Merge branch 'reactjs:main' into master

Author: ChuYang-FE

public/images/blog/react-labs-april-2025/flip.gif

@@ -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.png

@@ -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}

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

@@ -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]"
           />
         )}

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

@@ -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: '陷阱',
     Icon: IconPitfall,

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

@@ -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/Icon/IconExperimental.tsx

@@ -8,10 +8,12 @@ import {H1} from './MDX/Heading';
 import type {RouteTag, RouteItem} from './Layout/getRouteMeta';
 import * as React from 'react';
 import {IconCanary} from './Icon/IconCanary';
+import {IconExperimental} from './Icon/IconExperimental';
 
 interface PageHeadingProps {
   title: string;
-  canary?: boolean;
+  version?: 'experimental' | 'canary';
+  experimental?: boolean;
   status?: string;
   description?: string;
   tags?: RouteTag[];
@@ -21,19 +23,26 @@ interface PageHeadingProps {
 function PageHeading({
   title,
   status,
-  canary,
+  version,
   tags = [],
   breadcrumbs,
 }: PageHeadingProps) {
+  console.log('version', version);
   return (
     <div className="px-5 sm:px-12 pt-3.5">
       <div className="max-w-4xl ms-0 2xl:mx-auto">
         {breadcrumbs ? <Breadcrumbs breadcrumbs={breadcrumbs} /> : null}
         <H1 className="mt-0 text-primary dark:text-primary-dark -mx-.5 break-words">
           {title}
-          {canary && (
+          {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-4 mt-1 text-gray-50 dark:text-gray-40 inline-block w-6 h-6 align-[-1px]"
+            />
+          )}
+          {version === 'experimental' && (
+            <IconExperimental
+              title=" - This feature is available in the latest Experimental version of React"
               className="ms-4 mt-1 text-gray-50 dark:text-gray-40 inline-block w-6 h-6 align-[-1px]"
             />
           )}

src/components/Layout/Page.tsx

@@ -57,23 +57,23 @@ During the RC period, we encourage all React users to try the compiler and provi
 As noted in the Beta announcement, React Compiler is compatible with React 17 and up. If you are not yet on React 19, you can use React Compiler by specifying a minimum target in your compiler config, and adding `react-compiler-runtime` as a dependency. You can find docs on this [here](https://react.dev/learn/react-compiler#using-react-compiler-with-react-17-or-18).
 
 ## Migrating from eslint-plugin-react-compiler to eslint-plugin-react-hooks {/*migrating-from-eslint-plugin-react-compiler-to-eslint-plugin-react-hooks*/}
-If you have already installed eslint-plugin-react-compiler, you can now remove it and use `eslint-plugin-react-hooks@^6.0.0-rc.1`. Many thanks to [@michaelfaith](https://bsky.app/profile/michael.faith) for contributing to this improvement!
+If you have already installed eslint-plugin-react-compiler, you can now remove it and use `eslint-plugin-react-hooks@6.0.0-rc.1`. Many thanks to [@michaelfaith](https://bsky.app/profile/michael.faith) for contributing to this improvement!
 
 To install:
 
 npm
 <TerminalBlock>
-{`npm install --save-dev eslint-plugin-react-hooks@^6.0.0-rc.1`}
+{`npm install --save-dev eslint-plugin-react-hooks@6.0.0-rc.1`}
 </TerminalBlock>
 
 pnpm
 <TerminalBlock>
-{`pnpm add --save-dev eslint-plugin-react-hooks@^6.0.0-rc.1`}
+{`pnpm add --save-dev eslint-plugin-react-hooks@6.0.0-rc.1`}
 </TerminalBlock>
 
 yarn
 <TerminalBlock>
-{`yarn add --dev eslint-plugin-react-hooks@^6.0.0-rc.1`}
+{`yarn add --dev eslint-plugin-react-hooks@6.0.0-rc.1`}
 </TerminalBlock>
 
 ```js
@@ -89,14 +89,16 @@ export default [
 ];
 ```
 
+To enable the React Compiler rule, add `'react-hooks/react-compiler': 'error'` to your ESLint configuration.
+
 The linter does not require the compiler to be installed, so there's no risk in upgrading eslint-plugin-react-hooks. We recommend everyone upgrade today.
 
 ## swc support (experimental) {/*swc-support-experimental*/}
 React Compiler can be installed across [several build tools](/learn/react-compiler#installation) such as Babel, Vite, and Rsbuild.
 
-In addition to those tools, we have been collaborating with Kang Dongyoong ([@kdy1dev](https://x.com/kdy1dev)) from the [swc](https://swc.rs/) team on adding additional support for React Compiler as an swc plugin. As part of the RC release, you can now integrate the compiler into your [Next.js app with swc](https://nextjs.org/docs/app/api-reference/config/next-config-js/reactCompiler) instead of Babel.
+In addition to those tools, we have been collaborating with Kang Dongyoon ([@kdy1dev](https://x.com/kdy1dev)) from the [swc](https://swc.rs/) team on adding additional support for React Compiler as an swc plugin. While this work isn't done, Next.js build performance should now be considerably faster when the [React Compiler is enabled in your Next.js app](https://nextjs.org/docs/app/api-reference/config/next-config-js/reactCompiler).
 
-Next.js users can upgrade to [15.3.1](https://github.com/vercel/next.js/releases/tag/v15.3.1) or greater to try this out. If you have already enabled the compiler in your Next.js's config, swc support will be enabled automatically.
+We recommend using Next.js [15.3.1](https://github.com/vercel/next.js/releases/tag/v15.3.1) or greater to get the best build performance.
 
 Vite users can continue to use [vite-plugin-react](https://github.com/vitejs/vite-plugin-react) to enable the compiler, by adding it as a [Babel plugin](https://react.dev/learn/react-compiler#usage-with-vite). We are also working with the [oxc](https://oxc.rs/) team to [add support for the compiler](https://github.com/oxc-project/oxc/issues/10048). Once [rolldown](https://github.com/rolldown/rolldown) is officially released and supported in Vite and oxc support is added for React Compiler, we'll update the docs with information on how to migrate.