Devpebe Radar — React

React — 2026-07

Fri, 31 Jul 2026 00:00:00 GMT

Sun, 31 May 2026 00:00:00 GMT

Type hardening and performance improvements across all three lines (19.1.7, 19.0.6).

Thu, 30 Apr 2026 00:00:00 GMT

⚠ Security-hardening patches on all three lines — “more cycle protections” (19.1.6, 19.0.5).

Sat, 31 Jan 2026 00:00:00 GMT

⚠ Security patches across all three release lines — more DoS mitigations for Server Actions and hardened Server Components. Worth updating even if you’re pinned to an older minor (19.1.5, 19.0.4).

Wed, 31 Dec 2025 00:00:00 GMT

Server Functions hardening: extra loop protection added — the same patch shipped across the 19.0.x and 19.1.x lines the same day.

Fri, 31 Oct 2025 00:00:00 GMT

<Activity> — hide and restore the UI and internal state of its children.
useEffectEvent — extract non-reactive logic into an Effect Event.
cacheSignal (RSC) signals when the cache lifetime is over.
React Performance tracks appear on the browser devtools Performance panel.
New resume / resumeAndPrerender APIs continue a prerender to a stream or HTML; prerender now returns a postponed state to feed them.
⚠ React DOM now batches Suspense boundary reveals, matching client-side rendering behavior.

Mon, 31 Mar 2025 00:00:00 GMT

Owner Stacks: a development-only stack trace showing which components rendered a component, via the new captureOwnerStack API.
Suspense boundaries usable anywhere — client, server, and during hydration — with improved hydration scheduling and boundary-retry GC pressure.
⚠ useId format changed from :r123: to «r123» (now valid CSS selectors).
Dev-only warning for null/undefined returned to useEffect, useInsertionEffect, and useLayoutEffect.