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Leverage scheduler.yield in splitTask when available #66001

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merged 9 commits into from
Oct 16, 2024
Merged

Leverage scheduler.yield in splitTask when available #66001

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8538799
Leverage scheduler.yield in splitTask when available
westonruter Oct 9, 2024
70077b8
Eliminate extra Promise when using scheduler.yield()
westonruter Oct 10, 2024
d5c51a6
Avoid needlessly re-checking whether scheduler.yield() is defined
westonruter Oct 10, 2024
2516cd4
Remove needless function wrapper
westonruter Oct 10, 2024
a0933f4
Ensure that scheduler is context object to yield function
westonruter Oct 10, 2024
ee36a34
Remove needless async
westonruter Oct 10, 2024
0abf7be
Reduce verbosity of scheduler.yield() existence check
westonruter Oct 10, 2024
be4ceff
Fix return type for scheduler.yield()
westonruter Oct 10, 2024
3d40b9f
Define scheduler and scheduler.yield as optional
westonruter Oct 10, 2024
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26 changes: 20 additions & 6 deletions packages/interactivity/src/utils.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,14 @@ interface Flusher {
readonly dispose: () => void;
}

declare global {
interface Window {
scheduler: {
readonly yield: () => void;
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};
}
}

/**
* Executes a callback function after the next frame is rendered.
*
Expand All @@ -48,12 +56,18 @@ const afterNextFrame = ( callback: () => void ) => {
*
* @return Promise
*/
export const splitTask = () => {
return new Promise( ( resolve ) => {
// TODO: Use scheduler.yield() when available.
setTimeout( resolve, 0 );
} );
};
export const splitTask =
'scheduler' in window &&
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typeof window.scheduler === 'object' &&
null !== window.scheduler &&
'yield' in window.scheduler &&
typeof window.scheduler.yield === 'function'
? window.scheduler.yield
: () => {
return new Promise( async ( resolve ) => {
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setTimeout( resolve, 0 );
} );
};

/**
* Creates a Flusher object that can be used to flush computed values and notify listeners.
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