You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
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)
An Owner Stack is a string representing the components that are directly responsible for rendering a particular component. You can log Owner Stacks when debugging or use Owner Stacks to enhance error overlays or other development tools. Owner Stacks are only available in development builds. Component Stacks in production are unchanged.
An Owner Stack is a development-only stack trace that helps identify which components are responsible for rendering a particular component. An Owner Stack is distinct from a Component Stacks, which shows the hierarchy of components leading to an error.
Upgrade React to 19.2.4 across the repo for stability and RSC hardening, and update @types/react to keep types in sync. Changes cover the pnpm workspace catalog, the create-email template, and the Tailwind e2e Next.js fixture.
Dependencies
react: 19.0.0 → 19.2.4
react-dom: 19.0.0 → 19.2.4
@types/react: 19.2.13 → 19.2.14
Written for commit 8f9360a. Summary will update on new commits.
Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.
This PR includes no changesets
When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
![cubic-dev-ai[bot]](https://avatars.githubusercontent.com/in/1082092?s=60&v=4){kind=small}
This PR contains the following updates:
19.2.13→19.2.1419.0.0→19.2.419.0.0→19.2.4Release Notes
facebook/react (react)
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 APIsv19.1.5: 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
v19.1.0Compare Source
Owner Stack
An Owner Stack is a string representing the components that are directly responsible for rendering a particular component. You can log Owner Stacks when debugging or use Owner Stacks to enhance error overlays or other development tools. Owner Stacks are only available in development builds. Component Stacks in production are unchanged.
#32538, #32529, #32538
React
useIdto use valid CSS selectors, changing format from:r123:to«r123». #32001React DOM
hrefattribute is an empty string #31783getHoistableRoot()didn’t work properly when the container was a Document #32321<!-- -->) as a DOM container. #32250<script>and<template>tags to be nested within<select>tags. #31837use-sync-external-store
exportsfield topackage.jsonforuse-sync-external-storeto support various entrypoints. #25231React Server Components
unstable_prerender, a new experimental API for prerendering React Server Components on the server #31724registerServerReferencein client builds to handle server references in different environments. #32534v19.0.4: 19.0.4 (January 26th, 2026)Compare Source
React Server Components
v19.0.3: 19.0.3 (December 11th, 2025)Compare Source
React Server Components
v19.0.2: 19.0.2 (December 11th, 2025)Compare Source
React Server Components
v19.0.1: 19.0.1 (December 3rd, 2025)Compare Source
React Server Components
Configuration
📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).
🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.
♻ Rebasing: Never, or you tick the rebase/retry checkbox.
👻 Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.
This PR was generated by Mend Renovate. View the repository job log.
Summary by cubic
Upgrade React to 19.2.4 across the repo for stability and RSC hardening, and update
@types/reactto keep types in sync. Changes cover the pnpm workspace catalog, the create-email template, and the Tailwind e2e Next.js fixture.react: 19.0.0 → 19.2.4react-dom: 19.0.0 → 19.2.4@types/react: 19.2.13 → 19.2.14Written for commit 8f9360a. Summary will update on new commits.