diff --git a/pkg/_fe_analyzer_shared/lib/src/base/errors.dart b/pkg/_fe_analyzer_shared/lib/src/base/errors.dart
index bcaa62b1517..683754d00bc 100644
--- a/pkg/_fe_analyzer_shared/lib/src/base/errors.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/base/errors.dart
@@ -48,7 +48,7 @@ abstract class ErrorCode {
   const ErrorCode({
     String? correctionMessage,
     this.hasPublishedDocs = false,
-    this.isUnresolvedIdentifier: false,
+    this.isUnresolvedIdentifier = false,
     required this.name,
     required String problemMessage,
     required this.uniqueName,
diff --git a/pkg/_fe_analyzer_shared/lib/src/flow_analysis/flow_analysis.dart b/pkg/_fe_analyzer_shared/lib/src/flow_analysis/flow_analysis.dart
index 118c57159f1..830a3798d38 100644
--- a/pkg/_fe_analyzer_shared/lib/src/flow_analysis/flow_analysis.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/flow_analysis/flow_analysis.dart
@@ -1320,7 +1320,7 @@ class FlowAnalysisDebug<Node extends Object, Statement extends Node,
   }
 
   T _wrap<T>(String description, T callback(),
-      {bool isQuery: false, bool? isPure}) {
+      {bool isQuery = false, bool? isPure}) {
     isPure ??= isQuery;
     print(description);
     T result;
diff --git a/pkg/_fe_analyzer_shared/lib/src/messages/codes.dart b/pkg/_fe_analyzer_shared/lib/src/messages/codes.dart
index 202dad861e2..9c283e103e0 100644
--- a/pkg/_fe_analyzer_shared/lib/src/messages/codes.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/messages/codes.dart
@@ -31,7 +31,7 @@ class Code<T> {
   final Severity severity;
 
   const Code(this.name,
-      {this.index: -1, this.analyzerCodes, this.severity: Severity.error});
+      {this.index = -1, this.analyzerCodes, this.severity = Severity.error});
 
   String toString() => name;
 }
diff --git a/pkg/_fe_analyzer_shared/lib/src/parser/identifier_context.dart b/pkg/_fe_analyzer_shared/lib/src/parser/identifier_context.dart
index d539c6c17b4..00689b69b70 100644
--- a/pkg/_fe_analyzer_shared/lib/src/parser/identifier_context.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/parser/identifier_context.dart
@@ -305,14 +305,14 @@ abstract class IdentifierContext {
   final Template<_MessageWithArgument<Token>> recoveryTemplate;
 
   const IdentifierContext(this._name,
-      {this.inDeclaration: false,
-      this.inLibraryOrPartOfDeclaration: false,
-      this.inSymbol: false,
-      this.isContinuation: false,
-      this.isScopeReference: false,
-      this.isBuiltInIdentifierAllowed: true,
+      {this.inDeclaration = false,
+      this.inLibraryOrPartOfDeclaration = false,
+      this.inSymbol = false,
+      this.isContinuation = false,
+      this.isScopeReference = false,
+      this.isBuiltInIdentifierAllowed = true,
       bool? allowedInConstantExpression,
-      this.recoveryTemplate: templateExpectedIdentifier})
+      this.recoveryTemplate = templateExpectedIdentifier})
       : this.allowedInConstantExpression =
             // Generally, declarations are legal in constant expressions.  A
             // continuation doesn't affect constant expressions: if what it's
diff --git a/pkg/_fe_analyzer_shared/lib/src/parser/parser.dart b/pkg/_fe_analyzer_shared/lib/src/parser/parser.dart
index ade0f51373e..bd6c0907b4e 100644
--- a/pkg/_fe_analyzer_shared/lib/src/parser/parser.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/parser/parser.dart
@@ -58,7 +58,7 @@ class ErrorCollectingListener extends Listener {
 }
 
 List<ParserError> parse(Token tokens,
-    {bool useImplicitCreationExpression: true}) {
+    {bool useImplicitCreationExpression = true}) {
   ErrorCollectingListener listener = new ErrorCollectingListener();
   Parser parser = new Parser(listener,
       useImplicitCreationExpression: useImplicitCreationExpression);
diff --git a/pkg/_fe_analyzer_shared/lib/src/parser/parser_impl.dart b/pkg/_fe_analyzer_shared/lib/src/parser/parser_impl.dart
index 5465c811d12..93449e3a92e 100644
--- a/pkg/_fe_analyzer_shared/lib/src/parser/parser_impl.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/parser/parser_impl.dart
@@ -317,7 +317,7 @@ class Parser {
   // implicit create expression without the special casing.
   final bool useImplicitCreationExpression;
 
-  Parser(this.listener, {this.useImplicitCreationExpression: true})
+  Parser(this.listener, {this.useImplicitCreationExpression = true})
       : assert(listener != null); // ignore:unnecessary_null_comparison
 
   bool get inGenerator {
diff --git a/pkg/_fe_analyzer_shared/lib/src/parser/stack_listener.dart b/pkg/_fe_analyzer_shared/lib/src/parser/stack_listener.dart
index f9c5bfc0191..36da5a16269 100644
--- a/pkg/_fe_analyzer_shared/lib/src/parser/stack_listener.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/parser/stack_listener.dart
@@ -523,7 +523,7 @@ abstract class StackListener extends Listener {
   }
 
   void addProblem(Message message, int charOffset, int length,
-      {bool wasHandled: false, List<LocatedMessage> context});
+      {bool wasHandled = false, List<LocatedMessage> context});
 }
 
 abstract class Stack {
diff --git a/pkg/_fe_analyzer_shared/lib/src/scanner/io.dart b/pkg/_fe_analyzer_shared/lib/src/scanner/io.dart
index 066fe881cd5..5a9a9637d26 100644
--- a/pkg/_fe_analyzer_shared/lib/src/scanner/io.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/scanner/io.dart
@@ -23,7 +23,7 @@ List<int> readBytesFromFileSync(Uri uri) {
 }
 
 Future<List<int>> readBytesFromFile(Uri uri,
-    {bool ensureZeroTermination: true}) async {
+    {bool ensureZeroTermination = true}) async {
   RandomAccessFile file = await new File.fromUri(uri).open();
   Uint8List list;
   try {
diff --git a/pkg/_fe_analyzer_shared/lib/src/scanner/scanner.dart b/pkg/_fe_analyzer_shared/lib/src/scanner/scanner.dart
index b9b7cbcfb10..62c5159d517 100644
--- a/pkg/_fe_analyzer_shared/lib/src/scanner/scanner.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/scanner/scanner.dart
@@ -68,7 +68,7 @@ class ScannerResult {
 /// Scan/tokenize the given UTF8 [bytes].
 ScannerResult scan(List<int> bytes,
     {ScannerConfiguration? configuration,
-    bool includeComments: false,
+    bool includeComments = false,
     LanguageVersionChanged? languageVersionChanged}) {
   if (bytes.last != 0) {
     throw new ArgumentError("[bytes]: the last byte must be 0.");
@@ -83,7 +83,7 @@ ScannerResult scan(List<int> bytes,
 /// Scan/tokenize the given [source].
 ScannerResult scanString(String source,
     {ScannerConfiguration? configuration,
-    bool includeComments: false,
+    bool includeComments = false,
     LanguageVersionChanged? languageVersionChanged}) {
   // ignore: unnecessary_null_comparison
   assert(source != null, 'source must not be null');
diff --git a/pkg/_fe_analyzer_shared/lib/src/scanner/scanner_main.dart b/pkg/_fe_analyzer_shared/lib/src/scanner/scanner_main.dart
index 18c7c7e6f74..2d844f7e0bd 100644
--- a/pkg/_fe_analyzer_shared/lib/src/scanner/scanner_main.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/scanner/scanner_main.dart
@@ -8,7 +8,8 @@ import 'io.dart' show readBytesFromFileSync;
 
 import 'scanner.dart' show ErrorToken, Token, scan;
 
-scanAll(Map<Uri, List<int>> files, {bool verbose: false, bool verify: false}) {
+scanAll(Map<Uri, List<int>> files,
+    {bool verbose = false, bool verify = false}) {
   Stopwatch sw = new Stopwatch()..start();
   int byteCount = 0;
   files.forEach((Uri uri, List<int> bytes) {
diff --git a/pkg/_fe_analyzer_shared/lib/src/scanner/string_scanner.dart b/pkg/_fe_analyzer_shared/lib/src/scanner/string_scanner.dart
index 96f953f1d47..c485d1bc3aa 100644
--- a/pkg/_fe_analyzer_shared/lib/src/scanner/string_scanner.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/scanner/string_scanner.dart
@@ -39,7 +39,7 @@ class StringScanner extends AbstractScanner {
 
   StringScanner(String string,
       {ScannerConfiguration? configuration,
-      bool includeComments: false,
+      bool includeComments = false,
       LanguageVersionChanged? languageVersionChanged})
       : string = ensureZeroTermination(string),
         super(configuration, includeComments, languageVersionChanged);
diff --git a/pkg/_fe_analyzer_shared/lib/src/scanner/token.dart b/pkg/_fe_analyzer_shared/lib/src/scanner/token.dart
index 0bbb2546695..bc3fe895337 100644
--- a/pkg/_fe_analyzer_shared/lib/src/scanner/token.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/scanner/token.dart
@@ -415,9 +415,9 @@ class Keyword extends TokenType {
    * Initialize a newly created keyword.
    */
   const Keyword(int index, String lexeme, String name, this.keywordStyle,
-      {bool isModifier: false,
-      bool isTopLevelKeyword: false,
-      int precedence: NO_PRECEDENCE})
+      {bool isModifier = false,
+      bool isTopLevelKeyword = false,
+      int precedence = NO_PRECEDENCE})
       : super(index, lexeme, name, precedence, KEYWORD_TOKEN,
             isModifier: isModifier, isTopLevelKeyword: isTopLevelKeyword);
 
@@ -1684,12 +1684,12 @@ class TokenType {
   const TokenType(
       this.index, this.lexeme, this.name, this.precedence, this.kind,
       {this.binaryOperatorOfCompoundAssignment,
-      this.isBinaryOperator: false,
-      this.isModifier: false,
-      this.isOperator: false,
-      this.isTopLevelKeyword: false,
-      this.isUserDefinableOperator: false,
-      String? stringValue: 'unspecified'})
+      this.isBinaryOperator = false,
+      this.isModifier = false,
+      this.isOperator = false,
+      this.isTopLevelKeyword = false,
+      this.isUserDefinableOperator = false,
+      String? stringValue = 'unspecified'})
       : this.stringValue = stringValue == 'unspecified' ? lexeme : stringValue;
 
   /**
diff --git a/pkg/_fe_analyzer_shared/lib/src/scanner/token_impl.dart b/pkg/_fe_analyzer_shared/lib/src/scanner/token_impl.dart
index 4c869ba3c2a..8f9b505719a 100644
--- a/pkg/_fe_analyzer_shared/lib/src/scanner/token_impl.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/scanner/token_impl.dart
@@ -40,7 +40,7 @@ class StringTokenImpl extends SimpleToken implements StringToken {
    * is canonicalized before the token is created.
    */
   StringTokenImpl.fromString(TokenType type, String value, int charOffset,
-      {bool canonicalize: false, CommentToken? precedingComments})
+      {bool canonicalize = false, CommentToken? precedingComments})
       : valueOrLazySubstring =
             canonicalize ? canonicalizedString(value) : value,
         super(type, charOffset, precedingComments);
@@ -51,7 +51,7 @@ class StringTokenImpl extends SimpleToken implements StringToken {
    */
   StringTokenImpl.fromSubstring(
       TokenType type, String data, int start, int end, int charOffset,
-      {bool canonicalize: false, CommentToken? precedingComments})
+      {bool canonicalize = false, CommentToken? precedingComments})
       : super(type, charOffset, precedingComments) {
     int length = end - start;
     if (length <= LAZY_THRESHOLD) {
@@ -166,7 +166,7 @@ class LanguageVersionTokenImpl extends CommentTokenImpl
 
   LanguageVersionTokenImpl.fromSubstring(
       String string, int start, int end, int tokenStart, this.major, this.minor,
-      {bool canonicalize: false})
+      {bool canonicalize = false})
       : super.fromSubstring(
             TokenType.SINGLE_LINE_COMMENT, string, start, end, tokenStart,
             canonicalize: canonicalize);
diff --git a/pkg/_fe_analyzer_shared/lib/src/scanner/utf8_bytes_scanner.dart b/pkg/_fe_analyzer_shared/lib/src/scanner/utf8_bytes_scanner.dart
index a0fd026bfa6..c734c8861be 100644
--- a/pkg/_fe_analyzer_shared/lib/src/scanner/utf8_bytes_scanner.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/scanner/utf8_bytes_scanner.dart
@@ -89,7 +89,7 @@ class Utf8BytesScanner extends AbstractScanner {
    */
   Utf8BytesScanner(this.bytes,
       {ScannerConfiguration? configuration,
-      bool includeComments: false,
+      bool includeComments = false,
       LanguageVersionChanged? languageVersionChanged})
       : super(configuration, includeComments, languageVersionChanged,
             numberOfBytesHint: bytes.length) {
diff --git a/pkg/_fe_analyzer_shared/lib/src/testing/features.dart b/pkg/_fe_analyzer_shared/lib/src/testing/features.dart
index 113d1d86958..34f508b89c0 100644
--- a/pkg/_fe_analyzer_shared/lib/src/testing/features.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/testing/features.dart
@@ -30,7 +30,7 @@ class Features {
 
   /// Mark the feature [key] as existing. If [value] is provided, the feature
   /// [key] is set to have this value.
-  void add(String key, {var value: ''}) {
+  void add(String key, {var value = ''}) {
     _features[key] = value.toString();
   }
 
diff --git a/pkg/_fe_analyzer_shared/lib/src/testing/id.dart b/pkg/_fe_analyzer_shared/lib/src/testing/id.dart
index e1596e1f0ae..8d9db1afc7e 100644
--- a/pkg/_fe_analyzer_shared/lib/src/testing/id.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/testing/id.dart
@@ -125,8 +125,8 @@ class IdValue {
   static const String errorPrefix = "error: ";
 
   static IdValue decode(Uri sourceUri, Annotation annotation, String text,
-      {bool preserveWhitespaceInAnnotations: false,
-      bool preserveInfixWhitespace: false}) {
+      {bool preserveWhitespaceInAnnotations = false,
+      bool preserveInfixWhitespace = false}) {
     int offset = annotation.offset;
     Id id;
     String expected;
@@ -203,7 +203,7 @@ class MemberId implements Id {
   @override
   final bool isGlobal;
 
-  factory MemberId(String text, {bool isGlobal: false}) {
+  factory MemberId(String text, {bool isGlobal = false}) {
     int dotPos = text.indexOf('.');
     if (dotPos != -1) {
       return new MemberId.internal(text.substring(dotPos + 1),
@@ -213,7 +213,7 @@ class MemberId implements Id {
     }
   }
 
-  MemberId.internal(this.memberName, {this.className, this.isGlobal: false});
+  MemberId.internal(this.memberName, {this.className, this.isGlobal = false});
 
   @override
   int get hashCode => className.hashCode * 13 + memberName.hashCode * 17;
@@ -243,7 +243,7 @@ class ClassId implements Id {
   @override
   final bool isGlobal;
 
-  ClassId(this.className, {this.isGlobal: false});
+  ClassId(this.className, {this.isGlobal = false});
 
   @override
   int get hashCode => className.hashCode * 13;
diff --git a/pkg/_fe_analyzer_shared/lib/src/testing/id_generation.dart b/pkg/_fe_analyzer_shared/lib/src/testing/id_generation.dart
index a1bbadbcd5b..1be8ff91321 100644
--- a/pkg/_fe_analyzer_shared/lib/src/testing/id_generation.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/testing/id_generation.dart
@@ -13,7 +13,7 @@ Map<Uri, List<Annotation>> computeAnnotationsPerUri<T>(
     Map<String, Map<Uri, Map<Id, ActualData<T>>>> actualData,
     DataInterpreter<T> dataInterpreter,
     {Annotation? Function(Annotation? expected, Annotation? actual)? createDiff,
-    bool forceUpdate: false}) {
+    bool forceUpdate = false}) {
   Set<Uri> uriSet = {};
   Set<String> actualMarkers = actualData.keys.toSet();
   Map<Uri, Map<Id, Map<String, IdValue>>> idValuePerUri = {};
@@ -69,8 +69,8 @@ Map<Uri, List<Annotation>> computeAnnotationsPerUri<T>(
     if (code != null) {
       // Annotations are not computed from synthesized code.
       result[uri] = _computeAnnotations(code, expectedMaps.keys, actualMarkers,
-        idValuePerId, actualDataPerId, dataInterpreter,
-        sortMarkers: false, createDiff: createDiff, forceUpdate: forceUpdate);
+          idValuePerId, actualDataPerId, dataInterpreter,
+          sortMarkers: false, createDiff: createDiff, forceUpdate: forceUpdate);
     }
   }
   return result;
@@ -83,11 +83,11 @@ List<Annotation> _computeAnnotations<T>(
     Map<Id, Map<String, IdValue>> idValuePerId,
     Map<Id, Map<String, ActualData<T>>> actualDataPerId,
     DataInterpreter<T> dataInterpreter,
-    {String defaultPrefix: '/*',
-    String defaultSuffix: '*/',
-    bool sortMarkers: true,
+    {String defaultPrefix = '/*',
+    String defaultSuffix = '*/',
+    bool sortMarkers = true,
     Annotation? Function(Annotation? expected, Annotation? actual)? createDiff,
-    bool forceUpdate: false}) {
+    bool forceUpdate = false}) {
   // ignore: unnecessary_null_comparison
   assert(annotatedCode != null);
 
@@ -156,7 +156,9 @@ List<Annotation> _computeAnnotations<T>(
         suffix);
   }
 
-  Set<Id> idSet = {}..addAll(idValuePerId.keys)..addAll(actualDataPerId.keys);
+  Set<Id> idSet = {}
+    ..addAll(idValuePerId.keys)
+    ..addAll(actualDataPerId.keys);
   List<Annotation> result = <Annotation>[];
   for (Id id in idSet) {
     Map<String, IdValue> idValuePerMarker = idValuePerId[id] ?? {};
diff --git a/pkg/_fe_analyzer_shared/lib/src/testing/id_testing.dart b/pkg/_fe_analyzer_shared/lib/src/testing/id_testing.dart
index 04fe99d02e5..e34d83059fb 100644
--- a/pkg/_fe_analyzer_shared/lib/src/testing/id_testing.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/testing/id_testing.dart
@@ -218,8 +218,8 @@ class MemberAnnotations<DataType> {
 void computeExpectedMap(Uri sourceUri, String filename, AnnotatedCode code,
     Map<String, MemberAnnotations<IdValue>> maps,
     {required void onFailure(String message),
-    bool preserveWhitespaceInAnnotations: false,
-    bool preserveInfixWhitespaceInAnnotations: false}) {
+    bool preserveWhitespaceInAnnotations = false,
+    bool preserveInfixWhitespaceInAnnotations = false}) {
   List<String> mapKeys = maps.keys.toList();
   Map<String, AnnotatedCode> split = splitByPrefixes(code, mapKeys);
 
@@ -263,8 +263,8 @@ TestData computeTestData(FileSystemEntity testFile,
     {required Iterable<String> supportedMarkers,
     required Uri createTestUri(Uri uri, String fileName),
     required void onFailure(String message),
-    bool preserveWhitespaceInAnnotations: false,
-    bool preserveInfixWhitespaceInAnnotations: false}) {
+    bool preserveWhitespaceInAnnotations = false,
+    bool preserveInfixWhitespaceInAnnotations = false}) {
   Uri? entryPoint;
 
   String testName;
@@ -406,7 +406,7 @@ abstract class CompiledData<T> {
 
   Map<int, List<String>> computeDiffAnnotationsAgainst(
       Map<Id, ActualData<T>> thisMap, Map<Id, ActualData<T>> otherMap, Uri uri,
-      {bool includeMatches: false}) {
+      {bool includeMatches = false}) {
     Map<int, List<String>> annotations = <int, List<String>>{};
     thisMap.forEach((Id id, ActualData<T> thisData) {
       ActualData<T>? otherData = otherMap[id];
@@ -436,7 +436,8 @@ abstract class CompiledData<T> {
 
   int getOffsetFromId(Id id, Uri uri);
 
-  void reportError(Uri uri, int offset, String message, {bool succinct: false});
+  void reportError(Uri uri, int offset, String message,
+      {bool succinct = false});
 }
 
 /// Interface used for interpreting annotations.
@@ -513,8 +514,8 @@ Future<TestResult<T>> checkCode<T>(
     CompiledData<T> compiledData,
     DataInterpreter<T> dataInterpreter,
     {bool filterActualData(IdValue? expected, ActualData<T> actualData)?,
-    bool fatalErrors: true,
-    bool succinct: false,
+    bool fatalErrors = true,
+    bool succinct = false,
     required void onFailure(String message)}) async {
   String testName = testData.name;
   Map<Uri, AnnotatedCode> code = testData.code;
@@ -703,7 +704,7 @@ class MarkerOptions {
   MarkerOptions.internal(this.markers);
 
   factory MarkerOptions.fromDataDir(Directory dataDir,
-      {bool shouldFindScript: true}) {
+      {bool shouldFindScript = true}) {
     File file = new File.fromUri(dataDir.uri.resolve('marker.options'));
     File script = new File.fromUri(Platform.script);
     if (!file.existsSync()) {
@@ -810,17 +811,17 @@ const List<Option> idTestOptions = [
 
 /// Check code for all tests in [dataDir] using [runTest].
 Future<void> runTests<T>(Directory dataDir,
-    {List<String> args: const <String>[],
-    int shards: 1,
-    int shardIndex: 0,
+    {List<String> args = const <String>[],
+    int shards = 1,
+    int shardIndex = 0,
     void onTest(Uri uri)?,
     required Uri createUriForFileName(String fileName),
     required void onFailure(String message),
     required RunTestFunction<T> runTest,
     List<String>? skipList,
     Map<String, List<String>>? skipMap,
-    bool preserveWhitespaceInAnnotations: false,
-    bool preserveInfixWhitespaceInAnnotations: false}) async {
+    bool preserveWhitespaceInAnnotations = false,
+    bool preserveInfixWhitespaceInAnnotations = false}) async {
   ParsedOptions parsedOptions = ParsedOptions.parse(args, idTestOptions);
   MarkerOptions markerOptions =
       new MarkerOptions.fromDataDir(dataDir, shouldFindScript: shards == 1);
diff --git a/pkg/_fe_analyzer_shared/lib/src/type_inference/assigned_variables.dart b/pkg/_fe_analyzer_shared/lib/src/type_inference/assigned_variables.dart
index 8bc80f199e0..461a92ddef5 100644
--- a/pkg/_fe_analyzer_shared/lib/src/type_inference/assigned_variables.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/type_inference/assigned_variables.dart
@@ -96,7 +96,7 @@ class AssignedVariables<Node extends Object, Variable extends Object> {
   ///
   /// See [beginNode] for more details.
   AssignedVariablesNodeInfo deferNode(
-      {bool isClosureOrLateVariableInitializer: false}) {
+      {bool isClosureOrLateVariableInitializer = false}) {
     assert(!_isFinished);
     AssignedVariablesNodeInfo info = _stack.removeLast();
     info.read.removeAll(info.declared);
@@ -153,7 +153,7 @@ class AssignedVariables<Node extends Object, Variable extends Object> {
   /// to [storeInfo].
   ///
   /// See [beginNode] for more details.
-  void endNode(Node node, {bool isClosureOrLateVariableInitializer: false}) {
+  void endNode(Node node, {bool isClosureOrLateVariableInitializer = false}) {
     assert(!_isFinished);
     storeInfo(
         node,
diff --git a/pkg/_fe_analyzer_shared/lib/src/util/libraries_specification.dart b/pkg/_fe_analyzer_shared/lib/src/util/libraries_specification.dart
index a25f8e88fb9..7b8cba0b716 100644
--- a/pkg/_fe_analyzer_shared/lib/src/util/libraries_specification.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/util/libraries_specification.dart
@@ -378,7 +378,7 @@ class LibraryInfo {
   final bool isSupported;
 
   const LibraryInfo(this.name, this.uri, this.patches,
-      {this.isSupported: true});
+      {this.isSupported = true});
 
   /// The import uri for the defined library.
   Uri get importUri => Uri.parse('dart:${name}');
diff --git a/pkg/_fe_analyzer_shared/lib/src/util/link.dart b/pkg/_fe_analyzer_shared/lib/src/util/link.dart
index cfbe99fef75..b1a1cb2a184 100644
--- a/pkg/_fe_analyzer_shared/lib/src/util/link.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/util/link.dart
@@ -21,7 +21,7 @@ class Link<T> implements Iterable<T> {
 
   void printOn(StringBuffer buffer, [separatedBy]) {}
 
-  List<T> toList({bool growable: true}) {
+  List<T> toList({bool growable = true}) {
     List<T> result = <T>[];
     for (Link<T> link = this; !link.isEmpty; link = link.tail!) {
       result.add(link.head);
@@ -37,7 +37,7 @@ class Link<T> implements Iterable<T> {
   /// Invokes `fn` for every item in the linked list and returns the results
   /// in a [List].
   /// TODO(scheglov) Rewrite to `List<E>`, or remove.
-  List<E?> mapToList<E>(E fn(T item), {bool growable: true}) {
+  List<E?> mapToList<E>(E fn(T item), {bool growable = true}) {
     List<E?> result;
     if (!growable) {
       result = new List<E?>.filled(slowLength(), null);
diff --git a/pkg/_fe_analyzer_shared/lib/src/util/options.dart b/pkg/_fe_analyzer_shared/lib/src/util/options.dart
index 59a844205a3..e912844f7d5 100644
--- a/pkg/_fe_analyzer_shared/lib/src/util/options.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/util/options.dart
@@ -303,7 +303,7 @@ class Option<T> {
   final List<String> aliases;
 
   const Option(this.flag, this.spec,
-      {this.isDefines: false, this.aliases: const []});
+      {this.isDefines = false, this.aliases = const []});
 
   T read(ParsedOptions parsedOptions) =>
       (isDefines ? parsedOptions.defines : parsedOptions.options[flag]) as T;
diff --git a/pkg/_fe_analyzer_shared/test/id_generation_test.dart b/pkg/_fe_analyzer_shared/test/id_generation_test.dart
index 56abad3c037..6297ffedc07 100644
--- a/pkg/_fe_analyzer_shared/test/id_generation_test.dart
+++ b/pkg/_fe_analyzer_shared/test/id_generation_test.dart
@@ -466,10 +466,10 @@ some more code
 
 void testString(
   String text, {
-  Map<String, Map<Id, String>> actualData: const {},
+  Map<String, Map<Id, String>> actualData = const {},
   String? expectedResult,
-  int classOffset: 0,
-  int memberOffset: 0,
+  int classOffset = 0,
+  int memberOffset = 0,
 }) {
   testGeneral(const StringDataInterpreter(), text,
       actualData: actualData,
@@ -486,10 +486,10 @@ void testString(
 
 void testFeatures(
   String text, {
-  Map<String, Map<Id, String>> actualData: const {},
+  Map<String, Map<Id, String>> actualData = const {},
   String? expectedResult,
-  int classOffset: 0,
-  int memberOffset: 0,
+  int classOffset = 0,
+  int memberOffset = 0,
 }) {
   Map<String, Map<Id, Features>> actualFeatures = {};
   actualData.forEach((String marker, Map<Id, String> data) {
@@ -506,10 +506,10 @@ void testFeatures(
 }
 
 void testGeneral<T>(DataInterpreter<T> dataInterpreter, String text,
-    {Map<String, Map<Id, T>> actualData: const {},
+    {Map<String, Map<Id, T>> actualData = const {},
     String? expectedResult,
-    int classOffset: 0,
-    int memberOffset: 0}) {
+    int classOffset = 0,
+    int memberOffset = 0}) {
   expectedResult ??= text;
   AnnotatedCode code =
       new AnnotatedCode.fromText(text, commentStart, commentEnd);
diff --git a/pkg/_fe_analyzer_shared/test/inheritance/data/members_from_opt_in/main.dart b/pkg/_fe_analyzer_shared/test/inheritance/data/members_from_opt_in/main.dart
index 2c891f35b79..9fe23d6f409 100644
--- a/pkg/_fe_analyzer_shared/test/inheritance/data/members_from_opt_in/main.dart
+++ b/pkg/_fe_analyzer_shared/test/inheritance/data/members_from_opt_in/main.dart
@@ -46,10 +46,10 @@ class LegacyClass extends Class implements Interface {
   /*member: LegacyClass.method7b:int* Function({int* a, int* b})**/
 
   /*member: LegacyClass.method8a:int* Function(int*, {int* b})**/
-  int method8a(int a, {int b: 0}) => 0;
+  int method8a(int a, {int b = 0}) => 0;
 
   /*member: LegacyClass.method8b:int* Function({int* a, int* b})**/
-  int method8b({int a, int b: 0}) => 0;
+  int method8b({int a, int b = 0}) => 0;
 
   /*member: LegacyClass.method9a:int* Function(int*, {int* b})**/
   /*member: LegacyClass.method9b:int* Function({int* a, int* b})**/
diff --git a/pkg/_fe_analyzer_shared/test/inheritance/data/members_from_opt_in/opt_in.dart b/pkg/_fe_analyzer_shared/test/inheritance/data/members_from_opt_in/opt_in.dart
index a885acb0501..0aa9e7e79ed 100644
--- a/pkg/_fe_analyzer_shared/test/inheritance/data/members_from_opt_in/opt_in.dart
+++ b/pkg/_fe_analyzer_shared/test/inheritance/data/members_from_opt_in/opt_in.dart
@@ -40,13 +40,13 @@ abstract class Interface {
   int method7a(int a, {int? b});
 
   /*member: Interface.method7b:int Function({int a, int? b})*/
-  int method7b({int a: 0, int? b});
+  int method7b({int a = 0, int? b});
 
   /*member: Interface.method8a:int? Function(int?, {int b})*/
-  int? method8a(int? a, {int b: 0});
+  int? method8a(int? a, {int b = 0});
 
   /*member: Interface.method8b:int? Function({int? a, int b})*/
-  int? method8b({int? a, int b: 0});
+  int? method8b({int? a, int b = 0});
 
   /*member: Interface.method9a:int Function(int, {required int? b})*/
   int method9a(int a, {required int? b});
@@ -170,7 +170,7 @@ class Class {
   int method7a(int a, {int? b}) => 0;
 
   /*member: Class.method7b:int Function({int a, int? b})*/
-  int method7b({int a: 0, int? b}) => 0;
+  int method7b({int a = 0, int? b}) => 0;
 
   /*member: Class.method9a:int Function(int, {required int? b})*/
   int method9a(int a, {required int? b}) => 0;
diff --git a/pkg/_fe_analyzer_shared/test/inheritance/data/members_from_opt_out/main.dart b/pkg/_fe_analyzer_shared/test/inheritance/data/members_from_opt_out/main.dart
index fdf681bf2c8..84b5f3df680 100644
--- a/pkg/_fe_analyzer_shared/test/inheritance/data/members_from_opt_out/main.dart
+++ b/pkg/_fe_analyzer_shared/test/inheritance/data/members_from_opt_out/main.dart
@@ -34,10 +34,10 @@ abstract class Interface {
   int? method4c([int? a, int? b]);
 
   /*member: Interface.method5a:int Function(int, {int b})*/
-  int method5a(int a, {int b: 0});
+  int method5a(int a, {int b = 0});
 
   /*member: Interface.method5b:int Function({int a, int b})*/
-  int method5b({int a: 0, int b: 0});
+  int method5b({int a = 0, int b = 0});
 
   /*member: Interface.method6a:int? Function(int?, {int? b})*/
   int? method6a(int? a, {int? b});
@@ -266,10 +266,10 @@ class Class2b extends LegacyClass implements Interface {
   int? method4c([int? a, int? b]) => 0;
 
   /*member: Class2b.method5a:int Function(int, {int b})*/
-  int method5a(int a, {int b: 0}) => 0;
+  int method5a(int a, {int b = 0}) => 0;
 
   /*member: Class2b.method5b:int Function({int a, int b})*/
-  int method5b({int a: 0, int b: 0}) => 0;
+  int method5b({int a = 0, int b = 0}) => 0;
 
   /*member: Class2b.method6a:int? Function(int?, {int? b})*/
   int? method6a(int? a, {int? b}) => 0;
diff --git a/pkg/_fe_analyzer_shared/test/macros/api/api_test_expectations.dart b/pkg/_fe_analyzer_shared/test/macros/api/api_test_expectations.dart
index a5c63c31290..8e32c3695a8 100644
--- a/pkg/_fe_analyzer_shared/test/macros/api/api_test_expectations.dart
+++ b/pkg/_fe_analyzer_shared/test/macros/api/api_test_expectations.dart
@@ -7,18 +7,20 @@ import 'package:_fe_analyzer_shared/src/macros/api.dart';
 const Map<String, ClassData> expectedClassData = {
   'Class1': ClassData(fieldsOf: ['field1'], constructorsOf: ['']),
   'Class2': ClassData(isAbstract: true, superclass: 'Object'),
-  'Class3':
-      ClassData(superclass: 'Class2', superSuperclass: 'Object', interfaces: [
-    'Interface1'
-  ],
-          // TODO(johnniwinther): Should we require a specific order?
-          fieldsOf: [
+  'Class3': ClassData(
+      superclass: 'Class2',
+      superSuperclass: 'Object',
+      interfaces: [
+        'Interface1'
+      ],
+      // TODO(johnniwinther): Should we require a specific order?
+      fieldsOf: [
         'field1',
         'field2',
         'staticField1',
       ],
-          // TODO(johnniwinther): Should we require a specific order?
-          methodsOf: [
+      // TODO(johnniwinther): Should we require a specific order?
+      methodsOf: [
         'method1',
         'method2',
         'getter1',
@@ -27,8 +29,8 @@ const Map<String, ClassData> expectedClassData = {
         'setter1',
         'property1',
       ],
-          // TODO(johnniwinther): Should we require a specific order?
-          constructorsOf: [
+      // TODO(johnniwinther): Should we require a specific order?
+      constructorsOf: [
         // TODO(johnniwinther): Should we normalize no-name constructor names?
         '',
         'named',
@@ -230,7 +232,7 @@ Future<void> checkIdentifierResolver(
   Uri dartCore = Uri.parse('dart:core');
   Uri macroApiData = Uri.parse('package:macro_api_test/api_test_data.dart');
 
-  Future<void> check(Uri uri, String name, {bool expectThrows: false}) async {
+  Future<void> check(Uri uri, String name, {bool expectThrows = false}) async {
     if (expectThrows) {
       await throws(() async {
         await identifierResolver.resolveIdentifier(uri, name);
@@ -260,7 +262,7 @@ Future<void> checkTypeDeclarationResolver(
     TypeDeclarationResolver typeDeclarationResolver,
     Map<Identifier, String?> test) async {
   Future<void> check(Identifier identifier, String name,
-      {bool expectThrows: false}) async {
+      {bool expectThrows = false}) async {
     if (expectThrows) {
       await throws(() async {
         await typeDeclarationResolver.declarationOf(identifier);
@@ -293,15 +295,15 @@ class ClassData {
   final List<String> constructorsOf;
 
   const ClassData(
-      {this.isAbstract: false,
-      this.isExternal: false,
+      {this.isAbstract = false,
+      this.isExternal = false,
       this.superclass,
       this.superSuperclass,
-      this.interfaces: const [],
-      this.mixins: const [],
-      this.fieldsOf: const [],
-      this.methodsOf: const [],
-      this.constructorsOf: const []});
+      this.interfaces = const [],
+      this.mixins = const [],
+      this.fieldsOf = const [],
+      this.methodsOf = const [],
+      this.constructorsOf = const []});
 }
 
 class FunctionData {
@@ -315,27 +317,27 @@ class FunctionData {
   final List<ParameterData> namedParameters;
 
   const FunctionData(
-      {this.isAbstract: false,
-      this.isExternal: false,
-      this.isOperator: false,
-      this.isGetter: false,
-      this.isSetter: false,
+      {this.isAbstract = false,
+      this.isExternal = false,
+      this.isOperator = false,
+      this.isGetter = false,
+      this.isSetter = false,
       required this.returnType,
-      this.positionalParameters: const [],
-      this.namedParameters: const []});
+      this.positionalParameters = const [],
+      this.namedParameters = const []});
 }
 
 class TypeData {
   final bool isNullable;
 
-  const TypeData({this.isNullable: false});
+  const TypeData({this.isNullable = false});
 }
 
 class NamedTypeData extends TypeData {
   final String? name;
   final List<TypeData>? typeArguments;
 
-  const NamedTypeData({bool isNullable: false, this.name, this.typeArguments})
+  const NamedTypeData({bool isNullable = false, this.name, this.typeArguments})
       : super(isNullable: isNullable);
 }
 
@@ -346,5 +348,5 @@ class ParameterData {
   final bool isNamed;
 
   const ParameterData(this.name,
-      {required this.type, this.isNamed: false, this.isRequired: false});
+      {required this.type, this.isNamed = false, this.isRequired = false});
 }
diff --git a/pkg/_fe_analyzer_shared/tool/smoke_test_quick.dart b/pkg/_fe_analyzer_shared/tool/smoke_test_quick.dart
index c5cc34f97b1..b6db8372375 100644
--- a/pkg/_fe_analyzer_shared/tool/smoke_test_quick.dart
+++ b/pkg/_fe_analyzer_shared/tool/smoke_test_quick.dart
@@ -24,7 +24,7 @@ main(List<String> args) async {
 }
 
 Future<void> run(String script, List<String> scriptArguments,
-    {bool filter: true}) async {
+    {bool filter = true}) async {
   List<String> arguments = [];
   arguments.add("$script");
   arguments.addAll(scriptArguments);
diff --git a/pkg/compiler/lib/src/inferrer/builder.dart b/pkg/compiler/lib/src/inferrer/builder.dart
index 15d51e6fb0f..8190a624323 100644
--- a/pkg/compiler/lib/src/inferrer/builder.dart
+++ b/pkg/compiler/lib/src/inferrer/builder.dart
@@ -2461,7 +2461,7 @@ class LocalState {
   }
 
   LocalState mergeFlow(InferrerEngine inferrer, LocalState other,
-      {bool ignoreAborts: false}) {
+      {bool ignoreAborts = false}) {
     seenReturnOrThrow = false;
     seenBreakOrContinue = false;
 
diff --git a/pkg/compiler/test/annotations/annotations_test.dart b/pkg/compiler/test/annotations/annotations_test.dart
index 2f811230bf1..d48059e8b0a 100644
--- a/pkg/compiler/test/annotations/annotations_test.dart
+++ b/pkg/compiler/test/annotations/annotations_test.dart
@@ -36,7 +36,7 @@ class AnnotationDataComputer extends DataComputer<String> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     MemberDefinition definition = elementMap.getMemberDefinition(member);
diff --git a/pkg/compiler/test/closure/closure_test.dart b/pkg/compiler/test/closure/closure_test.dart
index 78c02dcb8b1..35d0711048d 100644
--- a/pkg/compiler/test/closure/closure_test.dart
+++ b/pkg/compiler/test/closure/closure_test.dart
@@ -34,7 +34,7 @@ class ClosureDataComputer extends DataComputer<String> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     GlobalLocalsMap localsMap =
@@ -78,7 +78,7 @@ class ClosureIrChecker extends IrDataExtractor<String> {
       this._localsMap,
       this.closureDataLookup,
       this._closedWorld,
-      {this.verbose: false})
+      {this.verbose = false})
       : super(reporter, actualMap) {
     pushMember(member);
   }
diff --git a/pkg/compiler/test/codegen/codegen_test_helper.dart b/pkg/compiler/test/codegen/codegen_test_helper.dart
index d8d813c6c8e..93ce46bcb3b 100644
--- a/pkg/compiler/test/codegen/codegen_test_helper.dart
+++ b/pkg/compiler/test/codegen/codegen_test_helper.dart
@@ -72,7 +72,7 @@ class CodegenDataComputer extends DataComputer<String> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     MemberDefinition definition = elementMap.getMemberDefinition(member);
diff --git a/pkg/compiler/test/codegen/expect_annotations_test.dart b/pkg/compiler/test/codegen/expect_annotations_test.dart
index 5587f3f6dad..5375dec9739 100644
--- a/pkg/compiler/test/codegen/expect_annotations_test.dart
+++ b/pkg/compiler/test/codegen/expect_annotations_test.dart
@@ -67,10 +67,10 @@ runTest() async {
   }
 
   void test(String name,
-      {bool expectNoInline: false,
-      AbstractValue expectedParameterType: null,
-      AbstractValue expectedReturnType: null,
-      bool expectAssumeDynamic: false}) {
+      {bool expectNoInline = false,
+      AbstractValue expectedParameterType = null,
+      AbstractValue expectedReturnType = null,
+      bool expectAssumeDynamic = false}) {
     LibraryEntity mainApp = closedWorld.elementEnvironment.mainLibrary;
     FunctionEntity method =
         closedWorld.elementEnvironment.lookupLibraryMember(mainApp, name);
diff --git a/pkg/compiler/test/codegen/late_field_test.dart b/pkg/compiler/test/codegen/late_field_test.dart
index fa34ffea173..235be83e51f 100644
--- a/pkg/compiler/test/codegen/late_field_test.dart
+++ b/pkg/compiler/test/codegen/late_field_test.dart
@@ -42,7 +42,7 @@ int test(Foo foo) {
 }
 """;
 
-Future check(String test, {String entry: 'test'}) {
+Future check(String test, {String entry = 'test'}) {
   return compile(test,
       entry: entry,
       methodName: 'test',
diff --git a/pkg/compiler/test/codegen/model_data/effectively_constant_state.dart b/pkg/compiler/test/codegen/model_data/effectively_constant_state.dart
index 311b7179be4..ab3b6e87a82 100644
--- a/pkg/compiler/test/codegen/model_data/effectively_constant_state.dart
+++ b/pkg/compiler/test/codegen/model_data/effectively_constant_state.dart
@@ -29,7 +29,7 @@ class Class {
   /*member: Class.state2:elided*/
   final Enum state2;
 
-  Class({this.state1: 1, this.state2: Enum.c});
+  Class({this.state1 = 1, this.state2 = Enum.c});
 
   /*member: Class.method1a:calls=[tester2(0)],params=0*/
   @pragma('dart2js:noInline')
diff --git a/pkg/compiler/test/codegen/model_test.dart b/pkg/compiler/test/codegen/model_test.dart
index 9862c606965..98ee4dc3594 100644
--- a/pkg/compiler/test/codegen/model_test.dart
+++ b/pkg/compiler/test/codegen/model_test.dart
@@ -39,7 +39,7 @@ class ModelDataComputer extends DataComputer<Features> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<Features>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     MemberDefinition definition = elementMap.getMemberDefinition(member);
diff --git a/pkg/compiler/test/codegen/pragma_annotations_test.dart b/pkg/compiler/test/codegen/pragma_annotations_test.dart
index 6dc0c9c4b94..3593afafd14 100644
--- a/pkg/compiler/test/codegen/pragma_annotations_test.dart
+++ b/pkg/compiler/test/codegen/pragma_annotations_test.dart
@@ -48,7 +48,7 @@ runTest() async {
   Expect.isFalse(compiler.compilationFailed, 'Unsuccessful compilation');
 
   void test(String name,
-      {bool expectNoInline: false, bool expectTryInline: false}) {
+      {bool expectNoInline = false, bool expectTryInline = false}) {
     LibraryEntity mainApp = closedWorld.elementEnvironment.mainLibrary;
     FunctionEntity method =
         closedWorld.elementEnvironment.lookupLibraryMember(mainApp, name);
diff --git a/pkg/compiler/test/codegen/string_reference_test.dart b/pkg/compiler/test/codegen/string_reference_test.dart
index 27d64d62330..31724f1045e 100644
--- a/pkg/compiler/test/codegen/string_reference_test.dart
+++ b/pkg/compiler/test/codegen/string_reference_test.dart
@@ -13,7 +13,7 @@ import 'package:compiler/src/js_backend/string_reference.dart'
 import 'package:compiler/src/js/js.dart' show prettyPrint;
 import 'package:js_ast/js_ast.dart' as js;
 
-void test(List<String> strings, String expected, {bool minified: false}) {
+void test(List<String> strings, String expected, {bool minified = false}) {
   var finalizer =
       StringReferenceFinalizerImpl(minified, shortestSharedLength: 5);
 
diff --git a/pkg/compiler/test/deferred_loading/data/instantiation0/lib1.dart b/pkg/compiler/test/deferred_loading/data/instantiation0/lib1.dart
index 59fba08a123..b0039c6d4a4 100644
--- a/pkg/compiler/test/deferred_loading/data/instantiation0/lib1.dart
+++ b/pkg/compiler/test/deferred_loading/data/instantiation0/lib1.dart
@@ -13,6 +13,6 @@ typedef dynamic G<T>(T v);
  constants=[InstantiationConstant([int*],FunctionConstant(getFoo))=1{b}],
  member_unit=1{b}
 */
-m(int x, {G<int> f: getFoo}) {
+m(int x, {G<int> f = getFoo}) {
   print(f(x));
 }
diff --git a/pkg/compiler/test/deferred_loading/data/instantiation1/lib1.dart b/pkg/compiler/test/deferred_loading/data/instantiation1/lib1.dart
index 59fba08a123..b0039c6d4a4 100644
--- a/pkg/compiler/test/deferred_loading/data/instantiation1/lib1.dart
+++ b/pkg/compiler/test/deferred_loading/data/instantiation1/lib1.dart
@@ -13,6 +13,6 @@ typedef dynamic G<T>(T v);
  constants=[InstantiationConstant([int*],FunctionConstant(getFoo))=1{b}],
  member_unit=1{b}
 */
-m(int x, {G<int> f: getFoo}) {
+m(int x, {G<int> f = getFoo}) {
   print(f(x));
 }
diff --git a/pkg/compiler/test/deferred_loading/data/instantiation1/lib2.dart b/pkg/compiler/test/deferred_loading/data/instantiation1/lib2.dart
index faddc09e5a1..6f1ff1d7e96 100644
--- a/pkg/compiler/test/deferred_loading/data/instantiation1/lib2.dart
+++ b/pkg/compiler/test/deferred_loading/data/instantiation1/lib2.dart
@@ -13,6 +13,6 @@ typedef dynamic G<T, S>(T v, S w);
  constants=[InstantiationConstant([int*, int*],FunctionConstant(getFoo))=3{c}],
  member_unit=3{c}
 */
-m(int x, int y, {G<int, int> f: getFoo}) {
+m(int x, int y, {G<int, int> f = getFoo}) {
   print(f(x, y));
 }
diff --git a/pkg/compiler/test/deferred_loading/data/instantiation2/lib1.dart b/pkg/compiler/test/deferred_loading/data/instantiation2/lib1.dart
index 59fba08a123..b0039c6d4a4 100644
--- a/pkg/compiler/test/deferred_loading/data/instantiation2/lib1.dart
+++ b/pkg/compiler/test/deferred_loading/data/instantiation2/lib1.dart
@@ -13,6 +13,6 @@ typedef dynamic G<T>(T v);
  constants=[InstantiationConstant([int*],FunctionConstant(getFoo))=1{b}],
  member_unit=1{b}
 */
-m(int x, {G<int> f: getFoo}) {
+m(int x, {G<int> f = getFoo}) {
   print(f(x));
 }
diff --git a/pkg/compiler/test/deferred_loading/data/instantiation2/lib2.dart b/pkg/compiler/test/deferred_loading/data/instantiation2/lib2.dart
index c7537c63ae4..ed44b0a60fd 100644
--- a/pkg/compiler/test/deferred_loading/data/instantiation2/lib2.dart
+++ b/pkg/compiler/test/deferred_loading/data/instantiation2/lib2.dart
@@ -13,6 +13,6 @@ typedef dynamic G<T>(T v);
  constants=[InstantiationConstant([int*],FunctionConstant(getFoo))=3{c}],
  member_unit=3{c}
 */
-m(int x, {G<int> f: getFoo}) {
+m(int x, {G<int> f = getFoo}) {
   print(f(x));
 }
diff --git a/pkg/compiler/test/deferred_loading/deferred_loading_test_helper.dart b/pkg/compiler/test/deferred_loading/deferred_loading_test_helper.dart
index b576e4294aa..c93f7be3599 100644
--- a/pkg/compiler/test/deferred_loading/deferred_loading_test_helper.dart
+++ b/pkg/compiler/test/deferred_loading/deferred_loading_test_helper.dart
@@ -104,7 +104,7 @@ class OutputUnitDataComputer extends DataComputer<Features> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<Features>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     MemberDefinition definition = elementMap.getMemberDefinition(member);
@@ -116,7 +116,7 @@ class OutputUnitDataComputer extends DataComputer<Features> {
   @override
   void computeClassData(Compiler compiler, ClassEntity cls,
       Map<Id, ActualData<Features>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     ClassDefinition definition = elementMap.getClassDefinition(cls);
diff --git a/pkg/compiler/test/dump_info/dump_info_new_regression_test.dart b/pkg/compiler/test/dump_info/dump_info_new_regression_test.dart
index 5699d15d68e..4074294ffd7 100644
--- a/pkg/compiler/test/dump_info/dump_info_new_regression_test.dart
+++ b/pkg/compiler/test/dump_info/dump_info_new_regression_test.dart
@@ -161,7 +161,7 @@ class DumpInfoDataComputer extends DataComputer<Features> {
   @override
   void computeClassData(Compiler compiler, ClassEntity cls,
       Map<Id, ActualData<Features>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     final converter = info.AllInfoToJsonConverter(isBackwardCompatible: true);
     DumpInfoStateData dumpInfoState = compiler.dumpInfoStateForTesting;
     TreeShakingInfoVisitor().filter(dumpInfoState.info);
@@ -194,7 +194,7 @@ class DumpInfoDataComputer extends DataComputer<Features> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<Features>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     final converter = info.AllInfoToJsonConverter(isBackwardCompatible: true);
     DumpInfoStateData dumpInfoState = compiler.dumpInfoStateForTesting;
     TreeShakingInfoVisitor().filter(dumpInfoState.info);
diff --git a/pkg/compiler/test/dump_info/dump_info_new_test.dart b/pkg/compiler/test/dump_info/dump_info_new_test.dart
index 9599f1a8a02..8af69b533c5 100644
--- a/pkg/compiler/test/dump_info/dump_info_new_test.dart
+++ b/pkg/compiler/test/dump_info/dump_info_new_test.dart
@@ -115,7 +115,7 @@ class DumpInfoDataComputer extends DataComputer<Features> {
   @override
   void computeClassData(Compiler compiler, ClassEntity cls,
       Map<Id, ActualData<Features>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     final converter = info.AllInfoToJsonConverter(isBackwardCompatible: true);
     DumpInfoStateData dumpInfoState = compiler.dumpInfoStateForTesting;
 
@@ -147,7 +147,7 @@ class DumpInfoDataComputer extends DataComputer<Features> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<Features>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     final converter = info.AllInfoToJsonConverter(isBackwardCompatible: true);
     DumpInfoStateData dumpInfoState = compiler.dumpInfoStateForTesting;
 
diff --git a/pkg/compiler/test/dump_info/dump_info_test.dart b/pkg/compiler/test/dump_info/dump_info_test.dart
index 30594651e27..33739cda945 100644
--- a/pkg/compiler/test/dump_info/dump_info_test.dart
+++ b/pkg/compiler/test/dump_info/dump_info_test.dart
@@ -113,7 +113,7 @@ class DumpInfoDataComputer extends DataComputer<Features> {
   @override
   void computeClassData(Compiler compiler, ClassEntity cls,
       Map<Id, ActualData<Features>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     final converter = info.AllInfoToJsonConverter(isBackwardCompatible: true);
     DumpInfoStateData dumpInfoState = compiler.dumpInfoStateForTesting;
 
@@ -145,7 +145,7 @@ class DumpInfoDataComputer extends DataComputer<Features> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<Features>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     final converter = info.AllInfoToJsonConverter(isBackwardCompatible: true);
     DumpInfoStateData dumpInfoState = compiler.dumpInfoStateForTesting;
 
diff --git a/pkg/compiler/test/end_to_end/dump_info2_test.dart b/pkg/compiler/test/end_to_end/dump_info2_test.dart
index 96c199e9cec..e5d7fa4088c 100644
--- a/pkg/compiler/test/end_to_end/dump_info2_test.dart
+++ b/pkg/compiler/test/end_to_end/dump_info2_test.dart
@@ -135,7 +135,7 @@ main() {
   });
 }
 
-runTests({bool useBinary: false}) async {
+runTests({bool useBinary = false}) async {
   await infoTest(TEST_BASIC, useBinary, (info) {
     Expect.isTrue(info.functions.isNotEmpty);
     Expect.isTrue(info.libraries.isNotEmpty);
diff --git a/pkg/compiler/test/end_to_end/exit_code_test.dart b/pkg/compiler/test/end_to_end/exit_code_test.dart
index 537afb37292..07e6870594e 100644
--- a/pkg/compiler/test/end_to_end/exit_code_test.dart
+++ b/pkg/compiler/test/end_to_end/exit_code_test.dart
@@ -212,7 +212,7 @@ void main() {
   entry.enableWriteString = false;
 
   Map<String, int> _expectedExitCode(
-      {bool beforeRun: false, bool fatalWarnings: false}) {
+      {bool beforeRun = false, bool fatalWarnings = false}) {
     if (beforeRun) {
       return {
         '': 0,
diff --git a/pkg/compiler/test/end_to_end/launch_helper.dart b/pkg/compiler/test/end_to_end/launch_helper.dart
index f0eef27a900..7b45d2904c6 100644
--- a/pkg/compiler/test/end_to_end/launch_helper.dart
+++ b/pkg/compiler/test/end_to_end/launch_helper.dart
@@ -25,7 +25,7 @@ List<String> dart2JsCommand(List<String> args) {
   return command;
 }
 
-Future<ProcessResult> launchDart2Js(args, {bool noStdoutEncoding: false}) {
+Future<ProcessResult> launchDart2Js(args, {bool noStdoutEncoding = false}) {
   if (noStdoutEncoding) {
     return Process.run(Platform.executable, dart2JsCommand(args),
         stdoutEncoding: null);
diff --git a/pkg/compiler/test/end_to_end/modular_loader_test.dart b/pkg/compiler/test/end_to_end/modular_loader_test.dart
index 5663824ed84..1000645754e 100644
--- a/pkg/compiler/test/end_to_end/modular_loader_test.dart
+++ b/pkg/compiler/test/end_to_end/modular_loader_test.dart
@@ -70,7 +70,7 @@ main() {
 
 /// Generate a component for a modular complation unit.
 Future<List<int>> compileUnit(List<String> inputs, Map<String, dynamic> sources,
-    {List<String> deps: const []}) async {
+    {List<String> deps = const []}) async {
   var fs = MemoryFileSystem(_defaultDir);
   sources.forEach((name, data) {
     var entity = fs.entityForUri(toTestUri(name));
diff --git a/pkg/compiler/test/end_to_end/output_type_test.dart b/pkg/compiler/test/end_to_end/output_type_test.dart
index 3f646144fd3..01d403da4bd 100644
--- a/pkg/compiler/test/end_to_end/output_type_test.dart
+++ b/pkg/compiler/test/end_to_end/output_type_test.dart
@@ -45,7 +45,7 @@ class TestRandomAccessFileOutputProvider implements api.CompilerOutput {
 CompileFunc oldCompileFunc;
 
 Future<Null> test(List<String> arguments, List<String> expectedOutput,
-    {List<String> groupOutputs: const <String>[]}) async {
+    {List<String> groupOutputs = const <String>[]}) async {
   List<String> options = new List<String>.from(arguments)
     ..add('--platform-binaries=$sdkPlatformBinariesPath')
     ..add('--libraries-spec=$sdkLibrariesSpecificationUri');
diff --git a/pkg/compiler/test/end_to_end/user_crash_test.dart b/pkg/compiler/test/end_to_end/user_crash_test.dart
index b44eb6635a7..39be98dd3db 100644
--- a/pkg/compiler/test/end_to_end/user_crash_test.dart
+++ b/pkg/compiler/test/end_to_end/user_crash_test.dart
@@ -46,7 +46,7 @@ main() {
 }
 
 void test(String title, RunResult result,
-    {List expectedLines: const [], List expectedExceptions: const []}) {
+    {List expectedLines = const [], List expectedExceptions = const []}) {
   print('--------------------------------------------------------------------');
   print('Running $title');
   print('--------------------------------------------------------------------');
@@ -66,7 +66,7 @@ void test(String title, RunResult result,
 }
 
 Future<RunResult> run(
-    {Map<String, String> memorySourceFiles: const {'main.dart': 'main() {}'},
+    {Map<String, String> memorySourceFiles = const {'main.dart': 'main() {}'},
     api.CompilerDiagnostics diagnostics}) async {
   RunResult result = new RunResult();
   await runZoned(() async {
diff --git a/pkg/compiler/test/equivalence/check_helpers.dart b/pkg/compiler/test/equivalence/check_helpers.dart
index ea9cf9b8017..1bff1d39332 100644
--- a/pkg/compiler/test/equivalence/check_helpers.dart
+++ b/pkg/compiler/test/equivalence/check_helpers.dart
@@ -120,7 +120,7 @@ bool checkListEquivalence<T>(
 /// but not in [set1] are returned.
 Set<E> computeSetDifference<E>(
     Iterable<E> set1, Iterable<E> set2, List<List<E>> common, List<E> unfound,
-    {bool sameElement(E a, E b): equality, void checkElements(E a, E b)}) {
+    {bool sameElement(E a, E b) = equality, void checkElements(E a, E b)}) {
   // TODO(johnniwinther): Avoid the quadratic cost here. Some ideas:
   // - convert each set to a list and sort it first, then compare by walking
   // both lists in parallel
@@ -185,7 +185,7 @@ bool checkMapEquivalence<K, V>(
     Map<K, V> map2,
     bool sameKey(K a, K b),
     bool sameValue(V a, V b),
-    {bool allowExtra: false}) {
+    {bool allowExtra = false}) {
   var common = <List<K>>[];
   var unfound = <K>[];
   var extra = computeSetDifference(map1.keys, map2.keys, common, unfound,
@@ -207,12 +207,12 @@ bool checkMapEquivalence<K, V>(
 
 void checkLists<T>(List<T> list1, List<T> list2, String messagePrefix,
     bool sameElement(T a, T b),
-    {bool verbose: false,
+    {bool verbose = false,
     void onSameElement(T a, T b),
     void onDifferentElements(T a, T b),
     void onUnfoundElement(T a),
     void onExtraElement(T b),
-    String elementToString(key): defaultToString}) {
+    String elementToString(key) = defaultToString}) {
   List<List> common = <List>[];
   List mismatch = [];
   List unfound = [];
@@ -281,15 +281,15 @@ void checkLists<T>(List<T> list1, List<T> list2, String messagePrefix,
 
 void checkSets<E>(Iterable<E> set1, Iterable<E> set2, String messagePrefix,
     bool sameElement(E a, E b),
-    {bool failOnUnfound: true,
-    bool failOnExtra: true,
-    bool verbose: false,
+    {bool failOnUnfound = true,
+    bool failOnExtra = true,
+    bool verbose = false,
     void onSameElement(E a, E b),
     void onUnfoundElement(E a),
     void onExtraElement(E b),
     bool elementFilter(E element),
     elementConverter(E element),
-    String elementToString(E key): defaultToString}) {
+    String elementToString(E key) = defaultToString}) {
   if (elementFilter != null) {
     set1 = set1.where(elementFilter);
     set2 = set2.where(elementFilter);
@@ -342,12 +342,12 @@ String defaultToString(obj) => '$obj';
 
 void checkMaps<K, V>(Map<K, V> map1, Map<K, V> map2, String messagePrefix,
     bool sameKey(K a, K b), bool sameValue(V a, V b),
-    {bool failOnUnfound: true,
-    bool failOnMismatch: true,
+    {bool failOnUnfound = true,
+    bool failOnMismatch = true,
     bool keyFilter(K key),
-    bool verbose: false,
-    String keyToString(K key): defaultToString,
-    String valueToString(V key): defaultToString}) {
+    bool verbose = false,
+    String keyToString(K key) = defaultToString,
+    String valueToString(V key) = defaultToString}) {
   var common = <List<K>>[];
   var unfound = <K>[];
   var mismatch = <List<K>>[];
diff --git a/pkg/compiler/test/equivalence/id_equivalence_helper.dart b/pkg/compiler/test/equivalence/id_equivalence_helper.dart
index e4e02eaf63a..74bfc5fb744 100644
--- a/pkg/compiler/test/equivalence/id_equivalence_helper.dart
+++ b/pkg/compiler/test/equivalence/id_equivalence_helper.dart
@@ -124,14 +124,14 @@ void reportError(
 /// Actual data is computed using [computeMemberData].
 Future<CompiledData<T>> computeData<T>(String name, Uri entryPoint,
     Map<String, String> memorySourceFiles, DataComputer<T> dataComputer,
-    {List<String> options: const <String>[],
-    bool verbose: false,
-    bool testFrontend: false,
-    bool printCode: false,
-    bool forUserLibrariesOnly: true,
-    bool skipUnprocessedMembers: false,
-    bool skipFailedCompilations: false,
-    Iterable<Id> globalIds: const <Id>[],
+    {List<String> options = const <String>[],
+    bool verbose = false,
+    bool testFrontend = false,
+    bool printCode = false,
+    bool forUserLibrariesOnly = true,
+    bool skipUnprocessedMembers = false,
+    bool skipFailedCompilations = false,
+    Iterable<Id> globalIds = const <Id>[],
     Future<void> verifyCompiler(String test, Compiler compiler)}) async {
   OutputCollector outputCollector = new OutputCollector();
   DiagnosticCollector diagnosticCollector = new DiagnosticCollector();
@@ -368,7 +368,7 @@ class Dart2jsCompiledData<T> extends CompiledData<T> {
 
   @override
   void reportError(Uri uri, int offset, String message,
-      {bool succinct: false}) {
+      {bool succinct = false}) {
     compiler.reporter.reportErrorMessage(
         computeSourceSpanFromUriOffset(uri, offset),
         MessageKind.GENERIC,
@@ -400,14 +400,14 @@ class TestConfig {
 /// If [forUserSourceFilesOnly] is true, we examine the elements in the main
 /// file and any supporting libraries.
 Future<void> checkTests<T>(Directory dataDir, DataComputer<T> dataComputer,
-    {List<String> skip: const <String>[],
+    {List<String> skip = const <String>[],
     bool filterActualData(IdValue idValue, ActualData<T> actualData),
-    List<String> options: const <String>[],
-    List<String> args: const <String>[],
-    bool forUserLibrariesOnly: true,
+    List<String> options = const <String>[],
+    List<String> args = const <String>[],
+    bool forUserLibrariesOnly = true,
     Callback setUpFunction,
-    int shards: 1,
-    int shardIndex: 0,
+    int shards = 1,
+    int shardIndex = 0,
     void onTest(Uri uri),
     List<TestConfig> testedConfigs = const [],
     Map<String, List<String>> perTestOptions = const {},
@@ -498,11 +498,11 @@ Future<TestResult<T>> runTestForConfiguration<T>(
     TestData testData,
     List<String> options,
     {bool filterActualData(IdValue idValue, ActualData<T> actualData),
-    bool verbose: false,
-    bool succinct: false,
-    bool printCode: false,
-    bool forUserLibrariesOnly: true,
-    bool testAfterFailures: false,
+    bool verbose = false,
+    bool succinct = false,
+    bool printCode = false,
+    bool forUserLibrariesOnly = true,
+    bool testAfterFailures = false,
     Future<void> verifyCompiler(String test, Compiler compiler)}) async {
   MemberAnnotations<IdValue> annotations =
       testData.expectedMaps[testConfiguration.marker];
diff --git a/pkg/compiler/test/equivalence/id_testing_test.dart b/pkg/compiler/test/equivalence/id_testing_test.dart
index 1f9bfe35f47..52fd48958a3 100644
--- a/pkg/compiler/test/equivalence/id_testing_test.dart
+++ b/pkg/compiler/test/equivalence/id_testing_test.dart
@@ -29,7 +29,7 @@ class IdTestingDataComputer extends DataComputer<String> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     KernelFrontendStrategy frontendStrategy = compiler.frontendStrategy;
     KernelToElementMap elementMap = frontendStrategy.elementMap;
     ir.Member node = elementMap.getMemberNode(member);
diff --git a/pkg/compiler/test/equivalence/show_helper.dart b/pkg/compiler/test/equivalence/show_helper.dart
index a022064a794..d8b955bde6d 100644
--- a/pkg/compiler/test/equivalence/show_helper.dart
+++ b/pkg/compiler/test/equivalence/show_helper.dart
@@ -27,7 +27,7 @@ ArgParser createArgParser() {
 }
 
 show<T>(ArgResults argResults, DataComputer<T> dataComputer,
-    {List<String> options: const <String>[]}) async {
+    {List<String> options = const <String>[]}) async {
   dataComputer.setup();
 
   if (argResults.wasParsed('colors')) {
diff --git a/pkg/compiler/test/field_analysis/jdata/constant_fields.dart b/pkg/compiler/test/field_analysis/jdata/constant_fields.dart
index f48ffa8d764..6079a43d135 100644
--- a/pkg/compiler/test/field_analysis/jdata/constant_fields.dart
+++ b/pkg/compiler/test/field_analysis/jdata/constant_fields.dart
@@ -15,18 +15,18 @@ class Class1 {
   /*member: Class1.field1:constant=BoolConstant(false)*/
   final bool field1;
 
-  const Class1({this.field1: false});
+  const Class1({this.field1 = false});
 }
 
 class Class2 {
   /*spec.member: Class2.field2:constant=BoolConstant(true)*/
   final bool field2;
 
-  const Class2({this.field2: false});
+  const Class2({this.field2 = false});
 }
 
 class Class3 {
   final bool field3;
 
-  const Class3({this.field3: false});
+  const Class3({this.field3 = false});
 }
diff --git a/pkg/compiler/test/field_analysis/jdata/effectively_constant_state.dart b/pkg/compiler/test/field_analysis/jdata/effectively_constant_state.dart
index b0c0c7eed37..ac939bdfa30 100644
--- a/pkg/compiler/test/field_analysis/jdata/effectively_constant_state.dart
+++ b/pkg/compiler/test/field_analysis/jdata/effectively_constant_state.dart
@@ -28,7 +28,7 @@ class Class {
   /*member: Class.state2:constant=ConstructedConstant(Enum(_name=StringConstant("c"),index=IntConstant(2)))*/
   final Enum state2;
 
-  Class({this.state1: 1, this.state2: Enum.c});
+  Class({this.state1 = 1, this.state2 = Enum.c});
 
   @pragma('dart2js:noInline')
   method1a() {
diff --git a/pkg/compiler/test/field_analysis/jfield_analysis_test.dart b/pkg/compiler/test/field_analysis/jfield_analysis_test.dart
index 857f7e8cb6a..fdc67362986 100644
--- a/pkg/compiler/test/field_analysis/jfield_analysis_test.dart
+++ b/pkg/compiler/test/field_analysis/jfield_analysis_test.dart
@@ -41,7 +41,7 @@ class JAllocatorAnalysisDataComputer extends DataComputer<Features> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<Features>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     if (member.isField) {
       DartTypes dartTypes = compiler.frontendStrategy.commonElements.dartTypes;
       JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
diff --git a/pkg/compiler/test/field_analysis/kdata/constant_fields.dart b/pkg/compiler/test/field_analysis/kdata/constant_fields.dart
index 6adc0615eec..977d0460e95 100644
--- a/pkg/compiler/test/field_analysis/kdata/constant_fields.dart
+++ b/pkg/compiler/test/field_analysis/kdata/constant_fields.dart
@@ -15,19 +15,19 @@ class Class1 {
   /*member: Class1.field1:Class1.=field1:BoolConstant(false),initial=NullConstant*/
   final bool field1;
 
-  const Class1({this.field1: false});
+  const Class1({this.field1 = false});
 }
 
 class Class2 {
   /*member: Class2.field2:Class2.=field2:BoolConstant(false),initial=NullConstant*/
   final bool field2;
 
-  const Class2({this.field2: false});
+  const Class2({this.field2 = false});
 }
 
 class Class3 {
   /*member: Class3.field3:Class3.=field3:BoolConstant(false),initial=NullConstant*/
   final bool field3;
 
-  const Class3({this.field3: false});
+  const Class3({this.field3 = false});
 }
diff --git a/pkg/compiler/test/field_analysis/kfield_analysis_test.dart b/pkg/compiler/test/field_analysis/kfield_analysis_test.dart
index 22af00ea7d3..21dd87d1b4b 100644
--- a/pkg/compiler/test/field_analysis/kfield_analysis_test.dart
+++ b/pkg/compiler/test/field_analysis/kfield_analysis_test.dart
@@ -35,7 +35,7 @@ class KAllocatorAnalysisDataComputer extends DataComputer<Features> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<Features>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     if (member.isField) {
       KernelFrontendStrategy frontendStrategy = compiler.frontendStrategy;
       DartTypes dartTypes = frontendStrategy.commonElements.dartTypes;
diff --git a/pkg/compiler/test/generic_methods/function_type_variable_test.dart b/pkg/compiler/test/generic_methods/function_type_variable_test.dart
index 0b5741ba408..a9f008b69df 100644
--- a/pkg/compiler/test/generic_methods/function_type_variable_test.dart
+++ b/pkg/compiler/test/generic_methods/function_type_variable_test.dart
@@ -133,7 +133,7 @@ main() {
     }
 
     testRelations(DartType a, DartType b,
-        {bool areEqual: false, bool isSubtype: false}) {
+        {bool areEqual = false, bool isSubtype = false}) {
       if (areEqual) {
         isSubtype = true;
       }
diff --git a/pkg/compiler/test/helpers/compiler_helper.dart b/pkg/compiler/test/helpers/compiler_helper.dart
index a218fd75657..04ec0e5e55f 100644
--- a/pkg/compiler/test/helpers/compiler_helper.dart
+++ b/pkg/compiler/test/helpers/compiler_helper.dart
@@ -37,17 +37,17 @@ String _commonTestPath(bool soundNullSafety) {
 /// If [check] is provided, it is executed on the code for [entry] before
 /// returning.
 Future<String> compile(String code,
-    {String entry: 'main',
+    {String entry = 'main',
     String methodName,
-    bool enableTypeAssertions: false,
-    bool minify: false,
-    bool disableInlining: true,
-    bool disableTypeInference: true,
-    bool omitImplicitChecks: true,
-    bool enableVariance: false,
+    bool enableTypeAssertions = false,
+    bool minify = false,
+    bool disableInlining = true,
+    bool disableTypeInference = true,
+    bool omitImplicitChecks = true,
+    bool enableVariance = false,
     void check(String generatedEntry),
-    bool returnAll: false,
-    bool soundNullSafety: false}) async {
+    bool returnAll = false,
+    bool soundNullSafety = false}) async {
   OutputCollector outputCollector = returnAll ? new OutputCollector() : null;
   List<String> options = <String>[];
   if (disableTypeInference) {
@@ -109,9 +109,9 @@ Future<String> compile(String code,
 }
 
 Future<String> compileAll(String code,
-    {bool disableInlining: true,
-    bool minify: false,
-    bool soundNullSafety: false,
+    {bool disableInlining = true,
+    bool minify = false,
+    bool soundNullSafety = false,
     int expectedErrors,
     int expectedWarnings}) async {
   OutputCollector outputCollector = new OutputCollector();
diff --git a/pkg/compiler/test/helpers/d8_helper.dart b/pkg/compiler/test/helpers/d8_helper.dart
index d02ff9e3707..d9e0b9fcb30 100644
--- a/pkg/compiler/test/helpers/d8_helper.dart
+++ b/pkg/compiler/test/helpers/d8_helper.dart
@@ -19,7 +19,7 @@ import 'package:sourcemap_testing/src/stacktrace_helper.dart';
 import '../helpers/memory_compiler.dart';
 
 Future createTemp(Uri entryPoint, Map<String, String> memorySourceFiles,
-    {bool printSteps: false}) async {
+    {bool printSteps = false}) async {
   if (memorySourceFiles.isNotEmpty) {
     Directory dir = await Directory.systemTemp.createTemp('dart2js-with-dill');
     if (printSteps) {
@@ -35,11 +35,11 @@ Future createTemp(Uri entryPoint, Map<String, String> memorySourceFiles,
 
 Future<D8Result> runWithD8(
     {Uri entryPoint,
-    Map<String, String> memorySourceFiles: const <String, String>{},
-    List<String> options: const <String>[],
+    Map<String, String> memorySourceFiles = const <String, String>{},
+    List<String> options = const <String>[],
     String expectedOutput,
-    bool printJs: false,
-    bool printSteps: false}) async {
+    bool printJs = false,
+    bool printSteps = false}) async {
   retainDataForTesting = true;
   entryPoint ??= Uri.parse('memory:main.dart');
   Uri mainFile =
diff --git a/pkg/compiler/test/helpers/element_lookup.dart b/pkg/compiler/test/helpers/element_lookup.dart
index e64400c062a..93360105856 100644
--- a/pkg/compiler/test/helpers/element_lookup.dart
+++ b/pkg/compiler/test/helpers/element_lookup.dart
@@ -37,7 +37,7 @@ ClassEntity findClass(JClosedWorld closedWorld, String name) {
 
 MemberEntity findClassMember(
     JClosedWorld closedWorld, String className, String memberName,
-    {bool required: true}) {
+    {bool required = true}) {
   bool isSetter = false;
   if (memberName.endsWith('=')) {
     memberName = memberName.substring(0, memberName.length - 1);
diff --git a/pkg/compiler/test/helpers/memory_compiler.dart b/pkg/compiler/test/helpers/memory_compiler.dart
index 451ebc74622..a290d7379d5 100644
--- a/pkg/compiler/test/helpers/memory_compiler.dart
+++ b/pkg/compiler/test/helpers/memory_compiler.dart
@@ -56,7 +56,7 @@ class MultiDiagnostics implements api.CompilerDiagnostics {
 
 api.CompilerDiagnostics createCompilerDiagnostics(
     api.CompilerDiagnostics diagnostics, SourceFileProvider provider,
-    {bool showDiagnostics: true, bool verbose: false}) {
+    {bool showDiagnostics = true, bool verbose = false}) {
   api.CompilerDiagnostics handler = diagnostics;
   if (showDiagnostics) {
     if (diagnostics == null) {
@@ -79,16 +79,16 @@ fe.InitializedCompilerState kernelInitializedCompilerState;
 /// contents or string file name to binary file contents (hence the `dynamic`
 /// type for the second parameter).
 Future<api.CompilationResult> runCompiler(
-    {Map<String, dynamic> memorySourceFiles: const <String, dynamic>{},
+    {Map<String, dynamic> memorySourceFiles = const <String, dynamic>{},
     Uri entryPoint,
     api.CompilerDiagnostics diagnosticHandler,
     api.CompilerOutput outputProvider,
-    List<String> options: const <String>[],
-    bool showDiagnostics: true,
+    List<String> options = const <String>[],
+    bool showDiagnostics = true,
     Uri librariesSpecificationUri,
     Uri packageConfig,
     void beforeRun(Compiler compiler),
-    bool unsafeToTouchSourceFiles: false}) async {
+    bool unsafeToTouchSourceFiles = false}) async {
   if (entryPoint == null) {
     entryPoint = Uri.parse('memory:main.dart');
   }
@@ -114,14 +114,14 @@ Future<api.CompilationResult> runCompiler(
 
 Compiler compilerFor(
     {Uri entryPoint,
-    Map<String, dynamic> memorySourceFiles: const <String, dynamic>{},
+    Map<String, dynamic> memorySourceFiles = const <String, dynamic>{},
     api.CompilerDiagnostics diagnosticHandler,
     api.CompilerOutput outputProvider,
-    List<String> options: const <String>[],
-    bool showDiagnostics: true,
+    List<String> options = const <String>[],
+    bool showDiagnostics = true,
     Uri librariesSpecificationUri,
     Uri packageConfig,
-    bool unsafeToTouchSourceFiles: false}) {
+    bool unsafeToTouchSourceFiles = false}) {
   retainDataForTesting = true;
   librariesSpecificationUri ??= sdkLibrariesSpecificationUri;
 
diff --git a/pkg/compiler/test/helpers/memory_source_file_helper.dart b/pkg/compiler/test/helpers/memory_source_file_helper.dart
index 0ab605c3bd1..8b06baf9e9b 100644
--- a/pkg/compiler/test/helpers/memory_source_file_helper.dart
+++ b/pkg/compiler/test/helpers/memory_source_file_helper.dart
@@ -64,6 +64,6 @@ class MemorySourceFileProvider extends SourceFileProvider {
 
   @override
   Future<api.Input> readFromUri(Uri resourceUri,
-          {api.InputKind inputKind: api.InputKind.UTF8}) =>
+          {api.InputKind inputKind = api.InputKind.UTF8}) =>
       readBytesFromUri(resourceUri, inputKind);
 }
diff --git a/pkg/compiler/test/helpers/text_helpers.dart b/pkg/compiler/test/helpers/text_helpers.dart
index d434a2ac256..b09b0a40de3 100644
--- a/pkg/compiler/test/helpers/text_helpers.dart
+++ b/pkg/compiler/test/helpers/text_helpers.dart
@@ -8,7 +8,7 @@
 /// of the [windowSize] lines before and after are printed and the mismatch line
 /// number is returned. If identical, nothing is printed and `null` is returned.
 int checkEqualContentAndShowDiff(String text1, String text2,
-    {int windowSize: 20,
+    {int windowSize = 20,
     bool Function(int, List<String>, List<String>) filter}) {
   List<String> lines1 = text1.split('\n');
   List<String> lines2 = text2.split('\n');
diff --git a/pkg/compiler/test/helpers/type_test_helper.dart b/pkg/compiler/test/helpers/type_test_helper.dart
index c5b838a79a5..467d74322c5 100644
--- a/pkg/compiler/test/helpers/type_test_helper.dart
+++ b/pkg/compiler/test/helpers/type_test_helper.dart
@@ -35,11 +35,11 @@ class TypeEnvironment {
   final bool testBackendWorld;
 
   static Future<TypeEnvironment> create(String source,
-      {bool expectNoErrors: false,
-      bool expectNoWarningsOrErrors: false,
-      bool testBackendWorld: false,
-      List<String> options: const <String>[],
-      Map<String, String> fieldTypeMap: const <String, String>{}}) async {
+      {bool expectNoErrors = false,
+      bool expectNoWarningsOrErrors = false,
+      bool testBackendWorld = false,
+      List<String> options = const <String>[],
+      Map<String, String> fieldTypeMap = const <String, String>{}}) async {
     memory.DiagnosticCollector collector = new memory.DiagnosticCollector();
     Uri uri = Uri.parse('memory:main.dart');
     memory.CompilationResult result = await memory.runCompiler(
@@ -62,7 +62,7 @@ class TypeEnvironment {
     return new TypeEnvironment._(compiler, testBackendWorld: testBackendWorld);
   }
 
-  TypeEnvironment._(Compiler this.compiler, {this.testBackendWorld: false});
+  TypeEnvironment._(Compiler this.compiler, {this.testBackendWorld = false});
 
   DartType legacyWrap(DartType type) {
     return options.useLegacySubtyping ? types.legacyType(type) : type;
@@ -225,7 +225,7 @@ class FunctionTypeData {
 ///
 ///     $returnType $name$parameters => null;
 String createMethods(List<FunctionTypeData> dataList,
-    {String additionalData: '', String prefix: ''}) {
+    {String additionalData = '', String prefix = ''}) {
   StringBuffer sb = new StringBuffer();
   for (FunctionTypeData data in dataList) {
     sb.writeln(
@@ -243,7 +243,7 @@ String createMethods(List<FunctionTypeData> dataList,
 ///
 /// where a field using the typedef is add to make the type accessible by name.
 String createTypedefs(List<FunctionTypeData> dataList,
-    {String additionalData: '', String prefix: ''}) {
+    {String additionalData = '', String prefix = ''}) {
   StringBuffer sb = new StringBuffer();
   for (int index = 0; index < dataList.length; index++) {
     FunctionTypeData data = dataList[index];
@@ -259,7 +259,7 @@ String createTypedefs(List<FunctionTypeData> dataList,
 }
 
 /// Return source code that uses the function types in [dataList].
-String createUses(List<FunctionTypeData> dataList, {String prefix: ''}) {
+String createUses(List<FunctionTypeData> dataList, {String prefix = ''}) {
   StringBuffer sb = new StringBuffer();
   for (int index = 0; index < dataList.length; index++) {
     FunctionTypeData data = dataList[index];
diff --git a/pkg/compiler/test/impact/data/initializers.dart b/pkg/compiler/test/impact/data/initializers.dart
index 842f6d95826..d450e291ebd 100644
--- a/pkg/compiler/test/impact/data/initializers.dart
+++ b/pkg/compiler/test/impact/data/initializers.dart
@@ -116,7 +116,7 @@ testDefaultValuesPositional([bool value = false]) {}
   inst:JSBool,
   param:bool*]
 */
-testDefaultValuesNamed({bool value: false}) {}
+testDefaultValuesNamed({bool value = false}) {}
 
 class ClassFieldInitializer1 {
   /*member: ClassFieldInitializer1.field:type=[inst:JSNull]*/
diff --git a/pkg/compiler/test/impact/impact_test.dart b/pkg/compiler/test/impact/impact_test.dart
index cbddfb8be30..cdc95cb69fe 100644
--- a/pkg/compiler/test/impact/impact_test.dart
+++ b/pkg/compiler/test/impact/impact_test.dart
@@ -46,7 +46,7 @@ class ImpactDataComputer extends DataComputer<Features> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<Features>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     KernelFrontendStrategy frontendStrategy = compiler.frontendStrategy;
     WorldImpact impact = compiler.impactCache[member];
     ir.Member node = frontendStrategy.elementMap.getMemberNode(member);
diff --git a/pkg/compiler/test/inference/callers_test.dart b/pkg/compiler/test/inference/callers_test.dart
index 8f9250d7d60..0b185f23758 100644
--- a/pkg/compiler/test/inference/callers_test.dart
+++ b/pkg/compiler/test/inference/callers_test.dart
@@ -32,7 +32,7 @@ class CallersDataComputer extends DataComputer<String> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     MemberDefinition definition = elementMap.getMemberDefinition(member);
diff --git a/pkg/compiler/test/inference/data/const_closure_default.dart b/pkg/compiler/test/inference/data/const_closure_default.dart
index 5b60f7b957d..b6a4c4775af 100644
--- a/pkg/compiler/test/inference/data/const_closure_default.dart
+++ b/pkg/compiler/test/inference/data/const_closure_default.dart
@@ -28,19 +28,19 @@ defaultFn6(/*[exact=JSUInt31]*/ a) => a;
 foo1([/*[subclass=Closure]*/ fn = defaultFn1]) => fn(54);
 
 /*member: foo2:[null|subclass=Object]*/
-foo2({/*[subclass=Closure]*/ fn: defaultFn2}) => fn(54);
+foo2({/*[subclass=Closure]*/ fn = defaultFn2}) => fn(54);
 
 /*member: foo3:[null|subclass=Object]*/
 foo3([/*[subclass=Closure]*/ fn = defaultFn3]) => fn(54);
 
 /*member: foo4:[null|subclass=Object]*/
-foo4({/*[subclass=Closure]*/ fn: defaultFn4}) => fn(54);
+foo4({/*[subclass=Closure]*/ fn = defaultFn4}) => fn(54);
 
 /*member: foo5:[null|subclass=Object]*/
 foo5([/*[null|subclass=Object]*/ fn = defaultFn5]) => fn(54);
 
 /*member: foo6:[null|subclass=Object]*/
-foo6({/*[null|subclass=Object]*/ fn: defaultFn6}) => fn(54);
+foo6({/*[null|subclass=Object]*/ fn = defaultFn6}) => fn(54);
 
 /*member: main:[null]*/
 main() {
diff --git a/pkg/compiler/test/inference/data/mixin_constructor_default_parameter_values/lib.dart b/pkg/compiler/test/inference/data/mixin_constructor_default_parameter_values/lib.dart
index caf5f21c33c..16909fc4a17 100644
--- a/pkg/compiler/test/inference/data/mixin_constructor_default_parameter_values/lib.dart
+++ b/pkg/compiler/test/inference/data/mixin_constructor_default_parameter_values/lib.dart
@@ -26,7 +26,7 @@ class C {
 
   /*member: C.b:[exact=C]*/
   C.b(int /*[exact=JSUInt31]*/ x,
-      {var /*Union([exact=JSString], [exact=_SECRET])*/ b: const _SECRET()})
+      {var /*Union([exact=JSString], [exact=_SECRET])*/ b = const _SECRET()})
       : this.x = x,
         this.y = b;
 
diff --git a/pkg/compiler/test/inference/data/static.dart b/pkg/compiler/test/inference/data/static.dart
index c9e4c249344..4c1ecca60c9 100644
--- a/pkg/compiler/test/inference/data/static.dart
+++ b/pkg/compiler/test/inference/data/static.dart
@@ -147,7 +147,7 @@ _returnDefaultZeroCalled([/*[exact=JSNumNotInt]*/ a = 0]) => a;
 staticCallWithNamedArguments1() => _returnNamedDefaultZero();
 
 /*member: _returnNamedDefaultZero:[exact=JSUInt31]*/
-_returnNamedDefaultZero({/*[exact=JSUInt31]*/ a: 0}) => a;
+_returnNamedDefaultZero({/*[exact=JSUInt31]*/ a = 0}) => a;
 
 ////////////////////////////////////////////////////////////////////////////////
 /// A static method that has a named parameter with a default value of `0`.
@@ -158,7 +158,7 @@ _returnNamedDefaultZero({/*[exact=JSUInt31]*/ a: 0}) => a;
 staticCallWithNamedArguments2() => _returnNamedDefaultZeroCalled(a: 0.5);
 
 /*member: _returnNamedDefaultZeroCalled:[exact=JSNumNotInt]*/
-_returnNamedDefaultZeroCalled({/*[exact=JSNumNotInt]*/ a: 0}) => a;
+_returnNamedDefaultZeroCalled({/*[exact=JSNumNotInt]*/ a = 0}) => a;
 
 ////////////////////////////////////////////////////////////////////////////////
 /// A static method that has a named parameter. Two call sites, one with an
diff --git a/pkg/compiler/test/inference/inference_data_test.dart b/pkg/compiler/test/inference/inference_data_test.dart
index d550d3b0b15..d46aea2d2ea 100644
--- a/pkg/compiler/test/inference/inference_data_test.dart
+++ b/pkg/compiler/test/inference/inference_data_test.dart
@@ -44,7 +44,7 @@ class InferenceDataComputer extends DataComputer<String> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     MemberDefinition definition = elementMap.getMemberDefinition(member);
diff --git a/pkg/compiler/test/inference/inference_test_helper.dart b/pkg/compiler/test/inference/inference_test_helper.dart
index d1374d6a410..4898ad92dda 100644
--- a/pkg/compiler/test/inference/inference_test_helper.dart
+++ b/pkg/compiler/test/inference/inference_test_helper.dart
@@ -48,7 +48,7 @@ class TypeMaskDataComputer extends DataComputer<String> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     GlobalTypeInferenceResults results =
diff --git a/pkg/compiler/test/inference/load_deferred_library_test.dart b/pkg/compiler/test/inference/load_deferred_library_test.dart
index 8596c414e84..b8938639fc3 100644
--- a/pkg/compiler/test/inference/load_deferred_library_test.dart
+++ b/pkg/compiler/test/inference/load_deferred_library_test.dart
@@ -37,7 +37,7 @@ main() async {
   });
 }
 
-runTest(List<String> options, {bool trust: true}) async {
+runTest(List<String> options, {bool trust = true}) async {
   CompilationResult result = await runCompiler(
       memorySourceFiles: {'main.dart': source}, options: options);
   Expect.isTrue(result.isSuccess);
diff --git a/pkg/compiler/test/inference/side_effects_test.dart b/pkg/compiler/test/inference/side_effects_test.dart
index 53a8d48ddc6..1ad063177ac 100644
--- a/pkg/compiler/test/inference/side_effects_test.dart
+++ b/pkg/compiler/test/inference/side_effects_test.dart
@@ -37,7 +37,7 @@ class SideEffectsDataComputer extends DataComputer<String> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     MemberDefinition definition = elementMap.getMemberDefinition(member);
diff --git a/pkg/compiler/test/inference/type_mask_disjoint_test.dart b/pkg/compiler/test/inference/type_mask_disjoint_test.dart
index bff1090cce4..265b221c1b0 100644
--- a/pkg/compiler/test/inference/type_mask_disjoint_test.dart
+++ b/pkg/compiler/test/inference/type_mask_disjoint_test.dart
@@ -54,7 +54,7 @@ main() {
     /// Checks the expectation of `isDisjoint` for two mask. Also checks that
     /// the result is consistent with an equivalent (but slower) implementation
     /// based on intersection.
-    checkMask(TypeMask m1, TypeMask m2, {areDisjoint: false}) {
+    checkMask(TypeMask m1, TypeMask m2, {areDisjoint = false}) {
       print('masks: $m1 $m2');
       Expect.equals(areDisjoint, m1.isDisjoint(m2, world));
       Expect.equals(areDisjoint, m2.isDisjoint(m1, world));
@@ -116,14 +116,14 @@ main() {
     /// Checks the expectation of `isDisjoint` for two mask descriptors (see
     /// [maskOf] for details).
     check(String typeMaskDescriptor1, String typeMaskDescriptor2,
-        {areDisjoint: true}) {
+        {areDisjoint = true}) {
       print('[$typeMaskDescriptor1] & [$typeMaskDescriptor2]');
       checkMask(maskOf(typeMaskDescriptor1), maskOf(typeMaskDescriptor2),
           areDisjoint: areDisjoint);
     }
 
     checkUnions(List<String> descriptors1, List<String> descriptors2,
-        {areDisjoint: true}) {
+        {areDisjoint = true}) {
       print('[$descriptors1] & [$descriptors2]');
       var m1 =
           new TypeMask.unionOf(descriptors1.map(maskOf).toList(), commonMasks);
diff --git a/pkg/compiler/test/inference/type_mask_test_helper.dart b/pkg/compiler/test/inference/type_mask_test_helper.dart
index 8eb0171e288..eb242368e7a 100644
--- a/pkg/compiler/test/inference/type_mask_test_helper.dart
+++ b/pkg/compiler/test/inference/type_mask_test_helper.dart
@@ -25,7 +25,7 @@ AbstractValue simplify(AbstractValue value, AbstractValueDomain domain) {
 }
 
 TypeMask interceptorOrComparable(JClosedWorld closedWorld,
-    {bool nullable: false}) {
+    {bool nullable = false}) {
   // TODO(johnniwinther): The mock libraries are missing 'Comparable' and
   // therefore consider the union of for instance 'String' and 'num' to be
   // 'Interceptor' and not 'Comparable'. Maybe the union mask should be changed
diff --git a/pkg/compiler/test/inlining/inlining_test.dart b/pkg/compiler/test/inlining/inlining_test.dart
index 5ad203a8ee3..f93ffd38e4c 100644
--- a/pkg/compiler/test/inlining/inlining_test.dart
+++ b/pkg/compiler/test/inlining/inlining_test.dart
@@ -36,7 +36,7 @@ class InliningDataComputer extends DataComputer<String> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     MemberDefinition definition = elementMap.getMemberDefinition(member);
diff --git a/pkg/compiler/test/inlining/meta_annotations_test.dart b/pkg/compiler/test/inlining/meta_annotations_test.dart
index e13070d0f7e..694ac43ac5e 100644
--- a/pkg/compiler/test/inlining/meta_annotations_test.dart
+++ b/pkg/compiler/test/inlining/meta_annotations_test.dart
@@ -43,7 +43,7 @@ main() {
     Expect.isFalse(compiler.compilationFailed, 'Unsuccessful compilation');
 
     void test(String name,
-        {bool expectNoInline: false, bool expectTryInline: false}) {
+        {bool expectNoInline = false, bool expectTryInline = false}) {
       LibraryEntity mainLibrary = elementEnvironment.mainLibrary;
       FunctionEntity method =
           elementEnvironment.lookupLibraryMember(mainLibrary, name);
diff --git a/pkg/compiler/test/js/js_safety_test.dart b/pkg/compiler/test/js/js_safety_test.dart
index de3996f0d65..dac6ccbc910 100644
--- a/pkg/compiler/test/js/js_safety_test.dart
+++ b/pkg/compiler/test/js/js_safety_test.dart
@@ -8,7 +8,7 @@ import 'package:expect/expect.dart';
 import 'package:compiler/src/js/js.dart' as js;
 import 'package:compiler/src/js/placeholder_safety.dart';
 
-void test(String source, int expected, {List notNull: const []}) {
+void test(String source, int expected, {List notNull = const []}) {
   var predicate = (int pos) => !notNull.contains(pos);
   js.Template template = js.js.parseForeignJS(source);
   int actual = PlaceholderSafetyAnalysis.analyze(template.ast, predicate);
diff --git a/pkg/compiler/test/js/js_spec_string_test.dart b/pkg/compiler/test/js/js_spec_string_test.dart
index 8ae300ca69f..f44ef422294 100644
--- a/pkg/compiler/test/js/js_spec_string_test.dart
+++ b/pkg/compiler/test/js/js_spec_string_test.dart
@@ -52,7 +52,7 @@ void test(DartTypes dartTypes, String specString,
     NativeThrowBehavior expectedThrows,
     bool expectedNew,
     bool expectedGvn,
-    bool expectError: false}) {
+    bool expectError = false}) {
   List actualReturns = [];
   List actualCreates = [];
   SideEffects actualSideEffects;
@@ -91,7 +91,7 @@ void test(DartTypes dartTypes, String specString,
 }
 
 void testWithSideEffects(DartTypes dartTypes, String specString,
-    {List returns, List creates, bool expectError: false}) {
+    {List returns, List creates, bool expectError = false}) {
   void sideEffectsTest(String newSpecString, SideEffects expectedSideEffects,
       {bool sideEffectsExpectError}) {
     test(dartTypes, newSpecString,
diff --git a/pkg/compiler/test/jsinterop/declaration_test.dart b/pkg/compiler/test/jsinterop/declaration_test.dart
index 0e8b004c8ff..ee6b17915ed 100644
--- a/pkg/compiler/test/jsinterop/declaration_test.dart
+++ b/pkg/compiler/test/jsinterop/declaration_test.dart
@@ -377,13 +377,13 @@ class Test {
   final List<MessageKind> warnings;
 
   const Test(this.name, this._source,
-      {this.errors: const <MessageKind>[],
-      this.warnings: const <MessageKind>[]})
+      {this.errors = const <MessageKind>[],
+      this.warnings = const <MessageKind>[]})
       : _sources = null;
 
   const Test.multi(this.name, this._sources,
-      {this.errors: const <MessageKind>[],
-      this.warnings: const <MessageKind>[]})
+      {this.errors = const <MessageKind>[],
+      this.warnings = const <MessageKind>[]})
       : _source = null;
 
   String get source => _source ?? _sources['main.dart'];
diff --git a/pkg/compiler/test/jsinterop/internal_annotations_test.dart b/pkg/compiler/test/jsinterop/internal_annotations_test.dart
index 861aaf1c8fd..ebc43fec4aa 100644
--- a/pkg/compiler/test/jsinterop/internal_annotations_test.dart
+++ b/pkg/compiler/test/jsinterop/internal_annotations_test.dart
@@ -28,9 +28,9 @@ void main() {
 
 testClasses(String import1, String import2) async {
   test(String mainSource,
-      {List<String> directlyInstantiated: const <String>[],
-      List<String> abstractlyInstantiated: const <String>[],
-      List<String> indirectlyInstantiated: const <String>[]}) async {
+      {List<String> directlyInstantiated = const <String>[],
+      List<String> abstractlyInstantiated = const <String>[],
+      List<String> indirectlyInstantiated = const <String>[]}) async {
     String mainFile = 'sdk/tests/web_2/native/main.dart';
     Uri entryPoint = Uri.parse('memory:$mainFile');
     CompilationResult result =
diff --git a/pkg/compiler/test/jsinterop/world_test.dart b/pkg/compiler/test/jsinterop/world_test.dart
index e1294d9e59f..b1b777ca83b 100644
--- a/pkg/compiler/test/jsinterop/world_test.dart
+++ b/pkg/compiler/test/jsinterop/world_test.dart
@@ -26,9 +26,9 @@ void main() {
 
 testClasses() async {
   test(String mainSource,
-      {List<String> directlyInstantiated: const <String>[],
-      List<String> abstractlyInstantiated: const <String>[],
-      List<String> indirectlyInstantiated: const <String>[]}) async {
+      {List<String> directlyInstantiated = const <String>[],
+      List<String> abstractlyInstantiated = const <String>[],
+      List<String> indirectlyInstantiated = const <String>[]}) async {
     CompilationResult result = await runCompiler(memorySourceFiles: {
       'main.dart': """
 import 'package:js/js.dart';
diff --git a/pkg/compiler/test/jumps/jump_test.dart b/pkg/compiler/test/jumps/jump_test.dart
index e483cba2506..4e90329709c 100644
--- a/pkg/compiler/test/jumps/jump_test.dart
+++ b/pkg/compiler/test/jumps/jump_test.dart
@@ -35,7 +35,7 @@ class JumpDataComputer extends DataComputer<String> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     GlobalLocalsMap localsMap =
diff --git a/pkg/compiler/test/member_usage/member_usage_test.dart b/pkg/compiler/test/member_usage/member_usage_test.dart
index 0134f0182e9..6d48c0058db 100644
--- a/pkg/compiler/test/member_usage/member_usage_test.dart
+++ b/pkg/compiler/test/member_usage/member_usage_test.dart
@@ -79,7 +79,7 @@ class ClosedWorldDataComputer extends DataComputer<Features> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<Features>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     KernelFrontendStrategy frontendStrategy = compiler.frontendStrategy;
     ResolutionWorldBuilder resolutionWorldBuilder =
         compiler.resolutionWorldBuilderForTesting;
diff --git a/pkg/compiler/test/model/call_structure_namer_test.dart b/pkg/compiler/test/model/call_structure_namer_test.dart
index 4bc9a7b4fc9..a7637011ff4 100644
--- a/pkg/compiler/test/model/call_structure_namer_test.dart
+++ b/pkg/compiler/test/model/call_structure_namer_test.dart
@@ -12,9 +12,9 @@ import 'package:expect/expect.dart';
 main() {
   asyncTest(() async {
     test(List<String> expectedSuffixes,
-        {int positionalParameters: 0,
-        int typeParameters: 0,
-        List<String> namedParameters: const <String>[]}) {
+        {int positionalParameters = 0,
+        int typeParameters = 0,
+        List<String> namedParameters = const <String>[]}) {
       CallStructure callStructure = new CallStructure(
           positionalParameters + namedParameters.length,
           namedParameters,
diff --git a/pkg/compiler/test/model/cfe_constant_test.dart b/pkg/compiler/test/model/cfe_constant_test.dart
index d4ab111ab7a..621bab0ef04 100644
--- a/pkg/compiler/test/model/cfe_constant_test.dart
+++ b/pkg/compiler/test/model/cfe_constant_test.dart
@@ -47,7 +47,7 @@ class ConstantDataComputer extends DataComputer<String> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     KernelFrontendStrategy frontendStrategy = compiler.frontendStrategy;
     KernelToElementMap elementMap = frontendStrategy.elementMap;
     ir.Member node = elementMap.getMemberNode(member);
diff --git a/pkg/compiler/test/model/class_set_test.dart b/pkg/compiler/test/model/class_set_test.dart
index b5614fb3aa7..f383a0302b3 100644
--- a/pkg/compiler/test/model/class_set_test.dart
+++ b/pkg/compiler/test/model/class_set_test.dart
@@ -65,7 +65,8 @@ testIterators() async {
   ClassEntity G = env.getClass("G");
 
   void checkClass(ClassEntity cls,
-      {bool directlyInstantiated: false, bool indirectlyInstantiated: false}) {
+      {bool directlyInstantiated = false,
+      bool indirectlyInstantiated = false}) {
     ClassHierarchyNode node = world.classHierarchy.getClassHierarchyNode(cls);
     Expect.isNotNull(node, "Expected ClassHierarchyNode for $cls.");
     Expect.equals(
@@ -420,8 +421,8 @@ testForEach() async {
 
   void checkForEach(ClassEntity cls, List<ClassEntity> expected,
       {ClassEntity stop,
-      List<ClassEntity> skipSubclasses: const <ClassEntity>[],
-      bool forEachSubtype: false,
+      List<ClassEntity> skipSubclasses = const <ClassEntity>[],
+      bool forEachSubtype = false,
       EnumSet<Instantiation> mask}) {
     if (mask == null) {
       mask = ClassHierarchyNode.ALL;
@@ -483,7 +484,7 @@ testForEach() async {
       forEachSubtype: true, mask: ClassHierarchyNode.INSTANTIATED);
 
   void checkAny(ClassEntity cls, List<ClassEntity> expected,
-      {ClassEntity find, bool expectedResult, bool anySubtype: false}) {
+      {ClassEntity find, bool expectedResult, bool anySubtype = false}) {
     ClassSet classSet = world.classHierarchy.getClassSet(cls);
     List<ClassEntity> visited = <ClassEntity>[];
 
@@ -551,7 +552,7 @@ testClosures() async {
   ClassEntity closureClass = world.commonElements.closureClass;
   ClassEntity A = env.getClass("A");
 
-  checkIsFunction(ClassEntity cls, {bool expected: true}) {
+  checkIsFunction(ClassEntity cls, {bool expected = true}) {
     Expect.equals(
         expected,
         world.classHierarchy.isSubtypeOf(cls, functionClass),
diff --git a/pkg/compiler/test/model/native_test.dart b/pkg/compiler/test/model/native_test.dart
index 4ce0a28c17e..dc199a584ce 100644
--- a/pkg/compiler/test/model/native_test.dart
+++ b/pkg/compiler/test/model/native_test.dart
@@ -206,7 +206,7 @@ main() {
 }
 
 runTest(String fileName, String location, Map<String, Kind> expectations,
-    {List<String> skipList: const <String>[]}) async {
+    {List<String> skipList = const <String>[]}) async {
   print('--------------------------------------------------------------------');
   print('Testing $fileName');
   print('--------------------------------------------------------------------');
@@ -261,7 +261,7 @@ runPositiveTest(Uri entryPoint, Map<String, String> sources,
   ElementEnvironment elementEnvironment = closedWorld.elementEnvironment;
 
   void checkClass(ClassEntity cls,
-      {bool isNative: false, bool isJsInterop: false}) {
+      {bool isNative = false, bool isJsInterop = false}) {
     if (isJsInterop) {
       isNative = true;
     }
@@ -276,7 +276,7 @@ runPositiveTest(Uri entryPoint, Map<String, String> sources,
   }
 
   void checkMember(MemberEntity member,
-      {bool isNative: false, bool isJsInterop: false}) {
+      {bool isNative = false, bool isJsInterop = false}) {
     if (isJsInterop) {
       isNative = true;
     }
diff --git a/pkg/compiler/test/model/no_such_method_enabled_test.dart b/pkg/compiler/test/model/no_such_method_enabled_test.dart
index f60c2535bf5..86cc15e64c1 100644
--- a/pkg/compiler/test/model/no_such_method_enabled_test.dart
+++ b/pkg/compiler/test/model/no_such_method_enabled_test.dart
@@ -27,13 +27,13 @@ class NoSuchMethodInfo {
 
   const NoSuchMethodInfo(this.className,
       {this.superClassName,
-      this.hasThrowingSyntax: false,
-      this.hasForwardingSyntax: false,
-      this.isThrowing: false,
-      this.isDefault: false,
-      this.isOther: false,
-      this.isComplexNoReturn: false,
-      this.isComplexReturn: false});
+      this.hasThrowingSyntax = false,
+      this.hasForwardingSyntax = false,
+      this.isThrowing = false,
+      this.isDefault = false,
+      this.isOther = false,
+      this.isComplexNoReturn = false,
+      this.isComplexReturn = false});
 }
 
 class NoSuchMethodTest {
@@ -42,7 +42,7 @@ class NoSuchMethodTest {
   final bool isNoSuchMethodUsed;
 
   const NoSuchMethodTest(this.code, this.methods,
-      {this.isNoSuchMethodUsed: false});
+      {this.isNoSuchMethodUsed = false});
 }
 
 const List<NoSuchMethodTest> TESTS = const <NoSuchMethodTest>[
diff --git a/pkg/compiler/test/model/no_such_method_forwarders_test.dart b/pkg/compiler/test/model/no_such_method_forwarders_test.dart
index ae719aa65b0..50d07e45e62 100644
--- a/pkg/compiler/test/model/no_such_method_forwarders_test.dart
+++ b/pkg/compiler/test/model/no_such_method_forwarders_test.dart
@@ -114,7 +114,7 @@ main() {
     JClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
 
     void check(String className,
-        {bool hasMethod, bool isAbstract: false, String declaringClass}) {
+        {bool hasMethod, bool isAbstract = false, String declaringClass}) {
       MemberEntity member =
           findClassMember(closedWorld, className, 'method', required: false);
       if (hasMethod) {
diff --git a/pkg/compiler/test/model/strong_mode_impact_test.dart b/pkg/compiler/test/model/strong_mode_impact_test.dart
index 558f0af6f6e..e17bf87d36a 100644
--- a/pkg/compiler/test/model/strong_mode_impact_test.dart
+++ b/pkg/compiler/test/model/strong_mode_impact_test.dart
@@ -142,10 +142,10 @@ class Impact {
   final List<String> parameterChecks;
 
   const Impact(
-      {this.checkedModeChecks: const <String>[],
-      this.asCasts: const <String>[],
-      this.implicitCasts: const <String>[],
-      this.parameterChecks: const <String>[]});
+      {this.checkedModeChecks = const <String>[],
+      this.asCasts = const <String>[],
+      this.implicitCasts = const <String>[],
+      this.parameterChecks = const <String>[]});
 
   @override
   String toString() {
diff --git a/pkg/compiler/test/model/subtypeset_test.dart b/pkg/compiler/test/model/subtypeset_test.dart
index dca3abe87fe..a3a3b86d079 100644
--- a/pkg/compiler/test/model/subtypeset_test.dart
+++ b/pkg/compiler/test/model/subtypeset_test.dart
@@ -22,7 +22,7 @@ void main() {
   });
 }
 
-runTests({bool strongMode: false}) async {
+runTests({bool strongMode = false}) async {
   var env = await TypeEnvironment.create(r"""
       ///        A
       ///       / \
@@ -65,7 +65,7 @@ runTests({bool strongMode: false}) async {
   ClassEntity Function_ = env.getElement("Function");
 
   void checkClass(ClassEntity cls, List<ClassEntity> expectedSubtypes,
-      {bool checkSubset: false}) {
+      {bool checkSubset = false}) {
     ClassSet node = world.classHierarchy.getClassSet(cls);
     Set<ClassEntity> actualSubtypes = node.subtypes().toSet();
     if (checkSubset) {
diff --git a/pkg/compiler/test/model/world_test.dart b/pkg/compiler/test/model/world_test.dart
index ce5f4cc3be8..9d36aea3c1d 100644
--- a/pkg/compiler/test/model/world_test.dart
+++ b/pkg/compiler/test/model/world_test.dart
@@ -71,7 +71,7 @@ testClassSets() async {
 
   void checkClasses(String property, ClassEntity cls,
       Iterable<ClassEntity> foundClasses, List<ClassEntity> expectedClasses,
-      {bool exact: true}) {
+      {bool exact = true}) {
     for (ClassEntity expectedClass in expectedClasses) {
       Expect.isTrue(
           foundClasses.contains(expectedClass),
@@ -92,7 +92,7 @@ testClassSets() async {
 
   void check(String property, ClassEntity cls,
       Iterable<ClassEntity> foundClasses, List<ClassEntity> expectedClasses,
-      {bool exact: true,
+      {bool exact = true,
       void forEach(ClassEntity cls, ForEachFunction f),
       int getCount(ClassEntity cls)}) {
     checkClasses(property, cls, foundClasses, expectedClasses, exact: exact);
@@ -118,14 +118,14 @@ testClassSets() async {
   }
 
   void testSubclasses(ClassEntity cls, List<ClassEntity> expectedClasses,
-      {bool exact: true}) {
+      {bool exact = true}) {
     check('subclassesOf', cls, closedWorld.classHierarchy.subclassesOf(cls),
         expectedClasses,
         exact: exact);
   }
 
   void testStrictSubclasses(ClassEntity cls, List<ClassEntity> expectedClasses,
-      {bool exact: true}) {
+      {bool exact = true}) {
     check('strictSubclassesOf', cls,
         closedWorld.classHierarchy.strictSubclassesOf(cls), expectedClasses,
         exact: exact,
@@ -134,7 +134,7 @@ testClassSets() async {
   }
 
   void testStrictSubtypes(ClassEntity cls, List<ClassEntity> expectedClasses,
-      {bool exact: true}) {
+      {bool exact = true}) {
     check('strictSubtypesOf', cls,
         closedWorld.classHierarchy.strictSubtypesOf(cls), expectedClasses,
         exact: exact,
@@ -143,7 +143,7 @@ testClassSets() async {
   }
 
   void testMixinUses(ClassEntity cls, List<ClassEntity> expectedClasses,
-      {bool exact: true}) {
+      {bool exact = true}) {
     check('mixinUsesOf', cls, closedWorld.mixinUsesOf(cls), expectedClasses,
         exact: exact);
   }
@@ -365,8 +365,8 @@ testNativeClasses() async {
       ClassEntity lubOfInstantiatedSubtypes,
       int instantiatedSubclassCount,
       int instantiatedSubtypeCount,
-      List<ClassEntity> subclasses: const <ClassEntity>[],
-      List<ClassEntity> subtypes: const <ClassEntity>[]}) {
+      List<ClassEntity> subclasses = const <ClassEntity>[],
+      List<ClassEntity> subtypes = const <ClassEntity>[]}) {
     ClassSet classSet = closedWorld.classHierarchy.getClassSet(cls);
     ClassHierarchyNode node = classSet.node;
 
diff --git a/pkg/compiler/test/optimization/optimization_test.dart b/pkg/compiler/test/optimization/optimization_test.dart
index 0efa7aeb1f8..7cccee14deb 100644
--- a/pkg/compiler/test/optimization/optimization_test.dart
+++ b/pkg/compiler/test/optimization/optimization_test.dart
@@ -33,7 +33,7 @@ class OptimizationDataValidator
     implements DataInterpreter<OptimizationTestLog> {
   final bool strict;
 
-  const OptimizationDataValidator({this.strict: false});
+  const OptimizationDataValidator({this.strict = false});
 
   @override
   String getText(OptimizationTestLog actualData, [String indentation]) {
@@ -129,7 +129,7 @@ class OptimizationDataValidator
 class OptimizationDataComputer extends DataComputer<OptimizationTestLog> {
   final bool strict;
 
-  const OptimizationDataComputer({this.strict: false});
+  const OptimizationDataComputer({this.strict = false});
 
   /// Compute type inference data for [member] from kernel based inference.
   ///
@@ -137,7 +137,7 @@ class OptimizationDataComputer extends DataComputer<OptimizationTestLog> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<OptimizationTestLog>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     MemberDefinition definition = elementMap.getMemberDefinition(member);
diff --git a/pkg/compiler/test/rti/rti_emission_test_helper.dart b/pkg/compiler/test/rti/rti_emission_test_helper.dart
index e48496179aa..b69ed35fea9 100644
--- a/pkg/compiler/test/rti/rti_emission_test_helper.dart
+++ b/pkg/compiler/test/rti/rti_emission_test_helper.dart
@@ -115,7 +115,7 @@ class RtiEmissionDataComputer extends DataComputer<String> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     MemberDefinition definition = elementMap.getMemberDefinition(member);
@@ -127,7 +127,7 @@ class RtiEmissionDataComputer extends DataComputer<String> {
   @override
   void computeClassData(
       Compiler compiler, ClassEntity cls, Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     new RtiEmissionIrComputer(compiler.reporter, actualMap, elementMap,
diff --git a/pkg/compiler/test/rti/rti_need_test_helper.dart b/pkg/compiler/test/rti/rti_need_test_helper.dart
index d53fcf864ef..ba9b082b186 100644
--- a/pkg/compiler/test/rti/rti_need_test_helper.dart
+++ b/pkg/compiler/test/rti/rti_need_test_helper.dart
@@ -246,7 +246,7 @@ class RtiNeedDataComputer extends DataComputer<String> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     MemberDefinition definition = elementMap.getMemberDefinition(member);
@@ -261,7 +261,7 @@ class RtiNeedDataComputer extends DataComputer<String> {
   @override
   void computeClassData(
       Compiler compiler, ClassEntity cls, Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     JsClosedWorld closedWorld = compiler.backendClosedWorldForTesting;
     JsToElementMap elementMap = closedWorld.elementMap;
     new RtiNeedIrComputer(compiler.reporter, actualMap, elementMap, compiler,
diff --git a/pkg/compiler/test/serialization/serialization_test.dart b/pkg/compiler/test/serialization/serialization_test.dart
index 3b052f52e17..1e7a2361564 100644
--- a/pkg/compiler/test/serialization/serialization_test.dart
+++ b/pkg/compiler/test/serialization/serialization_test.dart
@@ -20,12 +20,12 @@ main(List<String> args) {
 }
 
 Future checkTests(Directory dataDir,
-    {List<String> options: const <String>[],
-    List<String> args: const <String>[],
-    Directory libDirectory: null,
-    bool forUserLibrariesOnly: true,
-    int shards: 1,
-    int shardIndex: 0,
+    {List<String> options = const <String>[],
+    List<String> args = const <String>[],
+    Directory libDirectory = null,
+    bool forUserLibrariesOnly = true,
+    int shards = 1,
+    int shardIndex = 0,
     void onTest(Uri uri)}) async {
   args = args.toList();
   bool shouldContinue = args.remove('-c');
diff --git a/pkg/compiler/test/serialization/serialization_test_helper.dart b/pkg/compiler/test/serialization/serialization_test_helper.dart
index 6b86a6054f8..6f29c456f4a 100644
--- a/pkg/compiler/test/serialization/serialization_test_helper.dart
+++ b/pkg/compiler/test/serialization/serialization_test_helper.dart
@@ -102,12 +102,12 @@ void finishCompileAndCompare(
 
 runTest(
     {Uri entryPoint,
-    Map<String, String> memorySourceFiles: const <String, String>{},
+    Map<String, String> memorySourceFiles = const <String, String>{},
     Uri packageConfig,
     Uri librariesSpecificationUri,
     List<String> options,
-    SerializationStrategy strategy: const BytesInMemorySerializationStrategy(),
-    bool useDataKinds: false}) async {
+    SerializationStrategy strategy = const BytesInMemorySerializationStrategy(),
+    bool useDataKinds = false}) async {
   var commonOptions = options + ['--out=out.js'];
   OutputCollector collector = new OutputCollector();
   CompilationResult result = await runCompiler(
diff --git a/pkg/compiler/test/sourcemaps/helpers/html_parts.dart b/pkg/compiler/test/sourcemaps/helpers/html_parts.dart
index eae6992144b..8b46027e26a 100644
--- a/pkg/compiler/test/sourcemaps/helpers/html_parts.dart
+++ b/pkg/compiler/test/sourcemaps/helpers/html_parts.dart
@@ -28,7 +28,8 @@ class LineData {
   final String lineClass;
   final String lineNumberClass;
 
-  const LineData({this.lineClass: 'line', this.lineNumberClass: 'lineNumber'});
+  const LineData(
+      {this.lineClass = 'line', this.lineNumberClass = 'lineNumber'});
 }
 
 class AnnotationData {
@@ -36,7 +37,7 @@ class AnnotationData {
   final Map<String, String> properties;
 
   const AnnotationData(
-      {this.tag: 'a', this.properties: const <String, String>{}});
+      {this.tag = 'a', this.properties = const <String, String>{}});
 
   @override
   int get hashCode => tag.hashCode * 13 + properties.hashCode * 19;
@@ -52,8 +53,8 @@ class AnnotationData {
 }
 
 AnnotationDataFunction createAnnotationDataFunction(
-    {CssColorScheme colorScheme: const SingleColorScheme(),
-    ElementScheme elementScheme: const ElementScheme()}) {
+    {CssColorScheme colorScheme = const SingleColorScheme(),
+    ElementScheme elementScheme = const ElementScheme()}) {
   return (Iterable<Annotation> annotations, {bool forSpan}) {
     return getAnnotationDataFromSchemes(annotations,
         forSpan: forSpan,
@@ -66,8 +67,8 @@ LineData getDefaultLineData(data) => const LineData();
 
 AnnotationData getAnnotationDataFromSchemes(Iterable<Annotation> annotations,
     {bool forSpan,
-    CssColorScheme colorScheme: const SingleColorScheme(),
-    ElementScheme elementScheme: const ElementScheme()}) {
+    CssColorScheme colorScheme = const SingleColorScheme(),
+    ElementScheme elementScheme = const ElementScheme()}) {
   if (colorScheme.showLocationAsSpan != forSpan) return null;
   Map<String, String> data = <String, String>{};
   var id;
@@ -108,10 +109,10 @@ class HtmlPrintContext {
 
   HtmlPrintContext(
       {this.lineNoWidth,
-      this.usePre: true,
-      this.includeAnnotation: includeAllAnnotation,
-      this.getAnnotationData: getAnnotationDataFromSchemes,
-      this.getLineData: getDefaultLineData});
+      this.usePre = true,
+      this.includeAnnotation = includeAllAnnotation,
+      this.getAnnotationData = getAnnotationDataFromSchemes,
+      this.getLineData = getDefaultLineData});
 
   HtmlPrintContext from(
       {int lineNoWidth,
@@ -244,8 +245,8 @@ class TagPart implements HtmlPart {
   final List<HtmlPart> content;
 
   TagPart(this.tag,
-      {this.properties: const <String, String>{},
-      this.content: const <HtmlPart>[]});
+      {this.properties = const <String, String>{},
+      this.content = const <HtmlPart>[]});
 
   @override
   HtmlPartKind get kind => HtmlPartKind.TAG;
diff --git a/pkg/compiler/test/sourcemaps/helpers/output_structure.dart b/pkg/compiler/test/sourcemaps/helpers/output_structure.dart
index f2f33b81f92..c8da54da5c9 100644
--- a/pkg/compiler/test/sourcemaps/helpers/output_structure.dart
+++ b/pkg/compiler/test/sourcemaps/helpers/output_structure.dart
@@ -679,7 +679,7 @@ class Interval {
     return new Interval(Math.min(from, index), Math.max(to, index + 1));
   }
 
-  bool inWindow(int index, {int windowSize: 0}) {
+  bool inWindow(int index, {int windowSize = 0}) {
     return from - windowSize <= index && index < to + windowSize;
   }
 
diff --git a/pkg/compiler/test/sourcemaps/helpers/sourcemap_helper.dart b/pkg/compiler/test/sourcemaps/helpers/sourcemap_helper.dart
index 3d20d8e473d..ba0851d5561 100644
--- a/pkg/compiler/test/sourcemaps/helpers/sourcemap_helper.dart
+++ b/pkg/compiler/test/sourcemaps/helpers/sourcemap_helper.dart
@@ -164,7 +164,7 @@ class RecordingSourceMapper implements SourceMapper {
   }
 
   @override
-  void registerPop(int codeOffset, {bool isEmpty: false}) {
+  void registerPop(int codeOffset, {bool isEmpty = false}) {
     sourceMapper.registerPop(codeOffset, isEmpty: isEmpty);
   }
 }
@@ -320,7 +320,7 @@ class SourceMapProcessor {
   SourceFileManager sourceFileManager;
 
   /// Creates a processor for the Dart file [uri].
-  SourceMapProcessor(Uri uri, {this.outputToFile: false}) {
+  SourceMapProcessor(Uri uri, {this.outputToFile = false}) {
     inputUri = Uri.base.resolveUri(uri);
     jsPath = 'out.js';
     targetUri = Uri.base.resolve(jsPath);
@@ -329,7 +329,9 @@ class SourceMapProcessor {
 
   /// Computes the [SourceMapInfo] for the compiled elements.
   Future<SourceMaps> process(List<String> options,
-      {bool verbose: true, bool perElement: true, bool forMain: false}) async {
+      {bool verbose = true,
+      bool perElement = true,
+      bool forMain = false}) async {
     OutputProvider outputProvider = outputToFile
         ? new CloningOutputProvider(targetUri, sourceMapFileUri)
         : new OutputProvider();
@@ -478,7 +480,7 @@ class _LocationRecorder implements SourceMapper, LocationMap {
       String inlinedMethodName) {}
 
   @override
-  void registerPop(int codeOffset, {bool isEmpty: false}) {}
+  void registerPop(int codeOffset, {bool isEmpty = false}) {}
 
   @override
   Iterable<js.Node> get nodes => _nodeMap.keys;
@@ -539,7 +541,7 @@ class CodePointComputer extends TraceListener {
     register(kind, node);
   }
 
-  void register(StepKind kind, js.Node node, {bool expectInfo: true}) {
+  void register(StepKind kind, js.Node node, {bool expectInfo = true}) {
     String dartCodeFromSourceLocation(SourceLocation sourceLocation) {
       SourceFile sourceFile =
           sourceFileManager.getSourceFile(sourceLocation.sourceUri);
@@ -598,7 +600,7 @@ class CodePoint {
 
   CodePoint(this.kind, this.jsCode, this.targetOffset, this.sourceLocation,
       this.dartCode,
-      {this.isMissing: false});
+      {this.isMissing = false});
 
   @override
   String toString() {
diff --git a/pkg/compiler/test/sourcemaps/helpers/sourcemap_html_helper.dart b/pkg/compiler/test/sourcemaps/helpers/sourcemap_html_helper.dart
index 9f312d4e3e7..6fe713e8e23 100644
--- a/pkg/compiler/test/sourcemaps/helpers/sourcemap_html_helper.dart
+++ b/pkg/compiler/test/sourcemaps/helpers/sourcemap_html_helper.dart
@@ -56,7 +56,7 @@ String toPattern(int index) {
 /// Return the html for the [index] line number. If [width] is provided, shorter
 /// line numbers will be prefixed with spaces to match the width.
 String lineNumber(int index,
-    {int width, bool useNbsp: false, String className}) {
+    {int width, bool useNbsp = false, String className}) {
   if (className == null) {
     className = 'lineNumber';
   }
@@ -126,7 +126,7 @@ class CustomColorScheme implements CssColorScheme {
   final Function multi;
 
   CustomColorScheme(
-      {this.showLocationAsSpan: false,
+      {this.showLocationAsSpan = false,
       String this.single(int id),
       String this.multi(List<int> ids)});
 
@@ -211,7 +211,7 @@ class CodeProcessor {
   final CssColorScheme colorScheme;
 
   CodeProcessor(this.name, this.collection,
-      {this.colorScheme: const PatternCssColorScheme()});
+      {this.colorScheme = const PatternCssColorScheme()});
 
   void addSourceLocation(int targetOffset, SourceLocation sourceLocation) {
     codeLocations.putIfAbsent(targetOffset, () => []).add(sourceLocation);
@@ -278,8 +278,8 @@ class HighlightLinkScheme implements ElementScheme {
 }
 
 String convertAnnotatedCodeToHtml(String code, Iterable<Annotation> annotations,
-    {CssColorScheme colorScheme: const SingleColorScheme(),
-    ElementScheme elementScheme: const ElementScheme(),
+    {CssColorScheme colorScheme = const SingleColorScheme(),
+    ElementScheme elementScheme = const ElementScheme(),
     int windowSize}) {
   StringBuffer htmlBuffer = new StringBuffer();
   List<CodeLine> lines = convertAnnotatedCodeToCodeLines(code, annotations,
@@ -336,7 +336,7 @@ List<CodeLine> convertAnnotatedCodeToCodeLines(
     }
   }
 
-  void addSubstring(int until, {bool isFirst: false, bool isLast: false}) {
+  void addSubstring(int until, {bool isFirst = false, bool isLast = false}) {
     if (until <= offset) return;
     if (offset >= code.length) return;
 
@@ -491,7 +491,7 @@ String computeDartHtml(
 /// Computes the HTML representation for the Dart code snippets in [collection].
 String computeDartHtmlPart(String name, SourceFileManager sourceFileManager,
     SourceLocationCollection collection,
-    {bool showAsBlock: false}) {
+    {bool showAsBlock = false}) {
   const int windowSize = 3;
   StringBuffer dartCodeBuffer = new StringBuffer();
   Map<Uri, Map<int, List<SourceLocation>>> sourceLocationMap = {};
diff --git a/pkg/compiler/test/sourcemaps/mapping_test.dart b/pkg/compiler/test/sourcemaps/mapping_test.dart
index 53d0386a014..6b3e508b4db 100644
--- a/pkg/compiler/test/sourcemaps/mapping_test.dart
+++ b/pkg/compiler/test/sourcemaps/mapping_test.dart
@@ -97,7 +97,7 @@ void main(List<String> arguments) {
 }
 
 Future runTest(int index, Test test,
-    {bool printJs: false, bool writeJs, bool verbose: false}) async {
+    {bool printJs = false, bool writeJs, bool verbose = false}) async {
   print("--$index------------------------------------------------------------");
   print("Compiling dart2js\n ${test.annotatedCode}");
   OutputCollector collector = new OutputCollector();
diff --git a/pkg/compiler/test/sourcemaps/nomapping_test.dart b/pkg/compiler/test/sourcemaps/nomapping_test.dart
index dd41cca2808..1ee5eac625a 100644
--- a/pkg/compiler/test/sourcemaps/nomapping_test.dart
+++ b/pkg/compiler/test/sourcemaps/nomapping_test.dart
@@ -57,7 +57,7 @@ void main(List<String> arguments) {
 }
 
 Future runTest(int index, String code,
-    {bool writeJs, bool verbose: false, bool useNewSourceInfo: false}) async {
+    {bool writeJs, bool verbose = false, bool useNewSourceInfo = false}) async {
   print("--$index------------------------------------------------------------");
   print("Compiling dart2js ${useNewSourceInfo ? Flags.useNewSourceInfo : ''}\n"
       "${code}");
diff --git a/pkg/compiler/test/sourcemaps/stacktrace/parameters.dart b/pkg/compiler/test/sourcemaps/stacktrace/parameters.dart
index 9a85e70039a..4f694f2f55b 100644
--- a/pkg/compiler/test/sourcemaps/stacktrace/parameters.dart
+++ b/pkg/compiler/test/sourcemaps/stacktrace/parameters.dart
@@ -41,42 +41,42 @@ class Class {
 
   @pragma('dart2js:noInline')
   /*7:Class.instanceNamed1[function-entry$1]*/ instanceNamed1(a,
-      {b: 42, c: 87, d: 735}) {
+      {b = 42, c = 87, d = 735}) {
     print('instanceNamed1($a,b:$b,c:$c,d:$d)');
     /*8:Class.instanceNamed1*/ instanceNamed2(1, b: 2);
   }
 
   @pragma('dart2js:noInline')
   /*9:Class.instanceNamed2[function-entry$1$b]*/ instanceNamed2(a,
-      {b: 42, c: 87, d: 735}) {
+      {b = 42, c = 87, d = 735}) {
     print('instanceNamed2($a,b:$b,c:$c,d:$d)');
     /*10:Class.instanceNamed2*/ instanceNamed3(3, c: 123);
   }
 
   @pragma('dart2js:noInline')
   /*11:Class.instanceNamed3[function-entry$1$c]*/ instanceNamed3(a,
-      {b: 42, c: 87, d: 735}) {
+      {b = 42, c = 87, d = 735}) {
     print('instanceNamed3($a,b:$b,c:$c,d:$d)');
     /*12:Class.instanceNamed3*/ instanceNamed4(4, c: 45, b: 76);
   }
 
   @pragma('dart2js:noInline')
   /*13:Class.instanceNamed4[function-entry$1$b$c]*/ instanceNamed4(a,
-      {b: 42, c: 87, d: 735}) {
+      {b = 42, c = 87, d = 735}) {
     print('instanceNamed4($a,b:$b,c:$c,d:$d)');
     /*14:Class.instanceNamed4*/ instanceNamed5(5, c: 6, b: 7, d: 8);
   }
 
   @pragma('dart2js:noInline')
-  instanceNamed5(a, {b: 42, c: 87, d: 735}) {
+  instanceNamed5(a, {b = 42, c = 87, d = 735}) {
     print('instanceNamed5($a,b:$b,c:$c,d:$d)');
     /*18:Class.instanceNamed5[function-entry$0].local*/ local([e = 42]) {
       print('instanceNamed5.local($e)');
       /*19:Class.instanceNamed5.local*/ throw '>ExceptionMarker<';
     }
 
-    var anonymous = /*16:Class.instanceNamed5[function-entry$0].<anonymous function>*/ (
-        {f: 87}) {
+    var anonymous = /*16:Class.instanceNamed5[function-entry$0].<anonymous function>*/
+        ({f = 87}) {
       print('instanceNamed5.<anonymous(f:$f)');
       /*17:Class.instanceNamed5.<anonymous function>*/ local();
     };
diff --git a/pkg/compiler/test/sourcemaps/stacktrace/parameters_elided.dart b/pkg/compiler/test/sourcemaps/stacktrace/parameters_elided.dart
index 26b944d9afc..6ca87791b3a 100644
--- a/pkg/compiler/test/sourcemaps/stacktrace/parameters_elided.dart
+++ b/pkg/compiler/test/sourcemaps/stacktrace/parameters_elided.dart
@@ -29,39 +29,39 @@ class Class {
   }
 
   @pragma('dart2js:noInline')
-  instanceNamed1(a, {b: 42, c: 87, d: 735}) {
+  instanceNamed1(a, {b = 42, c = 87, d = 735}) {
     print('instanceNamed1($a,b:$b,c:$c,d:$d)');
     /*5:Class.instanceNamed1*/ instanceNamed2(1, b: 2);
   }
 
   @pragma('dart2js:noInline')
-  instanceNamed2(a, {b: 42, c: 87, d: 735}) {
+  instanceNamed2(a, {b = 42, c = 87, d = 735}) {
     print('instanceNamed2($a,b:$b,c:$c,d:$d)');
     /*6:Class.instanceNamed2*/ instanceNamed3(3, c: 123);
   }
 
   @pragma('dart2js:noInline')
-  instanceNamed3(a, {b: 42, c: 87, d: 735}) {
+  instanceNamed3(a, {b = 42, c = 87, d = 735}) {
     print('instanceNamed3($a,b:$b,c:$c,d:$d)');
     /*7:Class.instanceNamed3*/ instanceNamed4(4, c: 45, b: 76);
   }
 
   @pragma('dart2js:noInline')
-  instanceNamed4(a, {b: 42, c: 87, d: 735}) {
+  instanceNamed4(a, {b = 42, c = 87, d = 735}) {
     print('instanceNamed4($a,b:$b,c:$c,d:$d)');
     /*8:Class.instanceNamed4*/ instanceNamed5(5, c: 6, b: 7, d: 8);
   }
 
   @pragma('dart2js:noInline')
-  instanceNamed5(a, {b: 42, c: 87, d: 735}) {
+  instanceNamed5(a, {b = 42, c = 87, d = 735}) {
     print('instanceNamed5($a,b:$b,c:$c,d:$d)');
     /*12:Class.instanceNamed5[function-entry$0].local*/ local([e = 42]) {
       print('instanceNamed5.local($e)');
       /*13:Class.instanceNamed5.local*/ throw '>ExceptionMarker<';
     }
 
-    var anonymous = /*10:Class.instanceNamed5[function-entry$0].<anonymous function>*/ (
-        {f: 87}) {
+    var anonymous = /*10:Class.instanceNamed5[function-entry$0].<anonymous function>*/
+        ({f = 87}) {
       print('instanceNamed5.<anonymous(f:$f)');
       /*11:Class.instanceNamed5.<anonymous function>*/ local();
     };
diff --git a/pkg/compiler/test/sourcemaps/stacktrace_test.dart b/pkg/compiler/test/sourcemaps/stacktrace_test.dart
index 00ea52f6a3b..09c36373b92 100644
--- a/pkg/compiler/test/sourcemaps/stacktrace_test.dart
+++ b/pkg/compiler/test/sourcemaps/stacktrace_test.dart
@@ -54,10 +54,10 @@ void main(List<String> args) {
 const String kernelMarker = 'kernel.';
 
 Future testAnnotatedCode(String code,
-    {bool printJs: false,
-    bool writeJs: false,
-    bool verbose: false,
-    bool inlineData: false}) async {
+    {bool printJs = false,
+    bool writeJs = false,
+    bool verbose = false,
+    bool inlineData = false}) async {
   Test test = processTestCode(code, [kernelMarker]);
   print(test.code);
   print('---from kernel------------------------------------------------------');
@@ -69,11 +69,11 @@ Future testAnnotatedCode(String code,
 }
 
 Future runTest(Test test, String config,
-    {bool printJs: false,
-    bool writeJs: false,
-    bool verbose: false,
-    bool inlineData: false,
-    List<String> options: const <String>[]}) async {
+    {bool printJs = false,
+    bool writeJs = false,
+    bool verbose = false,
+    bool inlineData = false,
+    List<String> options = const <String>[]}) async {
   List<LineException> testAfterExceptions = <LineException>[];
   if (config == kernelMarker) {
     for (LineException exception in afterExceptions) {
diff --git a/pkg/compiler/test/sourcemaps/stepping_test.dart b/pkg/compiler/test/sourcemaps/stepping_test.dart
index c6a050426b3..8e86592ecb7 100644
--- a/pkg/compiler/test/sourcemaps/stepping_test.dart
+++ b/pkg/compiler/test/sourcemaps/stepping_test.dart
@@ -50,7 +50,7 @@ void main(List<String> args) {
 const String kernelMarker = 'kernel.';
 
 Future testAnnotatedCode(String code,
-    {bool debug: false, bool verbose: false}) async {
+    {bool debug = false, bool verbose = false}) async {
   AnnotatedCode annotatedCode =
       new AnnotatedCode.fromText(code, commentStart, commentEnd);
   print(annotatedCode.sourceCode);
@@ -62,9 +62,9 @@ Future testAnnotatedCode(String code,
 }
 
 Future runTest(AnnotatedCode annotatedCode, String config,
-    {bool debug: false,
-    bool verbose: false,
-    List<String> options: const <String>[]}) async {
+    {bool debug = false,
+    bool verbose = false,
+    List<String> options = const <String>[]}) async {
   Directory dir = Directory.systemTemp.createTempSync('stepping_test');
   String testFileName = 'test.dart';
   String path = dir.path;
diff --git a/pkg/compiler/test/sourcemaps/tools/diff_view.dart b/pkg/compiler/test/sourcemaps/tools/diff_view.dart
index ba9d49a51f7..72ad7620e60 100644
--- a/pkg/compiler/test/sourcemaps/tools/diff_view.dart
+++ b/pkg/compiler/test/sourcemaps/tools/diff_view.dart
@@ -207,7 +207,7 @@ class AnnotatedOutput {
 
 void outputDiffView(
     String out, List<AnnotatedOutput> outputs, List<DiffBlock> blocks,
-    {bool showMarkers: true, bool showSourceMapped: true}) {
+    {bool showMarkers = true, bool showSourceMapped = true}) {
   assert(outputs[0].filename == outputs[1].filename);
   bool usePre = true;
 
@@ -722,7 +722,7 @@ Future<CodeLinesResult> computeCodeLines(
   void addCodeLineAnnotation(
       {AnnotationType annotationType,
       int codeOffset,
-      List<SourceLocation> locations: const <SourceLocation>[],
+      List<SourceLocation> locations = const <SourceLocation>[],
       String stepInfo}) {
     if (annotationType == AnnotationType.WITHOUT_SOURCE_INFO ||
         annotationType == AnnotationType.UNUSED_SOURCE_INFO) {
diff --git a/pkg/compiler/test/sourcemaps/tools/source_mapping_test_viewer.dart b/pkg/compiler/test/sourcemaps/tools/source_mapping_test_viewer.dart
index 903a26039dd..5e9e70a7d58 100644
--- a/pkg/compiler/test/sourcemaps/tools/source_mapping_test_viewer.dart
+++ b/pkg/compiler/test/sourcemaps/tools/source_mapping_test_viewer.dart
@@ -123,7 +123,7 @@ class OutputConfigurations implements Configurations {
 
 Future<Measurement> runTest(
     String config, String filename, Uri uri, List<String> options,
-    {Uri outputUri, bool verbose, bool missingOnly: false}) async {
+    {Uri outputUri, bool verbose, bool missingOnly = false}) async {
   TestResult result =
       await runTests(config, filename, uri, options, verbose: verbose);
   if (outputUri != null) {
diff --git a/pkg/compiler/test/sourcemaps/tools/source_mapping_tester.dart b/pkg/compiler/test/sourcemaps/tools/source_mapping_tester.dart
index 8f5e582b883..1b6df6f5578 100644
--- a/pkg/compiler/test/sourcemaps/tools/source_mapping_tester.dart
+++ b/pkg/compiler/test/sourcemaps/tools/source_mapping_tester.dart
@@ -31,7 +31,7 @@ main(List<String> arguments) {
 }
 
 void test(List<String> arguments,
-    {WhiteListFunction whiteListFunction: emptyWhiteListFunction}) {
+    {WhiteListFunction whiteListFunction = emptyWhiteListFunction}) {
   Set<String> configurations = new Set<String>();
   Map<String, Uri> tests = <String, Uri>{};
   if (!parseArguments(arguments, configurations, tests)) {
@@ -72,7 +72,7 @@ void test(List<String> arguments,
 
 bool parseArguments(
     List<String> arguments, Set<String> configurations, Map<String, Uri> tests,
-    {bool measure: false}) {
+    {bool measure = false}) {
   Set<String> extra = arguments.contains('--file') ? new Set<String>() : null;
 
   for (String argument in arguments) {
@@ -151,7 +151,7 @@ Map<String, Uri> _computeTestFiles() {
 
 Future<TestResult> runTests(
     String config, String filename, Uri uri, List<String> options,
-    {bool verbose: true}) async {
+    {bool verbose = true}) async {
   SourceMapProcessor processor = new SourceMapProcessor(uri);
   SourceMaps sourceMaps = await processor
       .process(['--csp', Flags.disableInlining, ...options], verbose: verbose);
diff --git a/pkg/compiler/test/static_type/static_type_test.dart b/pkg/compiler/test/static_type/static_type_test.dart
index dcaea021bde..9f0cd983adf 100644
--- a/pkg/compiler/test/static_type/static_type_test.dart
+++ b/pkg/compiler/test/static_type/static_type_test.dart
@@ -50,7 +50,7 @@ class StaticTypeDataComputer extends DataComputer<String> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     KernelFrontendStrategy frontendStrategy = compiler.frontendStrategy;
     KernelToElementMap elementMap = frontendStrategy.elementMap;
     StaticTypeCache staticTypeCache = elementMap.getCachedStaticTypes(member);
diff --git a/pkg/compiler/test/static_type/type_promotion_test.dart b/pkg/compiler/test/static_type/type_promotion_test.dart
index c6ab8a82629..42931e4aeac 100644
--- a/pkg/compiler/test/static_type/type_promotion_test.dart
+++ b/pkg/compiler/test/static_type/type_promotion_test.dart
@@ -47,7 +47,7 @@ class TypePromotionDataComputer extends DataComputer<String> {
   @override
   void computeMemberData(Compiler compiler, MemberEntity member,
       Map<Id, ActualData<String>> actualMap,
-      {bool verbose: false}) {
+      {bool verbose = false}) {
     KernelFrontendStrategy frontendStrategy = compiler.frontendStrategy;
     KernelToElementMap elementMap = frontendStrategy.elementMap;
     Map<ir.Expression, TypeMap> typeMaps =
diff --git a/pkg/compiler/test/tool/graph_isomorphizer/graph_isomorphizer_test.dart b/pkg/compiler/test/tool/graph_isomorphizer/graph_isomorphizer_test.dart
index 921be6862f3..1e67ee5926f 100644
--- a/pkg/compiler/test/tool/graph_isomorphizer/graph_isomorphizer_test.dart
+++ b/pkg/compiler/test/tool/graph_isomorphizer/graph_isomorphizer_test.dart
@@ -48,7 +48,7 @@ void verifyGeneratedFile(
 }
 
 GraphIsomorphizer generateFiles(List<String> graphFileLines,
-    {String outDirectory: '.'}) {
+    {String outDirectory = '.'}) {
   Map<int, List<List<int>>> names = {};
   int maxBit = namesFromGraphFileLines(graphFileLines, names);
   var graphIsomorphizer =
diff --git a/pkg/compiler/tool/graph_isomorphizer.dart b/pkg/compiler/tool/graph_isomorphizer.dart
index 9859c61c6f5..75f6378ee1d 100644
--- a/pkg/compiler/tool/graph_isomorphizer.dart
+++ b/pkg/compiler/tool/graph_isomorphizer.dart
@@ -148,7 +148,9 @@ class GraphIsomorphizer {
   final bool simple;
 
   GraphIsomorphizer(this.names, this.maxBit,
-      {this.outDirectory: '.', this.skipCopyright: false, this.simple: false});
+      {this.outDirectory = '.',
+      this.skipCopyright = false,
+      this.simple = false});
 
   void noInlineDecorator(StringBuffer out) {
     out.write("@pragma('dart2js:noInline')\n");
@@ -371,7 +373,7 @@ class GraphIsomorphizer {
   /// Generates a string of bits, with optional parameters to control how the
   /// bits print.
   String generateBitString(List<int> bits,
-      {NameFunc f: passThroughNameFunc, bool withStops: true}) {
+      {NameFunc f = passThroughNameFunc, bool withStops = true}) {
     int stop = 0;
     StringBuffer sb = StringBuffer();
     for (int i = 0; i < bits.length; i++) {
diff --git a/pkg/compiler/tool/track_memory.dart b/pkg/compiler/tool/track_memory.dart
index f6b324b35a3..96908d1030b 100644
--- a/pkg/compiler/tool/track_memory.dart
+++ b/pkg/compiler/tool/track_memory.dart
@@ -168,7 +168,7 @@ _showProgress(newUsed, newCapacity, oldUsed, oldCapacity) {
 }
 
 const mega = 1024 * 1024;
-_writeNumber(sb, before, now, {color: false}) {
+_writeNumber(sb, before, now, {color = false}) {
   if (color)
     sb.write(before < now
         ? _RED
diff --git a/pkg/dart2wasm/lib/target.dart b/pkg/dart2wasm/lib/target.dart
index 68f24cbd8d1..6b1657af336 100644
--- a/pkg/dart2wasm/lib/target.dart
+++ b/pkg/dart2wasm/lib/target.dart
@@ -237,16 +237,16 @@ class WasmTarget extends Target {
 
   Expression instantiateNoSuchMethodError(CoreTypes coreTypes,
       Expression receiver, String name, Arguments arguments, int offset,
-      {bool isMethod: false,
-      bool isGetter: false,
-      bool isSetter: false,
-      bool isField: false,
-      bool isLocalVariable: false,
-      bool isDynamic: false,
-      bool isSuper: false,
-      bool isStatic: false,
-      bool isConstructor: false,
-      bool isTopLevel: false}) {
+      {bool isMethod = false,
+      bool isGetter = false,
+      bool isSetter = false,
+      bool isField = false,
+      bool isLocalVariable = false,
+      bool isDynamic = false,
+      bool isSuper = false,
+      bool isStatic = false,
+      bool isConstructor = false,
+      bool isTopLevel = false}) {
     return ConstructorInvocation(
         coreTypes.noSuchMethodErrorDefaultConstructor,
         Arguments(
diff --git a/pkg/front_end/lib/src/api_prototype/compiler_options.dart b/pkg/front_end/lib/src/api_prototype/compiler_options.dart
index c94d99825d6..b6a20b8b12b 100644
--- a/pkg/front_end/lib/src/api_prototype/compiler_options.dart
+++ b/pkg/front_end/lib/src/api_prototype/compiler_options.dart
@@ -302,10 +302,10 @@ class CompilerOptions {
   }
 
   bool equivalent(CompilerOptions other,
-      {bool ignoreOnDiagnostic: true,
-      bool ignoreVerbose: true,
-      bool ignoreVerify: true,
-      bool ignoreDebugDump: true}) {
+      {bool ignoreOnDiagnostic = true,
+      bool ignoreVerbose = true,
+      bool ignoreVerify = true,
+      bool ignoreDebugDump = true}) {
     if (sdkRoot != other.sdkRoot) return false;
     if (librariesSpecificationUri != other.librariesSpecificationUri) {
       return false;
@@ -541,7 +541,8 @@ class Verbosity {
   /// If [name] isn't recognized and [onError] isn't provided, an error is
   /// thrown.
   static Verbosity parseArgument(String name,
-      {void Function(String)? onError, Verbosity defaultValue: Verbosity.all}) {
+      {void Function(String)? onError,
+      Verbosity defaultValue = Verbosity.all}) {
     for (Verbosity verbosity in values) {
       if (name == verbosity.name) {
         return verbosity;
diff --git a/pkg/front_end/lib/src/api_prototype/experimental_flags.dart b/pkg/front_end/lib/src/api_prototype/experimental_flags.dart
index 2d2a63064f6..ff2a4245f66 100644
--- a/pkg/front_end/lib/src/api_prototype/experimental_flags.dart
+++ b/pkg/front_end/lib/src/api_prototype/experimental_flags.dart
@@ -24,9 +24,9 @@ class AllowedExperimentalFlags {
   final Map<String, Set<ExperimentalFlag>> packageExperiments;
 
   const AllowedExperimentalFlags({
-    this.sdkDefaultExperiments: const {},
-    this.sdkLibraryExperiments: const {},
-    this.packageExperiments: const {},
+    this.sdkDefaultExperiments = const {},
+    this.sdkLibraryExperiments = const {},
+    this.packageExperiments = const {},
   });
 
   /// Return the set of enabled experiments for the package with the [name],
diff --git a/pkg/front_end/lib/src/api_prototype/incremental_kernel_generator.dart b/pkg/front_end/lib/src/api_prototype/incremental_kernel_generator.dart
index 880d7647fbe..409cda3b505 100644
--- a/pkg/front_end/lib/src/api_prototype/incremental_kernel_generator.dart
+++ b/pkg/front_end/lib/src/api_prototype/incremental_kernel_generator.dart
@@ -76,8 +76,8 @@ abstract class IncrementalKernelGenerator {
   /// Component.
   Future<IncrementalCompilerResult> computeDelta(
       {List<Uri>? entryPoints,
-      bool fullComponent: false,
-      bool trackNeededDillLibraries: false});
+      bool fullComponent = false,
+      bool trackNeededDillLibraries = false});
 
   /// Remove the file associated with the given file [uri] from the set of
   /// valid files.  This guarantees that those files will be re-read on the
diff --git a/pkg/front_end/lib/src/api_prototype/kernel_generator.dart b/pkg/front_end/lib/src/api_prototype/kernel_generator.dart
index 39c7f326dc3..3d1eef76da0 100644
--- a/pkg/front_end/lib/src/api_prototype/kernel_generator.dart
+++ b/pkg/front_end/lib/src/api_prototype/kernel_generator.dart
@@ -46,16 +46,16 @@ import 'compiler_options.dart' show CompilerOptions;
 /// an error is reported.
 // TODO(sigmund): rename to kernelForScript?
 Future<CompilerResult?> kernelForProgram(Uri source, CompilerOptions options,
-    {List<Uri> additionalSources: const <Uri>[]}) async {
+    {List<Uri> additionalSources = const <Uri>[]}) async {
   return (await kernelForProgramInternal(source, options,
       additionalSources: additionalSources));
 }
 
 Future<CompilerResult?> kernelForProgramInternal(
     Uri source, CompilerOptions options,
-    {List<Uri> additionalSources: const <Uri>[],
-    bool retainDataForTesting: false,
-    bool requireMain: true}) async {
+    {List<Uri> additionalSources = const <Uri>[],
+    bool retainDataForTesting = false,
+    bool requireMain = true}) async {
   ProcessedOptions pOptions = new ProcessedOptions(
       options: options, inputs: [source, ...additionalSources]);
   return await CompilerContext.runWithOptions(pOptions, (context) async {
diff --git a/pkg/front_end/lib/src/api_prototype/summary_generator.dart b/pkg/front_end/lib/src/api_prototype/summary_generator.dart
index dc0260b6831..2516631f139 100644
--- a/pkg/front_end/lib/src/api_prototype/summary_generator.dart
+++ b/pkg/front_end/lib/src/api_prototype/summary_generator.dart
@@ -29,7 +29,7 @@ import '../kernel_generator_impl.dart';
 ///
 /// The return value is a list of bytes to write to the summary file.
 Future<List<int>?> summaryFor(List<Uri> sources, CompilerOptions options,
-    {bool truncate: false}) async {
+    {bool truncate = false}) async {
   return (await generateKernel(
           new ProcessedOptions(options: options, inputs: sources),
           buildSummary: true,
diff --git a/pkg/front_end/lib/src/api_unstable/bazel_worker.dart b/pkg/front_end/lib/src/api_unstable/bazel_worker.dart
index c084dd8ac6e..d27da2decc3 100644
--- a/pkg/front_end/lib/src/api_unstable/bazel_worker.dart
+++ b/pkg/front_end/lib/src/api_unstable/bazel_worker.dart
@@ -70,9 +70,9 @@ Future<InitializedCompilerState> initializeIncrementalCompiler(
     Iterable<String>? experiments,
     bool outlineOnly,
     Map<String, String> environmentDefines,
-    {bool trackNeededDillLibraries: false,
-    bool verbose: false,
-    NnbdMode nnbdMode: NnbdMode.Weak}) {
+    {bool trackNeededDillLibraries = false,
+    bool verbose = false,
+    NnbdMode nnbdMode = NnbdMode.Weak}) {
   List<Component> outputLoadedAdditionalDills =
       new List<Component>.filled(additionalDills.length, dummyComponent);
   Map<ExperimentalFlag, bool> experimentalFlags = parseExperimentalFlags(
@@ -108,8 +108,8 @@ InitializedCompilerState initializeCompiler(
   FileSystem fileSystem,
   Iterable<String> experiments,
   Map<String, String> environmentDefines, {
-  bool verbose: false,
-  NnbdMode nnbdMode: NnbdMode.Weak,
+  bool verbose = false,
+  NnbdMode nnbdMode = NnbdMode.Weak,
 }) {
   // TODO(sigmund): use incremental compiler when it supports our use case.
   // Note: it is common for the summary worker to invoke the compiler with the
@@ -137,7 +137,7 @@ InitializedCompilerState initializeCompiler(
 
 Future<CompilerResult> _compile(InitializedCompilerState compilerState,
     List<Uri> inputs, DiagnosticMessageHandler diagnosticMessageHandler,
-    {bool? buildSummary, bool? buildComponent, bool includeOffsets: true}) {
+    {bool? buildSummary, bool? buildComponent, bool includeOffsets = true}) {
   buildSummary ??= true;
   buildComponent ??= true;
   CompilerOptions options = compilerState.options;
@@ -155,7 +155,7 @@ Future<CompilerResult> _compile(InitializedCompilerState compilerState,
 
 Future<List<int>?> compileSummary(InitializedCompilerState compilerState,
     List<Uri> inputs, DiagnosticMessageHandler diagnosticMessageHandler,
-    {bool includeOffsets: false}) async {
+    {bool includeOffsets = false}) async {
   CompilerResult result = await _compile(
       compilerState, inputs, diagnosticMessageHandler,
       buildSummary: true,
@@ -166,7 +166,7 @@ Future<List<int>?> compileSummary(InitializedCompilerState compilerState,
 
 Future<Component?> compileComponent(InitializedCompilerState compilerState,
     List<Uri> inputs, DiagnosticMessageHandler diagnosticMessageHandler,
-    {bool buildSummary: true}) async {
+    {bool buildSummary = true}) async {
   CompilerResult result = await _compile(
       compilerState, inputs, diagnosticMessageHandler,
       buildSummary: buildSummary, buildComponent: true);
diff --git a/pkg/front_end/lib/src/api_unstable/dart2js.dart b/pkg/front_end/lib/src/api_unstable/dart2js.dart
index b694dff3c94..5ae2f54d7be 100644
--- a/pkg/front_end/lib/src/api_unstable/dart2js.dart
+++ b/pkg/front_end/lib/src/api_unstable/dart2js.dart
@@ -130,10 +130,10 @@ InitializedCompilerState initializeCompiler(
     Uri? packagesFileUri,
     {required Map<ExperimentalFlag, bool> explicitExperimentalFlags,
     Map<String, String>? environmentDefines,
-    bool verify: false,
+    bool verify = false,
     NnbdMode? nnbdMode,
-    Set<InvocationMode> invocationModes: const <InvocationMode>{},
-    Verbosity verbosity: Verbosity.all}) {
+    Set<InvocationMode> invocationModes = const <InvocationMode>{},
+    Verbosity verbosity = Verbosity.all}) {
   additionalDills.sort((a, b) => a.toString().compareTo(b.toString()));
 
   // We don't check `target` because it doesn't support '==' and each
diff --git a/pkg/front_end/lib/src/api_unstable/ddc.dart b/pkg/front_end/lib/src/api_unstable/ddc.dart
index d462d69b5dc..45edbe9ed10 100644
--- a/pkg/front_end/lib/src/api_unstable/ddc.dart
+++ b/pkg/front_end/lib/src/api_unstable/ddc.dart
@@ -180,7 +180,7 @@ Future<InitializedCompilerState> initializeIncrementalCompiler(
     {FileSystem? fileSystem,
     required Map<ExperimentalFlag, bool> explicitExperimentalFlags,
     required Map<String, String> environmentDefines,
-    bool trackNeededDillLibraries: false,
+    bool trackNeededDillLibraries = false,
     required NnbdMode nnbdMode}) {
   return modular.initializeIncrementalCompiler(
       oldState,
diff --git a/pkg/front_end/lib/src/api_unstable/modular_incremental_compilation.dart b/pkg/front_end/lib/src/api_unstable/modular_incremental_compilation.dart
index 88b68ded372..8324865bba8 100644
--- a/pkg/front_end/lib/src/api_unstable/modular_incremental_compilation.dart
+++ b/pkg/front_end/lib/src/api_unstable/modular_incremental_compilation.dart
@@ -46,16 +46,16 @@ Future<InitializedCompilerState> initializeIncrementalCompiler(
     List<Uri> additionalDills,
     Map<Uri, List<int>> workerInputDigests,
     Target target,
-    {bool compileSdk: false,
-    Uri? sdkRoot: null,
+    {bool compileSdk = false,
+    Uri? sdkRoot = null,
     required FileSystem fileSystem,
     required Map<ExperimentalFlag, bool> explicitExperimentalFlags,
-    Map<String, String> environmentDefines: const {},
+    Map<String, String> environmentDefines = const {},
     bool? outlineOnly,
-    bool omitPlatform: false,
-    bool trackNeededDillLibraries: false,
-    bool verbose: false,
-    NnbdMode nnbdMode: NnbdMode.Weak}) async {
+    bool omitPlatform = false,
+    bool trackNeededDillLibraries = false,
+    bool verbose = false,
+    NnbdMode nnbdMode = NnbdMode.Weak}) async {
   bool isRetry = false;
   while (true) {
     try {
diff --git a/pkg/front_end/lib/src/base/library_info.dart b/pkg/front_end/lib/src/base/library_info.dart
index 5dea369a977..8f419918f38 100644
--- a/pkg/front_end/lib/src/base/library_info.dart
+++ b/pkg/front_end/lib/src/base/library_info.dart
@@ -80,13 +80,13 @@ class LibraryInfo {
   final Maturity maturity;
 
   const LibraryInfo(this.path,
-      {String categories: "",
+      {String categories = "",
       this.dart2jsPath,
       this.dart2jsPatchPath,
-      this.implementation: false,
-      this.documented: true,
-      this.maturity: Maturity.UNSPECIFIED,
-      this.platforms: DART2JS_PLATFORM | VM_PLATFORM})
+      this.implementation = false,
+      this.documented = true,
+      this.maturity = Maturity.UNSPECIFIED,
+      this.platforms = DART2JS_PLATFORM | VM_PLATFORM})
       : _categories = categories;
 
   /// The categories in which the library can be used.
diff --git a/pkg/front_end/lib/src/base/processed_options.dart b/pkg/front_end/lib/src/base/processed_options.dart
index a6c12a010e7..a0c4efa2ca0 100644
--- a/pkg/front_end/lib/src/base/processed_options.dart
+++ b/pkg/front_end/lib/src/base/processed_options.dart
@@ -298,7 +298,7 @@ class ProcessedOptions {
 
   /// Runs various validations checks on the input options. For instance,
   /// if an option is a path to a file, it checks that the file exists.
-  Future<bool> validateOptions({bool errorOnMissingInput: true}) async {
+  Future<bool> validateOptions({bool errorOnMissingInput = true}) async {
     if (verbose) print(debugString());
 
     if (errorOnMissingInput && inputs.isEmpty) {
@@ -473,7 +473,7 @@ class ProcessedOptions {
   ///
   /// This is an asynchronous method since file system operations may be
   /// required to locate/read the packages file as well as SDK metadata.
-  Future<UriTranslator> getUriTranslator({bool bypassCache: false}) async {
+  Future<UriTranslator> getUriTranslator({bool bypassCache = false}) async {
     if (bypassCache) {
       _uriTranslator = null;
       _packages = null;
diff --git a/pkg/front_end/lib/src/compute_platform_binaries_location.dart b/pkg/front_end/lib/src/compute_platform_binaries_location.dart
index e53340fd3cb..c273b4c69aa 100644
--- a/pkg/front_end/lib/src/compute_platform_binaries_location.dart
+++ b/pkg/front_end/lib/src/compute_platform_binaries_location.dart
@@ -74,7 +74,7 @@ String? computePlatformDillName(
 /// Computes the location of platform binaries, that is, compiled `.dill` files
 /// of the platform libraries that are used to avoid recompiling those
 /// libraries.
-Uri computePlatformBinariesLocation({bool forceBuildDir: false}) {
+Uri computePlatformBinariesLocation({bool forceBuildDir = false}) {
   String? resolvedExecutable = Platform.environment['resolvedExecutable'];
   // The directory of the Dart VM executable.
   Uri vmDirectory = Uri.base
diff --git a/pkg/front_end/lib/src/fasta/builder/class_builder.dart b/pkg/front_end/lib/src/fasta/builder/class_builder.dart
index 71d70e3bac3..e69bb4275c5 100644
--- a/pkg/front_end/lib/src/fasta/builder/class_builder.dart
+++ b/pkg/front_end/lib/src/fasta/builder/class_builder.dart
@@ -122,7 +122,7 @@ abstract class ClassBuilder implements DeclarationBuilder {
   /// patch are searched before searching the interface members in the origin
   /// class.
   Member? lookupInstanceMember(ClassHierarchy hierarchy, Name name,
-      {bool isSetter: false, bool isSuper: false});
+      {bool isSetter = false, bool isSuper = false});
 
   /// Calls [f] for each constructor declared in this class.
   void forEachConstructor(void Function(String, MemberBuilder) f);
@@ -196,7 +196,7 @@ abstract class ClassBuilderImpl extends DeclarationBuilderImpl
   @override
   Builder? findStaticBuilder(
       String name, int charOffset, Uri fileUri, LibraryBuilder accessingLibrary,
-      {bool isSetter: false}) {
+      {bool isSetter = false}) {
     if (accessingLibrary.nameOriginBuilder.origin !=
             libraryBuilder.nameOriginBuilder.origin &&
         name.startsWith("_")) {
@@ -232,7 +232,7 @@ abstract class ClassBuilderImpl extends DeclarationBuilderImpl
 
   @override
   Builder? lookupLocalMember(String name,
-      {bool setter: false, bool required: false}) {
+      {bool setter = false, bool required = false}) {
     Builder? builder = scope.lookupLocalMember(name, setter: setter);
     if (builder == null && isPatch) {
       builder = origin.scope.lookupLocalMember(name, setter: setter);
@@ -385,7 +385,7 @@ abstract class ClassBuilderImpl extends DeclarationBuilderImpl
 
   @override
   Member? lookupInstanceMember(ClassHierarchy hierarchy, Name name,
-      {bool isSetter: false, bool isSuper: false}) {
+      {bool isSetter = false, bool isSuper = false}) {
     Class? instanceClass = cls;
     if (isPatch) {
       assert(identical(instanceClass, origin.cls),
diff --git a/pkg/front_end/lib/src/fasta/builder/declaration_builder.dart b/pkg/front_end/lib/src/fasta/builder/declaration_builder.dart
index a58e4a1f31a..cec4048952c 100644
--- a/pkg/front_end/lib/src/fasta/builder/declaration_builder.dart
+++ b/pkg/front_end/lib/src/fasta/builder/declaration_builder.dart
@@ -20,10 +20,10 @@ abstract class DeclarationBuilder implements TypeDeclarationBuilder {
   /// Lookup a member accessed statically through this declaration.
   Builder? findStaticBuilder(
       String name, int charOffset, Uri fileUri, LibraryBuilder accessingLibrary,
-      {bool isSetter: false});
+      {bool isSetter = false});
 
   void addProblem(Message message, int charOffset, int length,
-      {bool wasHandled: false, List<LocatedMessage>? context});
+      {bool wasHandled = false, List<LocatedMessage>? context});
 
   /// Returns the type of `this` in an instance of this declaration.
   ///
@@ -37,7 +37,7 @@ abstract class DeclarationBuilder implements TypeDeclarationBuilder {
   /// If [required] is `true` and no member is found an internal problem is
   /// reported.
   Builder? lookupLocalMember(String name,
-      {bool setter: false, bool required: false});
+      {bool setter = false, bool required = false});
 }
 
 abstract class DeclarationBuilderImpl extends TypeDeclarationBuilderImpl
@@ -61,7 +61,7 @@ abstract class DeclarationBuilderImpl extends TypeDeclarationBuilderImpl
 
   @override
   void addProblem(Message message, int charOffset, int length,
-      {bool wasHandled: false, List<LocatedMessage>? context}) {
+      {bool wasHandled = false, List<LocatedMessage>? context}) {
     libraryBuilder.addProblem(message, charOffset, length, fileUri,
         wasHandled: wasHandled, context: context);
   }
diff --git a/pkg/front_end/lib/src/fasta/builder/extension_builder.dart b/pkg/front_end/lib/src/fasta/builder/extension_builder.dart
index d26e994b5cd..f31ee90da1d 100644
--- a/pkg/front_end/lib/src/fasta/builder/extension_builder.dart
+++ b/pkg/front_end/lib/src/fasta/builder/extension_builder.dart
@@ -43,7 +43,7 @@ abstract class ExtensionBuilder implements DeclarationBuilder {
   // member lookup to avoid reporting that the member doesn't exist when it is
   // duplicate.
   Builder? lookupLocalMemberByName(Name name,
-      {bool setter: false, bool required: false});
+      {bool setter = false, bool required = false});
 
   /// Calls [f] for each member declared in this extension.
   void forEach(void f(String name, Builder builder));
@@ -59,7 +59,7 @@ abstract class ExtensionBuilderImpl extends DeclarationBuilderImpl
   @override
   Builder? findStaticBuilder(
       String name, int charOffset, Uri fileUri, LibraryBuilder accessingLibrary,
-      {bool isSetter: false}) {
+      {bool isSetter = false}) {
     if (accessingLibrary.nameOriginBuilder.origin !=
             libraryBuilder.nameOriginBuilder.origin &&
         name.startsWith("_")) {
@@ -174,7 +174,7 @@ abstract class ExtensionBuilderImpl extends DeclarationBuilderImpl
 
   @override
   Builder? lookupLocalMember(String name,
-      {bool setter: false, bool required: false}) {
+      {bool setter = false, bool required = false}) {
     // TODO(johnniwinther): Support patching on extensions.
     Builder? builder = scope.lookupLocalMember(name, setter: setter);
     if (required && builder == null) {
@@ -189,7 +189,7 @@ abstract class ExtensionBuilderImpl extends DeclarationBuilderImpl
 
   @override
   Builder? lookupLocalMemberByName(Name name,
-      {bool setter: false, bool required: false}) {
+      {bool setter = false, bool required = false}) {
     Builder? builder =
         lookupLocalMember(name.text, setter: setter, required: required);
     if (builder == null && setter) {
diff --git a/pkg/front_end/lib/src/fasta/builder/formal_parameter_builder.dart b/pkg/front_end/lib/src/fasta/builder/formal_parameter_builder.dart
index d23a14fbf61..acfb5ad77e0 100644
--- a/pkg/front_end/lib/src/fasta/builder/formal_parameter_builder.dart
+++ b/pkg/front_end/lib/src/fasta/builder/formal_parameter_builder.dart
@@ -97,7 +97,7 @@ class FormalParameterBuilder extends ModifierBuilderImpl
 
   FormalParameterBuilder(this.metadata, this.kind, this.modifiers, this.type,
       this.name, LibraryBuilder? compilationUnit, int charOffset,
-      {Uri? fileUri, this.isExtensionThis: false})
+      {Uri? fileUri, this.isExtensionThis = false})
       : this.fileUri = fileUri ?? compilationUnit?.fileUri,
         super(compilationUnit, charOffset) {
     type.registerInferredTypeListener(this);
diff --git a/pkg/front_end/lib/src/fasta/builder/invalid_type_declaration_builder.dart b/pkg/front_end/lib/src/fasta/builder/invalid_type_declaration_builder.dart
index c57bc8a56b7..1b9ac262ca5 100644
--- a/pkg/front_end/lib/src/fasta/builder/invalid_type_declaration_builder.dart
+++ b/pkg/front_end/lib/src/fasta/builder/invalid_type_declaration_builder.dart
@@ -27,7 +27,7 @@ class InvalidTypeDeclarationBuilder extends TypeDeclarationBuilderImpl
   final bool suppressMessage;
 
   InvalidTypeDeclarationBuilder(String name, this.message,
-      {this.context, this.suppressMessage: true})
+      {this.context, this.suppressMessage = true})
       : super(null, 0, name, null, message.charOffset);
 
   @override
diff --git a/pkg/front_end/lib/src/fasta/builder/library_builder.dart b/pkg/front_end/lib/src/fasta/builder/library_builder.dart
index a2a3380abee..8f1160f3b46 100644
--- a/pkg/front_end/lib/src/fasta/builder/library_builder.dart
+++ b/pkg/front_end/lib/src/fasta/builder/library_builder.dart
@@ -92,10 +92,10 @@ abstract class LibraryBuilder implements ModifierBuilder {
   /// arguments passed to this method.
   FormattedMessage? addProblem(
       Message message, int charOffset, int length, Uri? fileUri,
-      {bool wasHandled: false,
+      {bool wasHandled = false,
       List<LocatedMessage>? context,
       Severity? severity,
-      bool problemOnLibrary: false});
+      bool problemOnLibrary = false});
 
   /// Returns true if the export scope was modified.
   bool addToExportScope(String name, Builder member, [int charOffset = -1]);
@@ -104,7 +104,7 @@ abstract class LibraryBuilder implements ModifierBuilder {
 
   Builder computeAmbiguousDeclaration(
       String name, Builder declaration, Builder other, int charOffset,
-      {bool isExport: false, bool isImport: false});
+      {bool isExport = false, bool isImport = false});
 
   /// Looks up [constructorName] in the class named [className].
   ///
@@ -119,7 +119,7 @@ abstract class LibraryBuilder implements ModifierBuilder {
   /// unnamed constructor. it's an error if [constructorName] starts with
   /// `"_"`, and [bypassLibraryPrivacy] is false.
   MemberBuilder getConstructor(String className,
-      {String constructorName, bool bypassLibraryPrivacy: false});
+      {String constructorName, bool bypassLibraryPrivacy = false});
 
   void becomeCoreLibrary();
 
@@ -133,7 +133,7 @@ abstract class LibraryBuilder implements ModifierBuilder {
   ///
   /// If [required] is `true` and no member is found an internal problem is
   /// reported.
-  Builder? lookupLocalMember(String name, {bool required: false});
+  Builder? lookupLocalMember(String name, {bool required = false});
 
   Builder? lookup(String name, int charOffset, Uri fileUri);
 
@@ -222,10 +222,10 @@ abstract class LibraryBuilderImpl extends ModifierBuilderImpl
   @override
   FormattedMessage? addProblem(
       Message message, int charOffset, int length, Uri? fileUri,
-      {bool wasHandled: false,
+      {bool wasHandled = false,
       List<LocatedMessage>? context,
       Severity? severity,
-      bool problemOnLibrary: false}) {
+      bool problemOnLibrary = false}) {
     fileUri ??= this.fileUri;
 
     return loader.addProblem(message, charOffset, length, fileUri,
@@ -259,7 +259,7 @@ abstract class LibraryBuilderImpl extends ModifierBuilderImpl
 
   @override
   MemberBuilder getConstructor(String className,
-      {String? constructorName, bool bypassLibraryPrivacy: false}) {
+      {String? constructorName, bool bypassLibraryPrivacy = false}) {
     constructorName ??= "";
     if (constructorName.startsWith("_") && !bypassLibraryPrivacy) {
       return internalProblem(
@@ -313,7 +313,7 @@ abstract class LibraryBuilderImpl extends ModifierBuilderImpl
   }
 
   @override
-  Builder? lookupLocalMember(String name, {bool required: false}) {
+  Builder? lookupLocalMember(String name, {bool required = false}) {
     Builder? builder = scope.lookupLocalMember(name, setter: false);
     if (required && builder == null) {
       internalProblem(
diff --git a/pkg/front_end/lib/src/fasta/builder/named_type_builder.dart b/pkg/front_end/lib/src/fasta/builder/named_type_builder.dart
index 22b48629126..ea951afd2eb 100644
--- a/pkg/front_end/lib/src/fasta/builder/named_type_builder.dart
+++ b/pkg/front_end/lib/src/fasta/builder/named_type_builder.dart
@@ -119,7 +119,7 @@ abstract class NamedTypeBuilder extends TypeBuilder {
       Uri? fileUri,
       int? charOffset,
       required InstanceTypeVariableAccessState instanceTypeVariableAccess,
-      bool performTypeCanonicalization: false}) {
+      bool performTypeCanonicalization = false}) {
     bool isExplicit = true;
     if (arguments != null) {
       for (TypeBuilder argument in arguments) {
@@ -150,7 +150,7 @@ abstract class NamedTypeBuilder extends TypeBuilder {
       this.fileUri,
       this.charOffset,
       required InstanceTypeVariableAccessState instanceTypeVariableAccess,
-      bool performTypeCanonicalization: false,
+      bool performTypeCanonicalization = false,
       TypeDeclarationBuilder? declaration})
       : assert(name is String || name is QualifiedName),
         this._instanceTypeVariableAccess = instanceTypeVariableAccess,
@@ -631,7 +631,7 @@ class _ExplicitNamedTypeBuilder extends NamedTypeBuilder {
       Uri? fileUri,
       int? charOffset,
       required InstanceTypeVariableAccessState instanceTypeVariableAccess,
-      bool performTypeCanonicalization: false})
+      bool performTypeCanonicalization = false})
       : super._(
             name: name,
             nullabilityBuilder: nullabilityBuilder,
@@ -710,7 +710,7 @@ class _InferredNamedTypeBuilder extends NamedTypeBuilder
       Uri? fileUri,
       int? charOffset,
       required InstanceTypeVariableAccessState instanceTypeVariableAccess,
-      bool performTypeCanonicalization: false})
+      bool performTypeCanonicalization = false})
       : super._(
             name: name,
             nullabilityBuilder: nullabilityBuilder,
diff --git a/pkg/front_end/lib/src/fasta/compiler_context.dart b/pkg/front_end/lib/src/fasta/compiler_context.dart
index 0ace0471be8..823a3b881eb 100644
--- a/pkg/front_end/lib/src/fasta/compiler_context.dart
+++ b/pkg/front_end/lib/src/fasta/compiler_context.dart
@@ -123,7 +123,7 @@ class CompilerContext {
   /// `CompilerContext.current.options`.
   static Future<T> runWithOptions<T>(
       ProcessedOptions options, Future<T> action(CompilerContext c),
-      {bool errorOnMissingInput: true}) {
+      {bool errorOnMissingInput = true}) {
     return new CompilerContext(options)
         .runInContext<T>((CompilerContext c) async {
       await options.validateOptions(errorOnMissingInput: errorOnMissingInput);
diff --git a/pkg/front_end/lib/src/fasta/dill/dill_class_builder.dart b/pkg/front_end/lib/src/fasta/dill/dill_class_builder.dart
index 57d337ae4e5..331b622446a 100644
--- a/pkg/front_end/lib/src/fasta/dill/dill_class_builder.dart
+++ b/pkg/front_end/lib/src/fasta/dill/dill_class_builder.dart
@@ -190,7 +190,7 @@ class DillClassBuilder extends ClassBuilderImpl {
 
   @override
   void forEachConstructor(void Function(String, MemberBuilder) f,
-      {bool includeInjectedConstructors: false}) {
+      {bool includeInjectedConstructors = false}) {
     constructorScope.forEach(f);
   }
 
diff --git a/pkg/front_end/lib/src/fasta/dill/dill_library_builder.dart b/pkg/front_end/lib/src/fasta/dill/dill_library_builder.dart
index 11c414196da..04b96d7b340 100644
--- a/pkg/front_end/lib/src/fasta/dill/dill_library_builder.dart
+++ b/pkg/front_end/lib/src/fasta/dill/dill_library_builder.dart
@@ -47,7 +47,7 @@ import 'dill_type_alias_builder.dart' show DillTypeAliasBuilder;
 class LazyLibraryScope extends LazyScope {
   DillLibraryBuilder? libraryBuilder;
 
-  LazyLibraryScope.top({bool isModifiable: false})
+  LazyLibraryScope.top({bool isModifiable = false})
       : super(<String, Builder>{}, <String, MemberBuilder>{}, null, "top",
             isModifiable: isModifiable);
 
@@ -290,7 +290,7 @@ class DillLibraryBuilder extends LibraryBuilderImpl {
   @override
   Builder computeAmbiguousDeclaration(
       String name, Builder builder, Builder other, int charOffset,
-      {bool isExport: false, bool isImport: false}) {
+      {bool isExport = false, bool isImport = false}) {
     if (builder == other) return builder;
     if (builder is InvalidTypeDeclarationBuilder) return builder;
     if (other is InvalidTypeDeclarationBuilder) return other;
@@ -313,7 +313,7 @@ class DillLibraryBuilder extends LibraryBuilderImpl {
     isReadyToBuild = true;
   }
 
-  void markAsReadyToFinalizeExports({bool suppressFinalizationErrors: false}) {
+  void markAsReadyToFinalizeExports({bool suppressFinalizationErrors = false}) {
     isReadyToFinalizeExports = true;
     this.suppressFinalizationErrors = suppressFinalizationErrors;
   }
diff --git a/pkg/front_end/lib/src/fasta/dill/dill_loader.dart b/pkg/front_end/lib/src/fasta/dill/dill_loader.dart
index bc0090870bb..e213909fe76 100644
--- a/pkg/front_end/lib/src/fasta/dill/dill_loader.dart
+++ b/pkg/front_end/lib/src/fasta/dill/dill_loader.dart
@@ -199,10 +199,10 @@ class DillLoader extends Loader {
   @override
   FormattedMessage? addProblem(
       Message message, int charOffset, int length, Uri? fileUri,
-      {bool wasHandled: false,
+      {bool wasHandled = false,
       List<LocatedMessage>? context,
       Severity? severity,
-      bool problemOnLibrary: false,
+      bool problemOnLibrary = false,
       List<Uri>? involvedFiles}) {
     return _addMessage(message, charOffset, length, fileUri, severity,
         wasHandled: wasHandled,
@@ -224,9 +224,9 @@ class DillLoader extends Loader {
   /// [wasHandled] is false.
   FormattedMessage? _addMessage(Message message, int charOffset, int length,
       Uri? fileUri, Severity? severity,
-      {bool wasHandled: false,
+      {bool wasHandled = false,
       List<LocatedMessage>? context,
-      bool problemOnLibrary: false,
+      bool problemOnLibrary = false,
       List<Uri>? involvedFiles}) {
     assert(
         fileUri != missingUri, "Message unexpectedly reported on missing uri.");
@@ -270,7 +270,7 @@ severity: $severity
   /// Append compiled libraries from the given [component]. If the [filter] is
   /// provided, append only libraries whose [Uri] is accepted by the [filter].
   List<DillLibraryBuilder> appendLibraries(Component component,
-      {bool Function(Uri uri)? filter, int byteCount: 0}) {
+      {bool Function(Uri uri)? filter, int byteCount = 0}) {
     List<Library> componentLibraries = component.libraries;
     List<Uri> requestedLibraries = <Uri>[];
     List<Uri> requestedLibrariesFileUri = <Uri>[];
@@ -319,7 +319,7 @@ severity: $severity
     builder.markAsReadyToBuild();
   }
 
-  void finalizeExports({bool suppressFinalizationErrors: false}) {
+  void finalizeExports({bool suppressFinalizationErrors = false}) {
     for (DillLibraryBuilder builder in libraryBuilders) {
       builder.markAsReadyToFinalizeExports(
           suppressFinalizationErrors: suppressFinalizationErrors);
diff --git a/pkg/front_end/lib/src/fasta/dill/dill_target.dart b/pkg/front_end/lib/src/fasta/dill/dill_target.dart
index f5972b5b571..d63a6b564f0 100644
--- a/pkg/front_end/lib/src/fasta/dill/dill_target.dart
+++ b/pkg/front_end/lib/src/fasta/dill/dill_target.dart
@@ -84,7 +84,7 @@ class DillTarget extends TargetImplementation {
         involvedFiles: involvedFiles);
   }
 
-  void buildOutlines({bool suppressFinalizationErrors: false}) {
+  void buildOutlines({bool suppressFinalizationErrors = false}) {
     if (loader.libraries.isNotEmpty) {
       benchmarker?.enterPhase(BenchmarkPhases.dill_buildOutlines);
       loader.buildOutlines();
diff --git a/pkg/front_end/lib/src/fasta/get_dependencies.dart b/pkg/front_end/lib/src/fasta/get_dependencies.dart
index 284b335a625..d81291c442b 100644
--- a/pkg/front_end/lib/src/fasta/get_dependencies.dart
+++ b/pkg/front_end/lib/src/fasta/get_dependencies.dart
@@ -26,7 +26,7 @@ Future<List<Uri>> getDependencies(Uri script,
     {Uri? sdk,
     Uri? packages,
     Uri? platform,
-    bool verbose: false,
+    bool verbose = false,
     Target? target}) async {
   CompilerOptions options = new CompilerOptions()
     ..target = target
diff --git a/pkg/front_end/lib/src/fasta/incremental_compiler.dart b/pkg/front_end/lib/src/fasta/incremental_compiler.dart
index 0535dcc7701..e8d1667d20d 100644
--- a/pkg/front_end/lib/src/fasta/incremental_compiler.dart
+++ b/pkg/front_end/lib/src/fasta/incremental_compiler.dart
@@ -281,8 +281,8 @@ class IncrementalCompiler implements IncrementalKernelGenerator {
   @override
   Future<IncrementalCompilerResult> computeDelta(
       {List<Uri>? entryPoints,
-      bool fullComponent: false,
-      bool trackNeededDillLibraries: false}) async {
+      bool fullComponent = false,
+      bool trackNeededDillLibraries = false}) async {
     while (_currentlyCompiling != null) {
       await _currentlyCompiling!.future;
     }
diff --git a/pkg/front_end/lib/src/fasta/kernel/body_builder.dart b/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
index b96dfba2113..c2b5edee5e4 100644
--- a/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
@@ -611,7 +611,7 @@ class BodyBuilder extends StackListenerImpl
   @override
   LibraryFeatures get libraryFeatures => libraryBuilder.libraryFeatures;
 
-  void _enterLocalState({bool inLateLocalInitializer: false}) {
+  void _enterLocalState({bool inLateLocalInitializer = false}) {
     _localInitializerState =
         _localInitializerState.prepend(inLateLocalInitializer);
   }
@@ -2700,9 +2700,9 @@ class BodyBuilder extends StackListenerImpl
   @override
   Expression buildUnresolvedError(String name, int charOffset,
       {Member? candidate,
-      bool isSuper: false,
+      bool isSuper = false,
       required UnresolvedKind kind,
-      bool isStatic: false,
+      bool isStatic = false,
       Arguments? arguments,
       Expression? rhs,
       LocatedMessage? message,
@@ -2783,8 +2783,8 @@ class BodyBuilder extends StackListenerImpl
   }
 
   Message warnUnresolvedMember(Name name, int charOffset,
-      {bool isSuper: false,
-      bool reportWarning: true,
+      {bool isSuper = false,
+      bool reportWarning = true,
       List<LocatedMessage>? context}) {
     Message message = isSuper
         ? fasta.templateSuperclassHasNoMember.withArguments(name.text)
@@ -2798,8 +2798,8 @@ class BodyBuilder extends StackListenerImpl
 
   @override
   Message warnUnresolvedGet(Name name, int charOffset,
-      {bool isSuper: false,
-      bool reportWarning: true,
+      {bool isSuper = false,
+      bool reportWarning = true,
       List<LocatedMessage>? context}) {
     Message message = isSuper
         ? fasta.templateSuperclassHasNoGetter.withArguments(name.text)
@@ -2813,8 +2813,8 @@ class BodyBuilder extends StackListenerImpl
 
   @override
   Message warnUnresolvedSet(Name name, int charOffset,
-      {bool isSuper: false,
-      bool reportWarning: true,
+      {bool isSuper = false,
+      bool reportWarning = true,
       List<LocatedMessage>? context}) {
     Message message = isSuper
         ? fasta.templateSuperclassHasNoSetter.withArguments(name.text)
@@ -2828,8 +2828,8 @@ class BodyBuilder extends StackListenerImpl
 
   @override
   Message warnUnresolvedMethod(Name name, int charOffset,
-      {bool isSuper: false,
-      bool reportWarning: true,
+      {bool isSuper = false,
+      bool reportWarning = true,
       List<LocatedMessage>? context}) {
     String plainName = name.text;
 
@@ -2852,7 +2852,7 @@ class BodyBuilder extends StackListenerImpl
     return message;
   }
 
-  Message warnUnresolvedConstructor(Name name, {bool isSuper: false}) {
+  Message warnUnresolvedConstructor(Name name, {bool isSuper = false}) {
     Message message = isSuper
         ? fasta.templateSuperclassHasNoConstructor.withArguments(name.text)
         : fasta.templateConstructorNotFound.withArguments(name.text);
@@ -2868,14 +2868,14 @@ class BodyBuilder extends StackListenerImpl
   }
 
   @override
-  Member? lookupSuperMember(Name name, {bool isSetter: false}) {
+  Member? lookupSuperMember(Name name, {bool isSetter = false}) {
     return (declarationBuilder as ClassBuilder).lookupInstanceMember(
         hierarchy, name,
         isSetter: isSetter, isSuper: true);
   }
 
   @override
-  Constructor? lookupConstructor(Name name, {bool isSuper: false}) {
+  Constructor? lookupConstructor(Name name, {bool isSuper = false}) {
     return sourceClassBuilder!.lookupConstructor(name, isSuper: isSuper);
   }
 
@@ -2917,7 +2917,7 @@ class BodyBuilder extends StackListenerImpl
   /// [charOffset] as the file offset.
   @override
   VariableGet createVariableGet(VariableDeclaration variable, int charOffset,
-      {bool forNullGuardedAccess: false}) {
+      {bool forNullGuardedAccess = false}) {
     if (!(variable as VariableDeclarationImpl).isLocalFunction) {
       typeInferrer.assignedVariables.read(variable);
     }
@@ -2947,7 +2947,7 @@ class BodyBuilder extends StackListenerImpl
   @override
   Expression_Generator_Builder scopeLookup(
       Scope scope, String name, Token token,
-      {bool isQualified: false, PrefixBuilder? prefix}) {
+      {bool isQualified = false, PrefixBuilder? prefix}) {
     int charOffset = offsetForToken(token);
     if (token.isSynthetic) {
       return new ParserErrorGenerator(this, token, fasta.messageSyntheticToken);
@@ -5170,10 +5170,10 @@ class BodyBuilder extends StackListenerImpl
 
   @override
   Expression buildStaticInvocation(Member target, Arguments arguments,
-      {Constness constness: Constness.implicit,
+      {Constness constness = Constness.implicit,
       TypeAliasBuilder? typeAliasBuilder,
-      int charOffset: -1,
-      int charLength: noLength}) {
+      int charOffset = -1,
+      int charLength = noLength}) {
     // The argument checks for the initial target of redirecting factories
     // invocations are skipped in Dart 1.
     List<TypeParameter> typeParameters = target.function!.typeParameters;
@@ -7178,7 +7178,7 @@ class BodyBuilder extends StackListenerImpl
   @override
   Expression buildProblem(Message message, int charOffset, int length,
       {List<LocatedMessage>? context,
-      bool suppressMessage: false,
+      bool suppressMessage = false,
       Expression? expression}) {
     if (!suppressMessage) {
       addProblem(message, charOffset, length,
@@ -7261,7 +7261,7 @@ class BodyBuilder extends StackListenerImpl
   Statement buildProblemStatement(Message message, int charOffset,
       {List<LocatedMessage>? context,
       int? length,
-      bool suppressMessage: false}) {
+      bool suppressMessage = false}) {
     length ??= noLength;
     return new ExpressionStatement(buildProblem(message, charOffset, length,
         context: context, suppressMessage: suppressMessage));
@@ -7578,7 +7578,7 @@ class BodyBuilder extends StackListenerImpl
   @override
   Expression buildMethodInvocation(
       Expression receiver, Name name, Arguments arguments, int offset,
-      {bool isConstantExpression: false, bool isNullAware: false}) {
+      {bool isConstantExpression = false, bool isNullAware = false}) {
     if (constantContext != ConstantContext.none &&
         !isConstantExpression &&
         !libraryFeatures.constFunctions.isEnabled) {
@@ -7606,9 +7606,9 @@ class BodyBuilder extends StackListenerImpl
 
   @override
   Expression buildSuperInvocation(Name name, Arguments arguments, int offset,
-      {bool isConstantExpression: false,
-      bool isNullAware: false,
-      bool isImplicitCall: false}) {
+      {bool isConstantExpression = false,
+      bool isNullAware = false,
+      bool isImplicitCall = false}) {
     if (constantContext != ConstantContext.none &&
         !isConstantExpression &&
         !libraryFeatures.constFunctions.isEnabled) {
@@ -7640,7 +7640,7 @@ class BodyBuilder extends StackListenerImpl
 
   @override
   void addProblem(Message message, int charOffset, int length,
-      {bool wasHandled: false,
+      {bool wasHandled = false,
       List<LocatedMessage>? context,
       Severity? severity}) {
     libraryBuilder.addProblem(message, charOffset, length, uri,
@@ -7649,7 +7649,7 @@ class BodyBuilder extends StackListenerImpl
 
   @override
   void addProblemErrorIfConst(Message message, int charOffset, int length,
-      {bool wasHandled: false, List<LocatedMessage>? context}) {
+      {bool wasHandled = false, List<LocatedMessage>? context}) {
     // TODO(askesc): Instead of deciding on the severity, this method should
     // take two messages: one to use when a constant expression is
     // required and one to use otherwise.
@@ -7664,7 +7664,7 @@ class BodyBuilder extends StackListenerImpl
   @override
   Expression buildProblemErrorIfConst(
       Message message, int charOffset, int length,
-      {bool wasHandled: false, List<LocatedMessage>? context}) {
+      {bool wasHandled = false, List<LocatedMessage>? context}) {
     addProblemErrorIfConst(message, charOffset, length,
         wasHandled: wasHandled, context: context);
     String text = libraryBuilder.loader.target.context
@@ -7738,7 +7738,7 @@ class BodyBuilder extends StackListenerImpl
 
   @override
   String constructorNameForDiagnostics(String name,
-      {String? className, bool isSuper: false}) {
+      {String? className, bool isSuper = false}) {
     if (className == null) {
       Class cls = sourceClassBuilder!.cls;
       if (isSuper) {
diff --git a/pkg/front_end/lib/src/fasta/kernel/collections.dart b/pkg/front_end/lib/src/fasta/kernel/collections.dart
index ec4c2ff2f06..55f5724a54a 100644
--- a/pkg/front_end/lib/src/fasta/kernel/collections.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/collections.dart
@@ -314,7 +314,7 @@ class ForInElement extends Expression with ControlFlowElement {
 
   ForInElement(this.variable, this.iterable, this.syntheticAssignment,
       this.expressionEffects, this.body, this.problem,
-      {this.isAsync: false})
+      {this.isAsync = false})
       // ignore: unnecessary_null_comparison
       : assert(variable != null),
         // ignore: unnecessary_null_comparison
diff --git a/pkg/front_end/lib/src/fasta/kernel/combined_member_signature.dart b/pkg/front_end/lib/src/fasta/kernel/combined_member_signature.dart
index 0139e8217df..2e2bf57ff3f 100644
--- a/pkg/front_end/lib/src/fasta/kernel/combined_member_signature.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/combined_member_signature.dart
@@ -468,7 +468,7 @@ abstract class CombinedMemberSignatureBase<T> {
 
   /// Create a member signature with the [combinedMemberSignatureType] using the
   /// [canonicalMember] as member signature origin.
-  Procedure? createMemberFromSignature({bool copyLocation: true}) {
+  Procedure? createMemberFromSignature({bool copyLocation = true}) {
     if (canonicalMemberIndex == null) {
       return null;
     }
diff --git a/pkg/front_end/lib/src/fasta/kernel/constant_collection_builders.dart b/pkg/front_end/lib/src/fasta/kernel/constant_collection_builders.dart
index f52f249f4ff..4e3205ed2ae 100644
--- a/pkg/front_end/lib/src/fasta/kernel/constant_collection_builders.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/constant_collection_builders.dart
@@ -94,7 +94,7 @@ class ListConstantBuilder extends _ListOrSetConstantBuilder<ListLiteral> {
 
   ListConstantBuilder(
       Expression original, DartType elementType, ConstantEvaluator evaluator,
-      {this.isMutable: false})
+      {this.isMutable = false})
       : super(original, elementType, evaluator);
 
   @override
diff --git a/pkg/front_end/lib/src/fasta/kernel/constant_evaluator.dart b/pkg/front_end/lib/src/fasta/kernel/constant_evaluator.dart
index 1718ce35385..69c3cf338f8 100644
--- a/pkg/front_end/lib/src/fasta/kernel/constant_evaluator.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/constant_evaluator.dart
@@ -927,7 +927,7 @@ class ConstantEvaluator implements ExpressionVisitor<Constant> {
       {this.enableTripleShift = false,
       this.enableConstFunctions = false,
       this.errorOnUnevaluatedConstant = false,
-      this.evaluationMode: EvaluationMode.weak})
+      this.evaluationMode = EvaluationMode.weak})
       : numberSemantics = backend.numberSemantics,
         coreTypes = typeEnvironment.coreTypes,
         canonicalizationCache = <Constant, Constant>{},
diff --git a/pkg/front_end/lib/src/fasta/kernel/constant_int_folder.dart b/pkg/front_end/lib/src/fasta/kernel/constant_int_folder.dart
index 452ad531171..ae3837ca1ce 100644
--- a/pkg/front_end/lib/src/fasta/kernel/constant_int_folder.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/constant_int_folder.dart
@@ -33,7 +33,7 @@ abstract class ConstantIntFolder {
   /// `true`.
   int? asInt(Constant constant);
 
-  Constant makeIntConstant(int value, {bool unsigned: false});
+  Constant makeIntConstant(int value, {bool unsigned = false});
 
   Constant foldUnaryOperator(
       Expression node, String op, covariant Constant operand);
@@ -74,7 +74,7 @@ class VmConstantIntFolder extends ConstantIntFolder {
   }
 
   @override
-  IntConstant makeIntConstant(int value, {bool unsigned: false}) {
+  IntConstant makeIntConstant(int value, {bool unsigned = false}) {
     return new IntConstant(value);
   }
 
@@ -183,7 +183,7 @@ class JsConstantIntFolder extends ConstantIntFolder {
   }
 
   @override
-  DoubleConstant makeIntConstant(int value, {bool unsigned: false}) {
+  DoubleConstant makeIntConstant(int value, {bool unsigned = false}) {
     double doubleValue = value.toDouble();
     // Invalid assert: assert(doubleValue.toInt() == value);
     if (unsigned) {
diff --git a/pkg/front_end/lib/src/fasta/kernel/expression_generator.dart b/pkg/front_end/lib/src/fasta/kernel/expression_generator.dart
index 486282be327..bdfd91de350 100644
--- a/pkg/front_end/lib/src/fasta/kernel/expression_generator.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/expression_generator.dart
@@ -109,7 +109,7 @@ abstract class Generator {
   ///
   /// The returned expression evaluates to the assigned value, unless
   /// [voidContext] is true, in which case it may evaluate to anything.
-  Expression buildAssignment(Expression value, {bool voidContext: false});
+  Expression buildAssignment(Expression value, {bool voidContext = false});
 
   /// Returns a [Expression] representing a null-aware assignment (`??=`) with
   /// the generator on the LHS and [value] on the RHS.
@@ -119,20 +119,20 @@ abstract class Generator {
   ///
   /// [type] is the static type of the RHS.
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false});
+      {bool voidContext = false});
 
   /// Returns a [Expression] representing a compound assignment (e.g. `+=`)
   /// with the generator on the LHS and [value] on the RHS.
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false});
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false});
 
   /// Returns a [Expression] representing a pre-increment or pre-decrement of
   /// the generator.
   Expression buildPrefixIncrement(Name binaryOperator,
-      {int offset: TreeNode.noOffset, bool voidContext: false}) {
+      {int offset = TreeNode.noOffset, bool voidContext = false}) {
     return buildCompoundAssignment(
         binaryOperator, _forest.createIntLiteral(offset, 1),
         offset: offset,
@@ -146,7 +146,7 @@ abstract class Generator {
   /// Returns a [Expression] representing a post-increment or post-decrement of
   /// the generator.
   Expression buildPostfixIncrement(Name binaryOperator,
-      {int offset: TreeNode.noOffset, bool voidContext: false});
+      {int offset = TreeNode.noOffset, bool voidContext = false});
 
   /// Returns a [Generator] or [Expression] representing an index access
   /// (e.g. `a[b]`) with the generator on the receiver and [index] as the
@@ -340,7 +340,7 @@ class VariableUseGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     return _createWrite(fileOffset, value);
   }
 
@@ -351,7 +351,7 @@ class VariableUseGenerator extends Generator {
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     Expression read = _createRead();
     Expression write = _createWrite(fileOffset, value);
     return new IfNullSet(read, write, forEffect: voidContext)
@@ -360,10 +360,10 @@ class VariableUseGenerator extends Generator {
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     Expression binary = _helper.forest
         .createBinary(offset, _createRead(), binaryOperator, value);
     return _createWrite(fileOffset, binary);
@@ -470,7 +470,7 @@ class PropertyAccessGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     return _helper.forest.createPropertySet(fileOffset, receiver, name, value,
         forEffect: voidContext);
   }
@@ -485,10 +485,10 @@ class PropertyAccessGenerator extends Generator {
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     return new CompoundPropertySet(receiver, name, binaryOperator, value,
         forEffect: voidContext,
         readOffset: fileOffset,
@@ -585,7 +585,7 @@ class ThisPropertyAccessGenerator extends Generator {
 
   ThisPropertyAccessGenerator(
       ExpressionGeneratorHelper helper, Token token, this.name,
-      {this.thisOffset, this.isNullAware: false})
+      {this.thisOffset, this.isNullAware = false})
       : super(helper, token);
 
   @override
@@ -616,7 +616,7 @@ class ThisPropertyAccessGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     _reportNonNullableInNullAwareWarningIfNeeded();
     return _createWrite(fileOffset, value, forEffect: voidContext);
   }
@@ -630,7 +630,7 @@ class ThisPropertyAccessGenerator extends Generator {
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     return new IfNullSet(
         _createRead(), _createWrite(offset, value, forEffect: voidContext),
         forEffect: voidContext)
@@ -639,10 +639,10 @@ class ThisPropertyAccessGenerator extends Generator {
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     _reportNonNullableInNullAwareWarningIfNeeded();
     Expression binary = _helper.forest
         .createBinary(offset, _createRead(), binaryOperator, value);
@@ -743,7 +743,7 @@ class NullAwarePropertyAccessGenerator extends Generator {
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     return new NullAwareIfNullSet(receiverExpression, name, value,
         forEffect: voidContext,
         readOffset: fileOffset,
@@ -754,10 +754,10 @@ class NullAwarePropertyAccessGenerator extends Generator {
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     return new NullAwareCompoundSet(
         receiverExpression, name, binaryOperator, value,
         readOffset: fileOffset,
@@ -769,7 +769,7 @@ class NullAwarePropertyAccessGenerator extends Generator {
 
   @override
   Expression buildPostfixIncrement(Name binaryOperator,
-      {int offset: TreeNode.noOffset, bool voidContext: false}) {
+      {int offset = TreeNode.noOffset, bool voidContext = false}) {
     return buildCompoundAssignment(
         binaryOperator, _forest.createIntLiteral(offset, 1),
         offset: offset, voidContext: voidContext, isPostIncDec: true);
@@ -880,7 +880,7 @@ class SuperPropertyAccessGenerator extends Generator {
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     return new IfNullSet(_createRead(), _createWrite(fileOffset, value),
         forEffect: voidContext)
       ..fileOffset = offset;
@@ -968,7 +968,7 @@ class IndexedAccessGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     VariableDeclarationImpl? variable;
     Expression receiverValue;
     if (isNullAware) {
@@ -990,7 +990,7 @@ class IndexedAccessGenerator extends Generator {
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     VariableDeclarationImpl? variable;
     Expression receiverValue;
     if (isNullAware) {
@@ -1016,10 +1016,10 @@ class IndexedAccessGenerator extends Generator {
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     VariableDeclarationImpl? variable;
     Expression receiverValue;
     if (isNullAware) {
@@ -1104,7 +1104,7 @@ class ThisIndexedAccessGenerator extends Generator {
 
   ThisIndexedAccessGenerator(
       ExpressionGeneratorHelper helper, Token token, this.index,
-      {this.thisOffset, this.isNullAware: false})
+      {this.thisOffset, this.isNullAware = false})
       : super(helper, token);
 
   @override
@@ -1131,7 +1131,7 @@ class ThisIndexedAccessGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     _reportNonNullableInNullAwareWarningIfNeeded();
     Expression receiver = _helper.forest.createThisExpression(fileOffset);
     return _forest.createIndexSet(fileOffset, receiver, index, value,
@@ -1140,7 +1140,7 @@ class ThisIndexedAccessGenerator extends Generator {
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     _reportNonNullableInNullAwareWarningIfNeeded();
     Expression receiver = _helper.forest.createThisExpression(fileOffset);
     return new IfNullIndexSet(receiver, index, value,
@@ -1153,10 +1153,10 @@ class ThisIndexedAccessGenerator extends Generator {
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     _reportNonNullableInNullAwareWarningIfNeeded();
     Expression receiver = _helper.forest.createThisExpression(fileOffset);
     return new CompoundIndexSet(receiver, index, binaryOperator, value,
@@ -1237,7 +1237,7 @@ class SuperIndexedAccessGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     Procedure? setter = this.setter;
     if (setter == null) {
       return _helper.buildUnresolvedError(indexSetName.text, fileOffset,
@@ -1262,7 +1262,7 @@ class SuperIndexedAccessGenerator extends Generator {
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     return new IfNullSuperIndexSet(getter, setter, index, value,
         readOffset: fileOffset,
         testOffset: offset,
@@ -1273,10 +1273,10 @@ class SuperIndexedAccessGenerator extends Generator {
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     Procedure? getter = this.getter;
     Procedure? setter = this.setter;
     if (getter == null || setter == null) {
@@ -1391,7 +1391,7 @@ class StaticAccessGenerator extends Generator {
 
   StaticAccessGenerator(ExpressionGeneratorHelper helper, Token token,
       this.targetName, this.parentBuilder, this.readTarget, this.writeTarget,
-      {this.typeOffset, this.isNullAware: false})
+      {this.typeOffset, this.isNullAware = false})
       // ignore: unnecessary_null_comparison
       : assert(targetName != null),
         assert(readTarget != null || writeTarget != null),
@@ -1406,7 +1406,7 @@ class StaticAccessGenerator extends Generator {
       MemberBuilder? getterBuilder,
       MemberBuilder? setterBuilder,
       {int? typeOffset,
-      bool isNullAware: false}) {
+      bool isNullAware = false}) {
     // If both [getterBuilder] and [setterBuilder] exist, they must both be
     // either top level (potentially from different libraries) or from the same
     // class/extension.
@@ -1494,7 +1494,7 @@ class StaticAccessGenerator extends Generator {
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     return new IfNullSet(_createRead(), _createWrite(offset, value),
         forEffect: voidContext)
       ..fileOffset = offset;
@@ -1742,7 +1742,7 @@ class ExtensionInstanceAccessGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     return _createWrite(fileOffset, value, forEffect: voidContext);
   }
 
@@ -1766,7 +1766,7 @@ class ExtensionInstanceAccessGenerator extends Generator {
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     return new IfNullSet(
         _createRead(), _createWrite(fileOffset, value, forEffect: voidContext),
         forEffect: voidContext)
@@ -1775,10 +1775,10 @@ class ExtensionInstanceAccessGenerator extends Generator {
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     Expression binary = _helper.forest
         .createBinary(offset, _createRead(), binaryOperator, value);
     return _createWrite(fileOffset, binary, forEffect: voidContext);
@@ -2074,7 +2074,7 @@ class ExplicitExtensionInstanceAccessGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     if (isNullAware) {
       VariableDeclarationImpl variable =
           _helper.createVariableDeclarationForValue(receiver);
@@ -2108,7 +2108,7 @@ class ExplicitExtensionInstanceAccessGenerator extends Generator {
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     if (isNullAware) {
       VariableDeclarationImpl variable =
           _helper.createVariableDeclarationForValue(receiver);
@@ -2137,10 +2137,10 @@ class ExplicitExtensionInstanceAccessGenerator extends Generator {
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     if (isNullAware) {
       VariableDeclarationImpl variable =
           _helper.createVariableDeclarationForValue(receiver);
@@ -2420,7 +2420,7 @@ class ExplicitExtensionIndexedAccessGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     if (writeTarget == null) {
       return _makeInvalidWrite(value);
     }
@@ -2458,7 +2458,7 @@ class ExplicitExtensionIndexedAccessGenerator extends Generator {
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     VariableDeclarationImpl? variable;
     Expression receiverValue;
     if (isNullAware) {
@@ -2490,10 +2490,10 @@ class ExplicitExtensionIndexedAccessGenerator extends Generator {
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     VariableDeclarationImpl? variable;
     Expression receiverValue;
     if (isNullAware) {
@@ -2612,33 +2612,33 @@ class ExplicitExtensionAccessGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     return _makeInvalidWrite(value);
   }
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     return _makeInvalidRead();
   }
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     return _makeInvalidRead();
   }
 
   @override
   Expression buildPostfixIncrement(Name binaryOperator,
-      {int offset: TreeNode.noOffset, bool voidContext: false}) {
+      {int offset = TreeNode.noOffset, bool voidContext = false}) {
     return _makeInvalidRead();
   }
 
   Generator _createInstanceAccess(Token token, Name name,
-      {bool isNullAware: false}) {
+      {bool isNullAware = false}) {
     Builder? getter = extensionBuilder.lookupLocalMemberByName(name);
     if (getter != null && getter.isStatic) {
       getter = null;
@@ -2787,13 +2787,13 @@ class LoadLibraryGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     return _makeInvalidWrite(value);
   }
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     Expression read = buildSimpleRead();
     Expression write = _makeInvalidWrite(value);
     return new IfNullSet(read, write, forEffect: voidContext)
@@ -2802,10 +2802,10 @@ class LoadLibraryGenerator extends Generator {
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     Expression binary = _helper.forest
         .createBinary(offset, buildSimpleRead(), binaryOperator, value);
     return _makeInvalidWrite(binary);
@@ -2863,7 +2863,7 @@ class DeferredAccessGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     return _helper.wrapInDeferredCheck(
         suffixGenerator.buildAssignment(value, voidContext: voidContext),
         prefixGenerator.prefix,
@@ -2872,7 +2872,7 @@ class DeferredAccessGenerator extends Generator {
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     return _helper.wrapInDeferredCheck(
         suffixGenerator.buildIfNullAssignment(value, type, offset,
             voidContext: voidContext),
@@ -2882,10 +2882,10 @@ class DeferredAccessGenerator extends Generator {
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     return _helper.wrapInDeferredCheck(
         suffixGenerator.buildCompoundAssignment(binaryOperator, value,
             offset: offset,
@@ -2898,7 +2898,7 @@ class DeferredAccessGenerator extends Generator {
 
   @override
   Expression buildPostfixIncrement(Name binaryOperator,
-      {int offset: TreeNode.noOffset, bool voidContext: false}) {
+      {int offset = TreeNode.noOffset, bool voidContext = false}) {
     return _helper.wrapInDeferredCheck(
         suffixGenerator.buildPostfixIncrement(binaryOperator,
             offset: offset, voidContext: voidContext),
@@ -3550,13 +3550,13 @@ abstract class AbstractReadOnlyAccessGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     return _makeInvalidWrite(value);
   }
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     Expression read = _createRead();
     Expression write = _makeInvalidWrite(value);
     return new IfNullSet(read, write, forEffect: voidContext)
@@ -3565,10 +3565,10 @@ abstract class AbstractReadOnlyAccessGenerator extends Generator {
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     Expression binary = _helper.forest
         .createBinary(offset, _createRead(), binaryOperator, value);
     return _makeInvalidWrite(binary);
@@ -3651,22 +3651,22 @@ abstract class ErroneousExpressionGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     return buildError(rhs: value, kind: UnresolvedKind.Setter);
   }
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: -1,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = -1,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     return buildError(rhs: value, kind: UnresolvedKind.Getter);
   }
 
   @override
   Expression buildPrefixIncrement(Name binaryOperator,
-      {int offset: -1, bool voidContext: false}) {
+      {int offset = -1, bool voidContext = false}) {
     return buildError(
         arguments: _forest.createArguments(
             fileOffset, <Expression>[_forest.createIntLiteral(offset, 1)]),
@@ -3676,7 +3676,7 @@ abstract class ErroneousExpressionGenerator extends Generator {
 
   @override
   Expression buildPostfixIncrement(Name binaryOperator,
-      {int offset: -1, bool voidContext: false}) {
+      {int offset = -1, bool voidContext = false}) {
     return buildError(
         arguments: _forest.createArguments(
             fileOffset, <Expression>[_forest.createIntLiteral(offset, 1)]),
@@ -3686,7 +3686,7 @@ abstract class ErroneousExpressionGenerator extends Generator {
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     return buildError(rhs: value, kind: UnresolvedKind.Setter);
   }
 
@@ -3785,16 +3785,16 @@ class UnresolvedNameGenerator extends ErroneousExpressionGenerator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     return _buildUnresolvedVariableAssignment(false, value);
   }
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     return _buildUnresolvedVariableAssignment(true, value);
   }
 
@@ -3844,34 +3844,34 @@ abstract class ContextAwareGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     return _makeInvalidWrite(value);
   }
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     return _makeInvalidWrite(value);
   }
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: -1,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = -1,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     return _makeInvalidWrite(value);
   }
 
   @override
   Expression buildPrefixIncrement(Name binaryOperator,
-      {int offset: -1, bool voidContext: false}) {
+      {int offset = -1, bool voidContext = false}) {
     return _makeInvalidWrite(null);
   }
 
   @override
   Expression buildPostfixIncrement(Name binaryOperator,
-      {int offset: -1, bool voidContext: false}) {
+      {int offset = -1, bool voidContext = false}) {
     return _makeInvalidWrite(null);
   }
 
@@ -4035,28 +4035,28 @@ class PrefixUseGenerator extends Generator {
   Expression buildSimpleRead() => _makeInvalidRead();
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     return _makeInvalidWrite(value);
   }
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     return _makeInvalidRead();
   }
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     return _makeInvalidRead();
   }
 
   @override
   Expression buildPostfixIncrement(Name binaryOperator,
-      {int offset: TreeNode.noOffset, bool voidContext: false}) {
+      {int offset = TreeNode.noOffset, bool voidContext = false}) {
     return _makeInvalidRead();
   }
 
@@ -4161,22 +4161,22 @@ class UnexpectedQualifiedUseGenerator extends Generator {
   Expression buildSimpleRead() => _makeInvalidRead(UnresolvedKind.Member);
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     return _makeInvalidWrite(value);
   }
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     return _makeInvalidRead(UnresolvedKind.Member);
   }
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     return _makeInvalidRead(UnresolvedKind.Member);
   }
 
@@ -4258,34 +4258,34 @@ class ParserErrorGenerator extends Generator {
   Expression buildSimpleRead() => buildProblem();
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     return buildProblem();
   }
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     return buildProblem();
   }
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     return buildProblem();
   }
 
   @override
   Expression buildPrefixIncrement(Name binaryOperator,
-      {int offset: TreeNode.noOffset, bool voidContext: false}) {
+      {int offset = TreeNode.noOffset, bool voidContext = false}) {
     return buildProblem();
   }
 
   @override
   Expression buildPostfixIncrement(Name binaryOperator,
-      {int offset: TreeNode.noOffset, bool voidContext: false}) {
+      {int offset = TreeNode.noOffset, bool voidContext = false}) {
     return buildProblem();
   }
 
@@ -4413,7 +4413,7 @@ class ThisAccessGenerator extends Generator {
 
   ThisAccessGenerator(ExpressionGeneratorHelper helper, Token token,
       this.isInitializer, this.inFieldInitializer, this.inLateFieldInitializer,
-      {this.isSuper: false})
+      {this.isSuper = false})
       : super(helper, token);
 
   @override
@@ -4603,34 +4603,34 @@ class ThisAccessGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     return buildAssignmentError();
   }
 
   @override
   Expression buildIfNullAssignment(Expression value, DartType type, int offset,
-      {bool voidContext: false}) {
+      {bool voidContext = false}) {
     return buildAssignmentError();
   }
 
   @override
   Expression buildCompoundAssignment(Name binaryOperator, Expression value,
-      {int offset: TreeNode.noOffset,
-      bool voidContext: false,
-      bool isPreIncDec: false,
-      bool isPostIncDec: false}) {
+      {int offset = TreeNode.noOffset,
+      bool voidContext = false,
+      bool isPreIncDec = false,
+      bool isPostIncDec = false}) {
     return buildAssignmentError();
   }
 
   @override
   Expression buildPrefixIncrement(Name binaryOperator,
-      {int offset: TreeNode.noOffset, bool voidContext: false}) {
+      {int offset = TreeNode.noOffset, bool voidContext = false}) {
     return buildAssignmentError();
   }
 
   @override
   Expression buildPostfixIncrement(Name binaryOperator,
-      {int offset: TreeNode.noOffset, bool voidContext: false}) {
+      {int offset = TreeNode.noOffset, bool voidContext = false}) {
     return buildAssignmentError();
   }
 
@@ -4816,7 +4816,7 @@ abstract class Selector {
 
   /// Applies this selector to [receiver].
   Expression_Generator withReceiver(Object? receiver, int operatorOffset,
-      {bool isNullAware: false});
+      {bool isNullAware = false});
 
   List<TypeBuilder>? get typeArguments => null;
 
@@ -4887,7 +4887,7 @@ class InvocationSelector extends Selector {
 
   @override
   Expression_Generator withReceiver(Object? receiver, int operatorOffset,
-      {bool isNullAware: false}) {
+      {bool isNullAware = false}) {
     if (receiver is Generator) {
       return receiver.buildSelectorAccess(this, operatorOffset, isNullAware);
     }
@@ -4930,7 +4930,7 @@ class PropertySelector extends Selector {
 
   @override
   Expression_Generator withReceiver(Object? receiver, int operatorOffset,
-      {bool isNullAware: false}) {
+      {bool isNullAware = false}) {
     if (receiver is Generator) {
       return receiver.buildSelectorAccess(this, operatorOffset, isNullAware);
     }
@@ -4972,7 +4972,7 @@ class AugmentSuperAccessGenerator extends Generator {
   }
 
   @override
-  Expression buildAssignment(Expression value, {bool voidContext: false}) {
+  Expression buildAssignment(Expression value, {bool voidContext = false}) {
     return _createWrite(fileOffset, value, forEffect: voidContext);
   }
 
diff --git a/pkg/front_end/lib/src/fasta/kernel/expression_generator_helper.dart b/pkg/front_end/lib/src/fasta/kernel/expression_generator_helper.dart
index e92251c1008..8eb515b6951 100644
--- a/pkg/front_end/lib/src/fasta/kernel/expression_generator_helper.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/expression_generator_helper.dart
@@ -50,7 +50,7 @@ abstract class ExpressionGeneratorHelper implements InferenceHelper {
 
   Forest get forest;
 
-  Constructor? lookupConstructor(Name name, {bool isSuper: false});
+  Constructor? lookupConstructor(Name name, {bool isSuper = false});
 
   Expression toValue(Object? node);
 
@@ -60,7 +60,7 @@ abstract class ExpressionGeneratorHelper implements InferenceHelper {
 
   Expression_Generator_Builder scopeLookup(
       Scope scope, String name, Token token,
-      {bool isQualified: false, PrefixBuilder? prefix});
+      {bool isQualified = false, PrefixBuilder? prefix});
 
   Expression_Generator_Initializer finishSend(Object receiver,
       List<TypeBuilder>? typeArguments, ArgumentsImpl arguments, int offset,
@@ -82,8 +82,8 @@ abstract class ExpressionGeneratorHelper implements InferenceHelper {
       [int charOffset = TreeNode.noOffset]);
 
   Expression buildStaticInvocation(Member target, Arguments arguments,
-      {Constness constness: Constness.implicit,
-      int charOffset: TreeNode.noOffset});
+      {Constness constness = Constness.implicit,
+      int charOffset = TreeNode.noOffset});
 
   Expression buildExtensionMethodInvocation(
       int fileOffset, Procedure target, Arguments arguments,
@@ -109,12 +109,12 @@ abstract class ExpressionGeneratorHelper implements InferenceHelper {
 
   Expression buildMethodInvocation(
       Expression receiver, Name name, Arguments arguments, int offset,
-      {bool isConstantExpression: false, bool isNullAware: false});
+      {bool isConstantExpression = false, bool isNullAware = false});
 
   Expression buildSuperInvocation(Name name, Arguments arguments, int offset,
-      {bool isConstantExpression: false,
-      bool isNullAware: false,
-      bool isImplicitCall: false});
+      {bool isConstantExpression = false,
+      bool isNullAware = false,
+      bool isImplicitCall = false});
 
   Expression buildConstructorInvocation(
       TypeDeclarationBuilder type,
@@ -137,12 +137,12 @@ abstract class ExpressionGeneratorHelper implements InferenceHelper {
   Expression buildProblemErrorIfConst(
       Message message, int charOffset, int length);
 
-  Message warnUnresolvedGet(Name name, int charOffset, {bool isSuper: false});
+  Message warnUnresolvedGet(Name name, int charOffset, {bool isSuper = false});
 
-  Message warnUnresolvedSet(Name name, int charOffset, {bool isSuper: false});
+  Message warnUnresolvedSet(Name name, int charOffset, {bool isSuper = false});
 
   Message warnUnresolvedMethod(Name name, int charOffset,
-      {bool isSuper: false});
+      {bool isSuper = false});
 
   void warnTypeArgumentsMismatch(String name, int expected, int charOffset);
 
@@ -169,7 +169,7 @@ abstract class ExpressionGeneratorHelper implements InferenceHelper {
   /// Creates a [VariableGet] of the [variable] using [charOffset] as the file
   /// offset of the created node.
   Expression createVariableGet(VariableDeclaration variable, int charOffset,
-      {bool forNullGuardedAccess: false});
+      {bool forNullGuardedAccess = false});
 
   /// Registers that [variable] is assigned to.
   ///
diff --git a/pkg/front_end/lib/src/fasta/kernel/forest.dart b/pkg/front_end/lib/src/fasta/kernel/forest.dart
index 11a5a181c5a..4996c9f3a43 100644
--- a/pkg/front_end/lib/src/fasta/kernel/forest.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/forest.dart
@@ -311,7 +311,7 @@ class Forest {
       Statement? expressionEffects,
       Expression body,
       Expression? problem,
-      {bool isAsync: false}) {
+      {bool isAsync = false}) {
     // ignore: unnecessary_null_comparison
     assert(fileOffset != null);
     return new ForInElement(variable, iterable, synthesizedAssignment,
@@ -328,7 +328,7 @@ class Forest {
       Statement? expressionEffects,
       MapLiteralEntry body,
       Expression? problem,
-      {bool isAsync: false}) {
+      {bool isAsync = false}) {
     // ignore: unnecessary_null_comparison
     assert(fileOffset != null);
     return new ForInMapEntry(variable, iterable, synthesizedAssignment,
@@ -534,7 +534,7 @@ class Forest {
 
   /// Return a representation of a return statement.
   Statement createReturnStatement(int fileOffset, Expression? expression,
-      {bool isArrow: true}) {
+      {bool isArrow = true}) {
     // ignore: unnecessary_null_comparison
     assert(fileOffset != null);
     return new ReturnStatementImpl(isArrow, expression)
@@ -649,11 +649,11 @@ class Forest {
   VariableDeclaration createVariableDeclaration(int fileOffset, String? name,
       {Expression? initializer,
       DartType? type,
-      bool isFinal: false,
-      bool isConst: false,
-      bool isInitializingFormal: false,
-      bool isCovariantByDeclaration: false,
-      bool isLocalFunction: false}) {
+      bool isFinal = false,
+      bool isConst = false,
+      bool isInitializingFormal = false,
+      bool isCovariantByDeclaration = false,
+      bool isLocalFunction = false}) {
     // ignore: unnecessary_null_comparison
     assert(fileOffset != null);
     return new VariableDeclarationImpl(name,
@@ -690,8 +690,8 @@ class Forest {
       List<VariableDeclaration>? positionalParameters,
       List<VariableDeclaration>? namedParameters,
       int? requiredParameterCount,
-      DartType returnType: const DynamicType(),
-      AsyncMarker asyncMarker: AsyncMarker.Sync,
+      DartType returnType = const DynamicType(),
+      AsyncMarker asyncMarker = AsyncMarker.Sync,
       AsyncMarker? dartAsyncMarker}) {
     // ignore: unnecessary_null_comparison
     assert(fileOffset != null);
@@ -779,7 +779,7 @@ class Forest {
 
   Expression createPropertySet(
       int fileOffset, Expression receiver, Name name, Expression value,
-      {required bool forEffect, bool readOnlyReceiver: false}) {
+      {required bool forEffect, bool readOnlyReceiver = false}) {
     // ignore: unnecessary_null_comparison
     assert(fileOffset != null);
     return new PropertySet(receiver, name, value,
diff --git a/pkg/front_end/lib/src/fasta/kernel/hierarchy/members_builder.dart b/pkg/front_end/lib/src/fasta/kernel/hierarchy/members_builder.dart
index 6a0c0479125..6207ebb790b 100644
--- a/pkg/front_end/lib/src/fasta/kernel/hierarchy/members_builder.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/hierarchy/members_builder.dart
@@ -137,14 +137,14 @@ class ClassMembersBuilder implements ClassHierarchyMembers {
   }
 
   @override
-  Member? getInterfaceMember(Class cls, Name name, {bool setter: false}) {
+  Member? getInterfaceMember(Class cls, Name name, {bool setter = false}) {
     return getNodeFromClass(cls)
         .getInterfaceMember(name, setter)
         ?.getMember(this);
   }
 
   ClassMember? getInterfaceClassMember(Class cls, Name name,
-      {bool setter: false}) {
+      {bool setter = false}) {
     return getNodeFromClass(cls).getInterfaceMember(name, setter);
   }
 
diff --git a/pkg/front_end/lib/src/fasta/kernel/hierarchy/mixin_inferrer.dart b/pkg/front_end/lib/src/fasta/kernel/hierarchy/mixin_inferrer.dart
index 8547b2516a2..007790ed443 100644
--- a/pkg/front_end/lib/src/fasta/kernel/hierarchy/mixin_inferrer.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/hierarchy/mixin_inferrer.dart
@@ -68,7 +68,7 @@ class TypeBuilderConstraintGatherer extends TypeConstraintGatherer
   }
 
   @override
-  Member? getInterfaceMember(Class class_, Name name, {bool setter: false}) {
+  Member? getInterfaceMember(Class class_, Name name, {bool setter = false}) {
     return null;
   }
 
diff --git a/pkg/front_end/lib/src/fasta/kernel/internal_ast.dart b/pkg/front_end/lib/src/fasta/kernel/internal_ast.dart
index 72950b347f7..0babbef8c0e 100644
--- a/pkg/front_end/lib/src/fasta/kernel/internal_ast.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/internal_ast.dart
@@ -356,7 +356,7 @@ class SwitchCaseImpl extends SwitchCase {
 
   SwitchCaseImpl(
       List<Expression> expressions, List<int> expressionOffsets, Statement body,
-      {bool isDefault: false, required this.hasLabel})
+      {bool isDefault = false, required this.hasLabel})
       // ignore: unnecessary_null_comparison
       : assert(hasLabel != null),
         super(expressions, expressionOffsets, body, isDefault: isDefault);
@@ -779,7 +779,7 @@ class FactoryConstructorInvocation extends StaticInvocation
   bool hasBeenInferred = false;
 
   FactoryConstructorInvocation(Procedure target, Arguments arguments,
-      {bool isConst: false})
+      {bool isConst = false})
       : super(target, arguments, isConst: isConst);
 
   @override
@@ -819,7 +819,7 @@ class TypeAliasedConstructorInvocation extends ConstructorInvocation
 
   TypeAliasedConstructorInvocation(
       this.typeAliasBuilder, Constructor target, Arguments arguments,
-      {bool isConst: false})
+      {bool isConst = false})
       : super(target, arguments, isConst: isConst);
 
   @override
@@ -859,7 +859,7 @@ class TypeAliasedFactoryInvocation extends StaticInvocation
 
   TypeAliasedFactoryInvocation(
       this.typeAliasBuilder, Procedure target, Arguments arguments,
-      {bool isConst: false})
+      {bool isConst = false})
       : super(target, arguments, isConst: isConst);
 
   @override
@@ -1019,7 +1019,7 @@ class IntJudgment extends IntLiteral implements ExpressionJudgment {
 
   IntJudgment(int value, this.literal) : super(value);
 
-  double? asDouble({bool negated: false}) {
+  double? asDouble({bool negated = false}) {
     if (value == 0 && negated) {
       return -0.0;
     }
@@ -1057,7 +1057,7 @@ class ShadowLargeIntLiteral extends IntLiteral implements ExpressionJudgment {
 
   ShadowLargeIntLiteral(this.literal, this.fileOffset) : super(0);
 
-  double? asDouble({bool negated: false}) {
+  double? asDouble({bool negated = false}) {
     BigInt? intValue = BigInt.tryParse(negated ? '-${literal}' : literal);
     if (intValue == null) {
       return null;
@@ -1070,7 +1070,7 @@ class ShadowLargeIntLiteral extends IntLiteral implements ExpressionJudgment {
         : null;
   }
 
-  int? asInt64({bool negated: false}) {
+  int? asInt64({bool negated = false}) {
     return int.tryParse(negated ? '-${literal}' : literal);
   }
 
@@ -1561,19 +1561,19 @@ class VariableDeclarationImpl extends VariableDeclaration {
   bool isStaticLate;
 
   VariableDeclarationImpl(String? name,
-      {this.forSyntheticToken: false,
-      bool hasDeclaredInitializer: false,
+      {this.forSyntheticToken = false,
+      bool hasDeclaredInitializer = false,
       Expression? initializer,
       DartType? type,
-      bool isFinal: false,
-      bool isConst: false,
-      bool isInitializingFormal: false,
-      bool isCovariantByDeclaration: false,
-      bool isLocalFunction: false,
-      bool isLate: false,
-      bool isRequired: false,
-      bool isLowered: false,
-      this.isStaticLate: false})
+      bool isFinal = false,
+      bool isConst = false,
+      bool isInitializingFormal = false,
+      bool isCovariantByDeclaration = false,
+      bool isLocalFunction = false,
+      bool isLate = false,
+      bool isRequired = false,
+      bool isLowered = false,
+      this.isStaticLate = false})
       : isImplicitlyTyped = type == null,
         isLocalFunction = isLocalFunction,
         super(name,
diff --git a/pkg/front_end/lib/src/fasta/kernel/kernel_helper.dart b/pkg/front_end/lib/src/fasta/kernel/kernel_helper.dart
index f5ad8bd3b4e..98914f94d24 100644
--- a/pkg/front_end/lib/src/fasta/kernel/kernel_helper.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/kernel_helper.dart
@@ -55,10 +55,10 @@ class DelayedDefaultValueCloner {
 
   DelayedDefaultValueCloner(
       this.original, this.synthesized, this._typeSubstitution,
-      {this.identicalSignatures: true,
-      List<int?>? positionalSuperParameters: null,
-      List<String>? namedSuperParameters: null,
-      this.isOutlineNode: false,
+      {this.identicalSignatures = true,
+      List<int?>? positionalSuperParameters = null,
+      List<String>? namedSuperParameters = null,
+      this.isOutlineNode = false,
       required LibraryBuilder libraryBuilder})
       : _positionalSuperParameters = positionalSuperParameters,
         _namedSuperParameters = namedSuperParameters,
diff --git a/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart b/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart
index befe20f30f4..fbc8923b68c 100644
--- a/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart
@@ -306,7 +306,7 @@ class KernelTarget extends TargetImplementation {
   }
 
   /// Return list of same size as input with possibly translated uris.
-  Uri getEntryPointUri(Uri entryPoint, {bool issueProblem: false}) {
+  Uri getEntryPointUri(Uri entryPoint, {bool issueProblem = false}) {
     String scheme = entryPoint.scheme;
     switch (scheme) {
       case "package":
@@ -593,7 +593,7 @@ class KernelTarget extends TargetImplementation {
   /// component.
   Future<BuildResult> buildComponent(
       {required MacroApplications? macroApplications,
-      bool verify: false}) async {
+      bool verify = false}) async {
     if (loader.first == null) {
       return new BuildResult(macroApplications: macroApplications);
     }
diff --git a/pkg/front_end/lib/src/fasta/kernel/transform_collections.dart b/pkg/front_end/lib/src/fasta/kernel/transform_collections.dart
index d055140ddf4..7690a929ada 100644
--- a/pkg/front_end/lib/src/fasta/kernel/transform_collections.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/transform_collections.dart
@@ -127,7 +127,7 @@ class CollectionTransformer extends Transformer {
 
   TreeNode _translateListOrSet(
       Expression node, DartType elementType, List<Expression> elements,
-      {bool isSet: false}) {
+      {bool isSet = false}) {
     // Translate elements in place up to the first non-expression, if any.
     int index = 0;
     for (; index < elements.length; ++index) {
@@ -712,7 +712,7 @@ class CollectionTransformer extends Transformer {
 
   TreeNode _translateConstListOrSet(
       Expression node, DartType elementType, List<Expression> elements,
-      {bool isSet: false}) {
+      {bool isSet = false}) {
     // Translate elements in place up to the first non-expression, if any.
     int i = 0;
     for (; i < elements.length; ++i) {
@@ -916,7 +916,7 @@ class CollectionTransformer extends Transformer {
 
   MapLiteral _createMapLiteral(int fileOffset, DartType keyType,
       DartType valueType, List<MapLiteralEntry> entries,
-      {bool isConst: false}) {
+      {bool isConst = false}) {
     // ignore: unnecessary_null_comparison
     assert(fileOffset != null);
     assert(fileOffset != TreeNode.noOffset);
@@ -927,7 +927,7 @@ class CollectionTransformer extends Transformer {
 
   ListLiteral _createListLiteral(
       int fileOffset, DartType elementType, List<Expression> elements,
-      {bool isConst: false}) {
+      {bool isConst = false}) {
     // ignore: unnecessary_null_comparison
     assert(fileOffset != null);
     assert(fileOffset != TreeNode.noOffset);
@@ -938,7 +938,7 @@ class CollectionTransformer extends Transformer {
 
   Expression _createSetLiteral(
       int fileOffset, DartType elementType, List<Expression> elements,
-      {bool isConst: false}) {
+      {bool isConst = false}) {
     // ignore: unnecessary_null_comparison
     assert(fileOffset != null);
     assert(fileOffset != TreeNode.noOffset);
@@ -1025,7 +1025,8 @@ class CollectionTransformer extends Transformer {
       ..isInvariant = true;
   }
 
-  Expression _createEqualsNull(Expression expression, {bool notEquals: false}) {
+  Expression _createEqualsNull(Expression expression,
+      {bool notEquals = false}) {
     // ignore: unnecessary_null_comparison
     assert(expression != null);
     assert(expression.fileOffset != TreeNode.noOffset);
@@ -1127,7 +1128,7 @@ class CollectionTransformer extends Transformer {
 
   ForInStatement _createForInStatement(int fileOffset,
       VariableDeclaration variable, Expression iterable, Statement body,
-      {bool isAsync: false}) {
+      {bool isAsync = false}) {
     // ignore: unnecessary_null_comparison
     assert(fileOffset != null);
     assert(fileOffset != TreeNode.noOffset);
diff --git a/pkg/front_end/lib/src/fasta/kernel/type_algorithms.dart b/pkg/front_end/lib/src/fasta/kernel/type_algorithms.dart
index 25d97012985..aa2503526a3 100644
--- a/pkg/front_end/lib/src/fasta/kernel/type_algorithms.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/type_algorithms.dart
@@ -954,7 +954,7 @@ List<NonSimplicityIssue> getNonSimplicityIssuesForTypeVariables(
 /// in the triplet is the context.
 List<NonSimplicityIssue> getNonSimplicityIssuesForDeclaration(
     TypeDeclarationBuilder declaration,
-    {bool performErrorRecovery: true}) {
+    {bool performErrorRecovery = true}) {
   List<NonSimplicityIssue> issues = <NonSimplicityIssue>[];
   if (declaration is ClassBuilder && declaration.typeVariables != null) {
     issues.addAll(getInboundReferenceIssues(declaration.typeVariables!));
diff --git a/pkg/front_end/lib/src/fasta/kernel/utils.dart b/pkg/front_end/lib/src/fasta/kernel/utils.dart
index cd42c678157..5cc8593228a 100644
--- a/pkg/front_end/lib/src/fasta/kernel/utils.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/utils.dart
@@ -102,8 +102,8 @@ Future<Null> writeComponentToFile(Component component, Uri uri,
 /// Serialize the libraries in [component] that match [filter].
 Uint8List serializeComponent(Component component,
     {bool Function(Library library)? filter,
-    bool includeSources: true,
-    bool includeOffsets: true}) {
+    bool includeSources = true,
+    bool includeOffsets = true}) {
   ByteSink byteSink = new ByteSink();
   BinaryPrinter printer = new BinaryPrinter(byteSink,
       libraryFilter: filter,
diff --git a/pkg/front_end/lib/src/fasta/kernel/verifier.dart b/pkg/front_end/lib/src/fasta/kernel/verifier.dart
index 40f67fab700..68923de2f80 100644
--- a/pkg/front_end/lib/src/fasta/kernel/verifier.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/verifier.dart
@@ -33,7 +33,7 @@ import 'redirecting_factory_body.dart'
         isRedirectingFactoryField;
 
 List<LocatedMessage> verifyComponent(Component component, Target target,
-    {bool? isOutline, bool? afterConst, bool skipPlatform: false}) {
+    {bool? isOutline, bool? afterConst, bool skipPlatform = false}) {
   FastaVerifyingVisitor verifier = new FastaVerifyingVisitor(target,
       isOutline: isOutline, afterConst: afterConst, skipPlatform: skipPlatform);
   component.accept(verifier);
@@ -526,7 +526,7 @@ class FastaVerifyingVisitor extends VerifyingVisitor {
 }
 
 void verifyGetStaticType(TypeEnvironment env, Component component,
-    {bool skipPlatform: false}) {
+    {bool skipPlatform = false}) {
   component.accept(new FastaVerifyGetStaticType(env, skipPlatform));
 }
 
diff --git a/pkg/front_end/lib/src/fasta/loader.dart b/pkg/front_end/lib/src/fasta/loader.dart
index 4173b42a6e7..116eb5c44b9 100644
--- a/pkg/front_end/lib/src/fasta/loader.dart
+++ b/pkg/front_end/lib/src/fasta/loader.dart
@@ -27,10 +27,10 @@ abstract class Loader {
   /// intrinsic severity of the message.
   FormattedMessage? addProblem(
       Message message, int charOffset, int length, Uri? fileUri,
-      {bool wasHandled: false,
+      {bool wasHandled = false,
       List<LocatedMessage>? context,
       Severity? severity,
-      bool problemOnLibrary: false,
+      bool problemOnLibrary = false,
       List<Uri>? involvedFiles});
 
   ClassBuilder computeClassBuilderFromTargetClass(Class cls);
diff --git a/pkg/front_end/lib/src/fasta/modifier.dart b/pkg/front_end/lib/src/fasta/modifier.dart
index 80d44c9c8fb..ad81d9e09c4 100644
--- a/pkg/front_end/lib/src/fasta/modifier.dart
+++ b/pkg/front_end/lib/src/fasta/modifier.dart
@@ -120,7 +120,7 @@ class Modifier {
 
   /// Returns [modifier] with [abstractMask] added if [isAbstract] and
   /// [modifiers] doesn't contain [externalMask].
-  static int addAbstractMask(int modifiers, {bool isAbstract: false}) {
+  static int addAbstractMask(int modifiers, {bool isAbstract = false}) {
     if (isAbstract && (modifiers & externalMask) == 0) {
       modifiers |= abstractMask;
     }
diff --git a/pkg/front_end/lib/src/fasta/scope.dart b/pkg/front_end/lib/src/fasta/scope.dart
index f7b1b475c2f..3b448ea11d3 100644
--- a/pkg/front_end/lib/src/fasta/scope.dart
+++ b/pkg/front_end/lib/src/fasta/scope.dart
@@ -105,11 +105,11 @@ class Scope extends MutableScope {
       Set<ExtensionBuilder>? extensions,
       Scope? parent,
       required String debugName,
-      this.isModifiable: true})
+      this.isModifiable = true})
       : super(local, setters = setters ?? const <String, MemberBuilder>{},
             extensions, parent, debugName);
 
-  Scope.top({bool isModifiable: false})
+  Scope.top({bool isModifiable = false})
       : this(
             local: <String, Builder>{},
             setters: <String, MemberBuilder>{},
@@ -123,7 +123,7 @@ class Scope extends MutableScope {
             debugName: "immutable",
             isModifiable: false);
 
-  Scope.nested(Scope parent, String debugName, {bool isModifiable: true})
+  Scope.nested(Scope parent, String debugName, {bool isModifiable = true})
       : this(
             local: <String, Builder>{},
             setters: <String, MemberBuilder>{},
@@ -368,7 +368,7 @@ class Scope extends MutableScope {
     super._extensions = scope._extensions;
   }
 
-  Scope createNestedScope(String debugName, {bool isModifiable: true}) {
+  Scope createNestedScope(String debugName, {bool isModifiable = true}) {
     return new Scope.nested(this, debugName, isModifiable: isModifiable);
   }
 
@@ -426,7 +426,7 @@ class Scope extends MutableScope {
   }
 
   Builder? lookup(String name, int charOffset, Uri fileUri,
-      {bool isInstanceScope: true}) {
+      {bool isInstanceScope = true}) {
     recordUse(name, charOffset);
     Builder? builder =
         lookupIn(name, charOffset, fileUri, _local, isInstanceScope);
@@ -443,7 +443,7 @@ class Scope extends MutableScope {
   }
 
   Builder? lookupSetter(String name, int charOffset, Uri fileUri,
-      {bool isInstanceScope: true}) {
+      {bool isInstanceScope = true}) {
     recordUse(name, charOffset);
     Builder? builder =
         lookupIn(name, charOffset, fileUri, _setters, isInstanceScope);
@@ -733,7 +733,7 @@ class ConstructorScope {
 
 abstract class LazyScope extends Scope {
   LazyScope(Map<String, Builder> local, Map<String, MemberBuilder> setters,
-      Scope? parent, String debugName, {bool isModifiable: true})
+      Scope? parent, String debugName, {bool isModifiable = true})
       : super(
             local: local,
             setters: setters,
diff --git a/pkg/front_end/lib/src/fasta/source/diet_listener.dart b/pkg/front_end/lib/src/fasta/source/diet_listener.dart
index ea7ffbb039a..b186ca4cbab 100644
--- a/pkg/front_end/lib/src/fasta/source/diet_listener.dart
+++ b/pkg/front_end/lib/src/fasta/source/diet_listener.dart
@@ -1212,7 +1212,7 @@ class DietListener extends StackListenerImpl {
 
   @override
   void addProblem(Message message, int charOffset, int length,
-      {bool wasHandled: false, List<LocatedMessage>? context}) {
+      {bool wasHandled = false, List<LocatedMessage>? context}) {
     libraryBuilder.addProblem(message, charOffset, length, uri,
         wasHandled: wasHandled, context: context);
   }
diff --git a/pkg/front_end/lib/src/fasta/source/name_scheme.dart b/pkg/front_end/lib/src/fasta/source/name_scheme.dart
index 65bcfe7f32f..1e7033f6264 100644
--- a/pkg/front_end/lib/src/fasta/source/name_scheme.dart
+++ b/pkg/front_end/lib/src/fasta/source/name_scheme.dart
@@ -48,9 +48,9 @@ class NameScheme {
   static String createFieldName(FieldNameType type, String name,
       {required bool isInstanceMember,
       required String? className,
-      bool isExtensionMethod: false,
+      bool isExtensionMethod = false,
       String? extensionName,
-      bool isSynthesized: false}) {
+      bool isSynthesized = false}) {
     assert(isSynthesized || type == FieldNameType.Field,
         "Unexpected field name type for non-synthesized field: $type");
     // ignore: unnecessary_null_comparison
diff --git a/pkg/front_end/lib/src/fasta/source/outline_builder.dart b/pkg/front_end/lib/src/fasta/source/outline_builder.dart
index 0cc3be5150a..0d80330e0ee 100644
--- a/pkg/front_end/lib/src/fasta/source/outline_builder.dart
+++ b/pkg/front_end/lib/src/fasta/source/outline_builder.dart
@@ -3542,7 +3542,7 @@ class OutlineBuilder extends StackListenerImpl {
 
   @override
   void addProblem(Message message, int charOffset, int length,
-      {bool wasHandled: false, List<LocatedMessage>? context}) {
+      {bool wasHandled = false, List<LocatedMessage>? context}) {
     libraryBuilder.addProblem(message, charOffset, length, uri,
         wasHandled: wasHandled, context: context);
   }
diff --git a/pkg/front_end/lib/src/fasta/source/source_class_builder.dart b/pkg/front_end/lib/src/fasta/source/source_class_builder.dart
index b4694d60397..07ba74ef7b9 100644
--- a/pkg/front_end/lib/src/fasta/source/source_class_builder.dart
+++ b/pkg/front_end/lib/src/fasta/source/source_class_builder.dart
@@ -414,7 +414,7 @@ class SourceClassBuilder extends ClassBuilderImpl
   /// builder.
   ///
   /// If [isSuper] is `true`, constructors in the superclass are searched.
-  Constructor? lookupConstructor(Name name, {bool isSuper: false}) {
+  Constructor? lookupConstructor(Name name, {bool isSuper = false}) {
     if (name.text == "new") {
       name = new Name("", name.library);
     }
@@ -1280,7 +1280,7 @@ class SourceClassBuilder extends ClassBuilderImpl
 
   void reportVariancePositionIfInvalid(
       int variance, TypeParameter typeParameter, Uri fileUri, int fileOffset,
-      {bool isReturnType: false}) {
+      {bool isReturnType = false}) {
     SourceLibraryBuilder library = this.libraryBuilder;
     if (!typeParameter.isLegacyCovariant &&
         !Variance.greaterThanOrEqual(variance, typeParameter.variance)) {
diff --git a/pkg/front_end/lib/src/fasta/source/source_field_builder.dart b/pkg/front_end/lib/src/fasta/source/source_field_builder.dart
index d5b5a8014ed..6f1a6b7594d 100644
--- a/pkg/front_end/lib/src/fasta/source/source_field_builder.dart
+++ b/pkg/front_end/lib/src/fasta/source/source_field_builder.dart
@@ -961,7 +961,7 @@ abstract class AbstractLateFieldEncoding implements FieldEncoding {
   /// expression that promotes the expression to [_type]. This is needed for a
   /// sound encoding of fields with type variable type of undetermined
   /// nullability.
-  Expression _createFieldRead({bool needsPromotion: false}) {
+  Expression _createFieldRead({bool needsPromotion = false}) {
     assert(_type != null, "Type has not been computed for field $name.");
     if (needsPromotion) {
       VariableDeclaration variable = new VariableDeclaration.forValue(
@@ -1434,7 +1434,7 @@ class _SynthesizedFieldClassMember implements ClassMember {
   final bool isInternalImplementation;
 
   _SynthesizedFieldClassMember(this.fieldBuilder, this._member, this._kind,
-      {this.forSetter: false, required this.isInternalImplementation})
+      {this.forSetter = false, required this.isInternalImplementation})
       // ignore: unnecessary_null_comparison
       : assert(isInternalImplementation != null);
 
diff --git a/pkg/front_end/lib/src/fasta/source/source_library_builder.dart b/pkg/front_end/lib/src/fasta/source/source_library_builder.dart
index a91f3fa8f3b..3279ee8cc83 100644
--- a/pkg/front_end/lib/src/fasta/source/source_library_builder.dart
+++ b/pkg/front_end/lib/src/fasta/source/source_library_builder.dart
@@ -563,7 +563,7 @@ class SourceLibraryBuilder extends LibraryBuilderImpl {
   /// [offset] and [length] refers to the offset and length of the source code
   /// specifying the language version.
   void registerExplicitLanguageVersion(Version version,
-      {int offset: 0, int length: noLength}) {
+      {int offset = 0, int length = noLength}) {
     if (_languageVersion.isExplicit) {
       // If more than once language version exists we use the first.
       return;
@@ -600,7 +600,7 @@ class SourceLibraryBuilder extends LibraryBuilderImpl {
   }
 
   void beginNestedDeclaration(TypeParameterScopeKind kind, String name,
-      {bool hasMembers: true}) {
+      {bool hasMembers = true}) {
     currentTypeParameterScopeBuilder =
         currentTypeParameterScopeBuilder.createNested(kind, name, hasMembers);
   }
@@ -624,7 +624,7 @@ class SourceLibraryBuilder extends LibraryBuilderImpl {
 
   bool uriIsValid(Uri uri) => !uri.isScheme(MALFORMED_URI_SCHEME);
 
-  Uri resolve(Uri baseUri, String? uri, int uriOffset, {isPart: false}) {
+  Uri resolve(Uri baseUri, String? uri, int uriOffset, {isPart = false}) {
     if (uri == null) {
       addProblem(messageExpectedUri, uriOffset, noLength, fileUri);
       return new Uri(scheme: MALFORMED_URI_SCHEME);
@@ -650,7 +650,7 @@ class SourceLibraryBuilder extends LibraryBuilderImpl {
   }
 
   String? computeAndValidateConstructorName(Object? name, int charOffset,
-      {isFactory: false}) {
+      {isFactory = false}) {
     String className = currentTypeParameterScopeBuilder.name;
     String prefix;
     String? suffix;
@@ -1046,7 +1046,7 @@ class SourceLibraryBuilder extends LibraryBuilderImpl {
 
   /// Builds the core AST structure of this library as needed for the outline.
   Library buildOutlineNodes(LibraryBuilder coreLibrary,
-      {bool modifyTarget: true}) {
+      {bool modifyTarget = true}) {
     // TODO(johnniwinther): Avoid the need to process patch libraries before
     // the origin. Currently, settings performed by the patch are overridden
     // by the origin. For instance, the `Map` class is abstract in the origin
@@ -1703,10 +1703,10 @@ class SourceLibraryBuilder extends LibraryBuilderImpl {
   @override
   FormattedMessage? addProblem(
       Message message, int charOffset, int length, Uri? fileUri,
-      {bool wasHandled: false,
+      {bool wasHandled = false,
       List<LocatedMessage>? context,
       Severity? severity,
-      bool problemOnLibrary: false}) {
+      bool problemOnLibrary = false}) {
     FormattedMessage? formattedMessage = super.addProblem(
         message, charOffset, length, fileUri,
         wasHandled: wasHandled,
@@ -2116,7 +2116,7 @@ class SourceLibraryBuilder extends LibraryBuilderImpl {
       {List<MetadataBuilder>? metadata,
       String? name,
       List<TypeVariableBuilder>? typeVariables,
-      int modifiers: 0,
+      int modifiers = 0,
       List<TypeBuilder>? interfaces,
       required bool isMacro,
       required bool isAugmentation}) {
@@ -3201,7 +3201,7 @@ class SourceLibraryBuilder extends LibraryBuilderImpl {
   @override
   Builder computeAmbiguousDeclaration(
       String name, Builder declaration, Builder other, int charOffset,
-      {bool isExport: false, bool isImport: false}) {
+      {bool isExport = false, bool isImport = false}) {
     // TODO(ahe): Can I move this to Scope or Prefix?
     if (declaration == other) return declaration;
     if (declaration is InvalidTypeDeclarationBuilder) return declaration;
diff --git a/pkg/front_end/lib/src/fasta/source/source_loader.dart b/pkg/front_end/lib/src/fasta/source/source_loader.dart
index ff9e1ae6e61..b8510a28a7d 100644
--- a/pkg/front_end/lib/src/fasta/source/source_loader.dart
+++ b/pkg/front_end/lib/src/fasta/source/source_loader.dart
@@ -323,7 +323,7 @@ class SourceLoader extends Loader {
       SourceLibraryBuilder? origin,
       Library? referencesFrom,
       bool? referenceIsPartOwner,
-      bool isAugmentation: false}) {
+      bool isAugmentation = false}) {
     return new SourceLibraryBuilder(
         importUri: importUri,
         fileUri: fileUri,
@@ -561,7 +561,7 @@ class SourceLoader extends Loader {
       LibraryBuilder? origin,
       Library? referencesFrom,
       bool? referenceIsPartOwner,
-      bool isAugmentation: false}) {
+      bool isAugmentation = false}) {
     LibraryBuilder libraryBuilder = _read(uri,
         fileUri: fileUri,
         origin: origin,
@@ -624,7 +624,7 @@ class SourceLoader extends Loader {
       LibraryBuilder? origin,
       Library? referencesFrom,
       bool? referenceIsPartOwner,
-      bool isAugmentation: false}) {
+      bool isAugmentation = false}) {
     LibraryBuilder? libraryBuilder = _builders[uri];
     if (libraryBuilder == null) {
       if (target.dillTarget.isLoaded) {
@@ -691,10 +691,10 @@ class SourceLoader extends Loader {
   @override
   FormattedMessage? addProblem(
       Message message, int charOffset, int length, Uri? fileUri,
-      {bool wasHandled: false,
+      {bool wasHandled = false,
       List<LocatedMessage>? context,
       Severity? severity,
-      bool problemOnLibrary: false,
+      bool problemOnLibrary = false,
       List<Uri>? involvedFiles}) {
     return addMessage(message, charOffset, length, fileUri, severity,
         wasHandled: wasHandled,
@@ -716,9 +716,9 @@ class SourceLoader extends Loader {
   /// [wasHandled] is false.
   FormattedMessage? addMessage(Message message, int charOffset, int length,
       Uri? fileUri, Severity? severity,
-      {bool wasHandled: false,
+      {bool wasHandled = false,
       List<LocatedMessage>? context,
-      bool problemOnLibrary: false,
+      bool problemOnLibrary = false,
       List<Uri>? involvedFiles}) {
     assert(
         fileUri != missingUri, "Message unexpectedly reported on missing uri.");
@@ -819,7 +819,7 @@ severity: $severity
       templateSourceOutlineSummary;
 
   Future<Token> tokenize(SourceLibraryBuilder libraryBuilder,
-      {bool suppressLexicalErrors: false}) async {
+      {bool suppressLexicalErrors = false}) async {
     target.benchmarker?.beginSubdivide(BenchmarkSubdivides.tokenize);
     Uri fileUri = libraryBuilder.fileUri;
 
@@ -2416,16 +2416,16 @@ severity: $severity
 
   Expression instantiateNoSuchMethodError(
       Expression receiver, String name, Arguments arguments, int offset,
-      {bool isMethod: false,
-      bool isGetter: false,
-      bool isSetter: false,
-      bool isField: false,
-      bool isLocalVariable: false,
-      bool isDynamic: false,
-      bool isSuper: false,
-      bool isStatic: false,
-      bool isConstructor: false,
-      bool isTopLevel: false}) {
+      {bool isMethod = false,
+      bool isGetter = false,
+      bool isSetter = false,
+      bool isField = false,
+      bool isLocalVariable = false,
+      bool isDynamic = false,
+      bool isSuper = false,
+      bool isStatic = false,
+      bool isConstructor = false,
+      bool isTopLevel = false}) {
     return target.backendTarget.instantiateNoSuchMethodError(
         coreTypes, receiver, name, arguments, offset,
         isMethod: isMethod,
diff --git a/pkg/front_end/lib/src/fasta/source/source_procedure_builder.dart b/pkg/front_end/lib/src/fasta/source/source_procedure_builder.dart
index 4e65a5d1255..d527c0b4df6 100644
--- a/pkg/front_end/lib/src/fasta/source/source_procedure_builder.dart
+++ b/pkg/front_end/lib/src/fasta/source/source_procedure_builder.dart
@@ -88,7 +88,7 @@ class SourceProcedureBuilder extends SourceFunctionBuilderImpl
       {required bool isExtensionMember,
       required bool isInstanceMember,
       String? nativeMethodName,
-      bool isSynthetic: false})
+      bool isSynthetic = false})
       // ignore: unnecessary_null_comparison
       : assert(isExtensionMember != null),
         // ignore: unnecessary_null_comparison
diff --git a/pkg/front_end/lib/src/fasta/ticker.dart b/pkg/front_end/lib/src/fasta/ticker.dart
index 3c9d9c58a26..a3d0c6922c0 100644
--- a/pkg/front_end/lib/src/fasta/ticker.dart
+++ b/pkg/front_end/lib/src/fasta/ticker.dart
@@ -11,7 +11,7 @@ class Ticker {
 
   late Duration previousTick;
 
-  Ticker({this.isVerbose: true}) {
+  Ticker({this.isVerbose = true}) {
     previousTick = sw.elapsed;
   }
 
diff --git a/pkg/front_end/lib/src/fasta/type_inference/inference_visitor.dart b/pkg/front_end/lib/src/fasta/type_inference/inference_visitor.dart
index dcc74a467cb..ad31c1ed999 100644
--- a/pkg/front_end/lib/src/fasta/type_inference/inference_visitor.dart
+++ b/pkg/front_end/lib/src/fasta/type_inference/inference_visitor.dart
@@ -58,7 +58,7 @@ abstract class InferenceVisitor {
   /// the expression type and calls the appropriate specialized "infer" method.
   ExpressionInferenceResult inferExpression(
       Expression expression, DartType typeContext, bool typeNeeded,
-      {bool isVoidAllowed: false, bool forEffect: false});
+      {bool isVoidAllowed = false, bool forEffect = false});
 
   /// Performs type inference on the given [statement].
   ///
@@ -111,7 +111,7 @@ class InferenceVisitorImpl extends InferenceVisitorBase
 
   ExpressionInferenceResult _inferExpression(
       Expression expression, DartType typeContext, bool typeNeeded,
-      {bool isVoidAllowed: false, bool forEffect: false}) {
+      {bool isVoidAllowed = false, bool forEffect = false}) {
     registerIfUnreachableForTesting(expression);
 
     // `null` should never be used as the type context.  An instance of
@@ -166,7 +166,7 @@ class InferenceVisitorImpl extends InferenceVisitorBase
   @override
   ExpressionInferenceResult inferExpression(
       Expression expression, DartType typeContext, bool typeNeeded,
-      {bool isVoidAllowed: false, bool forEffect: false}) {
+      {bool isVoidAllowed = false, bool forEffect = false}) {
     ExpressionInferenceResult result = _inferExpression(
         expression, typeContext, typeNeeded,
         isVoidAllowed: isVoidAllowed, forEffect: forEffect);
@@ -186,7 +186,7 @@ class InferenceVisitorImpl extends InferenceVisitorBase
 
   ExpressionInferenceResult inferNullAwareExpression(
       Expression expression, DartType typeContext, bool typeNeeded,
-      {bool isVoidAllowed: false, bool forEffect: false}) {
+      {bool isVoidAllowed = false, bool forEffect = false}) {
     ExpressionInferenceResult result = _inferExpression(
         expression, typeContext, typeNeeded,
         isVoidAllowed: isVoidAllowed, forEffect: forEffect);
@@ -1246,7 +1246,7 @@ class InferenceVisitorImpl extends InferenceVisitorBase
       VariableDeclaration variable,
       Expression iterable,
       Statement? expressionEffects,
-      {bool isAsync: false}) {
+      {bool isAsync = false}) {
     DartType elementType;
     bool typeNeeded = false;
     bool typeChecksNeeded = !isTopLevel;
@@ -1310,7 +1310,7 @@ class InferenceVisitorImpl extends InferenceVisitorBase
 
   ExpressionInferenceResult inferForInIterable(
       Expression iterable, DartType elementType, bool typeNeeded,
-      {bool isAsync: false}) {
+      {bool isAsync = false}) {
     Class iterableClass =
         isAsync ? coreTypes.streamClass : coreTypes.iterableClass;
     DartType context =
@@ -1378,7 +1378,7 @@ class InferenceVisitorImpl extends InferenceVisitorBase
       Expression iterable,
       Expression? syntheticAssignment,
       Statement? expressionEffects,
-      {bool isAsync: false,
+      {bool isAsync = false,
       required bool hasProblem}) {
     // ignore: unnecessary_null_comparison
     assert(hasProblem != null);
@@ -6771,7 +6771,7 @@ class InferenceVisitorImpl extends InferenceVisitorBase
         result.add(isSetVariable);
       }
 
-      Expression createVariableRead({bool needsPromotion: false}) {
+      Expression createVariableRead({bool needsPromotion = false}) {
         if (needsPromotion) {
           return new VariableGet(node, node.type)..fileOffset = fileOffset;
         } else {
diff --git a/pkg/front_end/lib/src/fasta/type_inference/inference_visitor_base.dart b/pkg/front_end/lib/src/fasta/type_inference/inference_visitor_base.dart
index b6cc2f09f00..58f249dd6b7 100644
--- a/pkg/front_end/lib/src/fasta/type_inference/inference_visitor_base.dart
+++ b/pkg/front_end/lib/src/fasta/type_inference/inference_visitor_base.dart
@@ -422,8 +422,8 @@ abstract class InferenceVisitorBase implements InferenceVisitor {
       {int? fileOffset,
       DartType? declaredContextType,
       DartType? runtimeCheckedType,
-      bool isVoidAllowed: false,
-      bool coerceExpression: true,
+      bool isVoidAllowed = false,
+      bool coerceExpression = true,
       Template<Message Function(DartType, DartType, bool)>? errorTemplate,
       Template<Message Function(DartType, DartType, bool)>?
           nullabilityErrorTemplate,
@@ -457,8 +457,8 @@ abstract class InferenceVisitorBase implements InferenceVisitor {
       {int? fileOffset,
       DartType? declaredContextType,
       DartType? runtimeCheckedType,
-      bool isVoidAllowed: false,
-      bool coerceExpression: true,
+      bool isVoidAllowed = false,
+      bool coerceExpression = true,
       Template<Message Function(DartType, DartType, bool)>? errorTemplate,
       Template<Message Function(DartType, DartType, bool)>?
           nullabilityErrorTemplate,
@@ -950,9 +950,9 @@ abstract class InferenceVisitorBase implements InferenceVisitor {
   /// reporting that the receiver does not have a member by the given name.
   ObjectAccessTarget? _findExtensionMember(
       DartType receiverType, Class classNode, Name name, int fileOffset,
-      {bool setter: false,
+      {bool setter = false,
       ObjectAccessTarget? defaultTarget,
-      bool isPotentiallyNullableAccess: false}) {
+      bool isPotentiallyNullableAccess = false}) {
     Name otherName = name;
     bool otherIsSetter;
     if (name == indexGetName) {
@@ -1109,8 +1109,8 @@ abstract class InferenceVisitorBase implements InferenceVisitor {
   ObjectAccessTarget findInterfaceMember(
       DartType receiverType, Name name, int fileOffset,
       {required CallSiteAccessKind callSiteAccessKind,
-      bool instrumented: true,
-      bool includeExtensionMethods: false}) {
+      bool instrumented = true,
+      bool includeExtensionMethods = false}) {
     // ignore: unnecessary_null_comparison
     assert(receiverType != null && isKnown(receiverType));
 
@@ -1408,7 +1408,7 @@ abstract class InferenceVisitorBase implements InferenceVisitor {
   /// based on the static type of the initializer expression, given by
   /// [initializerType].
   DartType inferDeclarationType(DartType initializerType,
-      {bool forSyntheticVariable: false}) {
+      {bool forSyntheticVariable = false}) {
     if (forSyntheticVariable) {
       return normalizeNullabilityInLibrary(
           initializerType, libraryBuilder.library);
@@ -1463,13 +1463,13 @@ abstract class InferenceVisitorBase implements InferenceVisitor {
       FunctionType calleeType,
       ArgumentsImpl arguments,
       {List<VariableDeclaration>? hoistedExpressions,
-      bool isSpecialCasedBinaryOperator: false,
-      bool isSpecialCasedTernaryOperator: false,
+      bool isSpecialCasedBinaryOperator = false,
+      bool isSpecialCasedTernaryOperator = false,
       DartType? receiverType,
-      bool skipTypeArgumentInference: false,
-      bool isConst: false,
-      bool isImplicitExtensionMember: false,
-      bool isImplicitCall: false,
+      bool skipTypeArgumentInference = false,
+      bool isConst = false,
+      bool isImplicitExtensionMember = false,
+      bool isImplicitCall = false,
       Member? staticTarget,
       bool isExtensionMemberInvocation = false}) {
     int extensionTypeParameterCount = getExtensionTypeParameterCount(arguments);
@@ -1510,13 +1510,13 @@ abstract class InferenceVisitorBase implements InferenceVisitor {
       FunctionType calleeType,
       Arguments arguments,
       List<VariableDeclaration>? hoistedExpressions,
-      {bool isSpecialCasedBinaryOperator: false,
-      bool isSpecialCasedTernaryOperator: false,
+      {bool isSpecialCasedBinaryOperator = false,
+      bool isSpecialCasedTernaryOperator = false,
       DartType? receiverType,
-      bool skipTypeArgumentInference: false,
-      bool isConst: false,
-      bool isImplicitExtensionMember: false,
-      bool isImplicitCall: false,
+      bool skipTypeArgumentInference = false,
+      bool isConst = false,
+      bool isImplicitExtensionMember = false,
+      bool isImplicitCall = false,
       Member? staticTarget}) {
     FunctionType extensionFunctionType = new FunctionType(
         [calleeType.positionalParameters.first],
@@ -1587,15 +1587,15 @@ abstract class InferenceVisitorBase implements InferenceVisitor {
       FunctionType calleeType,
       ArgumentsImpl arguments,
       List<VariableDeclaration>? hoistedExpressions,
-      {bool isSpecialCasedBinaryOperator: false,
-      bool isSpecialCasedTernaryOperator: false,
+      {bool isSpecialCasedBinaryOperator = false,
+      bool isSpecialCasedTernaryOperator = false,
       DartType? receiverType,
-      bool skipTypeArgumentInference: false,
-      bool isConst: false,
-      bool isImplicitExtensionMember: false,
+      bool skipTypeArgumentInference = false,
+      bool isConst = false,
+      bool isImplicitExtensionMember = false,
       required bool isImplicitCall,
       Member? staticTarget,
-      bool isExtensionMemberInvocation: false}) {
+      bool isExtensionMemberInvocation = false}) {
     // [receiverType] must be provided for special-cased operators.
     assert(!isSpecialCasedBinaryOperator && !isSpecialCasedTernaryOperator ||
         receiverType != null);
diff --git a/pkg/front_end/lib/src/fasta/type_inference/object_access_target.dart b/pkg/front_end/lib/src/fasta/type_inference/object_access_target.dart
index 2d921c82014..8f3d3ed3b1a 100644
--- a/pkg/front_end/lib/src/fasta/type_inference/object_access_target.dart
+++ b/pkg/front_end/lib/src/fasta/type_inference/object_access_target.dart
@@ -626,7 +626,7 @@ class ExtensionAccessTarget extends ObjectAccessTarget {
 
   ExtensionAccessTarget(this.receiverType, this.member, this.tearoffTarget,
       this.extensionMethodKind, this.inferredExtensionTypeArguments,
-      {bool isPotentiallyNullable: false})
+      {bool isPotentiallyNullable = false})
       : super.internal(isPotentiallyNullable
             ? ObjectAccessTargetKind.nullableExtensionMember
             : ObjectAccessTargetKind.extensionMember);
diff --git a/pkg/front_end/lib/src/fasta/type_inference/type_constraint_gatherer.dart b/pkg/front_end/lib/src/fasta/type_inference/type_constraint_gatherer.dart
index ec9b881314e..a7b860e750d 100644
--- a/pkg/front_end/lib/src/fasta/type_inference/type_constraint_gatherer.dart
+++ b/pkg/front_end/lib/src/fasta/type_inference/type_constraint_gatherer.dart
@@ -57,7 +57,7 @@ abstract class TypeConstraintGatherer {
     }
   }
 
-  Member? getInterfaceMember(Class class_, Name name, {bool setter: false});
+  Member? getInterfaceMember(Class class_, Name name, {bool setter = false});
 
   InterfaceType? getTypeAsInstanceOf(InterfaceType type, Class superclass,
       Library clientLibrary, CoreTypes coreTypes);
@@ -1068,7 +1068,7 @@ class TypeSchemaConstraintGatherer extends TypeConstraintGatherer {
   }
 
   @override
-  Member? getInterfaceMember(Class class_, Name name, {bool setter: false}) {
+  Member? getInterfaceMember(Class class_, Name name, {bool setter = false}) {
     return environment.hierarchy
         .getInterfaceMember(class_, name, setter: setter);
   }
diff --git a/pkg/front_end/lib/src/fasta/type_inference/type_schema.dart b/pkg/front_end/lib/src/fasta/type_inference/type_schema.dart
index 54c2b25b3e0..50e39417e46 100644
--- a/pkg/front_end/lib/src/fasta/type_inference/type_schema.dart
+++ b/pkg/front_end/lib/src/fasta/type_inference/type_schema.dart
@@ -38,7 +38,7 @@ String typeSchemaToString(DartType schema) {
 class TypeSchemaPrinter extends Printer {
   TypeSchemaPrinter(StringSink sink,
       {NameSystem? syntheticNames,
-      bool showOffsets: false,
+      bool showOffsets = false,
       ImportTable? importTable,
       Annotator? annotator})
       : super(sink,
diff --git a/pkg/front_end/lib/src/fasta/type_inference/type_schema_environment.dart b/pkg/front_end/lib/src/fasta/type_inference/type_schema_environment.dart
index aeb70729360..982c7bbf7c4 100644
--- a/pkg/front_end/lib/src/fasta/type_inference/type_schema_environment.dart
+++ b/pkg/front_end/lib/src/fasta/type_inference/type_schema_environment.dart
@@ -138,7 +138,7 @@ class TypeSchemaEnvironment extends HierarchyBasedTypeEnvironment
 
   @override
   DartType getTypeOfSpecialCasedBinaryOperator(DartType type1, DartType type2,
-      {bool isNonNullableByDefault: false}) {
+      {bool isNonNullableByDefault = false}) {
     if (isNonNullableByDefault) {
       return super.getTypeOfSpecialCasedBinaryOperator(type1, type2,
           isNonNullableByDefault: isNonNullableByDefault);
@@ -161,7 +161,7 @@ class TypeSchemaEnvironment extends HierarchyBasedTypeEnvironment
 
   DartType getContextTypeOfSpecialCasedBinaryOperator(
       DartType contextType, DartType type1, DartType type2,
-      {bool isNonNullableByDefault: false}) {
+      {bool isNonNullableByDefault = false}) {
     if (isNonNullableByDefault) {
       if (contextType is! NeverType &&
           type1 is! NeverType &&
@@ -199,7 +199,7 @@ class TypeSchemaEnvironment extends HierarchyBasedTypeEnvironment
 
   DartType getContextTypeOfSpecialCasedTernaryOperator(
       DartType contextType, DartType receiverType, DartType operandType,
-      {bool isNonNullableByDefault: false}) {
+      {bool isNonNullableByDefault = false}) {
     if (isNonNullableByDefault) {
       if (receiverType is! NeverType &&
           isSubtypeOf(receiverType, coreTypes.numNonNullableRawType,
@@ -266,7 +266,7 @@ class TypeSchemaEnvironment extends HierarchyBasedTypeEnvironment
       List<TypeParameter> typeParametersToInfer,
       List<DartType>? previouslyInferredTypes,
       Library clientLibrary,
-      {bool partial: false}) {
+      {bool partial = false}) {
     List<DartType> inferredTypes =
         previouslyInferredTypes?.toList(growable: false) ??
             new List.filled(typeParametersToInfer.length, const UnknownType());
@@ -410,7 +410,7 @@ class TypeSchemaEnvironment extends HierarchyBasedTypeEnvironment
       List<TypeParameter> typeParametersToInfer,
       DartType? returnContextType,
       Library clientLibrary,
-      {bool isConst: false}) {
+      {bool isConst = false}) {
     assert(typeParametersToInfer.isNotEmpty);
 
     // Create a TypeConstraintGatherer that will allow certain type parameters
@@ -452,7 +452,7 @@ class TypeSchemaEnvironment extends HierarchyBasedTypeEnvironment
   /// lower bound for normally covariant type parameters.
   DartType solveTypeConstraint(
       TypeConstraint constraint, DartType topType, DartType bottomType,
-      {bool grounded: false, bool isContravariant: false}) {
+      {bool grounded = false, bool isContravariant = false}) {
     assert(bottomType == const NeverType.nonNullable() ||
         bottomType == const NullType());
     if (!isContravariant) {
@@ -538,8 +538,8 @@ class TypeSchemaEnvironment extends HierarchyBasedTypeEnvironment
       TypeConstraint constraint,
       DartType? extendsConstraint,
       Library clientLibrary,
-      {bool isContravariant: false,
-      bool isLegacyCovariant: true}) {
+      {bool isContravariant = false,
+      bool isLegacyCovariant = true}) {
     // See if we already fixed this type in a previous inference step.
     // If so, then we aren't allowed to change it unless [isLegacyCovariant] is
     // false.
@@ -569,7 +569,7 @@ class TypeSchemaEnvironment extends HierarchyBasedTypeEnvironment
       TypeConstraint constraint,
       DartType? extendsConstraint,
       Library clientLibrary,
-      {bool isLegacyCovariant: true}) {
+      {bool isLegacyCovariant = true}) {
     // See if we already fixed this type in a previous inference step.
     // If so, then we aren't allowed to change it unless [isLegacyCovariant] is
     // false.
diff --git a/pkg/front_end/lib/src/fasta/util/outline_extractor.dart b/pkg/front_end/lib/src/fasta/util/outline_extractor.dart
index 011171f2c77..74afcc689fa 100644
--- a/pkg/front_end/lib/src/fasta/util/outline_extractor.dart
+++ b/pkg/front_end/lib/src/fasta/util/outline_extractor.dart
@@ -72,7 +72,7 @@ Future<Map<Uri, String>> extractOutline(List<Uri> entryPointUris,
     required Uri? packages,
     Uri? platform,
     Target? target,
-    int verbosityLevel: 0}) {
+    int verbosityLevel = 0}) {
   CompilerOptions options = new CompilerOptions()
     ..target = target
     ..packagesFileUri = packages
@@ -86,7 +86,7 @@ Future<Map<Uri, String>> extractOutline(List<Uri> entryPointUris,
 
 Future<Map<Uri, String>> extractOutlineWithProcessedOptions(
     List<Uri> entryPointUris,
-    {int verbosityLevel: 0,
+    {int verbosityLevel = 0,
     required ProcessedOptions processedOptions}) {
   return CompilerContext.runWithOptions(processedOptions,
       (CompilerContext c) async {
diff --git a/pkg/front_end/lib/src/fasta/util/parser_ast.dart b/pkg/front_end/lib/src/fasta/util/parser_ast.dart
index 90a51d2f265..63b71e1b022 100644
--- a/pkg/front_end/lib/src/fasta/util/parser_ast.dart
+++ b/pkg/front_end/lib/src/fasta/util/parser_ast.dart
@@ -30,11 +30,11 @@ import '../source/diet_parser.dart';
 import 'parser_ast_helper.dart';
 
 CompilationUnitEnd getAST(List<int> rawBytes,
-    {bool includeBody: true,
-    bool includeComments: false,
-    bool enableExtensionMethods: false,
-    bool enableNonNullable: false,
-    bool enableTripleShift: false,
+    {bool includeBody = true,
+    bool includeComments = false,
+    bool enableExtensionMethods = false,
+    bool enableNonNullable = false,
+    bool enableTripleShift = false,
     List<Token>? languageVersionsSeen}) {
   Uint8List bytes = new Uint8List(rawBytes.length + 1);
   bytes.setRange(0, rawBytes.length, rawBytes);
diff --git a/pkg/front_end/lib/src/fasta/util/textual_outline.dart b/pkg/front_end/lib/src/fasta/util/textual_outline.dart
index 203dcd4c923..50d2d77b4c1 100644
--- a/pkg/front_end/lib/src/fasta/util/textual_outline.dart
+++ b/pkg/front_end/lib/src/fasta/util/textual_outline.dart
@@ -43,7 +43,7 @@ abstract class _Chunk implements Comparable<_Chunk> {
     sb.write(indent);
   }
 
-  void printOn(StringBuffer sb, {String indent: "", bool extraLine: true});
+  void printOn(StringBuffer sb, {String indent = "", bool extraLine = true});
 
   void printMetadata(StringBuffer sb, String indent) {
     if (metadata != null) {
@@ -74,8 +74,8 @@ abstract class _Chunk implements Comparable<_Chunk> {
   /// has an endGroup where the endGroup is [toToken] the Tokens between that
   /// and [toToken] is skipped, i.e. it jumps directly to [toToken].
   void printTokenRange(Token fromToken, Token toToken, StringBuffer sb,
-      {bool skipContentOnEndGroupUntilToToken: false,
-      bool includeToToken: true}) {
+      {bool skipContentOnEndGroupUntilToToken = false,
+      bool includeToToken = true}) {
     int endOfLast = fromToken.end;
     Token token = fromToken;
     Token afterEnd = toToken;
@@ -108,7 +108,7 @@ class _LanguageVersionChunk extends _Chunk {
   _LanguageVersionChunk(this.major, this.minor);
 
   @override
-  void printOn(StringBuffer sb, {String indent: "", bool extraLine: true}) {
+  void printOn(StringBuffer sb, {String indent = "", bool extraLine = true}) {
     _printNormalHeaderWithMetadata(sb, extraLine, indent);
     sb.write("// @dart = ${major}.${minor}");
   }
@@ -131,7 +131,7 @@ abstract class _TokenChunk extends _Chunk {
   }
 
   @override
-  void printOn(StringBuffer sb, {String indent: "", bool extraLine: true}) {
+  void printOn(StringBuffer sb, {String indent = "", bool extraLine = true}) {
     _printNormalHeaderWithMetadata(sb, extraLine, indent);
     _printOnWithoutHeaderAndMetadata(sb);
   }
@@ -180,7 +180,7 @@ class _ImportExportChunk extends _Chunk {
   }
 
   @override
-  void printOn(StringBuffer sb, {String indent: "", bool extraLine: true}) {
+  void printOn(StringBuffer sb, {String indent = "", bool extraLine = true}) {
     if (sb.isNotEmpty) {
       sb.write("\n");
     }
@@ -284,7 +284,7 @@ abstract class _ClassChunk extends _SortableChunk {
   _ClassChunk(Token startToken, Token endToken) : super(startToken, endToken);
 
   @override
-  void printOn(StringBuffer sb, {String indent: "", bool extraLine: true}) {
+  void printOn(StringBuffer sb, {String indent = "", bool extraLine = true}) {
     _printNormalHeaderWithMetadata(sb, extraLine, indent);
 
     // Header.
@@ -429,10 +429,10 @@ class BoxedInt {
 String? textualOutline(
   List<int> rawBytes,
   ScannerConfiguration configuration, {
-  bool throwOnUnexpected: false,
-  bool performModelling: false,
-  bool addMarkerForUnknownForTest: false,
-  bool returnNullOnError: true,
+  bool throwOnUnexpected = false,
+  bool performModelling = false,
+  bool addMarkerForUnknownForTest = false,
+  bool returnNullOnError = true,
 }) {
   Uint8List bytes = new Uint8List(rawBytes.length + 1);
   bytes.setRange(0, rawBytes.length, rawBytes);
diff --git a/pkg/front_end/lib/src/kernel_generator_impl.dart b/pkg/front_end/lib/src/kernel_generator_impl.dart
index b8eb49e46d5..17ce850016d 100644
--- a/pkg/front_end/lib/src/kernel_generator_impl.dart
+++ b/pkg/front_end/lib/src/kernel_generator_impl.dart
@@ -38,11 +38,11 @@ import 'fasta/uri_translator.dart' show UriTranslator;
 /// `package:front_end/src/api_prototype/kernel_generator.dart` and
 /// `package:front_end/src/api_prototype/summary_generator.dart` APIs.
 Future<CompilerResult> generateKernel(ProcessedOptions options,
-    {bool buildSummary: false,
-    bool buildComponent: true,
-    bool truncateSummary: false,
-    bool includeOffsets: true,
-    bool includeHierarchyAndCoreTypes: false}) async {
+    {bool buildSummary = false,
+    bool buildComponent = true,
+    bool truncateSummary = false,
+    bool includeOffsets = true,
+    bool includeHierarchyAndCoreTypes = false}) async {
   return await CompilerContext.runWithOptions(options, (_) async {
     return await generateKernelInternal(
         buildSummary: buildSummary,
@@ -54,12 +54,12 @@ Future<CompilerResult> generateKernel(ProcessedOptions options,
 }
 
 Future<CompilerResult> generateKernelInternal(
-    {bool buildSummary: false,
-    bool buildComponent: true,
-    bool truncateSummary: false,
-    bool includeOffsets: true,
-    bool retainDataForTesting: false,
-    bool includeHierarchyAndCoreTypes: false}) async {
+    {bool buildSummary = false,
+    bool buildComponent = true,
+    bool truncateSummary = false,
+    bool includeOffsets = true,
+    bool retainDataForTesting = false,
+    bool includeHierarchyAndCoreTypes = false}) async {
   ProcessedOptions options = CompilerContext.current.options;
   options.reportNullSafetyCompilationModeInfo();
   FileSystem fs = options.fileSystem;
diff --git a/pkg/front_end/lib/src/testing/compiler_common.dart b/pkg/front_end/lib/src/testing/compiler_common.dart
index 4f8a4815772..1a4e47d4723 100644
--- a/pkg/front_end/lib/src/testing/compiler_common.dart
+++ b/pkg/front_end/lib/src/testing/compiler_common.dart
@@ -31,11 +31,11 @@ import '../fasta/hybrid_file_system.dart' show HybridFileSystem;
 ///
 /// Wraps [kernelForProgram] with some default testing options (see [setup]).
 Future<CompilerResult?> compileScript(dynamic scriptOrSources,
-    {String fileName: 'main.dart',
-    List<String> additionalDills: const [],
+    {String fileName = 'main.dart',
+    List<String> additionalDills = const [],
     CompilerOptions? options,
-    bool retainDataForTesting: false,
-    bool requireMain: true}) async {
+    bool retainDataForTesting = false,
+    bool requireMain = true}) async {
   options ??= new CompilerOptions();
   Map<String, dynamic> sources;
   if (scriptOrSources is String) {
@@ -54,7 +54,7 @@ Future<CompilerResult?> compileScript(dynamic scriptOrSources,
 /// Wraps [kernelForModule] with some default testing options (see [setup]).
 Future<Component?> compileUnit(
     List<String> inputs, Map<String, dynamic> sources,
-    {List<String> additionalDills: const [], CompilerOptions? options}) async {
+    {List<String> additionalDills = const [], CompilerOptions? options}) async {
   options ??= new CompilerOptions();
   await setup(options, sources, additionalDills: additionalDills);
   return (await kernelForModule(inputs.map(toTestUri).toList(), options))
@@ -65,9 +65,9 @@ Future<Component?> compileUnit(
 ///
 /// Wraps [summaryFor] with some default testing options (see [setup]).
 Future<List<int>?> summarize(List<String> inputs, Map<String, dynamic> sources,
-    {List<String> additionalDills: const [],
+    {List<String> additionalDills = const [],
     CompilerOptions? options,
-    bool truncate: false}) async {
+    bool truncate = false}) async {
   options ??= new CompilerOptions();
   await setup(options, sources, additionalDills: additionalDills);
   return await summaryFor(inputs.map(toTestUri).toList(), options,
@@ -86,7 +86,7 @@ Future<List<int>?> summarize(List<String> inputs, Map<String, dynamic> sources,
 ///
 ///   * specify the location of the sdk summaries.
 Future<Null> setup(CompilerOptions options, Map<String, dynamic> sources,
-    {List<String> additionalDills: const []}) async {
+    {List<String> additionalDills = const []}) async {
   MemoryFileSystem fs = createMemoryFileSystem();
   sources.forEach((name, data) {
     MemoryFileSystemEntity entity = fs.entityForUri(toTestUri(name));
diff --git a/pkg/front_end/lib/src/testing/id_extractor.dart b/pkg/front_end/lib/src/testing/id_extractor.dart
index 0cfa685cb1c..98479d5adb0 100644
--- a/pkg/front_end/lib/src/testing/id_extractor.dart
+++ b/pkg/front_end/lib/src/testing/id_extractor.dart
@@ -99,7 +99,7 @@ abstract class DataExtractor<T> extends Visitor<void>
   }
 
   NodeId? computeDefaultNodeId(TreeNode node,
-      {bool skipNodeWithNoOffset: false}) {
+      {bool skipNodeWithNoOffset = false}) {
     if (skipNodeWithNoOffset && node.fileOffset == TreeNode.noOffset) {
       return null;
     }
diff --git a/pkg/front_end/lib/src/testing/id_testing_helper.dart b/pkg/front_end/lib/src/testing/id_testing_helper.dart
index 07501efd23b..00afda9ac8c 100644
--- a/pkg/front_end/lib/src/testing/id_testing_helper.dart
+++ b/pkg/front_end/lib/src/testing/id_testing_helper.dart
@@ -74,9 +74,9 @@ class TestConfig {
       this.allowedExperimentalFlags,
       this.librariesSpecificationUri,
       this.packageConfigUri,
-      this.compileSdk: false,
-      this.targetFlags: const TestTargetFlags(),
-      this.nnbdMode: NnbdMode.Weak});
+      this.compileSdk = false,
+      this.targetFlags = const TestTargetFlags(),
+      this.nnbdMode = NnbdMode.Weak});
 
   /// Called before running test on [testData].
   ///
@@ -220,7 +220,7 @@ class CfeCompiledData<T> extends CompiledData<T> {
 
   @override
   void reportError(Uri uri, int offset, String message,
-      {bool succinct: false}) {
+      {bool succinct = false}) {
     printMessageInLocation(
         compilerResult.component!.uriToSource, uri, offset, message,
         succinct: succinct);
@@ -300,8 +300,8 @@ Future<Map<String, TestResult<T>>> runTest<T>(
     required bool verbose,
     required bool succinct,
     required bool printCode,
-    bool forUserLibrariesOnly: true,
-    Iterable<Id> globalIds: const <Id>[],
+    bool forUserLibrariesOnly = true,
+    Iterable<Id> globalIds = const <Id>[],
     required void onFailure(String message),
     Map<String, List<String>>? skipMap,
     required Uri nullUri}) async {
@@ -338,8 +338,8 @@ Future<TestResult<T>> runTestForConfig<T>(MarkerOptions markerOptions,
     required bool verbose,
     required bool succinct,
     required bool printCode,
-    bool forUserLibrariesOnly: true,
-    Iterable<Id> globalIds: const <Id>[],
+    bool forUserLibrariesOnly = true,
+    Iterable<Id> globalIds = const <Id>[],
     required void onFailure(String message),
     required Uri nullUri}) async {
   MemberAnnotations<IdValue> memberAnnotations =
@@ -570,7 +570,7 @@ Future<TestResult<T>> runTestForConfig<T>(MarkerOptions markerOptions,
 
 void printMessageInLocation(
     Map<Uri, Source> uriToSource, Uri? uri, int offset, String message,
-    {bool succinct: false}) {
+    {bool succinct = false}) {
   if (uri == null) {
     print("(null uri)@$offset: $message");
   } else {
diff --git a/pkg/front_end/lib/src/testing/id_testing_utils.dart b/pkg/front_end/lib/src/testing/id_testing_utils.dart
index 7d5ddbf71f1..dd4b7f966c7 100644
--- a/pkg/front_end/lib/src/testing/id_testing_utils.dart
+++ b/pkg/front_end/lib/src/testing/id_testing_utils.dart
@@ -43,7 +43,7 @@ Member getEnclosingMember(TreeNode? node) {
 /// Finds the first [Library] in [component] with the given import [uri].
 ///
 /// If [required] is `true` an error is thrown if no library was found.
-Library? lookupLibrary(Component component, Uri uri, {bool required: true}) {
+Library? lookupLibrary(Component component, Uri uri, {bool required = true}) {
   for (Library library in component.libraries) {
     if (library.importUri == uri) {
       return library;
@@ -58,7 +58,7 @@ Library? lookupLibrary(Component component, Uri uri, {bool required: true}) {
 /// Finds the first [Class] in [library] with the given [className].
 ///
 /// If [required] is `true` an error is thrown if no class was found.
-Class? lookupClass(Library library, String className, {bool required: true}) {
+Class? lookupClass(Library library, String className, {bool required = true}) {
   for (Class cls in library.classes) {
     if (cls.name == className) {
       return cls;
@@ -74,7 +74,7 @@ Class? lookupClass(Library library, String className, {bool required: true}) {
 ///
 /// If [required] is `true` an error is thrown if no class was found.
 Extension? lookupExtension(Library library, String extensionName,
-    {bool required: true}) {
+    {bool required = true}) {
   for (Extension extension in library.extensions) {
     if (extension.name == extensionName) {
       return extension;
@@ -92,7 +92,7 @@ Extension? lookupExtension(Library library, String extensionName,
 ///
 /// If [required] is `true` an error is thrown if no member was found.
 Member? lookupLibraryMember(Library library, String memberName,
-    {bool required: true}) {
+    {bool required = true}) {
   for (Member member in library.members) {
     if (getMemberName(member) == memberName) {
       return member;
@@ -108,7 +108,8 @@ Member? lookupLibraryMember(Library library, String memberName,
 /// [memberName] as computed by [getMemberName].
 ///
 /// If [required] is `true` an error is thrown if no member was found.
-Member? lookupClassMember(Class cls, String memberName, {bool required: true}) {
+Member? lookupClassMember(Class cls, String memberName,
+    {bool required = true}) {
   for (Member member in cls.members) {
     if (getMemberName(member) == memberName) {
       return member;
@@ -122,7 +123,7 @@ Member? lookupClassMember(Class cls, String memberName, {bool required: true}) {
 
 LibraryBuilder? lookupLibraryBuilder(
     InternalCompilerResult compilerResult, Library library,
-    {bool required: true}) {
+    {bool required = true}) {
   SourceLoader loader = compilerResult.kernelTargetForTesting!.loader;
   LibraryBuilder? builder = loader.lookupLibraryBuilder(library.importUri);
   if (builder == null && required) {
@@ -133,7 +134,7 @@ LibraryBuilder? lookupLibraryBuilder(
 
 TypeParameterScopeBuilder lookupLibraryDeclarationBuilder(
     InternalCompilerResult compilerResult, Library library,
-    {bool required: true}) {
+    {bool required = true}) {
   SourceLibraryBuilder builder =
       lookupLibraryBuilder(compilerResult, library, required: required)
           as SourceLibraryBuilder;
@@ -142,7 +143,7 @@ TypeParameterScopeBuilder lookupLibraryDeclarationBuilder(
 
 ClassBuilder? lookupClassBuilder(
     InternalCompilerResult compilerResult, Class cls,
-    {bool required: true}) {
+    {bool required = true}) {
   TypeParameterScopeBuilder libraryBuilder = lookupLibraryDeclarationBuilder(
       compilerResult, cls.enclosingLibrary,
       required: required);
@@ -155,7 +156,7 @@ ClassBuilder? lookupClassBuilder(
 
 ExtensionBuilder? lookupExtensionBuilder(
     InternalCompilerResult compilerResult, Extension extension,
-    {bool required: true}) {
+    {bool required = true}) {
   TypeParameterScopeBuilder libraryBuilder = lookupLibraryDeclarationBuilder(
       compilerResult, extension.enclosingLibrary,
       required: required);
@@ -171,7 +172,7 @@ ExtensionBuilder? lookupExtensionBuilder(
 /// [cls] using [memberName] as its name.
 MemberBuilder? lookupClassMemberBuilder(InternalCompilerResult compilerResult,
     Class cls, Member member, String memberName,
-    {bool required: true}) {
+    {bool required = true}) {
   ClassBuilder? classBuilder =
       lookupClassBuilder(compilerResult, cls, required: required);
   MemberBuilder? memberBuilder;
@@ -191,7 +192,7 @@ MemberBuilder? lookupClassMemberBuilder(InternalCompilerResult compilerResult,
 
 MemberBuilder? lookupMemberBuilder(
     InternalCompilerResult compilerResult, Member member,
-    {bool required: true}) {
+    {bool required = true}) {
   MemberBuilder? memberBuilder;
   if (member.isExtensionMember) {
     String memberName = member.name.text;
@@ -238,8 +239,8 @@ MemberBuilder? lookupExtensionMemberBuilder(
     Extension extension,
     Member member,
     String memberName,
-    {bool isSetter: false,
-    bool required: true}) {
+    {bool isSetter = false,
+    bool required = true}) {
   ExtensionBuilder? extensionBuilder =
       lookupExtensionBuilder(compilerResult, extension, required: required);
   MemberBuilder? memberBuilder;
@@ -256,7 +257,7 @@ MemberBuilder? lookupExtensionMemberBuilder(
 /// Returns a textual representation of the constant [node] to be used in
 /// testing.
 String constantToText(Constant node,
-    {TypeRepresentation typeRepresentation: TypeRepresentation.legacy}) {
+    {TypeRepresentation typeRepresentation = TypeRepresentation.legacy}) {
   StringBuffer sb = new StringBuffer();
   new ConstantToTextVisitor(sb, typeRepresentation).visit(node);
   return sb.toString();
@@ -733,7 +734,7 @@ String typeVariableBuilderToText(TypeVariableBuilder typeVariable) {
 }
 
 /// Returns a textual representation of [errors] to be used in testing.
-String errorsToText(List<FormattedMessage> errors, {bool useCodes: false}) {
+String errorsToText(List<FormattedMessage> errors, {bool useCodes = false}) {
   if (useCodes) {
     return errors.map((m) => m.code).join(',');
   } else {
diff --git a/pkg/front_end/test/comments_on_certain_arguments_tool.dart b/pkg/front_end/test/comments_on_certain_arguments_tool.dart
index b8fd17e9404..675567fbe14 100644
--- a/pkg/front_end/test/comments_on_certain_arguments_tool.dart
+++ b/pkg/front_end/test/comments_on_certain_arguments_tool.dart
@@ -381,7 +381,7 @@ class TestSourceLoader extends SourceLoader {
 
   @override
   Future<Token> tokenize(SourceLibraryBuilder library,
-      {bool suppressLexicalErrors: false}) async {
+      {bool suppressLexicalErrors = false}) async {
     Token result = await super
         .tokenize(library, suppressLexicalErrors: suppressLexicalErrors);
     cache[library.fileUri] = result;
diff --git a/pkg/front_end/test/compile_benchmark.dart b/pkg/front_end/test/compile_benchmark.dart
index e6cea76e322..0415ae01d25 100644
--- a/pkg/front_end/test/compile_benchmark.dart
+++ b/pkg/front_end/test/compile_benchmark.dart
@@ -88,9 +88,9 @@ void main(List<String> args) {
 ///   counting annotation is likely at least as useful).
 ///
 void doWork(Directory tmp, List<int> dillData, List<String> arguments,
-    {bool tryToAnnotate: false,
-    bool tryToSlowDown: false,
-    bool timeInsteadOfCount: false}) {
+    {bool tryToAnnotate = false,
+    bool tryToSlowDown = false,
+    bool timeInsteadOfCount = false}) {
   File f = new File.fromUri(tmp.uri.resolve("a.dill"));
   f.writeAsBytesSync(dillData);
   Uri dillOrgInTmp = f.uri;
diff --git a/pkg/front_end/test/crashing_test_case_minimizer_impl.dart b/pkg/front_end/test/crashing_test_case_minimizer_impl.dart
index 3e6e11d3152..ae5206bd14a 100644
--- a/pkg/front_end/test/crashing_test_case_minimizer_impl.dart
+++ b/pkg/front_end/test/crashing_test_case_minimizer_impl.dart
@@ -685,7 +685,7 @@ class TestMinimizer {
 
   Uint8List _rewriteImportsExportsToUri(
       Uint8List oldData, Uri newUri, Uri oldUri, bool nnbd,
-      {bool convertExportToImport: false}) {
+      {bool convertExportToImport = false}) {
     CompilationUnitEnd ast = getAST(oldData,
         includeBody: false,
         includeComments: false,
@@ -799,7 +799,7 @@ worlds:
     }
   }
 
-  Uri _getUri(Token uriToken, Uri uri, {bool resolvePackage: true}) {
+  Uri _getUri(Token uriToken, Uri uri, {bool resolvePackage = true}) {
     String uriString = uriToken.lexeme;
     uriString = uriString.substring(1, uriString.length - 1);
     Uri uriTokenUri = uri.resolve(uriString);
@@ -906,7 +906,7 @@ worlds:
   }
 
   Future<void> _tryToRemoveUnreferencedFileContent(Component initialComponent,
-      {bool deleteFile: false}) async {
+      {bool deleteFile = false}) async {
     // Check if there now are any unused files.
     if (_latestComponent == null) return;
     Set<Uri> neededUris = _latestComponent!.uriToSource.keys.toSet();
@@ -941,7 +941,7 @@ worlds:
 
   Future<void> _deleteContent(
       List<Uri> uris, int uriIndex, bool limitTo1, Component initialComponent,
-      {bool deleteFile: false}) async {
+      {bool deleteFile = false}) async {
     String extraMessageText = "all content of ";
     if (deleteFile) extraMessageText = "";
 
@@ -1773,7 +1773,7 @@ worlds:
         enableTripleShift: false);
   }
 
-  bool _isUriNnbd(Uri uri, {bool crashOnFail: true}) {
+  bool _isUriNnbd(Uri uri, {bool crashOnFail = true}) {
     Uri asImportUri = _getImportUri(uri);
     LibraryBuilder? libraryBuilder = _latestCrashingIncrementalCompiler!
         .kernelTargetForTesting!.loader
diff --git a/pkg/front_end/test/fasta/assert_locations_test.dart b/pkg/front_end/test/fasta/assert_locations_test.dart
index 4f4787e7762..3b9f87ebf7b 100644
--- a/pkg/front_end/test/fasta/assert_locations_test.dart
+++ b/pkg/front_end/test/fasta/assert_locations_test.dart
@@ -45,7 +45,7 @@ Test generateTest() {
   // parenthesis of the assert statement to the first character of the
   // condition.
   void makeAssertWithMessage(String condition,
-      {String? message, bool trailingComma: false, int additionalOffset: 0}) {
+      {String? message, bool trailingComma = false, int additionalOffset = 0}) {
     final name = 'testCase${spans.length}';
     sb.writeln('void $name(x) {');
     sb.write('assert(');
@@ -65,7 +65,7 @@ Test generateTest() {
 
   // Create test cases for various variants of the assert statement with
   // the given condition.
-  void makeAssert(String condition, {int additionalOffset: 0}) {
+  void makeAssert(String condition, {int additionalOffset = 0}) {
     makeAssertWithMessage(condition, additionalOffset: additionalOffset);
     makeAssertWithMessage(condition,
         trailingComma: true, additionalOffset: additionalOffset);
diff --git a/pkg/front_end/test/fasta/bootstrap_test.dart b/pkg/front_end/test/fasta/bootstrap_test.dart
index 93c9faf8fd0..6a4e59be36b 100644
--- a/pkg/front_end/test/fasta/bootstrap_test.dart
+++ b/pkg/front_end/test/fasta/bootstrap_test.dart
@@ -67,7 +67,7 @@ Future runCompiler(Uri compiler, Uri input, Uri output) async {
   }
 }
 
-Future compare(Uri a, Uri b, {bool silent: false}) async {
+Future compare(Uri a, Uri b, {bool silent = false}) async {
   List<int> bytesA = await new File.fromUri(a).readAsBytes();
   List<int> bytesB = await new File.fromUri(b).readAsBytes();
   if (bytesA.length == bytesB.length) {
diff --git a/pkg/front_end/test/fasta/expression_suite.dart b/pkg/front_end/test/fasta/expression_suite.dart
index 2e0a4a98b8f..10547d536d2 100644
--- a/pkg/front_end/test/fasta/expression_suite.dart
+++ b/pkg/front_end/test/fasta/expression_suite.dart
@@ -209,7 +209,7 @@ class MatchProcedureExpectations extends Step<List<TestCase>, Null, Context> {
   final bool updateExpectations;
 
   const MatchProcedureExpectations(this.suffix,
-      {this.updateExpectations: false});
+      {this.updateExpectations = false});
 
   @override
   String get name => "match expectations";
diff --git a/pkg/front_end/test/fasta/incremental_expectations.dart b/pkg/front_end/test/fasta/incremental_expectations.dart
index 1bf173d65bb..d433efa31e3 100644
--- a/pkg/front_end/test/fasta/incremental_expectations.dart
+++ b/pkg/front_end/test/fasta/incremental_expectations.dart
@@ -24,7 +24,7 @@ class IncrementalExpectation {
   final bool hasCompileTimeError;
 
   const IncrementalExpectation(this.messages,
-      {this.commitChangesShouldFail: false, this.hasCompileTimeError: false});
+      {this.commitChangesShouldFail = false, this.hasCompileTimeError = false});
 
   factory IncrementalExpectation.fromJson(String json) {
     var data = const JsonDecoder().convert(json);
diff --git a/pkg/front_end/test/fasta/parser/type_info_test.dart b/pkg/front_end/test/fasta/parser/type_info_test.dart
index b73a89dc558..b3e9ae2e0dc 100644
--- a/pkg/front_end/test/fasta/parser/type_info_test.dart
+++ b/pkg/front_end/test/fasta/parser/type_info_test.dart
@@ -31,7 +31,7 @@ void main() {
   });
 }
 
-ScannerResult scanString(String source, {bool includeComments: false}) =>
+ScannerResult scanString(String source, {bool includeComments = false}) =>
     scanner.scanString(source,
         configuration: const ScannerConfiguration(enableTripleShift: true),
         includeComments: includeComments);
@@ -2817,7 +2817,7 @@ class TypeInfoListener implements Listener {
   List<ExpectedError>? errors;
   Token? firstToken;
 
-  TypeInfoListener({this.firstToken, this.metadataAllowed: false}) {
+  TypeInfoListener({this.firstToken, this.metadataAllowed = false}) {
     if (firstToken != null && firstToken!.isEof) {
       firstToken = firstToken!.next;
     }
diff --git a/pkg/front_end/test/fasta/testing/suite.dart b/pkg/front_end/test/fasta/testing/suite.dart
index 780c56f6031..0988fc1c723 100644
--- a/pkg/front_end/test/fasta/testing/suite.dart
+++ b/pkg/front_end/test/fasta/testing/suite.dart
@@ -265,10 +265,10 @@ class FolderOptions {
       this.forceStaticFieldLowering,
       this.forceNoExplicitGetterCalls,
       this.forceConstructorTearOffLowering,
-      this.nnbdAgnosticMode: false,
-      this.defines: const {},
-      this.noVerify: false,
-      this.target: "vm",
+      this.nnbdAgnosticMode = false,
+      this.defines = const {},
+      this.noVerify = false,
+      this.target = "vm",
       // can be null
       this.overwriteCurrentSdkVersion})
       // ignore: unnecessary_null_comparison
@@ -2199,7 +2199,7 @@ Target createTarget(FolderOptions folderOptions, FastaContext context) {
 
 Set<Uri> createUserLibrariesImportUriSet(
     Component component, UriTranslator uriTranslator,
-    {Set<Library> excludedLibraries: const {}}) {
+    {Set<Library> excludedLibraries = const {}}) {
   Set<Uri> knownUris =
       component.libraries.map((Library library) => library.importUri).toSet();
   Set<Uri> userLibraries = component.libraries
@@ -2246,7 +2246,7 @@ CompileMode compileModeFromName(String? name) {
 class Outline extends Step<TestDescription, ComponentResult, FastaContext> {
   final CompileMode compileMode;
 
-  const Outline(this.compileMode, {this.updateComments: false});
+  const Outline(this.compileMode, {this.updateComments = false});
 
   final bool updateComments;
 
diff --git a/pkg/front_end/test/fasta/type_inference/type_schema_environment_nnbd_test.dart b/pkg/front_end/test/fasta/type_inference/type_schema_environment_nnbd_test.dart
index dadd9ee8624..2e16cbbe1a1 100644
--- a/pkg/front_end/test/fasta/type_inference/type_schema_environment_nnbd_test.dart
+++ b/pkg/front_end/test/fasta/type_inference/type_schema_environment_nnbd_test.dart
@@ -1466,8 +1466,8 @@ class TypeSchemaEnvironmentTest extends TypeSchemaEnvironmentTestBase {
       required String type2,
       required String upperBound,
       String? typeParameters,
-      bool nonNull1: false,
-      bool nonNull2: false}) {
+      bool nonNull1 = false,
+      bool nonNull2 = false}) {
     typeParserEnvironment.withTypeParameters(typeParameters,
         (List<TypeParameter> typeParameterNodes) {
       DartType dartType1 = parseType(type1);
diff --git a/pkg/front_end/test/incremental_flutter_tester.dart b/pkg/front_end/test/incremental_flutter_tester.dart
index 7527279c164..cb2db5af0fb 100644
--- a/pkg/front_end/test/incremental_flutter_tester.dart
+++ b/pkg/front_end/test/incremental_flutter_tester.dart
@@ -245,7 +245,7 @@ bool isEqual(List<int> a, List<int> b) {
   return false;
 }
 
-String toText(List<int> data, {bool skipInterfaceTarget: false}) {
+String toText(List<int> data, {bool skipInterfaceTarget = false}) {
   Component component = new Component();
   new BinaryBuilder(data).readComponent(component);
   StringBuffer buffer = new StringBuffer();
@@ -291,8 +291,8 @@ CompilerOptions getOptions(Uri sdkRoot) {
 class PrinterPrime extends Printer {
   PrinterPrime(StringSink sink,
       {NameSystem? syntheticNames,
-      bool showOffsets: false,
-      bool showMetadata: false,
+      bool showOffsets = false,
+      bool showMetadata = false,
       ImportTable? importTable,
       Annotator? annotator,
       Map<String, MetadataRepository<dynamic>>? metadata})
diff --git a/pkg/front_end/test/incremental_suite.dart b/pkg/front_end/test/incremental_suite.dart
index e45d9de3c00..4ddfafa9e64 100644
--- a/pkg/front_end/test/incremental_suite.dart
+++ b/pkg/front_end/test/incremental_suite.dart
@@ -1868,7 +1868,7 @@ Result<TestData>? checkExpectFile(TestData data, int worldNum,
 /// while we're trying to figure out if it's useful or not.
 Result<TestData>? checkClassHierarchy(IncrementalCompilerResult compilerResult,
     TestData data, int worldNum, Context context,
-    {bool checkExpectFile: false}) {
+    {bool checkExpectFile = false}) {
   ClassHierarchy? classHierarchy = compilerResult.classHierarchy;
   if (classHierarchy is! ClosedWorldClassHierarchy) {
     return new Result<TestData>(
@@ -2605,7 +2605,7 @@ class TestIncrementalCompiler extends IncrementalCompiler {
   Future<IncrementalCompilerResult> computeDelta(
       {List<Uri>? entryPoints,
       bool fullComponent = false,
-      bool trackNeededDillLibraries: false,
+      bool trackNeededDillLibraries = false,
       bool? simulateTransformer}) async {
     IncrementalCompilerResult result = await super.computeDelta(
         entryPoints: entryPoints,
diff --git a/pkg/front_end/test/parser_suite.dart b/pkg/front_end/test/parser_suite.dart
index c73cb531143..17c8554abea 100644
--- a/pkg/front_end/test/parser_suite.dart
+++ b/pkg/front_end/test/parser_suite.dart
@@ -200,7 +200,7 @@ class ListenerStep extends Step<TestDescription, TestDescription, Context> {
   /// Returns null if scanner doesn't return any Token.
   static ParserTestListenerWithMessageFormatting? doListenerParsing(
       Uri uri, String suiteName, String shortName,
-      {bool addTrace: false, bool annotateLines: false}) {
+      {bool addTrace = false, bool annotateLines = false}) {
     List<int> lineStarts = <int>[];
     Token firstToken = scanUri(uri, shortName, lineStarts: lineStarts);
 
@@ -362,7 +362,7 @@ class TokenStep extends Step<TestDescription, TestDescription, Context> {
 }
 
 StringBuffer tokenStreamToString(Token firstToken, List<int> lineStarts,
-    {bool addTypes: false}) {
+    {bool addTypes = false}) {
   StringBuffer sb = new StringBuffer();
   Token? token = firstToken;
 
diff --git a/pkg/front_end/test/patching/data/const_constructors/patch.dart b/pkg/front_end/test/patching/data/const_constructors/patch.dart
index 1b92dab46cb..6aae5be3cf9 100644
--- a/pkg/front_end/test/patching/data/const_constructors/patch.dart
+++ b/pkg/front_end/test/patching/data/const_constructors/patch.dart
@@ -16,5 +16,5 @@ class PatchedClass {
    patch
   */
   @patch
-  const PatchedClass({int field: 0}) : _field = field;
+  const PatchedClass({int field = 0}) : _field = field;
 }
diff --git a/pkg/front_end/test/precedence_info_test.dart b/pkg/front_end/test/precedence_info_test.dart
index 0508cc8c717..e4240598aa5 100644
--- a/pkg/front_end/test/precedence_info_test.dart
+++ b/pkg/front_end/test/precedence_info_test.dart
@@ -288,7 +288,7 @@ class PrecedenceInfoTest {
   }
 
   void test_name() {
-    void assertName(String? source, String name, {int offset: 0}) {
+    void assertName(String? source, String name, {int offset = 0}) {
       if (source == null || source.isEmpty) return;
       var token = scanString(source, includeComments: true).tokens;
       while (token is ErrorToken || token.offset < offset) {
diff --git a/pkg/front_end/test/scanner_fasta_test.dart b/pkg/front_end/test/scanner_fasta_test.dart
index 27c127621fd..45a858303dc 100644
--- a/pkg/front_end/test/scanner_fasta_test.dart
+++ b/pkg/front_end/test/scanner_fasta_test.dart
@@ -312,7 +312,7 @@ abstract class ScannerTest_Fasta_Base {
   Token scan(String source);
 
   void expectToken(Token token, TokenType type, int offset, int length,
-      {bool isSynthetic: false, String? lexeme}) {
+      {bool isSynthetic = false, String? lexeme}) {
     String description = '${token.type} $token';
     expect(token.type, type, reason: description);
     expect(token.offset, offset, reason: description);
@@ -681,7 +681,7 @@ abstract class ScannerTest_Fasta_Base {
 @reflectiveTest
 class ScannerTest_Fasta_Direct_UTF8 extends ScannerTest_Fasta_Direct {
   @override
-  ScannerResult scanSource(source, {includeComments: true}) {
+  ScannerResult scanSource(source, {includeComments = true}) {
     List<int> encoded = utf8.encode(source).toList(growable: true);
     encoded.add(0); // Ensure 0 terminated bytes for UTF8 scanner
     return usedForFuzzTesting.scan(encoded,
@@ -700,7 +700,7 @@ class ScannerTest_Fasta_Direct extends ScannerTest_Fasta_Base {
     this.languageVersion = languageVersion;
   }
 
-  ScannerResult scanSource(source, {includeComments: true}) =>
+  ScannerResult scanSource(source, {includeComments = true}) =>
       scanString(source,
           includeComments: includeComments,
           languageVersionChanged: languageVersionChanged);
diff --git a/pkg/front_end/test/scanner_replacement_test.dart b/pkg/front_end/test/scanner_replacement_test.dart
index f936db93310..b8ae65d63f9 100644
--- a/pkg/front_end/test/scanner_replacement_test.dart
+++ b/pkg/front_end/test/scanner_replacement_test.dart
@@ -217,7 +217,7 @@ class ScannerTest_Replacement extends ScannerTestBase {
 
   /// Assert that the tokens in the stream are correctly connected prev/next.
   void assertValidTokenStream(fasta.Token firstToken,
-      {bool errorsFirst: false}) {
+      {bool errorsFirst = false}) {
     fasta.Token token = firstToken;
     fasta.Token previous = token.previous!;
     expect(previous.isEof, isTrue, reason: 'Missing leading EOF');
diff --git a/pkg/front_end/test/scanner_test.dart b/pkg/front_end/test/scanner_test.dart
index 08c21e795a2..6d67201db95 100644
--- a/pkg/front_end/test/scanner_test.dart
+++ b/pkg/front_end/test/scanner_test.dart
@@ -1510,7 +1510,7 @@ abstract class ScannerTestBase {
   }
 
   Token _scan(String source,
-      {ScannerConfiguration? configuration, bool ignoreErrors: false}) {
+      {ScannerConfiguration? configuration, bool ignoreErrors = false}) {
     ErrorListener listener = new ErrorListener();
     Token token =
         scanWithListener(source, listener, configuration: configuration);
diff --git a/pkg/front_end/test/spell_checking_utils.dart b/pkg/front_end/test/spell_checking_utils.dart
index 072a3f2af49..ecf62e81099 100644
--- a/pkg/front_end/test/spell_checking_utils.dart
+++ b/pkg/front_end/test/spell_checking_utils.dart
@@ -20,7 +20,7 @@ enum Dictionaries {
 Map<Dictionaries, Set<String>>? loadedDictionaries;
 
 SpellingResult spellcheckString(String s,
-    {List<Dictionaries>? dictionaries, bool splitAsCode: false}) {
+    {List<Dictionaries>? dictionaries, bool splitAsCode = false}) {
   dictionaries ??= const [Dictionaries.common];
   ensureDictionariesLoaded(dictionaries);
 
@@ -182,7 +182,7 @@ Uri dictionaryToUri(Dictionaries dictionaryType) {
 }
 
 List<String> splitStringIntoWords(String s, List<int> splitOffsets,
-    {bool splitAsCode: false}) {
+    {bool splitAsCode = false}) {
   List<String> result = <String>[];
   // Match whitespace and the characters "-", "=", "|", "/", ",".
   String regExpStringInner = r"\s-=\|\/,";
diff --git a/pkg/front_end/test/text_representation/data/statements.dart b/pkg/front_end/test/text_representation/data/statements.dart
index 7bf9169e4c3..fb2ac39c62c 100644
--- a/pkg/front_end/test/text_representation/data/statements.dart
+++ b/pkg/front_end/test/text_representation/data/statements.dart
@@ -601,7 +601,7 @@ dart.core::int localFunction(dynamic a, {dynamic b = 0, required dynamic c}) {
 /*limited.member: stmtFunctionDeclarationNamed:
 int localFunction(dynamic a, {dynamic b = 0, required dynamic c}) { return 0; }*/
 stmtFunctionDeclarationNamed() {
-  int localFunction(a, {b: 0, required c}) {
+  int localFunction(a, {b = 0, required c}) {
     return 0;
   }
 }
diff --git a/pkg/front_end/test/unit_test_suites.dart b/pkg/front_end/test/unit_test_suites.dart
index f8eba4b09e7..5da99f361ad 100644
--- a/pkg/front_end/test/unit_test_suites.dart
+++ b/pkg/front_end/test/unit_test_suites.dart
@@ -347,7 +347,7 @@ class Suite {
     this.testingRootPath, {
     required this.shardCount,
     this.path,
-    this.requiresGit: false,
+    this.requiresGit = false,
   });
 }
 
diff --git a/pkg/front_end/test/utils/kernel_chain.dart b/pkg/front_end/test/utils/kernel_chain.dart
index eb3401fa035..c84a94c94e6 100644
--- a/pkg/front_end/test/utils/kernel_chain.dart
+++ b/pkg/front_end/test/utils/kernel_chain.dart
@@ -209,7 +209,7 @@ class MatchExpectation
   /// be serialized, deserialized, and the textual representation of that is
   /// compared. It is still the original component that is returned though.
   const MatchExpectation(this.suffix,
-      {this.serializeFirst: false, required this.isLastMatchStep})
+      {this.serializeFirst = false, required this.isLastMatchStep})
       // ignore: unnecessary_null_comparison
       : assert(isLastMatchStep != null);
 
diff --git a/pkg/front_end/test/utils/values.dart b/pkg/front_end/test/utils/values.dart
index 3dfad279243..c21ab7bd481 100644
--- a/pkg/front_end/test/utils/values.dart
+++ b/pkg/front_end/test/utils/values.dart
@@ -71,7 +71,7 @@ class ListValue<E> extends Value<List<E>> {
   final Value<E> elementReader;
   final bool supportSingleton;
 
-  const ListValue(this.elementReader, {this.supportSingleton: false});
+  const ListValue(this.elementReader, {this.supportSingleton = false});
 
   @override
   List<E> read(dynamic value, {String context = ''}) {
diff --git a/pkg/front_end/test/vm_service_coverage.dart b/pkg/front_end/test/vm_service_coverage.dart
index cb6736c9ddc..b62ee077133 100644
--- a/pkg/front_end/test/vm_service_coverage.dart
+++ b/pkg/front_end/test/vm_service_coverage.dart
@@ -24,7 +24,7 @@ class CoverageHelper extends vmService.LaunchingVMServiceHelper {
   final bool forceCompilation;
   final bool printHits;
 
-  CoverageHelper({this.forceCompilation: false, this.printHits: true});
+  CoverageHelper({this.forceCompilation = false, this.printHits = true});
 
   @override
   Future<void> run() async {
diff --git a/pkg/front_end/test/vm_service_heap_helper.dart b/pkg/front_end/test/vm_service_heap_helper.dart
index 1511a51d2e5..7fd130a86a0 100644
--- a/pkg/front_end/test/vm_service_heap_helper.dart
+++ b/pkg/front_end/test/vm_service_heap_helper.dart
@@ -14,9 +14,9 @@ class VMServiceHeapHelperSpecificExactLeakFinder
   final bool throwOnPossibleLeak;
 
   VMServiceHeapHelperSpecificExactLeakFinder({
-    List<Interest> interests: const [],
-    List<Interest> prettyPrints: const [],
-    this.throwOnPossibleLeak: false,
+    List<Interest> interests = const [],
+    List<Interest> prettyPrints = const [],
+    this.throwOnPossibleLeak = false,
   }) {
     if (interests.isEmpty) throw "Empty list of interests given";
     for (Interest interest in interests) {
diff --git a/pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart b/pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart
index 1750b681fcb..4ef0da3c57f 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart
@@ -62,7 +62,7 @@ expect(expected, actual) {
   if (expected != actual) throw 'Expected $expected, actual $actual';
 }
 
-throws(Function() f, {bool inSoundModeOnly: false}) {
+throws(Function() f, {bool inSoundModeOnly = false}) {
   try {
     f();
   } catch (e) {
diff --git a/pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart.textual_outline.expect
index f48ab148007..6c90015c12c 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart.textual_outline.expect
@@ -19,4 +19,4 @@ var Class1_new = Class1.new;
 var Class2_new = Class2.new;
 testInferred() {}
 expect(expected, actual) {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart.textual_outline_modelled.expect
index 99d1f464644..df06aa67b00 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart.textual_outline_modelled.expect
@@ -16,6 +16,6 @@ expect(expected, actual) {}
 final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
 testInferred() {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
 var Class1_new = Class1.new;
 var Class2_new = Class2.new;
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart
index 37a72c733fd..245974ed653 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart
@@ -91,7 +91,6 @@ testArgs() {
   dynamic f4b = Class4.new;
   throws(() => f4b(42, 87));
 
-
   var f5a = Class5.new;
   var c5a = f5a(42);
   expect(42, c5a.field1);
@@ -140,7 +139,7 @@ expect(expected, actual) {
   if (expected != actual) throw 'Expected $expected, actual $actual';
 }
 
-throws(Function() f, {bool inSoundModeOnly: false}) {
+throws(Function() f, {bool inSoundModeOnly = false}) {
   try {
     f();
   } catch (e) {
@@ -151,4 +150,4 @@ throws(Function() f, {bool inSoundModeOnly: false}) {
     return;
   }
   throw 'Expected exception';
-}
\ No newline at end of file
+}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.strong.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.strong.expect
index 678c59b65aa..01708b2aa34 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.strong.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.strong.expect
@@ -16,29 +16,29 @@ library /*isNonNullableByDefault*/;
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:102:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:115:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -155,10 +155,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:102:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -172,17 +172,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:115:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.strong.transformed.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.strong.transformed.expect
index 0637a6f8e1d..21dd686a34a 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.strong.transformed.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.strong.transformed.expect
@@ -16,29 +16,29 @@ library /*isNonNullableByDefault*/;
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:102:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:115:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -155,10 +155,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:102:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -172,17 +172,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:115:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.textual_outline.expect
index 88f046b7b17..8b7a833aaba 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.textual_outline.expect
@@ -34,4 +34,4 @@ class Class6 {
 
 testArgs() {}
 expect(expected, actual) {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.textual_outline_modelled.expect
index d8d816c553c..3b2c22c96cf 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.textual_outline_modelled.expect
@@ -32,4 +32,4 @@ final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
 testArgs() {}
 testNoArgs() {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.weak.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.weak.expect
index 678c59b65aa..01708b2aa34 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.weak.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.weak.expect
@@ -16,29 +16,29 @@ library /*isNonNullableByDefault*/;
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:102:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:115:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -155,10 +155,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:102:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -172,17 +172,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:115:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.weak.modular.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.weak.modular.expect
index 678c59b65aa..01708b2aa34 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.weak.modular.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.weak.modular.expect
@@ -16,29 +16,29 @@ library /*isNonNullableByDefault*/;
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:102:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:115:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -155,10 +155,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:102:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -172,17 +172,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:115:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.weak.transformed.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.weak.transformed.expect
index 0637a6f8e1d..21dd686a34a 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.weak.transformed.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.weak.transformed.expect
@@ -16,29 +16,29 @@ library /*isNonNullableByDefault*/;
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:102:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:115:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -155,10 +155,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:102:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -172,17 +172,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:115:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart
index dda860c4761..71653da47f4 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart
@@ -18,7 +18,7 @@ class Class1 {
 class Class2 {
   final int field;
 
-  Class2({this.field: 42});
+  Class2({this.field = 42});
 }
 
 void testDefaultValues() {
@@ -59,7 +59,7 @@ expect(expected, actual) {
   if (expected != actual) throw 'Expected $expected, actual $actual';
 }
 
-throws(Function() f, {bool inSoundModeOnly: false}) {
+throws(Function() f, {bool inSoundModeOnly = false}) {
   try {
     f();
   } catch (e) {
@@ -70,4 +70,4 @@ throws(Function() f, {bool inSoundModeOnly: false}) {
     return;
   }
   throw 'Expected exception';
-}
\ No newline at end of file
+}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart.textual_outline.expect
index 8aff8da375b..a659bc83ff6 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart.textual_outline.expect
@@ -8,9 +8,9 @@ class Class1 {
 
 class Class2 {
   final int field;
-  Class2({this.field: 42});
+  Class2({this.field = 42});
 }
 
 void testDefaultValues() {}
 expect(expected, actual) {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart.textual_outline_modelled.expect
index ecb692c3e16..c133e641854 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart.textual_outline_modelled.expect
@@ -4,12 +4,12 @@ class Class1 {
 }
 
 class Class2 {
-  Class2({this.field: 42});
+  Class2({this.field = 42});
   final int field;
 }
 
 expect(expected, actual) {}
 final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
 void testDefaultValues() {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart
index 9c6ef02e33d..44bdba973a2 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart
@@ -100,7 +100,6 @@ testArgs() {
   dynamic f4b = Class4.new;
   throws(() => f4b(42, 87));
 
-
   var f5a = Class5.new;
   var c5a = f5a(42);
   expect(42, c5a.field1);
@@ -149,7 +148,7 @@ expect(expected, actual) {
   if (expected != actual) throw 'Expected $expected, actual $actual';
 }
 
-throws(Function() f, {bool inSoundModeOnly: false}) {
+throws(Function() f, {bool inSoundModeOnly = false}) {
   try {
     f();
   } catch (e) {
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.strong.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.strong.expect
index 68c70e19474..9eec1ab9420 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.strong.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.strong.expect
@@ -16,29 +16,29 @@ library /*isNonNullableByDefault*/;
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:111:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:124:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -179,10 +179,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:111:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -196,17 +196,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:124:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.strong.transformed.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.strong.transformed.expect
index ae147ff652c..6e8f47c1139 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.strong.transformed.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.strong.transformed.expect
@@ -16,29 +16,29 @@ library /*isNonNullableByDefault*/;
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:111:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:124:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -179,10 +179,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:111:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -196,17 +196,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:124:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.textual_outline.expect
index e4d0e54bb3d..1ff870a3d92 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.textual_outline.expect
@@ -43,4 +43,4 @@ class Class6 {
 
 testArgs() {}
 expect(expected, actual) {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.textual_outline_modelled.expect
index 0e60ce81a1b..a5efc108f44 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.textual_outline_modelled.expect
@@ -41,4 +41,4 @@ final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
 testArgs() {}
 testNoArgs() {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.weak.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.weak.expect
index 68c70e19474..9eec1ab9420 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.weak.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.weak.expect
@@ -16,29 +16,29 @@ library /*isNonNullableByDefault*/;
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:111:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:124:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -179,10 +179,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:111:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -196,17 +196,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:124:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.weak.modular.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.weak.modular.expect
index 68c70e19474..9eec1ab9420 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.weak.modular.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.weak.modular.expect
@@ -16,29 +16,29 @@ library /*isNonNullableByDefault*/;
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:111:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:124:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -179,10 +179,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:111:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -196,17 +196,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:124:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.weak.transformed.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.weak.transformed.expect
index ae147ff652c..6e8f47c1139 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.weak.transformed.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.weak.transformed.expect
@@ -16,29 +16,29 @@ library /*isNonNullableByDefault*/;
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:111:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:124:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -179,10 +179,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:111:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -196,17 +196,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:124:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart
index f966b5bc9ad..adc90bebb24 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart
@@ -20,7 +20,7 @@ class Class2 {
   final int field;
 
   Class2._(this.field);
-  factory Class2({int field: 42}) => new Class2._(field);
+  factory Class2({int field = 42}) => new Class2._(field);
 }
 
 void testDefaultValues() {
@@ -61,7 +61,7 @@ expect(expected, actual) {
   if (expected != actual) throw 'Expected $expected, actual $actual';
 }
 
-throws(Function() f, {bool inSoundModeOnly: false}) {
+throws(Function() f, {bool inSoundModeOnly = false}) {
   try {
     f();
   } catch (e) {
@@ -72,4 +72,4 @@ throws(Function() f, {bool inSoundModeOnly: false}) {
     return;
   }
   throw 'Expected exception';
-}
\ No newline at end of file
+}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart.textual_outline.expect
index 99a80f2cc9b..c9ef269ca9e 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart.textual_outline.expect
@@ -10,9 +10,9 @@ class Class1 {
 class Class2 {
   final int field;
   Class2._(this.field);
-  factory Class2({int field: 42}) => new Class2._(field);
+  factory Class2({int field = 42}) => new Class2._(field);
 }
 
 void testDefaultValues() {}
 expect(expected, actual) {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart.textual_outline_modelled.expect
index 4f1856825ad..9da97d8fb53 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart.textual_outline_modelled.expect
@@ -6,12 +6,12 @@ class Class1 {
 
 class Class2 {
   Class2._(this.field);
-  factory Class2({int field: 42}) => new Class2._(field);
+  factory Class2({int field = 42}) => new Class2._(field);
   final int field;
 }
 
 expect(expected, actual) {}
 final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
 void testDefaultValues() {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart b/pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart
index ff03d6ee600..7a9de650ecc 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart
@@ -128,7 +128,7 @@ expect(expected, actual) {
   if (expected != actual) throw 'Expected $expected, actual $actual';
 }
 
-throws(Function() f, {bool inSoundModeOnly: false}) {
+throws(Function() f, {bool inSoundModeOnly = false}) {
   try {
     f();
   } catch (e) {
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart.textual_outline.expect
index 4166ca79fa8..35564e22072 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart.textual_outline.expect
@@ -3,4 +3,4 @@ import 'main_lib.dart';
 final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
 expect(expected, actual) {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart.textual_outline_modelled.expect
index 26f0c4189db..7411d0adbfc 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart.textual_outline_modelled.expect
@@ -3,4 +3,4 @@ import 'main_lib.dart';
 expect(expected, actual) {}
 final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart
index 12a4640f46a..cf4bcc64aee 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart
@@ -105,7 +105,7 @@ expect(expected, actual) {
   if (expected != actual) throw 'Expected $expected, actual $actual';
 }
 
-throws(Function() f, {bool inSoundModeOnly: false}) {
+throws(Function() f, {bool inSoundModeOnly = false}) {
   try {
     f();
   } catch (e) {
@@ -116,4 +116,4 @@ throws(Function() f, {bool inSoundModeOnly: false}) {
     return;
   }
   throw 'Expected exception';
-}
\ No newline at end of file
+}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart.textual_outline.expect
index 7eeba1a4efb..f0951660d7d 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart.textual_outline.expect
@@ -15,4 +15,4 @@ class Class4int extends Class4<Class4int> {}
 
 testBounded() {}
 expect(expected, actual) {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart.textual_outline_modelled.expect
index 02d0ff2f3a3..4961c4338dc 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart.textual_outline_modelled.expect
@@ -13,4 +13,4 @@ final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
 testBounded() {}
 testGeneric() {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart
index a8d167ac53b..7184a2ea00d 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart
@@ -120,7 +120,7 @@ expect(expected, actual) {
   if (expected != actual) throw 'Expected $expected, actual $actual';
 }
 
-throws(Function() f, {bool inSoundModeOnly: false}) {
+throws(Function() f, {bool inSoundModeOnly = false}) {
   try {
     f();
   } catch (e) {
@@ -131,4 +131,4 @@ throws(Function() f, {bool inSoundModeOnly: false}) {
     return;
   }
   throw 'Expected exception';
-}
\ No newline at end of file
+}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart.textual_outline.expect
index b692fbf6dd8..fb58a349e5a 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart.textual_outline.expect
@@ -30,4 +30,4 @@ class Class4int extends Class4<Class4int> {
 
 testBounded() {}
 expect(expected, actual) {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart.textual_outline_modelled.expect
index c82d489b94b..15330202b83 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart.textual_outline_modelled.expect
@@ -28,4 +28,4 @@ final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
 testBounded() {}
 testGeneric() {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart
index 302f3805f9d..2c0141a1fde 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart
@@ -120,7 +120,7 @@ expect(expected, actual) {
   if (expected != actual) throw 'Expected $expected, actual $actual';
 }
 
-throws(Function() f, {bool inSoundModeOnly: false}) {
+throws(Function() f, {bool inSoundModeOnly = false}) {
   try {
     f();
   } catch (e) {
@@ -131,4 +131,4 @@ throws(Function() f, {bool inSoundModeOnly: false}) {
     return;
   }
   throw 'Expected exception';
-}
\ No newline at end of file
+}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart.textual_outline.expect
index ad86735a38b..11842a034e0 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart.textual_outline.expect
@@ -30,4 +30,4 @@ class Class4int extends Class4<Class4int> {
 
 testBounded() {}
 expect(expected, actual) {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart.textual_outline_modelled.expect
index 24223f76c61..0d785b42ab1 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart.textual_outline_modelled.expect
@@ -28,4 +28,4 @@ final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
 testBounded() {}
 testGeneric() {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart b/pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart
index 1750b681fcb..4ef0da3c57f 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart
@@ -62,7 +62,7 @@ expect(expected, actual) {
   if (expected != actual) throw 'Expected $expected, actual $actual';
 }
 
-throws(Function() f, {bool inSoundModeOnly: false}) {
+throws(Function() f, {bool inSoundModeOnly = false}) {
   try {
     f();
   } catch (e) {
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart.textual_outline.expect
index f48ab148007..6c90015c12c 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart.textual_outline.expect
@@ -19,4 +19,4 @@ var Class1_new = Class1.new;
 var Class2_new = Class2.new;
 testInferred() {}
 expect(expected, actual) {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart.textual_outline_modelled.expect
index 99d1f464644..df06aa67b00 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart.textual_outline_modelled.expect
@@ -16,6 +16,6 @@ expect(expected, actual) {}
 final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
 testInferred() {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
 var Class1_new = Class1.new;
 var Class2_new = Class2.new;
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart
index bb0409507e9..f8c1437e458 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart
@@ -16,9 +16,9 @@ class Class1 {
 }
 
 class Class2 {
-    Class2.__();
-    factory Class2._() => Class2.__();
-    factory Class2.named() = Class2._;
+  Class2.__();
+  factory Class2._() => Class2.__();
+  factory Class2.named() = Class2._;
 }
 
 testNoArgs() {
@@ -71,8 +71,7 @@ class Class6 {
   final int field3;
 
   Class6._(this.field1, {this.field2, required this.field3});
-  factory Class6(int field1, {int? field2, required int field3}) =
-      Class6._;
+  factory Class6(int field1, {int? field2, required int field3}) = Class6._;
 }
 
 class Class7a implements Class7b {
@@ -119,7 +118,6 @@ testArgs() {
   dynamic f4b = Class4.new;
   throws(() => f4b(42, 87));
 
-
   var f5a = Class5.new;
   var c5a = f5a(42);
   expect(42, c5a.field1);
@@ -191,7 +189,7 @@ expect(expected, actual) {
   if (expected != actual) throw 'Expected $expected, actual $actual';
 }
 
-throws(Function() f, {bool inSoundModeOnly: false}) {
+throws(Function() f, {bool inSoundModeOnly = false}) {
   try {
     f();
   } catch (e) {
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.strong.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.strong.expect
index 214d5831e70..96ba22eacb7 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.strong.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.strong.expect
@@ -2,43 +2,43 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f3a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:102:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f3a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:116:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:131:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:132:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:146:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:147:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -191,10 +191,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:102:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -210,7 +210,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:116:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -225,10 +225,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:131:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:132:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -242,17 +242,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:146:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:147:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.strong.transformed.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.strong.transformed.expect
index dcb045ddd39..5744595a802 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.strong.transformed.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.strong.transformed.expect
@@ -2,43 +2,43 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f3a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:102:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f3a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:116:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:131:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:132:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:146:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:147:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -191,10 +191,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:102:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -210,7 +210,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:116:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -225,10 +225,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:131:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:132:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -242,17 +242,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:146:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:147:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.textual_outline.expect
index 7cf5cb18f89..9dd4a262ea5 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.textual_outline.expect
@@ -61,4 +61,4 @@ class Class8b<T> {
 
 testArgs() {}
 expect(expected, actual) {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.textual_outline_modelled.expect
index e522b6cfa20..8026c5b9108 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.textual_outline_modelled.expect
@@ -59,4 +59,4 @@ final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
 testArgs() {}
 testNoArgs() {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.expect
index 214d5831e70..96ba22eacb7 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.expect
@@ -2,43 +2,43 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f3a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:102:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f3a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:116:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:131:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:132:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:146:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:147:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -191,10 +191,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:102:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -210,7 +210,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:116:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -225,10 +225,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:131:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:132:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -242,17 +242,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:146:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:147:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.modular.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.modular.expect
index 214d5831e70..96ba22eacb7 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.modular.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.modular.expect
@@ -2,43 +2,43 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f3a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:102:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f3a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:116:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:131:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:132:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:146:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:147:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -191,10 +191,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:102:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -210,7 +210,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:116:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -225,10 +225,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:131:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:132:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -242,17 +242,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:146:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:147:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.outline.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.outline.expect
index d38cf020c51..8d19be13615 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.outline.expect
@@ -133,7 +133,7 @@ Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tea
 Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:53:7 -> ConstructorTearOffConstant(Class4.)
 Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:60:7 -> ConstructorTearOffConstant(Class5.)
 Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:68:7 -> ConstructorTearOffConstant(Class6.)
-Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:82:7 -> ConstructorTearOffConstant(Class7b.)
-Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:91:7 -> ConstructorTearOffConstant(Class8b.)
-Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:91:7 -> ConstructorTearOffConstant(Class8b.fact)
+Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:81:7 -> ConstructorTearOffConstant(Class7b.)
+Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:90:7 -> ConstructorTearOffConstant(Class8b.)
+Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:90:7 -> ConstructorTearOffConstant(Class8b.fact)
 Extra constant evaluation: evaluated: 66, effectively constant: 9
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.transformed.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.transformed.expect
index dcb045ddd39..5744595a802 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.transformed.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.transformed.expect
@@ -2,43 +2,43 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f3a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:102:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f3a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:116:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:131:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:132:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:146:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:147:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -191,10 +191,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:102:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:101:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -210,7 +210,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:117:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:116:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -225,10 +225,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:131:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:132:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -242,17 +242,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:146:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:147:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart
index ef380c5b1c7..6b6143602a2 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart
@@ -19,7 +19,7 @@ class Class1 {
 class Class2 {
   final int field;
 
-  Class2._({this.field: 42});
+  Class2._({this.field = 42});
   factory Class2({int field}) = Class2._;
 }
 
@@ -61,7 +61,7 @@ expect(expected, actual) {
   if (expected != actual) throw 'Expected $expected, actual $actual';
 }
 
-throws(Function() f, {bool inSoundModeOnly: false}) {
+throws(Function() f, {bool inSoundModeOnly = false}) {
   try {
     f();
   } catch (e) {
@@ -72,4 +72,4 @@ throws(Function() f, {bool inSoundModeOnly: false}) {
     return;
   }
   throw 'Expected exception';
-}
\ No newline at end of file
+}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart.textual_outline.expect
index 119477625d9..ecf8a115ef0 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart.textual_outline.expect
@@ -9,10 +9,10 @@ class Class1 {
 
 class Class2 {
   final int field;
-  Class2._({this.field: 42});
+  Class2._({this.field = 42});
   factory Class2({int field}) = Class2._;
 }
 
 void testDefaultValues() {}
 expect(expected, actual) {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart.textual_outline_modelled.expect
index c51e2038870..4614f048fe6 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart.textual_outline_modelled.expect
@@ -5,7 +5,7 @@ class Class1 {
 }
 
 class Class2 {
-  Class2._({this.field: 42});
+  Class2._({this.field = 42});
   factory Class2({int field}) = Class2._;
   final int field;
 }
@@ -13,5 +13,5 @@ class Class2 {
 expect(expected, actual) {}
 final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
 void testDefaultValues() {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart
index 605ae053e49..de3d658c642 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart
@@ -138,7 +138,7 @@ expect(expected, actual) {
   if (expected != actual) throw 'Expected $expected, actual $actual';
 }
 
-throws(Function() f, {bool inSoundModeOnly: false}) {
+throws(Function() f, {bool inSoundModeOnly = false}) {
   try {
     f();
   } catch (e) {
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart.textual_outline.expect
index 90fc9da3959..66ed88fd73e 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart.textual_outline.expect
@@ -19,4 +19,4 @@ class Class1 {
 
 testDefaultValues() {}
 expect(expected, actual) {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart.textual_outline_modelled.expect
index 5735aefc51e..c34dca813c5 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart.textual_outline_modelled.expect
@@ -18,4 +18,4 @@ expect(expected, actual) {}
 final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
 testDefaultValues() {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_from.dart b/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_from.dart
index 6dd9ff1f1d8..2f257f6ad1f 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_from.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_from.dart
@@ -38,7 +38,7 @@ main() {
   aFactInst(true, c: 87);
   aFactInst(false, c: 87, b: '');
   aRedirectInst(true);
-  
+
   var bNew = B.new;
   var bNamed = B.named;
   var bFact = B.fact;
@@ -75,6 +75,6 @@ main() {
 class Class<S, T> {
   Class(S a, T b);
   Class.named(S a, [T? b, int c = 42]);
-  factory Class.fact(S a, {T? b, int c: 42}) => Class.named(a, b, c);
+  factory Class.fact(S a, {T? b, int c = 42}) => Class.named(a, b, c);
   factory Class.redirect(S a) = Class.named;
 }
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_from.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_from.dart.textual_outline.expect
index d0244dbfad1..37ae2ac733d 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_from.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_from.dart.textual_outline.expect
@@ -6,6 +6,6 @@ main() {}
 class Class<S, T> {
   Class(S a, T b);
   Class.named(S a, [T? b, int c = 42]);
-  factory Class.fact(S a, {T? b, int c: 42}) => Class.named(a, b, c);
+  factory Class.fact(S a, {T? b, int c = 42}) => Class.named(a, b, c);
   factory Class.redirect(S a) = Class.named;
 }
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_from.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_from.dart.textual_outline_modelled.expect
index 704e8ee6d4b..0d2b9fdbeaa 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_from.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_from.dart.textual_outline_modelled.expect
@@ -4,7 +4,7 @@ part 'typedef_from_part.dart';
 class Class<S, T> {
   Class(S a, T b);
   Class.named(S a, [T? b, int c = 42]);
-  factory Class.fact(S a, {T? b, int c: 42}) => Class.named(a, b, c);
+  factory Class.fact(S a, {T? b, int c = 42}) => Class.named(a, b, c);
   factory Class.redirect(S a) = Class.named;
 }
 
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart b/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart
index 0433631d005..afe92aac28c 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart
@@ -172,7 +172,7 @@ expect(expected, actual) {
   if (expected != actual) throw 'Expected $expected, actual $actual';
 }
 
-throws(Function() f, {bool inSoundModeOnly: false}) {
+throws(Function() f, {bool inSoundModeOnly = false}) {
   try {
     f();
   } catch (e) {
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart.textual_outline.expect
index fa1b6a2448c..73d0720ca0b 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart.textual_outline.expect
@@ -18,4 +18,4 @@ typedef DB2<X extends num> = B<X>;
 typedef DB3<X extends num, Y extends String> = B<X>;
 main() {}
 expect(expected, actual) {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart.textual_outline_modelled.expect
index f65e85833e6..9e88a76ee92 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart.textual_outline_modelled.expect
@@ -12,7 +12,7 @@ class B<X> {
 expect(expected, actual) {}
 final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
 typedef DA1 = A;
 typedef DA2<X extends num> = A;
 typedef DB1 = B<String>;
diff --git a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart
index 4ac8aead8e1..c889570f09c 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart
+++ b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart
@@ -71,8 +71,7 @@ class Class6 {
   final int field3;
 
   Class6._(this.field1, {this.field2, required this.field3});
-  factory Class6(int field1, {int? field2, required int field3}) =
-      Class6._;
+  factory Class6(int field1, {int? field2, required int field3}) = Class6._;
 }
 
 class Class7a implements Class7b {
@@ -117,7 +116,6 @@ testArgs() {
   dynamic f4b = Class4.new;
   throws(() => f4b(42, 87));
 
-
   var f5a = Class5.new;
   var c5a = f5a(42);
   expect(42, c5a.field1);
@@ -180,7 +178,7 @@ expect(expected, actual) {
   if (expected != actual) throw 'Expected $expected, actual $actual';
 }
 
-throws(Function() f, {bool inSoundModeOnly: false}) {
+throws(Function() f, {bool inSoundModeOnly = false}) {
   try {
     f();
   } catch (e) {
diff --git a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.strong.expect b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.strong.expect
index 05e5e9dfc44..886b1579149 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.strong.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.strong.expect
@@ -2,43 +2,43 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:98:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f3a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f3a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:114:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:128:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:140:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:141:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -149,10 +149,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:98:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -168,7 +168,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:114:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -183,10 +183,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:128:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -200,17 +200,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:140:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:141:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.strong.transformed.expect b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.strong.transformed.expect
index c321ab51dc5..5552ed97971 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.strong.transformed.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.strong.transformed.expect
@@ -2,43 +2,43 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:98:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f3a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f3a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:114:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:128:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:140:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:141:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -149,10 +149,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:98:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -168,7 +168,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:114:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -183,10 +183,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:128:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -200,17 +200,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:140:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:141:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.textual_outline.expect b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.textual_outline.expect
index 2fa25d6519a..9859f5a8420 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.textual_outline.expect
@@ -59,4 +59,4 @@ class Class8b<T> {
 
 testArgs() {}
 expect(expected, actual) {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.textual_outline_modelled.expect
index 0500e74c9e6..eb5d128b614 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.textual_outline_modelled.expect
@@ -57,4 +57,4 @@ final bool inSoundMode = <int?>[] is! List<int>;
 main() {}
 testArgs() {}
 testNoArgs() {}
-throws(Function() f, {bool inSoundModeOnly: false}) {}
+throws(Function() f, {bool inSoundModeOnly = false}) {}
diff --git a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.expect b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.expect
index 05e5e9dfc44..886b1579149 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.expect
@@ -2,43 +2,43 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:98:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f3a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f3a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:114:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:128:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:140:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:141:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -149,10 +149,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:98:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -168,7 +168,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:114:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -183,10 +183,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:128:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -200,17 +200,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:140:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:141:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.modular.expect b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.modular.expect
index 05e5e9dfc44..886b1579149 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.modular.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.modular.expect
@@ -2,43 +2,43 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:98:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f3a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f3a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:114:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:128:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:140:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:141:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -149,10 +149,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:98:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -168,7 +168,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:114:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -183,10 +183,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:128:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -200,17 +200,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:140:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:141:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.outline.expect b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.outline.expect
index 23dbb32f1c5..c28a7c44829 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.outline.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.outline.expect
@@ -91,6 +91,6 @@ Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tea
 Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:53:7 -> ConstructorTearOffConstant(Class4.)
 Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:60:7 -> ConstructorTearOffConstant(Class5.)
 Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:68:7 -> ConstructorTearOffConstant(Class6.)
-Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:82:7 -> ConstructorTearOffConstant(Class7b.)
-Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:90:7 -> ConstructorTearOffConstant(Class8b.)
+Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:81:7 -> ConstructorTearOffConstant(Class7b.)
+Evaluated: ConstructorTearOff @ org-dartlang-testcase:///redirecting_factory_tear_off.dart:89:7 -> ConstructorTearOffConstant(Class8b.)
 Extra constant evaluation: evaluated: 31, effectively constant: 8
diff --git a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.transformed.expect b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.transformed.expect
index c321ab51dc5..5552ed97971 100644
--- a/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.transformed.expect
+++ b/pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.transformed.expect
@@ -2,43 +2,43 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:98:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f3a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f3a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:114:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f4a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f5a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:128:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 // Try removing the extra positional arguments.
 //     f5a(42, 87, 123); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:140:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:141:8: Error: Required named parameter 'field3' must be provided.
 //     f6a(42); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 // Try removing the extra positional arguments.
 //     f6a(42, 87); // error
 //        ^
 //
-// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+// pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Too few positional arguments: 1 required, 0 given.
 //     f6a(field1: 87, field2: 87); // error
 //        ^
 //
@@ -149,10 +149,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:98:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -168,7 +168,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:114:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -183,10 +183,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:127:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:128:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -200,17 +200,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:140:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:141:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };
diff --git a/pkg/front_end/testcases/dart2js/tear_off_patch/main.dart.weak.outline.expect b/pkg/front_end/testcases/dart2js/tear_off_patch/main.dart.weak.outline.expect
index 49786e99904..a02abcd0127 100644
--- a/pkg/front_end/testcases/dart2js/tear_off_patch/main.dart.weak.outline.expect
+++ b/pkg/front_end/testcases/dart2js/tear_off_patch/main.dart.weak.outline.expect
@@ -66,12 +66,12 @@ static method _#AliasImpl#patched#tearOff<T extends core::num>({has-declared-ini
 
 Extra constant evaluation status:
 Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:6:47 -> InstanceConstant(const _Patch{})
-Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:7:10 -> InstanceConstant(const _Patch{})
-Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:8:29 -> InstanceConstant(const _Patch{})
+Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:7:9 -> InstanceConstant(const _Patch{})
+Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:8:28 -> InstanceConstant(const _Patch{})
 Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:12:22 -> InstanceConstant(const _Patch{})
-Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:15:12 -> InstanceConstant(const _Patch{})
+Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:15:11 -> InstanceConstant(const _Patch{})
 Evaluated: ConstructorTearOff @ org-dartlang-testcase:///origin_lib.dart:5:7 -> ConstructorTearOffConstant(Class.redirect)
 Evaluated: ConstructorTearOff @ org-dartlang-testcase:///origin_lib.dart:5:7 -> ConstructorTearOffConstant(Class.redirect2)
-Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:18:39 -> InstanceConstant(const _Patch{})
-Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:19:48 -> InstanceConstant(const _Patch{})
+Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:18:37 -> InstanceConstant(const _Patch{})
+Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:19:46 -> InstanceConstant(const _Patch{})
 Extra constant evaluation: evaluated: 52, effectively constant: 9
diff --git a/pkg/front_end/testcases/dart2js/tear_off_patch/origin_lib.dart b/pkg/front_end/testcases/dart2js/tear_off_patch/origin_lib.dart
index c29cf6f2e64..830d39b0e5f 100644
--- a/pkg/front_end/testcases/dart2js/tear_off_patch/origin_lib.dart
+++ b/pkg/front_end/testcases/dart2js/tear_off_patch/origin_lib.dart
@@ -3,16 +3,16 @@
 // BSD-style license that can be found in the LICENSE file.
 
 class Class<T> {
-  external Class({bool defaultValue: true, required T value});
-  external factory Class.fact({bool defaultValue: true, required T value});
+  external Class({bool defaultValue = true, required T value});
+  external factory Class.fact({bool defaultValue = true, required T value});
   external factory Class.redirect({bool defaultValue, required T value});
   external factory Class.redirect2({bool defaultValue, required T value});
 }
 
 class ClassImpl<T> implements Class<T> {
-  ClassImpl({bool defaultValue: true, required T value});
+  ClassImpl({bool defaultValue = true, required T value});
 
-  external ClassImpl.patched({bool defaultValue: true, required T value});
+  external ClassImpl.patched({bool defaultValue = true, required T value});
 }
 
 typedef Alias<T extends num> = Class<T>;
diff --git a/pkg/front_end/testcases/dart2js/tear_off_patch/patch_lib.dart b/pkg/front_end/testcases/dart2js/tear_off_patch/patch_lib.dart
index 77fdfb02e68..4812d1b2197 100644
--- a/pkg/front_end/testcases/dart2js/tear_off_patch/patch_lib.dart
+++ b/pkg/front_end/testcases/dart2js/tear_off_patch/patch_lib.dart
@@ -8,12 +8,12 @@ import 'dart:_js_helper';
 @patch
 class Class<T> {
   @patch
-  Class({bool defaultValue: true, required T value}) {
+  Class({bool defaultValue = true, required T value}) {
     print('patch Class');
   }
 
   @patch
-  factory Class.fact({bool defaultValue: true, required T value}) =>
+  factory Class.fact({bool defaultValue = true, required T value}) =>
       new ClassImpl<T>(defaultValue: defaultValue, value: value);
 
   @patch
@@ -27,7 +27,7 @@ class Class<T> {
 @patch
 class ClassImpl<T> implements Class<T> {
   @patch
-  ClassImpl.patched({bool defaultValue: true, required T value}) {
+  ClassImpl.patched({bool defaultValue = true, required T value}) {
     print('patch ClassImpl');
   }
 }
diff --git a/pkg/front_end/testcases/dartdevc/factory_patch/main.dart.weak.outline.expect b/pkg/front_end/testcases/dartdevc/factory_patch/main.dart.weak.outline.expect
index 6a8286ac6e9..e985b50a430 100644
--- a/pkg/front_end/testcases/dartdevc/factory_patch/main.dart.weak.outline.expect
+++ b/pkg/front_end/testcases/dartdevc/factory_patch/main.dart.weak.outline.expect
@@ -34,6 +34,6 @@ class Class extends core::Object {
 
 Extra constant evaluation status:
 Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:6:50 -> InstanceConstant(const _Patch{})
-Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:8:28 -> InstanceConstant(const _Patch{})
+Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:8:27 -> InstanceConstant(const _Patch{})
 Evaluated: StaticGet @ (unknown position in org-dartlang-testcase:///origin_lib.dart) -> InstanceConstant(const _Patch{})
 Extra constant evaluation: evaluated: 10, effectively constant: 3
diff --git a/pkg/front_end/testcases/dartdevc/factory_patch/origin_lib.dart b/pkg/front_end/testcases/dartdevc/factory_patch/origin_lib.dart
index e7895f2b483..9320d31b588 100644
--- a/pkg/front_end/testcases/dartdevc/factory_patch/origin_lib.dart
+++ b/pkg/front_end/testcases/dartdevc/factory_patch/origin_lib.dart
@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 class Class {
-  external factory Class.fact({bool defaultValue: true});
-  external const factory Class.constFact({bool defaultValue: true});
+  external factory Class.fact({bool defaultValue = true});
+  external const factory Class.constFact({bool defaultValue = true});
   //external const factory Class.redirect({bool defaultValue: true});
 }
diff --git a/pkg/front_end/testcases/dartdevc/factory_patch/patch_lib.dart b/pkg/front_end/testcases/dartdevc/factory_patch/patch_lib.dart
index 394388b3350..22349cc9f29 100644
--- a/pkg/front_end/testcases/dartdevc/factory_patch/patch_lib.dart
+++ b/pkg/front_end/testcases/dartdevc/factory_patch/patch_lib.dart
@@ -9,14 +9,14 @@ import 'dart:_js_helper';
 class Class {
   final bool defaultValue;
 
-  const Class._internal({this.defaultValue: false});
+  const Class._internal({this.defaultValue = false});
 
   @patch
-  factory Class.fact({bool defaultValue: true}) =>
+  factory Class.fact({bool defaultValue = true}) =>
       new Class._internal(defaultValue: defaultValue);
 
   @patch
-  factory Class.constFact({bool defaultValue: true}) => throw 'unsupported';
+  factory Class.constFact({bool defaultValue = true}) => throw 'unsupported';
 
   /*@patch
   const factory Class.redirect({bool defaultValue: true}) =
diff --git a/pkg/front_end/testcases/general/constants/issue_43431.dart b/pkg/front_end/testcases/general/constants/issue_43431.dart
index c333e70eebd..10288e3e9ac 100644
--- a/pkg/front_end/testcases/general/constants/issue_43431.dart
+++ b/pkg/front_end/testcases/general/constants/issue_43431.dart
@@ -3,8 +3,8 @@
 // BSD-style license that can be found in the LICENSE file.
 
 class Foo {
-  const Foo({bool x: true});
+  const Foo({bool x = true});
   const x = Foo();
 }
 
-main() {}
\ No newline at end of file
+main() {}
diff --git a/pkg/front_end/testcases/general/constants/issue_43431.dart.textual_outline.expect b/pkg/front_end/testcases/general/constants/issue_43431.dart.textual_outline.expect
index 3051321e188..bf3cae28ae5 100644
--- a/pkg/front_end/testcases/general/constants/issue_43431.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/general/constants/issue_43431.dart.textual_outline.expect
@@ -1,5 +1,5 @@
 class Foo {
-  const Foo({bool x: true});
+  const Foo({bool x = true});
   const x = Foo();
 }
 
diff --git a/pkg/front_end/testcases/general/constants/issue_43431.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/general/constants/issue_43431.dart.textual_outline_modelled.expect
index 3051321e188..bf3cae28ae5 100644
--- a/pkg/front_end/testcases/general/constants/issue_43431.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/general/constants/issue_43431.dart.textual_outline_modelled.expect
@@ -1,5 +1,5 @@
 class Foo {
-  const Foo({bool x: true});
+  const Foo({bool x = true});
   const x = Foo();
 }
 
diff --git a/pkg/front_end/testcases/general/constants/issue_43431.dart.weak.expect b/pkg/front_end/testcases/general/constants/issue_43431.dart.weak.expect
index 30bfb3c2c38..51a29fc0fb8 100644
--- a/pkg/front_end/testcases/general/constants/issue_43431.dart.weak.expect
+++ b/pkg/front_end/testcases/general/constants/issue_43431.dart.weak.expect
@@ -13,7 +13,7 @@ library /*isNonNullableByDefault*/;
 //             ^^^
 //
 // pkg/front_end/testcases/general/constants/issue_43431.dart:6:9: Error: Constructor is marked 'const' so all fields must be final.
-//   const Foo({bool x: true});
+//   const Foo({bool x = true});
 //         ^
 // pkg/front_end/testcases/general/constants/issue_43431.dart:7:9: Context: Field isn't final, but constructor is 'const'.
 //   const x = Foo();
diff --git a/pkg/front_end/testcases/general/constants/issue_43431.dart.weak.modular.expect b/pkg/front_end/testcases/general/constants/issue_43431.dart.weak.modular.expect
index 30bfb3c2c38..51a29fc0fb8 100644
--- a/pkg/front_end/testcases/general/constants/issue_43431.dart.weak.modular.expect
+++ b/pkg/front_end/testcases/general/constants/issue_43431.dart.weak.modular.expect
@@ -13,7 +13,7 @@ library /*isNonNullableByDefault*/;
 //             ^^^
 //
 // pkg/front_end/testcases/general/constants/issue_43431.dart:6:9: Error: Constructor is marked 'const' so all fields must be final.
-//   const Foo({bool x: true});
+//   const Foo({bool x = true});
 //         ^
 // pkg/front_end/testcases/general/constants/issue_43431.dart:7:9: Context: Field isn't final, but constructor is 'const'.
 //   const x = Foo();
diff --git a/pkg/front_end/testcases/general/constants/issue_43431.dart.weak.transformed.expect b/pkg/front_end/testcases/general/constants/issue_43431.dart.weak.transformed.expect
index 30bfb3c2c38..51a29fc0fb8 100644
--- a/pkg/front_end/testcases/general/constants/issue_43431.dart.weak.transformed.expect
+++ b/pkg/front_end/testcases/general/constants/issue_43431.dart.weak.transformed.expect
@@ -13,7 +13,7 @@ library /*isNonNullableByDefault*/;
 //             ^^^
 //
 // pkg/front_end/testcases/general/constants/issue_43431.dart:6:9: Error: Constructor is marked 'const' so all fields must be final.
-//   const Foo({bool x: true});
+//   const Foo({bool x = true});
 //         ^
 // pkg/front_end/testcases/general/constants/issue_43431.dart:7:9: Context: Field isn't final, but constructor is 'const'.
 //   const x = Foo();
diff --git a/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart b/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart
index 43e4383286b..7e2d315c3c4 100644
--- a/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart
+++ b/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart
@@ -29,8 +29,9 @@ class Foo<E> {
   final E value;
 
   const Foo(this.value,
-      {this.saved2: const bool.fromEnvironment("foo", defaultValue: barFromEnv),
-      bool x: const bool.fromEnvironment("foo", defaultValue: barFromEnv)})
+      {this.saved2 =
+          const bool.fromEnvironment("foo", defaultValue: barFromEnv),
+      bool x = const bool.fromEnvironment("foo", defaultValue: barFromEnv)})
       : saved = x;
 }
 
diff --git a/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.textual_outline.expect b/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.textual_outline.expect
index 602836a0f96..e0dea919b77 100644
--- a/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.textual_outline.expect
@@ -23,8 +23,9 @@ class Foo<E> {
       const bool.fromEnvironment("foo", defaultValue: barFromEnv);
   final E value;
   const Foo(this.value,
-      {this.saved2: const bool.fromEnvironment("foo", defaultValue: barFromEnv),
-      bool x: const bool.fromEnvironment("foo", defaultValue: barFromEnv)})
+      {this.saved2 =
+          const bool.fromEnvironment("foo", defaultValue: barFromEnv),
+      bool x = const bool.fromEnvironment("foo", defaultValue: barFromEnv)})
       : saved = x;
 }
 
diff --git a/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.textual_outline_modelled.expect
index 80ce4529778..e89a714678d 100644
--- a/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.textual_outline_modelled.expect
@@ -30,8 +30,9 @@ class ConstClassWithF {
 
 class Foo<E> {
   const Foo(this.value,
-      {this.saved2: const bool.fromEnvironment("foo", defaultValue: barFromEnv),
-      bool x: const bool.fromEnvironment("foo", defaultValue: barFromEnv)})
+      {this.saved2 =
+          const bool.fromEnvironment("foo", defaultValue: barFromEnv),
+      bool x = const bool.fromEnvironment("foo", defaultValue: barFromEnv)})
       : saved = x;
   const bool initialized =
       const bool.fromEnvironment("foo", defaultValue: barFromEnv);
diff --git a/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.expect b/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.expect
index 09a8f09f86a..02085bef90f 100644
--- a/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.expect
+++ b/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.expect
@@ -17,12 +17,12 @@ library /*isNonNullableByDefault*/;
 // const bool nullAwareOnNull = barFromEnvOrNull ?? true;
 //                              ^
 //
-// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:100:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
+// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:101:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
 //  - 'A' is from 'pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart'.
 //   const Class.method(T t) : this(-t);
 //                                  ^
 //
-// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:123:27: Error: The parameter 'named' can't have a value of 'null' because of its type 'int', but the implicit default value is 'null'.
+// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:124:27: Error: The parameter 'named' can't have a value of 'null' because of its type 'int', but the implicit default value is 'null'.
 // Try adding either an explicit non-'null' default value or the 'required' modifier.
 // int procedure(int i, {int named}) => i;
 //                           ^^^^^
@@ -91,7 +91,7 @@ class Class<T extends self::A> extends core::Object /*hasConstConstructor*/  {
     : this self::Class::•(t as{TypeError,ForDynamic,ForNonNullableByDefault} self::Class::T)
     ;
   const constructor method(self::Class::T t) → self::Class<self::Class::T>
-    : this self::Class::•(invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:100:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
+    : this self::Class::•(invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:101:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
  - 'A' is from 'pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart'.
   const Class.method(T t) : this(-t);
                                  ^" in t.{self::A::unary-}(){() → self::A} as{TypeError,ForNonNullableByDefault} Never)
@@ -151,7 +151,7 @@ static const field core::bool isMapOfMapOfInt2 = #C9;
 static const field core::Symbol symbolWithUnevaluatedParameter = #C37;
 static const field core::Symbol symbolWithInvalidName = #C38;
 static const field self::Class<self::B>? c0 = #C44;
-static const field self::Class<self::A>? c1 = invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:100:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
+static const field self::Class<self::A>? c1 = invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:101:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
  - 'A' is from 'pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart'.
   const Class.method(T t) : this(-t);
                                  ^";
@@ -171,7 +171,7 @@ static method procedure(core::int i, {core::int named = #C10}) → core::int
   return i;
 static method main() → dynamic {
   core::print(#C44);
-  core::print(invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:100:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
+  core::print(invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:101:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
  - 'A' is from 'pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart'.
   const Class.method(T t) : this(-t);
                                  ^");
@@ -273,13 +273,13 @@ constants  {
 
 Constructor coverage from constants:
 org-dartlang-testcase:///various.dart:
-- C. (from org-dartlang-testcase:///various.dart:92:9)
+- C. (from org-dartlang-testcase:///various.dart:93:9)
 - Object. (from org-dartlang-sdk:///sdk/lib/core/object.dart)
-- Class.redirect (from org-dartlang-testcase:///various.dart:99:9)
-- Class. (from org-dartlang-testcase:///various.dart:98:9)
-- A. (from org-dartlang-testcase:///various.dart:80:9)
-- Class.method (from org-dartlang-testcase:///various.dart:100:9)
-- Subclass. (from org-dartlang-testcase:///various.dart:104:9)
-- B. (from org-dartlang-testcase:///various.dart:86:9)
+- Class.redirect (from org-dartlang-testcase:///various.dart:100:9)
+- Class. (from org-dartlang-testcase:///various.dart:99:9)
+- A. (from org-dartlang-testcase:///various.dart:81:9)
+- Class.method (from org-dartlang-testcase:///various.dart:101:9)
+- Subclass. (from org-dartlang-testcase:///various.dart:105:9)
+- B. (from org-dartlang-testcase:///various.dart:87:9)
 - Foo. (from org-dartlang-testcase:///various.dart:31:9)
-- ConstClassWithF. (from org-dartlang-testcase:///various.dart:120:9)
+- ConstClassWithF. (from org-dartlang-testcase:///various.dart:121:9)
diff --git a/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.modular.expect b/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.modular.expect
index 09a8f09f86a..02085bef90f 100644
--- a/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.modular.expect
+++ b/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.modular.expect
@@ -17,12 +17,12 @@ library /*isNonNullableByDefault*/;
 // const bool nullAwareOnNull = barFromEnvOrNull ?? true;
 //                              ^
 //
-// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:100:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
+// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:101:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
 //  - 'A' is from 'pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart'.
 //   const Class.method(T t) : this(-t);
 //                                  ^
 //
-// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:123:27: Error: The parameter 'named' can't have a value of 'null' because of its type 'int', but the implicit default value is 'null'.
+// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:124:27: Error: The parameter 'named' can't have a value of 'null' because of its type 'int', but the implicit default value is 'null'.
 // Try adding either an explicit non-'null' default value or the 'required' modifier.
 // int procedure(int i, {int named}) => i;
 //                           ^^^^^
@@ -91,7 +91,7 @@ class Class<T extends self::A> extends core::Object /*hasConstConstructor*/  {
     : this self::Class::•(t as{TypeError,ForDynamic,ForNonNullableByDefault} self::Class::T)
     ;
   const constructor method(self::Class::T t) → self::Class<self::Class::T>
-    : this self::Class::•(invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:100:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
+    : this self::Class::•(invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:101:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
  - 'A' is from 'pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart'.
   const Class.method(T t) : this(-t);
                                  ^" in t.{self::A::unary-}(){() → self::A} as{TypeError,ForNonNullableByDefault} Never)
@@ -151,7 +151,7 @@ static const field core::bool isMapOfMapOfInt2 = #C9;
 static const field core::Symbol symbolWithUnevaluatedParameter = #C37;
 static const field core::Symbol symbolWithInvalidName = #C38;
 static const field self::Class<self::B>? c0 = #C44;
-static const field self::Class<self::A>? c1 = invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:100:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
+static const field self::Class<self::A>? c1 = invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:101:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
  - 'A' is from 'pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart'.
   const Class.method(T t) : this(-t);
                                  ^";
@@ -171,7 +171,7 @@ static method procedure(core::int i, {core::int named = #C10}) → core::int
   return i;
 static method main() → dynamic {
   core::print(#C44);
-  core::print(invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:100:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
+  core::print(invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:101:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
  - 'A' is from 'pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart'.
   const Class.method(T t) : this(-t);
                                  ^");
@@ -273,13 +273,13 @@ constants  {
 
 Constructor coverage from constants:
 org-dartlang-testcase:///various.dart:
-- C. (from org-dartlang-testcase:///various.dart:92:9)
+- C. (from org-dartlang-testcase:///various.dart:93:9)
 - Object. (from org-dartlang-sdk:///sdk/lib/core/object.dart)
-- Class.redirect (from org-dartlang-testcase:///various.dart:99:9)
-- Class. (from org-dartlang-testcase:///various.dart:98:9)
-- A. (from org-dartlang-testcase:///various.dart:80:9)
-- Class.method (from org-dartlang-testcase:///various.dart:100:9)
-- Subclass. (from org-dartlang-testcase:///various.dart:104:9)
-- B. (from org-dartlang-testcase:///various.dart:86:9)
+- Class.redirect (from org-dartlang-testcase:///various.dart:100:9)
+- Class. (from org-dartlang-testcase:///various.dart:99:9)
+- A. (from org-dartlang-testcase:///various.dart:81:9)
+- Class.method (from org-dartlang-testcase:///various.dart:101:9)
+- Subclass. (from org-dartlang-testcase:///various.dart:105:9)
+- B. (from org-dartlang-testcase:///various.dart:87:9)
 - Foo. (from org-dartlang-testcase:///various.dart:31:9)
-- ConstClassWithF. (from org-dartlang-testcase:///various.dart:120:9)
+- ConstClassWithF. (from org-dartlang-testcase:///various.dart:121:9)
diff --git a/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.outline.expect b/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.outline.expect
index aecdca68101..2752be8e582 100644
--- a/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.outline.expect
+++ b/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.outline.expect
@@ -17,12 +17,12 @@ library /*isNonNullableByDefault*/;
 // const bool nullAwareOnNull = barFromEnvOrNull ?? true;
 //                              ^
 //
-// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:100:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
+// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:101:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
 //  - 'A' is from 'pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart'.
 //   const Class.method(T t) : this(-t);
 //                                  ^
 //
-// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:123:27: Error: The parameter 'named' can't have a value of 'null' because of its type 'int', but the implicit default value is 'null'.
+// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:124:27: Error: The parameter 'named' can't have a value of 'null' because of its type 'int', but the implicit default value is 'null'.
 // Try adding either an explicit non-'null' default value or the 'required' modifier.
 // int procedure(int i, {int named}) => i;
 //                           ^^^^^
@@ -73,7 +73,7 @@ class Class<T extends self::A> extends core::Object /*hasConstConstructor*/  {
     : this self::Class::•(t as{TypeError,ForDynamic,ForNonNullableByDefault} self::Class::T)
     ;
   const constructor method(self::Class::T t) → self::Class<self::Class::T>
-    : this self::Class::•(invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:100:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
+    : this self::Class::•(invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:101:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
  - 'A' is from 'pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart'.
   const Class.method(T t) : this(-t);
                                  ^" in t.{self::A::unary-}(){() → self::A} as{TypeError,ForNonNullableByDefault} Never)
@@ -159,10 +159,10 @@ static const field core::int x = 42;
 
 
 Extra constant evaluation status:
-Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:32:27 -> BoolConstant(false)
-Evaluated with empty environment: StaticGet @ org-dartlang-testcase:///various.dart:32:69 -> BoolConstant(false)
-Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:33:21 -> BoolConstant(false)
-Evaluated with empty environment: StaticGet @ org-dartlang-testcase:///various.dart:33:63 -> BoolConstant(false)
+Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:33:17 -> BoolConstant(false)
+Evaluated with empty environment: StaticGet @ org-dartlang-testcase:///various.dart:33:59 -> BoolConstant(false)
+Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:34:22 -> BoolConstant(false)
+Evaluated with empty environment: StaticGet @ org-dartlang-testcase:///various.dart:34:64 -> BoolConstant(false)
 Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:7:31 -> BoolConstant(false)
 Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:8:30 -> BoolConstant(false)
 Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///various.dart:9:67 -> NullConstant(null)
@@ -170,62 +170,62 @@ Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-te
 Evaluated with empty environment: StaticGet @ org-dartlang-testcase:///various.dart:11:53 -> NullConstant(null)
 Evaluated: LogicalExpression @ org-dartlang-testcase:///various.dart:19:29 -> BoolConstant(true)
 Evaluated: StaticGet @ org-dartlang-testcase:///various.dart:22:29 -> IntConstant(42)
-Evaluated with empty environment: ConstructorInvocation @ org-dartlang-testcase:///various.dart:37:17 -> InstanceConstant(const Foo<int*>{Foo.saved: false, Foo.saved2: false, Foo.initialized: null, Foo.value: 42})
-Evaluated: Not @ org-dartlang-testcase:///various.dart:40:16 -> BoolConstant(false)
-Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///various.dart:42:46 -> BoolConstant(true)
-Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:42:23 -> BoolConstant(false)
-Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///various.dart:43:38 -> BoolConstant(false)
-Evaluated with empty environment: IsExpression @ org-dartlang-testcase:///various.dart:43:31 -> BoolConstant(false)
-Evaluated with empty environment: StaticGet @ org-dartlang-testcase:///various.dart:43:22 -> BoolConstant(true)
-Evaluated: ConditionalExpression @ org-dartlang-testcase:///various.dart:44:21 -> BoolConstant(true)
-Evaluated: ConditionalExpression @ org-dartlang-testcase:///various.dart:45:40 -> BoolConstant(false)
-Evaluated: ConditionalExpression @ org-dartlang-testcase:///various.dart:46:21 -> NullConstant(null)
-Evaluated: ConditionalExpression @ org-dartlang-testcase:///various.dart:47:40 -> BoolConstant(false)
-Evaluated: ListLiteral @ org-dartlang-testcase:///various.dart:49:28 -> ListConstant(const <Null>[null])
-Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:50:38 -> BoolConstant(true)
-Evaluated: ListLiteral @ org-dartlang-testcase:///various.dart:51:27 -> ListConstant(const <int*>[42])
-Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:52:36 -> BoolConstant(true)
-Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:53:31 -> BoolConstant(true)
-Evaluated: SetLiteral @ org-dartlang-testcase:///various.dart:54:26 -> SetConstant(const <int*>{42})
-Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:55:34 -> BoolConstant(true)
-Evaluated: MapLiteral @ org-dartlang-testcase:///various.dart:56:26 -> MapConstant(const <int*, int*>{42: 42})
-Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:57:34 -> BoolConstant(true)
-Evaluated: ListLiteral @ org-dartlang-testcase:///various.dart:58:33 -> ListConstant(const <List<int*>*>[const <int*>[42]])
-Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:61:48 -> BoolConstant(true)
-Evaluated: SetLiteral @ org-dartlang-testcase:///various.dart:62:31 -> SetConstant(const <Set<int*>*>{const <int*>{42}})
-Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:65:44 -> BoolConstant(true)
-Evaluated: MapLiteral @ org-dartlang-testcase:///various.dart:66:32 -> MapConstant(const <Map<int*, int*>*, int*>{const <int*, int*>{42: 42}: 42})
-Evaluated: MapLiteral @ org-dartlang-testcase:///various.dart:69:32 -> MapConstant(const <int*, Map<int*, int*>*>{42: const <int*, int*>{42: 42}})
-Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:72:46 -> BoolConstant(true)
+Evaluated with empty environment: ConstructorInvocation @ org-dartlang-testcase:///various.dart:38:17 -> InstanceConstant(const Foo<int*>{Foo.saved: false, Foo.saved2: false, Foo.initialized: null, Foo.value: 42})
+Evaluated: Not @ org-dartlang-testcase:///various.dart:41:16 -> BoolConstant(false)
+Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///various.dart:43:46 -> BoolConstant(true)
+Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:43:23 -> BoolConstant(false)
+Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///various.dart:44:38 -> BoolConstant(false)
+Evaluated with empty environment: IsExpression @ org-dartlang-testcase:///various.dart:44:31 -> BoolConstant(false)
+Evaluated with empty environment: StaticGet @ org-dartlang-testcase:///various.dart:44:22 -> BoolConstant(true)
+Evaluated: ConditionalExpression @ org-dartlang-testcase:///various.dart:45:21 -> BoolConstant(true)
+Evaluated: ConditionalExpression @ org-dartlang-testcase:///various.dart:46:40 -> BoolConstant(false)
+Evaluated: ConditionalExpression @ org-dartlang-testcase:///various.dart:47:21 -> NullConstant(null)
+Evaluated: ConditionalExpression @ org-dartlang-testcase:///various.dart:48:40 -> BoolConstant(false)
+Evaluated: ListLiteral @ org-dartlang-testcase:///various.dart:50:28 -> ListConstant(const <Null>[null])
+Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:51:38 -> BoolConstant(true)
+Evaluated: ListLiteral @ org-dartlang-testcase:///various.dart:52:27 -> ListConstant(const <int*>[42])
+Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:53:36 -> BoolConstant(true)
+Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:54:31 -> BoolConstant(true)
+Evaluated: SetLiteral @ org-dartlang-testcase:///various.dart:55:26 -> SetConstant(const <int*>{42})
+Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:56:34 -> BoolConstant(true)
+Evaluated: MapLiteral @ org-dartlang-testcase:///various.dart:57:26 -> MapConstant(const <int*, int*>{42: 42})
+Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:58:34 -> BoolConstant(true)
+Evaluated: ListLiteral @ org-dartlang-testcase:///various.dart:59:33 -> ListConstant(const <List<int*>*>[const <int*>[42]])
+Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:62:48 -> BoolConstant(true)
+Evaluated: SetLiteral @ org-dartlang-testcase:///various.dart:63:31 -> SetConstant(const <Set<int*>*>{const <int*>{42}})
+Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:66:44 -> BoolConstant(true)
+Evaluated: MapLiteral @ org-dartlang-testcase:///various.dart:67:32 -> MapConstant(const <Map<int*, int*>*, int*>{const <int*, int*>{42: 42}: 42})
+Evaluated: MapLiteral @ org-dartlang-testcase:///various.dart:70:32 -> MapConstant(const <int*, Map<int*, int*>*>{42: const <int*, int*>{42: 42}})
 Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:73:46 -> BoolConstant(true)
-Evaluated with empty environment: ConstructorInvocation @ org-dartlang-testcase:///various.dart:76:11 -> SymbolConstant(#)
-Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:76:25 -> StringConstant("")
-Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:77:44 -> SymbolConstant(#42)
-Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:107:17 -> BoolConstant(false)
-Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:107:71 -> InstanceConstant(const C{})
+Evaluated: IsExpression @ org-dartlang-testcase:///various.dart:74:46 -> BoolConstant(true)
+Evaluated with empty environment: ConstructorInvocation @ org-dartlang-testcase:///various.dart:77:11 -> SymbolConstant(#)
+Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:77:25 -> StringConstant("")
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:78:44 -> SymbolConstant(#42)
 Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:108:17 -> BoolConstant(false)
-Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:108:69 -> InstanceConstant(const A{})
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:108:71 -> InstanceConstant(const C{})
 Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:109:17 -> BoolConstant(false)
-Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:109:65 -> InstanceConstant(const C{})
-Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///various.dart:110:38 -> InstanceConstant(const Class<A*>{})
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:109:69 -> InstanceConstant(const A{})
 Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:110:17 -> BoolConstant(false)
-Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:110:53 -> InstanceConstant(const Class<A*>{})
-Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///various.dart:111:38 -> InstanceConstant(const Class<B*>{})
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:110:65 -> InstanceConstant(const C{})
+Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///various.dart:111:38 -> InstanceConstant(const Class<A*>{})
 Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:111:17 -> BoolConstant(false)
-Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:111:53 -> InstanceConstant(const Class<B*>{})
-Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///various.dart:112:38 -> InstanceConstant(const Subclass<A*>{})
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:111:53 -> InstanceConstant(const Class<A*>{})
+Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///various.dart:112:38 -> InstanceConstant(const Class<B*>{})
 Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:112:17 -> BoolConstant(false)
-Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:112:53 -> InstanceConstant(const Subclass<A*>{})
-Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///various.dart:113:38 -> InstanceConstant(const Subclass<B*>{})
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:112:53 -> InstanceConstant(const Class<B*>{})
+Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///various.dart:113:38 -> InstanceConstant(const Subclass<A*>{})
 Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:113:17 -> BoolConstant(false)
-Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:113:53 -> InstanceConstant(const Subclass<B*>{})
-Evaluated: TypeLiteral @ org-dartlang-testcase:///various.dart:116:11 -> TypeLiteralConstant(int* Function(int*, {named: int*})*)
-Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:125:48 -> InstanceConstant(const ConstClassWithF{ConstClassWithF.foo: procedure})
-Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:127:35 -> BoolConstant(false)
-Evaluated with empty environment: Not @ org-dartlang-testcase:///various.dart:128:33 -> BoolConstant(true)
-Evaluated with empty environment: StaticGet @ org-dartlang-testcase:///various.dart:128:34 -> BoolConstant(false)
-Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///various.dart:130:33 -> NullConstant(null)
-Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:130:10 -> BoolConstant(false)
-Evaluated with empty environment: StaticGet @ org-dartlang-testcase:///various.dart:130:35 -> BoolConstant(false)
-Evaluated with empty environment: StaticGet @ org-dartlang-testcase:///various.dart:131:37 -> NullConstant(null)
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:113:53 -> InstanceConstant(const Subclass<A*>{})
+Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///various.dart:114:38 -> InstanceConstant(const Subclass<B*>{})
+Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:114:17 -> BoolConstant(false)
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:114:53 -> InstanceConstant(const Subclass<B*>{})
+Evaluated: TypeLiteral @ org-dartlang-testcase:///various.dart:117:11 -> TypeLiteralConstant(int* Function(int*, {named: int*})*)
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///various.dart:126:48 -> InstanceConstant(const ConstClassWithF{ConstClassWithF.foo: procedure})
+Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:128:35 -> BoolConstant(false)
+Evaluated with empty environment: Not @ org-dartlang-testcase:///various.dart:129:33 -> BoolConstant(true)
+Evaluated with empty environment: StaticGet @ org-dartlang-testcase:///various.dart:129:34 -> BoolConstant(false)
+Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///various.dart:131:33 -> NullConstant(null)
+Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///various.dart:131:10 -> BoolConstant(false)
+Evaluated with empty environment: StaticGet @ org-dartlang-testcase:///various.dart:131:35 -> BoolConstant(false)
+Evaluated with empty environment: StaticGet @ org-dartlang-testcase:///various.dart:132:37 -> NullConstant(null)
 Extra constant evaluation: evaluated: 108, effectively constant: 69
diff --git a/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.transformed.expect b/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.transformed.expect
index 7efbe06db5e..62eb1d849e3 100644
--- a/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.transformed.expect
+++ b/pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart.weak.transformed.expect
@@ -17,12 +17,12 @@ library /*isNonNullableByDefault*/;
 // const bool nullAwareOnNull = barFromEnvOrNull ?? true;
 //                              ^
 //
-// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:100:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
+// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:101:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
 //  - 'A' is from 'pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart'.
 //   const Class.method(T t) : this(-t);
 //                                  ^
 //
-// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:123:27: Error: The parameter 'named' can't have a value of 'null' because of its type 'int', but the implicit default value is 'null'.
+// pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:124:27: Error: The parameter 'named' can't have a value of 'null' because of its type 'int', but the implicit default value is 'null'.
 // Try adding either an explicit non-'null' default value or the 'required' modifier.
 // int procedure(int i, {int named}) => i;
 //                           ^^^^^
@@ -91,7 +91,7 @@ class Class<T extends self::A> extends core::Object /*hasConstConstructor*/  {
     : this self::Class::•(t as{TypeError,ForDynamic,ForNonNullableByDefault} self::Class::T)
     ;
   const constructor method(self::Class::T t) → self::Class<self::Class::T>
-    : this self::Class::•(invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:100:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
+    : this self::Class::•(invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:101:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
  - 'A' is from 'pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart'.
   const Class.method(T t) : this(-t);
                                  ^" in t.{self::A::unary-}(){() → self::A} as{TypeError,ForNonNullableByDefault} Never)
@@ -151,7 +151,7 @@ static const field core::bool isMapOfMapOfInt2 = #C9;
 static const field core::Symbol symbolWithUnevaluatedParameter = #C37;
 static const field core::Symbol symbolWithInvalidName = #C38;
 static const field self::Class<self::B>? c0 = #C44;
-static const field self::Class<self::A>? c1 = invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:100:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
+static const field self::Class<self::A>? c1 = invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:101:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
  - 'A' is from 'pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart'.
   const Class.method(T t) : this(-t);
                                  ^";
@@ -171,7 +171,7 @@ static method procedure(core::int i, {core::int named = #C10}) → core::int
   return i;
 static method main() → dynamic {
   core::print(#C44);
-  core::print(invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:100:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
+  core::print(invalid-expression "pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart:101:34: Error: The argument type 'A' can't be assigned to the parameter type 'T'.
  - 'A' is from 'pkg/front_end/testcases/general/constants/with_unevaluated_agnostic/various.dart'.
   const Class.method(T t) : this(-t);
                                  ^");
@@ -271,42 +271,42 @@ constants  {
 }
 
 Extra constant evaluation status:
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:32:27 -> BoolConstant(false)
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:33:21 -> BoolConstant(false)
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:33:17 -> BoolConstant(false)
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:34:22 -> BoolConstant(false)
 Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:28:13 -> BoolConstant(false)
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:137:9 -> InstanceConstant(const Class<A*>{})
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:138:9 -> InstanceConstant(const Class<B*>{})
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:139:9 -> InstanceConstant(const Subclass<A*>{})
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:140:9 -> InstanceConstant(const Subclass<B*>{})
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:141:9 -> InstanceConstant(const Foo<int*>{Foo.saved: false, Foo.saved2: false, Foo.initialized: false, Foo.value: 42})
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:138:9 -> InstanceConstant(const Class<A*>{})
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:139:9 -> InstanceConstant(const Class<B*>{})
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:140:9 -> InstanceConstant(const Subclass<A*>{})
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:141:9 -> InstanceConstant(const Subclass<B*>{})
 Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:142:9 -> InstanceConstant(const Foo<int*>{Foo.saved: false, Foo.saved2: false, Foo.initialized: false, Foo.value: 42})
 Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:143:9 -> InstanceConstant(const Foo<int*>{Foo.saved: false, Foo.saved2: false, Foo.initialized: false, Foo.value: 42})
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:144:9 -> InstanceConstant(const Foo<int*>{Foo.saved: false, Foo.saved2: false, Foo.initialized: false, Foo.value: 42})
 Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:7:31 -> BoolConstant(false)
 Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:8:30 -> BoolConstant(false)
 Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:9:67 -> NullConstant(null)
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:37:17 -> InstanceConstant(const Foo<int*>{Foo.saved: false, Foo.saved2: false, Foo.initialized: false, Foo.value: 42})
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:42:46 -> BoolConstant(true)
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:43:38 -> BoolConstant(false)
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:76:11 -> SymbolConstant(#)
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:110:38 -> InstanceConstant(const Class<A*>{})
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:111:38 -> InstanceConstant(const Class<B*>{})
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:112:38 -> InstanceConstant(const Subclass<A*>{})
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:113:38 -> InstanceConstant(const Subclass<B*>{})
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:127:35 -> BoolConstant(false)
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:128:33 -> BoolConstant(true)
-Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:130:33 -> NullConstant(null)
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:38:17 -> InstanceConstant(const Foo<int*>{Foo.saved: false, Foo.saved2: false, Foo.initialized: false, Foo.value: 42})
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:43:46 -> BoolConstant(true)
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:44:38 -> BoolConstant(false)
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:77:11 -> SymbolConstant(#)
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:111:38 -> InstanceConstant(const Class<A*>{})
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:112:38 -> InstanceConstant(const Class<B*>{})
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:113:38 -> InstanceConstant(const Subclass<A*>{})
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:114:38 -> InstanceConstant(const Subclass<B*>{})
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:128:35 -> BoolConstant(false)
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:129:33 -> BoolConstant(true)
+Evaluated with empty environment: ConstantExpression @ org-dartlang-testcase:///various.dart:131:33 -> NullConstant(null)
 Extra constant evaluation: evaluated: 62, effectively constant: 24
 
 
 Constructor coverage from constants:
 org-dartlang-testcase:///various.dart:
-- C. (from org-dartlang-testcase:///various.dart:92:9)
+- C. (from org-dartlang-testcase:///various.dart:93:9)
 - Object. (from org-dartlang-sdk:///sdk/lib/core/object.dart)
-- Class.redirect (from org-dartlang-testcase:///various.dart:99:9)
-- Class. (from org-dartlang-testcase:///various.dart:98:9)
-- A. (from org-dartlang-testcase:///various.dart:80:9)
-- Class.method (from org-dartlang-testcase:///various.dart:100:9)
-- Subclass. (from org-dartlang-testcase:///various.dart:104:9)
-- B. (from org-dartlang-testcase:///various.dart:86:9)
+- Class.redirect (from org-dartlang-testcase:///various.dart:100:9)
+- Class. (from org-dartlang-testcase:///various.dart:99:9)
+- A. (from org-dartlang-testcase:///various.dart:81:9)
+- Class.method (from org-dartlang-testcase:///various.dart:101:9)
+- Subclass. (from org-dartlang-testcase:///various.dart:105:9)
+- B. (from org-dartlang-testcase:///various.dart:87:9)
 - Foo. (from org-dartlang-testcase:///various.dart:31:9)
-- ConstClassWithF. (from org-dartlang-testcase:///various.dart:120:9)
+- ConstClassWithF. (from org-dartlang-testcase:///various.dart:121:9)
diff --git a/pkg/front_end/testcases/general/constructor_patch/main.dart.weak.outline.expect b/pkg/front_end/testcases/general/constructor_patch/main.dart.weak.outline.expect
index e8e0e7552e1..a17073523a2 100644
--- a/pkg/front_end/testcases/general/constructor_patch/main.dart.weak.outline.expect
+++ b/pkg/front_end/testcases/general/constructor_patch/main.dart.weak.outline.expect
@@ -35,7 +35,7 @@ class Class2 extends core::Object {
 
 Extra constant evaluation status:
 Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:6:49 -> InstanceConstant(const _Patch{})
-Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:7:44 -> InstanceConstant(const _Patch{})
+Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:7:43 -> InstanceConstant(const _Patch{})
 Evaluated: StaticGet @ org-dartlang-testcase:///patch_lib.dart:16:9 -> InstanceConstant(const _Patch{})
 Evaluated: StaticGet @ (unknown position in org-dartlang-testcase:///origin_lib.dart) -> InstanceConstant(const _Patch{})
 Extra constant evaluation: evaluated: 5, effectively constant: 4
diff --git a/pkg/front_end/testcases/general/constructor_patch/origin_lib.dart b/pkg/front_end/testcases/general/constructor_patch/origin_lib.dart
index 927aabf2e27..b2fd24243f1 100644
--- a/pkg/front_end/testcases/general/constructor_patch/origin_lib.dart
+++ b/pkg/front_end/testcases/general/constructor_patch/origin_lib.dart
@@ -3,8 +3,8 @@
 // BSD-style license that can be found in the LICENSE file.
 
 class Class {
-  external Class.generative({bool defaultValue: true});
-  external const Class.constGenerative({bool defaultValue: true});
+  external Class.generative({bool defaultValue = true});
+  external const Class.constGenerative({bool defaultValue = true});
 }
 
 class Class2 {
diff --git a/pkg/front_end/testcases/general/constructor_patch/patch_lib.dart b/pkg/front_end/testcases/general/constructor_patch/patch_lib.dart
index 2d8f750cb3f..5384dc60ba2 100644
--- a/pkg/front_end/testcases/general/constructor_patch/patch_lib.dart
+++ b/pkg/front_end/testcases/general/constructor_patch/patch_lib.dart
@@ -10,10 +10,10 @@ class Class {
   final bool defaultValue;
 
   @patch
-  Class.generative({this.defaultValue: true});
+  Class.generative({this.defaultValue = true});
 
   @patch
-  const Class.constGenerative({this.defaultValue: true});
+  const Class.constGenerative({this.defaultValue = true});
 }
 
 @patch
diff --git a/pkg/front_end/testcases/general/duplicated_named_args_3.dart b/pkg/front_end/testcases/general/duplicated_named_args_3.dart
index a33c6e1d4f9..54c08e45c01 100644
--- a/pkg/front_end/testcases/general/duplicated_named_args_3.dart
+++ b/pkg/front_end/testcases/general/duplicated_named_args_3.dart
@@ -6,7 +6,7 @@
 library test;
 
 class C {
-  static m({int a: 0}) {}
+  static m({int a = 0}) {}
 }
 
 void test() {
diff --git a/pkg/front_end/testcases/general/duplicated_named_args_3.dart.textual_outline.expect b/pkg/front_end/testcases/general/duplicated_named_args_3.dart.textual_outline.expect
index 0b2371ba37e..300d2dd6fc8 100644
--- a/pkg/front_end/testcases/general/duplicated_named_args_3.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/general/duplicated_named_args_3.dart.textual_outline.expect
@@ -1,7 +1,7 @@
 library test;
 
 class C {
-  static m({int a: 0}) {}
+  static m({int a = 0}) {}
 }
 
 void test() {}
diff --git a/pkg/front_end/testcases/general/duplicated_named_args_3.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/general/duplicated_named_args_3.dart.textual_outline_modelled.expect
index 461825b0511..e777dc3db2a 100644
--- a/pkg/front_end/testcases/general/duplicated_named_args_3.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/general/duplicated_named_args_3.dart.textual_outline_modelled.expect
@@ -1,7 +1,7 @@
 library test;
 
 class C {
-  static m({int a: 0}) {}
+  static m({int a = 0}) {}
 }
 
 main() {}
diff --git a/pkg/front_end/testcases/general/factory_patch/main.dart.weak.expect b/pkg/front_end/testcases/general/factory_patch/main.dart.weak.expect
index ec986d0ff95..920f7494ce2 100644
--- a/pkg/front_end/testcases/general/factory_patch/main.dart.weak.expect
+++ b/pkg/front_end/testcases/general/factory_patch/main.dart.weak.expect
@@ -12,10 +12,10 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/general/factory_patch/patch_lib.dart:22:52: Error: Can't have a default value here because any default values of 'Class._internal' would be used instead.
+// pkg/front_end/testcases/general/factory_patch/patch_lib.dart:22:53: Error: Can't have a default value here because any default values of 'Class._internal' would be used instead.
 // Try removing the default value.
-//   const factory Class.redirect({bool defaultValue: true}) = Class._internal;
-//                                                    ^
+//   const factory Class.redirect({bool defaultValue = true}) = Class._internal;
+//                                                     ^
 //
 import self as test;
 import "dart:_internal" as _in;
diff --git a/pkg/front_end/testcases/general/factory_patch/main.dart.weak.modular.expect b/pkg/front_end/testcases/general/factory_patch/main.dart.weak.modular.expect
index ec986d0ff95..920f7494ce2 100644
--- a/pkg/front_end/testcases/general/factory_patch/main.dart.weak.modular.expect
+++ b/pkg/front_end/testcases/general/factory_patch/main.dart.weak.modular.expect
@@ -12,10 +12,10 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/general/factory_patch/patch_lib.dart:22:52: Error: Can't have a default value here because any default values of 'Class._internal' would be used instead.
+// pkg/front_end/testcases/general/factory_patch/patch_lib.dart:22:53: Error: Can't have a default value here because any default values of 'Class._internal' would be used instead.
 // Try removing the default value.
-//   const factory Class.redirect({bool defaultValue: true}) = Class._internal;
-//                                                    ^
+//   const factory Class.redirect({bool defaultValue = true}) = Class._internal;
+//                                                     ^
 //
 import self as test;
 import "dart:_internal" as _in;
diff --git a/pkg/front_end/testcases/general/factory_patch/main.dart.weak.outline.expect b/pkg/front_end/testcases/general/factory_patch/main.dart.weak.outline.expect
index cc584f7ed89..13fa6815db8 100644
--- a/pkg/front_end/testcases/general/factory_patch/main.dart.weak.outline.expect
+++ b/pkg/front_end/testcases/general/factory_patch/main.dart.weak.outline.expect
@@ -32,7 +32,7 @@ class Class extends core::Object {
 
 Extra constant evaluation status:
 Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:6:49 -> InstanceConstant(const _Patch{})
-Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:8:27 -> InstanceConstant(const _Patch{})
+Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:8:26 -> InstanceConstant(const _Patch{})
 Evaluated: StaticGet @ (unknown position in org-dartlang-testcase:///origin_lib.dart) -> InstanceConstant(const _Patch{})
 Evaluated: StaticGet @ org-dartlang-testcase:///patch_lib.dart:22:17 -> InstanceConstant(const _Patch{})
 Evaluated: ConstructorTearOff @ org-dartlang-testcase:///origin_lib.dart:5:7 -> ConstructorTearOffConstant(Class.redirect)
diff --git a/pkg/front_end/testcases/general/factory_patch/main.dart.weak.transformed.expect b/pkg/front_end/testcases/general/factory_patch/main.dart.weak.transformed.expect
index ec986d0ff95..920f7494ce2 100644
--- a/pkg/front_end/testcases/general/factory_patch/main.dart.weak.transformed.expect
+++ b/pkg/front_end/testcases/general/factory_patch/main.dart.weak.transformed.expect
@@ -12,10 +12,10 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/general/factory_patch/patch_lib.dart:22:52: Error: Can't have a default value here because any default values of 'Class._internal' would be used instead.
+// pkg/front_end/testcases/general/factory_patch/patch_lib.dart:22:53: Error: Can't have a default value here because any default values of 'Class._internal' would be used instead.
 // Try removing the default value.
-//   const factory Class.redirect({bool defaultValue: true}) = Class._internal;
-//                                                    ^
+//   const factory Class.redirect({bool defaultValue = true}) = Class._internal;
+//                                                     ^
 //
 import self as test;
 import "dart:_internal" as _in;
diff --git a/pkg/front_end/testcases/general/factory_patch/origin_lib.dart b/pkg/front_end/testcases/general/factory_patch/origin_lib.dart
index 300b31ee21b..bbb2c9eef93 100644
--- a/pkg/front_end/testcases/general/factory_patch/origin_lib.dart
+++ b/pkg/front_end/testcases/general/factory_patch/origin_lib.dart
@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 class Class {
-  external factory Class.fact({bool defaultValue: true});
-  external const factory Class.constFact({bool defaultValue: true});
-  external const factory Class.redirect({bool defaultValue: true});
+  external factory Class.fact({bool defaultValue = true});
+  external const factory Class.constFact({bool defaultValue = true});
+  external const factory Class.redirect({bool defaultValue = true});
 }
diff --git a/pkg/front_end/testcases/general/factory_patch/patch_lib.dart b/pkg/front_end/testcases/general/factory_patch/patch_lib.dart
index e1fe3fd1c6c..9fdb070bfce 100644
--- a/pkg/front_end/testcases/general/factory_patch/patch_lib.dart
+++ b/pkg/front_end/testcases/general/factory_patch/patch_lib.dart
@@ -9,15 +9,15 @@ import 'dart:_internal';
 class Class {
   final bool defaultValue;
 
-  const Class._internal({this.defaultValue: false});
+  const Class._internal({this.defaultValue = false});
 
   @patch
-  factory Class.fact({bool defaultValue: true}) =>
+  factory Class.fact({bool defaultValue = true}) =>
       new Class._internal(defaultValue: defaultValue);
 
   @patch
-  factory Class.constFact({bool defaultValue: true}) => throw 'unsupported';
+  factory Class.constFact({bool defaultValue = true}) => throw 'unsupported';
 
   @patch
-  const factory Class.redirect({bool defaultValue: true}) = Class._internal;
+  const factory Class.redirect({bool defaultValue = true}) = Class._internal;
 }
diff --git a/pkg/front_end/testcases/general/functions.dart b/pkg/front_end/testcases/general/functions.dart
index c6d90d63274..aa7aaecd900 100644
--- a/pkg/front_end/testcases/general/functions.dart
+++ b/pkg/front_end/testcases/general/functions.dart
@@ -8,7 +8,7 @@ main() {
     f();
   }
 
-  local(({a: "Default greeting!"}) {
+  local(({a = "Default greeting!"}) {
     print(a);
   });
 }
diff --git a/pkg/front_end/testcases/general/issue43290.dart b/pkg/front_end/testcases/general/issue43290.dart
index c1af4bab9a0..692f2aa0355 100644
--- a/pkg/front_end/testcases/general/issue43290.dart
+++ b/pkg/front_end/testcases/general/issue43290.dart
@@ -5,7 +5,7 @@
 class Class {
   final int length;
 
-  const Class({this.length: 0});
+  const Class({this.length = 0});
 
   method1a() {
     const Class(length: this.length);
diff --git a/pkg/front_end/testcases/general/issue43290.dart.textual_outline.expect b/pkg/front_end/testcases/general/issue43290.dart.textual_outline.expect
index 14991b03022..f3797e82640 100644
--- a/pkg/front_end/testcases/general/issue43290.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/general/issue43290.dart.textual_outline.expect
@@ -1,6 +1,6 @@
 class Class {
   final int length;
-  const Class({this.length: 0});
+  const Class({this.length = 0});
   method1a() {}
   method1b() {}
   method2a() {}
diff --git a/pkg/front_end/testcases/general/issue43290.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/general/issue43290.dart.textual_outline_modelled.expect
index f80d7f18c98..3c3be744f54 100644
--- a/pkg/front_end/testcases/general/issue43290.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/general/issue43290.dart.textual_outline_modelled.expect
@@ -1,5 +1,5 @@
 class Class {
-  const Class({this.length: 0});
+  const Class({this.length = 0});
   final int length;
   method1a() {}
   method1b() {}
diff --git a/pkg/front_end/testcases/general/magic_const.dart b/pkg/front_end/testcases/general/magic_const.dart
index 276245e2ae4..dd85fe9293b 100644
--- a/pkg/front_end/testcases/general/magic_const.dart
+++ b/pkg/front_end/testcases/general/magic_const.dart
@@ -12,7 +12,7 @@ class Constant {
 
 class NotConstant {}
 
-foo({a: Constant(), b: Constant(), c: []}) {}
+foo({a = Constant(), b = Constant(), c = []}) {}
 
 test() {
   const NotConstant();
diff --git a/pkg/front_end/testcases/general/magic_const.dart.textual_outline.expect b/pkg/front_end/testcases/general/magic_const.dart.textual_outline.expect
index 63982d2bc5b..da909e74e5e 100644
--- a/pkg/front_end/testcases/general/magic_const.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/general/magic_const.dart.textual_outline.expect
@@ -4,6 +4,6 @@ class Constant {
 
 class NotConstant {}
 
-foo({a: Constant(), b: Constant(), c: []}) {}
+foo({a = Constant(), b = Constant(), c = []}) {}
 test() {}
 main() {}
diff --git a/pkg/front_end/testcases/general/magic_const.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/general/magic_const.dart.textual_outline_modelled.expect
index 98f38dfed67..df9f067d663 100644
--- a/pkg/front_end/testcases/general/magic_const.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/general/magic_const.dart.textual_outline_modelled.expect
@@ -4,6 +4,6 @@ class Constant {
 
 class NotConstant {}
 
-foo({a: Constant(), b: Constant(), c: []}) {}
+foo({a = Constant(), b = Constant(), c = []}) {}
 main() {}
 test() {}
diff --git a/pkg/front_end/testcases/general/magic_const.dart.weak.expect b/pkg/front_end/testcases/general/magic_const.dart.weak.expect
index bc204f0897d..fef9eea8bfb 100644
--- a/pkg/front_end/testcases/general/magic_const.dart.weak.expect
+++ b/pkg/front_end/testcases/general/magic_const.dart.weak.expect
@@ -2,29 +2,29 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/general/magic_const.dart:15:9: Error: Constant expression expected.
+// pkg/front_end/testcases/general/magic_const.dart:15:10: Error: Constant expression expected.
 // Try inserting 'const'.
-// foo({a: Constant(), b: Constant(), c: []}) {}
-//         ^^^^^^^^
+// foo({a = Constant(), b = Constant(), c = []}) {}
+//          ^^^^^^^^
 //
-// pkg/front_end/testcases/general/magic_const.dart:15:24: Error: Constant expression expected.
+// pkg/front_end/testcases/general/magic_const.dart:15:26: Error: Constant expression expected.
 // Try inserting 'const'.
-// foo({a: Constant(), b: Constant(), c: []}) {}
-//                        ^^^^^^^^
+// foo({a = Constant(), b = Constant(), c = []}) {}
+//                          ^^^^^^^^
 //
-// pkg/front_end/testcases/general/magic_const.dart:15:39: Error: Constant expression expected.
+// pkg/front_end/testcases/general/magic_const.dart:15:42: Error: Constant expression expected.
 // Try inserting 'const'.
-// foo({a: Constant(), b: Constant(), c: []}) {}
-//                                       ^
+// foo({a = Constant(), b = Constant(), c = []}) {}
+//                                          ^
 //
 // pkg/front_end/testcases/general/magic_const.dart:18:9: Error: Cannot invoke a non-'const' constructor where a const expression is expected.
 // Try using a constructor or factory that is 'const'.
 //   const NotConstant();
 //         ^^^^^^^^^^^
 //
-// pkg/front_end/testcases/general/magic_const.dart:15:39: Error: Non-constant list literal is not a constant expression.
-// foo({a: Constant(), b: Constant(), c: []}) {}
-//                                       ^
+// pkg/front_end/testcases/general/magic_const.dart:15:42: Error: Non-constant list literal is not a constant expression.
+// foo({a = Constant(), b = Constant(), c = []}) {}
+//                                          ^
 //
 import self as self;
 import "dart:core" as core;
diff --git a/pkg/front_end/testcases/general/magic_const.dart.weak.modular.expect b/pkg/front_end/testcases/general/magic_const.dart.weak.modular.expect
index bc204f0897d..fef9eea8bfb 100644
--- a/pkg/front_end/testcases/general/magic_const.dart.weak.modular.expect
+++ b/pkg/front_end/testcases/general/magic_const.dart.weak.modular.expect
@@ -2,29 +2,29 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/general/magic_const.dart:15:9: Error: Constant expression expected.
+// pkg/front_end/testcases/general/magic_const.dart:15:10: Error: Constant expression expected.
 // Try inserting 'const'.
-// foo({a: Constant(), b: Constant(), c: []}) {}
-//         ^^^^^^^^
+// foo({a = Constant(), b = Constant(), c = []}) {}
+//          ^^^^^^^^
 //
-// pkg/front_end/testcases/general/magic_const.dart:15:24: Error: Constant expression expected.
+// pkg/front_end/testcases/general/magic_const.dart:15:26: Error: Constant expression expected.
 // Try inserting 'const'.
-// foo({a: Constant(), b: Constant(), c: []}) {}
-//                        ^^^^^^^^
+// foo({a = Constant(), b = Constant(), c = []}) {}
+//                          ^^^^^^^^
 //
-// pkg/front_end/testcases/general/magic_const.dart:15:39: Error: Constant expression expected.
+// pkg/front_end/testcases/general/magic_const.dart:15:42: Error: Constant expression expected.
 // Try inserting 'const'.
-// foo({a: Constant(), b: Constant(), c: []}) {}
-//                                       ^
+// foo({a = Constant(), b = Constant(), c = []}) {}
+//                                          ^
 //
 // pkg/front_end/testcases/general/magic_const.dart:18:9: Error: Cannot invoke a non-'const' constructor where a const expression is expected.
 // Try using a constructor or factory that is 'const'.
 //   const NotConstant();
 //         ^^^^^^^^^^^
 //
-// pkg/front_end/testcases/general/magic_const.dart:15:39: Error: Non-constant list literal is not a constant expression.
-// foo({a: Constant(), b: Constant(), c: []}) {}
-//                                       ^
+// pkg/front_end/testcases/general/magic_const.dart:15:42: Error: Non-constant list literal is not a constant expression.
+// foo({a = Constant(), b = Constant(), c = []}) {}
+//                                          ^
 //
 import self as self;
 import "dart:core" as core;
diff --git a/pkg/front_end/testcases/general/magic_const.dart.weak.transformed.expect b/pkg/front_end/testcases/general/magic_const.dart.weak.transformed.expect
index 110e6fa501a..f9a66d6afee 100644
--- a/pkg/front_end/testcases/general/magic_const.dart.weak.transformed.expect
+++ b/pkg/front_end/testcases/general/magic_const.dart.weak.transformed.expect
@@ -2,29 +2,29 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/general/magic_const.dart:15:9: Error: Constant expression expected.
+// pkg/front_end/testcases/general/magic_const.dart:15:10: Error: Constant expression expected.
 // Try inserting 'const'.
-// foo({a: Constant(), b: Constant(), c: []}) {}
-//         ^^^^^^^^
+// foo({a = Constant(), b = Constant(), c = []}) {}
+//          ^^^^^^^^
 //
-// pkg/front_end/testcases/general/magic_const.dart:15:24: Error: Constant expression expected.
+// pkg/front_end/testcases/general/magic_const.dart:15:26: Error: Constant expression expected.
 // Try inserting 'const'.
-// foo({a: Constant(), b: Constant(), c: []}) {}
-//                        ^^^^^^^^
+// foo({a = Constant(), b = Constant(), c = []}) {}
+//                          ^^^^^^^^
 //
-// pkg/front_end/testcases/general/magic_const.dart:15:39: Error: Constant expression expected.
+// pkg/front_end/testcases/general/magic_const.dart:15:42: Error: Constant expression expected.
 // Try inserting 'const'.
-// foo({a: Constant(), b: Constant(), c: []}) {}
-//                                       ^
+// foo({a = Constant(), b = Constant(), c = []}) {}
+//                                          ^
 //
 // pkg/front_end/testcases/general/magic_const.dart:18:9: Error: Cannot invoke a non-'const' constructor where a const expression is expected.
 // Try using a constructor or factory that is 'const'.
 //   const NotConstant();
 //         ^^^^^^^^^^^
 //
-// pkg/front_end/testcases/general/magic_const.dart:15:39: Error: Non-constant list literal is not a constant expression.
-// foo({a: Constant(), b: Constant(), c: []}) {}
-//                                       ^
+// pkg/front_end/testcases/general/magic_const.dart:15:42: Error: Non-constant list literal is not a constant expression.
+// foo({a = Constant(), b = Constant(), c = []}) {}
+//                                          ^
 //
 import self as self;
 import "dart:core" as core;
diff --git a/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart b/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart
index 011cb343ea8..30bdcd8c23a 100644
--- a/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart
+++ b/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart
@@ -6,7 +6,7 @@ import "package:expect/expect.dart";
 
 class C<T> {
   String trace;
-  C({a: 0, b: T}) : trace = "a: $a, b: $b";
+  C({a = 0, b = T}) : trace = "a: $a, b: $b";
 }
 
 class M {}
diff --git a/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.textual_outline.expect b/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.textual_outline.expect
index d671b85f987..f18d3eecb31 100644
--- a/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.textual_outline.expect
@@ -2,7 +2,7 @@ import "package:expect/expect.dart";
 
 class C<T> {
   String trace;
-  C({a: 0, b: T}) : trace = "a: $a, b: $b";
+  C({a = 0, b = T}) : trace = "a: $a, b: $b";
 }
 
 class M {}
diff --git a/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.textual_outline_modelled.expect
index 452b24b40d1..b112e70e39b 100644
--- a/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.textual_outline_modelled.expect
@@ -1,7 +1,7 @@
 import "package:expect/expect.dart";
 
 class C<T> {
-  C({a: 0, b: T}) : trace = "a: $a, b: $b";
+  C({a = 0, b = T}) : trace = "a: $a, b: $b";
   String trace;
 }
 
diff --git a/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.expect b/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.expect
index beed00c4c44..01d3c4cb19c 100644
--- a/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.expect
+++ b/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.expect
@@ -2,9 +2,9 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart:9:15: Error: Type variables can't be used in static members.
-//   C({a: 0, b: T}) : trace = "a: $a, b: $b";
-//               ^
+// pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart:9:17: Error: Type variables can't be used in static members.
+//   C({a = 0, b = T}) : trace = "a: $a, b: $b";
+//                 ^
 //
 import self as self;
 import "dart:core" as core;
diff --git a/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.modular.expect b/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.modular.expect
index beed00c4c44..01d3c4cb19c 100644
--- a/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.modular.expect
+++ b/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.modular.expect
@@ -2,9 +2,9 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart:9:15: Error: Type variables can't be used in static members.
-//   C({a: 0, b: T}) : trace = "a: $a, b: $b";
-//               ^
+// pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart:9:17: Error: Type variables can't be used in static members.
+//   C({a = 0, b = T}) : trace = "a: $a, b: $b";
+//                 ^
 //
 import self as self;
 import "dart:core" as core;
diff --git a/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.outline.expect b/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.outline.expect
index d5065f7be56..e7cebb0b238 100644
--- a/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.outline.expect
+++ b/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.outline.expect
@@ -2,9 +2,9 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart:9:15: Error: Type variables can't be used in static members.
-//   C({a: 0, b: T}) : trace = "a: $a, b: $b";
-//               ^
+// pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart:9:17: Error: Type variables can't be used in static members.
+//   C({a = 0, b = T}) : trace = "a: $a, b: $b";
+//                 ^
 //
 import self as self;
 import "dart:core" as core;
@@ -43,7 +43,7 @@ static method main() → dynamic
 
 
 Extra constant evaluation status:
-Evaluated: TypeLiteral @ org-dartlang-testcase:///mixin_constructors_with_default_values.dart:9:15 -> TypeLiteralConstant(<invalid>)
+Evaluated: TypeLiteral @ org-dartlang-testcase:///mixin_constructors_with_default_values.dart:9:17 -> TypeLiteralConstant(<invalid>)
 Evaluated: TypeLiteral @ org-dartlang-testcase:///mixin_constructors_with_default_values.dart:14:7 -> TypeLiteralConstant(<invalid>)
 Evaluated: TypeLiteral @ org-dartlang-testcase:///mixin_constructors_with_default_values.dart:18:7 -> TypeLiteralConstant(<invalid>)
 Extra constant evaluation: evaluated: 7, effectively constant: 3
diff --git a/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.transformed.expect b/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.transformed.expect
index 98df2eba01b..fc9b3202763 100644
--- a/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.transformed.expect
+++ b/pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart.weak.transformed.expect
@@ -2,9 +2,9 @@ library /*isNonNullableByDefault*/;
 //
 // Problems in library:
 //
-// pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart:9:15: Error: Type variables can't be used in static members.
-//   C({a: 0, b: T}) : trace = "a: $a, b: $b";
-//               ^
+// pkg/front_end/testcases/general/mixin_constructors_with_default_values.dart:9:17: Error: Type variables can't be used in static members.
+//   C({a = 0, b = T}) : trace = "a: $a, b: $b";
+//                 ^
 //
 import self as self;
 import "dart:core" as core;
diff --git a/pkg/front_end/testcases/general/tear_off_patch/main.dart.weak.outline.expect b/pkg/front_end/testcases/general/tear_off_patch/main.dart.weak.outline.expect
index 40d29d32f89..4597e4b3499 100644
--- a/pkg/front_end/testcases/general/tear_off_patch/main.dart.weak.outline.expect
+++ b/pkg/front_end/testcases/general/tear_off_patch/main.dart.weak.outline.expect
@@ -54,12 +54,12 @@ static method _#AliasImpl#patched#tearOff<T extends core::num>({has-declared-ini
 
 Extra constant evaluation status:
 Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:6:46 -> InstanceConstant(const _Patch{})
-Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:7:9 -> InstanceConstant(const _Patch{})
-Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:8:28 -> InstanceConstant(const _Patch{})
+Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:7:8 -> InstanceConstant(const _Patch{})
+Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:8:27 -> InstanceConstant(const _Patch{})
 Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:12:21 -> InstanceConstant(const _Patch{})
-Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:15:11 -> InstanceConstant(const _Patch{})
+Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:15:10 -> InstanceConstant(const _Patch{})
 Evaluated: ConstructorTearOff @ org-dartlang-testcase:///origin_lib.dart:5:7 -> ConstructorTearOffConstant(Class.redirect)
 Evaluated: ConstructorTearOff @ org-dartlang-testcase:///origin_lib.dart:5:7 -> ConstructorTearOffConstant(Class.redirect2)
-Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:18:38 -> InstanceConstant(const _Patch{})
-Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:19:47 -> InstanceConstant(const _Patch{})
+Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:18:36 -> InstanceConstant(const _Patch{})
+Evaluated: StaticGet @ org-dartlang-testcase:///origin_lib.dart:19:45 -> InstanceConstant(const _Patch{})
 Extra constant evaluation: evaluated: 34, effectively constant: 9
diff --git a/pkg/front_end/testcases/general/tear_off_patch/origin_lib.dart b/pkg/front_end/testcases/general/tear_off_patch/origin_lib.dart
index c29cf6f2e64..830d39b0e5f 100644
--- a/pkg/front_end/testcases/general/tear_off_patch/origin_lib.dart
+++ b/pkg/front_end/testcases/general/tear_off_patch/origin_lib.dart
@@ -3,16 +3,16 @@
 // BSD-style license that can be found in the LICENSE file.
 
 class Class<T> {
-  external Class({bool defaultValue: true, required T value});
-  external factory Class.fact({bool defaultValue: true, required T value});
+  external Class({bool defaultValue = true, required T value});
+  external factory Class.fact({bool defaultValue = true, required T value});
   external factory Class.redirect({bool defaultValue, required T value});
   external factory Class.redirect2({bool defaultValue, required T value});
 }
 
 class ClassImpl<T> implements Class<T> {
-  ClassImpl({bool defaultValue: true, required T value});
+  ClassImpl({bool defaultValue = true, required T value});
 
-  external ClassImpl.patched({bool defaultValue: true, required T value});
+  external ClassImpl.patched({bool defaultValue = true, required T value});
 }
 
 typedef Alias<T extends num> = Class<T>;
diff --git a/pkg/front_end/testcases/general/tear_off_patch/patch_lib.dart b/pkg/front_end/testcases/general/tear_off_patch/patch_lib.dart
index 7265272d445..03482e1c8a5 100644
--- a/pkg/front_end/testcases/general/tear_off_patch/patch_lib.dart
+++ b/pkg/front_end/testcases/general/tear_off_patch/patch_lib.dart
@@ -8,12 +8,12 @@ import 'dart:_internal';
 @patch
 class Class<T> {
   @patch
-  Class({bool defaultValue: true, required T value}) {
+  Class({bool defaultValue = true, required T value}) {
     print('patch Class');
   }
 
   @patch
-  factory Class.fact({bool defaultValue: true, required T value}) =>
+  factory Class.fact({bool defaultValue = true, required T value}) =>
       new ClassImpl<T>(defaultValue: defaultValue, value: value);
 
   @patch
@@ -27,7 +27,7 @@ class Class<T> {
 @patch
 class ClassImpl<T> implements Class<T> {
   @patch
-  ClassImpl.patched({bool defaultValue: true, required T value}) {
+  ClassImpl.patched({bool defaultValue = true, required T value}) {
     print('patch ClassImpl');
   }
 }
diff --git a/pkg/front_end/testcases/inference/parameter_defaults_downwards.dart b/pkg/front_end/testcases/inference/parameter_defaults_downwards.dart
index 4d2f8c2f645..7374dd88889 100644
--- a/pkg/front_end/testcases/inference/parameter_defaults_downwards.dart
+++ b/pkg/front_end/testcases/inference/parameter_defaults_downwards.dart
@@ -7,13 +7,13 @@ library test;
 
 void optional_toplevel([List<int> x = /*@typeArgs=int*/ const []]) {}
 
-void named_toplevel({List<int> x: /*@typeArgs=int*/ const []}) {}
+void named_toplevel({List<int> x = /*@typeArgs=int*/ const []}) {}
 
 main() {
   void optional_local([List<int> x = /*@typeArgs=int*/ const []]) {}
-  void named_local({List<int> x: /*@typeArgs=int*/ const []}) {}
-  var /*@type=([List<int>]) -> Null*/ optional_closure = /*@ returnType=Null */ (
-      [List<int> x = /*@typeArgs=int*/ const []]) {};
-  var /*@type=({x: List<int>}) -> Null*/ name_closure = /*@ returnType=Null */ (
-      {List<int> x: /*@typeArgs=int*/ const []}) {};
+  void named_local({List<int> x = /*@typeArgs=int*/ const []}) {}
+  var /*@type=([List<int>]) -> Null*/ optional_closure = /*@ returnType=Null */
+      ([List<int> x = /*@typeArgs=int*/ const []]) {};
+  var /*@type=({x: List<int>}) -> Null*/ name_closure = /*@ returnType=Null */
+      ({List<int> x = /*@typeArgs=int*/ const []}) {};
 }
diff --git a/pkg/front_end/testcases/inference/parameter_defaults_downwards.dart.textual_outline.expect b/pkg/front_end/testcases/inference/parameter_defaults_downwards.dart.textual_outline.expect
index 0f15872d29f..428d8e23dfb 100644
--- a/pkg/front_end/testcases/inference/parameter_defaults_downwards.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/inference/parameter_defaults_downwards.dart.textual_outline.expect
@@ -1,5 +1,5 @@
 library test;
 
 void optional_toplevel([List<int> x = const []]) {}
-void named_toplevel({List<int> x: const []}) {}
+void named_toplevel({List<int> x = const []}) {}
 main() {}
diff --git a/pkg/front_end/testcases/inference/parameter_defaults_downwards.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/inference/parameter_defaults_downwards.dart.textual_outline_modelled.expect
index 88548f36539..df5b036f46d 100644
--- a/pkg/front_end/testcases/inference/parameter_defaults_downwards.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/inference/parameter_defaults_downwards.dart.textual_outline_modelled.expect
@@ -1,5 +1,5 @@
 library test;
 
 main() {}
-void named_toplevel({List<int> x: const []}) {}
+void named_toplevel({List<int> x = const []}) {}
 void optional_toplevel([List<int> x = const []]) {}
diff --git a/pkg/front_end/testcases/inference/parameter_defaults_upwards.dart b/pkg/front_end/testcases/inference/parameter_defaults_upwards.dart
index ee24659bc09..3d49dda0760 100644
--- a/pkg/front_end/testcases/inference/parameter_defaults_upwards.dart
+++ b/pkg/front_end/testcases/inference/parameter_defaults_upwards.dart
@@ -12,11 +12,11 @@ class C<T> {
 
 void optional_toplevel([x = /*@typeArgs=int*/ const [0]]) {}
 
-void named_toplevel({x: /*@typeArgs=int*/ const [0]}) {}
+void named_toplevel({x = /*@typeArgs=int*/ const [0]}) {}
 
 main() {
   void optional_local([/*@ type=dynamic */ x = /*@typeArgs=int*/ const [0]]) {}
-  void named_local({/*@ type=dynamic */ x: /*@typeArgs=int*/ const [0]}) {}
+  void named_local({/*@ type=dynamic */ x = /*@typeArgs=int*/ const [0]}) {}
   var /*@type=C<dynamic>*/ c_optional_toplevel =
       new /*@ typeArgs=dynamic */ C.optional(optional_toplevel);
   var /*@type=C<dynamic>*/ c_named_toplevel =
@@ -30,5 +30,5 @@ main() {
           [/*@type=Object?*/ x = /*@typeArgs=int*/ const [0]]) {});
   var /*@type=C<Object?>*/ c_named_closure = new /*@typeArgs=Object?*/ C.named(
       /*@returnType=void*/ (
-          {/*@type=Object?*/ x: /*@typeArgs=int*/ const [0]}) {});
+          {/*@type=Object?*/ x = /*@typeArgs=int*/ const [0]}) {});
 }
diff --git a/pkg/front_end/testcases/inference/parameter_defaults_upwards.dart.textual_outline.expect b/pkg/front_end/testcases/inference/parameter_defaults_upwards.dart.textual_outline.expect
index 99ee48de8f1..873ca01206d 100644
--- a/pkg/front_end/testcases/inference/parameter_defaults_upwards.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/inference/parameter_defaults_upwards.dart.textual_outline.expect
@@ -6,5 +6,5 @@ class C<T> {
 }
 
 void optional_toplevel([x = const [0]]) {}
-void named_toplevel({x: const [0]}) {}
+void named_toplevel({x = const [0]}) {}
 main() {}
diff --git a/pkg/front_end/testcases/inference/parameter_defaults_upwards.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/inference/parameter_defaults_upwards.dart.textual_outline_modelled.expect
index b07f840f1ae..34fe48bde16 100644
--- a/pkg/front_end/testcases/inference/parameter_defaults_upwards.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/inference/parameter_defaults_upwards.dart.textual_outline_modelled.expect
@@ -6,5 +6,5 @@ class C<T> {
 }
 
 main() {}
-void named_toplevel({x: const [0]}) {}
+void named_toplevel({x = const [0]}) {}
 void optional_toplevel([x = const [0]]) {}
diff --git a/pkg/front_end/testcases/nnbd/nullable_param.dart b/pkg/front_end/testcases/nnbd/nullable_param.dart
index ba646b877e2..e82a767fef9 100644
--- a/pkg/front_end/testcases/nnbd/nullable_param.dart
+++ b/pkg/front_end/testcases/nnbd/nullable_param.dart
@@ -15,6 +15,6 @@ main() {
   test_nullable_function_type_formal_param(f: () => 2);
 }
 
-int test_nullable_function_type_formal_param({int f()?: null}) {
+int test_nullable_function_type_formal_param({int f()? = null}) {
   return f?.call() ?? -1;
 }
diff --git a/pkg/front_end/testcases/nnbd/nullable_param.dart.textual_outline.expect b/pkg/front_end/testcases/nnbd/nullable_param.dart.textual_outline.expect
index 3d0a4271849..2ead80d75dc 100644
--- a/pkg/front_end/testcases/nnbd/nullable_param.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/nnbd/nullable_param.dart.textual_outline.expect
@@ -4,4 +4,4 @@ class Foo {
 }
 
 main() {}
-int test_nullable_function_type_formal_param({int f()?: null}) {}
+int test_nullable_function_type_formal_param({int f()? = null}) {}
diff --git a/pkg/front_end/testcases/nnbd/nullable_param.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/nnbd/nullable_param.dart.textual_outline_modelled.expect
index 307c9d6d2e8..2b0eb79929d 100644
--- a/pkg/front_end/testcases/nnbd/nullable_param.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/nnbd/nullable_param.dart.textual_outline_modelled.expect
@@ -3,5 +3,5 @@ class Foo {
   int? field;
 }
 
-int test_nullable_function_type_formal_param({int f()?: null}) {}
+int test_nullable_function_type_formal_param({int f()? = null}) {}
 main() {}
diff --git a/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in.dart b/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in.dart
index 9db578aaa23..439dc771b77 100644
--- a/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in.dart
+++ b/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in.dart
@@ -19,9 +19,9 @@ class LegacyClass extends Class implements Interface {
 
   int method6c([int a, int b]) => 0;
 
-  int method8a(int a, {int b: 0}) => 0;
+  int method8a(int a, {int b = 0}) => 0;
 
-  int method8b({int a, int b: 0}) => 0;
+  int method8b({int a, int b = 0}) => 0;
 
   int method10a(int a, {int b}) => 0;
 
diff --git a/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in.dart.textual_outline.expect b/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in.dart.textual_outline.expect
index af85f0d3e4c..c9c3131b43b 100644
--- a/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in.dart.textual_outline.expect
@@ -7,8 +7,8 @@ class LegacyClass extends Class implements Interface {
   int method6a(int a, int b) => 0;
   int method6b(int a, [int b]) => 0;
   int method6c([int a, int b]) => 0;
-  int method8a(int a, {int b: 0}) => 0;
-  int method8b({int a, int b: 0}) => 0;
+  int method8a(int a, {int b = 0}) => 0;
+  int method8b({int a, int b = 0}) => 0;
   int method10a(int a, {int b}) => 0;
   int method10b({int a, int b}) => 0;
   int get getter3 => 0;
diff --git a/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in.dart.textual_outline_modelled.expect
index 0cad16e4979..50ef10f4540 100644
--- a/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in.dart.textual_outline_modelled.expect
@@ -15,8 +15,8 @@ class LegacyClass extends Class implements Interface {
   int method6a(int a, int b) => 0;
   int method6b(int a, [int b]) => 0;
   int method6c([int a, int b]) => 0;
-  int method8a(int a, {int b: 0}) => 0;
-  int method8b({int a, int b: 0}) => 0;
+  int method8a(int a, {int b = 0}) => 0;
+  int method8b({int a, int b = 0}) => 0;
   int property7;
   int property8;
   void set property3(int value) {}
diff --git a/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in_lib.dart b/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in_lib.dart
index 596f43a5c18..85bcd410322 100644
--- a/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in_lib.dart
+++ b/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_in_lib.dart
@@ -25,11 +25,11 @@ abstract class Interface {
 
   int method7a(int a, {int? b});
 
-  int method7b({int a: 0, int? b});
+  int method7b({int a = 0, int? b});
 
-  int? method8a(int? a, {int b: 0});
+  int? method8a(int? a, {int b = 0});
 
-  int? method8b({int? a, int b: 0});
+  int? method8b({int? a, int b = 0});
 
   int method9a(int a, {required int? b});
 
diff --git a/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_out.dart b/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_out.dart
index 028e0499366..bb2481e5a1b 100644
--- a/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_out.dart
+++ b/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_out.dart
@@ -23,9 +23,9 @@ abstract class Interface {
 
   int? method4c([int? a, int? b]);
 
-  int method5a(int a, {int b: 0});
+  int method5a(int a, {int b = 0});
 
-  int method5b({int a: 0, int b: 0});
+  int method5b({int a = 0, int b = 0});
 
   int method5c({required int a, required int b});
 
@@ -89,9 +89,9 @@ class Class2b extends LegacyClass implements Interface {
 
   int? method4c([int? a, int? b]) => 0;
 
-  int method5a(int a, {int b: 0}) => 0;
+  int method5a(int a, {int b = 0}) => 0;
 
-  int method5b({int a: 0, int b: 0}) => 0;
+  int method5b({int a = 0, int b = 0}) => 0;
 
   int method5c({required int a, required int b}) => 0;
 
diff --git a/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_out.dart.textual_outline.expect b/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_out.dart.textual_outline.expect
index b7107c117fa..eebcfaa9775 100644
--- a/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_out.dart.textual_outline.expect
+++ b/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_out.dart.textual_outline.expect
@@ -11,8 +11,8 @@ abstract class Interface {
   int? method4a(int? a, int? b);
   int? method4b(int? a, [int? b]);
   int? method4c([int? a, int? b]);
-  int method5a(int a, {int b: 0});
-  int method5b({int a: 0, int b: 0});
+  int method5a(int a, {int b = 0});
+  int method5b({int a = 0, int b = 0});
   int method5c({required int a, required int b});
   int? method6a(int? a, {int? b});
   int? method6b({int? a, int? b});
@@ -48,8 +48,8 @@ class Class2b extends LegacyClass implements Interface {
   int? method4a(int? a, int? b) => 0;
   int? method4b(int? a, [int? b]) => 0;
   int? method4c([int? a, int? b]) => 0;
-  int method5a(int a, {int b: 0}) => 0;
-  int method5b({int a: 0, int b: 0}) => 0;
+  int method5a(int a, {int b = 0}) => 0;
+  int method5b({int a = 0, int b = 0}) => 0;
   int method5c({required int a, required int b}) => 0;
   int? method6a(int? a, {int? b}) => 0;
   int? method6b({int? a, int? b}) => 0;
diff --git a/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_out.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_out.dart.textual_outline_modelled.expect
index 42c9fb713f1..fdd87b4482a 100644
--- a/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_out.dart.textual_outline_modelled.expect
+++ b/pkg/front_end/testcases/nnbd_mixed/member_inheritance_from_opt_out.dart.textual_outline_modelled.expect
@@ -23,8 +23,8 @@ abstract class Interface {
   int method3a(int a, int b);
   int method3b(int a, [int b]);
   int method3c([int a, int b]);
-  int method5a(int a, {int b: 0});
-  int method5b({int a: 0, int b: 0});
+  int method5a(int a, {int b = 0});
+  int method5b({int a = 0, int b = 0});
   int method5c({required int a, required int b});
   int property3 = 0;
   void set field3(int value);
@@ -60,8 +60,8 @@ class Class2b extends LegacyClass implements Interface {
   int method3a(int a, int b) => 0;
   int method3b(int a, [int b = 42]) => 0;
   int method3c([int a = 42, int b = 42]) => 0;
-  int method5a(int a, {int b: 0}) => 0;
-  int method5b({int a: 0, int b: 0}) => 0;
+  int method5a(int a, {int b = 0}) => 0;
+  int method5b({int a = 0, int b = 0}) => 0;
   int method5c({required int a, required int b}) => 0;
   int property3 = 0;
   void set field3(int value) {}
diff --git a/pkg/front_end/tool/_fasta/entry_points.dart b/pkg/front_end/tool/_fasta/entry_points.dart
index 05a3d5d4fca..d236ebb40c3 100644
--- a/pkg/front_end/tool/_fasta/entry_points.dart
+++ b/pkg/front_end/tool/_fasta/entry_points.dart
@@ -359,8 +359,8 @@ class CompileTask {
 
   Future<KernelTarget> buildOutline(
       {Uri? output,
-      bool omitPlatform: false,
-      bool supportAdditionalDills: true,
+      bool omitPlatform = false,
+      bool supportAdditionalDills = true,
       Benchmarker? benchmarker}) async {
     KernelTarget kernelTarget =
         await _createKernelTarget(benchmarker: benchmarker);
@@ -382,8 +382,8 @@ class CompileTask {
 
   Future<BuildResult> _buildOutline(KernelTarget kernelTarget,
       {Uri? output,
-      bool omitPlatform: false,
-      bool supportAdditionalDills: true}) async {
+      bool omitPlatform = false,
+      bool supportAdditionalDills = true}) async {
     DillTarget dillTarget = kernelTarget.dillTarget;
     Benchmarker? benchmarker = dillTarget.benchmarker;
 
@@ -443,8 +443,8 @@ class CompileTask {
   }
 
   Future<Uri> compile(
-      {bool omitPlatform: false,
-      bool supportAdditionalDills: true,
+      {bool omitPlatform = false,
+      bool supportAdditionalDills = true,
       Benchmarker? benchmarker}) async {
     c.options.reportNullSafetyCompilationModeInfo();
     KernelTarget kernelTarget =
diff --git a/pkg/front_end/tool/ast_model.dart b/pkg/front_end/tool/ast_model.dart
index 005b7fa4179..016820677df 100644
--- a/pkg/front_end/tool/ast_model.dart
+++ b/pkg/front_end/tool/ast_model.dart
@@ -508,7 +508,7 @@ class AstModel {
 /// the package config file.
 ///
 /// If [printDump] is `true`, a dump of the model printed to stdout.
-Future<AstModel> deriveAstModel(Uri repoDir, {bool printDump: false}) async {
+Future<AstModel> deriveAstModel(Uri repoDir, {bool printDump = false}) async {
   bool errorsFound = false;
   CompilerOptions options = new CompilerOptions();
   options.sdkRoot = computePlatformBinariesLocation(forceBuildDir: true);
diff --git a/pkg/front_end/tool/dart_doctest_impl.dart b/pkg/front_end/tool/dart_doctest_impl.dart
index 544345dc486..da7a719f454 100644
--- a/pkg/front_end/tool/dart_doctest_impl.dart
+++ b/pkg/front_end/tool/dart_doctest_impl.dart
@@ -82,7 +82,7 @@ class DartDocTest {
   final FileSystem? underlyingFileSystem;
   final bool silent;
 
-  DartDocTest({this.underlyingFileSystem, this.silent: false});
+  DartDocTest({this.underlyingFileSystem, this.silent = false});
 
   FileSystem _getFileSystem() =>
       underlyingFileSystem ?? StandardFileSystem.instance;
@@ -119,7 +119,7 @@ class DartDocTest {
   }
 
   Future<List<TestResult>> compileAndRun(Uri uri, List<Test> tests,
-      {bool silent: false}) async {
+      {bool silent = false}) async {
     errors = false;
     errorStrings.clear();
 
@@ -919,7 +919,7 @@ class DocTestSourceLoader extends SourceLoader {
       SourceLibraryBuilder? origin,
       kernel.Library? referencesFrom,
       bool? referenceIsPartOwner,
-      bool isAugmentation: false}) {
+      bool isAugmentation = false}) {
     if (importUri == DocTestIncrementalCompiler.dartDocTestUri) {
       HybridFileSystem hfs = target.fileSystem as HybridFileSystem;
       MemoryFileSystem fs = hfs.memory;
diff --git a/pkg/front_end/tool/fasta_perf.dart b/pkg/front_end/tool/fasta_perf.dart
index ba61cb1ec69..2b0c14472c6 100644
--- a/pkg/front_end/tool/fasta_perf.dart
+++ b/pkg/front_end/tool/fasta_perf.dart
@@ -221,7 +221,7 @@ class _PartialAstBuilder extends AstBuilder {
 
 // Invoke the fasta kernel generator for the program starting in [entryUri]
 Future<CompilerResult> generateKernel(Uri entryUri,
-    {bool compileSdk: true}) async {
+    {bool compileSdk = true}) async {
   // TODO(sigmund): this is here only to compute the input size,
   // we should extract the input size from the frontend instead.
   scanReachableFiles(entryUri);
diff --git a/pkg/front_end/tool/generate_ast_equivalence.dart b/pkg/front_end/tool/generate_ast_equivalence.dart
index 5697a4a0185..502235349eb 100644
--- a/pkg/front_end/tool/generate_ast_equivalence.dart
+++ b/pkg/front_end/tool/generate_ast_equivalence.dart
@@ -440,7 +440,7 @@ class $visitorName$visitorTypeParameters
   final $strategyName strategy;
 
   $visitorName({
-      this.strategy: const $strategyName()});
+      this.strategy = const $strategyName()});
 ''');
   }
 
@@ -523,8 +523,8 @@ class $visitorName$visitorTypeParameters
     return result;
   }
 
-  /// Returns `true` if [a] and [b] are equivalent, either by existing 
-  /// assumption or as defined by their corresponding canonical names. 
+  /// Returns `true` if [a] and [b] are equivalent, either by existing
+  /// assumption or as defined by their corresponding canonical names.
   /// Inequivalence is _not_ registered.
   bool $matchNamedNodes(NamedNode? a, NamedNode? b) {
     return identical(a, b) ||
@@ -549,7 +549,7 @@ class $visitorName$visitorTypeParameters
   }
 
   /// Returns `true` if [a] and [b] are equivalent, either by existing
-  /// assumption or as defined by their corresponding canonical names. 
+  /// assumption or as defined by their corresponding canonical names.
   /// Inequivalence is _not_ registered.
   bool $matchReferences(Reference? a, Reference? b) {
     return identical(a, b) ||
@@ -871,7 +871,7 @@ class $visitorName$visitorTypeParameters
   ///
   /// If [f] returns `false`, the returned result is marked as having
   /// inequivalences even when non have being registered.
-  EquivalenceResult inSubState(bool Function() f, {bool isAsserting: false}) {
+  EquivalenceResult inSubState(bool Function() f, {bool isAsserting = false}) {
     CheckingState _oldState = $checkingState;
     $checkingState = $checkingState.createSubState(isAsserting: isAsserting);
     bool hasInequivalences = f();
@@ -944,7 +944,7 @@ class $visitorName$visitorTypeParameters
 EquivalenceResult checkEquivalence(
     Node a,
     Node b,
-    {$strategyName strategy: const $strategyName()}) {
+    {$strategyName strategy = const $strategyName()}) {
   EquivalenceVisitor visitor = new EquivalenceVisitor(
       strategy: strategy);
   visitor.$checkNodes(a, b, 'root');
diff --git a/pkg/front_end/tool/parser_direct_ast/viewer.dart b/pkg/front_end/tool/parser_direct_ast/viewer.dart
index 8650f0f48e6..627cac1b249 100644
--- a/pkg/front_end/tool/parser_direct_ast/viewer.dart
+++ b/pkg/front_end/tool/parser_direct_ast/viewer.dart
@@ -58,7 +58,7 @@ class AstWidget extends Widget {
   }
 
   String textualize(ParserAstNode element,
-      {bool indent: false, bool withEndHeader: false}) {
+      {bool indent = false, bool withEndHeader = false}) {
     String header;
     switch (element.type) {
       case ParserAstType.BEGIN:
diff --git a/pkg/front_end/tool/perf_common.dart b/pkg/front_end/tool/perf_common.dart
index f258aec3af0..9f7f189a0a1 100644
--- a/pkg/front_end/tool/perf_common.dart
+++ b/pkg/front_end/tool/perf_common.dart
@@ -69,7 +69,7 @@ DiagnosticMessageHandler onDiagnosticMessageHandler() {
 // TODO(sigmund): delete as soon as the disableTypeInference flag and the
 // legacyMode flag get merged, and we have a single way of specifying the
 // legacy-mode flag to the FE.
-Target createTarget({bool isFlutter: false}) {
+Target createTarget({bool isFlutter = false}) {
   TargetFlags flags = new TargetFlags();
   if (isFlutter) {
     return new FlutterTarget(flags);
diff --git a/pkg/front_end/tool/smoke_test_quick.dart b/pkg/front_end/tool/smoke_test_quick.dart
index 12b77c31687..0c79ca61c63 100644
--- a/pkg/front_end/tool/smoke_test_quick.dart
+++ b/pkg/front_end/tool/smoke_test_quick.dart
@@ -35,7 +35,7 @@ Future<void> main(List<String> args) async {
 }
 
 Future<void> run(String script, List<String> scriptArguments,
-    {bool filter: true}) async {
+    {bool filter = true}) async {
   List<String> arguments = [];
   arguments.add("$script");
   arguments.addAll(scriptArguments);
diff --git a/pkg/front_end/tool/stat_on_dash_v.dart b/pkg/front_end/tool/stat_on_dash_v.dart
index 0e28d298893..18c8e824318 100644
--- a/pkg/front_end/tool/stat_on_dash_v.dart
+++ b/pkg/front_end/tool/stat_on_dash_v.dart
@@ -122,7 +122,7 @@ void main(List<String> args) {
 }
 
 /// Returns ms or µs or throws if ms not found.
-int findMs(String s, {bool inMs: true}) {
+int findMs(String s, {bool inMs = true}) {
   // Find " in " followed by numbers possibly followed by (a dot and more
   // numbers) followed by "ms"; e.g. " in 42.3ms"
 
diff --git a/pkg/front_end/tool/visitor_generator.dart b/pkg/front_end/tool/visitor_generator.dart
index 02f6d92fd53..bd2f840a2ac 100644
--- a/pkg/front_end/tool/visitor_generator.dart
+++ b/pkg/front_end/tool/visitor_generator.dart
@@ -12,7 +12,7 @@ import 'ast_model.dart';
 /// the Dart formatter. Use this during development to support incomplete
 /// generation.
 String generateVisitor(AstModel astModel, VisitorStrategy strategy,
-    {bool format: true}) {
+    {bool format = true}) {
   StringBuffer sb = new StringBuffer();
   strategy.generateHeader(astModel, sb);
 
diff --git a/pkg/frontend_server/lib/compute_kernel.dart b/pkg/frontend_server/lib/compute_kernel.dart
index 918c891827e..4f76a2071ac 100644
--- a/pkg/frontend_server/lib/compute_kernel.dart
+++ b/pkg/frontend_server/lib/compute_kernel.dart
@@ -131,7 +131,7 @@ class ComputeKernelResult {
 ///
 /// Returns whether or not the summary was successfully output.
 Future<ComputeKernelResult> computeKernel(List<String> args,
-    {bool isWorker: false,
+    {bool isWorker = false,
     StringBuffer? outputBuffer,
     Map<Uri, List<int>>? inputDigests,
     fe.InitializedCompilerState? previousState}) async {
diff --git a/pkg/frontend_server/lib/frontend_server.dart b/pkg/frontend_server/lib/frontend_server.dart
index d56115163c5..82b61c64127 100644
--- a/pkg/frontend_server/lib/frontend_server.dart
+++ b/pkg/frontend_server/lib/frontend_server.dart
@@ -361,10 +361,10 @@ class FrontendCompiler implements CompilerInterface {
       {this.printerFactory,
       this.transformer,
       this.unsafePackageSerialization,
-      this.incrementalSerialization: true,
-      this.useDebuggerModuleNames: false,
-      this.emitDebugMetadata: false,
-      this.emitDebugSymbols: false}) {
+      this.incrementalSerialization = true,
+      this.useDebuggerModuleNames = false,
+      this.emitDebugMetadata = false,
+      this.emitDebugSymbols = false}) {
     _outputStream ??= stdout;
     printerFactory ??= new BinaryPrinterFactory();
   }
@@ -731,7 +731,7 @@ class FrontendCompiler implements CompilerInterface {
   }
 
   writeDillFile(KernelCompilationResults results, String filename,
-      {bool filterExternal: false,
+      {bool filterExternal = false,
       IncrementalSerializer incrementalSerializer}) async {
     final Component component = results.component;
     final IOSink sink = File(filename).openWrite();
diff --git a/pkg/frontend_server/test/frontend_server_flutter.dart b/pkg/frontend_server/test/frontend_server_flutter.dart
index 3423d1615f5..160b1fdcd51 100644
--- a/pkg/frontend_server/test/frontend_server_flutter.dart
+++ b/pkg/frontend_server/test/frontend_server_flutter.dart
@@ -48,7 +48,7 @@ Future<NnbdMode> _getNNBDMode(Uri script, Uri packageConfigUri) async {
 }
 
 Future compileTests(String flutterDir, String flutterPlatformDir, Logger logger,
-    {String filter, int shards: 1, int shard: 0}) async {
+    {String filter, int shards = 1, int shard = 0}) async {
   if (flutterDir == null || !(new Directory(flutterDir).existsSync())) {
     throw "Didn't get a valid flutter directory to work with.";
   }
diff --git a/pkg/frontend_server/test/frontend_server_test.dart b/pkg/frontend_server/test/frontend_server_test.dart
index 06e04e13d56..d60a8ec049f 100644
--- a/pkg/frontend_server/test/frontend_server_test.dart
+++ b/pkg/frontend_server/test/frontend_server_test.dart
@@ -3050,8 +3050,8 @@ class Result {
 
 class _MockedBinaryPrinter extends Mock implements BinaryPrinter {}
 
-class _MockedBinaryPrinterFactory extends Mock implements BinaryPrinterFactory {
-}
+class _MockedBinaryPrinterFactory extends Mock
+    implements BinaryPrinterFactory {}
 
 class _MockedCompiler extends Mock implements CompilerInterface {}
 
@@ -3161,7 +3161,7 @@ class FrontendServer {
   /// frontend server.
   // TODO(johnniwinther): Use (required) named arguments.
   void recompile(Uri invalidatedUri,
-      {String boundaryKey: 'abc',
+      {String boundaryKey = 'abc',
       List<Uri> invalidatedUris,
       String entryPoint}) {
     invalidatedUris ??= [if (invalidatedUri != null) invalidatedUri];
@@ -3186,7 +3186,7 @@ class FrontendServer {
   /// frontend server.
   // TODO(johnniwinther): Use (required) named arguments.
   void compileExpression(String expression, Uri library,
-      {String boundaryKey: 'abc', String className: '', bool isStatic}) {
+      {String boundaryKey = 'abc', String className = '', bool isStatic}) {
     // 'compile-expression <boundarykey>
     // expression
     // definitions (one per line)
@@ -3217,7 +3217,7 @@ class FrontendServer {
   // TODO(johnniwinther): Use (required) named arguments.
   void compileExpressionToJs(String expression, String libraryUri, int line,
       int column, String moduleName,
-      {String boundaryKey: 'abc'}) {
+      {String boundaryKey = 'abc'}) {
     // 'compile-expression-to-js <boundarykey>
     // libraryUri
     // line
diff --git a/pkg/kernel/lib/ast.dart b/pkg/kernel/lib/ast.dart
index f5f6905226f..507dcda0b99 100644
--- a/pkg/kernel/lib/ast.dart
+++ b/pkg/kernel/lib/ast.dart
@@ -1221,8 +1221,8 @@ class Class extends NamedNode implements Annotatable, FileUriNode {
 
   Class(
       {required this.name,
-      bool isAbstract: false,
-      bool isAnonymousMixin: false,
+      bool isAbstract = false,
+      bool isAnonymousMixin = false,
       this.supertype,
       this.mixedInType,
       List<TypeParameter>? typeParameters,
@@ -1704,7 +1704,7 @@ class ExtensionMemberDescriptor {
   ExtensionMemberDescriptor(
       {required this.name,
       required this.kind,
-      bool isStatic: false,
+      bool isStatic = false,
       required this.member}) {
     this.isStatic = isStatic;
   }
@@ -2150,13 +2150,13 @@ class Field extends Member {
   Reference get fieldReference => super.reference;
 
   Field.mutable(Name name,
-      {this.type: const DynamicType(),
+      {this.type = const DynamicType(),
       this.initializer,
-      bool isCovariantByDeclaration: false,
-      bool isFinal: false,
-      bool isStatic: false,
-      bool isLate: false,
-      int transformerFlags: 0,
+      bool isCovariantByDeclaration = false,
+      bool isFinal = false,
+      bool isStatic = false,
+      bool isLate = false,
+      int transformerFlags = 0,
       required Uri fileUri,
       Reference? fieldReference,
       Reference? getterReference,
@@ -2177,18 +2177,18 @@ class Field extends Member {
   }
 
   Field.immutable(Name name,
-      {this.type: const DynamicType(),
+      {this.type = const DynamicType(),
       this.initializer,
-      bool isCovariantByDeclaration: false,
-      bool isFinal: false,
-      bool isConst: false,
-      bool isStatic: false,
-      bool isLate: false,
-      int transformerFlags: 0,
+      bool isCovariantByDeclaration = false,
+      bool isFinal = false,
+      bool isConst = false,
+      bool isStatic = false,
+      bool isLate = false,
+      int transformerFlags = 0,
       required Uri fileUri,
       Reference? fieldReference,
       Reference? getterReference,
-      bool isEnumElement: false})
+      bool isEnumElement = false})
       : this.getterReference = getterReference ?? new Reference(),
         this.setterReference = null,
         super(name, fileUri, fieldReference) {
@@ -2427,11 +2427,11 @@ class Constructor extends Member {
 
   Constructor(this.function,
       {required Name name,
-      bool isConst: false,
-      bool isExternal: false,
-      bool isSynthetic: false,
+      bool isConst = false,
+      bool isExternal = false,
+      bool isSynthetic = false,
       List<Initializer>? initializers,
-      int transformerFlags: 0,
+      int transformerFlags = 0,
       required Uri fileUri,
       Reference? reference})
       : this.initializers = initializers ?? <Initializer>[],
@@ -2603,9 +2603,9 @@ class RedirectingFactory extends Member {
 
   RedirectingFactory(this.targetReference,
       {required Name name,
-      bool isConst: false,
-      bool isExternal: false,
-      int transformerFlags: 0,
+      bool isConst = false,
+      bool isExternal = false,
+      int transformerFlags = 0,
       List<DartType>? typeArguments,
       required this.function,
       required Uri fileUri,
@@ -2968,16 +2968,16 @@ class Procedure extends Member {
   FunctionType? signatureType;
 
   Procedure(Name name, ProcedureKind kind, FunctionNode function,
-      {bool isAbstract: false,
-      bool isStatic: false,
-      bool isExternal: false,
-      bool isConst: false,
-      bool isExtensionMember: false,
-      bool isSynthetic: false,
-      int transformerFlags: 0,
+      {bool isAbstract = false,
+      bool isStatic = false,
+      bool isExternal = false,
+      bool isConst = false,
+      bool isExtensionMember = false,
+      bool isSynthetic = false,
+      int transformerFlags = 0,
       required Uri fileUri,
       Reference? reference,
-      ProcedureStubKind stubKind: ProcedureStubKind.Regular,
+      ProcedureStubKind stubKind = ProcedureStubKind.Regular,
       Member? stubTarget})
       : this._byReferenceRenamed(name, kind, function,
             isAbstract: isAbstract,
@@ -2994,16 +2994,16 @@ class Procedure extends Member {
                 getMemberReferenceBasedOnProcedureKind(stubTarget, kind));
 
   Procedure._byReferenceRenamed(Name name, this.kind, this.function,
-      {bool isAbstract: false,
-      bool isStatic: false,
-      bool isExternal: false,
-      bool isConst: false,
-      bool isExtensionMember: false,
-      bool isSynthetic: false,
-      int transformerFlags: 0,
+      {bool isAbstract = false,
+      bool isStatic = false,
+      bool isExternal = false,
+      bool isConst = false,
+      bool isExtensionMember = false,
+      bool isSynthetic = false,
+      int transformerFlags = 0,
       required Uri fileUri,
       Reference? reference,
-      this.stubKind: ProcedureStubKind.Regular,
+      this.stubKind = ProcedureStubKind.Regular,
       this.stubTargetReference})
       // ignore: unnecessary_null_comparison
       : assert(kind != null),
@@ -3748,8 +3748,8 @@ class FunctionNode extends TreeNode {
       List<VariableDeclaration>? positionalParameters,
       List<VariableDeclaration>? namedParameters,
       int? requiredParameterCount,
-      this.returnType: const DynamicType(),
-      this.asyncMarker: AsyncMarker.Sync,
+      this.returnType = const DynamicType(),
+      this.asyncMarker = AsyncMarker.Sync,
       AsyncMarker? dartAsyncMarker,
       this.futureValueType})
       : this.positionalParameters =
@@ -5384,7 +5384,7 @@ class Arguments extends TreeNode {
   }
 
   @override
-  void toTextInternal(AstPrinter printer, {bool includeTypeArguments: true}) {
+  void toTextInternal(AstPrinter printer, {bool includeTypeArguments = true}) {
     if (includeTypeArguments) {
       printer.writeTypeArguments(types);
     }
@@ -6600,7 +6600,8 @@ class StaticInvocation extends InvocationExpression {
   @override
   Name get name => target.name;
 
-  StaticInvocation(Procedure target, Arguments arguments, {bool isConst: false})
+  StaticInvocation(Procedure target, Arguments arguments,
+      {bool isConst = false})
       : this.byReference(
             // An invocation doesn't refer to the setter.
             getNonNullableMemberReferenceGetter(target),
@@ -6608,7 +6609,7 @@ class StaticInvocation extends InvocationExpression {
             isConst: isConst);
 
   StaticInvocation.byReference(this.targetReference, this.arguments,
-      {this.isConst: false}) {
+      {this.isConst = false}) {
     arguments.parent = this;
   }
 
@@ -6688,7 +6689,7 @@ class ConstructorInvocation extends InvocationExpression {
   Name get name => target.name;
 
   ConstructorInvocation(Constructor target, Arguments arguments,
-      {bool isConst: false})
+      {bool isConst = false})
       : this.byReference(
             // A constructor doesn't refer to the setter.
             getNonNullableMemberReferenceGetter(target),
@@ -6696,7 +6697,7 @@ class ConstructorInvocation extends InvocationExpression {
             isConst: isConst);
 
   ConstructorInvocation.byReference(this.targetReference, this.arguments,
-      {this.isConst: false}) {
+      {this.isConst = false}) {
     arguments.parent = this;
   }
 
@@ -7177,7 +7178,7 @@ class ListConcatenation extends Expression {
   DartType typeArgument;
   final List<Expression> lists;
 
-  ListConcatenation(this.lists, {this.typeArgument: const DynamicType()}) {
+  ListConcatenation(this.lists, {this.typeArgument = const DynamicType()}) {
     setParents(lists, this);
   }
 
@@ -7247,7 +7248,7 @@ class SetConcatenation extends Expression {
   DartType typeArgument;
   final List<Expression> sets;
 
-  SetConcatenation(this.sets, {this.typeArgument: const DynamicType()}) {
+  SetConcatenation(this.sets, {this.typeArgument = const DynamicType()}) {
     setParents(sets, this);
   }
 
@@ -7319,8 +7320,8 @@ class MapConcatenation extends Expression {
   final List<Expression> maps;
 
   MapConcatenation(this.maps,
-      {this.keyType: const DynamicType(),
-      this.valueType: const DynamicType()}) {
+      {this.keyType = const DynamicType(),
+      this.valueType = const DynamicType()}) {
     setParents(maps, this);
   }
 
@@ -8269,7 +8270,7 @@ class ListLiteral extends Expression {
   final List<Expression> expressions;
 
   ListLiteral(this.expressions,
-      {this.typeArgument: const DynamicType(), this.isConst: false}) {
+      {this.typeArgument = const DynamicType(), this.isConst = false}) {
     // ignore: unnecessary_null_comparison
     assert(typeArgument != null);
     setParents(expressions, this);
@@ -8333,7 +8334,7 @@ class SetLiteral extends Expression {
   final List<Expression> expressions;
 
   SetLiteral(this.expressions,
-      {this.typeArgument: const DynamicType(), this.isConst: false}) {
+      {this.typeArgument = const DynamicType(), this.isConst = false}) {
     // ignore: unnecessary_null_comparison
     assert(typeArgument != null);
     setParents(expressions, this);
@@ -8398,9 +8399,9 @@ class MapLiteral extends Expression {
   final List<MapLiteralEntry> entries;
 
   MapLiteral(this.entries,
-      {this.keyType: const DynamicType(),
-      this.valueType: const DynamicType(),
-      this.isConst: false}) {
+      {this.keyType = const DynamicType(),
+      this.valueType = const DynamicType(),
+      this.isConst = false}) {
     // ignore: unnecessary_null_comparison
     assert(keyType != null);
     // ignore: unnecessary_null_comparison
@@ -9756,7 +9757,7 @@ class ForInStatement extends Statement {
   bool isAsync; // True if this is an 'await for' loop.
 
   ForInStatement(this.variable, this.iterable, this.body,
-      {this.isAsync: false}) {
+      {this.isAsync = false}) {
     variable.parent = this;
     iterable.parent = this;
     body.parent = this;
@@ -10004,7 +10005,7 @@ class SwitchCase extends TreeNode {
   bool isDefault;
 
   SwitchCase(this.expressions, this.expressionOffsets, Statement? body,
-      {this.isDefault: false}) {
+      {this.isDefault = false}) {
     setParents(expressions, this);
     if (body != null) {
       this.body = body..parent = this;
@@ -10265,7 +10266,7 @@ class TryCatch extends Statement {
   List<Catch> catches;
   bool isSynthetic;
 
-  TryCatch(this.body, this.catches, {this.isSynthetic: false}) {
+  TryCatch(this.body, this.catches, {this.isSynthetic = false}) {
     body.parent = this;
     setParents(catches, this);
   }
@@ -10326,7 +10327,7 @@ class Catch extends TreeNode {
   Statement body;
 
   Catch(this.exception, this.body,
-      {this.guard: const DynamicType(), this.stackTrace}) {
+      {this.guard = const DynamicType(), this.stackTrace}) {
     // ignore: unnecessary_null_comparison
     assert(guard != null);
     exception?.parent = this;
@@ -10509,7 +10510,7 @@ class YieldStatement extends Statement {
   Expression expression;
   int flags = 0;
 
-  YieldStatement(this.expression, {bool isYieldStar: false}) {
+  YieldStatement(this.expression, {bool isYieldStar = false}) {
     expression.parent = this;
     this.isYieldStar = isYieldStar;
   }
@@ -10612,16 +10613,16 @@ class VariableDeclaration extends Statement implements Annotatable {
 
   VariableDeclaration(this.name,
       {this.initializer,
-      this.type: const DynamicType(),
-      int flags: -1,
-      bool isFinal: false,
-      bool isConst: false,
-      bool isInitializingFormal: false,
-      bool isCovariantByDeclaration: false,
-      bool isLate: false,
-      bool isRequired: false,
-      bool isLowered: false,
-      bool hasDeclaredInitializer: false}) {
+      this.type = const DynamicType(),
+      int flags = -1,
+      bool isFinal = false,
+      bool isConst = false,
+      bool isInitializingFormal = false,
+      bool isCovariantByDeclaration = false,
+      bool isLate = false,
+      bool isRequired = false,
+      bool isLowered = false,
+      bool hasDeclaredInitializer = false}) {
     // ignore: unnecessary_null_comparison
     assert(type != null);
     initializer?.parent = this;
@@ -10641,13 +10642,13 @@ class VariableDeclaration extends Statement implements Annotatable {
 
   /// Creates a synthetic variable with the given expression as initializer.
   VariableDeclaration.forValue(this.initializer,
-      {bool isFinal: true,
-      bool isConst: false,
-      bool isInitializingFormal: false,
-      bool isLate: false,
-      bool isRequired: false,
-      bool isLowered: false,
-      this.type: const DynamicType()}) {
+      {bool isFinal = true,
+      bool isConst = false,
+      bool isInitializingFormal = false,
+      bool isLate = false,
+      bool isRequired = false,
+      bool isLowered = false,
+      this.type = const DynamicType()}) {
     // ignore: unnecessary_null_comparison
     assert(type != null);
     initializer?.parent = this;
@@ -11550,8 +11551,8 @@ class FunctionType extends DartType {
 
   FunctionType(List<DartType> positionalParameters, this.returnType,
       this.declaredNullability,
-      {this.namedParameters: const <NamedType>[],
-      this.typeParameters: const <TypeParameter>[],
+      {this.namedParameters = const <NamedType>[],
+      this.typeParameters = const <TypeParameter>[],
       int? requiredParameterCount})
       : this.positionalParameters = positionalParameters,
         this.requiredParameterCount =
@@ -12043,7 +12044,7 @@ class NamedType extends Node implements Comparable<NamedType> {
   final DartType type;
   final bool isRequired;
 
-  const NamedType(this.name, this.type, {this.isRequired: false});
+  const NamedType(this.name, this.type, {this.isRequired = false});
 
   @override
   bool operator ==(Object other) => equals(other, null);
@@ -14184,12 +14185,12 @@ abstract class BinarySink {
 
   void enterScope(
       {List<TypeParameter> typeParameters,
-      bool memberScope: false,
-      bool variableScope: false});
+      bool memberScope = false,
+      bool variableScope = false});
   void leaveScope(
       {List<TypeParameter> typeParameters,
-      bool memberScope: false,
-      bool variableScope: false});
+      bool memberScope = false,
+      bool variableScope = false});
 }
 
 abstract class BinarySource {
diff --git a/pkg/kernel/lib/binary/ast_from_binary.dart b/pkg/kernel/lib/binary/ast_from_binary.dart
index 5feffea3cc1..0847886c78b 100644
--- a/pkg/kernel/lib/binary/ast_from_binary.dart
+++ b/pkg/kernel/lib/binary/ast_from_binary.dart
@@ -623,7 +623,7 @@ class BinaryBuilder {
   /// each concatenated dill - each of which knowing where in the combined dill
   /// it came from. If [createView] is false null will be returned.
   List<SubComponentView>? readComponent(Component component,
-      {bool checkCanonicalNames: false, bool createView: false}) {
+      {bool checkCanonicalNames = false, bool createView = false}) {
     return Timeline.timeSync<List<SubComponentView>?>(
         "BinaryBuilder.readComponent", () {
       _checkEmptyInput();
@@ -698,7 +698,7 @@ class BinaryBuilder {
   /// This should *only* be used when there is a reason to not allow
   /// concatenated files.
   void readSingleFileComponent(Component component,
-      {bool checkCanonicalNames: false}) {
+      {bool checkCanonicalNames = false}) {
     List<int> componentFileSizes = _indexComponents();
     if (componentFileSizes.isEmpty) throw fail("invalid component data");
     _readOneComponent(component, componentFileSizes[0]);
@@ -807,7 +807,7 @@ class BinaryBuilder {
 
   SubComponentView? _readOneComponent(
       Component component, int componentFileSize,
-      {bool createView: false}) {
+      {bool createView = false}) {
     _componentStartOffset = _byteOffset;
 
     final int magic = readUint32();
@@ -1843,7 +1843,7 @@ class BinaryBuilder {
   }
 
   FunctionNode readFunctionNode(
-      {bool lazyLoadBody: false, int outerEndOffset: -1}) {
+      {bool lazyLoadBody = false, int outerEndOffset = -1}) {
     int tag = readByte();
     assert(tag == Tag.FunctionNode);
     int offset = readOffset();
@@ -3030,7 +3030,7 @@ class BinaryBuilder {
     return readAndCheckOptionTag() ? readDartType() : null;
   }
 
-  DartType readDartType({bool forSupertype: false}) {
+  DartType readDartType({bool forSupertype = false}) {
     int tag = readByte();
     switch (tag) {
       case Tag.TypedefType:
@@ -3445,7 +3445,7 @@ class BinaryBuilderWithMetadata extends BinaryBuilder implements BinarySource {
 
   @override
   FunctionNode readFunctionNode(
-      {bool lazyLoadBody: false, int outerEndOffset: -1}) {
+      {bool lazyLoadBody = false, int outerEndOffset = -1}) {
     final int nodeOffset = _byteOffset;
     final FunctionNode result = super.readFunctionNode(
         lazyLoadBody: lazyLoadBody, outerEndOffset: outerEndOffset);
diff --git a/pkg/kernel/lib/binary/ast_to_binary.dart b/pkg/kernel/lib/binary/ast_to_binary.dart
index 8b33a8b015e..e99a100a975 100644
--- a/pkg/kernel/lib/binary/ast_to_binary.dart
+++ b/pkg/kernel/lib/binary/ast_to_binary.dart
@@ -674,8 +674,8 @@ class BinaryPrinter implements Visitor<void>, BinarySink {
   @override
   void enterScope(
       {List<TypeParameter>? typeParameters,
-      bool memberScope: false,
-      bool variableScope: false}) {
+      bool memberScope = false,
+      bool variableScope = false}) {
     if (typeParameters != null) {
       _typeParameterIndexer.enter(typeParameters);
     }
@@ -691,8 +691,8 @@ class BinaryPrinter implements Visitor<void>, BinarySink {
   @override
   void leaveScope(
       {List<TypeParameter>? typeParameters,
-      bool memberScope: false,
-      bool variableScope: false}) {
+      bool memberScope = false,
+      bool variableScope = false}) {
     if (variableScope) {
       _variableIndexer!.popScope();
     }
diff --git a/pkg/kernel/lib/class_hierarchy.dart b/pkg/kernel/lib/class_hierarchy.dart
index 8f461acd787..e460042fd42 100644
--- a/pkg/kernel/lib/class_hierarchy.dart
+++ b/pkg/kernel/lib/class_hierarchy.dart
@@ -71,7 +71,7 @@ abstract class ClassHierarchyMembers {
   ///
   /// If multiple members with that name are inherited and not overridden, the
   /// member from the first declared supertype is returned.
-  Member? getInterfaceMember(Class class_, Name name, {bool setter: false});
+  Member? getInterfaceMember(Class class_, Name name, {bool setter = false});
 }
 
 /// Interface for answering various subclassing queries.
@@ -124,7 +124,7 @@ abstract class ClassHierarchy
   ///
   /// If the class is abstract, abstract members are ignored and the dispatch
   /// is resolved if the class was not abstract.
-  Member? getDispatchTarget(Class class_, Name name, {bool setter: false});
+  Member? getDispatchTarget(Class class_, Name name, {bool setter = false});
 
   /// Returns the list of potential targets of dynamic dispatch to an instance
   /// of [class_].
@@ -136,7 +136,7 @@ abstract class ClassHierarchy
   /// See [getDispatchTarget] for more details.
   ///
   /// The returned list should not be modified.
-  List<Member> getDispatchTargets(Class class_, {bool setters: false});
+  List<Member> getDispatchTargets(Class class_, {bool setters = false});
 
   /// Returns the list of members denoting the interface for [class_], which
   /// may include abstract members.
@@ -146,14 +146,14 @@ abstract class ClassHierarchy
   /// in the class.
   ///
   /// Also see [getInterfaceMember].
-  List<Member> getInterfaceMembers(Class class_, {bool setters: false});
+  List<Member> getInterfaceMembers(Class class_, {bool setters = false});
 
   /// Returns the list of members declared in [class_], including abstract
   /// members.
   ///
   /// Members are sorted by name so that they may be efficiently compared across
   /// classes.
-  List<Member> getDeclaredMembers(Class class_, {bool setters: false});
+  List<Member> getDeclaredMembers(Class class_, {bool setters = false});
 
   /// True if [subclass] inherits from [superclass] though zero or more
   /// `extends` relationships.
@@ -229,7 +229,7 @@ abstract class ClassHierarchy
   /// changed too, or - if [findDescendants] is true, the ClassHierarchy will
   /// spend the time to find them for the caller.
   ClassHierarchy applyMemberChanges(Iterable<Class> classes,
-      {bool findDescendants: false});
+      {bool findDescendants = false});
 
   /// Merges two sorted lists.
   ///
@@ -355,7 +355,7 @@ abstract class ClassHierarchySubtypes {
   /// target, or `null` if it could not be resolved or there are multiple
   /// possible targets.
   Member? getSingleTargetForInterfaceInvocation(Member interfaceTarget,
-      {bool setter: false});
+      {bool setter = false});
 }
 
 class _ClassInfoSubtype {
@@ -418,7 +418,7 @@ class _ClosedWorldClassHierarchySubtypes implements ClassHierarchySubtypes {
 
   @override
   Member? getSingleTargetForInterfaceInvocation(Member interfaceTarget,
-      {bool setter: false}) {
+      {bool setter = false}) {
     if (invalidated) throw "This data structure has been invalidated";
     Name name = interfaceTarget.name;
     Member? target = null;
@@ -800,7 +800,7 @@ class ClosedWorldClassHierarchy implements ClassHierarchy {
   }
 
   @override
-  Member? getDispatchTarget(Class class_, Name name, {bool setter: false}) {
+  Member? getDispatchTarget(Class class_, Name name, {bool setter = false}) {
     List<Member> list =
         _buildImplementedMembers(class_, infoFor(class_), setters: setter);
     Member? member = ClassHierarchy.findMemberByName(list, name);
@@ -812,30 +812,30 @@ class ClosedWorldClassHierarchy implements ClassHierarchy {
   }
 
   @override
-  List<Member> getDispatchTargets(Class class_, {bool setters: false}) {
+  List<Member> getDispatchTargets(Class class_, {bool setters = false}) {
     return _buildImplementedMembers(class_, infoFor(class_), setters: setters);
   }
 
   @override
-  Member? getInterfaceMember(Class class_, Name name, {bool setter: false}) {
+  Member? getInterfaceMember(Class class_, Name name, {bool setter = false}) {
     List<Member> list = getInterfaceMembers(class_, setters: setter);
     return ClassHierarchy.findMemberByName(list, name);
   }
 
   @override
-  List<Member> getInterfaceMembers(Class class_, {bool setters: false}) {
+  List<Member> getInterfaceMembers(Class class_, {bool setters = false}) {
     return _buildInterfaceMembers(class_, infoFor(class_), setters: setters);
   }
 
   @override
-  List<Member> getDeclaredMembers(Class class_, {bool setters: false}) {
+  List<Member> getDeclaredMembers(Class class_, {bool setters = false}) {
     return _buildDeclaredMembers(class_, infoFor(class_), setters: setters);
   }
 
   @override
   void forEachOverridePair(Class class_,
       callback(Member declaredMember, Member interfaceMember, bool isSetter),
-      {bool crossGettersSetters: false}) {
+      {bool crossGettersSetters = false}) {
     _ClassInfo info = infoFor(class_);
     for (Supertype supertype in class_.supers) {
       Class superclass = supertype.classNode;
@@ -854,7 +854,7 @@ class ClosedWorldClassHierarchy implements ClassHierarchy {
       List<Member> declaredList,
       List<Member> inheritedList,
       callback(Member declaredMember, Member interfaceMember, bool isSetter),
-      {bool isSetter: false}) {
+      {bool isSetter = false}) {
     int i = 0, j = 0;
     while (i < declaredList.length && j < inheritedList.length) {
       Member declared = declaredList[i];
@@ -984,7 +984,7 @@ class ClosedWorldClassHierarchy implements ClassHierarchy {
 
   @override
   ClassHierarchy applyMemberChanges(Iterable<Class> classes,
-      {bool findDescendants: false}) {
+      {bool findDescendants = false}) {
     if (classes.isEmpty) return this;
 
     List<_ClassInfo> infos = <_ClassInfo>[];
@@ -1317,7 +1317,7 @@ class ClosedWorldClassHierarchy implements ClassHierarchy {
   /// Both lists must be sorted by name beforehand.
   static List<Member> _inheritMembers(
       List<Member> declared, List<Member> inherited,
-      {bool skipAbstractMembers: false}) {
+      {bool skipAbstractMembers = false}) {
     List<Member> result = new List<Member>.filled(
         declared.length + inherited.length, dummyMember,
         growable: true);
diff --git a/pkg/kernel/lib/kernel.dart b/pkg/kernel/lib/kernel.dart
index e5787d914fd..ca022d958c4 100644
--- a/pkg/kernel/lib/kernel.dart
+++ b/pkg/kernel/lib/kernel.dart
@@ -80,7 +80,7 @@ void writeLibraryToText(Library library, {String? path}) {
 }
 
 void writeComponentToText(Component component,
-    {String? path, bool showOffsets: false, bool showMetadata: false}) {
+    {String? path, bool showOffsets = false, bool showMetadata = false}) {
   StringBuffer buffer = new StringBuffer();
   new Printer(buffer, showOffsets: showOffsets, showMetadata: showMetadata)
       .writeComponentFile(component);
diff --git a/pkg/kernel/lib/naive_type_checker.dart b/pkg/kernel/lib/naive_type_checker.dart
index 567c642432c..2ff22ac0e34 100644
--- a/pkg/kernel/lib/naive_type_checker.dart
+++ b/pkg/kernel/lib/naive_type_checker.dart
@@ -19,7 +19,7 @@ class NaiveTypeChecker extends type_checker.TypeChecker {
   final FailureListener failures;
 
   factory NaiveTypeChecker(FailureListener failures, Component component,
-      {bool ignoreSdk: false}) {
+      {bool ignoreSdk = false}) {
     CoreTypes coreTypes = new CoreTypes(component);
     return new NaiveTypeChecker._(
         failures,
diff --git a/pkg/kernel/lib/src/equivalence.dart b/pkg/kernel/lib/src/equivalence.dart
index 9ee89a7cdc4..81d90ea2a72 100644
--- a/pkg/kernel/lib/src/equivalence.dart
+++ b/pkg/kernel/lib/src/equivalence.dart
@@ -23,7 +23,7 @@ part 'equivalence_helpers.dart';
 class EquivalenceVisitor implements Visitor1<bool, Node> {
   final EquivalenceStrategy strategy;
 
-  EquivalenceVisitor({this.strategy: const EquivalenceStrategy()});
+  EquivalenceVisitor({this.strategy = const EquivalenceStrategy()});
 
   @override
   bool defaultNode(Node node, Node other) {
@@ -1307,7 +1307,7 @@ class EquivalenceVisitor implements Visitor1<bool, Node> {
   ///
   /// If [f] returns `false`, the returned result is marked as having
   /// inequivalences even when non have being registered.
-  EquivalenceResult inSubState(bool Function() f, {bool isAsserting: false}) {
+  EquivalenceResult inSubState(bool Function() f, {bool isAsserting = false}) {
     CheckingState _oldState = _checkingState;
     _checkingState = _checkingState.createSubState(isAsserting: isAsserting);
     bool hasInequivalences = f();
@@ -1366,7 +1366,7 @@ class EquivalenceVisitor implements Visitor1<bool, Node> {
 ///
 /// Returns an [EquivalenceResult] containing the found inequivalences.
 EquivalenceResult checkEquivalence(Node a, Node b,
-    {EquivalenceStrategy strategy: const EquivalenceStrategy()}) {
+    {EquivalenceStrategy strategy = const EquivalenceStrategy()}) {
   EquivalenceVisitor visitor = new EquivalenceVisitor(strategy: strategy);
   visitor.checkNodes(a, b, 'root');
   return visitor.toResult();
diff --git a/pkg/kernel/lib/src/equivalence_helpers.dart b/pkg/kernel/lib/src/equivalence_helpers.dart
index bb7bf62635f..7ea65b5c84b 100644
--- a/pkg/kernel/lib/src/equivalence_helpers.dart
+++ b/pkg/kernel/lib/src/equivalence_helpers.dart
@@ -39,7 +39,7 @@ class CheckingState {
   final bool isAsserting;
 
   CheckingState(
-      {this.isAsserting: true,
+      {this.isAsserting = true,
       UnionFind<Reference>? assumedReferences,
       State? currentState})
       : _assumedReferences = assumedReferences ?? new UnionFind<Reference>(),
@@ -48,7 +48,7 @@ class CheckingState {
   /// Create a new [CheckingState] that inherits the [_currentState] and a copy
   /// of the current assumptions. If [isAsserting] is `true`, the new state
   /// will register inequivalences.
-  CheckingState createSubState({bool isAsserting: false}) {
+  CheckingState createSubState({bool isAsserting = false}) {
     return new CheckingState(
         isAsserting: isAsserting,
         assumedReferences: _assumedReferences.clone(),
@@ -152,7 +152,7 @@ class CheckingState {
   /// Returns the [EquivalenceResult] for the registered inequivalences. If
   /// [hasInequivalences] is `true`, the result is marked has having
   /// inequivalences, even when none have been registered.
-  EquivalenceResult toResult({bool hasInequivalences: false}) =>
+  EquivalenceResult toResult({bool hasInequivalences = false}) =>
       new EquivalenceResult(
           hasInequivalences: hasInequivalences,
           registeredInequivalences: _inequivalences.toList());
@@ -164,7 +164,7 @@ class EquivalenceResult {
   final List<Inequivalence> registeredInequivalences;
 
   EquivalenceResult(
-      {this.hasInequivalences: false, required this.registeredInequivalences});
+      {this.hasInequivalences = false, required this.registeredInequivalences});
 
   bool get isEquivalent =>
       !hasInequivalences && registeredInequivalences.isEmpty;
diff --git a/pkg/kernel/lib/src/hierarchy_based_type_environment.dart b/pkg/kernel/lib/src/hierarchy_based_type_environment.dart
index 15812bfe8b2..dc06fd55fe4 100644
--- a/pkg/kernel/lib/src/hierarchy_based_type_environment.dart
+++ b/pkg/kernel/lib/src/hierarchy_based_type_environment.dart
@@ -33,7 +33,7 @@ class HierarchyBasedTypeEnvironment extends TypeEnvironment {
   }
 
   @override
-  Member? getInterfaceMember(Class cls, Name name, {bool setter: false}) {
+  Member? getInterfaceMember(Class cls, Name name, {bool setter = false}) {
     return hierarchy.getInterfaceMember(cls, name, setter: setter);
   }
 }
diff --git a/pkg/kernel/lib/src/node_creator.dart b/pkg/kernel/lib/src/node_creator.dart
index eb1d1cffc93..40baf15f8f7 100644
--- a/pkg/kernel/lib/src/node_creator.dart
+++ b/pkg/kernel/lib/src/node_creator.dart
@@ -59,13 +59,13 @@ class NodeCreator {
 
   /// Creates a [NodeCreator] requested to create nodes of the specified kinds.
   NodeCreator({
-    Iterable<ExpressionKind> expressions: ExpressionKind.values,
-    Iterable<StatementKind> statements: StatementKind.values,
-    Iterable<DartTypeKind> dartTypes: DartTypeKind.values,
-    Iterable<ConstantKind> constants: ConstantKind.values,
-    Iterable<InitializerKind> initializers: InitializerKind.values,
-    Iterable<MemberKind> members: MemberKind.values,
-    Iterable<NodeKind> nodes: NodeKind.values,
+    Iterable<ExpressionKind> expressions = ExpressionKind.values,
+    Iterable<StatementKind> statements = StatementKind.values,
+    Iterable<DartTypeKind> dartTypes = DartTypeKind.values,
+    Iterable<ConstantKind> constants = ConstantKind.values,
+    Iterable<InitializerKind> initializers = InitializerKind.values,
+    Iterable<MemberKind> members = MemberKind.values,
+    Iterable<NodeKind> nodes = NodeKind.values,
   })  : _pendingExpressions = new Map<ExpressionKind, int>.fromIterables(
             expressions, new List<int>.filled(expressions.length, 0)),
         _pendingStatements = new Map<StatementKind, int>.fromIterables(
@@ -336,7 +336,7 @@ class NodeCreator {
   /// If no such [LibraryDependency] exists in [_neededLibraryDependencies], a
   /// new [LibraryDependency] is created and added to
   /// [_neededLibraryDependencies].
-  LibraryDependency _needLibraryDependency({bool deferred: false}) {
+  LibraryDependency _needLibraryDependency({bool deferred = false}) {
     for (LibraryDependency libraryDependency in _neededLibraryDependencies) {
       if (!deferred || libraryDependency.isDeferred) {
         return libraryDependency;
diff --git a/pkg/kernel/lib/src/printer.dart b/pkg/kernel/lib/src/printer.dart
index 0656adf267b..17dd31fb1b8 100644
--- a/pkg/kernel/lib/src/printer.dart
+++ b/pkg/kernel/lib/src/printer.dart
@@ -63,16 +63,16 @@ class AstTextStrategy {
   final int? maxConstantDepth;
 
   const AstTextStrategy(
-      {this.includeLibraryNamesInTypes: false,
-      this.includeLibraryNamesInMembers: false,
-      this.includeAuxiliaryProperties: false,
-      this.useMultiline: true,
-      this.indentation: '  ',
-      this.maxStatementDepth: 50,
-      this.maxStatementsLength: null,
-      this.maxExpressionDepth: 50,
-      this.maxExpressionsLength: null,
-      this.maxConstantDepth: 10});
+      {this.includeLibraryNamesInTypes = false,
+      this.includeLibraryNamesInMembers = false,
+      this.includeAuxiliaryProperties = false,
+      this.useMultiline = true,
+      this.indentation = '  ',
+      this.maxStatementDepth = 50,
+      this.maxStatementsLength = null,
+      this.maxExpressionDepth = 50,
+      this.maxExpressionsLength = null,
+      this.maxConstantDepth = 10});
 }
 
 class AstPrinter {
@@ -101,7 +101,7 @@ class AstPrinter {
     _sb.write(value);
   }
 
-  void writeClassName(Reference? reference, {bool forType: false}) {
+  void writeClassName(Reference? reference, {bool forType = false}) {
     _sb.write(qualifiedClassNameToStringByReference(reference,
         includeLibraryName: forType
             ? _strategy.includeLibraryNamesInTypes
@@ -369,7 +369,7 @@ class AstPrinter {
   ///
   /// If [includeTypeArguments] is `true` type arguments in [node] are included.
   /// Otherwise only the positional and named arguments are included.
-  void writeArguments(Arguments node, {bool includeTypeArguments: true}) {
+  void writeArguments(Arguments node, {bool includeTypeArguments = true}) {
     node.toTextInternal(this, includeTypeArguments: includeTypeArguments);
   }
 
@@ -382,10 +382,10 @@ class AstPrinter {
   /// If [isLate] and [type] are provided, these values are used instead of
   /// the corresponding properties on [node].
   void writeVariableDeclaration(VariableDeclaration node,
-      {bool includeModifiersAndType: true,
+      {bool includeModifiersAndType = true,
       bool? isLate,
       DartType? type,
-      bool includeInitializer: true}) {
+      bool includeInitializer = true}) {
     if (includeModifiersAndType) {
       if (node.isRequired) {
         _sb.write('required ');
diff --git a/pkg/kernel/lib/src/text_util.dart b/pkg/kernel/lib/src/text_util.dart
index fdc2a10e0ae..94e984c5c32 100644
--- a/pkg/kernel/lib/src/text_util.dart
+++ b/pkg/kernel/lib/src/text_util.dart
@@ -17,7 +17,7 @@ String nullabilityToString(Nullability nullability) {
   }
 }
 
-String nameToString(Name? node, {bool includeLibraryName: false}) {
+String nameToString(Name? node, {bool includeLibraryName = false}) {
   if (node == null) {
     return 'null';
   } else if (node.library != null && includeLibraryName) {
@@ -32,7 +32,7 @@ String libraryNameToString(Library? node) {
 }
 
 String qualifiedClassNameToString(Class node,
-    {bool includeLibraryName: false}) {
+    {bool includeLibraryName = false}) {
   TreeNode? parent = node.parent;
   if (parent is Library && includeLibraryName) {
     return libraryNameToString(parent) + '::' + classNameToString(node);
@@ -42,7 +42,8 @@ String qualifiedClassNameToString(Class node,
 }
 
 String qualifiedCanonicalNameToString(CanonicalName canonicalName,
-    {bool includeLibraryName: false, bool includeLibraryNamesInTypes: false}) {
+    {bool includeLibraryName = false,
+    bool includeLibraryNamesInTypes = false}) {
   if (canonicalName.isRoot) {
     return '<root>';
   } else if (canonicalName.parent!.isRoot) {
@@ -90,7 +91,7 @@ String qualifiedCanonicalNameToString(CanonicalName canonicalName,
 }
 
 String qualifiedClassNameToStringByReference(Reference? reference,
-    {bool includeLibraryName: false}) {
+    {bool includeLibraryName = false}) {
   if (reference == null) {
     return '<missing-class-reference>';
   } else {
@@ -116,7 +117,7 @@ String classNameToString(Class? node) {
 }
 
 String qualifiedExtensionNameToString(Extension node,
-    {bool includeLibraryName: false}) {
+    {bool includeLibraryName = false}) {
   TreeNode? parent = node.parent;
   if (parent is Library && includeLibraryName) {
     return libraryNameToString(parent) + '::' + extensionNameToString(node);
@@ -126,7 +127,7 @@ String qualifiedExtensionNameToString(Extension node,
 }
 
 String qualifiedExtensionNameToStringByReference(Reference? reference,
-    {bool includeLibraryName: false}) {
+    {bool includeLibraryName = false}) {
   if (reference == null) {
     return '<missing-extension-reference>';
   } else {
@@ -152,7 +153,7 @@ String extensionNameToString(Extension? node) {
 }
 
 String qualifiedTypedefNameToString(Typedef node,
-    {bool includeLibraryName: false}) {
+    {bool includeLibraryName = false}) {
   TreeNode? parent = node.parent;
   if (parent is Library && includeLibraryName) {
     return libraryNameToString(parent) + '::' + typedefNameToString(node);
@@ -162,7 +163,7 @@ String qualifiedTypedefNameToString(Typedef node,
 }
 
 String qualifiedTypedefNameToStringByReference(Reference? reference,
-    {bool includeLibraryName: false}) {
+    {bool includeLibraryName = false}) {
   if (reference == null) {
     return '<missing-typedef-reference>';
   } else {
@@ -188,7 +189,7 @@ String typedefNameToString(Typedef? node) {
 }
 
 String qualifiedMemberNameToString(Member node,
-    {bool includeLibraryName: false}) {
+    {bool includeLibraryName = false}) {
   TreeNode? parent = node.parent;
   if (parent is Class) {
     return qualifiedClassNameToString(parent,
@@ -203,7 +204,7 @@ String qualifiedMemberNameToString(Member node,
 }
 
 String qualifiedMemberNameToStringByReference(Reference? reference,
-    {bool includeLibraryName: false}) {
+    {bool includeLibraryName = false}) {
   if (reference == null) {
     return '<missing-member-reference>';
   } else {
@@ -229,7 +230,7 @@ String memberNameToString(Member node) {
 }
 
 String qualifiedTypeParameterNameToString(TypeParameter node,
-    {bool includeLibraryName: false}) {
+    {bool includeLibraryName = false}) {
   TreeNode? parent = node.parent;
   if (parent is Class) {
     return qualifiedClassNameToString(parent,
diff --git a/pkg/kernel/lib/src/tool/command_line_util.dart b/pkg/kernel/lib/src/tool/command_line_util.dart
index d97b20d2f66..802af3de286 100644
--- a/pkg/kernel/lib/src/tool/command_line_util.dart
+++ b/pkg/kernel/lib/src/tool/command_line_util.dart
@@ -9,7 +9,7 @@ import 'package:kernel/kernel.dart';
 class CommandLineHelper {
   static void requireExactlyOneArgument(
       List<String> args, void Function() usage,
-      {bool requireFileExists: false}) {
+      {bool requireFileExists = false}) {
     if (args.length != 1) {
       print("Expected exactly 1 argument, got ${args.length}.");
       usage();
diff --git a/pkg/kernel/lib/src/union_find.dart b/pkg/kernel/lib/src/union_find.dart
index bab7fc6f77e..8ca2868e772 100644
--- a/pkg/kernel/lib/src/union_find.dart
+++ b/pkg/kernel/lib/src/union_find.dart
@@ -19,7 +19,7 @@ class UnionFind<T> {
   final bool _useIdentity;
   final Map<T, UnionFindNode<T>> _nodeMap;
 
-  UnionFind({bool useIdentity: false})
+  UnionFind({bool useIdentity = false})
       : _nodeMap = useIdentity ? new LinkedHashMap.identity() : {},
         _useIdentity = useIdentity;
 
diff --git a/pkg/kernel/lib/target/targets.dart b/pkg/kernel/lib/target/targets.dart
index 0c594a5e202..5b8eca8d18f 100644
--- a/pkg/kernel/lib/target/targets.dart
+++ b/pkg/kernel/lib/target/targets.dart
@@ -231,7 +231,7 @@ class CustomizedDartLibrarySupport implements DartLibrarySupport {
   final Set<String> unsupported;
 
   const CustomizedDartLibrarySupport(
-      {this.supported: const {}, this.unsupported: const {}});
+      {this.supported = const {}, this.unsupported = const {}});
 
   @override
   bool computeDartLibrarySupport(String libraryName,
@@ -514,16 +514,16 @@ abstract class Target {
 
   Expression instantiateNoSuchMethodError(CoreTypes coreTypes,
       Expression receiver, String name, Arguments arguments, int offset,
-      {bool isMethod: false,
-      bool isGetter: false,
-      bool isSetter: false,
-      bool isField: false,
-      bool isLocalVariable: false,
-      bool isDynamic: false,
-      bool isSuper: false,
-      bool isStatic: false,
-      bool isConstructor: false,
-      bool isTopLevel: false});
+      {bool isMethod = false,
+      bool isGetter = false,
+      bool isSetter = false,
+      bool isField = false,
+      bool isLocalVariable = false,
+      bool isDynamic = false,
+      bool isSuper = false,
+      bool isStatic = false,
+      bool isConstructor = false,
+      bool isTopLevel = false});
 
   /// Configure the given [Component] in a target specific way.
   /// Returns the configured component.
@@ -621,16 +621,16 @@ class NoneTarget extends Target {
   @override
   Expression instantiateNoSuchMethodError(CoreTypes coreTypes,
       Expression receiver, String name, Arguments arguments, int offset,
-      {bool isMethod: false,
-      bool isGetter: false,
-      bool isSetter: false,
-      bool isField: false,
-      bool isLocalVariable: false,
-      bool isDynamic: false,
-      bool isSuper: false,
-      bool isStatic: false,
-      bool isConstructor: false,
-      bool isTopLevel: false}) {
+      {bool isMethod = false,
+      bool isGetter = false,
+      bool isSetter = false,
+      bool isField = false,
+      bool isLocalVariable = false,
+      bool isDynamic = false,
+      bool isSuper = false,
+      bool isStatic = false,
+      bool isConstructor = false,
+      bool isTopLevel = false}) {
     return new InvalidExpression(null);
   }
 
@@ -779,8 +779,8 @@ class TestTargetFlags extends TargetFlags {
       this.forceNoExplicitGetterCallsForTesting,
       this.forceConstructorTearOffLoweringForTesting,
       bool enableNullSafety = false,
-      this.supportedDartLibraries: const {},
-      this.unsupportedDartLibraries: const {}})
+      this.supportedDartLibraries = const {},
+      this.unsupportedDartLibraries = const {}})
       : super(
             trackWidgetCreation: trackWidgetCreation,
             enableNullSafety: enableNullSafety);
diff --git a/pkg/kernel/lib/testing/type_parser.dart b/pkg/kernel/lib/testing/type_parser.dart
index d0aecd34521..be334a52ab5 100644
--- a/pkg/kernel/lib/testing/type_parser.dart
+++ b/pkg/kernel/lib/testing/type_parser.dart
@@ -328,7 +328,7 @@ class Token {
 
   Token? next;
 
-  Token(this.charOffset, this.text, {this.isIdentifier: false});
+  Token(this.charOffset, this.text, {this.isIdentifier = false});
 
   bool get isEof => text == null;
 }
diff --git a/pkg/kernel/lib/text/ast_to_text.dart b/pkg/kernel/lib/text/ast_to_text.dart
index cc844a6b93f..03819d26025 100644
--- a/pkg/kernel/lib/text/ast_to_text.dart
+++ b/pkg/kernel/lib/text/ast_to_text.dart
@@ -297,8 +297,8 @@ class Printer extends Visitor<void> with VisitorVoidMixin {
 
   Printer(this.sink,
       {NameSystem? syntheticNames,
-      this.showOffsets: false,
-      this.showMetadata: false,
+      this.showOffsets = false,
+      this.showMetadata = false,
       this.importTable,
       this.annotator,
       this.metadata})
@@ -763,7 +763,7 @@ class Printer extends Visitor<void> with VisitorVoidMixin {
   }
 
   void writeFunction(FunctionNode function,
-      {name, List<Initializer>? initializers, bool terminateLine: true}) {
+      {name, List<Initializer>? initializers, bool terminateLine = true}) {
     if (name is String) {
       writeWord(name);
     } else if (name is Name) {
@@ -823,7 +823,7 @@ class Printer extends Visitor<void> with VisitorVoidMixin {
     }
   }
 
-  void writeFunctionBody(Statement body, {bool terminateLine: true}) {
+  void writeFunctionBody(Statement body, {bool terminateLine = true}) {
     if (body is Block && body.statements.isEmpty) {
       ensureSpace();
       writeSymbol('{}');
@@ -942,7 +942,7 @@ class Printer extends Visitor<void> with VisitorVoidMixin {
   }
 
   void writeList<T>(Iterable<T> nodes, void callback(T x),
-      {String separator: ','}) {
+      {String separator = ','}) {
     bool first = true;
     for (T node in nodes) {
       if (first) {
@@ -1080,7 +1080,8 @@ class Printer extends Visitor<void> with VisitorVoidMixin {
     }
   }
 
-  void writeAnnotationList(List<Expression> nodes, {bool separateLines: true}) {
+  void writeAnnotationList(List<Expression> nodes,
+      {bool separateLines = true}) {
     for (Expression node in nodes) {
       if (separateLines) {
         writeIndentation();
@@ -2442,7 +2443,7 @@ class Printer extends Visitor<void> with VisitorVoidMixin {
   }
 
   void writeVariableDeclaration(VariableDeclaration node,
-      {bool useVarKeyword: false}) {
+      {bool useVarKeyword = false}) {
     if (showOffsets) writeWord("[${node.fileOffset}]");
     if (showMetadata) writeMetadata(node);
     writeAnnotationList(node.annotations, separateLines: false);
diff --git a/pkg/kernel/lib/transformations/track_widget_constructor_locations.dart b/pkg/kernel/lib/transformations/track_widget_constructor_locations.dart
index 85e700fe98b..736060b81f6 100644
--- a/pkg/kernel/lib/transformations/track_widget_constructor_locations.dart
+++ b/pkg/kernel/lib/transformations/track_widget_constructor_locations.dart
@@ -205,7 +205,7 @@ class _WidgetCallSiteTransformer extends Transformer {
 
   void _addLocationArgument(
       InvocationExpression node, FunctionNode function, Class constructedClass,
-      {bool isConst: false}) {
+      {bool isConst = false}) {
     _maybeAddCreationLocationArgument(
       node.arguments,
       function,
@@ -233,7 +233,7 @@ class _WidgetCallSiteTransformer extends Transformer {
     InvocationExpression node,
     FunctionNode function,
     Class constructedClass, {
-    bool isConst: false,
+    bool isConst = false,
   }) {
     // For factory constructors we need to use the location specified as an
     // argument to the factory constructor rather than the location
diff --git a/pkg/kernel/lib/type_algebra.dart b/pkg/kernel/lib/type_algebra.dart
index 35f897700d9..ff6c7cdba53 100644
--- a/pkg/kernel/lib/type_algebra.dart
+++ b/pkg/kernel/lib/type_algebra.dart
@@ -294,7 +294,7 @@ abstract class Substitution {
   /// Returns the substitution for [parameter]
   DartType? getSubstitute(TypeParameter parameter, bool upperBound);
 
-  DartType substituteType(DartType node, {bool contravariant: false}) {
+  DartType substituteType(DartType node, {bool contravariant = false}) {
     return new _TopSubstitutor(this, contravariant).visit(node);
   }
 
@@ -394,7 +394,7 @@ class _NullSubstitution extends Substitution {
   }
 
   @override
-  DartType substituteType(DartType node, {bool contravariant: false}) => node;
+  DartType substituteType(DartType node, {bool contravariant = false}) => node;
 
   @override
   Supertype substituteSupertype(Supertype node) => node;
diff --git a/pkg/kernel/lib/type_checker.dart b/pkg/kernel/lib/type_checker.dart
index 6116e0efac7..ee6c7457b4c 100644
--- a/pkg/kernel/lib/type_checker.dart
+++ b/pkg/kernel/lib/type_checker.dart
@@ -22,7 +22,7 @@ abstract class TypeChecker {
   Library? currentLibrary;
   InterfaceType? currentThisType;
 
-  TypeChecker(this.coreTypes, this.hierarchy, {this.ignoreSdk: true})
+  TypeChecker(this.coreTypes, this.hierarchy, {this.ignoreSdk = true})
       : environment = new TypeEnvironment(coreTypes, hierarchy);
 
   void checkComponent(Component component) {
@@ -299,7 +299,7 @@ class TypeCheckingVisitor
   }
 
   DartType handleCall(Arguments arguments, DartType functionType,
-      {Substitution receiver: Substitution.empty,
+      {Substitution receiver = Substitution.empty,
       List<TypeParameter>? typeParameters}) {
     if (functionType is FunctionType) {
       typeParameters ??= functionType.typeParameters;
diff --git a/pkg/kernel/lib/type_environment.dart b/pkg/kernel/lib/type_environment.dart
index aa061996839..280651db552 100644
--- a/pkg/kernel/lib/type_environment.dart
+++ b/pkg/kernel/lib/type_environment.dart
@@ -152,7 +152,7 @@ abstract class TypeEnvironment extends Types {
   /// True if [member] is a binary operator whose return type is defined by
   /// the both operand types.
   bool isSpecialCasedBinaryOperator(Procedure member,
-      {bool isNonNullableByDefault: false}) {
+      {bool isNonNullableByDefault = false}) {
     if (isNonNullableByDefault) {
       Class? class_ = member.enclosingClass;
       // TODO(johnniwinther): Do we need to recognize backend implementation
@@ -184,7 +184,7 @@ abstract class TypeEnvironment extends Types {
   /// True if [member] is a ternary operator whose return type is defined by
   /// the least upper bound of the operand types.
   bool isSpecialCasedTernaryOperator(Procedure member,
-      {bool isNonNullableByDefault: false}) {
+      {bool isNonNullableByDefault = false}) {
     if (isNonNullableByDefault) {
       Class? class_ = member.enclosingClass;
       if (class_ == coreTypes.intClass || class_ == coreTypes.numClass) {
@@ -199,7 +199,7 @@ abstract class TypeEnvironment extends Types {
   /// (see [isSpecialCasedBinaryOperator]) given the static type of the
   /// operands.
   DartType getTypeOfSpecialCasedBinaryOperator(DartType type1, DartType type2,
-      {bool isNonNullableByDefault: false}) {
+      {bool isNonNullableByDefault = false}) {
     if (isNonNullableByDefault) {
       // Let e be an expression of one of the forms e1 + e2, e1 - e2, e1 * e2,
       // e1 % e2 or e1.remainder(e2), where the static type of e1 is a non-Never
@@ -303,7 +303,7 @@ abstract class TypeEnvironment extends Types {
   ///
   /// If multiple members with that name are inherited and not overridden, the
   /// member from the first declared supertype is returned.
-  Member? getInterfaceMember(Class cls, Name name, {bool setter: false});
+  Member? getInterfaceMember(Class cls, Name name, {bool setter = false});
 }
 
 /// Tri-state logical result of a nullability-aware subtype check.
diff --git a/pkg/kernel/lib/verifier.dart b/pkg/kernel/lib/verifier.dart
index a8732e7dc16..4ab6bcb9e35 100644
--- a/pkg/kernel/lib/verifier.dart
+++ b/pkg/kernel/lib/verifier.dart
@@ -9,7 +9,9 @@ import 'transformations/flags.dart';
 import 'type_environment.dart' show StatefulStaticTypeContext, TypeEnvironment;
 
 void verifyComponent(Component component,
-    {bool? isOutline, bool? afterConst, bool constantsAreAlwaysInlined: true}) {
+    {bool? isOutline,
+    bool? afterConst,
+    bool constantsAreAlwaysInlined = true}) {
   VerifyingVisitor.check(component,
       isOutline: isOutline,
       afterConst: afterConst,
diff --git a/pkg/kernel/test/binary_bench.dart b/pkg/kernel/test/binary_bench.dart
index 69043b91b5b..992cb7cf64f 100644
--- a/pkg/kernel/test/binary_bench.dart
+++ b/pkg/kernel/test/binary_bench.dart
@@ -51,7 +51,7 @@ void main(List<String> args) async {
 const warmupIterations = 100;
 const benchmarkIterations = 50;
 
-void _benchmarkAstFromBinary(Uint8List bytes, {bool eager: true}) {
+void _benchmarkAstFromBinary(Uint8List bytes, {bool eager = true}) {
   final sw = new Stopwatch()..start();
   _fromBinary(bytes, eager: eager);
   final coldRunUs = sw.elapsedMicroseconds;
@@ -171,7 +171,7 @@ bool _parseArgs(List<String> args) {
   return true;
 }
 
-Component _fromBinary(List<int> bytes, {eager: true}) {
+Component _fromBinary(List<int> bytes, {eager = true}) {
   var component = new Component();
   new BinaryBuilder(bytes, filename: 'filename', disableLazyReading: eager)
       .readSingleFileComponent(component);
diff --git a/pkg/kernel/test/class_hierarchy_basic.dart b/pkg/kernel/test/class_hierarchy_basic.dart
index 26bf08f9581..032296ae103 100644
--- a/pkg/kernel/test/class_hierarchy_basic.dart
+++ b/pkg/kernel/test/class_hierarchy_basic.dart
@@ -221,12 +221,12 @@ class BasicClassHierarchy implements ClassHierarchy {
   }
 
   @override
-  Member? getDispatchTarget(Class class_, Name name, {bool setter: false}) {
+  Member? getDispatchTarget(Class class_, Name name, {bool setter = false}) {
     return setter ? setters[class_]![name] : gettersAndCalls[class_]![name];
   }
 
   @override
-  List<Member> getDispatchTargets(Class class_, {bool setters: false}) {
+  List<Member> getDispatchTargets(Class class_, {bool setters = false}) {
     return setters
         ? this.setters[class_]!.values.toList()
         : gettersAndCalls[class_]!.values.toList();
@@ -237,12 +237,12 @@ class BasicClassHierarchy implements ClassHierarchy {
   }
 
   @override
-  Member? getInterfaceMember(Class class_, Name name, {bool setter: false}) {
+  Member? getInterfaceMember(Class class_, Name name, {bool setter = false}) {
     return tryFirst(getInterfaceMembersByName(class_, name, setter: setter));
   }
 
   Iterable<Member> getInterfaceMembersByName(Class class_, Name name,
-      {bool setter: false}) {
+      {bool setter = false}) {
     var iterable = setter
         ? interfaceSetters[class_]![name]
         : interfaceGettersAndCalls[class_]![name];
@@ -250,7 +250,7 @@ class BasicClassHierarchy implements ClassHierarchy {
   }
 
   @override
-  List<Member> getInterfaceMembers(Class class_, {bool setters: false}) {
+  List<Member> getInterfaceMembers(Class class_, {bool setters = false}) {
     return setters
         ? interfaceSetters[class_]!.values.expand((x) => x).toList()
         : interfaceGettersAndCalls[class_]!.values.expand((x) => x).toList();
diff --git a/pkg/kernel/test/class_hierarchy_test.dart b/pkg/kernel/test/class_hierarchy_test.dart
index 14a5143d542..d513af80bb0 100644
--- a/pkg/kernel/test/class_hierarchy_test.dart
+++ b/pkg/kernel/test/class_hierarchy_test.dart
@@ -357,7 +357,7 @@ class H extends self::G implements self::C, self::A {}
   }
 
   Procedure newEmptyGetter(String name,
-      {DartType returnType: const DynamicType(), bool isAbstract: false}) {
+      {DartType returnType = const DynamicType(), bool isAbstract = false}) {
     var body =
         isAbstract ? null : new Block([new ReturnStatement(new NullLiteral())]);
     return new Procedure(new Name(name), ProcedureKind.Getter,
@@ -365,7 +365,7 @@ class H extends self::G implements self::C, self::A {}
         fileUri: library.fileUri);
   }
 
-  Procedure newEmptyMethod(String name, {bool isAbstract: false}) {
+  Procedure newEmptyMethod(String name, {bool isAbstract = false}) {
     var body = isAbstract ? null : new Block([]);
     return new Procedure(new Name(name), ProcedureKind.Method,
         new FunctionNode(body, returnType: const VoidType()),
@@ -373,7 +373,7 @@ class H extends self::G implements self::C, self::A {}
   }
 
   Procedure newEmptySetter(String name,
-      {bool isAbstract: false, DartType type: const DynamicType()}) {
+      {bool isAbstract = false, DartType type = const DynamicType()}) {
     var body = isAbstract ? null : new Block([]);
     return new Procedure(
         new Name(name),
diff --git a/pkg/kernel/test/type_hashcode_test.dart b/pkg/kernel/test/type_hashcode_test.dart
index c232443c214..fe1325349d6 100644
--- a/pkg/kernel/test/type_hashcode_test.dart
+++ b/pkg/kernel/test/type_hashcode_test.dart
@@ -70,13 +70,13 @@ class TestCase {
 }
 
 TestCase successCase(String type1, String type2, Map<String, String?> expected,
-    {bool debug: false}) {
+    {bool debug = false}) {
   return new TestCase.success(type1, type2, expected);
 }
 
 TestCase failureCase(
     String type1, String type2, List<String> quantifiedVariables,
-    {bool debug: false}) {
+    {bool debug = false}) {
   return new TestCase.fail(type1, type2, quantifiedVariables);
 }
 
diff --git a/pkg/kernel/tool/smoke_test_quick.dart b/pkg/kernel/tool/smoke_test_quick.dart
index a6969ac961f..75c8235889d 100644
--- a/pkg/kernel/tool/smoke_test_quick.dart
+++ b/pkg/kernel/tool/smoke_test_quick.dart
@@ -19,7 +19,7 @@ void main(List<String> args) async {
 }
 
 Future<void> run(String script, List<String> scriptArguments,
-    {bool filter: true}) async {
+    {bool filter = true}) async {
   List<String> arguments = [];
   arguments.add("$script");
   arguments.addAll(scriptArguments);
diff --git a/pkg/vm/bin/kernel_service.dart b/pkg/vm/bin/kernel_service.dart
index f6194846c08..e3dcfc51d52 100644
--- a/pkg/vm/bin/kernel_service.dart
+++ b/pkg/vm/bin/kernel_service.dart
@@ -180,14 +180,14 @@ abstract class Compiler {
   late final CompilerOptions options;
 
   Compiler(this.isolateGroupId, this.fileSystem, this.platformKernelPath,
-      {this.enableAsserts: false,
-      this.nullSafety: kNullSafetyOptionUnspecified,
-      this.experimentalFlags: null,
-      this.supportCodeCoverage: false,
-      this.supportHotReload: false,
-      this.packageConfig: null,
-      this.invocationModes: '',
-      this.verbosityLevel: Verbosity.defaultValue,
+      {this.enableAsserts = false,
+      this.nullSafety = kNullSafetyOptionUnspecified,
+      this.experimentalFlags = null,
+      this.supportCodeCoverage = false,
+      this.supportHotReload = false,
+      this.packageConfig = null,
+      this.invocationModes = '',
+      this.verbosityLevel = Verbosity.defaultValue,
       required this.enableMirrors}) {
     Uri? packagesUri = null;
     final packageConfig = this.packageConfig ?? Platform.packageConfig;
@@ -295,12 +295,12 @@ class IncrementalCompilerWrapper extends Compiler {
 
   IncrementalCompilerWrapper(
       int isolateGroupId, FileSystem fileSystem, Uri? platformKernelPath,
-      {bool enableAsserts: false,
-      int nullSafety: kNullSafetyOptionUnspecified,
+      {bool enableAsserts = false,
+      int nullSafety = kNullSafetyOptionUnspecified,
       List<String>? experimentalFlags,
       String? packageConfig,
-      String invocationModes: '',
-      String verbosityLevel: Verbosity.defaultValue,
+      String invocationModes = '',
+      String verbosityLevel = Verbosity.defaultValue,
       required bool enableMirrors})
       : super(isolateGroupId, fileSystem, platformKernelPath,
             enableAsserts: enableAsserts,
@@ -318,10 +318,10 @@ class IncrementalCompilerWrapper extends Compiler {
       int isolateGroupId,
       FileSystem fileSystem,
       Uri? platformKernelPath,
-      {bool enableAsserts: false,
+      {bool enableAsserts = false,
       List<String>? experimentalFlags,
       String? packageConfig,
-      String invocationModes: '',
+      String invocationModes = '',
       required bool enableMirrors}) {
     IncrementalCompilerWrapper result = IncrementalCompilerWrapper(
         isolateGroupId, fileSystem, platformKernelPath,
@@ -388,13 +388,13 @@ class SingleShotCompilerWrapper extends Compiler {
 
   SingleShotCompilerWrapper(
       int isolateGroupId, FileSystem fileSystem, Uri platformKernelPath,
-      {this.requireMain: false,
-      bool enableAsserts: false,
-      int nullSafety: kNullSafetyOptionUnspecified,
+      {this.requireMain = false,
+      bool enableAsserts = false,
+      int nullSafety = kNullSafetyOptionUnspecified,
       List<String>? experimentalFlags,
       String? packageConfig,
-      String invocationModes: '',
-      String verbosityLevel: Verbosity.defaultValue,
+      String invocationModes = '',
+      String verbosityLevel = Verbosity.defaultValue,
       required bool enableMirrors})
       : super(isolateGroupId, fileSystem, platformKernelPath,
             enableAsserts: enableAsserts,
@@ -433,14 +433,14 @@ IncrementalCompilerWrapper? lookupIncrementalCompiler(int isolateGroupId) {
 
 Future<Compiler> lookupOrBuildNewIncrementalCompiler(int isolateGroupId,
     List sourceFiles, Uri platformKernelPath, List<int>? platformKernel,
-    {bool enableAsserts: false,
-    int nullSafety: kNullSafetyOptionUnspecified,
+    {bool enableAsserts = false,
+    int nullSafety = kNullSafetyOptionUnspecified,
     List<String>? experimentalFlags,
     String? packageConfig,
     String? multirootFilepaths,
     String? multirootScheme,
-    String invocationModes: '',
-    String verbosityLevel: Verbosity.defaultValue,
+    String invocationModes = '',
+    String verbosityLevel = Verbosity.defaultValue,
     required bool enableMirrors}) async {
   IncrementalCompilerWrapper? compiler =
       lookupIncrementalCompiler(isolateGroupId);
diff --git a/pkg/vm/lib/incremental_compiler.dart b/pkg/vm/lib/incremental_compiler.dart
index 6f109b36bf3..79a90443884 100644
--- a/pkg/vm/lib/incremental_compiler.dart
+++ b/pkg/vm/lib/incremental_compiler.dart
@@ -37,7 +37,7 @@ class IncrementalCompiler {
   IncrementalCompilerResult? get lastKnownGoodResult => _lastKnownGood;
 
   IncrementalCompiler(this._compilerOptions, this._entryPoints,
-      {this.initializeFromDillUri, bool incrementalSerialization: true})
+      {this.initializeFromDillUri, bool incrementalSerialization = true})
       : forExpressionCompilationOnly = false {
     if (incrementalSerialization) {
       incrementalSerializer = new IncrementalSerializer();
diff --git a/pkg/vm/lib/kernel_front_end.dart b/pkg/vm/lib/kernel_front_end.dart
index 7ffdc7fc5bb..d3ab0faae7a 100644
--- a/pkg/vm/lib/kernel_front_end.dart
+++ b/pkg/vm/lib/kernel_front_end.dart
@@ -362,18 +362,18 @@ class KernelCompilationResults {
 ///
 Future<KernelCompilationResults> compileToKernel(
     Uri source, CompilerOptions options,
-    {List<Uri> additionalSources: const <Uri>[],
-    bool includePlatform: false,
-    List<String> deleteToStringPackageUris: const <String>[],
-    bool aot: false,
-    bool useGlobalTypeFlowAnalysis: false,
-    bool useRapidTypeAnalysis: true,
+    {List<Uri> additionalSources = const <Uri>[],
+    bool includePlatform = false,
+    List<String> deleteToStringPackageUris = const <String>[],
+    bool aot = false,
+    bool useGlobalTypeFlowAnalysis = false,
+    bool useRapidTypeAnalysis = true,
     required Map<String, String> environmentDefines,
-    bool enableAsserts: true,
-    bool useProtobufTreeShakerV2: false,
-    bool minimalKernel: false,
-    bool treeShakeWriteOnlyFields: false,
-    String? fromDillFile: null}) async {
+    bool enableAsserts = true,
+    bool useProtobufTreeShakerV2 = false,
+    bool minimalKernel = false,
+    bool treeShakeWriteOnlyFields = false,
+    String? fromDillFile = null}) async {
   // Replace error handler to detect if there are compilation errors.
   final errorDetector =
       new ErrorDetector(previousErrorHandler: options.onDiagnostic);
@@ -435,7 +435,7 @@ Future<KernelCompilationResults> compileToKernel(
 
 Set<Library> createLoadedLibrariesSet(
     List<Component>? loadedComponents, Component? sdkComponent,
-    {bool includePlatform: false}) {
+    {bool includePlatform = false}) {
   final Set<Library> loadedLibraries = {};
   if (loadedComponents != null) {
     for (Component c in loadedComponents) {
@@ -465,9 +465,9 @@ Future runGlobalTransformations(
     bool enableAsserts,
     bool useProtobufTreeShakerV2,
     ErrorDetector errorDetector,
-    {bool minimalKernel: false,
-    bool treeShakeWriteOnlyFields: false,
-    bool useRapidTypeAnalysis: true}) async {
+    {bool minimalKernel = false,
+    bool treeShakeWriteOnlyFields = false,
+    bool useRapidTypeAnalysis = true}) async {
   assert(!target.flags.supportMirrors);
   if (errorDetector.hasCompilationErrors) return;
 
diff --git a/pkg/vm/lib/metadata/inferred_type.dart b/pkg/vm/lib/metadata/inferred_type.dart
index 24321956dc0..4c02c83ad78 100644
--- a/pkg/vm/lib/metadata/inferred_type.dart
+++ b/pkg/vm/lib/metadata/inferred_type.dart
@@ -36,8 +36,8 @@ class InferredType {
   InferredType(
       Class? concreteClass, bool nullable, bool isInt, Constant? constantValue,
       {List<DartType?>? exactTypeArguments,
-      bool skipCheck: false,
-      bool receiverNotInt: false})
+      bool skipCheck = false,
+      bool receiverNotInt = false})
       : this._byReference(
             concreteClass?.reference,
             constantValue,
diff --git a/pkg/vm/lib/metadata/procedure_attributes.dart b/pkg/vm/lib/metadata/procedure_attributes.dart
index da78cab8552..4de309ce8a7 100644
--- a/pkg/vm/lib/metadata/procedure_attributes.dart
+++ b/pkg/vm/lib/metadata/procedure_attributes.dart
@@ -19,13 +19,13 @@ class ProcedureAttributesMetadata {
   final int getterSelectorId;
 
   const ProcedureAttributesMetadata(
-      {this.methodOrSetterCalledDynamically: true,
-      this.getterCalledDynamically: true,
-      this.hasThisUses: true,
-      this.hasNonThisUses: true,
-      this.hasTearOffUses: true,
-      this.methodOrSetterSelectorId: kInvalidSelectorId,
-      this.getterSelectorId: kInvalidSelectorId});
+      {this.methodOrSetterCalledDynamically = true,
+      this.getterCalledDynamically = true,
+      this.hasThisUses = true,
+      this.hasNonThisUses = true,
+      this.hasTearOffUses = true,
+      this.methodOrSetterSelectorId = kInvalidSelectorId,
+      this.getterSelectorId = kInvalidSelectorId});
 
   const ProcedureAttributesMetadata.noDynamicUses()
       : this(
diff --git a/pkg/vm/lib/target/vm.dart b/pkg/vm/lib/target/vm.dart
index 74c4842225b..7fc592615cc 100644
--- a/pkg/vm/lib/target/vm.dart
+++ b/pkg/vm/lib/target/vm.dart
@@ -271,16 +271,16 @@ class VmTarget extends Target {
   @override
   Expression instantiateNoSuchMethodError(CoreTypes coreTypes,
       Expression receiver, String name, Arguments arguments, int offset,
-      {bool isMethod: false,
-      bool isGetter: false,
-      bool isSetter: false,
-      bool isField: false,
-      bool isLocalVariable: false,
-      bool isDynamic: false,
-      bool isSuper: false,
-      bool isStatic: false,
-      bool isConstructor: false,
-      bool isTopLevel: false}) {
+      {bool isMethod = false,
+      bool isGetter = false,
+      bool isSetter = false,
+      bool isField = false,
+      bool isLocalVariable = false,
+      bool isDynamic = false,
+      bool isSuper = false,
+      bool isStatic = false,
+      bool isConstructor = false,
+      bool isTopLevel = false}) {
     int type = _invocationType(
         isMethod: isMethod,
         isGetter: isGetter,
@@ -302,16 +302,16 @@ class VmTarget extends Target {
   }
 
   int _invocationType(
-      {bool isMethod: false,
-      bool isGetter: false,
-      bool isSetter: false,
-      bool isField: false,
-      bool isLocalVariable: false,
-      bool isDynamic: false,
-      bool isSuper: false,
-      bool isStatic: false,
-      bool isConstructor: false,
-      bool isTopLevel: false}) {
+      {bool isMethod = false,
+      bool isGetter = false,
+      bool isSetter = false,
+      bool isField = false,
+      bool isLocalVariable = false,
+      bool isDynamic = false,
+      bool isSuper = false,
+      bool isStatic = false,
+      bool isConstructor = false,
+      bool isTopLevel = false}) {
     // This is copied from [_InvocationMirror](
     // ../../../../../../runtime/lib/invocation_mirror_patch.dart).
 
diff --git a/pkg/vm/lib/transformations/ffi/common.dart b/pkg/vm/lib/transformations/ffi/common.dart
index 6811ec87bff..6a47fa4d8f2 100644
--- a/pkg/vm/lib/transformations/ffi/common.dart
+++ b/pkg/vm/lib/transformations/ffi/common.dart
@@ -1118,7 +1118,7 @@ class FfiTransformer extends Transformer {
 
   void ensureNativeTypeToDartType(
       DartType nativeType, DartType dartType, TreeNode reportErrorOn,
-      {bool allowHandle: false}) {
+      {bool allowHandle = false}) {
     final DartType correspondingDartType = convertNativeTypeToDartType(
         nativeType,
         allowCompounds: true,
@@ -1145,8 +1145,8 @@ class FfiTransformer extends Transformer {
   }
 
   void ensureNativeTypeValid(DartType nativeType, TreeNode reportErrorOn,
-      {bool allowHandle: false,
-      bool allowCompounds: false,
+      {bool allowHandle = false,
+      bool allowCompounds = false,
       bool allowInlineArray = false}) {
     if (!_nativeTypeValid(nativeType,
         allowCompounds: allowCompounds,
@@ -1165,7 +1165,7 @@ class FfiTransformer extends Transformer {
   /// The Dart type system does not enforce that NativeFunction return and
   /// parameter types are only NativeTypes, so we need to check this.
   bool _nativeTypeValid(DartType nativeType,
-      {bool allowCompounds: false,
+      {bool allowCompounds = false,
       bool allowHandle = false,
       bool allowInlineArray = false}) {
     return convertNativeTypeToDartType(nativeType,
diff --git a/pkg/vm/lib/transformations/ffi/use_sites.dart b/pkg/vm/lib/transformations/ffi/use_sites.dart
index f95320eb38e..de3c3c75330 100644
--- a/pkg/vm/lib/transformations/ffi/use_sites.dart
+++ b/pkg/vm/lib/transformations/ffi/use_sites.dart
@@ -615,7 +615,7 @@ mixin _FfiUseSiteTransformer on FfiTransformer {
   ///   #array._typedDataBase, #offset, value._typedDataBase, 0, #elementSize)
   /// ```
   Expression _replaceArrayArrayElemAt(StaticInvocation node,
-      {bool setter: false}) {
+      {bool setter = false}) {
     final dartType = node.arguments.types[0];
     final elementType = arraySingleElementType(dartType as InterfaceType);
 
diff --git a/pkg/vm/lib/transformations/type_flow/analysis.dart b/pkg/vm/lib/transformations/type_flow/analysis.dart
index 835dd32b915..224988b9eab 100644
--- a/pkg/vm/lib/transformations/type_flow/analysis.dart
+++ b/pkg/vm/lib/transformations/type_flow/analysis.dart
@@ -1110,7 +1110,8 @@ class GenericInterfacesInfoImpl implements GenericInterfacesInfo {
         RuntimeTypeTranslatorImpl.forClosedTypes(coreTypes, this);
   }
 
-  List<DartType> flattenedTypeArgumentsFor(Class klass, {bool useCache: true}) {
+  List<DartType> flattenedTypeArgumentsFor(Class klass,
+      {bool useCache = true}) {
     final cached = useCache ? cachedFlattenedTypeArgs[klass] : null;
     if (cached != null) return cached;
 
@@ -1699,7 +1700,7 @@ class TypeFlowAnalysis implements EntryPointsListener, CallHandler {
 
   @override
   Type applyCall(Call? callSite, Selector selector, Args<Type> args,
-      {bool isResultUsed: true, bool processImmediately: true}) {
+      {bool isResultUsed = true, bool processImmediately = true}) {
     _Invocation invocation = _invocationsCache.getInvocation(selector, args);
 
     // Test if tracing is enabled to avoid expensive message formatting.
diff --git a/pkg/vm/lib/transformations/type_flow/summary.dart b/pkg/vm/lib/transformations/type_flow/summary.dart
index a30913884c9..479884152d8 100644
--- a/pkg/vm/lib/transformations/type_flow/summary.dart
+++ b/pkg/vm/lib/transformations/type_flow/summary.dart
@@ -622,9 +622,9 @@ class Summary {
   int calleeTime = 0;
 
   Summary(this.name,
-      {this.parameterCount: 0,
-      this.positionalParameterCount: 0,
-      this.requiredParameterCount: 0});
+      {this.parameterCount = 0,
+      this.positionalParameterCount = 0,
+      this.requiredParameterCount = 0});
 
   List<Statement> get statements => _statements;
 
diff --git a/pkg/vm/lib/transformations/type_flow/summary_collector.dart b/pkg/vm/lib/transformations/type_flow/summary_collector.dart
index 2a1ddd04148..7543814fe86 100644
--- a/pkg/vm/lib/transformations/type_flow/summary_collector.dart
+++ b/pkg/vm/lib/transformations/type_flow/summary_collector.dart
@@ -592,7 +592,7 @@ class SummaryCollector extends RecursiveResultVisitor<TypeExpr?> {
   }
 
   Summary createSummary(Member member,
-      {fieldSummaryType: FieldSummaryType.kInitializer}) {
+      {fieldSummaryType = FieldSummaryType.kInitializer}) {
     final String summaryName =
         "${member}${fieldSummaryType == FieldSummaryType.kFieldGuard ? " (guard)" : ""}";
     debugPrint("===== $summaryName =====");
@@ -884,7 +884,7 @@ class SummaryCollector extends RecursiveResultVisitor<TypeExpr?> {
   }
 
   Args<TypeExpr> _visitArguments(TypeExpr? receiver, Arguments arguments,
-      {bool passTypeArguments: false}) {
+      {bool passTypeArguments = false}) {
     final List<TypeExpr> args = <TypeExpr>[];
     if (passTypeArguments) {
       for (var type in arguments.types) {
@@ -917,7 +917,7 @@ class SummaryCollector extends RecursiveResultVisitor<TypeExpr?> {
 
   Parameter _declareParameter(
       String name, DartType? type, Expression? initializer,
-      {bool isReceiver: false}) {
+      {bool isReceiver = false}) {
     Type? staticType;
     if (type != null) {
       staticType = _typesBuilder.fromStaticType(type, !isReceiver);
diff --git a/pkg/vm/lib/transformations/type_flow/transformer.dart b/pkg/vm/lib/transformations/type_flow/transformer.dart
index 34e29dd84bf..89a6702a0a2 100644
--- a/pkg/vm/lib/transformations/type_flow/transformer.dart
+++ b/pkg/vm/lib/transformations/type_flow/transformer.dart
@@ -44,10 +44,10 @@ const bool kDumpClassHierarchy =
 Component transformComponent(
     Target target, CoreTypes coreTypes, Component component,
     {PragmaAnnotationParser? matcher,
-    bool treeShakeSignatures: true,
-    bool treeShakeWriteOnlyFields: true,
-    bool treeShakeProtobufs: false,
-    bool useRapidTypeAnalysis: true}) {
+    bool treeShakeSignatures = true,
+    bool treeShakeWriteOnlyFields = true,
+    bool treeShakeProtobufs = false,
+    bool useRapidTypeAnalysis = true}) {
   void ignoreAmbiguousSupertypes(Class cls, Supertype a, Supertype b) {}
   final hierarchy = new ClassHierarchy(component, coreTypes,
           onAmbiguousSupertypes: ignoreAmbiguousSupertypes)
@@ -337,7 +337,7 @@ class AnnotateKernel extends RecursiveVisitor {
   }
 
   InferredType? _convertType(Type type,
-      {bool skipCheck: false, bool receiverNotInt: false}) {
+      {bool skipCheck = false, bool receiverNotInt = false}) {
     Class? concreteClass;
     Constant? constantValue;
     bool isInt = false;
@@ -388,7 +388,7 @@ class AnnotateKernel extends RecursiveVisitor {
   }
 
   void _setInferredType(TreeNode node, Type type,
-      {bool skipCheck: false, bool receiverNotInt: false}) {
+      {bool skipCheck = false, bool receiverNotInt = false}) {
     final inferredType = _convertType(type,
         skipCheck: skipCheck, receiverNotInt: receiverNotInt);
     if (inferredType != null) {
@@ -725,7 +725,7 @@ class TreeShaker {
     this.typeFlowAnalysis,
     CoreTypes coreTypes,
     ClassHierarchy hierarchy, {
-    this.treeShakeWriteOnlyFields: true,
+    this.treeShakeWriteOnlyFields = true,
   }) : _finalizableTypes = new FinalizableTypes(
             coreTypes, typeFlowAnalysis.libraryIndex, hierarchy) {
     fieldMorpher = new FieldMorpher(this);
diff --git a/pkg/vm/test/common_test_utils.dart b/pkg/vm/test/common_test_utils.dart
index cadd34c3e84..7322d43f637 100644
--- a/pkg/vm/test/common_test_utils.dart
+++ b/pkg/vm/test/common_test_utils.dart
@@ -95,7 +95,8 @@ Future<Component> compileTestCaseToKernelProgram(Uri sourceUri,
 /// Extra libraries apart from the main library are passed to the front-end as
 /// additional dills, which places them last in the library list, causing them
 /// to have very high (and often changing) selector IDs.
-String kernelLibraryToString(Library library, {bool removeSelectorIds: false}) {
+String kernelLibraryToString(Library library,
+    {bool removeSelectorIds = false}) {
   final StringBuffer buffer = new StringBuffer();
   final printer = new Printer(buffer, showMetadata: true);
   printer.writeLibraryFile(library);
diff --git a/pkg/vm/test/incremental_compiler_test.dart b/pkg/vm/test/incremental_compiler_test.dart
index 83974c91b02..95435667a5e 100644
--- a/pkg/vm/test/incremental_compiler_test.dart
+++ b/pkg/vm/test/incremental_compiler_test.dart
@@ -157,8 +157,8 @@ main() {
   /// If [getAllSources] is false it will ask specifically for report
   /// (and thus hits) for "lib1.dart" only.
   Future<Set<int>> collectAndCheckCoverageData(int port, bool getAllSources,
-      {bool resume: true,
-      bool onGetAllVerifyCount: true,
+      {bool resume = true,
+      bool onGetAllVerifyCount = true,
       Set<int>? coverageForLines}) async {
     RemoteVm remoteVm = new RemoteVm(port);
 
diff --git a/pkg/vm/testcases/transformations/type_flow/transformer/const_default.lib.dart b/pkg/vm/testcases/transformations/type_flow/transformer/const_default.lib.dart
index 53f72f05280..d2ca97a5076 100644
--- a/pkg/vm/testcases/transformations/type_flow/transformer/const_default.lib.dart
+++ b/pkg/vm/testcases/transformations/type_flow/transformer/const_default.lib.dart
@@ -11,11 +11,11 @@ class Constant {
 }
 
 abstract class Interface {
-  Future<void> method({Constant c: Constant.a});
+  Future<void> method({Constant c = Constant.a});
   Future<void> method2();
 }
 
 class Class implements Interface {
-  Future<void> method({c: Constant.a}) async {}
+  Future<void> method({c = Constant.a}) async {}
   Future<void> method2() async {}
 }