chore: fix some comments (#145397)

fix some comments

dev/integration_tests/android_verified_input/test_driver/main_test.dart

@@ -28,7 +28,7 @@ Future<void> main() async {
     // to be verified.
     final Future<String> inputEventWasVerified = driver.requestData('input_was_verified');
 
-    // Keep issueing taps until we get the requested data. The actual setup
+    // Keep issuing taps until we get the requested data. The actual setup
     // of the platform view is asynchronous so we might have to tap more than
     // once to  get a response.
     bool stop = false;

dev/integration_tests/external_textures/README.md

@@ -24,7 +24,7 @@ subtle translation issues.
 ## How it works
 
 - Each `lib/*_main.dart` file is a Flutter app instrumenting a test case.
-- There is a cooresponding `test_driver/*_test.dart` that runs assertions.
+- There is a corresponding `test_driver/*_test.dart` that runs assertions.
 
 To run the test cases locally, use `flutter drive`[^2]:
 

examples/api/test/widgets/editable_text/text_editing_controller.1_test.dart

@@ -7,7 +7,7 @@ import 'package:flutter_api_samples/widgets/editable_text/text_editing_controlle
 import 'package:flutter_test/flutter_test.dart';
 
 void main() {
-  testWidgets('Initial selection is collasped at offset 0', (WidgetTester tester) async {
+  testWidgets('Initial selection is collapsed at offset 0', (WidgetTester tester) async {
     await tester.pumpWidget(
       const example.TextEditingControllerExampleApp(),
     );

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

@@ -405,7 +405,7 @@ class CupertinoDatePicker extends StatefulWidget {
   /// Defaults to null, which disables background painting entirely.
   final Color? backgroundColor;
 
-  /// Whether to to show day of week alongside day. Defaults to false.
+  /// Whether to show day of week alongside day. Defaults to false.
   final bool showDayOfWeek;
 
   /// {@macro flutter.cupertino.picker.itemExtent}

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

@@ -333,7 +333,7 @@ class DatePickerThemeData with Diagnosticable {
   final MaterialStateProperty<Color?>? rangeSelectionOverlayColor;
 
   /// Overrides the default color used to paint the horizontal divider
-  /// below the header text when dialog is in in portrait orientation
+  /// below the header text when dialog is in portrait orientation
   /// and vertical divider when the dialog is in landscape orientation.
   final Color? dividerColor;
 

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

@@ -35,7 +35,7 @@ enum _RadioType { material, adaptive }
 ///
 /// The [selected] property on this widget is similar to the [ListTile.selected]
 /// property. The [fillColor] in the selected state is used for the selected item's
-/// text color. It it is null, the [activeColor] is used.
+/// text color. If it is null, the [activeColor] is used.
 ///
 /// This widget does not coordinate the [selected] state and the
 /// [checked] state; to have the list tile appear selected when the

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

@@ -271,7 +271,7 @@ class TimePickerThemeData with Diagnosticable {
   /// `RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(4.0)))`.
   final ShapeBorder? shape;
 
-  /// The color of the time selector seperator between the hour and minute controls.
+  /// The color of the time selector separator between the hour and minute controls.
   ///
   /// if this is null, the time picker defaults to the overall theme's
   /// [ColorScheme.onSurface].
@@ -280,7 +280,7 @@ class TimePickerThemeData with Diagnosticable {
   /// [hourMinuteTextColor].
   final MaterialStateProperty<Color?>? timeSelectorSeparatorColor;
 
-  /// Used to configure the text style for the time selector seperator between the hour
+  /// Used to configure the text style for the time selector separator between the hour
   /// and minute controls.
   ///
   /// If this is null, the time picker defaults to the overall theme's

packages/flutter/lib/src/rendering/box.dart

@@ -2074,11 +2074,11 @@ abstract class RenderBox extends RenderObject {
   /// would results in UI changes when [paint] is called, or hit-testing behavior
   /// changes when [hitTest] is called. Moreover, accessing the current layout
   /// of this [RenderBox] or child [RenderBox]es (including accessing [size], or
-  /// `child.size`) usually indicates a bug in the implementaion, as the current
+  /// `child.size`) usually indicates a bug in the implementation, as the current
   /// layout is typically calculated using a set of [BoxConstraints] that's
   /// different from the `constraints` given as the first parameter. To get the
   /// size of this [RenderBox] or a child [RenderBox] in this method's
-  /// implementatin, use the [getDryLayout] method instead.
+  /// implementation, use the [getDryLayout] method instead.
   ///
   /// The implementation must return a value that represents the distance from
   /// the top of the box to the first baseline of the box's contents, for the

packages/flutter/test/widgets/lookup_boundary_test.dart

@@ -173,7 +173,7 @@ void main() {
       expect(tester.state<_DidChangeDependencySpyState>(find.byType(DidChangeDependencySpy)).didChangeDependenciesCount, 3);
     });
 
-    testWidgets('causes didChangeDependencies to be called on move even if dependency was non-existant', (WidgetTester tester) async {
+    testWidgets('causes didChangeDependencies to be called on move even if dependency was non-existent', (WidgetTester tester) async {
       MyInheritedWidget? inheritedWidget;
       final Key globalKey = GlobalKey();
 

packages/flutter_tools/test/general.shard/generate_localizations_test.dart

@@ -2522,10 +2522,10 @@ NumberFormat.decimalPatternDigits(
   testWithoutContext('dollar signs are escaped properly when there is a select clause', () {
     const String dollarSignWithSelect = r'''
 {
-  "dollarSignWithSelect": "$nice_bug\nHello Bug! Manifistation #1 {selectPlaceholder, select, case{message} other{messageOther}}"
+  "dollarSignWithSelect": "$nice_bug\nHello Bug! Manifestation #1 {selectPlaceholder, select, case{message} other{messageOther}}"
 }''';
     setupLocalizations(<String, String>{ 'en': dollarSignWithSelect });
-    expect(getGeneratedFileContent(locale: 'en'), contains(r'\$nice_bug\nHello Bug! Manifistation #1 $_temp0'));
+    expect(getGeneratedFileContent(locale: 'en'), contains(r'\$nice_bug\nHello Bug! Manifestation #1 $_temp0'));
   });
 
   testWithoutContext('can generate method with named parameter', () {

packages/flutter_tools/test/general.shard/ios/xcode_debug_test.dart

@@ -275,13 +275,13 @@ void main() {
               'open',
               <String>[
                 '-a',
-                '/non_existant_path',
+                '/non_existent_path',
                 '-g',
                 '-j',
                 '-F',
                 xcworkspace.path,
               ],
-              'The application /non_existant_path cannot be opened for an unexpected reason',
+              'The application /non_existent_path cannot be opened for an unexpected reason',
             ),
           ),
         ]);
@@ -304,7 +304,7 @@ void main() {
 
         expect(
           logger.errorText,
-          contains('The application /non_existant_path cannot be opened for an unexpected reason'),
+          contains('The application /non_existent_path cannot be opened for an unexpected reason'),
         );
         expect(fakeProcessManager, hasNoRemainingExpectations);
         expect(status, false);
@@ -807,7 +807,7 @@ void main() {
         expect(status, isTrue);
       });
 
-      testWithoutContext('prints error message when deleting temporary directory that is nonexistant', () async {
+      testWithoutContext('prints error message when deleting temporary directory that is nonexistent', () async {
         final Xcode xcode = setupXcode(
           fakeProcessManager: fakeProcessManager,
           fileSystem: fileSystem,
@@ -914,7 +914,7 @@ void main() {
         expect(exitStatus, isTrue);
       });
 
-      testWithoutContext('does not crash when deleting temporary directory that is nonexistant when force exiting', () async {
+      testWithoutContext('does not crash when deleting temporary directory that is nonexistent when force exiting', () async {
         final Xcode xcode = setupXcode(
           fakeProcessManager: FakeProcessManager.any(),
           fileSystem: fileSystem,

packages/flutter_tools/test/general.shard/isolated/macos/native_assets_host_test.dart

@@ -38,7 +38,7 @@ void main() {
     );
   });
 
-  test('framework name name confilicts', () {
+  test('framework name conflicts', () {
     final Set<String> alreadyTakenNames = <String>{};
     expect(
       frameworkUri('libfoo.dylib', alreadyTakenNames),