react-knowledge-patch
React Knowledge Patch
Claude Opus 4.6 knows React through 18.x. It is unaware of the features below, which cover React 19.0 through 19.2 (released 2025-10-01).
Index
| Topic | Reference | Key features |
|---|---|---|
| Server rendering APIs | references/server-rendering.md | cacheSignal, prerender, resume, resumeAndPrerender, Partial Pre-rendering |
<Activity />
New component for pre-rendering and preserving state of hidden UI. Replaces conditional rendering with mode-based visibility.
// Instead of: {isVisible && <Page />}
<Activity mode={isVisible ? 'visible' : 'hidden'}>
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