Addressed CR comments

dwds/CHANGELOG.md

@@ -18,7 +18,6 @@
 - Add `FrontendServerLegacyStrategyProvider` and update bootstrap generation logic for `LegacyStrategy` - [#2285](https://github.com/dart-lang/webdev/pull/2285)
 - Tolerate failures to detect a Dart execution context. - [#2286](https://github.com/dart-lang/webdev/pull/2286)
 - Fix a null cast error when debugging a `Class` from VS Code. - [#2303](https://github.com/dart-lang/webdev/pull/2303)
-
 - Update `package:vm_service` constraint to `^14.0.0`. - [#2307](https://github.com/dart-lang/webdev/pull/2307)
 - Update `package:vm_service_interface` constraint to `1.0.1`. - [#2307](https://github.com/dart-lang/webdev/pull/2307)
 

dwds/web/client.dart

@@ -373,15 +373,13 @@ external String? get dartWorkspaceName;
 
 bool get _isChromium => window.navigator.vendor.contains('Google');
 
-bool? get _isInternalBuild =>
-    windowContext['\$isInternalBuild'].dartify() as bool?;
+bool? get _isInternalBuild => _toBool(windowContext['\$isInternalBuild']);
 
-bool? get _isFlutterApp => windowContext['\$isFlutterApp'].dartify() as bool?;
+bool? get _isFlutterApp => _toBool(windowContext['\$isFlutterApp']);
 
-String? get _appId => windowContext['\$dartAppId'].dartify() as String?;
+String? get _appId => _toString(windowContext['\$dartAppId']);
 
-String? get _extensionUrl =>
-    windowContext['\$dartExtensionUri'].dartify() as String?;
+String? get _extensionUrl => _toString(windowContext['\$dartExtensionUri']);
 
 String? get _authUrl {
   final extensionUrl = _extensionUrl;
@@ -396,3 +394,6 @@ String? get _authUrl {
       return authUrl.toString();
   }
 }
+
+bool? _toBool(JSAny? object) => (object as JSBoolean?)?.toDart;
+String? _toString(JSAny? object) => (object as JSString?)?.toDart;

dwds/web/reloader/require_restarter.dart

@@ -81,13 +81,12 @@ class RequireRestarter implements Restarter {
           'ext.flutter.disassemble'.toJS,
         )
         .dartify() as bool) {
-      await (developer
-          .callMethod(
-            'invokeExtension'.toJS,
-            'ext.flutter.disassemble'.toJS,
-            '{}'.toJS,
-          )
-          .dartify() as Future<Object?>);
+      await (developer.callMethod(
+        'invokeExtension'.toJS,
+        'ext.flutter.disassemble'.toJS,
+        '{}'.toJS,
+      ) as JSPromise)
+          .toDart;
     }
 
     final newDigests = await _getDigests();