add the breaking API change health check

.github/workflows/health.yaml

@@ -8,7 +8,9 @@ jobs:
   health:
     uses: dart-lang/ecosystem/.github/workflows/health.yaml@main
     with:
-      checks: "version,changelog,do-not-submit"
+      checks: "version,changelog,do-not-submit,breaking"
+      fail_on: "version,changelog,do-not-submit,breaking"
+      warn_on: "license,coverage,leaking"
       ignore_license: "**.g.dart"
       sdk: dev
     permissions:

_test/lib/app.dart

@@ -4,8 +4,8 @@
 
 import 'package:web/web.dart';
 
-void startApp({String? text}) {
-  text ??= 'Hello World!';
+void startApp({required String text}) {
+  // text ??= 'Hello World!';
   var component = HTMLDivElement()..text = text;
   document.body!.append(component);
 }

_test/test/hello_world_deferred_test.dart

@@ -14,7 +14,7 @@ import 'package:web/web.dart';
 import 'common/message.dart' deferred as m;
 
 void main() {
-  setUp(startApp);
+  setUp(() => startApp(text: 'Hello World!'));
 
   tearDown(() {
     document.body!.innerHTML = ''.toJS;

_test/test/hello_world_test.dart

@@ -16,7 +16,7 @@ import 'package:web/web.dart';
 import 'common/message.dart';
 
 void main() {
-  setUp(startApp);
+  setUp(() => startApp(text: 'Hello World!'));
 
   tearDown(() {
     document.body!.innerHTML = ''.toJS;

build_web_compilers/CHANGELOG.md

@@ -1,3 +1,5 @@
+## 4.2.0
+
 ## 4.1.0-beta.1
 
 - Fix loading compiled modules from subdirectories.

build_web_compilers/lib/builders.dart

@@ -12,7 +12,7 @@ import 'src/sdk_js_compile_builder.dart';
 import 'src/sdk_js_copy_builder.dart';
 
 // Shared entrypoint builder
-Builder webEntrypointBuilder(BuilderOptions options) =>
+Object webEntrypointBuilder(BuilderOptions options) =>
     WebEntrypointBuilder.fromOptions(options);
 
 // Ddc related builders

build_web_compilers/pubspec.yaml

@@ -1,5 +1,5 @@
 name: build_web_compilers
-version: 4.1.0-beta.1
+version: 4.2.0
 description: Builder implementations wrapping the dart2js and DDC compilers.
 repository: https://github.com/dart-lang/build/tree/master/build_web_compilers
 # This package can't be part of the workspace because it requires a very recent