Prepare more of dev for use_super_parameters (#101073)

dev/benchmarks/complex_layout/lib/main.dart

@@ -14,7 +14,7 @@ void main() {
 enum ScrollMode { complex, tile }
 
 class ComplexLayoutApp extends StatefulWidget {
-  const ComplexLayoutApp({Key? key}) : super(key: key);
+  const ComplexLayoutApp({super.key});
 
   @override
   ComplexLayoutAppState createState() => ComplexLayoutAppState();
@@ -55,7 +55,7 @@ class ComplexLayoutAppState extends State<ComplexLayoutApp> {
 }
 
 class TileScrollLayout extends StatelessWidget {
-  const TileScrollLayout({ Key? key }) : super(key: key);
+  const TileScrollLayout({ super.key });
 
   @override
   Widget build(BuildContext context) {
@@ -81,7 +81,7 @@ class TileScrollLayout extends StatelessWidget {
 }
 
 class ComplexLayout extends StatefulWidget {
-  const ComplexLayout({ Key? key }) : super(key: key);
+  const ComplexLayout({ super.key });
 
   @override
   ComplexLayoutState createState() => ComplexLayoutState();
@@ -129,7 +129,7 @@ class ComplexLayoutState extends State<ComplexLayout> {
 }
 
 class TopBarMenu extends StatelessWidget {
-  const TopBarMenu({Key? key}) : super(key: key);
+  const TopBarMenu({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -182,7 +182,7 @@ class TopBarMenu extends StatelessWidget {
 }
 
 class MenuItemWithIcon extends StatelessWidget {
-  const MenuItemWithIcon(this.icon, this.title, this.subtitle, {Key? key}) : super(key: key);
+  const MenuItemWithIcon(this.icon, this.title, this.subtitle, {super.key});
 
   final IconData icon;
   final String title;
@@ -204,7 +204,7 @@ class MenuItemWithIcon extends StatelessWidget {
 }
 
 class FancyImageItem extends StatelessWidget {
-  const FancyImageItem(this.index, {Key? key}) : super(key: key);
+  const FancyImageItem(this.index, {super.key});
 
   final int index;
 
@@ -228,7 +228,7 @@ class FancyImageItem extends StatelessWidget {
 }
 
 class FancyGalleryItem extends StatelessWidget {
-  const FancyGalleryItem(this.index, {Key? key}) : super(key: key);
+  const FancyGalleryItem(this.index, {super.key});
 
   final int index;
   @override
@@ -250,7 +250,7 @@ class FancyGalleryItem extends StatelessWidget {
 }
 
 class InfoBar extends StatelessWidget {
-  const InfoBar({Key? key}) : super(key: key);
+  const InfoBar({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -268,7 +268,7 @@ class InfoBar extends StatelessWidget {
 }
 
 class IconBar extends StatelessWidget {
-  const IconBar({Key? key}) : super(key: key);
+  const IconBar({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -287,7 +287,7 @@ class IconBar extends StatelessWidget {
 }
 
 class IconWithText extends StatelessWidget {
-  const IconWithText(this.icon, this.title, {Key? key}) : super(key: key);
+  const IconWithText(this.icon, this.title, {super.key});
 
   final IconData icon;
   final String title;
@@ -308,7 +308,7 @@ class IconWithText extends StatelessWidget {
 }
 
 class MiniIconWithText extends StatelessWidget {
-  const MiniIconWithText(this.icon, this.title, {Key? key}) : super(key: key);
+  const MiniIconWithText(this.icon, this.title, {super.key});
 
   final IconData icon;
   final String title;
@@ -337,7 +337,7 @@ class MiniIconWithText extends StatelessWidget {
 }
 
 class FatDivider extends StatelessWidget {
-  const FatDivider({Key? key}) : super(key: key);
+  const FatDivider({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -349,7 +349,7 @@ class FatDivider extends StatelessWidget {
 }
 
 class UserHeader extends StatelessWidget {
-  const UserHeader(this.userName, {Key? key}) : super(key: key);
+  const UserHeader(this.userName, {super.key});
 
   final String userName;
 
@@ -397,7 +397,7 @@ class UserHeader extends StatelessWidget {
 }
 
 class ItemDescription extends StatelessWidget {
-  const ItemDescription({Key? key}) : super(key: key);
+  const ItemDescription({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -409,7 +409,7 @@ class ItemDescription extends StatelessWidget {
 }
 
 class ItemImageBox extends StatelessWidget {
-  const ItemImageBox({Key? key}) : super(key: key);
+  const ItemImageBox({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -490,7 +490,7 @@ class ItemImageBox extends StatelessWidget {
 }
 
 class ItemGalleryBox extends StatelessWidget {
-  const ItemGalleryBox(this.index, {Key? key}) : super(key: key);
+  const ItemGalleryBox(this.index, {super.key});
 
   final int index;
 
@@ -559,7 +559,7 @@ class ItemGalleryBox extends StatelessWidget {
 }
 
 class BottomBar extends StatelessWidget {
-  const BottomBar({Key? key}) : super(key: key);
+  const BottomBar({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -586,7 +586,7 @@ class BottomBar extends StatelessWidget {
 }
 
 class BottomBarButton extends StatelessWidget {
-  const BottomBarButton(this.icon, this.title, {Key? key}) : super(key: key);
+  const BottomBarButton(this.icon, this.title, {super.key});
 
   final IconData icon;
   final String title;
@@ -609,7 +609,7 @@ class BottomBarButton extends StatelessWidget {
 }
 
 class GalleryDrawer extends StatelessWidget {
-  const GalleryDrawer({ Key? key }) : super(key: key);
+  const GalleryDrawer({ super.key });
 
   void _changeTheme(BuildContext context, bool value) {
     ComplexLayoutApp.of(context)?.lightTheme = value;
@@ -680,7 +680,7 @@ class GalleryDrawer extends StatelessWidget {
 }
 
 class FancyDrawerHeader extends StatelessWidget {
-  const FancyDrawerHeader({Key? key}) : super(key: key);
+  const FancyDrawerHeader({super.key});
 
   @override
   Widget build(BuildContext context) {

dev/benchmarks/macrobenchmarks/lib/main.dart

@@ -35,7 +35,7 @@ const String kMacrobenchmarks = 'Macrobenchmarks';
 void main() => runApp(const MacrobenchmarksApp());
 
 class MacrobenchmarksApp extends StatelessWidget {
-  const MacrobenchmarksApp({Key? key, this.initialRoute = '/'}) : super(key: key);
+  const MacrobenchmarksApp({super.key, this.initialRoute = '/'});
 
   @override
   Widget build(BuildContext context) {
@@ -77,7 +77,7 @@ class MacrobenchmarksApp extends StatelessWidget {
 }
 
 class HomePage extends StatelessWidget {
-  const HomePage({Key? key}) : super(key: key);
+  const HomePage({super.key});
 
   @override
   Widget build(BuildContext context) {

dev/benchmarks/macrobenchmarks/lib/src/animated_image.dart

@@ -5,7 +5,7 @@
 import 'package:flutter/material.dart';
 
 class AnimatedImagePage extends StatelessWidget {
-  const AnimatedImagePage({Key? key, this.onFrame}) : super(key: key);
+  const AnimatedImagePage({super.key, this.onFrame});
 
   final ValueChanged<int>? onFrame;
 

dev/benchmarks/macrobenchmarks/lib/src/animated_placeholder.dart

@@ -24,7 +24,7 @@ const String kBlueSquare = 'iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAYAAAAeP4ixAAAASEl'
 /// A 10x10 grid of animated looping placeholder gifts that fade into a
 /// blue square.
 class AnimatedPlaceholderPage extends StatelessWidget {
-  const AnimatedPlaceholderPage({Key? key}) : super(key: key);
+  const AnimatedPlaceholderPage({super.key});
 
   @override
   Widget build(BuildContext context) {

dev/benchmarks/macrobenchmarks/lib/src/animation_with_microtasks.dart

@@ -5,7 +5,7 @@
 import 'package:flutter/material.dart';
 
 class AnimationWithMicrotasks extends StatefulWidget {
-  const AnimationWithMicrotasks({Key? key}) : super(key: key);
+  const AnimationWithMicrotasks({super.key});
 
   @override
   State<AnimationWithMicrotasks> createState() => _AnimationWithMicrotasksState();

dev/benchmarks/macrobenchmarks/lib/src/backdrop_filter.dart

@@ -7,7 +7,7 @@ import 'dart:ui';
 import 'package:flutter/material.dart';
 
 class BackdropFilterPage extends StatefulWidget {
-  const BackdropFilterPage({Key? key}) : super(key: key);
+  const BackdropFilterPage({super.key});
 
   @override
   State<BackdropFilterPage> createState() => _BackdropFilterPageState();

dev/benchmarks/macrobenchmarks/lib/src/color_filter_and_fade.dart

@@ -9,7 +9,7 @@ import 'package:flutter/material.dart';
 // This tests whether the Opacity layer raster cache works with color filters.
 // See https://github.com/flutter/flutter/issues/51975.
 class ColorFilterAndFadePage extends StatefulWidget {
-  const ColorFilterAndFadePage({Key? key}) : super(key: key);
+  const ColorFilterAndFadePage({super.key});
 
   @override
   State<ColorFilterAndFadePage> createState() => _ColorFilterAndFadePageState();

dev/benchmarks/macrobenchmarks/lib/src/color_filter_cache.dart

@@ -7,7 +7,7 @@ import 'dart:ui';
 import 'package:flutter/material.dart';
 
 class ColorFilterCachePage extends StatefulWidget {
-  const ColorFilterCachePage({Key? key}) : super(key: key);
+  const ColorFilterCachePage({super.key});
   @override
   State<ColorFilterCachePage> createState() => _ColorFilterCachePageState();
 }

dev/benchmarks/macrobenchmarks/lib/src/cubic_bezier.dart

@@ -8,7 +8,7 @@ import 'package:flutter/material.dart';
 
 // Based on https://github.com/eseidelGoogle/bezier_perf/blob/master/lib/main.dart
 class CubicBezierPage extends StatelessWidget {
-  const CubicBezierPage({Key? key}) : super(key: key);
+  const CubicBezierPage({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -24,7 +24,7 @@ class CubicBezierPage extends StatelessWidget {
 }
 
 class Bezier extends StatelessWidget {
-  const Bezier(this.color, this.scale, {Key? key, this.blur = 0.0, this.delay = 0.0}) : super(key: key);
+  const Bezier(this.color, this.scale, {super.key, this.blur = 0.0, this.delay = 0.0});
 
   final Color color;
   final double scale;
@@ -93,7 +93,7 @@ class PathDetail {
 }
 
 class AnimatedBezier extends StatefulWidget {
-  const AnimatedBezier(this.color, this.scale, {Key? key, this.blur = 0.0}) : super(key: key);
+  const AnimatedBezier(this.color, this.scale, {super.key, this.blur = 0.0});
 
   final Color color;
   final double scale;

dev/benchmarks/macrobenchmarks/lib/src/cull_opacity.dart

@@ -5,7 +5,7 @@
 import 'package:flutter/material.dart';
 
 class CullOpacityPage extends StatefulWidget {
-  const CullOpacityPage({Key? key}) : super(key: key);
+  const CullOpacityPage({super.key});
 
   @override
   State<StatefulWidget> createState() => _CullOpacityPageState();

dev/benchmarks/macrobenchmarks/lib/src/filtered_child_animation.dart

@@ -13,10 +13,10 @@ enum FilterType {
 
 class FilteredChildAnimationPage extends StatefulWidget {
   const FilteredChildAnimationPage(this.initialFilterType, {
-    Key? key,
+    super.key,
     this.initialComplexChild = true,
     this.initialUseRepaintBoundary = true,
-  }) : super(key: key);
+  });
 
   final FilterType initialFilterType;
   final bool initialComplexChild;

dev/benchmarks/macrobenchmarks/lib/src/fullscreen_textfield.dart

@@ -48,7 +48,7 @@ const String textLotsOfText = 'Lorem ipsum dolor sit amet, consectetur '
   '🦻 👃 🫀 🫁 🧠 🦷 🦴 👀 👁 👅 👄 💋 🩸';
 
 class TextFieldPage extends StatelessWidget {
-  const TextFieldPage({Key? key}) : super(key: key);
+  const TextFieldPage({super.key});
 
   @override
   Widget build(BuildContext context) {

dev/benchmarks/macrobenchmarks/lib/src/heavy_grid_view.dart

@@ -5,7 +5,7 @@
 import 'package:flutter/material.dart';
 
 class HeavyGridViewPage extends StatelessWidget {
-  const HeavyGridViewPage({Key? key}) : super(key: key);
+  const HeavyGridViewPage({super.key});
 
   @override
   Widget build(BuildContext context) {

dev/benchmarks/macrobenchmarks/lib/src/large_image_changer.dart

@@ -8,7 +8,7 @@ import 'package:flutter/material.dart';
 
 /// Displays a new (from image cache's perspective) large image every 500ms.
 class LargeImageChangerPage extends StatefulWidget {
-  const LargeImageChangerPage({Key? key}) : super(key: key);
+  const LargeImageChangerPage({super.key});
 
   @override
   State<LargeImageChangerPage> createState() => _LargeImageChangerState();

dev/benchmarks/macrobenchmarks/lib/src/large_images.dart

@@ -7,7 +7,7 @@ import 'dart:typed_data';
 import 'package:flutter/material.dart';
 
 class LargeImagesPage extends StatelessWidget {
-  const LargeImagesPage({Key? key}) : super(key: key);
+  const LargeImagesPage({super.key});
 
   @override
   Widget build(BuildContext context) {

dev/benchmarks/macrobenchmarks/lib/src/multi_widget_construction.dart

@@ -5,8 +5,7 @@
 import 'package:flutter/material.dart';
 
 class MultiWidgetConstructTable extends StatefulWidget {
-  const MultiWidgetConstructTable(this.columnCount, this.rowCount, {Key? key})
-      : super(key: key);
+  const MultiWidgetConstructTable(this.columnCount, this.rowCount, {super.key});
 
   final int columnCount;
   final int rowCount;
@@ -98,8 +97,7 @@ class _MultiWidgetConstructTableState extends State<MultiWidgetConstructTable>
 
 // This class is intended to break the original Widget tree
 class MyContainer extends StatelessWidget {
-  const MyContainer({required this.color, required this.child, required this.constraints, Key? key})
-      : super(key: key);
+  const MyContainer({required this.color, required this.child, required this.constraints, super.key});
   final Color color;
   final Widget child;
   final BoxConstraints constraints;

dev/benchmarks/macrobenchmarks/lib/src/opacity_peephole.dart

@@ -12,7 +12,7 @@ import '../common.dart';
 // combinations of children that can apply it themselves.
 // See https://github.com/flutter/flutter/issues/75697
 class OpacityPeepholePage extends StatelessWidget {
-  const OpacityPeepholePage({Key? key}) : super(key: key);
+  const OpacityPeepholePage({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -419,7 +419,7 @@ Map<String, WidgetBuilder> opacityPeepholeRoutes = <String, WidgetBuilder>{
 };
 
 class VariantPage extends StatefulWidget {
-  const VariantPage({Key? key, required this.variant}) : super(key: key);
+  const VariantPage({super.key, required this.variant});
 
   final OpacityPeepholeCase variant;
 

dev/benchmarks/macrobenchmarks/lib/src/picture_cache.dart

@@ -5,7 +5,7 @@
 import 'package:flutter/material.dart';
 
 class PictureCachePage extends StatelessWidget {
-  const PictureCachePage({Key? key}) : super(key: key);
+  const PictureCachePage({super.key});
 
   static const List<String> kTabNames = <String>['1', '2', '3', '4', '5'];
 
@@ -45,8 +45,7 @@ class PictureCachePage extends StatelessWidget {
 }
 
 class ListItem extends StatelessWidget {
-  const ListItem({Key? key, required this.index})
-      : super(key: key);
+  const ListItem({super.key, required this.index});
 
   final int index;
 

dev/benchmarks/macrobenchmarks/lib/src/picture_cache_complexity_scoring.dart

@@ -5,7 +5,7 @@
 import 'package:flutter/material.dart';
 
 class PictureCacheComplexityScoringPage extends StatelessWidget {
-  const PictureCacheComplexityScoringPage({Key? key}) : super(key: key);
+  const PictureCacheComplexityScoringPage({super.key});
 
   static const List<String> kTabNames = <String>['1', '2'];
 

dev/benchmarks/macrobenchmarks/lib/src/post_backdrop_filter.dart

@@ -7,7 +7,7 @@ import 'dart:ui';
 import 'package:flutter/material.dart';
 
 class PostBackdropFilterPage extends StatefulWidget {
-  const PostBackdropFilterPage({Key? key}) : super(key: key);
+  const PostBackdropFilterPage({super.key});
 
   @override
   State<PostBackdropFilterPage> createState() => _PostBackdropFilterPageState();

dev/benchmarks/macrobenchmarks/lib/src/shader_mask_cache.dart

@@ -8,7 +8,7 @@ import 'package:flutter/material.dart';
 import 'picture_cache.dart';
 
 class ShaderMaskCachePage extends StatefulWidget {
-  const ShaderMaskCachePage({Key? key}) : super(key: key);
+  const ShaderMaskCachePage({super.key});
   @override
   State<ShaderMaskCachePage> createState() => _ShaderMaskCachePageState();
 }

dev/benchmarks/macrobenchmarks/lib/src/simple_animation.dart

@@ -5,7 +5,7 @@
 import 'package:flutter/material.dart';
 
 class SimpleAnimationPage extends StatelessWidget {
-  const SimpleAnimationPage({Key? key}) : super(key: key);
+  const SimpleAnimationPage({super.key});
 
   @override
   Widget build(BuildContext context) {

dev/benchmarks/macrobenchmarks/lib/src/simple_scroll.dart

@@ -5,7 +5,7 @@
 import 'package:flutter/material.dart';
 
 class SimpleScroll extends StatelessWidget {
-  const SimpleScroll({Key? key}) : super(key: key);
+  const SimpleScroll({super.key});
 
   @override
   Widget build(BuildContext context) {

dev/benchmarks/macrobenchmarks/lib/src/stack_size.dart

@@ -81,7 +81,7 @@ final GetStackPointerCallback getStackPointer = () {
 }();
 
 class StackSizePage extends StatelessWidget {
-  const StackSizePage({Key? key}) : super(key: key);
+  const StackSizePage({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -100,7 +100,7 @@ class StackSizePage extends StatelessWidget {
 }
 
 class ParentWidget extends StatelessWidget {
-  const ParentWidget({Key? key}) : super(key: key);
+  const ParentWidget({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -110,7 +110,7 @@ class ParentWidget extends StatelessWidget {
 }
 
 class ChildWidget extends StatelessWidget {
-  const ChildWidget({required this.parentStackSize, Key? key}) : super(key: key);
+  const ChildWidget({required this.parentStackSize, super.key});
   final int parentStackSize;
 
   @override

dev/benchmarks/macrobenchmarks/lib/src/text.dart

@@ -5,7 +5,7 @@
 import 'package:flutter/material.dart';
 
 class TextPage extends StatelessWidget {
-  const TextPage({Key? key}) : super(key: key);
+  const TextPage({super.key});
 
   @override
   Widget build(BuildContext context) {

dev/benchmarks/macrobenchmarks/lib/src/web/bench_build_image.dart

@@ -52,7 +52,7 @@ class BenchBuildImage extends WidgetRecorder {
 }
 
 class _RotatingWidget extends StatefulWidget {
-  const _RotatingWidget({required this.child, Key? key}) : super(key: key);
+  const _RotatingWidget({required this.child});
 
   final Widget child;
 

dev/benchmarks/macrobenchmarks/lib/src/web/bench_card_infinite_scroll.dart

@@ -35,7 +35,7 @@ class BenchCardInfiniteScroll extends WidgetRecorder {
 }
 
 class _InfiniteScrollCards extends StatefulWidget {
-  const _InfiniteScrollCards(this.initialOffset, this.finalOffset, {Key? key}) : super(key: key);
+  const _InfiniteScrollCards(this.initialOffset, this.finalOffset);
 
   final double initialOffset;
   final double finalOffset;

dev/benchmarks/macrobenchmarks/lib/src/web/bench_link_infinite_scroll.dart

@@ -36,7 +36,7 @@ class BenchLinkInfiniteScroll extends WidgetRecorder {
 }
 
 class _InfiniteScrollLinks extends StatefulWidget {
-  const _InfiniteScrollLinks(this.initialOffset, this.finalOffset, {Key? key}) : super(key: key);
+  const _InfiniteScrollLinks(this.initialOffset, this.finalOffset);
 
   final double initialOffset;
   final double finalOffset;

dev/benchmarks/macrobenchmarks/lib/src/web/bench_pageview_scroll_linethrough.dart

@@ -26,7 +26,7 @@ class BenchPageViewScrollLineThrough extends WidgetRecorder {
 }
 
 class _MyScrollContainer extends StatefulWidget {
-  const _MyScrollContainer({Key? key}) : super(key: key);
+  const _MyScrollContainer();
 
   @override
   State<_MyScrollContainer> createState() => _MyScrollContainerState();

dev/benchmarks/macrobenchmarks/lib/src/web/bench_text_layout.dart

@@ -336,14 +336,13 @@ final List<Palette> allPalettes = <Palette>[
 
 class ColorItem extends StatelessWidget {
   const ColorItem({
-    Key? key,
+    super.key,
     required this.index,
     required this.color,
     this.prefix = '',
   })  : assert(index != null),
         assert(color != null),
-        assert(prefix != null),
-        super(key: key);
+        assert(prefix != null);
 
   final int index;
   final Color color;
@@ -378,9 +377,9 @@ class ColorItem extends StatelessWidget {
 
 class PaletteTabView extends StatelessWidget {
   const PaletteTabView({
-    Key? key,
+    super.key,
     required this.colors,
-  }) : super(key: key);
+  });
 
   final Palette colors;
 
@@ -431,7 +430,7 @@ class PaletteTabView extends StatelessWidget {
 }
 
 class ColorsDemo extends StatelessWidget {
-  const ColorsDemo({Key? key}) : super(key: key);
+  const ColorsDemo({super.key});
 
   @override
   Widget build(BuildContext context) {

dev/benchmarks/macrobenchmarks/lib/src/web/bench_wrapbox_scroll.dart

@@ -29,7 +29,7 @@ class BenchWrapBoxScroll extends WidgetRecorder {
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key}) : super(key: key);
+  const MyHomePage({super.key});
 
   @override
   State<MyHomePage> createState() => _MyHomePageState();
@@ -82,7 +82,7 @@ class _MyHomePageState extends State<MyHomePage> {
 }
 
 class ProductPreview extends StatelessWidget {
-  const ProductPreview(this.previewIndex, {Key? key}) : super(key: key);
+  const ProductPreview(this.previewIndex, {super.key});
 
   final int previewIndex;
 
@@ -141,9 +141,9 @@ class ProductPreview extends StatelessWidget {
 
 class ProductOption extends StatelessWidget {
   const ProductOption({
-    Key? key,
+    super.key,
     required this.optionText,
-  }) : super(key: key);
+  });
 
   final String optionText;
 

dev/benchmarks/microbenchmarks/lib/gestures/apps/button_matrix_app.dart

@@ -5,7 +5,7 @@
 import 'package:flutter/material.dart';
 
 class ButtonMatrixApp extends StatefulWidget {
-  const ButtonMatrixApp({Key? key}) : super(key: key);
+  const ButtonMatrixApp({super.key});
 
   @override
   ButtonMatrixAppState createState() => ButtonMatrixAppState();

dev/benchmarks/multiple_flutters/module/lib/main.dart

@@ -15,7 +15,7 @@ void topMain() => runApp(const MyApp(Colors.green));
 void bottomMain() => runApp(const MyApp(Colors.purple));
 
 class MyApp extends StatelessWidget {
-  const MyApp(this.color, {Key? key}) : super(key: key);
+  const MyApp(this.color, {super.key});
 
   final Color color;
 
@@ -32,7 +32,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key, this.title}) : super(key: key);
+  const MyHomePage({super.key, this.title});
   final String? title;
 
   @override

dev/benchmarks/platform_channels_benchmarks/lib/main.dart

@@ -275,7 +275,7 @@ Future<void> _runTests() async {
 }
 
 class _BenchmarkWidget extends StatefulWidget {
-  const _BenchmarkWidget(this.tests, {Key? key}) : super(key: key);
+  const _BenchmarkWidget(this.tests);
 
   final Future<void> Function() tests;
 

dev/benchmarks/test_apps/stocks/lib/i18n/stock_strings_en.dart

@@ -10,7 +10,7 @@ import 'stock_strings.dart';
 
 /// The translations for English (`en`).
 class StockStringsEn extends StockStrings {
-  StockStringsEn([String locale = 'en']) : super(locale);
+  StockStringsEn([super.locale = 'en']);
 
   @override
   String get title => 'Stocks';

dev/benchmarks/test_apps/stocks/lib/i18n/stock_strings_es.dart

@@ -10,7 +10,7 @@ import 'stock_strings.dart';
 
 /// The translations for Spanish Castilian (`es`).
 class StockStringsEs extends StockStrings {
-  StockStringsEs([String locale = 'es']) : super(locale);
+  StockStringsEs([super.locale = 'es']);
 
   @override
   String get title => 'Acciones';

dev/benchmarks/test_apps/stocks/lib/main.dart

@@ -20,7 +20,7 @@ import 'stock_symbol_viewer.dart';
 import 'stock_types.dart';
 
 class StocksApp extends StatefulWidget {
-  const StocksApp({Key? key}) : super(key: key);
+  const StocksApp({super.key});
 
   @override
   StocksAppState createState() => StocksAppState();

dev/benchmarks/test_apps/stocks/lib/stock_arrow.dart

@@ -56,7 +56,7 @@ class StockArrowPainter extends CustomPainter {
 }
 
 class StockArrow extends StatelessWidget {
-  const StockArrow({ Key? key, required this.percentChange }) : super(key: key);
+  const StockArrow({ super.key, required this.percentChange });
 
   final double percentChange;
 

dev/benchmarks/test_apps/stocks/lib/stock_home.dart

@@ -52,7 +52,7 @@ class _NotImplementedDialog extends StatelessWidget {
 }
 
 class StockHome extends StatefulWidget {
-  const StockHome(this.stocks, this.configuration, this.updater, {Key? key}) : super(key: key);
+  const StockHome(this.stocks, this.configuration, this.updater, {super.key});
 
   final StockData stocks;
   final StockConfiguration configuration;

dev/benchmarks/test_apps/stocks/lib/stock_list.dart

@@ -9,12 +9,12 @@ import 'stock_row.dart';
 
 class StockList extends StatelessWidget {
   const StockList({
-    Key? key,
+    super.key,
     required this.stocks,
     required this.onOpen,
     required this.onShow,
     required this.onAction,
-  }) : super(key: key);
+  });
 
   final List<Stock> stocks;
   final StockRowActionCallback onOpen;

dev/benchmarks/test_apps/stocks/lib/stock_settings.dart

@@ -7,7 +7,7 @@ import 'package:flutter/material.dart';
 import 'stock_types.dart';
 
 class StockSettings extends StatefulWidget {
-  const StockSettings(this.configuration, this.updater, {Key? key}) : super(key: key);
+  const StockSettings(this.configuration, this.updater, {super.key});
 
   final StockConfiguration configuration;
   final ValueChanged<StockConfiguration> updater;

dev/benchmarks/test_apps/stocks/lib/stock_symbol_viewer.dart

@@ -69,10 +69,10 @@ class _StockSymbolView extends StatelessWidget {
 
 class StockSymbolPage extends StatelessWidget {
   const StockSymbolPage({
-    Key? key,
+    super.key,
     required this.symbol,
     required this.stocks,
-  }) : super(key: key);
+  });
 
   final String symbol;
   final StockData stocks;
@@ -121,9 +121,9 @@ class StockSymbolPage extends StatelessWidget {
 
 class StockSymbolBottomSheet extends StatelessWidget {
   const StockSymbolBottomSheet({
-    Key? key,
+    super.key,
     required this.stock,
-  }) : super(key: key);
+  });
 
   final Stock stock;
 

dev/conductor/core/lib/src/next.dart

@@ -74,12 +74,9 @@ class NextContext extends Context {
   const NextContext({
     required this.autoAccept,
     required this.force,
-    required Checkouts checkouts,
-    required File stateFile,
-  }) : super(
-    checkouts: checkouts,
-    stateFile: stateFile,
-  );
+    required super.checkouts,
+    required super.stateFile,
+  });
 
   final bool autoAccept;
   final bool force;

dev/conductor/core/lib/src/repository.dart

@@ -467,26 +467,20 @@ abstract class Repository {
 class FrameworkRepository extends Repository {
   FrameworkRepository(
     this.checkouts, {
-    String name = 'framework',
-    Remote upstreamRemote = const Remote(
+    super.name = 'framework',
+    super.upstreamRemote = const Remote(
         name: RemoteName.upstream, url: FrameworkRepository.defaultUpstream),
-    bool localUpstream = false,
-    String? previousCheckoutLocation,
-    String initialRef = FrameworkRepository.defaultBranch,
-    Remote? mirrorRemote,
+    super.localUpstream,
+    super.previousCheckoutLocation,
+    String super.initialRef = FrameworkRepository.defaultBranch,
+    super.mirrorRemote,
     List<String>? additionalRequiredLocalBranches,
   }) : super(
-          name: name,
-          upstreamRemote: upstreamRemote,
-          mirrorRemote: mirrorRemote,
-          initialRef: initialRef,
           fileSystem: checkouts.fileSystem,
-          localUpstream: localUpstream,
           parentDirectory: checkouts.directory,
           platform: checkouts.platform,
           processManager: checkouts.processManager,
           stdio: checkouts.stdio,
-          previousCheckoutLocation: previousCheckoutLocation,
           requiredLocalBranches: <String>[
             ...?additionalRequiredLocalBranches,
             ...kReleaseChannels,
@@ -757,26 +751,20 @@ class HostFrameworkRepository extends FrameworkRepository {
 class EngineRepository extends Repository {
   EngineRepository(
     this.checkouts, {
-    String name = 'engine',
-    String initialRef = EngineRepository.defaultBranch,
-    Remote upstreamRemote = const Remote(
+    super.name = 'engine',
+    String super.initialRef = EngineRepository.defaultBranch,
+    super.upstreamRemote = const Remote(
         name: RemoteName.upstream, url: EngineRepository.defaultUpstream),
-    bool localUpstream = false,
-    String? previousCheckoutLocation,
-    Remote? mirrorRemote,
+    super.localUpstream,
+    super.previousCheckoutLocation,
+    super.mirrorRemote,
     List<String>? additionalRequiredLocalBranches,
   }) : super(
-          name: name,
-          upstreamRemote: upstreamRemote,
-          mirrorRemote: mirrorRemote,
-          initialRef: initialRef,
           fileSystem: checkouts.fileSystem,
-          localUpstream: localUpstream,
           parentDirectory: checkouts.directory,
           platform: checkouts.platform,
           processManager: checkouts.processManager,
           stdio: checkouts.stdio,
-          previousCheckoutLocation: previousCheckoutLocation,
           requiredLocalBranches: additionalRequiredLocalBranches ?? const <String>[],
         );
 

dev/conductor/core/lib/src/start.dart

@@ -227,8 +227,8 @@ class StartContext extends Context {
     required this.conductorVersion,
     required this.processManager,
     required this.releaseChannel,
-    required Checkouts checkouts,
-    required File stateFile,
+    required super.checkouts,
+    required super.stateFile,
     this.force = false,
     this.versionOverride,
   }) : git = Git(processManager),
@@ -254,10 +254,6 @@ class StartContext extends Context {
       name: RemoteName.mirror,
       url: frameworkMirror,
     ),
-  ),
-  super(
-    checkouts: checkouts,
-    stateFile: stateFile,
   );
 
   final String candidateBranch;

dev/conductor/core/test/codesign_test.dart

@@ -5,7 +5,6 @@
 import 'package:args/command_runner.dart';
 import 'package:conductor_core/src/codesign.dart';
 import 'package:conductor_core/src/repository.dart';
-import 'package:file/file.dart';
 import 'package:file/memory.dart';
 import 'package:platform/platform.dart';
 
@@ -512,11 +511,11 @@ void main() {
 
 class FakeCodesignCommand extends CodesignCommand {
   FakeCodesignCommand({
-    required Checkouts checkouts,
+    required super.checkouts,
     required this.binariesWithEntitlements,
     required this.binariesWithoutEntitlements,
-    required Directory flutterRoot,
-  }) : super(checkouts: checkouts, flutterRoot: flutterRoot);
+    required super.flutterRoot,
+  });
 
   @override
   final Future<List<String>> binariesWithEntitlements;

dev/conductor/core/test/next_test.dart

@@ -1196,16 +1196,9 @@ class _TestRepository extends Repository {
 
 class _TestNextContext extends NextContext {
   const _TestNextContext({
-    bool autoAccept = false,
-    bool force = false,
-    required File stateFile,
-    required Checkouts checkouts,
-  }) : super(
-    autoAccept: autoAccept,
-    force: force,
-    checkouts: checkouts,
-    stateFile: stateFile,
-  );
+    required super.stateFile,
+    required super.checkouts,
+  }) : super(autoAccept: false, force: false);
 
   @override
   Future<bool> prompt(String message) {

dev/customer_testing/pubspec.yaml

@@ -2,7 +2,7 @@ name: customer_testing
 description: Tool to run the tests listed in the flutter/tests repository.
 
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.17.0-0 <3.0.0'
 
 dependencies:
   args: 2.3.0

dev/forbidden_from_release_tests/pubspec.yaml

@@ -2,7 +2,7 @@ name: forbidden_from_release_tests
 publish_to: 'none'
 
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.17.0-0 <3.0.0'
 
 dependencies:
   args: 2.3.0

dev/integration_tests/abstract_method_smoke_test/lib/main.dart

@@ -14,7 +14,7 @@ Future<void> main() async {
 }
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -29,7 +29,7 @@ class MyApp extends StatelessWidget {
 }
 
 class HomePage extends StatefulWidget {
-  const HomePage({Key? key}) : super(key: key);
+  const HomePage({super.key});
 
   @override
   State<HomePage> createState() => _HomePage();
@@ -55,7 +55,7 @@ class _HomePage extends State<HomePage> {
 }
 
 class SecondPage extends StatelessWidget {
-  const SecondPage({Key? key}) : super(key: key);
+  const SecondPage({super.key});
 
   @override
   Widget build(BuildContext context) {

dev/integration_tests/android_views/lib/main.dart

@@ -20,7 +20,7 @@ void main() {
 }
 
 class Home extends StatelessWidget {
-  const Home({Key? key}) : super(key: key);
+  const Home({super.key});
 
   @override
   Widget build(BuildContext context) {

dev/integration_tests/android_views/lib/motion_events_page.dart

@@ -44,7 +44,7 @@ class FutureDataHandler {
 FutureDataHandler driverDataHandler = FutureDataHandler();
 
 class MotionEventsBody extends StatefulWidget {
-  const MotionEventsBody({Key? key}) : super(key: key);
+  const MotionEventsBody({super.key});
 
   @override
   State createState() => MotionEventsBodyState();
@@ -259,7 +259,7 @@ class MotionEventsBodyState extends State<MotionEventsBody> {
 }
 
 class TouchEventDiff extends StatelessWidget {
-  const TouchEventDiff(this.originalEvent, this.synthesizedEvent, {Key? key}) : super(key: key);
+  const TouchEventDiff(this.originalEvent, this.synthesizedEvent, {super.key});
 
   final Map<String, dynamic> originalEvent;
   final Map<String, dynamic> synthesizedEvent;

dev/integration_tests/android_views/lib/page.dart

@@ -8,7 +8,7 @@ import 'package:flutter/material.dart';
 //
 /// A testing page has to override this in order to be put as one of the items in the main page.
 abstract class PageWidget extends StatelessWidget {
-  const PageWidget(this.title, this.tileKey, {Key? key}) : super(key: key);
+  const PageWidget(this.title, this.tileKey, {super.key});
 
   /// The title of the testing page
   ///

dev/integration_tests/android_views/lib/wm_integrations.dart

@@ -18,7 +18,7 @@ class WindowManagerIntegrationsPage extends PageWidget {
 }
 
 class WindowManagerBody extends StatefulWidget {
-  const WindowManagerBody({Key? key}) : super(key: key);
+  const WindowManagerBody({super.key});
 
   @override
   State<WindowManagerBody> createState() => WindowManagerBodyState();

dev/integration_tests/android_views/pubspec.yaml

@@ -4,7 +4,7 @@ publish_to: none
 description: An integration test for embedded platform views
 version: 1.0.0+1
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.17.0-0 <3.0.0'
 
 dependencies:
   flutter:

dev/integration_tests/channels/lib/main.dart

@@ -19,7 +19,7 @@ void main() {
 }
 
 class TestApp extends StatefulWidget {
-  const TestApp({Key? key}) : super(key: key);
+  const TestApp({super.key});
 
   @override
   State<TestApp> createState() => _TestAppState();

dev/integration_tests/deferred_components_test/lib/component1.dart

@@ -8,7 +8,7 @@ import 'package:flutter/material.dart';
 
 
 class LogoScreen extends StatelessWidget {
-  const LogoScreen({Key? key}) : super(key: key);
+  const LogoScreen({super.key});
 
   static const String _testSentinel = 'Running deferred code';
 

dev/integration_tests/deferred_components_test/lib/main.dart

@@ -15,7 +15,7 @@ void main() {
 }
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -31,7 +31,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key}) : super(key: key);
+  const MyHomePage({super.key});
 
   @override
   MyHomePageState createState() => MyHomePageState();

dev/integration_tests/deferred_components_test/pubspec.yaml

@@ -3,7 +3,7 @@ description: Integration test application for basic deferred components function
 publish_to: 'none'
 version: 1.0.0+1
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.17.0-0 <3.0.0'
 
 dependencies:
   flutter:

dev/integration_tests/external_ui/lib/main.dart

@@ -15,7 +15,7 @@ void main() {
 }
 
 class MyApp extends StatefulWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   State createState() => MyAppState();

dev/integration_tests/flavors/lib/main.dart

@@ -16,7 +16,7 @@ void runMainApp() {
 }
 
 class Flavor extends StatefulWidget {
-  const Flavor({Key? key}) : super(key: key);
+  const Flavor({super.key});
 
   @override
   State<Flavor> createState() => _FlavorState();

dev/integration_tests/hybrid_android_views/lib/android_platform_view.dart

@@ -15,12 +15,11 @@ class AndroidPlatformView extends StatelessWidget {
   /// native view.
   /// `viewType` identifies the type of Android view to create.
   const AndroidPlatformView({
-    Key? key,
+    super.key,
     this.onPlatformViewCreated,
     this.useHybridComposition = false,
     required this.viewType,
-  })  : assert(viewType != null),
-        super(key: key);
+  })  : assert(viewType != null);
 
   /// The unique identifier for the view type to be embedded by this widget.
   ///

dev/integration_tests/hybrid_android_views/lib/main.dart

@@ -21,7 +21,7 @@ void main() {
 }
 
 class Home extends StatelessWidget {
-  const Home({Key? key}) : super(key: key);
+  const Home({super.key});
 
   @override
   Widget build(BuildContext context) {

dev/integration_tests/hybrid_android_views/lib/motion_events_page.dart

@@ -27,7 +27,7 @@ class MotionEventsPage extends PageWidget {
 }
 
 class MotionEventsBody extends StatefulWidget {
-  const MotionEventsBody({Key? key}) : super(key: key);
+  const MotionEventsBody({super.key});
 
   @override
   State createState() => MotionEventsBodyState();
@@ -231,7 +231,7 @@ class MotionEventsBodyState extends State<MotionEventsBody> {
 }
 
 class TouchEventDiff extends StatelessWidget {
-  const TouchEventDiff(this.originalEvent, this.synthesizedEvent, {Key? key}) : super(key: key);
+  const TouchEventDiff(this.originalEvent, this.synthesizedEvent, {super.key});
 
   final Map<String, dynamic> originalEvent;
   final Map<String, dynamic> synthesizedEvent;

dev/integration_tests/hybrid_android_views/lib/nested_view_event_page.dart

@@ -20,7 +20,7 @@ class NestedViewEventPage extends PageWidget {
 }
 
 class NestedViewEventBody extends StatefulWidget {
-  const NestedViewEventBody({Key? key}) : super(key: key);
+  const NestedViewEventBody({super.key});
 
   @override
   State<NestedViewEventBody> createState() => NestedViewEventBodyState();

dev/integration_tests/hybrid_android_views/lib/page.dart

@@ -8,7 +8,7 @@ import 'package:flutter/material.dart';
 //
 /// A testing page has to override this in order to be put as one of the items in the main page.
 abstract class PageWidget extends StatelessWidget {
-  const PageWidget(this.title, this.tileKey, {Key? key}) : super(key: key);
+  const PageWidget(this.title, this.tileKey, {super.key});
 
   /// The title of the testing page
   ///

dev/integration_tests/hybrid_android_views/pubspec.yaml

@@ -4,7 +4,7 @@ publish_to: none
 description: An integration test for hybrid composition on Android
 version: 1.0.0+1
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.17.0-0 <3.0.0'
 
 dependencies:
   flutter:

dev/integration_tests/ios_add2app_life_cycle/flutterapp/lib/main.dart

@@ -27,7 +27,7 @@ void main() {
 ///
 /// Rewiring semantics is a signal to native IOS test that the test has passed.
 class LifeCycleSpy extends StatefulWidget {
-  const LifeCycleSpy({Key? key}) : super(key: key);
+  const LifeCycleSpy({super.key});
 
   @override
   State<LifeCycleSpy> createState() => _LifeCycleSpyState();

dev/integration_tests/ios_app_with_extensions/lib/main.dart

@@ -7,7 +7,7 @@ import 'package:flutter/material.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   // This widget is the root of your application.
   @override
@@ -32,7 +32,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key, this.title}) : super(key: key);
+  const MyHomePage({super.key, this.title});
 
   // This widget is the home page of your application. It is stateful, meaning
   // that it has a State object (defined below) that contains fields that affect

dev/integration_tests/ios_platform_view_tests/lib/main.dart

@@ -12,7 +12,7 @@ void main() {
 
 /// The main app entrance of the test
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -30,7 +30,7 @@ class MyApp extends StatelessWidget {
 ///
 /// On press the button, a page with platform view should be pushed into the scene.
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key, this.title}) : super(key: key);
+  const MyHomePage({super.key, this.title});
   final String? title;
 
   @override
@@ -69,7 +69,7 @@ class _MyHomePageState extends State<MyHomePage> {
 
 /// A page contains the platform view to be tested.
 class PlatformViewPage extends StatelessWidget {
-  const PlatformViewPage({Key? key}) : super(key: key);
+  const PlatformViewPage({super.key});
 
   static Key button = const ValueKey<String>('plus_button');
 

dev/integration_tests/platform_interaction/lib/main.dart

@@ -16,7 +16,7 @@ void main() {
 }
 
 class TestApp extends StatefulWidget {
-  const TestApp({Key? key}) : super(key: key);
+  const TestApp({super.key});
 
   @override
   State<TestApp> createState() => _TestAppState();

dev/integration_tests/ui/lib/commands.dart

@@ -11,7 +11,7 @@ void main() {
 }
 
 class Test extends SingleChildRenderObjectWidget {
-  const Test({ Key? key }) : super(key: key);
+  const Test({ super.key });
 
   @override
   RenderTest createRenderObject(BuildContext context) => RenderTest();

dev/integration_tests/ui/lib/driver.dart

@@ -11,7 +11,7 @@ void main() {
 }
 
 class DriverTestApp extends StatefulWidget {
-  const DriverTestApp({Key? key}) : super(key: key);
+  const DriverTestApp({super.key});
 
   @override
   State<StatefulWidget> createState() {

dev/integration_tests/ui/lib/empty.dart

@@ -12,7 +12,7 @@ void main() {
 }
 
 class Empty extends StatelessWidget {
-  const Empty({Key? key}) : super(key: key);
+  const Empty({super.key});
 
   @override
   Widget build(BuildContext context) => Container();

dev/integration_tests/ui/lib/frame_number.dart

@@ -26,9 +26,8 @@ void main() {
 
 class _FirstFrameTimings extends StatefulWidget {
   const _FirstFrameTimings({
-    Key? key,
     required this.completer,
-  }) : super(key: key);
+  });
 
   final Completer<List<FrameTiming>> completer;
 

dev/integration_tests/ui/lib/keyboard_resize.dart

@@ -16,7 +16,7 @@ void main() {
 }
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -29,7 +29,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key}) : super(key: key);
+  const MyHomePage({super.key});
 
   @override
   State<MyHomePage> createState() => _MyHomePageState();

dev/integration_tests/ui/lib/keyboard_textfield.dart

@@ -14,7 +14,7 @@ void main() {
 }
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -27,7 +27,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key}) : super(key: key);
+  const MyHomePage({super.key});
 
   @override
   State<MyHomePage> createState() => _MyHomePageState();

dev/integration_tests/ui/lib/license_check.dart

@@ -14,7 +14,7 @@ void main() {
 }
 
 class ShowLicenses extends StatelessWidget {
-  const ShowLicenses({Key? key}) : super(key: key);
+  const ShowLicenses({super.key});
 
   Widget _buildTestResultWidget(
     BuildContext context,

dev/integration_tests/ui/lib/overflow.dart

@@ -9,7 +9,7 @@ void main() {
 }
 
 class Test extends StatefulWidget {
-  const Test({ Key? key }) : super(key: key);
+  const Test({ super.key });
 
   @override
   State<Test> createState() => _TestState();

dev/integration_tests/ui/lib/screenshot.dart

@@ -16,7 +16,7 @@ void main() {
 }
 
 class Toggler extends StatefulWidget {
-  const Toggler({Key? key}) : super(key: key);
+  const Toggler({super.key});
 
   @override
   State<Toggler> createState() => TogglerState();

dev/integration_tests/web/lib/framework_stack_trace.dart

@@ -62,7 +62,7 @@ bool _errorMessageFormattedCorrectly(String errorMessage) {
 }
 
 class ThrowingWidget extends StatefulWidget {
-  const ThrowingWidget({Key? key}) : super(key: key);
+  const ThrowingWidget({super.key});
 
   @override
   State<ThrowingWidget> createState() => _ThrowingWidgetState();

dev/integration_tests/web_compile_tests/pubspec.yaml

@@ -1,6 +1,6 @@
 name: web_compile_tests
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.17.0-0 <3.0.0'
 
 dependencies:
   flutter:

dev/integration_tests/web_e2e_tests/lib/image_loading_main.dart

@@ -27,7 +27,7 @@ Future<void> main() async {
 }
 
 class MyApp extends StatefulWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   MyAppState createState() => MyAppState();

dev/integration_tests/web_e2e_tests/lib/platform_messages_main.dart

@@ -7,7 +7,7 @@ import 'package:flutter/material.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -20,7 +20,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key, required this.title}) : super(key: key);
+  const MyHomePage({super.key, required this.title});
 
   final String title;
 

dev/integration_tests/web_e2e_tests/lib/profile_diagnostics_main.dart

@@ -9,7 +9,7 @@ void main() {
 }
 
 class MyApp extends StatefulWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   MyAppState createState() => MyAppState();

dev/integration_tests/web_e2e_tests/lib/scroll_wheel_main.dart

@@ -9,7 +9,7 @@ import 'package:flutter/material.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   // This widget is the root of your application.
   @override
@@ -27,7 +27,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key, required this.title}) : super(key: key);
+  const MyHomePage({super.key, required this.title});
 
   final String title;
 

dev/integration_tests/web_e2e_tests/lib/target_platform_main.dart

@@ -8,7 +8,7 @@ import 'package:flutter/material.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -21,7 +21,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatelessWidget {
-  const MyHomePage({Key? key}) : super(key: key);
+  const MyHomePage({super.key});
 
   @override
   Widget build(BuildContext context) {

dev/integration_tests/web_e2e_tests/lib/text_editing_main.dart

@@ -7,7 +7,7 @@ import 'package:flutter/material.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -20,7 +20,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key, this.title}) : super(key: key);
+  const MyHomePage({super.key, this.title});
 
   final String? title;
 

dev/integration_tests/web_e2e_tests/lib/treeshaking_main.dart

@@ -7,7 +7,7 @@ import 'package:flutter/material.dart';
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -20,7 +20,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key, required this.title}) : super(key: key);
+  const MyHomePage({super.key, required this.title});
 
   final String title;
 

dev/integration_tests/web_e2e_tests/lib/url_strategy_main.dart

@@ -16,7 +16,7 @@ void main() {
 }
 
 class MyApp extends StatelessWidget {
-  const MyApp(this.routes, {Key? key}) : super(key: key);
+  const MyApp(this.routes, {super.key});
 
   final Map<String, WidgetBuilder> routes;
 

dev/manual_tests/lib/actions.dart

@@ -310,7 +310,7 @@ class UndoableDirectionalFocusAction extends UndoableFocusActionBase<Directional
 
 /// A button class that takes focus when clicked.
 class DemoButton extends StatefulWidget {
-  const DemoButton({Key? key, required this.name}) : super(key: key);
+  const DemoButton({super.key, required this.name});
 
   final String name;
 
@@ -356,7 +356,7 @@ class _DemoButtonState extends State<DemoButton> {
 }
 
 class FocusDemo extends StatefulWidget {
-  const FocusDemo({Key? key}) : super(key: key);
+  const FocusDemo({super.key});
 
   static GlobalKey appKey = GlobalKey();
 

dev/manual_tests/lib/animated_icons.dart

@@ -5,7 +5,7 @@
 import 'package:flutter/material.dart';
 
 class AnimatedIconsTestApp extends StatelessWidget {
-  const AnimatedIconsTestApp({Key? key}) : super(key: key);
+  const AnimatedIconsTestApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -19,7 +19,7 @@ class AnimatedIconsTestApp extends StatelessWidget {
 }
 
 class IconsList extends StatelessWidget {
-  const IconsList({Key? key}) : super(key: key);
+  const IconsList({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -30,7 +30,7 @@ class IconsList extends StatelessWidget {
 }
 
 class IconSampleRow extends StatefulWidget {
-  const IconSampleRow(this.sample, {Key? key}) : super(key: key);
+  const IconSampleRow(this.sample, {super.key});
 
   final IconSample sample;
 

dev/manual_tests/lib/card_collection.dart

@@ -18,7 +18,7 @@ class CardModel {
 }
 
 class CardCollection extends StatefulWidget {
-  const CardCollection({Key? key}) : super(key: key);
+  const CardCollection({super.key});
 
   @override
   CardCollectionState createState() => CardCollectionState();

dev/manual_tests/lib/color_testing_demo.dart

@@ -5,7 +5,7 @@
 import 'package:flutter/material.dart';
 
 class ColorTestingDemo extends StatelessWidget {
-  const ColorTestingDemo({ Key? key }) : super(key: key);
+  const ColorTestingDemo({ super.key });
 
   static const String routeName = '/color_demo';
 
@@ -14,7 +14,7 @@ class ColorTestingDemo extends StatelessWidget {
 }
 
 class ColorDemoHome extends StatelessWidget {
-  const ColorDemoHome({Key? key}) : super(key: key);
+  const ColorDemoHome({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -52,7 +52,7 @@ class ColorDemoHome extends StatelessWidget {
 }
 
 class GradientRow extends StatelessWidget {
-  const GradientRow({ Key? key, required this.rightColor, required this.leftColor }) : super(key: key);
+  const GradientRow({ super.key, required this.rightColor, required this.leftColor });
 
   final Color leftColor;
   final Color rightColor;
@@ -73,7 +73,7 @@ class GradientRow extends StatelessWidget {
 }
 
 class ColorRow extends StatelessWidget {
-  const ColorRow({ Key? key, required this.color }) : super(key: key);
+  const ColorRow({ super.key, required this.color });
 
   final Color color;
 

dev/manual_tests/lib/density.dart

@@ -22,7 +22,7 @@ final MaterialColor m2Swatch = MaterialColor(m2SwatchColors[500]!.value, m2Swatc
 void main() => runApp(const MyApp());
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   static const String _title = 'Density Test';
 
@@ -36,7 +36,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key, required this.title}) : super(key: key);
+  const MyHomePage({super.key, required this.title});
 
   final String title;
 
@@ -112,7 +112,7 @@ class OptionModel extends ChangeNotifier {
 }
 
 class LabeledCheckbox extends StatelessWidget {
-  const LabeledCheckbox({Key? key, required this.label, this.onChanged, this.value}) : super(key: key);
+  const LabeledCheckbox({super.key, required this.label, this.onChanged, this.value});
 
   final String label;
   final ValueChanged<bool?>? onChanged;
@@ -134,7 +134,7 @@ class LabeledCheckbox extends StatelessWidget {
 }
 
 class Options extends StatefulWidget {
-  const Options(this.model, {Key? key}) : super(key: key);
+  const Options(this.model, {super.key});
 
   final OptionModel model;
 
@@ -365,10 +365,9 @@ class _OptionsState extends State<Options> {
 }
 
 class _ControlTile extends StatelessWidget {
-  const _ControlTile({Key? key, required this.label, required this.child})
+  const _ControlTile({required this.label, required this.child})
       : assert(label != null),
-        assert(child != null),
-        super(key: key);
+        assert(child != null);
 
   final String label;
   final Widget child;

dev/manual_tests/lib/drag_and_drop.dart

@@ -7,7 +7,7 @@ import 'dart:math' as math;
 import 'package:flutter/material.dart';
 
 class ExampleDragTarget extends StatefulWidget {
-  const ExampleDragTarget({Key? key}) : super(key: key);
+  const ExampleDragTarget({super.key});
 
   @override
   ExampleDragTargetState createState() => ExampleDragTargetState();
@@ -44,7 +44,7 @@ class ExampleDragTargetState extends State<ExampleDragTarget> {
 }
 
 class Dot extends StatefulWidget {
-  const Dot({ Key? key, this.color, this.size, this.child, this.tappable = false }) : super(key: key);
+  const Dot({ super.key, this.color, this.size, this.child, this.tappable = false });
 
   final Color? color;
   final double? size;
@@ -77,12 +77,12 @@ class DotState extends State<Dot> {
 
 class ExampleDragSource extends StatelessWidget {
   const ExampleDragSource({
-    Key? key,
+    super.key,
     this.color,
     this.heavy = false,
     this.under = true,
     this.child,
-  }) : super(key: key);
+  });
 
   final Color? color;
   final bool heavy;
@@ -176,7 +176,7 @@ class DashOutlineCirclePainter extends CustomPainter {
 }
 
 class MovableBall extends StatelessWidget {
-  const MovableBall(this.position, this.ballPosition, this.callback, {Key? key}) : super(key: key);
+  const MovableBall(this.position, this.ballPosition, this.callback, {super.key});
 
   final int position;
   final int ballPosition;
@@ -225,7 +225,7 @@ class MovableBall extends StatelessWidget {
 }
 
 class DragAndDropApp extends StatefulWidget {
-  const DragAndDropApp({Key? key}) : super(key: key);
+  const DragAndDropApp({super.key});
 
   @override
   DragAndDropAppState createState() => DragAndDropAppState();

dev/manual_tests/lib/focus.dart

@@ -13,7 +13,7 @@ void main() {
 }
 
 class DemoButton extends StatefulWidget {
-  const DemoButton({Key? key, required this.name, this.canRequestFocus = true, this.autofocus = false}) : super(key: key);
+  const DemoButton({super.key, required this.name, this.canRequestFocus = true, this.autofocus = false});
 
   final String name;
   final bool canRequestFocus;
@@ -68,7 +68,7 @@ class _DemoButtonState extends State<DemoButton> {
 }
 
 class FocusDemo extends StatefulWidget {
-  const FocusDemo({Key? key}) : super(key: key);
+  const FocusDemo({super.key});
 
   @override
   State<FocusDemo> createState() => _FocusDemoState();

dev/manual_tests/lib/hover.dart

@@ -12,7 +12,7 @@ void main() {
 }
 
 class DemoButton extends StatelessWidget {
-  const DemoButton({Key? key, required this.name}) : super(key: key);
+  const DemoButton({super.key, required this.name});
 
   final String name;
 
@@ -30,7 +30,7 @@ class DemoButton extends StatelessWidget {
 }
 
 class HoverDemo extends StatefulWidget {
-  const HoverDemo({Key? key}) : super(key: key);
+  const HoverDemo({super.key});
 
   @override
   State<HoverDemo> createState() => _HoverDemoState();

dev/manual_tests/lib/material_arc.dart

@@ -101,7 +101,7 @@ class _PointDemoPainter extends CustomPainter {
 }
 
 class _PointDemo extends StatefulWidget {
-  const _PointDemo({ Key? key, required this.controller }) : super(key: key);
+  const _PointDemo({ super.key, required this.controller });
 
   final AnimationController controller;
 
@@ -268,7 +268,7 @@ class _RectangleDemoPainter extends CustomPainter {
 }
 
 class _RectangleDemo extends StatefulWidget {
-  const _RectangleDemo({ Key? key, required this.controller }) : super(key: key);
+  const _RectangleDemo({ super.key, required this.controller });
 
   final AnimationController controller;
 
@@ -400,7 +400,7 @@ class _ArcDemo {
 }
 
 class AnimationDemo extends StatefulWidget {
-  const AnimationDemo({ Key? key }) : super(key: key);
+  const AnimationDemo({ super.key });
 
   @override
   State<AnimationDemo> createState() => _AnimationDemoState();

dev/manual_tests/lib/overlay_geometry.dart

@@ -56,11 +56,11 @@ class _MarkerPainter extends CustomPainter {
 
 class Marker extends StatelessWidget {
   const Marker({
-    Key? key,
+    super.key,
     this.type = MarkerType.touch,
     this.position,
     this.size = 40.0,
-  }) : super(key: key);
+  });
 
   final Offset? position;
   final double size;
@@ -86,7 +86,7 @@ class Marker extends StatelessWidget {
 }
 
 class OverlayGeometryApp extends StatefulWidget {
-  const OverlayGeometryApp({Key? key}) : super(key: key);
+  const OverlayGeometryApp({super.key});
 
   @override
   OverlayGeometryAppState createState() => OverlayGeometryAppState();