24 lines
747 B
TypeScript
24 lines
747 B
TypeScript
/**
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* @fileoverview A set of helper functions to make it easier to work
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* with events in async/await manner.
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*/
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import { on } from 'node:events';
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export const emittedNTimes = async (emitter: NodeJS.EventEmitter, eventName: string, times: number, trigger?: () => void) => {
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const events: any[][] = [];
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const iter = on(emitter, eventName);
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if (trigger) await Promise.resolve(trigger());
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for await (const args of iter) {
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events.push(args);
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if (events.length === times) { break; }
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}
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return events;
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};
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export const emittedUntil = async (emitter: NodeJS.EventEmitter, eventName: string, untilFn: Function) => {
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for await (const args of on(emitter, eventName)) {
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if (untilFn(...args)) { return args; }
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}
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return [];
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};
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