try flutter versions

.github/workflows/dart.yml

@@ -16,7 +16,7 @@ jobs:
         name: Generate matrix from pubspec.yaml
         uses: flutter-actions/pubspec-matrix-action@v1
         with:
-          pubspec: "pubspec.yaml"
+          channel: "stable"
     outputs:
       matrix: ${{ steps.pubspec.outputs.matrix }}
 
@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: flutter-actions/setup-flutter@v3
         with:
@@ -36,6 +36,9 @@ jobs:
 
       - run: flutter --version
 
+      - run: dart pub add lints
+      - run: dart pub add test
+
       - name: Install dependencies
         run: flutter pub get
 

example/better_router_example.dart

@@ -15,21 +15,21 @@ final routes = <String, PageRoute<dynamic> Function(RouteSettings)>{
             onPressed: () =>
                 Navigator.pushNamed(context, "/custom_route_transition"),
             child: Text("Go to custom transition"))
-      ])),
+      ])).call,
   '/books': DefaultPageRouteBuilder((context) => Column(children: [
         for (var i = 0; i < books.length; i++)
           TextButton(
               onPressed: () =>
                   Navigator.pushNamed(context, "/books/${books[i].id}"),
               child: Text(books[i].name))
-      ])),
+      ])).call,
   r"\/books\/(?<id>.+)": DefaultPageRouteBuilder((context) {
     final params = RouteParams.of(context);
 
     return Column(
       children: [Text('book page'), Text("Book ID: ${params['id']}")],
     );
-  }),
+  }).call,
   '/custom_route_transition': (RouteSettings settings) => PageRouteBuilder(
       pageBuilder: (context, animation, secondaryAnimation) =>
           Text("Transition"),
@@ -44,7 +44,7 @@ final routes = <String, PageRoute<dynamic> Function(RouteSettings)>{
           child: child,
         );
       }),
-  '-matchAll': DefaultPageRouteBuilder((_) => Text('not found page')),
+  '-matchAll': DefaultPageRouteBuilder((_) => Text('not found page')).call,
 };
 
 void main() {

pubspec.yaml

@@ -3,12 +3,11 @@ description: the better router is a powerful, but for humans, flutter router.
 version: 2.1.0
 repository: https://github.com/dukex/better_router
 environment:
-  sdk: '>=2.17.5 <4.0.0'
+  sdk: ">=2.17.5"
+  flutter: ">=3.0.3"
 dependencies:
   flutter:
     sdk: flutter
 dev_dependencies:
-  lints: ^2.0.0
-  test: ^1.16.0
   flutter_test:
     sdk: flutter