feat: add WASM support to TopMenu and build script

Author: orestesgaolin

lib/widgets/top_menu.dart

@@ -61,10 +61,15 @@ class TopMenu extends StatelessWidget {
                 ),
               ),
               const Spacer(),
+              if (isRunningWithWasm) ...[
+                Text('(WASM)'),
+              ],
             ],
           ),
         );
       },
     );
   }
 }
+
+const isRunningWithWasm = bool.fromEnvironment('dart.tool.dart2wasm');

scripts/build_github_pages.dart

@@ -19,9 +19,9 @@ void main(List<String> args) async {
   final buildArgs = [
     'build',
     'web',
-    '--wasm'
     '--base-href=$baseHref',
     if (isRelease) '--release',
+    '--wasm'
   ];
 
   final buildResult = await Process.run(