diff --git a/analysis_options.yaml b/analysis_options.yaml
index 0e07b33..85f5bde 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -68,7 +68,7 @@
     # - avoid_catching_errors # blocked on https://github.com/dart-lang/linter/issues/3023
     - avoid_classes_with_only_static_members
     - avoid_double_and_int_checks
-    # - avoid_dynamic_calls # LOCAL CHANGE - Needs to be enabled and violations fixed.
+    - avoid_dynamic_calls
     - avoid_empty_else
     - avoid_equals_and_hash_code_on_mutable_classes
     - avoid_escaping_inner_quotes
diff --git a/packages/camera/camera_android/CHANGELOG.md b/packages/camera/camera_android/CHANGELOG.md
index 1b07c30..1a0b87e 100644
--- a/packages/camera/camera_android/CHANGELOG.md
+++ b/packages/camera/camera_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.10.2+1
+
+* Updates code for stricter lint checks.
+
 ## 0.10.2
 
 * Remove usage of deprecated quiver Optional type.
diff --git a/packages/camera/camera_android/lib/src/android_camera.dart b/packages/camera/camera_android/lib/src/android_camera.dart
index 4b342ee..1a9c3d0 100644
--- a/packages/camera/camera_android/lib/src/android_camera.dart
+++ b/packages/camera/camera_android/lib/src/android_camera.dart
@@ -549,9 +549,9 @@
   Future<dynamic> _handleDeviceMethodCall(MethodCall call) async {
     switch (call.method) {
       case 'orientation_changed':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _deviceEventStreamController.add(DeviceOrientationChangedEvent(
-            deserializeDeviceOrientation(
-                call.arguments['orientation']! as String)));
+            deserializeDeviceOrientation(arguments['orientation']! as String)));
         break;
       default:
         throw MissingPluginException();
@@ -566,21 +566,23 @@
   Future<dynamic> handleCameraMethodCall(MethodCall call, int cameraId) async {
     switch (call.method) {
       case 'initialized':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(CameraInitializedEvent(
           cameraId,
-          call.arguments['previewWidth']! as double,
-          call.arguments['previewHeight']! as double,
-          deserializeExposureMode(call.arguments['exposureMode']! as String),
-          call.arguments['exposurePointSupported']! as bool,
-          deserializeFocusMode(call.arguments['focusMode']! as String),
-          call.arguments['focusPointSupported']! as bool,
+          arguments['previewWidth']! as double,
+          arguments['previewHeight']! as double,
+          deserializeExposureMode(arguments['exposureMode']! as String),
+          arguments['exposurePointSupported']! as bool,
+          deserializeFocusMode(arguments['focusMode']! as String),
+          arguments['focusPointSupported']! as bool,
         ));
         break;
       case 'resolution_changed':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(CameraResolutionChangedEvent(
           cameraId,
-          call.arguments['captureWidth']! as double,
-          call.arguments['captureHeight']! as double,
+          arguments['captureWidth']! as double,
+          arguments['captureHeight']! as double,
         ));
         break;
       case 'camera_closing':
@@ -589,23 +591,32 @@
         ));
         break;
       case 'video_recorded':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(VideoRecordedEvent(
           cameraId,
-          XFile(call.arguments['path']! as String),
-          call.arguments['maxVideoDuration'] != null
-              ? Duration(
-                  milliseconds: call.arguments['maxVideoDuration']! as int)
+          XFile(arguments['path']! as String),
+          arguments['maxVideoDuration'] != null
+              ? Duration(milliseconds: arguments['maxVideoDuration']! as int)
               : null,
         ));
         break;
       case 'error':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(CameraErrorEvent(
           cameraId,
-          call.arguments['description']! as String,
+          arguments['description']! as String,
         ));
         break;
       default:
         throw MissingPluginException();
     }
   }
+
+  /// Returns the arguments of [call] as typed string-keyed Map.
+  ///
+  /// This does not do any type validation, so is only safe to call if the
+  /// arguments are known to be a map.
+  Map<String, Object?> _getArgumentDictionary(MethodCall call) {
+    return (call.arguments as Map<Object?, Object?>).cast<String, Object?>();
+  }
 }
diff --git a/packages/camera/camera_android/pubspec.yaml b/packages/camera/camera_android/pubspec.yaml
index 6f25af7..9d86a00 100644
--- a/packages/camera/camera_android/pubspec.yaml
+++ b/packages/camera/camera_android/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Android implementation of the camera plugin.
 repository: https://github.com/flutter/plugins/tree/main/packages/camera/camera_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+camera%22
-version: 0.10.2
+version: 0.10.2+1
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
diff --git a/packages/camera/camera_android/test/android_camera_test.dart b/packages/camera/camera_android/test/android_camera_test.dart
index e35d0fd..bd55b0b 100644
--- a/packages/camera/camera_android/test/android_camera_test.dart
+++ b/packages/camera/camera_android/test/android_camera_test.dart
@@ -504,11 +504,13 @@
       ]);
       expect(cameras.length, returnData.length);
       for (int i = 0; i < returnData.length; i++) {
+        final Map<String, Object?> typedData =
+            (returnData[i] as Map<dynamic, dynamic>).cast<String, Object?>();
         final CameraDescription cameraDescription = CameraDescription(
-          name: returnData[i]['name']! as String,
+          name: typedData['name']! as String,
           lensDirection:
-              parseCameraLensDirection(returnData[i]['lensFacing']! as String),
-          sensorOrientation: returnData[i]['sensorOrientation']! as int,
+              parseCameraLensDirection(typedData['lensFacing']! as String),
+          sensorOrientation: typedData['sensorOrientation']! as int,
         );
         expect(cameras[i], cameraDescription);
       }
diff --git a/packages/camera/camera_android_camerax/lib/src/instance_manager.dart b/packages/camera/camera_android_camerax/lib/src/instance_manager.dart
index dd48610..8c6081c 100644
--- a/packages/camera/camera_android_camerax/lib/src/instance_manager.dart
+++ b/packages/camera/camera_android_camerax/lib/src/instance_manager.dart
@@ -124,22 +124,26 @@
   /// This method also expects the host `InstanceManager` to have a strong
   /// reference to the instance the identifier is associated with.
   T? getInstanceWithWeakReference<T extends Object>(int identifier) {
-    final Object? weakInstance = _weakInstances[identifier]?.target;
+    final T? weakInstance = _weakInstances[identifier]?.target as T?;
 
     if (weakInstance == null) {
-      final Object? strongInstance = _strongInstances[identifier];
+      final T? strongInstance = _strongInstances[identifier] as T?;
       if (strongInstance != null) {
-        final Object copy =
-            _copyCallbacks[identifier]!(strongInstance)! as Object;
+        // This cast is safe since it matches the argument type for
+        // _addInstanceWithIdentifier, which is the only place _copyCallbacks
+        // is populated.
+        final T Function(T) copyCallback =
+            _copyCallbacks[identifier]! as T Function(T);
+        final T copy = copyCallback(strongInstance);
         _identifiers[copy] = identifier;
-        _weakInstances[identifier] = WeakReference<Object>(copy);
+        _weakInstances[identifier] = WeakReference<T>(copy);
         _finalizer.attach(copy, identifier, detach: copy);
-        return copy as T;
+        return copy;
       }
-      return strongInstance as T?;
+      return strongInstance;
     }
 
-    return weakInstance as T;
+    return weakInstance;
   }
 
   /// Retrieves the identifier associated with instance.
diff --git a/packages/camera/camera_avfoundation/CHANGELOG.md b/packages/camera/camera_avfoundation/CHANGELOG.md
index 9217f26..d9fc8c3 100644
--- a/packages/camera/camera_avfoundation/CHANGELOG.md
+++ b/packages/camera/camera_avfoundation/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.9.10+1
+
+* Updates code for stricter lint checks.
+
 ## 0.9.10
 
 * Remove usage of deprecated quiver Optional type.
diff --git a/packages/camera/camera_avfoundation/lib/src/avfoundation_camera.dart b/packages/camera/camera_avfoundation/lib/src/avfoundation_camera.dart
index 011616d..11bda51 100644
--- a/packages/camera/camera_avfoundation/lib/src/avfoundation_camera.dart
+++ b/packages/camera/camera_avfoundation/lib/src/avfoundation_camera.dart
@@ -555,9 +555,9 @@
   Future<dynamic> _handleDeviceMethodCall(MethodCall call) async {
     switch (call.method) {
       case 'orientation_changed':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _deviceEventStreamController.add(DeviceOrientationChangedEvent(
-            deserializeDeviceOrientation(
-                call.arguments['orientation']! as String)));
+            deserializeDeviceOrientation(arguments['orientation']! as String)));
         break;
       default:
         throw MissingPluginException();
@@ -572,21 +572,23 @@
   Future<dynamic> handleCameraMethodCall(MethodCall call, int cameraId) async {
     switch (call.method) {
       case 'initialized':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(CameraInitializedEvent(
           cameraId,
-          call.arguments['previewWidth']! as double,
-          call.arguments['previewHeight']! as double,
-          deserializeExposureMode(call.arguments['exposureMode']! as String),
-          call.arguments['exposurePointSupported']! as bool,
-          deserializeFocusMode(call.arguments['focusMode']! as String),
-          call.arguments['focusPointSupported']! as bool,
+          arguments['previewWidth']! as double,
+          arguments['previewHeight']! as double,
+          deserializeExposureMode(arguments['exposureMode']! as String),
+          arguments['exposurePointSupported']! as bool,
+          deserializeFocusMode(arguments['focusMode']! as String),
+          arguments['focusPointSupported']! as bool,
         ));
         break;
       case 'resolution_changed':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(CameraResolutionChangedEvent(
           cameraId,
-          call.arguments['captureWidth']! as double,
-          call.arguments['captureHeight']! as double,
+          arguments['captureWidth']! as double,
+          arguments['captureHeight']! as double,
         ));
         break;
       case 'camera_closing':
@@ -595,23 +597,32 @@
         ));
         break;
       case 'video_recorded':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(VideoRecordedEvent(
           cameraId,
-          XFile(call.arguments['path']! as String),
-          call.arguments['maxVideoDuration'] != null
-              ? Duration(
-                  milliseconds: call.arguments['maxVideoDuration']! as int)
+          XFile(arguments['path']! as String),
+          arguments['maxVideoDuration'] != null
+              ? Duration(milliseconds: arguments['maxVideoDuration']! as int)
               : null,
         ));
         break;
       case 'error':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(CameraErrorEvent(
           cameraId,
-          call.arguments['description']! as String,
+          arguments['description']! as String,
         ));
         break;
       default:
         throw MissingPluginException();
     }
   }
+
+  /// Returns the arguments of [call] as typed string-keyed Map.
+  ///
+  /// This does not do any type validation, so is only safe to call if the
+  /// arguments are known to be a map.
+  Map<String, Object?> _getArgumentDictionary(MethodCall call) {
+    return (call.arguments as Map<Object?, Object?>).cast<String, Object?>();
+  }
 }
diff --git a/packages/camera/camera_avfoundation/pubspec.yaml b/packages/camera/camera_avfoundation/pubspec.yaml
index aa1c110..975accf 100644
--- a/packages/camera/camera_avfoundation/pubspec.yaml
+++ b/packages/camera/camera_avfoundation/pubspec.yaml
@@ -2,7 +2,7 @@
 description: iOS implementation of the camera plugin.
 repository: https://github.com/flutter/plugins/tree/main/packages/camera/camera_avfoundation
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+camera%22
-version: 0.9.10
+version: 0.9.10+1
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
diff --git a/packages/camera/camera_avfoundation/test/avfoundation_camera_test.dart b/packages/camera/camera_avfoundation/test/avfoundation_camera_test.dart
index 8c5fad1..50d3e98 100644
--- a/packages/camera/camera_avfoundation/test/avfoundation_camera_test.dart
+++ b/packages/camera/camera_avfoundation/test/avfoundation_camera_test.dart
@@ -478,6 +478,9 @@
     test('Should fetch CameraDescription instances for available cameras',
         () async {
       // Arrange
+      // This deliberately uses 'dynamic' since that's what actual platform
+      // channel results will be, so using typed mock data could mask type
+      // handling bugs in the code under test.
       final List<dynamic> returnData = <dynamic>[
         <String, dynamic>{
           'name': 'Test 1',
@@ -504,11 +507,13 @@
       ]);
       expect(cameras.length, returnData.length);
       for (int i = 0; i < returnData.length; i++) {
+        final Map<String, Object?> typedData =
+            (returnData[i] as Map<dynamic, dynamic>).cast<String, Object?>();
         final CameraDescription cameraDescription = CameraDescription(
-          name: returnData[i]['name']! as String,
+          name: typedData['name']! as String,
           lensDirection:
-              parseCameraLensDirection(returnData[i]['lensFacing']! as String),
-          sensorOrientation: returnData[i]['sensorOrientation']! as int,
+              parseCameraLensDirection(typedData['lensFacing']! as String),
+          sensorOrientation: typedData['sensorOrientation']! as int,
         );
         expect(cameras[i], cameraDescription);
       }
diff --git a/packages/camera/camera_platform_interface/CHANGELOG.md b/packages/camera/camera_platform_interface/CHANGELOG.md
index 5cde03c..55d93a3 100644
--- a/packages/camera/camera_platform_interface/CHANGELOG.md
+++ b/packages/camera/camera_platform_interface/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.3.3
+
+* Updates code for stricter lint checks.
+
 ## 2.3.2
 
 * Updates MethodChannelCamera to have startVideoRecording call the newer startVideoCapturing.
diff --git a/packages/camera/camera_platform_interface/lib/src/method_channel/method_channel_camera.dart b/packages/camera/camera_platform_interface/lib/src/method_channel/method_channel_camera.dart
index 34c3fa2..06c1ac6 100644
--- a/packages/camera/camera_platform_interface/lib/src/method_channel/method_channel_camera.dart
+++ b/packages/camera/camera_platform_interface/lib/src/method_channel/method_channel_camera.dart
@@ -551,9 +551,9 @@
   Future<dynamic> handleDeviceMethodCall(MethodCall call) async {
     switch (call.method) {
       case 'orientation_changed':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         deviceEventStreamController.add(DeviceOrientationChangedEvent(
-            deserializeDeviceOrientation(
-                call.arguments['orientation']! as String)));
+            deserializeDeviceOrientation(arguments['orientation']! as String)));
         break;
       default:
         throw MissingPluginException();
@@ -568,21 +568,23 @@
   Future<dynamic> handleCameraMethodCall(MethodCall call, int cameraId) async {
     switch (call.method) {
       case 'initialized':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(CameraInitializedEvent(
           cameraId,
-          call.arguments['previewWidth']! as double,
-          call.arguments['previewHeight']! as double,
-          deserializeExposureMode(call.arguments['exposureMode']! as String),
-          call.arguments['exposurePointSupported']! as bool,
-          deserializeFocusMode(call.arguments['focusMode']! as String),
-          call.arguments['focusPointSupported']! as bool,
+          arguments['previewWidth']! as double,
+          arguments['previewHeight']! as double,
+          deserializeExposureMode(arguments['exposureMode']! as String),
+          arguments['exposurePointSupported']! as bool,
+          deserializeFocusMode(arguments['focusMode']! as String),
+          arguments['focusPointSupported']! as bool,
         ));
         break;
       case 'resolution_changed':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(CameraResolutionChangedEvent(
           cameraId,
-          call.arguments['captureWidth']! as double,
-          call.arguments['captureHeight']! as double,
+          arguments['captureWidth']! as double,
+          arguments['captureHeight']! as double,
         ));
         break;
       case 'camera_closing':
@@ -591,23 +593,32 @@
         ));
         break;
       case 'video_recorded':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(VideoRecordedEvent(
           cameraId,
-          XFile(call.arguments['path']! as String),
-          call.arguments['maxVideoDuration'] != null
-              ? Duration(
-                  milliseconds: call.arguments['maxVideoDuration']! as int)
+          XFile(arguments['path']! as String),
+          arguments['maxVideoDuration'] != null
+              ? Duration(milliseconds: arguments['maxVideoDuration']! as int)
               : null,
         ));
         break;
       case 'error':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         cameraEventStreamController.add(CameraErrorEvent(
           cameraId,
-          call.arguments['description']! as String,
+          arguments['description']! as String,
         ));
         break;
       default:
         throw MissingPluginException();
     }
   }
+
+  /// Returns the arguments of [call] as typed string-keyed Map.
+  ///
+  /// This does not do any type validation, so is only safe to call if the
+  /// arguments are known to be a map.
+  Map<String, Object?> _getArgumentDictionary(MethodCall call) {
+    return (call.arguments as Map<Object?, Object?>).cast<String, Object?>();
+  }
 }
diff --git a/packages/camera/camera_platform_interface/pubspec.yaml b/packages/camera/camera_platform_interface/pubspec.yaml
index cb21a6c..54383cd 100644
--- a/packages/camera/camera_platform_interface/pubspec.yaml
+++ b/packages/camera/camera_platform_interface/pubspec.yaml
@@ -4,7 +4,7 @@
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+camera%22
 # NOTE: We strongly prefer non-breaking changes, even at the expense of a
 # less-clean API. See https://flutter.dev/go/platform-interface-breaking-changes
-version: 2.3.2
+version: 2.3.3
 
 environment:
   sdk: '>=2.12.0 <3.0.0'
diff --git a/packages/camera/camera_platform_interface/test/method_channel/method_channel_camera_test.dart b/packages/camera/camera_platform_interface/test/method_channel/method_channel_camera_test.dart
index a58f7b4..ed61515 100644
--- a/packages/camera/camera_platform_interface/test/method_channel/method_channel_camera_test.dart
+++ b/packages/camera/camera_platform_interface/test/method_channel/method_channel_camera_test.dart
@@ -484,11 +484,13 @@
         ]);
         expect(cameras.length, returnData.length);
         for (int i = 0; i < returnData.length; i++) {
+          final Map<String, Object?> typedData =
+              (returnData[i] as Map<dynamic, dynamic>).cast<String, Object?>();
           final CameraDescription cameraDescription = CameraDescription(
-            name: returnData[i]['name']! as String,
-            lensDirection: parseCameraLensDirection(
-                returnData[i]['lensFacing']! as String),
-            sensorOrientation: returnData[i]['sensorOrientation']! as int,
+            name: typedData['name']! as String,
+            lensDirection:
+                parseCameraLensDirection(typedData['lensFacing']! as String),
+            sensorOrientation: typedData['sensorOrientation']! as int,
           );
           expect(cameras[i], cameraDescription);
         }
diff --git a/packages/camera/camera_web/example/integration_test/camera_test.dart b/packages/camera/camera_web/example/integration_test/camera_test.dart
index 50451b9..705d775 100644
--- a/packages/camera/camera_web/example/integration_test/camera_test.dart
+++ b/packages/camera/camera_web/example/integration_test/camera_test.dart
@@ -1286,11 +1286,10 @@
             capturedVideoPartTwo,
           ];
 
-          videoDataAvailableListener
-            ..call(FakeBlobEvent(capturedVideoPartOne))
-            ..call(FakeBlobEvent(capturedVideoPartTwo));
+          videoDataAvailableListener(FakeBlobEvent(capturedVideoPartOne));
+          videoDataAvailableListener(FakeBlobEvent(capturedVideoPartTwo));
 
-          videoRecordingStoppedListener.call(Event('stop'));
+          videoRecordingStoppedListener(Event('stop'));
 
           final XFile videoFile = await videoFileFuture;
 
@@ -1378,7 +1377,7 @@
 
           when(() => mediaRecorder.state).thenReturn('recording');
 
-          videoDataAvailableListener.call(FakeBlobEvent(Blob(<Object>[])));
+          videoDataAvailableListener(FakeBlobEvent(Blob(<Object>[])));
 
           await Future<void>.microtask(() {});
 
@@ -1412,7 +1411,7 @@
 
           await camera.startVideoRecording();
 
-          videoRecordingStoppedListener.call(Event('stop'));
+          videoRecordingStoppedListener(Event('stop'));
 
           await Future<void>.microtask(() {});
 
@@ -1435,7 +1434,7 @@
 
           await camera.startVideoRecording();
 
-          videoRecordingStoppedListener.call(Event('stop'));
+          videoRecordingStoppedListener(Event('stop'));
 
           await Future<void>.microtask(() {});
 
@@ -1464,7 +1463,7 @@
 
           await camera.startVideoRecording();
 
-          videoRecordingStoppedListener.call(Event('stop'));
+          videoRecordingStoppedListener(Event('stop'));
 
           await Future<void>.microtask(() {});
 
@@ -1588,8 +1587,8 @@
             return finalVideo!;
           };
 
-          videoDataAvailableListener.call(FakeBlobEvent(Blob(<Object>[])));
-          videoRecordingStoppedListener.call(Event('stop'));
+          videoDataAvailableListener(FakeBlobEvent(Blob(<Object>[])));
+          videoRecordingStoppedListener(Event('stop'));
 
           expect(
             await streamQueue.next,
diff --git a/packages/camera/camera_windows/CHANGELOG.md b/packages/camera/camera_windows/CHANGELOG.md
index f46bb66..a6269b9 100644
--- a/packages/camera/camera_windows/CHANGELOG.md
+++ b/packages/camera/camera_windows/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.2.1+4
+
+* Updates code for stricter lint checks.
+
 ## 0.2.1+3
 
 * Updates to latest camera platform interface but fails if user attempts to use streaming with recording (since streaming is currently unsupported on Windows).
diff --git a/packages/camera/camera_windows/lib/camera_windows.dart b/packages/camera/camera_windows/lib/camera_windows.dart
index 79dd305..4b0c158 100644
--- a/packages/camera/camera_windows/lib/camera_windows.dart
+++ b/packages/camera/camera_windows/lib/camera_windows.dart
@@ -399,24 +399,25 @@
         );
         break;
       case 'video_recorded':
+        final Map<String, Object?> arguments =
+            (call.arguments as Map<Object?, Object?>).cast<String, Object?>();
+        final int? maxDuration = arguments['maxVideoDuration'] as int?;
         // This is called if maxVideoDuration was given on record start.
         cameraEventStreamController.add(
           VideoRecordedEvent(
             cameraId,
-            XFile(call.arguments['path'] as String),
-            call.arguments['maxVideoDuration'] != null
-                ? Duration(
-                    milliseconds: call.arguments['maxVideoDuration'] as int,
-                  )
-                : null,
+            XFile(arguments['path']! as String),
+            maxDuration != null ? Duration(milliseconds: maxDuration) : null,
           ),
         );
         break;
       case 'error':
+        final Map<String, Object?> arguments =
+            (call.arguments as Map<Object?, Object?>).cast<String, Object?>();
         cameraEventStreamController.add(
           CameraErrorEvent(
             cameraId,
-            call.arguments['description'] as String,
+            arguments['description']! as String,
           ),
         );
         break;
diff --git a/packages/camera/camera_windows/pubspec.yaml b/packages/camera/camera_windows/pubspec.yaml
index 523ee14..d87491a 100644
--- a/packages/camera/camera_windows/pubspec.yaml
+++ b/packages/camera/camera_windows/pubspec.yaml
@@ -2,7 +2,7 @@
 description: A Flutter plugin for getting information about and controlling the camera on Windows.
 repository: https://github.com/flutter/plugins/tree/main/packages/camera/camera_windows
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+camera%22
-version: 0.2.1+3
+version: 0.2.1+4
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
diff --git a/packages/camera/camera_windows/test/camera_windows_test.dart b/packages/camera/camera_windows/test/camera_windows_test.dart
index 615020e..8d7b5d3 100644
--- a/packages/camera/camera_windows/test/camera_windows_test.dart
+++ b/packages/camera/camera_windows/test/camera_windows_test.dart
@@ -335,11 +335,13 @@
         ]);
         expect(cameras.length, returnData.length);
         for (int i = 0; i < returnData.length; i++) {
+          final Map<String, Object?> typedData =
+              (returnData[i] as Map<dynamic, dynamic>).cast<String, Object?>();
           final CameraDescription cameraDescription = CameraDescription(
-            name: returnData[i]['name']! as String,
-            lensDirection: plugin.parseCameraLensDirection(
-                returnData[i]['lensFacing']! as String),
-            sensorOrientation: returnData[i]['sensorOrientation']! as int,
+            name: typedData['name']! as String,
+            lensDirection: plugin
+                .parseCameraLensDirection(typedData['lensFacing']! as String),
+            sensorOrientation: typedData['sensorOrientation']! as int,
           );
           expect(cameras[i], cameraDescription);
         }
diff --git a/packages/google_maps_flutter/google_maps_flutter/test/fake_maps_controllers.dart b/packages/google_maps_flutter/google_maps_flutter/test/fake_maps_controllers.dart
index 9fe6923..b2747c9 100644
--- a/packages/google_maps_flutter/google_maps_flutter/test/fake_maps_controllers.dart
+++ b/packages/google_maps_flutter/google_maps_flutter/test/fake_maps_controllers.dart
@@ -93,7 +93,9 @@
   Future<dynamic> onMethodCall(MethodCall call) {
     switch (call.method) {
       case 'map#update':
-        updateOptions(call.arguments['options'] as Map<dynamic, dynamic>);
+        final Map<String, Object?> arguments =
+            (call.arguments as Map<Object?, Object?>).cast<String, Object?>();
+        updateOptions(arguments['options']! as Map<dynamic, dynamic>);
         return Future<void>.sync(() {});
       case 'markers#update':
         updateMarkers(call.arguments as Map<dynamic, dynamic>?);
@@ -218,17 +220,18 @@
     return result;
   }
 
+  // Converts a list of points expressed as two-element lists of doubles into
+  // a list of `LatLng`s. All list items are assumed to be non-null.
   List<LatLng> _deserializePoints(List<dynamic> points) {
-    return points.map<LatLng>((dynamic list) {
-      return LatLng(list[0] as double, list[1] as double);
+    return points.map<LatLng>((dynamic item) {
+      final List<Object?> list = item as List<Object?>;
+      return LatLng(list[0]! as double, list[1]! as double);
     }).toList();
   }
 
   List<List<LatLng>> _deserializeHoles(List<dynamic> holes) {
     return holes.map<List<LatLng>>((dynamic hole) {
-      return hole.map<LatLng>((dynamic list) {
-        return LatLng(list[0] as double, list[1] as double);
-      }).toList() as List<LatLng>;
+      return _deserializePoints(hole as List<dynamic>);
     }).toList();
   }
 
diff --git a/packages/google_maps_flutter/google_maps_flutter_android/CHANGELOG.md b/packages/google_maps_flutter/google_maps_flutter_android/CHANGELOG.md
index 7b697b4..66c5fcf 100644
--- a/packages/google_maps_flutter/google_maps_flutter_android/CHANGELOG.md
+++ b/packages/google_maps_flutter/google_maps_flutter_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.4.2
+
+* Updates code for stricter lint checks.
+
 ## 2.4.1
 
 * Update `androidx.test.espresso:espresso-core` to 3.5.1.
diff --git a/packages/google_maps_flutter/google_maps_flutter_android/lib/src/google_maps_flutter_android.dart b/packages/google_maps_flutter/google_maps_flutter_android/lib/src/google_maps_flutter_android.dart
index 11af3fe..0188bb1 100644
--- a/packages/google_maps_flutter/google_maps_flutter_android/lib/src/google_maps_flutter_android.dart
+++ b/packages/google_maps_flutter/google_maps_flutter_android/lib/src/google_maps_flutter_android.dart
@@ -190,81 +190,93 @@
         _mapEventStreamController.add(CameraMoveStartedEvent(mapId));
         break;
       case 'camera#onMove':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(CameraMoveEvent(
           mapId,
-          CameraPosition.fromMap(call.arguments['position'])!,
+          CameraPosition.fromMap(arguments['position'])!,
         ));
         break;
       case 'camera#onIdle':
         _mapEventStreamController.add(CameraIdleEvent(mapId));
         break;
       case 'marker#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MarkerTapEvent(
           mapId,
-          MarkerId(call.arguments['markerId'] as String),
+          MarkerId(arguments['markerId']! as String),
         ));
         break;
       case 'marker#onDragStart':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MarkerDragStartEvent(
           mapId,
-          LatLng.fromJson(call.arguments['position'])!,
-          MarkerId(call.arguments['markerId'] as String),
+          LatLng.fromJson(arguments['position'])!,
+          MarkerId(arguments['markerId']! as String),
         ));
         break;
       case 'marker#onDrag':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MarkerDragEvent(
           mapId,
-          LatLng.fromJson(call.arguments['position'])!,
-          MarkerId(call.arguments['markerId'] as String),
+          LatLng.fromJson(arguments['position'])!,
+          MarkerId(arguments['markerId']! as String),
         ));
         break;
       case 'marker#onDragEnd':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MarkerDragEndEvent(
           mapId,
-          LatLng.fromJson(call.arguments['position'])!,
-          MarkerId(call.arguments['markerId'] as String),
+          LatLng.fromJson(arguments['position'])!,
+          MarkerId(arguments['markerId']! as String),
         ));
         break;
       case 'infoWindow#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(InfoWindowTapEvent(
           mapId,
-          MarkerId(call.arguments['markerId'] as String),
+          MarkerId(arguments['markerId']! as String),
         ));
         break;
       case 'polyline#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(PolylineTapEvent(
           mapId,
-          PolylineId(call.arguments['polylineId'] as String),
+          PolylineId(arguments['polylineId']! as String),
         ));
         break;
       case 'polygon#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(PolygonTapEvent(
           mapId,
-          PolygonId(call.arguments['polygonId'] as String),
+          PolygonId(arguments['polygonId']! as String),
         ));
         break;
       case 'circle#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(CircleTapEvent(
           mapId,
-          CircleId(call.arguments['circleId'] as String),
+          CircleId(arguments['circleId']! as String),
         ));
         break;
       case 'map#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MapTapEvent(
           mapId,
-          LatLng.fromJson(call.arguments['position'])!,
+          LatLng.fromJson(arguments['position'])!,
         ));
         break;
       case 'map#onLongPress':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MapLongPressEvent(
           mapId,
-          LatLng.fromJson(call.arguments['position'])!,
+          LatLng.fromJson(arguments['position'])!,
         ));
         break;
       case 'tileOverlay#getTile':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         final Map<TileOverlayId, TileOverlay>? tileOverlaysForThisMap =
             _tileOverlays[mapId];
-        final String tileOverlayId = call.arguments['tileOverlayId'] as String;
+        final String tileOverlayId = arguments['tileOverlayId']! as String;
         final TileOverlay? tileOverlay =
             tileOverlaysForThisMap?[TileOverlayId(tileOverlayId)];
         final TileProvider? tileProvider = tileOverlay?.tileProvider;
@@ -272,9 +284,9 @@
           return TileProvider.noTile.toJson();
         }
         final Tile tile = await tileProvider.getTile(
-          call.arguments['x'] as int,
-          call.arguments['y'] as int,
-          call.arguments['zoom'] as int?,
+          arguments['x']! as int,
+          arguments['y']! as int,
+          arguments['zoom'] as int?,
         );
         return tile.toJson();
       default:
@@ -282,6 +294,14 @@
     }
   }
 
+  /// Returns the arguments of [call] as typed string-keyed Map.
+  ///
+  /// This does not do any type validation, so is only safe to call if the
+  /// arguments are known to be a map.
+  Map<String, Object?> _getArgumentDictionary(MethodCall call) {
+    return (call.arguments as Map<Object?, Object?>).cast<String, Object?>();
+  }
+
   @override
   Future<void> updateMapOptions(
     Map<String, dynamic> optionsUpdate, {
diff --git a/packages/google_maps_flutter/google_maps_flutter_android/pubspec.yaml b/packages/google_maps_flutter/google_maps_flutter_android/pubspec.yaml
index ee7a61d..492193e 100644
--- a/packages/google_maps_flutter/google_maps_flutter_android/pubspec.yaml
+++ b/packages/google_maps_flutter/google_maps_flutter_android/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Android implementation of the google_maps_flutter plugin.
 repository: https://github.com/flutter/plugins/tree/main/packages/google_maps_flutter/google_maps_flutter_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+maps%22
-version: 2.4.1
+version: 2.4.2
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
diff --git a/packages/google_maps_flutter/google_maps_flutter_ios/CHANGELOG.md b/packages/google_maps_flutter/google_maps_flutter_ios/CHANGELOG.md
index e5f232d..fa135d8 100644
--- a/packages/google_maps_flutter/google_maps_flutter_ios/CHANGELOG.md
+++ b/packages/google_maps_flutter/google_maps_flutter_ios/CHANGELOG.md
@@ -1,5 +1,6 @@
-## NEXT
+## 2.1.13
 
+* Updates code for stricter lint checks.
 * Updates code for new analysis options.
 * Re-enable XCUITests: testUserInterface.
 * Remove unnecessary `RunnerUITests` target from Podfile of the example app.
diff --git a/packages/google_maps_flutter/google_maps_flutter_ios/lib/src/google_maps_flutter_ios.dart b/packages/google_maps_flutter/google_maps_flutter_ios/lib/src/google_maps_flutter_ios.dart
index 5298377..a0b46f0 100644
--- a/packages/google_maps_flutter/google_maps_flutter_ios/lib/src/google_maps_flutter_ios.dart
+++ b/packages/google_maps_flutter/google_maps_flutter_ios/lib/src/google_maps_flutter_ios.dart
@@ -172,81 +172,93 @@
         _mapEventStreamController.add(CameraMoveStartedEvent(mapId));
         break;
       case 'camera#onMove':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(CameraMoveEvent(
           mapId,
-          CameraPosition.fromMap(call.arguments['position'])!,
+          CameraPosition.fromMap(arguments['position'])!,
         ));
         break;
       case 'camera#onIdle':
         _mapEventStreamController.add(CameraIdleEvent(mapId));
         break;
       case 'marker#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MarkerTapEvent(
           mapId,
-          MarkerId(call.arguments['markerId'] as String),
+          MarkerId(arguments['markerId']! as String),
         ));
         break;
       case 'marker#onDragStart':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MarkerDragStartEvent(
           mapId,
-          LatLng.fromJson(call.arguments['position'])!,
-          MarkerId(call.arguments['markerId'] as String),
+          LatLng.fromJson(arguments['position'])!,
+          MarkerId(arguments['markerId']! as String),
         ));
         break;
       case 'marker#onDrag':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MarkerDragEvent(
           mapId,
-          LatLng.fromJson(call.arguments['position'])!,
-          MarkerId(call.arguments['markerId'] as String),
+          LatLng.fromJson(arguments['position'])!,
+          MarkerId(arguments['markerId']! as String),
         ));
         break;
       case 'marker#onDragEnd':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MarkerDragEndEvent(
           mapId,
-          LatLng.fromJson(call.arguments['position'])!,
-          MarkerId(call.arguments['markerId'] as String),
+          LatLng.fromJson(arguments['position'])!,
+          MarkerId(arguments['markerId']! as String),
         ));
         break;
       case 'infoWindow#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(InfoWindowTapEvent(
           mapId,
-          MarkerId(call.arguments['markerId'] as String),
+          MarkerId(arguments['markerId']! as String),
         ));
         break;
       case 'polyline#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(PolylineTapEvent(
           mapId,
-          PolylineId(call.arguments['polylineId'] as String),
+          PolylineId(arguments['polylineId']! as String),
         ));
         break;
       case 'polygon#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(PolygonTapEvent(
           mapId,
-          PolygonId(call.arguments['polygonId'] as String),
+          PolygonId(arguments['polygonId']! as String),
         ));
         break;
       case 'circle#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(CircleTapEvent(
           mapId,
-          CircleId(call.arguments['circleId'] as String),
+          CircleId(arguments['circleId']! as String),
         ));
         break;
       case 'map#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MapTapEvent(
           mapId,
-          LatLng.fromJson(call.arguments['position'])!,
+          LatLng.fromJson(arguments['position'])!,
         ));
         break;
       case 'map#onLongPress':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MapLongPressEvent(
           mapId,
-          LatLng.fromJson(call.arguments['position'])!,
+          LatLng.fromJson(arguments['position'])!,
         ));
         break;
       case 'tileOverlay#getTile':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         final Map<TileOverlayId, TileOverlay>? tileOverlaysForThisMap =
             _tileOverlays[mapId];
-        final String tileOverlayId = call.arguments['tileOverlayId'] as String;
+        final String tileOverlayId = arguments['tileOverlayId']! as String;
         final TileOverlay? tileOverlay =
             tileOverlaysForThisMap?[TileOverlayId(tileOverlayId)];
         final TileProvider? tileProvider = tileOverlay?.tileProvider;
@@ -254,9 +266,9 @@
           return TileProvider.noTile.toJson();
         }
         final Tile tile = await tileProvider.getTile(
-          call.arguments['x'] as int,
-          call.arguments['y'] as int,
-          call.arguments['zoom'] as int?,
+          arguments['x']! as int,
+          arguments['y']! as int,
+          arguments['zoom'] as int?,
         );
         return tile.toJson();
       default:
@@ -264,6 +276,14 @@
     }
   }
 
+  /// Returns the arguments of [call] as typed string-keyed Map.
+  ///
+  /// This does not do any type validation, so is only safe to call if the
+  /// arguments are known to be a map.
+  Map<String, Object?> _getArgumentDictionary(MethodCall call) {
+    return (call.arguments as Map<Object?, Object?>).cast<String, Object?>();
+  }
+
   @override
   Future<void> updateMapOptions(
     Map<String, dynamic> optionsUpdate, {
diff --git a/packages/google_maps_flutter/google_maps_flutter_ios/pubspec.yaml b/packages/google_maps_flutter/google_maps_flutter_ios/pubspec.yaml
index 7ca13a9..579b243 100644
--- a/packages/google_maps_flutter/google_maps_flutter_ios/pubspec.yaml
+++ b/packages/google_maps_flutter/google_maps_flutter_ios/pubspec.yaml
@@ -2,7 +2,7 @@
 description: iOS implementation of the google_maps_flutter plugin.
 repository: https://github.com/flutter/plugins/tree/main/packages/google_maps_flutter/google_maps_flutter_ios
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+maps%22
-version: 2.1.12
+version: 2.1.13
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
diff --git a/packages/google_maps_flutter/google_maps_flutter_platform_interface/CHANGELOG.md b/packages/google_maps_flutter/google_maps_flutter_platform_interface/CHANGELOG.md
index a41d1fe..307b700 100644
--- a/packages/google_maps_flutter/google_maps_flutter_platform_interface/CHANGELOG.md
+++ b/packages/google_maps_flutter/google_maps_flutter_platform_interface/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.2.5
+
+* Updates code for stricter lint checks.
+
 ## 2.2.4
 
 * Updates code for `no_leading_underscores_for_local_identifiers` lint.
diff --git a/packages/google_maps_flutter/google_maps_flutter_platform_interface/lib/src/method_channel/method_channel_google_maps_flutter.dart b/packages/google_maps_flutter/google_maps_flutter_platform_interface/lib/src/method_channel/method_channel_google_maps_flutter.dart
index e17510f..3fd860e 100644
--- a/packages/google_maps_flutter/google_maps_flutter_platform_interface/lib/src/method_channel/method_channel_google_maps_flutter.dart
+++ b/packages/google_maps_flutter/google_maps_flutter_platform_interface/lib/src/method_channel/method_channel_google_maps_flutter.dart
@@ -175,81 +175,93 @@
         _mapEventStreamController.add(CameraMoveStartedEvent(mapId));
         break;
       case 'camera#onMove':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(CameraMoveEvent(
           mapId,
-          CameraPosition.fromMap(call.arguments['position'])!,
+          CameraPosition.fromMap(arguments['position'])!,
         ));
         break;
       case 'camera#onIdle':
         _mapEventStreamController.add(CameraIdleEvent(mapId));
         break;
       case 'marker#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MarkerTapEvent(
           mapId,
-          MarkerId(call.arguments['markerId'] as String),
+          MarkerId(arguments['markerId']! as String),
         ));
         break;
       case 'marker#onDragStart':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MarkerDragStartEvent(
           mapId,
-          LatLng.fromJson(call.arguments['position'])!,
-          MarkerId(call.arguments['markerId'] as String),
+          LatLng.fromJson(arguments['position'])!,
+          MarkerId(arguments['markerId']! as String),
         ));
         break;
       case 'marker#onDrag':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MarkerDragEvent(
           mapId,
-          LatLng.fromJson(call.arguments['position'])!,
-          MarkerId(call.arguments['markerId'] as String),
+          LatLng.fromJson(arguments['position'])!,
+          MarkerId(arguments['markerId']! as String),
         ));
         break;
       case 'marker#onDragEnd':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MarkerDragEndEvent(
           mapId,
-          LatLng.fromJson(call.arguments['position'])!,
-          MarkerId(call.arguments['markerId'] as String),
+          LatLng.fromJson(arguments['position'])!,
+          MarkerId(arguments['markerId']! as String),
         ));
         break;
       case 'infoWindow#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(InfoWindowTapEvent(
           mapId,
-          MarkerId(call.arguments['markerId'] as String),
+          MarkerId(arguments['markerId']! as String),
         ));
         break;
       case 'polyline#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(PolylineTapEvent(
           mapId,
-          PolylineId(call.arguments['polylineId'] as String),
+          PolylineId(arguments['polylineId']! as String),
         ));
         break;
       case 'polygon#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(PolygonTapEvent(
           mapId,
-          PolygonId(call.arguments['polygonId'] as String),
+          PolygonId(arguments['polygonId']! as String),
         ));
         break;
       case 'circle#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(CircleTapEvent(
           mapId,
-          CircleId(call.arguments['circleId'] as String),
+          CircleId(arguments['circleId']! as String),
         ));
         break;
       case 'map#onTap':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MapTapEvent(
           mapId,
-          LatLng.fromJson(call.arguments['position'])!,
+          LatLng.fromJson(arguments['position'])!,
         ));
         break;
       case 'map#onLongPress':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         _mapEventStreamController.add(MapLongPressEvent(
           mapId,
-          LatLng.fromJson(call.arguments['position'])!,
+          LatLng.fromJson(arguments['position'])!,
         ));
         break;
       case 'tileOverlay#getTile':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         final Map<TileOverlayId, TileOverlay>? tileOverlaysForThisMap =
             _tileOverlays[mapId];
-        final String tileOverlayId = call.arguments['tileOverlayId'] as String;
+        final String tileOverlayId = arguments['tileOverlayId']! as String;
         final TileOverlay? tileOverlay =
             tileOverlaysForThisMap?[TileOverlayId(tileOverlayId)];
         final TileProvider? tileProvider = tileOverlay?.tileProvider;
@@ -257,9 +269,9 @@
           return TileProvider.noTile.toJson();
         }
         final Tile tile = await tileProvider.getTile(
-          call.arguments['x'] as int,
-          call.arguments['y'] as int,
-          call.arguments['zoom'] as int?,
+          arguments['x']! as int,
+          arguments['y']! as int,
+          arguments['zoom'] as int?,
         );
         return tile.toJson();
       default:
@@ -267,6 +279,14 @@
     }
   }
 
+  /// Returns the arguments of [call] as typed string-keyed Map.
+  ///
+  /// This does not do any type validation, so is only safe to call if the
+  /// arguments are known to be a map.
+  Map<String, Object?> _getArgumentDictionary(MethodCall call) {
+    return (call.arguments as Map<Object?, Object?>).cast<String, Object?>();
+  }
+
   @override
   Future<void> updateMapOptions(
     Map<String, dynamic> optionsUpdate, {
diff --git a/packages/google_maps_flutter/google_maps_flutter_platform_interface/pubspec.yaml b/packages/google_maps_flutter/google_maps_flutter_platform_interface/pubspec.yaml
index 5639ee8..40b058a 100644
--- a/packages/google_maps_flutter/google_maps_flutter_platform_interface/pubspec.yaml
+++ b/packages/google_maps_flutter/google_maps_flutter_platform_interface/pubspec.yaml
@@ -4,7 +4,7 @@
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+maps%22
 # NOTE: We strongly prefer non-breaking changes, even at the expense of a
 # less-clean API. See https://flutter.dev/go/platform-interface-breaking-changes
-version: 2.2.4
+version: 2.2.5
 
 environment:
   sdk: '>=2.12.0 <3.0.0'
diff --git a/packages/google_maps_flutter/google_maps_flutter_web/CHANGELOG.md b/packages/google_maps_flutter/google_maps_flutter_web/CHANGELOG.md
index 2333f7d..3bbc08a 100644
--- a/packages/google_maps_flutter/google_maps_flutter_web/CHANGELOG.md
+++ b/packages/google_maps_flutter/google_maps_flutter_web/CHANGELOG.md
@@ -1,5 +1,6 @@
-## NEXT
+## 0.4.0+4
 
+* Updates code for stricter lint checks.
 * Updates code for `no_leading_underscores_for_local_identifiers` lint.
 
 ## 0.4.0+3
diff --git a/packages/google_maps_flutter/google_maps_flutter_web/lib/src/convert.dart b/packages/google_maps_flutter/google_maps_flutter_web/lib/src/convert.dart
index 2b09950..d5f27ee 100644
--- a/packages/google_maps_flutter/google_maps_flutter_web/lib/src/convert.dart
+++ b/packages/google_maps_flutter/google_maps_flutter_web/lib/src/convert.dart
@@ -416,31 +416,46 @@
 
 // Translates a [CameraUpdate] into operations on a [gmaps.GMap].
 void _applyCameraUpdate(gmaps.GMap map, CameraUpdate update) {
+  // Casts [value] to a JSON dictionary (string -> nullable object). [value]
+  // must be a non-null JSON dictionary.
+  Map<String, Object?> asJsonObject(dynamic value) {
+    return (value as Map<Object?, Object?>).cast<String, Object?>();
+  }
+
+  // Casts [value] to a JSON list. [value] must be a non-null JSON list.
+  List<Object?> asJsonList(dynamic value) {
+    return value as List<Object?>;
+  }
+
   final List<dynamic> json = update.toJson() as List<dynamic>;
   switch (json[0]) {
     case 'newCameraPosition':
-      map.heading = json[1]['bearing'] as num?;
-      map.zoom = json[1]['zoom'] as num?;
+      final Map<String, Object?> position = asJsonObject(json[1]);
+      final List<Object?> latLng = asJsonList(position['target']);
+      map.heading = position['bearing'] as num?;
+      map.zoom = position['zoom'] as num?;
       map.panTo(
-        gmaps.LatLng(
-          json[1]['target'][0] as num?,
-          json[1]['target'][1] as num?,
-        ),
+        gmaps.LatLng(latLng[0] as num?, latLng[1] as num?),
       );
-      map.tilt = json[1]['tilt'] as num?;
+      map.tilt = position['tilt'] as num?;
       break;
     case 'newLatLng':
-      map.panTo(gmaps.LatLng(json[1][0] as num?, json[1][1] as num?));
+      final List<Object?> latLng = asJsonList(json[1]);
+      map.panTo(gmaps.LatLng(latLng[0] as num?, latLng[1] as num?));
       break;
     case 'newLatLngZoom':
+      final List<Object?> latLng = asJsonList(json[1]);
       map.zoom = json[2] as num?;
-      map.panTo(gmaps.LatLng(json[1][0] as num?, json[1][1] as num?));
+      map.panTo(gmaps.LatLng(latLng[0] as num?, latLng[1] as num?));
       break;
     case 'newLatLngBounds':
+      final List<Object?> latLngPair = asJsonList(json[1]);
+      final List<Object?> latLng1 = asJsonList(latLngPair[0]);
+      final List<Object?> latLng2 = asJsonList(latLngPair[1]);
       map.fitBounds(
         gmaps.LatLngBounds(
-          gmaps.LatLng(json[1][0][0] as num?, json[1][0][1] as num?),
-          gmaps.LatLng(json[1][1][0] as num?, json[1][1][1] as num?),
+          gmaps.LatLng(latLng1[0] as num?, latLng1[1] as num?),
+          gmaps.LatLng(latLng2[0] as num?, latLng2[1] as num?),
         ),
       );
       // padding = json[2];
@@ -456,10 +471,11 @@
       final int newZoomDelta =
           zoomDelta < 0 ? zoomDelta.floor() : zoomDelta.ceil();
       if (json.length == 3) {
+        final List<Object?> latLng = asJsonList(json[2]);
         // With focus
         try {
           focusLatLng =
-              _pixelToLatLng(map, json[2][0] as int, json[2][1] as int);
+              _pixelToLatLng(map, latLng[0]! as int, latLng[1]! as int);
         } catch (e) {
           // https://github.com/a14n/dart-google-maps/issues/87
           // print('Error computing new focus LatLng. JS Error: ' + e.toString());
diff --git a/packages/google_maps_flutter/google_maps_flutter_web/pubspec.yaml b/packages/google_maps_flutter/google_maps_flutter_web/pubspec.yaml
index 572d911..6278ab0 100644
--- a/packages/google_maps_flutter/google_maps_flutter_web/pubspec.yaml
+++ b/packages/google_maps_flutter/google_maps_flutter_web/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Web platform implementation of google_maps_flutter
 repository: https://github.com/flutter/plugins/tree/main/packages/google_maps_flutter/google_maps_flutter_web
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+maps%22
-version: 0.4.0+3
+version: 0.4.0+4
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
diff --git a/packages/google_sign_in/google_sign_in/CHANGELOG.md b/packages/google_sign_in/google_sign_in/CHANGELOG.md
index 9349784..c7ddb6b 100644
--- a/packages/google_sign_in/google_sign_in/CHANGELOG.md
+++ b/packages/google_sign_in/google_sign_in/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 5.4.3
+
+* Updates code for stricter lint checks.
+
 ## 5.4.2
 
 * Updates minimum Flutter version to 2.10.
diff --git a/packages/google_sign_in/google_sign_in/example/lib/main.dart b/packages/google_sign_in/google_sign_in/example/lib/main.dart
index 889993b..271069e 100644
--- a/packages/google_sign_in/google_sign_in/example/lib/main.dart
+++ b/packages/google_sign_in/google_sign_in/example/lib/main.dart
@@ -86,12 +86,14 @@
   String? _pickFirstNamedContact(Map<String, dynamic> data) {
     final List<dynamic>? connections = data['connections'] as List<dynamic>?;
     final Map<String, dynamic>? contact = connections?.firstWhere(
-      (dynamic contact) => contact['names'] != null,
+      (dynamic contact) => (contact as Map<Object?, dynamic>)['names'] != null,
       orElse: () => null,
     ) as Map<String, dynamic>?;
     if (contact != null) {
-      final Map<String, dynamic>? name = contact['names'].firstWhere(
-        (dynamic name) => name['displayName'] != null,
+      final List<dynamic> names = contact['names'] as List<dynamic>;
+      final Map<String, dynamic>? name = names.firstWhere(
+        (dynamic name) =>
+            (name as Map<Object?, dynamic>)['displayName'] != null,
         orElse: () => null,
       ) as Map<String, dynamic>?;
       if (name != null) {
diff --git a/packages/google_sign_in/google_sign_in/lib/google_sign_in.dart b/packages/google_sign_in/google_sign_in/lib/google_sign_in.dart
index 3ae0223..8e908dc 100644
--- a/packages/google_sign_in/google_sign_in/lib/google_sign_in.dart
+++ b/packages/google_sign_in/google_sign_in/lib/google_sign_in.dart
@@ -267,7 +267,8 @@
   // Future that completes when we've finished calling `init` on the native side
   Future<void>? _initialization;
 
-  Future<GoogleSignInAccount?> _callMethod(Function method) async {
+  Future<GoogleSignInAccount?> _callMethod(
+      Future<dynamic> Function() method) async {
     await _ensureInitialized();
 
     final dynamic response = await method();
@@ -324,7 +325,7 @@
   /// method call may be skipped, if there's already [_currentUser] information.
   /// This is used from the [signIn] and [signInSilently] methods.
   Future<GoogleSignInAccount?> _addMethodCall(
-    Function method, {
+    Future<dynamic> Function() method, {
     bool canSkipCall = false,
   }) async {
     Future<GoogleSignInAccount?> response;
diff --git a/packages/google_sign_in/google_sign_in/pubspec.yaml b/packages/google_sign_in/google_sign_in/pubspec.yaml
index c32dee7..f6e1faf 100644
--- a/packages/google_sign_in/google_sign_in/pubspec.yaml
+++ b/packages/google_sign_in/google_sign_in/pubspec.yaml
@@ -3,7 +3,7 @@
   for signing in with a Google account on Android and iOS.
 repository: https://github.com/flutter/plugins/tree/main/packages/google_sign_in/google_sign_in
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+google_sign_in%22
-version: 5.4.2
+version: 5.4.3
 
 
 environment:
diff --git a/packages/google_sign_in/google_sign_in_android/test/google_sign_in_android_test.dart b/packages/google_sign_in/google_sign_in_android/test/google_sign_in_android_test.dart
index c081418..2565836 100644
--- a/packages/google_sign_in/google_sign_in_android/test/google_sign_in_android_test.dart
+++ b/packages/google_sign_in/google_sign_in_android/test/google_sign_in_android_test.dart
@@ -99,7 +99,7 @@
   });
 
   test('Other functions pass through arguments to the channel', () async {
-    final Map<Function, Matcher> tests = <Function, Matcher>{
+    final Map<void Function(), Matcher> tests = <void Function(), Matcher>{
       () {
         googleSignIn.init(
             hostedDomain: 'example.com',
@@ -152,7 +152,7 @@
       googleSignIn.isSignedIn: isMethodCall('isSignedIn', arguments: null),
     };
 
-    for (final Function f in tests.keys) {
+    for (final void Function() f in tests.keys) {
       f();
     }
 
diff --git a/packages/google_sign_in/google_sign_in_ios/test/google_sign_in_ios_test.dart b/packages/google_sign_in/google_sign_in_ios/test/google_sign_in_ios_test.dart
index 4584298..0fee1af 100644
--- a/packages/google_sign_in/google_sign_in_ios/test/google_sign_in_ios_test.dart
+++ b/packages/google_sign_in/google_sign_in_ios/test/google_sign_in_ios_test.dart
@@ -114,7 +114,7 @@
   });
 
   test('Other functions pass through arguments to the channel', () async {
-    final Map<Function, Matcher> tests = <Function, Matcher>{
+    final Map<void Function(), Matcher> tests = <void Function(), Matcher>{
       () {
         googleSignIn.init(
             hostedDomain: 'example.com',
@@ -155,7 +155,7 @@
       googleSignIn.isSignedIn: isMethodCall('isSignedIn', arguments: null),
     };
 
-    for (final Function f in tests.keys) {
+    for (final void Function() f in tests.keys) {
       f();
     }
 
diff --git a/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart b/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
index 944ad34..0972d0b 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
@@ -95,7 +95,7 @@
     });
 
     test('Other functions pass through arguments to the channel', () async {
-      final Map<Function, Matcher> tests = <Function, Matcher>{
+      final Map<void Function(), Matcher> tests = <void Function(), Matcher>{
         () {
           googleSignIn.init(
               hostedDomain: 'example.com',
@@ -132,7 +132,7 @@
         googleSignIn.isSignedIn: isMethodCall('isSignedIn', arguments: null),
       };
 
-      for (final Function f in tests.keys) {
+      for (final void Function() f in tests.keys) {
         f();
       }
 
diff --git a/packages/image_picker/image_picker_windows/test/image_picker_windows_test.dart b/packages/image_picker/image_picker_windows/test/image_picker_windows_test.dart
index 3b27c08..f8adde4 100644
--- a/packages/image_picker/image_picker_windows/test/image_picker_windows_test.dart
+++ b/packages/image_picker/image_picker_windows/test/image_picker_windows_test.dart
@@ -15,6 +15,12 @@
 void main() {
   TestWidgetsFlutterBinding.ensureInitialized();
 
+  // Returns the captured type groups from a mock call result, assuming that
+  // exactly one call was made and only the type groups were captured.
+  List<XTypeGroup> capturedTypeGroups(VerificationResult result) {
+    return result.captured.single as List<XTypeGroup>;
+  }
+
   group('$ImagePickerWindows()', () {
     final ImagePickerWindows plugin = ImagePickerWindows();
     late MockFileSelectorPlatform mockFileSelectorPlatform;
@@ -42,12 +48,10 @@
       test('pickImage passes the accepted type groups correctly', () async {
         await plugin.pickImage(source: ImageSource.gallery);
 
-        expect(
-            verify(mockFileSelectorPlatform.openFile(
-                    acceptedTypeGroups: captureAnyNamed('acceptedTypeGroups')))
-                .captured
-                .single[0]
-                .extensions,
+        final VerificationResult result = verify(
+            mockFileSelectorPlatform.openFile(
+                acceptedTypeGroups: captureAnyNamed('acceptedTypeGroups')));
+        expect(capturedTypeGroups(result)[0].extensions,
             ImagePickerWindows.imageFormats);
       });
 
@@ -60,12 +64,10 @@
       test('getImage passes the accepted type groups correctly', () async {
         await plugin.getImage(source: ImageSource.gallery);
 
-        expect(
-            verify(mockFileSelectorPlatform.openFile(
-                    acceptedTypeGroups: captureAnyNamed('acceptedTypeGroups')))
-                .captured
-                .single[0]
-                .extensions,
+        final VerificationResult result = verify(
+            mockFileSelectorPlatform.openFile(
+                acceptedTypeGroups: captureAnyNamed('acceptedTypeGroups')));
+        expect(capturedTypeGroups(result)[0].extensions,
             ImagePickerWindows.imageFormats);
       });
 
@@ -78,12 +80,10 @@
       test('getMultiImage passes the accepted type groups correctly', () async {
         await plugin.getMultiImage();
 
-        expect(
-            verify(mockFileSelectorPlatform.openFiles(
-                    acceptedTypeGroups: captureAnyNamed('acceptedTypeGroups')))
-                .captured
-                .single[0]
-                .extensions,
+        final VerificationResult result = verify(
+            mockFileSelectorPlatform.openFiles(
+                acceptedTypeGroups: captureAnyNamed('acceptedTypeGroups')));
+        expect(capturedTypeGroups(result)[0].extensions,
             ImagePickerWindows.imageFormats);
       });
     });
@@ -91,12 +91,10 @@
       test('pickVideo passes the accepted type groups correctly', () async {
         await plugin.pickVideo(source: ImageSource.gallery);
 
-        expect(
-            verify(mockFileSelectorPlatform.openFile(
-                    acceptedTypeGroups: captureAnyNamed('acceptedTypeGroups')))
-                .captured
-                .single[0]
-                .extensions,
+        final VerificationResult result = verify(
+            mockFileSelectorPlatform.openFile(
+                acceptedTypeGroups: captureAnyNamed('acceptedTypeGroups')));
+        expect(capturedTypeGroups(result)[0].extensions,
             ImagePickerWindows.videoFormats);
       });
 
@@ -109,12 +107,10 @@
       test('getVideo passes the accepted type groups correctly', () async {
         await plugin.getVideo(source: ImageSource.gallery);
 
-        expect(
-            verify(mockFileSelectorPlatform.openFile(
-                    acceptedTypeGroups: captureAnyNamed('acceptedTypeGroups')))
-                .captured
-                .single[0]
-                .extensions,
+        final VerificationResult result = verify(
+            mockFileSelectorPlatform.openFile(
+                acceptedTypeGroups: captureAnyNamed('acceptedTypeGroups')));
+        expect(capturedTypeGroups(result)[0].extensions,
             ImagePickerWindows.videoFormats);
       });
 
diff --git a/packages/in_app_purchase/in_app_purchase_android/CHANGELOG.md b/packages/in_app_purchase/in_app_purchase_android/CHANGELOG.md
index 4aa14a8..11192c3 100644
--- a/packages/in_app_purchase/in_app_purchase_android/CHANGELOG.md
+++ b/packages/in_app_purchase/in_app_purchase_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.2.3+8
+
+* Updates code for stricter lint checks.
+
 ## 0.2.3+7
 
 * Updates code for new analysis options.
diff --git a/packages/in_app_purchase/in_app_purchase_android/lib/src/billing_client_wrappers/billing_client_wrapper.dart b/packages/in_app_purchase/in_app_purchase_android/lib/src/billing_client_wrappers/billing_client_wrapper.dart
index b64eaab..2d4a3f9 100644
--- a/packages/in_app_purchase/in_app_purchase_android/lib/src/billing_client_wrappers/billing_client_wrapper.dart
+++ b/packages/in_app_purchase/in_app_purchase_android/lib/src/billing_client_wrappers/billing_client_wrapper.dart
@@ -343,8 +343,12 @@
             (call.arguments as Map<dynamic, dynamic>).cast<String, dynamic>()));
         break;
       case _kOnBillingServiceDisconnected:
-        final int handle = call.arguments['handle'] as int;
-        await _callbacks[_kOnBillingServiceDisconnected]![handle]();
+        final int handle =
+            (call.arguments as Map<Object?, Object?>)['handle']! as int;
+        final List<OnBillingServiceDisconnected> onDisconnected =
+            _callbacks[_kOnBillingServiceDisconnected]!
+                .cast<OnBillingServiceDisconnected>();
+        onDisconnected[handle]();
         break;
     }
   }
diff --git a/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml b/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml
index d70e5df..663f56f 100644
--- a/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml
+++ b/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml
@@ -2,7 +2,7 @@
 description: An implementation for the Android platform of the Flutter `in_app_purchase` plugin. This uses the Android BillingClient APIs.
 repository: https://github.com/flutter/plugins/tree/main/packages/in_app_purchase/in_app_purchase_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+in_app_purchase%22
-version: 0.2.3+7
+version: 0.2.3+8
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
diff --git a/packages/in_app_purchase/in_app_purchase_android/test/in_app_purchase_android_platform_test.dart b/packages/in_app_purchase/in_app_purchase_android/test/in_app_purchase_android_platform_test.dart
index b6055cc..70e519c 100644
--- a/packages/in_app_purchase/in_app_purchase_android/test/in_app_purchase_android_platform_test.dart
+++ b/packages/in_app_purchase/in_app_purchase_android/test/in_app_purchase_android_platform_test.dart
@@ -426,7 +426,8 @@
           name: consumeMethodName,
           value: buildBillingResultMap(expectedBillingResultForConsume),
           additionalStepBeforeReturn: (dynamic args) {
-            final String purchaseToken = args['purchaseToken'] as String;
+            final String purchaseToken =
+                (args as Map<Object?, Object?>)['purchaseToken']! as String;
             consumeCompleter.complete(purchaseToken);
           });
 
@@ -540,7 +541,8 @@
           name: consumeMethodName,
           value: buildBillingResultMap(expectedBillingResultForConsume),
           additionalStepBeforeReturn: (dynamic args) {
-            final String purchaseToken = args['purchaseToken'] as String;
+            final String purchaseToken =
+                (args as Map<Object?, Object?>)['purchaseToken']! as String;
             consumeCompleter.complete(purchaseToken);
           });
 
@@ -617,7 +619,8 @@
           name: consumeMethodName,
           value: buildBillingResultMap(expectedBillingResultForConsume),
           additionalStepBeforeReturn: (dynamic args) {
-            final String purchaseToken = args['purchaseToken'] as String;
+            final String purchaseToken =
+                (args as Map<Object?, Object?>)['purchaseToken']! as String;
             consumeCompleter.complete(purchaseToken);
           });
 
@@ -682,7 +685,8 @@
           name: consumeMethodName,
           value: buildBillingResultMap(expectedBillingResultForConsume),
           additionalStepBeforeReturn: (dynamic args) {
-            final String purchaseToken = args['purchaseToken'] as String;
+            final String purchaseToken =
+                (args as Map<Object?, Object?>)['purchaseToken']! as String;
             consumeCompleter.complete(purchaseToken);
           });
 
diff --git a/packages/in_app_purchase/in_app_purchase_storekit/CHANGELOG.md b/packages/in_app_purchase/in_app_purchase_storekit/CHANGELOG.md
index 3839419..434caf4 100644
--- a/packages/in_app_purchase/in_app_purchase_storekit/CHANGELOG.md
+++ b/packages/in_app_purchase/in_app_purchase_storekit/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.3.4+1
+
+* Updates code for stricter lint checks.
+
 ## 0.3.4
 
 * Adds macOS as a supported platform.
diff --git a/packages/in_app_purchase/in_app_purchase_storekit/lib/src/store_kit_wrappers/sk_payment_queue_wrapper.dart b/packages/in_app_purchase/in_app_purchase_storekit/lib/src/store_kit_wrappers/sk_payment_queue_wrapper.dart
index d360a2d..859946b 100644
--- a/packages/in_app_purchase/in_app_purchase_storekit/lib/src/store_kit_wrappers/sk_payment_queue_wrapper.dart
+++ b/packages/in_app_purchase/in_app_purchase_storekit/lib/src/store_kit_wrappers/sk_payment_queue_wrapper.dart
@@ -245,11 +245,13 @@
         }
       case 'shouldAddStorePayment':
         {
+          final Map<Object?, Object?> arguments =
+              call.arguments as Map<Object?, Object?>;
           final SKPaymentWrapper payment = SKPaymentWrapper.fromJson(
-              (call.arguments['payment'] as Map<dynamic, dynamic>)
+              (arguments['payment']! as Map<dynamic, dynamic>)
                   .cast<String, dynamic>());
           final SKProductWrapper product = SKProductWrapper.fromJson(
-              (call.arguments['product'] as Map<dynamic, dynamic>)
+              (arguments['product']! as Map<dynamic, dynamic>)
                   .cast<String, dynamic>());
           return Future<void>(() {
             if (observer.shouldAddStorePayment(
@@ -290,12 +292,14 @@
     final SKPaymentQueueDelegateWrapper delegate = _paymentQueueDelegate!;
     switch (call.method) {
       case 'shouldContinueTransaction':
+        final Map<Object?, Object?> arguments =
+            call.arguments as Map<Object?, Object?>;
         final SKPaymentTransactionWrapper transaction =
             SKPaymentTransactionWrapper.fromJson(
-                (call.arguments['transaction'] as Map<dynamic, dynamic>)
+                (arguments['transaction']! as Map<dynamic, dynamic>)
                     .cast<String, dynamic>());
         final SKStorefrontWrapper storefront = SKStorefrontWrapper.fromJson(
-            (call.arguments['storefront'] as Map<dynamic, dynamic>)
+            (arguments['storefront']! as Map<dynamic, dynamic>)
                 .cast<String, dynamic>());
         return delegate.shouldContinueTransaction(transaction, storefront);
       case 'shouldShowPriceConsent':
diff --git a/packages/in_app_purchase/in_app_purchase_storekit/pubspec.yaml b/packages/in_app_purchase/in_app_purchase_storekit/pubspec.yaml
index f45b3ac..339d123 100644
--- a/packages/in_app_purchase/in_app_purchase_storekit/pubspec.yaml
+++ b/packages/in_app_purchase/in_app_purchase_storekit/pubspec.yaml
@@ -2,7 +2,7 @@
 description: An implementation for the iOS and macOS platforms of the Flutter `in_app_purchase` plugin. This uses the StoreKit Framework.
 repository: https://github.com/flutter/plugins/tree/main/packages/in_app_purchase/in_app_purchase_storekit
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+in_app_purchase%22
-version: 0.3.4
+version: 0.3.4+1
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
diff --git a/packages/in_app_purchase/in_app_purchase_storekit/test/fakes/fake_storekit_platform.dart b/packages/in_app_purchase/in_app_purchase_storekit/test/fakes/fake_storekit_platform.dart
index e6b9696..dfc715c 100644
--- a/packages/in_app_purchase/in_app_purchase_storekit/test/fakes/fake_storekit_platform.dart
+++ b/packages/in_app_purchase/in_app_purchase_storekit/test/fakes/fake_storekit_platform.dart
@@ -169,14 +169,15 @@
         receiptData = 'refreshed receipt data';
         return Future<void>.sync(() {});
       case '-[InAppPurchasePlugin addPayment:result:]':
-        final String id = call.arguments['productIdentifier'] as String;
-        final int quantity = call.arguments['quantity'] as int;
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
+        final String id = arguments['productIdentifier']! as String;
+        final int quantity = arguments['quantity']! as int;
 
         // Keep the received paymentDiscount parameter when testing payment with discount.
-        if (call.arguments['applicationUsername'] == 'userWithDiscount') {
-          if (call.arguments['paymentDiscount'] != null) {
-            final Map<dynamic, dynamic> discountArgument =
-                call.arguments['paymentDiscount'] as Map<dynamic, dynamic>;
+        if (arguments['applicationUsername']! == 'userWithDiscount') {
+          final Map<dynamic, dynamic>? discountArgument =
+              arguments['paymentDiscount'] as Map<dynamic, dynamic>?;
+          if (discountArgument != null) {
             discountReceived = discountArgument.cast<String, dynamic>();
           } else {
             discountReceived = <String, dynamic>{};
@@ -210,9 +211,10 @@
         }
         break;
       case '-[InAppPurchasePlugin finishTransaction:result:]':
+        final Map<String, Object?> arguments = _getArgumentDictionary(call);
         finishedTransactions.add(createPurchasedTransaction(
-            call.arguments['productIdentifier'] as String,
-            call.arguments['transactionIdentifier'] as String,
+            arguments['productIdentifier']! as String,
+            arguments['transactionIdentifier']! as String,
             quantity: transactions.first.payment.quantity));
         break;
       case '-[SKPaymentQueue startObservingTransactionQueue]':
@@ -224,4 +226,12 @@
     }
     return Future<void>.sync(() {});
   }
+
+  /// Returns the arguments of [call] as typed string-keyed Map.
+  ///
+  /// This does not do any type validation, so is only safe to call if the
+  /// arguments are known to be a map.
+  Map<String, Object?> _getArgumentDictionary(MethodCall call) {
+    return (call.arguments as Map<Object?, Object?>).cast<String, Object?>();
+  }
 }
diff --git a/packages/shared_preferences/shared_preferences_android/test/shared_preferences_android_test.dart b/packages/shared_preferences/shared_preferences_android/test/shared_preferences_android_test.dart
index d9c9213..fb67648 100644
--- a/packages/shared_preferences/shared_preferences_android/test/shared_preferences_android_test.dart
+++ b/packages/shared_preferences/shared_preferences_android/test/shared_preferences_android_test.dart
@@ -33,13 +33,20 @@
     setUp(() async {
       testData = InMemorySharedPreferencesStore.empty();
 
+      Map<String, Object?> getArgumentDictionary(MethodCall call) {
+        return (call.arguments as Map<Object?, Object?>)
+            .cast<String, Object?>();
+      }
+
       channel.setMockMethodCallHandler((MethodCall methodCall) async {
         log.add(methodCall);
         if (methodCall.method == 'getAll') {
           return testData.getAll();
         }
         if (methodCall.method == 'remove') {
-          final String key = methodCall.arguments['key']! as String;
+          final Map<String, Object?> arguments =
+              getArgumentDictionary(methodCall);
+          final String key = arguments['key']! as String;
           return testData.remove(key);
         }
         if (methodCall.method == 'clear') {
@@ -49,8 +56,10 @@
         final Match? match = setterRegExp.matchAsPrefix(methodCall.method);
         if (match?.groupCount == 1) {
           final String valueType = match!.group(1)!;
-          final String key = methodCall.arguments['key'] as String;
-          final Object value = methodCall.arguments['value'] as Object;
+          final Map<String, Object?> arguments =
+              getArgumentDictionary(methodCall);
+          final String key = arguments['key']! as String;
+          final Object value = arguments['value']!;
           return testData.setValue(valueType, key, value);
         }
         fail('Unexpected method call: ${methodCall.method}');
diff --git a/packages/shared_preferences/shared_preferences_platform_interface/test/method_channel_shared_preferences_test.dart b/packages/shared_preferences/shared_preferences_platform_interface/test/method_channel_shared_preferences_test.dart
index ed4ecc7..da333cf 100644
--- a/packages/shared_preferences/shared_preferences_platform_interface/test/method_channel_shared_preferences_test.dart
+++ b/packages/shared_preferences/shared_preferences_platform_interface/test/method_channel_shared_preferences_test.dart
@@ -31,13 +31,20 @@
     setUp(() async {
       testData = InMemorySharedPreferencesStore.empty();
 
+      Map<String, Object?> getArgumentDictionary(MethodCall call) {
+        return (call.arguments as Map<Object?, Object?>)
+            .cast<String, Object?>();
+      }
+
       channel.setMockMethodCallHandler((MethodCall methodCall) async {
         log.add(methodCall);
         if (methodCall.method == 'getAll') {
           return testData.getAll();
         }
         if (methodCall.method == 'remove') {
-          final String key = (methodCall.arguments['key'] as String?)!;
+          final Map<String, Object?> arguments =
+              getArgumentDictionary(methodCall);
+          final String key = arguments['key']! as String;
           return testData.remove(key);
         }
         if (methodCall.method == 'clear') {
@@ -47,8 +54,10 @@
         final Match? match = setterRegExp.matchAsPrefix(methodCall.method);
         if (match?.groupCount == 1) {
           final String valueType = match!.group(1)!;
-          final String key = (methodCall.arguments['key'] as String?)!;
-          final Object value = (methodCall.arguments['value'] as Object?)!;
+          final Map<String, Object?> arguments =
+              getArgumentDictionary(methodCall);
+          final String key = arguments['key']! as String;
+          final Object value = arguments['value']!;
           return testData.setValue(valueType, key, value);
         }
         fail('Unexpected method call: ${methodCall.method}');
diff --git a/packages/url_launcher/url_launcher_android/test/url_launcher_android_test.dart b/packages/url_launcher/url_launcher_android/test/url_launcher_android_test.dart
index eebd8cd..b8ccc2c 100644
--- a/packages/url_launcher/url_launcher_android/test/url_launcher_android_test.dart
+++ b/packages/url_launcher/url_launcher_android/test/url_launcher_android_test.dart
@@ -61,7 +61,8 @@
       const String genericUrl = 'http://flutter.dev';
       channel.setMockMethodCallHandler((MethodCall methodCall) async {
         log.add(methodCall);
-        return methodCall.arguments['url'] != specificUrl;
+        return (methodCall.arguments as Map<Object?, Object?>)['url'] !=
+            specificUrl;
       });
 
       final UrlLauncherAndroid launcher = UrlLauncherAndroid();
@@ -69,7 +70,7 @@
 
       expect(canLaunch, true);
       expect(log.length, 2);
-      expect(log[1].arguments['url'], genericUrl);
+      expect((log[1].arguments as Map<Object?, Object?>)['url'], genericUrl);
     });
 
     test('checks a generic URL if an https URL returns false', () async {
@@ -77,7 +78,8 @@
       const String genericUrl = 'https://flutter.dev';
       channel.setMockMethodCallHandler((MethodCall methodCall) async {
         log.add(methodCall);
-        return methodCall.arguments['url'] != specificUrl;
+        return (methodCall.arguments as Map<Object?, Object?>)['url'] !=
+            specificUrl;
       });
 
       final UrlLauncherAndroid launcher = UrlLauncherAndroid();
@@ -85,7 +87,7 @@
 
       expect(canLaunch, true);
       expect(log.length, 2);
-      expect(log[1].arguments['url'], genericUrl);
+      expect((log[1].arguments as Map<Object?, Object?>)['url'], genericUrl);
     });
 
     test('does not a generic URL if a non-web URL returns false', () async {
diff --git a/packages/webview_flutter/webview_flutter_android/example/integration_test/legacy/webview_flutter_test.dart b/packages/webview_flutter/webview_flutter_android/example/integration_test/legacy/webview_flutter_test.dart
index 57d3399..180175a 100644
--- a/packages/webview_flutter/webview_flutter_android/example/integration_test/legacy/webview_flutter_test.dart
+++ b/packages/webview_flutter/webview_flutter_android/example/integration_test/legacy/webview_flutter_test.dart
@@ -985,6 +985,11 @@
       final Map<String, dynamic> viewportRectRelativeToViewport =
           jsonDecode(viewportRectJSON) as Map<String, dynamic>;
 
+      num getDomRectComponent(
+          Map<String, dynamic> rectAsJson, String component) {
+        return rectAsJson[component]! as num;
+      }
+
       // Check that the input is originally outside of the viewport.
 
       final String initialInputClientRectJSON =
@@ -994,8 +999,9 @@
           jsonDecode(initialInputClientRectJSON) as Map<String, dynamic>;
 
       expect(
-          initialInputClientRectRelativeToViewport['bottom'] <=
-              viewportRectRelativeToViewport['bottom'],
+          getDomRectComponent(
+                  initialInputClientRectRelativeToViewport, 'bottom') <=
+              getDomRectComponent(viewportRectRelativeToViewport, 'bottom'),
           isFalse);
 
       await controller.runJavascript('inputEl.focus()');
@@ -1009,21 +1015,22 @@
           jsonDecode(lastInputClientRectJSON) as Map<String, dynamic>;
 
       expect(
-          lastInputClientRectRelativeToViewport['top'] >=
-              viewportRectRelativeToViewport['top'],
+          getDomRectComponent(lastInputClientRectRelativeToViewport, 'top') >=
+              getDomRectComponent(viewportRectRelativeToViewport, 'top'),
           isTrue);
       expect(
-          lastInputClientRectRelativeToViewport['bottom'] <=
-              viewportRectRelativeToViewport['bottom'],
+          getDomRectComponent(
+                  lastInputClientRectRelativeToViewport, 'bottom') <=
+              getDomRectComponent(viewportRectRelativeToViewport, 'bottom'),
           isTrue);
 
       expect(
-          lastInputClientRectRelativeToViewport['left'] >=
-              viewportRectRelativeToViewport['left'],
+          getDomRectComponent(lastInputClientRectRelativeToViewport, 'left') >=
+              getDomRectComponent(viewportRectRelativeToViewport, 'left'),
           isTrue);
       expect(
-          lastInputClientRectRelativeToViewport['right'] <=
-              viewportRectRelativeToViewport['right'],
+          getDomRectComponent(lastInputClientRectRelativeToViewport, 'right') <=
+              getDomRectComponent(viewportRectRelativeToViewport, 'right'),
           isTrue);
     });
   });
diff --git a/packages/webview_flutter/webview_flutter_android/test/legacy/surface_android_test.dart b/packages/webview_flutter/webview_flutter_android/test/legacy/surface_android_test.dart
index 1657e1b..196e7cc 100644
--- a/packages/webview_flutter/webview_flutter_android/test/legacy/surface_android_test.dart
+++ b/packages/webview_flutter/webview_flutter_android/test/legacy/surface_android_test.dart
@@ -21,9 +21,12 @@
         (MethodCall call) async {
           log.add(call);
           if (call.method == 'resize') {
+            final Map<String, Object?> arguments =
+                (call.arguments as Map<Object?, Object?>)
+                    .cast<String, Object?>();
             return <String, Object?>{
-              'width': call.arguments['width'],
-              'height': call.arguments['height'],
+              'width': arguments['width'],
+              'height': arguments['height'],
             };
           }
         },
diff --git a/packages/webview_flutter/webview_flutter_android/test/legacy/webview_android_widget_test.dart b/packages/webview_flutter/webview_flutter_android/test/legacy/webview_android_widget_test.dart
index 909607a..22c161a 100644
--- a/packages/webview_flutter/webview_flutter_android/test/legacy/webview_android_widget_test.dart
+++ b/packages/webview_flutter/webview_flutter_android/test/legacy/webview_android_widget_test.dart
@@ -210,8 +210,10 @@
           ),
         );
 
-        final List<dynamic> javaScriptChannels =
-            verify(mockWebView.addJavaScriptChannel(captureAny)).captured;
+        final List<android_webview.JavaScriptChannel> javaScriptChannels =
+            verify(mockWebView.addJavaScriptChannel(captureAny))
+                .captured
+                .cast<android_webview.JavaScriptChannel>();
         expect(javaScriptChannels[0].channelName, 'a');
         expect(javaScriptChannels[1].channelName, 'b');
       });
@@ -656,8 +658,10 @@
         await buildWidget(tester);
 
         await testController.addJavascriptChannels(<String>{'c', 'd'});
-        final List<dynamic> javaScriptChannels =
-            verify(mockWebView.addJavaScriptChannel(captureAny)).captured;
+        final List<android_webview.JavaScriptChannel> javaScriptChannels =
+            verify(mockWebView.addJavaScriptChannel(captureAny))
+                .captured
+                .cast<android_webview.JavaScriptChannel>();
         expect(javaScriptChannels[0].channelName, 'c');
         expect(javaScriptChannels[1].channelName, 'd');
       });
@@ -667,8 +671,10 @@
 
         await testController.addJavascriptChannels(<String>{'c', 'd'});
         await testController.removeJavascriptChannels(<String>{'c', 'd'});
-        final List<dynamic> javaScriptChannels =
-            verify(mockWebView.removeJavaScriptChannel(captureAny)).captured;
+        final List<android_webview.JavaScriptChannel> javaScriptChannels =
+            verify(mockWebView.removeJavaScriptChannel(captureAny))
+                .captured
+                .cast<android_webview.JavaScriptChannel>();
         expect(javaScriptChannels[0].channelName, 'c');
         expect(javaScriptChannels[1].channelName, 'd');
       });
diff --git a/packages/webview_flutter/webview_flutter_wkwebview/CHANGELOG.md b/packages/webview_flutter/webview_flutter_wkwebview/CHANGELOG.md
index 7ae38d3..b4ad2a1 100644
--- a/packages/webview_flutter/webview_flutter_wkwebview/CHANGELOG.md
+++ b/packages/webview_flutter/webview_flutter_wkwebview/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 3.0.2
+
+* Updates code for stricter lint checks.
+
 ## 3.0.1
 
 * Adds support for retrieving navigation type with internal class.
diff --git a/packages/webview_flutter/webview_flutter_wkwebview/lib/src/legacy/web_kit_webview_widget.dart b/packages/webview_flutter/webview_flutter_wkwebview/lib/src/legacy/web_kit_webview_widget.dart
index cc901a4..4d10db9 100644
--- a/packages/webview_flutter/webview_flutter_wkwebview/lib/src/legacy/web_kit_webview_widget.dart
+++ b/packages/webview_flutter/webview_flutter_wkwebview/lib/src/legacy/web_kit_webview_widget.dart
@@ -353,9 +353,9 @@
       // unsupported. This also goes for `null` and `undefined` on iOS 14+. For
       // example, when running a void function. For ease of use, this specific
       // error is ignored when no return value is expected.
-      if (exception.details is! NSError ||
-          exception.details.code !=
-              WKErrorCode.javaScriptResultTypeIsUnsupported) {
+      final Object? details = exception.details;
+      if (details is! NSError ||
+          details.code != WKErrorCode.javaScriptResultTypeIsUnsupported) {
         rethrow;
       }
     }
diff --git a/packages/webview_flutter/webview_flutter_wkwebview/lib/src/webkit_webview_controller.dart b/packages/webview_flutter/webview_flutter_wkwebview/lib/src/webkit_webview_controller.dart
index 4821941..dc90906 100644
--- a/packages/webview_flutter/webview_flutter_wkwebview/lib/src/webkit_webview_controller.dart
+++ b/packages/webview_flutter/webview_flutter_wkwebview/lib/src/webkit_webview_controller.dart
@@ -269,9 +269,9 @@
       // unsupported. This also goes for `null` and `undefined` on iOS 14+. For
       // example, when running a void function. For ease of use, this specific
       // error is ignored when no return value is expected.
-      if (exception.details is! NSError ||
-          exception.details.code !=
-              WKErrorCode.javaScriptResultTypeIsUnsupported) {
+      final Object? details = exception.details;
+      if (details is! NSError ||
+          details.code != WKErrorCode.javaScriptResultTypeIsUnsupported) {
         rethrow;
       }
     }
diff --git a/packages/webview_flutter/webview_flutter_wkwebview/pubspec.yaml b/packages/webview_flutter/webview_flutter_wkwebview/pubspec.yaml
index 27a6a78..85440f6 100644
--- a/packages/webview_flutter/webview_flutter_wkwebview/pubspec.yaml
+++ b/packages/webview_flutter/webview_flutter_wkwebview/pubspec.yaml
@@ -2,7 +2,7 @@
 description: A Flutter plugin that provides a WebView widget based on Apple's WKWebView control.
 repository: https://github.com/flutter/plugins/tree/main/packages/webview_flutter/webview_flutter_wkwebview
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+webview%22
-version: 3.0.1
+version: 3.0.2
 
 environment:
   sdk: ">=2.17.0 <3.0.0"
diff --git a/packages/webview_flutter/webview_flutter_wkwebview/test/legacy/web_kit_webview_widget_test.dart b/packages/webview_flutter/webview_flutter_wkwebview/test/legacy/web_kit_webview_widget_test.dart
index da7ce9b..7982be1 100644
--- a/packages/webview_flutter/webview_flutter_wkwebview/test/legacy/web_kit_webview_widget_test.dart
+++ b/packages/webview_flutter/webview_flutter_wkwebview/test/legacy/web_kit_webview_widget_test.dart
@@ -137,13 +137,13 @@
         (WidgetTester tester) async {
       await buildWidget(tester);
 
-      final dynamic onCreateWebView = verify(
-                  mockWebViewWidgetProxy.createUIDelgate(
+      final void Function(WKWebView, WKWebViewConfiguration, WKNavigationAction)
+          onCreateWebView = verify(mockWebViewWidgetProxy.createUIDelgate(
                       onCreateWebView: captureAnyNamed('onCreateWebView')))
-              .captured
-              .single
-          as void Function(
-              WKWebView, WKWebViewConfiguration, WKNavigationAction);
+                  .captured
+                  .single
+              as void Function(
+                  WKWebView, WKWebViewConfiguration, WKNavigationAction);
 
       const NSUrlRequest request = NSUrlRequest(url: 'https://google.com');
       onCreateWebView(
@@ -989,7 +989,7 @@
       testWidgets('onPageStarted', (WidgetTester tester) async {
         await buildWidget(tester);
 
-        final dynamic didStartProvisionalNavigation =
+        final void Function(WKWebView, String) didStartProvisionalNavigation =
             verify(mockWebViewWidgetProxy.createNavigationDelegate(
           didFinishNavigation: anyNamed('didFinishNavigation'),
           didStartProvisionalNavigation:
@@ -1010,7 +1010,7 @@
       testWidgets('onPageFinished', (WidgetTester tester) async {
         await buildWidget(tester);
 
-        final dynamic didFinishNavigation =
+        final void Function(WKWebView, String) didFinishNavigation =
             verify(mockWebViewWidgetProxy.createNavigationDelegate(
           didFinishNavigation: captureAnyNamed('didFinishNavigation'),
           didStartProvisionalNavigation:
@@ -1032,7 +1032,7 @@
           (WidgetTester tester) async {
         await buildWidget(tester);
 
-        final dynamic didFailNavigation =
+        final void Function(WKWebView, NSError) didFailNavigation =
             verify(mockWebViewWidgetProxy.createNavigationDelegate(
           didFinishNavigation: anyNamed('didFinishNavigation'),
           didStartProvisionalNavigation:
@@ -1069,7 +1069,7 @@
           (WidgetTester tester) async {
         await buildWidget(tester);
 
-        final dynamic didFailProvisionalNavigation =
+        final void Function(WKWebView, NSError) didFailProvisionalNavigation =
             verify(mockWebViewWidgetProxy.createNavigationDelegate(
           didFinishNavigation: anyNamed('didFinishNavigation'),
           didStartProvisionalNavigation:
@@ -1110,7 +1110,7 @@
           (WidgetTester tester) async {
         await buildWidget(tester);
 
-        final dynamic webViewWebContentProcessDidTerminate =
+        final void Function(WKWebView) webViewWebContentProcessDidTerminate =
             verify(mockWebViewWidgetProxy.createNavigationDelegate(
           didFinishNavigation: anyNamed('didFinishNavigation'),
           didStartProvisionalNavigation:
@@ -1142,7 +1142,8 @@
           (WidgetTester tester) async {
         await buildWidget(tester, hasNavigationDelegate: true);
 
-        final dynamic decidePolicyForNavigationAction =
+        final Future<WKNavigationActionPolicy> Function(
+                WKWebView, WKNavigationAction) decidePolicyForNavigationAction =
             verify(mockWebViewWidgetProxy.createNavigationDelegate(
           didFinishNavigation: anyNamed('didFinishNavigation'),
           didStartProvisionalNavigation:
@@ -1191,15 +1192,13 @@
           },
         ));
 
-        final dynamic observeValue = verify(
-                mockWebViewWidgetProxy.createWebView(any,
-                    observeValue: captureAnyNamed('observeValue')))
-            .captured
-            .single as void Function(
-          String keyPath,
-          NSObject object,
-          Map<NSKeyValueChangeKey, Object?> change,
-        );
+        final void Function(String, NSObject, Map<NSKeyValueChangeKey, Object?>)
+            observeValue = verify(mockWebViewWidgetProxy.createWebView(any,
+                        observeValue: captureAnyNamed('observeValue')))
+                    .captured
+                    .single
+                as void Function(
+                    String, NSObject, Map<NSKeyValueChangeKey, Object?>);
 
         observeValue(
           'estimatedProgress',
@@ -1234,15 +1233,14 @@
         await buildWidget(tester);
         await testController.addJavascriptChannels(<String>{'hello'});
 
-        final dynamic didReceiveScriptMessage = verify(
-                mockWebViewWidgetProxy.createScriptMessageHandler(
-                    didReceiveScriptMessage:
-                        captureAnyNamed('didReceiveScriptMessage')))
-            .captured
-            .single as void Function(
-          WKUserContentController userContentController,
-          WKScriptMessage message,
-        );
+        final void Function(WKUserContentController, WKScriptMessage)
+            didReceiveScriptMessage = verify(
+                        mockWebViewWidgetProxy.createScriptMessageHandler(
+                            didReceiveScriptMessage:
+                                captureAnyNamed('didReceiveScriptMessage')))
+                    .captured
+                    .single
+                as void Function(WKUserContentController, WKScriptMessage);
 
         didReceiveScriptMessage(
           mockUserContentController,
diff --git a/packages/webview_flutter/webview_flutter_wkwebview/test/src/web_kit/web_kit_test.dart b/packages/webview_flutter/webview_flutter_wkwebview/test/src/web_kit/web_kit_test.dart
index a2b456e..401aebf 100644
--- a/packages/webview_flutter/webview_flutter_wkwebview/test/src/web_kit/web_kit_test.dart
+++ b/packages/webview_flutter/webview_flutter_wkwebview/test/src/web_kit/web_kit_test.dart
@@ -116,13 +116,15 @@
           completion(true),
         );
 
-        final List<WKWebsiteDataTypeEnumData> typeData =
+        final List<dynamic> capturedArgs =
             verify(mockPlatformHostApi.removeDataOfTypes(
           instanceManager.getIdentifier(websiteDataStore),
           captureAny,
           5.0,
-        )).captured.single.cast<WKWebsiteDataTypeEnumData>()
-                as List<WKWebsiteDataTypeEnumData>;
+        )).captured;
+        final List<WKWebsiteDataTypeEnumData> typeData =
+            (capturedArgs.single as List<Object?>)
+                .cast<WKWebsiteDataTypeEnumData>();
 
         expect(typeData.single.value, WKWebsiteDataTypeEnum.cookies);
       });
diff --git a/script/tool/lib/src/common/git_version_finder.dart b/script/tool/lib/src/common/git_version_finder.dart
index b135424..3965ae0 100644
--- a/script/tool/lib/src/common/git_version_finder.dart
+++ b/script/tool/lib/src/common/git_version_finder.dart
@@ -88,7 +88,8 @@
     if (fileContent.trim().isEmpty) {
       return null;
     }
-    final String? versionString = loadYaml(fileContent)['version'] as String?;
+    final YamlMap fileYaml = loadYaml(fileContent) as YamlMap;
+    final String? versionString = fileYaml['version'] as String?;
     return versionString == null ? null : Version.parse(versionString);
   }
 
diff --git a/script/tool/lib/src/common/pub_version_finder.dart b/script/tool/lib/src/common/pub_version_finder.dart
index 572cb91..c24ec42 100644
--- a/script/tool/lib/src/common/pub_version_finder.dart
+++ b/script/tool/lib/src/common/pub_version_finder.dart
@@ -44,11 +44,13 @@
           result: PubVersionFinderResult.fail,
           httpResponse: response);
     }
-    final List<Version> versions =
-        (json.decode(response.body)['versions'] as List<dynamic>)
-            .map<Version>((final dynamic versionString) =>
-                Version.parse(versionString as String))
-            .toList();
+    final Map<Object?, Object?> responseBody =
+        json.decode(response.body) as Map<Object?, Object?>;
+    final List<Version> versions = (responseBody['versions']! as List<Object?>)
+        .cast<String>()
+        .map<Version>(
+            (final String versionString) => Version.parse(versionString))
+        .toList();
 
     return PubVersionFinderResponse(
         versions: versions,
diff --git a/script/tool/lib/src/create_all_packages_app_command.dart b/script/tool/lib/src/create_all_packages_app_command.dart
index 4660413..e7719e9 100644
--- a/script/tool/lib/src/create_all_packages_app_command.dart
+++ b/script/tool/lib/src/create_all_packages_app_command.dart
@@ -244,24 +244,23 @@
 ###''';
   }
 
-  String _pubspecMapString(Map<String, dynamic> values) {
+  String _pubspecMapString(Map<String, Object?> values) {
     final StringBuffer buffer = StringBuffer();
 
-    for (final MapEntry<String, dynamic> entry in values.entries) {
+    for (final MapEntry<String, Object?> entry in values.entries) {
       buffer.writeln();
-      if (entry.value is VersionConstraint) {
-        String value = entry.value.toString();
+      final Object? entryValue = entry.value;
+      if (entryValue is VersionConstraint) {
+        String value = entryValue.toString();
         // Range constraints require quoting.
         if (value.startsWith('>') || value.startsWith('<')) {
           value = "'$value'";
         }
         buffer.write('  ${entry.key}: $value');
-      } else if (entry.value is SdkDependency) {
-        final SdkDependency dep = entry.value as SdkDependency;
-        buffer.write('  ${entry.key}: \n    sdk: ${dep.sdk}');
-      } else if (entry.value is PathDependency) {
-        final PathDependency dep = entry.value as PathDependency;
-        String depPath = dep.path;
+      } else if (entryValue is SdkDependency) {
+        buffer.write('  ${entry.key}: \n    sdk: ${entryValue.sdk}');
+      } else if (entryValue is PathDependency) {
+        String depPath = entryValue.path;
         if (path.style == p.Style.windows) {
           // Posix-style path separators are preferred in pubspec.yaml (and
           // using a consistent format makes unit testing simpler), so convert.
@@ -278,7 +277,7 @@
         buffer.write('  ${entry.key}: \n    path: $depPath');
       } else {
         throw UnimplementedError(
-          'Not available for type: ${entry.value.runtimeType}',
+          'Not available for type: ${entryValue.runtimeType}',
         );
       }
     }
diff --git a/script/tool/lib/src/dependabot_check_command.dart b/script/tool/lib/src/dependabot_check_command.dart
index 5aa762e..77b44e1 100644
--- a/script/tool/lib/src/dependabot_check_command.dart
+++ b/script/tool/lib/src/dependabot_check_command.dart
@@ -58,8 +58,9 @@
     const String typeKey = 'package-ecosystem';
     const String dirKey = 'directory';
     _gradleDirs = entries
-        .where((dynamic entry) => entry[typeKey] == 'gradle')
-        .map((dynamic entry) => (entry as YamlMap)[dirKey] as String)
+        .cast<YamlMap>()
+        .where((YamlMap entry) => entry[typeKey] == 'gradle')
+        .map((YamlMap entry) => entry[dirKey] as String)
         .toSet();
   }
 
diff --git a/script/tool/lib/src/format_command.dart b/script/tool/lib/src/format_command.dart
index 8198f6d..43c450c 100644
--- a/script/tool/lib/src/format_command.dart
+++ b/script/tool/lib/src/format_command.dart
@@ -298,13 +298,13 @@
   Future<List<String>> _whichAll(String command) async {
     try {
       final io.ProcessResult result =
-      await processRunner.run('which', <String>['-a', command]);
+          await processRunner.run('which', <String>['-a', command]);
 
       if (result.exitCode != 0) {
         return <String>[];
       }
 
-      final String stdout = result.stdout.trim() as String;
+      final String stdout = (result.stdout as String).trim();
       if (stdout.isEmpty) {
         return <String>[];
       }
diff --git a/script/tool/lib/src/pubspec_check_command.dart b/script/tool/lib/src/pubspec_check_command.dart
index 79ef1e1..5682ba0 100644
--- a/script/tool/lib/src/pubspec_check_command.dart
+++ b/script/tool/lib/src/pubspec_check_command.dart
@@ -244,8 +244,8 @@
     required RepositoryPackage package,
   }) {
     if (_isImplementationPackage(package)) {
-      final String? implements =
-          pubspec.flutter!['plugin']!['implements'] as String?;
+      final YamlMap pluginSection = pubspec.flutter!['plugin'] as YamlMap;
+      final String? implements = pluginSection['implements'] as String?;
       final String expectedImplements = package.directory.parent.basename;
       if (implements == null) {
         return 'Missing "implements: $expectedImplements" in "plugin" section.';
@@ -265,19 +265,20 @@
     Pubspec pubspec, {
     required RepositoryPackage package,
   }) {
-    final dynamic platformsEntry = pubspec.flutter!['plugin']!['platforms'];
-    if (platformsEntry == null) {
+    final YamlMap pluginSection = pubspec.flutter!['plugin'] as YamlMap;
+    final YamlMap? platforms = pluginSection['platforms'] as YamlMap?;
+    if (platforms == null) {
       logWarning('Does not implement any platforms');
       return null;
     }
-    final YamlMap platforms = platformsEntry as YamlMap;
     final String packageName = package.directory.basename;
 
     // Validate that the default_package entries look correct (e.g., no typos).
     final Set<String> defaultPackages = <String>{};
-    for (final MapEntry<dynamic, dynamic> platformEntry in platforms.entries) {
+    for (final MapEntry<Object?, Object?> platformEntry in platforms.entries) {
+      final YamlMap platformDetails = platformEntry.value! as YamlMap;
       final String? defaultPackage =
-          platformEntry.value['default_package'] as String?;
+          platformDetails['default_package'] as String?;
       if (defaultPackage != null) {
         defaultPackages.add(defaultPackage);
         if (!defaultPackage.startsWith('${packageName}_')) {
diff --git a/script/tool/lib/src/readme_check_command.dart b/script/tool/lib/src/readme_check_command.dart
index e3fbc7b..cbbb8b8 100644
--- a/script/tool/lib/src/readme_check_command.dart
+++ b/script/tool/lib/src/readme_check_command.dart
@@ -234,7 +234,8 @@
     }
 
     // Validate that the supported OS lists match.
-    final dynamic platformsEntry = pubspec.flutter!['plugin']!['platforms'];
+    final YamlMap pluginSection = pubspec.flutter!['plugin'] as YamlMap;
+    final dynamic platformsEntry = pluginSection['platforms'];
     if (platformsEntry == null) {
       logWarning('Plugin not support any platforms');
       return null;
diff --git a/script/tool/test/common/git_version_finder_test.dart b/script/tool/test/common/git_version_finder_test.dart
index d5a5dd4..538b72a 100644
--- a/script/tool/test/common/git_version_finder_test.dart
+++ b/script/tool/test/common/git_version_finder_test.dart
@@ -22,12 +22,14 @@
     gitDir = MockGitDir();
     when(gitDir.runCommand(any, throwOnError: anyNamed('throwOnError')))
         .thenAnswer((Invocation invocation) {
-      gitDirCommands.add(invocation.positionalArguments[0] as List<String>?);
+      final List<String> arguments =
+          invocation.positionalArguments[0]! as List<String>;
+      gitDirCommands.add(arguments);
       final MockProcessResult mockProcessResult = MockProcessResult();
-      if (invocation.positionalArguments[0][0] == 'diff') {
+      if (arguments[0] == 'diff') {
         when<String?>(mockProcessResult.stdout as String?)
             .thenReturn(gitDiffResponse);
-      } else if (invocation.positionalArguments[0][0] == 'merge-base') {
+      } else if (arguments[0] == 'merge-base') {
         when<String?>(mockProcessResult.stdout as String?)
             .thenReturn(mergeBaseResponse);
       }
diff --git a/script/tool/test/common/package_looping_command_test.dart b/script/tool/test/common/package_looping_command_test.dart
index f90d58e..34f346c 100644
--- a/script/tool/test/common/package_looping_command_test.dart
+++ b/script/tool/test/common/package_looping_command_test.dart
@@ -110,8 +110,10 @@
     final MockGitDir gitDir = MockGitDir();
     when(gitDir.runCommand(any, throwOnError: anyNamed('throwOnError')))
         .thenAnswer((Invocation invocation) {
+      final List<String> arguments =
+          invocation.positionalArguments[0]! as List<String>;
       final MockProcessResult mockProcessResult = MockProcessResult();
-      if (invocation.positionalArguments[0][0] == 'diff') {
+      if (arguments[0] == 'diff') {
         when<String?>(mockProcessResult.stdout as String?)
             .thenReturn(gitDiffResponse);
       }