Enable `sort_child_properties_last` lint (#91585)

analysis_options.yaml

@@ -186,7 +186,7 @@ linter:
     - recursive_getters
     - sized_box_for_whitespace
     - slash_for_doc_comments
-    # - sort_child_properties_last # not yet tested
+    - sort_child_properties_last
     - sort_constructors_first
     # - sort_pub_dependencies # prevents separating pinned transitive dependencies
     - sort_unnamed_constructors_first

dev/integration_tests/deferred_components_test/lib/component1.dart

@@ -16,14 +16,14 @@ class LogoScreen extends StatelessWidget {
   Widget build(BuildContext context) {
     print(_testSentinel);
     return Container(
+      padding: const EdgeInsets.all(25),
+      color: Colors.blue,
       child: Column(
         children: <Widget>[
-            const Text('DeferredWidget', key: Key('DeferredWidget')),
-            Image.asset('customassets/flutter_logo.png', key: const Key('DeferredImage')),
-          ]
-        ),
-        padding: const EdgeInsets.all(25),
-        color: Colors.blue,
-      );
-   }
+          const Text('DeferredWidget', key: Key('DeferredWidget')),
+          Image.asset('customassets/flutter_logo.png', key: const Key('DeferredImage')),
+        ],
+      ),
+    );
+  }
 }

dev/manual_tests/lib/drag_and_drop.dart

@@ -132,18 +132,18 @@ class ExampleDragSource extends StatelessWidget {
     if (heavy) {
       return LongPressDraggable<Color>(
         data: color,
-        child: contents,
         feedback: feedback,
         feedbackOffset: feedbackOffset,
         dragAnchorStrategy: dragAnchorStrategy,
+        child: contents,
       );
     } else {
       return Draggable<Color>(
         data: color,
-        child: contents,
         feedback: feedback,
         feedbackOffset: feedbackOffset,
         dragAnchorStrategy: dragAnchorStrategy,
+        child: contents,
       );
     }
   }
@@ -208,10 +208,10 @@ class MovableBall extends StatelessWidget {
     if (position == ballPosition) {
       return Draggable<bool>(
         data: true,
-        child: ball,
         childWhenDragging: dashedBall,
         feedback: ball,
         maxSimultaneousDrags: 1,
+        child: ball,
       );
     } else {
       return DragTarget<bool>(

examples/api/lib/cupertino/context_menu/cupertino_context_menu.0.dart

@@ -35,9 +35,6 @@ class MyStatelessWidget extends StatelessWidget {
           width: 100,
           height: 100,
           child: CupertinoContextMenu(
-            child: Container(
-              color: Colors.red,
-            ),
             actions: <Widget>[
               CupertinoContextMenuAction(
                 child: const Text('Action one'),
@@ -52,6 +49,9 @@ class MyStatelessWidget extends StatelessWidget {
                 },
               ),
             ],
+            child: Container(
+              color: Colors.red,
+            ),
           ),
         ),
       ),

examples/api/lib/material/banner/material_banner.0.dart

@@ -38,12 +38,12 @@ class MyStatelessWidget extends StatelessWidget {
         backgroundColor: Color(0xFFE0E0E0),
         actions: <Widget>[
           TextButton(
-            child: Text('OPEN'),
             onPressed: null,
+            child: Text('OPEN'),
           ),
           TextButton(
-            child: Text('DISMISS'),
             onPressed: null,
+            child: Text('DISMISS'),
           ),
         ],
       ),

examples/api/lib/material/banner/material_banner.1.dart

@@ -42,8 +42,8 @@ class MyStatelessWidget extends StatelessWidget {
               backgroundColor: Colors.green,
               actions: <Widget>[
                 TextButton(
-                  child: Text('DISMISS'),
                   onPressed: null,
+                  child: Text('DISMISS'),
                 ),
               ],
             ),

examples/api/lib/material/bottom_app_bar/bottom_app_bar.1.dart

@@ -97,8 +97,8 @@ class _BottomAppBarDemoState extends State<BottomAppBarDemo> {
         floatingActionButton: _showFab
             ? FloatingActionButton(
                 onPressed: () {},
-                child: const Icon(Icons.add),
                 tooltip: 'Create',
+                child: const Icon(Icons.add),
               )
             : null,
         floatingActionButtonLocation: _fabLocation,

examples/api/lib/material/dropdown/dropdown_button.selected_item_builder.0.dart

@@ -50,8 +50,8 @@ class _MyStatefulWidgetState extends State<MyStatefulWidget> {
         },
         items: items.map((String item) {
           return DropdownMenuItem<String>(
-            child: Text('Log $item'),
             value: item,
+            child: Text('Log $item'),
           );
         }).toList(),
       ),

examples/api/lib/material/floating_action_button/floating_action_button.0.dart

@@ -36,8 +36,8 @@ class MyStatelessWidget extends StatelessWidget {
         onPressed: () {
           // Add your onPressed code here!
         },
-        child: const Icon(Icons.navigation),
         backgroundColor: Colors.green,
+        child: const Icon(Icons.navigation),
       ),
     );
   }

examples/api/lib/material/navigation_rail/navigation_rail.extended_animation.0.dart

@@ -105,8 +105,8 @@ class MyNavigationRailFab extends StatelessWidget {
           ),
           child: animation.value == 0
               ? FloatingActionButton(
-                  child: const Icon(Icons.add),
                   onPressed: onPressed,
+                  child: const Icon(Icons.add),
                 )
               : Align(
                   alignment: AlignmentDirectional.centerStart,

examples/api/lib/material/scaffold/scaffold_messenger_state.show_material_banner.0.dart

@@ -39,8 +39,8 @@ class MyStatelessWidget extends StatelessWidget {
             content: Text('This is a MaterialBanner'),
             actions: <Widget>[
               TextButton(
-                child: Text('DISMISS'),
                 onPressed: null,
+                child: Text('DISMISS'),
               ),
             ],
           ),

examples/api/lib/material/tooltip/tooltip.1.dart

@@ -34,7 +34,6 @@ class MyStatelessWidget extends StatelessWidget {
   Widget build(BuildContext context) {
     return Tooltip(
       message: 'I am a Tooltip',
-      child: const Text('Tap this text and hold down to show a tooltip.'),
       decoration: BoxDecoration(
         borderRadius: BorderRadius.circular(25),
         gradient:
@@ -48,6 +47,7 @@ class MyStatelessWidget extends StatelessWidget {
       ),
       showDuration: const Duration(seconds: 2),
       waitDuration: const Duration(seconds: 1),
+      child: const Text('Tap this text and hold down to show a tooltip.'),
     );
   }
 }

examples/api/lib/services/system_chrome/system_chrome.set_system_u_i_overlay_style.1.dart

@@ -56,8 +56,8 @@ class _MyStatefulWidgetState extends State<MyStatefulWidget> {
       value: _currentStyle,
       child: Center(
         child: ElevatedButton(
-          child: const Text('Change Color'),
           onPressed: _changeColor,
+          child: const Text('Change Color'),
         ),
       ),
     );

examples/api/lib/widgets/animated_switcher/animated_switcher.0.dart

@@ -42,7 +42,7 @@ class _MyStatefulWidgetState extends State<MyStatefulWidget> {
           AnimatedSwitcher(
             duration: const Duration(milliseconds: 500),
             transitionBuilder: (Widget child, Animation<double> animation) {
-              return ScaleTransition(child: child, scale: animation);
+              return ScaleTransition(scale: animation, child: child);
             },
             child: Text(
               '$_count',

examples/api/lib/widgets/async/future_builder.0.dart

@@ -71,9 +71,9 @@ class _MyStatefulWidgetState extends State<MyStatefulWidget> {
           } else {
             children = const <Widget>[
               SizedBox(
-                child: CircularProgressIndicator(),
                 width: 60,
                 height: 60,
+                child: CircularProgressIndicator(),
               ),
               Padding(
                 padding: EdgeInsets.only(top: 16),

examples/api/lib/widgets/async/stream_builder.0.dart

@@ -82,9 +82,9 @@ class _MyStatefulWidgetState extends State<MyStatefulWidget> {
                 case ConnectionState.waiting:
                   children = const <Widget>[
                     SizedBox(
-                      child: CircularProgressIndicator(),
                       width: 60,
                       height: 60,
+                      child: CircularProgressIndicator(),
                     ),
                     Padding(
                       padding: EdgeInsets.only(top: 16),

examples/api/lib/widgets/basic/fitted_box.0.dart

@@ -37,9 +37,9 @@ class MyStatelessWidget extends StatelessWidget {
       width: 300,
       color: Colors.red,
       child: FittedBox(
+        fit: BoxFit.fill,
         child: Image.network(
             'https://flutter.github.io/assets-for-api-docs/assets/widgets/owl-2.jpg'),
-        fit: BoxFit.fill,
       ),
     );
   }

examples/api/lib/widgets/basic/physical_shape.0.dart

@@ -34,7 +34,15 @@ class MyStatelessWidget extends StatelessWidget {
       body: Center(
         child: PhysicalShape(
           elevation: 5.0,
+          clipper: ShapeBorderClipper(
+            shape: RoundedRectangleBorder(
+              borderRadius: BorderRadius.circular(10.0),
+            ),
+          ),
+          color: Colors.orange,
           child: const SizedBox(
+            height: 200.0,
+            width: 200.0,
             child: Center(
               child: Text(
                 'Hello, World!',
@@ -44,14 +52,7 @@ class MyStatelessWidget extends StatelessWidget {
                 ),
               ),
             ),
-            height: 200.0,
-            width: 200.0,
           ),
-          clipper: ShapeBorderClipper(
-              shape: RoundedRectangleBorder(
-            borderRadius: BorderRadius.circular(10.0),
-          )),
-          color: Colors.orange,
         ),
       ),
     );

examples/api/lib/widgets/dismissible/dismissible.0.dart

@@ -42,11 +42,6 @@ class _MyStatefulWidgetState extends State<MyStatefulWidget> {
       padding: const EdgeInsets.symmetric(vertical: 16),
       itemBuilder: (BuildContext context, int index) {
         return Dismissible(
-          child: ListTile(
-            title: Text(
-              'Item ${items[index]}',
-            ),
-          ),
           background: Container(
             color: Colors.green,
           ),
@@ -56,6 +51,11 @@ class _MyStatefulWidgetState extends State<MyStatefulWidget> {
               items.removeAt(index);
             });
           },
+          child: ListTile(
+            title: Text(
+              'Item ${items[index]}',
+            ),
+          ),
         );
       },
     );

examples/api/lib/widgets/drag_target/draggable.0.dart

@@ -43,14 +43,6 @@ class _MyStatefulWidgetState extends State<MyStatefulWidget> {
         Draggable<int>(
           // Data is the value this Draggable stores.
           data: 10,
-          child: Container(
-            height: 100.0,
-            width: 100.0,
-            color: Colors.lightGreenAccent,
-            child: const Center(
-              child: Text('Draggable'),
-            ),
-          ),
           feedback: Container(
             color: Colors.deepOrange,
             height: 100,
@@ -65,6 +57,14 @@ class _MyStatefulWidgetState extends State<MyStatefulWidget> {
               child: Text('Child When Dragging'),
             ),
           ),
+          child: Container(
+            height: 100.0,
+            width: 100.0,
+            color: Colors.lightGreenAccent,
+            child: const Center(
+              child: Text('Draggable'),
+            ),
+          ),
         ),
         DragTarget<int>(
           builder: (

examples/api/lib/widgets/image/image.frame_builder.0.dart

@@ -42,10 +42,10 @@ class MyStatelessWidget extends StatelessWidget {
             return child;
           }
           return AnimatedOpacity(
-            child: child,
             opacity: frame == null ? 0 : 1,
             duration: const Duration(seconds: 1),
             curve: Curves.easeOut,
+            child: child,
           );
         },
       ),

examples/api/lib/widgets/implicit_animations/animated_slide.0.dart

@@ -49,12 +49,12 @@ class _MyStatefulWidgetState extends State<MyStatefulWidget> {
       mainAxisSize: MainAxisSize.min,
       children: <Widget>[
         ElevatedButton(
-          child: const Text('Slide up'),
           onPressed: _slideUp,
+          child: const Text('Slide up'),
         ),
         ElevatedButton(
-          child: const Text('Slide down'),
           onPressed: _slideDown,
+          child: const Text('Slide down'),
         ),
         Padding(
           padding: const EdgeInsets.all(50),

examples/api/lib/widgets/page_storage/page_storage.0.dart

@@ -45,8 +45,8 @@ class _MyHomePageState extends State<MyHomePage> {
         title: const Text('Persistence Example'),
       ),
       body: PageStorage(
-        child: pages[currentTab],
         bucket: _bucket,
+        child: pages[currentTab],
       ),
       bottomNavigationBar: BottomNavigationBar(
         currentIndex: currentTab,

examples/api/lib/widgets/restoration_properties/restorable_value.0.dart

@@ -74,8 +74,8 @@ class _MyStatefulWidgetState extends State<MyStatefulWidget>
   @override
   Widget build(BuildContext context) {
     return OutlinedButton(
-      child: Text('${_answer.value}'),
       onPressed: _incrementAnswer,
+      child: Text('${_answer.value}'),
     );
   }
 }

examples/api/lib/widgets/scrollbar/raw_scrollbar.shape.0.dart

@@ -29,16 +29,16 @@ class MyStatelessWidget extends StatelessWidget {
   Widget build(BuildContext context) {
     return Scaffold(
       body: RawScrollbar(
-        child: ListView(
-          children: List<Text>.generate(
-              100, (int index) => Text((index * index).toString())),
-          physics: const BouncingScrollPhysics(),
-        ),
         shape: const StadiumBorder(
             side: BorderSide(color: Colors.brown, width: 3.0)),
         thickness: 15.0,
         thumbColor: Colors.blue,
         isAlwaysShown: true,
+        child: ListView(
+          physics: const BouncingScrollPhysics(),
+          children: List<Text>.generate(
+              100, (int index) => Text((index * index).toString())),
+        ),
       ),
     );
   }

packages/flutter/lib/src/cupertino/date_picker.dart

@@ -795,6 +795,8 @@ class _CupertinoDatePickerDateTimeState extends State<CupertinoDatePicker> {
 
           assert(debugIsFlipped == isHourRegionFlipped);
         },
+        looping: true,
+        selectionOverlay: selectionOverlay,
         children: List<Widget>.generate(24, (int index) {
           final int hour = isHourRegionFlipped ? (index + 12) % 24 : index;
           final int displayHour = widget.use24hFormat ? hour : (hour + 11) % 12 + 1;
@@ -808,8 +810,6 @@ class _CupertinoDatePickerDateTimeState extends State<CupertinoDatePicker> {
             ),
           );
         }),
-        looping: true,
-        selectionOverlay: selectionOverlay,
       ),
     );
   }
@@ -835,6 +835,8 @@ class _CupertinoDatePickerDateTimeState extends State<CupertinoDatePicker> {
         backgroundColor: widget.backgroundColor,
         squeeze: _kSqueeze,
         onSelectedItemChanged: _onSelectedItemChange,
+        looping: true,
+        selectionOverlay: selectionOverlay,
         children: List<Widget>.generate(60 ~/ widget.minuteInterval, (int index) {
           final int minute = index * widget.minuteInterval;
 
@@ -858,8 +860,6 @@ class _CupertinoDatePickerDateTimeState extends State<CupertinoDatePicker> {
             ),
           );
         }),
-        looping: true,
-        selectionOverlay: selectionOverlay,
       ),
     );
   }
@@ -889,6 +889,7 @@ class _CupertinoDatePickerDateTimeState extends State<CupertinoDatePicker> {
           assert(selectedAmPm == 0 || selectedAmPm == 1);
           _onSelectedItemChange(index);
         },
+        selectionOverlay: selectionOverlay,
         children: List<Widget>.generate(2, (int index) {
           return itemPositioningBuilder(
             context,
@@ -900,7 +901,6 @@ class _CupertinoDatePickerDateTimeState extends State<CupertinoDatePicker> {
             ),
           );
         }),
-        selectionOverlay: selectionOverlay,
       ),
     );
   }
@@ -1172,6 +1172,8 @@ class _CupertinoDatePickerDateState extends State<CupertinoDatePicker> {
           if (_isCurrentDateValid)
             widget.onDateTimeChanged(DateTime(selectedYear, selectedMonth, selectedDay));
         },
+        looping: true,
+        selectionOverlay: selectionOverlay,
         children: List<Widget>.generate(31, (int index) {
           final int day = index + 1;
           return itemPositioningBuilder(
@@ -1182,8 +1184,6 @@ class _CupertinoDatePickerDateState extends State<CupertinoDatePicker> {
             ),
           );
         }),
-        looping: true,
-        selectionOverlay: selectionOverlay,
       ),
     );
   }
@@ -1213,6 +1213,8 @@ class _CupertinoDatePickerDateState extends State<CupertinoDatePicker> {
           if (_isCurrentDateValid)
             widget.onDateTimeChanged(DateTime(selectedYear, selectedMonth, selectedDay));
         },
+        looping: true,
+        selectionOverlay: selectionOverlay,
         children: List<Widget>.generate(12, (int index) {
           final int month = index + 1;
           final bool isInvalidMonth = (widget.minimumDate?.year == selectedYear && widget.minimumDate!.month > month)
@@ -1226,8 +1228,6 @@ class _CupertinoDatePickerDateState extends State<CupertinoDatePicker> {
             ),
           );
         }),
-        looping: true,
-        selectionOverlay: selectionOverlay,
       ),
     );
   }
@@ -1782,6 +1782,7 @@ class _CupertinoTimerPickerState extends State<CupertinoTimerPicker> {
           );
         });
       },
+      selectionOverlay: selectionOverlay,
       children: List<Widget>.generate(24, (int index) {
         final String label = localizations.timerPickerHourLabel(index) ?? '';
         final String semanticsLabel = textDirectionFactor == 1
@@ -1794,7 +1795,6 @@ class _CupertinoTimerPickerState extends State<CupertinoTimerPicker> {
           child: _buildPickerNumberLabel(localizations.timerPickerHour(index), additionalPadding),
         );
       }),
-      selectionOverlay: selectionOverlay,
     );
   }
 
@@ -1847,6 +1847,7 @@ class _CupertinoTimerPickerState extends State<CupertinoTimerPicker> {
           );
         });
       },
+      selectionOverlay: selectionOverlay,
       children: List<Widget>.generate(60 ~/ widget.minuteInterval, (int index) {
         final int minute = index * widget.minuteInterval;
         final String label = localizations.timerPickerMinuteLabel(minute) ?? '';
@@ -1860,7 +1861,6 @@ class _CupertinoTimerPickerState extends State<CupertinoTimerPicker> {
           child: _buildPickerNumberLabel(localizations.timerPickerMinute(minute), additionalPadding),
         );
       }),
-      selectionOverlay: selectionOverlay,
     );
   }
 
@@ -1913,6 +1913,7 @@ class _CupertinoTimerPickerState extends State<CupertinoTimerPicker> {
           );
         });
       },
+      selectionOverlay: selectionOverlay,
       children: List<Widget>.generate(60 ~/ widget.secondInterval, (int index) {
         final int second = index * widget.secondInterval;
         final String label = localizations.timerPickerSecondLabel(second) ?? '';
@@ -1926,7 +1927,6 @@ class _CupertinoTimerPickerState extends State<CupertinoTimerPicker> {
           child: _buildPickerNumberLabel(localizations.timerPickerSecond(second), additionalPadding),
         );
       }),
-      selectionOverlay: selectionOverlay,
     );
   }
 

packages/flutter/lib/src/material/banner.dart

@@ -381,8 +381,8 @@ class _MaterialBannerState extends State<MaterialBanner> {
     }
 
     return Hero(
-      child: ClipRect(child: materialBannerTransition),
       tag: '<MaterialBanner Hero tag - ${widget.content}>',
+      child: ClipRect(child: materialBannerTransition),
     );
   }
 }

packages/flutter/lib/src/material/dropdown.dart

@@ -195,8 +195,8 @@ class _DropdownMenuItemButtonState<T> extends State<_DropdownMenuItemButton<T>>
         enableFeedback: widget.enableFeedback,
         onTap: _handleOnTap,
         onFocusChange: _handleFocusChange,
-        child: child,
         borderRadius: itemBorderRadius,
+        child: child,
       );
     }
     child = FadeTransition(opacity: opacity, child: child);

packages/flutter/lib/src/material/stepper.dart

@@ -759,7 +759,7 @@ class _StepperState extends State<Stepper> with TickerProviderStateMixin {
               AnimatedSize(
                 curve: Curves.fastOutSlowIn,
                 duration: kThemeAnimationDuration,
-                child: Column(children: stepPanels, crossAxisAlignment: CrossAxisAlignment.stretch),
+                child: Column(crossAxisAlignment: CrossAxisAlignment.stretch, children: stepPanels),
               ),
               _buildVerticalControls(widget.currentStep),
             ],

packages/flutter/test/cupertino/form_row_test.dart

@@ -88,8 +88,8 @@ void main() {
       const CupertinoApp(
         home: Center(
           child: CupertinoFormRow(
-            child: CupertinoTextField(),
             error: error,
+            child: CupertinoTextField(),
           ),
         ),
       ),
@@ -105,8 +105,8 @@ void main() {
       const CupertinoApp(
         home: Center(
           child: CupertinoFormRow(
-            child: CupertinoTextField(),
             helper: helper,
+            child: CupertinoTextField(),
           ),
         ),
       ),
@@ -123,9 +123,9 @@ void main() {
       const CupertinoApp(
         home: Center(
           child: CupertinoFormRow(
-            child: CupertinoTextField(),
             helper: helper,
             error: error,
+            child: CupertinoTextField(),
           ),
         ),
       ),
@@ -145,9 +145,9 @@ void main() {
       const CupertinoApp(
         home: Center(
           child: CupertinoFormRow(
-            child: CupertinoTextField(),
             helper: helper,
             error: error,
+            child: CupertinoTextField(),
           ),
         ),
       ),

packages/flutter/test/cupertino/picker_test.dart

@@ -182,9 +182,9 @@ void main() {
             width: 300.0,
             child: CupertinoPicker(
               itemExtent: 15.0,
-              children: const <Widget>[Text('1'), Text('1')],
               onSelectedItemChanged: (int i) {},
               selectionOverlay: const CupertinoPickerDefaultSelectionOverlay(background: Color(0x12345678)),
+              children: const <Widget>[Text('1'), Text('1')],
             ),
           ),
         ),

packages/flutter/test/material/dropdown_test.dart

@@ -3536,7 +3536,8 @@ void main() {
               value: 'One',
               items: const <DropdownMenuItem<String>>[
                 DropdownMenuItem<String>(
-                  child: Text('One'), value: 'One'
+                  value: 'One',
+                  child: Text('One')
                 ),
               ],
               onChanged: (_) { },

packages/flutter/test/material/expansion_tile_test.dart

@@ -175,13 +175,13 @@ void main() {
                   initiallyExpanded: true,
                   title: TestText('Expanded', key: expandedTitleKey),
                   backgroundColor: Colors.red,
-                  children: const <Widget>[ListTile(title: Text('0'))],
                   trailing: TestIcon(key: expandedIconKey),
+                  children: const <Widget>[ListTile(title: Text('0'))],
                 ),
                 ExpansionTile(
                   title: TestText('Collapsed', key: collapsedTitleKey),
-                  children: const <Widget>[ListTile(title: Text('0'))],
                   trailing: TestIcon(key: collapsedIconKey),
+                  children: const <Widget>[ListTile(title: Text('0'))],
                 ),
               ],
             ),

packages/flutter/test/material/grid_title_test.dart

@@ -19,16 +19,16 @@ void main() {
           subtitle: const Text('Subtitle'),
           trailing: const Icon(Icons.thumb_up),
         ),
-        child: DecoratedBox(
-          decoration: BoxDecoration(
-            color: Colors.green[500],
-          ),
-        ),
         footer: GridTileBar(
           key: footerKey,
           title: const Text('Footer'),
           backgroundColor: Colors.black38,
         ),
+        child: DecoratedBox(
+          decoration: BoxDecoration(
+            color: Colors.green[500],
+          ),
+        ),
       ),
     ));
 

packages/flutter/test/material/popup_menu_test.dart

@@ -556,9 +556,9 @@ void main() {
     testWidgets('PopupMenuButton fails when given both child and icon', (WidgetTester tester) async {
       expect(() {
         PopupMenuButton<int>(
-            child: const Text('heyo'),
             icon: const Icon(Icons.view_carousel),
             itemBuilder: simplePopupMenuItemBuilder,
+            child: const Text('heyo'),
         );
       }, throwsAssertionError);
     });
@@ -1699,8 +1699,8 @@ void main() {
     expect(() {
       PopupMenuButton<int>(
         itemBuilder: (BuildContext context) => <PopupMenuItem<int>>[],
-        child: Container(),
         icon: const Icon(Icons.error),
+        child: Container(),
       );
     }, throwsAssertionError);
   });

packages/flutter/test/material/reorderable_list_test.dart

@@ -1520,10 +1520,10 @@ void main() {
 
   testWidgets('ReorderableListView asserts on both non-null itemExtent and prototypeItem', (WidgetTester tester) async {
     expect(() => ReorderableListView(
-      children: const <Widget>[],
       itemExtent: 30,
       prototypeItem: const SizedBox(),
       onReorder: (int fromIndex, int toIndex) { },
+      children: const <Widget>[],
     ), throwsAssertionError);
   });
 

packages/flutter/test/material/tabs_test.dart

@@ -3789,12 +3789,12 @@ void main() {
               tabs: <Widget>[
                 Tab(
                   icon: Icon(Icons.check,size: 40),
-                  child: Text('1 - OK',style: TextStyle(fontSize: 25),),
                   height: 85,
+                  child: Text('1 - OK',style: TextStyle(fontSize: 25),),
                 ), // icon and child
                 Tab(
-                  child: Text('2 - OK',style: TextStyle(fontSize: 25),),
                   height: 85,
+                  child: Text('2 - OK',style: TextStyle(fontSize: 25),),
                 ), // child
                 Tab(
                   icon: Icon(Icons.done,size: 40),

packages/flutter/test/rendering/object_paint_dispose_test.dart

@@ -16,8 +16,8 @@ void main() {
       child: CustomPaint(
         key: key,
         painter: SimplePainter(),
-        child: const RepaintBoundary(child: Placeholder()),
         foregroundPainter: SimplePainter(),
+        child: const RepaintBoundary(child: Placeholder()),
       ),
     ));
 

packages/flutter/test/widgets/page_view_test.dart

@@ -25,9 +25,9 @@ void main() {
           child: SizedBox.fromSize(
             size: size,
             child: PageView(
-              children: kStates.map<Widget>((String state) => Text(state)).toList(),
               controller: controller,
               onPageChanged: (int page) { },
+              children: kStates.map<Widget>((String state) => Text(state)).toList(),
             ),
           ),
         ),
@@ -70,9 +70,9 @@ void main() {
           child: SizedBox.fromSize(
             size: size,
             child: PageView(
-              children: kStates.map<Widget>((String state) => Text(state)).toList(),
               controller: controller,
               onPageChanged: (int page) { },
+              children: kStates.map<Widget>((String state) => Text(state)).toList(),
             ),
           ),
         ),

packages/flutter/test/widgets/transform_test.dart

@@ -397,8 +397,8 @@ void main() {
     await tester.pumpWidget(
       Transform.translate(
         offset: const Offset(25.0, 25.0),
-        child: const SizedBox(width: 100, height: 100),
         filterQuality: FilterQuality.low,
+        child: const SizedBox(width: 100, height: 100),
       ),
     );
     expect(tester.layers.whereType<ImageFilterLayer>().length, 1);
@@ -408,8 +408,8 @@ void main() {
     await tester.pumpWidget(
       Transform.scale(
         scale: 3.14159,
-        child: const SizedBox(width: 100, height: 100),
         filterQuality: FilterQuality.low,
+        child: const SizedBox(width: 100, height: 100),
       ),
     );
     expect(tester.layers.whereType<ImageFilterLayer>().length, 1);
@@ -419,8 +419,8 @@ void main() {
     await tester.pumpWidget(
       Transform.rotate(
         angle: math.pi / 4,
-        child: const SizedBox(width: 100, height: 100),
         filterQuality: FilterQuality.low,
+        child: const SizedBox(width: 100, height: 100),
       ),
     );
     expect(tester.layers.whereType<ImageFilterLayer>().length, 1);
@@ -430,8 +430,8 @@ void main() {
     await tester.pumpWidget(
       Transform.rotate(
         angle: math.pi / 4,
-        child: const SizedBox(width: 100, height: 100),
         filterQuality: FilterQuality.low,
+        child: const SizedBox(width: 100, height: 100),
       ),
     );
     expect(tester.layers.whereType<ImageFilterLayer>(), hasLength(1));
@@ -455,8 +455,8 @@ void main() {
     await tester.pumpWidget(
       Transform.rotate(
         angle: math.pi / 4,
-        child: const SizedBox(width: 100, height: 100),
         filterQuality: FilterQuality.low,
+        child: const SizedBox(width: 100, height: 100),
       ),
     );
     expect(tester.layers.whereType<ImageFilterLayer>(), hasLength(1));
@@ -483,18 +483,18 @@ void main() {
             ),
             Transform.rotate(
               angle: math.pi / 6,
-              child: Center(child: Container(width: 100, height: 20, color: const Color(0xff00ff00))),
               filterQuality: FilterQuality.low,
+              child: Center(child: Container(width: 100, height: 20, color: const Color(0xff00ff00))),
             ),
             Transform.scale(
               scale: 1.5,
-              child: Center(child: Container(width: 100, height: 20, color: const Color(0xff00ff00))),
               filterQuality: FilterQuality.low,
+              child: Center(child: Container(width: 100, height: 20, color: const Color(0xff00ff00))),
             ),
             Transform.translate(
               offset: const Offset(20.0, 60.0),
-              child: Center(child: Container(width: 100, height: 20, color: const Color(0xff00ff00))),
               filterQuality: FilterQuality.low,
+              child: Center(child: Container(width: 100, height: 20, color: const Color(0xff00ff00))),
             ),
           ],
         ),

packages/flutter/test/widgets/visibility_test.dart

@@ -106,9 +106,9 @@ void main() {
 
     await tester.pumpWidget(Center(
       child: Visibility(
-        child: testChild,
         replacement: const Placeholder(),
         visible: false,
+        child: testChild,
       ),
     ));
     expect(find.byType(Text, skipOffstage: false), findsNothing);
@@ -123,8 +123,8 @@ void main() {
 
     await tester.pumpWidget(Center(
       child: Visibility(
-        child: testChild,
         replacement: const Placeholder(),
+        child: testChild,
       ),
     ));
     expect(find.byType(Text, skipOffstage: false), findsOneWidget);