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public/assets/sweetalert2/src/staticMethods/eventHandlers.js

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+import globalState from '../globalState.js'
+import EventEmitter from '../utils/EventEmitter.js'
+
+globalState.eventEmitter = new EventEmitter()
+
+/**
+ * @param {string} eventName
+ * @param {EventHandler} eventHandler
+ */
+export const on = (eventName, eventHandler) => {
+  if (globalState.eventEmitter) {
+    globalState.eventEmitter.on(eventName, eventHandler)
+  }
+}
+
+/**
+ * @param {string} eventName
+ * @param {EventHandler} eventHandler
+ */
+export const once = (eventName, eventHandler) => {
+  if (globalState.eventEmitter) {
+    globalState.eventEmitter.once(eventName, eventHandler)
+  }
+}
+
+/**
+ * @param {string} [eventName]
+ * @param {EventHandler} [eventHandler]
+ */
+export const off = (eventName, eventHandler) => {
+  if (!globalState.eventEmitter) {
+    return
+  }
+
+  // Remove all handlers for all events
+  if (!eventName) {
+    globalState.eventEmitter.reset()
+    return
+  }
+
+  if (eventHandler) {
+    // Remove a specific handler
+    globalState.eventEmitter.removeListener(eventName, eventHandler)
+  } else {
+    // Remove all handlers for a specific event
+    globalState.eventEmitter.removeAllListeners(eventName)
+  }
+}