migrated(squash)

Author: naman9271

globals.d.ts

@@ -9,6 +9,7 @@ declare global {
             };
         };
         connectionTimes?: Record<string, any>;
+        attachEvent?: (event: string, listener: EventListener) => void;
     }
     interface RTCRtpReceiver {
         createEncodedStreams?: () => {

modules/xmpp/XmppConnection.ts

@@ -621,7 +621,7 @@ export default class XmppConnection extends Listenable {
      * @param {number} timeout - The time specified in milliseconds for a timeout to occur.
      * @returns {number} - The id used to send the IQ.
      */
-    sendIQ(elem: Element, callback: Optional<IQResultCallback> = undefined, errback: Optional<ErrorCallback> = undefined, timeout: Optional<number> = undefined): number | undefined {
+    sendIQ(elem: Element, callback: Optional<IQResultCallback> = undefined, errback: Optional<ErrorCallback> = undefined, timeout: Optional<number> = undefined): Optional<number> {
         if (!this.connected) {
             errback('Not connected');