48 lines
1.1 KiB
TypeScript
48 lines
1.1 KiB
TypeScript
/**
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* Creates a Promise that resolves after a specified delay
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* @param delayInMs - The delay duration in milliseconds. If null or undefined, resolves immediately.
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* @param signal - Optional AbortSignal to cancel the delay
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* @returns A Promise that resolves after the specified delay
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* @throws {DOMException} When the signal is aborted
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*/
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export async function delay(
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delayInMs?: number | null,
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options?: {
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abortSignal?: AbortSignal;
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},
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): Promise<void> {
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if (delayInMs == null) {
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return Promise.resolve();
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}
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const signal = options?.abortSignal;
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return new Promise<void>((resolve, reject) => {
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if (signal?.aborted) {
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reject(createAbortError());
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return;
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}
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const timeoutId = setTimeout(() => {
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cleanup();
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resolve();
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}, delayInMs);
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const cleanup = () => {
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clearTimeout(timeoutId);
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signal?.removeEventListener('abort', onAbort);
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};
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const onAbort = () => {
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cleanup();
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reject(createAbortError());
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};
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signal?.addEventListener('abort', onAbort);
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});
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}
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function createAbortError(): DOMException {
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return new DOMException('Delay was aborted', 'AbortError');
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}
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