From 0df7d2c74aa1a4dcbb63347d94dabdafca00ab00 Mon Sep 17 00:00:00 2001
From: Wesley Wigham <wewigham@microsoft.com>
Date: Mon, 7 Aug 2017 18:06:28 -0700
Subject: [PATCH] Accept new baselines

---
 tests/baselines/reference/2dArrays.js          |  2 +-
 .../baselines/reference/ClassDeclaration11.js  |  2 +-
 .../baselines/reference/ClassDeclaration13.js  |  2 +-
 .../baselines/reference/ClassDeclaration21.js  |  2 +-
 .../baselines/reference/ClassDeclaration22.js  |  2 +-
 .../reference/ES5For-ofTypeCheck10.js          |  2 +-
 .../baselines/reference/ES5SymbolProperty2.js  |  2 +-
 .../baselines/reference/ES5SymbolProperty3.js  |  2 +-
 .../baselines/reference/ES5SymbolProperty4.js  |  2 +-
 .../baselines/reference/ES5SymbolProperty5.js  |  2 +-
 .../baselines/reference/ES5SymbolProperty6.js  |  2 +-
 .../baselines/reference/ES5SymbolProperty7.js  |  2 +-
 ...hichExtendsInterfaceWithInaccessibleType.js |  2 +-
 tests/baselines/reference/Protected4.js        |  2 +-
 tests/baselines/reference/Protected7.js        |  2 +-
 ...portedAndNonExportedClassesOfTheSameName.js |  2 +-
 tests/baselines/reference/abstractProperty.js  |  2 +-
 .../accessInstanceMemberFromStaticMethod01.js  |  2 +-
 .../accessOverriddenBaseClassMember1.js        |  2 +-
 .../reference/accessibilityModifiers.js        |  2 +-
 .../ambiguousCallsWhereReturnTypesAgree.js     |  2 +-
 tests/baselines/reference/anonterface.js       |  2 +-
 .../reference/anonymousClassExpression2.js     |  2 +-
 tests/baselines/reference/argsInScope.js       |  2 +-
 .../reference/arrayAssignmentTest1.js          |  2 +-
 .../reference/arrayAssignmentTest2.js          |  2 +-
 .../reference/arrayAssignmentTest4.js          |  2 +-
 .../reference/arrayAssignmentTest5.js          |  2 +-
 .../reference/arrayAssignmentTest6.js          |  2 +-
 .../reference/arrayBestCommonTypes.js          |  2 +-
 .../reference/arrayOfExportedClass.js          |  2 +-
 .../reference/arrayReferenceWithoutTypeArgs.js |  2 +-
 tests/baselines/reference/arrayconcat.js       |  2 +-
 .../reference/arrowFunctionExpressions.js      |  2 +-
 tests/baselines/reference/asiAbstract.js       |  2 +-
 tests/baselines/reference/asiInES6Classes.js   |  2 +-
 .../reference/asiPublicPrivateProtected.js     |  2 +-
 .../reference/assertInWrapSomeTypeParameter.js |  2 +-
 .../reference/assignToExistingClass.js         |  2 +-
 ...tCompatInterfaceWithStringIndexSignature.js |  2 +-
 .../reference/assignmentLHSIsValue.js          |  2 +-
 .../reference/asyncAwaitIsolatedModules_es5.js |  2 +-
 tests/baselines/reference/asyncAwait_es5.js    |  2 +-
 .../reference/asyncImportedPromise_es5.js      |  2 +-
 .../baselines/reference/augmentedTypesClass.js |  2 +-
 .../reference/augmentedTypesClass2.js          |  2 +-
 .../reference/augmentedTypesClass2a.js         |  2 +-
 .../reference/augmentedTypesClass3.js          |  2 +-
 .../reference/augmentedTypesClass4.js          |  2 +-
 .../baselines/reference/augmentedTypesEnum.js  |  2 +-
 .../baselines/reference/augmentedTypesEnum2.js |  2 +-
 .../reference/augmentedTypesExternalModule1.js |  2 +-
 .../reference/augmentedTypesFunction.js        |  2 +-
 .../reference/augmentedTypesInterface.js       |  2 +-
 .../reference/augmentedTypesModules.js         |  2 +-
 .../reference/augmentedTypesModules2.js        |  2 +-
 .../reference/augmentedTypesModules3.js        |  2 +-
 .../reference/augmentedTypesModules3b.js       |  2 +-
 .../reference/augmentedTypesModules4.js        |  2 +-
 tests/baselines/reference/augmentedTypesVar.js |  2 +-
 tests/baselines/reference/autoLift2.js         |  2 +-
 tests/baselines/reference/autolift4.js         |  2 +-
 tests/baselines/reference/avoid.js             |  2 +-
 tests/baselines/reference/baseCheck.js         |  2 +-
 .../reference/baseTypeAfterDerivedType.js      |  2 +-
 .../baseTypeWrappingInstantiationChain.js      |  2 +-
 .../reference/binopAssignmentShouldHaveType.js |  2 +-
 ...ckScopedFunctionDeclarationInStrictClass.js |  2 +-
 .../blockScopedVariablesUseBeforeDef.js        |  2 +-
 ...nctionWithIncorrectNumberOfTypeArguments.js |  2 +-
 ...callGenericFunctionWithZeroTypeArguments.js |  2 +-
 .../callNonGenericFunctionWithTypeArguments.js |  2 +-
 .../callOverloadViaElementAccessExpression.js  |  2 +-
 tests/baselines/reference/callOverloads1.js    |  2 +-
 tests/baselines/reference/callOverloads2.js    |  2 +-
 tests/baselines/reference/callOverloads3.js    |  2 +-
 tests/baselines/reference/callOverloads4.js    |  2 +-
 tests/baselines/reference/callOverloads5.js    |  2 +-
 ...atureWithOptionalParameterAndInitializer.js |  2 +-
 ...esWithAccessibilityModifiersOnParameters.js |  2 +-
 .../callSignaturesWithDuplicateParameters.js   |  2 +-
 .../callSignaturesWithOptionalParameters.js    |  2 +-
 .../callSignaturesWithOptionalParameters2.js   |  2 +-
 .../callSignaturesWithParameterInitializers.js |  2 +-
 ...callSignaturesWithParameterInitializers2.js |  2 +-
 tests/baselines/reference/callWithSpread.js    |  2 +-
 .../captureSuperPropertyAccessInSuperCall01.js |  2 +-
 .../reference/captureThisInSuperCall.js        |  2 +-
 .../reference/capturedLetConstInLoop10.js      |  2 +-
 .../reference/capturedLetConstInLoop13.js      |  2 +-
 .../reference/capturedLetConstInLoop9.js       |  2 +-
 ...ParameterConstrainedToOtherTypeParameter.js |  2 +-
 ...arameterConstrainedToOtherTypeParameter2.js |  2 +-
 .../reference/checkJsxChildrenProperty10.js    |  2 +-
 .../reference/checkJsxChildrenProperty11.js    |  2 +-
 .../reference/checkJsxChildrenProperty12.js    |  2 +-
 .../reference/checkJsxChildrenProperty13.js    |  2 +-
 .../reference/checkJsxChildrenProperty3.js     |  2 +-
 .../reference/checkJsxChildrenProperty4.js     |  2 +-
 .../reference/checkJsxChildrenProperty5.js     |  2 +-
 .../reference/checkJsxChildrenProperty6.js     |  2 +-
 .../reference/checkJsxChildrenProperty7.js     |  2 +-
 .../reference/checkJsxChildrenProperty8.js     |  2 +-
 .../checkSwitchStatementIfCaseTypeIsString.js  |  2 +-
 .../reference/classAbstractAsIdentifier.js     |  2 +-
 .../reference/classAbstractCrashedOnce.js      |  2 +-
 .../reference/classAbstractExtends.js          |  2 +-
 .../reference/classAbstractGeneric.js          |  2 +-
 .../reference/classAbstractInstantiations2.js  |  2 +-
 .../classAbstractMethodInNonAbstractClass.js   |  2 +-
 .../classAbstractMethodWithImplementation.js   |  2 +-
 .../reference/classAbstractOverloads.js        |  2 +-
 .../classAbstractOverrideWithAbstract.js       |  2 +-
 .../reference/classAbstractSuperCalls.js       |  2 +-
 .../classAbstractUsingAbstractMethod1.js       |  2 +-
 .../classAbstractUsingAbstractMethods2.js      |  2 +-
 tests/baselines/reference/classBlockScoping.js |  2 +-
 .../classConstructorAccessibility2.js          |  2 +-
 .../classConstructorAccessibility4.js          |  2 +-
 tests/baselines/reference/classExpression4.js  |  2 +-
 tests/baselines/reference/classExpression5.js  |  2 +-
 .../reference/classExpressionTest1.js          |  2 +-
 .../reference/classExpressionTest2.js          |  2 +-
 tests/baselines/reference/classExpressions.js  |  2 +-
 .../baselines/reference/classExtendingClass.js |  2 +-
 ...dsInterfaceThatExtendsClassWithPrivates1.js |  2 +-
 .../reference/classImplementsClass2.js         |  2 +-
 .../reference/classImplementsClass3.js         |  2 +-
 .../reference/classImplementsClass4.js         |  2 +-
 .../reference/classImplementsClass5.js         |  2 +-
 .../reference/classImplementsClass6.js         |  2 +-
 .../classImplementsImportedInterface.js        |  2 +-
 tests/baselines/reference/classOrder1.js       |  2 +-
 tests/baselines/reference/classOrder2.js       |  2 +-
 .../reference/classPropertyAsPrivate.js        |  2 +-
 .../reference/classPropertyAsProtected.js      |  2 +-
 .../classPropertyIsPublicByDefault.js          |  2 +-
 .../reference/classSideInheritance1.js         |  2 +-
 .../reference/classSideInheritance2.js         |  2 +-
 .../reference/classWithDuplicateIdentifier.js  |  2 +-
 .../reference/classWithMultipleBaseClasses.js  |  2 +-
 ...thOnlyPublicMembersEquivalentToInterface.js |  2 +-
 ...hOnlyPublicMembersEquivalentToInterface2.js |  2 +-
 .../reference/classWithOptionalParameter.js    |  2 +-
 ...assWithOverloadImplementationOfWrongName.js |  2 +-
 ...ssWithOverloadImplementationOfWrongName2.js |  2 +-
 .../reference/classWithPrivateProperty.js      |  2 +-
 .../reference/classWithProtectedProperty.js    |  2 +-
 .../reference/classWithPublicProperty.js       |  2 +-
 tests/baselines/reference/classdecl.js         |  2 +-
 .../cloduleAcrossModuleDefinitions.js          |  2 +-
 .../reference/collisionArgumentsClassMethod.js |  2 +-
 ...collisionCodeGenModuleWithMethodChildren.js |  2 +-
 .../collisionRestParameterClassMethod.js       |  2 +-
 .../collisionSuperAndLocalFunctionInMethod.js  |  2 +-
 .../collisionSuperAndLocalVarInMethod.js       |  2 +-
 .../collisionSuperAndNameResolution.js         |  2 +-
 .../reference/collisionSuperAndParameter.js    |  2 +-
 .../reference/collisionSuperAndParameter1.js   |  2 +-
 ...llisionThisExpressionAndLocalVarInMethod.js |  2 +-
 ...ExpressionAndLocalVarWithSuperExperssion.js |  2 +-
 ...collisionThisExpressionAndNameResolution.js |  2 +-
 .../collisionThisExpressionAndParameter.js     |  2 +-
 .../reference/commentOnClassMethod1.js         |  2 +-
 .../baselines/reference/commentOnSignature1.js |  2 +-
 .../reference/commentsClassMembers.js          |  2 +-
 .../baselines/reference/commentsInheritance.js |  2 +-
 tests/baselines/reference/commentsOverloads.js |  2 +-
 .../reference/commentsTypeParameters.js        |  2 +-
 .../reference/commentsdoNotEmitComments.js     |  2 +-
 .../reference/commentsemitComments.js          |  2 +-
 .../comparisonOperatorWithIdenticalObjects.js  |  2 +-
 .../reference/complexClassRelationships.js     |  2 +-
 .../reference/complexNarrowingWithAny.js       |  2 +-
 .../baselines/reference/complicatedPrivacy.js  |  2 +-
 .../reference/compoundAssignmentLHSIsValue.js  |  2 +-
 ...mpoundExponentiationAssignmentLHSIsValue.js |  2 +-
 .../reference/computedPropertyNames10_ES5.js   |  2 +-
 .../reference/computedPropertyNames13_ES5.js   |  2 +-
 .../reference/computedPropertyNames14_ES5.js   |  2 +-
 .../reference/computedPropertyNames15_ES5.js   |  2 +-
 .../reference/computedPropertyNames21_ES5.js   |  2 +-
 .../reference/computedPropertyNames22_ES5.js   |  2 +-
 .../reference/computedPropertyNames23_ES5.js   |  2 +-
 .../reference/computedPropertyNames24_ES5.js   |  2 +-
 .../reference/computedPropertyNames25_ES5.js   |  2 +-
 .../reference/computedPropertyNames26_ES5.js   |  2 +-
 .../reference/computedPropertyNames27_ES5.js   |  2 +-
 .../reference/computedPropertyNames28_ES5.js   |  2 +-
 .../reference/computedPropertyNames29_ES5.js   |  2 +-
 .../reference/computedPropertyNames2_ES5.js    |  2 +-
 .../reference/computedPropertyNames30_ES5.js   |  2 +-
 .../reference/computedPropertyNames31_ES5.js   |  2 +-
 .../reference/computedPropertyNames32_ES5.js   |  2 +-
 .../reference/computedPropertyNames33_ES5.js   |  2 +-
 .../reference/computedPropertyNames34_ES5.js   |  2 +-
 .../reference/computedPropertyNames3_ES5.js    |  2 +-
 .../reference/computedPropertyNames40_ES5.js   |  2 +-
 ...computedPropertyNamesContextualType1_ES5.js |  2 +-
 ...computedPropertyNamesContextualType2_ES5.js |  2 +-
 ...computedPropertyNamesContextualType3_ES5.js |  2 +-
 ...omputedPropertyNamesDeclarationEmit1_ES5.js |  2 +-
 ...omputedPropertyNamesDeclarationEmit5_ES5.js |  2 +-
 .../computedPropertyNamesOnOverloads_ES5.js    |  2 +-
 .../computedPropertyNamesSourceMap1_ES5.js     |  2 +-
 ...edPropertyNamesSourceMap1_ES5.sourcemap.txt |  2 +-
 .../computedPropertyNamesSourceMap2_ES5.js     |  2 +-
 ...edPropertyNamesSourceMap2_ES5.sourcemap.txt |  2 +-
 .../reference/conflictMarkerDiff3Trivia2.js    |  2 +-
 .../reference/conflictMarkerTrivia2.js         |  2 +-
 .../reference/constantOverloadFunction.js      |  2 +-
 .../constantOverloadFunctionNoSubtypeError.js  |  2 +-
 ...onstraintCheckInGenericBaseTypeReference.js |  2 +-
 .../reference/constructorOverloads1.js         |  2 +-
 .../reference/constructorOverloads2.js         |  2 +-
 .../reference/constructorOverloads3.js         |  2 +-
 .../reference/constructorReturnsInvalidType.js |  2 +-
 .../constructorWithIncompleteTypeAnnotation.js |  2 +-
 .../contextualTypeAppliedToVarArgs.js          |  2 +-
 ...yTypedClassExpressionMethodDeclaration02.js |  2 +-
 .../controlFlowSuperPropertyAccess.js          |  2 +-
 .../reference/crashInresolveReturnStatement.js |  2 +-
 ...crashIntypeCheckObjectCreationExpression.js |  2 +-
 .../baselines/reference/crashRegressionTest.js |  2 +-
 .../declFileForClassWithMultipleBaseClasses.js |  2 +-
 ...ileForClassWithPrivateOverloadedFunction.js |  2 +-
 .../reference/declFileForTypeParameters.js     |  2 +-
 tests/baselines/reference/declFileMethods.js   |  4 ++--
 .../declFilePrivateMethodOverloads.js          |  2 +-
 tests/baselines/reference/declInput-2.js       |  2 +-
 tests/baselines/reference/declInput.js         |  2 +-
 tests/baselines/reference/declInput3.js        |  2 +-
 tests/baselines/reference/declInput4.js        |  2 +-
 .../declarationEmitClassMemberNameConflict.js  |  2 +-
 .../declarationEmitProtectedMembers.js         |  2 +-
 .../declarationEmitThisPredicates01.js         |  2 +-
 ...ationEmitThisPredicatesWithPrivateName01.js |  2 +-
 tests/baselines/reference/declarationFiles.js  |  2 +-
 .../baselines/reference/declarationMerging1.js |  2 +-
 .../baselines/reference/declarationMerging2.js |  2 +-
 .../reference/decoratorChecksFunctionBodies.js |  2 +-
 tests/baselines/reference/decoratorMetadata.js |  2 +-
 ...torMetadataRestParameterWithImportedType.js |  2 +-
 tests/baselines/reference/decoratorOnClass9.js |  2 +-
 .../reference/decoratorOnClassMethod1.js       |  2 +-
 .../reference/decoratorOnClassMethod10.js      |  2 +-
 .../reference/decoratorOnClassMethod11.js      |  2 +-
 .../reference/decoratorOnClassMethod12.js      |  2 +-
 .../reference/decoratorOnClassMethod2.js       |  2 +-
 .../reference/decoratorOnClassMethod3.js       |  2 +-
 .../reference/decoratorOnClassMethod8.js       |  2 +-
 .../decoratorOnClassMethodOverload1.js         |  2 +-
 .../decoratorOnClassMethodOverload2.js         |  2 +-
 .../decoratorOnClassMethodParameter1.js        |  2 +-
 .../reference/defaultArgsInOverloads.js        |  2 +-
 ...vedClassConstructorWithExplicitReturns01.js |  2 +-
 ...structorWithExplicitReturns01.sourcemap.txt |  2 +-
 ...dClassFunctionOverridesBaseClassAccessor.js |  2 +-
 .../derivedClassIncludesInheritedMembers.js    |  2 +-
 .../derivedClassOverridesPrivateFunction1.js   |  2 +-
 .../derivedClassOverridesProtectedMembers.js   |  2 +-
 .../derivedClassOverridesProtectedMembers2.js  |  2 +-
 .../derivedClassOverridesProtectedMembers3.js  |  2 +-
 .../derivedClassOverridesPublicMembers.js      |  2 +-
 ...edClassSuperCallsInNonConstructorMembers.js |  2 +-
 .../reference/derivedClassTransitivity.js      |  2 +-
 .../reference/derivedClassTransitivity2.js     |  2 +-
 .../reference/derivedClassTransitivity3.js     |  2 +-
 .../reference/derivedClassTransitivity4.js     |  2 +-
 .../baselines/reference/derivedClassWithAny.js |  2 +-
 ...rivateInstanceShadowingProtectedInstance.js |  2 +-
 ...thPrivateInstanceShadowingPublicInstance.js |  2 +-
 tests/baselines/reference/derivedClasses.js    |  2 +-
 .../reference/derivedGenericClassWithAny.js    |  2 +-
 ...ssesHiddenBaseCallViaSuperPropertyAccess.js |  2 +-
 ...vedTypeCallingBaseImplWithOptionalParams.js |  2 +-
 .../destructuringParameterDeclaration1ES5.js   |  2 +-
 ...ucturingParameterDeclaration1ES5iterable.js |  2 +-
 .../destructuringParameterDeclaration2.js      |  2 +-
 .../destructuringParameterProperties2.js       |  2 +-
 .../destructuringParameterProperties3.js       |  2 +-
 .../detachedCommentAtStartOfFunctionBody1.js   |  2 +-
 .../detachedCommentAtStartOfFunctionBody2.js   |  2 +-
 .../detachedCommentAtStartOfLambdaFunction1.js |  2 +-
 .../detachedCommentAtStartOfLambdaFunction2.js |  2 +-
 .../doNotEmitPinnedCommentOnNotEmittedNode.js  |  2 +-
 ...doNotEmitPinnedCommentOnNotEmittedNodets.js |  2 +-
 .../reference/dottedSymbolResolution1.js       |  2 +-
 .../baselines/reference/downlevelLetConst16.js |  2 +-
 .../reference/duplicateClassElements.js        |  2 +-
 .../reference/duplicateLocalVariable1.js       |  2 +-
 .../reference/duplicateLocalVariable2.js       |  2 +-
 .../reference/duplicatePropertyNames.js        |  2 +-
 .../reference/duplicateTypeParameters2.js      |  2 +-
 .../reference/duplicateVariablesByScope.js     |  2 +-
 .../emitArrowFunctionWhenUsingArguments12.js   |  2 +-
 .../emitCapturingThisInTupleDestructuring2.js  |  2 +-
 .../emitClassExpressionInDeclarationFile.js    |  2 +-
 .../emitClassExpressionInDeclarationFile2.js   |  2 +-
 .../reference/emitDecoratorMetadata_object.js  |  2 +-
 .../emitDecoratorMetadata_restArgs.js          |  2 +-
 .../reference/emitDefaultParametersMethod.js   |  2 +-
 .../reference/emitMemberAccessExpression.js    |  2 +-
 .../reference/emitRestParametersMethod.js      |  2 +-
 .../reference/emitThisInSuperMethodCall.js     |  2 +-
 ...emitter.asyncGenerators.classMethods.es5.js | 18 +++++++++---------
 .../errorRecoveryInClassDeclaration.js         |  2 +-
 tests/baselines/reference/errorSuperCalls.js   |  2 +-
 .../reference/errorSuperPropertyAccess.js      |  2 +-
 .../reference/errorsInGenericTypeReference.js  |  2 +-
 tests/baselines/reference/es3-amd.js           |  2 +-
 .../baselines/reference/es3-declaration-amd.js |  2 +-
 tests/baselines/reference/es3-sourcemap-amd.js |  2 +-
 .../reference/es3-sourcemap-amd.sourcemap.txt  |  2 +-
 tests/baselines/reference/es5-amd.js           |  2 +-
 tests/baselines/reference/es5-commonjs.js      |  2 +-
 tests/baselines/reference/es5-commonjs4.js     |  2 +-
 .../baselines/reference/es5-declaration-amd.js |  2 +-
 tests/baselines/reference/es5-souremap-amd.js  |  2 +-
 .../reference/es5-souremap-amd.sourcemap.txt   |  2 +-
 tests/baselines/reference/es5-system.js        |  2 +-
 tests/baselines/reference/es5-umd.js           |  2 +-
 tests/baselines/reference/es5-umd2.js          |  2 +-
 tests/baselines/reference/es5-umd3.js          |  2 +-
 tests/baselines/reference/es5-umd4.js          |  2 +-
 .../es5ExportDefaultClassDeclaration.js        |  2 +-
 .../es5ExportDefaultClassDeclaration2.js       |  2 +-
 .../es5ExportDefaultClassDeclaration3.js       |  2 +-
 .../baselines/reference/es5ExportEqualsDts.js  |  2 +-
 .../reference/es5ModuleWithModuleGenAmd.js     |  2 +-
 .../es5ModuleWithModuleGenCommonjs.js          |  2 +-
 .../es5ModuleWithoutModuleGenTarget.js         |  2 +-
 tests/baselines/reference/es5andes6module.js   |  2 +-
 tests/baselines/reference/es6ClassTest.js      |  2 +-
 tests/baselines/reference/es6ClassTest2.js     |  2 +-
 tests/baselines/reference/es6ClassTest3.js     |  2 +-
 tests/baselines/reference/es6DeclOrdering.js   |  2 +-
 tests/baselines/reference/es6MemberScoping.js  |  2 +-
 .../reference/es6modulekindWithES5Target.js    |  2 +-
 .../reference/es6modulekindWithES5Target11.js  |  2 +-
 .../reference/es6modulekindWithES5Target2.js   |  2 +-
 .../reference/es6modulekindWithES5Target3.js   |  2 +-
 .../baselines/reference/escapedIdentifiers.js  |  2 +-
 tests/baselines/reference/exportPrivateType.js |  2 +-
 .../reference/expressionTypeNodeShouldError.js |  6 +++---
 .../extendAndImplementTheSameBaseType.js       |  2 +-
 .../extendAndImplementTheSameBaseType2.js      |  2 +-
 .../reference/extendNonClassSymbol1.js         |  2 +-
 .../reference/extendsClauseAlreadySeen.js      |  2 +-
 .../reference/extendsClauseAlreadySeen2.js     |  2 +-
 .../reference/externalModuleQualification.js   |  2 +-
 tests/baselines/reference/fatArrowSelf.js      |  2 +-
 tests/baselines/reference/flowInFinally1.js    |  2 +-
 tests/baselines/reference/fluentClasses.js     |  2 +-
 tests/baselines/reference/for-inStatements.js  |  2 +-
 .../reference/for-inStatementsInvalid.js       |  2 +-
 .../reference/forwardRefInClassProperties.js   |  2 +-
 .../functionAndPropertyNameConflict.js         |  2 +-
 .../reference/functionArgShadowing.js          |  2 +-
 .../functionExpressionContextualTyping1.js     |  2 +-
 .../reference/functionOverloadErrors.js        |  2 +-
 .../baselines/reference/functionOverloads5.js  |  2 +-
 .../baselines/reference/functionOverloads7.js  |  2 +-
 .../reference/functionOverloadsOutOfOrder.js   |  2 +-
 .../reference/functionSubtypingOfVarArgs.js    |  2 +-
 .../reference/functionSubtypingOfVarArgs2.js   |  2 +-
 .../reference/functionWithSameNameAsField.js   |  2 +-
 .../reference/functionsInClassExpressions.js   |  2 +-
 tests/baselines/reference/fuzzy.js             |  2 +-
 .../genericArrayWithoutTypeAnnotation.js       |  2 +-
 .../genericAssignmentCompatWithInterfaces1.js  |  2 +-
 .../genericBaseClassLiteralProperty.js         |  2 +-
 .../genericBaseClassLiteralProperty2.js        |  2 +-
 .../genericCallTypeArgumentInference.js        |  2 +-
 ...CallWithConstraintsTypeArgumentInference.js |  2 +-
 .../reference/genericCallWithFixedArguments.js |  2 +-
 .../genericCallbacksAndClassHierarchy.js       |  2 +-
 ...icClassPropertyInheritanceSpecialization.js |  2 +-
 ...ricClassWithFunctionTypedMemberArguments.js |  2 +-
 ...ricClassWithObjectTypeArgsAndConstraints.js |  2 +-
 .../reference/genericClassWithStaticFactory.js |  2 +-
 tests/baselines/reference/genericClasses4.js   |  2 +-
 .../reference/genericClassesInModule2.js       |  2 +-
 .../reference/genericCloduleInModule.js        |  2 +-
 .../reference/genericCloduleInModule2.js       |  2 +-
 .../reference/genericCloneReturnTypes.js       |  2 +-
 .../reference/genericCloneReturnTypes2.js      |  2 +-
 .../baselines/reference/genericConstraint1.js  |  2 +-
 .../baselines/reference/genericConstraint2.js  |  2 +-
 .../genericFunctionsWithOptionalParameters3.js |  2 +-
 tests/baselines/reference/genericImplements.js |  2 +-
 tests/baselines/reference/genericInstanceOf.js |  2 +-
 .../genericInterfaceImplementation.js          |  2 +-
 .../reference/genericMemberFunction.js         |  2 +-
 .../reference/genericObjectLitReturnType.js    |  2 +-
 .../reference/genericOfACloduleType1.js        |  2 +-
 .../reference/genericOfACloduleType2.js        |  2 +-
 .../reference/genericPrototypeProperty.js      |  2 +-
 ...nericRecursiveImplicitConstructorErrors2.js |  2 +-
 ...nericRecursiveImplicitConstructorErrors3.js |  2 +-
 .../genericReversingTypeParameters.js          |  2 +-
 .../genericReversingTypeParameters2.js         |  2 +-
 .../reference/genericSpecializations1.js       |  2 +-
 .../reference/genericSpecializations2.js       |  2 +-
 .../reference/genericSpecializations3.js       |  2 +-
 .../reference/genericTypeAssertions1.js        |  2 +-
 .../reference/genericTypeAssertions2.js        |  2 +-
 .../reference/genericTypeAssertions4.js        |  2 +-
 .../reference/genericTypeAssertions6.js        |  2 +-
 .../reference/genericTypeConstraints.js        |  2 +-
 .../genericTypeReferencesRequireTypeArgs.js    |  2 +-
 .../genericTypeWithCallableMembers.js          |  2 +-
 .../genericTypeWithNonGenericBaseMisMatch.js   |  2 +-
 .../reference/genericWithCallSignatures1.js    |  2 +-
 .../genericWithIndexerOfTypeParameterType1.js  |  2 +-
 .../genericWithIndexerOfTypeParameterType2.js  |  2 +-
 .../genericWithOpenTypeParameters1.js          |  2 +-
 .../genericsWithDuplicateTypeParameters1.js    |  2 +-
 .../genericsWithoutTypeParameters1.js          |  2 +-
 .../reference/getAndSetAsMemberNames.js        |  2 +-
 .../reference/getterControlFlowStrictNull.js   |  2 +-
 .../getterThatThrowsShouldNotNeedReturn.js     |  2 +-
 tests/baselines/reference/giant.js             |  2 +-
 .../baselines/reference/grammarAmbiguities1.js |  2 +-
 .../heterogeneousArrayAndOverloads.js          |  2 +-
 .../implementGenericWithMismatchedTypes.js     |  2 +-
 .../implementInterfaceAnyMemberWithVoid.js     |  2 +-
 .../reference/implementsClauseAlreadySeen.js   |  2 +-
 .../reference/implementsInClassExpression.js   |  2 +-
 .../implicitAnyAnyReturningFunction.js         |  2 +-
 .../reference/implicitAnyCastedValue.js        |  2 +-
 .../implicitAnyDeclareMemberWithoutType2.js    |  2 +-
 ...implicitAnyFunctionReturnNullOrUndefined.js |  2 +-
 .../baselines/reference/implicitAnyInCatch.js  |  2 +-
 .../importAndVariableDeclarationConflict2.js   |  2 +-
 tests/baselines/reference/importAsBaseClass.js |  2 +-
 .../importCallExpressionAsyncES3AMD.js         |  2 +-
 .../importCallExpressionAsyncES3CJS.js         |  2 +-
 .../importCallExpressionAsyncES3System.js      |  2 +-
 .../importCallExpressionAsyncES3UMD.js         |  2 +-
 .../importCallExpressionAsyncES5AMD.js         |  2 +-
 .../importCallExpressionAsyncES5CJS.js         |  2 +-
 .../importCallExpressionAsyncES5System.js      |  2 +-
 .../importCallExpressionAsyncES5UMD.js         |  2 +-
 .../reference/importCallExpressionES5AMD.js    |  2 +-
 .../reference/importCallExpressionES5CJS.js    |  2 +-
 .../reference/importCallExpressionES5System.js |  2 +-
 .../reference/importCallExpressionES5UMD.js    |  2 +-
 ...mportCallExpressionNoModuleKindSpecified.js |  4 ++--
 tests/baselines/reference/importHelpers.js     |  2 +-
 .../reference/importHelpersNoHelpers.js        |  2 +-
 .../reference/importHelpersNoModule.js         |  2 +-
 .../import_reference-exported-alias.js         |  2 +-
 .../import_reference-to-type-alias.js          |  2 +-
 .../importedAliasesInTypePositions.js          |  2 +-
 .../reference/inOperatorWithGeneric.js         |  2 +-
 ...patibleAssignmentOfIdenticallyNamedTypes.js |  2 +-
 tests/baselines/reference/incompatibleTypes.js |  2 +-
 .../reference/incrementOnTypeParameter.js      |  2 +-
 tests/baselines/reference/indexTypeCheck.js    |  2 +-
 .../reference/indexedAccessRelation.js         |  2 +-
 .../reference/indexedAccessTypeConstraints.js  |  2 +-
 .../indexerReturningTypeParameter1.js          |  2 +-
 .../baselines/reference/indexersInClassType.js |  2 +-
 .../inferFromGenericFunctionReturnTypes1.js    |  2 +-
 .../inferFromGenericFunctionReturnTypes2.js    |  2 +-
 .../inferParameterWithMethodCallInitializer.js |  2 +-
 .../inferentialTypingUsingApparentType3.js     |  2 +-
 .../inferringClassMembersFromAssignments.js    |  2 +-
 tests/baselines/reference/inheritance.js       |  2 +-
 tests/baselines/reference/inheritance1.js      |  2 +-
 ...ritanceGrandParentPrivateMemberCollision.js |  2 +-
 ...ntPrivateMemberCollisionWithPublicMember.js |  2 +-
 ...ntPublicMemberCollisionWithPrivateMember.js |  2 +-
 ...nheritanceMemberAccessorOverridingMethod.js |  2 +-
 .../inheritanceMemberFuncOverridingAccessor.js |  2 +-
 .../inheritanceMemberFuncOverridingMethod.js   |  2 +-
 .../inheritanceMemberFuncOverridingProperty.js |  2 +-
 ...nheritanceMemberPropertyOverridingMethod.js |  2 +-
 tests/baselines/reference/innerAliases2.js     |  2 +-
 .../innerTypeParameterShadowingOuterOne2.js    |  2 +-
 .../instanceAndStaticDeclarations1.js          |  2 +-
 .../instanceMemberAssignsToClassPrototype.js   |  2 +-
 ...instancePropertiesInheritedIntoClassType.js |  2 +-
 .../reference/instancePropertyInClassType.js   |  2 +-
 .../instanceofOperatorWithInvalidOperands.js   |  2 +-
 .../instantiatedBaseTypeConstraints.js         |  2 +-
 .../instantiatedReturnTypeContravariance.js    |  2 +-
 tests/baselines/reference/intTypeCheck.js      |  2 +-
 .../reference/interfaceClassMerging.js         |  2 +-
 .../reference/interfaceClassMerging2.js        |  2 +-
 .../reference/interfaceContextualType.js       |  2 +-
 .../reference/interfaceExtendingClass.js       |  2 +-
 .../reference/interfaceExtendingClass2.js      |  2 +-
 .../reference/interfaceExtendsClass1.js        |  2 +-
 .../interfaceExtendsClassWithPrivate1.js       |  2 +-
 .../interfaceExtendsClassWithPrivate2.js       |  2 +-
 .../reference/interfaceImplementation1.js      |  2 +-
 .../reference/interfaceImplementation3.js      |  2 +-
 .../reference/interfaceImplementation4.js      |  2 +-
 .../reference/interfaceImplementation7.js      |  2 +-
 .../baselines/reference/interfaceSubtyping.js  |  2 +-
 ...faceWithPropertyThatIsPrivateInBaseType2.js |  2 +-
 ...nalAliasClassInsideLocalModuleWithExport.js |  2 +-
 ...AliasClassInsideLocalModuleWithoutExport.js |  2 +-
 ...nsideLocalModuleWithoutExportAccessError.js |  2 +-
 ...AliasClassInsideTopLevelModuleWithExport.js |  2 +-
 ...asClassInsideTopLevelModuleWithoutExport.js |  2 +-
 .../reference/invalidNewTarget.es5.js          |  2 +-
 .../reference/invalidReturnStatements.js       |  2 +-
 .../baselines/reference/invalidStaticField.js  |  2 +-
 ...invalidThisEmitInContextualObjectLiteral.js |  2 +-
 ...lationClassMethodContainingArrowFunction.js |  2 +-
 .../jsxFactoryQualifiedNameWithEs5.js          |  2 +-
 .../baselines/reference/jsxInExtendsClause.js  |  2 +-
 tests/baselines/reference/jsxViaImport.2.js    |  2 +-
 tests/baselines/reference/jsxViaImport.js      |  2 +-
 .../reference/keyofAndIndexedAccess.js         |  2 +-
 tests/baselines/reference/lambdaArgCrash.js    |  2 +-
 tests/baselines/reference/lambdaPropSelf.js    |  2 +-
 tests/baselines/reference/lift.js              |  2 +-
 tests/baselines/reference/listFailure.js       |  2 +-
 tests/baselines/reference/literalTypes2.js     |  2 +-
 tests/baselines/reference/localTypes1.js       |  2 +-
 tests/baselines/reference/localTypes5.js       |  2 +-
 .../reference/looseThisTypeInFunctions.js      |  2 +-
 tests/baselines/reference/mappedTypeErrors.js  |  2 +-
 .../reference/mappedTypePartialConstraints.js  |  2 +-
 .../reference/matchReturnTypeInAllBranches.js  |  2 +-
 .../memberFunctionsWithPrivateOverloads.js     |  2 +-
 .../memberFunctionsWithPublicOverloads.js      |  2 +-
 ...emberFunctionsWithPublicPrivateOverloads.js |  2 +-
 .../baselines/reference/mergedDeclarations5.js |  4 ++--
 .../baselines/reference/mergedDeclarations6.js |  4 ++--
 .../reference/mergedInheritedClassInterface.js |  2 +-
 .../reference/methodContainingLocalFunction.js |  2 +-
 .../methodSignatureDeclarationEmit1.js         |  2 +-
 .../reference/mismatchedGenericArguments1.js   |  2 +-
 .../reference/missingDecoratorType.js          |  2 +-
 .../missingPropertiesOfClassExpression.js      |  2 +-
 .../reference/missingReturnStatement.js        |  2 +-
 .../reference/missingReturnStatement1.js       |  2 +-
 tests/baselines/reference/missingSelf.js       |  2 +-
 .../mixedStaticAndInstanceClassMembers.js      |  2 +-
 .../reference/mixinAccessModifiers.js          |  2 +-
 .../reference/mixinClassesAnnotated.js         |  2 +-
 .../reference/mixinClassesAnonymous.js         |  2 +-
 .../baselines/reference/mixinClassesMembers.js |  2 +-
 .../reference/mixinPrivateAndProtected.js      |  2 +-
 .../mixingStaticAndInstanceOverloads.js        |  2 +-
 ...difierOnClassDeclarationMemberInFunction.js |  2 +-
 ...odifierOnClassExpressionMemberInFunction.js |  2 +-
 .../reference/moduleAliasInterface.js          |  2 +-
 .../baselines/reference/moduleCodeGenTest5.js  |  2 +-
 .../moduleMemberWithoutTypeAnnotation1.js      |  2 +-
 tests/baselines/reference/moduleMerge.js       |  2 +-
 .../baselines/reference/moduleNewExportBug.js  |  2 +-
 .../reference/moduleReopenedTypeOtherBlock.js  |  2 +-
 .../reference/moduleReopenedTypeSameBlock.js   |  2 +-
 .../reference/moduleVisibilityTest1.js         |  2 +-
 .../reference/moduleVisibilityTest2.js         |  2 +-
 tests/baselines/reference/moduledecl.js        |  2 +-
 tests/baselines/reference/multiImportExport.js |  2 +-
 .../baselines/reference/multiModuleClodule1.js |  2 +-
 .../reference/multipleDeclarations.js          |  2 +-
 .../baselines/reference/multipleInheritance.js |  2 +-
 .../mutuallyRecursiveGenericBaseTypes2.js      |  2 +-
 .../reference/narrowTypeByInstanceof.js        |  2 +-
 .../reference/narrowedConstInMethod.js         |  2 +-
 tests/baselines/reference/nestedLoops.js       |  2 +-
 tests/baselines/reference/nestedSelf.js        |  2 +-
 tests/baselines/reference/neverType.js         |  2 +-
 tests/baselines/reference/newArrays.js         |  2 +-
 ...llisionThisExpressionAndLocalVarInMethod.js |  2 +-
 ...oImplicitAnyDestructuringInPrivateMethod.js |  2 +-
 .../noImplicitAnyForMethodParameters.js        |  2 +-
 .../noImplicitAnyParametersInClass.js          |  2 +-
 .../reference/noTypeArgumentOnReturnType1.js   |  2 +-
 .../reference/noUnusedLocals_selfReference.js  | 17 +++++++++++++++++
 .../nonMergedDeclarationsAndOverloads.js       |  2 +-
 ...ricIndexerConstrainsPropertyDeclarations.js |  2 +-
 ...icIndexerConstrainsPropertyDeclarations2.js |  2 +-
 .../reference/numericIndexerConstraint1.js     |  2 +-
 .../reference/numericIndexerConstraint2.js     |  2 +-
 .../objectCreationOfElementAccessExpression.js |  2 +-
 .../reference/objectRestParameterES5.js        |  2 +-
 tests/baselines/reference/objectSpread.js      |  2 +-
 .../reference/objectSpreadNegative.js          |  2 +-
 .../objectTypeHidingMembersOfExtendedObject.js |  2 +-
 .../objectTypeHidingMembersOfObject.js         |  2 +-
 ...ypeHidingMembersOfObjectAssignmentCompat.js |  2 +-
 ...peHidingMembersOfObjectAssignmentCompat2.js |  2 +-
 .../objectTypesIdentityWithCallSignatures.js   |  2 +-
 .../objectTypesIdentityWithCallSignatures2.js  |  2 +-
 ...tyWithCallSignaturesDifferingParamCounts.js |  2 +-
 ...sIdentityWithCallSignaturesWithOverloads.js |  2 +-
 ...ctTypesIdentityWithGenericCallSignatures.js |  2 +-
 ...tTypesIdentityWithGenericCallSignatures2.js |  2 +-
 ...ericCallSignaturesDifferingByConstraints.js |  2 +-
 ...ricCallSignaturesDifferingByConstraints2.js |  2 +-
 ...ricCallSignaturesDifferingByConstraints3.js |  2 +-
 ...nericCallSignaturesDifferingByReturnType.js |  2 +-
 ...ericCallSignaturesDifferingByReturnType2.js |  2 +-
 ...llSignaturesDifferingTypeParameterCounts.js |  2 +-
 ...allSignaturesDifferingTypeParameterNames.js |  2 +-
 ...yWithGenericCallSignaturesOptionalParams.js |  2 +-
 ...WithGenericCallSignaturesOptionalParams2.js |  2 +-
 ...WithGenericCallSignaturesOptionalParams3.js |  2 +-
 .../objectTypesWithOptionalProperties2.js      |  2 +-
 .../reference/optionalArgsWithDefaultValues.js |  2 +-
 .../reference/optionalConstructorArgInSuper.js |  2 +-
 tests/baselines/reference/optionalMethods.js   |  2 +-
 .../reference/optionalParamArgsTest.js         |  2 +-
 .../reference/optionalParamInOverride.js       |  2 +-
 tests/baselines/reference/out-flag.js          |  2 +-
 .../baselines/reference/out-flag.sourcemap.txt |  2 +-
 .../reference/overloadConsecutiveness.js       |  2 +-
 .../reference/overloadModifiersMustAgree.js    |  2 +-
 .../overloadOnConstConstraintChecks1.js        |  2 +-
 .../overloadOnConstConstraintChecks2.js        |  2 +-
 .../overloadOnConstConstraintChecks3.js        |  2 +-
 .../overloadOnConstConstraintChecks4.js        |  2 +-
 ...onstInBaseWithBadImplementationInDerived.js |  2 +-
 .../reference/overloadOnConstInCallback1.js    |  2 +-
 .../reference/overloadOnConstInheritance4.js   |  2 +-
 .../overloadOnConstNoAnyImplementation2.js     |  2 +-
 ...overloadOnConstNoNonSpecializedSignature.js |  2 +-
 .../overloadOnConstNoStringImplementation2.js  |  2 +-
 .../overloadOnConstantsInvalidOverload1.js     |  2 +-
 .../overloadResolutionOnDefaultConstructor1.js |  2 +-
 .../reference/overloadingOnConstants1.js       |  2 +-
 .../reference/overloadsWithinClasses.js        |  2 +-
 .../overrideBaseIntersectionMethod.js          |  2 +-
 .../parameterInitializersForwardReferencing.js |  2 +-
 .../parameterNamesInTypeParameterList.js       |  2 +-
 .../parameterPropertyOutsideConstructor.js     |  2 +-
 .../parametersWithNoAnnotationAreAny.js        |  2 +-
 tests/baselines/reference/parser509667.js      |  2 +-
 tests/baselines/reference/parser553699.js      |  2 +-
 tests/baselines/reference/parser618973.js      |  2 +-
 tests/baselines/reference/parserAstSpans1.js   |  2 +-
 tests/baselines/reference/parserClass1.js      |  2 +-
 .../reference/parserClassDeclaration11.js      |  2 +-
 .../reference/parserClassDeclaration13.js      |  2 +-
 .../reference/parserClassDeclaration16.js      |  2 +-
 .../reference/parserClassDeclaration19.js      |  2 +-
 .../reference/parserClassDeclaration20.js      |  2 +-
 .../reference/parserClassDeclaration21.js      |  2 +-
 .../reference/parserClassDeclaration22.js      |  2 +-
 .../parserES5ComputedPropertyName3.js          |  2 +-
 .../reference/parserES5SymbolProperty7.js      |  2 +-
 .../reference/parserErrantSemicolonInClass1.js |  2 +-
 .../parserErrorRecoveryIfStatement1.js         |  2 +-
 .../parserErrorRecoveryIfStatement2.js         |  2 +-
 .../parserErrorRecoveryIfStatement3.js         |  2 +-
 .../parserErrorRecoveryIfStatement4.js         |  2 +-
 .../parserErrorRecoveryIfStatement5.js         |  2 +-
 .../parserErrorRecoveryIfStatement6.js         |  2 +-
 .../reference/parserErrorRecovery_Block3.js    |  2 +-
 ...rErrorRecovery_IncompleteMemberVariable1.js |  2 +-
 ...rErrorRecovery_IncompleteMemberVariable2.js |  2 +-
 .../parserMemberFunctionDeclaration1.js        |  2 +-
 .../parserMemberFunctionDeclaration4.js        |  2 +-
 .../parserMemberFunctionDeclaration5.js        |  2 +-
 ...serMemberFunctionDeclarationAmbiguities1.js |  2 +-
 .../reference/parserMissingLambdaOpenBrace1.js |  2 +-
 .../reference/parserParameterList1.js          |  2 +-
 .../reference/parserParameterList10.js         |  2 +-
 .../reference/parserParameterList16.js         |  2 +-
 .../reference/parserParameterList2.js          |  2 +-
 .../reference/parserParameterList3.js          |  2 +-
 .../reference/parserParameterList9.js          |  2 +-
 tests/baselines/reference/parserRealSource1.js |  2 +-
 .../baselines/reference/parserRealSource10.js  |  2 +-
 .../baselines/reference/parserRealSource11.js  |  2 +-
 .../baselines/reference/parserRealSource12.js  |  2 +-
 .../baselines/reference/parserRealSource14.js  |  2 +-
 tests/baselines/reference/parserRealSource4.js |  2 +-
 tests/baselines/reference/parserRealSource5.js |  2 +-
 tests/baselines/reference/parserRealSource6.js |  2 +-
 tests/baselines/reference/parserRealSource8.js |  2 +-
 tests/baselines/reference/parserRealSource9.js |  2 +-
 .../reference/parserSuperExpression1.js        |  2 +-
 .../reference/parserSuperExpression2.js        |  2 +-
 .../reference/parserSuperExpression3.js        |  2 +-
 .../reference/parserSuperExpression4.js        |  2 +-
 tests/baselines/reference/parserharness.js     |  2 +-
 tests/baselines/reference/parserindenter.js    |  2 +-
 ...ssRecoversWhenHittingUnexpectedSemicolon.js |  2 +-
 .../reference/primitiveConstraints2.js         |  2 +-
 tests/baselines/reference/primitiveMembers.js  |  2 +-
 tests/baselines/reference/privacyClass.js      |  2 +-
 .../privacyClassExtendsClauseDeclFile.js       |  4 ++--
 tests/baselines/reference/privacyFunc.js       |  2 +-
 ...yFunctionCannotNameParameterTypeDeclFile.js |  2 +-
 ...vacyFunctionCannotNameReturnTypeDeclFile.js |  2 +-
 .../privacyFunctionParameterDeclFile.js        |  4 ++--
 .../privacyFunctionReturnTypeDeclFile.js       |  4 ++--
 tests/baselines/reference/privacyGetter.js     |  2 +-
 tests/baselines/reference/privacyGloClass.js   |  2 +-
 tests/baselines/reference/privacyGloFunc.js    |  2 +-
 tests/baselines/reference/privacyGloGetter.js  |  2 +-
 .../baselines/reference/privacyGloInterface.js |  2 +-
 tests/baselines/reference/privacyGloVar.js     |  2 +-
 tests/baselines/reference/privacyInterface.js  |  2 +-
 .../privacyTypeParameterOfFunction.js          |  2 +-
 .../privacyTypeParameterOfFunctionDeclFile.js  |  2 +-
 .../reference/privacyTypeParametersOfClass.js  |  2 +-
 .../privacyTypeParametersOfClassDeclFile.js    |  2 +-
 tests/baselines/reference/privacyVar.js        |  2 +-
 .../reference/privateAccessInSubclass1.js      |  2 +-
 ...rivateClassPropertyAccessibleWithinClass.js |  2 +-
 ...ClassPropertyAccessibleWithinNestedClass.js |  2 +-
 .../privateInstanceMemberAccessibility.js      |  2 +-
 .../reference/privateInstanceVisibility.js     |  2 +-
 ...ctedMembersAreNotAccessibleDestructuring.js |  2 +-
 tests/baselines/reference/privateVisibility.js |  2 +-
 tests/baselines/reference/privateVisibles.js   |  2 +-
 .../amd/li'b/class'A.js                        |  2 +-
 .../node/li'b/class'A.js                       |  2 +-
 .../amd/fs.js                                  |  2 +-
 .../node/fs.js                                 |  2 +-
 tests/baselines/reference/promiseChaining.js   |  2 +-
 tests/baselines/reference/promiseChaining1.js  |  2 +-
 tests/baselines/reference/promiseChaining2.js  |  2 +-
 ...ertyAccessOnTypeParameterWithConstraints.js |  2 +-
 ...rtyAccessOnTypeParameterWithConstraints2.js |  2 +-
 ...rtyAccessOnTypeParameterWithConstraints3.js |  2 +-
 ...rtyAccessOnTypeParameterWithConstraints4.js |  2 +-
 ...rtyAccessOnTypeParameterWithConstraints5.js |  2 +-
 ...yAccessOnTypeParameterWithoutConstraints.js |  2 +-
 .../propertyAndFunctionWithSameName.js         |  2 +-
 tests/baselines/reference/propertyOrdering.js  |  2 +-
 tests/baselines/reference/propertyOrdering2.js |  2 +-
 ...tectedClassPropertyAccessibleWithinClass.js |  2 +-
 ...ClassPropertyAccessibleWithinNestedClass.js |  2 +-
 ...ssPropertyAccessibleWithinNestedSubclass.js |  2 +-
 ...sPropertyAccessibleWithinNestedSubclass1.js |  2 +-
 ...tedClassPropertyAccessibleWithinSubclass.js |  2 +-
 ...edClassPropertyAccessibleWithinSubclass2.js |  2 +-
 ...edClassPropertyAccessibleWithinSubclass3.js |  2 +-
 .../protectedInstanceMemberAccessibility.js    |  2 +-
 tests/baselines/reference/protectedMembers.js  |  2 +-
 .../baselines/reference/quotedFunctionName1.js |  2 +-
 .../baselines/reference/quotedPropertyName3.js |  2 +-
 .../readonlyInNonPropertyParameters.js         |  2 +-
 tests/baselines/reference/readonlyMembers.js   |  2 +-
 .../recursiveBaseConstructorCreation1.js       |  2 +-
 .../reference/recursiveClassReferenceTest.js   |  2 +-
 .../recursiveClassReferenceTest.sourcemap.txt  |  2 +-
 .../reference/recursiveComplicatedClasses.js   |  2 +-
 .../reference/recursiveInheritance3.js         |  2 +-
 .../reference/requireEmitSemicolon.js          |  2 +-
 .../reference/requiredInitializedParameter2.js |  2 +-
 .../reference/requiredInitializedParameter3.js |  2 +-
 .../reference/requiredInitializedParameter4.js |  2 +-
 ...ClassDeclarationWhenInBaseTypeResolution.js |  2 +-
 .../restParameterAssignmentCompatibility.js    |  2 +-
 ...restParameterWithoutAnnotationIsAnyArray.js |  2 +-
 .../reference/restParametersOfNonArrayTypes.js |  2 +-
 .../restParametersOfNonArrayTypes2.js          |  2 +-
 .../restParametersWithArrayTypeAnnotations.js  |  2 +-
 .../reference/returnInConstructor1.js          |  2 +-
 tests/baselines/reference/returnStatements.js  |  2 +-
 .../reference/returnTypeTypeArguments.js       |  2 +-
 ...opeCheckExtendedClassInsidePublicMethod2.js |  2 +-
 .../reference/scopeCheckInsidePublicMethod1.js |  2 +-
 .../reference/scopeResolutionIdentifiers.js    |  2 +-
 tests/baselines/reference/selfInCallback.js    |  2 +-
 tests/baselines/reference/selfInLambdas.js     |  2 +-
 .../selfReferencesInFunctionParameters.js      |  2 +-
 .../reference/shadowPrivateMembers.js          |  2 +-
 .../sigantureIsSubTypeIfTheyAreIdentical.js    |  2 +-
 ...ureInstantiationWithRecursiveConstraints.js |  2 +-
 .../baselines/reference/sourceMap-Comments.js  |  2 +-
 .../reference/sourceMap-Comments.sourcemap.txt |  2 +-
 .../reference/sourceMap-FileWithComments.js    |  2 +-
 .../sourceMap-FileWithComments.sourcemap.txt   |  2 +-
 tests/baselines/reference/sourceMapSample.js   |  2 +-
 .../reference/sourceMapSample.sourcemap.txt    |  2 +-
 .../reference/sourceMapValidationClass.js      |  2 +-
 .../sourceMapValidationClass.sourcemap.txt     |  2 +-
 .../reference/sourceMapValidationClasses.js    |  2 +-
 .../sourceMapValidationClasses.sourcemap.txt   |  2 +-
 .../reference/sourceMapValidationDecorators.js |  2 +-
 ...sourceMapValidationDecorators.sourcemap.txt |  2 +-
 .../specializedOverloadWithRestParameters.js   |  2 +-
 ...ureIsNotSubtypeOfNonSpecializedSignature.js |  2 +-
 ...natureIsSubtypeOfNonSpecializedSignature.js |  2 +-
 tests/baselines/reference/spreadMethods.js     |  2 +-
 .../reference/staticAndMemberFunctions.js      |  2 +-
 .../staticAndNonStaticPropertiesSameName.js    |  2 +-
 .../reference/staticClassMemberError.js        |  2 +-
 tests/baselines/reference/staticClassProps.js  |  2 +-
 tests/baselines/reference/staticFactory1.js    |  2 +-
 .../reference/staticInstanceResolution.js      |  2 +-
 .../reference/staticInstanceResolution4.js     |  2 +-
 .../reference/staticMemberExportAccess.js      |  2 +-
 ...sAndPublicMemberOfAnotherClassAssignment.js |  2 +-
 ...odWithTypeParameterExtendsClauseDeclFile.js |  2 +-
 .../reference/staticOffOfInstance1.js          |  2 +-
 .../reference/staticOffOfInstance2.js          |  2 +-
 .../staticPropertyAndFunctionWithSameName.js   |  2 +-
 .../reference/staticPropertyNameConflicts.js   |  2 +-
 .../reference/staticPropertyNotInClassType.js  |  2 +-
 ...strictModeReservedWordInClassDeclaration.js |  2 +-
 .../strictModeUseContextualKeyword.js          |  2 +-
 ...ingIndexerConstrainsPropertyDeclarations.js |  2 +-
 ...ngIndexerConstrainsPropertyDeclarations2.js |  2 +-
 .../stringLiteralTypeIsSubtypeOfString.js      |  2 +-
 ...ngLiteralTypesInImplementationSignatures.js |  2 +-
 ...gLiteralTypesInImplementationSignatures2.js |  2 +-
 tests/baselines/reference/stripInternal1.js    |  2 +-
 tests/baselines/reference/super.js             |  2 +-
 tests/baselines/reference/super1.js            |  2 +-
 tests/baselines/reference/super2.js            |  2 +-
 tests/baselines/reference/superAccess.js       |  2 +-
 tests/baselines/reference/superAccess2.js      |  2 +-
 .../reference/superAccessInFatArrow1.js        |  2 +-
 .../reference/superCallInNonStaticMethod.js    |  2 +-
 .../superCallInsideObjectLiteralExpression.js  |  2 +-
 .../reference/superCallOutsideConstructor.js   |  2 +-
 .../superCallParameterContextualTyping3.js     |  2 +-
 .../reference/superCallWithMissingBaseClass.js |  2 +-
 .../reference/superCallsInConstructor.js       |  2 +-
 tests/baselines/reference/superErrors.js       |  2 +-
 .../superHasMethodsFromMergedInterface.js      |  2 +-
 .../baselines/reference/superInCatchBlock1.js  |  2 +-
 .../reference/superInConstructorParam1.js      |  2 +-
 tests/baselines/reference/superInLambdas.js    |  2 +-
 .../reference/superInObjectLiterals_ES5.js     |  2 +-
 .../baselines/reference/superPropertyAccess.js |  2 +-
 .../reference/superPropertyAccess1.js          |  2 +-
 ...cessInComputedPropertiesOfNestedType_ES5.js |  2 +-
 .../superPropertyAccessInSuperCall01.js        |  2 +-
 .../reference/superPropertyAccessNoError.js    |  2 +-
 .../reference/superPropertyAccess_ES5.js       |  2 +-
 ...uperPropertyInConstructorBeforeSuperCall.js |  2 +-
 .../reference/superSymbolIndexedAccess5.js     |  2 +-
 .../reference/superWithTypeArgument3.js        |  2 +-
 ...nside-object-literal-getters-and-setters.js |  2 +-
 tests/baselines/reference/thisBinding.js       |  2 +-
 tests/baselines/reference/thisCapture1.js      |  2 +-
 ...ressionInCallExpressionWithTypeArguments.js |  2 +-
 .../reference/thisInConstructorParameter2.js   |  2 +-
 .../reference/thisInInnerFunctions.js          |  2 +-
 tests/baselines/reference/thisInLambda.js      |  2 +-
 .../reference/thisInObjectLiterals.js          |  2 +-
 .../reference/thisInOuterClassBody.js          |  2 +-
 .../thisInPropertyBoundDeclarations.js         |  2 +-
 .../reference/thisTypeAndConstraints.js        |  2 +-
 .../reference/thisTypeAsConstraint.js          |  2 +-
 tests/baselines/reference/thisTypeErrors.js    |  2 +-
 tests/baselines/reference/thisTypeInClasses.js |  2 +-
 .../baselines/reference/thisTypeInFunctions.js |  2 +-
 .../reference/thisTypeInFunctionsNegative.js   |  2 +-
 .../reference/thisWhenTypeCheckFails.js        |  2 +-
 .../reference/throwInEnclosingStatements.js    |  2 +-
 tests/baselines/reference/topLevel.js          |  2 +-
 ...trailingCommaInHeterogenousArrayLiteral1.js |  2 +-
 .../reference/tsxAttributeResolution10.js      |  2 +-
 .../reference/tsxAttributeResolution11.js      |  2 +-
 .../reference/tsxAttributeResolution15.js      |  2 +-
 .../reference/tsxAttributeResolution16.js      |  2 +-
 .../reference/tsxAttributeResolution9.js       |  2 +-
 .../tsxCorrectlyParseLessThanComparison1.js    |  2 +-
 .../tsxDefaultAttributesResolution1.js         |  2 +-
 .../tsxDefaultAttributesResolution2.js         |  2 +-
 .../tsxDefaultAttributesResolution3.js         |  2 +-
 .../baselines/reference/tsxDynamicTagName5.js  |  2 +-
 .../baselines/reference/tsxDynamicTagName7.js  |  2 +-
 .../baselines/reference/tsxDynamicTagName8.js  |  2 +-
 .../baselines/reference/tsxDynamicTagName9.js  |  2 +-
 tests/baselines/reference/tsxEmit1.js          |  2 +-
 .../reference/tsxExternalModuleEmit1.js        |  4 ++--
 .../reference/tsxGenericAttributesType3.js     |  2 +-
 .../reference/tsxGenericAttributesType4.js     |  2 +-
 .../reference/tsxGenericAttributesType5.js     |  2 +-
 .../reference/tsxGenericAttributesType6.js     |  2 +-
 .../reference/tsxGenericAttributesType9.js     |  2 +-
 tests/baselines/reference/tsxReactEmit1.js     |  2 +-
 .../tsxSpreadAttributesResolution1.js          |  2 +-
 .../tsxSpreadAttributesResolution10.js         |  2 +-
 .../tsxSpreadAttributesResolution11.js         |  2 +-
 .../tsxSpreadAttributesResolution12.js         |  2 +-
 .../tsxSpreadAttributesResolution2.js          |  2 +-
 .../tsxSpreadAttributesResolution3.js          |  2 +-
 .../tsxSpreadAttributesResolution4.js          |  2 +-
 .../tsxSpreadAttributesResolution5.js          |  2 +-
 .../tsxSpreadAttributesResolution6.js          |  2 +-
 .../tsxSpreadAttributesResolution7.js          |  2 +-
 .../tsxSpreadAttributesResolution8.js          |  2 +-
 .../tsxSpreadAttributesResolution9.js          |  2 +-
 .../tsxStatelessFunctionComponents2.js         |  2 +-
 .../reference/tsxUnionElementType3.js          |  2 +-
 .../reference/tsxUnionElementType4.js          |  2 +-
 .../reference/tsxUnionTypeComponent1.js        |  2 +-
 .../reference/typeCheckTypeArgument.js         |  2 +-
 .../typeConstraintsWithConstructSignatures.js  |  2 +-
 tests/baselines/reference/typeGuardFunction.js |  2 +-
 .../reference/typeGuardFunctionOfFormThis.js   |  2 +-
 .../typeGuardFunctionOfFormThisErrors.js       |  2 +-
 .../reference/typeGuardsInClassMethods.js      |  2 +-
 .../reference/typeGuardsInProperties.js        |  2 +-
 .../reference/typeGuardsOnClassProperty.js     |  2 +-
 .../reference/typeInferenceLiteralUnion.js     |  2 +-
 .../typeInferenceReturnTypeCallback.js         |  2 +-
 tests/baselines/reference/typeOfThis.js        |  2 +-
 .../reference/typeOfThisInInstanceMember.js    |  2 +-
 .../reference/typeOfThisInInstanceMember2.js   |  2 +-
 .../reference/typeOfThisInMemberFunctions.js   |  2 +-
 .../typeParameterAssignmentCompat1.js          |  2 +-
 .../reference/typeParameterExtendingUnion1.js  |  2 +-
 .../reference/typeParameterExtendingUnion2.js  |  2 +-
 ...eParameterUsedAsTypeParameterConstraint4.js |  2 +-
 .../typeParameterWithInvalidConstraintType.js  |  2 +-
 ...peParametersAndParametersInComputedNames.js |  2 +-
 .../typeParametersAreIdenticalToThemselves.js  |  2 +-
 .../typeParametersAvailableInNestedScope.js    |  2 +-
 tests/baselines/reference/typeQueryOnClass.js  |  2 +-
 .../reference/typeQueryWithReservedWords.js    |  2 +-
 tests/baselines/reference/typeRelationships.js |  2 +-
 tests/baselines/reference/typeResolution.js    |  2 +-
 .../reference/typeResolution.sourcemap.txt     |  2 +-
 .../reference/typeVariableTypeGuards.js        |  2 +-
 .../reference/typedGenericPrototypeMember.js   |  2 +-
 tests/baselines/reference/typeofClass2.js      |  2 +-
 .../typesWithSpecializedCallSignatures.js      |  2 +-
 tests/baselines/reference/undeclaredMethod.js  |  2 +-
 .../baselines/reference/underscoreMapFirst.js  |  2 +-
 .../reference/unionTypeEquivalence.js          |  2 +-
 .../reference/unionTypeFromArrayLiteral.js     |  2 +-
 .../reference/unionTypesAssignability.js       |  2 +-
 .../reference/unknownTypeArgOnCall.js          |  2 +-
 .../reference/unspecializedConstraints.js      |  2 +-
 .../reference/unusedClassesinModule1.js        |  2 +-
 .../unusedIdentifiersConsolidated1.js          |  2 +-
 tests/baselines/reference/unusedImports10.js   |  2 +-
 tests/baselines/reference/unusedImports2.js    |  2 +-
 tests/baselines/reference/unusedImports3.js    |  2 +-
 tests/baselines/reference/unusedImports4.js    |  2 +-
 tests/baselines/reference/unusedImports5.js    |  2 +-
 tests/baselines/reference/unusedImports6.js    |  2 +-
 tests/baselines/reference/unusedImports7.js    |  2 +-
 tests/baselines/reference/unusedImports8.js    |  2 +-
 tests/baselines/reference/unusedImports9.js    |  2 +-
 .../reference/unusedInvalidTypeArguments.js    |  2 +-
 .../baselines/reference/unusedLocalProperty.js |  2 +-
 .../reference/unusedLocalsAndParameters.js     |  2 +-
 .../unusedLocalsAndParametersDeferred.js       |  2 +-
 ...sedLocalsAndParametersOverloadSignatures.js |  2 +-
 .../reference/unusedLocalsInMethod1.js         |  2 +-
 .../reference/unusedLocalsInMethod2.js         |  2 +-
 .../reference/unusedLocalsInMethod3.js         |  2 +-
 ...edMultipleParameters1InMethodDeclaration.js |  2 +-
 ...edMultipleParameters2InMethodDeclaration.js |  2 +-
 .../reference/unusedParametersInLambda1.js     |  2 +-
 .../reference/unusedParametersInLambda2.js     |  2 +-
 .../reference/unusedParametersThis.js          |  2 +-
 .../reference/unusedPrivateMembers.js          |  2 +-
 .../reference/unusedPrivateMethodInClass1.js   |  2 +-
 .../reference/unusedPrivateMethodInClass2.js   |  2 +-
 .../reference/unusedPrivateMethodInClass3.js   |  2 +-
 .../reference/unusedPrivateMethodInClass4.js   |  2 +-
 .../reference/unusedPrivateVariableInClass4.js |  2 +-
 ...unusedSingleParameterInMethodDeclaration.js |  2 +-
 .../reference/unusedTypeParameterInLambda1.js  |  2 +-
 .../reference/unusedTypeParameterInLambda2.js  |  2 +-
 .../reference/unusedTypeParameterInMethod1.js  |  2 +-
 .../reference/unusedTypeParameterInMethod2.js  |  2 +-
 .../reference/unusedTypeParameterInMethod3.js  |  2 +-
 .../reference/unusedTypeParameterInMethod4.js  |  2 +-
 .../reference/unusedTypeParameters2.js         |  2 +-
 .../reference/unusedTypeParameters3.js         |  2 +-
 .../reference/unusedVariablesinNamespaces2.js  |  2 +-
 .../reference/unusedVariablesinNamespaces3.js  |  2 +-
 tests/baselines/reference/vararg.js            |  2 +-
 ...DeclaratorResolvedDuringContextualTyping.js |  2 +-
 .../reference/visibilityOfTypeParameters.js    |  2 +-
 tests/baselines/reference/witness.js           |  2 +-
 .../wrappedAndRecursiveConstraints.js          |  2 +-
 .../wrappedAndRecursiveConstraints3.js         |  2 +-
 .../wrappedAndRecursiveConstraints4.js         |  2 +-
 983 files changed, 1017 insertions(+), 1000 deletions(-)

diff --git a/tests/baselines/reference/2dArrays.js b/tests/baselines/reference/2dArrays.js
index df4fe99cb9..6efc06c930 100644
--- a/tests/baselines/reference/2dArrays.js
+++ b/tests/baselines/reference/2dArrays.js
@@ -19,7 +19,7 @@ class Board {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/ClassDeclaration11.js b/tests/baselines/reference/ClassDeclaration11.js
index e7a0cd57bf..e38340fe71 100644
--- a/tests/baselines/reference/ClassDeclaration11.js
+++ b/tests/baselines/reference/ClassDeclaration11.js
@@ -8,7 +8,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/ClassDeclaration13.js b/tests/baselines/reference/ClassDeclaration13.js
index f5cd1cf9dd..b5c601da63 100644
--- a/tests/baselines/reference/ClassDeclaration13.js
+++ b/tests/baselines/reference/ClassDeclaration13.js
@@ -8,7 +8,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/ClassDeclaration21.js b/tests/baselines/reference/ClassDeclaration21.js
index f45db91d3c..3660124546 100644
--- a/tests/baselines/reference/ClassDeclaration21.js
+++ b/tests/baselines/reference/ClassDeclaration21.js
@@ -8,7 +8,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/ClassDeclaration22.js b/tests/baselines/reference/ClassDeclaration22.js
index cc3501f34b..339f67ed9a 100644
--- a/tests/baselines/reference/ClassDeclaration22.js
+++ b/tests/baselines/reference/ClassDeclaration22.js
@@ -8,7 +8,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/ES5For-ofTypeCheck10.js b/tests/baselines/reference/ES5For-ofTypeCheck10.js
index 218c3ac481..24c2aeb122 100644
--- a/tests/baselines/reference/ES5For-ofTypeCheck10.js
+++ b/tests/baselines/reference/ES5For-ofTypeCheck10.js
@@ -18,7 +18,7 @@ for (var v of new StringIterator) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/ES5SymbolProperty2.js b/tests/baselines/reference/ES5SymbolProperty2.js
index ba993fc8aa..025ccbabe3 100644
--- a/tests/baselines/reference/ES5SymbolProperty2.js
+++ b/tests/baselines/reference/ES5SymbolProperty2.js
@@ -14,7 +14,7 @@ module M {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/ES5SymbolProperty3.js b/tests/baselines/reference/ES5SymbolProperty3.js
index aa8858d628..5e5fb48acb 100644
--- a/tests/baselines/reference/ES5SymbolProperty3.js
+++ b/tests/baselines/reference/ES5SymbolProperty3.js
@@ -11,7 +11,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/ES5SymbolProperty4.js b/tests/baselines/reference/ES5SymbolProperty4.js
index 445d2c287a..01d11b7c37 100644
--- a/tests/baselines/reference/ES5SymbolProperty4.js
+++ b/tests/baselines/reference/ES5SymbolProperty4.js
@@ -11,7 +11,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/ES5SymbolProperty5.js b/tests/baselines/reference/ES5SymbolProperty5.js
index 7080a4731c..8a9fccdac2 100644
--- a/tests/baselines/reference/ES5SymbolProperty5.js
+++ b/tests/baselines/reference/ES5SymbolProperty5.js
@@ -11,7 +11,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/ES5SymbolProperty6.js b/tests/baselines/reference/ES5SymbolProperty6.js
index 227b858ae1..f75ad8f9cd 100644
--- a/tests/baselines/reference/ES5SymbolProperty6.js
+++ b/tests/baselines/reference/ES5SymbolProperty6.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/ES5SymbolProperty7.js b/tests/baselines/reference/ES5SymbolProperty7.js
index dab10c6ed9..7959bba459 100644
--- a/tests/baselines/reference/ES5SymbolProperty7.js
+++ b/tests/baselines/reference/ES5SymbolProperty7.js
@@ -11,7 +11,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/ExportClassWhichExtendsInterfaceWithInaccessibleType.js b/tests/baselines/reference/ExportClassWhichExtendsInterfaceWithInaccessibleType.js
index df1341194d..5b48523b14 100644
--- a/tests/baselines/reference/ExportClassWhichExtendsInterfaceWithInaccessibleType.js
+++ b/tests/baselines/reference/ExportClassWhichExtendsInterfaceWithInaccessibleType.js
@@ -23,7 +23,7 @@ module A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/Protected4.js b/tests/baselines/reference/Protected4.js
index 76c6cd2ce2..f747d8a1ce 100644
--- a/tests/baselines/reference/Protected4.js
+++ b/tests/baselines/reference/Protected4.js
@@ -7,7 +7,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/Protected7.js b/tests/baselines/reference/Protected7.js
index 7f80771561..8c1a7a0ce6 100644
--- a/tests/baselines/reference/Protected7.js
+++ b/tests/baselines/reference/Protected7.js
@@ -7,7 +7,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/TwoInternalModulesThatMergeEachWithExportedAndNonExportedClassesOfTheSameName.js b/tests/baselines/reference/TwoInternalModulesThatMergeEachWithExportedAndNonExportedClassesOfTheSameName.js
index e6b607eb82..739bb3e624 100644
--- a/tests/baselines/reference/TwoInternalModulesThatMergeEachWithExportedAndNonExportedClassesOfTheSameName.js
+++ b/tests/baselines/reference/TwoInternalModulesThatMergeEachWithExportedAndNonExportedClassesOfTheSameName.js
@@ -44,7 +44,7 @@ var l: X.Y.Z.Line;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/abstractProperty.js b/tests/baselines/reference/abstractProperty.js
index e7d7888405..07bf1c18fc 100644
--- a/tests/baselines/reference/abstractProperty.js
+++ b/tests/baselines/reference/abstractProperty.js
@@ -35,7 +35,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/accessInstanceMemberFromStaticMethod01.js b/tests/baselines/reference/accessInstanceMemberFromStaticMethod01.js
index 3703c8a5f1..9b17d431c8 100644
--- a/tests/baselines/reference/accessInstanceMemberFromStaticMethod01.js
+++ b/tests/baselines/reference/accessInstanceMemberFromStaticMethod01.js
@@ -11,7 +11,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/accessOverriddenBaseClassMember1.js b/tests/baselines/reference/accessOverriddenBaseClassMember1.js
index 6679aeb8f3..48d148bc18 100644
--- a/tests/baselines/reference/accessOverriddenBaseClassMember1.js
+++ b/tests/baselines/reference/accessOverriddenBaseClassMember1.js
@@ -19,7 +19,7 @@ class ColoredPoint extends Point {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/accessibilityModifiers.js b/tests/baselines/reference/accessibilityModifiers.js
index eafe71a0b1..3a692bdfc6 100644
--- a/tests/baselines/reference/accessibilityModifiers.js
+++ b/tests/baselines/reference/accessibilityModifiers.js
@@ -48,7 +48,7 @@ class E {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/ambiguousCallsWhereReturnTypesAgree.js b/tests/baselines/reference/ambiguousCallsWhereReturnTypesAgree.js
index 5331718d74..9df30a09c2 100644
--- a/tests/baselines/reference/ambiguousCallsWhereReturnTypesAgree.js
+++ b/tests/baselines/reference/ambiguousCallsWhereReturnTypesAgree.js
@@ -32,7 +32,7 @@ class TestClass2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/anonterface.js b/tests/baselines/reference/anonterface.js
index 3659301015..d81ef50f96 100644
--- a/tests/baselines/reference/anonterface.js
+++ b/tests/baselines/reference/anonterface.js
@@ -18,7 +18,7 @@ c.m(function(n) { return "hello: "+n; },18);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/anonymousClassExpression2.js b/tests/baselines/reference/anonymousClassExpression2.js
index 091849f1e4..c7f750b86d 100644
--- a/tests/baselines/reference/anonymousClassExpression2.js
+++ b/tests/baselines/reference/anonymousClassExpression2.js
@@ -22,7 +22,7 @@ while (0) {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/argsInScope.js b/tests/baselines/reference/argsInScope.js
index d5f922d418..9519d16c8b 100644
--- a/tests/baselines/reference/argsInScope.js
+++ b/tests/baselines/reference/argsInScope.js
@@ -15,7 +15,7 @@ c.P(1,2,3);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/arrayAssignmentTest1.js b/tests/baselines/reference/arrayAssignmentTest1.js
index a1ca1842bb..af01a784f6 100644
--- a/tests/baselines/reference/arrayAssignmentTest1.js
+++ b/tests/baselines/reference/arrayAssignmentTest1.js
@@ -89,7 +89,7 @@ arr_any = i1; // should be an error - is
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/arrayAssignmentTest2.js b/tests/baselines/reference/arrayAssignmentTest2.js
index 7fd17596bb..0ac5c7f7de 100644
--- a/tests/baselines/reference/arrayAssignmentTest2.js
+++ b/tests/baselines/reference/arrayAssignmentTest2.js
@@ -63,7 +63,7 @@ arr_any = i1; // should be an error - is
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/arrayAssignmentTest4.js b/tests/baselines/reference/arrayAssignmentTest4.js
index 768671803b..1596ddb15e 100644
--- a/tests/baselines/reference/arrayAssignmentTest4.js
+++ b/tests/baselines/reference/arrayAssignmentTest4.js
@@ -28,7 +28,7 @@ arr_any = c3; // should be an error - is
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/arrayAssignmentTest5.js b/tests/baselines/reference/arrayAssignmentTest5.js
index f43e507284..7c72e5c0bf 100644
--- a/tests/baselines/reference/arrayAssignmentTest5.js
+++ b/tests/baselines/reference/arrayAssignmentTest5.js
@@ -37,7 +37,7 @@ module Test {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/arrayAssignmentTest6.js b/tests/baselines/reference/arrayAssignmentTest6.js
index 5ff3058351..8842ab533f 100644
--- a/tests/baselines/reference/arrayAssignmentTest6.js
+++ b/tests/baselines/reference/arrayAssignmentTest6.js
@@ -24,7 +24,7 @@ module Test {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/arrayBestCommonTypes.js b/tests/baselines/reference/arrayBestCommonTypes.js
index 2beb7fca15..ebf558d49f 100644
--- a/tests/baselines/reference/arrayBestCommonTypes.js
+++ b/tests/baselines/reference/arrayBestCommonTypes.js
@@ -121,7 +121,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/arrayOfExportedClass.js b/tests/baselines/reference/arrayOfExportedClass.js
index ef4bd8cfa7..68afeec4cd 100644
--- a/tests/baselines/reference/arrayOfExportedClass.js
+++ b/tests/baselines/reference/arrayOfExportedClass.js
@@ -37,7 +37,7 @@ module.exports = Car;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/arrayReferenceWithoutTypeArgs.js b/tests/baselines/reference/arrayReferenceWithoutTypeArgs.js
index a5300c94ff..14b1bb2e29 100644
--- a/tests/baselines/reference/arrayReferenceWithoutTypeArgs.js
+++ b/tests/baselines/reference/arrayReferenceWithoutTypeArgs.js
@@ -7,7 +7,7 @@ class X {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/arrayconcat.js b/tests/baselines/reference/arrayconcat.js
index 78b9d75a00..3a3d5b66c9 100644
--- a/tests/baselines/reference/arrayconcat.js
+++ b/tests/baselines/reference/arrayconcat.js
@@ -32,7 +32,7 @@ class parser {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/arrowFunctionExpressions.js b/tests/baselines/reference/arrowFunctionExpressions.js
index 418a3f1079..a477d06624 100644
--- a/tests/baselines/reference/arrowFunctionExpressions.js
+++ b/tests/baselines/reference/arrowFunctionExpressions.js
@@ -103,7 +103,7 @@ function tryCatchFn() {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/asiAbstract.js b/tests/baselines/reference/asiAbstract.js
index f8cb55f615..218d2dc0c7 100644
--- a/tests/baselines/reference/asiAbstract.js
+++ b/tests/baselines/reference/asiAbstract.js
@@ -19,7 +19,7 @@ class C3 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/asiInES6Classes.js b/tests/baselines/reference/asiInES6Classes.js
index 48bd24a844..93393e77d9 100644
--- a/tests/baselines/reference/asiInES6Classes.js
+++ b/tests/baselines/reference/asiInES6Classes.js
@@ -26,7 +26,7 @@ class Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/asiPublicPrivateProtected.js b/tests/baselines/reference/asiPublicPrivateProtected.js
index 281a94b1c6..98fe4ab84f 100644
--- a/tests/baselines/reference/asiPublicPrivateProtected.js
+++ b/tests/baselines/reference/asiPublicPrivateProtected.js
@@ -44,7 +44,7 @@ class ClassWithThreeMembers {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/assertInWrapSomeTypeParameter.js b/tests/baselines/reference/assertInWrapSomeTypeParameter.js
index d2c45d5f9f..4da283e050 100644
--- a/tests/baselines/reference/assertInWrapSomeTypeParameter.js
+++ b/tests/baselines/reference/assertInWrapSomeTypeParameter.js
@@ -9,7 +9,7 @@ class C<T extends C<T>> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/assignToExistingClass.js b/tests/baselines/reference/assignToExistingClass.js
index 4c70dc5db5..7abfde2a72 100644
--- a/tests/baselines/reference/assignToExistingClass.js
+++ b/tests/baselines/reference/assignToExistingClass.js
@@ -19,7 +19,7 @@ module Test {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/assignmentCompatInterfaceWithStringIndexSignature.js b/tests/baselines/reference/assignmentCompatInterfaceWithStringIndexSignature.js
index 611796e236..08863fe1a1 100644
--- a/tests/baselines/reference/assignmentCompatInterfaceWithStringIndexSignature.js
+++ b/tests/baselines/reference/assignmentCompatInterfaceWithStringIndexSignature.js
@@ -20,7 +20,7 @@ Biz(new Foo());
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/assignmentLHSIsValue.js b/tests/baselines/reference/assignmentLHSIsValue.js
index 6ac57acd08..072733202b 100644
--- a/tests/baselines/reference/assignmentLHSIsValue.js
+++ b/tests/baselines/reference/assignmentLHSIsValue.js
@@ -74,7 +74,7 @@ foo() = value;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/asyncAwaitIsolatedModules_es5.js b/tests/baselines/reference/asyncAwaitIsolatedModules_es5.js
index 13a4aa91ee..5283220b84 100644
--- a/tests/baselines/reference/asyncAwaitIsolatedModules_es5.js
+++ b/tests/baselines/reference/asyncAwaitIsolatedModules_es5.js
@@ -44,7 +44,7 @@ module M {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/asyncAwait_es5.js b/tests/baselines/reference/asyncAwait_es5.js
index 6491e06e90..1b37fc52d8 100644
--- a/tests/baselines/reference/asyncAwait_es5.js
+++ b/tests/baselines/reference/asyncAwait_es5.js
@@ -43,7 +43,7 @@ module M {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/asyncImportedPromise_es5.js b/tests/baselines/reference/asyncImportedPromise_es5.js
index 1657952b7b..d24b9cbf59 100644
--- a/tests/baselines/reference/asyncImportedPromise_es5.js
+++ b/tests/baselines/reference/asyncImportedPromise_es5.js
@@ -35,7 +35,7 @@ exports.Task = Task;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesClass.js b/tests/baselines/reference/augmentedTypesClass.js
index 2df6215fa0..1f09eae201 100644
--- a/tests/baselines/reference/augmentedTypesClass.js
+++ b/tests/baselines/reference/augmentedTypesClass.js
@@ -11,7 +11,7 @@ enum c4 { One } // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesClass2.js b/tests/baselines/reference/augmentedTypesClass2.js
index 9f884b4662..2ccfebcb61 100644
--- a/tests/baselines/reference/augmentedTypesClass2.js
+++ b/tests/baselines/reference/augmentedTypesClass2.js
@@ -35,7 +35,7 @@ class c44 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesClass2a.js b/tests/baselines/reference/augmentedTypesClass2a.js
index d9210fe443..65d4f2a8a9 100644
--- a/tests/baselines/reference/augmentedTypesClass2a.js
+++ b/tests/baselines/reference/augmentedTypesClass2a.js
@@ -8,7 +8,7 @@ var c2 = () => { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesClass3.js b/tests/baselines/reference/augmentedTypesClass3.js
index 84967d0911..0875e90c07 100644
--- a/tests/baselines/reference/augmentedTypesClass3.js
+++ b/tests/baselines/reference/augmentedTypesClass3.js
@@ -17,7 +17,7 @@ class c5c { public foo() { } }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesClass4.js b/tests/baselines/reference/augmentedTypesClass4.js
index 1f01bd67cb..a0d0a7bc91 100644
--- a/tests/baselines/reference/augmentedTypesClass4.js
+++ b/tests/baselines/reference/augmentedTypesClass4.js
@@ -8,7 +8,7 @@ class c3 { public bar() { } } // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesEnum.js b/tests/baselines/reference/augmentedTypesEnum.js
index 03ad8f49f8..671cca6cf5 100644
--- a/tests/baselines/reference/augmentedTypesEnum.js
+++ b/tests/baselines/reference/augmentedTypesEnum.js
@@ -39,7 +39,7 @@ module e6b { export var y = 2; } // should be error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesEnum2.js b/tests/baselines/reference/augmentedTypesEnum2.js
index 785bf63ef1..5a14262dfa 100644
--- a/tests/baselines/reference/augmentedTypesEnum2.js
+++ b/tests/baselines/reference/augmentedTypesEnum2.js
@@ -23,7 +23,7 @@ class e2 { // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesExternalModule1.js b/tests/baselines/reference/augmentedTypesExternalModule1.js
index fa3ceebf95..6f692b39e5 100644
--- a/tests/baselines/reference/augmentedTypesExternalModule1.js
+++ b/tests/baselines/reference/augmentedTypesExternalModule1.js
@@ -7,7 +7,7 @@ module c5 { } // should be ok everywhere
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesFunction.js b/tests/baselines/reference/augmentedTypesFunction.js
index 8568e87a32..3b55e6318e 100644
--- a/tests/baselines/reference/augmentedTypesFunction.js
+++ b/tests/baselines/reference/augmentedTypesFunction.js
@@ -42,7 +42,7 @@ module y5c { export interface I { foo(): void } } // should be an error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesInterface.js b/tests/baselines/reference/augmentedTypesInterface.js
index 8f0ac15c0b..fb87655645 100644
--- a/tests/baselines/reference/augmentedTypesInterface.js
+++ b/tests/baselines/reference/augmentedTypesInterface.js
@@ -38,7 +38,7 @@ interface i4 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesModules.js b/tests/baselines/reference/augmentedTypesModules.js
index c940ed86e3..be5cff017b 100644
--- a/tests/baselines/reference/augmentedTypesModules.js
+++ b/tests/baselines/reference/augmentedTypesModules.js
@@ -101,7 +101,7 @@ module m6 { export var y = 2; }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesModules2.js b/tests/baselines/reference/augmentedTypesModules2.js
index e3bbc2ca79..db2a6033b1 100644
--- a/tests/baselines/reference/augmentedTypesModules2.js
+++ b/tests/baselines/reference/augmentedTypesModules2.js
@@ -32,7 +32,7 @@ module m2g { export class C { foo() { } } }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesModules3.js b/tests/baselines/reference/augmentedTypesModules3.js
index cf1ca88d4a..f2b3c91279 100644
--- a/tests/baselines/reference/augmentedTypesModules3.js
+++ b/tests/baselines/reference/augmentedTypesModules3.js
@@ -10,7 +10,7 @@ class m3a { foo() { } } // error, class isn't ambient or declared before the mod
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesModules3b.js b/tests/baselines/reference/augmentedTypesModules3b.js
index bc885b86be..776efa20aa 100644
--- a/tests/baselines/reference/augmentedTypesModules3b.js
+++ b/tests/baselines/reference/augmentedTypesModules3b.js
@@ -22,7 +22,7 @@ module m3g { export class C { foo() { } } }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesModules4.js b/tests/baselines/reference/augmentedTypesModules4.js
index 0aa12b48d1..499639c8bf 100644
--- a/tests/baselines/reference/augmentedTypesModules4.js
+++ b/tests/baselines/reference/augmentedTypesModules4.js
@@ -26,7 +26,7 @@ module m5 { export interface I { foo(): void } } // should already be reasonably
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/augmentedTypesVar.js b/tests/baselines/reference/augmentedTypesVar.js
index 0dc90e7ed8..f50351cefd 100644
--- a/tests/baselines/reference/augmentedTypesVar.js
+++ b/tests/baselines/reference/augmentedTypesVar.js
@@ -40,7 +40,7 @@ module x6b { export var y = 2; } // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/autoLift2.js b/tests/baselines/reference/autoLift2.js
index c44e62f67e..411676beaa 100644
--- a/tests/baselines/reference/autoLift2.js
+++ b/tests/baselines/reference/autoLift2.js
@@ -35,7 +35,7 @@ a.baz();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/autolift4.js b/tests/baselines/reference/autolift4.js
index c3ab0d4b7e..9266114e31 100644
--- a/tests/baselines/reference/autolift4.js
+++ b/tests/baselines/reference/autolift4.js
@@ -27,7 +27,7 @@ class Point3D extends Point {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/avoid.js b/tests/baselines/reference/avoid.js
index a569542554..77ccdd7c1f 100644
--- a/tests/baselines/reference/avoid.js
+++ b/tests/baselines/reference/avoid.js
@@ -23,7 +23,7 @@ var N=new f();  // ok with void fn
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/baseCheck.js b/tests/baselines/reference/baseCheck.js
index 1bf14a65f8..e95bfcfc90 100644
--- a/tests/baselines/reference/baseCheck.js
+++ b/tests/baselines/reference/baseCheck.js
@@ -43,7 +43,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/baseTypeAfterDerivedType.js b/tests/baselines/reference/baseTypeAfterDerivedType.js
index b88f393adc..d2ac028ef5 100644
--- a/tests/baselines/reference/baseTypeAfterDerivedType.js
+++ b/tests/baselines/reference/baseTypeAfterDerivedType.js
@@ -20,7 +20,7 @@ interface Base2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/baseTypeWrappingInstantiationChain.js b/tests/baselines/reference/baseTypeWrappingInstantiationChain.js
index 1c9e89f2e2..873caa805b 100644
--- a/tests/baselines/reference/baseTypeWrappingInstantiationChain.js
+++ b/tests/baselines/reference/baseTypeWrappingInstantiationChain.js
@@ -41,7 +41,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/binopAssignmentShouldHaveType.js b/tests/baselines/reference/binopAssignmentShouldHaveType.js
index bfd238265d..ad198e1f64 100644
--- a/tests/baselines/reference/binopAssignmentShouldHaveType.js
+++ b/tests/baselines/reference/binopAssignmentShouldHaveType.js
@@ -23,7 +23,7 @@ module Test {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/blockScopedFunctionDeclarationInStrictClass.js b/tests/baselines/reference/blockScopedFunctionDeclarationInStrictClass.js
index 4da34779e2..c921d4858d 100644
--- a/tests/baselines/reference/blockScopedFunctionDeclarationInStrictClass.js
+++ b/tests/baselines/reference/blockScopedFunctionDeclarationInStrictClass.js
@@ -13,7 +13,7 @@ class c {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/blockScopedVariablesUseBeforeDef.js b/tests/baselines/reference/blockScopedVariablesUseBeforeDef.js
index e0255e543d..636c9bc7e0 100644
--- a/tests/baselines/reference/blockScopedVariablesUseBeforeDef.js
+++ b/tests/baselines/reference/blockScopedVariablesUseBeforeDef.js
@@ -107,7 +107,7 @@ function foo14() {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callGenericFunctionWithIncorrectNumberOfTypeArguments.js b/tests/baselines/reference/callGenericFunctionWithIncorrectNumberOfTypeArguments.js
index 8aa77cb432..5e3269c5a5 100644
--- a/tests/baselines/reference/callGenericFunctionWithIncorrectNumberOfTypeArguments.js
+++ b/tests/baselines/reference/callGenericFunctionWithIncorrectNumberOfTypeArguments.js
@@ -50,7 +50,7 @@ var r7b = i2.f<number, string, number>(1, '');
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callGenericFunctionWithZeroTypeArguments.js b/tests/baselines/reference/callGenericFunctionWithZeroTypeArguments.js
index e324c528ef..f3dc12e959 100644
--- a/tests/baselines/reference/callGenericFunctionWithZeroTypeArguments.js
+++ b/tests/baselines/reference/callGenericFunctionWithZeroTypeArguments.js
@@ -41,7 +41,7 @@ var r7 = i2.f(1);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callNonGenericFunctionWithTypeArguments.js b/tests/baselines/reference/callNonGenericFunctionWithTypeArguments.js
index de31d2b6a6..0fbd173712 100644
--- a/tests/baselines/reference/callNonGenericFunctionWithTypeArguments.js
+++ b/tests/baselines/reference/callNonGenericFunctionWithTypeArguments.js
@@ -49,7 +49,7 @@ var r8 = a2<number>();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callOverloadViaElementAccessExpression.js b/tests/baselines/reference/callOverloadViaElementAccessExpression.js
index 108b1deb1b..fd03dcb6b7 100644
--- a/tests/baselines/reference/callOverloadViaElementAccessExpression.js
+++ b/tests/baselines/reference/callOverloadViaElementAccessExpression.js
@@ -15,7 +15,7 @@ var r2: number = c['foo']('');
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callOverloads1.js b/tests/baselines/reference/callOverloads1.js
index 6122d36bad..4bdfc90cea 100644
--- a/tests/baselines/reference/callOverloads1.js
+++ b/tests/baselines/reference/callOverloads1.js
@@ -21,7 +21,7 @@ Foo();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callOverloads2.js b/tests/baselines/reference/callOverloads2.js
index bbcac35f20..06ac17dad9 100644
--- a/tests/baselines/reference/callOverloads2.js
+++ b/tests/baselines/reference/callOverloads2.js
@@ -27,7 +27,7 @@ Foo();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callOverloads3.js b/tests/baselines/reference/callOverloads3.js
index 024d946618..2d81158acb 100644
--- a/tests/baselines/reference/callOverloads3.js
+++ b/tests/baselines/reference/callOverloads3.js
@@ -21,7 +21,7 @@ Foo("s");
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callOverloads4.js b/tests/baselines/reference/callOverloads4.js
index 35422f36ed..dd28490bb3 100644
--- a/tests/baselines/reference/callOverloads4.js
+++ b/tests/baselines/reference/callOverloads4.js
@@ -21,7 +21,7 @@ Foo("s");
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callOverloads5.js b/tests/baselines/reference/callOverloads5.js
index 79da12c536..f825b622d8 100644
--- a/tests/baselines/reference/callOverloads5.js
+++ b/tests/baselines/reference/callOverloads5.js
@@ -23,7 +23,7 @@ Foo("s");
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callSignatureWithOptionalParameterAndInitializer.js b/tests/baselines/reference/callSignatureWithOptionalParameterAndInitializer.js
index 025ca7d42d..a1bce8bf6e 100644
--- a/tests/baselines/reference/callSignatureWithOptionalParameterAndInitializer.js
+++ b/tests/baselines/reference/callSignatureWithOptionalParameterAndInitializer.js
@@ -60,7 +60,7 @@ b.b(1);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callSignaturesWithAccessibilityModifiersOnParameters.js b/tests/baselines/reference/callSignaturesWithAccessibilityModifiersOnParameters.js
index 7fadb09ad6..8d1e1d7af5 100644
--- a/tests/baselines/reference/callSignaturesWithAccessibilityModifiersOnParameters.js
+++ b/tests/baselines/reference/callSignaturesWithAccessibilityModifiersOnParameters.js
@@ -43,7 +43,7 @@ var b = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callSignaturesWithDuplicateParameters.js b/tests/baselines/reference/callSignaturesWithDuplicateParameters.js
index e2d4feaf23..f52f4d204f 100644
--- a/tests/baselines/reference/callSignaturesWithDuplicateParameters.js
+++ b/tests/baselines/reference/callSignaturesWithDuplicateParameters.js
@@ -43,7 +43,7 @@ var b = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callSignaturesWithOptionalParameters.js b/tests/baselines/reference/callSignaturesWithOptionalParameters.js
index da7248d891..00dad4a36e 100644
--- a/tests/baselines/reference/callSignaturesWithOptionalParameters.js
+++ b/tests/baselines/reference/callSignaturesWithOptionalParameters.js
@@ -60,7 +60,7 @@ b.b(1);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callSignaturesWithOptionalParameters2.js b/tests/baselines/reference/callSignaturesWithOptionalParameters2.js
index ceaa857acd..abff543669 100644
--- a/tests/baselines/reference/callSignaturesWithOptionalParameters2.js
+++ b/tests/baselines/reference/callSignaturesWithOptionalParameters2.js
@@ -64,7 +64,7 @@ a.foo(1, 2, 3);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callSignaturesWithParameterInitializers.js b/tests/baselines/reference/callSignaturesWithParameterInitializers.js
index 03ddb17e65..feb934898e 100644
--- a/tests/baselines/reference/callSignaturesWithParameterInitializers.js
+++ b/tests/baselines/reference/callSignaturesWithParameterInitializers.js
@@ -62,7 +62,7 @@ b.b(1);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callSignaturesWithParameterInitializers2.js b/tests/baselines/reference/callSignaturesWithParameterInitializers2.js
index a4b5c22c09..9ad6b10939 100644
--- a/tests/baselines/reference/callSignaturesWithParameterInitializers2.js
+++ b/tests/baselines/reference/callSignaturesWithParameterInitializers2.js
@@ -31,7 +31,7 @@ b.foo(1);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/callWithSpread.js b/tests/baselines/reference/callWithSpread.js
index b019b2f715..8e815cfc73 100644
--- a/tests/baselines/reference/callWithSpread.js
+++ b/tests/baselines/reference/callWithSpread.js
@@ -62,7 +62,7 @@ class D extends C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/captureSuperPropertyAccessInSuperCall01.js b/tests/baselines/reference/captureSuperPropertyAccessInSuperCall01.js
index 9b4dc3ea04..f6806f8a72 100644
--- a/tests/baselines/reference/captureSuperPropertyAccessInSuperCall01.js
+++ b/tests/baselines/reference/captureSuperPropertyAccessInSuperCall01.js
@@ -15,7 +15,7 @@ class B extends A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/captureThisInSuperCall.js b/tests/baselines/reference/captureThisInSuperCall.js
index 051495829c..bd2f298fdd 100644
--- a/tests/baselines/reference/captureThisInSuperCall.js
+++ b/tests/baselines/reference/captureThisInSuperCall.js
@@ -22,7 +22,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/capturedLetConstInLoop10.js b/tests/baselines/reference/capturedLetConstInLoop10.js
index ae6a1ea4b8..5da064f301 100644
--- a/tests/baselines/reference/capturedLetConstInLoop10.js
+++ b/tests/baselines/reference/capturedLetConstInLoop10.js
@@ -49,7 +49,7 @@ class B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/capturedLetConstInLoop13.js b/tests/baselines/reference/capturedLetConstInLoop13.js
index ed38248394..4930986ebf 100644
--- a/tests/baselines/reference/capturedLetConstInLoop13.js
+++ b/tests/baselines/reference/capturedLetConstInLoop13.js
@@ -26,7 +26,7 @@ new Main();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/capturedLetConstInLoop9.js b/tests/baselines/reference/capturedLetConstInLoop9.js
index 4270f9f52e..5f2aa7eebb 100644
--- a/tests/baselines/reference/capturedLetConstInLoop9.js
+++ b/tests/baselines/reference/capturedLetConstInLoop9.js
@@ -142,7 +142,7 @@ function foo3 () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/chainedCallsWithTypeParameterConstrainedToOtherTypeParameter.js b/tests/baselines/reference/chainedCallsWithTypeParameterConstrainedToOtherTypeParameter.js
index 093c7fe5e5..244b314ab0 100644
--- a/tests/baselines/reference/chainedCallsWithTypeParameterConstrainedToOtherTypeParameter.js
+++ b/tests/baselines/reference/chainedCallsWithTypeParameterConstrainedToOtherTypeParameter.js
@@ -23,7 +23,7 @@ class C extends B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/chainedCallsWithTypeParameterConstrainedToOtherTypeParameter2.js b/tests/baselines/reference/chainedCallsWithTypeParameterConstrainedToOtherTypeParameter2.js
index f430c1eac3..8ed0828489 100644
--- a/tests/baselines/reference/chainedCallsWithTypeParameterConstrainedToOtherTypeParameter2.js
+++ b/tests/baselines/reference/chainedCallsWithTypeParameterConstrainedToOtherTypeParameter2.js
@@ -45,7 +45,7 @@ class Chain2<T extends I> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/checkJsxChildrenProperty10.js b/tests/baselines/reference/checkJsxChildrenProperty10.js
index c0af875600..f28b88947f 100644
--- a/tests/baselines/reference/checkJsxChildrenProperty10.js
+++ b/tests/baselines/reference/checkJsxChildrenProperty10.js
@@ -26,7 +26,7 @@ let k4 = <Button> <h2> Hello </h2> </Button>;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/checkJsxChildrenProperty11.js b/tests/baselines/reference/checkJsxChildrenProperty11.js
index c0af875600..f28b88947f 100644
--- a/tests/baselines/reference/checkJsxChildrenProperty11.js
+++ b/tests/baselines/reference/checkJsxChildrenProperty11.js
@@ -26,7 +26,7 @@ let k4 = <Button> <h2> Hello </h2> </Button>;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/checkJsxChildrenProperty12.js b/tests/baselines/reference/checkJsxChildrenProperty12.js
index 0669739358..4c133916e5 100644
--- a/tests/baselines/reference/checkJsxChildrenProperty12.js
+++ b/tests/baselines/reference/checkJsxChildrenProperty12.js
@@ -47,7 +47,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/checkJsxChildrenProperty13.js b/tests/baselines/reference/checkJsxChildrenProperty13.js
index 550873e41f..280f40f5f3 100644
--- a/tests/baselines/reference/checkJsxChildrenProperty13.js
+++ b/tests/baselines/reference/checkJsxChildrenProperty13.js
@@ -42,7 +42,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/checkJsxChildrenProperty3.js b/tests/baselines/reference/checkJsxChildrenProperty3.js
index cf68946122..abbdd2782d 100644
--- a/tests/baselines/reference/checkJsxChildrenProperty3.js
+++ b/tests/baselines/reference/checkJsxChildrenProperty3.js
@@ -54,7 +54,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/checkJsxChildrenProperty4.js b/tests/baselines/reference/checkJsxChildrenProperty4.js
index bc75936364..b1f2c84825 100644
--- a/tests/baselines/reference/checkJsxChildrenProperty4.js
+++ b/tests/baselines/reference/checkJsxChildrenProperty4.js
@@ -59,7 +59,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/checkJsxChildrenProperty5.js b/tests/baselines/reference/checkJsxChildrenProperty5.js
index 5a0b5a414b..dff3f60e50 100644
--- a/tests/baselines/reference/checkJsxChildrenProperty5.js
+++ b/tests/baselines/reference/checkJsxChildrenProperty5.js
@@ -45,7 +45,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/checkJsxChildrenProperty6.js b/tests/baselines/reference/checkJsxChildrenProperty6.js
index 4a6a56a864..3326559f43 100644
--- a/tests/baselines/reference/checkJsxChildrenProperty6.js
+++ b/tests/baselines/reference/checkJsxChildrenProperty6.js
@@ -58,7 +58,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/checkJsxChildrenProperty7.js b/tests/baselines/reference/checkJsxChildrenProperty7.js
index 3ac2ebe39c..3d636d44bf 100644
--- a/tests/baselines/reference/checkJsxChildrenProperty7.js
+++ b/tests/baselines/reference/checkJsxChildrenProperty7.js
@@ -43,7 +43,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/checkJsxChildrenProperty8.js b/tests/baselines/reference/checkJsxChildrenProperty8.js
index 111c407133..f426ed6fe9 100644
--- a/tests/baselines/reference/checkJsxChildrenProperty8.js
+++ b/tests/baselines/reference/checkJsxChildrenProperty8.js
@@ -44,7 +44,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/checkSwitchStatementIfCaseTypeIsString.js b/tests/baselines/reference/checkSwitchStatementIfCaseTypeIsString.js
index 8e45ac53fd..4342e6a90c 100644
--- a/tests/baselines/reference/checkSwitchStatementIfCaseTypeIsString.js
+++ b/tests/baselines/reference/checkSwitchStatementIfCaseTypeIsString.js
@@ -15,7 +15,7 @@ class A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classAbstractAsIdentifier.js b/tests/baselines/reference/classAbstractAsIdentifier.js
index 96a03e1de4..493eb5234f 100644
--- a/tests/baselines/reference/classAbstractAsIdentifier.js
+++ b/tests/baselines/reference/classAbstractAsIdentifier.js
@@ -9,7 +9,7 @@ new abstract;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classAbstractCrashedOnce.js b/tests/baselines/reference/classAbstractCrashedOnce.js
index acb93f58c8..76117f6862 100644
--- a/tests/baselines/reference/classAbstractCrashedOnce.js
+++ b/tests/baselines/reference/classAbstractCrashedOnce.js
@@ -24,7 +24,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classAbstractExtends.js b/tests/baselines/reference/classAbstractExtends.js
index 8a4dcd5ec3..206bde07b5 100644
--- a/tests/baselines/reference/classAbstractExtends.js
+++ b/tests/baselines/reference/classAbstractExtends.js
@@ -19,7 +19,7 @@ class E extends B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classAbstractGeneric.js b/tests/baselines/reference/classAbstractGeneric.js
index d01b5b6350..cbd15bd17c 100644
--- a/tests/baselines/reference/classAbstractGeneric.js
+++ b/tests/baselines/reference/classAbstractGeneric.js
@@ -39,7 +39,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classAbstractInstantiations2.js b/tests/baselines/reference/classAbstractInstantiations2.js
index 286341200d..feb87fa9dd 100644
--- a/tests/baselines/reference/classAbstractInstantiations2.js
+++ b/tests/baselines/reference/classAbstractInstantiations2.js
@@ -55,7 +55,7 @@ class H { // error -- not declared abstract
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classAbstractMethodInNonAbstractClass.js b/tests/baselines/reference/classAbstractMethodInNonAbstractClass.js
index 696848b58a..d6b8681402 100644
--- a/tests/baselines/reference/classAbstractMethodInNonAbstractClass.js
+++ b/tests/baselines/reference/classAbstractMethodInNonAbstractClass.js
@@ -11,7 +11,7 @@ class B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classAbstractMethodWithImplementation.js b/tests/baselines/reference/classAbstractMethodWithImplementation.js
index 25db3df4d6..1ae64d6d16 100644
--- a/tests/baselines/reference/classAbstractMethodWithImplementation.js
+++ b/tests/baselines/reference/classAbstractMethodWithImplementation.js
@@ -7,7 +7,7 @@ abstract class A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classAbstractOverloads.js b/tests/baselines/reference/classAbstractOverloads.js
index 77619fce61..f02fae10e6 100644
--- a/tests/baselines/reference/classAbstractOverloads.js
+++ b/tests/baselines/reference/classAbstractOverloads.js
@@ -28,7 +28,7 @@ abstract class B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classAbstractOverrideWithAbstract.js b/tests/baselines/reference/classAbstractOverrideWithAbstract.js
index 254b8686c0..156168d83a 100644
--- a/tests/baselines/reference/classAbstractOverrideWithAbstract.js
+++ b/tests/baselines/reference/classAbstractOverrideWithAbstract.js
@@ -27,7 +27,7 @@ class DD extends BB {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classAbstractSuperCalls.js b/tests/baselines/reference/classAbstractSuperCalls.js
index fa99360fd1..13f55f6a60 100644
--- a/tests/baselines/reference/classAbstractSuperCalls.js
+++ b/tests/baselines/reference/classAbstractSuperCalls.js
@@ -30,7 +30,7 @@ abstract class BB extends AA {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classAbstractUsingAbstractMethod1.js b/tests/baselines/reference/classAbstractUsingAbstractMethod1.js
index 99715ee8e6..e1b52ebf84 100644
--- a/tests/baselines/reference/classAbstractUsingAbstractMethod1.js
+++ b/tests/baselines/reference/classAbstractUsingAbstractMethod1.js
@@ -31,7 +31,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classAbstractUsingAbstractMethods2.js b/tests/baselines/reference/classAbstractUsingAbstractMethods2.js
index 364cae47a9..23be858601 100644
--- a/tests/baselines/reference/classAbstractUsingAbstractMethods2.js
+++ b/tests/baselines/reference/classAbstractUsingAbstractMethods2.js
@@ -41,7 +41,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classBlockScoping.js b/tests/baselines/reference/classBlockScoping.js
index 1151a24ab7..db1f575dae 100644
--- a/tests/baselines/reference/classBlockScoping.js
+++ b/tests/baselines/reference/classBlockScoping.js
@@ -37,7 +37,7 @@ function f(b: boolean) {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classConstructorAccessibility2.js b/tests/baselines/reference/classConstructorAccessibility2.js
index 63944ff2cd..8bcc6fd163 100644
--- a/tests/baselines/reference/classConstructorAccessibility2.js
+++ b/tests/baselines/reference/classConstructorAccessibility2.js
@@ -49,7 +49,7 @@ var dc = new DerivedC(1);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classConstructorAccessibility4.js b/tests/baselines/reference/classConstructorAccessibility4.js
index 3efa4cbb2e..5538370e11 100644
--- a/tests/baselines/reference/classConstructorAccessibility4.js
+++ b/tests/baselines/reference/classConstructorAccessibility4.js
@@ -33,7 +33,7 @@ class D {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classExpression4.js b/tests/baselines/reference/classExpression4.js
index 072f5ba0c2..ec2972f0c1 100644
--- a/tests/baselines/reference/classExpression4.js
+++ b/tests/baselines/reference/classExpression4.js
@@ -11,7 +11,7 @@ let x = (new C).foo();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classExpression5.js b/tests/baselines/reference/classExpression5.js
index 1685fdde3c..1d46433653 100644
--- a/tests/baselines/reference/classExpression5.js
+++ b/tests/baselines/reference/classExpression5.js
@@ -9,7 +9,7 @@ new class {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classExpressionTest1.js b/tests/baselines/reference/classExpressionTest1.js
index c48c51b940..0a76866cac 100644
--- a/tests/baselines/reference/classExpressionTest1.js
+++ b/tests/baselines/reference/classExpressionTest1.js
@@ -16,7 +16,7 @@ function M() {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classExpressionTest2.js b/tests/baselines/reference/classExpressionTest2.js
index 742187bdcd..4f6878bedd 100644
--- a/tests/baselines/reference/classExpressionTest2.js
+++ b/tests/baselines/reference/classExpressionTest2.js
@@ -16,7 +16,7 @@ function M() {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classExpressions.js b/tests/baselines/reference/classExpressions.js
index ceab0fbda8..1a167e0c11 100644
--- a/tests/baselines/reference/classExpressions.js
+++ b/tests/baselines/reference/classExpressions.js
@@ -12,7 +12,7 @@ let x = class B implements A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classExtendingClass.js b/tests/baselines/reference/classExtendingClass.js
index 6daaab5017..ce6ea2cece 100644
--- a/tests/baselines/reference/classExtendingClass.js
+++ b/tests/baselines/reference/classExtendingClass.js
@@ -35,7 +35,7 @@ var r8 = D2.other(1);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classExtendsInterfaceThatExtendsClassWithPrivates1.js b/tests/baselines/reference/classExtendsInterfaceThatExtendsClassWithPrivates1.js
index 7e2a70655a..d4a59ac4ec 100644
--- a/tests/baselines/reference/classExtendsInterfaceThatExtendsClassWithPrivates1.js
+++ b/tests/baselines/reference/classExtendsInterfaceThatExtendsClassWithPrivates1.js
@@ -18,7 +18,7 @@ class D2 implements I {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classImplementsClass2.js b/tests/baselines/reference/classImplementsClass2.js
index 0d9da36165..919169da60 100644
--- a/tests/baselines/reference/classImplementsClass2.js
+++ b/tests/baselines/reference/classImplementsClass2.js
@@ -17,7 +17,7 @@ c2 = c;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classImplementsClass3.js b/tests/baselines/reference/classImplementsClass3.js
index c788aeaf56..304e64d36a 100644
--- a/tests/baselines/reference/classImplementsClass3.js
+++ b/tests/baselines/reference/classImplementsClass3.js
@@ -18,7 +18,7 @@ c2 = c;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classImplementsClass4.js b/tests/baselines/reference/classImplementsClass4.js
index 6b00105152..79e5839d61 100644
--- a/tests/baselines/reference/classImplementsClass4.js
+++ b/tests/baselines/reference/classImplementsClass4.js
@@ -20,7 +20,7 @@ c2 = c;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classImplementsClass5.js b/tests/baselines/reference/classImplementsClass5.js
index 3807c7a865..4e572a2d6f 100644
--- a/tests/baselines/reference/classImplementsClass5.js
+++ b/tests/baselines/reference/classImplementsClass5.js
@@ -21,7 +21,7 @@ c2 = c;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classImplementsClass6.js b/tests/baselines/reference/classImplementsClass6.js
index 720329f26f..c5003ec28f 100644
--- a/tests/baselines/reference/classImplementsClass6.js
+++ b/tests/baselines/reference/classImplementsClass6.js
@@ -25,7 +25,7 @@ c2.bar(); // should error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classImplementsImportedInterface.js b/tests/baselines/reference/classImplementsImportedInterface.js
index 1fd42ebc16..d0ad42be77 100644
--- a/tests/baselines/reference/classImplementsImportedInterface.js
+++ b/tests/baselines/reference/classImplementsImportedInterface.js
@@ -16,7 +16,7 @@ module M2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classOrder1.js b/tests/baselines/reference/classOrder1.js
index 9b8807a421..d03ff2de56 100644
--- a/tests/baselines/reference/classOrder1.js
+++ b/tests/baselines/reference/classOrder1.js
@@ -15,7 +15,7 @@ a.foo();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classOrder2.js b/tests/baselines/reference/classOrder2.js
index be1b21cca5..cb5856b64b 100644
--- a/tests/baselines/reference/classOrder2.js
+++ b/tests/baselines/reference/classOrder2.js
@@ -32,7 +32,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classPropertyAsPrivate.js b/tests/baselines/reference/classPropertyAsPrivate.js
index 0420dfc2e6..b12c9dfb25 100644
--- a/tests/baselines/reference/classPropertyAsPrivate.js
+++ b/tests/baselines/reference/classPropertyAsPrivate.js
@@ -27,7 +27,7 @@ C.foo();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classPropertyAsProtected.js b/tests/baselines/reference/classPropertyAsProtected.js
index f5d0549d55..e6cb8b0df4 100644
--- a/tests/baselines/reference/classPropertyAsProtected.js
+++ b/tests/baselines/reference/classPropertyAsProtected.js
@@ -27,7 +27,7 @@ C.foo();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classPropertyIsPublicByDefault.js b/tests/baselines/reference/classPropertyIsPublicByDefault.js
index 0e4b5bdc6d..4c90e850d6 100644
--- a/tests/baselines/reference/classPropertyIsPublicByDefault.js
+++ b/tests/baselines/reference/classPropertyIsPublicByDefault.js
@@ -26,7 +26,7 @@ C.foo();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classSideInheritance1.js b/tests/baselines/reference/classSideInheritance1.js
index 783ea6a9c7..14dd830854 100644
--- a/tests/baselines/reference/classSideInheritance1.js
+++ b/tests/baselines/reference/classSideInheritance1.js
@@ -19,7 +19,7 @@ C2.bar(); // valid
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classSideInheritance2.js b/tests/baselines/reference/classSideInheritance2.js
index 49304de2da..a2ba7953a4 100644
--- a/tests/baselines/reference/classSideInheritance2.js
+++ b/tests/baselines/reference/classSideInheritance2.js
@@ -34,7 +34,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classWithDuplicateIdentifier.js b/tests/baselines/reference/classWithDuplicateIdentifier.js
index 28d5d9ab91..98591f5874 100644
--- a/tests/baselines/reference/classWithDuplicateIdentifier.js
+++ b/tests/baselines/reference/classWithDuplicateIdentifier.js
@@ -17,7 +17,7 @@ class D {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classWithMultipleBaseClasses.js b/tests/baselines/reference/classWithMultipleBaseClasses.js
index 67e782141b..55f17c46a4 100644
--- a/tests/baselines/reference/classWithMultipleBaseClasses.js
+++ b/tests/baselines/reference/classWithMultipleBaseClasses.js
@@ -28,7 +28,7 @@ interface I extends A, B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classWithOnlyPublicMembersEquivalentToInterface.js b/tests/baselines/reference/classWithOnlyPublicMembersEquivalentToInterface.js
index a70ed7e2fb..233d4c7a9a 100644
--- a/tests/baselines/reference/classWithOnlyPublicMembersEquivalentToInterface.js
+++ b/tests/baselines/reference/classWithOnlyPublicMembersEquivalentToInterface.js
@@ -30,7 +30,7 @@ i = c;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classWithOnlyPublicMembersEquivalentToInterface2.js b/tests/baselines/reference/classWithOnlyPublicMembersEquivalentToInterface2.js
index 3b7f48fbf6..f358a3f3b9 100644
--- a/tests/baselines/reference/classWithOnlyPublicMembersEquivalentToInterface2.js
+++ b/tests/baselines/reference/classWithOnlyPublicMembersEquivalentToInterface2.js
@@ -32,7 +32,7 @@ i = c;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classWithOptionalParameter.js b/tests/baselines/reference/classWithOptionalParameter.js
index 1247164480..d120aadc52 100644
--- a/tests/baselines/reference/classWithOptionalParameter.js
+++ b/tests/baselines/reference/classWithOptionalParameter.js
@@ -16,7 +16,7 @@ class C2<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classWithOverloadImplementationOfWrongName.js b/tests/baselines/reference/classWithOverloadImplementationOfWrongName.js
index 95d3ed4e17..6b5ecf0075 100644
--- a/tests/baselines/reference/classWithOverloadImplementationOfWrongName.js
+++ b/tests/baselines/reference/classWithOverloadImplementationOfWrongName.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classWithOverloadImplementationOfWrongName2.js b/tests/baselines/reference/classWithOverloadImplementationOfWrongName2.js
index 45cd55a779..14282ca062 100644
--- a/tests/baselines/reference/classWithOverloadImplementationOfWrongName2.js
+++ b/tests/baselines/reference/classWithOverloadImplementationOfWrongName2.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classWithPrivateProperty.js b/tests/baselines/reference/classWithPrivateProperty.js
index eb0b0f30c2..93d742ec3a 100644
--- a/tests/baselines/reference/classWithPrivateProperty.js
+++ b/tests/baselines/reference/classWithPrivateProperty.js
@@ -27,7 +27,7 @@ var r8: string = C.g();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classWithProtectedProperty.js b/tests/baselines/reference/classWithProtectedProperty.js
index 98c92cd3d6..fbacfe6b63 100644
--- a/tests/baselines/reference/classWithProtectedProperty.js
+++ b/tests/baselines/reference/classWithProtectedProperty.js
@@ -32,7 +32,7 @@ class D extends C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classWithPublicProperty.js b/tests/baselines/reference/classWithPublicProperty.js
index 4590324930..457afdcb2c 100644
--- a/tests/baselines/reference/classWithPublicProperty.js
+++ b/tests/baselines/reference/classWithPublicProperty.js
@@ -25,7 +25,7 @@ var r8: string = C.g();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/classdecl.js b/tests/baselines/reference/classdecl.js
index 632553c70c..d408cfc86c 100644
--- a/tests/baselines/reference/classdecl.js
+++ b/tests/baselines/reference/classdecl.js
@@ -97,7 +97,7 @@ class e {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/cloduleAcrossModuleDefinitions.js b/tests/baselines/reference/cloduleAcrossModuleDefinitions.js
index 0398b28611..44d3d307d3 100644
--- a/tests/baselines/reference/cloduleAcrossModuleDefinitions.js
+++ b/tests/baselines/reference/cloduleAcrossModuleDefinitions.js
@@ -19,7 +19,7 @@ var b: A.B; // ok
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/collisionArgumentsClassMethod.js b/tests/baselines/reference/collisionArgumentsClassMethod.js
index 56bbd852ca..4037552a2d 100644
--- a/tests/baselines/reference/collisionArgumentsClassMethod.js
+++ b/tests/baselines/reference/collisionArgumentsClassMethod.js
@@ -52,7 +52,7 @@ class c3 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/collisionCodeGenModuleWithMethodChildren.js b/tests/baselines/reference/collisionCodeGenModuleWithMethodChildren.js
index f844db00c0..adbc7cbf11 100644
--- a/tests/baselines/reference/collisionCodeGenModuleWithMethodChildren.js
+++ b/tests/baselines/reference/collisionCodeGenModuleWithMethodChildren.js
@@ -36,7 +36,7 @@ module M { // Shouldnt bn _M
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/collisionRestParameterClassMethod.js b/tests/baselines/reference/collisionRestParameterClassMethod.js
index 3aab32fe5a..3918bca3fe 100644
--- a/tests/baselines/reference/collisionRestParameterClassMethod.js
+++ b/tests/baselines/reference/collisionRestParameterClassMethod.js
@@ -42,7 +42,7 @@ class c3 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/collisionSuperAndLocalFunctionInMethod.js b/tests/baselines/reference/collisionSuperAndLocalFunctionInMethod.js
index 7a2c8cc6c5..5915b5d2ed 100644
--- a/tests/baselines/reference/collisionSuperAndLocalFunctionInMethod.js
+++ b/tests/baselines/reference/collisionSuperAndLocalFunctionInMethod.js
@@ -32,7 +32,7 @@ class c extends Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/collisionSuperAndLocalVarInMethod.js b/tests/baselines/reference/collisionSuperAndLocalVarInMethod.js
index c567ac3d5b..34ae153b80 100644
--- a/tests/baselines/reference/collisionSuperAndLocalVarInMethod.js
+++ b/tests/baselines/reference/collisionSuperAndLocalVarInMethod.js
@@ -22,7 +22,7 @@ class c extends Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/collisionSuperAndNameResolution.js b/tests/baselines/reference/collisionSuperAndNameResolution.js
index 39fe45fe6d..1394b5a0f4 100644
--- a/tests/baselines/reference/collisionSuperAndNameResolution.js
+++ b/tests/baselines/reference/collisionSuperAndNameResolution.js
@@ -25,7 +25,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/collisionSuperAndParameter.js b/tests/baselines/reference/collisionSuperAndParameter.js
index 4340022352..3580fd527a 100644
--- a/tests/baselines/reference/collisionSuperAndParameter.js
+++ b/tests/baselines/reference/collisionSuperAndParameter.js
@@ -66,7 +66,7 @@ class Foo4 extends Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/collisionSuperAndParameter1.js b/tests/baselines/reference/collisionSuperAndParameter1.js
index c36e2f1ddb..4877cdff4d 100644
--- a/tests/baselines/reference/collisionSuperAndParameter1.js
+++ b/tests/baselines/reference/collisionSuperAndParameter1.js
@@ -23,7 +23,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/collisionThisExpressionAndLocalVarInMethod.js b/tests/baselines/reference/collisionThisExpressionAndLocalVarInMethod.js
index 560bb4293e..98e3160ebb 100644
--- a/tests/baselines/reference/collisionThisExpressionAndLocalVarInMethod.js
+++ b/tests/baselines/reference/collisionThisExpressionAndLocalVarInMethod.js
@@ -22,7 +22,7 @@ class a {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/collisionThisExpressionAndLocalVarWithSuperExperssion.js b/tests/baselines/reference/collisionThisExpressionAndLocalVarWithSuperExperssion.js
index 90eff4333f..7a92dab3c4 100644
--- a/tests/baselines/reference/collisionThisExpressionAndLocalVarWithSuperExperssion.js
+++ b/tests/baselines/reference/collisionThisExpressionAndLocalVarWithSuperExperssion.js
@@ -22,7 +22,7 @@ class b2 extends a {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/collisionThisExpressionAndNameResolution.js b/tests/baselines/reference/collisionThisExpressionAndNameResolution.js
index 1ba2a0c4bb..af4ba24086 100644
--- a/tests/baselines/reference/collisionThisExpressionAndNameResolution.js
+++ b/tests/baselines/reference/collisionThisExpressionAndNameResolution.js
@@ -16,7 +16,7 @@ class Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/collisionThisExpressionAndParameter.js b/tests/baselines/reference/collisionThisExpressionAndParameter.js
index a5047243da..11d4b79ac9 100644
--- a/tests/baselines/reference/collisionThisExpressionAndParameter.js
+++ b/tests/baselines/reference/collisionThisExpressionAndParameter.js
@@ -97,7 +97,7 @@ declare function f4(_this: string); // no code gen - no error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/commentOnClassMethod1.js b/tests/baselines/reference/commentOnClassMethod1.js
index ff958b7698..60e5d1f7ed 100644
--- a/tests/baselines/reference/commentOnClassMethod1.js
+++ b/tests/baselines/reference/commentOnClassMethod1.js
@@ -11,7 +11,7 @@ class WebControls {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/commentOnSignature1.js b/tests/baselines/reference/commentOnSignature1.js
index e281f8f660..50319c90bd 100644
--- a/tests/baselines/reference/commentOnSignature1.js
+++ b/tests/baselines/reference/commentOnSignature1.js
@@ -45,7 +45,7 @@ function foo2(a: any): void {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/commentsClassMembers.js b/tests/baselines/reference/commentsClassMembers.js
index 43f5758b96..129200add3 100644
--- a/tests/baselines/reference/commentsClassMembers.js
+++ b/tests/baselines/reference/commentsClassMembers.js
@@ -221,7 +221,7 @@ cProperties_i.nc_p2 = cProperties_i.nc_p1;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/commentsInheritance.js b/tests/baselines/reference/commentsInheritance.js
index b088a6b08f..307486381b 100644
--- a/tests/baselines/reference/commentsInheritance.js
+++ b/tests/baselines/reference/commentsInheritance.js
@@ -154,7 +154,7 @@ i2_i = i3_i;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/commentsOverloads.js b/tests/baselines/reference/commentsOverloads.js
index c4a72f0cbf..9d6b89062d 100644
--- a/tests/baselines/reference/commentsOverloads.js
+++ b/tests/baselines/reference/commentsOverloads.js
@@ -178,7 +178,7 @@ var c5_i_2 = new c5("hello");
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/commentsTypeParameters.js b/tests/baselines/reference/commentsTypeParameters.js
index c77583e378..574306851b 100644
--- a/tests/baselines/reference/commentsTypeParameters.js
+++ b/tests/baselines/reference/commentsTypeParameters.js
@@ -19,7 +19,7 @@ function compare</**type*/T>(a: T, b: T) {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/commentsdoNotEmitComments.js b/tests/baselines/reference/commentsdoNotEmitComments.js
index ead5b5bc92..fc223c8e5d 100644
--- a/tests/baselines/reference/commentsdoNotEmitComments.js
+++ b/tests/baselines/reference/commentsdoNotEmitComments.js
@@ -96,7 +96,7 @@ var shade: color = color.green;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/commentsemitComments.js b/tests/baselines/reference/commentsemitComments.js
index 850ed9c226..4c6318f668 100644
--- a/tests/baselines/reference/commentsemitComments.js
+++ b/tests/baselines/reference/commentsemitComments.js
@@ -91,7 +91,7 @@ declare var x;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/comparisonOperatorWithIdenticalObjects.js b/tests/baselines/reference/comparisonOperatorWithIdenticalObjects.js
index a02c8278ed..3c9efa107b 100644
--- a/tests/baselines/reference/comparisonOperatorWithIdenticalObjects.js
+++ b/tests/baselines/reference/comparisonOperatorWithIdenticalObjects.js
@@ -198,7 +198,7 @@ var r8b7 = b6 !== a6;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/complexClassRelationships.js b/tests/baselines/reference/complexClassRelationships.js
index 8732e78630..a891fb8a5f 100644
--- a/tests/baselines/reference/complexClassRelationships.js
+++ b/tests/baselines/reference/complexClassRelationships.js
@@ -61,7 +61,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/complexNarrowingWithAny.js b/tests/baselines/reference/complexNarrowingWithAny.js
index bac4d0363e..108358b389 100644
--- a/tests/baselines/reference/complexNarrowingWithAny.js
+++ b/tests/baselines/reference/complexNarrowingWithAny.js
@@ -565,7 +565,7 @@ export function viewFactory_AppComponent0(viewUtils:any,parentInjector:any,decla
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/complicatedPrivacy.js b/tests/baselines/reference/complicatedPrivacy.js
index 9a36ad1589..52b1fb3061 100644
--- a/tests/baselines/reference/complicatedPrivacy.js
+++ b/tests/baselines/reference/complicatedPrivacy.js
@@ -108,7 +108,7 @@ module mglo5 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/compoundAssignmentLHSIsValue.js b/tests/baselines/reference/compoundAssignmentLHSIsValue.js
index 5623081a13..7596febf60 100644
--- a/tests/baselines/reference/compoundAssignmentLHSIsValue.js
+++ b/tests/baselines/reference/compoundAssignmentLHSIsValue.js
@@ -126,7 +126,7 @@ foo() += value;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/compoundExponentiationAssignmentLHSIsValue.js b/tests/baselines/reference/compoundExponentiationAssignmentLHSIsValue.js
index ca2459a23e..d8b7a70fce 100644
--- a/tests/baselines/reference/compoundExponentiationAssignmentLHSIsValue.js
+++ b/tests/baselines/reference/compoundExponentiationAssignmentLHSIsValue.js
@@ -89,7 +89,7 @@ foo() **= value;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames10_ES5.js b/tests/baselines/reference/computedPropertyNames10_ES5.js
index af70c23380..3f26a5f866 100644
--- a/tests/baselines/reference/computedPropertyNames10_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames10_ES5.js
@@ -20,7 +20,7 @@ var v = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames13_ES5.js b/tests/baselines/reference/computedPropertyNames13_ES5.js
index a3a1e6cc77..d5bbf58f9b 100644
--- a/tests/baselines/reference/computedPropertyNames13_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames13_ES5.js
@@ -20,7 +20,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames14_ES5.js b/tests/baselines/reference/computedPropertyNames14_ES5.js
index cb460e507a..4485487b9d 100644
--- a/tests/baselines/reference/computedPropertyNames14_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames14_ES5.js
@@ -13,7 +13,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames15_ES5.js b/tests/baselines/reference/computedPropertyNames15_ES5.js
index f6cdaf4abc..6da02707cc 100644
--- a/tests/baselines/reference/computedPropertyNames15_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames15_ES5.js
@@ -12,7 +12,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames21_ES5.js b/tests/baselines/reference/computedPropertyNames21_ES5.js
index 366b06bf9c..6652e2b08d 100644
--- a/tests/baselines/reference/computedPropertyNames21_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames21_ES5.js
@@ -10,7 +10,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames22_ES5.js b/tests/baselines/reference/computedPropertyNames22_ES5.js
index fbfaf84111..2d4c44b30b 100644
--- a/tests/baselines/reference/computedPropertyNames22_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames22_ES5.js
@@ -12,7 +12,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames23_ES5.js b/tests/baselines/reference/computedPropertyNames23_ES5.js
index f640239062..8f26305f05 100644
--- a/tests/baselines/reference/computedPropertyNames23_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames23_ES5.js
@@ -12,7 +12,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames24_ES5.js b/tests/baselines/reference/computedPropertyNames24_ES5.js
index af40d65848..9953be8fc6 100644
--- a/tests/baselines/reference/computedPropertyNames24_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames24_ES5.js
@@ -12,7 +12,7 @@ class C extends Base {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames25_ES5.js b/tests/baselines/reference/computedPropertyNames25_ES5.js
index 7dd0db2b6b..ec13f55ecf 100644
--- a/tests/baselines/reference/computedPropertyNames25_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames25_ES5.js
@@ -17,7 +17,7 @@ class C extends Base {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames26_ES5.js b/tests/baselines/reference/computedPropertyNames26_ES5.js
index 7fe8eea00c..cfcd0f8dd3 100644
--- a/tests/baselines/reference/computedPropertyNames26_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames26_ES5.js
@@ -14,7 +14,7 @@ class C extends Base {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames27_ES5.js b/tests/baselines/reference/computedPropertyNames27_ES5.js
index 6c68f6ee19..5ba407d17e 100644
--- a/tests/baselines/reference/computedPropertyNames27_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames27_ES5.js
@@ -19,7 +19,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames28_ES5.js b/tests/baselines/reference/computedPropertyNames28_ES5.js
index a801e9b536..31a3d61099 100644
--- a/tests/baselines/reference/computedPropertyNames28_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames28_ES5.js
@@ -24,7 +24,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames29_ES5.js b/tests/baselines/reference/computedPropertyNames29_ES5.js
index 3bd4238d16..df2b9f9fde 100644
--- a/tests/baselines/reference/computedPropertyNames29_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames29_ES5.js
@@ -14,7 +14,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames2_ES5.js b/tests/baselines/reference/computedPropertyNames2_ES5.js
index 4744a6c517..bde281f683 100644
--- a/tests/baselines/reference/computedPropertyNames2_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames2_ES5.js
@@ -14,7 +14,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames30_ES5.js b/tests/baselines/reference/computedPropertyNames30_ES5.js
index 24741b44de..bf5a154882 100644
--- a/tests/baselines/reference/computedPropertyNames30_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames30_ES5.js
@@ -29,7 +29,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames31_ES5.js b/tests/baselines/reference/computedPropertyNames31_ES5.js
index 2b0af1b947..1aba8200ed 100644
--- a/tests/baselines/reference/computedPropertyNames31_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames31_ES5.js
@@ -19,7 +19,7 @@ class C extends Base {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames32_ES5.js b/tests/baselines/reference/computedPropertyNames32_ES5.js
index 2f109349d5..43005920bd 100644
--- a/tests/baselines/reference/computedPropertyNames32_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames32_ES5.js
@@ -11,7 +11,7 @@ class C<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames33_ES5.js b/tests/baselines/reference/computedPropertyNames33_ES5.js
index 9babd05522..1a42f9c195 100644
--- a/tests/baselines/reference/computedPropertyNames33_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames33_ES5.js
@@ -13,7 +13,7 @@ class C<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames34_ES5.js b/tests/baselines/reference/computedPropertyNames34_ES5.js
index 0caee13fdd..f39cf2a6f8 100644
--- a/tests/baselines/reference/computedPropertyNames34_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames34_ES5.js
@@ -13,7 +13,7 @@ class C<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames3_ES5.js b/tests/baselines/reference/computedPropertyNames3_ES5.js
index ae85b07a97..e0c3fa7d93 100644
--- a/tests/baselines/reference/computedPropertyNames3_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames3_ES5.js
@@ -13,7 +13,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNames40_ES5.js b/tests/baselines/reference/computedPropertyNames40_ES5.js
index 1c08223b61..407f084d9b 100644
--- a/tests/baselines/reference/computedPropertyNames40_ES5.js
+++ b/tests/baselines/reference/computedPropertyNames40_ES5.js
@@ -14,7 +14,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNamesContextualType1_ES5.js b/tests/baselines/reference/computedPropertyNamesContextualType1_ES5.js
index 0059503531..12488af981 100644
--- a/tests/baselines/reference/computedPropertyNamesContextualType1_ES5.js
+++ b/tests/baselines/reference/computedPropertyNamesContextualType1_ES5.js
@@ -13,7 +13,7 @@ var o: I = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNamesContextualType2_ES5.js b/tests/baselines/reference/computedPropertyNamesContextualType2_ES5.js
index b1d59f8f30..6d0836e061 100644
--- a/tests/baselines/reference/computedPropertyNamesContextualType2_ES5.js
+++ b/tests/baselines/reference/computedPropertyNamesContextualType2_ES5.js
@@ -13,7 +13,7 @@ var o: I = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNamesContextualType3_ES5.js b/tests/baselines/reference/computedPropertyNamesContextualType3_ES5.js
index b2e2d969e9..dfeb0da718 100644
--- a/tests/baselines/reference/computedPropertyNamesContextualType3_ES5.js
+++ b/tests/baselines/reference/computedPropertyNamesContextualType3_ES5.js
@@ -12,7 +12,7 @@ var o: I = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNamesDeclarationEmit1_ES5.js b/tests/baselines/reference/computedPropertyNamesDeclarationEmit1_ES5.js
index af44f1aa05..f224cf5cf2 100644
--- a/tests/baselines/reference/computedPropertyNamesDeclarationEmit1_ES5.js
+++ b/tests/baselines/reference/computedPropertyNamesDeclarationEmit1_ES5.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNamesDeclarationEmit5_ES5.js b/tests/baselines/reference/computedPropertyNamesDeclarationEmit5_ES5.js
index c41f85fad4..f859fd16ed 100644
--- a/tests/baselines/reference/computedPropertyNamesDeclarationEmit5_ES5.js
+++ b/tests/baselines/reference/computedPropertyNamesDeclarationEmit5_ES5.js
@@ -10,7 +10,7 @@ var v = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNamesOnOverloads_ES5.js b/tests/baselines/reference/computedPropertyNamesOnOverloads_ES5.js
index fdfba4a8e7..d89c1a34ed 100644
--- a/tests/baselines/reference/computedPropertyNamesOnOverloads_ES5.js
+++ b/tests/baselines/reference/computedPropertyNamesOnOverloads_ES5.js
@@ -11,7 +11,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNamesSourceMap1_ES5.js b/tests/baselines/reference/computedPropertyNamesSourceMap1_ES5.js
index d5b036de58..a56d7f5c06 100644
--- a/tests/baselines/reference/computedPropertyNamesSourceMap1_ES5.js
+++ b/tests/baselines/reference/computedPropertyNamesSourceMap1_ES5.js
@@ -12,7 +12,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNamesSourceMap1_ES5.sourcemap.txt b/tests/baselines/reference/computedPropertyNamesSourceMap1_ES5.sourcemap.txt
index 219efededf..a4098b5eb4 100644
--- a/tests/baselines/reference/computedPropertyNamesSourceMap1_ES5.sourcemap.txt
+++ b/tests/baselines/reference/computedPropertyNamesSourceMap1_ES5.sourcemap.txt
@@ -11,7 +11,7 @@ sourceFile:computedPropertyNamesSourceMap1_ES5.ts
 >>>var __names = (this && this.__names) || (function() {
 >>>    var name = Object.defineProperty ? (function(proto, name) {
 >>>        Object.defineProperty(proto[name], 'name', { 
->>>            value: name, configurable: true, writable: false, enumerable: false
+>>>            value: name, configurable: true
 >>>        });
 >>>    }) : (function(proto, name) {
 >>>        proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNamesSourceMap2_ES5.js b/tests/baselines/reference/computedPropertyNamesSourceMap2_ES5.js
index 152418521d..7b7c4747c8 100644
--- a/tests/baselines/reference/computedPropertyNamesSourceMap2_ES5.js
+++ b/tests/baselines/reference/computedPropertyNamesSourceMap2_ES5.js
@@ -12,7 +12,7 @@ var v = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/computedPropertyNamesSourceMap2_ES5.sourcemap.txt b/tests/baselines/reference/computedPropertyNamesSourceMap2_ES5.sourcemap.txt
index 2c5eb32d0b..3e1278b8b7 100644
--- a/tests/baselines/reference/computedPropertyNamesSourceMap2_ES5.sourcemap.txt
+++ b/tests/baselines/reference/computedPropertyNamesSourceMap2_ES5.sourcemap.txt
@@ -11,7 +11,7 @@ sourceFile:computedPropertyNamesSourceMap2_ES5.ts
 >>>var __names = (this && this.__names) || (function() {
 >>>    var name = Object.defineProperty ? (function(proto, name) {
 >>>        Object.defineProperty(proto[name], 'name', { 
->>>            value: name, configurable: true, writable: false, enumerable: false
+>>>            value: name, configurable: true
 >>>        });
 >>>    }) : (function(proto, name) {
 >>>        proto[name].name = name;
diff --git a/tests/baselines/reference/conflictMarkerDiff3Trivia2.js b/tests/baselines/reference/conflictMarkerDiff3Trivia2.js
index 6119862eb7..fb5646d340 100644
--- a/tests/baselines/reference/conflictMarkerDiff3Trivia2.js
+++ b/tests/baselines/reference/conflictMarkerDiff3Trivia2.js
@@ -20,7 +20,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/conflictMarkerTrivia2.js b/tests/baselines/reference/conflictMarkerTrivia2.js
index 6af12c6af8..4b857f45c3 100644
--- a/tests/baselines/reference/conflictMarkerTrivia2.js
+++ b/tests/baselines/reference/conflictMarkerTrivia2.js
@@ -17,7 +17,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/constantOverloadFunction.js b/tests/baselines/reference/constantOverloadFunction.js
index 46b87c957f..53103b43a5 100644
--- a/tests/baselines/reference/constantOverloadFunction.js
+++ b/tests/baselines/reference/constantOverloadFunction.js
@@ -17,7 +17,7 @@ function foo(tagName: any): Base {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/constantOverloadFunctionNoSubtypeError.js b/tests/baselines/reference/constantOverloadFunctionNoSubtypeError.js
index 6d9a2ccf99..25d136bfb6 100644
--- a/tests/baselines/reference/constantOverloadFunctionNoSubtypeError.js
+++ b/tests/baselines/reference/constantOverloadFunctionNoSubtypeError.js
@@ -18,7 +18,7 @@ function foo(tagName: any): Base {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/constraintCheckInGenericBaseTypeReference.js b/tests/baselines/reference/constraintCheckInGenericBaseTypeReference.js
index a583aad5ca..913812b972 100644
--- a/tests/baselines/reference/constraintCheckInGenericBaseTypeReference.js
+++ b/tests/baselines/reference/constraintCheckInGenericBaseTypeReference.js
@@ -23,7 +23,7 @@ class Container {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/constructorOverloads1.js b/tests/baselines/reference/constructorOverloads1.js
index d2bc81a050..d654c14fd2 100644
--- a/tests/baselines/reference/constructorOverloads1.js
+++ b/tests/baselines/reference/constructorOverloads1.js
@@ -25,7 +25,7 @@ f1.bar2();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/constructorOverloads2.js b/tests/baselines/reference/constructorOverloads2.js
index 482af5b193..1629273ebf 100644
--- a/tests/baselines/reference/constructorOverloads2.js
+++ b/tests/baselines/reference/constructorOverloads2.js
@@ -29,7 +29,7 @@ f1.bar1();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/constructorOverloads3.js b/tests/baselines/reference/constructorOverloads3.js
index 36dbd7bfae..cacc56f8bb 100644
--- a/tests/baselines/reference/constructorOverloads3.js
+++ b/tests/baselines/reference/constructorOverloads3.js
@@ -36,7 +36,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/constructorReturnsInvalidType.js b/tests/baselines/reference/constructorReturnsInvalidType.js
index 0f6b163748..947f8f3c81 100644
--- a/tests/baselines/reference/constructorReturnsInvalidType.js
+++ b/tests/baselines/reference/constructorReturnsInvalidType.js
@@ -13,7 +13,7 @@ var x = new X();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/constructorWithIncompleteTypeAnnotation.js b/tests/baselines/reference/constructorWithIncompleteTypeAnnotation.js
index 88c7569c62..aa1d969336 100644
--- a/tests/baselines/reference/constructorWithIncompleteTypeAnnotation.js
+++ b/tests/baselines/reference/constructorWithIncompleteTypeAnnotation.js
@@ -283,7 +283,7 @@ TypeScriptAllInOne.Program.Main();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/contextualTypeAppliedToVarArgs.js b/tests/baselines/reference/contextualTypeAppliedToVarArgs.js
index 6738556dcd..84e50203ba 100644
--- a/tests/baselines/reference/contextualTypeAppliedToVarArgs.js
+++ b/tests/baselines/reference/contextualTypeAppliedToVarArgs.js
@@ -20,7 +20,7 @@ class Foo{
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/contextuallyTypedClassExpressionMethodDeclaration02.js b/tests/baselines/reference/contextuallyTypedClassExpressionMethodDeclaration02.js
index fc32a8fd12..d9dd2ae27a 100644
--- a/tests/baselines/reference/contextuallyTypedClassExpressionMethodDeclaration02.js
+++ b/tests/baselines/reference/contextuallyTypedClassExpressionMethodDeclaration02.js
@@ -53,7 +53,7 @@ function getFoo3(): Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/controlFlowSuperPropertyAccess.js b/tests/baselines/reference/controlFlowSuperPropertyAccess.js
index 2776eeeee6..b816d38132 100644
--- a/tests/baselines/reference/controlFlowSuperPropertyAccess.js
+++ b/tests/baselines/reference/controlFlowSuperPropertyAccess.js
@@ -23,7 +23,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/crashInresolveReturnStatement.js b/tests/baselines/reference/crashInresolveReturnStatement.js
index 8607d63633..3fbb8ff305 100644
--- a/tests/baselines/reference/crashInresolveReturnStatement.js
+++ b/tests/baselines/reference/crashInresolveReturnStatement.js
@@ -22,7 +22,7 @@ class WITDialogs {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/crashIntypeCheckObjectCreationExpression.js b/tests/baselines/reference/crashIntypeCheckObjectCreationExpression.js
index 23649d763f..9619edcd70 100644
--- a/tests/baselines/reference/crashIntypeCheckObjectCreationExpression.js
+++ b/tests/baselines/reference/crashIntypeCheckObjectCreationExpression.js
@@ -12,7 +12,7 @@ export class BuildWorkspaceService {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/crashRegressionTest.js b/tests/baselines/reference/crashRegressionTest.js
index 17d491f70b..b5bfaf9b4f 100644
--- a/tests/baselines/reference/crashRegressionTest.js
+++ b/tests/baselines/reference/crashRegressionTest.js
@@ -29,7 +29,7 @@ module MsPortal.Util.TemplateEngine {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declFileForClassWithMultipleBaseClasses.js b/tests/baselines/reference/declFileForClassWithMultipleBaseClasses.js
index f7b503b249..ee73566b91 100644
--- a/tests/baselines/reference/declFileForClassWithMultipleBaseClasses.js
+++ b/tests/baselines/reference/declFileForClassWithMultipleBaseClasses.js
@@ -30,7 +30,7 @@ interface I extends A, B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declFileForClassWithPrivateOverloadedFunction.js b/tests/baselines/reference/declFileForClassWithPrivateOverloadedFunction.js
index 9bc132115a..a8c369b165 100644
--- a/tests/baselines/reference/declFileForClassWithPrivateOverloadedFunction.js
+++ b/tests/baselines/reference/declFileForClassWithPrivateOverloadedFunction.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declFileForTypeParameters.js b/tests/baselines/reference/declFileForTypeParameters.js
index 01c3b75bce..cfec464dac 100644
--- a/tests/baselines/reference/declFileForTypeParameters.js
+++ b/tests/baselines/reference/declFileForTypeParameters.js
@@ -10,7 +10,7 @@ class C<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declFileMethods.js b/tests/baselines/reference/declFileMethods.js
index ad57603843..e132e26b16 100644
--- a/tests/baselines/reference/declFileMethods.js
+++ b/tests/baselines/reference/declFileMethods.js
@@ -194,7 +194,7 @@ interface I2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -293,7 +293,7 @@ exports.c1 = c1;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declFilePrivateMethodOverloads.js b/tests/baselines/reference/declFilePrivateMethodOverloads.js
index d33fd007cf..647246d3a9 100644
--- a/tests/baselines/reference/declFilePrivateMethodOverloads.js
+++ b/tests/baselines/reference/declFilePrivateMethodOverloads.js
@@ -26,7 +26,7 @@ declare class c2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declInput-2.js b/tests/baselines/reference/declInput-2.js
index 7682e2e040..7514ca8323 100644
--- a/tests/baselines/reference/declInput-2.js
+++ b/tests/baselines/reference/declInput-2.js
@@ -25,7 +25,7 @@ module M {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declInput.js b/tests/baselines/reference/declInput.js
index b5de6f0b98..a7ab01745f 100644
--- a/tests/baselines/reference/declInput.js
+++ b/tests/baselines/reference/declInput.js
@@ -14,7 +14,7 @@ class bar {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declInput3.js b/tests/baselines/reference/declInput3.js
index 409becec7b..3485b34d77 100644
--- a/tests/baselines/reference/declInput3.js
+++ b/tests/baselines/reference/declInput3.js
@@ -14,7 +14,7 @@ class bar {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declInput4.js b/tests/baselines/reference/declInput4.js
index a7e2e53dcb..fc9552dc4c 100644
--- a/tests/baselines/reference/declInput4.js
+++ b/tests/baselines/reference/declInput4.js
@@ -19,7 +19,7 @@ module M {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declarationEmitClassMemberNameConflict.js b/tests/baselines/reference/declarationEmitClassMemberNameConflict.js
index a40f4bf5a5..7d2622f57c 100644
--- a/tests/baselines/reference/declarationEmitClassMemberNameConflict.js
+++ b/tests/baselines/reference/declarationEmitClassMemberNameConflict.js
@@ -40,7 +40,7 @@ export class C4 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declarationEmitProtectedMembers.js b/tests/baselines/reference/declarationEmitProtectedMembers.js
index 6158ff50ca..6e4745e956 100644
--- a/tests/baselines/reference/declarationEmitProtectedMembers.js
+++ b/tests/baselines/reference/declarationEmitProtectedMembers.js
@@ -53,7 +53,7 @@ class C4 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declarationEmitThisPredicates01.js b/tests/baselines/reference/declarationEmitThisPredicates01.js
index bc6aab26f7..aaf9f72f4c 100644
--- a/tests/baselines/reference/declarationEmitThisPredicates01.js
+++ b/tests/baselines/reference/declarationEmitThisPredicates01.js
@@ -13,7 +13,7 @@ export class D extends C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declarationEmitThisPredicatesWithPrivateName01.js b/tests/baselines/reference/declarationEmitThisPredicatesWithPrivateName01.js
index d398c18158..6036280052 100644
--- a/tests/baselines/reference/declarationEmitThisPredicatesWithPrivateName01.js
+++ b/tests/baselines/reference/declarationEmitThisPredicatesWithPrivateName01.js
@@ -13,7 +13,7 @@ class D extends C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declarationFiles.js b/tests/baselines/reference/declarationFiles.js
index 1b706a5c9b..7fe3de30b7 100644
--- a/tests/baselines/reference/declarationFiles.js
+++ b/tests/baselines/reference/declarationFiles.js
@@ -51,7 +51,7 @@ class C4 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declarationMerging1.js b/tests/baselines/reference/declarationMerging1.js
index 21cbc0d000..2cbfb98c28 100644
--- a/tests/baselines/reference/declarationMerging1.js
+++ b/tests/baselines/reference/declarationMerging1.js
@@ -15,7 +15,7 @@ interface A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/declarationMerging2.js b/tests/baselines/reference/declarationMerging2.js
index 586435bf50..3d15510ca8 100644
--- a/tests/baselines/reference/declarationMerging2.js
+++ b/tests/baselines/reference/declarationMerging2.js
@@ -18,7 +18,7 @@ declare module "./a" {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/decoratorChecksFunctionBodies.js b/tests/baselines/reference/decoratorChecksFunctionBodies.js
index df4c2c873a..a692be99b4 100644
--- a/tests/baselines/reference/decoratorChecksFunctionBodies.js
+++ b/tests/baselines/reference/decoratorChecksFunctionBodies.js
@@ -18,7 +18,7 @@ class A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/decoratorMetadata.js b/tests/baselines/reference/decoratorMetadata.js
index ec7d644f7c..b3ca0131c2 100644
--- a/tests/baselines/reference/decoratorMetadata.js
+++ b/tests/baselines/reference/decoratorMetadata.js
@@ -32,7 +32,7 @@ exports.default = Service;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/decoratorMetadataRestParameterWithImportedType.js b/tests/baselines/reference/decoratorMetadataRestParameterWithImportedType.js
index 1bf8673e1c..7803c688f3 100644
--- a/tests/baselines/reference/decoratorMetadataRestParameterWithImportedType.js
+++ b/tests/baselines/reference/decoratorMetadataRestParameterWithImportedType.js
@@ -71,7 +71,7 @@ exports.SomeClass2 = SomeClass2;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/decoratorOnClass9.js b/tests/baselines/reference/decoratorOnClass9.js
index a3146727a3..2d5ec9f210 100644
--- a/tests/baselines/reference/decoratorOnClass9.js
+++ b/tests/baselines/reference/decoratorOnClass9.js
@@ -27,7 +27,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/decoratorOnClassMethod1.js b/tests/baselines/reference/decoratorOnClassMethod1.js
index 61c37558a8..040b93fb16 100644
--- a/tests/baselines/reference/decoratorOnClassMethod1.js
+++ b/tests/baselines/reference/decoratorOnClassMethod1.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/decoratorOnClassMethod10.js b/tests/baselines/reference/decoratorOnClassMethod10.js
index 550ec8e67b..1657da18b8 100644
--- a/tests/baselines/reference/decoratorOnClassMethod10.js
+++ b/tests/baselines/reference/decoratorOnClassMethod10.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/decoratorOnClassMethod11.js b/tests/baselines/reference/decoratorOnClassMethod11.js
index 4f3fd9d1ea..23bf66cd7a 100644
--- a/tests/baselines/reference/decoratorOnClassMethod11.js
+++ b/tests/baselines/reference/decoratorOnClassMethod11.js
@@ -12,7 +12,7 @@ module M {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/decoratorOnClassMethod12.js b/tests/baselines/reference/decoratorOnClassMethod12.js
index 1a3fce78c3..e882a1314a 100644
--- a/tests/baselines/reference/decoratorOnClassMethod12.js
+++ b/tests/baselines/reference/decoratorOnClassMethod12.js
@@ -13,7 +13,7 @@ module M {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/decoratorOnClassMethod2.js b/tests/baselines/reference/decoratorOnClassMethod2.js
index 78395182d5..db84d2638a 100644
--- a/tests/baselines/reference/decoratorOnClassMethod2.js
+++ b/tests/baselines/reference/decoratorOnClassMethod2.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/decoratorOnClassMethod3.js b/tests/baselines/reference/decoratorOnClassMethod3.js
index d692b49453..1da1ad0605 100644
--- a/tests/baselines/reference/decoratorOnClassMethod3.js
+++ b/tests/baselines/reference/decoratorOnClassMethod3.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/decoratorOnClassMethod8.js b/tests/baselines/reference/decoratorOnClassMethod8.js
index e3c9382d43..820837de3e 100644
--- a/tests/baselines/reference/decoratorOnClassMethod8.js
+++ b/tests/baselines/reference/decoratorOnClassMethod8.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/decoratorOnClassMethodOverload1.js b/tests/baselines/reference/decoratorOnClassMethodOverload1.js
index f904faf6b0..3e9e94ec20 100644
--- a/tests/baselines/reference/decoratorOnClassMethodOverload1.js
+++ b/tests/baselines/reference/decoratorOnClassMethodOverload1.js
@@ -11,7 +11,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/decoratorOnClassMethodOverload2.js b/tests/baselines/reference/decoratorOnClassMethodOverload2.js
index ccc1c4bf8b..d2b36bd3f7 100644
--- a/tests/baselines/reference/decoratorOnClassMethodOverload2.js
+++ b/tests/baselines/reference/decoratorOnClassMethodOverload2.js
@@ -11,7 +11,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/decoratorOnClassMethodParameter1.js b/tests/baselines/reference/decoratorOnClassMethodParameter1.js
index d75b3d6d01..5de11f915b 100644
--- a/tests/baselines/reference/decoratorOnClassMethodParameter1.js
+++ b/tests/baselines/reference/decoratorOnClassMethodParameter1.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/defaultArgsInOverloads.js b/tests/baselines/reference/defaultArgsInOverloads.js
index e802062b17..f9be54b989 100644
--- a/tests/baselines/reference/defaultArgsInOverloads.js
+++ b/tests/baselines/reference/defaultArgsInOverloads.js
@@ -23,7 +23,7 @@ var f: (a = 3) => number;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassConstructorWithExplicitReturns01.js b/tests/baselines/reference/derivedClassConstructorWithExplicitReturns01.js
index b8fcab9401..10804a6782 100644
--- a/tests/baselines/reference/derivedClassConstructorWithExplicitReturns01.js
+++ b/tests/baselines/reference/derivedClassConstructorWithExplicitReturns01.js
@@ -37,7 +37,7 @@ class D extends C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassConstructorWithExplicitReturns01.sourcemap.txt b/tests/baselines/reference/derivedClassConstructorWithExplicitReturns01.sourcemap.txt
index 12d005b9a5..e4c76a0a74 100644
--- a/tests/baselines/reference/derivedClassConstructorWithExplicitReturns01.sourcemap.txt
+++ b/tests/baselines/reference/derivedClassConstructorWithExplicitReturns01.sourcemap.txt
@@ -11,7 +11,7 @@ sourceFile:derivedClassConstructorWithExplicitReturns01.ts
 >>>var __names = (this && this.__names) || (function() {
 >>>    var name = Object.defineProperty ? (function(proto, name) {
 >>>        Object.defineProperty(proto[name], 'name', { 
->>>            value: name, configurable: true, writable: false, enumerable: false
+>>>            value: name, configurable: true
 >>>        });
 >>>    }) : (function(proto, name) {
 >>>        proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassFunctionOverridesBaseClassAccessor.js b/tests/baselines/reference/derivedClassFunctionOverridesBaseClassAccessor.js
index 5fc6f693f2..fdaf72f7d7 100644
--- a/tests/baselines/reference/derivedClassFunctionOverridesBaseClassAccessor.js
+++ b/tests/baselines/reference/derivedClassFunctionOverridesBaseClassAccessor.js
@@ -28,7 +28,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassIncludesInheritedMembers.js b/tests/baselines/reference/derivedClassIncludesInheritedMembers.js
index 941eea28ed..0b592d82a9 100644
--- a/tests/baselines/reference/derivedClassIncludesInheritedMembers.js
+++ b/tests/baselines/reference/derivedClassIncludesInheritedMembers.js
@@ -44,7 +44,7 @@ var r8 = d2[1];
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassOverridesPrivateFunction1.js b/tests/baselines/reference/derivedClassOverridesPrivateFunction1.js
index e9b0a050be..243bcc8673 100644
--- a/tests/baselines/reference/derivedClassOverridesPrivateFunction1.js
+++ b/tests/baselines/reference/derivedClassOverridesPrivateFunction1.js
@@ -19,7 +19,7 @@ new DerivedClass();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassOverridesProtectedMembers.js b/tests/baselines/reference/derivedClassOverridesProtectedMembers.js
index afe13ab98b..a29f77de19 100644
--- a/tests/baselines/reference/derivedClassOverridesProtectedMembers.js
+++ b/tests/baselines/reference/derivedClassOverridesProtectedMembers.js
@@ -39,7 +39,7 @@ class Derived extends Base {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassOverridesProtectedMembers2.js b/tests/baselines/reference/derivedClassOverridesProtectedMembers2.js
index 7964206677..de4780abeb 100644
--- a/tests/baselines/reference/derivedClassOverridesProtectedMembers2.js
+++ b/tests/baselines/reference/derivedClassOverridesProtectedMembers2.js
@@ -67,7 +67,7 @@ var r8 = d2[1];
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassOverridesProtectedMembers3.js b/tests/baselines/reference/derivedClassOverridesProtectedMembers3.js
index e0d58d6683..34fb92ef79 100644
--- a/tests/baselines/reference/derivedClassOverridesProtectedMembers3.js
+++ b/tests/baselines/reference/derivedClassOverridesProtectedMembers3.js
@@ -74,7 +74,7 @@ class Derived10 extends Base {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassOverridesPublicMembers.js b/tests/baselines/reference/derivedClassOverridesPublicMembers.js
index 234e35958c..c240f46553 100644
--- a/tests/baselines/reference/derivedClassOverridesPublicMembers.js
+++ b/tests/baselines/reference/derivedClassOverridesPublicMembers.js
@@ -66,7 +66,7 @@ var r8 = d2[1];
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassSuperCallsInNonConstructorMembers.js b/tests/baselines/reference/derivedClassSuperCallsInNonConstructorMembers.js
index fc152c0b7c..c5ebd6a9a1 100644
--- a/tests/baselines/reference/derivedClassSuperCallsInNonConstructorMembers.js
+++ b/tests/baselines/reference/derivedClassSuperCallsInNonConstructorMembers.js
@@ -46,7 +46,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassTransitivity.js b/tests/baselines/reference/derivedClassTransitivity.js
index 33aa61db48..6bbccb2ca9 100644
--- a/tests/baselines/reference/derivedClassTransitivity.js
+++ b/tests/baselines/reference/derivedClassTransitivity.js
@@ -25,7 +25,7 @@ var r2 = e.foo('');
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassTransitivity2.js b/tests/baselines/reference/derivedClassTransitivity2.js
index 39a9d91866..9d74b99637 100644
--- a/tests/baselines/reference/derivedClassTransitivity2.js
+++ b/tests/baselines/reference/derivedClassTransitivity2.js
@@ -25,7 +25,7 @@ var r2 = e.foo(1, '');
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassTransitivity3.js b/tests/baselines/reference/derivedClassTransitivity3.js
index 5b6f72f5ea..937750144e 100644
--- a/tests/baselines/reference/derivedClassTransitivity3.js
+++ b/tests/baselines/reference/derivedClassTransitivity3.js
@@ -25,7 +25,7 @@ var r2 = e.foo('', 1);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassTransitivity4.js b/tests/baselines/reference/derivedClassTransitivity4.js
index 68162bb8a6..8adcbc4b93 100644
--- a/tests/baselines/reference/derivedClassTransitivity4.js
+++ b/tests/baselines/reference/derivedClassTransitivity4.js
@@ -25,7 +25,7 @@ var r2 = e.foo('');
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassWithAny.js b/tests/baselines/reference/derivedClassWithAny.js
index 75dbf8c61c..3f91b9a9dc 100644
--- a/tests/baselines/reference/derivedClassWithAny.js
+++ b/tests/baselines/reference/derivedClassWithAny.js
@@ -63,7 +63,7 @@ var r = c.foo(); // e.foo would return string
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassWithPrivateInstanceShadowingProtectedInstance.js b/tests/baselines/reference/derivedClassWithPrivateInstanceShadowingProtectedInstance.js
index 51b82b3f78..453117078c 100644
--- a/tests/baselines/reference/derivedClassWithPrivateInstanceShadowingProtectedInstance.js
+++ b/tests/baselines/reference/derivedClassWithPrivateInstanceShadowingProtectedInstance.js
@@ -25,7 +25,7 @@ class Derived extends Base {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClassWithPrivateInstanceShadowingPublicInstance.js b/tests/baselines/reference/derivedClassWithPrivateInstanceShadowingPublicInstance.js
index db82dcdc6d..14f1ad00c9 100644
--- a/tests/baselines/reference/derivedClassWithPrivateInstanceShadowingPublicInstance.js
+++ b/tests/baselines/reference/derivedClassWithPrivateInstanceShadowingPublicInstance.js
@@ -36,7 +36,7 @@ Derived.a = 2; // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedClasses.js b/tests/baselines/reference/derivedClasses.js
index 1631e9b970..e56622ec69 100644
--- a/tests/baselines/reference/derivedClasses.js
+++ b/tests/baselines/reference/derivedClasses.js
@@ -44,7 +44,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedGenericClassWithAny.js b/tests/baselines/reference/derivedGenericClassWithAny.js
index 7d352e5a57..32c44c1903 100644
--- a/tests/baselines/reference/derivedGenericClassWithAny.js
+++ b/tests/baselines/reference/derivedGenericClassWithAny.js
@@ -46,7 +46,7 @@ var r = c.foo(); // e.foo would return string
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedTypeAccessesHiddenBaseCallViaSuperPropertyAccess.js b/tests/baselines/reference/derivedTypeAccessesHiddenBaseCallViaSuperPropertyAccess.js
index 0ef964991e..9fa717e2c6 100644
--- a/tests/baselines/reference/derivedTypeAccessesHiddenBaseCallViaSuperPropertyAccess.js
+++ b/tests/baselines/reference/derivedTypeAccessesHiddenBaseCallViaSuperPropertyAccess.js
@@ -21,7 +21,7 @@ class Derived extends Base {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/derivedTypeCallingBaseImplWithOptionalParams.js b/tests/baselines/reference/derivedTypeCallingBaseImplWithOptionalParams.js
index 7981a31b36..13f44c0f42 100644
--- a/tests/baselines/reference/derivedTypeCallingBaseImplWithOptionalParams.js
+++ b/tests/baselines/reference/derivedTypeCallingBaseImplWithOptionalParams.js
@@ -17,7 +17,7 @@ y.myMethod(); // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/destructuringParameterDeclaration1ES5.js b/tests/baselines/reference/destructuringParameterDeclaration1ES5.js
index 79213b521e..12e36a4593 100644
--- a/tests/baselines/reference/destructuringParameterDeclaration1ES5.js
+++ b/tests/baselines/reference/destructuringParameterDeclaration1ES5.js
@@ -104,7 +104,7 @@ function e5({x: [a, b, c]}: { x: [number, number, number] }) { }  // x has type
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/destructuringParameterDeclaration1ES5iterable.js b/tests/baselines/reference/destructuringParameterDeclaration1ES5iterable.js
index c30fbffb11..f74e7cd057 100644
--- a/tests/baselines/reference/destructuringParameterDeclaration1ES5iterable.js
+++ b/tests/baselines/reference/destructuringParameterDeclaration1ES5iterable.js
@@ -104,7 +104,7 @@ function e5({x: [a, b, c]}: { x: [number, number, number] }) { }  // x has type
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/destructuringParameterDeclaration2.js b/tests/baselines/reference/destructuringParameterDeclaration2.js
index 5523945b25..241f7936b2 100644
--- a/tests/baselines/reference/destructuringParameterDeclaration2.js
+++ b/tests/baselines/reference/destructuringParameterDeclaration2.js
@@ -75,7 +75,7 @@ function e0({x: [number, number, number]}) { }  // error, duplicate identifier;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/destructuringParameterProperties2.js b/tests/baselines/reference/destructuringParameterProperties2.js
index 31e41d091c..4ab61a4fce 100644
--- a/tests/baselines/reference/destructuringParameterProperties2.js
+++ b/tests/baselines/reference/destructuringParameterProperties2.js
@@ -33,7 +33,7 @@ var [z_a, z_b, z_c] = [z.getA(), z.getB(), z.getC()];
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/destructuringParameterProperties3.js b/tests/baselines/reference/destructuringParameterProperties3.js
index 98284a97bc..e139b4e575 100644
--- a/tests/baselines/reference/destructuringParameterProperties3.js
+++ b/tests/baselines/reference/destructuringParameterProperties3.js
@@ -36,7 +36,7 @@ var [z_a, z_b, z_c] = [z.getA(), z.getB(), z.getC()];
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/detachedCommentAtStartOfFunctionBody1.js b/tests/baselines/reference/detachedCommentAtStartOfFunctionBody1.js
index 27926bb2b9..a2eb2aaa61 100644
--- a/tests/baselines/reference/detachedCommentAtStartOfFunctionBody1.js
+++ b/tests/baselines/reference/detachedCommentAtStartOfFunctionBody1.js
@@ -12,7 +12,7 @@ class TestFile {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/detachedCommentAtStartOfFunctionBody2.js b/tests/baselines/reference/detachedCommentAtStartOfFunctionBody2.js
index 93358d1abf..e3dcee50ec 100644
--- a/tests/baselines/reference/detachedCommentAtStartOfFunctionBody2.js
+++ b/tests/baselines/reference/detachedCommentAtStartOfFunctionBody2.js
@@ -13,7 +13,7 @@ class TestFile {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/detachedCommentAtStartOfLambdaFunction1.js b/tests/baselines/reference/detachedCommentAtStartOfLambdaFunction1.js
index 2a4b23bd30..3708186061 100644
--- a/tests/baselines/reference/detachedCommentAtStartOfLambdaFunction1.js
+++ b/tests/baselines/reference/detachedCommentAtStartOfLambdaFunction1.js
@@ -14,7 +14,7 @@ class TestFile {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/detachedCommentAtStartOfLambdaFunction2.js b/tests/baselines/reference/detachedCommentAtStartOfLambdaFunction2.js
index 034674da0a..96ebcf9b2a 100644
--- a/tests/baselines/reference/detachedCommentAtStartOfLambdaFunction2.js
+++ b/tests/baselines/reference/detachedCommentAtStartOfLambdaFunction2.js
@@ -15,7 +15,7 @@ class TestFile {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/doNotEmitPinnedCommentOnNotEmittedNode.js b/tests/baselines/reference/doNotEmitPinnedCommentOnNotEmittedNode.js
index e16d8cc162..8b4358c936 100644
--- a/tests/baselines/reference/doNotEmitPinnedCommentOnNotEmittedNode.js
+++ b/tests/baselines/reference/doNotEmitPinnedCommentOnNotEmittedNode.js
@@ -14,7 +14,7 @@ declare var OData: any;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/doNotEmitPinnedCommentOnNotEmittedNodets.js b/tests/baselines/reference/doNotEmitPinnedCommentOnNotEmittedNodets.js
index ff43f4a7cc..2248390d76 100644
--- a/tests/baselines/reference/doNotEmitPinnedCommentOnNotEmittedNodets.js
+++ b/tests/baselines/reference/doNotEmitPinnedCommentOnNotEmittedNodets.js
@@ -12,7 +12,7 @@ declare var OData: any;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/dottedSymbolResolution1.js b/tests/baselines/reference/dottedSymbolResolution1.js
index 87a4bfe8fc..bfc72f61e5 100644
--- a/tests/baselines/reference/dottedSymbolResolution1.js
+++ b/tests/baselines/reference/dottedSymbolResolution1.js
@@ -29,7 +29,7 @@ function _setBarAndText(): void {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/downlevelLetConst16.js b/tests/baselines/reference/downlevelLetConst16.js
index 56f230b67e..b0feb49cbf 100644
--- a/tests/baselines/reference/downlevelLetConst16.js
+++ b/tests/baselines/reference/downlevelLetConst16.js
@@ -232,7 +232,7 @@ function foo12() {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/duplicateClassElements.js b/tests/baselines/reference/duplicateClassElements.js
index 58727cb755..32a03af489 100644
--- a/tests/baselines/reference/duplicateClassElements.js
+++ b/tests/baselines/reference/duplicateClassElements.js
@@ -48,7 +48,7 @@ class a {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/duplicateLocalVariable1.js b/tests/baselines/reference/duplicateLocalVariable1.js
index f59969ed30..f5c02d5b35 100644
--- a/tests/baselines/reference/duplicateLocalVariable1.js
+++ b/tests/baselines/reference/duplicateLocalVariable1.js
@@ -349,7 +349,7 @@ export var tests: TestRunner = (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/duplicateLocalVariable2.js b/tests/baselines/reference/duplicateLocalVariable2.js
index c5155b033a..47cc300710 100644
--- a/tests/baselines/reference/duplicateLocalVariable2.js
+++ b/tests/baselines/reference/duplicateLocalVariable2.js
@@ -39,7 +39,7 @@ export var tests: TestRunner = (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/duplicatePropertyNames.js b/tests/baselines/reference/duplicatePropertyNames.js
index db3ce57366..757fd60aaf 100644
--- a/tests/baselines/reference/duplicatePropertyNames.js
+++ b/tests/baselines/reference/duplicatePropertyNames.js
@@ -53,7 +53,7 @@ var b = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/duplicateTypeParameters2.js b/tests/baselines/reference/duplicateTypeParameters2.js
index 50ec7c7c72..0678c513cc 100644
--- a/tests/baselines/reference/duplicateTypeParameters2.js
+++ b/tests/baselines/reference/duplicateTypeParameters2.js
@@ -8,7 +8,7 @@ interface I<T extends A, T extends B> {}
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/duplicateVariablesByScope.js b/tests/baselines/reference/duplicateVariablesByScope.js
index 7e21154755..9a80abc045 100644
--- a/tests/baselines/reference/duplicateVariablesByScope.js
+++ b/tests/baselines/reference/duplicateVariablesByScope.js
@@ -36,7 +36,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/emitArrowFunctionWhenUsingArguments12.js b/tests/baselines/reference/emitArrowFunctionWhenUsingArguments12.js
index 53eff83d74..8f75db1289 100644
--- a/tests/baselines/reference/emitArrowFunctionWhenUsingArguments12.js
+++ b/tests/baselines/reference/emitArrowFunctionWhenUsingArguments12.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/emitCapturingThisInTupleDestructuring2.js b/tests/baselines/reference/emitCapturingThisInTupleDestructuring2.js
index 9bac87c157..8e91cc3417 100644
--- a/tests/baselines/reference/emitCapturingThisInTupleDestructuring2.js
+++ b/tests/baselines/reference/emitCapturingThisInTupleDestructuring2.js
@@ -14,7 +14,7 @@ class B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/emitClassExpressionInDeclarationFile.js b/tests/baselines/reference/emitClassExpressionInDeclarationFile.js
index 4c937f4299..d44d1aa68d 100644
--- a/tests/baselines/reference/emitClassExpressionInDeclarationFile.js
+++ b/tests/baselines/reference/emitClassExpressionInDeclarationFile.js
@@ -35,7 +35,7 @@ test.tags();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/emitClassExpressionInDeclarationFile2.js b/tests/baselines/reference/emitClassExpressionInDeclarationFile2.js
index e9ee74a63e..3559fcd242 100644
--- a/tests/baselines/reference/emitClassExpressionInDeclarationFile2.js
+++ b/tests/baselines/reference/emitClassExpressionInDeclarationFile2.js
@@ -34,7 +34,7 @@ test.tags();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/emitDecoratorMetadata_object.js b/tests/baselines/reference/emitDecoratorMetadata_object.js
index 7a3552f86f..2e9b165e19 100644
--- a/tests/baselines/reference/emitDecoratorMetadata_object.js
+++ b/tests/baselines/reference/emitDecoratorMetadata_object.js
@@ -14,7 +14,7 @@ class A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/emitDecoratorMetadata_restArgs.js b/tests/baselines/reference/emitDecoratorMetadata_restArgs.js
index 4c2aebbd23..eedff464cd 100644
--- a/tests/baselines/reference/emitDecoratorMetadata_restArgs.js
+++ b/tests/baselines/reference/emitDecoratorMetadata_restArgs.js
@@ -21,7 +21,7 @@ class B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/emitDefaultParametersMethod.js b/tests/baselines/reference/emitDefaultParametersMethod.js
index 58a34d9509..c25328e90b 100644
--- a/tests/baselines/reference/emitDefaultParametersMethod.js
+++ b/tests/baselines/reference/emitDefaultParametersMethod.js
@@ -21,7 +21,7 @@ class E {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/emitMemberAccessExpression.js b/tests/baselines/reference/emitMemberAccessExpression.js
index d3a05ce0af..ff283cdf80 100644
--- a/tests/baselines/reference/emitMemberAccessExpression.js
+++ b/tests/baselines/reference/emitMemberAccessExpression.js
@@ -30,7 +30,7 @@ module Microsoft.PeopleAtWork.Model {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/emitRestParametersMethod.js b/tests/baselines/reference/emitRestParametersMethod.js
index 9cbffe48f0..a0e89134de 100644
--- a/tests/baselines/reference/emitRestParametersMethod.js
+++ b/tests/baselines/reference/emitRestParametersMethod.js
@@ -17,7 +17,7 @@ class D {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/emitThisInSuperMethodCall.js b/tests/baselines/reference/emitThisInSuperMethodCall.js
index 9a6984e704..0c4e9c8ffb 100644
--- a/tests/baselines/reference/emitThisInSuperMethodCall.js
+++ b/tests/baselines/reference/emitThisInSuperMethodCall.js
@@ -31,7 +31,7 @@ class RegisteredUser extends User {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/emitter.asyncGenerators.classMethods.es5.js b/tests/baselines/reference/emitter.asyncGenerators.classMethods.es5.js
index 81b4109059..32feaf2fdf 100644
--- a/tests/baselines/reference/emitter.asyncGenerators.classMethods.es5.js
+++ b/tests/baselines/reference/emitter.asyncGenerators.classMethods.es5.js
@@ -64,7 +64,7 @@ class C9 extends B9 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -131,7 +131,7 @@ var C1 = (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -204,7 +204,7 @@ var C2 = (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -277,7 +277,7 @@ var C3 = (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -371,7 +371,7 @@ var C4 = (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -472,7 +472,7 @@ var C5 = (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -545,7 +545,7 @@ var C6 = (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -612,7 +612,7 @@ var C7 = (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -682,7 +682,7 @@ var C8 = (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/errorRecoveryInClassDeclaration.js b/tests/baselines/reference/errorRecoveryInClassDeclaration.js
index 1c9a761269..334460d76d 100644
--- a/tests/baselines/reference/errorRecoveryInClassDeclaration.js
+++ b/tests/baselines/reference/errorRecoveryInClassDeclaration.js
@@ -11,7 +11,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/errorSuperCalls.js b/tests/baselines/reference/errorSuperCalls.js
index e4e192ff77..af47591d72 100644
--- a/tests/baselines/reference/errorSuperCalls.js
+++ b/tests/baselines/reference/errorSuperCalls.js
@@ -78,7 +78,7 @@ class OtherDerived extends OtherBase {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/errorSuperPropertyAccess.js b/tests/baselines/reference/errorSuperPropertyAccess.js
index 92cc81eed0..da850720a8 100644
--- a/tests/baselines/reference/errorSuperPropertyAccess.js
+++ b/tests/baselines/reference/errorSuperPropertyAccess.js
@@ -132,7 +132,7 @@ var obj = { n: super.wat, p: super.foo() };
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/errorsInGenericTypeReference.js b/tests/baselines/reference/errorsInGenericTypeReference.js
index a4a3e3d8f3..f9daaea58d 100644
--- a/tests/baselines/reference/errorsInGenericTypeReference.js
+++ b/tests/baselines/reference/errorsInGenericTypeReference.js
@@ -75,7 +75,7 @@ interface testInterface2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es3-amd.js b/tests/baselines/reference/es3-amd.js
index 4c68ada569..a348f8c3f1 100644
--- a/tests/baselines/reference/es3-amd.js
+++ b/tests/baselines/reference/es3-amd.js
@@ -16,7 +16,7 @@ class A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es3-declaration-amd.js b/tests/baselines/reference/es3-declaration-amd.js
index 99814c9e3f..a44d81a499 100644
--- a/tests/baselines/reference/es3-declaration-amd.js
+++ b/tests/baselines/reference/es3-declaration-amd.js
@@ -16,7 +16,7 @@ class A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es3-sourcemap-amd.js b/tests/baselines/reference/es3-sourcemap-amd.js
index ecf68f3c7e..12d2291614 100644
--- a/tests/baselines/reference/es3-sourcemap-amd.js
+++ b/tests/baselines/reference/es3-sourcemap-amd.js
@@ -16,7 +16,7 @@ class A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es3-sourcemap-amd.sourcemap.txt b/tests/baselines/reference/es3-sourcemap-amd.sourcemap.txt
index d7f6ca493a..1c091ba056 100644
--- a/tests/baselines/reference/es3-sourcemap-amd.sourcemap.txt
+++ b/tests/baselines/reference/es3-sourcemap-amd.sourcemap.txt
@@ -11,7 +11,7 @@ sourceFile:es3-sourcemap-amd.ts
 >>>var __names = (this && this.__names) || (function() {
 >>>    var name = Object.defineProperty ? (function(proto, name) {
 >>>        Object.defineProperty(proto[name], 'name', { 
->>>            value: name, configurable: true, writable: false, enumerable: false
+>>>            value: name, configurable: true
 >>>        });
 >>>    }) : (function(proto, name) {
 >>>        proto[name].name = name;
diff --git a/tests/baselines/reference/es5-amd.js b/tests/baselines/reference/es5-amd.js
index 2620ba51f9..e29defa1b8 100644
--- a/tests/baselines/reference/es5-amd.js
+++ b/tests/baselines/reference/es5-amd.js
@@ -16,7 +16,7 @@ class A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5-commonjs.js b/tests/baselines/reference/es5-commonjs.js
index f0024afbc9..912d28b519 100644
--- a/tests/baselines/reference/es5-commonjs.js
+++ b/tests/baselines/reference/es5-commonjs.js
@@ -18,7 +18,7 @@ export default class A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5-commonjs4.js b/tests/baselines/reference/es5-commonjs4.js
index 8615128f27..0872fa02ca 100644
--- a/tests/baselines/reference/es5-commonjs4.js
+++ b/tests/baselines/reference/es5-commonjs4.js
@@ -19,7 +19,7 @@ export var __esModule = 1;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5-declaration-amd.js b/tests/baselines/reference/es5-declaration-amd.js
index 8d08794b7c..41ac454c6c 100644
--- a/tests/baselines/reference/es5-declaration-amd.js
+++ b/tests/baselines/reference/es5-declaration-amd.js
@@ -16,7 +16,7 @@ class A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5-souremap-amd.js b/tests/baselines/reference/es5-souremap-amd.js
index 988a5329ac..8e1ec2c799 100644
--- a/tests/baselines/reference/es5-souremap-amd.js
+++ b/tests/baselines/reference/es5-souremap-amd.js
@@ -16,7 +16,7 @@ class A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5-souremap-amd.sourcemap.txt b/tests/baselines/reference/es5-souremap-amd.sourcemap.txt
index 3166b74211..342bff7e95 100644
--- a/tests/baselines/reference/es5-souremap-amd.sourcemap.txt
+++ b/tests/baselines/reference/es5-souremap-amd.sourcemap.txt
@@ -11,7 +11,7 @@ sourceFile:es5-souremap-amd.ts
 >>>var __names = (this && this.__names) || (function() {
 >>>    var name = Object.defineProperty ? (function(proto, name) {
 >>>        Object.defineProperty(proto[name], 'name', { 
->>>            value: name, configurable: true, writable: false, enumerable: false
+>>>            value: name, configurable: true
 >>>        });
 >>>    }) : (function(proto, name) {
 >>>        proto[name].name = name;
diff --git a/tests/baselines/reference/es5-system.js b/tests/baselines/reference/es5-system.js
index 8253b2391f..31e41b38b8 100644
--- a/tests/baselines/reference/es5-system.js
+++ b/tests/baselines/reference/es5-system.js
@@ -19,7 +19,7 @@ System.register([], function (exports_1, context_1) {
     var __names = (this && this.__names) || (function() {
         var name = Object.defineProperty ? (function(proto, name) {
             Object.defineProperty(proto[name], 'name', { 
-                value: name, configurable: true, writable: false, enumerable: false
+                value: name, configurable: true
             });
         }) : (function(proto, name) {
             proto[name].name = name;
diff --git a/tests/baselines/reference/es5-umd.js b/tests/baselines/reference/es5-umd.js
index 4ab99de13c..fdf83f5b61 100644
--- a/tests/baselines/reference/es5-umd.js
+++ b/tests/baselines/reference/es5-umd.js
@@ -17,7 +17,7 @@ class A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5-umd2.js b/tests/baselines/reference/es5-umd2.js
index 491ff70fc3..c7ec4137d8 100644
--- a/tests/baselines/reference/es5-umd2.js
+++ b/tests/baselines/reference/es5-umd2.js
@@ -17,7 +17,7 @@ export class A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5-umd3.js b/tests/baselines/reference/es5-umd3.js
index 23d83f18ac..4ee23abe43 100644
--- a/tests/baselines/reference/es5-umd3.js
+++ b/tests/baselines/reference/es5-umd3.js
@@ -17,7 +17,7 @@ export default class A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5-umd4.js b/tests/baselines/reference/es5-umd4.js
index 1872dbc3b1..5e1871c6db 100644
--- a/tests/baselines/reference/es5-umd4.js
+++ b/tests/baselines/reference/es5-umd4.js
@@ -19,7 +19,7 @@ export = A;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5ExportDefaultClassDeclaration.js b/tests/baselines/reference/es5ExportDefaultClassDeclaration.js
index ff3b481740..8df260d054 100644
--- a/tests/baselines/reference/es5ExportDefaultClassDeclaration.js
+++ b/tests/baselines/reference/es5ExportDefaultClassDeclaration.js
@@ -9,7 +9,7 @@ export default class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5ExportDefaultClassDeclaration2.js b/tests/baselines/reference/es5ExportDefaultClassDeclaration2.js
index 0ad182f670..c3027509f8 100644
--- a/tests/baselines/reference/es5ExportDefaultClassDeclaration2.js
+++ b/tests/baselines/reference/es5ExportDefaultClassDeclaration2.js
@@ -9,7 +9,7 @@ export default class {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5ExportDefaultClassDeclaration3.js b/tests/baselines/reference/es5ExportDefaultClassDeclaration3.js
index 3799302bc1..73af83beea 100644
--- a/tests/baselines/reference/es5ExportDefaultClassDeclaration3.js
+++ b/tests/baselines/reference/es5ExportDefaultClassDeclaration3.js
@@ -18,7 +18,7 @@ var t: typeof C = C;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5ExportEqualsDts.js b/tests/baselines/reference/es5ExportEqualsDts.js
index 7160e9849a..34eb1e6368 100644
--- a/tests/baselines/reference/es5ExportEqualsDts.js
+++ b/tests/baselines/reference/es5ExportEqualsDts.js
@@ -17,7 +17,7 @@ export = A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5ModuleWithModuleGenAmd.js b/tests/baselines/reference/es5ModuleWithModuleGenAmd.js
index a8e01c9889..6dfe80163b 100644
--- a/tests/baselines/reference/es5ModuleWithModuleGenAmd.js
+++ b/tests/baselines/reference/es5ModuleWithModuleGenAmd.js
@@ -15,7 +15,7 @@ export class A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5ModuleWithModuleGenCommonjs.js b/tests/baselines/reference/es5ModuleWithModuleGenCommonjs.js
index c404174ff4..49d9f18593 100644
--- a/tests/baselines/reference/es5ModuleWithModuleGenCommonjs.js
+++ b/tests/baselines/reference/es5ModuleWithModuleGenCommonjs.js
@@ -16,7 +16,7 @@ export class A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5ModuleWithoutModuleGenTarget.js b/tests/baselines/reference/es5ModuleWithoutModuleGenTarget.js
index c5a273bb1a..d2278ee986 100644
--- a/tests/baselines/reference/es5ModuleWithoutModuleGenTarget.js
+++ b/tests/baselines/reference/es5ModuleWithoutModuleGenTarget.js
@@ -16,7 +16,7 @@ export class A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es5andes6module.js b/tests/baselines/reference/es5andes6module.js
index 8cc74caacc..bfcf323c05 100644
--- a/tests/baselines/reference/es5andes6module.js
+++ b/tests/baselines/reference/es5andes6module.js
@@ -17,7 +17,7 @@ export default class A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es6ClassTest.js b/tests/baselines/reference/es6ClassTest.js
index a2845ab2b7..6e306c9523 100644
--- a/tests/baselines/reference/es6ClassTest.js
+++ b/tests/baselines/reference/es6ClassTest.js
@@ -88,7 +88,7 @@ declare module AmbientMod {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es6ClassTest2.js b/tests/baselines/reference/es6ClassTest2.js
index bd2f40e2a6..a78b6edd62 100644
--- a/tests/baselines/reference/es6ClassTest2.js
+++ b/tests/baselines/reference/es6ClassTest2.js
@@ -162,7 +162,7 @@ var ccwc = new ChildClassWithoutConstructor(1, "s");
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es6ClassTest3.js b/tests/baselines/reference/es6ClassTest3.js
index de7c83e590..583f74f727 100644
--- a/tests/baselines/reference/es6ClassTest3.js
+++ b/tests/baselines/reference/es6ClassTest3.js
@@ -18,7 +18,7 @@ module M {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es6DeclOrdering.js b/tests/baselines/reference/es6DeclOrdering.js
index eb3ebce16f..e751c1b71f 100644
--- a/tests/baselines/reference/es6DeclOrdering.js
+++ b/tests/baselines/reference/es6DeclOrdering.js
@@ -20,7 +20,7 @@ class Bar {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es6MemberScoping.js b/tests/baselines/reference/es6MemberScoping.js
index 46966bf9d1..4a7c129ffa 100644
--- a/tests/baselines/reference/es6MemberScoping.js
+++ b/tests/baselines/reference/es6MemberScoping.js
@@ -19,7 +19,7 @@ class Foo2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es6modulekindWithES5Target.js b/tests/baselines/reference/es6modulekindWithES5Target.js
index 8e8ace8a71..9659130488 100644
--- a/tests/baselines/reference/es6modulekindWithES5Target.js
+++ b/tests/baselines/reference/es6modulekindWithES5Target.js
@@ -23,7 +23,7 @@ export {E};
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es6modulekindWithES5Target11.js b/tests/baselines/reference/es6modulekindWithES5Target11.js
index 7a1d590889..7f36b5bb92 100644
--- a/tests/baselines/reference/es6modulekindWithES5Target11.js
+++ b/tests/baselines/reference/es6modulekindWithES5Target11.js
@@ -12,7 +12,7 @@ export default class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es6modulekindWithES5Target2.js b/tests/baselines/reference/es6modulekindWithES5Target2.js
index bf4537a666..596202dd78 100644
--- a/tests/baselines/reference/es6modulekindWithES5Target2.js
+++ b/tests/baselines/reference/es6modulekindWithES5Target2.js
@@ -10,7 +10,7 @@ export default class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/es6modulekindWithES5Target3.js b/tests/baselines/reference/es6modulekindWithES5Target3.js
index c30069cfed..dc7fc0cb21 100644
--- a/tests/baselines/reference/es6modulekindWithES5Target3.js
+++ b/tests/baselines/reference/es6modulekindWithES5Target3.js
@@ -11,7 +11,7 @@ export default class D {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/escapedIdentifiers.js b/tests/baselines/reference/escapedIdentifiers.js
index f81e10040d..1c59e66f2a 100644
--- a/tests/baselines/reference/escapedIdentifiers.js
+++ b/tests/baselines/reference/escapedIdentifiers.js
@@ -133,7 +133,7 @@ l\u0061bel4:
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/exportPrivateType.js b/tests/baselines/reference/exportPrivateType.js
index 96ced78ac8..03d60fd3fb 100644
--- a/tests/baselines/reference/exportPrivateType.js
+++ b/tests/baselines/reference/exportPrivateType.js
@@ -34,7 +34,7 @@ var y = foo.g; // Exported variable 'y' has or is using private type 'foo.C2'.
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/expressionTypeNodeShouldError.js b/tests/baselines/reference/expressionTypeNodeShouldError.js
index c4f9180eb7..3a2465916f 100644
--- a/tests/baselines/reference/expressionTypeNodeShouldError.js
+++ b/tests/baselines/reference/expressionTypeNodeShouldError.js
@@ -51,7 +51,7 @@ type ItemType3 = true.typeof(nodes.item(0));
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -78,7 +78,7 @@ typeof (nodes.item(0));
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -105,7 +105,7 @@ typeof (nodes.item(0));
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/extendAndImplementTheSameBaseType.js b/tests/baselines/reference/extendAndImplementTheSameBaseType.js
index 1a75cec711..b4d9c04664 100644
--- a/tests/baselines/reference/extendAndImplementTheSameBaseType.js
+++ b/tests/baselines/reference/extendAndImplementTheSameBaseType.js
@@ -17,7 +17,7 @@ d.foo;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/extendAndImplementTheSameBaseType2.js b/tests/baselines/reference/extendAndImplementTheSameBaseType2.js
index eba1970df0..c1fea12763 100644
--- a/tests/baselines/reference/extendAndImplementTheSameBaseType2.js
+++ b/tests/baselines/reference/extendAndImplementTheSameBaseType2.js
@@ -20,7 +20,7 @@ var r4: number = d.bar();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/extendNonClassSymbol1.js b/tests/baselines/reference/extendNonClassSymbol1.js
index b0aee22cdf..59d70f34a0 100644
--- a/tests/baselines/reference/extendNonClassSymbol1.js
+++ b/tests/baselines/reference/extendNonClassSymbol1.js
@@ -7,7 +7,7 @@ class C extends x { } // error, could not find symbol xs
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/extendsClauseAlreadySeen.js b/tests/baselines/reference/extendsClauseAlreadySeen.js
index 3c4a9ea2b2..bd138bc6ec 100644
--- a/tests/baselines/reference/extendsClauseAlreadySeen.js
+++ b/tests/baselines/reference/extendsClauseAlreadySeen.js
@@ -20,7 +20,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/extendsClauseAlreadySeen2.js b/tests/baselines/reference/extendsClauseAlreadySeen2.js
index d5ad5ba5a9..a451cb4e10 100644
--- a/tests/baselines/reference/extendsClauseAlreadySeen2.js
+++ b/tests/baselines/reference/extendsClauseAlreadySeen2.js
@@ -20,7 +20,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/externalModuleQualification.js b/tests/baselines/reference/externalModuleQualification.js
index ca7d872918..c736e27754 100644
--- a/tests/baselines/reference/externalModuleQualification.js
+++ b/tests/baselines/reference/externalModuleQualification.js
@@ -16,7 +16,7 @@ class NavigateAction {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/fatArrowSelf.js b/tests/baselines/reference/fatArrowSelf.js
index ca49966076..e6a096e209 100644
--- a/tests/baselines/reference/fatArrowSelf.js
+++ b/tests/baselines/reference/fatArrowSelf.js
@@ -28,7 +28,7 @@ module Consumer {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/flowInFinally1.js b/tests/baselines/reference/flowInFinally1.js
index a01f5db7f5..a8040e2676 100644
--- a/tests/baselines/reference/flowInFinally1.js
+++ b/tests/baselines/reference/flowInFinally1.js
@@ -18,7 +18,7 @@ try {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/fluentClasses.js b/tests/baselines/reference/fluentClasses.js
index 72b4f8f1a4..f3dcde7aec 100644
--- a/tests/baselines/reference/fluentClasses.js
+++ b/tests/baselines/reference/fluentClasses.js
@@ -22,7 +22,7 @@ var z = c.foo().bar().baz();  // Fluent pattern
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/for-inStatements.js b/tests/baselines/reference/for-inStatements.js
index 29e87cef0a..0d9e9fe5d5 100644
--- a/tests/baselines/reference/for-inStatements.js
+++ b/tests/baselines/reference/for-inStatements.js
@@ -84,7 +84,7 @@ for (var x in Color.Blue) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/for-inStatementsInvalid.js b/tests/baselines/reference/for-inStatementsInvalid.js
index a83897717f..e23705ad28 100644
--- a/tests/baselines/reference/for-inStatementsInvalid.js
+++ b/tests/baselines/reference/for-inStatementsInvalid.js
@@ -67,7 +67,7 @@ for (var x in i[42]) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/forwardRefInClassProperties.js b/tests/baselines/reference/forwardRefInClassProperties.js
index 50e4251023..6f7ae26697 100644
--- a/tests/baselines/reference/forwardRefInClassProperties.js
+++ b/tests/baselines/reference/forwardRefInClassProperties.js
@@ -19,7 +19,7 @@ class Test
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/functionAndPropertyNameConflict.js b/tests/baselines/reference/functionAndPropertyNameConflict.js
index 707a0287fd..1176050e3a 100644
--- a/tests/baselines/reference/functionAndPropertyNameConflict.js
+++ b/tests/baselines/reference/functionAndPropertyNameConflict.js
@@ -10,7 +10,7 @@ class C65 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/functionArgShadowing.js b/tests/baselines/reference/functionArgShadowing.js
index 8c2d0caf39..13e2800685 100644
--- a/tests/baselines/reference/functionArgShadowing.js
+++ b/tests/baselines/reference/functionArgShadowing.js
@@ -18,7 +18,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/functionExpressionContextualTyping1.js b/tests/baselines/reference/functionExpressionContextualTyping1.js
index 849611a002..10d8249fd2 100644
--- a/tests/baselines/reference/functionExpressionContextualTyping1.js
+++ b/tests/baselines/reference/functionExpressionContextualTyping1.js
@@ -62,7 +62,7 @@ class C<T, U> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/functionOverloadErrors.js b/tests/baselines/reference/functionOverloadErrors.js
index f6d100d8a7..46599e909f 100644
--- a/tests/baselines/reference/functionOverloadErrors.js
+++ b/tests/baselines/reference/functionOverloadErrors.js
@@ -122,7 +122,7 @@ function initExpr() { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/functionOverloads5.js b/tests/baselines/reference/functionOverloads5.js
index 0813b01dd6..0e8283eb4f 100644
--- a/tests/baselines/reference/functionOverloads5.js
+++ b/tests/baselines/reference/functionOverloads5.js
@@ -9,7 +9,7 @@ class baz {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/functionOverloads7.js b/tests/baselines/reference/functionOverloads7.js
index 96789228b5..30df09a5ad 100644
--- a/tests/baselines/reference/functionOverloads7.js
+++ b/tests/baselines/reference/functionOverloads7.js
@@ -14,7 +14,7 @@ class foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/functionOverloadsOutOfOrder.js b/tests/baselines/reference/functionOverloadsOutOfOrder.js
index a1390f72d5..46f77660bb 100644
--- a/tests/baselines/reference/functionOverloadsOutOfOrder.js
+++ b/tests/baselines/reference/functionOverloadsOutOfOrder.js
@@ -19,7 +19,7 @@ class e {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/functionSubtypingOfVarArgs.js b/tests/baselines/reference/functionSubtypingOfVarArgs.js
index 9f6911f65f..2b9b55d20f 100644
--- a/tests/baselines/reference/functionSubtypingOfVarArgs.js
+++ b/tests/baselines/reference/functionSubtypingOfVarArgs.js
@@ -18,7 +18,7 @@ class StringEvent extends EventBase { // should work
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/functionSubtypingOfVarArgs2.js b/tests/baselines/reference/functionSubtypingOfVarArgs2.js
index e1d89699ab..b6d457d435 100644
--- a/tests/baselines/reference/functionSubtypingOfVarArgs2.js
+++ b/tests/baselines/reference/functionSubtypingOfVarArgs2.js
@@ -18,7 +18,7 @@ class StringEvent extends EventBase {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/functionWithSameNameAsField.js b/tests/baselines/reference/functionWithSameNameAsField.js
index 7a2d236d38..5511529a06 100644
--- a/tests/baselines/reference/functionWithSameNameAsField.js
+++ b/tests/baselines/reference/functionWithSameNameAsField.js
@@ -12,7 +12,7 @@ class TestProgressBar {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/functionsInClassExpressions.js b/tests/baselines/reference/functionsInClassExpressions.js
index e2340728ee..2459a7ed5c 100644
--- a/tests/baselines/reference/functionsInClassExpressions.js
+++ b/tests/baselines/reference/functionsInClassExpressions.js
@@ -14,7 +14,7 @@ let Foo = class {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/fuzzy.js b/tests/baselines/reference/fuzzy.js
index 021a6366c4..9c65496462 100644
--- a/tests/baselines/reference/fuzzy.js
+++ b/tests/baselines/reference/fuzzy.js
@@ -34,7 +34,7 @@ module M {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericArrayWithoutTypeAnnotation.js b/tests/baselines/reference/genericArrayWithoutTypeAnnotation.js
index 534052822d..a351e4ef3d 100644
--- a/tests/baselines/reference/genericArrayWithoutTypeAnnotation.js
+++ b/tests/baselines/reference/genericArrayWithoutTypeAnnotation.js
@@ -11,7 +11,7 @@ class Bar {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericAssignmentCompatWithInterfaces1.js b/tests/baselines/reference/genericAssignmentCompatWithInterfaces1.js
index ead801fa48..5afc6d51b4 100644
--- a/tests/baselines/reference/genericAssignmentCompatWithInterfaces1.js
+++ b/tests/baselines/reference/genericAssignmentCompatWithInterfaces1.js
@@ -23,7 +23,7 @@ var a4: I<string> = <K<number>>z;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericBaseClassLiteralProperty.js b/tests/baselines/reference/genericBaseClassLiteralProperty.js
index 9381c836ca..5ebc07f7a5 100644
--- a/tests/baselines/reference/genericBaseClassLiteralProperty.js
+++ b/tests/baselines/reference/genericBaseClassLiteralProperty.js
@@ -26,7 +26,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericBaseClassLiteralProperty2.js b/tests/baselines/reference/genericBaseClassLiteralProperty2.js
index ee60e740e8..a2420e56f6 100644
--- a/tests/baselines/reference/genericBaseClassLiteralProperty2.js
+++ b/tests/baselines/reference/genericBaseClassLiteralProperty2.js
@@ -29,7 +29,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericCallTypeArgumentInference.js b/tests/baselines/reference/genericCallTypeArgumentInference.js
index 9dd457b8a3..3f0cacadec 100644
--- a/tests/baselines/reference/genericCallTypeArgumentInference.js
+++ b/tests/baselines/reference/genericCallTypeArgumentInference.js
@@ -96,7 +96,7 @@ var r11 = i.foo8(); // {}
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericCallWithConstraintsTypeArgumentInference.js b/tests/baselines/reference/genericCallWithConstraintsTypeArgumentInference.js
index 46f8ae6b12..32745b06bc 100644
--- a/tests/baselines/reference/genericCallWithConstraintsTypeArgumentInference.js
+++ b/tests/baselines/reference/genericCallWithConstraintsTypeArgumentInference.js
@@ -122,7 +122,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericCallWithFixedArguments.js b/tests/baselines/reference/genericCallWithFixedArguments.js
index 9667af15fc..f8fcd24320 100644
--- a/tests/baselines/reference/genericCallWithFixedArguments.js
+++ b/tests/baselines/reference/genericCallWithFixedArguments.js
@@ -11,7 +11,7 @@ g<A, B>(7) // the parameter list is fixed, so this should not error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericCallbacksAndClassHierarchy.js b/tests/baselines/reference/genericCallbacksAndClassHierarchy.js
index f86b54dd49..69a97a39a7 100644
--- a/tests/baselines/reference/genericCallbacksAndClassHierarchy.js
+++ b/tests/baselines/reference/genericCallbacksAndClassHierarchy.js
@@ -37,7 +37,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericClassPropertyInheritanceSpecialization.js b/tests/baselines/reference/genericClassPropertyInheritanceSpecialization.js
index 39abba1d60..a81aeb6dd5 100644
--- a/tests/baselines/reference/genericClassPropertyInheritanceSpecialization.js
+++ b/tests/baselines/reference/genericClassPropertyInheritanceSpecialization.js
@@ -79,7 +79,7 @@ class ViewModel<TValue> implements Contract<TValue> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericClassWithFunctionTypedMemberArguments.js b/tests/baselines/reference/genericClassWithFunctionTypedMemberArguments.js
index 5c056f6d63..13f1cb2d1e 100644
--- a/tests/baselines/reference/genericClassWithFunctionTypedMemberArguments.js
+++ b/tests/baselines/reference/genericClassWithFunctionTypedMemberArguments.js
@@ -70,7 +70,7 @@ module WithCandidates {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericClassWithObjectTypeArgsAndConstraints.js b/tests/baselines/reference/genericClassWithObjectTypeArgsAndConstraints.js
index 09598e634d..f7a5a76cb2 100644
--- a/tests/baselines/reference/genericClassWithObjectTypeArgsAndConstraints.js
+++ b/tests/baselines/reference/genericClassWithObjectTypeArgsAndConstraints.js
@@ -66,7 +66,7 @@ module Interface {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericClassWithStaticFactory.js b/tests/baselines/reference/genericClassWithStaticFactory.js
index de507a4280..8f07588a73 100644
--- a/tests/baselines/reference/genericClassWithStaticFactory.js
+++ b/tests/baselines/reference/genericClassWithStaticFactory.js
@@ -145,7 +145,7 @@ module Editor {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericClasses4.js b/tests/baselines/reference/genericClasses4.js
index 9322f68d04..a0681b234b 100644
--- a/tests/baselines/reference/genericClasses4.js
+++ b/tests/baselines/reference/genericClasses4.js
@@ -21,7 +21,7 @@ class Vec2_T<A>
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericClassesInModule2.js b/tests/baselines/reference/genericClassesInModule2.js
index 36a0d4bcbf..54e7accc9a 100644
--- a/tests/baselines/reference/genericClassesInModule2.js
+++ b/tests/baselines/reference/genericClassesInModule2.js
@@ -24,7 +24,7 @@ export class B<T2> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericCloduleInModule.js b/tests/baselines/reference/genericCloduleInModule.js
index 3b5e5696dc..f8e45bd09b 100644
--- a/tests/baselines/reference/genericCloduleInModule.js
+++ b/tests/baselines/reference/genericCloduleInModule.js
@@ -16,7 +16,7 @@ b.foo();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericCloduleInModule2.js b/tests/baselines/reference/genericCloduleInModule2.js
index 82aa1a219f..3a6bb63f95 100644
--- a/tests/baselines/reference/genericCloduleInModule2.js
+++ b/tests/baselines/reference/genericCloduleInModule2.js
@@ -19,7 +19,7 @@ b.foo();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericCloneReturnTypes.js b/tests/baselines/reference/genericCloneReturnTypes.js
index 9f7f95df4a..aad9025f2f 100644
--- a/tests/baselines/reference/genericCloneReturnTypes.js
+++ b/tests/baselines/reference/genericCloneReturnTypes.js
@@ -29,7 +29,7 @@ b = b3;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericCloneReturnTypes2.js b/tests/baselines/reference/genericCloneReturnTypes2.js
index d07b42f116..2b6fe6373d 100644
--- a/tests/baselines/reference/genericCloneReturnTypes2.js
+++ b/tests/baselines/reference/genericCloneReturnTypes2.js
@@ -19,7 +19,7 @@ var d: MyList<number> = a.clone(); // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericConstraint1.js b/tests/baselines/reference/genericConstraint1.js
index c996cfbffd..ac79a61b88 100644
--- a/tests/baselines/reference/genericConstraint1.js
+++ b/tests/baselines/reference/genericConstraint1.js
@@ -12,7 +12,7 @@ x.bar2<string>(2, "");
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericConstraint2.js b/tests/baselines/reference/genericConstraint2.js
index 928bc58ab2..e0e93da636 100644
--- a/tests/baselines/reference/genericConstraint2.js
+++ b/tests/baselines/reference/genericConstraint2.js
@@ -25,7 +25,7 @@ var c = compare<ComparableString>(a, b);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericFunctionsWithOptionalParameters3.js b/tests/baselines/reference/genericFunctionsWithOptionalParameters3.js
index d3e38d9962..69fd3559d2 100644
--- a/tests/baselines/reference/genericFunctionsWithOptionalParameters3.js
+++ b/tests/baselines/reference/genericFunctionsWithOptionalParameters3.js
@@ -19,7 +19,7 @@ var r5 = utils.mapReduce(c, f1, f2);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericImplements.js b/tests/baselines/reference/genericImplements.js
index 811be4880a..dcd27870d9 100644
--- a/tests/baselines/reference/genericImplements.js
+++ b/tests/baselines/reference/genericImplements.js
@@ -24,7 +24,7 @@ class Z implements I {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericInstanceOf.js b/tests/baselines/reference/genericInstanceOf.js
index b8572adc8d..17b1df2059 100644
--- a/tests/baselines/reference/genericInstanceOf.js
+++ b/tests/baselines/reference/genericInstanceOf.js
@@ -15,7 +15,7 @@ class C<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericInterfaceImplementation.js b/tests/baselines/reference/genericInterfaceImplementation.js
index 60f14af278..779982ebb3 100644
--- a/tests/baselines/reference/genericInterfaceImplementation.js
+++ b/tests/baselines/reference/genericInterfaceImplementation.js
@@ -20,7 +20,7 @@ class None<T> implements IOption<T>{
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericMemberFunction.js b/tests/baselines/reference/genericMemberFunction.js
index ebc879aed2..9d768f3b80 100644
--- a/tests/baselines/reference/genericMemberFunction.js
+++ b/tests/baselines/reference/genericMemberFunction.js
@@ -26,7 +26,7 @@ export class BuildResult<A, B, C>{
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericObjectLitReturnType.js b/tests/baselines/reference/genericObjectLitReturnType.js
index e368018690..a2215841fb 100644
--- a/tests/baselines/reference/genericObjectLitReturnType.js
+++ b/tests/baselines/reference/genericObjectLitReturnType.js
@@ -15,7 +15,7 @@ t1.a = 5; // Should not error: t1 should have type {a: number}, instead has type
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericOfACloduleType1.js b/tests/baselines/reference/genericOfACloduleType1.js
index df77fbfa97..2072c5ff81 100644
--- a/tests/baselines/reference/genericOfACloduleType1.js
+++ b/tests/baselines/reference/genericOfACloduleType1.js
@@ -16,7 +16,7 @@ var g2 = new G<M.C>() // was: error Type reference cannot refer to container 'M.
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericOfACloduleType2.js b/tests/baselines/reference/genericOfACloduleType2.js
index e7e748301c..335c55c240 100644
--- a/tests/baselines/reference/genericOfACloduleType2.js
+++ b/tests/baselines/reference/genericOfACloduleType2.js
@@ -19,7 +19,7 @@ module N {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericPrototypeProperty.js b/tests/baselines/reference/genericPrototypeProperty.js
index 0b02c6a439..f9246ea76b 100644
--- a/tests/baselines/reference/genericPrototypeProperty.js
+++ b/tests/baselines/reference/genericPrototypeProperty.js
@@ -13,7 +13,7 @@ var r3 = r.foo(null);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericRecursiveImplicitConstructorErrors2.js b/tests/baselines/reference/genericRecursiveImplicitConstructorErrors2.js
index 570bbf372a..0b358e71c1 100644
--- a/tests/baselines/reference/genericRecursiveImplicitConstructorErrors2.js
+++ b/tests/baselines/reference/genericRecursiveImplicitConstructorErrors2.js
@@ -30,7 +30,7 @@ module TypeScript2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericRecursiveImplicitConstructorErrors3.js b/tests/baselines/reference/genericRecursiveImplicitConstructorErrors3.js
index 66cf3dd3d3..6f7082d629 100644
--- a/tests/baselines/reference/genericRecursiveImplicitConstructorErrors3.js
+++ b/tests/baselines/reference/genericRecursiveImplicitConstructorErrors3.js
@@ -44,7 +44,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericReversingTypeParameters.js b/tests/baselines/reference/genericReversingTypeParameters.js
index 64a2360afe..3fd8b52805 100644
--- a/tests/baselines/reference/genericReversingTypeParameters.js
+++ b/tests/baselines/reference/genericReversingTypeParameters.js
@@ -14,7 +14,7 @@ var r2b = i.get(1);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericReversingTypeParameters2.js b/tests/baselines/reference/genericReversingTypeParameters2.js
index 70e3efd024..fa0d824870 100644
--- a/tests/baselines/reference/genericReversingTypeParameters2.js
+++ b/tests/baselines/reference/genericReversingTypeParameters2.js
@@ -13,7 +13,7 @@ var r2b = i.get(1);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericSpecializations1.js b/tests/baselines/reference/genericSpecializations1.js
index 96e2642871..6120114af0 100644
--- a/tests/baselines/reference/genericSpecializations1.js
+++ b/tests/baselines/reference/genericSpecializations1.js
@@ -19,7 +19,7 @@ class StringFoo3 implements IFoo<string> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericSpecializations2.js b/tests/baselines/reference/genericSpecializations2.js
index 73bfe79e0d..e8916ca7c8 100644
--- a/tests/baselines/reference/genericSpecializations2.js
+++ b/tests/baselines/reference/genericSpecializations2.js
@@ -23,7 +23,7 @@ class StringFoo3 implements IFoo<string> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericSpecializations3.js b/tests/baselines/reference/genericSpecializations3.js
index 1c3ce72cc7..bd817d0630 100644
--- a/tests/baselines/reference/genericSpecializations3.js
+++ b/tests/baselines/reference/genericSpecializations3.js
@@ -39,7 +39,7 @@ var stringFoo3: StringFoo3;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericTypeAssertions1.js b/tests/baselines/reference/genericTypeAssertions1.js
index dc62289a75..6518490c41 100644
--- a/tests/baselines/reference/genericTypeAssertions1.js
+++ b/tests/baselines/reference/genericTypeAssertions1.js
@@ -8,7 +8,7 @@ var r2: A<number> = <A<A<number>>>foo; // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericTypeAssertions2.js b/tests/baselines/reference/genericTypeAssertions2.js
index b4a489e8c6..851a75cbc4 100644
--- a/tests/baselines/reference/genericTypeAssertions2.js
+++ b/tests/baselines/reference/genericTypeAssertions2.js
@@ -17,7 +17,7 @@ var r5: A<number> = <A<number>>[]; // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericTypeAssertions4.js b/tests/baselines/reference/genericTypeAssertions4.js
index 783ee453c5..3340454939 100644
--- a/tests/baselines/reference/genericTypeAssertions4.js
+++ b/tests/baselines/reference/genericTypeAssertions4.js
@@ -29,7 +29,7 @@ function foo2<T extends A>(x: T) {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericTypeAssertions6.js b/tests/baselines/reference/genericTypeAssertions6.js
index a64f84c8be..e397ebdefc 100644
--- a/tests/baselines/reference/genericTypeAssertions6.js
+++ b/tests/baselines/reference/genericTypeAssertions6.js
@@ -28,7 +28,7 @@ var c: A<Date, Date> = <A<Date, Date>>b;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericTypeConstraints.js b/tests/baselines/reference/genericTypeConstraints.js
index c2079ba9d0..b57f58a279 100644
--- a/tests/baselines/reference/genericTypeConstraints.js
+++ b/tests/baselines/reference/genericTypeConstraints.js
@@ -17,7 +17,7 @@ class BarExtended extends Bar<FooExtended> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericTypeReferencesRequireTypeArgs.js b/tests/baselines/reference/genericTypeReferencesRequireTypeArgs.js
index 00c626cbe0..67963a1117 100644
--- a/tests/baselines/reference/genericTypeReferencesRequireTypeArgs.js
+++ b/tests/baselines/reference/genericTypeReferencesRequireTypeArgs.js
@@ -15,7 +15,7 @@ var i2: I<C>; // should be an error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericTypeWithCallableMembers.js b/tests/baselines/reference/genericTypeWithCallableMembers.js
index b9a2b4633e..3086202b09 100644
--- a/tests/baselines/reference/genericTypeWithCallableMembers.js
+++ b/tests/baselines/reference/genericTypeWithCallableMembers.js
@@ -16,7 +16,7 @@ class C<T extends Constructable> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericTypeWithNonGenericBaseMisMatch.js b/tests/baselines/reference/genericTypeWithNonGenericBaseMisMatch.js
index 4ddbbf64f0..7bfd850a86 100644
--- a/tests/baselines/reference/genericTypeWithNonGenericBaseMisMatch.js
+++ b/tests/baselines/reference/genericTypeWithNonGenericBaseMisMatch.js
@@ -13,7 +13,7 @@ var i: I = x; // Should not be allowed -- type of 'f' is incompatible with 'I'
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericWithCallSignatures1.js b/tests/baselines/reference/genericWithCallSignatures1.js
index 129c67f4f1..4e824922a8 100644
--- a/tests/baselines/reference/genericWithCallSignatures1.js
+++ b/tests/baselines/reference/genericWithCallSignatures1.js
@@ -23,7 +23,7 @@ class MyClass {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericWithIndexerOfTypeParameterType1.js b/tests/baselines/reference/genericWithIndexerOfTypeParameterType1.js
index dd1ca4bba5..b98b03143f 100644
--- a/tests/baselines/reference/genericWithIndexerOfTypeParameterType1.js
+++ b/tests/baselines/reference/genericWithIndexerOfTypeParameterType1.js
@@ -12,7 +12,7 @@ var value: string = lazyArray.array()["test"]; // used to be an error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericWithIndexerOfTypeParameterType2.js b/tests/baselines/reference/genericWithIndexerOfTypeParameterType2.js
index 0c56f496e6..840eb551f2 100644
--- a/tests/baselines/reference/genericWithIndexerOfTypeParameterType2.js
+++ b/tests/baselines/reference/genericWithIndexerOfTypeParameterType2.js
@@ -28,7 +28,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericWithOpenTypeParameters1.js b/tests/baselines/reference/genericWithOpenTypeParameters1.js
index a6e656349a..314ce52b76 100644
--- a/tests/baselines/reference/genericWithOpenTypeParameters1.js
+++ b/tests/baselines/reference/genericWithOpenTypeParameters1.js
@@ -15,7 +15,7 @@ var f4 = (x: B<number>) => { return x.foo(1); } // no error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericsWithDuplicateTypeParameters1.js b/tests/baselines/reference/genericsWithDuplicateTypeParameters1.js
index c860a22889..dd8fd28b9b 100644
--- a/tests/baselines/reference/genericsWithDuplicateTypeParameters1.js
+++ b/tests/baselines/reference/genericsWithDuplicateTypeParameters1.js
@@ -20,7 +20,7 @@ var m = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/genericsWithoutTypeParameters1.js b/tests/baselines/reference/genericsWithoutTypeParameters1.js
index ffc23aca68..d7cbc04343 100644
--- a/tests/baselines/reference/genericsWithoutTypeParameters1.js
+++ b/tests/baselines/reference/genericsWithoutTypeParameters1.js
@@ -37,7 +37,7 @@ function f<T>(x: T): A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/getAndSetAsMemberNames.js b/tests/baselines/reference/getAndSetAsMemberNames.js
index 7d04d2b766..3e1b907e20 100644
--- a/tests/baselines/reference/getAndSetAsMemberNames.js
+++ b/tests/baselines/reference/getAndSetAsMemberNames.js
@@ -25,7 +25,7 @@ class C5 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/getterControlFlowStrictNull.js b/tests/baselines/reference/getterControlFlowStrictNull.js
index b752ea5df4..5919143c80 100644
--- a/tests/baselines/reference/getterControlFlowStrictNull.js
+++ b/tests/baselines/reference/getterControlFlowStrictNull.js
@@ -22,7 +22,7 @@ class B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/getterThatThrowsShouldNotNeedReturn.js b/tests/baselines/reference/getterThatThrowsShouldNotNeedReturn.js
index aa92a19c81..46e7fe943d 100644
--- a/tests/baselines/reference/getterThatThrowsShouldNotNeedReturn.js
+++ b/tests/baselines/reference/getterThatThrowsShouldNotNeedReturn.js
@@ -13,7 +13,7 @@ class Greeter {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/giant.js b/tests/baselines/reference/giant.js
index 94535444c7..650744110e 100644
--- a/tests/baselines/reference/giant.js
+++ b/tests/baselines/reference/giant.js
@@ -684,7 +684,7 @@ export declare module eaM {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/grammarAmbiguities1.js b/tests/baselines/reference/grammarAmbiguities1.js
index 338f5f5d86..7372bd6fba 100644
--- a/tests/baselines/reference/grammarAmbiguities1.js
+++ b/tests/baselines/reference/grammarAmbiguities1.js
@@ -14,7 +14,7 @@ f(g < A, B > +(7));
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/heterogeneousArrayAndOverloads.js b/tests/baselines/reference/heterogeneousArrayAndOverloads.js
index 6e0630735a..f2eed93392 100644
--- a/tests/baselines/reference/heterogeneousArrayAndOverloads.js
+++ b/tests/baselines/reference/heterogeneousArrayAndOverloads.js
@@ -15,7 +15,7 @@ class arrTest {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/implementGenericWithMismatchedTypes.js b/tests/baselines/reference/implementGenericWithMismatchedTypes.js
index b83d66f634..ca435020e2 100644
--- a/tests/baselines/reference/implementGenericWithMismatchedTypes.js
+++ b/tests/baselines/reference/implementGenericWithMismatchedTypes.js
@@ -26,7 +26,7 @@ class C2<T> implements IFoo2<T> { // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/implementInterfaceAnyMemberWithVoid.js b/tests/baselines/reference/implementInterfaceAnyMemberWithVoid.js
index 2cdd7fc51b..57e8be8d6a 100644
--- a/tests/baselines/reference/implementInterfaceAnyMemberWithVoid.js
+++ b/tests/baselines/reference/implementInterfaceAnyMemberWithVoid.js
@@ -13,7 +13,7 @@ class Bug implements I {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/implementsClauseAlreadySeen.js b/tests/baselines/reference/implementsClauseAlreadySeen.js
index 9140fcf662..ced4663a5e 100644
--- a/tests/baselines/reference/implementsClauseAlreadySeen.js
+++ b/tests/baselines/reference/implementsClauseAlreadySeen.js
@@ -10,7 +10,7 @@ class D implements C implements C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/implementsInClassExpression.js b/tests/baselines/reference/implementsInClassExpression.js
index 394cdd9d66..ff164297f3 100644
--- a/tests/baselines/reference/implementsInClassExpression.js
+++ b/tests/baselines/reference/implementsInClassExpression.js
@@ -11,7 +11,7 @@ let cls = class implements Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/implicitAnyAnyReturningFunction.js b/tests/baselines/reference/implicitAnyAnyReturningFunction.js
index 36c224daea..6aac39f901 100644
--- a/tests/baselines/reference/implicitAnyAnyReturningFunction.js
+++ b/tests/baselines/reference/implicitAnyAnyReturningFunction.js
@@ -24,7 +24,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/implicitAnyCastedValue.js b/tests/baselines/reference/implicitAnyCastedValue.js
index d7041ebbe9..38d27ad78d 100644
--- a/tests/baselines/reference/implicitAnyCastedValue.js
+++ b/tests/baselines/reference/implicitAnyCastedValue.js
@@ -82,7 +82,7 @@ var array = <any>[null, undefined];
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/implicitAnyDeclareMemberWithoutType2.js b/tests/baselines/reference/implicitAnyDeclareMemberWithoutType2.js
index bcc503007f..8eff83776f 100644
--- a/tests/baselines/reference/implicitAnyDeclareMemberWithoutType2.js
+++ b/tests/baselines/reference/implicitAnyDeclareMemberWithoutType2.js
@@ -13,7 +13,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/implicitAnyFunctionReturnNullOrUndefined.js b/tests/baselines/reference/implicitAnyFunctionReturnNullOrUndefined.js
index e568656653..0ee559310a 100644
--- a/tests/baselines/reference/implicitAnyFunctionReturnNullOrUndefined.js
+++ b/tests/baselines/reference/implicitAnyFunctionReturnNullOrUndefined.js
@@ -28,7 +28,7 @@ undefinedWidenFunction();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/implicitAnyInCatch.js b/tests/baselines/reference/implicitAnyInCatch.js
index 108ddbc0c5..b6d2b8f2a3 100644
--- a/tests/baselines/reference/implicitAnyInCatch.js
+++ b/tests/baselines/reference/implicitAnyInCatch.js
@@ -18,7 +18,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importAndVariableDeclarationConflict2.js b/tests/baselines/reference/importAndVariableDeclarationConflict2.js
index ef509edde8..7738fe29fd 100644
--- a/tests/baselines/reference/importAndVariableDeclarationConflict2.js
+++ b/tests/baselines/reference/importAndVariableDeclarationConflict2.js
@@ -15,7 +15,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importAsBaseClass.js b/tests/baselines/reference/importAsBaseClass.js
index 1ee5c4b339..7db2a03754 100644
--- a/tests/baselines/reference/importAsBaseClass.js
+++ b/tests/baselines/reference/importAsBaseClass.js
@@ -15,7 +15,7 @@ class Hello extends Greeter { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importCallExpressionAsyncES3AMD.js b/tests/baselines/reference/importCallExpressionAsyncES3AMD.js
index 5d24857a90..d967f36bfa 100644
--- a/tests/baselines/reference/importCallExpressionAsyncES3AMD.js
+++ b/tests/baselines/reference/importCallExpressionAsyncES3AMD.js
@@ -32,7 +32,7 @@ export const l = async () => {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importCallExpressionAsyncES3CJS.js b/tests/baselines/reference/importCallExpressionAsyncES3CJS.js
index 2713fd6eb5..79ebcc9b8a 100644
--- a/tests/baselines/reference/importCallExpressionAsyncES3CJS.js
+++ b/tests/baselines/reference/importCallExpressionAsyncES3CJS.js
@@ -33,7 +33,7 @@ export const l = async () => {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importCallExpressionAsyncES3System.js b/tests/baselines/reference/importCallExpressionAsyncES3System.js
index 76601c5dbd..25753c557a 100644
--- a/tests/baselines/reference/importCallExpressionAsyncES3System.js
+++ b/tests/baselines/reference/importCallExpressionAsyncES3System.js
@@ -34,7 +34,7 @@ System.register([], function (exports_1, context_1) {
     var __names = (this && this.__names) || (function() {
         var name = Object.defineProperty ? (function(proto, name) {
             Object.defineProperty(proto[name], 'name', { 
-                value: name, configurable: true, writable: false, enumerable: false
+                value: name, configurable: true
             });
         }) : (function(proto, name) {
             proto[name].name = name;
diff --git a/tests/baselines/reference/importCallExpressionAsyncES3UMD.js b/tests/baselines/reference/importCallExpressionAsyncES3UMD.js
index e02be9b98b..57a7364659 100644
--- a/tests/baselines/reference/importCallExpressionAsyncES3UMD.js
+++ b/tests/baselines/reference/importCallExpressionAsyncES3UMD.js
@@ -32,7 +32,7 @@ export const l = async () => {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importCallExpressionAsyncES5AMD.js b/tests/baselines/reference/importCallExpressionAsyncES5AMD.js
index 3b91349248..a60bc91b9b 100644
--- a/tests/baselines/reference/importCallExpressionAsyncES5AMD.js
+++ b/tests/baselines/reference/importCallExpressionAsyncES5AMD.js
@@ -32,7 +32,7 @@ export const l = async () => {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importCallExpressionAsyncES5CJS.js b/tests/baselines/reference/importCallExpressionAsyncES5CJS.js
index fe1dcb55d6..b1002bc922 100644
--- a/tests/baselines/reference/importCallExpressionAsyncES5CJS.js
+++ b/tests/baselines/reference/importCallExpressionAsyncES5CJS.js
@@ -33,7 +33,7 @@ export const l = async () => {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importCallExpressionAsyncES5System.js b/tests/baselines/reference/importCallExpressionAsyncES5System.js
index b7d79d0335..b3c802c2e4 100644
--- a/tests/baselines/reference/importCallExpressionAsyncES5System.js
+++ b/tests/baselines/reference/importCallExpressionAsyncES5System.js
@@ -34,7 +34,7 @@ System.register([], function (exports_1, context_1) {
     var __names = (this && this.__names) || (function() {
         var name = Object.defineProperty ? (function(proto, name) {
             Object.defineProperty(proto[name], 'name', { 
-                value: name, configurable: true, writable: false, enumerable: false
+                value: name, configurable: true
             });
         }) : (function(proto, name) {
             proto[name].name = name;
diff --git a/tests/baselines/reference/importCallExpressionAsyncES5UMD.js b/tests/baselines/reference/importCallExpressionAsyncES5UMD.js
index 8dc8d47e93..6259e42f9f 100644
--- a/tests/baselines/reference/importCallExpressionAsyncES5UMD.js
+++ b/tests/baselines/reference/importCallExpressionAsyncES5UMD.js
@@ -32,7 +32,7 @@ export const l = async () => {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importCallExpressionES5AMD.js b/tests/baselines/reference/importCallExpressionES5AMD.js
index fb3ffc29e6..31b2f7d084 100644
--- a/tests/baselines/reference/importCallExpressionES5AMD.js
+++ b/tests/baselines/reference/importCallExpressionES5AMD.js
@@ -39,7 +39,7 @@ define(["require", "exports"], function (require, exports) {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importCallExpressionES5CJS.js b/tests/baselines/reference/importCallExpressionES5CJS.js
index f0efc3bb98..fc0365d900 100644
--- a/tests/baselines/reference/importCallExpressionES5CJS.js
+++ b/tests/baselines/reference/importCallExpressionES5CJS.js
@@ -38,7 +38,7 @@ exports.foo = foo;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importCallExpressionES5System.js b/tests/baselines/reference/importCallExpressionES5System.js
index e54c182356..2842299239 100644
--- a/tests/baselines/reference/importCallExpressionES5System.js
+++ b/tests/baselines/reference/importCallExpressionES5System.js
@@ -46,7 +46,7 @@ System.register([], function (exports_1, context_1) {
     var __names = (this && this.__names) || (function() {
         var name = Object.defineProperty ? (function(proto, name) {
             Object.defineProperty(proto[name], 'name', { 
-                value: name, configurable: true, writable: false, enumerable: false
+                value: name, configurable: true
             });
         }) : (function(proto, name) {
             proto[name].name = name;
diff --git a/tests/baselines/reference/importCallExpressionES5UMD.js b/tests/baselines/reference/importCallExpressionES5UMD.js
index 124ceae6cf..7c3fa6283a 100644
--- a/tests/baselines/reference/importCallExpressionES5UMD.js
+++ b/tests/baselines/reference/importCallExpressionES5UMD.js
@@ -47,7 +47,7 @@ export class D {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importCallExpressionNoModuleKindSpecified.js b/tests/baselines/reference/importCallExpressionNoModuleKindSpecified.js
index 2ed528c9b6..2173bdecab 100644
--- a/tests/baselines/reference/importCallExpressionNoModuleKindSpecified.js
+++ b/tests/baselines/reference/importCallExpressionNoModuleKindSpecified.js
@@ -31,7 +31,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -62,7 +62,7 @@ exports.backup = backup;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importHelpers.js b/tests/baselines/reference/importHelpers.js
index e3eb19bd48..57d199a464 100644
--- a/tests/baselines/reference/importHelpers.js
+++ b/tests/baselines/reference/importHelpers.js
@@ -82,7 +82,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importHelpersNoHelpers.js b/tests/baselines/reference/importHelpersNoHelpers.js
index e791e2670d..2d9da15feb 100644
--- a/tests/baselines/reference/importHelpersNoHelpers.js
+++ b/tests/baselines/reference/importHelpersNoHelpers.js
@@ -93,7 +93,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importHelpersNoModule.js b/tests/baselines/reference/importHelpersNoModule.js
index 8206569c95..7050dfdada 100644
--- a/tests/baselines/reference/importHelpersNoModule.js
+++ b/tests/baselines/reference/importHelpersNoModule.js
@@ -74,7 +74,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/import_reference-exported-alias.js b/tests/baselines/reference/import_reference-exported-alias.js
index d9960f7a4b..4ced231b49 100644
--- a/tests/baselines/reference/import_reference-exported-alias.js
+++ b/tests/baselines/reference/import_reference-exported-alias.js
@@ -25,7 +25,7 @@ var x = new UserServices().getUserName();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/import_reference-to-type-alias.js b/tests/baselines/reference/import_reference-to-type-alias.js
index 78ff1c1742..f4d5456d05 100644
--- a/tests/baselines/reference/import_reference-to-type-alias.js
+++ b/tests/baselines/reference/import_reference-to-type-alias.js
@@ -21,7 +21,7 @@ var x = new Services.UserServices().getUserName();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/importedAliasesInTypePositions.js b/tests/baselines/reference/importedAliasesInTypePositions.js
index 6e6db56773..eea9594d31 100644
--- a/tests/baselines/reference/importedAliasesInTypePositions.js
+++ b/tests/baselines/reference/importedAliasesInTypePositions.js
@@ -22,7 +22,7 @@ export module ImportingModule {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inOperatorWithGeneric.js b/tests/baselines/reference/inOperatorWithGeneric.js
index d06b2bcda9..6fa222f789 100644
--- a/tests/baselines/reference/inOperatorWithGeneric.js
+++ b/tests/baselines/reference/inOperatorWithGeneric.js
@@ -10,7 +10,7 @@ class C<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/incompatibleAssignmentOfIdenticallyNamedTypes.js b/tests/baselines/reference/incompatibleAssignmentOfIdenticallyNamedTypes.js
index aba26303e1..3d232893b7 100644
--- a/tests/baselines/reference/incompatibleAssignmentOfIdenticallyNamedTypes.js
+++ b/tests/baselines/reference/incompatibleAssignmentOfIdenticallyNamedTypes.js
@@ -13,7 +13,7 @@ class Foo<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/incompatibleTypes.js b/tests/baselines/reference/incompatibleTypes.js
index 0d62a50d42..e26b1e8b0a 100644
--- a/tests/baselines/reference/incompatibleTypes.js
+++ b/tests/baselines/reference/incompatibleTypes.js
@@ -79,7 +79,7 @@ var fp1: () =>any = a => 0;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/incrementOnTypeParameter.js b/tests/baselines/reference/incrementOnTypeParameter.js
index 4d29b1ea33..09ea218502 100644
--- a/tests/baselines/reference/incrementOnTypeParameter.js
+++ b/tests/baselines/reference/incrementOnTypeParameter.js
@@ -13,7 +13,7 @@ class C<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/indexTypeCheck.js b/tests/baselines/reference/indexTypeCheck.js
index 0f07864d33..875000849b 100644
--- a/tests/baselines/reference/indexTypeCheck.js
+++ b/tests/baselines/reference/indexTypeCheck.js
@@ -67,7 +67,7 @@ class Benchmark {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/indexedAccessRelation.js b/tests/baselines/reference/indexedAccessRelation.js
index a83dfec161..b6c7f3b01a 100644
--- a/tests/baselines/reference/indexedAccessRelation.js
+++ b/tests/baselines/reference/indexedAccessRelation.js
@@ -25,7 +25,7 @@ class Comp<T extends Foo, S> extends Component<S & State<T>>
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/indexedAccessTypeConstraints.js b/tests/baselines/reference/indexedAccessTypeConstraints.js
index 8f1123fca3..71544c5d98 100644
--- a/tests/baselines/reference/indexedAccessTypeConstraints.js
+++ b/tests/baselines/reference/indexedAccessTypeConstraints.js
@@ -41,7 +41,7 @@ function foo<C, T extends { content: C }>(x: C, y: T['content']) {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/indexerReturningTypeParameter1.js b/tests/baselines/reference/indexerReturningTypeParameter1.js
index 0118a43917..7b5b1ecb06 100644
--- a/tests/baselines/reference/indexerReturningTypeParameter1.js
+++ b/tests/baselines/reference/indexerReturningTypeParameter1.js
@@ -17,7 +17,7 @@ var r2 = a2.groupBy();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/indexersInClassType.js b/tests/baselines/reference/indexersInClassType.js
index 26d10a88a8..2616261c32 100644
--- a/tests/baselines/reference/indexersInClassType.js
+++ b/tests/baselines/reference/indexersInClassType.js
@@ -21,7 +21,7 @@ var r3 = r.a
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inferFromGenericFunctionReturnTypes1.js b/tests/baselines/reference/inferFromGenericFunctionReturnTypes1.js
index 0254e63ab6..41ebece978 100644
--- a/tests/baselines/reference/inferFromGenericFunctionReturnTypes1.js
+++ b/tests/baselines/reference/inferFromGenericFunctionReturnTypes1.js
@@ -76,7 +76,7 @@ testSet.transform(
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inferFromGenericFunctionReturnTypes2.js b/tests/baselines/reference/inferFromGenericFunctionReturnTypes2.js
index 697965123c..37c2ad7777 100644
--- a/tests/baselines/reference/inferFromGenericFunctionReturnTypes2.js
+++ b/tests/baselines/reference/inferFromGenericFunctionReturnTypes2.js
@@ -99,7 +99,7 @@ const t2 = testSet.transform(
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inferParameterWithMethodCallInitializer.js b/tests/baselines/reference/inferParameterWithMethodCallInitializer.js
index 8bbb7c9ee0..ce6aed1e24 100644
--- a/tests/baselines/reference/inferParameterWithMethodCallInitializer.js
+++ b/tests/baselines/reference/inferParameterWithMethodCallInitializer.js
@@ -24,7 +24,7 @@ class Weird {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inferentialTypingUsingApparentType3.js b/tests/baselines/reference/inferentialTypingUsingApparentType3.js
index 3d5863da48..1a67c9c89c 100644
--- a/tests/baselines/reference/inferentialTypingUsingApparentType3.js
+++ b/tests/baselines/reference/inferentialTypingUsingApparentType3.js
@@ -30,7 +30,7 @@ person.fields.id;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inferringClassMembersFromAssignments.js b/tests/baselines/reference/inferringClassMembersFromAssignments.js
index e2dd0ec5d6..0fd7221045 100644
--- a/tests/baselines/reference/inferringClassMembersFromAssignments.js
+++ b/tests/baselines/reference/inferringClassMembersFromAssignments.js
@@ -127,7 +127,7 @@ var stringOrNumberOrUndefined = C.inStaticNestedArrowFunction;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inheritance.js b/tests/baselines/reference/inheritance.js
index c85f3d77f5..9af29ac523 100644
--- a/tests/baselines/reference/inheritance.js
+++ b/tests/baselines/reference/inheritance.js
@@ -48,7 +48,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inheritance1.js b/tests/baselines/reference/inheritance1.js
index 6c9c479d38..26f0ba2b85 100644
--- a/tests/baselines/reference/inheritance1.js
+++ b/tests/baselines/reference/inheritance1.js
@@ -75,7 +75,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inheritanceGrandParentPrivateMemberCollision.js b/tests/baselines/reference/inheritanceGrandParentPrivateMemberCollision.js
index 7bd14f8adb..4936643f2b 100644
--- a/tests/baselines/reference/inheritanceGrandParentPrivateMemberCollision.js
+++ b/tests/baselines/reference/inheritanceGrandParentPrivateMemberCollision.js
@@ -14,7 +14,7 @@ class C extends B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inheritanceGrandParentPrivateMemberCollisionWithPublicMember.js b/tests/baselines/reference/inheritanceGrandParentPrivateMemberCollisionWithPublicMember.js
index 9e0a47e12a..b98a3e0c63 100644
--- a/tests/baselines/reference/inheritanceGrandParentPrivateMemberCollisionWithPublicMember.js
+++ b/tests/baselines/reference/inheritanceGrandParentPrivateMemberCollisionWithPublicMember.js
@@ -14,7 +14,7 @@ class C extends B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inheritanceGrandParentPublicMemberCollisionWithPrivateMember.js b/tests/baselines/reference/inheritanceGrandParentPublicMemberCollisionWithPrivateMember.js
index 143a44aeda..c7e7c55538 100644
--- a/tests/baselines/reference/inheritanceGrandParentPublicMemberCollisionWithPrivateMember.js
+++ b/tests/baselines/reference/inheritanceGrandParentPublicMemberCollisionWithPrivateMember.js
@@ -14,7 +14,7 @@ class C extends B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inheritanceMemberAccessorOverridingMethod.js b/tests/baselines/reference/inheritanceMemberAccessorOverridingMethod.js
index 6e69db49c2..aac8d7d378 100644
--- a/tests/baselines/reference/inheritanceMemberAccessorOverridingMethod.js
+++ b/tests/baselines/reference/inheritanceMemberAccessorOverridingMethod.js
@@ -18,7 +18,7 @@ class b extends a {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inheritanceMemberFuncOverridingAccessor.js b/tests/baselines/reference/inheritanceMemberFuncOverridingAccessor.js
index 9a6406f0fa..c32a5e61d5 100644
--- a/tests/baselines/reference/inheritanceMemberFuncOverridingAccessor.js
+++ b/tests/baselines/reference/inheritanceMemberFuncOverridingAccessor.js
@@ -28,7 +28,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inheritanceMemberFuncOverridingMethod.js b/tests/baselines/reference/inheritanceMemberFuncOverridingMethod.js
index 8f8053a409..d0cef81020 100644
--- a/tests/baselines/reference/inheritanceMemberFuncOverridingMethod.js
+++ b/tests/baselines/reference/inheritanceMemberFuncOverridingMethod.js
@@ -15,7 +15,7 @@ class b extends a {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inheritanceMemberFuncOverridingProperty.js b/tests/baselines/reference/inheritanceMemberFuncOverridingProperty.js
index cd33c1c8f8..9473bfdfa3 100644
--- a/tests/baselines/reference/inheritanceMemberFuncOverridingProperty.js
+++ b/tests/baselines/reference/inheritanceMemberFuncOverridingProperty.js
@@ -23,7 +23,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/inheritanceMemberPropertyOverridingMethod.js b/tests/baselines/reference/inheritanceMemberPropertyOverridingMethod.js
index de55945632..80b7deae0a 100644
--- a/tests/baselines/reference/inheritanceMemberPropertyOverridingMethod.js
+++ b/tests/baselines/reference/inheritanceMemberPropertyOverridingMethod.js
@@ -13,7 +13,7 @@ class b extends a {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/innerAliases2.js b/tests/baselines/reference/innerAliases2.js
index 8ca8d8cbf3..4a0848338f 100644
--- a/tests/baselines/reference/innerAliases2.js
+++ b/tests/baselines/reference/innerAliases2.js
@@ -23,7 +23,7 @@ module consumer {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/innerTypeParameterShadowingOuterOne2.js b/tests/baselines/reference/innerTypeParameterShadowingOuterOne2.js
index 1861ed2c19..a9e54e43bd 100644
--- a/tests/baselines/reference/innerTypeParameterShadowingOuterOne2.js
+++ b/tests/baselines/reference/innerTypeParameterShadowingOuterOne2.js
@@ -43,7 +43,7 @@ class C2<T extends Date, U extends Date> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/instanceAndStaticDeclarations1.js b/tests/baselines/reference/instanceAndStaticDeclarations1.js
index 9e15065516..9cecfe9c54 100644
--- a/tests/baselines/reference/instanceAndStaticDeclarations1.js
+++ b/tests/baselines/reference/instanceAndStaticDeclarations1.js
@@ -17,7 +17,7 @@ class Point {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/instanceMemberAssignsToClassPrototype.js b/tests/baselines/reference/instanceMemberAssignsToClassPrototype.js
index 822d838a74..86469d1232 100644
--- a/tests/baselines/reference/instanceMemberAssignsToClassPrototype.js
+++ b/tests/baselines/reference/instanceMemberAssignsToClassPrototype.js
@@ -16,7 +16,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/instancePropertiesInheritedIntoClassType.js b/tests/baselines/reference/instancePropertiesInheritedIntoClassType.js
index 5927555f38..c2461c84b1 100644
--- a/tests/baselines/reference/instancePropertiesInheritedIntoClassType.js
+++ b/tests/baselines/reference/instancePropertiesInheritedIntoClassType.js
@@ -46,7 +46,7 @@ module Generic {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/instancePropertyInClassType.js b/tests/baselines/reference/instancePropertyInClassType.js
index 56b1b7c9e3..54813ca047 100644
--- a/tests/baselines/reference/instancePropertyInClassType.js
+++ b/tests/baselines/reference/instancePropertyInClassType.js
@@ -42,7 +42,7 @@ module Generic {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/instanceofOperatorWithInvalidOperands.js b/tests/baselines/reference/instanceofOperatorWithInvalidOperands.js
index 4155be5c42..3b71d01f78 100644
--- a/tests/baselines/reference/instanceofOperatorWithInvalidOperands.js
+++ b/tests/baselines/reference/instanceofOperatorWithInvalidOperands.js
@@ -50,7 +50,7 @@ var rc1 = '' instanceof {};
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/instantiatedBaseTypeConstraints.js b/tests/baselines/reference/instantiatedBaseTypeConstraints.js
index ff591f8655..b67879dea0 100644
--- a/tests/baselines/reference/instantiatedBaseTypeConstraints.js
+++ b/tests/baselines/reference/instantiatedBaseTypeConstraints.js
@@ -15,7 +15,7 @@ class Bar implements Foo<Bar, string> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/instantiatedReturnTypeContravariance.js b/tests/baselines/reference/instantiatedReturnTypeContravariance.js
index 9456ecbbeb..e33ea7dceb 100644
--- a/tests/baselines/reference/instantiatedReturnTypeContravariance.js
+++ b/tests/baselines/reference/instantiatedReturnTypeContravariance.js
@@ -34,7 +34,7 @@ return null;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/intTypeCheck.js b/tests/baselines/reference/intTypeCheck.js
index fbb4efd91a..039f778805 100644
--- a/tests/baselines/reference/intTypeCheck.js
+++ b/tests/baselines/reference/intTypeCheck.js
@@ -209,7 +209,7 @@ var obj87: i8 = new {};
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/interfaceClassMerging.js b/tests/baselines/reference/interfaceClassMerging.js
index 5de7ab16ba..b338af4c06 100644
--- a/tests/baselines/reference/interfaceClassMerging.js
+++ b/tests/baselines/reference/interfaceClassMerging.js
@@ -44,7 +44,7 @@ obj = bar;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/interfaceClassMerging2.js b/tests/baselines/reference/interfaceClassMerging2.js
index f947247f7b..977cfafb3e 100644
--- a/tests/baselines/reference/interfaceClassMerging2.js
+++ b/tests/baselines/reference/interfaceClassMerging2.js
@@ -40,7 +40,7 @@ foo = bar;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/interfaceContextualType.js b/tests/baselines/reference/interfaceContextualType.js
index 67d255dcdc..eb5265de0b 100644
--- a/tests/baselines/reference/interfaceContextualType.js
+++ b/tests/baselines/reference/interfaceContextualType.js
@@ -26,7 +26,7 @@ class Bug {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/interfaceExtendingClass.js b/tests/baselines/reference/interfaceExtendingClass.js
index c261cec161..b4760fd71f 100644
--- a/tests/baselines/reference/interfaceExtendingClass.js
+++ b/tests/baselines/reference/interfaceExtendingClass.js
@@ -23,7 +23,7 @@ i = f;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/interfaceExtendingClass2.js b/tests/baselines/reference/interfaceExtendingClass2.js
index 2777969b4a..6f2920f339 100644
--- a/tests/baselines/reference/interfaceExtendingClass2.js
+++ b/tests/baselines/reference/interfaceExtendingClass2.js
@@ -19,7 +19,7 @@ interface I2 extends Foo { // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/interfaceExtendsClass1.js b/tests/baselines/reference/interfaceExtendsClass1.js
index 0a3ce70493..6a37907a4e 100644
--- a/tests/baselines/reference/interfaceExtendsClass1.js
+++ b/tests/baselines/reference/interfaceExtendsClass1.js
@@ -32,7 +32,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/interfaceExtendsClassWithPrivate1.js b/tests/baselines/reference/interfaceExtendsClassWithPrivate1.js
index 81ab9a51f3..d487b24d80 100644
--- a/tests/baselines/reference/interfaceExtendsClassWithPrivate1.js
+++ b/tests/baselines/reference/interfaceExtendsClassWithPrivate1.js
@@ -31,7 +31,7 @@ d = c; // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/interfaceExtendsClassWithPrivate2.js b/tests/baselines/reference/interfaceExtendsClassWithPrivate2.js
index 701834e824..5b64492f2a 100644
--- a/tests/baselines/reference/interfaceExtendsClassWithPrivate2.js
+++ b/tests/baselines/reference/interfaceExtendsClassWithPrivate2.js
@@ -27,7 +27,7 @@ class D2 extends C implements I { // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/interfaceImplementation1.js b/tests/baselines/reference/interfaceImplementation1.js
index 68143ac929..0896436192 100644
--- a/tests/baselines/reference/interfaceImplementation1.js
+++ b/tests/baselines/reference/interfaceImplementation1.js
@@ -50,7 +50,7 @@ c["foo"];
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/interfaceImplementation3.js b/tests/baselines/reference/interfaceImplementation3.js
index fd044f65fb..f7eb674749 100644
--- a/tests/baselines/reference/interfaceImplementation3.js
+++ b/tests/baselines/reference/interfaceImplementation3.js
@@ -19,7 +19,7 @@ class C4 implements I1 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/interfaceImplementation4.js b/tests/baselines/reference/interfaceImplementation4.js
index 226c21d00f..555175f7eb 100644
--- a/tests/baselines/reference/interfaceImplementation4.js
+++ b/tests/baselines/reference/interfaceImplementation4.js
@@ -17,7 +17,7 @@ class C5 implements I1 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/interfaceImplementation7.js b/tests/baselines/reference/interfaceImplementation7.js
index 147a073dc9..8a4278cecd 100644
--- a/tests/baselines/reference/interfaceImplementation7.js
+++ b/tests/baselines/reference/interfaceImplementation7.js
@@ -14,7 +14,7 @@ class C1 implements i4 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/interfaceSubtyping.js b/tests/baselines/reference/interfaceSubtyping.js
index a26a70667e..6ca6914e97 100644
--- a/tests/baselines/reference/interfaceSubtyping.js
+++ b/tests/baselines/reference/interfaceSubtyping.js
@@ -13,7 +13,7 @@ class Camera implements iface{
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/interfaceWithPropertyThatIsPrivateInBaseType2.js b/tests/baselines/reference/interfaceWithPropertyThatIsPrivateInBaseType2.js
index e971fcb046..5df6f0ed38 100644
--- a/tests/baselines/reference/interfaceWithPropertyThatIsPrivateInBaseType2.js
+++ b/tests/baselines/reference/interfaceWithPropertyThatIsPrivateInBaseType2.js
@@ -19,7 +19,7 @@ interface Foo2<T> extends Base2<T> { // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/internalAliasClassInsideLocalModuleWithExport.js b/tests/baselines/reference/internalAliasClassInsideLocalModuleWithExport.js
index 0b849d3f2d..6d1e381bb8 100644
--- a/tests/baselines/reference/internalAliasClassInsideLocalModuleWithExport.js
+++ b/tests/baselines/reference/internalAliasClassInsideLocalModuleWithExport.js
@@ -22,7 +22,7 @@ export var d = new m2.m3.c();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/internalAliasClassInsideLocalModuleWithoutExport.js b/tests/baselines/reference/internalAliasClassInsideLocalModuleWithoutExport.js
index 4ffe305993..0559262645 100644
--- a/tests/baselines/reference/internalAliasClassInsideLocalModuleWithoutExport.js
+++ b/tests/baselines/reference/internalAliasClassInsideLocalModuleWithoutExport.js
@@ -20,7 +20,7 @@ export module m2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/internalAliasClassInsideLocalModuleWithoutExportAccessError.js b/tests/baselines/reference/internalAliasClassInsideLocalModuleWithoutExportAccessError.js
index 753edac75c..81e1b34cdc 100644
--- a/tests/baselines/reference/internalAliasClassInsideLocalModuleWithoutExportAccessError.js
+++ b/tests/baselines/reference/internalAliasClassInsideLocalModuleWithoutExportAccessError.js
@@ -22,7 +22,7 @@ export var d = new m2.m3.c();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/internalAliasClassInsideTopLevelModuleWithExport.js b/tests/baselines/reference/internalAliasClassInsideTopLevelModuleWithExport.js
index d659e75b03..55098dd39c 100644
--- a/tests/baselines/reference/internalAliasClassInsideTopLevelModuleWithExport.js
+++ b/tests/baselines/reference/internalAliasClassInsideTopLevelModuleWithExport.js
@@ -16,7 +16,7 @@ var cReturnVal = cProp.foo(10);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/internalAliasClassInsideTopLevelModuleWithoutExport.js b/tests/baselines/reference/internalAliasClassInsideTopLevelModuleWithoutExport.js
index 332fa03292..4325103f1c 100644
--- a/tests/baselines/reference/internalAliasClassInsideTopLevelModuleWithoutExport.js
+++ b/tests/baselines/reference/internalAliasClassInsideTopLevelModuleWithoutExport.js
@@ -16,7 +16,7 @@ var cReturnVal = cProp.foo(10);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/invalidNewTarget.es5.js b/tests/baselines/reference/invalidNewTarget.es5.js
index 31a2449fc9..e27598f8ed 100644
--- a/tests/baselines/reference/invalidNewTarget.es5.js
+++ b/tests/baselines/reference/invalidNewTarget.es5.js
@@ -28,7 +28,7 @@ const O = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/invalidReturnStatements.js b/tests/baselines/reference/invalidReturnStatements.js
index 076aa3f89b..d06262d295 100644
--- a/tests/baselines/reference/invalidReturnStatements.js
+++ b/tests/baselines/reference/invalidReturnStatements.js
@@ -24,7 +24,7 @@ function fn11(): D { return new C(); }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/invalidStaticField.js b/tests/baselines/reference/invalidStaticField.js
index a72fcafdc6..3d6990ae6a 100644
--- a/tests/baselines/reference/invalidStaticField.js
+++ b/tests/baselines/reference/invalidStaticField.js
@@ -6,7 +6,7 @@ class B { static NOT_NULL = new B(); }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/invalidThisEmitInContextualObjectLiteral.js b/tests/baselines/reference/invalidThisEmitInContextualObjectLiteral.js
index 9817156ae9..521d822f7c 100644
--- a/tests/baselines/reference/invalidThisEmitInContextualObjectLiteral.js
+++ b/tests/baselines/reference/invalidThisEmitInContextualObjectLiteral.js
@@ -17,7 +17,7 @@ class TestController {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/jsFileCompilationClassMethodContainingArrowFunction.js b/tests/baselines/reference/jsFileCompilationClassMethodContainingArrowFunction.js
index 4aea7a89d1..5cea9576cc 100644
--- a/tests/baselines/reference/jsFileCompilationClassMethodContainingArrowFunction.js
+++ b/tests/baselines/reference/jsFileCompilationClassMethodContainingArrowFunction.js
@@ -9,7 +9,7 @@ class c {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/jsxFactoryQualifiedNameWithEs5.js b/tests/baselines/reference/jsxFactoryQualifiedNameWithEs5.js
index 58ecdfaa41..dfe269edba 100644
--- a/tests/baselines/reference/jsxFactoryQualifiedNameWithEs5.js
+++ b/tests/baselines/reference/jsxFactoryQualifiedNameWithEs5.js
@@ -15,7 +15,7 @@ class Component {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/jsxInExtendsClause.js b/tests/baselines/reference/jsxInExtendsClause.js
index 5d4fc0007b..4e57fb496b 100644
--- a/tests/baselines/reference/jsxInExtendsClause.js
+++ b/tests/baselines/reference/jsxInExtendsClause.js
@@ -25,7 +25,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/jsxViaImport.2.js b/tests/baselines/reference/jsxViaImport.2.js
index 3406b9c9a7..1cb3e09a87 100644
--- a/tests/baselines/reference/jsxViaImport.2.js
+++ b/tests/baselines/reference/jsxViaImport.2.js
@@ -37,7 +37,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/jsxViaImport.js b/tests/baselines/reference/jsxViaImport.js
index 09d2f7a97a..5ebd933cfd 100644
--- a/tests/baselines/reference/jsxViaImport.js
+++ b/tests/baselines/reference/jsxViaImport.js
@@ -37,7 +37,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/keyofAndIndexedAccess.js b/tests/baselines/reference/keyofAndIndexedAccess.js
index 01972cc6dc..ae4706ddbc 100644
--- a/tests/baselines/reference/keyofAndIndexedAccess.js
+++ b/tests/baselines/reference/keyofAndIndexedAccess.js
@@ -568,7 +568,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/lambdaArgCrash.js b/tests/baselines/reference/lambdaArgCrash.js
index 01e9b419bf..b4c0d0a1d5 100644
--- a/tests/baselines/reference/lambdaArgCrash.js
+++ b/tests/baselines/reference/lambdaArgCrash.js
@@ -38,7 +38,7 @@ class ItemSetEvent extends Event {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/lambdaPropSelf.js b/tests/baselines/reference/lambdaPropSelf.js
index a941580a95..c894447f8b 100644
--- a/tests/baselines/reference/lambdaPropSelf.js
+++ b/tests/baselines/reference/lambdaPropSelf.js
@@ -27,7 +27,7 @@ module M {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/lift.js b/tests/baselines/reference/lift.js
index 0a952cbc2f..d3e55942c0 100644
--- a/tests/baselines/reference/lift.js
+++ b/tests/baselines/reference/lift.js
@@ -31,7 +31,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/listFailure.js b/tests/baselines/reference/listFailure.js
index 806bbb0dee..39fa7ca40e 100644
--- a/tests/baselines/reference/listFailure.js
+++ b/tests/baselines/reference/listFailure.js
@@ -45,7 +45,7 @@ module Editor {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/literalTypes2.js b/tests/baselines/reference/literalTypes2.js
index 9c4cdcd025..cea189eb00 100644
--- a/tests/baselines/reference/literalTypes2.js
+++ b/tests/baselines/reference/literalTypes2.js
@@ -183,7 +183,7 @@ aa = append(aa, 1);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/localTypes1.js b/tests/baselines/reference/localTypes1.js
index 6e166f4640..5efade1dad 100644
--- a/tests/baselines/reference/localTypes1.js
+++ b/tests/baselines/reference/localTypes1.js
@@ -144,7 +144,7 @@ function f6() {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/localTypes5.js b/tests/baselines/reference/localTypes5.js
index 827fabe52a..bed390ada8 100644
--- a/tests/baselines/reference/localTypes5.js
+++ b/tests/baselines/reference/localTypes5.js
@@ -19,7 +19,7 @@ var x = foo<void>();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/looseThisTypeInFunctions.js b/tests/baselines/reference/looseThisTypeInFunctions.js
index 058a72efa9..958532ff02 100644
--- a/tests/baselines/reference/looseThisTypeInFunctions.js
+++ b/tests/baselines/reference/looseThisTypeInFunctions.js
@@ -52,7 +52,7 @@ i.explicitThis = function(m) {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/mappedTypeErrors.js b/tests/baselines/reference/mappedTypeErrors.js
index 1ed223c379..c26b72ad21 100644
--- a/tests/baselines/reference/mappedTypeErrors.js
+++ b/tests/baselines/reference/mappedTypeErrors.js
@@ -148,7 +148,7 @@ let f: Foo2<O, 'x'> = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/mappedTypePartialConstraints.js b/tests/baselines/reference/mappedTypePartialConstraints.js
index b111e292a6..a528a62b2b 100644
--- a/tests/baselines/reference/mappedTypePartialConstraints.js
+++ b/tests/baselines/reference/mappedTypePartialConstraints.js
@@ -21,7 +21,7 @@ fn(MySubClass);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/matchReturnTypeInAllBranches.js b/tests/baselines/reference/matchReturnTypeInAllBranches.js
index 95b61d7d8f..b271f0b1d2 100644
--- a/tests/baselines/reference/matchReturnTypeInAllBranches.js
+++ b/tests/baselines/reference/matchReturnTypeInAllBranches.js
@@ -39,7 +39,7 @@ cookieMonster = new IceCreamMonster("Chocolate Chip", false, "COOOOOKIE", "Cooki
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/memberFunctionsWithPrivateOverloads.js b/tests/baselines/reference/memberFunctionsWithPrivateOverloads.js
index 65f1510eca..dfe9cdfc55 100644
--- a/tests/baselines/reference/memberFunctionsWithPrivateOverloads.js
+++ b/tests/baselines/reference/memberFunctionsWithPrivateOverloads.js
@@ -53,7 +53,7 @@ var r4 = D.bar(''); // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/memberFunctionsWithPublicOverloads.js b/tests/baselines/reference/memberFunctionsWithPublicOverloads.js
index 3d0027bd26..52374a3f38 100644
--- a/tests/baselines/reference/memberFunctionsWithPublicOverloads.js
+++ b/tests/baselines/reference/memberFunctionsWithPublicOverloads.js
@@ -44,7 +44,7 @@ class D<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/memberFunctionsWithPublicPrivateOverloads.js b/tests/baselines/reference/memberFunctionsWithPublicPrivateOverloads.js
index 6492930b81..fb670bf3ed 100644
--- a/tests/baselines/reference/memberFunctionsWithPublicPrivateOverloads.js
+++ b/tests/baselines/reference/memberFunctionsWithPublicPrivateOverloads.js
@@ -66,7 +66,7 @@ var r2 = d.foo(2); // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/mergedDeclarations5.js b/tests/baselines/reference/mergedDeclarations5.js
index d641665b18..8dd7d6944d 100644
--- a/tests/baselines/reference/mergedDeclarations5.js
+++ b/tests/baselines/reference/mergedDeclarations5.js
@@ -15,7 +15,7 @@ class B extends A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -47,7 +47,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/mergedDeclarations6.js b/tests/baselines/reference/mergedDeclarations6.js
index 54e2435a57..fd50022e43 100644
--- a/tests/baselines/reference/mergedDeclarations6.js
+++ b/tests/baselines/reference/mergedDeclarations6.js
@@ -26,7 +26,7 @@ export class B extends A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -65,7 +65,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/mergedInheritedClassInterface.js b/tests/baselines/reference/mergedInheritedClassInterface.js
index 77726d28a3..c3823ebef7 100644
--- a/tests/baselines/reference/mergedInheritedClassInterface.js
+++ b/tests/baselines/reference/mergedInheritedClassInterface.js
@@ -50,7 +50,7 @@ grandchild.method2();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/methodContainingLocalFunction.js b/tests/baselines/reference/methodContainingLocalFunction.js
index 224f3e311f..4ecbd8f700 100644
--- a/tests/baselines/reference/methodContainingLocalFunction.js
+++ b/tests/baselines/reference/methodContainingLocalFunction.js
@@ -54,7 +54,7 @@ enum E {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/methodSignatureDeclarationEmit1.js b/tests/baselines/reference/methodSignatureDeclarationEmit1.js
index 8258410ce6..2ff6e1412e 100644
--- a/tests/baselines/reference/methodSignatureDeclarationEmit1.js
+++ b/tests/baselines/reference/methodSignatureDeclarationEmit1.js
@@ -10,7 +10,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/mismatchedGenericArguments1.js b/tests/baselines/reference/mismatchedGenericArguments1.js
index 20bf81461f..b45100a654 100644
--- a/tests/baselines/reference/mismatchedGenericArguments1.js
+++ b/tests/baselines/reference/mismatchedGenericArguments1.js
@@ -19,7 +19,7 @@ class C2<T> implements IFoo<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/missingDecoratorType.js b/tests/baselines/reference/missingDecoratorType.js
index 8f2ba5176b..d5ed28e270 100644
--- a/tests/baselines/reference/missingDecoratorType.js
+++ b/tests/baselines/reference/missingDecoratorType.js
@@ -25,7 +25,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/missingPropertiesOfClassExpression.js b/tests/baselines/reference/missingPropertiesOfClassExpression.js
index 24a6092334..d3c072e030 100644
--- a/tests/baselines/reference/missingPropertiesOfClassExpression.js
+++ b/tests/baselines/reference/missingPropertiesOfClassExpression.js
@@ -20,7 +20,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/missingReturnStatement.js b/tests/baselines/reference/missingReturnStatement.js
index 44270f48df..64570f9f92 100644
--- a/tests/baselines/reference/missingReturnStatement.js
+++ b/tests/baselines/reference/missingReturnStatement.js
@@ -11,7 +11,7 @@ module Test {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/missingReturnStatement1.js b/tests/baselines/reference/missingReturnStatement1.js
index e3262b9664..1333d699e9 100644
--- a/tests/baselines/reference/missingReturnStatement1.js
+++ b/tests/baselines/reference/missingReturnStatement1.js
@@ -10,7 +10,7 @@ class Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/missingSelf.js b/tests/baselines/reference/missingSelf.js
index 5f7a96023a..f24c8914f2 100644
--- a/tests/baselines/reference/missingSelf.js
+++ b/tests/baselines/reference/missingSelf.js
@@ -22,7 +22,7 @@ c2.b();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/mixedStaticAndInstanceClassMembers.js b/tests/baselines/reference/mixedStaticAndInstanceClassMembers.js
index 4f00ce2ba3..934c0822ea 100644
--- a/tests/baselines/reference/mixedStaticAndInstanceClassMembers.js
+++ b/tests/baselines/reference/mixedStaticAndInstanceClassMembers.js
@@ -19,7 +19,7 @@ class B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/mixinAccessModifiers.js b/tests/baselines/reference/mixinAccessModifiers.js
index c47a24a063..52723c951d 100644
--- a/tests/baselines/reference/mixinAccessModifiers.js
+++ b/tests/baselines/reference/mixinAccessModifiers.js
@@ -121,7 +121,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/mixinClassesAnnotated.js b/tests/baselines/reference/mixinClassesAnnotated.js
index e46d76986b..bd7a4bb59a 100644
--- a/tests/baselines/reference/mixinClassesAnnotated.js
+++ b/tests/baselines/reference/mixinClassesAnnotated.js
@@ -80,7 +80,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/mixinClassesAnonymous.js b/tests/baselines/reference/mixinClassesAnonymous.js
index d0ccd9a8f9..22333800d5 100644
--- a/tests/baselines/reference/mixinClassesAnonymous.js
+++ b/tests/baselines/reference/mixinClassesAnonymous.js
@@ -79,7 +79,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/mixinClassesMembers.js b/tests/baselines/reference/mixinClassesMembers.js
index 4224fb8692..9063afc15e 100644
--- a/tests/baselines/reference/mixinClassesMembers.js
+++ b/tests/baselines/reference/mixinClassesMembers.js
@@ -112,7 +112,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/mixinPrivateAndProtected.js b/tests/baselines/reference/mixinPrivateAndProtected.js
index 694af2293b..dde436a77a 100644
--- a/tests/baselines/reference/mixinPrivateAndProtected.js
+++ b/tests/baselines/reference/mixinPrivateAndProtected.js
@@ -104,7 +104,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/mixingStaticAndInstanceOverloads.js b/tests/baselines/reference/mixingStaticAndInstanceOverloads.js
index 44852f3274..bcd1da3265 100644
--- a/tests/baselines/reference/mixingStaticAndInstanceOverloads.js
+++ b/tests/baselines/reference/mixingStaticAndInstanceOverloads.js
@@ -39,7 +39,7 @@ class C5 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/modifierOnClassDeclarationMemberInFunction.js b/tests/baselines/reference/modifierOnClassDeclarationMemberInFunction.js
index 634f21cc55..6f186c8811 100644
--- a/tests/baselines/reference/modifierOnClassDeclarationMemberInFunction.js
+++ b/tests/baselines/reference/modifierOnClassDeclarationMemberInFunction.js
@@ -11,7 +11,7 @@ function f() {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/modifierOnClassExpressionMemberInFunction.js b/tests/baselines/reference/modifierOnClassExpressionMemberInFunction.js
index f4fac0f61a..67028167db 100644
--- a/tests/baselines/reference/modifierOnClassExpressionMemberInFunction.js
+++ b/tests/baselines/reference/modifierOnClassExpressionMemberInFunction.js
@@ -11,7 +11,7 @@ function g() {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/moduleAliasInterface.js b/tests/baselines/reference/moduleAliasInterface.js
index 051a2ac7c3..3d3717b37b 100644
--- a/tests/baselines/reference/moduleAliasInterface.js
+++ b/tests/baselines/reference/moduleAliasInterface.js
@@ -59,7 +59,7 @@ module B1 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/moduleCodeGenTest5.js b/tests/baselines/reference/moduleCodeGenTest5.js
index cf34adbe61..32153a82bb 100644
--- a/tests/baselines/reference/moduleCodeGenTest5.js
+++ b/tests/baselines/reference/moduleCodeGenTest5.js
@@ -26,7 +26,7 @@ var v = E2.B;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/moduleMemberWithoutTypeAnnotation1.js b/tests/baselines/reference/moduleMemberWithoutTypeAnnotation1.js
index 63ed994c03..285c973eb6 100644
--- a/tests/baselines/reference/moduleMemberWithoutTypeAnnotation1.js
+++ b/tests/baselines/reference/moduleMemberWithoutTypeAnnotation1.js
@@ -50,7 +50,7 @@ module TypeScript.Syntax {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/moduleMerge.js b/tests/baselines/reference/moduleMerge.js
index 1fe47289ed..4a14ca6706 100644
--- a/tests/baselines/reference/moduleMerge.js
+++ b/tests/baselines/reference/moduleMerge.js
@@ -28,7 +28,7 @@ module A
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/moduleNewExportBug.js b/tests/baselines/reference/moduleNewExportBug.js
index f192058b28..04b2a518e9 100644
--- a/tests/baselines/reference/moduleNewExportBug.js
+++ b/tests/baselines/reference/moduleNewExportBug.js
@@ -17,7 +17,7 @@ var c : mod1.C; // ERROR: C should not be visible
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/moduleReopenedTypeOtherBlock.js b/tests/baselines/reference/moduleReopenedTypeOtherBlock.js
index d6522168aa..d9290cbac9 100644
--- a/tests/baselines/reference/moduleReopenedTypeOtherBlock.js
+++ b/tests/baselines/reference/moduleReopenedTypeOtherBlock.js
@@ -12,7 +12,7 @@ module M {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/moduleReopenedTypeSameBlock.js b/tests/baselines/reference/moduleReopenedTypeSameBlock.js
index 21b2c926a5..33625afa7c 100644
--- a/tests/baselines/reference/moduleReopenedTypeSameBlock.js
+++ b/tests/baselines/reference/moduleReopenedTypeSameBlock.js
@@ -10,7 +10,7 @@ module M {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/moduleVisibilityTest1.js b/tests/baselines/reference/moduleVisibilityTest1.js
index d42cc12fd8..0d6c61d2d0 100644
--- a/tests/baselines/reference/moduleVisibilityTest1.js
+++ b/tests/baselines/reference/moduleVisibilityTest1.js
@@ -69,7 +69,7 @@ c.someMethodThatCallsAnOuterMethod();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/moduleVisibilityTest2.js b/tests/baselines/reference/moduleVisibilityTest2.js
index f4c5266a0e..e34fb634d6 100644
--- a/tests/baselines/reference/moduleVisibilityTest2.js
+++ b/tests/baselines/reference/moduleVisibilityTest2.js
@@ -70,7 +70,7 @@ c.someMethodThatCallsAnOuterMethod();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/moduledecl.js b/tests/baselines/reference/moduledecl.js
index 33d213f097..f81639c171 100644
--- a/tests/baselines/reference/moduledecl.js
+++ b/tests/baselines/reference/moduledecl.js
@@ -236,7 +236,7 @@ var m3eVar: mAmbient.m3.e;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/multiImportExport.js b/tests/baselines/reference/multiImportExport.js
index 6a5d15c648..e7c346ffbf 100644
--- a/tests/baselines/reference/multiImportExport.js
+++ b/tests/baselines/reference/multiImportExport.js
@@ -30,7 +30,7 @@ export = Adder;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/multiModuleClodule1.js b/tests/baselines/reference/multiModuleClodule1.js
index 4f28b85a9f..efa7e23066 100644
--- a/tests/baselines/reference/multiModuleClodule1.js
+++ b/tests/baselines/reference/multiModuleClodule1.js
@@ -22,7 +22,7 @@ c.foo = C.foo;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/multipleDeclarations.js b/tests/baselines/reference/multipleDeclarations.js
index 19ee0cef10..e0b598277c 100644
--- a/tests/baselines/reference/multipleDeclarations.js
+++ b/tests/baselines/reference/multipleDeclarations.js
@@ -39,7 +39,7 @@ y.mistake();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/multipleInheritance.js b/tests/baselines/reference/multipleInheritance.js
index 94a7e30402..299d8a572d 100644
--- a/tests/baselines/reference/multipleInheritance.js
+++ b/tests/baselines/reference/multipleInheritance.js
@@ -52,7 +52,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/mutuallyRecursiveGenericBaseTypes2.js b/tests/baselines/reference/mutuallyRecursiveGenericBaseTypes2.js
index 44f6799a03..af35fd2aa0 100644
--- a/tests/baselines/reference/mutuallyRecursiveGenericBaseTypes2.js
+++ b/tests/baselines/reference/mutuallyRecursiveGenericBaseTypes2.js
@@ -14,7 +14,7 @@ var test = new foo<string>();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/narrowTypeByInstanceof.js b/tests/baselines/reference/narrowTypeByInstanceof.js
index effd065ceb..d816c33b35 100644
--- a/tests/baselines/reference/narrowTypeByInstanceof.js
+++ b/tests/baselines/reference/narrowTypeByInstanceof.js
@@ -29,7 +29,7 @@ if (elementA instanceof FileMatch && elementB instanceof FileMatch) {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/narrowedConstInMethod.js b/tests/baselines/reference/narrowedConstInMethod.js
index 83f7680a99..3b7bd9db62 100644
--- a/tests/baselines/reference/narrowedConstInMethod.js
+++ b/tests/baselines/reference/narrowedConstInMethod.js
@@ -23,7 +23,7 @@ function f2() {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/nestedLoops.js b/tests/baselines/reference/nestedLoops.js
index 41ae7693df..d33630267e 100644
--- a/tests/baselines/reference/nestedLoops.js
+++ b/tests/baselines/reference/nestedLoops.js
@@ -22,7 +22,7 @@ export class Test  {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/nestedSelf.js b/tests/baselines/reference/nestedSelf.js
index 80a6aa2c1a..8eb998853d 100644
--- a/tests/baselines/reference/nestedSelf.js
+++ b/tests/baselines/reference/nestedSelf.js
@@ -12,7 +12,7 @@ module M {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/neverType.js b/tests/baselines/reference/neverType.js
index 4043194256..dbf085aefc 100644
--- a/tests/baselines/reference/neverType.js
+++ b/tests/baselines/reference/neverType.js
@@ -94,7 +94,7 @@ test(errorCallback);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/newArrays.js b/tests/baselines/reference/newArrays.js
index a8a7789cae..45ddab29ac 100644
--- a/tests/baselines/reference/newArrays.js
+++ b/tests/baselines/reference/newArrays.js
@@ -16,7 +16,7 @@ module M {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/noCollisionThisExpressionAndLocalVarInMethod.js b/tests/baselines/reference/noCollisionThisExpressionAndLocalVarInMethod.js
index add229d862..21aa3624bc 100644
--- a/tests/baselines/reference/noCollisionThisExpressionAndLocalVarInMethod.js
+++ b/tests/baselines/reference/noCollisionThisExpressionAndLocalVarInMethod.js
@@ -23,7 +23,7 @@ class a {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/noImplicitAnyDestructuringInPrivateMethod.js b/tests/baselines/reference/noImplicitAnyDestructuringInPrivateMethod.js
index 8f98404eab..09ce51a738 100644
--- a/tests/baselines/reference/noImplicitAnyDestructuringInPrivateMethod.js
+++ b/tests/baselines/reference/noImplicitAnyDestructuringInPrivateMethod.js
@@ -16,7 +16,7 @@ export declare class Bar2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/noImplicitAnyForMethodParameters.js b/tests/baselines/reference/noImplicitAnyForMethodParameters.js
index ba103f863c..15dc1740e9 100644
--- a/tests/baselines/reference/noImplicitAnyForMethodParameters.js
+++ b/tests/baselines/reference/noImplicitAnyForMethodParameters.js
@@ -18,7 +18,7 @@ class D {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/noImplicitAnyParametersInClass.js b/tests/baselines/reference/noImplicitAnyParametersInClass.js
index 6b46d09009..bbd6454c49 100644
--- a/tests/baselines/reference/noImplicitAnyParametersInClass.js
+++ b/tests/baselines/reference/noImplicitAnyParametersInClass.js
@@ -95,7 +95,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/noTypeArgumentOnReturnType1.js b/tests/baselines/reference/noTypeArgumentOnReturnType1.js
index 0a6c0cab19..14ecf60ed5 100644
--- a/tests/baselines/reference/noTypeArgumentOnReturnType1.js
+++ b/tests/baselines/reference/noTypeArgumentOnReturnType1.js
@@ -10,7 +10,7 @@ class A<T>{
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/noUnusedLocals_selfReference.js b/tests/baselines/reference/noUnusedLocals_selfReference.js
index 74a39923d5..40bb319773 100644
--- a/tests/baselines/reference/noUnusedLocals_selfReference.js
+++ b/tests/baselines/reference/noUnusedLocals_selfReference.js
@@ -18,12 +18,27 @@ P;
 
 //// [noUnusedLocals_selfReference.js]
 "use strict";
+var __names = (this && this.__names) || (function() {
+    var name = Object.defineProperty ? (function(proto, name) {
+        Object.defineProperty(proto[name], 'name', { 
+            value: name, configurable: true
+        });
+    }) : (function(proto, name) {
+        proto[name].name = name;
+    });
+    return function (proto, keys) {
+        for (var i = keys.length - 1; i >= 0; i--) {
+            name(proto, keys[i])
+        }
+    };
+})();
 exports.__esModule = true;
 function f() { f; }
 var C = (function () {
     function C() {
     }
     C.prototype.m = function () { C; };
+    __names(C.prototype, ["m"]);
     return C;
 }());
 var E;
@@ -37,6 +52,7 @@ var D = (function () {
     function D() {
     }
     D.prototype.m = function () { g; };
+    __names(D.prototype, ["m"]);
     return D;
 }());
 // Does not work on private methods.
@@ -44,6 +60,7 @@ var P = (function () {
     function P() {
     }
     P.prototype.m = function () { this.m; };
+    __names(P.prototype, ["m"]);
     return P;
 }());
 P;
diff --git a/tests/baselines/reference/nonMergedDeclarationsAndOverloads.js b/tests/baselines/reference/nonMergedDeclarationsAndOverloads.js
index d4d5574751..438832bcfd 100644
--- a/tests/baselines/reference/nonMergedDeclarationsAndOverloads.js
+++ b/tests/baselines/reference/nonMergedDeclarationsAndOverloads.js
@@ -12,7 +12,7 @@ class A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/numericIndexerConstrainsPropertyDeclarations.js b/tests/baselines/reference/numericIndexerConstrainsPropertyDeclarations.js
index 747bb47e73..2bd145499e 100644
--- a/tests/baselines/reference/numericIndexerConstrainsPropertyDeclarations.js
+++ b/tests/baselines/reference/numericIndexerConstrainsPropertyDeclarations.js
@@ -102,7 +102,7 @@ var b: { [x: number]: string; } = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/numericIndexerConstrainsPropertyDeclarations2.js b/tests/baselines/reference/numericIndexerConstrainsPropertyDeclarations2.js
index 0ca16f8dc9..b9b8c685b8 100644
--- a/tests/baselines/reference/numericIndexerConstrainsPropertyDeclarations2.js
+++ b/tests/baselines/reference/numericIndexerConstrainsPropertyDeclarations2.js
@@ -50,7 +50,7 @@ var b: { [x: number]: A } = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/numericIndexerConstraint1.js b/tests/baselines/reference/numericIndexerConstraint1.js
index 8598b71c11..6e8d97bc24 100644
--- a/tests/baselines/reference/numericIndexerConstraint1.js
+++ b/tests/baselines/reference/numericIndexerConstraint1.js
@@ -8,7 +8,7 @@ var result: Foo = x["one"]; // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/numericIndexerConstraint2.js b/tests/baselines/reference/numericIndexerConstraint2.js
index feaba238cc..804a705fc1 100644
--- a/tests/baselines/reference/numericIndexerConstraint2.js
+++ b/tests/baselines/reference/numericIndexerConstraint2.js
@@ -8,7 +8,7 @@ x = a;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectCreationOfElementAccessExpression.js b/tests/baselines/reference/objectCreationOfElementAccessExpression.js
index d1dc0daeb1..6b0c55dbe4 100644
--- a/tests/baselines/reference/objectCreationOfElementAccessExpression.js
+++ b/tests/baselines/reference/objectCreationOfElementAccessExpression.js
@@ -59,7 +59,7 @@ var foods2: MonsterFood[] = new PetFood[new IceCream('Mint chocolate chip') , Co
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectRestParameterES5.js b/tests/baselines/reference/objectRestParameterES5.js
index 333c52710c..397885a931 100644
--- a/tests/baselines/reference/objectRestParameterES5.js
+++ b/tests/baselines/reference/objectRestParameterES5.js
@@ -25,7 +25,7 @@ foobar({ bar: { greeting: 'hello' } });
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectSpread.js b/tests/baselines/reference/objectSpread.js
index 56e49cdb9f..81e6aa14d5 100644
--- a/tests/baselines/reference/objectSpread.js
+++ b/tests/baselines/reference/objectSpread.js
@@ -86,7 +86,7 @@ let spreadNonPrimitive = { ...<object>{}};
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectSpreadNegative.js b/tests/baselines/reference/objectSpreadNegative.js
index 8c8d65110a..0a5412a3ab 100644
--- a/tests/baselines/reference/objectSpreadNegative.js
+++ b/tests/baselines/reference/objectSpreadNegative.js
@@ -88,7 +88,7 @@ const a3: A = { ...extra3 }; // same here
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypeHidingMembersOfExtendedObject.js b/tests/baselines/reference/objectTypeHidingMembersOfExtendedObject.js
index b8d90e27d8..9fdbbcc5f5 100644
--- a/tests/baselines/reference/objectTypeHidingMembersOfExtendedObject.js
+++ b/tests/baselines/reference/objectTypeHidingMembersOfExtendedObject.js
@@ -68,7 +68,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypeHidingMembersOfObject.js b/tests/baselines/reference/objectTypeHidingMembersOfObject.js
index 4e1bfbad11..a0aa47872f 100644
--- a/tests/baselines/reference/objectTypeHidingMembersOfObject.js
+++ b/tests/baselines/reference/objectTypeHidingMembersOfObject.js
@@ -32,7 +32,7 @@ var r4: void = b.valueOf();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypeHidingMembersOfObjectAssignmentCompat.js b/tests/baselines/reference/objectTypeHidingMembersOfObjectAssignmentCompat.js
index 65bebfd628..1c4b4bc2c7 100644
--- a/tests/baselines/reference/objectTypeHidingMembersOfObjectAssignmentCompat.js
+++ b/tests/baselines/reference/objectTypeHidingMembersOfObjectAssignmentCompat.js
@@ -25,7 +25,7 @@ a = o; // ok
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypeHidingMembersOfObjectAssignmentCompat2.js b/tests/baselines/reference/objectTypeHidingMembersOfObjectAssignmentCompat2.js
index 0fbc932027..7acacf3d8b 100644
--- a/tests/baselines/reference/objectTypeHidingMembersOfObjectAssignmentCompat2.js
+++ b/tests/baselines/reference/objectTypeHidingMembersOfObjectAssignmentCompat2.js
@@ -25,7 +25,7 @@ a = o; // ok
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithCallSignatures.js b/tests/baselines/reference/objectTypesIdentityWithCallSignatures.js
index 01a3178b19..bbb6b24c68 100644
--- a/tests/baselines/reference/objectTypesIdentityWithCallSignatures.js
+++ b/tests/baselines/reference/objectTypesIdentityWithCallSignatures.js
@@ -105,7 +105,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithCallSignatures2.js b/tests/baselines/reference/objectTypesIdentityWithCallSignatures2.js
index a50c1b0a4d..12cfb66006 100644
--- a/tests/baselines/reference/objectTypesIdentityWithCallSignatures2.js
+++ b/tests/baselines/reference/objectTypesIdentityWithCallSignatures2.js
@@ -105,7 +105,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithCallSignaturesDifferingParamCounts.js b/tests/baselines/reference/objectTypesIdentityWithCallSignaturesDifferingParamCounts.js
index af45d5726e..6ee10c9806 100644
--- a/tests/baselines/reference/objectTypesIdentityWithCallSignaturesDifferingParamCounts.js
+++ b/tests/baselines/reference/objectTypesIdentityWithCallSignaturesDifferingParamCounts.js
@@ -105,7 +105,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithCallSignaturesWithOverloads.js b/tests/baselines/reference/objectTypesIdentityWithCallSignaturesWithOverloads.js
index 8e17c0def5..551e40ee14 100644
--- a/tests/baselines/reference/objectTypesIdentityWithCallSignaturesWithOverloads.js
+++ b/tests/baselines/reference/objectTypesIdentityWithCallSignaturesWithOverloads.js
@@ -121,7 +121,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignatures.js b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignatures.js
index 6052c106f0..c7a41666e1 100644
--- a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignatures.js
+++ b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignatures.js
@@ -105,7 +105,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignatures2.js b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignatures2.js
index 93460429a2..902fb622a5 100644
--- a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignatures2.js
+++ b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignatures2.js
@@ -105,7 +105,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByConstraints.js b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByConstraints.js
index c456df6bb9..7ae2c01119 100644
--- a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByConstraints.js
+++ b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByConstraints.js
@@ -109,7 +109,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByConstraints2.js b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByConstraints2.js
index edae16682f..166576aa9a 100644
--- a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByConstraints2.js
+++ b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByConstraints2.js
@@ -121,7 +121,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByConstraints3.js b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByConstraints3.js
index 6055e11b5e..671ad76ddd 100644
--- a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByConstraints3.js
+++ b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByConstraints3.js
@@ -130,7 +130,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByReturnType.js b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByReturnType.js
index 1969f5b6ef..4862c6abb6 100644
--- a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByReturnType.js
+++ b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByReturnType.js
@@ -109,7 +109,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByReturnType2.js b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByReturnType2.js
index 79258ae678..23d79fd92c 100644
--- a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByReturnType2.js
+++ b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingByReturnType2.js
@@ -109,7 +109,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingTypeParameterCounts.js b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingTypeParameterCounts.js
index 41ccc9db1a..fcd059ad69 100644
--- a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingTypeParameterCounts.js
+++ b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingTypeParameterCounts.js
@@ -105,7 +105,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingTypeParameterNames.js b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingTypeParameterNames.js
index 6d6814a8c5..d7cf22a178 100644
--- a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingTypeParameterNames.js
+++ b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesDifferingTypeParameterNames.js
@@ -105,7 +105,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesOptionalParams.js b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesOptionalParams.js
index 004ebd9f4d..81afdb4269 100644
--- a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesOptionalParams.js
+++ b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesOptionalParams.js
@@ -109,7 +109,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesOptionalParams2.js b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesOptionalParams2.js
index 3a4f0f84a7..d0b8d4906a 100644
--- a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesOptionalParams2.js
+++ b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesOptionalParams2.js
@@ -109,7 +109,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesOptionalParams3.js b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesOptionalParams3.js
index e6b76b836f..843cbc1caf 100644
--- a/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesOptionalParams3.js
+++ b/tests/baselines/reference/objectTypesIdentityWithGenericCallSignaturesOptionalParams3.js
@@ -109,7 +109,7 @@ function foo15(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/objectTypesWithOptionalProperties2.js b/tests/baselines/reference/objectTypesWithOptionalProperties2.js
index 105b84f866..df23950250 100644
--- a/tests/baselines/reference/objectTypesWithOptionalProperties2.js
+++ b/tests/baselines/reference/objectTypesWithOptionalProperties2.js
@@ -31,7 +31,7 @@ var b = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/optionalArgsWithDefaultValues.js b/tests/baselines/reference/optionalArgsWithDefaultValues.js
index 2df38f084d..27b4adcac9 100644
--- a/tests/baselines/reference/optionalArgsWithDefaultValues.js
+++ b/tests/baselines/reference/optionalArgsWithDefaultValues.js
@@ -13,7 +13,7 @@ var b = (x, y?:number = 2) => { x; };
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/optionalConstructorArgInSuper.js b/tests/baselines/reference/optionalConstructorArgInSuper.js
index a321412c28..e64a0ed21e 100644
--- a/tests/baselines/reference/optionalConstructorArgInSuper.js
+++ b/tests/baselines/reference/optionalConstructorArgInSuper.js
@@ -14,7 +14,7 @@ d2.foo();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/optionalMethods.js b/tests/baselines/reference/optionalMethods.js
index 2703f216d4..da23869b1c 100644
--- a/tests/baselines/reference/optionalMethods.js
+++ b/tests/baselines/reference/optionalMethods.js
@@ -60,7 +60,7 @@ class Derived extends Base {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/optionalParamArgsTest.js b/tests/baselines/reference/optionalParamArgsTest.js
index cdb3c7a0f4..c1f4d997a3 100644
--- a/tests/baselines/reference/optionalParamArgsTest.js
+++ b/tests/baselines/reference/optionalParamArgsTest.js
@@ -128,7 +128,7 @@ fnOpt2(1, [2, 3], [1], true);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/optionalParamInOverride.js b/tests/baselines/reference/optionalParamInOverride.js
index 9be1e47e0d..a477e6d7d1 100644
--- a/tests/baselines/reference/optionalParamInOverride.js
+++ b/tests/baselines/reference/optionalParamInOverride.js
@@ -11,7 +11,7 @@ class Y extends Z {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/out-flag.js b/tests/baselines/reference/out-flag.js
index 2ac1ae636f..800fd75889 100644
--- a/tests/baselines/reference/out-flag.js
+++ b/tests/baselines/reference/out-flag.js
@@ -21,7 +21,7 @@ class MyClass
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/out-flag.sourcemap.txt b/tests/baselines/reference/out-flag.sourcemap.txt
index 5659e3a7bd..05ab41f4a4 100644
--- a/tests/baselines/reference/out-flag.sourcemap.txt
+++ b/tests/baselines/reference/out-flag.sourcemap.txt
@@ -20,7 +20,7 @@ sourceFile:out-flag.ts
 >>>var __names = (this && this.__names) || (function() {
 >>>    var name = Object.defineProperty ? (function(proto, name) {
 >>>        Object.defineProperty(proto[name], 'name', { 
->>>            value: name, configurable: true, writable: false, enumerable: false
+>>>            value: name, configurable: true
 >>>        });
 >>>    }) : (function(proto, name) {
 >>>        proto[name].name = name;
diff --git a/tests/baselines/reference/overloadConsecutiveness.js b/tests/baselines/reference/overloadConsecutiveness.js
index 519bc8e33e..576b6cd93c 100644
--- a/tests/baselines/reference/overloadConsecutiveness.js
+++ b/tests/baselines/reference/overloadConsecutiveness.js
@@ -17,7 +17,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overloadModifiersMustAgree.js b/tests/baselines/reference/overloadModifiersMustAgree.js
index 0b051ad36f..2b1be5cac2 100644
--- a/tests/baselines/reference/overloadModifiersMustAgree.js
+++ b/tests/baselines/reference/overloadModifiersMustAgree.js
@@ -20,7 +20,7 @@ interface I {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overloadOnConstConstraintChecks1.js b/tests/baselines/reference/overloadOnConstConstraintChecks1.js
index 1b466da865..f11ad8011b 100644
--- a/tests/baselines/reference/overloadOnConstConstraintChecks1.js
+++ b/tests/baselines/reference/overloadOnConstConstraintChecks1.js
@@ -26,7 +26,7 @@ class D implements MyDoc {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overloadOnConstConstraintChecks2.js b/tests/baselines/reference/overloadOnConstConstraintChecks2.js
index 485617d000..bccfaf870c 100644
--- a/tests/baselines/reference/overloadOnConstConstraintChecks2.js
+++ b/tests/baselines/reference/overloadOnConstConstraintChecks2.js
@@ -25,7 +25,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overloadOnConstConstraintChecks3.js b/tests/baselines/reference/overloadOnConstConstraintChecks3.js
index 3cee3d0d43..29a9aa2514 100644
--- a/tests/baselines/reference/overloadOnConstConstraintChecks3.js
+++ b/tests/baselines/reference/overloadOnConstConstraintChecks3.js
@@ -26,7 +26,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overloadOnConstConstraintChecks4.js b/tests/baselines/reference/overloadOnConstConstraintChecks4.js
index 6d8e660b56..c0882d297c 100644
--- a/tests/baselines/reference/overloadOnConstConstraintChecks4.js
+++ b/tests/baselines/reference/overloadOnConstConstraintChecks4.js
@@ -27,7 +27,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overloadOnConstInBaseWithBadImplementationInDerived.js b/tests/baselines/reference/overloadOnConstInBaseWithBadImplementationInDerived.js
index da7c4b197a..20f1daee1b 100644
--- a/tests/baselines/reference/overloadOnConstInBaseWithBadImplementationInDerived.js
+++ b/tests/baselines/reference/overloadOnConstInBaseWithBadImplementationInDerived.js
@@ -12,7 +12,7 @@ class C implements I {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overloadOnConstInCallback1.js b/tests/baselines/reference/overloadOnConstInCallback1.js
index d9a1b3eb18..c9bc7da22d 100644
--- a/tests/baselines/reference/overloadOnConstInCallback1.js
+++ b/tests/baselines/reference/overloadOnConstInCallback1.js
@@ -13,7 +13,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overloadOnConstInheritance4.js b/tests/baselines/reference/overloadOnConstInheritance4.js
index 8cac3643f8..00228284ef 100644
--- a/tests/baselines/reference/overloadOnConstInheritance4.js
+++ b/tests/baselines/reference/overloadOnConstInheritance4.js
@@ -13,7 +13,7 @@ class C implements I {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overloadOnConstNoAnyImplementation2.js b/tests/baselines/reference/overloadOnConstNoAnyImplementation2.js
index 364899a14b..8351bcfe5d 100644
--- a/tests/baselines/reference/overloadOnConstNoAnyImplementation2.js
+++ b/tests/baselines/reference/overloadOnConstNoAnyImplementation2.js
@@ -25,7 +25,7 @@ c.x1(1, (x: number) => { return 1; } );
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overloadOnConstNoNonSpecializedSignature.js b/tests/baselines/reference/overloadOnConstNoNonSpecializedSignature.js
index 09c8635c50..a86d480769 100644
--- a/tests/baselines/reference/overloadOnConstNoNonSpecializedSignature.js
+++ b/tests/baselines/reference/overloadOnConstNoNonSpecializedSignature.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overloadOnConstNoStringImplementation2.js b/tests/baselines/reference/overloadOnConstNoStringImplementation2.js
index db7365a46f..0b5f8b6eab 100644
--- a/tests/baselines/reference/overloadOnConstNoStringImplementation2.js
+++ b/tests/baselines/reference/overloadOnConstNoStringImplementation2.js
@@ -24,7 +24,7 @@ c.x1(1, (x: number) => { return 1; } );
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overloadOnConstantsInvalidOverload1.js b/tests/baselines/reference/overloadOnConstantsInvalidOverload1.js
index 5632b76d6a..9657c238e6 100644
--- a/tests/baselines/reference/overloadOnConstantsInvalidOverload1.js
+++ b/tests/baselines/reference/overloadOnConstantsInvalidOverload1.js
@@ -15,7 +15,7 @@ foo("HI");
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overloadResolutionOnDefaultConstructor1.js b/tests/baselines/reference/overloadResolutionOnDefaultConstructor1.js
index 1f816352b5..bec3e0cfd9 100644
--- a/tests/baselines/reference/overloadResolutionOnDefaultConstructor1.js
+++ b/tests/baselines/reference/overloadResolutionOnDefaultConstructor1.js
@@ -9,7 +9,7 @@ class Bar {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overloadingOnConstants1.js b/tests/baselines/reference/overloadingOnConstants1.js
index 0a67c6299f..77e2eaea06 100644
--- a/tests/baselines/reference/overloadingOnConstants1.js
+++ b/tests/baselines/reference/overloadingOnConstants1.js
@@ -29,7 +29,7 @@ var htmlSpanElement2: Derived1 = d2.createElement("span");
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overloadsWithinClasses.js b/tests/baselines/reference/overloadsWithinClasses.js
index f12dd10731..dd2f0187a9 100644
--- a/tests/baselines/reference/overloadsWithinClasses.js
+++ b/tests/baselines/reference/overloadsWithinClasses.js
@@ -27,7 +27,7 @@ class X {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/overrideBaseIntersectionMethod.js b/tests/baselines/reference/overrideBaseIntersectionMethod.js
index 1c637a1f9f..45205d5290 100644
--- a/tests/baselines/reference/overrideBaseIntersectionMethod.js
+++ b/tests/baselines/reference/overrideBaseIntersectionMethod.js
@@ -46,7 +46,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parameterInitializersForwardReferencing.js b/tests/baselines/reference/parameterInitializersForwardReferencing.js
index 9ec7288dbc..30c703fd9a 100644
--- a/tests/baselines/reference/parameterInitializersForwardReferencing.js
+++ b/tests/baselines/reference/parameterInitializersForwardReferencing.js
@@ -45,7 +45,7 @@ function f(a, b = function () { return c; }, c = b()) {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parameterNamesInTypeParameterList.js b/tests/baselines/reference/parameterNamesInTypeParameterList.js
index 808fe980de..1b4823c224 100644
--- a/tests/baselines/reference/parameterNamesInTypeParameterList.js
+++ b/tests/baselines/reference/parameterNamesInTypeParameterList.js
@@ -27,7 +27,7 @@ class A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parameterPropertyOutsideConstructor.js b/tests/baselines/reference/parameterPropertyOutsideConstructor.js
index 3904c5f9ba..e9b894279e 100644
--- a/tests/baselines/reference/parameterPropertyOutsideConstructor.js
+++ b/tests/baselines/reference/parameterPropertyOutsideConstructor.js
@@ -8,7 +8,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parametersWithNoAnnotationAreAny.js b/tests/baselines/reference/parametersWithNoAnnotationAreAny.js
index edd5b2eb3e..ff3ac63cb3 100644
--- a/tests/baselines/reference/parametersWithNoAnnotationAreAny.js
+++ b/tests/baselines/reference/parametersWithNoAnnotationAreAny.js
@@ -33,7 +33,7 @@ var b = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parser509667.js b/tests/baselines/reference/parser509667.js
index cb3561ec4b..3f7e4d64b6 100644
--- a/tests/baselines/reference/parser509667.js
+++ b/tests/baselines/reference/parser509667.js
@@ -15,7 +15,7 @@ class Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parser553699.js b/tests/baselines/reference/parser553699.js
index 21bdb63a2b..034faa4e4e 100644
--- a/tests/baselines/reference/parser553699.js
+++ b/tests/baselines/reference/parser553699.js
@@ -12,7 +12,7 @@ class Bar {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parser618973.js b/tests/baselines/reference/parser618973.js
index e3f1dfd1f9..5edb424fc4 100644
--- a/tests/baselines/reference/parser618973.js
+++ b/tests/baselines/reference/parser618973.js
@@ -9,7 +9,7 @@ export export class Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserAstSpans1.js b/tests/baselines/reference/parserAstSpans1.js
index 7ef97bd74d..26679761d4 100644
--- a/tests/baselines/reference/parserAstSpans1.js
+++ b/tests/baselines/reference/parserAstSpans1.js
@@ -223,7 +223,7 @@ class c6 extends c5 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserClass1.js b/tests/baselines/reference/parserClass1.js
index dc4e0c1d51..883e54274d 100644
--- a/tests/baselines/reference/parserClass1.js
+++ b/tests/baselines/reference/parserClass1.js
@@ -14,7 +14,7 @@
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserClassDeclaration11.js b/tests/baselines/reference/parserClassDeclaration11.js
index 83b356419d..c72875b931 100644
--- a/tests/baselines/reference/parserClassDeclaration11.js
+++ b/tests/baselines/reference/parserClassDeclaration11.js
@@ -8,7 +8,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserClassDeclaration13.js b/tests/baselines/reference/parserClassDeclaration13.js
index 3e18333b7c..625627fc11 100644
--- a/tests/baselines/reference/parserClassDeclaration13.js
+++ b/tests/baselines/reference/parserClassDeclaration13.js
@@ -8,7 +8,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserClassDeclaration16.js b/tests/baselines/reference/parserClassDeclaration16.js
index ddccb1d445..1ff7dd9695 100644
--- a/tests/baselines/reference/parserClassDeclaration16.js
+++ b/tests/baselines/reference/parserClassDeclaration16.js
@@ -8,7 +8,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserClassDeclaration19.js b/tests/baselines/reference/parserClassDeclaration19.js
index b6fe222c7f..43dcba5c9c 100644
--- a/tests/baselines/reference/parserClassDeclaration19.js
+++ b/tests/baselines/reference/parserClassDeclaration19.js
@@ -8,7 +8,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserClassDeclaration20.js b/tests/baselines/reference/parserClassDeclaration20.js
index 23cbff954e..1d0fc9bad7 100644
--- a/tests/baselines/reference/parserClassDeclaration20.js
+++ b/tests/baselines/reference/parserClassDeclaration20.js
@@ -8,7 +8,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserClassDeclaration21.js b/tests/baselines/reference/parserClassDeclaration21.js
index 61c4d25dbc..e6f87578da 100644
--- a/tests/baselines/reference/parserClassDeclaration21.js
+++ b/tests/baselines/reference/parserClassDeclaration21.js
@@ -8,7 +8,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserClassDeclaration22.js b/tests/baselines/reference/parserClassDeclaration22.js
index 2703e88247..3dda358990 100644
--- a/tests/baselines/reference/parserClassDeclaration22.js
+++ b/tests/baselines/reference/parserClassDeclaration22.js
@@ -8,7 +8,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserES5ComputedPropertyName3.js b/tests/baselines/reference/parserES5ComputedPropertyName3.js
index 2d2867cee5..b4d53fee7d 100644
--- a/tests/baselines/reference/parserES5ComputedPropertyName3.js
+++ b/tests/baselines/reference/parserES5ComputedPropertyName3.js
@@ -5,7 +5,7 @@ var v = { [e]() { } };
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserES5SymbolProperty7.js b/tests/baselines/reference/parserES5SymbolProperty7.js
index f147c0a03a..4e57b94fa1 100644
--- a/tests/baselines/reference/parserES5SymbolProperty7.js
+++ b/tests/baselines/reference/parserES5SymbolProperty7.js
@@ -7,7 +7,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserErrantSemicolonInClass1.js b/tests/baselines/reference/parserErrantSemicolonInClass1.js
index e294b308a3..3a2dbf9a83 100644
--- a/tests/baselines/reference/parserErrantSemicolonInClass1.js
+++ b/tests/baselines/reference/parserErrantSemicolonInClass1.js
@@ -39,7 +39,7 @@ class a {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserErrorRecoveryIfStatement1.js b/tests/baselines/reference/parserErrorRecoveryIfStatement1.js
index 1aada6507a..50193f0b69 100644
--- a/tests/baselines/reference/parserErrorRecoveryIfStatement1.js
+++ b/tests/baselines/reference/parserErrorRecoveryIfStatement1.js
@@ -13,7 +13,7 @@ class Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserErrorRecoveryIfStatement2.js b/tests/baselines/reference/parserErrorRecoveryIfStatement2.js
index c5da613c27..2effdfef38 100644
--- a/tests/baselines/reference/parserErrorRecoveryIfStatement2.js
+++ b/tests/baselines/reference/parserErrorRecoveryIfStatement2.js
@@ -13,7 +13,7 @@ class Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserErrorRecoveryIfStatement3.js b/tests/baselines/reference/parserErrorRecoveryIfStatement3.js
index 01144e18c9..8914759248 100644
--- a/tests/baselines/reference/parserErrorRecoveryIfStatement3.js
+++ b/tests/baselines/reference/parserErrorRecoveryIfStatement3.js
@@ -13,7 +13,7 @@ class Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserErrorRecoveryIfStatement4.js b/tests/baselines/reference/parserErrorRecoveryIfStatement4.js
index 2a9310214d..aac8d07dfb 100644
--- a/tests/baselines/reference/parserErrorRecoveryIfStatement4.js
+++ b/tests/baselines/reference/parserErrorRecoveryIfStatement4.js
@@ -13,7 +13,7 @@ class Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserErrorRecoveryIfStatement5.js b/tests/baselines/reference/parserErrorRecoveryIfStatement5.js
index 1239d992a3..e5dd3a2603 100644
--- a/tests/baselines/reference/parserErrorRecoveryIfStatement5.js
+++ b/tests/baselines/reference/parserErrorRecoveryIfStatement5.js
@@ -13,7 +13,7 @@ class Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserErrorRecoveryIfStatement6.js b/tests/baselines/reference/parserErrorRecoveryIfStatement6.js
index 97888b6a84..873ad38357 100644
--- a/tests/baselines/reference/parserErrorRecoveryIfStatement6.js
+++ b/tests/baselines/reference/parserErrorRecoveryIfStatement6.js
@@ -14,7 +14,7 @@ class Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserErrorRecovery_Block3.js b/tests/baselines/reference/parserErrorRecovery_Block3.js
index a4e068f119..75f9ee14b7 100644
--- a/tests/baselines/reference/parserErrorRecovery_Block3.js
+++ b/tests/baselines/reference/parserErrorRecovery_Block3.js
@@ -10,7 +10,7 @@ class C  {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserErrorRecovery_IncompleteMemberVariable1.js b/tests/baselines/reference/parserErrorRecovery_IncompleteMemberVariable1.js
index faecf0f05a..21079c6e30 100644
--- a/tests/baselines/reference/parserErrorRecovery_IncompleteMemberVariable1.js
+++ b/tests/baselines/reference/parserErrorRecovery_IncompleteMemberVariable1.js
@@ -32,7 +32,7 @@ var dist = p.getDist();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserErrorRecovery_IncompleteMemberVariable2.js b/tests/baselines/reference/parserErrorRecovery_IncompleteMemberVariable2.js
index 1ba61fb182..491145631f 100644
--- a/tests/baselines/reference/parserErrorRecovery_IncompleteMemberVariable2.js
+++ b/tests/baselines/reference/parserErrorRecovery_IncompleteMemberVariable2.js
@@ -32,7 +32,7 @@ var dist = p.getDist();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserMemberFunctionDeclaration1.js b/tests/baselines/reference/parserMemberFunctionDeclaration1.js
index afd699cd0c..aabfa55336 100644
--- a/tests/baselines/reference/parserMemberFunctionDeclaration1.js
+++ b/tests/baselines/reference/parserMemberFunctionDeclaration1.js
@@ -7,7 +7,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserMemberFunctionDeclaration4.js b/tests/baselines/reference/parserMemberFunctionDeclaration4.js
index f2acf1018b..8141c2ea80 100644
--- a/tests/baselines/reference/parserMemberFunctionDeclaration4.js
+++ b/tests/baselines/reference/parserMemberFunctionDeclaration4.js
@@ -7,7 +7,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserMemberFunctionDeclaration5.js b/tests/baselines/reference/parserMemberFunctionDeclaration5.js
index e018e44ad7..784f2aacec 100644
--- a/tests/baselines/reference/parserMemberFunctionDeclaration5.js
+++ b/tests/baselines/reference/parserMemberFunctionDeclaration5.js
@@ -7,7 +7,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserMemberFunctionDeclarationAmbiguities1.js b/tests/baselines/reference/parserMemberFunctionDeclarationAmbiguities1.js
index 424bd93e70..70c152bef9 100644
--- a/tests/baselines/reference/parserMemberFunctionDeclarationAmbiguities1.js
+++ b/tests/baselines/reference/parserMemberFunctionDeclarationAmbiguities1.js
@@ -17,7 +17,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserMissingLambdaOpenBrace1.js b/tests/baselines/reference/parserMissingLambdaOpenBrace1.js
index 36c2e80b9f..642e552029 100644
--- a/tests/baselines/reference/parserMissingLambdaOpenBrace1.js
+++ b/tests/baselines/reference/parserMissingLambdaOpenBrace1.js
@@ -12,7 +12,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserParameterList1.js b/tests/baselines/reference/parserParameterList1.js
index 015e0a4d2c..9209d9ee9d 100644
--- a/tests/baselines/reference/parserParameterList1.js
+++ b/tests/baselines/reference/parserParameterList1.js
@@ -7,7 +7,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserParameterList10.js b/tests/baselines/reference/parserParameterList10.js
index a44f1fa5e3..25d6809cd4 100644
--- a/tests/baselines/reference/parserParameterList10.js
+++ b/tests/baselines/reference/parserParameterList10.js
@@ -7,7 +7,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserParameterList16.js b/tests/baselines/reference/parserParameterList16.js
index c4e156c17f..eb53cd39b7 100644
--- a/tests/baselines/reference/parserParameterList16.js
+++ b/tests/baselines/reference/parserParameterList16.js
@@ -8,7 +8,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserParameterList2.js b/tests/baselines/reference/parserParameterList2.js
index 73351eac79..58817cdc38 100644
--- a/tests/baselines/reference/parserParameterList2.js
+++ b/tests/baselines/reference/parserParameterList2.js
@@ -7,7 +7,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserParameterList3.js b/tests/baselines/reference/parserParameterList3.js
index 0ac53eeffe..2c25032054 100644
--- a/tests/baselines/reference/parserParameterList3.js
+++ b/tests/baselines/reference/parserParameterList3.js
@@ -7,7 +7,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserParameterList9.js b/tests/baselines/reference/parserParameterList9.js
index 8e1e92f8ce..24391faaf0 100644
--- a/tests/baselines/reference/parserParameterList9.js
+++ b/tests/baselines/reference/parserParameterList9.js
@@ -7,7 +7,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserRealSource1.js b/tests/baselines/reference/parserRealSource1.js
index 3bd1e92683..d03d859c31 100644
--- a/tests/baselines/reference/parserRealSource1.js
+++ b/tests/baselines/reference/parserRealSource1.js
@@ -160,7 +160,7 @@ module TypeScript {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserRealSource10.js b/tests/baselines/reference/parserRealSource10.js
index c7c4fd5eff..a6b7cc9874 100644
--- a/tests/baselines/reference/parserRealSource10.js
+++ b/tests/baselines/reference/parserRealSource10.js
@@ -461,7 +461,7 @@ module TypeScript {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserRealSource11.js b/tests/baselines/reference/parserRealSource11.js
index f0afc72c13..b85d29c4f0 100644
--- a/tests/baselines/reference/parserRealSource11.js
+++ b/tests/baselines/reference/parserRealSource11.js
@@ -2380,7 +2380,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserRealSource12.js b/tests/baselines/reference/parserRealSource12.js
index de2f0bcc4a..bae2689f00 100644
--- a/tests/baselines/reference/parserRealSource12.js
+++ b/tests/baselines/reference/parserRealSource12.js
@@ -536,7 +536,7 @@ module TypeScript {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserRealSource14.js b/tests/baselines/reference/parserRealSource14.js
index 86786c8f67..159ac51dca 100644
--- a/tests/baselines/reference/parserRealSource14.js
+++ b/tests/baselines/reference/parserRealSource14.js
@@ -581,7 +581,7 @@ module TypeScript {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserRealSource4.js b/tests/baselines/reference/parserRealSource4.js
index 1b2f8eb5fa..3efc6e6fbf 100644
--- a/tests/baselines/reference/parserRealSource4.js
+++ b/tests/baselines/reference/parserRealSource4.js
@@ -301,7 +301,7 @@ module TypeScript {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserRealSource5.js b/tests/baselines/reference/parserRealSource5.js
index a08f8ccb73..cb496568f7 100644
--- a/tests/baselines/reference/parserRealSource5.js
+++ b/tests/baselines/reference/parserRealSource5.js
@@ -72,7 +72,7 @@ module TypeScript {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserRealSource6.js b/tests/baselines/reference/parserRealSource6.js
index cce9fd32aa..5348bbb7c2 100644
--- a/tests/baselines/reference/parserRealSource6.js
+++ b/tests/baselines/reference/parserRealSource6.js
@@ -227,7 +227,7 @@ module TypeScript {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserRealSource8.js b/tests/baselines/reference/parserRealSource8.js
index b813855eeb..8d2d47ed7a 100644
--- a/tests/baselines/reference/parserRealSource8.js
+++ b/tests/baselines/reference/parserRealSource8.js
@@ -472,7 +472,7 @@ module TypeScript {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserRealSource9.js b/tests/baselines/reference/parserRealSource9.js
index 7619c17c4b..f5f5914619 100644
--- a/tests/baselines/reference/parserRealSource9.js
+++ b/tests/baselines/reference/parserRealSource9.js
@@ -215,7 +215,7 @@ module TypeScript {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserSuperExpression1.js b/tests/baselines/reference/parserSuperExpression1.js
index 74bfa264c5..78eb8b08ff 100644
--- a/tests/baselines/reference/parserSuperExpression1.js
+++ b/tests/baselines/reference/parserSuperExpression1.js
@@ -17,7 +17,7 @@ module M1.M2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserSuperExpression2.js b/tests/baselines/reference/parserSuperExpression2.js
index 5b3349e98c..87384d1436 100644
--- a/tests/baselines/reference/parserSuperExpression2.js
+++ b/tests/baselines/reference/parserSuperExpression2.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserSuperExpression3.js b/tests/baselines/reference/parserSuperExpression3.js
index e994dc9be0..6608813394 100644
--- a/tests/baselines/reference/parserSuperExpression3.js
+++ b/tests/baselines/reference/parserSuperExpression3.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserSuperExpression4.js b/tests/baselines/reference/parserSuperExpression4.js
index 5ecfd475fa..61c41d7cf2 100644
--- a/tests/baselines/reference/parserSuperExpression4.js
+++ b/tests/baselines/reference/parserSuperExpression4.js
@@ -17,7 +17,7 @@ module M1.M2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserharness.js b/tests/baselines/reference/parserharness.js
index 09be994d88..14870d08e3 100644
--- a/tests/baselines/reference/parserharness.js
+++ b/tests/baselines/reference/parserharness.js
@@ -2099,7 +2099,7 @@ module Harness {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parserindenter.js b/tests/baselines/reference/parserindenter.js
index 5fc4aaca9a..6990d09c5b 100644
--- a/tests/baselines/reference/parserindenter.js
+++ b/tests/baselines/reference/parserindenter.js
@@ -759,7 +759,7 @@ module Formatting {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/parsingClassRecoversWhenHittingUnexpectedSemicolon.js b/tests/baselines/reference/parsingClassRecoversWhenHittingUnexpectedSemicolon.js
index 96cbda6315..a165b12780 100644
--- a/tests/baselines/reference/parsingClassRecoversWhenHittingUnexpectedSemicolon.js
+++ b/tests/baselines/reference/parsingClassRecoversWhenHittingUnexpectedSemicolon.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/primitiveConstraints2.js b/tests/baselines/reference/primitiveConstraints2.js
index d333bd95b9..4da71a5dc3 100644
--- a/tests/baselines/reference/primitiveConstraints2.js
+++ b/tests/baselines/reference/primitiveConstraints2.js
@@ -13,7 +13,7 @@ x.bar2<string>(2, ""); // should error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/primitiveMembers.js b/tests/baselines/reference/primitiveMembers.js
index ec9c66e35b..f4bb391aab 100644
--- a/tests/baselines/reference/primitiveMembers.js
+++ b/tests/baselines/reference/primitiveMembers.js
@@ -35,7 +35,7 @@ class foo extends baz { public bar(){ return undefined}; }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyClass.js b/tests/baselines/reference/privacyClass.js
index 5f5d2e807d..aa4ccc268d 100644
--- a/tests/baselines/reference/privacyClass.js
+++ b/tests/baselines/reference/privacyClass.js
@@ -132,7 +132,7 @@ export class glo_C12_public extends glo_c_private implements  glo_i_private, glo
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyClassExtendsClauseDeclFile.js b/tests/baselines/reference/privacyClassExtendsClauseDeclFile.js
index 10a5d57b9e..0097e54245 100644
--- a/tests/baselines/reference/privacyClassExtendsClauseDeclFile.js
+++ b/tests/baselines/reference/privacyClassExtendsClauseDeclFile.js
@@ -101,7 +101,7 @@ class publicClassExtendingPublicClassInGlobal extends publicClassInGlobal {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -310,7 +310,7 @@ exports.publicClassExtendingFromPrivateModuleClass = publicClassExtendingFromPri
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyFunc.js b/tests/baselines/reference/privacyFunc.js
index 844c9747bb..81878175c5 100644
--- a/tests/baselines/reference/privacyFunc.js
+++ b/tests/baselines/reference/privacyFunc.js
@@ -232,7 +232,7 @@ function f10_public(): C6_public {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyFunctionCannotNameParameterTypeDeclFile.js b/tests/baselines/reference/privacyFunctionCannotNameParameterTypeDeclFile.js
index 03a235e954..719cab13c7 100644
--- a/tests/baselines/reference/privacyFunctionCannotNameParameterTypeDeclFile.js
+++ b/tests/baselines/reference/privacyFunctionCannotNameParameterTypeDeclFile.js
@@ -210,7 +210,7 @@ exports.createExportedWidget4 = createExportedWidget4;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyFunctionCannotNameReturnTypeDeclFile.js b/tests/baselines/reference/privacyFunctionCannotNameReturnTypeDeclFile.js
index a015f0cb3d..02bc79bae7 100644
--- a/tests/baselines/reference/privacyFunctionCannotNameReturnTypeDeclFile.js
+++ b/tests/baselines/reference/privacyFunctionCannotNameReturnTypeDeclFile.js
@@ -217,7 +217,7 @@ exports.createExportedWidget4 = createExportedWidget4;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyFunctionParameterDeclFile.js b/tests/baselines/reference/privacyFunctionParameterDeclFile.js
index 92ae706658..c30bf2f575 100644
--- a/tests/baselines/reference/privacyFunctionParameterDeclFile.js
+++ b/tests/baselines/reference/privacyFunctionParameterDeclFile.js
@@ -690,7 +690,7 @@ module publicModuleInGlobal {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -1063,7 +1063,7 @@ var privateModule;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyFunctionReturnTypeDeclFile.js b/tests/baselines/reference/privacyFunctionReturnTypeDeclFile.js
index 70d2456035..e2ee7046c1 100644
--- a/tests/baselines/reference/privacyFunctionReturnTypeDeclFile.js
+++ b/tests/baselines/reference/privacyFunctionReturnTypeDeclFile.js
@@ -1197,7 +1197,7 @@ module publicModuleInGlobal {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -1855,7 +1855,7 @@ var privateModule;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyGetter.js b/tests/baselines/reference/privacyGetter.js
index 0ea2cb2aea..c8f85cd2c0 100644
--- a/tests/baselines/reference/privacyGetter.js
+++ b/tests/baselines/reference/privacyGetter.js
@@ -211,7 +211,7 @@ class C8_private {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyGloClass.js b/tests/baselines/reference/privacyGloClass.js
index 1d78afc065..7953b7e96d 100644
--- a/tests/baselines/reference/privacyGloClass.js
+++ b/tests/baselines/reference/privacyGloClass.js
@@ -64,7 +64,7 @@ class glo_C11_public extends glo_c_public implements glo_i_public {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyGloFunc.js b/tests/baselines/reference/privacyGloFunc.js
index 85eef926ac..efef6cff8e 100644
--- a/tests/baselines/reference/privacyGloFunc.js
+++ b/tests/baselines/reference/privacyGloFunc.js
@@ -534,7 +534,7 @@ export function f12_public(): C5_private { //error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyGloGetter.js b/tests/baselines/reference/privacyGloGetter.js
index da13e682ed..100ec3b72a 100644
--- a/tests/baselines/reference/privacyGloGetter.js
+++ b/tests/baselines/reference/privacyGloGetter.js
@@ -92,7 +92,7 @@ class C7_public {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyGloInterface.js b/tests/baselines/reference/privacyGloInterface.js
index 214e1447b4..439df1e4c5 100644
--- a/tests/baselines/reference/privacyGloInterface.js
+++ b/tests/baselines/reference/privacyGloInterface.js
@@ -123,7 +123,7 @@ interface glo_C3_public extends glo_i_public {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyGloVar.js b/tests/baselines/reference/privacyGloVar.js
index 56cb7bf091..dfcdebdfc8 100644
--- a/tests/baselines/reference/privacyGloVar.js
+++ b/tests/baselines/reference/privacyGloVar.js
@@ -84,7 +84,7 @@ var glo_v22_public: glo_C1_public = new glo_C1_public();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyInterface.js b/tests/baselines/reference/privacyInterface.js
index 0f5477644f..7b330fc64f 100644
--- a/tests/baselines/reference/privacyInterface.js
+++ b/tests/baselines/reference/privacyInterface.js
@@ -269,7 +269,7 @@ export interface glo_C6_public extends  glo_i_private, glo_i_public {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyTypeParameterOfFunction.js b/tests/baselines/reference/privacyTypeParameterOfFunction.js
index 0cf0c13086..2b8a041d77 100644
--- a/tests/baselines/reference/privacyTypeParameterOfFunction.js
+++ b/tests/baselines/reference/privacyTypeParameterOfFunction.js
@@ -137,7 +137,7 @@ function privateFunctionWithPublicTypeParametersWithoutExtends<T>() {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyTypeParameterOfFunctionDeclFile.js b/tests/baselines/reference/privacyTypeParameterOfFunctionDeclFile.js
index 7763611c04..b729e03d69 100644
--- a/tests/baselines/reference/privacyTypeParameterOfFunctionDeclFile.js
+++ b/tests/baselines/reference/privacyTypeParameterOfFunctionDeclFile.js
@@ -443,7 +443,7 @@ module privateModule {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyTypeParametersOfClass.js b/tests/baselines/reference/privacyTypeParametersOfClass.js
index d0563c18bc..56bb4bb125 100644
--- a/tests/baselines/reference/privacyTypeParametersOfClass.js
+++ b/tests/baselines/reference/privacyTypeParametersOfClass.js
@@ -48,7 +48,7 @@ class privateClassWithPublicTypeParametersWithoutExtends<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyTypeParametersOfClassDeclFile.js b/tests/baselines/reference/privacyTypeParametersOfClassDeclFile.js
index cd19ff1a9b..329c48c309 100644
--- a/tests/baselines/reference/privacyTypeParametersOfClassDeclFile.js
+++ b/tests/baselines/reference/privacyTypeParametersOfClassDeclFile.js
@@ -159,7 +159,7 @@ module privateModule {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privacyVar.js b/tests/baselines/reference/privacyVar.js
index 08ff572d56..aa8ff4eb00 100644
--- a/tests/baselines/reference/privacyVar.js
+++ b/tests/baselines/reference/privacyVar.js
@@ -179,7 +179,7 @@ export var glo_v24_public: glo_C2_private = new glo_C2_private(); // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privateAccessInSubclass1.js b/tests/baselines/reference/privateAccessInSubclass1.js
index 674400cefc..d817b27178 100644
--- a/tests/baselines/reference/privateAccessInSubclass1.js
+++ b/tests/baselines/reference/privateAccessInSubclass1.js
@@ -23,7 +23,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privateClassPropertyAccessibleWithinClass.js b/tests/baselines/reference/privateClassPropertyAccessibleWithinClass.js
index f0405b6e0f..c716fb7035 100644
--- a/tests/baselines/reference/privateClassPropertyAccessibleWithinClass.js
+++ b/tests/baselines/reference/privateClassPropertyAccessibleWithinClass.js
@@ -36,7 +36,7 @@ class C2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privateClassPropertyAccessibleWithinNestedClass.js b/tests/baselines/reference/privateClassPropertyAccessibleWithinNestedClass.js
index ef7ca929f7..6cb073e7c7 100644
--- a/tests/baselines/reference/privateClassPropertyAccessibleWithinNestedClass.js
+++ b/tests/baselines/reference/privateClassPropertyAccessibleWithinNestedClass.js
@@ -42,7 +42,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privateInstanceMemberAccessibility.js b/tests/baselines/reference/privateInstanceMemberAccessibility.js
index c596a965c9..29c0218141 100644
--- a/tests/baselines/reference/privateInstanceMemberAccessibility.js
+++ b/tests/baselines/reference/privateInstanceMemberAccessibility.js
@@ -27,7 +27,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privateInstanceVisibility.js b/tests/baselines/reference/privateInstanceVisibility.js
index f0d0b7781f..88b5d4079e 100644
--- a/tests/baselines/reference/privateInstanceVisibility.js
+++ b/tests/baselines/reference/privateInstanceVisibility.js
@@ -42,7 +42,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privateProtectedMembersAreNotAccessibleDestructuring.js b/tests/baselines/reference/privateProtectedMembersAreNotAccessibleDestructuring.js
index 052870699c..dd25d51d4d 100644
--- a/tests/baselines/reference/privateProtectedMembersAreNotAccessibleDestructuring.js
+++ b/tests/baselines/reference/privateProtectedMembersAreNotAccessibleDestructuring.js
@@ -25,7 +25,7 @@ let { priv: a, prot: b, privateMethod: f } = k; // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privateVisibility.js b/tests/baselines/reference/privateVisibility.js
index c6f6b183e1..173b8a2546 100644
--- a/tests/baselines/reference/privateVisibility.js
+++ b/tests/baselines/reference/privateVisibility.js
@@ -30,7 +30,7 @@ c.priv; // should not work
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/privateVisibles.js b/tests/baselines/reference/privateVisibles.js
index 3eb2f2a940..7f14e468d1 100644
--- a/tests/baselines/reference/privateVisibles.js
+++ b/tests/baselines/reference/privateVisibles.js
@@ -13,7 +13,7 @@ class Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/project/quotesInFileAndDirectoryNames/amd/li'b/class'A.js b/tests/baselines/reference/project/quotesInFileAndDirectoryNames/amd/li'b/class'A.js
index c8c28c1b17..ef151d151e 100644
--- a/tests/baselines/reference/project/quotesInFileAndDirectoryNames/amd/li'b/class'A.js
+++ b/tests/baselines/reference/project/quotesInFileAndDirectoryNames/amd/li'b/class'A.js
@@ -1,7 +1,7 @@
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/project/quotesInFileAndDirectoryNames/node/li'b/class'A.js b/tests/baselines/reference/project/quotesInFileAndDirectoryNames/node/li'b/class'A.js
index c8c28c1b17..ef151d151e 100644
--- a/tests/baselines/reference/project/quotesInFileAndDirectoryNames/node/li'b/class'A.js
+++ b/tests/baselines/reference/project/quotesInFileAndDirectoryNames/node/li'b/class'A.js
@@ -1,7 +1,7 @@
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/amd/fs.js b/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/amd/fs.js
index 0e02687758..263db881c0 100644
--- a/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/amd/fs.js
+++ b/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/amd/fs.js
@@ -1,7 +1,7 @@
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/node/fs.js b/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/node/fs.js
index 0862e79ba4..a9e534c189 100644
--- a/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/node/fs.js
+++ b/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/node/fs.js
@@ -2,7 +2,7 @@
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/promiseChaining.js b/tests/baselines/reference/promiseChaining.js
index d6aad37fac..e2d76fcb2d 100644
--- a/tests/baselines/reference/promiseChaining.js
+++ b/tests/baselines/reference/promiseChaining.js
@@ -15,7 +15,7 @@ class Chain<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/promiseChaining1.js b/tests/baselines/reference/promiseChaining1.js
index 6c180a9edb..7e2be8631a 100644
--- a/tests/baselines/reference/promiseChaining1.js
+++ b/tests/baselines/reference/promiseChaining1.js
@@ -14,7 +14,7 @@ class Chain2<T extends { length: number }> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/promiseChaining2.js b/tests/baselines/reference/promiseChaining2.js
index 8abf3ffb59..aebe5e2be2 100644
--- a/tests/baselines/reference/promiseChaining2.js
+++ b/tests/baselines/reference/promiseChaining2.js
@@ -14,7 +14,7 @@ class Chain2<T extends { length: number }> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints.js b/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints.js
index f2de7ef0bd..4ab3d6dc06 100644
--- a/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints.js
+++ b/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints.js
@@ -40,7 +40,7 @@ var r4 = b.foo(new Date());
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints2.js b/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints2.js
index 906f29b5ef..15b7b506f8 100644
--- a/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints2.js
+++ b/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints2.js
@@ -86,7 +86,7 @@ var r4 = b.foo(aB, aB); // no inferences for T so constraint isn't satisfied, er
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints3.js b/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints3.js
index 81adda9a81..f394bc1321 100644
--- a/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints3.js
+++ b/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints3.js
@@ -61,7 +61,7 @@ var r4 = b.foo(new B()); // valid call to an invalid function
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints4.js b/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints4.js
index b3ee2cdb20..ff68bdcc57 100644
--- a/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints4.js
+++ b/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints4.js
@@ -36,7 +36,7 @@ var r4 = b.foo(new Date());
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints5.js b/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints5.js
index ed11e8ad89..5ef2f73aa5 100644
--- a/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints5.js
+++ b/tests/baselines/reference/propertyAccessOnTypeParameterWithConstraints5.js
@@ -48,7 +48,7 @@ var r4 = b.foo(new B()); // error after constraints above made illegal, doesn't
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/propertyAccessOnTypeParameterWithoutConstraints.js b/tests/baselines/reference/propertyAccessOnTypeParameterWithoutConstraints.js
index 48b4bb5721..2240879897 100644
--- a/tests/baselines/reference/propertyAccessOnTypeParameterWithoutConstraints.js
+++ b/tests/baselines/reference/propertyAccessOnTypeParameterWithoutConstraints.js
@@ -35,7 +35,7 @@ var r4 = b.foo(1);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/propertyAndFunctionWithSameName.js b/tests/baselines/reference/propertyAndFunctionWithSameName.js
index c1be699bfb..7c14d4de2d 100644
--- a/tests/baselines/reference/propertyAndFunctionWithSameName.js
+++ b/tests/baselines/reference/propertyAndFunctionWithSameName.js
@@ -15,7 +15,7 @@ class D {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/propertyOrdering.js b/tests/baselines/reference/propertyOrdering.js
index 8a04f54c9e..ab3df5440b 100644
--- a/tests/baselines/reference/propertyOrdering.js
+++ b/tests/baselines/reference/propertyOrdering.js
@@ -27,7 +27,7 @@ class Bar {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/propertyOrdering2.js b/tests/baselines/reference/propertyOrdering2.js
index 333341e6fb..2cb65947b7 100644
--- a/tests/baselines/reference/propertyOrdering2.js
+++ b/tests/baselines/reference/propertyOrdering2.js
@@ -12,7 +12,7 @@ class Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/protectedClassPropertyAccessibleWithinClass.js b/tests/baselines/reference/protectedClassPropertyAccessibleWithinClass.js
index ec481e6366..13a152c49b 100644
--- a/tests/baselines/reference/protectedClassPropertyAccessibleWithinClass.js
+++ b/tests/baselines/reference/protectedClassPropertyAccessibleWithinClass.js
@@ -36,7 +36,7 @@ class C2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/protectedClassPropertyAccessibleWithinNestedClass.js b/tests/baselines/reference/protectedClassPropertyAccessibleWithinNestedClass.js
index 59fe80e8d4..d52c9a2dc8 100644
--- a/tests/baselines/reference/protectedClassPropertyAccessibleWithinNestedClass.js
+++ b/tests/baselines/reference/protectedClassPropertyAccessibleWithinNestedClass.js
@@ -42,7 +42,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/protectedClassPropertyAccessibleWithinNestedSubclass.js b/tests/baselines/reference/protectedClassPropertyAccessibleWithinNestedSubclass.js
index ac96ed53b7..3ee5ffce96 100644
--- a/tests/baselines/reference/protectedClassPropertyAccessibleWithinNestedSubclass.js
+++ b/tests/baselines/reference/protectedClassPropertyAccessibleWithinNestedSubclass.js
@@ -51,7 +51,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/protectedClassPropertyAccessibleWithinNestedSubclass1.js b/tests/baselines/reference/protectedClassPropertyAccessibleWithinNestedSubclass1.js
index 6ae95d3b88..d3574e462e 100644
--- a/tests/baselines/reference/protectedClassPropertyAccessibleWithinNestedSubclass1.js
+++ b/tests/baselines/reference/protectedClassPropertyAccessibleWithinNestedSubclass1.js
@@ -118,7 +118,7 @@ d4.x;                   // Error, neither within their declaring class nor class
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/protectedClassPropertyAccessibleWithinSubclass.js b/tests/baselines/reference/protectedClassPropertyAccessibleWithinSubclass.js
index f6fcd987c9..1c544215a6 100644
--- a/tests/baselines/reference/protectedClassPropertyAccessibleWithinSubclass.js
+++ b/tests/baselines/reference/protectedClassPropertyAccessibleWithinSubclass.js
@@ -34,7 +34,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/protectedClassPropertyAccessibleWithinSubclass2.js b/tests/baselines/reference/protectedClassPropertyAccessibleWithinSubclass2.js
index 257adeee03..30afff3c5d 100644
--- a/tests/baselines/reference/protectedClassPropertyAccessibleWithinSubclass2.js
+++ b/tests/baselines/reference/protectedClassPropertyAccessibleWithinSubclass2.js
@@ -98,7 +98,7 @@ d4.x;                   // Error, neither within their declaring class nor class
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/protectedClassPropertyAccessibleWithinSubclass3.js b/tests/baselines/reference/protectedClassPropertyAccessibleWithinSubclass3.js
index f4399126da..b0461be3ff 100644
--- a/tests/baselines/reference/protectedClassPropertyAccessibleWithinSubclass3.js
+++ b/tests/baselines/reference/protectedClassPropertyAccessibleWithinSubclass3.js
@@ -17,7 +17,7 @@ class Derived extends Base {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/protectedInstanceMemberAccessibility.js b/tests/baselines/reference/protectedInstanceMemberAccessibility.js
index 9a96d5a4d9..68809dceca 100644
--- a/tests/baselines/reference/protectedInstanceMemberAccessibility.js
+++ b/tests/baselines/reference/protectedInstanceMemberAccessibility.js
@@ -48,7 +48,7 @@ class C extends A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/protectedMembers.js b/tests/baselines/reference/protectedMembers.js
index 45e12fe8dc..d3f313f4d8 100644
--- a/tests/baselines/reference/protectedMembers.js
+++ b/tests/baselines/reference/protectedMembers.js
@@ -119,7 +119,7 @@ class B3 extends A3 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/quotedFunctionName1.js b/tests/baselines/reference/quotedFunctionName1.js
index 357a64fb3b..18cb64d89e 100644
--- a/tests/baselines/reference/quotedFunctionName1.js
+++ b/tests/baselines/reference/quotedFunctionName1.js
@@ -7,7 +7,7 @@ class Test1 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/quotedPropertyName3.js b/tests/baselines/reference/quotedPropertyName3.js
index 91d0345b8f..e31feb6c89 100644
--- a/tests/baselines/reference/quotedPropertyName3.js
+++ b/tests/baselines/reference/quotedPropertyName3.js
@@ -11,7 +11,7 @@ class Test {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/readonlyInNonPropertyParameters.js b/tests/baselines/reference/readonlyInNonPropertyParameters.js
index 00b9ecc13b..51dd79c3df 100644
--- a/tests/baselines/reference/readonlyInNonPropertyParameters.js
+++ b/tests/baselines/reference/readonlyInNonPropertyParameters.js
@@ -12,7 +12,7 @@ class X {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/readonlyMembers.js b/tests/baselines/reference/readonlyMembers.js
index fcca7be8af..08d7ddc322 100644
--- a/tests/baselines/reference/readonlyMembers.js
+++ b/tests/baselines/reference/readonlyMembers.js
@@ -69,7 +69,7 @@ yy["foo"] = "abc";
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/recursiveBaseConstructorCreation1.js b/tests/baselines/reference/recursiveBaseConstructorCreation1.js
index 7ce9933fd1..4c1b00d852 100644
--- a/tests/baselines/reference/recursiveBaseConstructorCreation1.js
+++ b/tests/baselines/reference/recursiveBaseConstructorCreation1.js
@@ -10,7 +10,7 @@ var x = new C2(); // Valid
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/recursiveClassReferenceTest.js b/tests/baselines/reference/recursiveClassReferenceTest.js
index bd0ceccac9..1c7539b1b9 100644
--- a/tests/baselines/reference/recursiveClassReferenceTest.js
+++ b/tests/baselines/reference/recursiveClassReferenceTest.js
@@ -108,7 +108,7 @@ module Sample.Thing.Languages.PlainText {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/recursiveClassReferenceTest.sourcemap.txt b/tests/baselines/reference/recursiveClassReferenceTest.sourcemap.txt
index cb45f627c4..d3526f5ae0 100644
--- a/tests/baselines/reference/recursiveClassReferenceTest.sourcemap.txt
+++ b/tests/baselines/reference/recursiveClassReferenceTest.sourcemap.txt
@@ -29,7 +29,7 @@ sourceFile:recursiveClassReferenceTest.ts
 >>>var __names = (this && this.__names) || (function() {
 >>>    var name = Object.defineProperty ? (function(proto, name) {
 >>>        Object.defineProperty(proto[name], 'name', { 
->>>            value: name, configurable: true, writable: false, enumerable: false
+>>>            value: name, configurable: true
 >>>        });
 >>>    }) : (function(proto, name) {
 >>>        proto[name].name = name;
diff --git a/tests/baselines/reference/recursiveComplicatedClasses.js b/tests/baselines/reference/recursiveComplicatedClasses.js
index dae5d6ac3c..b3104485ea 100644
--- a/tests/baselines/reference/recursiveComplicatedClasses.js
+++ b/tests/baselines/reference/recursiveComplicatedClasses.js
@@ -28,7 +28,7 @@ class TypeSymbol extends InferenceSymbol {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/recursiveInheritance3.js b/tests/baselines/reference/recursiveInheritance3.js
index 19df835af8..e26f60b833 100644
--- a/tests/baselines/reference/recursiveInheritance3.js
+++ b/tests/baselines/reference/recursiveInheritance3.js
@@ -12,7 +12,7 @@ interface I extends C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/requireEmitSemicolon.js b/tests/baselines/reference/requireEmitSemicolon.js
index c76de6835a..472bf81689 100644
--- a/tests/baselines/reference/requireEmitSemicolon.js
+++ b/tests/baselines/reference/requireEmitSemicolon.js
@@ -37,7 +37,7 @@ define(["require", "exports"], function (require, exports) {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/requiredInitializedParameter2.js b/tests/baselines/reference/requiredInitializedParameter2.js
index 060b6781ba..513ac59899 100644
--- a/tests/baselines/reference/requiredInitializedParameter2.js
+++ b/tests/baselines/reference/requiredInitializedParameter2.js
@@ -11,7 +11,7 @@ class C1 implements I1 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/requiredInitializedParameter3.js b/tests/baselines/reference/requiredInitializedParameter3.js
index 839426cf1f..88b80a5235 100644
--- a/tests/baselines/reference/requiredInitializedParameter3.js
+++ b/tests/baselines/reference/requiredInitializedParameter3.js
@@ -11,7 +11,7 @@ class C1 implements I1 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/requiredInitializedParameter4.js b/tests/baselines/reference/requiredInitializedParameter4.js
index 807adff10a..25a399f39a 100644
--- a/tests/baselines/reference/requiredInitializedParameter4.js
+++ b/tests/baselines/reference/requiredInitializedParameter4.js
@@ -7,7 +7,7 @@ class C1 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/resolvingClassDeclarationWhenInBaseTypeResolution.js b/tests/baselines/reference/resolvingClassDeclarationWhenInBaseTypeResolution.js
index df4b206c61..8e46584b97 100644
--- a/tests/baselines/reference/resolvingClassDeclarationWhenInBaseTypeResolution.js
+++ b/tests/baselines/reference/resolvingClassDeclarationWhenInBaseTypeResolution.js
@@ -1033,7 +1033,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/restParameterAssignmentCompatibility.js b/tests/baselines/reference/restParameterAssignmentCompatibility.js
index 95a9fa8a7b..dcd705678e 100644
--- a/tests/baselines/reference/restParameterAssignmentCompatibility.js
+++ b/tests/baselines/reference/restParameterAssignmentCompatibility.js
@@ -30,7 +30,7 @@ t1 = s; // Similar to above, but optionality does not matter here.
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/restParameterWithoutAnnotationIsAnyArray.js b/tests/baselines/reference/restParameterWithoutAnnotationIsAnyArray.js
index 36abda46dd..5f8268c8f6 100644
--- a/tests/baselines/reference/restParameterWithoutAnnotationIsAnyArray.js
+++ b/tests/baselines/reference/restParameterWithoutAnnotationIsAnyArray.js
@@ -31,7 +31,7 @@ var b = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/restParametersOfNonArrayTypes.js b/tests/baselines/reference/restParametersOfNonArrayTypes.js
index 03f4d55154..b42f27550d 100644
--- a/tests/baselines/reference/restParametersOfNonArrayTypes.js
+++ b/tests/baselines/reference/restParametersOfNonArrayTypes.js
@@ -30,7 +30,7 @@ var b = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/restParametersOfNonArrayTypes2.js b/tests/baselines/reference/restParametersOfNonArrayTypes2.js
index 2f3a6addad..d960080b34 100644
--- a/tests/baselines/reference/restParametersOfNonArrayTypes2.js
+++ b/tests/baselines/reference/restParametersOfNonArrayTypes2.js
@@ -62,7 +62,7 @@ var b2 = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/restParametersWithArrayTypeAnnotations.js b/tests/baselines/reference/restParametersWithArrayTypeAnnotations.js
index 0b0b7c262c..50e2af38b7 100644
--- a/tests/baselines/reference/restParametersWithArrayTypeAnnotations.js
+++ b/tests/baselines/reference/restParametersWithArrayTypeAnnotations.js
@@ -57,7 +57,7 @@ var b2 = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/returnInConstructor1.js b/tests/baselines/reference/returnInConstructor1.js
index 325034d21d..3f28970149 100644
--- a/tests/baselines/reference/returnInConstructor1.js
+++ b/tests/baselines/reference/returnInConstructor1.js
@@ -70,7 +70,7 @@ class I extends G {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/returnStatements.js b/tests/baselines/reference/returnStatements.js
index a89ca53311..8ba31780bd 100644
--- a/tests/baselines/reference/returnStatements.js
+++ b/tests/baselines/reference/returnStatements.js
@@ -28,7 +28,7 @@ function fn13(): C { return null; }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/returnTypeTypeArguments.js b/tests/baselines/reference/returnTypeTypeArguments.js
index dec5aad88b..7482726a32 100644
--- a/tests/baselines/reference/returnTypeTypeArguments.js
+++ b/tests/baselines/reference/returnTypeTypeArguments.js
@@ -80,7 +80,7 @@ declare var a: {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/scopeCheckExtendedClassInsidePublicMethod2.js b/tests/baselines/reference/scopeCheckExtendedClassInsidePublicMethod2.js
index 047c14bbf1..200ac03fd8 100644
--- a/tests/baselines/reference/scopeCheckExtendedClassInsidePublicMethod2.js
+++ b/tests/baselines/reference/scopeCheckExtendedClassInsidePublicMethod2.js
@@ -22,7 +22,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/scopeCheckInsidePublicMethod1.js b/tests/baselines/reference/scopeCheckInsidePublicMethod1.js
index c4b6a5606f..755a0c918a 100644
--- a/tests/baselines/reference/scopeCheckInsidePublicMethod1.js
+++ b/tests/baselines/reference/scopeCheckInsidePublicMethod1.js
@@ -10,7 +10,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/scopeResolutionIdentifiers.js b/tests/baselines/reference/scopeResolutionIdentifiers.js
index f5315525c7..7fe9c71594 100644
--- a/tests/baselines/reference/scopeResolutionIdentifiers.js
+++ b/tests/baselines/reference/scopeResolutionIdentifiers.js
@@ -43,7 +43,7 @@ module M3 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/selfInCallback.js b/tests/baselines/reference/selfInCallback.js
index 0636775eff..82d83ab3b1 100644
--- a/tests/baselines/reference/selfInCallback.js
+++ b/tests/baselines/reference/selfInCallback.js
@@ -11,7 +11,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/selfInLambdas.js b/tests/baselines/reference/selfInLambdas.js
index e114cb5829..deb3d4bf58 100644
--- a/tests/baselines/reference/selfInLambdas.js
+++ b/tests/baselines/reference/selfInLambdas.js
@@ -50,7 +50,7 @@ class X {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/selfReferencesInFunctionParameters.js b/tests/baselines/reference/selfReferencesInFunctionParameters.js
index e5208d8907..7e820a9843 100644
--- a/tests/baselines/reference/selfReferencesInFunctionParameters.js
+++ b/tests/baselines/reference/selfReferencesInFunctionParameters.js
@@ -17,7 +17,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/shadowPrivateMembers.js b/tests/baselines/reference/shadowPrivateMembers.js
index 8d888128a4..2ce217a4f8 100644
--- a/tests/baselines/reference/shadowPrivateMembers.js
+++ b/tests/baselines/reference/shadowPrivateMembers.js
@@ -7,7 +7,7 @@ class derived extends base { private n() {} }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/sigantureIsSubTypeIfTheyAreIdentical.js b/tests/baselines/reference/sigantureIsSubTypeIfTheyAreIdentical.js
index cd15451c7d..3f042bfd4c 100644
--- a/tests/baselines/reference/sigantureIsSubTypeIfTheyAreIdentical.js
+++ b/tests/baselines/reference/sigantureIsSubTypeIfTheyAreIdentical.js
@@ -12,7 +12,7 @@ class CacheService implements ICache { // Should not error that property type of
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/signatureInstantiationWithRecursiveConstraints.js b/tests/baselines/reference/signatureInstantiationWithRecursiveConstraints.js
index 77abf5d441..755c6fdb76 100644
--- a/tests/baselines/reference/signatureInstantiationWithRecursiveConstraints.js
+++ b/tests/baselines/reference/signatureInstantiationWithRecursiveConstraints.js
@@ -18,7 +18,7 @@ const myVar: Foo = new Bar();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/sourceMap-Comments.js b/tests/baselines/reference/sourceMap-Comments.js
index 3bb266598f..9b62a2ae76 100644
--- a/tests/baselines/reference/sourceMap-Comments.js
+++ b/tests/baselines/reference/sourceMap-Comments.js
@@ -24,7 +24,7 @@ module sas.tools {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/sourceMap-Comments.sourcemap.txt b/tests/baselines/reference/sourceMap-Comments.sourcemap.txt
index e8503301b0..13a6e3f4fd 100644
--- a/tests/baselines/reference/sourceMap-Comments.sourcemap.txt
+++ b/tests/baselines/reference/sourceMap-Comments.sourcemap.txt
@@ -11,7 +11,7 @@ sourceFile:sourceMap-Comments.ts
 >>>var __names = (this && this.__names) || (function() {
 >>>    var name = Object.defineProperty ? (function(proto, name) {
 >>>        Object.defineProperty(proto[name], 'name', { 
->>>            value: name, configurable: true, writable: false, enumerable: false
+>>>            value: name, configurable: true
 >>>        });
 >>>    }) : (function(proto, name) {
 >>>        proto[name].name = name;
diff --git a/tests/baselines/reference/sourceMap-FileWithComments.js b/tests/baselines/reference/sourceMap-FileWithComments.js
index d80dec6a2a..d106e02ffd 100644
--- a/tests/baselines/reference/sourceMap-FileWithComments.js
+++ b/tests/baselines/reference/sourceMap-FileWithComments.js
@@ -39,7 +39,7 @@ var dist = p.getDist();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/sourceMap-FileWithComments.sourcemap.txt b/tests/baselines/reference/sourceMap-FileWithComments.sourcemap.txt
index bcd7d9e187..db0f02129f 100644
--- a/tests/baselines/reference/sourceMap-FileWithComments.sourcemap.txt
+++ b/tests/baselines/reference/sourceMap-FileWithComments.sourcemap.txt
@@ -11,7 +11,7 @@ sourceFile:sourceMap-FileWithComments.ts
 >>>var __names = (this && this.__names) || (function() {
 >>>    var name = Object.defineProperty ? (function(proto, name) {
 >>>        Object.defineProperty(proto[name], 'name', { 
->>>            value: name, configurable: true, writable: false, enumerable: false
+>>>            value: name, configurable: true
 >>>        });
 >>>    }) : (function(proto, name) {
 >>>        proto[name].name = name;
diff --git a/tests/baselines/reference/sourceMapSample.js b/tests/baselines/reference/sourceMapSample.js
index 519f2137c1..35d6b4f1b5 100644
--- a/tests/baselines/reference/sourceMapSample.js
+++ b/tests/baselines/reference/sourceMapSample.js
@@ -39,7 +39,7 @@ module Foo.Bar {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/sourceMapSample.sourcemap.txt b/tests/baselines/reference/sourceMapSample.sourcemap.txt
index 2ffafa87c7..0104d0a4a9 100644
--- a/tests/baselines/reference/sourceMapSample.sourcemap.txt
+++ b/tests/baselines/reference/sourceMapSample.sourcemap.txt
@@ -11,7 +11,7 @@ sourceFile:sourceMapSample.ts
 >>>var __names = (this && this.__names) || (function() {
 >>>    var name = Object.defineProperty ? (function(proto, name) {
 >>>        Object.defineProperty(proto[name], 'name', { 
->>>            value: name, configurable: true, writable: false, enumerable: false
+>>>            value: name, configurable: true
 >>>        });
 >>>    }) : (function(proto, name) {
 >>>        proto[name].name = name;
diff --git a/tests/baselines/reference/sourceMapValidationClass.js b/tests/baselines/reference/sourceMapValidationClass.js
index f8a6b43eb7..7374554bf3 100644
--- a/tests/baselines/reference/sourceMapValidationClass.js
+++ b/tests/baselines/reference/sourceMapValidationClass.js
@@ -22,7 +22,7 @@ class Greeter {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/sourceMapValidationClass.sourcemap.txt b/tests/baselines/reference/sourceMapValidationClass.sourcemap.txt
index 4be46d7444..8927bd89fc 100644
--- a/tests/baselines/reference/sourceMapValidationClass.sourcemap.txt
+++ b/tests/baselines/reference/sourceMapValidationClass.sourcemap.txt
@@ -11,7 +11,7 @@ sourceFile:sourceMapValidationClass.ts
 >>>var __names = (this && this.__names) || (function() {
 >>>    var name = Object.defineProperty ? (function(proto, name) {
 >>>        Object.defineProperty(proto[name], 'name', { 
->>>            value: name, configurable: true, writable: false, enumerable: false
+>>>            value: name, configurable: true
 >>>        });
 >>>    }) : (function(proto, name) {
 >>>        proto[name].name = name;
diff --git a/tests/baselines/reference/sourceMapValidationClasses.js b/tests/baselines/reference/sourceMapValidationClasses.js
index 29b52fbd0a..a5a0c649cf 100644
--- a/tests/baselines/reference/sourceMapValidationClasses.js
+++ b/tests/baselines/reference/sourceMapValidationClasses.js
@@ -40,7 +40,7 @@ module Foo.Bar {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/sourceMapValidationClasses.sourcemap.txt b/tests/baselines/reference/sourceMapValidationClasses.sourcemap.txt
index 543f90a828..3b01211412 100644
--- a/tests/baselines/reference/sourceMapValidationClasses.sourcemap.txt
+++ b/tests/baselines/reference/sourceMapValidationClasses.sourcemap.txt
@@ -11,7 +11,7 @@ sourceFile:sourceMapValidationClasses.ts
 >>>var __names = (this && this.__names) || (function() {
 >>>    var name = Object.defineProperty ? (function(proto, name) {
 >>>        Object.defineProperty(proto[name], 'name', { 
->>>            value: name, configurable: true, writable: false, enumerable: false
+>>>            value: name, configurable: true
 >>>        });
 >>>    }) : (function(proto, name) {
 >>>        proto[name].name = name;
diff --git a/tests/baselines/reference/sourceMapValidationDecorators.js b/tests/baselines/reference/sourceMapValidationDecorators.js
index b476d7a70f..f056b83dd0 100644
--- a/tests/baselines/reference/sourceMapValidationDecorators.js
+++ b/tests/baselines/reference/sourceMapValidationDecorators.js
@@ -58,7 +58,7 @@ class Greeter {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/sourceMapValidationDecorators.sourcemap.txt b/tests/baselines/reference/sourceMapValidationDecorators.sourcemap.txt
index f1d8268322..41a28488a8 100644
--- a/tests/baselines/reference/sourceMapValidationDecorators.sourcemap.txt
+++ b/tests/baselines/reference/sourceMapValidationDecorators.sourcemap.txt
@@ -11,7 +11,7 @@ sourceFile:sourceMapValidationDecorators.ts
 >>>var __names = (this && this.__names) || (function() {
 >>>    var name = Object.defineProperty ? (function(proto, name) {
 >>>        Object.defineProperty(proto[name], 'name', { 
->>>            value: name, configurable: true, writable: false, enumerable: false
+>>>            value: name, configurable: true
 >>>        });
 >>>    }) : (function(proto, name) {
 >>>        proto[name].name = name;
diff --git a/tests/baselines/reference/specializedOverloadWithRestParameters.js b/tests/baselines/reference/specializedOverloadWithRestParameters.js
index fdb9d2982a..1ea151d339 100644
--- a/tests/baselines/reference/specializedOverloadWithRestParameters.js
+++ b/tests/baselines/reference/specializedOverloadWithRestParameters.js
@@ -16,7 +16,7 @@ function g(tagName: any): Base {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/specializedSignatureIsNotSubtypeOfNonSpecializedSignature.js b/tests/baselines/reference/specializedSignatureIsNotSubtypeOfNonSpecializedSignature.js
index 7393463ba5..5ae59175fd 100644
--- a/tests/baselines/reference/specializedSignatureIsNotSubtypeOfNonSpecializedSignature.js
+++ b/tests/baselines/reference/specializedSignatureIsNotSubtypeOfNonSpecializedSignature.js
@@ -67,7 +67,7 @@ var a3: {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/specializedSignatureIsSubtypeOfNonSpecializedSignature.js b/tests/baselines/reference/specializedSignatureIsSubtypeOfNonSpecializedSignature.js
index 179253fc35..45cfbe24e2 100644
--- a/tests/baselines/reference/specializedSignatureIsSubtypeOfNonSpecializedSignature.js
+++ b/tests/baselines/reference/specializedSignatureIsSubtypeOfNonSpecializedSignature.js
@@ -87,7 +87,7 @@ var a3: {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/spreadMethods.js b/tests/baselines/reference/spreadMethods.js
index c877687779..ad48f728b9 100644
--- a/tests/baselines/reference/spreadMethods.js
+++ b/tests/baselines/reference/spreadMethods.js
@@ -28,7 +28,7 @@ sso.m(); // ok
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/staticAndMemberFunctions.js b/tests/baselines/reference/staticAndMemberFunctions.js
index 1949ca1f64..6aed6bd9a2 100644
--- a/tests/baselines/reference/staticAndMemberFunctions.js
+++ b/tests/baselines/reference/staticAndMemberFunctions.js
@@ -8,7 +8,7 @@ class T {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/staticAndNonStaticPropertiesSameName.js b/tests/baselines/reference/staticAndNonStaticPropertiesSameName.js
index a423898e37..2682965174 100644
--- a/tests/baselines/reference/staticAndNonStaticPropertiesSameName.js
+++ b/tests/baselines/reference/staticAndNonStaticPropertiesSameName.js
@@ -11,7 +11,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/staticClassMemberError.js b/tests/baselines/reference/staticClassMemberError.js
index c4ce20719a..7f234d5377 100644
--- a/tests/baselines/reference/staticClassMemberError.js
+++ b/tests/baselines/reference/staticClassMemberError.js
@@ -16,7 +16,7 @@ class Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/staticClassProps.js b/tests/baselines/reference/staticClassProps.js
index 39925d139e..03d02b7197 100644
--- a/tests/baselines/reference/staticClassProps.js
+++ b/tests/baselines/reference/staticClassProps.js
@@ -12,7 +12,7 @@ class C
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/staticFactory1.js b/tests/baselines/reference/staticFactory1.js
index a37c3ed112..bd44e06d8f 100644
--- a/tests/baselines/reference/staticFactory1.js
+++ b/tests/baselines/reference/staticFactory1.js
@@ -17,7 +17,7 @@ d.foo();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/staticInstanceResolution.js b/tests/baselines/reference/staticInstanceResolution.js
index ccbba20fab..92f7d77e3c 100644
--- a/tests/baselines/reference/staticInstanceResolution.js
+++ b/tests/baselines/reference/staticInstanceResolution.js
@@ -18,7 +18,7 @@ class Comment {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/staticInstanceResolution4.js b/tests/baselines/reference/staticInstanceResolution4.js
index 409777bd8a..c0db825696 100644
--- a/tests/baselines/reference/staticInstanceResolution4.js
+++ b/tests/baselines/reference/staticInstanceResolution4.js
@@ -9,7 +9,7 @@ A.foo();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/staticMemberExportAccess.js b/tests/baselines/reference/staticMemberExportAccess.js
index 874e694dba..174a8726b3 100644
--- a/tests/baselines/reference/staticMemberExportAccess.js
+++ b/tests/baselines/reference/staticMemberExportAccess.js
@@ -24,7 +24,7 @@ Sammy.bar();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/staticMemberOfClassAndPublicMemberOfAnotherClassAssignment.js b/tests/baselines/reference/staticMemberOfClassAndPublicMemberOfAnotherClassAssignment.js
index 7df37b0e38..19cfbd2bab 100644
--- a/tests/baselines/reference/staticMemberOfClassAndPublicMemberOfAnotherClassAssignment.js
+++ b/tests/baselines/reference/staticMemberOfClassAndPublicMemberOfAnotherClassAssignment.js
@@ -29,7 +29,7 @@ c = a;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/staticMethodWithTypeParameterExtendsClauseDeclFile.js b/tests/baselines/reference/staticMethodWithTypeParameterExtendsClauseDeclFile.js
index 37ff9da5c6..18d6d10868 100644
--- a/tests/baselines/reference/staticMethodWithTypeParameterExtendsClauseDeclFile.js
+++ b/tests/baselines/reference/staticMethodWithTypeParameterExtendsClauseDeclFile.js
@@ -26,7 +26,7 @@ export class publicClassWithWithPrivateTypeParameters {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/staticOffOfInstance1.js b/tests/baselines/reference/staticOffOfInstance1.js
index 598a942258..5983fac03c 100644
--- a/tests/baselines/reference/staticOffOfInstance1.js
+++ b/tests/baselines/reference/staticOffOfInstance1.js
@@ -10,7 +10,7 @@ class List {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/staticOffOfInstance2.js b/tests/baselines/reference/staticOffOfInstance2.js
index 63365a84ad..00cf0d1261 100644
--- a/tests/baselines/reference/staticOffOfInstance2.js
+++ b/tests/baselines/reference/staticOffOfInstance2.js
@@ -12,7 +12,7 @@ class List<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/staticPropertyAndFunctionWithSameName.js b/tests/baselines/reference/staticPropertyAndFunctionWithSameName.js
index 02b1e0cc80..a703931ce8 100644
--- a/tests/baselines/reference/staticPropertyAndFunctionWithSameName.js
+++ b/tests/baselines/reference/staticPropertyAndFunctionWithSameName.js
@@ -13,7 +13,7 @@ class D {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/staticPropertyNameConflicts.js b/tests/baselines/reference/staticPropertyNameConflicts.js
index db250be830..cf88a2d76f 100644
--- a/tests/baselines/reference/staticPropertyNameConflicts.js
+++ b/tests/baselines/reference/staticPropertyNameConflicts.js
@@ -195,7 +195,7 @@ module TestOnDefaultExportedClass_10 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/staticPropertyNotInClassType.js b/tests/baselines/reference/staticPropertyNotInClassType.js
index 561419ead1..6bd6096c65 100644
--- a/tests/baselines/reference/staticPropertyNotInClassType.js
+++ b/tests/baselines/reference/staticPropertyNotInClassType.js
@@ -43,7 +43,7 @@ module Generic {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/strictModeReservedWordInClassDeclaration.js b/tests/baselines/reference/strictModeReservedWordInClassDeclaration.js
index 3b8b65c091..7f60b8d402 100644
--- a/tests/baselines/reference/strictModeReservedWordInClassDeclaration.js
+++ b/tests/baselines/reference/strictModeReservedWordInClassDeclaration.js
@@ -32,7 +32,7 @@ class H extends package.A { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/strictModeUseContextualKeyword.js b/tests/baselines/reference/strictModeUseContextualKeyword.js
index 9a8816d8bc..f14fbf84fc 100644
--- a/tests/baselines/reference/strictModeUseContextualKeyword.js
+++ b/tests/baselines/reference/strictModeUseContextualKeyword.js
@@ -18,7 +18,7 @@ function H() {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/stringIndexerConstrainsPropertyDeclarations.js b/tests/baselines/reference/stringIndexerConstrainsPropertyDeclarations.js
index 6a02a3bd77..a41c586f04 100644
--- a/tests/baselines/reference/stringIndexerConstrainsPropertyDeclarations.js
+++ b/tests/baselines/reference/stringIndexerConstrainsPropertyDeclarations.js
@@ -102,7 +102,7 @@ var b: { [x: string]: string; } = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/stringIndexerConstrainsPropertyDeclarations2.js b/tests/baselines/reference/stringIndexerConstrainsPropertyDeclarations2.js
index 0249347bec..fbf9544102 100644
--- a/tests/baselines/reference/stringIndexerConstrainsPropertyDeclarations2.js
+++ b/tests/baselines/reference/stringIndexerConstrainsPropertyDeclarations2.js
@@ -44,7 +44,7 @@ var b: { [x: string]: A } = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/stringLiteralTypeIsSubtypeOfString.js b/tests/baselines/reference/stringLiteralTypeIsSubtypeOfString.js
index 631125fc5b..2c343acf64 100644
--- a/tests/baselines/reference/stringLiteralTypeIsSubtypeOfString.js
+++ b/tests/baselines/reference/stringLiteralTypeIsSubtypeOfString.js
@@ -105,7 +105,7 @@ function f16<T extends String, U extends T>(x: any) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/stringLiteralTypesInImplementationSignatures.js b/tests/baselines/reference/stringLiteralTypesInImplementationSignatures.js
index 6466462e31..29839980dd 100644
--- a/tests/baselines/reference/stringLiteralTypesInImplementationSignatures.js
+++ b/tests/baselines/reference/stringLiteralTypesInImplementationSignatures.js
@@ -31,7 +31,7 @@ var b = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/stringLiteralTypesInImplementationSignatures2.js b/tests/baselines/reference/stringLiteralTypesInImplementationSignatures2.js
index fafc023318..b5e6edb796 100644
--- a/tests/baselines/reference/stringLiteralTypesInImplementationSignatures2.js
+++ b/tests/baselines/reference/stringLiteralTypesInImplementationSignatures2.js
@@ -34,7 +34,7 @@ var b = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/stripInternal1.js b/tests/baselines/reference/stripInternal1.js
index 0fc8639ce0..f15067de4b 100644
--- a/tests/baselines/reference/stripInternal1.js
+++ b/tests/baselines/reference/stripInternal1.js
@@ -9,7 +9,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/super.js b/tests/baselines/reference/super.js
index c5629befb7..6065aa3ffc 100644
--- a/tests/baselines/reference/super.js
+++ b/tests/baselines/reference/super.js
@@ -41,7 +41,7 @@ s.foo() + ss.foo();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/super1.js b/tests/baselines/reference/super1.js
index 7656e700e0..e5d9f65fa8 100644
--- a/tests/baselines/reference/super1.js
+++ b/tests/baselines/reference/super1.js
@@ -70,7 +70,7 @@ module Base4 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/super2.js b/tests/baselines/reference/super2.js
index 25b44e1168..8a2d4ec87d 100644
--- a/tests/baselines/reference/super2.js
+++ b/tests/baselines/reference/super2.js
@@ -54,7 +54,7 @@ results1.x() + results1.y() + results2.y();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superAccess.js b/tests/baselines/reference/superAccess.js
index 66b80b1ca3..1228959ad1 100644
--- a/tests/baselines/reference/superAccess.js
+++ b/tests/baselines/reference/superAccess.js
@@ -27,7 +27,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superAccess2.js b/tests/baselines/reference/superAccess2.js
index 9441d85d1a..f3467bb3dc 100644
--- a/tests/baselines/reference/superAccess2.js
+++ b/tests/baselines/reference/superAccess2.js
@@ -28,7 +28,7 @@ class Q extends P {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superAccessInFatArrow1.js b/tests/baselines/reference/superAccessInFatArrow1.js
index e5a8723f4e..35d0eb7d0e 100644
--- a/tests/baselines/reference/superAccessInFatArrow1.js
+++ b/tests/baselines/reference/superAccessInFatArrow1.js
@@ -19,7 +19,7 @@ module test {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superCallInNonStaticMethod.js b/tests/baselines/reference/superCallInNonStaticMethod.js
index 80ce1ac9bb..f7ecf46f8c 100644
--- a/tests/baselines/reference/superCallInNonStaticMethod.js
+++ b/tests/baselines/reference/superCallInNonStaticMethod.js
@@ -54,7 +54,7 @@ class Other extends Doing {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superCallInsideObjectLiteralExpression.js b/tests/baselines/reference/superCallInsideObjectLiteralExpression.js
index 445bb3ce8e..12aee41d8c 100644
--- a/tests/baselines/reference/superCallInsideObjectLiteralExpression.js
+++ b/tests/baselines/reference/superCallInsideObjectLiteralExpression.js
@@ -16,7 +16,7 @@ class B extends A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superCallOutsideConstructor.js b/tests/baselines/reference/superCallOutsideConstructor.js
index f763863cce..5dbfa1925b 100644
--- a/tests/baselines/reference/superCallOutsideConstructor.js
+++ b/tests/baselines/reference/superCallOutsideConstructor.js
@@ -26,7 +26,7 @@ var d = new D();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superCallParameterContextualTyping3.js b/tests/baselines/reference/superCallParameterContextualTyping3.js
index c2dd9d3724..caef232c89 100644
--- a/tests/baselines/reference/superCallParameterContextualTyping3.js
+++ b/tests/baselines/reference/superCallParameterContextualTyping3.js
@@ -35,7 +35,7 @@ class C extends CBase<string> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superCallWithMissingBaseClass.js b/tests/baselines/reference/superCallWithMissingBaseClass.js
index 14bcaaa039..6f93754e40 100644
--- a/tests/baselines/reference/superCallWithMissingBaseClass.js
+++ b/tests/baselines/reference/superCallWithMissingBaseClass.js
@@ -23,7 +23,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superCallsInConstructor.js b/tests/baselines/reference/superCallsInConstructor.js
index df1ecf4774..9140ad8bf6 100644
--- a/tests/baselines/reference/superCallsInConstructor.js
+++ b/tests/baselines/reference/superCallsInConstructor.js
@@ -24,7 +24,7 @@ class Derived extends Base {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superErrors.js b/tests/baselines/reference/superErrors.js
index a7d89bfccd..03cbb6eb56 100644
--- a/tests/baselines/reference/superErrors.js
+++ b/tests/baselines/reference/superErrors.js
@@ -55,7 +55,7 @@ class RegisteredUser extends User {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superHasMethodsFromMergedInterface.js b/tests/baselines/reference/superHasMethodsFromMergedInterface.js
index 48000c9c3e..71fee2b67d 100644
--- a/tests/baselines/reference/superHasMethodsFromMergedInterface.js
+++ b/tests/baselines/reference/superHasMethodsFromMergedInterface.js
@@ -12,7 +12,7 @@ class Sub extends C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superInCatchBlock1.js b/tests/baselines/reference/superInCatchBlock1.js
index 3a83b2a3a7..e49f111a71 100644
--- a/tests/baselines/reference/superInCatchBlock1.js
+++ b/tests/baselines/reference/superInCatchBlock1.js
@@ -17,7 +17,7 @@ class B extends A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superInConstructorParam1.js b/tests/baselines/reference/superInConstructorParam1.js
index c10f37ead7..b67f0dd530 100644
--- a/tests/baselines/reference/superInConstructorParam1.js
+++ b/tests/baselines/reference/superInConstructorParam1.js
@@ -14,7 +14,7 @@ class C extends B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superInLambdas.js b/tests/baselines/reference/superInLambdas.js
index f4a6b34dbb..628bda31f2 100644
--- a/tests/baselines/reference/superInLambdas.js
+++ b/tests/baselines/reference/superInLambdas.js
@@ -71,7 +71,7 @@ class RegisteredUser4 extends User {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superInObjectLiterals_ES5.js b/tests/baselines/reference/superInObjectLiterals_ES5.js
index b119eb3c24..34230b70e9 100644
--- a/tests/baselines/reference/superInObjectLiterals_ES5.js
+++ b/tests/baselines/reference/superInObjectLiterals_ES5.js
@@ -63,7 +63,7 @@ class B extends A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superPropertyAccess.js b/tests/baselines/reference/superPropertyAccess.js
index 8052972f2d..a8371e0944 100644
--- a/tests/baselines/reference/superPropertyAccess.js
+++ b/tests/baselines/reference/superPropertyAccess.js
@@ -39,7 +39,7 @@ class MyDerived extends MyBase {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superPropertyAccess1.js b/tests/baselines/reference/superPropertyAccess1.js
index 95e17ab56f..25eac5c61b 100644
--- a/tests/baselines/reference/superPropertyAccess1.js
+++ b/tests/baselines/reference/superPropertyAccess1.js
@@ -31,7 +31,7 @@ class D extends C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superPropertyAccessInComputedPropertiesOfNestedType_ES5.js b/tests/baselines/reference/superPropertyAccessInComputedPropertiesOfNestedType_ES5.js
index f363957bd7..d32ad076dc 100644
--- a/tests/baselines/reference/superPropertyAccessInComputedPropertiesOfNestedType_ES5.js
+++ b/tests/baselines/reference/superPropertyAccessInComputedPropertiesOfNestedType_ES5.js
@@ -18,7 +18,7 @@ class B extends A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superPropertyAccessInSuperCall01.js b/tests/baselines/reference/superPropertyAccessInSuperCall01.js
index de1e494414..7694ac36ae 100644
--- a/tests/baselines/reference/superPropertyAccessInSuperCall01.js
+++ b/tests/baselines/reference/superPropertyAccessInSuperCall01.js
@@ -15,7 +15,7 @@ class B extends A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superPropertyAccessNoError.js b/tests/baselines/reference/superPropertyAccessNoError.js
index c9db138649..85e672c260 100644
--- a/tests/baselines/reference/superPropertyAccessNoError.js
+++ b/tests/baselines/reference/superPropertyAccessNoError.js
@@ -80,7 +80,7 @@ instance.returnThis().fn();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superPropertyAccess_ES5.js b/tests/baselines/reference/superPropertyAccess_ES5.js
index f2ea444cc1..5e94d74988 100644
--- a/tests/baselines/reference/superPropertyAccess_ES5.js
+++ b/tests/baselines/reference/superPropertyAccess_ES5.js
@@ -32,7 +32,7 @@ class B extends A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superPropertyInConstructorBeforeSuperCall.js b/tests/baselines/reference/superPropertyInConstructorBeforeSuperCall.js
index 88bae4ed47..7593a12283 100644
--- a/tests/baselines/reference/superPropertyInConstructorBeforeSuperCall.js
+++ b/tests/baselines/reference/superPropertyInConstructorBeforeSuperCall.js
@@ -19,7 +19,7 @@ class C2 extends B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superSymbolIndexedAccess5.js b/tests/baselines/reference/superSymbolIndexedAccess5.js
index ee769255d3..e5b28c2b98 100644
--- a/tests/baselines/reference/superSymbolIndexedAccess5.js
+++ b/tests/baselines/reference/superSymbolIndexedAccess5.js
@@ -17,7 +17,7 @@ class Bar extends Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/superWithTypeArgument3.js b/tests/baselines/reference/superWithTypeArgument3.js
index 490f144a01..6c1f0c3243 100644
--- a/tests/baselines/reference/superWithTypeArgument3.js
+++ b/tests/baselines/reference/superWithTypeArgument3.js
@@ -17,7 +17,7 @@ class D<T> extends C<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/super_inside-object-literal-getters-and-setters.js b/tests/baselines/reference/super_inside-object-literal-getters-and-setters.js
index 85cbdbedce..e1753645c1 100644
--- a/tests/baselines/reference/super_inside-object-literal-getters-and-setters.js
+++ b/tests/baselines/reference/super_inside-object-literal-getters-and-setters.js
@@ -31,7 +31,7 @@ class SuperObjectTest extends F {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisBinding.js b/tests/baselines/reference/thisBinding.js
index 7bcbf25952..b2121aa830 100644
--- a/tests/baselines/reference/thisBinding.js
+++ b/tests/baselines/reference/thisBinding.js
@@ -25,7 +25,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisCapture1.js b/tests/baselines/reference/thisCapture1.js
index 28ead6d784..64b4c01103 100644
--- a/tests/baselines/reference/thisCapture1.js
+++ b/tests/baselines/reference/thisCapture1.js
@@ -13,7 +13,7 @@ class X {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisExpressionInCallExpressionWithTypeArguments.js b/tests/baselines/reference/thisExpressionInCallExpressionWithTypeArguments.js
index dc73d9f86a..acb1f18ff3 100644
--- a/tests/baselines/reference/thisExpressionInCallExpressionWithTypeArguments.js
+++ b/tests/baselines/reference/thisExpressionInCallExpressionWithTypeArguments.js
@@ -8,7 +8,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisInConstructorParameter2.js b/tests/baselines/reference/thisInConstructorParameter2.js
index 2a3008427b..3f4f88a760 100644
--- a/tests/baselines/reference/thisInConstructorParameter2.js
+++ b/tests/baselines/reference/thisInConstructorParameter2.js
@@ -13,7 +13,7 @@ class P {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisInInnerFunctions.js b/tests/baselines/reference/thisInInnerFunctions.js
index 82938dda9e..f70fb30c21 100644
--- a/tests/baselines/reference/thisInInnerFunctions.js
+++ b/tests/baselines/reference/thisInInnerFunctions.js
@@ -21,7 +21,7 @@ function test() {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisInLambda.js b/tests/baselines/reference/thisInLambda.js
index a583db3b75..089d4cadf9 100644
--- a/tests/baselines/reference/thisInLambda.js
+++ b/tests/baselines/reference/thisInLambda.js
@@ -22,7 +22,7 @@ class myCls {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisInObjectLiterals.js b/tests/baselines/reference/thisInObjectLiterals.js
index eb36655dfa..5ac4daeffd 100644
--- a/tests/baselines/reference/thisInObjectLiterals.js
+++ b/tests/baselines/reference/thisInObjectLiterals.js
@@ -23,7 +23,7 @@ var obj: { f: () => any; };
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisInOuterClassBody.js b/tests/baselines/reference/thisInOuterClassBody.js
index e1ee4a2ce3..8a1efb9b3e 100644
--- a/tests/baselines/reference/thisInOuterClassBody.js
+++ b/tests/baselines/reference/thisInOuterClassBody.js
@@ -24,7 +24,7 @@ class Foo {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisInPropertyBoundDeclarations.js b/tests/baselines/reference/thisInPropertyBoundDeclarations.js
index 374135e765..b6bcd7e02c 100644
--- a/tests/baselines/reference/thisInPropertyBoundDeclarations.js
+++ b/tests/baselines/reference/thisInPropertyBoundDeclarations.js
@@ -71,7 +71,7 @@ class B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisTypeAndConstraints.js b/tests/baselines/reference/thisTypeAndConstraints.js
index aacf3eb1bb..d87c52812e 100644
--- a/tests/baselines/reference/thisTypeAndConstraints.js
+++ b/tests/baselines/reference/thisTypeAndConstraints.js
@@ -26,7 +26,7 @@ class B<T extends A> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisTypeAsConstraint.js b/tests/baselines/reference/thisTypeAsConstraint.js
index c6ce9b283b..dee2a89b3f 100644
--- a/tests/baselines/reference/thisTypeAsConstraint.js
+++ b/tests/baselines/reference/thisTypeAsConstraint.js
@@ -8,7 +8,7 @@ class C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisTypeErrors.js b/tests/baselines/reference/thisTypeErrors.js
index 70d286fa22..db59c2e798 100644
--- a/tests/baselines/reference/thisTypeErrors.js
+++ b/tests/baselines/reference/thisTypeErrors.js
@@ -60,7 +60,7 @@ class C3 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisTypeInClasses.js b/tests/baselines/reference/thisTypeInClasses.js
index 0530f3e042..9b584ff2e2 100644
--- a/tests/baselines/reference/thisTypeInClasses.js
+++ b/tests/baselines/reference/thisTypeInClasses.js
@@ -54,7 +54,7 @@ class C5 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisTypeInFunctions.js b/tests/baselines/reference/thisTypeInFunctions.js
index 7fff3a3924..b057805dad 100644
--- a/tests/baselines/reference/thisTypeInFunctions.js
+++ b/tests/baselines/reference/thisTypeInFunctions.js
@@ -198,7 +198,7 @@ function missingTypeIsImplicitAny(this, a: number) { return this.anything + a; }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisTypeInFunctionsNegative.js b/tests/baselines/reference/thisTypeInFunctionsNegative.js
index 209c461c6f..81e83d915f 100644
--- a/tests/baselines/reference/thisTypeInFunctionsNegative.js
+++ b/tests/baselines/reference/thisTypeInFunctionsNegative.js
@@ -180,7 +180,7 @@ c.explicitProperty = (this, m) => m + this.n;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/thisWhenTypeCheckFails.js b/tests/baselines/reference/thisWhenTypeCheckFails.js
index c066410702..cf842a29b8 100644
--- a/tests/baselines/reference/thisWhenTypeCheckFails.js
+++ b/tests/baselines/reference/thisWhenTypeCheckFails.js
@@ -12,7 +12,7 @@ class c {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/throwInEnclosingStatements.js b/tests/baselines/reference/throwInEnclosingStatements.js
index 41c0e68e5b..6c62bd519f 100644
--- a/tests/baselines/reference/throwInEnclosingStatements.js
+++ b/tests/baselines/reference/throwInEnclosingStatements.js
@@ -50,7 +50,7 @@ var aa = {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/topLevel.js b/tests/baselines/reference/topLevel.js
index 8fbafb3ea1..4402ec8d81 100644
--- a/tests/baselines/reference/topLevel.js
+++ b/tests/baselines/reference/topLevel.js
@@ -31,7 +31,7 @@ result+=(M.origin.move(1,1));
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/trailingCommaInHeterogenousArrayLiteral1.js b/tests/baselines/reference/trailingCommaInHeterogenousArrayLiteral1.js
index fc68add9c5..5e6adff8ef 100644
--- a/tests/baselines/reference/trailingCommaInHeterogenousArrayLiteral1.js
+++ b/tests/baselines/reference/trailingCommaInHeterogenousArrayLiteral1.js
@@ -13,7 +13,7 @@ class arrTest {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxAttributeResolution10.js b/tests/baselines/reference/tsxAttributeResolution10.js
index 5034708e3c..8764cc2e79 100644
--- a/tests/baselines/reference/tsxAttributeResolution10.js
+++ b/tests/baselines/reference/tsxAttributeResolution10.js
@@ -34,7 +34,7 @@ export class MyComponent {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxAttributeResolution11.js b/tests/baselines/reference/tsxAttributeResolution11.js
index fc245ec5d1..4eb8861945 100644
--- a/tests/baselines/reference/tsxAttributeResolution11.js
+++ b/tests/baselines/reference/tsxAttributeResolution11.js
@@ -32,7 +32,7 @@ var x = <MyComponent bar='world' />;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxAttributeResolution15.js b/tests/baselines/reference/tsxAttributeResolution15.js
index 10fcb30d5e..c5441edba9 100644
--- a/tests/baselines/reference/tsxAttributeResolution15.js
+++ b/tests/baselines/reference/tsxAttributeResolution15.js
@@ -30,7 +30,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxAttributeResolution16.js b/tests/baselines/reference/tsxAttributeResolution16.js
index c1ff322234..a61cf8ac87 100644
--- a/tests/baselines/reference/tsxAttributeResolution16.js
+++ b/tests/baselines/reference/tsxAttributeResolution16.js
@@ -39,7 +39,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxAttributeResolution9.js b/tests/baselines/reference/tsxAttributeResolution9.js
index 106a897f7e..d2d20f2d13 100644
--- a/tests/baselines/reference/tsxAttributeResolution9.js
+++ b/tests/baselines/reference/tsxAttributeResolution9.js
@@ -30,7 +30,7 @@ export class MyComponent {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxCorrectlyParseLessThanComparison1.js b/tests/baselines/reference/tsxCorrectlyParseLessThanComparison1.js
index 7853187a4b..24d308ab98 100644
--- a/tests/baselines/reference/tsxCorrectlyParseLessThanComparison1.js
+++ b/tests/baselines/reference/tsxCorrectlyParseLessThanComparison1.js
@@ -34,7 +34,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxDefaultAttributesResolution1.js b/tests/baselines/reference/tsxDefaultAttributesResolution1.js
index 50a09b5e45..f94109bc68 100644
--- a/tests/baselines/reference/tsxDefaultAttributesResolution1.js
+++ b/tests/baselines/reference/tsxDefaultAttributesResolution1.js
@@ -28,7 +28,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxDefaultAttributesResolution2.js b/tests/baselines/reference/tsxDefaultAttributesResolution2.js
index 23185f7d7c..26f50e1759 100644
--- a/tests/baselines/reference/tsxDefaultAttributesResolution2.js
+++ b/tests/baselines/reference/tsxDefaultAttributesResolution2.js
@@ -28,7 +28,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxDefaultAttributesResolution3.js b/tests/baselines/reference/tsxDefaultAttributesResolution3.js
index 17c6eccf1d..d5df64caec 100644
--- a/tests/baselines/reference/tsxDefaultAttributesResolution3.js
+++ b/tests/baselines/reference/tsxDefaultAttributesResolution3.js
@@ -28,7 +28,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxDynamicTagName5.js b/tests/baselines/reference/tsxDynamicTagName5.js
index 73277ae860..673a02c421 100644
--- a/tests/baselines/reference/tsxDynamicTagName5.js
+++ b/tests/baselines/reference/tsxDynamicTagName5.js
@@ -33,7 +33,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxDynamicTagName7.js b/tests/baselines/reference/tsxDynamicTagName7.js
index 7ee5d47e67..1735ac972d 100644
--- a/tests/baselines/reference/tsxDynamicTagName7.js
+++ b/tests/baselines/reference/tsxDynamicTagName7.js
@@ -33,7 +33,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxDynamicTagName8.js b/tests/baselines/reference/tsxDynamicTagName8.js
index dcc50ce5e5..c98d623bb5 100644
--- a/tests/baselines/reference/tsxDynamicTagName8.js
+++ b/tests/baselines/reference/tsxDynamicTagName8.js
@@ -33,7 +33,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxDynamicTagName9.js b/tests/baselines/reference/tsxDynamicTagName9.js
index be8b8aad68..872a081407 100644
--- a/tests/baselines/reference/tsxDynamicTagName9.js
+++ b/tests/baselines/reference/tsxDynamicTagName9.js
@@ -33,7 +33,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxEmit1.js b/tests/baselines/reference/tsxEmit1.js
index 80f380d823..02a9d4cc97 100644
--- a/tests/baselines/reference/tsxEmit1.js
+++ b/tests/baselines/reference/tsxEmit1.js
@@ -44,7 +44,7 @@ var whitespace3 = <div>
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxExternalModuleEmit1.js b/tests/baselines/reference/tsxExternalModuleEmit1.js
index ff56aa90b4..c3e3bffaa5 100644
--- a/tests/baselines/reference/tsxExternalModuleEmit1.js
+++ b/tests/baselines/reference/tsxExternalModuleEmit1.js
@@ -45,7 +45,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
@@ -85,7 +85,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxGenericAttributesType3.js b/tests/baselines/reference/tsxGenericAttributesType3.js
index 0f3c6827e6..f9ffad09ff 100644
--- a/tests/baselines/reference/tsxGenericAttributesType3.js
+++ b/tests/baselines/reference/tsxGenericAttributesType3.js
@@ -27,7 +27,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxGenericAttributesType4.js b/tests/baselines/reference/tsxGenericAttributesType4.js
index 7ad79bd550..35bf88388f 100644
--- a/tests/baselines/reference/tsxGenericAttributesType4.js
+++ b/tests/baselines/reference/tsxGenericAttributesType4.js
@@ -28,7 +28,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxGenericAttributesType5.js b/tests/baselines/reference/tsxGenericAttributesType5.js
index d158a5e78d..5fb618fccf 100644
--- a/tests/baselines/reference/tsxGenericAttributesType5.js
+++ b/tests/baselines/reference/tsxGenericAttributesType5.js
@@ -29,7 +29,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxGenericAttributesType6.js b/tests/baselines/reference/tsxGenericAttributesType6.js
index 0ce7f98eef..b9c7cdc629 100644
--- a/tests/baselines/reference/tsxGenericAttributesType6.js
+++ b/tests/baselines/reference/tsxGenericAttributesType6.js
@@ -28,7 +28,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxGenericAttributesType9.js b/tests/baselines/reference/tsxGenericAttributesType9.js
index 6a48a6921d..08b6e1c150 100644
--- a/tests/baselines/reference/tsxGenericAttributesType9.js
+++ b/tests/baselines/reference/tsxGenericAttributesType9.js
@@ -28,7 +28,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxReactEmit1.js b/tests/baselines/reference/tsxReactEmit1.js
index bce8983aa0..9df2f5fca0 100644
--- a/tests/baselines/reference/tsxReactEmit1.js
+++ b/tests/baselines/reference/tsxReactEmit1.js
@@ -45,7 +45,7 @@ var whitespace3 = <div>
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxSpreadAttributesResolution1.js b/tests/baselines/reference/tsxSpreadAttributesResolution1.js
index 1dea3ceacf..57757fbd1c 100644
--- a/tests/baselines/reference/tsxSpreadAttributesResolution1.js
+++ b/tests/baselines/reference/tsxSpreadAttributesResolution1.js
@@ -29,7 +29,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxSpreadAttributesResolution10.js b/tests/baselines/reference/tsxSpreadAttributesResolution10.js
index c6c6efc56d..68c40c0fe7 100644
--- a/tests/baselines/reference/tsxSpreadAttributesResolution10.js
+++ b/tests/baselines/reference/tsxSpreadAttributesResolution10.js
@@ -38,7 +38,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxSpreadAttributesResolution11.js b/tests/baselines/reference/tsxSpreadAttributesResolution11.js
index 3097f21e76..bbc8a4ef45 100644
--- a/tests/baselines/reference/tsxSpreadAttributesResolution11.js
+++ b/tests/baselines/reference/tsxSpreadAttributesResolution11.js
@@ -46,7 +46,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxSpreadAttributesResolution12.js b/tests/baselines/reference/tsxSpreadAttributesResolution12.js
index 425f9040c6..cf31e3639d 100644
--- a/tests/baselines/reference/tsxSpreadAttributesResolution12.js
+++ b/tests/baselines/reference/tsxSpreadAttributesResolution12.js
@@ -47,7 +47,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxSpreadAttributesResolution2.js b/tests/baselines/reference/tsxSpreadAttributesResolution2.js
index 3cea6a2dc8..1fdc8442ee 100644
--- a/tests/baselines/reference/tsxSpreadAttributesResolution2.js
+++ b/tests/baselines/reference/tsxSpreadAttributesResolution2.js
@@ -36,7 +36,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxSpreadAttributesResolution3.js b/tests/baselines/reference/tsxSpreadAttributesResolution3.js
index 7ae886eb2e..694ab22185 100644
--- a/tests/baselines/reference/tsxSpreadAttributesResolution3.js
+++ b/tests/baselines/reference/tsxSpreadAttributesResolution3.js
@@ -36,7 +36,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxSpreadAttributesResolution4.js b/tests/baselines/reference/tsxSpreadAttributesResolution4.js
index 8ad239a344..24fa990110 100644
--- a/tests/baselines/reference/tsxSpreadAttributesResolution4.js
+++ b/tests/baselines/reference/tsxSpreadAttributesResolution4.js
@@ -49,7 +49,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxSpreadAttributesResolution5.js b/tests/baselines/reference/tsxSpreadAttributesResolution5.js
index 9228b70a2f..7c05799246 100644
--- a/tests/baselines/reference/tsxSpreadAttributesResolution5.js
+++ b/tests/baselines/reference/tsxSpreadAttributesResolution5.js
@@ -48,7 +48,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxSpreadAttributesResolution6.js b/tests/baselines/reference/tsxSpreadAttributesResolution6.js
index edcd3e64a2..af6638ea46 100644
--- a/tests/baselines/reference/tsxSpreadAttributesResolution6.js
+++ b/tests/baselines/reference/tsxSpreadAttributesResolution6.js
@@ -32,7 +32,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxSpreadAttributesResolution7.js b/tests/baselines/reference/tsxSpreadAttributesResolution7.js
index edcd6645c3..d23d309376 100644
--- a/tests/baselines/reference/tsxSpreadAttributesResolution7.js
+++ b/tests/baselines/reference/tsxSpreadAttributesResolution7.js
@@ -39,7 +39,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxSpreadAttributesResolution8.js b/tests/baselines/reference/tsxSpreadAttributesResolution8.js
index 827c07f7ea..9ee3084087 100644
--- a/tests/baselines/reference/tsxSpreadAttributesResolution8.js
+++ b/tests/baselines/reference/tsxSpreadAttributesResolution8.js
@@ -41,7 +41,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxSpreadAttributesResolution9.js b/tests/baselines/reference/tsxSpreadAttributesResolution9.js
index 70351631ad..121a9063b6 100644
--- a/tests/baselines/reference/tsxSpreadAttributesResolution9.js
+++ b/tests/baselines/reference/tsxSpreadAttributesResolution9.js
@@ -39,7 +39,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxStatelessFunctionComponents2.js b/tests/baselines/reference/tsxStatelessFunctionComponents2.js
index 85ce1dd739..857b09d18c 100644
--- a/tests/baselines/reference/tsxStatelessFunctionComponents2.js
+++ b/tests/baselines/reference/tsxStatelessFunctionComponents2.js
@@ -52,7 +52,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxUnionElementType3.js b/tests/baselines/reference/tsxUnionElementType3.js
index db52ef1e7e..c2d1c92a80 100644
--- a/tests/baselines/reference/tsxUnionElementType3.js
+++ b/tests/baselines/reference/tsxUnionElementType3.js
@@ -51,7 +51,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxUnionElementType4.js b/tests/baselines/reference/tsxUnionElementType4.js
index dd98da2fd7..b05dd769d7 100644
--- a/tests/baselines/reference/tsxUnionElementType4.js
+++ b/tests/baselines/reference/tsxUnionElementType4.js
@@ -50,7 +50,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/tsxUnionTypeComponent1.js b/tests/baselines/reference/tsxUnionTypeComponent1.js
index 3801c5a599..978609f482 100644
--- a/tests/baselines/reference/tsxUnionTypeComponent1.js
+++ b/tests/baselines/reference/tsxUnionTypeComponent1.js
@@ -38,7 +38,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeCheckTypeArgument.js b/tests/baselines/reference/typeCheckTypeArgument.js
index 8765d17ee8..50dce6ac67 100644
--- a/tests/baselines/reference/typeCheckTypeArgument.js
+++ b/tests/baselines/reference/typeCheckTypeArgument.js
@@ -17,7 +17,7 @@ class Foo2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeConstraintsWithConstructSignatures.js b/tests/baselines/reference/typeConstraintsWithConstructSignatures.js
index dedbf6c415..7a4f61fcd4 100644
--- a/tests/baselines/reference/typeConstraintsWithConstructSignatures.js
+++ b/tests/baselines/reference/typeConstraintsWithConstructSignatures.js
@@ -16,7 +16,7 @@ class C<T extends Constructable> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeGuardFunction.js b/tests/baselines/reference/typeGuardFunction.js
index 50952ec102..452d72a3e5 100644
--- a/tests/baselines/reference/typeGuardFunction.js
+++ b/tests/baselines/reference/typeGuardFunction.js
@@ -96,7 +96,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeGuardFunctionOfFormThis.js b/tests/baselines/reference/typeGuardFunctionOfFormThis.js
index 3623b6b185..4939143aa5 100644
--- a/tests/baselines/reference/typeGuardFunctionOfFormThis.js
+++ b/tests/baselines/reference/typeGuardFunctionOfFormThis.js
@@ -145,7 +145,7 @@ interface MimicGuardInterface {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeGuardFunctionOfFormThisErrors.js b/tests/baselines/reference/typeGuardFunctionOfFormThisErrors.js
index a092542802..e4f3d1cb3d 100644
--- a/tests/baselines/reference/typeGuardFunctionOfFormThisErrors.js
+++ b/tests/baselines/reference/typeGuardFunctionOfFormThisErrors.js
@@ -63,7 +63,7 @@ else {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeGuardsInClassMethods.js b/tests/baselines/reference/typeGuardsInClassMethods.js
index a7e1137184..a79522a8de 100644
--- a/tests/baselines/reference/typeGuardsInClassMethods.js
+++ b/tests/baselines/reference/typeGuardsInClassMethods.js
@@ -74,7 +74,7 @@ class C1 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeGuardsInProperties.js b/tests/baselines/reference/typeGuardsInProperties.js
index 3a4cfee5d0..7b8ec297ad 100644
--- a/tests/baselines/reference/typeGuardsInProperties.js
+++ b/tests/baselines/reference/typeGuardsInProperties.js
@@ -31,7 +31,7 @@ strOrNum = typeof obj1.x === "string" && obj1.x;  // string | number
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeGuardsOnClassProperty.js b/tests/baselines/reference/typeGuardsOnClassProperty.js
index d1ba221411..4058fd57f8 100644
--- a/tests/baselines/reference/typeGuardsOnClassProperty.js
+++ b/tests/baselines/reference/typeGuardsOnClassProperty.js
@@ -34,7 +34,7 @@ if (typeof prop1 === "string" && prop1.toLocaleLowerCase()) { }
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeInferenceLiteralUnion.js b/tests/baselines/reference/typeInferenceLiteralUnion.js
index ef6e69b6f9..693074b69b 100644
--- a/tests/baselines/reference/typeInferenceLiteralUnion.js
+++ b/tests/baselines/reference/typeInferenceLiteralUnion.js
@@ -41,7 +41,7 @@ extentMixed = extent([new NumCoercible(10), 13, '12', true]);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeInferenceReturnTypeCallback.js b/tests/baselines/reference/typeInferenceReturnTypeCallback.js
index 94ff05fc8b..3e91a29b51 100644
--- a/tests/baselines/reference/typeInferenceReturnTypeCallback.js
+++ b/tests/baselines/reference/typeInferenceReturnTypeCallback.js
@@ -25,7 +25,7 @@ class Cons<T> implements IList<T>{
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeOfThis.js b/tests/baselines/reference/typeOfThis.js
index 3782e8f5ff..c0ac3e2355 100644
--- a/tests/baselines/reference/typeOfThis.js
+++ b/tests/baselines/reference/typeOfThis.js
@@ -181,7 +181,7 @@ this.spaaaaace = 4;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeOfThisInInstanceMember.js b/tests/baselines/reference/typeOfThisInInstanceMember.js
index 00a824a821..30c15f28e7 100644
--- a/tests/baselines/reference/typeOfThisInInstanceMember.js
+++ b/tests/baselines/reference/typeOfThisInInstanceMember.js
@@ -35,7 +35,7 @@ rs.forEach(x => {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeOfThisInInstanceMember2.js b/tests/baselines/reference/typeOfThisInInstanceMember2.js
index ccd3efa0fb..d657f343ea 100644
--- a/tests/baselines/reference/typeOfThisInInstanceMember2.js
+++ b/tests/baselines/reference/typeOfThisInInstanceMember2.js
@@ -39,7 +39,7 @@ rs.forEach(x => {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeOfThisInMemberFunctions.js b/tests/baselines/reference/typeOfThisInMemberFunctions.js
index 48ad3bc3aa..85177e9a71 100644
--- a/tests/baselines/reference/typeOfThisInMemberFunctions.js
+++ b/tests/baselines/reference/typeOfThisInMemberFunctions.js
@@ -35,7 +35,7 @@ class E<T extends Date> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeParameterAssignmentCompat1.js b/tests/baselines/reference/typeParameterAssignmentCompat1.js
index c1a739f220..0122b28ae6 100644
--- a/tests/baselines/reference/typeParameterAssignmentCompat1.js
+++ b/tests/baselines/reference/typeParameterAssignmentCompat1.js
@@ -23,7 +23,7 @@ class C<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeParameterExtendingUnion1.js b/tests/baselines/reference/typeParameterExtendingUnion1.js
index bece6309f2..189d5f4f22 100644
--- a/tests/baselines/reference/typeParameterExtendingUnion1.js
+++ b/tests/baselines/reference/typeParameterExtendingUnion1.js
@@ -16,7 +16,7 @@ function f<T extends Cat | Dog>(a: T) {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeParameterExtendingUnion2.js b/tests/baselines/reference/typeParameterExtendingUnion2.js
index 0a927ed2d8..74e26b6e35 100644
--- a/tests/baselines/reference/typeParameterExtendingUnion2.js
+++ b/tests/baselines/reference/typeParameterExtendingUnion2.js
@@ -16,7 +16,7 @@ function f<T extends Cat | Dog>(a: T) {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeParameterUsedAsTypeParameterConstraint4.js b/tests/baselines/reference/typeParameterUsedAsTypeParameterConstraint4.js
index 5885098c2c..b3ccbc006e 100644
--- a/tests/baselines/reference/typeParameterUsedAsTypeParameterConstraint4.js
+++ b/tests/baselines/reference/typeParameterUsedAsTypeParameterConstraint4.js
@@ -59,7 +59,7 @@ var f4 = <U extends T, T>(x: V, y: X) => { // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeParameterWithInvalidConstraintType.js b/tests/baselines/reference/typeParameterWithInvalidConstraintType.js
index 82823c9c00..cc2033697b 100644
--- a/tests/baselines/reference/typeParameterWithInvalidConstraintType.js
+++ b/tests/baselines/reference/typeParameterWithInvalidConstraintType.js
@@ -13,7 +13,7 @@ class A<T extends T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeParametersAndParametersInComputedNames.js b/tests/baselines/reference/typeParametersAndParametersInComputedNames.js
index b2634904c9..2ea075177f 100644
--- a/tests/baselines/reference/typeParametersAndParametersInComputedNames.js
+++ b/tests/baselines/reference/typeParametersAndParametersInComputedNames.js
@@ -12,7 +12,7 @@ class A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeParametersAreIdenticalToThemselves.js b/tests/baselines/reference/typeParametersAreIdenticalToThemselves.js
index 705fb6ac03..4b33d6f12e 100644
--- a/tests/baselines/reference/typeParametersAreIdenticalToThemselves.js
+++ b/tests/baselines/reference/typeParametersAreIdenticalToThemselves.js
@@ -81,7 +81,7 @@ interface I2<T extends Date> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeParametersAvailableInNestedScope.js b/tests/baselines/reference/typeParametersAvailableInNestedScope.js
index 88d54f8f3f..c057c742d5 100644
--- a/tests/baselines/reference/typeParametersAvailableInNestedScope.js
+++ b/tests/baselines/reference/typeParametersAvailableInNestedScope.js
@@ -25,7 +25,7 @@ c.data = c.foo();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeQueryOnClass.js b/tests/baselines/reference/typeQueryOnClass.js
index 11bed558f4..908eb6809e 100644
--- a/tests/baselines/reference/typeQueryOnClass.js
+++ b/tests/baselines/reference/typeQueryOnClass.js
@@ -60,7 +60,7 @@ var r4: typeof d;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeQueryWithReservedWords.js b/tests/baselines/reference/typeQueryWithReservedWords.js
index 2e6f9c505f..8e8609bea9 100644
--- a/tests/baselines/reference/typeQueryWithReservedWords.js
+++ b/tests/baselines/reference/typeQueryWithReservedWords.js
@@ -19,7 +19,7 @@ interface IScope {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeRelationships.js b/tests/baselines/reference/typeRelationships.js
index b26da52661..236d78edd0 100644
--- a/tests/baselines/reference/typeRelationships.js
+++ b/tests/baselines/reference/typeRelationships.js
@@ -44,7 +44,7 @@ class D extends C {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeResolution.js b/tests/baselines/reference/typeResolution.js
index c92156714a..253b95a12d 100644
--- a/tests/baselines/reference/typeResolution.js
+++ b/tests/baselines/reference/typeResolution.js
@@ -114,7 +114,7 @@ module TopLevelModule2 {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeResolution.sourcemap.txt b/tests/baselines/reference/typeResolution.sourcemap.txt
index 618675fedf..d1169d41c8 100644
--- a/tests/baselines/reference/typeResolution.sourcemap.txt
+++ b/tests/baselines/reference/typeResolution.sourcemap.txt
@@ -11,7 +11,7 @@ sourceFile:typeResolution.ts
 >>>var __names = (this && this.__names) || (function() {
 >>>    var name = Object.defineProperty ? (function(proto, name) {
 >>>        Object.defineProperty(proto[name], 'name', { 
->>>            value: name, configurable: true, writable: false, enumerable: false
+>>>            value: name, configurable: true
 >>>        });
 >>>    }) : (function(proto, name) {
 >>>        proto[name].name = name;
diff --git a/tests/baselines/reference/typeVariableTypeGuards.js b/tests/baselines/reference/typeVariableTypeGuards.js
index 7f54c0a069..3fbd7533c6 100644
--- a/tests/baselines/reference/typeVariableTypeGuards.js
+++ b/tests/baselines/reference/typeVariableTypeGuards.js
@@ -88,7 +88,7 @@ function f5<T, K extends keyof T>(obj: T | undefined, key: K) {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typedGenericPrototypeMember.js b/tests/baselines/reference/typedGenericPrototypeMember.js
index 2288b62519..f5af0c7028 100644
--- a/tests/baselines/reference/typedGenericPrototypeMember.js
+++ b/tests/baselines/reference/typedGenericPrototypeMember.js
@@ -10,7 +10,7 @@ List.prototype.add("abc"); // Valid because T is instantiated to any
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typeofClass2.js b/tests/baselines/reference/typeofClass2.js
index 9f88c7e0de..a4437e0a20 100644
--- a/tests/baselines/reference/typeofClass2.js
+++ b/tests/baselines/reference/typeofClass2.js
@@ -35,7 +35,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/typesWithSpecializedCallSignatures.js b/tests/baselines/reference/typesWithSpecializedCallSignatures.js
index cd9c19c947..a9112a6eb4 100644
--- a/tests/baselines/reference/typesWithSpecializedCallSignatures.js
+++ b/tests/baselines/reference/typesWithSpecializedCallSignatures.js
@@ -56,7 +56,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/undeclaredMethod.js b/tests/baselines/reference/undeclaredMethod.js
index 56799db141..13f2849eb3 100644
--- a/tests/baselines/reference/undeclaredMethod.js
+++ b/tests/baselines/reference/undeclaredMethod.js
@@ -16,7 +16,7 @@ c.saltbar();	// crash
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/underscoreMapFirst.js b/tests/baselines/reference/underscoreMapFirst.js
index ccacda2416..ae550134e0 100644
--- a/tests/baselines/reference/underscoreMapFirst.js
+++ b/tests/baselines/reference/underscoreMapFirst.js
@@ -62,7 +62,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unionTypeEquivalence.js b/tests/baselines/reference/unionTypeEquivalence.js
index dffd6cf986..9c4721df94 100644
--- a/tests/baselines/reference/unionTypeEquivalence.js
+++ b/tests/baselines/reference/unionTypeEquivalence.js
@@ -33,7 +33,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unionTypeFromArrayLiteral.js b/tests/baselines/reference/unionTypeFromArrayLiteral.js
index 7631c7e435..6f8406b723 100644
--- a/tests/baselines/reference/unionTypeFromArrayLiteral.js
+++ b/tests/baselines/reference/unionTypeFromArrayLiteral.js
@@ -31,7 +31,7 @@ var arr9 = [e, f]; // (E|F)[]
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unionTypesAssignability.js b/tests/baselines/reference/unionTypesAssignability.js
index b9db9a0917..b3e78d3743 100644
--- a/tests/baselines/reference/unionTypesAssignability.js
+++ b/tests/baselines/reference/unionTypesAssignability.js
@@ -87,7 +87,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unknownTypeArgOnCall.js b/tests/baselines/reference/unknownTypeArgOnCall.js
index bd4bdbc968..3408d33eb0 100644
--- a/tests/baselines/reference/unknownTypeArgOnCall.js
+++ b/tests/baselines/reference/unknownTypeArgOnCall.js
@@ -12,7 +12,7 @@ var r = f.clone<Uhhhh>()
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unspecializedConstraints.js b/tests/baselines/reference/unspecializedConstraints.js
index d21e1adc34..a67e8e1c81 100644
--- a/tests/baselines/reference/unspecializedConstraints.js
+++ b/tests/baselines/reference/unspecializedConstraints.js
@@ -167,7 +167,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedClassesinModule1.js b/tests/baselines/reference/unusedClassesinModule1.js
index 888619d512..00c1e87669 100644
--- a/tests/baselines/reference/unusedClassesinModule1.js
+++ b/tests/baselines/reference/unusedClassesinModule1.js
@@ -10,7 +10,7 @@ module A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedIdentifiersConsolidated1.js b/tests/baselines/reference/unusedIdentifiersConsolidated1.js
index 45e2d53319..b669f9d5ac 100644
--- a/tests/baselines/reference/unusedIdentifiersConsolidated1.js
+++ b/tests/baselines/reference/unusedIdentifiersConsolidated1.js
@@ -105,7 +105,7 @@ namespace Greeter {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedImports10.js b/tests/baselines/reference/unusedImports10.js
index 25dc307b92..fb6cdf545a 100644
--- a/tests/baselines/reference/unusedImports10.js
+++ b/tests/baselines/reference/unusedImports10.js
@@ -14,7 +14,7 @@ module B {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedImports2.js b/tests/baselines/reference/unusedImports2.js
index 424c980a93..f9e33b8753 100644
--- a/tests/baselines/reference/unusedImports2.js
+++ b/tests/baselines/reference/unusedImports2.js
@@ -21,7 +21,7 @@ x.handleChar();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedImports3.js b/tests/baselines/reference/unusedImports3.js
index 18750f668c..f7b788e873 100644
--- a/tests/baselines/reference/unusedImports3.js
+++ b/tests/baselines/reference/unusedImports3.js
@@ -24,7 +24,7 @@ test2();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedImports4.js b/tests/baselines/reference/unusedImports4.js
index 4d7e0bb332..eea809a358 100644
--- a/tests/baselines/reference/unusedImports4.js
+++ b/tests/baselines/reference/unusedImports4.js
@@ -25,7 +25,7 @@ test2();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedImports5.js b/tests/baselines/reference/unusedImports5.js
index 1437b8b91d..17a83fad28 100644
--- a/tests/baselines/reference/unusedImports5.js
+++ b/tests/baselines/reference/unusedImports5.js
@@ -25,7 +25,7 @@ test();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedImports6.js b/tests/baselines/reference/unusedImports6.js
index f754e235b9..3c60a5672b 100644
--- a/tests/baselines/reference/unusedImports6.js
+++ b/tests/baselines/reference/unusedImports6.js
@@ -25,7 +25,7 @@ import d from "./file1"
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedImports7.js b/tests/baselines/reference/unusedImports7.js
index 0c3ba963d1..376d8c9fde 100644
--- a/tests/baselines/reference/unusedImports7.js
+++ b/tests/baselines/reference/unusedImports7.js
@@ -23,7 +23,7 @@ import * as n from "./file1"
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedImports8.js b/tests/baselines/reference/unusedImports8.js
index 2b6294f65c..6c40507558 100644
--- a/tests/baselines/reference/unusedImports8.js
+++ b/tests/baselines/reference/unusedImports8.js
@@ -25,7 +25,7 @@ t1();
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedImports9.js b/tests/baselines/reference/unusedImports9.js
index 5f1a45f37a..5b401a5073 100644
--- a/tests/baselines/reference/unusedImports9.js
+++ b/tests/baselines/reference/unusedImports9.js
@@ -21,7 +21,7 @@ import c = require('./file1')
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedInvalidTypeArguments.js b/tests/baselines/reference/unusedInvalidTypeArguments.js
index 5926ff9013..c7667093b8 100644
--- a/tests/baselines/reference/unusedInvalidTypeArguments.js
+++ b/tests/baselines/reference/unusedInvalidTypeArguments.js
@@ -109,7 +109,7 @@ var __extends = (this && this.__extends) || (function () {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedLocalProperty.js b/tests/baselines/reference/unusedLocalProperty.js
index ef9c41c51c..415c4d6e7b 100644
--- a/tests/baselines/reference/unusedLocalProperty.js
+++ b/tests/baselines/reference/unusedLocalProperty.js
@@ -16,7 +16,7 @@ class Animal {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedLocalsAndParameters.js b/tests/baselines/reference/unusedLocalsAndParameters.js
index e4b3490a94..655c1d078a 100644
--- a/tests/baselines/reference/unusedLocalsAndParameters.js
+++ b/tests/baselines/reference/unusedLocalsAndParameters.js
@@ -88,7 +88,7 @@ namespace N {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedLocalsAndParametersDeferred.js b/tests/baselines/reference/unusedLocalsAndParametersDeferred.js
index 4b6cbce4f1..be1c3604e8 100644
--- a/tests/baselines/reference/unusedLocalsAndParametersDeferred.js
+++ b/tests/baselines/reference/unusedLocalsAndParametersDeferred.js
@@ -164,7 +164,7 @@ N;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedLocalsAndParametersOverloadSignatures.js b/tests/baselines/reference/unusedLocalsAndParametersOverloadSignatures.js
index ae887bb7ee..6bc7e38426 100644
--- a/tests/baselines/reference/unusedLocalsAndParametersOverloadSignatures.js
+++ b/tests/baselines/reference/unusedLocalsAndParametersOverloadSignatures.js
@@ -27,7 +27,7 @@ export function genericFunc(details: number, message: any): any {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedLocalsInMethod1.js b/tests/baselines/reference/unusedLocalsInMethod1.js
index 9c4a5213eb..2c487a37ad 100644
--- a/tests/baselines/reference/unusedLocalsInMethod1.js
+++ b/tests/baselines/reference/unusedLocalsInMethod1.js
@@ -9,7 +9,7 @@ class greeter {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedLocalsInMethod2.js b/tests/baselines/reference/unusedLocalsInMethod2.js
index cf25b93466..c57894f00f 100644
--- a/tests/baselines/reference/unusedLocalsInMethod2.js
+++ b/tests/baselines/reference/unusedLocalsInMethod2.js
@@ -10,7 +10,7 @@ class greeter {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedLocalsInMethod3.js b/tests/baselines/reference/unusedLocalsInMethod3.js
index 1b6480078e..bf3e372e22 100644
--- a/tests/baselines/reference/unusedLocalsInMethod3.js
+++ b/tests/baselines/reference/unusedLocalsInMethod3.js
@@ -10,7 +10,7 @@ class greeter {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedMultipleParameters1InMethodDeclaration.js b/tests/baselines/reference/unusedMultipleParameters1InMethodDeclaration.js
index 59a5829bf7..b7c9f88c51 100644
--- a/tests/baselines/reference/unusedMultipleParameters1InMethodDeclaration.js
+++ b/tests/baselines/reference/unusedMultipleParameters1InMethodDeclaration.js
@@ -10,7 +10,7 @@ class Dummy {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedMultipleParameters2InMethodDeclaration.js b/tests/baselines/reference/unusedMultipleParameters2InMethodDeclaration.js
index 06d97116da..a17a73d31f 100644
--- a/tests/baselines/reference/unusedMultipleParameters2InMethodDeclaration.js
+++ b/tests/baselines/reference/unusedMultipleParameters2InMethodDeclaration.js
@@ -10,7 +10,7 @@ class Dummy {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedParametersInLambda1.js b/tests/baselines/reference/unusedParametersInLambda1.js
index b75be92593..78d66f1d1b 100644
--- a/tests/baselines/reference/unusedParametersInLambda1.js
+++ b/tests/baselines/reference/unusedParametersInLambda1.js
@@ -10,7 +10,7 @@ class A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedParametersInLambda2.js b/tests/baselines/reference/unusedParametersInLambda2.js
index 10f5d131ea..14ea047169 100644
--- a/tests/baselines/reference/unusedParametersInLambda2.js
+++ b/tests/baselines/reference/unusedParametersInLambda2.js
@@ -11,7 +11,7 @@ class A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedParametersThis.js b/tests/baselines/reference/unusedParametersThis.js
index 45e379de38..ff33f6b229 100644
--- a/tests/baselines/reference/unusedParametersThis.js
+++ b/tests/baselines/reference/unusedParametersThis.js
@@ -37,7 +37,7 @@ var f2 = function f2(this: A): number {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedPrivateMembers.js b/tests/baselines/reference/unusedPrivateMembers.js
index 370caa430d..3510467635 100644
--- a/tests/baselines/reference/unusedPrivateMembers.js
+++ b/tests/baselines/reference/unusedPrivateMembers.js
@@ -52,7 +52,7 @@ class Test5<T> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedPrivateMethodInClass1.js b/tests/baselines/reference/unusedPrivateMethodInClass1.js
index ec7decda4b..27a523f27e 100644
--- a/tests/baselines/reference/unusedPrivateMethodInClass1.js
+++ b/tests/baselines/reference/unusedPrivateMethodInClass1.js
@@ -10,7 +10,7 @@ class greeter {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedPrivateMethodInClass2.js b/tests/baselines/reference/unusedPrivateMethodInClass2.js
index f7a0bdad58..dff3eaeb4e 100644
--- a/tests/baselines/reference/unusedPrivateMethodInClass2.js
+++ b/tests/baselines/reference/unusedPrivateMethodInClass2.js
@@ -15,7 +15,7 @@ class greeter {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedPrivateMethodInClass3.js b/tests/baselines/reference/unusedPrivateMethodInClass3.js
index bc3e269325..3d25919cb0 100644
--- a/tests/baselines/reference/unusedPrivateMethodInClass3.js
+++ b/tests/baselines/reference/unusedPrivateMethodInClass3.js
@@ -20,7 +20,7 @@ class greeter {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedPrivateMethodInClass4.js b/tests/baselines/reference/unusedPrivateMethodInClass4.js
index 0552eb1c6e..c3fca0c259 100644
--- a/tests/baselines/reference/unusedPrivateMethodInClass4.js
+++ b/tests/baselines/reference/unusedPrivateMethodInClass4.js
@@ -21,7 +21,7 @@ class greeter {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedPrivateVariableInClass4.js b/tests/baselines/reference/unusedPrivateVariableInClass4.js
index de6bbe0d00..f4a88b6f57 100644
--- a/tests/baselines/reference/unusedPrivateVariableInClass4.js
+++ b/tests/baselines/reference/unusedPrivateVariableInClass4.js
@@ -13,7 +13,7 @@ class greeter {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedSingleParameterInMethodDeclaration.js b/tests/baselines/reference/unusedSingleParameterInMethodDeclaration.js
index 5aa6a8b743..f17e6509ac 100644
--- a/tests/baselines/reference/unusedSingleParameterInMethodDeclaration.js
+++ b/tests/baselines/reference/unusedSingleParameterInMethodDeclaration.js
@@ -9,7 +9,7 @@ class Dummy {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedTypeParameterInLambda1.js b/tests/baselines/reference/unusedTypeParameterInLambda1.js
index bfcc70d2d8..4fb75db51f 100644
--- a/tests/baselines/reference/unusedTypeParameterInLambda1.js
+++ b/tests/baselines/reference/unusedTypeParameterInLambda1.js
@@ -11,7 +11,7 @@ class A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedTypeParameterInLambda2.js b/tests/baselines/reference/unusedTypeParameterInLambda2.js
index e9c2c88a6a..135811ad03 100644
--- a/tests/baselines/reference/unusedTypeParameterInLambda2.js
+++ b/tests/baselines/reference/unusedTypeParameterInLambda2.js
@@ -12,7 +12,7 @@ class A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedTypeParameterInMethod1.js b/tests/baselines/reference/unusedTypeParameterInMethod1.js
index b28fffce50..dc9ea72131 100644
--- a/tests/baselines/reference/unusedTypeParameterInMethod1.js
+++ b/tests/baselines/reference/unusedTypeParameterInMethod1.js
@@ -12,7 +12,7 @@ class A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedTypeParameterInMethod2.js b/tests/baselines/reference/unusedTypeParameterInMethod2.js
index 9d737cce6f..19ff86ff3b 100644
--- a/tests/baselines/reference/unusedTypeParameterInMethod2.js
+++ b/tests/baselines/reference/unusedTypeParameterInMethod2.js
@@ -12,7 +12,7 @@ class A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedTypeParameterInMethod3.js b/tests/baselines/reference/unusedTypeParameterInMethod3.js
index 15783e3ec2..80e13e5d88 100644
--- a/tests/baselines/reference/unusedTypeParameterInMethod3.js
+++ b/tests/baselines/reference/unusedTypeParameterInMethod3.js
@@ -12,7 +12,7 @@ class A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedTypeParameterInMethod4.js b/tests/baselines/reference/unusedTypeParameterInMethod4.js
index 5fe8e59a65..5804e52201 100644
--- a/tests/baselines/reference/unusedTypeParameterInMethod4.js
+++ b/tests/baselines/reference/unusedTypeParameterInMethod4.js
@@ -9,7 +9,7 @@ class A {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedTypeParameters2.js b/tests/baselines/reference/unusedTypeParameters2.js
index 1fb1418637..eab94d5483 100644
--- a/tests/baselines/reference/unusedTypeParameters2.js
+++ b/tests/baselines/reference/unusedTypeParameters2.js
@@ -11,7 +11,7 @@ class greeter<typeparameter1, typeparameter2> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedTypeParameters3.js b/tests/baselines/reference/unusedTypeParameters3.js
index 19634509b1..5b14389ed6 100644
--- a/tests/baselines/reference/unusedTypeParameters3.js
+++ b/tests/baselines/reference/unusedTypeParameters3.js
@@ -11,7 +11,7 @@ class greeter<typeparameter1, typeparameter2, typeparameter3> {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedVariablesinNamespaces2.js b/tests/baselines/reference/unusedVariablesinNamespaces2.js
index c479aa8bfd..dde7895634 100644
--- a/tests/baselines/reference/unusedVariablesinNamespaces2.js
+++ b/tests/baselines/reference/unusedVariablesinNamespaces2.js
@@ -14,7 +14,7 @@ namespace Validation {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/unusedVariablesinNamespaces3.js b/tests/baselines/reference/unusedVariablesinNamespaces3.js
index 8462206adf..9b102c1f65 100644
--- a/tests/baselines/reference/unusedVariablesinNamespaces3.js
+++ b/tests/baselines/reference/unusedVariablesinNamespaces3.js
@@ -15,7 +15,7 @@ namespace Validation {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/vararg.js b/tests/baselines/reference/vararg.js
index f99b030af4..476ac9085a 100644
--- a/tests/baselines/reference/vararg.js
+++ b/tests/baselines/reference/vararg.js
@@ -42,7 +42,7 @@ result+=x.fonly("a","b","c","d"); //ok
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/variableDeclaratorResolvedDuringContextualTyping.js b/tests/baselines/reference/variableDeclaratorResolvedDuringContextualTyping.js
index 6f66f73fd7..325a0b5184 100644
--- a/tests/baselines/reference/variableDeclaratorResolvedDuringContextualTyping.js
+++ b/tests/baselines/reference/variableDeclaratorResolvedDuringContextualTyping.js
@@ -129,7 +129,7 @@ class FileService {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/visibilityOfTypeParameters.js b/tests/baselines/reference/visibilityOfTypeParameters.js
index 278ebb5280..ac730683e6 100644
--- a/tests/baselines/reference/visibilityOfTypeParameters.js
+++ b/tests/baselines/reference/visibilityOfTypeParameters.js
@@ -10,7 +10,7 @@ export class MyClass {
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/witness.js b/tests/baselines/reference/witness.js
index 5223630a17..436e3b9dca 100644
--- a/tests/baselines/reference/witness.js
+++ b/tests/baselines/reference/witness.js
@@ -140,7 +140,7 @@ var qq: any;
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/wrappedAndRecursiveConstraints.js b/tests/baselines/reference/wrappedAndRecursiveConstraints.js
index 689185d1cd..bc1f41472f 100644
--- a/tests/baselines/reference/wrappedAndRecursiveConstraints.js
+++ b/tests/baselines/reference/wrappedAndRecursiveConstraints.js
@@ -21,7 +21,7 @@ var r = c.foo(y);
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/wrappedAndRecursiveConstraints3.js b/tests/baselines/reference/wrappedAndRecursiveConstraints3.js
index 0039016b2d..06a13ff283 100644
--- a/tests/baselines/reference/wrappedAndRecursiveConstraints3.js
+++ b/tests/baselines/reference/wrappedAndRecursiveConstraints3.js
@@ -20,7 +20,7 @@ var r2 = r('');
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;
diff --git a/tests/baselines/reference/wrappedAndRecursiveConstraints4.js b/tests/baselines/reference/wrappedAndRecursiveConstraints4.js
index 53bf5b1d34..90e834626c 100644
--- a/tests/baselines/reference/wrappedAndRecursiveConstraints4.js
+++ b/tests/baselines/reference/wrappedAndRecursiveConstraints4.js
@@ -17,7 +17,7 @@ var r2 = r({ length: 3, charAt: (x: number) => { '' } }); // error
 var __names = (this && this.__names) || (function() {
     var name = Object.defineProperty ? (function(proto, name) {
         Object.defineProperty(proto[name], 'name', { 
-            value: name, configurable: true, writable: false, enumerable: false
+            value: name, configurable: true
         });
     }) : (function(proto, name) {
         proto[name].name = name;