1. fix: android edge to edge

2. clean: dart analysis

@@ -2,7 +2,6 @@ import 'dart:math';
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:flutter/widgets.dart';
 import 'package:modal_bottom_sheet/modal_bottom_sheet.dart';
 
 class AvatarBottomSheet extends StatelessWidget {
@@ -83,12 +82,6 @@ Future<T?> showAvatarModalBottomSheet<T>({
   bool enableDrag = true,
   Duration? duration,
 }) async {
-  assert(context != null);
-  assert(builder != null);
-  assert(expand != null);
-  assert(useRootNavigator != null);
-  assert(isDismissible != null);
-  assert(enableDrag != null);
   assert(debugCheckHasMediaQuery(context));
   assert(debugCheckHasMaterialLocalizations(context));
   final result = await Navigator.of(context, rootNavigator: useRootNavigator)

 import 'package:flutter/material.dart';
-import 'package:flutter/widgets.dart';
 import 'package:modal_bottom_sheet/modal_bottom_sheet.dart';
 
 class FloatingModal extends StatelessWidget {

-import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 
 class ModalFit extends StatelessWidget {

-import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:modal_bottom_sheet/modal_bottom_sheet.dart';
 

 import 'package:flutter/cupertino.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter/rendering.dart';
 import 'package:url_launcher/url_launcher.dart';
 
 class WebFrame extends StatelessWidget {

@@ -3,12 +3,8 @@
 // found in the LICENSE file.
 
 import 'dart:async';
-import 'package:flutter/cupertino.dart';
-import 'package:flutter/foundation.dart';
 import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter/scheduler.dart';
-import 'package:flutter/widgets.dart';
 import 'package:modal_bottom_sheet/src/utils/scroll_to_top_status_bar.dart';
 
 import 'package:modal_bottom_sheet/src/utils/bottom_sheet_suspended_curve.dart';
@@ -49,10 +45,7 @@ class ModalBottomSheet extends StatefulWidget {
     required this.expanded,
     required this.onClosing,
     required this.child,
-  })   : assert(enableDrag != null),
-        assert(onClosing != null),
-        assert(child != null),
-        super(key: key);
+  })   : super(key: key);
 
   /// The closeProgressThreshold parameter
   /// specifies when the bottom sheet will be dismissed when user drags it.

 import 'dart:async';
 
-import 'package:flutter/cupertino.dart';
-import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
-import 'package:modal_bottom_sheet/src/utils/modal_scroll_controller.dart';
 
 import '../modal_bottom_sheet.dart';
 
@@ -19,9 +16,7 @@ class _ModalBottomSheet<T> extends StatefulWidget {
     this.expanded = false,
     this.enableDrag = true,
     this.animationCurve,
-  })  : assert(expanded != null),
-        assert(enableDrag != null),
-        super(key: key);
+  })  : super(key: key);
 
   final double? closeProgressThreshold;
   final ModalBottomSheetRoute<T> route;
@@ -143,10 +138,7 @@ class ModalBottomSheetRoute<T> extends PopupRoute<T> {
     this.animationCurve,
     this.duration,
     RouteSettings? settings,
-  })  : assert(expanded != null),
-        assert(isDismissible != null),
-        assert(enableDrag != null),
-        super(settings: settings);
+  })  : super(settings: settings);
 
   final double? closeProgressThreshold;
   final WidgetWithChildBuilder? containerBuilder;
@@ -246,13 +238,6 @@ Future<T?> showCustomModalBottomSheet<T>({
   bool enableDrag = true,
   Duration? duration,
 }) async {
-  assert(context != null);
-  assert(builder != null);
-  assert(containerWidget != null);
-  assert(expand != null);
-  assert(useRootNavigator != null);
-  assert(isDismissible != null);
-  assert(enableDrag != null);
   assert(debugCheckHasMediaQuery(context));
   assert(debugCheckHasMaterialLocalizations(context));
   final hasMaterialLocalizations =

@@ -89,12 +89,6 @@ Future<T?> showBarModalBottomSheet<T>({
   Widget? topControl,
   Duration? duration,
 }) async {
-  assert(context != null);
-  assert(builder != null);
-  assert(expand != null);
-  assert(useRootNavigator != null);
-  assert(isDismissible != null);
-  assert(enableDrag != null);
   assert(debugCheckHasMediaQuery(context));
   assert(debugCheckHasMaterialLocalizations(context));
   final result = await Navigator.of(context, rootNavigator: useRootNavigator)

@@ -5,8 +5,6 @@
 import 'dart:async';
 
 import 'package:flutter/cupertino.dart' show CupertinoTheme, CupertinoApp;
-import 'package:flutter/foundation.dart';
-import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart'
     show
         Colors,
@@ -17,7 +15,6 @@ import 'package:flutter/services.dart';
 import 'package:flutter/widgets.dart';
 
 import '../../modal_bottom_sheet.dart';
-import '../bottom_sheet_route.dart';
 
 const double _kPreviousPageVisibleOffset = 10;
 
@@ -95,11 +92,6 @@ Future<T?> showCupertinoModalBottomSheet<T>({
   Color? transitionBackgroundColor,
   BoxShadow? shadow,
 }) async {
-  assert(context != null);
-  assert(builder != null);
-  assert(expand != null);
-  assert(useRootNavigator != null);
-  assert(enableDrag != null);
   assert(debugCheckHasMediaQuery(context));
   final hasMaterialLocalizations =
       Localizations.of<MaterialLocalizations>(context, MaterialLocalizations) !=
@@ -173,10 +165,7 @@ class CupertinoModalBottomSheetRoute<T> extends ModalBottomSheetRoute<T> {
     this.transitionBackgroundColor,
     this.topRadius = _kDefaultTopRadius,
     this.previousRouteAnimationCurve,
-  })  : assert(expanded != null),
-        assert(isDismissible != null),
-        assert(enableDrag != null),
-        super(
+  })  : super(
           closeProgressThreshold: closeProgressThreshold,
           scrollController: scrollController,
           containerBuilder: containerBuilder,
@@ -266,7 +255,10 @@ class _CupertinoModalTransition extends StatelessWidget {
     );
 
     return AnnotatedRegion<SystemUiOverlayStyle>(
-      value: SystemUiOverlayStyle.light,
+      value: SystemUiOverlayStyle(
+        statusBarIconBrightness: Brightness.light,
+        statusBarBrightness: Brightness.dark,
+      ),
       child: AnimatedBuilder(
         animation: curvedAnimation,
         child: body,
@@ -355,11 +347,6 @@ class CupertinoScaffold extends StatefulWidget {
     RouteSettings? settings,
     BoxShadow? shadow,
   }) async {
-    assert(context != null);
-    assert(builder != null);
-    assert(expand != null);
-    assert(useRootNavigator != null);
-    assert(enableDrag != null);
     assert(debugCheckHasMediaQuery(context));
     final isCupertinoApp =
         context.findAncestorWidgetOfExactType<CupertinoApp>() != null;
@@ -400,8 +387,6 @@ class _CupertinoScaffoldState extends State<CupertinoScaffold>
     with TickerProviderStateMixin {
   late AnimationController animationController;
 
-  SystemUiOverlayStyle? lastStyle;
-
   @override
   void initState() {
     animationController =

@@ -21,12 +21,6 @@ Future<T?> showMaterialModalBottomSheet<T>({
   bool enableDrag = true,
   Duration? duration,
 }) async {
-  assert(context != null);
-  assert(builder != null);
-  assert(expand != null);
-  assert(useRootNavigator != null);
-  assert(isDismissible != null);
-  assert(enableDrag != null);
   assert(debugCheckHasMediaQuery(context));
   assert(debugCheckHasMaterialLocalizations(context));
   final result = await Navigator.of(context, rootNavigator: useRootNavigator)

 import 'package:flutter/cupertino.dart';
-import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 
 import '../modal_bottom_sheet.dart';
@@ -15,10 +14,7 @@ class MaterialWithModalsPageRoute<T> extends MaterialPageRoute<T> {
     RouteSettings? settings,
     bool maintainState = true,
     bool fullscreenDialog = false,
-  })  : assert(builder != null),
-        assert(maintainState != null),
-        assert(fullscreenDialog != null),
-        super(
+  })  : super(
             settings: settings,
             fullscreenDialog: fullscreenDialog,
             builder: builder,

@@ -30,8 +30,7 @@ class BottomSheetSuspendedCurve extends Curve {
   const BottomSheetSuspendedCurve(
     this.startingPoint, {
     this.curve = Curves.easeOutCubic,
-  })  : assert(startingPoint != null),
-        assert(curve != null);
+  });
 
   /// The progress value at which [curve] should begin.
   ///

@@ -16,8 +16,7 @@ class ModalScrollController extends InheritedWidget {
     Key? key,
     required this.controller,
     required Widget child,
-  })  : assert(controller != null),
-        super(
+  })  : super(
           key: key,
           child: PrimaryScrollController(
             controller: controller,

@@ -50,7 +50,7 @@ class _ScrollToTopStatusBarState extends State<ScrollToTopStatusBarHandler> {
 
   void _handleStatusBarTap(BuildContext context) {
     final controller = widget.scrollController;
-    if (controller != null && controller.hasClients) {
+    if (controller.hasClients) {
       controller.animateTo(
         0.0,
         duration: const Duration(milliseconds: 300),