+
+ );
+}
+```
+
+```js
+import { ViewTransition, useState, startTransition } from 'react';
+import { Video } from './Video';
+import videos from './data';
+
+export default function Component() {
+ const [showItem, setShowItem] = useState(false);
+
+ return (
+ <>
+
+
+ {showItem && (
+
+
+
+
+ {video.title}
+ {video.description}
+
+
+ );
+}
+```
+
+```js
+import {
+ ViewTransition,
+ addTransitionType,
+ useState,
+ startTransition,
+ Fragment
+} from 'react';
+import { Video } from './Video';
+import videos from './data';
+import './animations.css';
+
+export default function Component() {
+ const [selected, setSelected] = useState(0)
+ const video = videos[selected];
+
+ return (
+ <>
+
+
+
+
+ {video.title}
+ {video.description}
+
+
+
+
+
+
+
+ );
+}
+
+export function VideoPlaceholder() {
+ const video = {image: 'loading'};
+ return (
+
+
+
+
+ {video.title}
+ {video.description}
+
+
+ );
+}
+```
+
+```js
+import { Suspense, useState, startTransition, use, ViewTransition } from 'react';
+import { Video, VideoPlaceholder } from './Video';
+import { fetchVideo } from './data';
+
+export default function Component() {
+ const [showItem, setShowItem] = useState(false);
+
+ return (
+ <>
+
+
+ {showItem && (
+
+
+
+
+
+
+
+
+ );
+}
+
+export function VideoPlaceholder() {
+ const video = {image: 'loading'};
+ return (
+
+
+
+
+ {video.title}
+ {video.description}
+
+
+ );
+}
+```
+
+```js
+import { Suspense, useState, startTransition, use, ViewTransition } from 'react';
+import { Video, VideoPlaceholder } from './Video';
+import { fetchVideo } from './data';
+
+export default function Component() {
+ const [showItem, setShowItem] = useState(false);
+
+ return (
+ <>
+
+
+ {showItem && (
+
+
+
+
+
+
+ + +
+ 
+
+
+ );
+}
+
+export function ProfileCardLoading() {
+ return (
+
+
+ Jack Pope
+{quote}
+
+
+
+ );
+}
+```
+
+
+```js src/VanillaProfileCard.js
+import { useRef } from 'react';
+import { fetchQuote } from './data.js';
+import { freshStylesheetUrl, freshImageUrl } from './resources.js';
+
+export function VanillaProfileCard() {
+ const ref = useRef(null);
+ async function show() {
+ const quote = await fetchQuote();
+ const doc = ref.current.contentWindow.document;
+ doc.open();
+ doc.write(`
+
+
+
+ +
+
+ })
+
+
+ `);
+ doc.close();
+ }
+ return (
+ <>
+
+
+
+ );
+}
+```
+
+```js src/resources.js hidden
+// Add a unique parameter so the resources aren't cached,
+// and every run shows the loading state.
+export function freshStylesheetUrl() {
+ return (
+ 'https://fonts.googleapis.com/css2?family=Caveat&display=swap' +
+ '&t=' +
+ Date.now()
+ );
+}
+
+export function freshImageUrl() {
+ return 'https://react.dev/images/team/jack-pope.jpg?t=' + Date.now();
+}
+```
+
+```js src/data.js hidden
+// Note: the way you would do data fetching depends on
+// the framework that you use together with Suspense.
+
+export async function fetchQuote() {
+ // Add a fake delay to make waiting noticeable.
+ await new Promise((resolve) => {
+ setTimeout(resolve, 250);
+ });
+ return 'The best way to predict the future is to invent it.';
+}
+```
+
+```css
+#root {
+ min-height: 320px;
+}
+button {
+ margin-right: 8px;
+}
+hr {
+ margin: 16px 0;
+}
+img {
+ object-fit: cover;
+}
+.profile-card {
+ display: flex;
+ gap: 12px;
+ align-items: center;
+ margin-top: 1em;
+}
+.profile-card img {
+ border-radius: 50%;
+ background: #dfe3e9;
+}
+.name {
+ margin: 0 0 4px;
+ font-family: 'Caveat', sans-serif;
+ font-size: 22px;
+ line-height: 28px;
+ font-weight: bold;
+}
+.bio {
+ margin: 0;
+ font-family: 'Caveat', sans-serif;
+ font-size: 20px;
+ line-height: 26px;
+}
+.profile-card img {
+ display: block;
+}
+.avatar-placeholder {
+ width: 80px;
+ height: 80px;
+ border-radius: 50%;
+ background: #dfe3e9;
+}
+.name-placeholder,
+.bio-placeholder {
+ border-radius: 4px;
+ background: #dfe3e9;
+ color: transparent;
+}
+.name-placeholder {
+ width: 90px;
+}
+.bio-placeholder {
+ width: 220px;
+}
+.vanilla-frame {
+ display: block;
+ margin-top: 1em;
+ border: none;
+ width: 100%;
+ height: 110px;
+}
+```
+
+```json package.json hidden
+{
+ "dependencies": {
+ "react": "19.3.0-canary-f1f7ed2a-20260904",
+ "react-dom": "19.3.0-canary-f1f7ed2a-20260904",
+ "react-scripts": "latest"
+ }
+}
+```
+
+
+
+ Jack Pope
+${quote}
+` just to hold a ref sometimes works, but it can also interfere with your component's styling or layout. Moreover, if a component doesn't expose a `ref` prop, you would need to modify that component to do so, which might be impossible if it comes from a library you don't control.
+
+Fragment Refs solve these problems by providing a limited set of commonly used DOM methods that work with any React component, regardless of what it renders.
+
+In 19.3, you can use them by passing a ref directly to a [``](/reference/react/Fragment). This ref gives you a `FragmentInstance`, which you can use to work with the Fragment's DOM children:
+
+```js {2,5-6,10}
+function Component() {
+ const fragmentRef = useRef(null);
+
+ useEffect(() => {
+ const fragmentInstance = fragmentRef.current;
+ fragmentInstance.focus();
+ }, []);
+
+ return (
+
+ {posts.map(post => (
+
+ {post.title}
+
+ ))}
+
+ )
+}
+```
+
+The `FragmentInstance` operates on the children's DOM _as a group_, without changing its structure:
+
+- `addEventListener`, `removeEventListener`, and `dispatchEvent` manage events for first-level children.
+- `focus`, `focusLast`, and `blur` move focus across nested children, depth-first.
+- `observeUsing` and `unobserveUsing` connect an `IntersectionObserver` or `ResizeObserver`.
+- `getClientRects`, `getRootNode`, `compareDocumentPosition`, and `scrollIntoView` let you measure and scroll to the fragment's first-level children.
+
+Thus, Fragment Refs let you attach behavior to other components without requiring you to modify those component's internals, or without changing the DOM structure that they already produce.
+
+This example shows an `InView` component with an `onChange` prop that fires whenever its children enter or exit the viewport:
+
+
+
+```js src/App.js active
+import { useState } from 'react';
+import Card from './Card';
+import InView from './InView';
+
+export default function App() {
+ const [isVisible, setIsVisible] = useState(true);
+
+ return (
+
+ {children}
+
+ );
+}
+```
+
+```css
+.page {
+ transition: background 0.3s;
+}
+
+.page.visible {
+ background: #d4edda;
+}
+
+.filler {
+ height: 500px;
+ display: flex;
+ align-items: center;
+ justify-content: center;
+ color: #aaa;
+ font-size: 14px;
+}
+
+.card {
+ padding: 16px;
+ background: white;
+ border: 1px solid #ddd;
+ border-radius: 8px;
+ margin: 8px 16px;
+ box-shadow: 0 1px 3px rgba(0,0,0,0.08);
+ font-weight: 600;
+ font-size: 14px;
+}
+```
+
+
+```json package.json hidden
+{
+ "dependencies": {
+ "react": "19.3.0-canary-f1f7ed2a-20260904",
+ "react-dom": "19.3.0-canary-f1f7ed2a-20260904",
+ "react-scripts": "latest"
+ }
+}
+```
+
+
+
+Notice how `InView` is able to add behavior to its children, even though there's no single parent DOM element, and in spite of `Card` not exposing a `ref` prop.
+
+To learn more about working with Fragment Refs, see the [`` docs](/reference/react/Fragment).
+
+---
+
+## New React DOM Features {/*new-react-dom-features*/}
+
+### `browser` {/*browser*/}
+
+If your app uses server rendering, your components will render in two different environments:
+
+- On the server, components render to produce the initial HTML
+- On the client, components render to enrich that HTML with event handlers
+
+Most of time, your components should be able to produce HTML that matches their initial client-rendered output, ensuring they hydrate correctly while still letting users see as much content as possible on the initial load.
+
+But in rare cases, a component may not be able to produce meaningful UI on the server. For example, it might depend on a browser-only API like `localStorage`, or it might read from the browser's local timezone. In these cases, you may want to opt that component out of server rendering altogether.
+
+Previously, you might do this using some state that you'd update in an effect, or by checking for the presence of browser APIs like `window`:
+
+```js
+function Component() {
+ const [mounted, setMounted] = useState(false);
+
+ useEffect(() => {
+ setMounted(true)
+ }, [])
+
+ // ...
+}
+
+function Component() {
+ const isBrowser = typeof window !== 'undefined';
+
+ // ...
+}
+```
+
+In 19.3, React now includes a first-class API for this technique.
+
+A component can call `use(browser())` to opt out of server-side rendering:
+
+```js {5}
+import { use } from 'react';
+import { browser } from 'react-dom';
+
+function Component() {
+ use(browser());
+
+ // ...
+}
+```
+
+This will trigger Suspense on the server, but _not_ in the client. During server-side rendering, the nearest Suspense boundary's fallback will show in the HTML. Once the component is hydrated on the client, `use(browser())` does not suspend, allowing the component to continue rendering as normal.
+
+Here's an example of a component that renders the local time zone from your device. Press **Reload** to see the initial HTML followed by React's first render on the client:
+
+
+
+```js
+import { Suspense, use } from 'react';
+import { browser } from 'react-dom';
+
+function TimeZone() {
+ use(browser());
+ const timeZone = new Intl.DateTimeFormat().resolvedOptions().timeZone;
+
+ return
+
+
+ );
+}
+```
+
+
+```js src/Document.js hidden
+import App from './App.js';
+
+export default function Document() {
+ return (
+
+
+ Event details
+
+
+
+ Conditional browser rendering
+
+
+
+
+
+```
+
+```css src/styles.css hidden
+iframe {
+ width: 100%;
+ height: 240px;
+ border: 0;
+}
+```
+
+```json package.json hidden
+{
+ "dependencies": {
+ "react": "19.3.0-canary-f1f7ed2a-20260904",
+ "react-dom": "19.3.0-canary-f1f7ed2a-20260904",
+ "react-scripts": "latest"
+ }
+}
+```
+
+
+
+Because TimeZone suspends on the server, the initial HTML includes the Suspense fallback. After a small artificial delay, React hydrates the page, allowing the component to render as normal in the browser.
+
+Thus, for components that cannot produce meaningful UI during server rendering, `browser` lets you use Suspense for their loading states, allowing them to participate with other components that suspend until they're ready to render.
+
+---
+
+Like other calls to `use`, `use(browser())` can be called inside a conditional statement or after an early return. This lets you write components or custom Hooks that can opt out of server rendering based on a condition, such as the value of a prop.
+
+Here's the same example from above, except now our TimeZone component accepts an optional default value it can render as part of the initial HTML:
+
+
+
+```js
+import { Suspense, use } from 'react';
+import { browser } from 'react-dom';
+
+function TimeZone({ defaultValue }) {
+ if (defaultValue) {
+ return
+ +Event details
+
+
+
+ Conditional browser rendering
+
+
+
+
+
+```
+
+```css src/styles.css hidden
+iframe {
+ width: 100%;
+ height: 240px;
+ border: 0;
+}
+```
+
+```json package.json hidden
+{
+ "dependencies": {
+ "react": "19.3.0-canary-f1f7ed2a-20260904",
+ "react-dom": "19.3.0-canary-f1f7ed2a-20260904",
+ "react-scripts": "latest"
+ }
+}
+```
+
+
+
+Notice how TimeZone only suspends in the second case, when no default is provided.
+
+Another useful example of this pattern is opting a data-fetching Hook like `useQuery` out of server rendering, unless that query's initial data was passed in (for example from a Server Component or framework's loader function):
+
+```js {3}
+function useBrowserQuery(query, options) {
+ if (options.initialData === undefined) {
+ use(browser());
+ }
+
+ return useQuery(query, options);
+}
+
+function ProductDetails({ productId, initialData }) {
+ const product = useBrowserQuery(`/api/products/${productId}`, {
+ initialData,
+ });
+
+ return ` can be rendered directly in Server Components {/*context-can-be-rendered-directly-in-server-components*/}
+
+While Server Components can't _create_ Context, they can _render_ Context by importing it from a `'use client'` module.
+
+Previously, this required the client module to export a separate wrapper component, often called a Provider:
+
+```js {7-9}
+// user-context.js
+'use client';
+import { createContext } from 'react';
+
+export const UserContext = createContext(null);
+
+export function UserProvider({ currentUser, children }) {
+ return {children} ;
+}
+```
+
+```js {8}
+// server-component.js
+import { UserProvider } from './user-context';
+
+export async function Layout({ children }) {
+ const currentUser = await getCurrentUser();
+
+ return (
+
+ {children}
+
+ )
+}
+```
+
+Notice that in this example, the provider does nothing other than pass the prop from the Server Component directly to the Context.
+
+In React 19.3, Server Components can import and render Context directly from a `'use client'` module, without an additional wrapping component:
+
+```js {5}
+// user-context.js
+'use client';
+import { createContext } from 'react';
+
+export const UserContext = createContext(null);
+```
+
+```js {8}
+// server-component.js
+import { UserContext } from './user-context';
+
+export async function Layout({ children }) {
+ const currentUser = await getCurrentUser();
+
+ return (
+
+ {children}
+
+ )
+}
+```
+
+This is especially useful for Contexts that solely exist to allow Server Components to share some data with the rest of the client tree.
+
+
+---
+
+## Changelog {/*changelog*/}
+
+Other notable changes
+- `react`: Render Transitions independently instead of entangling them into a single render, so a slow Transition no longer holds up unrelated ones [#37290](https://github.com/react/react/pull/37290)
+- `react-dom`: Double invoke Effects in Strict Mode during hydration, matching client-rendered roots [#35961](https://github.com/react/react/pull/35961)
+- `react`: Add a warning when `use` is used incorrectly in a conditional [#37104](https://github.com/react/react/pull/37104)
+- `react`: Rename "form state" to "action state" in `useActionState` error messages [#35790](https://github.com/react/react/pull/35790)
+- `react-dom`: Add support for `onFullscreenChange` and `onFullscreenError` events [#34621](https://github.com/react/react/pull/34621)
+- `react-dom`: Add support for the `maskType` SVG property [#35921](https://github.com/react/react/pull/35921)
+- `react-dom`: Support `fetchPriority` for module resources [#36835](https://github.com/react/react/pull/36835)
+- `react-dom`: Fire `onReset` when React automatically resets a form after a Server Action [#35176](https://github.com/react/react/pull/35176)
+- `react-dom`: Include the `submitter` in `submit` events [#35590](https://github.com/react/react/pull/35590)
+- `react-dom`: Recognize `credentialless` as a boolean attribute on iframes [#36148](https://github.com/react/react/pull/36148)
+- `react-dom`: Batch updates from `resize` events until the next frame [#35117](https://github.com/react/react/pull/35117)
+- `react-server`: Transport `Error.cause` [#35810](https://github.com/react/react/pull/35810) and `AggregateError.errors` [#36156](https://github.com/react/react/pull/36156) to the client
+- `react-server`: Add support for `` in Flight [#34697](https://github.com/react/react/pull/34697)
+
+Notable bug fixes
+
+- `react`: Fix `useDeferredValue` getting stuck on an old value [#36134](https://github.com/react/react/pull/36134)
+- `react`: Fix context propagation into Suspense fallbacks [#36160](https://github.com/react/react/pull/36160) and through suspended Suspense boundaries [#35839](https://github.com/react/react/pull/35839)
+- `react`: Fix a hang when updating a dehydrated Suspense boundary inside a hidden tree [#37135](https://github.com/react/react/pull/37135)
+- `react`: Fix `useSyncExternalStore` missing store mutations that happened while an `` tree was hidden [#36947](https://github.com/react/react/pull/36947)
+- `react`: Fix `useEffectEvent` to read the latest values in `forwardRef` and `memo` components [#34831](https://github.com/react/react/pull/34831)
+- `react`: Fix form status resetting when component state is updated [#34075](https://github.com/react/react/pull/34075)
+- `react`: Fix several Fast Refresh bugs with `lazy`, `memo`, and edits that change a component's kind [#36965](https://github.com/react/react/pull/36965), [#36964](https://github.com/react/react/pull/36964), [#36963](https://github.com/react/react/pull/36963), [#36950](https://github.com/react/react/pull/36950)
+- `react`: Fix a bug where `` was still hoisted to `<head>` after the `<Activity>` containing the `<title>` changed mode from `visible` to `hidden` [#34983](https://github.com/react/react/pull/34983)
+- `react`: Don't let errors escape a hidden `<Activity>` [#35074](https://github.com/react/react/pull/35074)
+- `react`: Hide portal contents rendered inside a hidden `<Activity>` [#35091](https://github.com/react/react/pull/35091)
+- `react`: Don't reference the internal `<Offscreen>` type in error messages [#35763](https://github.com/react/react/pull/35763)
+- `react-dom`: Fix focus for delegated and already-focused elements [#36010](https://github.com/react/react/pull/36010)
+- `react-dom`: Fix a `FragmentInstance` listener leak by normalizing capture options per the DOM spec [#36047](https://github.com/react/react/pull/36047)
+- `react-dom`: Fix a `<ViewTransition>` crash in Mobile Safari [#35337](https://github.com/react/react/pull/35337)
+- `react-dom`: Fix a `<ViewTransition>` crash with `SuspenseList` [#35520](https://github.com/react/react/pull/35520)
+- `react-dom`: Update `defaultValue` for `type="number"` inputs to match other input types [#36980](https://github.com/react/react/pull/36980)
+- `react-dom`: Avoid setting `innerHTML` when it hasn't changed [#36949](https://github.com/react/react/pull/36949)
+- `react-dom`: Fix a false-positive hydration mismatch on `nonce` attributes [#37030](https://github.com/react/react/pull/37030)
+- `react-dom`: Fix `react-dom/server` hanging on Deno [#35235](https://github.com/react/react/pull/35235)
+- `react-server`: Fix dropped `FormData` entries in `decodeReplyFromBusboy` [#36468](https://github.com/react/react/pull/36468)
+- `react-server`: Fix a stack overflow with deep async chains [#35612](https://github.com/react/react/pull/35612) and a `RangeError` from exponential debug info growth [#37481](https://github.com/react/react/pull/37481)
+
+For a full list of changes, please see the [Changelog](https://github.com/react/react/blob/main/CHANGELOG.md).
+
+---
+
+_Thanks to [Sam Selikoff](https://x.com/samselikoff) for writing this post, and to [Matt Carroll](https://mattcarrollcode.com/), [Dan Abramov](https://bsky.app/profile/danabra.mov), and [Andrew Clark](https://x.com/acdlite) for reviewing this post._
diff --git a/src/content/blog/index.md b/src/content/blog/index.md
index cf5051c6a..f8dfba101 100644
--- a/src/content/blog/index.md
+++ b/src/content/blog/index.md
@@ -14,6 +14,12 @@ Bluesky'de [@react.dev](https://bsky.app/profile/react.dev) hesabını veya Twit
<div className="sm:-mx-5 flex flex-col gap-5 mt-12">
+<BlogCard title="React 19.3" date="September 9, 2026" url="/blog/2026/09/09/react-19-3">
+
+React 19.3 adds new features like View Transitions, Fragment Refs, browser(), Trusted Types, and more. In this post ...
+
+</BlogCard>
+
<BlogCard title="The React Foundation: A New Home for React Hosted by the Linux Foundation" date="February 24, 2026" url="/blog/2026/02/24/the-react-foundation">
The React Foundation has officially launched under the Linux Foundation.
diff --git a/src/content/community/conferences.md b/src/content/community/conferences.md
index 2e95e24ea..f3ae269bb 100644
--- a/src/content/community/conferences.md
+++ b/src/content/community/conferences.md
@@ -10,27 +10,41 @@ Do you know of a local React.js conference? Add it here! (Please keep the list c
## Upcoming Conferences {/*upcoming-conferences*/}
-### React Paris 2026 {/*react-paris-2026*/}
-March 26 - 27, 2026. In-person in Paris, France (hybrid event)
+### ZurichJS Conf 2026 {/*zurichjs-conf-2026*/}
+September 10-11, 2026. In-person in Zurich, Switzerland
-[Website](https://react.paris/) - [Twitter](https://x.com/BeJS_)
+[Website](https://conf.zurichjs.com?utm_campaign=ZurichJS_Conf&utm_source=referral&utm_content=reactjs_community_conferences) - [Twitter](https://x.com/zurichjs) - [LinkedIn](https://www.linkedin.com/company/zurichjs/)
-### CityJS London 2026 {/*cityjs-london-2026*/}
-April 14-17, 2026. In-person in London
+### React Alicante 2026 {/*react-alicante-2026*/}
+Sep 24 - 26, 2026. In-person in Alicante
-[Website](https://india.cityjsconf.org/) - [Twitter](https://x.com/cityjsconf) - [Bluesky](https://bsky.app/profile/cityjsconf.bsky.social)
+[Website](https://reactalicante.es//) - [Twitter](https://x.com/ReactAlicante)
-### ZurichJS Conf 2026 {/*zurichjs-conf-2026*/}
-September 10-11, 2026. In-person in Zurich, Switzerland
+### CityJS Athens 2026 {/*cityjs-athens-2026*/}
+October 21-23, 2026. In-person in Athens
+
+[Website](https://athens.cityjsconf.org/) - [Twitter](https://x.com/cityjsconf) - [Bluesky](https://bsky.app/profile/cityjsconf.bsky.social)
+
+
+## Past Conferences {/*past-conferences*/}
-[Website](https://conf.zurichjs.com?utm_campaign=ZurichJS_Conf&utm_source=referral&utm_content=reactjs_community_conferences) - [Twitter](https://x.com/zurichjs) - [LinkedIn](https://www.linkedin.com/company/zurichjs/)
### React Conf Japan 2027 {/*react-conf-japan-2027*/}
April 24, 2027. In-person in Tokyo, Japan
[Website](https://reactconf.jp/) - [Twitter](https://x.com/reactconfjp)
-## Past Conferences {/*past-conferences*/}
+### CityJS London 2026 {/*cityjs-london-2026*/}
+April 14-17, 2026. In-person in London
+
+[Website](https://india.cityjsconf.org/) - [Twitter](https://x.com/cityjsconf) - [Bluesky](https://bsky.app/profile/cityjsconf.bsky.social)
+
+
+### React Paris 2026 {/*react-paris-2026*/}
+March 26 - 27, 2026. In-person in Paris, France (hybrid event)
+
+[Website](https://react.paris/) - [Twitter](https://x.com/BeJS_)
+
### CityJS New Delhi 2026 {/*cityjs-newdelhi-2026*/}
February 12-13, 2026. In-person in New Delhi, India
diff --git a/src/content/community/team.md b/src/content/community/team.md
index e321f240b..4e307463d 100644
--- a/src/content/community/team.md
+++ b/src/content/community/team.md
@@ -26,7 +26,7 @@ React work is organized into working groups, each responsible for an area of the
<TeamMember name="Moti Zilberman" permalink="moti-zilberman" photo="/images/team/gh-motiz88.jpg" github="motiz88" title="Engineer at Meta" group="DevX*" />
-<TeamMember name="Nicola Corti" permalink="nicola-corti" photo="/images/team/gh-cortinico.jpg" github="cortinico" title="Engineer at Meta" group="React Native*, Docs & Community" />
+<TeamMember name="Nicola Corti" permalink="nicola-corti" photo="/images/team/gh-cortinico.jpg" github="cortinico" twitter="cortinico" title="Engineer at Meta" group="React Native*, Docs & Community" />
<TeamMember name="Rick Hanlon" permalink="rick-hanlon" photo="/images/team/rickhanlonii.jpg" github="rickhanlonii" twitter="rickyfm" threads="rickhanlonii" bsky="ricky.fm" title="Engineer at Meta" group="Docs & Community*, DOM, Fiber, Server, DevX">
Ricky majored in theoretical math and somehow found himself on the React Native team for a couple years before joining the React team. When he's not programming you can find him snowboarding, biking, climbing, golfing, or closing GitHub issues that do not match the issue template.
@@ -38,10 +38,12 @@ React work is organized into working groups, each responsible for an area of the
## Working Group members {/*working-group-members*/}
-<TeamMember name="Alex Hunt" permalink="alex-hunt" photo="/images/team/gh-huntie.jpg" github="huntie" title="Engineer at Meta" group="DevX, React Native" />
+<TeamMember name="Alex Hunt" permalink="alex-hunt" photo="/images/team/gh-huntie.jpg" github="huntie" twitter="huntie" title="Engineer at Meta" group="DevX, React Native" />
<TeamMember name="Aurora Scharff" permalink="aurora-scharff" photo="/images/team/gh-aurorascharff.jpg" github="aurorascharff" title="Engineer at Vercel" group="Docs & Community" />
+<TeamMember name="Bartosz Kaszubowski" permalink="bartosz-kaszubowski" photo="/images/team/gh-simek.png" github="simek" bsky="simek.dev" title="Engineer" group="Docs & Community" />
+
<TeamMember name="Brent Vatne" permalink="brent-vatne" photo="/images/team/gh-brentvatne.jpg" github="brentvatne" title="Engineer at Expo" group="React Native" />
<TeamMember name="Dan Abramov" permalink="dan-abramov" photo="/images/team/gaearon.jpg" github="gaearon" bsky="danabra.mov" title="Engineer at Vercel" group="Docs & Community">
@@ -77,16 +79,16 @@ React work is organized into working groups, each responsible for an area of the
<TeamMember name="Michał Pierzchała" permalink="michal-pierzchala" photo="/images/team/gh-thymikee.jpg" github="thymikee" title="Engineer at Callstack" group="React Native" />
<TeamMember name="Mike Vitousek" permalink="mike-vitousek" photo="/images/team/mike.jpg" github="mvitousek" title="Engineer at Meta" group="Compiler">
- Mike went to grad school dreaming of becoming a professor but realized that he liked building things a lot more than writing grant applications. Mike joined Meta to work on Javascript infrastructure, which ultimately led him to work on the React Compiler. When not hacking on either Javascript or OCaml, Mike can often be found hiking or skiing in the Pacific Northwest.
+ Mike went to grad school dreaming of becoming a professor but realized that he liked building things a lot more than writing grant applications. Mike joined Meta to work on JavaScript infrastructure, which ultimately led him to work on the React Compiler. When not hacking on either Javascript or OCaml, Mike can often be found hiking or skiing in the Pacific Northwest.
</TeamMember>
<TeamMember name="Pieter De Baets" permalink="pieter-de-baets" photo="/images/team/gh-javache.jpg" github="javache" title="Engineer at Meta" group="Compiler, Fiber, React Native" />
-<TeamMember name="Riccardo Cipolleschi" permalink="riccardo-cipolleschi" photo="/images/team/gh-cipolleschi.png" github="cipolleschi" title="Engineer at Meta" group="Docs & Community, React Native" />
+<TeamMember name="Riccardo Cipolleschi" permalink="riccardo-cipolleschi" photo="/images/team/gh-cipolleschi.png" github="cipolleschi" twitter="CipolleschiR" title="Engineer at Meta" group="Docs & Community, React Native" />
-<TeamMember name="Rob Hogan" permalink="rob-hogan" photo="/images/team/gh-rh389.jpg" github="rh389" title="Engineer at Meta" group="DevX" />
+<TeamMember name="Rob Hogan" permalink="rob-hogan" photo="/images/team/gh-robhogan.jpg" github="robhogan" twitter="robjhogan" title="Engineer at Meta" group="DevX" />
-<TeamMember name="Rubén Norte" permalink="ruben-norte" photo="/images/team/gh-rubennorte.jpg" github="rubennorte" title="Engineer at Meta" group="Fiber" />
+<TeamMember name="Rubén Norte" permalink="ruben-norte" photo="/images/team/gh-rubennorte.jpg" github="rubennorte" title="Engineer at Meta" group="Fiber, React Native" />
<TeamMember name="Ruslan Lesiutin" permalink="ruslan-lesiutin" photo="/images/team/lesiutin.jpg" github="hoxyq" twitter="ruslanlesiutin" threads="lesiutin" title="Engineer at Meta" group="DOM, DevX">
Ruslan's introduction to UI programming started when he was a kid by manually editing HTML templates for his custom gaming forums. Somehow, he ended up majoring in Computer Science. He enjoys music, games, and memes. Mostly memes.
@@ -102,8 +104,6 @@ React work is organized into working groups, each responsible for an area of the
<TeamMember name="Vitali Zaidman" permalink="vitali-zaidman" photo="/images/team/gh-vzaidman.jpg" github="vzaidman" title="Engineer at Meta" group="DevX" />
-<TeamMember name="Vojtěch Šimek" permalink="vojtech-simek" photo="/images/team/gh-simek.png" github="simek" title="Developer" group="Docs & Community" />
-
## Advisors {/*advisors*/}
<TeamMember name="Eli White" permalink="eli-white" photo="/images/team/eli-white.jpg" github="elicwhite" twitter="Eli_White" threads="elicwhite" title="Engineer at Meta">
@@ -115,7 +115,7 @@ React work is organized into working groups, each responsible for an area of the
</TeamMember>
<TeamMember name="Jimmy Lai" permalink="jimmy-lai" photo="/images/team/jimmy-lai.jpg" github="feedthejim" title="Engineering Director, Next.js at Vercel">
- Like many others, Jimmy started programming with the hopes of being able to work in the gaming industry. Fast forward a few years, he somehow decided that React and Javascript were pretty fun and that helping other developers build fast experiences was a more interesting life goal. After starting his career at Meta, working on product infrastructure and (briefly) on React Native, Jimmy now works at Vercel, where he helps his team build Next.js. He sadly does not get much time for video games anymore.
+ Like many others, Jimmy started programming with the hopes of being able to work in the gaming industry. Fast forward a few years, he somehow decided that React and JavaScript were pretty fun and that helping other developers build fast experiences was a more interesting life goal. After starting his career at Meta, working on product infrastructure and (briefly) on React Native, Jimmy now works at Vercel, where he helps his team build Next.js. He sadly does not get much time for video games anymore.
</TeamMember>
<TeamMember name="Seth Webster" permalink="seth-webster" photo="/images/team/seth.jpg" github="sethwebster" twitter="sethwebster" threads="sethwebster" personal="sethwebster.com" title="Executive Director, React Foundation, Chief Developer Evangelist at Expo">
diff --git a/src/content/reference/react-dom/browser.md b/src/content/reference/react-dom/browser.md
new file mode 100644
index 000000000..00c60d37d
--- /dev/null
+++ b/src/content/reference/react-dom/browser.md
@@ -0,0 +1,462 @@
+---
+title: browser
+---
+
+<Intro>
+
+`browser` lets you mark a component as browser-only during server rendering.
+
+```js
+use(browser(reason?))
+```
+
+</Intro>
+
+<InlineToc />
+
+---
+
+## Reference {/*reference*/}
+
+### `browser(reason?)` {/*browser*/}
+
+Call `browser` inside [`use`](/reference/react/use) to mark a component as browser-only during server rendering:
+
+```js
+import { use } from 'react';
+import { browser } from 'react-dom';
+
+function BrowserOnly() {
+ use(browser('This component requires browser APIs.'));
+ return <BrowserContent />;
+}
+```
+
+During server rendering, `use(browser())` stops rendering the component and leaves the closest [`<Suspense>`](/reference/react/Suspense) boundary's fallback in its place. In the browser, `use(browser())` returns `undefined`, so the component renders normally.
+
+[See more examples below.](#usage)
+
+#### Parameters {/*parameters*/}
+
+* **optional** `reason`: A string or function that explains why the content needs to render in the browser. The string or the function's return value becomes the `cause` of the `Error` passed to [`onBrowserBailout`](#reporting-browser-only-rendering-on-the-server). React calls a reason function each time a server renderer encounters the value returned by `browser`, but does not call it in the browser. If creating the reason is expensive, pass a function such as `() => new Error(...)`.
+
+#### Returns {/*returns*/}
+
+`browser` returns an opaque value that you can pass to `use` in a component or use as the reason when [aborting a server render](#aborting-pending-server-rendering-for-the-browser). In the browser, passing this value to `use` returns `undefined`.
+
+#### Caveats {/*caveats*/}
+
+* `use(browser())` must be inside a `<Suspense>` boundary during server rendering. Without one, the server render fails.
+* In a React Server Components app, `use(browser())` must be called from a [Client Component](/reference/rsc/use-client), not a [Server Component](/reference/rsc/server-components).
+* Calling `browser()` by itself has no effect. To mark a component as browser-only, pass the value returned by `browser` to `use`. Do not throw it.
+
+---
+
+## Usage {/*usage*/}
+
+### Rendering content only in the browser {/*rendering-content-only-in-the-browser*/}
+
+Call `browser` inside `use` in a component that should only render in the browser:
+
+You can use this instead of checking `typeof window`, waiting for an [`Effect`](/reference/react/useEffect) to set mounted state, or using a framework option to disable server rendering.
+
+Click **Reload** to see the loading fallback in the initial HTML. After hydration, React displays the draft loaded from `localStorage`.
+
+<Sandpack>
+
+```js src/App.js active
+import { Suspense, use, useState } from 'react';
+import { browser } from 'react-dom';
+
+function SavedDraft() {
+ use(browser('The draft is stored in localStorage.'));
+ const [draft, setDraft] = useState(
+ () => localStorage.getItem('draft') ?? ''
+ );
+
+ function handleChange(event) {
+ const nextDraft = event.target.value;
+ setDraft(nextDraft);
+ localStorage.setItem('draft', nextDraft);
+ }
+
+ return (
+ <label>
+ Draft:
+ <textarea
+ value={draft}
+ onChange={handleChange}
+ rows={4}
+ cols={30}
+ />
+ </label>
+ );
+}
+
+export default function App() {
+ return (
+ <>
+ <h1>Saved draft</h1>
+ <Suspense fallback={<p>Loading draft...</p>}>
+ <SavedDraft />
+ </Suspense>
+ </>
+ );
+}
+```
+
+```js src/Document.js hidden
+import App from './App.js';
+
+export default function Document() {
+ return (
+ <html lang="en">
+ <head>
+ <title>Saved draft
+
+
+
+
+
+
+
+
+ );
+}
+```
+
+```js src/Card.js
+export default function Card({ title }) {
+ return Scroll down
+
+ Scroll up
+ {title}
;
+}
+```
+
+```js src/InView.js
+import {
+ Fragment,
+ useRef,
+ useLayoutEffect,
+} from 'react';
+
+export default function InView({ onChange, children }) {
+ const fragmentRef = useRef(null);
+
+ useLayoutEffect(() => {
+ const visibleElements = new Set();
+ const observer = new IntersectionObserver(
+ (entries) => {
+ entries.forEach(e => {
+ if (e.isIntersecting) {
+ visibleElements.add(e.target);
+ } else {
+ visibleElements.delete(e.target);
+ }
+ });
+ onChange(visibleElements.size > 0);
+ }
+ );
+ const fragmentInstance = fragmentRef.current;
+ fragmentInstance.observeUsing(observer);
+ return () => {
+ fragmentInstance.unobserveUsing(observer);
+ };
+ }, [onChange]);
+
+ return (
+ {timeZone}
+} + +export default function App() { + return ( + <> +Your current time zone is:
+{defaultValue}
; + } + + use(browser()); + const localTimeZone = new Intl.DateTimeFormat().resolvedOptions().timeZone; + + return{localTimeZone}
+} + +export default function App() { + return ( + <> +
+
+
+ The event's time zone is:
++ +
+
+
+
+
+ );
+}
+```
+
+
+```js src/Document.js hidden
+import App from './App.js';
+
+export default function Document() {
+ return (
+
+
+ Your current time zone is:
+