chore: update react and related dependencies to latest versions by TusharThakur04 · Pull Request #7929 · webpack/webpack.js.org

TusharThakur04 · 2026-03-06T17:45:42Z

Closes: #7920
Replaces: #7925

Summary
This PR :

updates React and related dependencies to their latest versions.
removes react-visibility-sensor as it relied on findDOMNode, which was removed in React 19, and replaces it with a ref-based implementation using IntersectionObserver — a native browser API that is more performant and future-proof.
replaces the react-router-dom/server import with react-router, since React Router v7 moved SSR utilities like StaticRouter out of react-router-dom and into the core react-router package. react-router is also added as an explicit dependency.
adds Web Streams API globals (TextEncoder, TextDecoder, TransformStream) to the SSG webpack config, as React Router v7's streaming SSR now depends on these browser-native APIs that weren't required by the previous stack.
guards against undefined helmet context and assets.css during SSR, accounting for subtle behavioral changes in renderToString under React 19.

What kind of change does this PR introduce?
chore

Did you add tests for your changes?
no

Does this PR introduce a breaking change?
no

If relevant, what needs to be documented once your changes are merged or what have you already documented?

Use of AI
i have used sonet 4.6 for conversing and generating refactor code.
i have tested the generated code by myself locally and its working fine.

vercel · 2026-03-06T17:45:47Z

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alexander-akait · 2026-03-06T17:55:21Z

-
  const { helmet } = helmetContext;

+  console.log("helmetContext:", JSON.stringify(helmetContext));


Remove this

alexander-akait · 2026-03-06T17:55:52Z


+  console.log("helmetContext:", JSON.stringify(helmetContext));
+
+  const htmlAttrs = helmet?.htmlAttributes?.toString() ?? "";


it is ai generated code, helmet is always define

alexander-akait · 2026-03-06T17:56:26Z

      "import/extensions": "off",
      "import/default": "off",
      "unicorn/prefer-top-level-await": "off",
+      "react/no-deprecated": "off",


No no, you need to fix it, I clear say no deprecations, remove it and fix problems

this is because of

should i change the documentation?

alexander-akait · 2026-03-06T17:57:56Z

Also it doesn't work, go to http://webpack-js-org-git-fork-tusharthakur04-chore-upda-860284-openjs.vercel.app/ and open dev tools

vendor.84e8b55b5cc3f91e.js:2 Uncaught Error: Minified React error #418; visit https://react.dev/errors/418?args[]=HTML&args[]= for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
    at ma (vendor.84e8b55b5cc3f91e.js:2:493987)
    at is (vendor.84e8b55b5cc3f91e.js:2:543335)
    at cc (vendor.84e8b55b5cc3f91e.js:2:581270)
    at sc (vendor.84e8b55b5cc3f91e.js:2:581198)
    at oc (vendor.84e8b55b5cc3f91e.js:2:581040)
    at Ql (vendor.84e8b55b5cc3f91e.js:2:576466)
    at Lc (vendor.84e8b55b5cc3f91e.js:2:592301)
    at MessagePort.x (vendor.84e8b55b5cc3f91e.js:2:662140)
ma @ vendor.84e8b55b5cc3f91e.js:2
is @ vendor.84e8b55b5cc3f91e.js:2
cc @ vendor.84e8b55b5cc3f91e.js:2
sc @ vendor.84e8b55b5cc3f91e.js:2
oc @ vendor.84e8b55b5cc3f91e.js:2
Ql @ vendor.84e8b55b5cc3f91e.js:2
Lc @ vendor.84e8b55b5cc3f91e.js:2
x @ vendor.84e8b55b5cc3f91e.js:2

alexander-akait · 2026-03-06T17:58:53Z

Anyway looks like site works and the right direction, let's resolve problems above

TusharThakur04 · 2026-03-06T18:01:31Z

build is totally fine, test failing

alexander-akait · 2026-03-06T18:12:01Z

@TusharThakur04 build is not fine, go to site and open dev tools, I provided the error above

TusharThakur04 · 2026-03-06T19:22:21Z

@alexander-akait manual helmet context extraction is no longer needed in react-19

alexander-akait · 2026-03-06T19:27:34Z

 + import App from './App';
-+ ReactDOM.render(<App />, document.getElementById('root'));
+ const root = createRoot(document.getElementById('root'));
+ root.render(<App />);


Why it was changed here? Please use different branches (PRs) for different tasks

@alexander-akait #7929 (comment)

Got it, looks fine for me

alexander-akait · 2026-03-06T20:11:39Z

Still on site:

vendor.84e8b55b5cc3f91e.js:2 Uncaught Error: Minified React error #418; visit https://react.dev/errors/418?args[]=HTML&args[]= for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
    at ma (vendor.84e8b55b5cc3f91e.js:2:493987)
    at is (vendor.84e8b55b5cc3f91e.js:2:543335)
    at cc (vendor.84e8b55b5cc3f91e.js:2:581270)
    at sc (vendor.84e8b55b5cc3f91e.js:2:581198)
    at oc (vendor.84e8b55b5cc3f91e.js:2:581040)
    at Ql (vendor.84e8b55b5cc3f91e.js:2:576466)
    at Lc (vendor.84e8b55b5cc3f91e.js:2:592301)
    at MessagePort.x (vendor.84e8b55b5cc3f91e.js:2:662140)

for debug reasons you can disable minimization and look at the message, fix it and then return minimization

TusharThakur04 · 2026-03-07T01:35:38Z

@alexander-akait cypress tests are working fine locally but failing in ci

alexander-akait · 2026-03-07T10:45:29Z

@TusharThakur04 Failed

mobile-and-404.cy.js 00:03 2 1 1

pr_4435.cy.js 680ms 1 - 1

Looks like we really have such problems, need to investigate

TusharThakur04 · 2026-03-07T10:47:18Z

Site is good now?

alexander-akait · 2026-03-07T11:05:03Z

On the first glace - yes, but we need to fix these errors

… pattern

alexander-akait · 2026-03-08T11:13:41Z

Tests are failed

alexander-akait · 2026-03-08T11:17:44Z

Try to click on links fast, it takes a very long time now

alexander-akait · 2026-03-08T13:48:25Z

          },
+          TextEncoder: require("node:util").TextEncoder,
+          TextDecoder: require("node:util").TextDecoder,
+          TransformStream: require("node:stream/web").TransformStream,


Why just don't use import? You can do the same using import, not need to createRequire

alexander-akait · 2026-03-08T13:50:04Z

+  const [mounted, setMounted] = useState(false);
+
+  useEffect(() => {
+    // eslint-disable-next-line react-hooks/set-state-in-effect


Please, no eslint-disable-next-line

ok, its one more in splash

Please resolve them all

alexander-akait

Looks good, please fix other things

alexander-akait · 2026-03-08T15:04:44Z


 export default function OfflineBanner() {
-  const [online, setOnline] = useState(() =>
-    isClient ? navigator.onLine : true,


Why this check was removed?

alexander-akait · 2026-03-08T15:05:15Z

-    </span>
-  </div>
-</div>
-`;


Can we have the same test, looks like you just remove it, it is not good

alexander-akait · 2026-03-08T15:06:00Z

        ) : null}

-        <div id="md-content">{contentRender}</div>
+        <div id="md-content" suppressHydrationWarning>


is it AI say to use suppressHydrationWarning? I don't think it is a good idea to suppress something

alexander-akait · 2026-03-08T16:29:49Z

Thanks

…ack#7929)

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TusharThakur04 force-pushed the chore/update-react-version branch from d209622 to 1acc3de Compare March 7, 2026 01:34

alexander-akait mentioned this pull request Mar 7, 2026

Upgrade react #7925

Closed

TusharThakur04 added 4 commits March 7, 2026 18:22

chore: update react and related dependencies to latest versions

166efb7

add eslint rule to suppress mdx lint error

bd2f357

remove deprecation rule for mdx and change doc to follow latest react…

cb29aed

… pattern

remove manual context extraction

935eaf8

fix: resolve direct setState in useEffect

f8077c6

vercel Bot deployed to Preview March 7, 2026 23:37 View deployment

fix scroll assertion

1f1732d

vercel Bot deployed to Preview March 8, 2026 00:41 View deployment

resolve code-block cypress test

3ecdc24

vercel Bot deployed to Preview March 8, 2026 01:01 View deployment

fix delay in content loading

38730a0

vercel Bot deployed to Preview March 8, 2026 13:38 View deployment

TusharThakur04 requested a review from alexander-akait March 8, 2026 13:45

alexander-akait reviewed Mar 8, 2026

View reviewed changes

fix eslint suppression and imports

9bc4f19

vercel Bot deployed to Preview March 8, 2026 14:33 View deployment

TusharThakur04 requested a review from alexander-akait March 8, 2026 14:39

alexander-akait reviewed Mar 8, 2026

View reviewed changes

TusharThakur04 added 2 commits March 8, 2026 21:07

restore OfflineBanner test

ffb204f

remove suppressHydrationWarning

1b7fead

vercel Bot deployed to Preview March 8, 2026 16:09 View deployment

alexander-akait approved these changes Mar 8, 2026

View reviewed changes

TusharThakur04 requested a review from alexander-akait March 8, 2026 16:28

alexander-akait merged commit 3bf8c82 into webpack:main Mar 8, 2026
9 checks passed

TusharThakur04 deleted the chore/update-react-version branch March 8, 2026 17:58

TusharThakur04 mentioned this pull request Mar 9, 2026

update react status webpack/docs.webpack.js.org#18

Closed

pranjalisr pushed a commit to pranjalisr/webpack.js.org that referenced this pull request Mar 12, 2026

chore: update react and related dependencies to latest versions (webp…

2281185

…ack#7929)


		const { helmet } = helmetContext;

		console.log("helmetContext:", JSON.stringify(helmetContext));


		console.log("helmetContext:", JSON.stringify(helmetContext));

		const htmlAttrs = helmet?.htmlAttributes?.toString() ?? "";

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