32 lines
1.1 KiB
Plaintext
32 lines
1.1 KiB
Plaintext
import type { TimerHandle } from './timerHandle';
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type SetIntervalFunction = (handler: () => void, timeout?: number, ...args: any[]) => TimerHandle;
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type ClearIntervalFunction = (handle: TimerHandle) => void;
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interface IntervalProvider {
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setInterval: SetIntervalFunction;
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clearInterval: ClearIntervalFunction;
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delegate:
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| {
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setInterval: SetIntervalFunction;
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clearInterval: ClearIntervalFunction;
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}
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| undefined;
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}
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export const intervalProvider: IntervalProvider = {
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// When accessing the delegate, use the variable rather than `this` so that
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// the functions can be called without being bound to the provider.
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setInterval(handler: () => void, timeout?: number, ...args) {
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const { delegate } = intervalProvider;
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if (delegate?.setInterval) {
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return delegate.setInterval(handler, timeout, ...args);
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}
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return setInterval(handler, timeout, ...args);
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},
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clearInterval(handle) {
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const { delegate } = intervalProvider;
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return (delegate?.clearInterval || clearInterval)(handle as any);
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},
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delegate: undefined,
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};
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