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[Float] Don't preload images inside <noscript> #28815

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merged 1 commit into from
Apr 10, 2024
Merged

[Float] Don't preload images inside <noscript> #28815

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6 changes: 3 additions & 3 deletions packages/react-dom-bindings/src/server/ReactFizzConfigDOM.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2762,7 +2762,7 @@ function pushImg(
props: Object,
resumableState: ResumableState,
renderState: RenderState,
pictureTagInScope: boolean,
pictureOrNoScriptTagInScope: boolean,
): null {
const {src, srcSet} = props;
if (
Expand All @@ -2771,7 +2771,7 @@ function pushImg(
(typeof src === 'string' || src == null) &&
(typeof srcSet === 'string' || srcSet == null) &&
props.fetchPriority !== 'low' &&
pictureTagInScope === false &&
pictureOrNoScriptTagInScope === false &&
// We exclude data URIs in src and srcSet since these should not be preloaded
!(
typeof src === 'string' &&
Expand Down Expand Up @@ -3599,7 +3599,7 @@ export function pushStartInstance(
props,
resumableState,
renderState,
!!(formatContext.tagScope & PICTURE_SCOPE),
!!(formatContext.tagScope & (PICTURE_SCOPE | NOSCRIPT_SCOPE)),
);
}
// Omitted close tags
Expand Down
32 changes: 32 additions & 0 deletions packages/react-dom/src/__tests__/ReactDOMFloat-test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4261,6 +4261,38 @@ body {
);
});

// Fixes: https://github.com/facebook/react/issues/27910
it('omits preloads for images inside noscript tags', async () => {
function App() {
return (
<html>
<body>
<img src="foo" />
<noscript>
<img src="bar" />
</noscript>
</body>
</html>
);
}

await act(() => {
renderToPipeableStream(<App />).pipe(writable);
});

expect(getMeaningfulChildren(document)).toEqual(
<html>
<head>
<link rel="preload" href="foo" as="image" />
</head>
<body>
<img src="foo" />
<noscript>&lt;img src="bar"&gt;</noscript>
</body>
</html>,
);
});

it('should handle media on image preload', async () => {
function App({isClient}) {
ReactDOM.preload('/server', {
Expand Down