Remove built_value dependency from HotRestartResponse (#2732)

* updated HotReloadRequest to use JSON serialization

* merge main and rebuilt client.js

* updated version to 26.2.4-wip

* Remove package:built_value dependency from HotReloadResponse

* Remove package:built_value dependency from HotRestartRequest

* fix merge issue

* dart format hot_restart_request.dart

* Remove built_value from HotRestartResponse

* dart format

Author: jyameo

dwds/CHANGELOG.md

@@ -1,6 +1,6 @@
 ## 26.2.4-wip
 
-- Remove `package:built_value` dependency from `HotReloadRequest`, `HotReloadResponse`, and `HotRestartRequest` and use standard Dart JSON serialization instead.
+- Remove `package:built_value` dependency from `HotReloadRequest`, `HotReloadResponse`, `HotRestartRequest`, and `HotRestartResponse` and use standard Dart JSON serialization instead.
 
 ## 26.2.3
 

dwds/lib/data/hot_restart_response.dart

@@ -2,31 +2,33 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library hot_restart_response;
-
-import 'package:built_value/built_value.dart';
-import 'package:built_value/serializer.dart';
-
-part 'hot_restart_response.g.dart';
-
 /// A response to a hot restart request.
-abstract class HotRestartResponse
-    implements Built<HotRestartResponse, HotRestartResponseBuilder> {
-  static Serializer<HotRestartResponse> get serializer =>
-      _$hotRestartResponseSerializer;
-
+class HotRestartResponse {
   /// The unique identifier matching the request.
-  String get id;
+  final String id;
 
   /// Whether the hot restart succeeded on the client.
-  bool get success;
+  final bool success;
 
   /// An optional error message if success is false.
-  @BuiltValueField(wireName: 'error')
-  String? get errorMessage;
-
-  HotRestartResponse._();
-  factory HotRestartResponse([
-    void Function(HotRestartResponseBuilder) updates,
-  ]) = _$HotRestartResponse;
+  final String? errorMessage;
+
+  HotRestartResponse({
+    required this.id,
+    required this.success,
+    this.errorMessage,
+  });
+
+  factory HotRestartResponse.fromJson(Map<String, dynamic> json) =>
+      HotRestartResponse(
+        id: json['id'] as String,
+        success: json['success'] as bool,
+        errorMessage: json['error'] as String?,
+      );
+
+  Map<String, dynamic> toJson() => {
+    'id': id,
+    'success': success,
+    if (errorMessage != null) 'error': errorMessage,
+  };
 }

dwds/lib/data/hot_restart_response.g.dart

@@ -12,7 +12,6 @@ import 'debug_info.dart';
 import 'devtools_request.dart';
 import 'error_response.dart';
 import 'extension_request.dart';
-import 'hot_restart_response.dart';
 import 'service_extension_request.dart';
 import 'service_extension_response.dart';
 import 'isolate_events.dart';
@@ -31,7 +30,6 @@ part 'serializers.g.dart';
   DebugInfo,
   DevToolsRequest,
   DevToolsResponse,
-  HotRestartResponse,
   IsolateExit,
   IsolateStart,
   ExtensionRequest,

dwds/lib/data/serializers.dart

@@ -327,12 +327,32 @@ class DevHandler {
     }
   }
 
+  /// Deserializes a message from JSON, handling both built_value serializers
+  /// and custom fromJson() implementations.
+  Object? _deserializeMessage(dynamic decoded) {
+    if (decoded is List && decoded.length == 2 && decoded[0] is String) {
+      final typeName = decoded[0] as String;
+      final jsonData = decoded[1] as Map<String, dynamic>;
+
+      switch (typeName) {
+        case 'HotReloadResponse':
+          return HotReloadResponse.fromJson(jsonData);
+        case 'HotRestartResponse':
+          return HotRestartResponse.fromJson(jsonData);
+        default:
+          // Fall through to serializers.deserialize
+          break;
+      }
+    }
+    return serializers.deserialize(decoded);
+  }
+
   void _handleConnection(SocketConnection injectedConnection) {
     _injectedConnections.add(injectedConnection);
     AppConnection? appConnection;
     injectedConnection.stream.listen((data) async {
       try {
-        final message = serializers.deserialize(jsonDecode(data));
+        final message = _deserializeMessage(jsonDecode(data));
         if (message is ConnectRequest) {
           if (appConnection != null) {
             throw StateError(