chore: address warnings of unreachable_switch_default instead of igno…

…ring them

CHANGELOG.md

@@ -10,6 +10,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Address warnings of `unreachable_switch_default` (introduced in Dart 3.6).
+
 ## [11.0.0-dev.15] - 2024-12-13
 
 ### Added

analysis_options.yaml

@@ -1,9 +1,5 @@
 include: package:flutter_lints/flutter.yaml
 
-analyzer:
-# TODO: Included for backward compatibility, remove when the minimum Dart SDK is 3.6.0
-  errors:
-    unreachable_switch_default: ignore
 linter:
   rules:
     always_declare_return_types: true

lib/src/editor/raw_editor/raw_editor_state.dart

@@ -323,11 +323,6 @@ class QuillRawEditorState extends EditorState
       case TargetPlatform.windows:
         widget.config.focusNode.unfocus();
         break;
-      default:
-        throw UnsupportedError(
-          'The platform ${defaultTargetPlatform.name} is not supported in the'
-          ' _defaultOnTapOutside()',
-        );
     }
   }
 

lib/src/editor/widgets/text/text_selection.dart

@@ -317,8 +317,6 @@ class EditorTextSelectionOverlay {
             ? newSelection.extent
             : const TextPosition(offset: 0);
         break;
-      default:
-        throw ArgumentError('Invalid position');
     }
 
     final currSelection = newSelection != null
@@ -456,8 +454,6 @@ class _TextSelectionHandleOverlay extends StatefulWidget {
         return renderObject.selectionStartInViewport;
       case _TextSelectionHandlePosition.end:
         return renderObject.selectionEndInViewport;
-      default:
-        throw ArgumentError('Invalid position');
     }
   }
 }
@@ -547,8 +543,6 @@ class _TextSelectionHandleOverlayState
               isNormalized ? position.offset : widget.selection.extentOffset,
         );
         break;
-      default:
-        throw ArgumentError('Invalid widget.position');
     }
 
     if (newSelection.baseOffset >= newSelection.extentOffset) {