Merge branch 'main' into sync-9aa2e366

.github/workflows/analyze.yml

@@ -11,18 +11,18 @@ jobs:
   analyze:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Set up node
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v3
         with:
           node-version: '20.x'
 
       - name: Install dependencies
         uses: bahmutov/[email protected]
 
       - name: Restore next build
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: restore-build-cache
         env:
           cache-name: cache-next-build
@@ -41,7 +41,7 @@ jobs:
         run: npx -p [email protected] report
 
       - name: Upload bundle
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           path: .next/analyze/__bundle_analysis.json
           name: bundle_analysis.json
@@ -73,7 +73,7 @@ jobs:
         run: ls -laR .next/analyze/base && npx -p nextjs-bundle-analysis compare
 
       - name: Upload analysis comment
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: analysis_comment.txt
           path: .next/analyze/__bundle_analysis_comment.txt
@@ -82,7 +82,7 @@ jobs:
         run: echo ${{ github.event.number }} > ./pr_number
 
       - name: Upload PR number
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: pr_number
           path: ./pr_number

package.json

@@ -24,8 +24,8 @@
   },
   "dependencies": {
     "@codesandbox/sandpack-react": "2.13.5",
-    "@docsearch/css": "3.0.0-alpha.41",
-    "@docsearch/react": "3.0.0-alpha.41",
+    "@docsearch/css": "^3.6.1",
+    "@docsearch/react": "^3.6.1",
     "@headlessui/react": "^1.7.0",
     "@radix-ui/react-context-menu": "^2.1.5",
     "body-scroll-lock": "^3.1.3",

public/rss.xml

@@ -4,9 +4,9 @@
         <description><![CDATA[This blog is the official source for the updates from the React team. Anything important, including release notes or deprecation notices, will be posted here first.]]></description>
         <link>https://react.dev/</link>
         <generator>react.dev rss module</generator>
-        <lastBuildDate>Tue, 20 Aug 2024 08:06:26 GMT</lastBuildDate>
+        <lastBuildDate>Tue, 15 Oct 2024 17:49:58 GMT</lastBuildDate>
         <atom:link href="https://react.dev/rss.xml" rel="self" type="application/rss+xml"/>
-        <pubDate>Tue, 20 Aug 2024 08:06:26 GMT</pubDate>
+        <pubDate>Tue, 15 Oct 2024 17:49:58 GMT</pubDate>
         <language><![CDATA[en]]></language>
         <item>
             <title><![CDATA[React Conf 2024 Recap]]></title>

src/components/Layout/Footer.tsx

@@ -283,7 +283,7 @@ export function Footer() {
           <div
             className="text-xs text-left rtl:text-right mt-2 pe-0.5"
             dir="ltr">
-            &copy;{new Date().getFullYear()}
+            Copyright &copy; Meta Platforms, Inc
           </div>
           <div
             className="uwu-visible text-xs cursor-pointer hover:text-link hover:dark:text-link-dark hover:underline"

src/components/Search.tsx

@@ -94,7 +94,17 @@ export function Search({
   onOpen,
   onClose,
   searchParameters = {
-    hitsPerPage: 5,
+    hitsPerPage: 30,
+    attributesToHighlight: [
+      'hierarchy.lvl0',
+      'hierarchy.lvl1',
+      'hierarchy.lvl2',
+      'hierarchy.lvl3',
+      'hierarchy.lvl4',
+      'hierarchy.lvl5',
+      'hierarchy.lvl6',
+      'content',
+    ],
   },
 }: SearchProps) {
   useDocSearchKeyboardEvents({isOpen, onOpen, onClose});

src/content/community/conferences.md

@@ -10,81 +10,6 @@ Do you know of a local React.js conference? Add it here! (Please keep the list c
 
 ## Upcoming Conferences {/*upcoming-conferences*/}
 
-<<<<<<< HEAD
-### React Paris 2024 {/*react-paris-2024*/}
-March 22, 2024. In-person in Paris, France + Remote (hybrid)
-
-[Website](https://react.paris/) - [Twitter](https://twitter.com/BeJS_) - [LinkedIn](https://www.linkedin.com/events/7150816372074192900/comments/)
-
-### Epic Web Conf 2024 {/*epic-web-2024*/}
-April 10 - 11, 2024. In-person in Park City, UT, USA
-
-[Website](https://www.epicweb.dev/conf) - [YouTube](https://www.youtube.com/@EpicWebDev)
-
-### React Miami 2024 {/*react-miami-2024*/}
-April 19 - 20, 2024. In-person in Miami, FL, USA
-
-[Website](https://reactmiami.com/) - [Twitter](https://twitter.com/ReactMiamiConf)
-
-### React Connection 2024 {/*react-connection-2024*/}
-April 22, 2024. In-person in Paris, France 
-
-[Website](https://reactconnection.io/) - [Twitter](https://twitter.com/ReactConn)
-
-### React Native Connection 2024 {/*react-native-connection-2024*/}
-April 23, 2024. In-person in Paris, France 
-
-[Website](https://reactnativeconnection.io/) - [Twitter](https://twitter.com/ReactNativeConn)
-
-### React Conf 2024 {/*react-conf-2024*/}
-May 15 - 16, 2024. In-person in Henderson, NV, USA + remote
-
-[Website](https://conf.react.dev) - [Twitter](https://twitter.com/reactjs)
-
-### App.js Conf 2024 {/*appjs-conf-2024*/}
-May 22 - 24, 2024. In-person in Kraków, Poland + remote
-
-[Website](https://appjs.co) - [Twitter](https://twitter.com/appjsconf)
-
-
-### Frontend Nation 2024 {/*frontend-nation-2024*/}
-June 4 - 7, 2024. Online
-
-[Website](https://frontendnation.com/) - [Twitter](https://twitter.com/frontendnation)
-
-### React Summit 2024 {/*react-summit-2024*/}
-June 14 & 18, 2024. In-person in Amsterdam, Netherlands + remote (hybrid event)
-
-[Website](https://reactsummit.com/) - [Twitter](https://twitter.com/reactsummit) - [Videos](https://portal.gitnation.org/)
-
-### Render(ATL) 2024 🍑 {/*renderatl-2024-*/}
-June 12 - June 14, 2024. Atlanta, GA, USA
-
-[Website](https://renderatl.com) - [Discord](https://www.renderatl.com/discord) - [Twitter](https://twitter.com/renderATL) - [Instagram](https://www.instagram.com/renderatl/) - [Facebook](https://www.facebook.com/renderatl/) - [LinkedIn](https://www.linkedin.com/company/renderatl) - [Podcast](https://www.renderatl.com/culture-and-code#/)
-
-### React Norway 2024 {/*react-norway-2024*/}
-June 14, 2024. In-person at Farris Bad Hotel in Larvik, Norway and online (hybrid event).
-
-[Website](https://reactnorway.com/) - [Twitter](https://twitter.com/ReactNorway)
-
-
-### React Nexus 2024 {/*react-nexus-2024*/}
-July 04 & 05, 2024. Bangalore, India (In-person event)
-
-[Website](https://reactnexus.com/) - [Twitter](https://twitter.com/ReactNexus) - [Linkedin](https://www.linkedin.com/company/react-nexus) - [YouTube](https://www.youtube.com/reactify_in)
-
-### Chain React 2024 {/*chain-react-2024*/}
-July 17-19, 2024. In-person in Portland, OR, USA
-
-[Website](https://chainreactconf.com) - [Twitter](https://twitter.com/ChainReactConf)
-
-### The Geek Conf 2024 {/*the-geek-conf-2024*/}
-July 25, 2024. In-person in Berlin, Germany + remote (hybrid event)
-
-[Website](https://thegeekconf.com) - [Twitter](https://twitter.com/thegeekconf)
-
-=======
->>>>>>> 9aa2e3668da290f92f8997a25f28bd3f58b2a26d
 ### React Universe Conf 2024 {/*react-universe-conf-2024*/}
 September 5-6, 2024. Wrocław, Poland.
 
@@ -105,20 +30,26 @@ October 17 - 19, 2024. In-person in Goa, India (hybrid event) + Oct 15 2024 - re
 
 [Website](https://www.reactindia.io) - [Twitter](https://twitter.com/react_india) - [Facebook](https://www.facebook.com/ReactJSIndia) - [Youtube](https://www.youtube.com/channel/UCaFbHCBkPvVv1bWs_jwYt3w)
 
-<<<<<<< HEAD
-## Past Conferences {/*past-conferences*/}
-
-=======
 ### React Brussels 2024 {/*react-brussels-2024*/}
 October 18, 2024. In-person in Brussels, Belgium (hybrid event)
 
 [Website](https://www.react.brussels/) - [Twitter](https://x.com/BrusselsReact)
 
+### reactjsday 2024 {/*reactjsday-2024*/}
+October 25, 2024. In-person in Verona, Italy + online (hybrid event)
+
+[Website](https://2024.reactjsday.it/) - [Twitter](https://x.com/reactjsday) - [Facebook](https://www.facebook.com/GrUSP/) - [YouTube](https://www.youtube.com/c/grusp)
+
 ### React Advanced London 2024 {/*react-advanced-london-2024*/}
 October 25 & 28, 2024. In-person in London, UK + online (hybrid event)
 
 [Website](https://reactadvanced.com/) - [Twitter](https://x.com/reactadvanced)
 
+### React Native London Conf 2024 {/*react-native-london-2024*/}
+November 14 & 15, 2024. In-person in London, UK
+
+[Website](https://reactnativelondon.co.uk/) - [Twitter](https://x.com/RNLConf)
+
 ### React Summit US 2024 {/*react-summit-us-2024*/}
 November 19 & 22, 2024. In-person in New York, USA + online (hybrid event)
 
@@ -171,7 +102,6 @@ June 12 - June 14, 2024. Atlanta, GA, USA
 
 [Website](https://renderatl.com) - [Discord](https://www.renderatl.com/discord) - [Twitter](https://twitter.com/renderATL) - [Instagram](https://www.instagram.com/renderatl/) - [Facebook](https://www.facebook.com/renderatl/) - [LinkedIn](https://www.linkedin.com/company/renderatl) - [Podcast](https://www.renderatl.com/culture-and-code#/)
 
->>>>>>> 9aa2e3668da290f92f8997a25f28bd3f58b2a26d
 ### Frontend Nation 2024 {/*frontend-nation-2024*/}
 June 4 - 7, 2024. Online
 
@@ -205,7 +135,7 @@ April 10 - 11, 2024. In-person in Park City, UT, USA
 ### React Paris 2024 {/*react-paris-2024*/}
 March 22, 2024. In-person in Paris, France + Remote (hybrid)
 
-[Website](https://react.paris/) - [Twitter](https://twitter.com/BeJS_) - [LinkedIn](https://www.linkedin.com/events/7150816372074192900/comments/)
+[Website](https://react.paris/) - [Twitter](https://twitter.com/BeJS_) - [LinkedIn](https://www.linkedin.com/events/7150816372074192900/comments/) - [Videos](https://www.youtube.com/playlist?list=PL53Z0yyYnpWhUzgvr2Nys3kZBBLcY0TA7)
 
 ### React Day Berlin 2023 {/*react-day-berlin-2023*/}
 December 8 & 12, 2023. In-person in Berlin, Germany + remote first interactivity (hybrid event)

src/content/learn/you-might-not-need-an-effect.md

@@ -408,7 +408,7 @@ function Game() {
 
 There are two problems with this code.
 
-First problem is that it is very inefficient: the component (and its children) have to re-render between each `set` call in the chain. In the example above, in the worst case (`setCard` → render → `setGoldCardCount` → render → `setRound` → render → `setIsGameOver` → render) there are three unnecessary re-renders of the tree below.
+The first problem is that it is very inefficient: the component (and its children) have to re-render between each `set` call in the chain. In the example above, in the worst case (`setCard` → render → `setGoldCardCount` → render → `setRound` → render → `setIsGameOver` → render) there are three unnecessary re-renders of the tree below.
 
 The second problem is that even if it weren't slow, as your code evolves, you will run into cases where the "chain" you wrote doesn't fit the new requirements. Imagine you are adding a way to step through the history of the game moves. You'd do it by updating each state variable to a value from the past. However, setting the `card` state to a value from the past would trigger the Effect chain again and change the data you're showing. Such code is often rigid and fragile.
 

src/content/reference/react/useCallback.md

@@ -711,7 +711,7 @@ function ChatRoom({ roomId }) {
 
   useEffect(() => {
     const options = createOptions();
-    const connection = createConnection();
+    const connection = createConnection(options);
     connection.connect();
     // ...
 ```
@@ -722,7 +722,7 @@ This creates a problem. [Every reactive value must be declared as a dependency o
 ```js {6}
   useEffect(() => {
     const options = createOptions();
-    const connection = createConnection();
+    const connection = createConnection(options);
     connection.connect();
     return () => connection.disconnect();
   }, [createOptions]); // 🔴 Problem: This dependency changes on every render
@@ -744,7 +744,7 @@ function ChatRoom({ roomId }) {
 
   useEffect(() => {
     const options = createOptions();
-    const connection = createConnection();
+    const connection = createConnection(options);
     connection.connect();
     return () => connection.disconnect();
   }, [createOptions]); // ✅ Only changes when createOptions changes
@@ -766,7 +766,7 @@ function ChatRoom({ roomId }) {
     }
 
     const options = createOptions();
-    const connection = createConnection();
+    const connection = createConnection(options);
     connection.connect();
     return () => connection.disconnect();
   }, [roomId]); // ✅ Only changes when roomId changes

src/content/reference/react/useMemo.md

@@ -1056,6 +1056,83 @@ Keep in mind that you need to run React in production mode, disable [React Devel
 
 ---
 
+### Preventing an Effect from firing too often {/*preventing-an-effect-from-firing-too-often*/}
+
+Sometimes, you might want to use a value inside an [Effect:](/learn/synchronizing-with-effects)
+
+```js {4-7,10}
+function ChatRoom({ roomId }) {
+  const [message, setMessage] = useState('');
+
+  const options = {
+    serverUrl: 'https://localhost:1234',
+    roomId: roomId
+  }
+
+  useEffect(() => {
+    const connection = createConnection(options);
+    connection.connect();
+    // ...
+```
+
+This creates a problem. [Every reactive value must be declared as a dependency of your Effect.](/learn/lifecycle-of-reactive-effects#react-verifies-that-you-specified-every-reactive-value-as-a-dependency) However, if you declare `options` as a dependency, it will cause your Effect to constantly reconnect to the chat room:
+
+
+```js {5}
+  useEffect(() => {
+    const connection = createConnection(options);
+    connection.connect();
+    return () => connection.disconnect();
+  }, [options]); // 🔴 Problem: This dependency changes on every render
+  // ...
+```
+
+To solve this, you can wrap the object you need to call from an Effect in `useMemo`:
+
+```js {4-9,16}
+function ChatRoom({ roomId }) {
+  const [message, setMessage] = useState('');
+
+  const options = useMemo(() => {
+    return {
+      serverUrl: 'https://localhost:1234',
+      roomId: roomId
+    };
+  }, [roomId]); // ✅ Only changes when roomId changes
+
+  useEffect(() => {
+    const options = createOptions();
+    const connection = createConnection(options);
+    connection.connect();
+    return () => connection.disconnect();
+  }, [options]); // ✅ Only changes when createOptions changes
+  // ...
+```
+
+This ensures that the `options` object is the same between re-renders if `useMemo` returns the cached object.
+
+However, since `useMemo` is performance optimization, not a semantic guarantee, React may throw away the cached value if [there is a specific reason to do that](#caveats). This will also cause the effect to re-fire, **so it's even better to remove the need for a function dependency** by moving your object *inside* the Effect:
+
+```js {5-8,13}
+function ChatRoom({ roomId }) {
+  const [message, setMessage] = useState('');
+
+  useEffect(() => {
+    const options = { // ✅ No need for useMemo or object dependencies!
+      serverUrl: 'https://localhost:1234',
+      roomId: roomId
+    }
+
+    const connection = createConnection(options);
+    connection.connect();
+    return () => connection.disconnect();
+  }, [roomId]); // ✅ Only changes when roomId changes
+  // ...
+```
+
+Now your code is simpler and doesn't need `useMemo`. [Learn more about removing Effect dependencies.](/learn/removing-effect-dependencies#move-dynamic-objects-and-functions-inside-your-effect)
+
+
 ### Memoizing a dependency of another Hook {/*memoizing-a-dependency-of-another-hook*/}
 
 Suppose you have a calculation that depends on an object created directly in the component body:

src/content/reference/react/useReducer.md

@@ -52,6 +52,7 @@ function MyComponent() {
 #### Caveats {/*caveats*/}
 
 * `useReducer` is a Hook, so you can only call it **at the top level of your component** or your own Hooks. You can't call it inside loops or conditions. If you need that, extract a new component and move the state into it.
+* The `dispatch` function has a stable identity, so you will often see it omitted from effect dependencies, but including it will not cause the effect to fire. If the linter lets you omit a dependency without errors, it is safe to do. [Learn more about removing Effect dependencies.](/learn/removing-effect-dependencies#move-dynamic-objects-and-functions-inside-your-effect)
 * In Strict Mode, React will **call your reducer and initializer twice** in order to [help you find accidental impurities.](#my-reducer-or-initializer-function-runs-twice) This is development-only behavior and does not affect production. If your reducer and initializer are pure (as they should be), this should not affect your logic. The result from one of the calls is ignored.
 
 ---

src/content/reference/react/useState.md

@@ -85,6 +85,8 @@ function handleClick() {
 
 * React [batches state updates.](/learn/queueing-a-series-of-state-updates) It updates the screen **after all the event handlers have run** and have called their `set` functions. This prevents multiple re-renders during a single event. In the rare case that you need to force React to update the screen earlier, for example to access the DOM, you can use [`flushSync`.](/reference/react-dom/flushSync)
 
+* The `set` function has a stable identity, so you will often see it omitted from effect dependencies, but including it will not cause the effect to fire. If the linter lets you omit a dependency without errors, it is safe to do. [Learn more about removing Effect dependencies.](/learn/removing-effect-dependencies#move-dynamic-objects-and-functions-inside-your-effect)
+
 * Calling the `set` function *during rendering* is only allowed from within the currently rendering component. React will discard its output and immediately attempt to render it again with the new state. This pattern is rarely needed, but you can use it to **store information from the previous renders**. [See an example below.](#storing-information-from-previous-renders)
 
 * In Strict Mode, React will **call your updater function twice** in order to [help you find accidental impurities.](#my-initializer-or-updater-function-runs-twice) This is development-only behavior and does not affect production. If your updater function is pure (as it should be), this should not affect the behavior. The result from one of the calls will be ignored.

src/content/reference/react/useTransition.md

@@ -80,6 +80,8 @@ function TabContainer() {
 
 * The function you pass to `startTransition` must be synchronous. React immediately executes this function, marking all state updates that happen while it executes as Transitions. If you try to perform more state updates later (for example, in a timeout), they won't be marked as Transitions.
 
+* The `startTransition` function has a stable identity, so you will often see it omitted from effect dependencies, but including it will not cause the effect to fire. If the linter lets you omit a dependency without errors, it is safe to do. [Learn more about removing Effect dependencies.](/learn/removing-effect-dependencies#move-dynamic-objects-and-functions-inside-your-effect)
+
 * A state update marked as a Transition will be interrupted by other state updates. For example, if you update a chart component inside a Transition, but then start typing into an input while the chart is in the middle of a re-render, React will restart the rendering work on the chart component after handling the input update.
 
 * Transition updates can't be used to control text inputs.

src/content/reference/rsc/server-actions.md

@@ -53,7 +53,7 @@ When React renders the `EmptyNote` Server Component, it will create a reference
 export default function Button({onClick}) { 
   console.log(onClick); 
   // {$$typeof: Symbol.for("react.server.reference"), $$id: 'createNoteAction'}
-  return <button onClick={onClick}>Create Empty Note</button>
+  return <button onClick={() => onClick()}>Create Empty Note</button>
 }
 ```