Beta (#1234)

web/charts/lib/behaviors/selection_user_managed.dart

@@ -130,7 +130,7 @@ class SelectionUserManagedState extends State<SelectionUserManaged> {
         onPressed: _handleClearSelection, child: const Text('Clear Selection'));
 
     return Column(
-        children: [SizedBox(child: chart, height: 150.0), clearSelection]);
+        children: [SizedBox(height: 150.0, child: chart), clearSelection]);
   }
 
   void _infoSelectionModelUpdated(charts.SelectionModel<String> model) {

web/charts/lib/behaviors/slider.dart

@@ -118,7 +118,7 @@ class _SliderCallbackState extends State<SliderLine> {
       });
     }
 
-    SchedulerBinding.instance!.addPostFrameCallback(rebuild);
+    SchedulerBinding.instance.addPostFrameCallback(rebuild);
   }
 
   @override

web/charts/lib/gallery_scaffold.dart

@@ -43,7 +43,7 @@ class GalleryScaffold extends StatefulWidget {
       });
 
   @override
-  _GalleryScaffoldState createState() => _GalleryScaffoldState();
+  State<GalleryScaffold> createState() => _GalleryScaffoldState();
 }
 
 class _GalleryScaffoldState extends State<GalleryScaffold> {
@@ -61,7 +61,7 @@ class _GalleryScaffoldState extends State<GalleryScaffold> {
             SizedBox(height: 250.0, child: widget.childBuilder()),
           ])),
       floatingActionButton: FloatingActionButton(
-          child: const Icon(Icons.refresh), onPressed: _handleButtonPress),
+          onPressed: _handleButtonPress, child: const Icon(Icons.refresh)),
     );
   }
 }

web/charts/lib/main.dart

@@ -22,13 +22,13 @@ class GalleryApp extends StatefulWidget {
   const GalleryApp({Key? key}) : super(key: key);
 
   @override
-  GalleryAppState createState() => GalleryAppState();
+  State<GalleryApp> createState() => _GalleryAppState();
 }
 
 /// The main gallery app state.
 ///
 /// Controls performance overlay, and instantiates a [Home] widget.
-class GalleryAppState extends State<GalleryApp> {
+class _GalleryAppState extends State<GalleryApp> {
   // Initialize app settings from the default configuration.
   bool _showPerformanceOverlay = defaultConfig.showPerformanceOverlay;
 

web/charts/pubspec.lock

@@ -47,7 +47,7 @@ packages:
       name: flutter_lints
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "2.0.1"
   intl:
     dependency: "direct main"
     description:
@@ -61,7 +61,7 @@ packages:
       name: lints
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.1"
+    version: "2.0.0"
   logging:
     dependency: transitive
     description:
@@ -103,5 +103,5 @@ packages:
     source: hosted
     version: "2.1.2"
 sdks:
-  dart: ">=2.14.0 <3.0.0"
+  dart: ">=2.17.0-206.0.dev <3.0.0"
   flutter: ">=2.5.0"

web/charts/pubspec.yaml

@@ -3,7 +3,7 @@ description: Charts-Flutter Demo
 publish_to: none
 
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: ">=2.17.0-0 <3.0.0"
 
 dependencies:
   flutter:
@@ -12,8 +12,8 @@ dependencies:
   meta: ^1.1.1
   intl: ^0.17.0
 
-dev_dependencies: 
-  flutter_lints: ^1.0.4
+dev_dependencies:
+  flutter_lints: ^2.0.1
 
 flutter:
   uses-material-design: true