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Updated prerender APIs to return a postponed state that can be passed to the resume APIs.
Notable changes
React DOM now batches suspense boundary reveals, matching the behavior of client side rendering. This change is especially noticeable when animating the reveal of Suspense boundaries e.g. with the upcoming <ViewTransition> Component. React will batch as much reveals as possible before the first paint while trying to hit popular first-contentful paint metrics.
Add Node Web Streams (prerender, renderToReadableStream) to server-side-rendering APIs for Node.js
Use underscore instead of : IDs generated by useId
All Changes
React
<Activity /> was developed over many years, starting before ClassComponent.setState (@acdlite@sebmarkbage and many others)
Stringify context as "SomeContext" instead of "SomeContext.Provider" (@kassens#33507)
Include stack of cause of React instrumentation errors with %o placeholder (@eps1lon#34198)
Fix infinite useDeferredValue loop in popstate event (@acdlite#32821)
Fix a bug when an initial value was passed to useDeferredValue (@acdlite#34376)
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This PR contains the following updates:
19.1.0→19.2.719.1.0→19.2.7Release Notes
facebook/react (react)
v19.2.7: 19.2.7 (June 1st, 2026)Compare Source
React Server Components
FormDataentries in Server Actions which regressed in 19.2.6(#36566 by @unstubbable)
v19.2.6: 19.2.6 (May 6th, 2026)Compare Source
React Server Components
(by @eps1lon and @unstubbable)
v19.2.5: 19.2.5 (April 8th, 2026)Compare Source
React Server Components
v19.2.4: 19.2.4 (January 26th, 2026)Compare Source
React Server Components
v19.2.3: 19.2.3 (December 11th, 2025)Compare Source
React Server Components
v19.2.2: 19.2.2 (December 11th, 2025)Compare Source
React Server Components
react-server-dom-webpack/*.unbundledto privatereact-server-dom-unbundled(@eps1lon #35290)v19.2.1: 19.2.1 (December 3rd, 2025)Compare Source
React Server Components
v19.2.0Compare Source
Below is a list of all new features, APIs, and bug fixes.
Read the React 19.2 release post for more information.
New React Features
<Activity>: A new API to hide and restore the UI and internal state of its children.useEffectEventis a React Hook that lets you extract non-reactive logic into an Effect Event.cacheSignal(for RSCs) lets your know when thecache()lifetime is over.New React DOM Features
resume: to resume a prerender to a stream.resumeAndPrerender: to resume a prerender to HTML.resumeToPipeableStream: to resume a prerender to a stream.resumeAndPrerenderToNodeStream: to resume a prerender to HTML.prerenderAPIs to return apostponedstate that can be passed to theresumeAPIs.Notable changes
<ViewTransition>Component. React will batch as much reveals as possible before the first paint while trying to hit popular first-contentful paint metrics.prerender,renderToReadableStream) to server-side-rendering APIs for Node.js:IDs generated by useIdAll Changes
React
<Activity />was developed over many years, starting beforeClassComponent.setState(@acdlite @sebmarkbage and many others)%oplaceholder (@eps1lon #34198)useDeferredValueloop in popstate event (@acdlite #32821)useDeferredValue(@acdlite #34376)cacheSignal(@sebmarkbage #33557)React DOM
:for IDs generated byuseId(@sebmarkbage, @eps1lon: #32001, #33342#33099, #33422)nonceto be used on hoistable styles (@Andarist #32461)React.useinsideReact.lazy-ed Component (@hi-ogawa #33941)progressiveChunkSizeoption for server-side-rendering APIs (@sebmarkbage #33027)React Server Components
<img>and<link>using hints before they're rendered (@sebmarkbage #34604)filterStackFrame(@eps1lon #33707)React Reconciler
on*handlers to account for upcoming experimental APIsv19.1.8: 19.1.8 (June 1st, 2026)Compare Source
React Server Components
FormDataentries in Server Actions which regressed in 19.1.7(#36567 by @unstubbable)
v19.1.7: 19.1.7 (May 6th, 2026)Compare Source
React Server Components
(by @eps1lon and @unstubbable)
v19.1.6: 19.1.6 (April 8th, 2026)Compare Source
React Server Components
v19.1.5: 19.1.5 (January 26th, 2026)Compare Source
React Server Components
v19.1.4: 19.1.4 (December 11th, 2025)Compare Source
React Server Components
v19.1.3: 19.1.3 (December 11th, 2025)Compare Source
React Server Components
react-server-dom-webpack/*.unbundledto privatereact-server-dom-unbundled(@eps1lon #35290)v19.1.2: 19.1.2 (December 3rd, 2025)Compare Source
React Server Components
v19.1.1Compare Source
React
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