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