[dwds][dwds_test_common] Migrate package to the SDK repository

This CL migrates the `dwds` and `dwds_test_common` packages into the Dart SDK
repository.

Key Changes:
- Monorepo Compliance: Updated the pubspecs to align with the SDK pub workspace setup.
- Excluded `pkg/dwds_test_common/fixtures/` from `package_deps.dart`.
- Updated pkg to status to skip `dwds/test/integration/*` & `dwds_test_common/fixtures/*` until DWDS migration is complete.
- Remove package `build_daemon` from DWDS' `pubspec.yaml` as it's not approved for SDK env.
- Added `@skip_package_deps_validation` to the following files to ignore import checks for package:build_daemon: `server.dart`, `utilities.dart`, `context.dart`.
- Created `pkg/dwds/lib/src/utilities/test_path_utils.dart` to fix path resolution failures in tests (ie. `build_script_test.dart` and `ensure_version_test.dart`).

Testing:
- All tests passing locally.
- CI try bots are green.

Design Doc: http://goto.google.com/migrating-webdev and http://goto.google.com/migrating-dwds

Fixes https://github.com/dart-lang/sdk/issues/62100
Fixes https://github.com/dart-lang/sdk/issues/62101
Fixes https://github.com/dart-lang/sdk/issues/62102
Fixes https://github.com/dart-lang/sdk/issues/62103

Cq-Include-Trybots: luci.dart.try:pkg-win-release-try,pkg-win-release-arm64-try,pkg-mac-release-try,pkg-mac-release-arm64-try,pkg-linux-release-try,pkg-linux-release-arm64-try,pkg-linux-debug-try

Change-Id: I6130be8b7e0b42fbbf81b26a4950a2c4282e3a48
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/494660
Commit-Queue: Jessy Yameogo <yjessy@google.com>
Reviewed-by: Nate Biggs <natebiggs@google.com>
Reviewed-by: Ben Konyi <bkonyi@google.com>

pkg/dwds/OWNERS

@@ -0,0 +1,3 @@
+set noparent
+# Dart Development Infrastructure Team
+file:/tools/OWNERS_DEV_INFRA

pkg/dwds/analysis_options.yaml

@@ -3,8 +3,11 @@ include: package:dart_flutter_team_lints/analysis_options.yaml
 analyzer:
   exclude:
     # Ignore generated files
-    - "lib/data/*"
     - "lib/src/handlers/injected_client_js.dart"
+    # Ignore integration fixtures to avoid analysis errors from "package:build_daemon".
+    - "test/integration/fixtures/context.dart"
+    - "test/integration/fixtures/server.dart"
+    - "test/integration/fixtures/utilities.dart"
 
 linter:
   rules:

pkg/dwds/lib/data/debug_event.dart

@@ -77,7 +77,7 @@ class BatchedDebugEvents {
 bool _listEquals<T>(List<T>? a, List<T>? b) {
   if (a == null) return b == null;
   if (b == null || a.length != b.length) return false;
-  for (int i = 0; i < a.length; i++) {
+  for (var i = 0; i < a.length; i++) {
     if (a[i] != b[i]) return false;
   }
   return true;

pkg/dwds/lib/data/extension_request.dart

@@ -49,7 +49,8 @@ class ExtensionRequest {
 
   @override
   String toString() =>
-      'ExtensionRequest { id=$id, command=$command, commandParams=$commandParams }';
+      'ExtensionRequest { id=$id, command=$command, '
+      'commandParams=$commandParams }';
 
   @override
   bool operator ==(Object other) =>
@@ -111,7 +112,8 @@ class ExtensionResponse {
 
   @override
   String toString() =>
-      'ExtensionResponse { id=$id, success=$success, result=$result, error=$error }';
+      'ExtensionResponse { id=$id, success=$success, '
+      'result=$result, error=$error }';
 
   @override
   bool operator ==(Object other) =>
@@ -195,7 +197,7 @@ class BatchedEvents {
       identical(this, other) ||
       other is BatchedEvents &&
           runtimeType == other.runtimeType &&
-          const ListEquality().equals(events, other.events);
+          const ListEquality<ExtensionEvent>().equals(events, other.events);
 
   @override
   int get hashCode => Object.hashAll(events);

pkg/dwds/lib/data/hot_reload_request.dart

@@ -2,8 +2,6 @@
 // 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_reload_request;
-
 /// A request to hot reload the application.
 class HotReloadRequest {
   /// A unique identifier for this request.

pkg/dwds/lib/data/hot_reload_response.dart

@@ -2,8 +2,6 @@
 // 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_reload_response;
-
 /// A response to a hot reload request.
 class HotReloadResponse {
   /// The unique identifier matching the request.
@@ -50,5 +48,6 @@ class HotReloadResponse {
 
   @override
   String toString() =>
-      'HotReloadResponse(id: $id, success: $success, errorMessage: $errorMessage)';
+      'HotReloadResponse(id: $id, success: $success, '
+      'errorMessage: $errorMessage)';
 }

pkg/dwds/lib/data/hot_restart_request.dart

@@ -2,8 +2,6 @@
 // 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_request;
-
 /// A request to hot restart the application.
 class HotRestartRequest {
   /// A unique identifier for this request.

pkg/dwds/lib/data/utils.dart

@@ -23,7 +23,8 @@ Map<String, dynamic> listToMap(List<dynamic> list, {String? type}) {
 
   if ((list.length - startIndex).isOdd) {
     throw FormatException(
-      'Expected an even number of elements${type != null ? " after $type" : ""}',
+      'Expected an even number of elements'
+      '${type != null ? " after $type" : ""}',
       list,
     );
   }

pkg/dwds/lib/src/loaders/ddc.dart

@@ -146,8 +146,8 @@ class DdcStrategy extends LoadStrategy {
     AssetReader assetReader,
     this._buildSettings,
     this._g3RelativePath, {
-    String? packageConfigPath,
-  }) : super(assetReader, packageConfigPath: packageConfigPath);
+    super.packageConfigPath,
+  }) : super(assetReader);
 
   @override
   Handler get handler => (request) async {

pkg/dwds/lib/src/loaders/ddc_library_bundle.dart

@@ -146,10 +146,10 @@ class DdcLibraryBundleStrategy extends LoadStrategy {
     AssetReader assetReader,
     this._buildSettings,
     this._g3RelativePath, {
-    String? packageConfigPath,
+    super.packageConfigPath,
     this.reloadedSourcesUri,
     this.injectScriptLoad = true,
-  }) : super(assetReader, packageConfigPath: packageConfigPath);
+  }) : super(assetReader);
 
   @override
   Handler get handler => (request) async {

pkg/dwds/lib/src/loaders/require.dart

@@ -139,8 +139,8 @@ class RequireStrategy extends LoadStrategy {
     this._moduleInfoForProvider,
     AssetReader assetReader,
     this._buildSettings, {
-    String? packageConfigPath,
-  }) : super(assetReader, packageConfigPath: packageConfigPath);
+    super.packageConfigPath,
+  }) : super(assetReader);
 
   @override
   Handler get handler => (request) async {

pkg/dwds/pubspec.yaml

@@ -1,13 +1,14 @@
 name: dwds
-# Every time this changes you need to run `dart run build_runner build`.
+# Every time this changes you need to run `dart run tool/build.dart`.
 version: 27.1.1-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: ^3.12.0-307.0.dev
+  sdk: ^3.12.0-0
+
+resolution: workspace
 
 dependencies:
   async: ^2.9.0
@@ -24,9 +25,7 @@ dependencies:
   pool: ^1.5.0
   pub_semver: ^2.1.1
   shelf: ^1.3.0
-  shelf_packages_handler: ^3.0.0
   shelf_proxy: ^1.0.4
-  shelf_static: ^1.1.0
   shelf_web_socket: ">=2.0.0 <4.0.0"
   source_maps: ^0.10.10
   sse: ^4.2.0
@@ -34,28 +33,17 @@ dependencies:
   stream_channel: ^2.1.2
   vm_service: ">=14.2.4 <16.0.0"
   vm_service_interface: ^2.0.1
-  web: ^1.1.0
   web_socket: ^1.0.1
   web_socket_channel: ">=2.2.0 <4.0.0"
   webkit_inspection_protocol: ^1.0.1
 
 dev_dependencies:
-  args: ^2.4.2
-  build_daemon: ^4.0.0
-  dart_flutter_team_lints: ^3.5.2
-  dwds_test_common:
-    path: ../dwds_test_common
-  graphs: ^2.1.0
-  io: ^1.0.5
-  js: ">=0.6.4 <0.8.0"
-  mime: ^2.0.0
-  test: ^1.21.6
-  webdriver: ^3.0.0
-  yaml: ^3.1.3
-
-dependency_overrides:
-  sse:
-    git:
-      url: https://github.com/dart-lang/tools.git
-      ref: 06493ded8ca27996d979f9f903d2bc24a1215064
-      path: pkgs/sse
+  dart_flutter_team_lints: any
+  dwds_test_common: any
+  graphs: any
+  io: any
+  mime: any
+  test: any
+  web: any
+  webdriver: any
+  yaml: any

pkg/dwds/test/build/build_script_test.dart

@@ -10,11 +10,13 @@ import 'package:dwds/src/handlers/injected_client_js.dart';
 import 'package:path/path.dart' as p;
 import 'package:test/test.dart';
 
+import 'test_path_utils.dart';
+
 void main() {
   group('Committed file integrity tests', () {
-    test('injected_client_js.dart is in sync with web/client.dart', () {
+    test('injected_client_js.dart is in sync with web/client.dart', () async {
       final clientDartString = File(
-        'web/client.dart',
+        await dwdsPath('web/client.dart'),
       ).readAsStringSync().replaceAll('\r\n', '\n');
       final expectedHash = sha256
           .convert(utf8.encode(clientDartString))
@@ -37,11 +39,17 @@ void main() {
 
   group('Build script tests', () {
     setUpAll(() async {
-      // Use Platform.executable to ensure we use the same Dart SDK
-      final result = await Process.run(Platform.executable, [
+      // Use Platform.executable to ensure the same Dart SDK is used. Only
+      // resolve the absolute path if it's a local/relative path. Global
+      // system commands (no path separators) are passed as-is.
+      final executable = Platform.executable;
+      final resolvedExecutable = executable.contains(p.separator)
+          ? File(executable).absolute.path
+          : executable;
+      final result = await Process.run(resolvedExecutable, [
         'run',
         'tool/build.dart',
-      ]);
+      ], workingDirectory: await dwdsPackageRoot);
 
       expect(
         result.exitCode,
@@ -50,14 +58,18 @@ void main() {
       );
     });
 
-    test('generates client.js', () {
-      final clientJsFile = File(p.join('lib', 'src', 'injected', 'client.js'));
+    test('generates client.js', () async {
+      final clientJsFile = File(
+        await dwdsPath(p.join('lib', 'src', 'injected', 'client.js')),
+      );
       expect(clientJsFile.existsSync(), isTrue);
       expect(clientJsFile.lengthSync(), greaterThan(0));
     });
 
-    test('generates version.dart', () {
-      final versionFile = File(p.join('lib', 'src', 'version.dart'));
+    test('generates version.dart', () async {
+      final versionFile = File(
+        await dwdsPath(p.join('lib', 'src', 'version.dart')),
+      );
       expect(versionFile.existsSync(), isTrue);
       expect(
         versionFile.readAsStringSync(),
@@ -65,23 +77,29 @@ void main() {
       );
     });
 
-    test('generates injected_client_js.dart', () {
+    test('generates injected_client_js.dart', () async {
       final injectedFile = File(
-        p.join('lib', 'src', 'handlers', 'injected_client_js.dart'),
+        await dwdsPath(
+          p.join('lib', 'src', 'handlers', 'injected_client_js.dart'),
+        ),
       );
       expect(injectedFile.existsSync(), isTrue);
       expect(injectedFile.lengthSync(), greaterThan(0));
     });
 
-    test('injected_client_js.dart matches client.js content', () {
-      final clientJsFile = File(p.join('lib', 'src', 'injected', 'client.js'));
+    test('injected_client_js.dart matches client.js content', () async {
+      final clientJsFile = File(
+        await dwdsPath(p.join('lib', 'src', 'injected', 'client.js')),
+      );
       final actualClientJs = clientJsFile.readAsStringSync().replaceAll(
         '\r\n',
         '\n',
       );
 
       final injectedFile = File(
-        p.join('lib', 'src', 'handlers', 'injected_client_js.dart'),
+        await dwdsPath(
+          p.join('lib', 'src', 'handlers', 'injected_client_js.dart'),
+        ),
       );
       final injectedContent = injectedFile.readAsStringSync();
 

pkg/dwds/test/build/ensure_version_test.dart

@@ -12,9 +12,12 @@ import 'package:pub_semver/pub_semver.dart';
 import 'package:test/test.dart';
 import 'package:yaml/yaml.dart';
 
+import 'test_path_utils.dart';
+
 void main() {
-  test('dwds lib/src/version.dart matches the pubspec version', () {
-    final pubspec = loadYaml(File('pubspec.yaml').readAsStringSync()) as Map;
+  test('dwds lib/src/version.dart matches the pubspec version', () async {
+    final pubspecPath = await dwdsPath('pubspec.yaml');
+    final pubspec = loadYaml(File(pubspecPath).readAsStringSync()) as Map;
     expect(
       Version.parse(packageVersion),
       Version.parse(pubspec['version'] as String),

pkg/dwds/test/build/min_sdk_test.dart

@@ -1,38 +0,0 @@
-// Copyright (c) 2021, the Dart project authors.  Please see the AUTHORS file
-// 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.
-
-@TestOn('vm')
-@Skip('Intended to run in analyze stage on stable SDK only, see mono_pkg.yaml')
-library;
-
-import 'dart:io';
-
-import 'package:pub_semver/pub_semver.dart';
-import 'package:test/test.dart';
-import 'package:yaml/yaml.dart';
-
-void main() {
-  test('dwds pubspec has the stable as min SDK constraint', () {
-    final pubspec = loadYaml(File('pubspec.yaml').readAsStringSync()) as Map;
-    var sdkVersion = Version.parse(Platform.version.split(' ')[0]);
-    sdkVersion = Version(sdkVersion.major, sdkVersion.minor, 0);
-
-    final sdkConstraint = VersionConstraint.compatibleWith(sdkVersion);
-    final environment = pubspec['environment'] as Map? ?? {};
-    final pubspecSdkConstraint = environment['sdk'];
-    expect(pubspecSdkConstraint, isNotNull);
-    final parsedConstraint = VersionConstraint.parse(
-      pubspecSdkConstraint as String,
-    );
-    expect(
-      sdkConstraint.allowsAll(parsedConstraint),
-      true,
-      reason:
-          'Min sdk constraint is outdated. Please update SDK constraint in '
-          'pubspec to allow latest stable and backwards compatible versions.'
-          '\n  Current stable: $sdkVersion,'
-          '\n  Dwds pubspec constraint: $pubspecSdkConstraint',
-    );
-  });
-}

pkg/dwds/test/build/test_path_utils.dart

@@ -0,0 +1,25 @@
+// Copyright (c) 2026, the Dart project authors.  Please see the AUTHORS file
+// 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.
+
+import 'dart:isolate';
+import 'package:path/path.dart' as p;
+
+/// Returns the path to the `dwds` package root directory.
+Future<String> get dwdsPackageRoot async {
+  final uri = await Isolate.resolvePackageUri(
+    Uri.parse('package:dwds/dwds.dart'),
+  );
+  if (uri == null) {
+    throw StateError('Could not resolve package:dwds');
+  }
+  // uri is file:///.../pkg/dwds/lib/dwds.dart
+  // We need to go up 2 levels to get to pkg/dwds
+  return p.dirname(p.dirname(uri.toFilePath()));
+}
+
+/// Returns the absolute path to a file or directory relative to the `dwds`
+/// package root.
+Future<String> dwdsPath(String pathFromDwds) async {
+  return p.normalize(p.join(await dwdsPackageRoot, pathFromDwds));
+}

pkg/dwds/test/integration/fixtures/context.dart

@@ -2,6 +2,8 @@
 // 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.
 
+// @skip_package_deps_validation
+
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';

pkg/dwds/test/integration/fixtures/server.dart

@@ -2,6 +2,8 @@
 // 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.
 
+// @skip_package_deps_validation
+
 import 'dart:io';
 
 import 'package:build_daemon/data/build_status.dart' as daemon;

pkg/dwds/test/integration/fixtures/utilities.dart

@@ -2,6 +2,8 @@
 // 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.
 
+// @skip_package_deps_validation
+
 import 'dart:io';
 
 import 'package:build_daemon/client.dart';

pkg/dwds_test_common/LICENSE

@@ -0,0 +1,27 @@
+Copyright 2026, the Dart project authors.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+    * Neither the name of Google LLC nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

pkg/dwds_test_common/OWNERS

@@ -0,0 +1,3 @@
+set noparent
+# Dart Development Infrastructure Team
+file:/tools/OWNERS_DEV_INFRA

pkg/dwds_test_common/pubspec.yaml

@@ -3,16 +3,17 @@ publish_to: none
 description: >-
   Common test functionality.
 environment:
-  sdk: ^3.10.0-0.0.dev
+  sdk: ^3.12.0-0
+
+resolution: workspace
 
 dependencies:
   dwds: any
-  file: ">=6.0.0 <8.0.0"
-  logging: ^1.0.1
-  path: ^1.8.1
-  pub_semver: ^2.1.1
-  test: ^1.21.1
+  file: any
+  logging: any
+  path: any
+  pub_semver: any
+  test: any
 
 dev_dependencies:
-  dart_flutter_team_lints: ^3.5.2
-  yaml: ^3.1.2
+  dart_flutter_team_lints: any

pkg/pkg.status

@@ -52,6 +52,8 @@ dev_compiler/test/options/*: Skip # test needs fixes
 dev_compiler/test/sourcemap/*: SkipByDesign # Skip sourcemap tests
 dev_compiler/test/sourcemap/testfiles/*: SkipByDesign # Skip dev_compiler codegen tests
 dev_compiler/test/worker/*: Skip # test needs fixes
+dwds/test/integration/*: SkipByDesign # Skip integration tests relying on build_daemon/build_runner.
+dwds_test_common/fixtures/*: SkipByDesign # Skip fixtures relying on build_daemon/build_runner.
 front_end/test/analyze_git_test: Pass, Slow
 front_end/test/bootstrap_test: Pass, Slow
 front_end/test/incremental_compiler_leak_test: Pass, ExtraSlow
@@ -264,8 +266,6 @@ front_end/test/incremental_dart2js_load_from_dill_test: Pass, Slow
 frontend_server_client/test/example/vm_client_test: SkipByDesign # Test is incompatible with Windows platform.
 frontend_server_client/test/example/web_client_test: SkipByDesign # Test is incompatible with Windows platform.
 vm_service/test/private_rpcs/dev_fs_http_put_test: Skip # Windows disallows "?" in paths
-vm_service/test/private_rpcs/dev_fs_http_put_weird_char_test: Skip # Windows disallows "\r" in paths
-vm_service/test/private_rpcs/dev_fs_weird_char_test: Skip # Windows disallows "\r" in paths
 
 [ $browser ]
 */test/analyzer_test: SkipByDesign # No need to run analysis tests on browser bots

pubspec.yaml

@@ -46,6 +46,8 @@ workspace:
   - pkg/dev_compiler
   - pkg/dtd
   - pkg/dtd_impl
+  - pkg/dwds
+  - pkg/dwds_test_common
   - pkg/dynamic_modules
   - pkg/expect
   - pkg/_fe_analyzer_shared

tools/package_deps/bin/package_deps.dart

@@ -337,6 +337,7 @@ class Package implements Comparable<Package> {
         const excludedPaths = {
           'pkg/analyzer_cli/test/data/',
           'pkg/analyzer_testing/lib/mock_packages/package_content/',
+          'pkg/dwds_test_common/fixtures/',
           'pkg/front_end/test/id_testing/data/',
           'pkg/front_end/test/enable_non_nullable/data/',
           'pkg/front_end/test/language_versioning/data/',