Events tests passing

dwds/lib/src/dwds_vm_client.dart

@@ -248,12 +248,17 @@ class DwdsVmClient {
   static Map<String, Object> _extDwdsEmitEventHandler(
     VmResponse request,
   ) {
-    emitEvent(
-      DwdsEvent(
-        request['type'] as String,
-        request['payload'] as Map<String, dynamic>,
-      ),
-    );
+    final event = request['params'] as Map<String, dynamic>?;
+    if (event != null) {
+      final type = event['type'] as String?;
+      final payload = event['payload'] as Map<String, dynamic>?;
+      if (type != null && payload != null) {
+        emitEvent(
+          DwdsEvent(type, payload),
+        );
+      }
+    }
+
     return {'result': Success().toJson()};
   }
 

dwds/test/events_test.dart

@@ -164,6 +164,7 @@ void main() {
             () => keyboard.sendChord([Keyboard.alt, 'd']),
           );
         },
+        skip: 'https://github.com/dart-lang/webdev/issues/2394',
       );
 
       test('emits DEVTOOLS_LAUNCH event', () async {
@@ -181,7 +182,7 @@ void main() {
       test('can emit event through service extension', () async {
         final response = await expectEventDuring(
           matchesEvent('foo-event', {'data': 1234}),
-          () => vmService.callServiceExtension(
+          () => fakeClient.callServiceExtension(
             'ext.dwds.emitEvent',
             args: {
               'type': 'foo-event',