20 lines
557 B
JavaScript
20 lines
557 B
JavaScript
'use strict'
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/**
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* Listens for an event on an object and resolves a promise when the event is emitted.
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* @param {Object} emitter - The object to listen to.
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* @param {string} event - The name of the event to listen for.
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* @param {Function} fn - The function to call when the event is emitted.
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* @returns {Promise} A promise that resolves when the event is emitted.
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*/
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function once (emitter, event, fn) {
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return new Promise(resolve => {
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emitter.on(event, (...args) => {
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fn(...args)
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resolve()
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})
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})
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}
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module.exports = { once }
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