React / update detail

16.9.0 (August 8, 2019)

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React·7 years ago · Aug 8, 2019, 09:14 PMDeprecationMay break your integrationAI-assisted summary

Summary

Add <React.Profiler> API and several DevTools capabilities (editing useState, toggling Suspense, async act support, nested act warnings).
Deprecate unstable ConcurrentMode, UNSAFE lifecycle method names, javascript: URLs, and factory component pattern for security and future consistency.
Fix memory leaks, crashes, warning message issues, and improve hydration and server‑side CSS handling.

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