Stoppp using trippple consonants

pkg/compiler/lib/src/js_emitter/type_test_registry.dart

 // Copyright (c) 2014, 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.
 
 library dart2js.js_emitter.type_test_registry;
 
 import '../elements/resolution_types.dart'
     show
         ResolutionDartType,
         ResolutionFunctionType,
         ResolutionInterfaceType,
         Types,
         ResolutionTypeVariableType;
 import '../elements/elements.dart'
     show ClassElement, Element, ElementKind, MemberElement, MethodElement;
 import '../js_backend/js_backend.dart'
     show JavaScriptBackend, RuntimeTypesSubstitutions, TypeChecks;
 import '../universe/world_builder.dart';
 import '../world.dart' show ClosedWorld;
 
 class TypeTestRegistry {
   /**
-   * Raw ClassElement symbols occuring in is-checks and type assertions.  If the
+   * Raw ClassElement symbols occurring in is-checks and type assertions.  If the
    * program contains parameterized checks `x is Set<int>` and
    * `x is Set<String>` then the ClassElement `Set` will occur once in
    * [checkedClasses].
    */
   Set<ClassElement> checkedClasses;
 
   /**
    * The set of function types that checked, both explicity through tests of
    * typedefs and implicitly through type annotations in checked mode.
    */
@@ skipping 133 matching lines @@
     checkedFunctionTypes = new Set<ResolutionFunctionType>();
     _codegenWorldBuilder.isChecks.forEach((ResolutionDartType t) {
       if (t is ResolutionInterfaceType) {
         checkedClasses.add(t.element);
       } else if (t is ResolutionFunctionType) {
         checkedFunctionTypes.add(t);
       }
     });
   }
 }