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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)
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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changed the title
Update react monorepo to v19.2.17
Update react monorepo
Jul 24, 2026
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This PR contains the following updates:
19.0.12→19.2.1819.0.4→19.2.419.1.0→19.2.819.1.0→19.2.8Release Notes
react/react (react)
v19.2.8Compare Source
v19.2.7Compare Source
React Server Components
FormDataentries in Server Actions which regressed in 19.2.6 (@unstubbable #36566)v19.2.6Compare Source
React Server Components
v19.2.5Compare Source
React Server Components
v19.2.4Compare Source
React Server Components
v19.2.3Compare Source
React Server Components
v19.2.2Compare Source
React Server Components
react-server-dom-webpack/*.unbundledto privatereact-server-dom-unbundled(@eps1lon #35290)v19.2.1Compare 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, facebook#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 APIsv19.1.9Compare Source
v19.1.8Compare Source
React Server Components
FormDataentries in Server Actions which regressed in 19.1.7 (@unstubbable #36567)v19.1.7Compare Source
React Server Components
v19.1.6Compare Source
React Server Components
v19.1.5Compare Source
React Server Components
v19.1.4Compare Source
React Server Components
v19.1.3Compare Source
React Server Components
react-server-dom-webpack/*.unbundledto privatereact-server-dom-unbundled(@eps1lon #35290)v19.1.2Compare Source
React Server Components
v19.1.1Compare Source
React
react/react (react-dom)
v19.2.8Compare Source
v19.2.7Compare Source
React Server Components
FormDataentries in Server Actions which regressed in 19.2.6 (@unstubbable #36566)v19.2.6Compare Source
React Server Components
v19.2.5Compare Source
React Server Components
v19.2.4Compare Source
React Server Components
v19.2.3Compare Source
React Server Components
v19.2.2Compare Source
React Server Components
react-server-dom-webpack/*.unbundledto privatereact-server-dom-unbundled(@eps1lon #35290)v19.2.1Compare 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, facebook#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 APIsv19.1.9Compare Source
v19.1.8Compare Source
React Server Components
FormDataentries in Server Actions which regressed in 19.1.7 (@unstubbable #36567)v19.1.7Compare Source
React Server Components
v19.1.6Compare Source
React Server Components
v19.1.5Compare Source
React Server Components
v19.1.4Compare Source
React Server Components
v19.1.3Compare Source
React Server Components
react-server-dom-webpack/*.unbundledto privatereact-server-dom-unbundled(@eps1lon #35290)v19.1.2Compare Source
React Server Components
v19.1.1Compare Source
React
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