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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)
ERROR Failed to switch pnpm to v10.16.0. Looks like pnpm CLI is missing at "/home/ubuntu/.local/share/pnpm/.tools/pnpm/10.16.0/bin" or is incorrect
spawnSync /home/ubuntu/.local/share/pnpm/.tools/pnpm/10.16.0/bin/pnpm ENOENT
Comparing renovate/react-19.x (0b9f56b) with main (ec64d52)
🎉 Hooray! codspeed-rust just leveled up to 2.7.2!
A heads-up, this is a breaking change and it might affect your current performance baseline a bit. But here's the exciting part - it's packed with new, cool features and promises improved result stability 🥳! Curious about what's new? Visit our releases page to delve into all the awesome details about this new version.
dependenciesPull requests that update a dependency file
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This PR contains the following updates:
^19.1.1->^19.2.0^19.1.0->^19.2.0^19.1.13->^19.2.2Warning
Some dependencies could not be looked up. Check the Dependency Dashboard for more information.
Release Notes
facebook/react (react)
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 APIsConfiguration
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