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이름만 다른(표기 변형) [[위키링크]]를 대상 문서의 canonical 제목으로 치환해 끊겼던 1,200개 링크를 연결. 제목/파일명 정규화 일치만 적용하고 별칭 매칭은 과병합 위험으로 제외(애매성 가드). 원본은 _link_reconcile_backup/ 에 백업. 도구: Datacollect/scripts/link_reconcile_apply.mjs Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
6.3 KiB
6.3 KiB
id, title, category, status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, verification_status, tags, raw_sources, last_reinforced, github_commit, tech_stack
| id | title | category | status | canonical_id | aliases | duplicate_of | source_trust_level | confidence_score | verification_status | tags | raw_sources | last_reinforced | github_commit | tech_stack | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| wiki-2026-0508-render-props | Render Props | 10_Wiki/Topics | verified | self |
|
none | A | 0.88 | applied |
|
2026-05-10 | pending |
|
Render Props
매 한 줄
"매 component 가 prop 으로 받은 function 을 호출해 무엇을 render 할지 결정". Michael Jackson 이 popularize 한 React 합성 패턴 (2017). 2018 Hooks 등장 후 매 logic-sharing 용도는 대부분 custom hook 으로 대체되었지만, 매 render-time data injection (animation, virtualization, headless UI) 에서는 매 2026 까지도 first-class 도구.
매 핵심
매 정의
- 매 component 가 호출자에게 어떻게 render 할지 의 control 을 위임.
- Function-typed prop (
children또는render) 이 state/computation 을 인자로 받아 ReactNode 반환. - 매 inversion of control — provider 는 logic, consumer 는 view.
매 Hooks 와 의 관계
- 매 logic reuse 의 90%: custom hook 이 우월 (no nesting, easier types).
- 매 render-time slot 패턴: render props 가 여전히 적합 — Framer Motion, react-virtual, Radix UI 등.
- 매 headless UI (Headless UI, Radix, Ariakit) 는 render props + compound component 혼합.
매 응용
- Animation: Framer Motion
<AnimatePresence>children function. - Virtualization: TanStack Virtual
<Virtualizer>row renderer. - Form: react-hook-form
<Controller render={...}>. - Headless: Headless UI
<Menu.Item>{({active}) => ...}</Menu.Item>.
💻 패턴
Basic render prop
type MouseTrackerProps = {
render: (state: { x: number; y: number }) => React.ReactNode;
};
function MouseTracker({ render }: MouseTrackerProps) {
const [pos, setPos] = useState({ x: 0, y: 0 });
return (
<div onMouseMove={(e) => setPos({ x: e.clientX, y: e.clientY })}>
{render(pos)}
</div>
);
}
// usage
<MouseTracker render={({ x, y }) => <p>{x}, {y}</p>} />
Children as function (FaCC)
type Props = { children: (state: { x: number; y: number }) => React.ReactNode };
function MouseTracker({ children }: Props) {
const [pos, setPos] = useState({ x: 0, y: 0 });
return <div onMouseMove={(e) => setPos({ x: e.clientX, y: e.clientY })}>{children(pos)}</div>;
}
<MouseTracker>{({ x, y }) => <p>{x}, {y}</p>}</MouseTracker>
TanStack Virtual (real-world 2026)
import { useVirtualizer } from '@tanstack/react-virtual';
function List({ items }: { items: string[] }) {
const ref = useRef<HTMLDivElement>(null);
const v = useVirtualizer({
count: items.length,
getScrollElement: () => ref.current,
estimateSize: () => 32,
});
return (
<div ref={ref} style={{ height: 400, overflow: 'auto' }}>
<div style={{ height: v.getTotalSize() }}>
{v.getVirtualItems().map((vi) => (
<div key={vi.key} style={{ transform: `translateY(${vi.start}px)` }}>
{items[vi.index]}
</div>
))}
</div>
</div>
);
}
react-hook-form Controller
import { Controller, useForm } from 'react-hook-form';
function Form() {
const { control } = useForm<{ name: string }>();
return (
<Controller
control={control}
name="name"
render={({ field, fieldState }) => (
<input {...field} aria-invalid={!!fieldState.error} />
)}
/>
);
}
Headless UI Menu (compound + render prop)
import { Menu } from '@headlessui/react';
<Menu>
<Menu.Button>Options</Menu.Button>
<Menu.Items>
<Menu.Item>
{({ active }) => (
<a className={active ? 'bg-blue-500' : ''} href="/edit">Edit</a>
)}
</Menu.Item>
</Menu.Items>
</Menu>
Generic render prop with typed slot
function DataLoader<T>({
url,
children,
}: {
url: string;
children: (s: { data: T | null; loading: boolean; error: Error | null }) => React.ReactNode;
}) {
const [data, setData] = useState<T | null>(null);
const [loading, setLoading] = useState(true);
const [error, setError] = useState<Error | null>(null);
useEffect(() => {
fetch(url).then(r => r.json()).then(setData).catch(setError).finally(() => setLoading(false));
}, [url]);
return <>{children({ data, loading, error })}</>;
}
Hook equivalent (when to prefer)
function useMouse() {
const [pos, setPos] = useState({ x: 0, y: 0 });
const onMouseMove = (e: React.MouseEvent) => setPos({ x: e.clientX, y: e.clientY });
return { pos, onMouseMove };
}
function MyView() {
const { pos, onMouseMove } = useMouse();
return <div onMouseMove={onMouseMove}>{pos.x},{pos.y}</div>;
}
매 결정 기준
| 상황 | Approach |
|---|---|
| Logic 만 공유 | Custom hook (default since 2019) |
| DOM/JSX slot 주입 필요 | Render props |
| Generic library (virtualizer, animator) | Render props |
| Headless UI primitive | Render props + compound |
| Class component legacy | Render props (hook 불가) |
기본값: 매 hook 우선, 매 render slot 이 진짜 필요할 때만 render props.
🔗 Graph
- 부모: React Patterns · Component Composition (React)
- 변형: Custom Hooks · Component-Composition
- 응용: Headless UI · react-hook-form
- Adjacent: Inversion of Control · Slot Pattern
🤖 LLM 활용
언제: 매 library API 설계, 매 generic data-injection slot, 매 animation choreography. 언제 X: 매 단순 logic share — hook 으로 충분. 매 callback hell 위험.
❌ 안티패턴
- Render prop hell: 매 nesting 5단계 — flatten 또는 hook.
- Inline function in render: 매 매 render 마다 새 function — child memoization 깨짐,
useCallback또는 module-scope. - Both
childrenandrender: 매 ambiguous API — 하나만. - Hook 으로 충분한데 render prop: 매 over-engineering.
- Type any: 매 generic slot 의 type erasure —
<T,>generic 사용.
🧪 검증 / 중복
- Verified: React docs (legacy section), TanStack Virtual, react-hook-form, Headless UI 공식 docs (2026).
- 신뢰도 A.
🕓 Changelog
| 날짜 | 변경 |
|---|---|
| 2026-05-08 | Phase 1 |
| 2026-05-10 | Manual cleanup — render props vs hooks, real-world 2026 examples |