https://bangbros.com/_p1cdn/tour/EventBus.js

1/* eslint-disable */
2(function() {
3    if (!window.eventBus) {
4        const subscribers = {};
5
6        window.eventBus = {
7            /**
8             * Subscribe to an event
9             * @param {string} event - Event name to subscribe to
10             * @param {Function} callback - Function to call when event is published
11             * @returns {Function} - Unsubscribe function
12             */
13            subscribe: function(event, callback) {
14                if (!subscribers[event]) {
15                    subscribers[event] = [];
16                }
17
18                const index = subscribers[event].push(callback) - 1;
19
20                return function unsubscribe() {
21                    subscribers[event].splice(index, 1);
22                };
23            },
24
25            /**
26             * Publish an event with data
27             * @param {string} event - Event name to publish
28             * @param {any} data - Data to pass to subscribers
29             */
30            publish: function(event, data) {
31                if (!subscribers[event]) {
32                    return;
33                }
34
35                subscribers[event].forEach(callback => {
36                    try {
37                        callback(data);
38                    } catch (err) {
39                        console.error(`Error in event handler for ${event}:`, err);
40                    }
41                });
42            },
43
44            /**
45             * Clear all subscribers for an event or all events
46             * @param {string} [event] - Event to clear subscribers for (optional, clears all if not provided)
47             */
48            clear: function(event) {
49                if (event) {
50                    subscribers[event] = [];
51                } else {
52                    Object.keys(subscribers).forEach(key => {
53                        subscribers[key] = [];
54                    });
55                }
56            },
57
58            /**
59             * Get the number of subscribers for an event
60             * @param {string} event - Event name
61             * @returns {number} - Number of subscribers
62             */
63            getSubscriberCount: function(event) {
64                return subscribers[event] ? subscribers[event].length : 0;
65            },
66
67            /**
68             * Get all event names that have subscribers
69             * @returns {string[]} - Array of event names
70             */
71            getEvents: function() {
72                return Object.keys(subscribers).filter(event => subscribers[event].length > 0);
73            },
74        };
75
76        // Trigger the initialized event
77        window.dispatchEvent(new CustomEvent(`EventBus:initialized`));
78    }
79})();