From 6a35e13d5e2a50b9a3b55c9c072cb8ca1679573a Mon Sep 17 00:00:00 2001 From: Sophie Alpert Date: Mon, 2 Dec 2024 14:13:32 -0800 Subject: [PATCH 01/41] Update react-19-upgrade-guide.md --- src/content/blog/2024/04/25/react-19-upgrade-guide.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/content/blog/2024/04/25/react-19-upgrade-guide.md b/src/content/blog/2024/04/25/react-19-upgrade-guide.md index e6d76ec7..3318676b 100644 --- a/src/content/blog/2024/04/25/react-19-upgrade-guide.md +++ b/src/content/blog/2024/04/25/react-19-upgrade-guide.md @@ -735,7 +735,7 @@ const reducer = (state: State, action: Action) => state; ### Other breaking changes {/*other-breaking-changes*/} -- **react-dom**: Error for javascript URLs in src/href [#26507](https://github.com/facebook/react/pull/26507) +- **react-dom**: Error for javascript URLs in `src` and `href` [#26507](https://github.com/facebook/react/pull/26507) - **react-dom**: Remove `errorInfo.digest` from `onRecoverableError` [#28222](https://github.com/facebook/react/pull/28222) - **react-dom**: Remove `unstable_flushControlled` [#26397](https://github.com/facebook/react/pull/26397) - **react-dom**: Remove `unstable_createEventHandle` [#28271](https://github.com/facebook/react/pull/28271) From 4bae717f59787b4c741f600ee2d2decb07fba226 Mon Sep 17 00:00:00 2001 From: Sophie Alpert Date: Mon, 2 Dec 2024 14:13:55 -0800 Subject: [PATCH 02/41] Fix typo in react-19-upgrade-guide.md --- src/content/blog/2024/04/25/react-19-upgrade-guide.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/content/blog/2024/04/25/react-19-upgrade-guide.md b/src/content/blog/2024/04/25/react-19-upgrade-guide.md index 3318676b..68ef9420 100644 --- a/src/content/blog/2024/04/25/react-19-upgrade-guide.md +++ b/src/content/blog/2024/04/25/react-19-upgrade-guide.md @@ -740,7 +740,7 @@ const reducer = (state: State, action: Action) => state; - **react-dom**: Remove `unstable_flushControlled` [#26397](https://github.com/facebook/react/pull/26397) - **react-dom**: Remove `unstable_createEventHandle` [#28271](https://github.com/facebook/react/pull/28271) - **react-dom**: Remove `unstable_renderSubtreeIntoContainer` [#28271](https://github.com/facebook/react/pull/28271) -- **react-dom**: Remove `unstable_runWithPrioirty` [#28271](https://github.com/facebook/react/pull/28271) +- **react-dom**: Remove `unstable_runWithPriority` [#28271](https://github.com/facebook/react/pull/28271) - **react-is**: Remove deprecated methods from `react-is` [28224](https://github.com/facebook/react/pull/28224) ### Other notable changes {/*other-notable-changes*/} From fd8b1e02b4fa9ecee6ba9f710976cb0cfbdb8a61 Mon Sep 17 00:00:00 2001 From: Ricky Date: Thu, 5 Dec 2024 13:53:26 -0500 Subject: [PATCH 03/41] Update React v19 blog post for stable release (#7321) * React v19 blog update * re-add sebbie's install updates Co-authored-by: Sebastian Silbermann --------- Co-authored-by: Sebastian Silbermann --- .../blog/2024/04/25/react-19-upgrade-guide.md | 31 ++++++++----------- .../blog/2024/05/22/react-conf-2024-recap.md | 4 +-- .../blog/2024/{04/25 => 12/05}/react-19.md | 27 +++++++++++----- src/content/blog/index.md | 14 ++++----- vercel.json | 5 +++ 5 files changed, 46 insertions(+), 35 deletions(-) rename src/content/blog/2024/{04/25 => 12/05}/react-19.md (96%) diff --git a/src/content/blog/2024/04/25/react-19-upgrade-guide.md b/src/content/blog/2024/04/25/react-19-upgrade-guide.md index 68ef9420..79af8d34 100644 --- a/src/content/blog/2024/04/25/react-19-upgrade-guide.md +++ b/src/content/blog/2024/04/25/react-19-upgrade-guide.md @@ -1,5 +1,5 @@ --- -title: "React 19 RC Upgrade Guide" +title: "React 19 Upgrade Guide" author: Ricky Hanlon date: 2024/04/25 description: The improvements added to React 19 require some breaking changes, but we've worked to make the upgrade as smooth as possible and we don't expect the changes to impact most apps. In this post, we will guide you through the steps for upgrading apps and libraries to React 19. @@ -12,7 +12,7 @@ April 25, 2024 by [Ricky Hanlon](https://twitter.com/rickhanlonii) -The improvements added to React 19 RC require some breaking changes, but we've worked to make the upgrade as smooth as possible, and we don't expect the changes to impact most apps. +The improvements added to React 19 require some breaking changes, but we've worked to make the upgrade as smooth as possible, and we don't expect the changes to impact most apps. @@ -38,7 +38,7 @@ In this post, we will guide you through the steps for upgrading to React 19: - [TypeScript changes](#typescript-changes) - [Changelog](#changelog) -If you'd like to help us test React 19, follow the steps in this upgrade guide and [report any issues](https://github.com/facebook/react/issues/new?assignees=&labels=React+19&projects=&template=19.md&title=%5BReact+19%5D) you encounter. For a list of new features added to React 19, see the [React 19 release post](/blog/2024/04/25/react-19). +If you'd like to help us test React 19, follow the steps in this upgrade guide and [report any issues](https://github.com/facebook/react/issues/new?assignees=&labels=React+19&projects=&template=19.md&title=%5BReact+19%5D) you encounter. For a list of new features added to React 19, see the [React 19 release post](/blog/2024/12/05/react-19). --- ## Installing {/*installing*/} @@ -70,28 +70,23 @@ We expect most apps will not be affected since the transform is enabled in most To install the latest version of React and React DOM: ```bash -npm install --save-exact react@rc react-dom@rc +npm install --save-exact react@^19.0.0 react-dom@^19.0.0 ``` Or, if you're using Yarn: ```bash -yarn add --exact react@rc react-dom@rc +yarn add --exact react@^19.0.0 react-dom@^19.0.0 ``` -If you're using TypeScript, you also need to update the types. Once React 19 is released as stable, you can install the types as usual from `@types/react` and `@types/react-dom`. Until the stable release, the types are available in different packages which need to be enforced in your `package.json`: +If you're using TypeScript, you also need to update the types. +```bash +npm install --save-exact @types/react@^19.0.0 react-dom@^19.0.0 +``` -```json -{ - "dependencies": { - "@types/react": "npm:types-react@rc", - "@types/react-dom": "npm:types-react-dom@rc" - }, - "overrides": { - "@types/react": "npm:types-react@rc", - "@types/react-dom": "npm:types-react-dom@rc" - } -} +Or, if you're using Yarn: +```bash +yarn add --exact @†ypes/react@^19.0.0 @†ypes/react-dom@^19.0.0 ``` We're also including a codemod for the most common replacements. See [TypeScript changes](#typescript-changes) below. @@ -752,7 +747,7 @@ const reducer = (state: State, action: Action) => state; - **react-dom**: Remove layout effect warning during SSR [#26395](https://github.com/facebook/react/pull/26395) - **react-dom**: Warn and don’t set empty string for src/href (except anchor tags) [#28124](https://github.com/facebook/react/pull/28124) -We'll publish the full changelog with the stable release of React 19. +For a full list of changes, please see the [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md#1900-december-5-2024). --- diff --git a/src/content/blog/2024/05/22/react-conf-2024-recap.md b/src/content/blog/2024/05/22/react-conf-2024-recap.md index 96417fd8..bc77f4bb 100644 --- a/src/content/blog/2024/05/22/react-conf-2024-recap.md +++ b/src/content/blog/2024/05/22/react-conf-2024-recap.md @@ -17,7 +17,7 @@ Last week we hosted React Conf 2024, a two-day conference in Henderson, Nevada w --- -At React Conf 2024, we announced the [React 19 RC](/blog/2024/04/25/react-19), the [React Native New Architecture Beta](https://github.com/reactwg/react-native-new-architecture/discussions/189), and an experimental release of the [React Compiler](/learn/react-compiler). The community also took the stage to announce [React Router v7](https://remix.run/blog/merging-remix-and-react-router), [Universal Server Components](https://www.youtube.com/watch?v=T8TZQ6k4SLE&t=20765s) in Expo Router, React Server Components in [RedwoodJS](https://redwoodjs.com/blog/rsc-now-in-redwoodjs), and much more. +At React Conf 2024, we announced the [React 19 RC](/blog/2024/12/05/react-19), the [React Native New Architecture Beta](https://github.com/reactwg/react-native-new-architecture/discussions/189), and an experimental release of the [React Compiler](/learn/react-compiler). The community also took the stage to announce [React Router v7](https://remix.run/blog/merging-remix-and-react-router), [Universal Server Components](https://www.youtube.com/watch?v=T8TZQ6k4SLE&t=20765s) in Expo Router, React Server Components in [RedwoodJS](https://redwoodjs.com/blog/rsc-now-in-redwoodjs), and much more. The entire [day 1](https://www.youtube.com/watch?v=T8TZQ6k4SLE) and [day 2](https://www.youtube.com/watch?v=0ckOUBiuxVY) streams are available online. In this post, we'll summarize the talks and announcements from the event. @@ -36,7 +36,7 @@ For more, check out these talks from the community later in the conference: - [RedwoodJS, now with React Server Components](https://www.youtube.com/watch?v=T8TZQ6k4SLE&t=26815s) by [Amy Dutton](https://twitter.com/selfteachme) - [Introducing Universal React Server Components in Expo Router](https://www.youtube.com/watch?v=T8TZQ6k4SLE&t=20765s) by [Evan Bacon](https://twitter.com/Baconbrix) -Next in the keynote, [Josh Story](https://twitter.com/joshcstory) and [Andrew Clark](https://twitter.com/acdlite) shared new features coming in React 19, and announced the React 19 RC which is ready for testing in production. Check out all the features in the [React 19 release post](/blog/2024/04/25/react-19), and see these talks for deep dives on the new features: +Next in the keynote, [Josh Story](https://twitter.com/joshcstory) and [Andrew Clark](https://twitter.com/acdlite) shared new features coming in React 19, and announced the React 19 RC which is ready for testing in production. Check out all the features in the [React 19 release post](/blog/2024/12/05/react-19), and see these talks for deep dives on the new features: - [What's new in React 19](https://www.youtube.com/watch?v=T8TZQ6k4SLE&t=8880s) by [Lydia Hallie](https://twitter.com/lydiahallie) - [React Unpacked: A Roadmap to React 19](https://www.youtube.com/watch?v=T8TZQ6k4SLE&t=10112s) by [Sam Selikoff](https://twitter.com/samselikoff) diff --git a/src/content/blog/2024/04/25/react-19.md b/src/content/blog/2024/12/05/react-19.md similarity index 96% rename from src/content/blog/2024/04/25/react-19.md rename to src/content/blog/2024/12/05/react-19.md index 1b19c354..afe5812c 100644 --- a/src/content/blog/2024/04/25/react-19.md +++ b/src/content/blog/2024/12/05/react-19.md @@ -1,21 +1,33 @@ --- -title: "React 19 RC" +title: "React v19" author: The React Team -date: 2024/04/25 -description: React 19 RC is now available on npm! In this post, we'll give an overview of the new features in React 19, and how you can adopt them. +date: 2024/12/05 +description: React 19 is now available on npm! In this post, we'll give an overview of the new features in React 19, and how you can adopt them. --- -April 25, 2024 by [The React Team](/community/team) +December 05, 2024 by [The React Team](/community/team) --- + + +### React 19 is now stable! {/*react-19-is-now-stable*/} + +Additions since this post was originally shared with the React 19 RC in April: + +- **Pre-warming for suspended trees**: see [Improvements to Suspense](/blog/2024/04/25/react-19-upgrade-guide#improvements-to-suspense). +- **React DOM static APIs**: see [New React DOM Static APIs](#new-react-dom-static-apis). + +_The date for this post has been update to reflect the stable release date._ + + -React 19 RC is now available on npm! +React v19 is now available on npm! -In our [React 19 RC Upgrade Guide](/blog/2024/04/25/react-19-upgrade-guide), we shared step-by-step instructions for upgrading your app to React 19. In this post, we'll give an overview of the new features in React 19, and how you can adopt them. +In our [React 19 Upgrade Guide](/blog/2024/04/25/react-19-upgrade-guide), we shared step-by-step instructions for upgrading your app to React 19. In this post, we'll give an overview of the new features in React 19, and how you can adopt them. - [What's new in React 19](#whats-new-in-react-19) - [Improvements in React 19](#improvements-in-react-19) @@ -771,5 +783,4 @@ Thanks to [Joey Arhar](https://github.com/josepharhar) for driving the design an #### How to upgrade {/*how-to-upgrade*/} See the [React 19 Upgrade Guide](/blog/2024/04/25/react-19-upgrade-guide) for step-by-step instructions and a full list of breaking and notable changes. - - +_Note: this post was originally published 04/25/2024 and has been updated to 12/05/2024 with the stable release._ \ No newline at end of file diff --git a/src/content/blog/index.md b/src/content/blog/index.md index e37631e8..cc50b83c 100644 --- a/src/content/blog/index.md +++ b/src/content/blog/index.md @@ -10,25 +10,25 @@ This blog is the official source for the updates from the React team. Anything i
- + -We announced an experimental release of React Compiler at React Conf 2024. We've made a lot of progress since then, and in this post we want to share what's next for React Compiler ... +In the React 19 Upgrade Guide, we shared step-by-step instructions for upgrading your app to React 19. In this post, we'll give an overview of the new features in React 19, and how you can adopt them ... - + -Last week we hosted React Conf 2024, a two-day conference in Henderson, Nevada where 700+ attendees gathered in-person to discuss the latest in UI engineering. This was our first in-person conference since 2019, and we were thrilled to be able to bring the community together again ... +We announced an experimental release of React Compiler at React Conf 2024. We've made a lot of progress since then, and in this post we want to share what's next for React Compiler ... - + -In the React 19 RC Upgrade Guide, we shared step-by-step instructions for upgrading your app to React 19. In this post, we'll give an overview of the new features in React 19, and how you can adopt them ... +Last week we hosted React Conf 2024, a two-day conference in Henderson, Nevada where 700+ attendees gathered in-person to discuss the latest in UI engineering. This was our first in-person conference since 2019, and we were thrilled to be able to bring the community together again ... - + The improvements added to React 19 require some breaking changes, but we've worked to make the upgrade as smooth as possible, and we don't expect the changes to impact most apps. In this post, we will guide you through the steps for upgrading libraries to React 19 ... diff --git a/vercel.json b/vercel.json index 8b0546e3..0de6c47e 100644 --- a/vercel.json +++ b/vercel.json @@ -184,6 +184,11 @@ "destination": "/reference/rsc/use-server", "permanent": true }, + { + "source": "/blog/2024/04/25/react-19", + "destination": "/blog/2024/12/05/react-19", + "permanent": true + }, { "source": "/feed.xml", "destination": "/rss.xml", From 4673a050e126289c0ee20f147313326b8fec5e8d Mon Sep 17 00:00:00 2001 From: Ricky Date: Thu, 5 Dec 2024 14:03:22 -0500 Subject: [PATCH 04/41] Merge v19 docs to main (#7322) * Convert "Canary" callouts to "React 19 beta" (#6811) * Convert "Canary" callouts to "React 19 beta" * Starting in * Bump version string * Bump deploy * Bump deploy * Bump deploy * [19] Remove callouts (#6844) * Remove callouts * rm if(node) * Delete removed APIs from 19 docs (#6845) * Add information about ref handling in strict mode (#6777) * Add information about DOM ref handling in strict mode * switch order of ref object / ref callback in strictmode doc * use 'refs to components' terminology instead of 'DOM refs' * update references to canary/r19 * Expand usage example and remove badges --------- Co-authored-by: Rick Hanlon * [19] s/"Server Action"/"Server Function" (#7180) * [19] s/Server Action/Server Function * Revert /blog and change redirect * Add note * Tweak note * [v19] Update sandboxes to 19 RC (#7196) * Update transition docs for React 19 (#6837) * Add async transitions to React 19 docs * Updates from feedback * tweaks * grammar * Add startTranstion API * Apply suggestions from code review Co-authored-by: Noah Lemen * Updated * capitalization * grammar --------- Co-authored-by: Noah Lemen * [19] Add docs for prerender APIs (#7320) * Add prerender APIs * fix code blocks --------- Co-authored-by: Noah Lemen --- src/components/Icon/IconRocket.tsx | 32 + src/components/Layout/Sidebar/SidebarLink.tsx | 15 +- .../Layout/Sidebar/SidebarRouteTree.tsx | 6 +- src/components/Layout/getRouteMeta.tsx | 4 +- src/components/MDX/ExpandableCallout.tsx | 34 +- src/components/MDX/MDXComponents.tsx | 32 + src/components/MDX/Sandpack/template.ts | 4 +- src/content/blog/2024/12/05/react-19.md | 24 + .../learn/manipulating-the-dom-with-refs.md | 50 +- .../reference/react-dom/client/createRoot.md | 35 +- .../reference/react-dom/client/hydrateRoot.md | 35 +- .../reference/react-dom/components/common.md | 34 +- .../reference/react-dom/components/form.md | 86 +- .../reference/react-dom/components/input.md | 8 +- .../reference/react-dom/components/link.md | 7 - .../reference/react-dom/components/meta.md | 8 - .../reference/react-dom/components/script.md | 7 - .../reference/react-dom/components/style.md | 7 - .../reference/react-dom/components/title.md | 8 - .../reference/react-dom/findDOMNode.md | 435 ------- .../reference/react-dom/hooks/index.md | 6 - .../react-dom/hooks/useFormStatus.md | 29 - src/content/reference/react-dom/hydrate.md | 201 ---- src/content/reference/react-dom/index.md | 19 +- src/content/reference/react-dom/preconnect.md | 7 - .../reference/react-dom/prefetchDNS.md | 7 - src/content/reference/react-dom/preinit.md | 7 - .../reference/react-dom/preinitModule.md | 7 - src/content/reference/react-dom/preload.md | 7 - .../reference/react-dom/preloadModule.md | 7 - src/content/reference/react-dom/render.md | 218 ---- .../reference/react-dom/server/index.md | 17 +- .../react-dom/server/renderToNodeStream.md | 79 -- .../server/renderToStaticNodeStream.md | 83 -- .../react-dom/server/renderToString.md | 19 +- .../reference/react-dom/static/index.md | 28 + .../reference/react-dom/static/prerender.md | 297 +++++ .../react-dom/static/prerenderToNodeStream.md | 295 +++++ .../react-dom/unmountComponentAtNode.md | 113 -- src/content/reference/react/Component.md | 82 +- src/content/reference/react/StrictMode.md | 418 ++++++- src/content/reference/react/Suspense.md | 574 +-------- src/content/reference/react/cache.md | 8 +- src/content/reference/react/createElement.md | 2 +- src/content/reference/react/createFactory.md | 231 ---- .../react/experimental_taintUniqueValue.md | 2 +- src/content/reference/react/forwardRef.md | 8 + src/content/reference/react/legacy.md | 17 +- .../reference/react/startTransition.md | 14 +- src/content/reference/react/use.md | 49 +- src/content/reference/react/useActionState.md | 52 +- .../reference/react/useDeferredValue.md | 163 +-- src/content/reference/react/useOptimistic.md | 19 - src/content/reference/react/useTransition.md | 1038 ++++++++++------- src/content/reference/rsc/directives.md | 9 +- src/content/reference/rsc/server-actions.md | 213 ---- .../reference/rsc/server-components.md | 11 +- src/content/reference/rsc/server-functions.md | 222 ++++ src/content/reference/rsc/use-client.md | 10 +- src/content/reference/rsc/use-server.md | 56 +- src/content/warnings/react-dom-test-utils.md | 2 + src/content/warnings/react-test-renderer.md | 4 +- src/sidebarReference.json | 121 +- src/siteConfig.js | 3 +- vercel.json | 42 +- 65 files changed, 2319 insertions(+), 3368 deletions(-) create mode 100644 src/components/Icon/IconRocket.tsx delete mode 100644 src/content/reference/react-dom/findDOMNode.md delete mode 100644 src/content/reference/react-dom/hydrate.md delete mode 100644 src/content/reference/react-dom/render.md delete mode 100644 src/content/reference/react-dom/server/renderToNodeStream.md delete mode 100644 src/content/reference/react-dom/server/renderToStaticNodeStream.md create mode 100644 src/content/reference/react-dom/static/index.md create mode 100644 src/content/reference/react-dom/static/prerender.md create mode 100644 src/content/reference/react-dom/static/prerenderToNodeStream.md delete mode 100644 src/content/reference/react-dom/unmountComponentAtNode.md delete mode 100644 src/content/reference/react/createFactory.md delete mode 100644 src/content/reference/rsc/server-actions.md create mode 100644 src/content/reference/rsc/server-functions.md diff --git a/src/components/Icon/IconRocket.tsx b/src/components/Icon/IconRocket.tsx new file mode 100644 index 00000000..457736c7 --- /dev/null +++ b/src/components/Icon/IconRocket.tsx @@ -0,0 +1,32 @@ +/* + * Copyright (c) Facebook, Inc. and its affiliates. + */ + +import {memo} from 'react'; + +export const IconRocket = memo< + JSX.IntrinsicElements['svg'] & {title?: string; size?: 's' | 'md'} +>(function IconRocket({className, size = 'md'}) { + return ( + + ); +}); diff --git a/src/components/Layout/Sidebar/SidebarLink.tsx b/src/components/Layout/Sidebar/SidebarLink.tsx index 8a71d9e6..4429989d 100644 --- a/src/components/Layout/Sidebar/SidebarLink.tsx +++ b/src/components/Layout/Sidebar/SidebarLink.tsx @@ -16,7 +16,7 @@ interface SidebarLinkProps { selected?: boolean; title: string; level: number; - canary?: boolean; + version?: 'canary' | 'major'; icon?: React.ReactNode; isExpanded?: boolean; hideArrow?: boolean; @@ -27,7 +27,7 @@ export function SidebarLink({ href, selected = false, title, - canary, + version, level, isExpanded, hideArrow, @@ -75,10 +75,17 @@ export function SidebarLink({ {/* This here needs to be refactored ofc */}
{title}{' '} - {canary && ( + {version === 'major' && ( + + React 19 + + )} + {version === 'canary' && ( )}
diff --git a/src/components/Layout/Sidebar/SidebarRouteTree.tsx b/src/components/Layout/Sidebar/SidebarRouteTree.tsx index 3f058073..54f02b92 100644 --- a/src/components/Layout/Sidebar/SidebarRouteTree.tsx +++ b/src/components/Layout/Sidebar/SidebarRouteTree.tsx @@ -87,7 +87,7 @@ export function SidebarRouteTree({ path, title, routes, - canary, + version, heading, hasSectionHeader, sectionHeader, @@ -121,7 +121,7 @@ export function SidebarRouteTree({ selected={selected} level={level} title={title} - canary={canary} + version={version} isExpanded={isExpanded} hideArrow={isForceExpanded} /> @@ -145,7 +145,7 @@ export function SidebarRouteTree({ selected={selected} level={level} title={title} - canary={canary} + version={version} /> ); diff --git a/src/components/Layout/getRouteMeta.tsx b/src/components/Layout/getRouteMeta.tsx index 3564dd73..b3d14725 100644 --- a/src/components/Layout/getRouteMeta.tsx +++ b/src/components/Layout/getRouteMeta.tsx @@ -19,8 +19,8 @@ export type RouteTag = export interface RouteItem { /** Page title (for the sidebar) */ title: string; - /** Optional canary flag for heading */ - canary?: boolean; + /** Optional version flag for heading */ + version?: 'canary' | 'major'; /** Optional page description for heading */ description?: string; /* Additional meta info for page tagging */ diff --git a/src/components/MDX/ExpandableCallout.tsx b/src/components/MDX/ExpandableCallout.tsx index 415d5d86..5f594063 100644 --- a/src/components/MDX/ExpandableCallout.tsx +++ b/src/components/MDX/ExpandableCallout.tsx @@ -8,8 +8,16 @@ import {IconNote} from '../Icon/IconNote'; import {IconWarning} from '../Icon/IconWarning'; import {IconPitfall} from '../Icon/IconPitfall'; import {IconCanary} from '../Icon/IconCanary'; +import {IconRocket} from '../Icon/IconRocket'; -type CalloutVariants = 'deprecated' | 'pitfall' | 'note' | 'wip' | 'canary'; +type CalloutVariants = + | 'deprecated' + | 'pitfall' + | 'note' + | 'wip' + | 'canary' + | 'major' + | 'rsc'; interface ExpandableCalloutProps { children: React.ReactNode; @@ -59,6 +67,22 @@ const variantMap = { overlayGradient: 'linear-gradient(rgba(249, 247, 243, 0), rgba(249, 247, 243, 1)', }, + major: { + title: 'React 19', + Icon: IconRocket, + containerClasses: 'bg-blue-10 dark:bg-blue-60 dark:bg-opacity-20', + textColor: 'text-blue-50 dark:text-blue-40', + overlayGradient: + 'linear-gradient(rgba(249, 247, 243, 0), rgba(249, 247, 243, 1)', + }, + rsc: { + title: 'React Server Components', + Icon: null, + containerClasses: 'bg-blue-10 dark:bg-blue-60 dark:bg-opacity-20', + textColor: 'text-blue-50 dark:text-blue-40', + overlayGradient: + 'linear-gradient(rgba(249, 247, 243, 0), rgba(249, 247, 243, 1)', + }, }; function ExpandableCallout({children, type = 'note'}: ExpandableCalloutProps) { @@ -72,9 +96,11 @@ function ExpandableCallout({children, type = 'note'}: ExpandableCalloutProps) { variant.containerClasses )}>

- + {variant.Icon && ( + + )} {variant.title}

diff --git a/src/components/MDX/MDXComponents.tsx b/src/components/MDX/MDXComponents.tsx index 6f99121f..0e22c792 100644 --- a/src/components/MDX/MDXComponents.tsx +++ b/src/components/MDX/MDXComponents.tsx @@ -97,6 +97,14 @@ const Canary = ({children}: {children: React.ReactNode}) => ( {children} ); +const NextMajor = ({children}: {children: React.ReactNode}) => ( + {children} +); + +const RSC = ({children}: {children: React.ReactNode}) => ( + {children} +); + const CanaryBadge = ({title}: {title: string}) => ( ( ); +const NextMajorBadge = ({title}: {title: string}) => ( + + React 19 + +); + +const RSCBadge = ({title}: {title: string}) => ( + + RSC + +); + const Blockquote = ({ children, ...props @@ -483,6 +511,10 @@ export const MDXComponents = { Note, Canary, CanaryBadge, + NextMajor, + NextMajorBadge, + RSC, + RSCBadge, PackageImport, ReadBlogPost, Recap, diff --git a/src/components/MDX/Sandpack/template.ts b/src/components/MDX/Sandpack/template.ts index 9ead18a1..42f02f6a 100644 --- a/src/components/MDX/Sandpack/template.ts +++ b/src/components/MDX/Sandpack/template.ts @@ -28,8 +28,8 @@ root.render( eject: 'react-scripts eject', }, dependencies: { - react: '^18.0.0', - 'react-dom': '^18.0.0', + react: '19.0.0-rc-3edc000d-20240926', + 'react-dom': '19.0.0-rc-3edc000d-20240926', 'react-scripts': '^5.0.0', }, }, diff --git a/src/content/blog/2024/12/05/react-19.md b/src/content/blog/2024/12/05/react-19.md index afe5812c..9f212209 100644 --- a/src/content/blog/2024/12/05/react-19.md +++ b/src/content/blog/2024/12/05/react-19.md @@ -324,6 +324,30 @@ The `use` API can only be called in render, similar to hooks. Unlike hooks, `use For more information, see the docs for [`use`](/reference/react/use). +## New React DOM Static APIs {/*new-react-dom-static-apis*/} + +We've added two new APIs to `react-dom/static` for static site generation: +- [`prerender`](/reference/react-dom/static/prerender) +- [`prerenderToNodeStream`](/reference/react-dom/static/prerenderToNodeStream) + +These new APIs improve on `renderToString` by waiting for data to load for static HTML generation. They are designed to work with streaming environments like Node.js Streams and Web Streams. For example, in a Web Stream environment, you can prerender a React tree to static HTML with `prerender`: + +```js +import { prerender } from 'react-dom/static'; + +async function handler(request) { + const {prelude} = await prerender(, { + bootstrapScripts: ['/main.js'] + }); + return new Response(prelude, { + headers: { 'content-type': 'text/html' }, + }); +} +``` + +Prerender APIs will wait for all data to load before returning the static HTML stream. Streams can be converted to strings, or sent with a streaming response. They do not support streaming content as it loads, which is supported by the existing [React DOM server rendering APIs](/reference/react-dom/server). + +For more information, see [React DOM Static APIs](/reference/react-dom/static). ## React Server Components {/*react-server-components*/} diff --git a/src/content/learn/manipulating-the-dom-with-refs.md b/src/content/learn/manipulating-the-dom-with-refs.md index e881c8a1..6d20232f 100644 --- a/src/content/learn/manipulating-the-dom-with-refs.md +++ b/src/content/learn/manipulating-the-dom-with-refs.md @@ -256,11 +256,11 @@ export default function CatFriends() { key={cat} ref={(node) => { const map = getMap(); - if (node) { - map.set(cat, node); - } else { + map.set(cat, node); + + return () => { map.delete(cat); - } + }; }} > @@ -309,42 +309,10 @@ li { } ``` -```json package.json hidden -{ - "dependencies": { - "react": "canary", - "react-dom": "canary", - "react-scripts": "^5.0.0" - } -} -``` - In this example, `itemsRef` doesn't hold a single DOM node. Instead, it holds a [Map](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map) from item ID to a DOM node. ([Refs can hold any values!](/learn/referencing-values-with-refs)) The [`ref` callback](/reference/react-dom/components/common#ref-callback) on every list item takes care to update the Map: -```js -
  • { - const map = getMap(); - if (node) { - // Add to the Map - map.set(cat, node); - } else { - // Remove from the Map - map.delete(cat); - } - }} -> -``` - -This lets you read individual DOM nodes from the Map later. - - - -This example shows another approach for managing the Map with a `ref` callback cleanup function. - ```js
  • ``` - +This lets you read individual DOM nodes from the Map later. + + + +When Strict Mode is enabled, ref callbacks will run twice in development. + +Read more about [how this helps find bugs](/reference/react/StrictMode#fixing-bugs-found-by-re-running-ref-callbacks-in-development) in callback refs. + + diff --git a/src/content/reference/react-dom/client/createRoot.md b/src/content/reference/react-dom/client/createRoot.md index b336b6e5..a2bef6bf 100644 --- a/src/content/reference/react-dom/client/createRoot.md +++ b/src/content/reference/react-dom/client/createRoot.md @@ -45,8 +45,8 @@ An app fully built with React will usually only have one `createRoot` call for i * **optional** `options`: An object with options for this React root. - * **optional** `onCaughtError`: Callback called when React catches an error in an Error Boundary. Called with the `error` caught by the Error Boundary, and an `errorInfo` object containing the `componentStack`. - * **optional** `onUncaughtError`: Callback called when an error is thrown and not caught by an Error Boundary. Called with the `error` that was thrown, and an `errorInfo` object containing the `componentStack`. + * **optional** `onCaughtError`: Callback called when React catches an error in an Error Boundary. Called with the `error` caught by the Error Boundary, and an `errorInfo` object containing the `componentStack`. + * **optional** `onUncaughtError`: Callback called when an error is thrown and not caught by an Error Boundary. Called with the `error` that was thrown, and an `errorInfo` object containing the `componentStack`. * **optional** `onRecoverableError`: Callback called when React automatically recovers from errors. Called with an `error` React throws, and an `errorInfo` object containing the `componentStack`. Some recoverable errors may include the original error cause as `error.cause`. * **optional** `identifierPrefix`: A string prefix React uses for IDs generated by [`useId`.](/reference/react/useId) Useful to avoid conflicts when using multiple roots on the same page. @@ -346,12 +346,6 @@ It is uncommon to call `render` multiple times. Usually, your components will [u ### Show a dialog for uncaught errors {/*show-a-dialog-for-uncaught-errors*/} - - -`onUncaughtError` is only available in the latest React Canary release. - - - By default, React will log all uncaught errors to the console. To implement your own error reporting, you can provide the optional `onUncaughtError` root option: ```js [[1, 6, "onUncaughtError"], [2, 6, "error", 1], [3, 6, "errorInfo"], [4, 10, "componentStack"]] @@ -578,28 +572,11 @@ export default function App() { } ``` -```json package.json hidden -{ - "dependencies": { - "react": "canary", - "react-dom": "canary", - "react-scripts": "^5.0.0" - }, - "main": "/index.js" -} -``` - ### Displaying Error Boundary errors {/*displaying-error-boundary-errors*/} - - -`onCaughtError` is only available in the latest React Canary release. - - - By default, React will log all errors caught by an Error Boundary to `console.error`. To override this behavior, you can provide the optional `onCaughtError` root option to handle errors caught by an [Error Boundary](/reference/react/Component#catching-rendering-errors-with-an-error-boundary): ```js [[1, 6, "onCaughtError"], [2, 6, "error", 1], [3, 6, "errorInfo"], [4, 10, "componentStack"]] @@ -865,8 +842,8 @@ function Throw({error}) { ```json package.json hidden { "dependencies": { - "react": "canary", - "react-dom": "canary", + "react": "19.0.0-rc-3edc000d-20240926", + "react-dom": "19.0.0-rc-3edc000d-20240926", "react-scripts": "^5.0.0", "react-error-boundary": "4.0.3" }, @@ -1123,8 +1100,8 @@ function Throw({error}) { ```json package.json hidden { "dependencies": { - "react": "canary", - "react-dom": "canary", + "react": "19.0.0-rc-3edc000d-20240926", + "react-dom": "19.0.0-rc-3edc000d-20240926", "react-scripts": "^5.0.0", "react-error-boundary": "4.0.3" }, diff --git a/src/content/reference/react-dom/client/hydrateRoot.md b/src/content/reference/react-dom/client/hydrateRoot.md index cc30ce22..c54b6fe1 100644 --- a/src/content/reference/react-dom/client/hydrateRoot.md +++ b/src/content/reference/react-dom/client/hydrateRoot.md @@ -41,8 +41,8 @@ React will attach to the HTML that exists inside the `domNode`, and take over ma * **optional** `options`: An object with options for this React root. - * **optional** `onCaughtError`: Callback called when React catches an error in an Error Boundary. Called with the `error` caught by the Error Boundary, and an `errorInfo` object containing the `componentStack`. - * **optional** `onUncaughtError`: Callback called when an error is thrown and not caught by an Error Boundary. Called with the `error` that was thrown and an `errorInfo` object containing the `componentStack`. + * **optional** `onCaughtError`: Callback called when React catches an error in an Error Boundary. Called with the `error` caught by the Error Boundary, and an `errorInfo` object containing the `componentStack`. + * **optional** `onUncaughtError`: Callback called when an error is thrown and not caught by an Error Boundary. Called with the `error` that was thrown and an `errorInfo` object containing the `componentStack`. * **optional** `onRecoverableError`: Callback called when React automatically recovers from errors. Called with the `error` React throws, and an `errorInfo` object containing the `componentStack`. Some recoverable errors may include the original error cause as `error.cause`. * **optional** `identifierPrefix`: A string prefix React uses for IDs generated by [`useId`.](/reference/react/useId) Useful to avoid conflicts when using multiple roots on the same page. Must be the same prefix as used on the server. @@ -376,12 +376,6 @@ It is uncommon to call [`root.render`](#root-render) on a hydrated root. Usually ### Show a dialog for uncaught errors {/*show-a-dialog-for-uncaught-errors*/} - - -`onUncaughtError` is only available in the latest React Canary release. - - - By default, React will log all uncaught errors to the console. To implement your own error reporting, you can provide the optional `onUncaughtError` root option: ```js [[1, 7, "onUncaughtError"], [2, 7, "error", 1], [3, 7, "errorInfo"], [4, 11, "componentStack"]] @@ -612,28 +606,11 @@ export default function App() { } ``` -```json package.json hidden -{ - "dependencies": { - "react": "canary", - "react-dom": "canary", - "react-scripts": "^5.0.0" - }, - "main": "/index.js" -} -``` - ### Displaying Error Boundary errors {/*displaying-error-boundary-errors*/} - - -`onCaughtError` is only available in the latest React Canary release. - - - By default, React will log all errors caught by an Error Boundary to `console.error`. To override this behavior, you can provide the optional `onCaughtError` root option for errors caught by an [Error Boundary](/reference/react/Component#catching-rendering-errors-with-an-error-boundary): ```js [[1, 7, "onCaughtError"], [2, 7, "error", 1], [3, 7, "errorInfo"], [4, 11, "componentStack"]] @@ -902,8 +879,8 @@ function Throw({error}) { ```json package.json hidden { "dependencies": { - "react": "canary", - "react-dom": "canary", + "react": "19.0.0-rc-3edc000d-20240926", + "react-dom": "19.0.0-rc-3edc000d-20240926", "react-scripts": "^5.0.0", "react-error-boundary": "4.0.3" }, @@ -1164,8 +1141,8 @@ function Throw({error}) { ```json package.json hidden { "dependencies": { - "react": "canary", - "react-dom": "canary", + "react": "19.0.0-rc-3edc000d-20240926", + "react-dom": "19.0.0-rc-3edc000d-20240926", "react-scripts": "^5.0.0", "react-error-boundary": "4.0.3" }, diff --git a/src/content/reference/react-dom/components/common.md b/src/content/reference/react-dom/components/common.md index 62ee0813..9d153321 100644 --- a/src/content/reference/react-dom/components/common.md +++ b/src/content/reference/react-dom/components/common.md @@ -246,43 +246,41 @@ These events fire for resources like [`