Sourced fromreact's releases.

19.2.0 (Oct 1, 2025)

Below is a list of all new features, APIs, and bug fixes.

Read theReact 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.
• useEffectEvent is a React Hook that lets you extract non-reactive logic into anEffect Event.
• cacheSignal (for RSCs) lets your know when thecache() lifetime is over.
• React Performance tracks appear on the Performance panel’s timeline in your browser developer tools

New React DOM Features

• Added resume APIs for partial pre-rendering with Web Streams:
  • resume: to resume a prerender to a stream.
  • resumeAndPrerender: to resume a prerender to HTML.
• Added resume APIs for partial pre-rendering with Node Streams:
  • resumeToPipeableStream: to resume a prerender to a stream.
  • resumeAndPrerenderToNodeStream: to resume a prerender to HTML.
• Updatedprerender APIs to return apostponed state that can be passed to theresume 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 beforeClassComponent.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 infiniteuseDeferredValue loop in popstate event (@​acdlite#32821)
• Fix a bug when an initial value was passed touseDeferredValue (@​acdlite#34376)
• Fix a crash when submitting forms with Client Actions (@​sebmarkbage#33055)
• Hide/unhide the content of dehydrated suspense boundaries if they resuspend (@​sebmarkbage#32900)
• Avoid stack overflow on wide trees during Hot Reload (@​sophiebits#34145)
• Improve Owner and Component stacks in various places (@​sebmarkbage,@​eps1lon:#33629,#33724,#32735,#33723)
• AddcacheSignal (@​sebmarkbage#33557)

React DOM

• Block on Suspensey Fonts during reveal of server-side-rendered content (@​sebmarkbage#33342)
• Use underscore instead of: for IDs generated byuseId (@​sebmarkbage,@​eps1lon:#32001,facebook/react#33342#33099,#33422)
• Stop warning when ARIA 1.3 attributes are used (@​Abdul-Omira#34264)
• Allownonce to be used on hoistable styles (@​Andarist#32461)
• Warn for using a React owned node as a Container if it also has text content (@​sebmarkbage#32774)

... (truncated)

Sourced fromreact's changelog.

19.2.0 (October 1st, 2025)

Below is a list of all new features, APIs, and bug fixes.

Read theReact 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.
• useEffectEvent is a React Hook that lets you extract non-reactive logic into anEffect Event.
• cacheSignal (for RSCs) lets your know when thecache() lifetime is over.
• React Performance tracks appear on the Performance panel’s timeline in your browser developer tools

New React DOM Features

• Added resume APIs for partial pre-rendering with Web Streams:
  • resume: to resume a prerender to a stream.
  • resumeAndPrerender: to resume a prerender to HTML.
• Added resume APIs for partial pre-rendering with Node Streams:
  • resumeToPipeableStream: to resume a prerender to a stream.
  • resumeAndPrerenderToNodeStream: to resume a prerender to HTML.
• Updatedprerender APIs to return apostponed state that can be passed to theresume 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 beforeClassComponent.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 infiniteuseDeferredValue loop in popstate event (@​acdlite#32821)
• Fix a bug when an initial value was passed touseDeferredValue (@​acdlite#34376)
• Fix a crash when submitting forms with Client Actions (@​sebmarkbage#33055)
• Hide/unhide the content of dehydrated suspense boundaries if they resuspend (@​sebmarkbage#32900)
• Avoid stack overflow on wide trees during Hot Reload (@​sophiebits#34145)
• Improve Owner and Component stacks in various places (@​sebmarkbage,@​eps1lon:#33629,#33724,#32735,#33723)
• AddcacheSignal (@​sebmarkbage#33557)

React DOM

• Block on Suspensey Fonts during reveal of server-side-rendered content (@​sebmarkbage#33342)
• Use underscore instead of: for IDs generated byuseId (@​sebmarkbage,@​eps1lon:#32001,facebook/react#33342#33099,#33422)
• Stop warning when ARIA 1.3 attributes are used (@​Abdul-Omira#34264)
• Allownonce to be used on hoistable styles (@​Andarist#32461)

... (truncated)

• 5667a41 Bump next prerelease version numbers (#34639)
• 8bb7241 Bump useEffectEvent to Canary (#34610)
• e3c9656 Ensure Performance Track are Clamped and Don't overlap (#34509)
• 68f00c9 Release Activity in Canary (#34374)
• 0e10ee9 [Reconciler] Set ProfileMode for Host Root Fiber by default in dev (#34432)
• 3bf8ab4 Add missing Activity export to development mode (#34439)
• 1549bda [Flight] Only assign_store in dev mode when creating lazy types (#34354)
• bb6f0c8 [Flight] Fix wrong missing key warning when static child is blocked (#34350)
• 05addfc Update Flow to 0.266 (#34271)
• ec5dd0a Update Flow to 0.257 (#34253)
• Additional commits viewable incompare view

• See full diff incompare view

Sourced fromreact-dom's releases.

19.2.0 (Oct 1, 2025)

Below is a list of all new features, APIs, and bug fixes.

Read theReact 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.
• useEffectEvent is a React Hook that lets you extract non-reactive logic into anEffect Event.
• cacheSignal (for RSCs) lets your know when thecache() lifetime is over.
• React Performance tracks appear on the Performance panel’s timeline in your browser developer tools

New React DOM Features

• Added resume APIs for partial pre-rendering with Web Streams:
  • resume: to resume a prerender to a stream.
  • resumeAndPrerender: to resume a prerender to HTML.
• Added resume APIs for partial pre-rendering with Node Streams:
  • resumeToPipeableStream: to resume a prerender to a stream.
  • resumeAndPrerenderToNodeStream: to resume a prerender to HTML.
• Updatedprerender APIs to return apostponed state that can be passed to theresume 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 beforeClassComponent.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 infiniteuseDeferredValue loop in popstate event (@​acdlite#32821)
• Fix a bug when an initial value was passed touseDeferredValue (@​acdlite#34376)
• Fix a crash when submitting forms with Client Actions (@​sebmarkbage#33055)
• Hide/unhide the content of dehydrated suspense boundaries if they resuspend (@​sebmarkbage#32900)
• Avoid stack overflow on wide trees during Hot Reload (@​sophiebits#34145)
• Improve Owner and Component stacks in various places (@​sebmarkbage,@​eps1lon:#33629,#33724,#32735,#33723)
• AddcacheSignal (@​sebmarkbage#33557)

React DOM

• Block on Suspensey Fonts during reveal of server-side-rendered content (@​sebmarkbage#33342)
• Use underscore instead of: for IDs generated byuseId (@​sebmarkbage,@​eps1lon:#32001,facebook/react#33342#33099,#33422)
• Stop warning when ARIA 1.3 attributes are used (@​Abdul-Omira#34264)
• Allownonce to be used on hoistable styles (@​Andarist#32461)
• Warn for using a React owned node as a Container if it also has text content (@​sebmarkbage#32774)

... (truncated)

Sourced fromreact-dom's changelog.

19.2.0 (October 1st, 2025)

Below is a list of all new features, APIs, and bug fixes.

Read theReact 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.
• useEffectEvent is a React Hook that lets you extract non-reactive logic into anEffect Event.
• cacheSignal (for RSCs) lets your know when thecache() lifetime is over.
• React Performance tracks appear on the Performance panel’s timeline in your browser developer tools

New React DOM Features

• Added resume APIs for partial pre-rendering with Web Streams:
  • resume: to resume a prerender to a stream.
  • resumeAndPrerender: to resume a prerender to HTML.
• Added resume APIs for partial pre-rendering with Node Streams:
  • resumeToPipeableStream: to resume a prerender to a stream.
  • resumeAndPrerenderToNodeStream: to resume a prerender to HTML.
• Updatedprerender APIs to return apostponed state that can be passed to theresume 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 beforeClassComponent.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 infiniteuseDeferredValue loop in popstate event (@​acdlite#32821)
• Fix a bug when an initial value was passed touseDeferredValue (@​acdlite#34376)
• Fix a crash when submitting forms with Client Actions (@​sebmarkbage#33055)
• Hide/unhide the content of dehydrated suspense boundaries if they resuspend (@​sebmarkbage#32900)
• Avoid stack overflow on wide trees during Hot Reload (@​sophiebits#34145)
• Improve Owner and Component stacks in various places (@​sebmarkbage,@​eps1lon:#33629,#33724,#32735,#33723)
• AddcacheSignal (@​sebmarkbage#33557)

React DOM

• Block on Suspensey Fonts during reveal of server-side-rendered content (@​sebmarkbage#33342)
• Use underscore instead of: for IDs generated byuseId (@​sebmarkbage,@​eps1lon:#32001,facebook/react#33342#33099,#33422)
• Stop warning when ARIA 1.3 attributes are used (@​Abdul-Omira#34264)
• Allownonce to be used on hoistable styles (@​Andarist#32461)

... (truncated)

• 8618113 Bump scheduler version (#34671)
• 1bd1f01 Ship partial-prerendering APIs to Canary (#34633)
• 2f0649a [Fizz] Removenonce option from resume-and-prerender APIs (#34664)
• 5667a41 Bump next prerelease version numbers (#34639)
• e08f53b Matchreact-dom/static test entrypoints and published entrypoints (#34599)
• 8bb7241 Bump useEffectEvent to Canary (#34610)
• 83c88ad Handle fabric root level fragment with compareDocumentPosition (#34533)
• 68f00c9 Release Activity in Canary (#34374)
• 3168e08 [flags] enable opt-in for enableDefaultTransitionIndicator (#34373)
• 3434ff4 Add scrollIntoView to fragment instances (#32814)
• Additional commits viewable incompare view

• See full diff incompare view

• See full diff incompare view

• See full diff incompare view

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