Merge pull request #839 from reactjs/sync-3ee3a60a

Sync with react.dev @ 3ee3a60

Author: honey32

.github/workflows/discord_notify.yml

@@ -1,7 +1,7 @@
 name: Discord Notify
 
 on:
-  pull_request:
+  pull_request_target:
     types: [opened, ready_for_review]
 
 permissions: {}
@@ -14,7 +14,6 @@ jobs:
       contents: read
     with:
       actor: ${{ github.event.pull_request.user.login }}
-      is_remote: true
 
   notify:
     if: ${{ needs.check_maintainer.outputs.is_core_team == 'true' }}

.github/workflows/label_core_team_prs.yml

@@ -1,7 +1,7 @@
 name: Label Core Team PRs
 
 on:
-  pull_request:
+  pull_request_target:
 
 permissions: {}
 
@@ -18,7 +18,6 @@ jobs:
       contents: read
     with:
       actor: ${{ github.event.pull_request.user.login }}
-      is_remote: true
 
   label:
     if: ${{ needs.check_maintainer.outputs.is_core_team == 'true' }}

postcss.config.js

@@ -17,4 +17,4 @@ module.exports = {
       },
     },
   },
-}
+};

public/fonts/Source-Code-Pro-Bold.woff2

@@ -4,12 +4,14 @@
 
 // Do not delete or move this file.
 // Many fiddles reference it so we have to keep it here.
-(function() {
+(function () {
   var tag = document.querySelector(
     'script[type="application/javascript;version=1.7"]'
   );
   if (!tag || tag.textContent.indexOf('window.onload=function(){') !== -1) {
-    alert('Bad JSFiddle configuration, please fork the original React JSFiddle');
+    alert(
+      'Bad JSFiddle configuration, please fork the original React JSFiddle'
+    );
   }
   tag.setAttribute('type', 'text/babel');
   tag.textContent = tag.textContent.replace(/^\/\/<!\[CDATA\[/, '');

public/fonts/Source-Code-Pro-Regular.woff2

@@ -4,12 +4,14 @@
 
 // Do not delete or move this file.
 // Many fiddles reference it so we have to keep it here.
-(function() {
+(function () {
   var tag = document.querySelector(
     'script[type="application/javascript;version=1.7"]'
   );
   if (!tag || tag.textContent.indexOf('window.onload=function(){') !== -1) {
-    alert('Bad JSFiddle configuration, please fork the original React JSFiddle');
+    alert(
+      'Bad JSFiddle configuration, please fork the original React JSFiddle'
+    );
   }
   tag.setAttribute('type', 'text/jsx;harmony=true');
   tag.textContent = tag.textContent.replace(/^\/\/<!\[CDATA\[/, '');

public/images/blog/react-labs-april-2025/perf_tracks.png

@@ -2,10 +2,10 @@ const fs = require('fs');
 
 module.exports = function walk(dir) {
   let results = [];
-  /** 
+  /**
    * If the param is a directory we can return the file
    */
-  if(dir.includes('md')){
+  if (dir.includes('md')) {
     return [dir];
   }
   const list = fs.readdirSync(dir);

public/images/blog/react-labs-april-2025/perf_tracks.webp

@@ -1,12 +1,12 @@
 const validateHeaderIds = require('./headingIDHelpers/validateHeadingIDs');
 const generateHeadingIds = require('./headingIDHelpers/generateHeadingIDs');
 
-/** 
+/**
  * yarn lint-heading-ids --> Checks all files and causes an error if heading ID is missing
  * yarn lint-heading-ids --fix --> Fixes all markdown file's heading IDs
  * yarn lint-heading-ids path/to/markdown.md --> Checks that particular file for missing heading ID (path can denote a directory or particular file)
  * yarn lint-heading-ids --fix path/to/markdown.md --> Fixes that particular file's markdown IDs (path can denote a directory or particular file)
-*/
+ */
 
 const markdownPaths = process.argv.slice(2);
 if (markdownPaths.includes('--fix')) {

public/images/blog/react-labs-april-2025/perf_tracks_dark.png

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ */
+
+import {memo} from 'react';
+
+export const IconExperimental = memo<
+  JSX.IntrinsicElements['svg'] & {title?: string; size?: 's' | 'md'}
+>(function IconCanary(
+  {className, title, size} = {
+    className: undefined,
+    title: undefined,
+    size: 'md',
+  }
+) {
+  return (
+    <svg
+      className={className}
+      width={size === 's' ? '12px' : '20px'}
+      height={size === 's' ? '12px' : '20px'}
+      viewBox="0 0 20 20"
+      version="1.1"
+      xmlns="http://www.w3.org/2000/svg">
+      {title && <title>{title}</title>}
+      <g stroke="none" strokeWidth="1" fill="none" fillRule="evenodd">
+        <g
+          id="noun-labs-1201738-(2)"
+          transform="translate(2, 0)"
+          fill="currentColor"
+          fillRule="nonzero">
+          <path
+            d="M10.2865804,5.55665262 L10.2865804,2.22331605 L10.8591544,2.22331605 C11.0103911,2.22244799 11.1551447,2.16342155 11.2617505,2.05914367 C11.3684534,1.95486857 11.4282767,1.81370176 11.4282767,1.66667106 L11.4282767,0.556642208 C11.4282767,0.40907262 11.3678934,0.26747526 11.2605218,0.16308627 C11.1531503,0.0587028348 11.0074938,0 10.8556998,0 L5.14338868,0 C4.9915947,0 4.84594391,0.0587028348 4.73856664,0.16308627 C4.63119507,0.267469704 4.57081178,0.40907262 4.57081178,0.556642208 L4.57081178,1.66667106 C4.57081178,1.81434899 4.63119507,1.95594912 4.73856664,2.06033811 C4.8459382,2.16472155 4.9915947,2.22331605 5.14338868,2.22331605 L5.71596273,2.22331605 L5.71596273,5.55665262 C5.71596273,8.38665538 2.97295619,9.88999017 0.651686904,15.5566623 C-0.0957823782,17.360053 -2.00560068,20 7.99951567,20 C18.004632,20 16.0948137,17.3600252 15.3507732,15.5566623 C13.0124432,9.88999017 10.2865804,8.38665538 10.2865804,5.55665262 Z M9.89570197,10.709991 C10.0921412,10.709991 10.2805515,10.7858383 10.4193876,10.9209301 C10.5583466,11.0559135 10.6363652,11.2390693 10.6363652,11.4300417 C10.6363652,11.6210141 10.5583466,11.8040698 10.4193876,11.9391533 C10.2805401,12.0741367 10.0921412,12.1499813 9.89570197,12.1499813 C9.6992627,12.1499813 9.51096673,12.074134 9.37201631,11.9391533 C9.23316875,11.8040615 9.15515307,11.6210141 9.15515307,11.4300417 C9.15515307,11.2390693 9.2331716,11.0559024 9.37201631,10.9209301 C9.57264221,10.7258996 9.61239426,10.709991 9.89570197,10.709991 Z M8.98919546,9.04212824 C9.09790709,9.14792278 9.15884755,9.29158681 9.1585213,9.44110085 C9.15829001,9.59073155 9.09678989,9.73407335 8.98763252,9.83954568 C8.87847514,9.945018 8.73069852,10.0039347 8.57678157,10.0033977 C8.42286747,10.0027392 8.27565088,9.94273467 8.16727355,9.83639845 C8.05900765,9.73006224 7.99873866,9.58628988 7.99963013,9.43664806 C8.00052304,9.28788403 8.0620221,9.14542556 8.17051087,9.04048101 C8.27911107,8.93555591 8.42599335,8.87663641 8.57913312,8.87663641 C8.73291864,8.87665585 8.88047525,8.93622535 8.98919546,9.04212824 Z M7.99965585,17.9999981 C4.91377349,17.9999981 3.29882839,17.7332867 2.51364277,17.4999976 C2.37780966,17.4476975 2.26954376,17.3439641 2.21396931,17.2125528 C2.15838628,17.0811499 2.16006066,16.9334692 2.21876871,16.8033858 C2.6144474,15.5921346 3.14916224,14.4280501 3.81316983,13.3333824 C5.980145,9.82337899 8.22941036,13.8867718 10.0980836,13.8867718 C11.9666996,13.8867718 11.4695868,12.1534924 12.1827971,13.3333824 C12.8511505,14.4269112 13.3916656,15.5896902 13.794259,16.8000524 C13.8533022,16.9322137 13.8537479,17.0822749 13.7952635,17.2147751 C13.7368889,17.3472613 13.6248314,17.4504531 13.4856467,17.5000531 C12.6833967,17.7332867 11.0855382,17.9999981 7.99965585,17.9999981 Z"
+            id="Shape"></path>
+        </g>
+      </g>
+    </svg>
+  );
+});

public/images/blog/react-labs-april-2025/perf_tracks_dark.webp

@@ -901,7 +901,8 @@ function ExampleLayout({
           </div>
           <div
             ref={contentRef}
-            className="relative mt-0 lg:-my-20 w-full p-2.5 xs:p-5 lg:p-10 flex grow justify-center">
+            className="relative mt-0 lg:-my-20 w-full p-2.5 xs:p-5 lg:p-10 flex grow justify-center"
+            dir="ltr">
             {right}
             <div
               className={cn(

public/js/jsfiddle-integration-babel.js

@@ -8,7 +8,7 @@ import {useRouter} from 'next/router';
 import {SidebarNav} from './SidebarNav';
 import {Footer} from './Footer';
 import {Toc} from './Toc';
-// import SocialBanner from '../SocialBanner';
+import SocialBanner from '../SocialBanner';
 import {DocsPageFooter} from 'components/DocsFooter';
 import {Seo} from 'components/Seo';
 import PageHeading from 'components/PageHeading';
@@ -31,7 +31,7 @@ interface PageProps {
   meta: {
     title?: string;
     titleForTitleTag?: string;
-    canary?: boolean;
+    version?: 'experimental' | 'canary';
     description?: string;
   };
   section: 'learn' | 'reference' | 'community' | 'blog' | 'home' | 'unknown';
@@ -53,7 +53,7 @@ export function Page({
     routeTree
   );
   const title = meta.title || route?.title || '';
-  const canary = meta.canary || false;
+  const version = meta.version;
   const description = meta.description || route?.description || '';
   const isHomePage = cleanedPath === '/';
   const isBlogIndex = cleanedPath === '/blog';
@@ -70,7 +70,7 @@ export function Page({
           )}>
           <PageHeading
             title={title}
-            canary={canary}
+            version={version}
             description={description}
             tags={route?.tags}
             breadcrumbs={breadcrumbs}
@@ -137,7 +137,7 @@ export function Page({
           />
         </Head>
       )}
-      {/*<SocialBanner />*/}
+      <SocialBanner />
       <TopNav
         section={section}
         routeTree={routeTree}

public/js/jsfiddle-integration.js

@@ -9,14 +9,15 @@ import * as React from 'react';
 import cn from 'classnames';
 import {IconNavArrow} from 'components/Icon/IconNavArrow';
 import {IconCanary} from 'components/Icon/IconCanary';
+import {IconExperimental} from 'components/Icon/IconExperimental';
 import Link from 'next/link';
 
 interface SidebarLinkProps {
   href: string;
   selected?: boolean;
   title: string;
   level: number;
-  version?: 'canary' | 'major';
+  version?: 'canary' | 'major' | 'experimental';
   icon?: React.ReactNode;
   isExpanded?: boolean;
   hideArrow?: boolean;
@@ -84,7 +85,13 @@ export function SidebarLink({
         )}
         {version === 'canary' && (
           <IconCanary
-            title=" - This feature is available in the latest Canary"
+            title=" - This feature is available in the latest Canary version of React"
+            className="ms-1 text-gray-30 dark:text-gray-60 inline-block w-3.5 h-3.5 align-[-3px]"
+          />
+        )}
+        {version === 'experimental' && (
+          <IconExperimental
+            title=" - This feature is available in the latest Experimental version of React"
             className="ms-1 text-gray-30 dark:text-gray-60 inline-block w-3.5 h-3.5 align-[-3px]"
           />
         )}

scripts/headingIDHelpers/walk.js

@@ -69,7 +69,7 @@ function parseQueryString(search: string): Array<string | undefined> {
 }
 
 export default function ErrorDecoder() {
-  const {errorMessage} = useErrorDecoderParams();
+  const {errorMessage, errorCode} = useErrorDecoderParams();
   /** error messages that contain %s require reading location.search */
   const hasParams = errorMessage?.includes('%s');
   const [message, setMessage] = useState<React.ReactNode | null>(() =>
@@ -82,23 +82,28 @@ export default function ErrorDecoder() {
     if (errorMessage == null || !hasParams) {
       return;
     }
+    const args = parseQueryString(window.location.search);
+    let message = errorMessage;
+    if (errorCode === '418') {
+      // Hydration errors have a %s for the diff, but we don't add that to the args for security reasons.
+      message = message.replace(/%s$/, '');
 
-    setMessage(
-      urlify(
-        replaceArgs(
-          errorMessage,
-          parseQueryString(window.location.search),
-          '[missing argument]'
-        )
-      )
-    );
+      // Before React 19.1, the error message didn't have an arg, and was always HTML.
+      if (args.length === 0) {
+        args.push('HTML');
+      } else if (args.length === 1 && args[0] === '') {
+        args[0] = 'HTML';
+      }
+    }
+
+    setMessage(urlify(replaceArgs(message, args, '[missing argument]')));
     setIsReady(true);
-  }, [hasParams, errorMessage]);
+  }, [errorCode, hasParams, errorMessage]);
 
   return (
     <code
       className={cn(
-        'block bg-red-100 text-red-600 py-4 px-6 mt-5 rounded-lg',
+        'whitespace-pre-line block bg-red-100 text-red-600 py-4 px-6 mt-5 rounded-lg',
         isReady ? 'opacity-100' : 'opacity-0'
       )}>
       <b>{message}</b>

scripts/headingIdLinter.js

@@ -16,6 +16,7 @@ type CalloutVariants =
   | 'note'
   | 'wip'
   | 'canary'
+  | 'experimental'
   | 'major'
   | 'rsc';
 
@@ -51,6 +52,15 @@ const variantMap = {
     overlayGradient:
       'linear-gradient(rgba(245, 249, 248, 0), rgba(245, 249, 248, 1)',
   },
+  experimental: {
+    title: 'Experimental Feature',
+    Icon: IconCanary,
+    containerClasses:
+      'bg-green-5 dark:bg-green-60 dark:bg-opacity-20 text-primary dark:text-primary-dark text-lg',
+    textColor: 'text-green-60 dark:text-green-40',
+    overlayGradient:
+      'linear-gradient(rgba(245, 249, 248, 0), rgba(245, 249, 248, 1)',
+  },
   pitfall: {
     title: '落とし穴',
     Icon: IconPitfall,

src/components/Icon/IconExperimental.tsx

@@ -98,6 +98,10 @@ const Canary = ({children}: {children: React.ReactNode}) => (
   <ExpandableCallout type="canary">{children}</ExpandableCallout>
 );
 
+const Experimental = ({children}: {children: React.ReactNode}) => (
+  <ExpandableCallout type="experimental">{children}</ExpandableCallout>
+);
+
 const NextMajor = ({children}: {children: React.ReactNode}) => (
   <ExpandableCallout type="major">{children}</ExpandableCallout>
 );
@@ -120,6 +124,20 @@ const CanaryBadge = ({title}: {title: string}) => (
   </span>
 );
 
+const ExperimentalBadge = ({title}: {title: string}) => (
+  <span
+    title={title}
+    className={
+      'text-base font-display px-1 py-0.5 font-bold bg-gray-10 dark:bg-gray-60 text-gray-60 dark:text-gray-10 rounded'
+    }>
+    <IconCanary
+      size="s"
+      className={'inline me-1 mb-0.5 text-sm text-gray-60 dark:text-gray-10'}
+    />
+    Experimental only
+  </span>
+);
+
 const NextMajorBadge = ({title}: {title: string}) => (
   <span
     title={title}
@@ -508,6 +526,8 @@ export const MDXComponents = {
   MathI,
   Note,
   Canary,
+  Experimental,
+  ExperimentalBadge,
   CanaryBadge,
   NextMajor,
   NextMajorBadge,

src/components/Layout/HomeContent.js

@@ -1,7 +1,7 @@
 export const template = {
   '/src/index.js': {
     hidden: true,
-    code: `import React, { StrictMode } from "react";
+    code: `import { StrictMode } from "react";
 import { createRoot } from "react-dom/client";
 import "./styles.css";
 
@@ -28,8 +28,8 @@ root.render(
           eject: 'react-scripts eject',
         },
         dependencies: {
-          react: '19.0.0-rc-3edc000d-20240926',
-          'react-dom': '19.0.0-rc-3edc000d-20240926',
+          react: '^19.1.0',
+          'react-dom': '^19.1.0',
           'react-scripts': '^5.0.0',
         },
       },