add a bit of extra code so the client doesnt close prematurely

src/tests/telegram.ts

@@ -42,8 +42,23 @@ import * as telegram from '../telegram/telegram';
         return;
     }
     console.log('Message response:', message);
-    // Wait for 5 seconds
+    let messageSent = false;
-    await new Promise(resolve => setTimeout(resolve, 5000));
+    // Temporarily hook onto the client to wait until it is sent
+    function listener(u : any) {
+        if (u?._ === 'updateMessageSendSucceeded') {
+            console.log('Message sent:', u.message.id);
+            // check if the client is a client because ts is fussy
+            if (typeof client === 'object') {
+                messageSent = true;
+                client.off('update', listener);
+            }
+        }
+    }
+    client.on('update', listener);
+    // Wait until the message is sent
+    while (!messageSent) {
+        await new Promise(resolve => setTimeout(resolve, 1000));
+    }
     // Close the client
     const logout = await telegram.destroy(client);
     if (!logout) {