Fix ignored setState in Safari when iframe is touched #24459
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facebook-github-bot
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React Core Team
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Comparing: 340060c...b7b40cd Critical size changesIncludes critical production bundles, as well as any change greater than 2%:
Significant size changesIncludes any change greater than 0.2%: (No significant changes) |
gaearon
commented
Apr 28, 2022
| queue.forEach(cb => cb()); | ||
| queue = []; | ||
| flushMicrotasksPrematurely = function() { | ||
| while (queue.length > 0) { |
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This simulates the Safari behavior of trying to drain the queue until it's empty. So that we don't "fix" this by adding an infinite loop.
Proof:
<body>
<script>
let busy = true
const callback = () => {
if (busy) {
console.error('noo im busy')
queueMicrotask(callback)
} else {
console.log('im ok')
}
}
queueMicrotask(callback);
console.log("will add iframe");
const iframe = document.createElement("iframe");
iframe.src = "localhost";
document.body.appendChild(iframe);
console.log("did add iframe");
busy = false
</script>
</body>gets Safari infinitely stuck
|
ping @acdlite |
acdlite
approved these changes
May 12, 2022
lunaruan
pushed a commit
to lunaruan/react
that referenced
this pull request
May 13, 2022
facebook-github-bot
pushed a commit
to facebook/react-native
that referenced
this pull request
Jun 6, 2022
Summary: This sync includes the following changes: - **[dd4950c90](facebook/react@dd4950c90 )**: [Flight] Implement useId hook ([#24172](facebook/react#24172)) //<Josh Story>// - **[26a5b3c7f](facebook/react@26a5b3c7f )**: Explicitly set `highWaterMark` to 0 for `ReadableStream` ([#24641](facebook/react#24641)) //<Josh Larson>// - **[aec575914](facebook/react@aec575914 )**: [Fizz] Send errors down to client ([#24551](facebook/react#24551)) //<Josh Story>// - **[a2766387e](facebook/react@a2766387e )**: [Fizz] Improve text separator byte efficiency ([#24630](facebook/react#24630)) //<Josh Story>// - **[f7860538a](facebook/react@f7860538a )**: Fix typo in useSyncExternalStore main entry point error ([#24631](facebook/react#24631)) //<François Chalifour>// - **[1bed20731](facebook/react@1bed20731 )**: Add a module map option to the Webpack Flight Client ([#24629](facebook/react#24629)) //<Sebastian Markbåge>// - **[b2763d3ea](facebook/react@b2763d3ea )**: Move hydration code out of normal Suspense path ([#24532](facebook/react#24532)) //<Andrew Clark>// - **[357a61324](facebook/react@357a61324 )**: [DevTools][Transition Tracing] Added support for Suspense Boundaries ([#23365](facebook/react#23365)) //<Luna Ruan>// - **[2c8a1452b](facebook/react@2c8a1452b )**: Fix ignored setState in Safari when iframe is touched ([#24459](facebook/react#24459)) //<dan>// - **[62662633d](facebook/react@62662633d )**: Remove enableFlipOffscreenUnhideOrder ([#24545](facebook/react#24545)) //<Ricky>// - **[34da5aa69](facebook/react@34da5aa69 )**: Only treat updates to lazy as a new mount in legacy mode ([#24530](facebook/react#24530)) //<Ricky>// - **[46a6d77e3](facebook/react@46a6d77e3 )**: Unify JSResourceReference Interfaces ([#24507](facebook/react#24507)) //<Timothy Yung>// - **[6cbf0f7fa](facebook/react@6cbf0f7fa )**: Fork ReactSymbols ([#24484](facebook/react#24484)) //<Ricky>// - **[a10a9a6b5](facebook/react@a10a9a6b5 )**: Add test for hiding children after layout destroy ([#24483](facebook/react#24483)) //<Ricky>// - **[b4eb0ad71](facebook/react@b4eb0ad71 )**: Do not replay erroring beginWork with invokeGuardedCallback when suspended or previously errored ([#24480](facebook/react#24480)) //<Josh Story>// - **[99eef9e2d](facebook/react@99eef9e2d )**: Hide children of Offscreen after destroy effects ([#24446](facebook/react#24446)) //<Ricky>// - **[ce1386028](facebook/react@ce1386028 )**: Remove enablePersistentOffscreenHostContainer flag ([#24460](facebook/react#24460)) //<Andrew Clark>// - **[72b7462fe](facebook/react@72b7462fe )**: Bump local package.json versions for 18.1 release ([#24447](facebook/react#24447)) //<Andrew Clark>// - **[22edb9f77](facebook/react@22edb9f77 )**: React `version` field should match package.json ([#24445](facebook/react#24445)) //<Andrew Clark>// - **[6bf3deef5](facebook/react@6bf3deef5 )**: Upgrade react-shallow-renderer to support react 18 ([#24442](facebook/react#24442)) //<Michael サイトー 中村 Bashurov>// Changelog: [General][Changed] - React Native sync for revisions bd4784c...d300ceb jest_e2e[run_all_tests] Reviewed By: cortinico, kacieb Differential Revision: D36874368 fbshipit-source-id: c0ee015f4ef2fa56e57f7a1f6bc37dd05c949877
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Fixes #24458.
Just like #22459, this is caused by a Safari bug (https://bugs.webkit.org/show_bug.cgi?id=235322).
Our original solution for #22459 was #23111: if the microtask callback runs prematurely, we ignore it. This relied on the assumption that we always check for more work at the end of the task anyway. However, we don't check for more work if we aren't either rendering or committing — notably, we don't check for more work at the end of the event handler.
This fix is to allow the update to flush early. This doesn't respect batching but matches what Safari is trying to do (which is to flush everything early).