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Lower Suspense throttling heuristic to 300ms #26803

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May 16, 2023
+3 −3
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Lower Suspense throttling heuristic to 300ms #26803

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2 changes: 1 addition & 1 deletion packages/react-reconciler/src/ReactFiberWorkLoop.js
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Expand Up @@ -375,7 +375,7 @@ let workInProgressRootRecoverableErrors: Array<CapturedValue<mixed>> | null =
// content as it streams in, to minimize jank.
// TODO: Think of a better name for this variable?
let globalMostRecentFallbackTime: number = 0;
const FALLBACK_THROTTLE_MS: number = 500;
const FALLBACK_THROTTLE_MS: number = 300;

// The absolute time for when we should start giving up on rendering
// more and prefer CPU suspense heuristics instead.
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4 changes: 2 additions & 2 deletions packages/react-reconciler/src/__tests__/ReactSuspenseWithNoopRenderer-test.js
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Expand Up @@ -1863,8 +1863,8 @@ describe('ReactSuspenseWithNoopRenderer', () => {
// Advance by a small amount of time. For testing purposes, this is meant
// to be just under the throttling interval. It's a heurstic, though, so
// if we adjust the heuristic we might have to update this test, too.
Scheduler.unstable_advanceTime(400);
jest.advanceTimersByTime(400);
Scheduler.unstable_advanceTime(200);
jest.advanceTimersByTime(200);

// Now resolve B.
await act(async () => {
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