src/main.dart

@@ -15,7 +15,7 @@ class MainApp extends StatelessWidget {
             home: Scaffold(
                 body: Center(
                     //child: Text('Wow, nice, Hello World!'),
-                    child: Tile("A", HitType.hit),
+                    child: Tile("A", .hit),
                 ),
             ),
         );

util/run-macos

@@ -2,4 +2,4 @@
 SDIR=$(cd "$(dirname "$0")" ; pwd -P)
 
 cd $SDIR/../abc
-flutter run -d macos
+flutter run --enable-experiment=dot-shorthands -d macos