dart-lang · parlough · Oct 29, 2025 · Oct 29, 2025 · Nov 7, 2025 · Nov 7, 2025
diff --git a/_analysis_config/lib/analysis_options.yaml b/_analysis_config/lib/analysis_options.yaml
@@ -39,6 +39,7 @@ linter:
     - unnecessary_lambdas
     - unnecessary_parenthesis
     - unnecessary_statements
+    - use_null_aware_elements
 
 # TODO(https://github.com/dart-lang/webdev/issues/2053): Enable commented-out rules with fixes.
 dart_code_metrics:

diff --git a/_analysis_config/pubspec.yaml b/_analysis_config/pubspec.yaml
@@ -7,4 +7,4 @@ environment:
   sdk: ^3.10.0-0.0.dev
 
 dependencies:
-  lints: ^5.0.0
+  lints: ^6.0.0
diff --git a/dwds/CHANGELOG.md b/dwds/CHANGELOG.md
@@ -1,3 +1,5 @@
+## 26.2.3-wip
+
 ## 26.2.2
 
 - Fix issue where isolate pause events were not reported correctly when using the web socket proxy service.

diff --git a/dwds/debug_extension/tool/copy_builder.dart b/dwds/debug_extension/tool/copy_builder.dart
@@ -5,7 +5,7 @@
 import 'package:build/build.dart';
 
 /// Factory for the build script.
-Builder copyBuilder(_) => _CopyBuilder();
+Builder copyBuilder(BuilderOptions _) => _CopyBuilder();
 
 class _CopyBuilder extends Builder {
   @override

diff --git a/dwds/lib/src/events.dart b/dwds/lib/src/events.dart
@@ -101,8 +101,7 @@ class DwdsEvent {
 
   DwdsEvent.getVM() : this(DwdsEventKind.getVM, {});
 
-  DwdsEvent.resume(String? step)
-    : this(DwdsEventKind.resume, {if (step != null) 'step': step});
+  DwdsEvent.resume(String? step) : this(DwdsEventKind.resume, {'step': ?step});
 
   DwdsEvent.getSourceReport() : this(DwdsEventKind.getSourceReport, {});
 

diff --git a/dwds/lib/src/readers/asset_reader.dart b/dwds/lib/src/readers/asset_reader.dart
@@ -11,7 +11,7 @@ import 'package:package_config/package_config.dart';
 abstract class AssetReader {
   /// Base path of the application, for example, set up in the index file:
   ///
-  /// ```
+  /// ```html
   /// <html>
   ///   <head>
   ///     <base href="/abc/">

diff --git a/dwds/lib/src/version.dart b/dwds/lib/src/version.dart
diff --git a/dwds/pubspec.yaml b/dwds/pubspec.yaml
@@ -1,13 +1,13 @@
 name: dwds
 # Every time this changes you need to run `dart run build_runner build`.
-version: 26.2.2
+version: 26.2.3-wip
 
 description: >-
   A service that proxies between the Chrome debug protocol and the Dart VM
   service protocol.
 repository: https://github.com/dart-lang/webdev/tree/main/dwds
 environment:
-  sdk: ^3.10.0-0.0.dev
+  sdk: ^3.10.0-0
 
 dependencies:
   async: ^2.9.0

diff --git a/dwds/test/common/chrome_proxy_service_common.dart b/dwds/test/common/chrome_proxy_service_common.dart
@@ -565,7 +565,7 @@ void runTests({
         expect(
           isolate.libraries,
           containsAll([
-            _libRef('package:path/path.dart'),
+            _libRef(equals('package:path/path.dart')),
             // TODO: library names change with kernel dart-lang/sdk#36736
             _libRef(endsWith('main.dart')),
           ]),
@@ -2713,7 +2713,7 @@ void runTests({
 
 final _isSuccess = isA<Success>();
 
-TypeMatcher _libRef(uriMatcher) =>
+TypeMatcher _libRef(Matcher uriMatcher) =>
     isA<LibraryRef>().having((l) => l.uri, 'uri', uriMatcher);
 
 void expectEventually(Matcher expectation) {}
diff --git a/dwds/test/debugger_test.dart b/dwds/test/debugger_test.dart
@@ -91,7 +91,7 @@ void main() async {
     skipLists = SkipLists(root);
     debugger = await Debugger.create(
       webkitDebugger,
-      (_, __) {},
+      (_, _) {},
       locations,
       skipLists,
       root,

diff --git a/dwds/test/fixtures/fakes.dart b/dwds/test/fixtures/fakes.dart
@@ -212,9 +212,9 @@ class FakeWebkitDebugger implements WebkitDebugger {
           ReloadConfiguration.none,
           (_) async => {},
           (_) async => {},
-          (_, __) async => null,
-          (MetadataProvider _, String __) async => '',
-          (MetadataProvider _, String __) async => '',
+          (_, _) async => null,
+          (MetadataProvider _, String _) async => '',
+          (MetadataProvider _, String _) async => '',
           (String _) => '',
           (MetadataProvider _) async => <String, ModuleInfo>{},
           FakeAssetReader(),

diff --git a/dwds/test/instances/common/test_inspector.dart b/dwds/test/instances/common/test_inspector.dart
@@ -312,7 +312,7 @@ Matcher matchPrimitiveInstance({
     .having((e) => e.kind, 'kind', kind)
     .having(_getValue, 'value', value);
 
-Matcher matchPlainInstance({required libraryId, required String type}) =>
+Matcher matchPlainInstance({required String libraryId, required String type}) =>
     isA<Instance>()
         .having((e) => e.kind, 'kind', InstanceKind.kPlainInstance)
         .having(
@@ -321,7 +321,7 @@ Matcher matchPlainInstance({required libraryId, required String type}) =>
           matchClassRef(name: type, libraryId: libraryId),
         );
 
-Matcher matchListInstance({required dynamic type}) => isA<Instance>()
+Matcher matchListInstance({required String type}) => isA<Instance>()
     .having((e) => e.kind, 'kind', InstanceKind.kList)
     .having((e) => e.classRef, 'classRef', matchListClassRef(type));
 

diff --git a/dwds/test/puppeteer/extension_common.dart b/dwds/test/puppeteer/extension_common.dart
@@ -12,7 +12,7 @@ import 'package:dwds/data/extension_request.dart';
 import 'package:dwds/src/servers/extension_backend.dart';
 import 'package:dwds/src/utilities/server.dart';
 import 'package:path/path.dart' as p;
-import 'package:puppeteer/puppeteer.dart' hide Response;
+import 'package:puppeteer/puppeteer.dart' hide Request, Response;
 import 'package:shelf/shelf.dart';
 import 'package:shelf_static/shelf_static.dart';
 import 'package:test/test.dart';
@@ -1037,7 +1037,7 @@ Future<HttpServer> _fakeServer({
   return server;
 }
 
-Response _fakeAuthHandler(request) {
+Response _fakeAuthHandler(Request request) {
   if (request.url.path == authenticationPath) {
     return Response.ok(authenticationResponse);
   }

diff --git a/example/web/main.dart b/example/web/main.dart
@@ -12,7 +12,7 @@ import 'dart:html';
 void main() {
   print('Initial Print :)');
 
-  registerExtension('ext.print', (_, __) async {
+  registerExtension('ext.print', (_, _) async {
     print('Hello World !! :)');
     return ServiceExtensionResponse.result(json.encode({'success': true}));
   });

diff --git a/fixtures/_test/example/append_body/main.dart b/fixtures/_test/example/append_body/main.dart
@@ -28,7 +28,7 @@ void main() {
   log(logMessage);
   previousLog = logMessage;
 
-  registerExtension('ext.flutter.disassemble', (_, __) async {
+  registerExtension('ext.flutter.disassemble', (_, _) async {
     log('start disassemble');
     await Future.delayed(const Duration(seconds: 1));
     log('end disassemble');

diff --git a/fixtures/_test/example/hello_world/main.dart b/fixtures/_test/example/hello_world/main.dart
@@ -99,7 +99,7 @@ void main() async {
   // recognize this as an available extension.
   registerExtension(
     'ext.hello_world.existing',
-    (_, __) => Future.value(ServiceExtensionResponse.error(0, '')),
+    (_, _) => Future.value(ServiceExtensionResponse.error(0, '')),
   );
 
   window.console.debug('Page Ready');

diff --git a/fixtures/_test_package/web/main.dart b/fixtures/_test_package/web/main.dart
@@ -61,7 +61,7 @@ void main() async {
 }
 
 void registerUserExtension(int id) async {
-  registerExtension('ext.extension$id', (_, __) async {
+  registerExtension('ext.extension$id', (_, _) async {
     print('Hello World from extension$id');
     return ServiceExtensionResponse.result(json.encode({'success': true}));
   });

diff --git a/fixtures/_webdev_smoke/web/main.dart b/fixtures/_webdev_smoke/web/main.dart
@@ -12,7 +12,7 @@ import 'dart:html';
 void main() {
   print('Initial Print');
 
-  registerExtension('ext.print', (_, __) async {
+  registerExtension('ext.print', (_, _) async {
     print('Hello World');
     return ServiceExtensionResponse.result(json.encode({'success': true}));
   });

diff --git a/webdev/test/tls_test.dart b/webdev/test/tls_test.dart
@@ -65,8 +65,7 @@ void main() {
         emitsThrough(contains('Built with build_runner')),
       );
 
-      final client = HttpClient()
-        ..badCertificateCallback = (_, __, ___) => true;
+      final client = HttpClient()..badCertificateCallback = (_, _, _) => true;
       try {
         final request = await client.getUrl(
           Uri.parse('https://localhost:$port'),
@@ -112,8 +111,7 @@ void main() {
           'No non-loopback IPv4 address available, skipping hostname test.',
         );
       } else {
-        final client = HttpClient()
-          ..badCertificateCallback = (_, __, ___) => true;
+        final client = HttpClient()..badCertificateCallback = (_, _, _) => true;
         try {
           final request = await client.getUrl(
             Uri.parse('https://${nonLoopback.address}:$port'),