add code to event message if name undefined

Author: lobsterkatie

packages/browser/src/eventbuilder.ts

@@ -76,17 +76,22 @@ export function eventFromUnknownInput(
     event = eventFromStacktrace(computeStackTrace(exception as Error));
     return event;
   }
-  if (isDOMError(exception as DOMError) || isDOMException(exception as DOMException)) {
+  if (isDOMError(exception) || isDOMException(exception)) {
     // If it is a DOMError or DOMException (which are legacy APIs, but still supported in some browsers)
-    // then we just extract the name and message, as they don't provide anything else
+    // then we just extract the name, code, and message, as they don't provide anything else
     // https://developer.mozilla.org/en-US/docs/Web/API/DOMError
     // https://developer.mozilla.org/en-US/docs/Web/API/DOMException
-    const domException = exception as DOMException;
-    const name = domException.name || (isDOMError(domException) ? 'DOMError' : 'DOMException');
-    const message = domException.message ? `${name}: ${domException.message}` : name;
 
-    event = eventFromString(message, syntheticException, options);
-    addExceptionTypeValue(event, message);
+    // eslint-disable-next-line prefer-const
+    let { name, code, message } = exception as DOMException;
+    if (!name) {
+      name = isDOMError(exception) ? 'DOMError' : 'DOMException';
+      name = code ? `${name} (${code})` : name;
+    }
+    const eventMessage = message ? `${name}: ${message}` : name;
+
+    event = eventFromString(eventMessage, syntheticException, options);
+    addExceptionTypeValue(event, eventMessage);
     return event;
   }
   if (isError(exception as Error)) {