27 lines
420 B
JavaScript
27 lines
420 B
JavaScript
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'use strict'
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class Event {
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constructor () {
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this.listeners = []
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}
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addListener (callback) {
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this.listeners.push(callback)
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}
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removeListener (callback) {
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const index = this.listeners.indexOf(callback)
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if (index !== -1) {
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this.listeners.splice(index, 1)
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}
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}
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emit (...args) {
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for (const listener of this.listeners) {
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listener(...args)
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}
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}
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}
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module.exports = Event
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