Fixed various typos in a lot of files

Closes https://github.com/dart-lang/sdk/pull/49478

TEST=Manual

GitOrigin-RevId: f4c9c6869dfe73639295e86574a021523b3d374d
Change-Id: I134a97caed4eec59d70e9cbca16b7e9a472cf2c1
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/251902
Reviewed-by: Michael Thomsen <mit@google.com>
Commit-Queue: Alexander Thomas <athom@google.com>
Reviewed-by: Aske Simon Christensen <askesc@google.com>
Reviewed-by: Kevin Chisholm <kevinjchisholm@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>

.github/ISSUE_TEMPLATE/1_cherry_pick.yml

@@ -27,7 +27,7 @@ body:
     id: issue_description
     attributes:
       label: Issue Description
-      description: Brief description of the issue.  What is the issue? What platforms are the problems occuring on?
+      description: Brief description of the issue.  What is the issue? What platforms are the problems occurring on?
     validations:
       required: true
   - type: textarea

.mailmap

@@ -1,4 +1,4 @@
-# This file contains name to mail address mappings that are usefull
+# This file contains name to mail address mappings that are useful
 # for old svn based commits (to get nice names instead of mail in blame and
 # other tools)
 Adam Klein <adamk@google.com>

benchmarks/BigIntParsePrint/dart/BigIntParsePrint.dart

@@ -12,7 +12,7 @@ import 'package:fixnum/fixnum.dart';
 import 'native_version_dummy.dart'
     if (dart.library.js) 'native_version_javascript.dart';
 
-// Benckmark BigInt and Int64 formatting and parsing.
+// Benchmark BigInt and Int64 formatting and parsing.
 
 // A global sink that is used in the [check] method ensures that the results are
 // not optimized.
@@ -49,7 +49,7 @@ class Benchmark extends BenchmarkBase {
       if (b.bitLength < bits) {
         restartDelta += seed >> 20;
         restartDelta += BigInt.one;
-        // Restart from a slighly reduced seed to generate different numbers.
+        // Restart from a slightly reduced seed to generate different numbers.
         b = seed - restartDelta;
       }
       var string = b.toString();
@@ -310,7 +310,7 @@ void main() {
     selectFormatNativeBigIntBenchmark('JsBigInt.toString.4096.bits', 4096),
   ];
 
-  // Warm up all benchmarks to ensure consistent behavious of shared code.
+  // Warm up all benchmarks to ensure consistent behavior of shared code.
   benchmarks.forEach((bm) => bm()
     ..setup()
     ..run()

benchmarks/Richards/dart/Richards.dart

@@ -414,7 +414,7 @@ class HandlerTask extends Task {
 }
 
 /// A simple package of data that is manipulated by the tasks.  The exact layout
-/// of the payload data carried by a packet is not importaint, and neither is
+/// of the payload data carried by a packet is not important, and neither is
 /// the nature of the work performed on packets by the tasks. Besides carrying
 /// data, packets form linked lists and are hence used both as data and
 /// worklists.

benchmarks/Richards/dart2/Richards.dart

@@ -418,7 +418,7 @@ class HandlerTask extends Task {
 }
 
 /// A simple package of data that is manipulated by the tasks.  The exact layout
-/// of the payload data carried by a packet is not importaint, and neither is
+/// of the payload data carried by a packet is not important, and neither is
 /// the nature of the work performed on packets by the tasks. Besides carrying
 /// data, packets form linked lists and are hence used both as data and
 /// worklists.

benchmarks/Richards/javascript/Richards.js

@@ -497,7 +497,7 @@ var DATA_SIZE = 4;
 
 /**
  * A simple package of data that is manipulated by the tasks.  The exact layout
- * of the payload data carried by a packet is not importaint, and neither is the
+ * of the payload data carried by a packet is not important, and neither is the
  * nature of the work performed on packets by the tasks.
  *
  * Besides carrying data, packets form linked lists and are hence used both as

build/mac/change_mach_o_flags.py

@@ -121,7 +121,7 @@ def CheckedRead(file, count):
 
 
 def ReadUInt32(file, endian):
-    """Reads an unsinged 32-bit integer from the file-like |file| object,
+    """Reads an unsigned 32-bit integer from the file-like |file| object,
   treating it as having endianness specified by |endian| (per the |struct|
   module), and returns it as a number. Raises a MachOError if the proper
   length of data can't be read from |file|."""
@@ -160,7 +160,7 @@ def ReadFatArch(file):
 
 
 def WriteUInt32(file, uint32, endian):
-    """Writes |uint32| as an unsinged 32-bit integer to the file-like |file|
+    """Writes |uint32| as an unsigned 32-bit integer to the file-like |file|
   object, treating it as having endianness specified by |endian| (per the
   |struct| module)."""
 

pkg/_fe_analyzer_shared/test/macros/executor/simple_macro.dart

@@ -8,7 +8,7 @@ import 'package:_fe_analyzer_shared/src/macros/api.dart';
 
 /// A very simple macro that augments any declaration it is given, usually
 /// adding print statements and inlining values from the declaration object
-/// for comparision with expected values in tests.
+/// for comparison with expected values in tests.
 ///
 /// When applied to [MethodDeclaration]s there is some extra work that happens
 /// to validate the introspection APIs work as expected.

pkg/analysis_server/lib/lsp_protocol/protocol_generated.dart

@@ -306,7 +306,7 @@ typedef TextDocumentSignatureHelpResult = SignatureHelp?;
 
 /// Result for a request to resolve the type definition locations of a symbol at
 /// a given text document position. The request's parameter is of type
-/// TextDocumentPositioParams the response is of type Definition or a Thenable
+/// TextDocumentPositionParams the response is of type Definition or a Thenable
 /// that resolves to such.
 typedef TextDocumentTypeDefinitionResult
     = Either2<Definition, List<DefinitionLink>>?;
@@ -21955,7 +21955,7 @@ class PreviousResultId implements ToJsonable {
     );
   }
 
-  /// The URI for which the client knowns a result id.
+  /// The URI for which the client knows a result id.
   final DocumentUri uri;
 
   /// The value of the previous result id.

pkg/analyzer/lib/src/summary2/ast_binary_writer.dart

@@ -434,7 +434,7 @@ class AstBinaryWriter extends ThrowingAstVisitor<void> {
       }
     }
 
-    // TODO(scheglov) Dont write type, AKA separate true `int` and `double`?
+    // TODO(scheglov) Don't write type, AKA separate true `int` and `double`?
     _storeExpression(node);
   }
 

pkg/analyzer/lib/src/workspace/bazel_watcher.dart

@@ -432,7 +432,7 @@ abstract class PollTrigger {
 ///
 /// The idea here is to detect when Bazel finished running and use that to
 /// trigger polling. To detect that we use the `command.log` file that bazel
-/// contiuously updates as the build progresses. We find that file based on [1]:
+/// continuously updates as the build progresses. We find that file based on [1]:
 ///
 /// - In the workspace directory there should be a `bazel-out` symlink whose
 ///   target should be of the form:

pkg/async_helper/lib/async_helper.dart

@@ -89,7 +89,7 @@ Future<void> asyncTest(f()) {
   return f().then(asyncSuccess);
 }
 
-/// Verifies that the asyncronous [result] throws a [T].
+/// Verifies that the asynchronous [result] throws a [T].
 ///
 /// Fails if [result] completes with a value, or it completes with
 /// an error which is not a [T].

pkg/compiler/lib/src/elements/types.dart

@@ -2269,7 +2269,7 @@ abstract class DartTypes {
         type is FunctionTypeVariable && canAssignGenericFunctionTo(type.bound);
   }
 
-  /// Returns `true` if [type] occuring in a program with no sound null safety
+  /// Returns `true` if [type] occurring in a program with no sound null safety
   /// cannot accept `null` under sound rules.
   bool isNonNullableIfSound(DartType type) {
     if (type is DynamicType ||

pkg/compiler/lib/src/inferrer/powersets/powerset_bits.dart

@@ -523,7 +523,7 @@ class PowersetBitsDomain {
         // type and is maximal (i.e. instantiated to bounds), the typemask,
         // which is based on the class element, is still precise. We check
         // against Top for the parameter arguments since we don't have a
-        // convenient check for instantation to bounds.
+        // convenient check for instantiation to bounds.
         //
         // TODO(sra): Check arguments against bounds.
         // TODO(sra): Handle other variances.

pkg/compiler/lib/src/inferrer/type_system.dart

@@ -569,7 +569,7 @@ class TypeSystem {
     return _addPhi(node, variable, inputType, isTry);
   }
 
-  /// Simplies the phi representing [element] and of the type
+  /// Simplifies the phi representing [element] and of the type
   /// [phiType]. For example, if this phi has one incoming input, an
   /// implementation of this method could just return that incoming
   /// input type.

pkg/compiler/lib/src/inferrer/typemasks/masks.dart

@@ -352,7 +352,7 @@ class CommonMasks implements AbstractValueDomain {
         // type and is maximal (i.e. instantiated to bounds), the typemask,
         // which is based on the class element, is still precise. We check
         // against Top for the parameter arguments since we don't have a
-        // convenient check for instantation to bounds.
+        // convenient check for instantiation to bounds.
         //
         // TODO(sra): Check arguments against bounds.
         // TODO(sra): Handle other variances.

pkg/compiler/lib/src/io/position_information.dart

@@ -841,10 +841,10 @@ enum StepKind {
 
 /// Listener for the [JavaScriptTracer].
 abstract class TraceListener {
-  /// Called before [root] node is procesed by the [JavaScriptTracer].
+  /// Called before [root] node is processed by the [JavaScriptTracer].
   void onStart(js.Node root) {}
 
-  /// Called after [root] node has been procesed by the [JavaScriptTracer].
+  /// Called after [root] node has been processed by the [JavaScriptTracer].
   void onEnd(js.Node root) {}
 
   /// Called when a branch of the given [kind] is started. [value] is provided

pkg/compiler/lib/src/io/source_information.dart

@@ -66,7 +66,7 @@ abstract class SourceInformation extends JavaScriptNodeSourceInformation {
 /// Context information about inlined calls.
 ///
 /// This is associated with SourceInformation objects to be able to emit
-/// precise data about inlining that can then be used by defobuscation tools
+/// precise data about inlining that can then be used by deobfuscation tools
 /// when reconstructing a source stack from a production stack trace.
 class FrameContext {
   static const String tag = 'frame-context';

pkg/compiler/lib/src/ir/scope_visitor.dart

@@ -118,7 +118,7 @@ class ScopeModelBuilder extends ir.Visitor<EvaluationComplexity>
       assert(node is ir.Procedure || node is ir.Constructor);
       if (!(node is ir.Procedure && node.isRedirectingFactory)) {
         // Skip redirecting factories: they contain invalid expressions only
-        // used to suppport internal CFE modular compilation.
+        // used to support internal CFE modular compilation.
         node.accept(this);
       }
     }

pkg/compiler/lib/src/js/placeholder_safety.dart

@@ -10,7 +10,7 @@ typedef PositionPredicate = bool Function(int position);
 
 /// PlaceholderSafetyAnalysis determines which placeholders in a JavaScript
 /// template may be replaced with an arbitrary expression. Placeholders may be
-/// replaced with an arbitrary expression providied the template ensures the
+/// replaced with an arbitrary expression provided the template ensures the
 /// placeholders are evaluated in the same left-to-right order with no
 /// additional effects interleaved.
 ///

pkg/compiler/lib/src/js_backend/frequency_assignment.dart

@@ -176,7 +176,7 @@ class _Pool {
 /// entities are identified by integers.
 class _Cohort {
   _Cohort? next; // Next cohort in decreasing frequency.
-  final int count; // This is the cohort of items occuring [count] times.
+  final int count; // This is the cohort of items occurring [count] times.
   Set<int> unassigned = Set();
 
   _Cohort(this.count);

pkg/compiler/lib/src/js_backend/string_reference.dart

@@ -10,7 +10,7 @@
 ///     foo1() => 'A very long string';
 ///
 /// might be compiled to something like the following, where StringReference1 is
-/// assocatied with the string `'A very long string'`.
+/// associated with the string `'A very long string'`.
 ///
 ///     foo1: function() {
 ///       return StringReference1;
@@ -77,7 +77,7 @@ class StringReferencePolicy {
   // (hot, cold, execute-once, etc).
   static const int shortestSharedLength = 40;
 
-  // TODO(sra): Add policy for huge non-shared strings, strings occuring in
+  // TODO(sra): Add policy for huge non-shared strings, strings occurring in
   // run-once code, etc. Maybe make policy settings assignable for testing or
   // command-line configuration.
 }

pkg/compiler/lib/src/js_backend/type_reference.dart

@@ -390,7 +390,7 @@ class TypeReferenceFinalizerImpl implements TypeReferenceFinalizer {
       }
 
       // TODO(sra): There are other contexts that would be beneficial, e.g. a
-      // type reference occuring only in a throw expression.
+      // type reference occurring only in a throw expression.
 
       String suggestedName = _RecipeToIdentifier().run(referenceSet.recipe);
       if (usedNames.contains(suggestedName)) {

pkg/compiler/lib/src/js_model/type_recipe.dart

@@ -559,7 +559,7 @@ class _Substitution extends DartTypeSubstitutionVisitor<Null> {
     int count = _counts[variable] = (_counts[variable] ?? 0) + 1;
     if (count > 1) {
       // If the replacement is 'big', duplicating it can grow the term, perhaps
-      // exponentially given a sufficently pathological input.
+      // exponentially given a sufficiently pathological input.
       // TODO(sra): Fix exponential terms by encoding a DAG in recipes to avoid
       // linearization.
       if (replacement is FunctionType ||

pkg/compiler/tool/kernel_visitor/dart_html_metrics_visitor.dart

@@ -69,7 +69,7 @@ class MetricsVisitor extends RecursiveVisitor {
 
   @override
   void visitClass(Class node) {
-    // Dont want to add duplicate info.
+    // Don't want to add duplicate info.
     // When mixed, anonymous mixin class generated so we want to ignore.
     if (!node.isAnonymousMixin) {
       currentClass = node.name;

pkg/dartdev/lib/src/sdk.dart

@@ -114,7 +114,7 @@ class Runtime {
 
   static Runtime _createSingleton() {
     var versionString = Platform.version;
-    // Exepcted format: "version (channel) ..."
+    // Expected format: "version (channel) ..."
     var version = versionString;
     String? channel;
     var versionEnd = versionString.indexOf(' ');

pkg/frontend_server/lib/src/strong_components.dart

@@ -34,7 +34,7 @@ class StrongComponents {
   /// The Component that is being compiled.
   ///
   /// On incremental compiles, this will only contain the invalidated
-  /// lbraries.
+  /// libraries.
   final Component component;
 
   /// The libraries loaded from a dill file that should not be processed.

pkg/js/proposal.md

@@ -1370,7 +1370,7 @@ class MyDartClass extends TheirJSClass {
   final int x = 1;
   int y, z;
   factory MyDartClass(int y, int z) {
-    // super constructpr parameters passed here?
+    // super constructor parameters passed here?
     var self = createJS<MyDartClass>(); 
     self.y = y;
     self.z = z;

pkg/kernel/lib/transformations/track_widget_constructor_locations.dart

@@ -433,7 +433,7 @@ class WidgetCreatorTracker {
   ///
   /// Upon transformation the [changedStructureNotifier] (if provided) is used
   /// to notify the listener that  that class hierarchy of certain classes has
-  /// changed. This is neccesary for instance when doing an incremental
+  /// changed. This is necessary for instance when doing an incremental
   /// compilation where the class hierarchy is kept between compiles and thus
   /// has to be kept up to date.
   void transform(Component module, List<Library> libraries,

pkg/modular_test/lib/src/pipeline.dart

@@ -4,7 +4,7 @@
 
 /// Abstraction for a compilation pipeline.
 ///
-/// A pipeline defines how modular steps are excuted and ensures that a step
+/// A pipeline defines how modular steps are executed and ensures that a step
 /// only has access to the data it declares.
 ///
 /// The abstract implementation validates how the data is declared, and the
@@ -42,7 +42,7 @@ class ModularStep {
   /// Whether this step is only executed on the main module.
   final bool onlyOnMain;
 
-  /// Whether this step is only exceuted on the SDK.
+  /// Whether this step is only executed on the SDK.
   final bool onlyOnSdk;
 
   /// Whether this step is not executed on the SDK.

pkg/nnbd_migration/test/api_test.dart

@@ -111,7 +111,7 @@ abstract class _ProvisionalApiTestBase extends AbstractContextTest {
     }
   }
 
-  /// Verifies that migraiton of the single file with the given [content]
+  /// Verifies that migration of the single file with the given [content]
   /// produces the [expected] output.
   ///
   /// Optional parameter [removeViaComments] indicates whether dead code should

pkg/test_runner/lib/src/process_queue.dart

@@ -149,7 +149,7 @@ class ProcessQueue {
 
         eventFinishedTestCase(finishedTestCase);
       }, onDone: () {
-        // Wait until the commandQueue/exectutor is done (it may need to stop
+        // Wait until the commandQueue/executor is done (it may need to stop
         // batch runners, browser controllers, ....)
         commandQueue.done.then((_) {
           cancelDebugTimer();

pkg/test_runner/test/skipping_dart2js_compilations_test.dart

@@ -29,7 +29,7 @@ import 'package:test_runner/src/test_case.dart';
 
 import 'utils.dart';
 
-/// This class is reponsible for setting up the files necessary for this test
+/// This class is responsible for setting up the files necessary for this test
 /// as well as touching a file.
 class FileUtils {
   late Directory tempDir;

pkg/vm_service/lib/src/vm_service.dart

@@ -2442,7 +2442,7 @@ class RPCError implements Exception {
 
   String? get details => data == null ? null : data!['details'];
 
-  /// Return a map representation of this error suitable for converstion to
+  /// Return a map representation of this error suitable for conversion to
   /// json.
   Map<String, dynamic> toMap() {
     Map<String, dynamic> map = {

pkg/vm_service/tool/dart/generate_dart.dart

@@ -292,7 +292,7 @@ class RPCError implements Exception {
 
   String? get details => data == null ? null : data!['details'];
 
-  /// Return a map representation of this error suitable for converstion to
+  /// Return a map representation of this error suitable for conversion to
   /// json.
   Map<String, dynamic> toMap() {
     Map<String, dynamic> map = {

runtime/include/dart_api.h

@@ -1615,7 +1615,7 @@ DART_EXPORT DART_WARN_UNUSED_RESULT Dart_Handle Dart_RunLoop(void);
  * \param error A non-NULL pointer which will hold an error message if the call
  *   fails. The error has to be free()ed by the caller.
  *
- * \return If successfull the VM takes owernship of the isolate and takes care
+ * \return If successful the VM takes owernship of the isolate and takes care
  *   of its message loop. If not successful the caller retains owernship of the
  *   isolate.
  */

runtime/observatory/lib/src/elements/heap_snapshot.dart

@@ -418,7 +418,7 @@ class MergedDominatorDiff {
     for (var i = 0; i < worklist.length; i++) {
       worklist[i]._computeChildren(worklist);
     }
-    // Compute area botton-up.
+    // Compute area bottom-up.
     for (var i = worklist.length - 1; i >= 0; i--) {
       worklist[i]._computeArea();
     }

runtime/observatory/lib/src/elements/process_snapshot.dart

@@ -113,7 +113,7 @@ class ProcessItemDiff {
     for (var i = 0; i < worklist.length; i++) {
       worklist[i]._computeChildren(worklist);
     }
-    // Compute area botton-up.
+    // Compute area bottom-up.
     for (var i = worklist.length - 1; i >= 0; i--) {
       worklist[i]._computeArea();
     }

runtime/observatory/lib/tracer.dart

@@ -67,7 +67,7 @@ class Tracer {
   // The start time for the current request.
   Stopwatch? _time;
 
-  // A list of all tracing events for thre current request.
+  // A list of all tracing events for the current request.
   List<TraceEvent> events = <TraceEvent>[];
 
   Tracer() {

runtime/observatory/tests/service/string_escaping_test.dart

@@ -53,7 +53,7 @@ void script() {
   nullInTheMiddle = "There are four\u0000 words.";
   escapedUnicodeEscape = "Should not be A: \\u0041";
 
-  // A surrogate pair will cross the preferred truncation boundry.
+  // A surrogate pair will cross the preferred truncation boundary.
   longStringEven = "..";
   for (int i = 0; i < 512; i++) longStringEven += "𝄞";
   longStringOdd = ".";

runtime/observatory_2/lib/src/elements/heap_snapshot.dart

@@ -457,7 +457,7 @@ class MergedDominatorDiff {
     for (var i = 0; i < worklist.length; i++) {
       worklist[i]._computeChildren(worklist);
     }
-    // Compute area botton-up.
+    // Compute area bottom-up.
     for (var i = worklist.length - 1; i >= 0; i--) {
       worklist[i]._computeArea();
     }

runtime/observatory_2/lib/src/elements/helpers/tag.dart

@@ -90,7 +90,7 @@ class Tag<T extends CustomElement> {
   /// Tag name.
   final String name;
 
-  /// Dependent tags that need to be registred for this tag to work properly.
+  /// Dependent tags that need to be registered for this tag to work properly.
   final Iterable<Tag> dependencies;
 
   const Tag(this.name, {this.dependencies: const []});

runtime/observatory_2/lib/tracer.dart

@@ -67,7 +67,7 @@ class Tracer {
   // The start time for the current request.
   Stopwatch _time;
 
-  // A list of all tracing events for thre current request.
+  // A list of all tracing events for the current request.
   List<TraceEvent> events = <TraceEvent>[];
 
   Tracer() {

runtime/observatory_2/tests/service_2/string_escaping_test.dart

@@ -53,7 +53,7 @@ void script() {
   nullInTheMiddle = "There are four\u0000 words.";
   escapedUnicodeEscape = "Should not be A: \\u0041";
 
-  // A surrogate pair will cross the preferred truncation boundry.
+  // A surrogate pair will cross the preferred truncation boundary.
   longStringEven = "..";
   for (int i = 0; i < 512; i++) longStringEven += "𝄞";
   longStringOdd = ".";

runtime/tests/vm/dart/flutter_regress_101514_test.dart

@@ -13,7 +13,7 @@ main() async {
 }
 
 Stream<int> foo() async* {
-  // While the generator (i.e. this funtion) runs, we cancel the consumer and
+  // While the generator (i.e. this function) runs, we cancel the consumer and
   // try to yield more.
   sub.cancel();
   yield* Stream.fromIterable([1, 2, 3]);

runtime/tests/vm/dart/isolates/fast_object_copy_test.dart

@@ -725,10 +725,10 @@ class SendReceiveTest extends SendReceiveTestBase {
 
     {
       final result = await sendReceive([
-        weakRef1, // Does not have its target inluded.
+        weakRef1, // Does not have its target included.
         weakRef2, // Has its target included later than itself.
         object2,
-        weakRef3, // Does not have its target inluded.
+        weakRef3, // Does not have its target included.
         expando3,
         weakRef4, // Has its target included due to expando.
         expando4,
@@ -747,11 +747,11 @@ class SendReceiveTest extends SendReceiveTestBase {
 
     {
       final result = await sendReceive([
-        weakRef1, // Does not have its target inluded.
+        weakRef1, // Does not have its target included.
         weakRef2, // Has its target included later than itself.
         notAllocatableInTLAB,
         object2,
-        weakRef3, // Does not have its target inluded.
+        weakRef3, // Does not have its target included.
         expando3,
         weakRef4, // Has its target included due to expando.
         expando4,

runtime/tests/vm/dart/licm_and_assert_strengthening_test.dart

@@ -19,7 +19,7 @@ class B extends A<String> {}
 class C extends B {}
 
 void foo(dynamic a) {
-  // To prevent AssertAssignable strengthening from occuring too early we
+  // To prevent AssertAssignable strengthening from occurring too early we
   // need to hide the fact that CheckClass and AssertAssignable are performed
   // against the same SSA value. To achieve that we store a into an array and
   // then load it back. Load Forwarding would happen just before LICM and

runtime/tests/vm/dart/regress_lsl_with_constant_test.dart

@@ -13,7 +13,7 @@ const int N = 10;
 
 @pragma('vm:never-inline')
 void test(Int32List v) {
-  // The shape of the code here is choosen to trigger Int64->Int32
+  // The shape of the code here is chosen to trigger Int64->Int32
   // narrowing in the range analysis.
   v[0] = (v[0] & 0xFF) << (N - 1);
 }

runtime/tests/vm/dart/tts_regression39716_test.dart

@@ -14,7 +14,7 @@ main() {
   // `A`, both have type argument vector at a different offset, so it wouldn't
   // know where to load it from)
 
-  // Populate the SubtypeTestCache with successfull `add(I<String>())`.
+  // Populate the SubtypeTestCache with successful `add(I<String>())`.
   final x = <dynamic>[<A<String>>[]];
   x.single.add(I<String>());
 

runtime/tests/vm/dart_2/flutter_regress_101514_test.dart

@@ -15,7 +15,7 @@ main() async {
 }
 
 Stream<int> foo() async* {
-  // While the generator (i.e. this funtion) runs, we cancel the consumer and
+  // While the generator (i.e. this function) runs, we cancel the consumer and
   // try to yield more.
   sub.cancel();
   yield* Stream.fromIterable([1, 2, 3]);

runtime/tests/vm/dart_2/isolates/fast_object_copy_test.dart

@@ -727,10 +727,10 @@ class SendReceiveTest extends SendReceiveTestBase {
 
     {
       final result = await sendReceive([
-        weakRef1, // Does not have its target inluded.
+        weakRef1, // Does not have its target included.
         weakRef2, // Has its target included later than itself.
         object2,
-        weakRef3, // Does not have its target inluded.
+        weakRef3, // Does not have its target included.
         expando3,
         weakRef4, // Has its target included due to expando.
         expando4,
@@ -749,11 +749,11 @@ class SendReceiveTest extends SendReceiveTestBase {
 
     {
       final result = await sendReceive([
-        weakRef1, // Does not have its target inluded.
+        weakRef1, // Does not have its target included.
         weakRef2, // Has its target included later than itself.
         notAllocatableInTLAB,
         object2,
-        weakRef3, // Does not have its target inluded.
+        weakRef3, // Does not have its target included.
         expando3,
         weakRef4, // Has its target included due to expando.
         expando4,

runtime/tests/vm/dart_2/licm_and_assert_strengthening_test.dart

@@ -21,7 +21,7 @@ class B extends A<String> {}
 class C extends B {}
 
 void foo(dynamic a) {
-  // To prevent AssertAssignable strengthening from occuring too early we
+  // To prevent AssertAssignable strengthening from occurring too early we
   // need to hide the fact that CheckClass and AssertAssignable are performed
   // against the same SSA value. To achieve that we store a into an array and
   // then load it back. Load Forwarding would happen just before LICM and

runtime/tests/vm/dart_2/regress_lsl_with_constant_test.dart

@@ -15,7 +15,7 @@ const int N = 10;
 
 @pragma('vm:never-inline')
 void test(Int32List v) {
-  // The shape of the code here is choosen to trigger Int64->Int32
+  // The shape of the code here is chosen to trigger Int64->Int32
   // narrowing in the range analysis.
   v[0] = (v[0] & 0xFF) << (N - 1);
 }

runtime/tests/vm/dart_2/tts_regression39716_test.dart

@@ -16,7 +16,7 @@ main() {
   // `A`, both have type argument vector at a different offset, so it wouldn't
   // know where to load it from)
 
-  // Populate the SubtypeTestCache with successfull `add(I<String>())`.
+  // Populate the SubtypeTestCache with successful `add(I<String>())`.
   final x = <dynamic>[<A<String>>[]];
   x.single.add(I<String>());
 

runtime/vm/compiler/backend/constant_propagator.h

@@ -42,7 +42,7 @@ class ConstantPropagator : public FlowGraphVisitor {
   void Analyze();
   void Transform();
   // Tries to replace uses of [defn] with a constant, returns true if
-  // successfull. The [value] is used as a temporary handle.
+  // successful. The [value] is used as a temporary handle.
   bool TransformDefinition(Definition* defn);
   void EliminateRedundantBranches();
 

runtime/vm/compiler/backend/il.cc

@@ -1014,7 +1014,7 @@ bool GuardFieldTypeInstr::AttributesEqual(const Instruction& other) const {
 }
 
 Instruction* AssertSubtypeInstr::Canonicalize(FlowGraph* flow_graph) {
-  // If all inputs needed to check instantation are constant, instantiate the
+  // If all inputs needed to check instantiation are constant, instantiate the
   // sub and super type and remove the instruction if the subtype test succeeds.
   if (super_type()->BindsToConstant() && sub_type()->BindsToConstant() &&
       instantiator_type_arguments()->BindsToConstant() &&

runtime/vm/heap/compactor.cc

@@ -51,7 +51,7 @@ class ForwardingBlock {
   // Marks a range of allocation units belonging to an object live by setting
   // the corresponding bits in this ForwardingBlock.  Does not update the
   // new_address_ field; that is done after the total live size of the block is
-  // known and forwarding location is choosen. Does not mark words in subsequent
+  // known and forwarding location is chosen. Does not mark words in subsequent
   // ForwardingBlocks live for objects that extend into the next block.
   void RecordLive(uword old_addr, intptr_t size) {
     intptr_t size_in_units = size >> kObjectAlignmentLog2;

runtime/vm/heap/marker.cc

@@ -94,7 +94,7 @@ class MarkingVisitorBase : public ObjectPointerVisitor {
     // by a conservative estimate of the duration of one batch of work.
     deadline -= 1500;
 
-    // A 512kB budget is choosen to be large enough that we don't waste too much
+    // A 512kB budget is chosen to be large enough that we don't waste too much
     // time on the overhead of exiting ProcessMarkingStack, querying the clock,
     // and re-entering, and small enough that a few batches can fit in the idle
     // time between animation frames. This amount of marking takes ~1ms on a

runtime/vm/object.h

@@ -8070,7 +8070,7 @@ class TypeArguments : public Instance {
     kSizeInWords,
   };
 
-  // The array is terminated by the value kNoInstantiator occuring in place of
+  // The array is terminated by the value kNoInstantiator occurring in place of
   // the instantiator type args of the 4-tuple that would otherwise follow.
   // Therefore, kNoInstantiator must be distinct from any type arguments vector,
   // even a null one. Since arrays are initialized with 0, the instantiations_
@@ -8276,7 +8276,7 @@ class AbstractType : public Instance {
   // type arguments, if any.
   void PrintName(NameVisibility visibility, BaseTextBuffer* printer) const;
 
-  // Add the class name and URI of each occuring type to the uris
+  // Add the class name and URI of each occurring type to the uris
   // list and mark ambiguous triplets to be printed.
   virtual void EnumerateURIs(URIs* uris) const;
 

runtime/vm/service.cc

@@ -198,7 +198,7 @@ class EnumListParameter : public MethodParameter {
     intptr_t element_pos = 0;
 
     // Allocate our element array.  +1 for NULL terminator.
-    // The caller is reponsible for deleting this memory.
+    // The caller is responsible for deleting this memory.
     char** elements = new char*[element_count + 1];
     elements[element_count] = NULL;
 

samples-dev/swarm/swarm_ui_lib/layout/SizingFunctions.dart

@@ -27,7 +27,7 @@ class SizingFunction {
 }
 
 /**
- * Fixed size reprensents a length as defined by CSS3 Values spec.
+ * Fixed size represents a length as defined by CSS3 Values spec.
  * Can also be a percentage of the Grid element's logical width (for columns)
  * or logical height (for rows). When the width or height of the Grid element
  * is undefined, the percentage is ignored and the Grid Track will be

samples/ffi/sample_ffi_functions_structs.dart

@@ -44,7 +44,7 @@ main() {
   }
 
   {
-    // Pass an array of structs to a c funtion.
+    // Pass an array of structs to a c function.
     Pointer<NativeFunction<NativeCoordinateOp>> p1 =
         ffiTestFunctions.lookup("CoordinateElemAt1");
     NativeCoordinateOp f1 = p1.asFunction();

samples_2/ffi/sample_ffi_functions_structs.dart

@@ -46,7 +46,7 @@ main() {
   }
 
   {
-    // Pass an array of structs to a c funtion.
+    // Pass an array of structs to a c function.
     Pointer<NativeFunction<NativeCoordinateOp>> p1 =
         ffiTestFunctions.lookup("CoordinateElemAt1");
     NativeCoordinateOp f1 = p1.asFunction();

sdk/lib/_http/websocket_impl.dart

@@ -647,7 +647,7 @@ class _WebSocketPerMessageDeflate {
     }
 
     // RFC 7692 7.2.3.6. "Generating an Empty Fragment" says that if the
-    // compression library doesn't generate any data when the bufer is empty,
+    // compression library doesn't generate any data when the buffer is empty,
     // then an empty uncompressed deflate block is used for this purpose. The
     // 0x00 block has the BFINAL header bit set to 0 and the BTYPE header set to
     // 00 along with 5 bits of padding. This block decodes to zero bytes.

sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart

@@ -140,7 +140,7 @@ class _AsyncRun {
   static final _scheduleImmediateClosure = _initializeScheduleImmediate();
 
   static void Function(void Function()) _initializeScheduleImmediate() {
-    // d8 support, see preambles/d8.js for the definiton of `scheduleImmediate`.
+    // d8 support, see preambles/d8.js for the definition of `scheduleImmediate`.
     //
     // TODO(jmesserly): do we need this? It's only for our d8 stack trace test.
     if (JS('', '#.scheduleImmediate', dart.global_) != null) {

sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/types.dart

@@ -273,7 +273,7 @@ packageJSType(String name) {
 /// denote *some* package:js type in our subtyping logic.
 ///
 /// Used only when a concrete PackageJSType is not available i.e. when neither
-/// the object nor the target type is a PackageJSType. Avoids initializating a
+/// the object nor the target type is a PackageJSType. Avoids initializing a
 /// new PackageJSType every time. Note that we don't add it to the set of JS
 /// types, since it's not an actual JS class.
 final _pkgJSTypeForSubtyping = PackageJSType('');

sdk/lib/_internal/js_shared/lib/rti.dart

@@ -2224,7 +2224,7 @@ class _Universe {
 ///   ToType(Rti): Same Rti
 ///
 ///
-/// Notes on enviroments and indexing.
+/// Notes on environments and indexing.
 ///
 /// To avoid creating a binding Rti for a single function type parameter, the
 /// type is passed without creating a 1-tuple object. This means that the

sdk/lib/_internal/vm/bin/socket_patch.dart

@@ -481,7 +481,7 @@ class _NativeSocket extends _NativeSocketNativeWrapper with _ServiceObject {
   // Only used for UDP sockets.
   bool _availableDatagram = false;
 
-  // The number of incoming connnections for Listening socket.
+  // The number of incoming connections for Listening socket.
   int connections = 0;
 
   // The count of received event from eventhandler.

sdk/lib/_internal/vm/lib/regexp_patch.dart

@@ -53,7 +53,7 @@ class RegExp {
   static int _findEscapeChar(String text, int start) {
     // Table where each character in the range U+0000 to U+007f is represented
     // by whether it needs to be escaped in a regexp.
-    // The \x00 characters means escacped, and \x01 means non-escaped.
+    // The \x00 characters means escaped, and \x01 means non-escaped.
     const escapes =
         "\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01"
         "\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01"

sdk/lib/_internal/vm/lib/string_patch.dart

@@ -918,7 +918,7 @@ abstract class _StringBase implements String {
     int startIndex = 0;
     int previousIndex = 0;
     // 'pattern' may not be implemented correctly and therefore we cannot
-    // call _substringUnhchecked unless it is a trustworthy type (e.g. String).
+    // call _substringUnchecked unless it is a trustworthy type (e.g. String).
     while (true) {
       if (startIndex == length || !iterator.moveNext()) {
         result.add(this.substring(previousIndex, length));

sdk/lib/_internal/wasm/lib/string_patch.dart

@@ -849,7 +849,7 @@ abstract class _StringBase implements String {
     int startIndex = 0;
     int previousIndex = 0;
     // 'pattern' may not be implemented correctly and therefore we cannot
-    // call _substringUnhchecked unless it is a trustworthy type (e.g. String).
+    // call _substringUnchecked unless it is a trustworthy type (e.g. String).
     while (true) {
       if (startIndex == length || !iterator.moveNext()) {
         result.add(this.substring(previousIndex, length));

sdk/lib/async/stream_controller.dart

@@ -701,8 +701,8 @@ abstract class _StreamController<T> implements _StreamControllerBase<T> {
     // If either of addStream's cancel or `onCancel` returns a future,
     // we wait for it before continuing.
     // Any error during this process ends up in the returned future.
-    // If more errors happen, we act as if it happens inside nested try/finallys
-    // or whenComplete calls, and only the last error ends up in the
+    // If more errors happen, we act as if it happens inside nested try/finally
+    // blocks or whenComplete calls, and only the last error ends up in the
     // returned future.
     Future<void>? result;
     if (_isAddingStream) {

sdk/lib/io/socket.dart

@@ -904,7 +904,7 @@ abstract class ResourceHandle {
 /// [RawSocket.readMessage].
 ///
 /// Control messages could carry different information including
-/// [ResourceHandle]. If [ResourceHandle]s are availabe as part of this message,
+/// [ResourceHandle]. If [ResourceHandle]s are available as part of this message,
 /// they can be extracted via [extractHandles].
 abstract class SocketControlMessage {
   /// Creates a control message containing the provided [handles].

tests/corelib/shuffle_test.dart

@@ -67,7 +67,7 @@ void testShuffle(list) {
   // of a proper shuffling hitting the same list again is less than 10^80
   // (arbitrary bignum - approx. number of atoms in the universe).
   //
-  // The probablility of shuffling a list of length n into the same list is
+  // The probability of shuffling a list of length n into the same list is
   // 1/n!. If one shuffle didn't change the list, repeat shuffling until
   // probability of randomly hitting the same list every time is less than
   // 1/1e80.

tests/corelib/uri_ipv6_test.dart

@@ -169,7 +169,7 @@ void testValidIpv6Uri() {
   Expect.equals('https://[fe80::8eae:4c4d:fee9:8434%25rename3]/index.html',
       uri.toString());
 
-  // Test construtors with host name
+  // Test constructors with host name
   uri = Uri(scheme: 'https', host: '[ff02::5678%pvc1.3]');
   uri = Uri(scheme: 'https', host: '[fe80::a%1]');
   uri = Uri(scheme: 'https', host: '[fe80::a%25eE1]');

tests/corelib_2/shuffle_test.dart

@@ -69,7 +69,7 @@ void testShuffle(list) {
   // of a proper shuffling hitting the same list again is less than 10^80
   // (arbitrary bignum - approx. number of atoms in the universe).
   //
-  // The probablility of shuffling a list of length n into the same list is
+  // The probability of shuffling a list of length n into the same list is
   // 1/n!. If one shuffle didn't change the list, repeat shuffling until
   // probability of randomly hitting the same list every time is less than
   // 1/1e80.

tests/corelib_2/uri_ipv6_test.dart

@@ -171,7 +171,7 @@ void testValidIpv6Uri() {
   Expect.equals('https://[fe80::8eae:4c4d:fee9:8434%25rename3]/index.html',
       uri.toString());
 
-  // Test construtors with host name
+  // Test constructors with host name
   uri = Uri(scheme: 'https', host: '[ff02::5678%pvc1.3]');
   uri = Uri(scheme: 'https', host: '[fe80::a%1]');
   uri = Uri(scheme: 'https', host: '[fe80::a%25eE1]');

tests/ffi/function_structs_test.dart

@@ -57,7 +57,7 @@ void testFunctionWithStruct({bool isLeaf: false}) {
   calloc.free(c2);
 }
 
-/// pass an array of structs to a c funtion
+/// pass an array of structs to a c function
 void testFunctionWithStructArray({bool isLeaf: false}) {
   Pointer<NativeFunction<NativeCoordinateOp>> p1 =
       ffiTestFunctions.lookup("CoordinateElemAt1");

tests/ffi/generator/structs_by_value_tests_configuration.dart

@@ -719,7 +719,7 @@ final struct16bytesMixed2 =
 
 final struct17bytesInt = StructType([int64, int64, int8]);
 
-/// This struct has only 1 byte field-alignmnent requirements.
+/// This struct has only 1 byte field-alignment requirements.
 final struct19bytesInt = StructType(List.filled(19, uint8));
 
 /// The first homogenous integer struct that does not go into registers

tests/ffi/generator/structs_by_value_tests_generator.dart

@@ -96,7 +96,7 @@ extension on List<Member> {
 }
 
 extension on CType {
-  /// A list of statements adding all members recurisvely to `result`.
+  /// A list of statements adding all members recursively to `result`.
   ///
   /// Both valid in Dart and C.
   String addToResultStatements(String variableName) {
@@ -130,7 +130,7 @@ extension on CType {
 }
 
 extension on List<Member> {
-  /// A list of statements adding all members recurisvely to `result`.
+  /// A list of statements adding all members recursively to `result`.
   ///
   /// Both valid in Dart and C.
   String addToResultStatements([String namePrefix = ""]) {

tests/ffi/regress_40537_test.dart

@@ -29,14 +29,14 @@ final regress40537 = ffiTestFunctions
 
 variant1Negative() {
   // 0xF9 =  -7 in 2s complement.
-  // 0xF9 = 249 in unsinged.
+  // 0xF9 = 249 in unsigned.
   final result = regress40537(-7);
   print(result);
   Expect.equals(1, result);
 }
 
 variant1Positive() {
-  // 0xF9 = 249 in unsinged.
+  // 0xF9 = 249 in unsigned.
   final result = regress40537(0xFFFFFFF9);
   print(result);
   Expect.equals(1, result);

tests/ffi_2/function_structs_test.dart

@@ -58,7 +58,7 @@ void testFunctionWithStruct({bool isLeaf: false}) {
   calloc.free(c2);
 }
 
-/// pass an array of structs to a c funtion
+/// pass an array of structs to a c function
 void testFunctionWithStructArray({bool isLeaf: false}) {
   Pointer<NativeFunction<NativeCoordinateOp>> p1 =
       ffiTestFunctions.lookup("CoordinateElemAt1");

tests/ffi_2/regress_40537_test.dart

@@ -31,14 +31,14 @@ final regress40537 = ffiTestFunctions
 
 variant1Negative() {
   // 0xF9 =  -7 in 2s complement.
-  // 0xF9 = 249 in unsinged.
+  // 0xF9 = 249 in unsigned.
   final result = regress40537(-7);
   print(result);
   Expect.equals(1, result);
 }
 
 variant1Positive() {
-  // 0xF9 = 249 in unsinged.
+  // 0xF9 = 249 in unsigned.
   final result = regress40537(0xFFFFFFF9);
   print(result);
   Expect.equals(1, result);

tests/language/async_star/async_star_await_for_test.dart

@@ -54,7 +54,7 @@ Stream<int> consume(List<String> log,
     if (event == yieldAt) {
       log.add("y$event[");
       // Yield may cause subscription to pause or cancel.
-      // This loop should stay at the yield until the event has been delieverd.
+      // This loop should stay at the yield until the event has been delivered.
       // If the receiver pauses or cancels, we delay or break the loop here.
       yield event;
       log.add("]");

tests/language/const/string_test.dart

@@ -21,7 +21,7 @@ main() {
   Expect.isTrue(identical("abcd", 'ab' 'cd'));
   Expect.isTrue(identical("abcd", 'ab' "cd"));
 
-  // Or when there are more than 2 contatenations.
+  // Or when there are more than 2 concatenations.
   Expect.isTrue(identical("abcd", "a" "b" "cd"));
   Expect.isTrue(identical("abcd", "a" "b" "c" "d"));
   Expect.isTrue(identical('abcd', 'a' 'b' 'c' 'd'));

tests/language/constants_2018/potential_const_dynamic_test.dart

@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 // Tests that a dynamic type does not affect whether an expression is
-// potentially constant, the actual type of the value of an experssion
+// potentially constant, the actual type of the value of an expression
 // only matters if the expression is evaluated as a constant.
 
 main() {

tests/language/constants_2018/potential_const_test.dart

@@ -12,7 +12,7 @@ class C {
   const C(this.v);
 
   // Redirecting generative constructor invocation parameters,
-  // must be potenentially constant.
+  // must be potentially constant.
   const C.r1() : this(const C(null));
 
   // Only evaluates the true branch when passed `true` as argument.

tests/language/constructor/tear_off_test.dart

@@ -194,7 +194,7 @@ void main() {
   // Using a type variable, not a constant type expression.
   // Canonicalization is unspecified, but equality holds.
   (<T>() {
-    // Tear off with explicit instantation to the same non-constant type.
+    // Tear off with explicit instantiation to the same non-constant type.
     Expect.equals(GGen<T>.new, GGen<T>.new);
     Expect.equals(GGen<T>.named, GGen<T>.named);
     Expect.equals(GGenRedir<T>.new, GGenRedir<T>.new);

tests/language/nonfunction_type_aliases/private_names/private_name_mixin_test.dart

@@ -62,7 +62,7 @@ void test2() {
   // original library.
   Expect.equals(privateLibrarySentinel, callPrivateSuperMixinMethod(p));
   Expect.equals(privateLibrarySentinel, callPrivateInstanceMethod(p));
-  // The new private mixin and instance methods are acessible in this library.
+  // The new private mixin and instance methods are accessible in this library.
   Expect.equals(publicLibrarySentinel, p._privateMixinMethod());
   Expect.equals(publicLibrarySentinel, p._privateInstanceMethod());
 }

tests/language_2/async_star/async_star_await_for_test.dart

@@ -56,7 +56,7 @@ Stream<int> consume(List<String> log,
     if (event == yieldAt) {
       log.add("y$event[");
       // Yield may cause subscription to pause or cancel.
-      // This loop should stay at the yield until the event has been delieverd.
+      // This loop should stay at the yield until the event has been delivered.
       // If the receiver pauses or cancels, we delay or break the loop here.
       yield event;
       log.add("]");

tests/language_2/const/string_test.dart

@@ -23,7 +23,7 @@ main() {
   Expect.isTrue(identical("abcd", 'ab' 'cd'));
   Expect.isTrue(identical("abcd", 'ab' "cd"));
 
-  // Or when there are more than 2 contatenations.
+  // Or when there are more than 2 concatenations.
   Expect.isTrue(identical("abcd", "a" "b" "cd"));
   Expect.isTrue(identical("abcd", "a" "b" "c" "d"));
   Expect.isTrue(identical('abcd', 'a' 'b' 'c' 'd'));

tests/language_2/constants_2018/potential_const_dynamic_test.dart

@@ -5,7 +5,7 @@
 // @dart = 2.9
 
 // Tests that a dynamic type does not affect whether an expression is
-// potentially constant, the actual type of the value of an experssion
+// potentially constant, the actual type of the value of an expression
 // only matters if the expression is evaluated as a constant.
 
 main() {

tests/language_2/constants_2018/potential_const_test.dart

@@ -14,7 +14,7 @@ class C {
   const C(this.v);
 
   // Redirecting generative constructor invocation parameters,
-  // must be potenentially constant.
+  // must be potentially constant.
   const C.r1() : this(const C(null));
 
   // Only evaluates the true branch when passed `true` as argument.

tests/lib/async/zone_value_test.dart

@@ -138,7 +138,7 @@ main() {
 }
 
 // Class of objects that consider themselves equal to their originals.
-// Sees through mimickry.
+// Sees through mimicry.
 class Mimic {
   final Object original;
   Mimic(this.original);

tests/lib/isolate/weak_reference_message_2_test.dart

@@ -59,10 +59,10 @@ Future<void> runHelper(SendPort port) async {
   expando4[key4] = object4;
 
   final message = <dynamic>[
-    weakRef1, // Does not have its target inluded.
+    weakRef1, // Does not have its target included.
     weakRef2, // Has its target included later than itself.
     object2,
-    weakRef3, // Does not have its target inluded.
+    weakRef3, // Does not have its target included.
     expando3,
     weakRef4, // Has its target included due to expando.
     expando4,

tests/lib/js/array_test.dart

@@ -21,7 +21,7 @@ testArrayConstructor() {
   var list = <int>[1, 2, 3];
   testArray = list;
 
-  // Call the consturctor with `new`.
+  // Call the constructor with `new`.
   var array = js.callConstructor(js.getProperty(testArray, 'constructor'), []);
   var list2 = array as List;
   Expect.listEquals(list2, []);

tests/lib/js/js_util/properties_test.dart

@@ -315,7 +315,7 @@ main() {
       expect(index, equals(1));
       expect(js_util.getProperty(f.list, index), equals(4));
 
-      // Accessing nested object properites.
+      // Accessing nested object properties.
       var objectProperty = js_util.getProperty(f, 'objectProperty');
       expect(js_util.getProperty(objectProperty, 'c'), equals(1));
       expect(js_util.getProperty(objectProperty, 'list') is List, isTrue);

tests/lib_2/async/zone_value_test.dart

@@ -140,7 +140,7 @@ main() {
 }
 
 // Class of objects that consider themselves equal to their originals.
-// Sees through mimickry.
+// Sees through mimicry.
 class Mimic {
   final Object original;
   Mimic(this.original);

tests/lib_2/isolate/weak_reference_message_2_test.dart

@@ -61,10 +61,10 @@ Future<void> runHelper(SendPort port) async {
   expando4[key4] = object4;
 
   final message = <dynamic>[
-    weakRef1, // Does not have its target inluded.
+    weakRef1, // Does not have its target included.
     weakRef2, // Has its target included later than itself.
     object2,
-    weakRef3, // Does not have its target inluded.
+    weakRef3, // Does not have its target included.
     expando3,
     weakRef4, // Has its target included due to expando.
     expando4,

tests/lib_2/js/array_test.dart

@@ -23,7 +23,7 @@ testArrayConstructor() {
   var list = <int>[1, 2, 3];
   testArray = list;
 
-  // Call the consturctor with `new`.
+  // Call the constructor with `new`.
   var array = js.callConstructor(js.getProperty(testArray, 'constructor'), []);
   var list2 = array as List;
   Expect.listEquals(list2, []);