15 lines
349 B
TypeScript
15 lines
349 B
TypeScript
import type { CronServiceState } from "./state.js";
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export async function locked<T>(
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state: CronServiceState,
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fn: () => Promise<T>,
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): Promise<T> {
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const next = state.op.then(fn, fn);
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// Keep the chain alive even when the operation fails.
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state.op = next.then(
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() => undefined,
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() => undefined,
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);
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return (await next) as T;
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}
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