add commnets

src/app/services/chat.service.ts

@@ -33,9 +33,10 @@ export class ChatService {
     )
     {
       this.setHeader()
+      window['setChatHeader'] = this.setHeader
     }
 
-    setHeader() {
+    setHeader = () => {
       this.loggedUserChat = this.authService.ValidatedUserChat;
       this.headers = new HttpHeaders();
       this.headers = this.headers.set('X-User-Id', this.loggedUserChat['data'].userId);