}, [value]);
return ref.current;
}
function useToggle(initialValue = false) {
const [value, setValue] = useState(initialValue);
const toggle = useCallback(() => {
setValue(v => !v);
}, []);
return [value, toggle];
}
function useOnClickOutside(ref, handler) {
useEffect(() => {
const listener = (event) => {
if (!ref.current || ref.current.contains(event.target)) {
return;
}
handler(event);
};
document.addEventListener('mousedown', listener);
document.addEventListener('touchstart', listener);
return () => {
document.removeEventListener('mousedown', listener);
document.removeEventListener('touchstart', listener);
};
}, [ref, handler]);
}
function useFetchWithAbort(url) {
const [state, setState] = useState({ data: null, loading: true, error: null });
useEffect(() => {
const abortController = new AbortController();
fetch(url, { signal: abortController.signal })
.then(res => res.json())
.then(data => setState({ data, loading: false, error: null }))
.catch(err => {
if (err.name !== 'AbortError') {
setState({ data: null, loading: false, error: err });
}
});
return () => abortController.abort();
}, [url]);
return state;
}
function useAuthenticatedApi(url) {
const { token } = useAuth();
const { data, loading, error } = useFetch(url, {
headers: {
Authorization: `Bearer ${token}`
}
});
return { data, loading, error };
}
Can you:
// __tests__/useCustomHook.test.js
import { renderHook, act, waitFor } from '@testing-library/react';
import { useCustomHook } from '../useCustomHook';
describe('useCustomHook', () => {
beforeEach(() => {
jest.clearAllMocks();
});
it('should initialize with default state', () => {
const { result } = renderHook(() => useCustomHook());
expect(result.current.state).toBe(initialValue);
});
it('should handle async operations', async () => {
const { result } = renderHook(() => useCustomHook());
await act(async () => {
await result.current.asyncAction();
});
await waitFor(() => {
expect(result.current.loading).toBe(false);
});
});
it('should cleanup on unmount', () => {
const cleanup = jest.fn();
const { unmount } = renderHook(() => useCustomHook({ onCleanup: cleanup }));
unmount();
expect(cleanup).toHaveBeenCalled();
});
});
function useRetryAsync(asyncFn, options = {}) {
const { maxRetries = 3, backoff = 1000 } = options;
const [state, setState] = useState({ data: null, error: null, loading: false });
const execute = useCallback(async (...args) => {
setState(s => ({ ...s, loading: true, error: null }));
let lastError;
for (let attempt = 0; attempt <= maxRetries; attempt++) {
try {
const data = await asyncFn(...args);
setState({ data, error: null, loading: false });
return data;
} catch (error) {
lastError = error;
if (attempt < maxRetries) {
await new Promise(r => setTimeout(r, backoff * Math.pow(2, attempt)));
}
}
}
setState({ data: null, error: lastError, loading: false });
throw lastError;
}, [asyncFn, maxRetries, backoff]);
return { ...state, execute };
}
Version: 2.0.0 Last Updated: 2025-12-30 SASMP Version: 2.0.0 Difficulty: Intermediate Estimated Time: 2-3 weeks Prerequisites: React Fundamentals Changelog: Added retry patterns, test templates, and observability hooks