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js/events/EventBus.js

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+export class EventBus
+{
+    static listeners = []
+
+    static addEventListener(eventName, callback)
+    {
+        EventBus.listeners.push({eventName, callback});
+
+        window.addEventListener(eventName, callback, false);
+    }
+
+    static dispatchEvent(event)
+    {
+        window.dispatchEvent(event);
+    }
+
+    static clear()
+    {
+        for (const listener of EventBus.listeners) {
+            window.removeEventListener(listener.eventName, listener.callback, false);
+        }
+
+        EventBus.listeners = [];
+    }
+}