Dart SDK Spelling b, c, and d.

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

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of js_backend.backend;
 
 /// For each class, stores the possible class subtype tests that could succeed.
 abstract class TypeChecks {
   /// Get the set of checks required for class [element].
   Iterable<TypeCheck> operator [](ClassElement element);
@@ skipping 73 matching lines @@
   void registerImplicitChecks(
       WorldBuilder worldBuilder, Iterable<ClassElement> classesUsingChecks);
 }
 
 /// Interface for computing substitutions need for runtime type checks.
 abstract class RuntimeTypesSubstitutions {
   bool isTrivialSubstitution(ClassElement cls, ClassElement check);
 
   Substitution getSubstitution(ClassElement cls, ClassElement other);
 
-  /// Compute the required type checkes and substitutions for the given
+  /// Compute the required type checks and substitutions for the given
   /// instantitated and checked classes.
   TypeChecks computeChecks(
       Set<ClassElement> instantiated, Set<ClassElement> checked);
 
   Set<ClassElement> getClassesUsedInSubstitutions(TypeChecks checks);
 
   static bool hasTypeArguments(ResolutionDartType type) {
     if (type is ResolutionInterfaceType) {
       ResolutionInterfaceType interfaceType = type;
       return !interfaceType.treatAsRaw;
@@ skipping 1056 matching lines @@
  * substition for this check.
  */
 class TypeCheck {
   final ClassElement cls;
   final Substitution substitution;
   final int hashCode = _nextHash = (_nextHash + 100003).toUnsigned(30);
   static int _nextHash = 0;
 
   TypeCheck(this.cls, this.substitution);
 }