25 lines
632 B
JavaScript
25 lines
632 B
JavaScript
"use strict";
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require("../../common/vendor.js");
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const eventBus = {
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listeners: {},
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on(eventName, callback) {
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if (!this.listeners[eventName]) {
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this.listeners[eventName] = [];
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}
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this.listeners[eventName].push(callback);
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},
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emit(eventName, ...args) {
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const callbacks = this.listeners[eventName];
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if (callbacks) {
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callbacks.forEach((callback) => callback(...args));
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}
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},
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off(eventName, callback) {
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const callbacks = this.listeners[eventName];
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if (callbacks) {
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this.listeners[eventName] = callbacks.filter((cb) => cb !== callback);
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}
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}
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};
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exports.eventBus = eventBus;
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