Merge branch 'master' into builderAPI

README.md

@@ -1,5 +1,5 @@
-[![Build Status](https://travis-ci.org/Microsoft/TypeScript.svg?branch=master)](https://travis-ci.org/Microsoft/TypeScript)
-[![VSTS Build Status](https://dev.azure.com/typescript/TypeScript/_apis/build/status/Typescript/node10)](https://dev.azure.com/typescript/TypeScript/_build/latest?definitionId=4&view=logs) 
+[![Build Status](https://travis-ci.org/microsoft/TypeScript.svg?branch=master)](https://travis-ci.org/Microsoft/TypeScript)
+[![VSTS Build Status](https://dev.azure.com/typescript/TypeScript/_apis/build/status/Typescript/node10)](https://dev.azure.com/typescript/TypeScript/_build/latest?definitionId=4&view=logs)
 [![npm version](https://badge.fury.io/js/typescript.svg)](https://www.npmjs.com/package/typescript)
 [![Downloads](https://img.shields.io/npm/dm/typescript.svg)](https://www.npmjs.com/package/typescript)
 
@@ -7,7 +7,7 @@
 
 [![Join the chat at https://gitter.im/Microsoft/TypeScript](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/Microsoft/TypeScript?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
-[TypeScript](https://www.typescriptlang.org/) is a language for application-scale JavaScript. TypeScript adds optional types to JavaScript that support tools for large-scale JavaScript applications for any browser, for any host, on any OS. TypeScript compiles to readable, standards-based JavaScript. Try it out at the [playground](https://www.typescriptlang.org/play/), and stay up to date via [our blog](https://blogs.msdn.microsoft.com/typescript) and [Twitter account](https://twitter.com/typescriptlang).
+[TypeScript](https://www.typescriptlang.org/) is a language for application-scale JavaScript. TypeScript adds optional types to JavaScript that support tools for large-scale JavaScript applications for any browser, for any host, on any OS. TypeScript compiles to readable, standards-based JavaScript. Try it out at the [playground](https://www.typescriptlang.org/play/), and stay up to date via [our blog](https://blogs.msdn.microsoft.com/typescript) and [Twitter account](https://twitter.com/typescript).
 
 ## Installing
 
@@ -28,14 +28,14 @@ npm install -g typescript@next
 There are many ways to [contribute](https://github.com/Microsoft/TypeScript/blob/master/CONTRIBUTING.md) to TypeScript.
 * [Submit bugs](https://github.com/Microsoft/TypeScript/issues) and help us verify fixes as they are checked in.
 * Review the [source code changes](https://github.com/Microsoft/TypeScript/pulls).
-* Engage with other TypeScript users and developers on [StackOverflow](https://stackoverflow.com/questions/tagged/typescript). 
+* Engage with other TypeScript users and developers on [StackOverflow](https://stackoverflow.com/questions/tagged/typescript).
 * Join the [#typescript](https://twitter.com/search?q=%23TypeScript) discussion on Twitter.
 * [Contribute bug fixes](https://github.com/Microsoft/TypeScript/blob/master/CONTRIBUTING.md).
 * Read the language specification ([docx](https://github.com/Microsoft/TypeScript/blob/master/doc/TypeScript%20Language%20Specification.docx?raw=true),
  [pdf](https://github.com/Microsoft/TypeScript/blob/master/doc/TypeScript%20Language%20Specification.pdf?raw=true), [md](https://github.com/Microsoft/TypeScript/blob/master/doc/spec.md)).
 
-This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/). For more information see 
-the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [opencode@microsoft.com](mailto:opencode@microsoft.com) 
+This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/). For more information see
+the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [opencode@microsoft.com](mailto:opencode@microsoft.com)
 with any additional questions or comments.
 
 ## Documentation
@@ -71,17 +71,17 @@ npm install
 Use one of the following to build and test:
 
 ```
-gulp local            # Build the compiler into built/local 
-gulp clean            # Delete the built compiler 
+gulp local            # Build the compiler into built/local
+gulp clean            # Delete the built compiler
 gulp LKG              # Replace the last known good with the built one.
                       # Bootstrapping step to be executed when the built compiler reaches a stable state.
-gulp tests            # Build the test infrastructure using the built compiler. 
-gulp runtests         # Run tests using the built compiler and test infrastructure. 
-                      # You can override the host or specify a test for this command. 
-                      # Use --host=<hostName> or --tests=<testPath>. 
+gulp tests            # Build the test infrastructure using the built compiler.
+gulp runtests         # Run tests using the built compiler and test infrastructure.
+                      # You can override the host or specify a test for this command.
+                      # Use --host=<hostName> or --tests=<testPath>.
 gulp baseline-accept  # This replaces the baseline test results with the results obtained from gulp runtests.
 gulp lint             # Runs tslint on the TypeScript source.
-gulp help             # List the above commands. 
+gulp help             # List the above commands.
 ```
 
 

src/compiler/checker.ts

@@ -230,10 +230,10 @@ namespace ts {
             },
             isContextSensitive,
             getFullyQualifiedName,
-            getResolvedSignature: (node, candidatesOutArray, agumentCount) =>
-                getResolvedSignatureWorker(node, candidatesOutArray, agumentCount, CheckMode.Normal),
-            getResolvedSignatureForSignatureHelp: (node, candidatesOutArray, agumentCount) =>
-                getResolvedSignatureWorker(node, candidatesOutArray, agumentCount, CheckMode.IsForSignatureHelp),
+            getResolvedSignature: (node, candidatesOutArray, argumentCount) =>
+                getResolvedSignatureWorker(node, candidatesOutArray, argumentCount, CheckMode.Normal),
+            getResolvedSignatureForSignatureHelp: (node, candidatesOutArray, argumentCount) =>
+                getResolvedSignatureWorker(node, candidatesOutArray, argumentCount, CheckMode.IsForSignatureHelp),
             getExpandedParameters,
             hasEffectiveRestParameter,
             getConstantValue: nodeIn => {
@@ -678,6 +678,7 @@ namespace ts {
 
         let _jsxNamespace: __String;
         let _jsxFactoryEntity: EntityName | undefined;
+        let outofbandVarianceMarkerHandler: ((onlyUnreliable: boolean) => void) | undefined;
 
         const subtypeRelation = createMap<RelationComparisonResult>();
         const assignableRelation = createMap<RelationComparisonResult>();
@@ -3182,7 +3183,7 @@ namespace ts {
                 let containers = getContainersOfSymbol(symbol, enclosingDeclaration);
                 // If we're trying to reference some object literal in, eg `var a = { x: 1 }`, the symbol for the literal, `__object`, is distinct
                 // from the symbol of the declaration it is being assigned to. Since we can use the declaration to refer to the literal, however,
-                // we'd like to make that connection here - potentially causing us to paint the declararation's visibiility, and therefore the literal.
+                // we'd like to make that connection here - potentially causing us to paint the declaration's visibility, and therefore the literal.
                 const firstDecl: Node = first(symbol.declarations);
                 if (!length(containers) && meaning & SymbolFlags.Value && firstDecl && isObjectLiteralExpression(firstDecl)) {
                     if (firstDecl.parent && isVariableDeclaration(firstDecl.parent) && firstDecl === firstDecl.parent.initializer) {
@@ -7731,10 +7732,10 @@ namespace ts {
                 }
             }
             // If the target is a union type or if we are intersecting with types belonging to one of the
-            // disjoint domans, we may end up producing a constraint that hasn't been examined before.
+            // disjoint domains, we may end up producing a constraint that hasn't been examined before.
             if (constraints && (targetIsUnion || hasDisjointDomainType)) {
                 if (hasDisjointDomainType) {
-                    // We add any types belong to one of the disjoint domans because they might cause the final
+                    // We add any types belong to one of the disjoint domains because they might cause the final
                     // intersection operation to reduce the union constraints.
                     for (const t of type.types) {
                         if (t.flags & TypeFlags.DisjointDomains) {
@@ -7784,7 +7785,7 @@ namespace ts {
                     }
                     if (constraintDepth >= 50) {
                         // We have reached 50 recursive invocations of getImmediateBaseConstraint and there is a
-                        // very high likelyhood we're dealing with an infinite generic type that perpetually generates
+                        // very high likelihood we're dealing with an infinite generic type that perpetually generates
                         // new type identities as we descend into it. We stop the recursion here and mark this type
                         // and the outer types as having circular constraints.
                         error(currentNode, Diagnostics.Type_instantiation_is_excessively_deep_and_possibly_infinite);
@@ -10349,8 +10350,16 @@ namespace ts {
             return links.resolvedType;
         }
 
-        function getActualTypeVariable(type: Type) {
-            return type.flags & TypeFlags.Substitution ? (<SubstitutionType>type).typeVariable : type;
+        function getActualTypeVariable(type: Type): Type {
+            if (type.flags & TypeFlags.Substitution) {
+                return (<SubstitutionType>type).typeVariable;
+            }
+            if (type.flags & TypeFlags.IndexedAccess && (
+                (<IndexedAccessType>type).objectType.flags & TypeFlags.Substitution ||
+                (<IndexedAccessType>type).indexType.flags & TypeFlags.Substitution)) {
+                return getIndexedAccessType(getActualTypeVariable((<IndexedAccessType>type).objectType), getActualTypeVariable((<IndexedAccessType>type).indexType));
+            }
+            return type;
         }
 
         /**
@@ -12054,12 +12063,14 @@ namespace ts {
             }
 
             if (!ignoreReturnTypes) {
-                const targetReturnType = (target.declaration && isJSConstructor(target.declaration)) ?
+                // If a signature reolution is already in-flight, skip issuing a circularity error
+                // here and just use the `any` type directly
+                const targetReturnType = isResolvingReturnTypeOfSignature(target) ? anyType : (target.declaration && isJSConstructor(target.declaration)) ?
                     getJSClassType(target.declaration.symbol)! : getReturnTypeOfSignature(target);
                 if (targetReturnType === voidType) {
                     return result;
                 }
-                const sourceReturnType = (source.declaration && isJSConstructor(source.declaration)) ?
+                const sourceReturnType = isResolvingReturnTypeOfSignature(source) ? anyType : (source.declaration && isJSConstructor(source.declaration)) ?
                     getJSClassType(source.declaration.symbol)! : getReturnTypeOfSignature(source);
 
                 // The following block preserves behavior forbidding boolean returning functions from being assignable to type guard returning functions
@@ -12844,7 +12855,7 @@ namespace ts {
                 return result;
             }
 
-            function typeArgumentsRelatedTo(sources: ReadonlyArray<Type> = emptyArray, targets: ReadonlyArray<Type> = emptyArray, variances: ReadonlyArray<Variance> = emptyArray, reportErrors: boolean): Ternary {
+            function typeArgumentsRelatedTo(sources: ReadonlyArray<Type> = emptyArray, targets: ReadonlyArray<Type> = emptyArray, variances: ReadonlyArray<VarianceFlags> = emptyArray, reportErrors: boolean): Ternary {
                 if (sources.length !== targets.length && relation === identityRelation) {
                     return Ternary.False;
                 }
@@ -12854,19 +12865,26 @@ namespace ts {
                     // When variance information isn't available we default to covariance. This happens
                     // in the process of computing variance information for recursive types and when
                     // comparing 'this' type arguments.
-                    const variance = i < variances.length ? variances[i] : Variance.Covariant;
+                    const varianceFlags = i < variances.length ? variances[i] : VarianceFlags.Covariant;
+                    const variance = varianceFlags & VarianceFlags.VarianceMask;
                     // We ignore arguments for independent type parameters (because they're never witnessed).
-                    if (variance !== Variance.Independent) {
+                    if (variance !== VarianceFlags.Independent) {
                         const s = sources[i];
                         const t = targets[i];
                         let related = Ternary.True;
-                        if (variance === Variance.Covariant) {
+                        if (varianceFlags & VarianceFlags.Unmeasurable) {
+                            // Even an `Unmeasurable` variance works out without a structural check if the source and target are _identical_.
+                            // We can't simply assume invariance, because `Unmeasurable` marks nonlinear relations, for example, a relation tained by
+                            // the `-?` modifier in a mapped type (where, no matter how the inputs are related, the outputs still might not be)
+                            related = relation === identityRelation ? isRelatedTo(s, t, /*reportErrors*/ false) : compareTypesIdentical(s, t);
+                        }
+                        else if (variance === VarianceFlags.Covariant) {
                             related = isRelatedTo(s, t, reportErrors);
                         }
-                        else if (variance === Variance.Contravariant) {
+                        else if (variance === VarianceFlags.Contravariant) {
                             related = isRelatedTo(t, s, reportErrors);
                         }
-                        else if (variance === Variance.Bivariant) {
+                        else if (variance === VarianceFlags.Bivariant) {
                             // In the bivariant case we first compare contravariantly without reporting
                             // errors. Then, if that doesn't succeed, we compare covariantly with error
                             // reporting. Thus, error elaboration will be based on the the covariant check,
@@ -13246,21 +13264,20 @@ namespace ts {
                 }
                 return Ternary.False;
 
-                function isNonGeneric(type: Type) {
-                    // If we're already in identity relationship checking, we should use `isRelatedTo`
-                    // to catch the `Maybe` from an excessively deep type (which we then assume means
-                    // that the type could possibly contain a generic)
-                    if (relation === identityRelation) {
-                        return isRelatedTo(type, getPermissiveInstantiation(type)) === Ternary.True;
-                    }
-                    return isTypeIdenticalTo(type, getPermissiveInstantiation(type));
-                }
-
-                function relateVariances(sourceTypeArguments: ReadonlyArray<Type> | undefined, targetTypeArguments: ReadonlyArray<Type> | undefined, variances: Variance[]) {
+                function relateVariances(sourceTypeArguments: ReadonlyArray<Type> | undefined, targetTypeArguments: ReadonlyArray<Type> | undefined, variances: VarianceFlags[]) {
                     if (result = typeArgumentsRelatedTo(sourceTypeArguments, targetTypeArguments, variances, reportErrors)) {
                         return result;
                     }
-                    const allowStructuralFallback = (targetTypeArguments && hasCovariantVoidArgument(targetTypeArguments, variances)) || isNonGeneric(source) || isNonGeneric(target);
+                    if (some(variances, v => !!(v & VarianceFlags.AllowsStructuralFallback))) {
+                        // If some type parameter was `Unmeasurable` or `Unreliable`, and we couldn't pass by assuming it was identical, then we
+                        // have to allow a structural fallback check
+                        // We elide the variance-based error elaborations, since those might not be too helpful, since we'll potentially
+                        // be assuming identity of the type parameter.
+                        originalErrorInfo = undefined;
+                        errorInfo = saveErrorInfo;
+                        return undefined;
+                    }
+                    const allowStructuralFallback = targetTypeArguments && hasCovariantVoidArgument(targetTypeArguments, variances);
                     varianceCheckFailed = !allowStructuralFallback;
                     // The type arguments did not relate appropriately, but it may be because we have no variance
                     // information (in which case typeArgumentsRelatedTo defaulted to covariance for all type
@@ -13278,7 +13295,7 @@ namespace ts {
                         // reveal the reason).
                         // We can switch on `reportErrors` here, since varianceCheckFailed guarantees we return `False`,
                         // we can return `False` early here to skip calculating the structural error message we don't need.
-                        if (varianceCheckFailed && !(reportErrors && some(variances, v => v === Variance.Invariant))) {
+                        if (varianceCheckFailed && !(reportErrors && some(variances, v => (v & VarianceFlags.VarianceMask) === VarianceFlags.Invariant))) {
                             return Ternary.False;
                         }
                         // We remember the original error information so we can restore it in case the structural
@@ -13290,6 +13307,20 @@ namespace ts {
                 }
             }
 
+            function reportUnmeasurableMarkers(p: TypeParameter) {
+                if (outofbandVarianceMarkerHandler && (p === markerSuperType || p === markerSubType || p === markerOtherType)) {
+                    outofbandVarianceMarkerHandler(/*onlyUnreliable*/ false);
+                }
+                return p;
+            }
+
+            function reportUnreliableMarkers(p: TypeParameter) {
+                if (outofbandVarianceMarkerHandler && (p === markerSuperType || p === markerSubType || p === markerOtherType)) {
+                    outofbandVarianceMarkerHandler(/*onlyUnreliable*/ true);
+                }
+                return p;
+            }
+
             // A type [P in S]: X is related to a type [Q in T]: Y if T is related to S and X' is
             // related to Y, where X' is an instantiation of X in which P is replaced with Q. Notice
             // that S and T are contra-variant whereas X and Y are co-variant.
@@ -13298,7 +13329,9 @@ namespace ts {
                         getCombinedMappedTypeOptionality(source) <= getCombinedMappedTypeOptionality(target));
                 if (modifiersRelated) {
                     let result: Ternary;
-                    if (result = isRelatedTo(getConstraintTypeFromMappedType(target), getConstraintTypeFromMappedType(source), reportErrors)) {
+                    const targetConstraint = getConstraintTypeFromMappedType(target);
+                    const sourceConstraint = instantiateType(getConstraintTypeFromMappedType(source), getCombinedMappedTypeOptionality(source) < 0 ? reportUnmeasurableMarkers : reportUnreliableMarkers);
+                    if (result = isRelatedTo(targetConstraint, sourceConstraint, reportErrors)) {
                         const mapper = createTypeMapper([getTypeParameterFromMappedType(source)], [getTypeParameterFromMappedType(target)]);
                         return result & isRelatedTo(instantiateType(getTemplateTypeFromMappedType(source), mapper), getTemplateTypeFromMappedType(target), reportErrors);
                     }
@@ -13888,26 +13921,45 @@ namespace ts {
         // instantiations of the generic type for type arguments with known relations. The function
         // returns the emptyArray singleton if we're not in strictFunctionTypes mode or if the function
         // has been invoked recursively for the given generic type.
-        function getVariancesWorker<TCache extends { variances?: Variance[] }>(typeParameters: ReadonlyArray<TypeParameter> = emptyArray, cache: TCache, createMarkerType: (input: TCache, param: TypeParameter, marker: Type) => Type): Variance[] {
+        function getVariancesWorker<TCache extends { variances?: VarianceFlags[] }>(typeParameters: ReadonlyArray<TypeParameter> = emptyArray, cache: TCache, createMarkerType: (input: TCache, param: TypeParameter, marker: Type) => Type): VarianceFlags[] {
             let variances = cache.variances;
             if (!variances) {
                 // The emptyArray singleton is used to signal a recursive invocation.
                 cache.variances = emptyArray;
                 variances = [];
                 for (const tp of typeParameters) {
+                    let unmeasurable = false;
+                    let unreliable = false;
+                    const oldHandler = outofbandVarianceMarkerHandler;
+                    outofbandVarianceMarkerHandler = (onlyUnreliable) => onlyUnreliable ? unreliable = true : unmeasurable = true;
                     // We first compare instantiations where the type parameter is replaced with
                     // marker types that have a known subtype relationship. From this we can infer
                     // invariance, covariance, contravariance or bivariance.
                     const typeWithSuper = createMarkerType(cache, tp, markerSuperType);
                     const typeWithSub = createMarkerType(cache, tp, markerSubType);
-                    let variance = (isTypeAssignableTo(typeWithSub, typeWithSuper) ? Variance.Covariant : 0) |
-                        (isTypeAssignableTo(typeWithSuper, typeWithSub) ? Variance.Contravariant : 0);
+                    let variance = (isTypeAssignableTo(typeWithSub, typeWithSuper) ? VarianceFlags.Covariant : 0) |
+                        (isTypeAssignableTo(typeWithSuper, typeWithSub) ? VarianceFlags.Contravariant : 0);
                     // If the instantiations appear to be related bivariantly it may be because the
                     // type parameter is independent (i.e. it isn't witnessed anywhere in the generic
                     // type). To determine this we compare instantiations where the type parameter is
                     // replaced with marker types that are known to be unrelated.
-                    if (variance === Variance.Bivariant && isTypeAssignableTo(createMarkerType(cache, tp, markerOtherType), typeWithSuper)) {
-                        variance = Variance.Independent;
+                    if (variance === VarianceFlags.Bivariant && isTypeAssignableTo(createMarkerType(cache, tp, markerOtherType), typeWithSuper)) {
+                        variance = VarianceFlags.Independent;
+                    }
+                    outofbandVarianceMarkerHandler = oldHandler;
+                    if (unmeasurable || unreliable) {
+                        if (unmeasurable) {
+                            variance |= VarianceFlags.Unmeasurable;
+                        }
+                        if (unreliable) {
+                            variance |= VarianceFlags.Unreliable;
+                        }
+                        const covariantID = getRelationKey(typeWithSub, typeWithSuper, assignableRelation);
+                        const contravariantID = getRelationKey(typeWithSuper, typeWithSub, assignableRelation);
+                        // We delete the results of these checks, as we want them to actually be run, see the `Unmeasurable` variance we cache,
+                        // And then fall back to a structural result.
+                        assignableRelation.delete(covariantID);
+                        assignableRelation.delete(contravariantID);
                     }
                     variances.push(variance);
                 }
@@ -13916,7 +13968,7 @@ namespace ts {
             return variances;
         }
 
-        function getVariances(type: GenericType): Variance[] {
+        function getVariances(type: GenericType): VarianceFlags[] {
             // Arrays and tuples are known to be covariant, no need to spend time computing this (emptyArray implies covariance for all parameters)
             if (type === globalArrayType || type === globalReadonlyArrayType || type.objectFlags & ObjectFlags.Tuple) {
                 return emptyArray;
@@ -13926,9 +13978,9 @@ namespace ts {
 
         // Return true if the given type reference has a 'void' type argument for a covariant type parameter.
         // See comment at call in recursiveTypeRelatedTo for when this case matters.
-        function hasCovariantVoidArgument(typeArguments: ReadonlyArray<Type>, variances: Variance[]): boolean {
+        function hasCovariantVoidArgument(typeArguments: ReadonlyArray<Type>, variances: VarianceFlags[]): boolean {
             for (let i = 0; i < variances.length; i++) {
-                if (variances[i] === Variance.Covariant && typeArguments[i].flags & TypeFlags.Void) {
+                if ((variances[i] & VarianceFlags.VarianceMask) === VarianceFlags.Covariant && typeArguments[i].flags & TypeFlags.Void) {
                     return true;
                 }
             }
@@ -15030,6 +15082,9 @@ namespace ts {
                         target = removeTypesFromUnionOrIntersection(<UnionOrIntersectionType>target, matchingTypes);
                     }
                 }
+                else if (target.flags & (TypeFlags.IndexedAccess | TypeFlags.Substitution)) {
+                    target = getActualTypeVariable(target);
+                }
                 if (target.flags & TypeFlags.TypeVariable) {
                     // If target is a type parameter, make an inference, unless the source type contains
                     // the anyFunctionType (the wildcard type that's used to avoid contextually typing functions).
@@ -15091,9 +15146,6 @@ namespace ts {
                         }
                     }
                 }
-                else if (target.flags & TypeFlags.Substitution) {
-                    inferFromTypes(source, (target as SubstitutionType).typeVariable);
-                }
                 if (getObjectFlags(source) & ObjectFlags.Reference && getObjectFlags(target) & ObjectFlags.Reference && (<TypeReference>source).target === (<TypeReference>target).target) {
                     // If source and target are references to the same generic type, infer from type arguments
                     const sourceTypes = (<TypeReference>source).typeArguments || emptyArray;
@@ -15101,7 +15153,7 @@ namespace ts {
                     const count = sourceTypes.length < targetTypes.length ? sourceTypes.length : targetTypes.length;
                     const variances = getVariances((<TypeReference>source).target);
                     for (let i = 0; i < count; i++) {
-                        if (i < variances.length && variances[i] === Variance.Contravariant) {
+                        if (i < variances.length && (variances[i] & VarianceFlags.VarianceMask) === VarianceFlags.Contravariant) {
                             inferFromContravariantTypes(sourceTypes[i], targetTypes[i]);
                         }
                         else {
@@ -20952,7 +21004,7 @@ namespace ts {
                 // of the argument is a tuple type, spread the tuple elements into the argument list. We can
                 // call checkExpressionCached because spread expressions never have a contextual type.
                 const spreadArgument = <SpreadElement>args[length - 1];
-                const type = checkExpressionCached(spreadArgument.expression);
+                const type = flowLoopCount ? checkExpression(spreadArgument.expression) : checkExpressionCached(spreadArgument.expression);
                 if (isTupleType(type)) {
                     const typeArguments = (<TypeReference>type).typeArguments || emptyArray;
                     const restIndex = type.target.hasRestElement ? typeArguments.length - 1 : -1;
@@ -23079,7 +23131,19 @@ namespace ts {
             // Grammar checking
             if (produceDiagnostics) {
                 if (!(node.flags & NodeFlags.AwaitContext)) {
-                    grammarErrorOnFirstToken(node, Diagnostics.await_expression_is_only_allowed_within_an_async_function);
+                    // use of 'await' in non-async function
+                    const sourceFile = getSourceFileOfNode(node);
+                    if (!hasParseDiagnostics(sourceFile)) {
+                        const span = getSpanOfTokenAtPosition(sourceFile, node.pos);
+                        const diagnostic = createFileDiagnostic(sourceFile, span.start, span.length, Diagnostics.await_expression_is_only_allowed_within_an_async_function);
+                        const func = getContainingFunction(node);
+                        if (func && func.kind !== SyntaxKind.Constructor) {
+                            Debug.assert((getFunctionFlags(func) & FunctionFlags.Async) === 0, "Enclosing function should never be an async function.");
+                            const relatedInfo = createDiagnosticForNode(func, Diagnostics.Did_you_mean_to_mark_this_function_as_async);
+                            addRelatedInfo(diagnostic, relatedInfo);
+                        }
+                        diagnostics.add(diagnostic);
+                    }
                 }
 
                 if (isInParameterInitializerBeforeContainingFunction(node)) {
@@ -31577,7 +31641,20 @@ namespace ts {
 
             if (forInOrOfStatement.kind === SyntaxKind.ForOfStatement && forInOrOfStatement.awaitModifier) {
                 if ((forInOrOfStatement.flags & NodeFlags.AwaitContext) === NodeFlags.None) {
-                    return grammarErrorOnNode(forInOrOfStatement.awaitModifier, Diagnostics.A_for_await_of_statement_is_only_allowed_within_an_async_function_or_async_generator);
+                    // use of 'for-await-of' in non-async function
+                    const sourceFile = getSourceFileOfNode(forInOrOfStatement);
+                    if (!hasParseDiagnostics(sourceFile)) {
+                        const diagnostic = createDiagnosticForNode(forInOrOfStatement.awaitModifier, Diagnostics.A_for_await_of_statement_is_only_allowed_within_an_async_function_or_async_generator);
+                        const func = getContainingFunction(forInOrOfStatement);
+                        if (func && func.kind !== SyntaxKind.Constructor) {
+                            Debug.assert((getFunctionFlags(func) & FunctionFlags.Async) === 0, "Enclosing function should never be an async function.");
+                            const relatedInfo = createDiagnosticForNode(func, Diagnostics.Did_you_mean_to_mark_this_function_as_async);
+                            addRelatedInfo(diagnostic, relatedInfo);
+                        }
+                        diagnostics.add(diagnostic);
+                        return true;
+                    }
+                    return false;
                 }
             }
 
@@ -31752,6 +31829,9 @@ namespace ts {
                         return grammarErrorAtPos(node, node.end - 1, ";".length, Diagnostics._0_expected, "{");
                     }
                 }
+                else if (isClassLike(node.parent) && isStringLiteral(node.name) && node.name.text === "constructor" && (!compilerOptions.target || compilerOptions.target < ScriptTarget.ES5)) {
+                    return grammarErrorOnNode(node.name, Diagnostics.Quoted_constructors_have_previously_been_interpreted_as_methods_which_is_incorrect_In_TypeScript_3_6_they_will_be_correctly_parsed_as_constructors_In_the_meantime_consider_using_constructor_to_write_a_constructor_or_constructor_to_write_a_method);
+                }
                 if (checkGrammarForGenerator(node)) {
                     return true;
                 }
@@ -32070,6 +32150,9 @@ namespace ts {
 
         function checkGrammarProperty(node: PropertyDeclaration | PropertySignature) {
             if (isClassLike(node.parent)) {
+                if (isStringLiteral(node.name) && node.name.text === "constructor") {
+                    return grammarErrorOnNode(node.name, Diagnostics.Classes_may_not_have_a_field_named_constructor);
+                }
                 if (checkGrammarForInvalidDynamicName(node.name, Diagnostics.A_computed_property_name_in_a_class_property_declaration_must_refer_to_an_expression_whose_type_is_a_literal_type_or_a_unique_symbol_type)) {
                     return true;
                 }

src/compiler/commandLineParser.ts

@@ -1984,8 +1984,8 @@ namespace ts {
      * @param basePath A root directory to resolve relative path entries in the config
      *    file to. e.g. outDir
      */
-    export function parseJsonConfigFileContent(json: any, host: ParseConfigHost, basePath: string, existingOptions?: CompilerOptions, configFileName?: string, resolutionStack?: Path[], extraFileExtensions?: ReadonlyArray<FileExtensionInfo>): ParsedCommandLine {
-        return parseJsonConfigFileContentWorker(json, /*sourceFile*/ undefined, host, basePath, existingOptions, configFileName, resolutionStack, extraFileExtensions);
+    export function parseJsonConfigFileContent(json: any, host: ParseConfigHost, basePath: string, existingOptions?: CompilerOptions, configFileName?: string, resolutionStack?: Path[], extraFileExtensions?: ReadonlyArray<FileExtensionInfo>, extendedConfigCache?: Map<ExtendedConfigCacheEntry>): ParsedCommandLine {
+        return parseJsonConfigFileContentWorker(json, /*sourceFile*/ undefined, host, basePath, existingOptions, configFileName, resolutionStack, extraFileExtensions, extendedConfigCache);
     }
 
     /**
@@ -1995,7 +1995,7 @@ namespace ts {
      * @param basePath A root directory to resolve relative path entries in the config
      *    file to. e.g. outDir
      */
-    export function parseJsonSourceFileConfigFileContent(sourceFile: TsConfigSourceFile, host: ParseConfigHost, basePath: string, existingOptions?: CompilerOptions, configFileName?: string, resolutionStack?: Path[], extraFileExtensions?: ReadonlyArray<FileExtensionInfo>, /*@internal*/ extendedConfigCache?: Map<ExtendedConfigCacheEntry>): ParsedCommandLine {
+    export function parseJsonSourceFileConfigFileContent(sourceFile: TsConfigSourceFile, host: ParseConfigHost, basePath: string, existingOptions?: CompilerOptions, configFileName?: string, resolutionStack?: Path[], extraFileExtensions?: ReadonlyArray<FileExtensionInfo>, extendedConfigCache?: Map<ExtendedConfigCacheEntry>): ParsedCommandLine {
         return parseJsonConfigFileContentWorker(/*json*/ undefined, sourceFile, host, basePath, existingOptions, configFileName, resolutionStack, extraFileExtensions, extendedConfigCache);
     }
 

src/compiler/core.ts

@@ -239,7 +239,7 @@ namespace ts {
                     }
 
                     // When the deleted entry was the last one, we need to
-                    // adust the lastEntry reference.
+                    // adjust the lastEntry reference.
                     if (this.lastEntry === entry) {
                         this.lastEntry = previousEntry;
                     }
@@ -1255,7 +1255,7 @@ namespace ts {
     }
 
     /**
-     * Returns the only element of an array if it contains only one element; otheriwse, returns the
+     * Returns the only element of an array if it contains only one element; otherwise, returns the
      * array.
      */
     export function singleOrMany<T>(array: T[]): T | T[];
@@ -1400,8 +1400,8 @@ namespace ts {
     /** Shims `Array.from`. */
     export function arrayFrom<T, U>(iterator: Iterator<T> | IterableIterator<T>, map: (t: T) => U): U[];
     export function arrayFrom<T>(iterator: Iterator<T> | IterableIterator<T>): T[];
-    export function arrayFrom(iterator: Iterator<any> | IterableIterator<any>, map?: (t: any) => any): any[] {
-        const result: any[] = [];
+    export function arrayFrom<T, U>(iterator: Iterator<T> | IterableIterator<T>, map?: (t: T) => U): (T | U)[] {
+        const result: (T | U)[] = [];
         for (let { value, done } = iterator.next(); !done; { value, done } = iterator.next()) {
             result.push(map ? map(value) : value);
         }

src/compiler/diagnosticMessages.json

@@ -1035,6 +1035,10 @@
         "category": "Error",
         "code": 1355
     },
+    "Did you mean to mark this function as 'async'?": {
+        "category": "Error",
+        "code": 1356
+    },
 
     "Duplicate identifier '{0}'.": {
         "category": "Error",
@@ -2959,7 +2963,7 @@
         "category": "Error",
         "code": 4104
     },
-    
+
     "The current host does not support the '{0}' option.": {
         "category": "Error",
         "code": 5001
@@ -4958,8 +4962,29 @@
         "category": "Message",
         "code": 95076
     },
+    "Extract type": {
+        "category": "Message",
+        "code": 95077
+    },
+    "Extract to type alias": {
+        "category": "Message",
+        "code": 95078
+    },
+    "Extract to typedef": {
+        "category": "Message",
+        "code": 95079
+    },
+
     "No value exists in scope for the shorthand property '{0}'. Either declare one or provide an initializer." :{
         "category": "Error",
         "code": 18004
+    },
+    "Quoted constructors have previously been interpreted as methods, which is incorrect. In TypeScript 3.6, they will be correctly parsed as constructors. In the meantime, consider using 'constructor()' to write a constructor, or '[\"constructor\"]()' to write a method.": {
+        "category": "Error",
+        "code": 18005
+    },
+    "Classes may not have a field named 'constructor'.": {
+        "category": "Error",
+        "code": 18006
     }
 }

src/compiler/emitter.ts

@@ -222,7 +222,7 @@ namespace ts {
 
     /*@internal*/
     // targetSourceFile is when users only want one file in entire project to be emitted. This is used in compileOnSave feature
-    export function emitFiles(resolver: EmitResolver, host: EmitHost, targetSourceFile: SourceFile | undefined, emitOnlyDtsFiles?: boolean, transformers?: TransformerFactory<Bundle | SourceFile>[], declarationTransformers?: TransformerFactory<Bundle | SourceFile>[], onlyBuildInfo?: boolean): EmitResult {
+    export function emitFiles(resolver: EmitResolver, host: EmitHost, targetSourceFile: SourceFile | undefined, { scriptTransformers, declarationTransformers }: EmitTransformers, emitOnlyDtsFiles?: boolean, onlyBuildInfo?: boolean): EmitResult {
         const compilerOptions = host.getCompilerOptions();
         const sourceMapDataList: SourceMapEmitResult[] | undefined = (compilerOptions.sourceMap || compilerOptions.inlineSourceMap || getAreDeclarationMapsEnabled(compilerOptions)) ? [] : undefined;
         const emittedFilesList: string[] | undefined = compilerOptions.listEmittedFiles ? [] : undefined;
@@ -303,7 +303,7 @@ namespace ts {
                 return;
             }
             // Transform the source files
-            const transform = transformNodes(resolver, host, compilerOptions, [sourceFileOrBundle], transformers!, /*allowDtsFiles*/ false);
+            const transform = transformNodes(resolver, host, compilerOptions, [sourceFileOrBundle], scriptTransformers, /*allowDtsFiles*/ false);
 
             const printerOptions: PrinterOptions = {
                 removeComments: compilerOptions.removeComments,
@@ -349,7 +349,7 @@ namespace ts {
                 // Do that here when emitting only dts files
                 nonJsFiles.forEach(collectLinkedAliases);
             }
-            const declarationTransform = transformNodes(resolver, host, compilerOptions, inputListOrBundle, concatenate([transformDeclarations], declarationTransformers), /*allowDtsFiles*/ false);
+            const declarationTransform = transformNodes(resolver, host, compilerOptions, inputListOrBundle, declarationTransformers, /*allowDtsFiles*/ false);
             if (length(declarationTransform.diagnostics)) {
                 for (const diagnostic of declarationTransform.diagnostics!) {
                     emitterDiagnostics.add(diagnostic);
@@ -728,7 +728,12 @@ namespace ts {
             useCaseSensitiveFileNames: () => host.useCaseSensitiveFileNames(),
             getProgramBuildInfo: returnUndefined
         };
-        emitFiles(notImplementedResolver, emitHost, /*targetSourceFile*/ undefined, /*emitOnlyDtsFiles*/ false, getTransformers(config.options, customTransformers));
+        emitFiles(
+            notImplementedResolver,
+            emitHost,
+            /*targetSourceFile*/ undefined,
+            getTransformers(config.options, customTransformers)
+        );
         return outputFiles;
     }
 

src/compiler/factory.ts

@@ -1004,10 +1004,10 @@ namespace ts {
             : node;
     }
 
-    export function createPropertyAccess(expression: Expression, name: string | Identifier | undefined) {
+    export function createPropertyAccess(expression: Expression, name: string | Identifier) {
         const node = <PropertyAccessExpression>createSynthesizedNode(SyntaxKind.PropertyAccessExpression);
         node.expression = parenthesizeForAccess(expression);
-        node.name = asName(name)!; // TODO: GH#18217
+        node.name = asName(name);
         setEmitFlags(node, EmitFlags.NoIndentation);
         return node;
     }
@@ -2468,7 +2468,7 @@ namespace ts {
 
     export function createSpreadAssignment(expression: Expression) {
         const node = <SpreadAssignment>createSynthesizedNode(SyntaxKind.SpreadAssignment);
-        node.expression = expression !== undefined ? parenthesizeExpressionForList(expression) : undefined!; // TODO: GH#18217
+        node.expression = parenthesizeExpressionForList(expression);
         return node;
     }
 
@@ -2949,7 +2949,7 @@ namespace ts {
         return node;
     }
 
-    export function updateBundle(node: Bundle, sourceFiles: ReadonlyArray<SourceFile>, prepends: ReadonlyArray<UnparsedSource> = emptyArray) {
+    export function updateBundle(node: Bundle, sourceFiles: ReadonlyArray<SourceFile>, prepends: ReadonlyArray<UnparsedSource | InputFiles> = emptyArray) {
         if (node.sourceFiles !== sourceFiles || node.prepends !== prepends) {
             return createBundle(sourceFiles, prepends);
         }

src/compiler/parser.ts

@@ -1328,6 +1328,8 @@ namespace ts {
             return node;
         }
 
+        function createMissingNode<T extends Node>(kind: T["kind"], reportAtCurrentPosition: false, diagnosticMessage?: DiagnosticMessage, arg0?: any): T;
+        function createMissingNode<T extends Node>(kind: T["kind"], reportAtCurrentPosition: boolean, diagnosticMessage: DiagnosticMessage, arg0?: any): T;
         function createMissingNode<T extends Node>(kind: T["kind"], reportAtCurrentPosition: boolean, diagnosticMessage: DiagnosticMessage, arg0?: any): T {
             if (reportAtCurrentPosition) {
                 parseErrorAtPosition(scanner.getStartPos(), 0, diagnosticMessage, arg0);
@@ -3122,15 +3124,16 @@ namespace ts {
         }
 
         function parseUnionOrIntersectionType(kind: SyntaxKind.UnionType | SyntaxKind.IntersectionType, parseConstituentType: () => TypeNode, operator: SyntaxKind.BarToken | SyntaxKind.AmpersandToken): TypeNode {
-            parseOptional(operator);
+            const start = scanner.getStartPos();
+            const hasLeadingOperator = parseOptional(operator);
             let type = parseConstituentType();
-            if (token() === operator) {
+            if (token() === operator || hasLeadingOperator) {
                 const types = [type];
                 while (parseOptional(operator)) {
                     types.push(parseConstituentType());
                 }
-                const node = <UnionOrIntersectionTypeNode>createNode(kind, type.pos);
-                node.types = createNodeArray(types, type.pos);
+                const node = <UnionOrIntersectionTypeNode>createNode(kind, start);
+                node.types = createNodeArray(types, start);
                 type = finishNode(node);
             }
             return type;
@@ -4290,7 +4293,7 @@ namespace ts {
                     badNode.end = invalidElement.end;
                     badNode.left = result;
                     badNode.right = invalidElement;
-                    badNode.operatorToken = createMissingNode(SyntaxKind.CommaToken, /*reportAtCurrentPosition*/ false, /*diagnosticMessage*/ undefined!); // TODO: GH#18217
+                    badNode.operatorToken = createMissingNode(SyntaxKind.CommaToken, /*reportAtCurrentPosition*/ false);
                     badNode.operatorToken.pos = badNode.operatorToken.end = badNode.right.pos;
                     return <JsxElement><Node>badNode;
                 }

src/compiler/program.ts

@@ -1453,9 +1453,8 @@ namespace ts {
                 notImplementedResolver,
                 getEmitHost(writeFileCallback),
                 /*targetSourceFile*/ undefined,
+                /*transformers*/ noTransformers,
                 /*emitOnlyDtsFiles*/ false,
-                /*transformers*/ undefined,
-                /*declaraitonTransformers*/ undefined,
                 /*onlyBuildInfo*/ true
             );
 
@@ -1574,14 +1573,12 @@ namespace ts {
 
             performance.mark("beforeEmit");
 
-            const transformers = emitOnlyDtsFiles ? [] : getTransformers(options, customTransformers);
             const emitResult = emitFiles(
                 emitResolver,
                 getEmitHost(writeFileCallback),
                 sourceFile,
+                getTransformers(options, customTransformers, emitOnlyDtsFiles),
                 emitOnlyDtsFiles,
-                transformers,
-                customTransformers && customTransformers.afterDeclarations
             );
 
             performance.mark("afterEmit");
@@ -2688,6 +2685,7 @@ namespace ts {
                     return undefined;
                 }
                 sourceFile = Debug.assertDefined(commandLine.options.configFile);
+                Debug.assert(!sourceFile.path || sourceFile.path === sourceFilePath);
                 addFileToFilesByName(sourceFile, sourceFilePath, /*redirectedPath*/ undefined);
             }
             else {
@@ -2699,11 +2697,12 @@ namespace ts {
                     projectReferenceRedirects.set(sourceFilePath, false);
                     return undefined;
                 }
-                sourceFile.path = sourceFilePath;
-                sourceFile.resolvedPath = sourceFilePath;
-                sourceFile.originalFileName = refPath;
                 commandLine = parseJsonSourceFileConfigFileContent(sourceFile, configParsingHost, basePath, /*existingOptions*/ undefined, refPath);
             }
+            sourceFile.path = sourceFilePath;
+            sourceFile.resolvedPath = sourceFilePath;
+            sourceFile.originalFileName = refPath;
+
             const resolvedRef: ResolvedProjectReference = { commandLine, sourceFile };
             projectReferenceRedirects.set(sourceFilePath, resolvedRef);
             if (commandLine.projectReferences) {
@@ -2768,10 +2767,8 @@ namespace ts {
             if (options.composite) {
                 const rootPaths = rootNames.map(toPath);
                 for (const file of files) {
-                    // Ignore declaration files
-                    if (file.isDeclarationFile) continue;
-                    // Ignore json file thats from project reference
-                    if (isJsonSourceFile(file) && getResolvedProjectReferenceToRedirect(file.fileName)) continue;
+                    // Ignore file that is not emitted
+                    if (!sourceFileMayBeEmitted(file, options, isSourceFileFromExternalLibrary, getResolvedProjectReferenceToRedirect)) continue;
                     if (rootPaths.indexOf(file.path) === -1) {
                         programDiagnostics.add(createCompilerDiagnostic(Diagnostics.File_0_is_not_in_project_file_list_Projects_must_list_all_files_or_use_an_include_pattern, file.fileName));
                     }

src/compiler/transformer.ts

@@ -24,13 +24,24 @@ namespace ts {
         EmitNotifications = 1 << 1,
     }
 
-    export function getTransformers(compilerOptions: CompilerOptions, customTransformers?: CustomTransformers) {
+    export const noTransformers: EmitTransformers = { scriptTransformers: emptyArray, declarationTransformers: emptyArray };
+
+    export function getTransformers(compilerOptions: CompilerOptions, customTransformers?: CustomTransformers, emitOnlyDtsFiles?: boolean): EmitTransformers {
+        return {
+            scriptTransformers: getScriptTransformers(compilerOptions, customTransformers, emitOnlyDtsFiles),
+            declarationTransformers: getDeclarationTransformers(customTransformers),
+        };
+    }
+
+    function getScriptTransformers(compilerOptions: CompilerOptions, customTransformers?: CustomTransformers, emitOnlyDtsFiles?: boolean) {
+        if (emitOnlyDtsFiles) return emptyArray;
+
         const jsx = compilerOptions.jsx;
         const languageVersion = getEmitScriptTarget(compilerOptions);
         const moduleKind = getEmitModuleKind(compilerOptions);
         const transformers: TransformerFactory<SourceFile | Bundle>[] = [];
 
-        addRange(transformers, customTransformers && customTransformers.before);
+        addRange(transformers, customTransformers && map(customTransformers.before, wrapScriptTransformerFactory));
 
         transformers.push(transformTypeScript);
 
@@ -71,11 +82,44 @@ namespace ts {
             transformers.push(transformES5);
         }
 
-        addRange(transformers, customTransformers && customTransformers.after);
-
+        addRange(transformers, customTransformers && map(customTransformers.after, wrapScriptTransformerFactory));
         return transformers;
     }
 
+    function getDeclarationTransformers(customTransformers?: CustomTransformers) {
+        const transformers: TransformerFactory<SourceFile | Bundle>[] = [];
+        transformers.push(transformDeclarations);
+        addRange(transformers, customTransformers && map(customTransformers.afterDeclarations, wrapDeclarationTransformerFactory));
+        return transformers;
+    }
+
+    /**
+     * Wrap a custom script or declaration transformer object in a `Transformer` callback with fallback support for transforming bundles.
+     */
+    function wrapCustomTransformer(transformer: CustomTransformer): Transformer<Bundle | SourceFile> {
+        return node => isBundle(node) ? transformer.transformBundle(node) : transformer.transformSourceFile(node);
+    }
+
+    /**
+     * Wrap a transformer factory that may return a custom script or declaration transformer object.
+     */
+    function wrapCustomTransformerFactory<T extends SourceFile | Bundle>(transformer: TransformerFactory<T> | CustomTransformerFactory, handleDefault: (node: Transformer<T>) => Transformer<Bundle | SourceFile>): TransformerFactory<Bundle | SourceFile> {
+        return context => {
+            const customTransformer = transformer(context);
+            return typeof customTransformer === "function"
+                ? handleDefault(customTransformer)
+                : wrapCustomTransformer(customTransformer);
+        };
+    }
+
+    function wrapScriptTransformerFactory(transformer: TransformerFactory<SourceFile> | CustomTransformerFactory): TransformerFactory<Bundle | SourceFile> {
+        return wrapCustomTransformerFactory(transformer, chainBundle);
+    }
+
+    function wrapDeclarationTransformerFactory(transformer: TransformerFactory<Bundle | SourceFile> | CustomTransformerFactory): TransformerFactory<Bundle | SourceFile> {
+        return wrapCustomTransformerFactory(transformer, identity);
+    }
+
     export function noEmitSubstitution(_hint: EmitHint, node: Node) {
         return node;
     }

src/compiler/transformers/destructuring.ts

@@ -521,8 +521,10 @@ namespace ts {
                 for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
                     t[p] = s[p];
                 if (s != null && typeof Object.getOwnPropertySymbols === "function")
-                    for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-                        t[p[i]] = s[p[i]];
+                    for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+                        if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                            t[p[i]] = s[p[i]];
+                    }
                 return t;
             };`
     };

src/compiler/transformers/es2015.ts

@@ -1639,7 +1639,7 @@ namespace ts {
             // arguments are both mapped contiguously to the accessor name.
             const target = getMutableClone(receiver);
             setEmitFlags(target, EmitFlags.NoComments | EmitFlags.NoTrailingSourceMap);
-            setSourceMapRange(target, firstAccessor.name); // TODO: GH#18217
+            setSourceMapRange(target, firstAccessor.name);
 
             const propertyName = createExpressionForPropertyName(visitNode(firstAccessor.name, visitor, isPropertyName));
             setEmitFlags(propertyName, EmitFlags.NoComments | EmitFlags.NoLeadingSourceMap);

src/compiler/types.ts

@@ -2614,7 +2614,7 @@ namespace ts {
 
     // Incomplete types occur during control flow analysis of loops. An IncompleteType
     // is distinguished from a regular type by a flags value of zero. Incomplete type
-    // objects are internal to the getFlowTypeOfRefecence function and never escape it.
+    // objects are internal to the getFlowTypeOfReference function and never escape it.
     export interface IncompleteType {
         flags: TypeFlags;  // No flags set
         type: Type;        // The type marked incomplete
@@ -3011,13 +3011,26 @@ namespace ts {
         Completely  = 1 << 1,
     }
 
+    export type CustomTransformerFactory = (context: TransformationContext) => CustomTransformer;
+
+    export interface CustomTransformer {
+        transformSourceFile(node: SourceFile): SourceFile;
+        transformBundle(node: Bundle): Bundle;
+    }
+
     export interface CustomTransformers {
         /** Custom transformers to evaluate before built-in .js transformations. */
-        before?: TransformerFactory<SourceFile>[];
+        before?: (TransformerFactory<SourceFile> | CustomTransformerFactory)[];
         /** Custom transformers to evaluate after built-in .js transformations. */
-        after?: TransformerFactory<SourceFile>[];
+        after?: (TransformerFactory<SourceFile> | CustomTransformerFactory)[];
         /** Custom transformers to evaluate after built-in .d.ts transformations. */
-        afterDeclarations?: TransformerFactory<Bundle | SourceFile>[];
+        afterDeclarations?: (TransformerFactory<Bundle | SourceFile> | CustomTransformerFactory)[];
+    }
+
+    /*@internal*/
+    export interface EmitTransformers {
+        scriptTransformers: readonly TransformerFactory<SourceFile | Bundle>[];
+        declarationTransformers: readonly TransformerFactory<SourceFile | Bundle>[];
     }
 
     export interface SourceMapSpan {
@@ -3738,7 +3751,7 @@ namespace ts {
         specifierCache?: Map<string>;     // For symbols corresponding to external modules, a cache of incoming path -> module specifier name mappings
         extendedContainers?: Symbol[];      // Containers (other than the parent) which this symbol is aliased in
         extendedContainersByFile?: Map<Symbol[]>;      // Containers (other than the parent) which this symbol is aliased in
-        variances?: Variance[];             // Alias symbol type argument variance cache
+        variances?: VarianceFlags[];             // Alias symbol type argument variance cache
     }
 
     /* @internal */
@@ -4134,12 +4147,16 @@ namespace ts {
     }
 
     /* @internal */
-    export const enum Variance {
-        Invariant     = 0,  // Neither covariant nor contravariant
-        Covariant     = 1,  // Covariant
-        Contravariant = 2,  // Contravariant
-        Bivariant     = 3,  // Both covariant and contravariant
-        Independent   = 4,  // Unwitnessed type parameter
+    export const enum VarianceFlags {
+        Invariant     =      0,  // Neither covariant nor contravariant
+        Covariant     = 1 << 0,  // Covariant
+        Contravariant = 1 << 1,  // Contravariant
+        Bivariant     = Covariant | Contravariant,  // Both covariant and contravariant
+        Independent   = 1 << 2,  // Unwitnessed type parameter
+        VarianceMask  = Invariant | Covariant | Contravariant | Independent, // Mask containing all measured variances without the unmeasurable flag
+        Unmeasurable  = 1 << 3,  // Variance result is unusable - relationship relies on structural comparisons which are not reflected in generic relationships
+        Unreliable    = 1 << 4,  // Variance result is unreliable - relationship relies on structural comparisons which are not reflected in generic relationships
+        AllowsStructuralFallback = Unmeasurable | Unreliable,
     }
 
     // Generic class and interface types
@@ -4147,7 +4164,7 @@ namespace ts {
         /* @internal */
         instantiations: Map<TypeReference>;  // Generic instantiation cache
         /* @internal */
-        variances?: Variance[];  // Variance of each type parameter
+        variances?: VarianceFlags[];  // Variance of each type parameter
     }
 
     export interface TupleType extends GenericType {
@@ -5136,7 +5153,7 @@ namespace ts {
         createHash?(data: string): string;
         getParsedCommandLine?(fileName: string): ParsedCommandLine | undefined;
 
-        // TODO: later handle this in better way in builder host instead once the api for tsbuild finalizes and doesnt use compilerHost as base
+        // TODO: later handle this in better way in builder host instead once the api for tsbuild finalizes and doesn't use compilerHost as base
         /*@internal*/createDirectory?(directory: string): void;
     }
 

src/services/refactors/extractType.ts

@@ -0,0 +1,147 @@
+/* @internal */
+namespace ts.refactor {
+    const refactorName = "Extract type";
+    const extractToTypeAlias = "Extract to type alias";
+    const extractToTypeDef = "Extract to typedef";
+    registerRefactor(refactorName, {
+        getAvailableActions(context): ReadonlyArray<ApplicableRefactorInfo> {
+            const info = getRangeToExtract(context);
+            if (!info) return emptyArray;
+
+            return [{
+                name: refactorName,
+                description: getLocaleSpecificMessage(Diagnostics.Extract_type),
+                actions: [info.isJS ? {
+                    name: extractToTypeDef, description: getLocaleSpecificMessage(Diagnostics.Extract_to_typedef)
+                } : {
+                        name: extractToTypeAlias, description: getLocaleSpecificMessage(Diagnostics.Extract_to_type_alias)
+                    }]
+            }];
+        },
+        getEditsForAction(context, actionName): RefactorEditInfo {
+            Debug.assert(actionName === extractToTypeAlias || actionName === extractToTypeDef);
+            const { file } = context;
+            const info = Debug.assertDefined(getRangeToExtract(context));
+            Debug.assert(actionName === extractToTypeAlias && !info.isJS || actionName === extractToTypeDef && info.isJS);
+
+            const name = getUniqueName("NewType", file);
+            const edits = textChanges.ChangeTracker.with(context, changes => info.isJS ?
+                doTypedefChange(changes, file, name, info.firstStatement, info.selection, info.typeParameters) :
+                doTypeAliasChange(changes, file, name, info.firstStatement, info.selection, info.typeParameters));
+
+            const renameFilename = file.fileName;
+            const renameLocation = getRenameLocation(edits, renameFilename, name, /*preferLastLocation*/ false);
+            return { edits, renameFilename, renameLocation };
+        }
+    });
+
+    interface Info { isJS: boolean; selection: TypeNode; firstStatement: Statement; typeParameters: ReadonlyArray<TypeParameterDeclaration>; }
+
+    function getRangeToExtract(context: RefactorContext): Info | undefined {
+        const { file, startPosition } = context;
+        const isJS = isSourceFileJS(file);
+        const current = getTokenAtPosition(file, startPosition);
+        const range = createTextRangeFromSpan(getRefactorContextSpan(context));
+
+        const selection = findAncestor(current, (node => node.parent && rangeContainsSkipTrivia(range, node, file) && !rangeContainsSkipTrivia(range, node.parent, file)));
+        if (!selection || !isTypeNode(selection)) return undefined;
+
+        const checker = context.program.getTypeChecker();
+        const firstStatement = Debug.assertDefined(isJS ? findAncestor(selection, isStatementAndHasJSDoc) : findAncestor(selection, isStatement));
+        const typeParameters = collectTypeParameters(checker, selection, firstStatement, file);
+        if (!typeParameters) return undefined;
+
+        return { isJS, selection, firstStatement, typeParameters };
+    }
+
+    function isStatementAndHasJSDoc(n: Node): n is (Statement & HasJSDoc) {
+        return isStatement(n) && hasJSDocNodes(n);
+    }
+
+    function rangeContainsSkipTrivia(r1: TextRange, node: Node, file: SourceFile): boolean {
+        return rangeContainsStartEnd(r1, skipTrivia(file.text, node.pos), node.end);
+    }
+
+    function collectTypeParameters(checker: TypeChecker, selection: TypeNode, statement: Statement, file: SourceFile): TypeParameterDeclaration[] | undefined {
+        const result: TypeParameterDeclaration[] = [];
+        return visitor(selection) ? undefined : result;
+
+        function visitor(node: Node): true | undefined {
+            if (isTypeReferenceNode(node)) {
+                if (isIdentifier(node.typeName)) {
+                    const symbol = checker.resolveName(node.typeName.text, node.typeName, SymbolFlags.TypeParameter, /* excludeGlobals */ true);
+                    if (symbol) {
+                        const declaration = cast(first(symbol.declarations), isTypeParameterDeclaration);
+                        if (rangeContainsSkipTrivia(statement, declaration, file) && !rangeContainsSkipTrivia(selection, declaration, file)) {
+                            result.push(declaration);
+                        }
+                    }
+                }
+            }
+            else if (isInferTypeNode(node)) {
+                const conditionalTypeNode = findAncestor(node, n => isConditionalTypeNode(n) && rangeContainsSkipTrivia(n.extendsType, node, file));
+                if (!conditionalTypeNode || !rangeContainsSkipTrivia(selection, conditionalTypeNode, file)) {
+                    return true;
+                }
+            }
+            else if ((isTypePredicateNode(node) || isThisTypeNode(node))) {
+                const functionLikeNode = findAncestor(node.parent, isFunctionLike);
+                if (functionLikeNode && functionLikeNode.type && rangeContainsSkipTrivia(functionLikeNode.type, node, file) && !rangeContainsSkipTrivia(selection, functionLikeNode, file)) {
+                    return true;
+                }
+            }
+            else if (isTypeQueryNode(node)) {
+                if (isIdentifier(node.exprName)) {
+                    const symbol = checker.resolveName(node.exprName.text, node.exprName, SymbolFlags.Value, /* excludeGlobals */ false);
+                    if (symbol && rangeContainsSkipTrivia(statement, symbol.valueDeclaration, file) && !rangeContainsSkipTrivia(selection, symbol.valueDeclaration, file)) {
+                        return true;
+                    }
+                }
+                else {
+                    if (isThisIdentifier(node.exprName.left) && !rangeContainsSkipTrivia(selection, node.parent, file)) {
+                        return true;
+                    }
+                }
+            }
+            return forEachChild(node, visitor);
+        }
+    }
+
+    function doTypeAliasChange(changes: textChanges.ChangeTracker, file: SourceFile, name: string, firstStatement: Statement, selection: TypeNode, typeParameters: ReadonlyArray<TypeParameterDeclaration>) {
+        const newTypeNode = createTypeAliasDeclaration(
+            /* decorators */ undefined,
+            /* modifiers */ undefined,
+            name,
+            typeParameters.map(id => updateTypeParameterDeclaration(id, id.name, id.constraint, /* defaultType */ undefined)),
+            selection
+        );
+        changes.insertNodeBefore(file, firstStatement, newTypeNode, /* blankLineBetween */ true);
+        changes.replaceNode(file, selection, createTypeReferenceNode(name, typeParameters.map(id => createTypeReferenceNode(id.name, /* typeArguments */ undefined))));
+    }
+
+    function doTypedefChange(changes: textChanges.ChangeTracker, file: SourceFile, name: string, firstStatement: Statement, selection: TypeNode, typeParameters: ReadonlyArray<TypeParameterDeclaration>) {
+        const node = <JSDocTypedefTag>createNode(SyntaxKind.JSDocTypedefTag);
+        node.tagName = createIdentifier("typedef"); // TODO: jsdoc factory https://github.com/Microsoft/TypeScript/pull/29539
+        node.fullName = createIdentifier(name);
+        node.name = node.fullName;
+        node.typeExpression = createJSDocTypeExpression(selection);
+
+        const templates: JSDocTemplateTag[] = [];
+        forEach(typeParameters, typeParameter => {
+            const constraint = getEffectiveConstraintOfTypeParameter(typeParameter);
+
+            const template = <JSDocTemplateTag>createNode(SyntaxKind.JSDocTemplateTag);
+            template.tagName = createIdentifier("template");
+            template.constraint = constraint && cast(constraint, isJSDocTypeExpression);
+
+            const parameter = <TypeParameterDeclaration>createNode(SyntaxKind.TypeParameter);
+            parameter.name = typeParameter.name;
+            template.typeParameters = createNodeArray([parameter]);
+
+            templates.push(template);
+        });
+
+        changes.insertNodeBefore(file, firstStatement, createJSDocComment(/* comment */ undefined, createNodeArray(concatenate<JSDocTag>(templates, [node]))), /* blankLineBetween */ true);
+        changes.replaceNode(file, selection, createTypeReferenceNode(name, typeParameters.map(id => createTypeReferenceNode(id.name, /* typeArguments */ undefined))));
+    }
+}

src/services/symbolDisplay.ts

@@ -171,8 +171,7 @@ namespace ts.SymbolDisplay {
             }
 
             if (callExpressionLike) {
-                const candidateSignatures: Signature[] = [];
-                signature = typeChecker.getResolvedSignature(callExpressionLike, candidateSignatures)!; // TODO: GH#18217
+                signature = typeChecker.getResolvedSignature(callExpressionLike)!; // TODO: GH#18217
 
                 const useConstructSignatures = callExpressionLike.kind === SyntaxKind.NewExpression || (isCallExpression(callExpressionLike) && callExpressionLike.expression.kind === SyntaxKind.SuperKeyword);
 

src/services/tsconfig.json

@@ -80,6 +80,7 @@
         "refactors/convertExport.ts",
         "refactors/convertImport.ts",
         "refactors/extractSymbol.ts",
+        "refactors/extractType.ts",
         "refactors/generateGetAccessorAndSetAccessor.ts",
         "refactors/moveToNewFile.ts",
         "refactors/addOrRemoveBracesToArrowFunction.ts",

src/testRunner/unittests/customTransforms.ts

@@ -140,22 +140,28 @@ namespace ts {
             ],
             {
                 before: [
-                    context => node => visitNode(node, function visitor(node: Node): Node {
-                        if (isIdentifier(node) && node.text === "original") {
-                            const newNode = createIdentifier("changed");
-                            setSourceMapRange(newNode, {
-                              pos: 0,
-                              end: 7,
-                              // Do not provide a custom skipTrivia function for `source`.
-                              source: createSourceMapSource("another.html", "changed;")
-                            });
-                            return newNode;
-                        }
-                        return visitEachChild(node, visitor, context);
-                    })
+                    context => {
+                        const transformSourceFile: Transformer<SourceFile> = node => visitNode(node, function visitor(node: Node): Node {
+                            if (isIdentifier(node) && node.text === "original") {
+                                const newNode = createIdentifier("changed");
+                                setSourceMapRange(newNode, {
+                                    pos: 0,
+                                    end: 7,
+                                    // Do not provide a custom skipTrivia function for `source`.
+                                    source: createSourceMapSource("another.html", "changed;")
+                                });
+                                return newNode;
+                            }
+                            return visitEachChild(node, visitor, context);
+                        });
+                        return {
+                            transformSourceFile,
+                            transformBundle: node => createBundle(map(node.sourceFiles, transformSourceFile), node.prepends),
+                        };
+                    }
                 ]
             },
-            { sourceMap: true }
+            { sourceMap: true, outFile: "source.js" }
         );
 
     });

src/testRunner/unittests/jsDocParsing.ts

@@ -37,6 +37,8 @@ namespace ts {
                 parsesCorrectly("callSignatureInRecordType", "{{(): number}}");
                 parsesCorrectly("methodInRecordType", "{{foo(): number}}");
                 parsesCorrectly("unionType", "{(number|string)}");
+                parsesCorrectly("unionTypeWithLeadingOperator", "{( | number | string )}");
+                parsesCorrectly("unionTypeWithOneElementAndLeadingOperator", "{( | number )}");
                 parsesCorrectly("topLevelNoParenUnionType", "{number|string}");
                 parsesCorrectly("functionType1", "{function()}");
                 parsesCorrectly("functionType2", "{function(string, boolean)}");

tests/baselines/reference/JSDocParsing/TypeExpressions.parsesCorrectly.unionTypeWithLeadingOperator.json

@@ -0,0 +1,37 @@
+{
+    "kind": "ParenthesizedType",
+    "pos": 1,
+    "end": 22,
+    "flags": "JSDoc",
+    "modifierFlagsCache": 0,
+    "transformFlags": 0,
+    "type": {
+        "kind": "UnionType",
+        "pos": 2,
+        "end": 20,
+        "flags": "JSDoc",
+        "modifierFlagsCache": 0,
+        "transformFlags": 0,
+        "types": {
+            "0": {
+                "kind": "NumberKeyword",
+                "pos": 4,
+                "end": 11,
+                "flags": "JSDoc",
+                "modifierFlagsCache": 0,
+                "transformFlags": 0
+            },
+            "1": {
+                "kind": "StringKeyword",
+                "pos": 13,
+                "end": 20,
+                "flags": "JSDoc",
+                "modifierFlagsCache": 0,
+                "transformFlags": 0
+            },
+            "length": 2,
+            "pos": 2,
+            "end": 20
+        }
+    }
+}

tests/baselines/reference/JSDocParsing/TypeExpressions.parsesCorrectly.unionTypeWithOneElementAndLeadingOperator.json

@@ -0,0 +1,29 @@
+{
+    "kind": "ParenthesizedType",
+    "pos": 1,
+    "end": 13,
+    "flags": "JSDoc",
+    "modifierFlagsCache": 0,
+    "transformFlags": 0,
+    "type": {
+        "kind": "UnionType",
+        "pos": 2,
+        "end": 11,
+        "flags": "JSDoc",
+        "modifierFlagsCache": 0,
+        "transformFlags": 0,
+        "types": {
+            "0": {
+                "kind": "NumberKeyword",
+                "pos": 4,
+                "end": 11,
+                "flags": "JSDoc",
+                "modifierFlagsCache": 0,
+                "transformFlags": 0
+            },
+            "length": 1,
+            "pos": 2,
+            "end": 11
+        }
+    }
+}

tests/baselines/reference/api/tsserverlibrary.d.ts

@@ -1879,13 +1879,18 @@ declare namespace ts {
         sourceFile: SourceFile;
         references?: ReadonlyArray<ResolvedProjectReference | undefined>;
     }
+    type CustomTransformerFactory = (context: TransformationContext) => CustomTransformer;
+    interface CustomTransformer {
+        transformSourceFile(node: SourceFile): SourceFile;
+        transformBundle(node: Bundle): Bundle;
+    }
     interface CustomTransformers {
         /** Custom transformers to evaluate before built-in .js transformations. */
-        before?: TransformerFactory<SourceFile>[];
+        before?: (TransformerFactory<SourceFile> | CustomTransformerFactory)[];
         /** Custom transformers to evaluate after built-in .js transformations. */
-        after?: TransformerFactory<SourceFile>[];
+        after?: (TransformerFactory<SourceFile> | CustomTransformerFactory)[];
         /** Custom transformers to evaluate after built-in .d.ts transformations. */
-        afterDeclarations?: TransformerFactory<Bundle | SourceFile>[];
+        afterDeclarations?: (TransformerFactory<Bundle | SourceFile> | CustomTransformerFactory)[];
     }
     interface SourceMapSpan {
         /** Line number in the .js file. */
@@ -3668,7 +3673,7 @@ declare namespace ts {
      * @param basePath A root directory to resolve relative path entries in the config
      *    file to. e.g. outDir
      */
-    function parseJsonConfigFileContent(json: any, host: ParseConfigHost, basePath: string, existingOptions?: CompilerOptions, configFileName?: string, resolutionStack?: Path[], extraFileExtensions?: ReadonlyArray<FileExtensionInfo>): ParsedCommandLine;
+    function parseJsonConfigFileContent(json: any, host: ParseConfigHost, basePath: string, existingOptions?: CompilerOptions, configFileName?: string, resolutionStack?: Path[], extraFileExtensions?: ReadonlyArray<FileExtensionInfo>, extendedConfigCache?: Map<ExtendedConfigCacheEntry>): ParsedCommandLine;
     /**
      * Parse the contents of a config file (tsconfig.json).
      * @param jsonNode The contents of the config file to parse
@@ -3676,7 +3681,7 @@ declare namespace ts {
      * @param basePath A root directory to resolve relative path entries in the config
      *    file to. e.g. outDir
      */
-    function parseJsonSourceFileConfigFileContent(sourceFile: TsConfigSourceFile, host: ParseConfigHost, basePath: string, existingOptions?: CompilerOptions, configFileName?: string, resolutionStack?: Path[], extraFileExtensions?: ReadonlyArray<FileExtensionInfo>, /*@internal*/ extendedConfigCache?: Map<ExtendedConfigCacheEntry>): ParsedCommandLine;
+    function parseJsonSourceFileConfigFileContent(sourceFile: TsConfigSourceFile, host: ParseConfigHost, basePath: string, existingOptions?: CompilerOptions, configFileName?: string, resolutionStack?: Path[], extraFileExtensions?: ReadonlyArray<FileExtensionInfo>, extendedConfigCache?: Map<ExtendedConfigCacheEntry>): ParsedCommandLine;
     interface ParsedTsconfig {
         raw: any;
         options?: CompilerOptions;
@@ -3857,7 +3862,7 @@ declare namespace ts {
     function updateArrayLiteral(node: ArrayLiteralExpression, elements: ReadonlyArray<Expression>): ArrayLiteralExpression;
     function createObjectLiteral(properties?: ReadonlyArray<ObjectLiteralElementLike>, multiLine?: boolean): ObjectLiteralExpression;
     function updateObjectLiteral(node: ObjectLiteralExpression, properties: ReadonlyArray<ObjectLiteralElementLike>): ObjectLiteralExpression;
-    function createPropertyAccess(expression: Expression, name: string | Identifier | undefined): PropertyAccessExpression;
+    function createPropertyAccess(expression: Expression, name: string | Identifier): PropertyAccessExpression;
     function updatePropertyAccess(node: PropertyAccessExpression, expression: Expression, name: Identifier): PropertyAccessExpression;
     function createElementAccess(expression: Expression, index: number | Expression): ElementAccessExpression;
     function updateElementAccess(node: ElementAccessExpression, expression: Expression, argumentExpression: Expression): ElementAccessExpression;
@@ -4072,7 +4077,7 @@ declare namespace ts {
     function createInputFiles(javascriptText: string, declarationText: string): InputFiles;
     function createInputFiles(readFileText: (path: string) => string | undefined, javascriptPath: string, javascriptMapPath: string | undefined, declarationPath: string, declarationMapPath: string | undefined, buildInfoPath: string | undefined): InputFiles;
     function createInputFiles(javascriptText: string, declarationText: string, javascriptMapPath: string | undefined, javascriptMapText: string | undefined, declarationMapPath: string | undefined, declarationMapText: string | undefined): InputFiles;
-    function updateBundle(node: Bundle, sourceFiles: ReadonlyArray<SourceFile>, prepends?: ReadonlyArray<UnparsedSource>): Bundle;
+    function updateBundle(node: Bundle, sourceFiles: ReadonlyArray<SourceFile>, prepends?: ReadonlyArray<UnparsedSource | InputFiles>): Bundle;
     function createImmediatelyInvokedFunctionExpression(statements: ReadonlyArray<Statement>): CallExpression;
     function createImmediatelyInvokedFunctionExpression(statements: ReadonlyArray<Statement>, param: ParameterDeclaration, paramValue: Expression): CallExpression;
     function createImmediatelyInvokedArrowFunction(statements: ReadonlyArray<Statement>): CallExpression;

tests/baselines/reference/api/typescript.d.ts

@@ -1879,13 +1879,18 @@ declare namespace ts {
         sourceFile: SourceFile;
         references?: ReadonlyArray<ResolvedProjectReference | undefined>;
     }
+    type CustomTransformerFactory = (context: TransformationContext) => CustomTransformer;
+    interface CustomTransformer {
+        transformSourceFile(node: SourceFile): SourceFile;
+        transformBundle(node: Bundle): Bundle;
+    }
     interface CustomTransformers {
         /** Custom transformers to evaluate before built-in .js transformations. */
-        before?: TransformerFactory<SourceFile>[];
+        before?: (TransformerFactory<SourceFile> | CustomTransformerFactory)[];
         /** Custom transformers to evaluate after built-in .js transformations. */
-        after?: TransformerFactory<SourceFile>[];
+        after?: (TransformerFactory<SourceFile> | CustomTransformerFactory)[];
         /** Custom transformers to evaluate after built-in .d.ts transformations. */
-        afterDeclarations?: TransformerFactory<Bundle | SourceFile>[];
+        afterDeclarations?: (TransformerFactory<Bundle | SourceFile> | CustomTransformerFactory)[];
     }
     interface SourceMapSpan {
         /** Line number in the .js file. */
@@ -3668,7 +3673,7 @@ declare namespace ts {
      * @param basePath A root directory to resolve relative path entries in the config
      *    file to. e.g. outDir
      */
-    function parseJsonConfigFileContent(json: any, host: ParseConfigHost, basePath: string, existingOptions?: CompilerOptions, configFileName?: string, resolutionStack?: Path[], extraFileExtensions?: ReadonlyArray<FileExtensionInfo>): ParsedCommandLine;
+    function parseJsonConfigFileContent(json: any, host: ParseConfigHost, basePath: string, existingOptions?: CompilerOptions, configFileName?: string, resolutionStack?: Path[], extraFileExtensions?: ReadonlyArray<FileExtensionInfo>, extendedConfigCache?: Map<ExtendedConfigCacheEntry>): ParsedCommandLine;
     /**
      * Parse the contents of a config file (tsconfig.json).
      * @param jsonNode The contents of the config file to parse
@@ -3676,7 +3681,7 @@ declare namespace ts {
      * @param basePath A root directory to resolve relative path entries in the config
      *    file to. e.g. outDir
      */
-    function parseJsonSourceFileConfigFileContent(sourceFile: TsConfigSourceFile, host: ParseConfigHost, basePath: string, existingOptions?: CompilerOptions, configFileName?: string, resolutionStack?: Path[], extraFileExtensions?: ReadonlyArray<FileExtensionInfo>, /*@internal*/ extendedConfigCache?: Map<ExtendedConfigCacheEntry>): ParsedCommandLine;
+    function parseJsonSourceFileConfigFileContent(sourceFile: TsConfigSourceFile, host: ParseConfigHost, basePath: string, existingOptions?: CompilerOptions, configFileName?: string, resolutionStack?: Path[], extraFileExtensions?: ReadonlyArray<FileExtensionInfo>, extendedConfigCache?: Map<ExtendedConfigCacheEntry>): ParsedCommandLine;
     interface ParsedTsconfig {
         raw: any;
         options?: CompilerOptions;
@@ -3857,7 +3862,7 @@ declare namespace ts {
     function updateArrayLiteral(node: ArrayLiteralExpression, elements: ReadonlyArray<Expression>): ArrayLiteralExpression;
     function createObjectLiteral(properties?: ReadonlyArray<ObjectLiteralElementLike>, multiLine?: boolean): ObjectLiteralExpression;
     function updateObjectLiteral(node: ObjectLiteralExpression, properties: ReadonlyArray<ObjectLiteralElementLike>): ObjectLiteralExpression;
-    function createPropertyAccess(expression: Expression, name: string | Identifier | undefined): PropertyAccessExpression;
+    function createPropertyAccess(expression: Expression, name: string | Identifier): PropertyAccessExpression;
     function updatePropertyAccess(node: PropertyAccessExpression, expression: Expression, name: Identifier): PropertyAccessExpression;
     function createElementAccess(expression: Expression, index: number | Expression): ElementAccessExpression;
     function updateElementAccess(node: ElementAccessExpression, expression: Expression, argumentExpression: Expression): ElementAccessExpression;
@@ -4072,7 +4077,7 @@ declare namespace ts {
     function createInputFiles(javascriptText: string, declarationText: string): InputFiles;
     function createInputFiles(readFileText: (path: string) => string | undefined, javascriptPath: string, javascriptMapPath: string | undefined, declarationPath: string, declarationMapPath: string | undefined, buildInfoPath: string | undefined): InputFiles;
     function createInputFiles(javascriptText: string, declarationText: string, javascriptMapPath: string | undefined, javascriptMapText: string | undefined, declarationMapPath: string | undefined, declarationMapText: string | undefined): InputFiles;
-    function updateBundle(node: Bundle, sourceFiles: ReadonlyArray<SourceFile>, prepends?: ReadonlyArray<UnparsedSource>): Bundle;
+    function updateBundle(node: Bundle, sourceFiles: ReadonlyArray<SourceFile>, prepends?: ReadonlyArray<UnparsedSource | InputFiles>): Bundle;
     function createImmediatelyInvokedFunctionExpression(statements: ReadonlyArray<Statement>): CallExpression;
     function createImmediatelyInvokedFunctionExpression(statements: ReadonlyArray<Statement>, param: ParameterDeclaration, paramValue: Expression): CallExpression;
     function createImmediatelyInvokedArrowFunction(statements: ReadonlyArray<Statement>): CallExpression;

tests/baselines/reference/asyncFunctionTempVariableScoping.js

@@ -45,8 +45,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var _this = this;

tests/baselines/reference/awaitInNonAsyncFunction.errors.txt

@@ -0,0 +1,103 @@
+tests/cases/compiler/awaitInNonAsyncFunction.ts(4,7): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+tests/cases/compiler/awaitInNonAsyncFunction.ts(5,10): error TS1308: 'await' expression is only allowed within an async function.
+tests/cases/compiler/awaitInNonAsyncFunction.ts(9,7): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+tests/cases/compiler/awaitInNonAsyncFunction.ts(10,10): error TS1308: 'await' expression is only allowed within an async function.
+tests/cases/compiler/awaitInNonAsyncFunction.ts(14,7): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+tests/cases/compiler/awaitInNonAsyncFunction.ts(15,3): error TS1308: 'await' expression is only allowed within an async function.
+tests/cases/compiler/awaitInNonAsyncFunction.ts(19,7): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+tests/cases/compiler/awaitInNonAsyncFunction.ts(20,10): error TS1308: 'await' expression is only allowed within an async function.
+tests/cases/compiler/awaitInNonAsyncFunction.ts(24,7): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+tests/cases/compiler/awaitInNonAsyncFunction.ts(25,9): error TS1308: 'await' expression is only allowed within an async function.
+tests/cases/compiler/awaitInNonAsyncFunction.ts(30,9): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+tests/cases/compiler/awaitInNonAsyncFunction.ts(31,5): error TS1308: 'await' expression is only allowed within an async function.
+tests/cases/compiler/awaitInNonAsyncFunction.ts(34,7): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+tests/cases/compiler/awaitInNonAsyncFunction.ts(35,5): error TS1308: 'await' expression is only allowed within an async function.
+tests/cases/compiler/awaitInNonAsyncFunction.ts(39,5): error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+tests/cases/compiler/awaitInNonAsyncFunction.ts(40,1): error TS1308: 'await' expression is only allowed within an async function.
+
+
+==== tests/cases/compiler/awaitInNonAsyncFunction.ts (16 errors) ====
+    // https://github.com/Microsoft/TypeScript/issues/26586
+    
+    function normalFunc(p: Promise<number>) {
+      for await (const _ of []);
+          ~~~~~
+!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:3:10: Did you mean to mark this function as 'async'?
+      return await p;
+             ~~~~~
+!!! error TS1308: 'await' expression is only allowed within an async function.
+!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:3:10: Did you mean to mark this function as 'async'?
+    }
+    
+    export function exportedFunc(p: Promise<number>) {
+      for await (const _ of []);
+          ~~~~~
+!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:8:17: Did you mean to mark this function as 'async'?
+      return await p;
+             ~~~~~
+!!! error TS1308: 'await' expression is only allowed within an async function.
+!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:8:17: Did you mean to mark this function as 'async'?
+    }
+    
+    const functionExpression = function(p: Promise<number>) {
+      for await (const _ of []);
+          ~~~~~
+!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:13:28: Did you mean to mark this function as 'async'?
+      await p;
+      ~~~~~
+!!! error TS1308: 'await' expression is only allowed within an async function.
+!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:13:28: Did you mean to mark this function as 'async'?
+    }
+    
+    const arrowFunc = (p: Promise<number>) => {
+      for await (const _ of []);
+          ~~~~~
+!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:18:19: Did you mean to mark this function as 'async'?
+      return await p;
+             ~~~~~
+!!! error TS1308: 'await' expression is only allowed within an async function.
+!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:18:19: Did you mean to mark this function as 'async'?
+    };
+    
+    function* generatorFunc(p: Promise<number>) {
+      for await (const _ of []);
+          ~~~~~
+!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:23:11: Did you mean to mark this function as 'async'?
+      yield await p;
+            ~~~~~
+!!! error TS1308: 'await' expression is only allowed within an async function.
+!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:23:11: Did you mean to mark this function as 'async'?
+    }
+    
+    class clazz {
+      constructor(p: Promise<number>) {
+        for await (const _ of []);
+            ~~~~~
+!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+        await p;
+        ~~~~~
+!!! error TS1308: 'await' expression is only allowed within an async function.
+      }
+      method(p: Promise<number>) {
+      for await (const _ of []);
+          ~~~~~
+!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:33:3: Did you mean to mark this function as 'async'?
+        await p;
+        ~~~~~
+!!! error TS1308: 'await' expression is only allowed within an async function.
+!!! related TS1356 tests/cases/compiler/awaitInNonAsyncFunction.ts:33:3: Did you mean to mark this function as 'async'?
+      }
+    }
+    
+    for await (const _ of []);
+        ~~~~~
+!!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+    await null;
+    ~~~~~
+!!! error TS1308: 'await' expression is only allowed within an async function.

tests/baselines/reference/awaitInNonAsyncFunction.js

@@ -0,0 +1,84 @@
+//// [awaitInNonAsyncFunction.ts]
+// https://github.com/Microsoft/TypeScript/issues/26586
+
+function normalFunc(p: Promise<number>) {
+  for await (const _ of []);
+  return await p;
+}
+
+export function exportedFunc(p: Promise<number>) {
+  for await (const _ of []);
+  return await p;
+}
+
+const functionExpression = function(p: Promise<number>) {
+  for await (const _ of []);
+  await p;
+}
+
+const arrowFunc = (p: Promise<number>) => {
+  for await (const _ of []);
+  return await p;
+};
+
+function* generatorFunc(p: Promise<number>) {
+  for await (const _ of []);
+  yield await p;
+}
+
+class clazz {
+  constructor(p: Promise<number>) {
+    for await (const _ of []);
+    await p;
+  }
+  method(p: Promise<number>) {
+  for await (const _ of []);
+    await p;
+  }
+}
+
+for await (const _ of []);
+await null;
+
+//// [awaitInNonAsyncFunction.js]
+// https://github.com/Microsoft/TypeScript/issues/26586
+function normalFunc(p) {
+    for await (const _ of [])
+        ;
+    return await p;
+}
+export function exportedFunc(p) {
+    for await (const _ of [])
+        ;
+    return await p;
+}
+const functionExpression = function (p) {
+    for await (const _ of [])
+        ;
+    await p;
+};
+const arrowFunc = (p) => {
+    for await (const _ of [])
+        ;
+    return await p;
+};
+function* generatorFunc(p) {
+    for await (const _ of [])
+        ;
+    yield await p;
+}
+class clazz {
+    constructor(p) {
+        for await (const _ of [])
+            ;
+        await p;
+    }
+    method(p) {
+        for await (const _ of [])
+            ;
+        await p;
+    }
+}
+for await (const _ of [])
+    ;
+await null;

tests/baselines/reference/awaitInNonAsyncFunction.symbols

@@ -0,0 +1,94 @@
+=== tests/cases/compiler/awaitInNonAsyncFunction.ts ===
+// https://github.com/Microsoft/TypeScript/issues/26586
+
+function normalFunc(p: Promise<number>) {
+>normalFunc : Symbol(normalFunc, Decl(awaitInNonAsyncFunction.ts, 0, 0))
+>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 2, 20))
+>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
+
+  for await (const _ of []);
+>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 3, 18))
+
+  return await p;
+>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 2, 20))
+}
+
+export function exportedFunc(p: Promise<number>) {
+>exportedFunc : Symbol(exportedFunc, Decl(awaitInNonAsyncFunction.ts, 5, 1))
+>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 7, 29))
+>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
+
+  for await (const _ of []);
+>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 8, 18))
+
+  return await p;
+>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 7, 29))
+}
+
+const functionExpression = function(p: Promise<number>) {
+>functionExpression : Symbol(functionExpression, Decl(awaitInNonAsyncFunction.ts, 12, 5))
+>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 12, 36))
+>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
+
+  for await (const _ of []);
+>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 13, 18))
+
+  await p;
+>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 12, 36))
+}
+
+const arrowFunc = (p: Promise<number>) => {
+>arrowFunc : Symbol(arrowFunc, Decl(awaitInNonAsyncFunction.ts, 17, 5))
+>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 17, 19))
+>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
+
+  for await (const _ of []);
+>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 18, 18))
+
+  return await p;
+>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 17, 19))
+
+};
+
+function* generatorFunc(p: Promise<number>) {
+>generatorFunc : Symbol(generatorFunc, Decl(awaitInNonAsyncFunction.ts, 20, 2))
+>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 22, 24))
+>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
+
+  for await (const _ of []);
+>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 23, 18))
+
+  yield await p;
+>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 22, 24))
+}
+
+class clazz {
+>clazz : Symbol(clazz, Decl(awaitInNonAsyncFunction.ts, 25, 1))
+
+  constructor(p: Promise<number>) {
+>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 28, 14))
+>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
+
+    for await (const _ of []);
+>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 29, 20))
+
+    await p;
+>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 28, 14))
+  }
+  method(p: Promise<number>) {
+>method : Symbol(clazz.method, Decl(awaitInNonAsyncFunction.ts, 31, 3))
+>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 32, 9))
+>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
+
+  for await (const _ of []);
+>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 33, 18))
+
+    await p;
+>p : Symbol(p, Decl(awaitInNonAsyncFunction.ts, 32, 9))
+  }
+}
+
+for await (const _ of []);
+>_ : Symbol(_, Decl(awaitInNonAsyncFunction.ts, 38, 16))
+
+await null;

tests/baselines/reference/awaitInNonAsyncFunction.types

@@ -0,0 +1,108 @@
+=== tests/cases/compiler/awaitInNonAsyncFunction.ts ===
+// https://github.com/Microsoft/TypeScript/issues/26586
+
+function normalFunc(p: Promise<number>) {
+>normalFunc : (p: Promise<number>) => number
+>p : Promise<number>
+
+  for await (const _ of []);
+>_ : any
+>[] : undefined[]
+
+  return await p;
+>await p : number
+>p : Promise<number>
+}
+
+export function exportedFunc(p: Promise<number>) {
+>exportedFunc : (p: Promise<number>) => number
+>p : Promise<number>
+
+  for await (const _ of []);
+>_ : any
+>[] : undefined[]
+
+  return await p;
+>await p : number
+>p : Promise<number>
+}
+
+const functionExpression = function(p: Promise<number>) {
+>functionExpression : (p: Promise<number>) => void
+>function(p: Promise<number>) {  for await (const _ of []);  await p;} : (p: Promise<number>) => void
+>p : Promise<number>
+
+  for await (const _ of []);
+>_ : any
+>[] : undefined[]
+
+  await p;
+>await p : number
+>p : Promise<number>
+}
+
+const arrowFunc = (p: Promise<number>) => {
+>arrowFunc : (p: Promise<number>) => number
+>(p: Promise<number>) => {  for await (const _ of []);  return await p;} : (p: Promise<number>) => number
+>p : Promise<number>
+
+  for await (const _ of []);
+>_ : any
+>[] : undefined[]
+
+  return await p;
+>await p : number
+>p : Promise<number>
+
+};
+
+function* generatorFunc(p: Promise<number>) {
+>generatorFunc : (p: Promise<number>) => IterableIterator<number>
+>p : Promise<number>
+
+  for await (const _ of []);
+>_ : any
+>[] : undefined[]
+
+  yield await p;
+>yield await p : any
+>await p : number
+>p : Promise<number>
+}
+
+class clazz {
+>clazz : clazz
+
+  constructor(p: Promise<number>) {
+>p : Promise<number>
+
+    for await (const _ of []);
+>_ : any
+>[] : undefined[]
+
+    await p;
+>await p : number
+>p : Promise<number>
+  }
+  method(p: Promise<number>) {
+>method : (p: Promise<number>) => void
+>p : Promise<number>
+
+  for await (const _ of []);
+>_ : any
+>[] : undefined[]
+
+    await p;
+>await p : number
+>p : Promise<number>
+  }
+}
+
+for await (const _ of []);
+>_ : any
+>[] : undefined[]
+
+await null;
+>await null : null
+>null : null
+

tests/baselines/reference/awaitLiteralValues.errors.txt

@@ -11,35 +11,41 @@ tests/cases/compiler/awaitLiteralValues.ts(22,5): error TS1308: 'await' expressi
         await 'literal';
         ~~~~~
 !!! error TS1308: 'await' expression is only allowed within an async function.
+!!! related TS1356 tests/cases/compiler/awaitLiteralValues.ts:1:10: Did you mean to mark this function as 'async'?
     }
     
     function awaitNumber() {
         await 1;
         ~~~~~
 !!! error TS1308: 'await' expression is only allowed within an async function.
+!!! related TS1356 tests/cases/compiler/awaitLiteralValues.ts:5:10: Did you mean to mark this function as 'async'?
     }
     
     function awaitTrue() {
         await true;
         ~~~~~
 !!! error TS1308: 'await' expression is only allowed within an async function.
+!!! related TS1356 tests/cases/compiler/awaitLiteralValues.ts:9:10: Did you mean to mark this function as 'async'?
     }
     
     function awaitFalse() {
         await false;
         ~~~~~
 !!! error TS1308: 'await' expression is only allowed within an async function.
+!!! related TS1356 tests/cases/compiler/awaitLiteralValues.ts:13:10: Did you mean to mark this function as 'async'?
     }
     
     function awaitNull() {
         await null;
         ~~~~~
 !!! error TS1308: 'await' expression is only allowed within an async function.
+!!! related TS1356 tests/cases/compiler/awaitLiteralValues.ts:17:10: Did you mean to mark this function as 'async'?
     }
     
     function awaitUndefined() {
         await undefined;
         ~~~~~
 !!! error TS1308: 'await' expression is only allowed within an async function.
+!!! related TS1356 tests/cases/compiler/awaitLiteralValues.ts:21:10: Did you mean to mark this function as 'async'?
     }
     

tests/baselines/reference/checkInfiniteExpansionTermination.errors.txt

@@ -0,0 +1,32 @@
+tests/cases/compiler/checkInfiniteExpansionTermination.ts(16,1): error TS2322: Type 'ISubject<Bar>' is not assignable to type 'IObservable<Foo>'.
+  Types of property 'n' are incompatible.
+    Type 'IObservable<Bar[]>' is not assignable to type 'IObservable<Foo[]>'.
+      Type 'Bar[]' is not assignable to type 'Foo[]'.
+        Property 'x' is missing in type 'Bar' but required in type 'Foo'.
+
+
+==== tests/cases/compiler/checkInfiniteExpansionTermination.ts (1 errors) ====
+    // Regression test for #1002
+    // Before fix this code would cause infinite loop
+    
+    interface IObservable<T> {
+        n: IObservable<T[]>; // Needed, must be T[]
+    }
+    
+    // Needed
+    interface ISubject<T> extends IObservable<T> { }
+    
+    interface Foo { x }
+    interface Bar { y }
+    
+    var values: IObservable<Foo>;
+    var values2: ISubject<Bar>;
+    values = values2;
+    ~~~~~~
+!!! error TS2322: Type 'ISubject<Bar>' is not assignable to type 'IObservable<Foo>'.
+!!! error TS2322:   Types of property 'n' are incompatible.
+!!! error TS2322:     Type 'IObservable<Bar[]>' is not assignable to type 'IObservable<Foo[]>'.
+!!! error TS2322:       Type 'Bar[]' is not assignable to type 'Foo[]'.
+!!! error TS2322:         Property 'x' is missing in type 'Bar' but required in type 'Foo'.
+!!! related TS2728 tests/cases/compiler/checkInfiniteExpansionTermination.ts:11:17: 'x' is declared here.
+    

tests/baselines/reference/compositeWithNodeModulesSourceFile.js

@@ -0,0 +1,20 @@
+//// [tests/cases/compiler/compositeWithNodeModulesSourceFile.ts] ////
+
+//// [index.ts]
+export class c { }
+
+//// [test.ts]
+import myModule = require("myModule");
+new myModule.c();
+
+
+
+//// [test.js]
+"use strict";
+exports.__esModule = true;
+var myModule = require("myModule");
+new myModule.c();
+
+
+//// [test.d.ts]
+export {};

tests/baselines/reference/compositeWithNodeModulesSourceFile.symbols

@@ -0,0 +1,14 @@
+=== /foo/test.ts ===
+import myModule = require("myModule");
+>myModule : Symbol(myModule, Decl(test.ts, 0, 0))
+
+new myModule.c();
+>myModule.c : Symbol(myModule.c, Decl(index.ts, 0, 0))
+>myModule : Symbol(myModule, Decl(test.ts, 0, 0))
+>c : Symbol(myModule.c, Decl(index.ts, 0, 0))
+
+
+=== /foo/node_modules/myModule/index.ts ===
+export class c { }
+>c : Symbol(c, Decl(index.ts, 0, 0))
+

tests/baselines/reference/compositeWithNodeModulesSourceFile.types

@@ -0,0 +1,15 @@
+=== /foo/test.ts ===
+import myModule = require("myModule");
+>myModule : typeof myModule
+
+new myModule.c();
+>new myModule.c() : myModule.c
+>myModule.c : typeof myModule.c
+>myModule : typeof myModule
+>c : typeof myModule.c
+
+
+=== /foo/node_modules/myModule/index.ts ===
+export class c { }
+>c : c
+

tests/baselines/reference/conditionalTypes1.errors.txt

@@ -19,12 +19,8 @@ tests/cases/conformance/types/conditional/conditionalTypes1.ts(104,5): error TS2
   'Pick<T, { [K in keyof T]: T[K] extends Function ? never : K; }[keyof T]>' is assignable to the constraint of type 'T', but 'T' could be instantiated with a different subtype of constraint '{}'.
 tests/cases/conformance/types/conditional/conditionalTypes1.ts(106,5): error TS2322: Type 'Pick<T, { [K in keyof T]: T[K] extends Function ? never : K; }[keyof T]>' is not assignable to type 'Pick<T, { [K in keyof T]: T[K] extends Function ? K : never; }[keyof T]>'.
   Type 'T[keyof T] extends Function ? keyof T : never' is not assignable to type 'T[keyof T] extends Function ? never : keyof T'.
-    Type 'keyof T' is not assignable to type 'never'.
-      Type 'string | number | symbol' is not assignable to type 'never'.
-        Type 'string' is not assignable to type 'never'.
 tests/cases/conformance/types/conditional/conditionalTypes1.ts(108,5): error TS2322: Type 'Pick<T, { [K in keyof T]: T[K] extends Function ? K : never; }[keyof T]>' is not assignable to type 'Pick<T, { [K in keyof T]: T[K] extends Function ? never : K; }[keyof T]>'.
   Type 'T[keyof T] extends Function ? never : keyof T' is not assignable to type 'T[keyof T] extends Function ? keyof T : never'.
-    Type 'keyof T' is not assignable to type 'never'.
 tests/cases/conformance/types/conditional/conditionalTypes1.ts(114,5): error TS2322: Type 'keyof T' is not assignable to type 'T[keyof T] extends Function ? keyof T : never'.
   Type 'string | number | symbol' is not assignable to type 'T[keyof T] extends Function ? keyof T : never'.
     Type 'string' is not assignable to type 'T[keyof T] extends Function ? keyof T : never'.
@@ -195,15 +191,11 @@ tests/cases/conformance/types/conditional/conditionalTypes1.ts(288,43): error TS
         ~
 !!! error TS2322: Type 'Pick<T, { [K in keyof T]: T[K] extends Function ? never : K; }[keyof T]>' is not assignable to type 'Pick<T, { [K in keyof T]: T[K] extends Function ? K : never; }[keyof T]>'.
 !!! error TS2322:   Type 'T[keyof T] extends Function ? keyof T : never' is not assignable to type 'T[keyof T] extends Function ? never : keyof T'.
-!!! error TS2322:     Type 'keyof T' is not assignable to type 'never'.
-!!! error TS2322:       Type 'string | number | symbol' is not assignable to type 'never'.
-!!! error TS2322:         Type 'string' is not assignable to type 'never'.
         z = x;
         z = y;  // Error
         ~
 !!! error TS2322: Type 'Pick<T, { [K in keyof T]: T[K] extends Function ? K : never; }[keyof T]>' is not assignable to type 'Pick<T, { [K in keyof T]: T[K] extends Function ? never : K; }[keyof T]>'.
 !!! error TS2322:   Type 'T[keyof T] extends Function ? never : keyof T' is not assignable to type 'T[keyof T] extends Function ? keyof T : never'.
-!!! error TS2322:     Type 'keyof T' is not assignable to type 'never'.
     }
     
     function f8<T>(x: keyof T, y: FunctionPropertyNames<T>, z: NonFunctionPropertyNames<T>) {

tests/baselines/reference/consistentAliasVsNonAliasRecordBehavior.errors.txt

@@ -0,0 +1,55 @@
+tests/cases/compiler/consistentAliasVsNonAliasRecordBehavior.ts(18,5): error TS2741: Property 'a' is missing in type 'Record<string, string>' but required in type 'Record2<"a", string>'.
+tests/cases/compiler/consistentAliasVsNonAliasRecordBehavior.ts(22,5): error TS2741: Property 'a' is missing in type 'Record2<string, string>' but required in type 'Record<"a", string>'.
+tests/cases/compiler/consistentAliasVsNonAliasRecordBehavior.ts(34,5): error TS2741: Property 'a' is missing in type 'Record<string, T>' but required in type 'Record2<"a", T>'.
+tests/cases/compiler/consistentAliasVsNonAliasRecordBehavior.ts(38,5): error TS2741: Property 'a' is missing in type 'Record2<string, T>' but required in type 'Record<"a", T>'.
+
+
+==== tests/cases/compiler/consistentAliasVsNonAliasRecordBehavior.ts (4 errors) ====
+    // TODO: FIXME: All the below cases labeled `no error` _should be an error_, and are only prevented from so being
+    // by incorrect variance-based relationships
+    // Ref: https://github.com/Microsoft/TypeScript/issues/29698
+    
+    type Record2<K extends keyof any, T> = {
+        [P in K]: T;
+    };
+    
+    function defaultRecord(x: Record<'a', string>, y: Record<string, string>) {
+        x = y; // no error, but error expected.
+    }
+    
+    function customRecord(x: Record2<'a', string>, y: Record2<string, string>) {
+        x = y; // no error, but error expected.
+    }
+    
+    function mixed1(x: Record2<'a', string>, y: Record<string, string>) {
+        x = y; // error
+        ~
+!!! error TS2741: Property 'a' is missing in type 'Record<string, string>' but required in type 'Record2<"a", string>'.
+    }
+    
+    function mixed2(x: Record<'a', string>, y: Record2<string, string>) {
+        x = y; // error
+        ~
+!!! error TS2741: Property 'a' is missing in type 'Record2<string, string>' but required in type 'Record<"a", string>'.
+    }
+    
+    function defaultRecord2<T>(x: Record<'a', T>, y: Record<string, T>) {
+        x = y; // no error, but error expected.
+    }
+    
+    function customRecord2<T>(x: Record2<'a', T>, y: Record2<string, T>) {
+        x = y; // no error, but error expected.
+    }
+    
+    function mixed3<T>(x: Record2<'a', T>, y: Record<string, T>) {
+        x = y; // error
+        ~
+!!! error TS2741: Property 'a' is missing in type 'Record<string, T>' but required in type 'Record2<"a", T>'.
+    }
+    
+    function mixed4<T>(x: Record<'a', T>, y: Record2<string, T>) {
+        x = y; // error
+        ~
+!!! error TS2741: Property 'a' is missing in type 'Record2<string, T>' but required in type 'Record<"a", T>'.
+    }
+    

tests/baselines/reference/consistentAliasVsNonAliasRecordBehavior.js

@@ -0,0 +1,70 @@
+//// [consistentAliasVsNonAliasRecordBehavior.ts]
+// TODO: FIXME: All the below cases labeled `no error` _should be an error_, and are only prevented from so being
+// by incorrect variance-based relationships
+// Ref: https://github.com/Microsoft/TypeScript/issues/29698
+
+type Record2<K extends keyof any, T> = {
+    [P in K]: T;
+};
+
+function defaultRecord(x: Record<'a', string>, y: Record<string, string>) {
+    x = y; // no error, but error expected.
+}
+
+function customRecord(x: Record2<'a', string>, y: Record2<string, string>) {
+    x = y; // no error, but error expected.
+}
+
+function mixed1(x: Record2<'a', string>, y: Record<string, string>) {
+    x = y; // error
+}
+
+function mixed2(x: Record<'a', string>, y: Record2<string, string>) {
+    x = y; // error
+}
+
+function defaultRecord2<T>(x: Record<'a', T>, y: Record<string, T>) {
+    x = y; // no error, but error expected.
+}
+
+function customRecord2<T>(x: Record2<'a', T>, y: Record2<string, T>) {
+    x = y; // no error, but error expected.
+}
+
+function mixed3<T>(x: Record2<'a', T>, y: Record<string, T>) {
+    x = y; // error
+}
+
+function mixed4<T>(x: Record<'a', T>, y: Record2<string, T>) {
+    x = y; // error
+}
+
+
+//// [consistentAliasVsNonAliasRecordBehavior.js]
+// TODO: FIXME: All the below cases labeled `no error` _should be an error_, and are only prevented from so being
+// by incorrect variance-based relationships
+// Ref: https://github.com/Microsoft/TypeScript/issues/29698
+function defaultRecord(x, y) {
+    x = y; // no error, but error expected.
+}
+function customRecord(x, y) {
+    x = y; // no error, but error expected.
+}
+function mixed1(x, y) {
+    x = y; // error
+}
+function mixed2(x, y) {
+    x = y; // error
+}
+function defaultRecord2(x, y) {
+    x = y; // no error, but error expected.
+}
+function customRecord2(x, y) {
+    x = y; // no error, but error expected.
+}
+function mixed3(x, y) {
+    x = y; // error
+}
+function mixed4(x, y) {
+    x = y; // error
+}

tests/baselines/reference/consistentAliasVsNonAliasRecordBehavior.symbols

@@ -0,0 +1,125 @@
+=== tests/cases/compiler/consistentAliasVsNonAliasRecordBehavior.ts ===
+// TODO: FIXME: All the below cases labeled `no error` _should be an error_, and are only prevented from so being
+// by incorrect variance-based relationships
+// Ref: https://github.com/Microsoft/TypeScript/issues/29698
+
+type Record2<K extends keyof any, T> = {
+>Record2 : Symbol(Record2, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 0, 0))
+>K : Symbol(K, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 4, 13))
+>T : Symbol(T, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 4, 33))
+
+    [P in K]: T;
+>P : Symbol(P, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 5, 5))
+>K : Symbol(K, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 4, 13))
+>T : Symbol(T, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 4, 33))
+
+};
+
+function defaultRecord(x: Record<'a', string>, y: Record<string, string>) {
+>defaultRecord : Symbol(defaultRecord, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 6, 2))
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 8, 23))
+>Record : Symbol(Record, Decl(lib.es5.d.ts, --, --))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 8, 46))
+>Record : Symbol(Record, Decl(lib.es5.d.ts, --, --))
+
+    x = y; // no error, but error expected.
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 8, 23))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 8, 46))
+}
+
+function customRecord(x: Record2<'a', string>, y: Record2<string, string>) {
+>customRecord : Symbol(customRecord, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 10, 1))
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 12, 22))
+>Record2 : Symbol(Record2, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 0, 0))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 12, 46))
+>Record2 : Symbol(Record2, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 0, 0))
+
+    x = y; // no error, but error expected.
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 12, 22))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 12, 46))
+}
+
+function mixed1(x: Record2<'a', string>, y: Record<string, string>) {
+>mixed1 : Symbol(mixed1, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 14, 1))
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 16, 16))
+>Record2 : Symbol(Record2, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 0, 0))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 16, 40))
+>Record : Symbol(Record, Decl(lib.es5.d.ts, --, --))
+
+    x = y; // error
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 16, 16))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 16, 40))
+}
+
+function mixed2(x: Record<'a', string>, y: Record2<string, string>) {
+>mixed2 : Symbol(mixed2, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 18, 1))
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 20, 16))
+>Record : Symbol(Record, Decl(lib.es5.d.ts, --, --))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 20, 39))
+>Record2 : Symbol(Record2, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 0, 0))
+
+    x = y; // error
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 20, 16))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 20, 39))
+}
+
+function defaultRecord2<T>(x: Record<'a', T>, y: Record<string, T>) {
+>defaultRecord2 : Symbol(defaultRecord2, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 22, 1))
+>T : Symbol(T, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 24, 24))
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 24, 27))
+>Record : Symbol(Record, Decl(lib.es5.d.ts, --, --))
+>T : Symbol(T, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 24, 24))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 24, 45))
+>Record : Symbol(Record, Decl(lib.es5.d.ts, --, --))
+>T : Symbol(T, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 24, 24))
+
+    x = y; // no error, but error expected.
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 24, 27))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 24, 45))
+}
+
+function customRecord2<T>(x: Record2<'a', T>, y: Record2<string, T>) {
+>customRecord2 : Symbol(customRecord2, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 26, 1))
+>T : Symbol(T, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 28, 23))
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 28, 26))
+>Record2 : Symbol(Record2, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 0, 0))
+>T : Symbol(T, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 28, 23))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 28, 45))
+>Record2 : Symbol(Record2, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 0, 0))
+>T : Symbol(T, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 28, 23))
+
+    x = y; // no error, but error expected.
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 28, 26))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 28, 45))
+}
+
+function mixed3<T>(x: Record2<'a', T>, y: Record<string, T>) {
+>mixed3 : Symbol(mixed3, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 30, 1))
+>T : Symbol(T, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 32, 16))
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 32, 19))
+>Record2 : Symbol(Record2, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 0, 0))
+>T : Symbol(T, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 32, 16))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 32, 38))
+>Record : Symbol(Record, Decl(lib.es5.d.ts, --, --))
+>T : Symbol(T, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 32, 16))
+
+    x = y; // error
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 32, 19))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 32, 38))
+}
+
+function mixed4<T>(x: Record<'a', T>, y: Record2<string, T>) {
+>mixed4 : Symbol(mixed4, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 34, 1))
+>T : Symbol(T, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 36, 16))
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 36, 19))
+>Record : Symbol(Record, Decl(lib.es5.d.ts, --, --))
+>T : Symbol(T, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 36, 16))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 36, 37))
+>Record2 : Symbol(Record2, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 0, 0))
+>T : Symbol(T, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 36, 16))
+
+    x = y; // error
+>x : Symbol(x, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 36, 19))
+>y : Symbol(y, Decl(consistentAliasVsNonAliasRecordBehavior.ts, 36, 37))
+}
+

tests/baselines/reference/consistentAliasVsNonAliasRecordBehavior.types

@@ -0,0 +1,99 @@
+=== tests/cases/compiler/consistentAliasVsNonAliasRecordBehavior.ts ===
+// TODO: FIXME: All the below cases labeled `no error` _should be an error_, and are only prevented from so being
+// by incorrect variance-based relationships
+// Ref: https://github.com/Microsoft/TypeScript/issues/29698
+
+type Record2<K extends keyof any, T> = {
+>Record2 : Record2<K, T>
+
+    [P in K]: T;
+};
+
+function defaultRecord(x: Record<'a', string>, y: Record<string, string>) {
+>defaultRecord : (x: Record<"a", string>, y: Record<string, string>) => void
+>x : Record<"a", string>
+>y : Record<string, string>
+
+    x = y; // no error, but error expected.
+>x = y : Record<string, string>
+>x : Record<"a", string>
+>y : Record<string, string>
+}
+
+function customRecord(x: Record2<'a', string>, y: Record2<string, string>) {
+>customRecord : (x: Record2<"a", string>, y: Record2<string, string>) => void
+>x : Record2<"a", string>
+>y : Record2<string, string>
+
+    x = y; // no error, but error expected.
+>x = y : Record2<string, string>
+>x : Record2<"a", string>
+>y : Record2<string, string>
+}
+
+function mixed1(x: Record2<'a', string>, y: Record<string, string>) {
+>mixed1 : (x: Record2<"a", string>, y: Record<string, string>) => void
+>x : Record2<"a", string>
+>y : Record<string, string>
+
+    x = y; // error
+>x = y : Record<string, string>
+>x : Record2<"a", string>
+>y : Record<string, string>
+}
+
+function mixed2(x: Record<'a', string>, y: Record2<string, string>) {
+>mixed2 : (x: Record<"a", string>, y: Record2<string, string>) => void
+>x : Record<"a", string>
+>y : Record2<string, string>
+
+    x = y; // error
+>x = y : Record2<string, string>
+>x : Record<"a", string>
+>y : Record2<string, string>
+}
+
+function defaultRecord2<T>(x: Record<'a', T>, y: Record<string, T>) {
+>defaultRecord2 : <T>(x: Record<"a", T>, y: Record<string, T>) => void
+>x : Record<"a", T>
+>y : Record<string, T>
+
+    x = y; // no error, but error expected.
+>x = y : Record<string, T>
+>x : Record<"a", T>
+>y : Record<string, T>
+}
+
+function customRecord2<T>(x: Record2<'a', T>, y: Record2<string, T>) {
+>customRecord2 : <T>(x: Record2<"a", T>, y: Record2<string, T>) => void
+>x : Record2<"a", T>
+>y : Record2<string, T>
+
+    x = y; // no error, but error expected.
+>x = y : Record2<string, T>
+>x : Record2<"a", T>
+>y : Record2<string, T>
+}
+
+function mixed3<T>(x: Record2<'a', T>, y: Record<string, T>) {
+>mixed3 : <T>(x: Record2<"a", T>, y: Record<string, T>) => void
+>x : Record2<"a", T>
+>y : Record<string, T>
+
+    x = y; // error
+>x = y : Record<string, T>
+>x : Record2<"a", T>
+>y : Record<string, T>
+}
+
+function mixed4<T>(x: Record<'a', T>, y: Record2<string, T>) {
+>mixed4 : <T>(x: Record<"a", T>, y: Record2<string, T>) => void
+>x : Record<"a", T>
+>y : Record2<string, T>
+
+    x = y; // error
+>x = y : Record2<string, T>
+>x : Record<"a", T>
+>y : Record2<string, T>
+}
+

tests/baselines/reference/convertKeywordsYes.errors.txt

@@ -1,3 +1,4 @@
+tests/cases/compiler/convertKeywordsYes.ts(175,12): error TS18006: Classes may not have a field named 'constructor'.
 tests/cases/compiler/convertKeywordsYes.ts(292,11): error TS1213: Identifier expected. 'implements' is a reserved word in strict mode. Class definitions are automatically in strict mode.
 tests/cases/compiler/convertKeywordsYes.ts(293,11): error TS1213: Identifier expected. 'interface' is a reserved word in strict mode. Class definitions are automatically in strict mode.
 tests/cases/compiler/convertKeywordsYes.ts(294,11): error TS1213: Identifier expected. 'let' is a reserved word in strict mode. Class definitions are automatically in strict mode.
@@ -9,7 +10,7 @@ tests/cases/compiler/convertKeywordsYes.ts(301,11): error TS1213: Identifier exp
 tests/cases/compiler/convertKeywordsYes.ts(303,11): error TS1213: Identifier expected. 'yield' is a reserved word in strict mode. Class definitions are automatically in strict mode.
 
 
-==== tests/cases/compiler/convertKeywordsYes.ts (9 errors) ====
+==== tests/cases/compiler/convertKeywordsYes.ts (10 errors) ====
     // reserved ES5 future in strict mode
     
     var constructor = 0;
@@ -185,6 +186,8 @@ tests/cases/compiler/convertKeywordsYes.ts(303,11): error TS1213: Identifier exp
     
     class bigClass {
         public "constructor" = 0;
+               ~~~~~~~~~~~~~
+!!! error TS18006: Classes may not have a field named 'constructor'.
         public any = 0;
         public boolean = 0;
         public implements = 0;

tests/baselines/reference/destructuringAssignmentWithStrictNullChecks.js

@@ -9,8 +9,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var bar;

tests/baselines/reference/destructuringInitializerContextualTypeFromContext.js

@@ -43,8 +43,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var Parent = function (_a) {

tests/baselines/reference/destructuringObjectBindingPatternAndAssignment5.js

@@ -12,8 +12,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 function a() {

tests/baselines/reference/forLoopWithDestructuringDoesNotElideFollowingStatement.js

@@ -9,8 +9,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var array = [{ a: 0, b: 1 }];

tests/baselines/reference/genericIsNeverEmptyObject.js

@@ -29,8 +29,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 function test(obj) {

tests/baselines/reference/genericObjectRest.js

@@ -35,8 +35,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 const a = 'a';

tests/baselines/reference/invariantGenericErrorElaboration.errors.txt

@@ -0,0 +1,52 @@
+tests/cases/compiler/invariantGenericErrorElaboration.ts(3,7): error TS2322: Type 'Num' is not assignable to type 'Runtype<any>'.
+  Types of property 'constraint' are incompatible.
+    Type 'Constraint<Num>' is not assignable to type 'Constraint<Runtype<any>>'.
+      Types of property 'constraint' are incompatible.
+        Type 'Constraint<Constraint<Num>>' is not assignable to type 'Constraint<Constraint<Runtype<any>>>'.
+          Types of property 'constraint' are incompatible.
+            Type 'Constraint<Constraint<Constraint<Num>>>' is not assignable to type 'Constraint<Constraint<Constraint<Runtype<any>>>>'.
+              Type 'Constraint<Constraint<Runtype<any>>>' is not assignable to type 'Constraint<Constraint<Num>>'.
+                Types of property 'underlying' are incompatible.
+                  Type 'Constraint<Runtype<any>>' is not assignable to type 'Constraint<Num>'.
+tests/cases/compiler/invariantGenericErrorElaboration.ts(4,19): error TS2322: Type 'Num' is not assignable to type 'Runtype<any>'.
+
+
+==== tests/cases/compiler/invariantGenericErrorElaboration.ts (2 errors) ====
+    // Repro from #19746
+    
+    const wat: Runtype<any> = Num;
+          ~~~
+!!! error TS2322: Type 'Num' is not assignable to type 'Runtype<any>'.
+!!! error TS2322:   Types of property 'constraint' are incompatible.
+!!! error TS2322:     Type 'Constraint<Num>' is not assignable to type 'Constraint<Runtype<any>>'.
+!!! error TS2322:       Types of property 'constraint' are incompatible.
+!!! error TS2322:         Type 'Constraint<Constraint<Num>>' is not assignable to type 'Constraint<Constraint<Runtype<any>>>'.
+!!! error TS2322:           Types of property 'constraint' are incompatible.
+!!! error TS2322:             Type 'Constraint<Constraint<Constraint<Num>>>' is not assignable to type 'Constraint<Constraint<Constraint<Runtype<any>>>>'.
+!!! error TS2322:               Type 'Constraint<Constraint<Runtype<any>>>' is not assignable to type 'Constraint<Constraint<Num>>'.
+!!! error TS2322:                 Types of property 'underlying' are incompatible.
+!!! error TS2322:                   Type 'Constraint<Runtype<any>>' is not assignable to type 'Constraint<Num>'.
+!!! related TS2728 tests/cases/compiler/invariantGenericErrorElaboration.ts:12:3: 'tag' is declared here.
+    const Foo = Obj({ foo: Num })
+                      ~~~
+!!! error TS2322: Type 'Num' is not assignable to type 'Runtype<any>'.
+!!! related TS6501 tests/cases/compiler/invariantGenericErrorElaboration.ts:17:34: The expected type comes from this index signature.
+    
+    interface Runtype<A> {
+      constraint: Constraint<this>
+      witness: A
+    }
+    
+    interface Num extends Runtype<number> {
+      tag: 'number'
+    }
+    declare const Num: Num
+    
+    interface Obj<O extends { [_ in string]: Runtype<any> }> extends Runtype<{[K in keyof O]: O[K]['witness'] }> {}
+    declare function Obj<O extends { [_: string]: Runtype<any> }>(fields: O): Obj<O>;
+    
+    interface Constraint<A extends Runtype<any>> extends Runtype<A['witness']> {
+      underlying: A,
+      check: (x: A['witness']) => void,
+    }
+    

tests/baselines/reference/invariantGenericErrorElaboration.types

@@ -6,8 +6,8 @@ const wat: Runtype<any> = Num;
 >Num : Num
 
 const Foo = Obj({ foo: Num })
->Foo : Obj<{ foo: Num; }>
->Obj({ foo: Num }) : Obj<{ foo: Num; }>
+>Foo : any
+>Obj({ foo: Num }) : any
 >Obj : <O extends { [_: string]: Runtype<any>; }>(fields: O) => Obj<O>
 >{ foo: Num } : { foo: Num; }
 >foo : Num

tests/baselines/reference/literalTypeWidening.js

@@ -156,8 +156,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 exports.__esModule = true;

tests/baselines/reference/mappedTypeConstraints.js

@@ -42,8 +42,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 function f0(obj) {

tests/baselines/reference/mappedTypes5.errors.txt

@@ -1,8 +1,6 @@
 tests/cases/conformance/types/mapped/mappedTypes5.ts(6,9): error TS2322: Type 'Partial<T>' is not assignable to type 'Readonly<T>'.
 tests/cases/conformance/types/mapped/mappedTypes5.ts(8,9): error TS2322: Type 'Partial<Readonly<T>>' is not assignable to type 'Readonly<T>'.
 tests/cases/conformance/types/mapped/mappedTypes5.ts(9,9): error TS2322: Type 'Readonly<Partial<T>>' is not assignable to type 'Readonly<T>'.
-  Type 'Partial<T>' is not assignable to type 'T'.
-    'Partial<T>' is assignable to the constraint of type 'T', but 'T' could be instantiated with a different subtype of constraint '{}'.
 
 
 ==== tests/cases/conformance/types/mapped/mappedTypes5.ts (3 errors) ====
@@ -21,8 +19,6 @@ tests/cases/conformance/types/mapped/mappedTypes5.ts(9,9): error TS2322: Type 'R
         let b4: Readonly<T> = rp;  // Error
             ~~
 !!! error TS2322: Type 'Readonly<Partial<T>>' is not assignable to type 'Readonly<T>'.
-!!! error TS2322:   Type 'Partial<T>' is not assignable to type 'T'.
-!!! error TS2322:     'Partial<T>' is assignable to the constraint of type 'T', but 'T' could be instantiated with a different subtype of constraint '{}'.
         let c1: Partial<Readonly<T>> = p;
         let c2: Partial<Readonly<T>> = r;
         let c3: Partial<Readonly<T>> = pr;

tests/baselines/reference/noImplicitAnyLoopCrash.errors.txt

@@ -0,0 +1,18 @@
+tests/cases/compiler/noImplicitAnyLoopCrash.ts(4,16): error TS2556: Expected 0 arguments, but got 1 or more.
+tests/cases/compiler/noImplicitAnyLoopCrash.ts(4,19): error TS2461: Type 'number' is not an array type.
+tests/cases/compiler/noImplicitAnyLoopCrash.ts(4,19): error TS2461: Type 'undefined' is not an array type.
+
+
+==== tests/cases/compiler/noImplicitAnyLoopCrash.ts (3 errors) ====
+    let foo = () => {};
+    let bar;
+    while (1) {
+        bar = ~foo(...bar);
+                   ~~~~~~
+!!! error TS2556: Expected 0 arguments, but got 1 or more.
+                      ~~~
+!!! error TS2461: Type 'number' is not an array type.
+                      ~~~
+!!! error TS2461: Type 'undefined' is not an array type.
+    }
+    

tests/baselines/reference/noImplicitAnyLoopCrash.js

@@ -0,0 +1,14 @@
+//// [noImplicitAnyLoopCrash.ts]
+let foo = () => {};
+let bar;
+while (1) {
+    bar = ~foo(...bar);
+}
+
+
+//// [noImplicitAnyLoopCrash.js]
+var foo = function () { };
+var bar;
+while (1) {
+    bar = ~foo.apply(void 0, bar);
+}

tests/baselines/reference/noImplicitAnyLoopCrash.symbols

@@ -0,0 +1,14 @@
+=== tests/cases/compiler/noImplicitAnyLoopCrash.ts ===
+let foo = () => {};
+>foo : Symbol(foo, Decl(noImplicitAnyLoopCrash.ts, 0, 3))
+
+let bar;
+>bar : Symbol(bar, Decl(noImplicitAnyLoopCrash.ts, 1, 3))
+
+while (1) {
+    bar = ~foo(...bar);
+>bar : Symbol(bar, Decl(noImplicitAnyLoopCrash.ts, 1, 3))
+>foo : Symbol(foo, Decl(noImplicitAnyLoopCrash.ts, 0, 3))
+>bar : Symbol(bar, Decl(noImplicitAnyLoopCrash.ts, 1, 3))
+}
+

tests/baselines/reference/noImplicitAnyLoopCrash.types

@@ -0,0 +1,21 @@
+=== tests/cases/compiler/noImplicitAnyLoopCrash.ts ===
+let foo = () => {};
+>foo : () => void
+>() => {} : () => void
+
+let bar;
+>bar : any
+
+while (1) {
+>1 : 1
+
+    bar = ~foo(...bar);
+>bar = ~foo(...bar) : number
+>bar : any
+>~foo(...bar) : number
+>foo(...bar) : void
+>foo : () => void
+>...bar : any
+>bar : number
+}
+

tests/baselines/reference/nonPrimitiveAccessProperty.js

@@ -13,8 +13,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var a;

tests/baselines/reference/objectBindingPattern_restElementWithPropertyName.js

@@ -8,8 +8,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var b = __rest({}, []);

tests/baselines/reference/objectRest.js

@@ -53,8 +53,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var _a, _b, _c, _d, _e;

tests/baselines/reference/objectRestAssignment.js

@@ -20,8 +20,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var _a, _b, _c;

tests/baselines/reference/objectRestForOf.js

@@ -20,8 +20,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 let array;

tests/baselines/reference/objectRestNegative.js

@@ -24,8 +24,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var o = { a: 1, b: 'no' };

tests/baselines/reference/objectRestParameter.js

@@ -27,8 +27,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 function cloneAgain(_a) {

tests/baselines/reference/objectRestParameterES5.js

@@ -27,8 +27,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 function cloneAgain(_a) {

tests/baselines/reference/objectRestReadonly.js

@@ -23,8 +23,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var obj = {

tests/baselines/reference/parameterInitializerBeforeDestructuringEmit.js

@@ -26,8 +26,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 function foobar(_a) {

tests/baselines/reference/parser.forAwait.es2018.errors.txt

@@ -52,6 +52,7 @@ tests/cases/conformance/parser/ecmascript2018/forAwait/topLevelWithExprIsError.t
         for await (const x of y) {
             ~~~~~
 !!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+!!! related TS1356 tests/cases/conformance/parser/ecmascript2018/forAwait/inFunctionDeclWithDeclIsError.ts:1:10: Did you mean to mark this function as 'async'?
         }
     }
 ==== tests/cases/conformance/parser/ecmascript2018/forAwait/inFunctionDeclWithExprIsError.ts (1 errors) ====
@@ -60,6 +61,7 @@ tests/cases/conformance/parser/ecmascript2018/forAwait/topLevelWithExprIsError.t
         for await (x of y) {
             ~~~~~
 !!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+!!! related TS1356 tests/cases/conformance/parser/ecmascript2018/forAwait/inFunctionDeclWithExprIsError.ts:1:10: Did you mean to mark this function as 'async'?
         }
     }
 ==== tests/cases/conformance/parser/ecmascript2018/forAwait/inAsyncFunctionWithDeclIsOk.ts (0 errors) ====
@@ -92,6 +94,7 @@ tests/cases/conformance/parser/ecmascript2018/forAwait/topLevelWithExprIsError.t
         for await (const x of y) {
             ~~~~~
 !!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+!!! related TS1356 tests/cases/conformance/parser/ecmascript2018/forAwait/inGeneratorWithDeclIsError.ts:1:11: Did you mean to mark this function as 'async'?
         }
     }
 ==== tests/cases/conformance/parser/ecmascript2018/forAwait/inGeneratorWithExprIsError.ts (1 errors) ====
@@ -100,6 +103,7 @@ tests/cases/conformance/parser/ecmascript2018/forAwait/topLevelWithExprIsError.t
         for await (x of y) {
             ~~~~~
 !!! error TS1103: A 'for-await-of' statement is only allowed within an async function or async generator.
+!!! related TS1356 tests/cases/conformance/parser/ecmascript2018/forAwait/inGeneratorWithExprIsError.ts:1:11: Did you mean to mark this function as 'async'?
         }
     }
     

tests/baselines/reference/propertyNamedConstructor.errors.txt

@@ -0,0 +1,14 @@
+tests/cases/conformance/classes/propertyMemberDeclarations/propertyNamedConstructor.ts(2,3): error TS18006: Classes may not have a field named 'constructor'.
+
+
+==== tests/cases/conformance/classes/propertyMemberDeclarations/propertyNamedConstructor.ts (1 errors) ====
+    class X1 {
+      "constructor" = 3; // Error
+      ~~~~~~~~~~~~~
+!!! error TS18006: Classes may not have a field named 'constructor'.
+    }
+    
+    class X2 {
+      ["constructor"] = 3;
+    }
+    

tests/baselines/reference/propertyNamedConstructor.js

@@ -0,0 +1,23 @@
+//// [propertyNamedConstructor.ts]
+class X1 {
+  "constructor" = 3; // Error
+}
+
+class X2 {
+  ["constructor"] = 3;
+}
+
+
+//// [propertyNamedConstructor.js]
+var X1 = /** @class */ (function () {
+    function X1() {
+        this["constructor"] = 3; // Error
+    }
+    return X1;
+}());
+var X2 = /** @class */ (function () {
+    function X2() {
+        this["constructor"] = 3;
+    }
+    return X2;
+}());

tests/baselines/reference/propertyNamedConstructor.symbols

@@ -0,0 +1,16 @@
+=== tests/cases/conformance/classes/propertyMemberDeclarations/propertyNamedConstructor.ts ===
+class X1 {
+>X1 : Symbol(X1, Decl(propertyNamedConstructor.ts, 0, 0))
+
+  "constructor" = 3; // Error
+>"constructor" : Symbol(X1["constructor"], Decl(propertyNamedConstructor.ts, 0, 10))
+}
+
+class X2 {
+>X2 : Symbol(X2, Decl(propertyNamedConstructor.ts, 2, 1))
+
+  ["constructor"] = 3;
+>["constructor"] : Symbol(X2["constructor"], Decl(propertyNamedConstructor.ts, 4, 10))
+>"constructor" : Symbol(X2["constructor"], Decl(propertyNamedConstructor.ts, 4, 10))
+}
+

tests/baselines/reference/propertyNamedConstructor.types

@@ -0,0 +1,18 @@
+=== tests/cases/conformance/classes/propertyMemberDeclarations/propertyNamedConstructor.ts ===
+class X1 {
+>X1 : X1
+
+  "constructor" = 3; // Error
+>"constructor" : number
+>3 : 3
+}
+
+class X2 {
+>X2 : X2
+
+  ["constructor"] = 3;
+>["constructor"] : number
+>"constructor" : "constructor"
+>3 : 3
+}
+

tests/baselines/reference/quotedConstructors.errors.txt

@@ -0,0 +1,30 @@
+tests/cases/conformance/classes/constructorDeclarations/quotedConstructors.ts(2,5): error TS18005: Quoted constructors have previously been interpreted as methods, which is incorrect. In TypeScript 3.6, they will be correctly parsed as constructors. In the meantime, consider using 'constructor()' to write a constructor, or '["constructor"]()' to write a method.
+tests/cases/conformance/classes/constructorDeclarations/quotedConstructors.ts(6,5): error TS18005: Quoted constructors have previously been interpreted as methods, which is incorrect. In TypeScript 3.6, they will be correctly parsed as constructors. In the meantime, consider using 'constructor()' to write a constructor, or '["constructor"]()' to write a method.
+tests/cases/conformance/classes/constructorDeclarations/quotedConstructors.ts(14,5): error TS18005: Quoted constructors have previously been interpreted as methods, which is incorrect. In TypeScript 3.6, they will be correctly parsed as constructors. In the meantime, consider using 'constructor()' to write a constructor, or '["constructor"]()' to write a method.
+
+
+==== tests/cases/conformance/classes/constructorDeclarations/quotedConstructors.ts (3 errors) ====
+    class C {
+        "constructor"() {} // Error in 3.5
+        ~~~~~~~~~~~~~
+!!! error TS18005: Quoted constructors have previously been interpreted as methods, which is incorrect. In TypeScript 3.6, they will be correctly parsed as constructors. In the meantime, consider using 'constructor()' to write a constructor, or '["constructor"]()' to write a method.
+    }
+    
+    class D {
+        'constructor'() {} // Error in 3.5
+        ~~~~~~~~~~~~~
+!!! error TS18005: Quoted constructors have previously been interpreted as methods, which is incorrect. In TypeScript 3.6, they will be correctly parsed as constructors. In the meantime, consider using 'constructor()' to write a constructor, or '["constructor"]()' to write a method.
+    }
+    
+    class E {
+        ['constructor']() {}
+    }
+    
+    new class {
+        "constructor"() {} // Error in 3.5
+        ~~~~~~~~~~~~~
+!!! error TS18005: Quoted constructors have previously been interpreted as methods, which is incorrect. In TypeScript 3.6, they will be correctly parsed as constructors. In the meantime, consider using 'constructor()' to write a constructor, or '["constructor"]()' to write a method.
+    };
+    
+    var o = { "constructor"() {} };
+    

tests/baselines/reference/quotedConstructors.js

@@ -0,0 +1,46 @@
+//// [quotedConstructors.ts]
+class C {
+    "constructor"() {} // Error in 3.5
+}
+
+class D {
+    'constructor'() {} // Error in 3.5
+}
+
+class E {
+    ['constructor']() {}
+}
+
+new class {
+    "constructor"() {} // Error in 3.5
+};
+
+var o = { "constructor"() {} };
+
+
+//// [quotedConstructors.js]
+var C = /** @class */ (function () {
+    function C() {
+    }
+    C.prototype["constructor"] = function () { }; // Error in 3.5
+    return C;
+}());
+var D = /** @class */ (function () {
+    function D() {
+    }
+    D.prototype['constructor'] = function () { }; // Error in 3.5
+    return D;
+}());
+var E = /** @class */ (function () {
+    function E() {
+    }
+    E.prototype['constructor'] = function () { };
+    return E;
+}());
+new /** @class */ (function () {
+    function class_1() {
+    }
+    class_1.prototype["constructor"] = function () { }; // Error in 3.5
+    return class_1;
+}());
+var o = { "constructor": function () { } };

tests/baselines/reference/quotedConstructors.symbols

@@ -0,0 +1,33 @@
+=== tests/cases/conformance/classes/constructorDeclarations/quotedConstructors.ts ===
+class C {
+>C : Symbol(C, Decl(quotedConstructors.ts, 0, 0))
+
+    "constructor"() {} // Error in 3.5
+>"constructor" : Symbol(C["constructor"], Decl(quotedConstructors.ts, 0, 9))
+}
+
+class D {
+>D : Symbol(D, Decl(quotedConstructors.ts, 2, 1))
+
+    'constructor'() {} // Error in 3.5
+>'constructor' : Symbol(D['constructor'], Decl(quotedConstructors.ts, 4, 9))
+}
+
+class E {
+>E : Symbol(E, Decl(quotedConstructors.ts, 6, 1))
+
+    ['constructor']() {}
+>['constructor'] : Symbol(E['constructor'], Decl(quotedConstructors.ts, 8, 9))
+>'constructor' : Symbol(E['constructor'], Decl(quotedConstructors.ts, 8, 9))
+}
+
+new class {
+    "constructor"() {} // Error in 3.5
+>"constructor" : Symbol((Anonymous class)["constructor"], Decl(quotedConstructors.ts, 12, 11))
+
+};
+
+var o = { "constructor"() {} };
+>o : Symbol(o, Decl(quotedConstructors.ts, 16, 3))
+>"constructor" : Symbol("constructor", Decl(quotedConstructors.ts, 16, 9))
+

tests/baselines/reference/quotedConstructors.types

@@ -0,0 +1,37 @@
+=== tests/cases/conformance/classes/constructorDeclarations/quotedConstructors.ts ===
+class C {
+>C : C
+
+    "constructor"() {} // Error in 3.5
+>"constructor" : () => void
+}
+
+class D {
+>D : D
+
+    'constructor'() {} // Error in 3.5
+>'constructor' : () => void
+}
+
+class E {
+>E : E
+
+    ['constructor']() {}
+>['constructor'] : () => void
+>'constructor' : "constructor"
+}
+
+new class {
+>new class {    "constructor"() {} // Error in 3.5} : (Anonymous class)
+>class {    "constructor"() {} // Error in 3.5} : typeof (Anonymous class)
+
+    "constructor"() {} // Error in 3.5
+>"constructor" : () => void
+
+};
+
+var o = { "constructor"() {} };
+>o : { "constructor"(): void; }
+>{ "constructor"() {} } : { "constructor"(): void; }
+>"constructor" : () => void
+

tests/baselines/reference/recursiveTypeComparison.errors.txt

@@ -0,0 +1,27 @@
+tests/cases/compiler/recursiveTypeComparison.ts(14,5): error TS2322: Type 'Observable<{}>' is not assignable to type 'Property<number>'.
+  Types of property 'needThisOne' are incompatible.
+    Type 'Observable<{}>' is not assignable to type 'Observable<number>'.
+      Type '{}' is not assignable to type 'number'.
+
+
+==== tests/cases/compiler/recursiveTypeComparison.ts (1 errors) ====
+    // Before fix this would take an exceeding long time to complete (#1170)
+    
+    interface Observable<T> {
+        // This member can't be of type T, Property<T>, or Observable<anything but T>
+        needThisOne: Observable<T>;
+        // Add more to make it slower
+        expo1: Property<T[]>; //  0.31 seconds in check
+        expo2: Property<T[]>; //  3.11 seconds
+        expo3: Property<T[]>; // 82.28 seconds
+    }
+    interface Property<T> extends Observable<T> { }
+    
+    var p: Observable<{}>;
+    var stuck: Property<number> = p;
+        ~~~~~
+!!! error TS2322: Type 'Observable<{}>' is not assignable to type 'Property<number>'.
+!!! error TS2322:   Types of property 'needThisOne' are incompatible.
+!!! error TS2322:     Type 'Observable<{}>' is not assignable to type 'Observable<number>'.
+!!! error TS2322:       Type '{}' is not assignable to type 'number'.
+    

tests/baselines/reference/requiredMappedTypeModifierTrumpsVariance.errors.txt

@@ -0,0 +1,61 @@
+tests/cases/compiler/requiredMappedTypeModifierTrumpsVariance.ts(5,1): error TS2741: Property 'a' is missing in type 'Required<{ b?: 1; x: 1; }>' but required in type 'Required<{ a?: 1; x: 1; }>'.
+tests/cases/compiler/requiredMappedTypeModifierTrumpsVariance.ts(6,1): error TS2741: Property 'b' is missing in type 'Required<{ a?: 1; x: 1; }>' but required in type 'Required<{ b?: 1; x: 1; }>'.
+tests/cases/compiler/requiredMappedTypeModifierTrumpsVariance.ts(8,3): error TS2339: Property 'b' does not exist on type 'Required<{ a?: 1; x: 1; }>'.
+tests/cases/compiler/requiredMappedTypeModifierTrumpsVariance.ts(9,3): error TS2339: Property 'a' does not exist on type 'Required<{ b?: 1; x: 1; }>'.
+tests/cases/compiler/requiredMappedTypeModifierTrumpsVariance.ts(18,1): error TS2322: Type 'Foo<{ b?: 1; x: 1; }>' is not assignable to type 'Foo<{ a?: 1; x: 1; }>'.
+  Types of property 'a' are incompatible.
+    Property 'a' is missing in type 'Required<{ b?: 1; x: 1; }>' but required in type 'Required<{ a?: 1; x: 1; }>'.
+tests/cases/compiler/requiredMappedTypeModifierTrumpsVariance.ts(19,1): error TS2322: Type 'Foo<{ a?: 1; x: 1; }>' is not assignable to type 'Foo<{ b?: 1; x: 1; }>'.
+  Types of property 'a' are incompatible.
+    Property 'b' is missing in type 'Required<{ a?: 1; x: 1; }>' but required in type 'Required<{ b?: 1; x: 1; }>'.
+tests/cases/compiler/requiredMappedTypeModifierTrumpsVariance.ts(21,6): error TS2339: Property 'b' does not exist on type 'Required<{ a?: 1; x: 1; }>'.
+tests/cases/compiler/requiredMappedTypeModifierTrumpsVariance.ts(22,6): error TS2339: Property 'a' does not exist on type 'Required<{ b?: 1; x: 1; }>'.
+
+
+==== tests/cases/compiler/requiredMappedTypeModifierTrumpsVariance.ts (8 errors) ====
+    const a: Required<{ a?: 1; x: 1 }> = { a: 1, x: 1 };
+    const b: Required<{ b?: 1; x: 1 }> = { b: 1, x: 1 };
+    export let A = a;
+    export let B = b;
+    A = b; // Should Error
+    ~
+!!! error TS2741: Property 'a' is missing in type 'Required<{ b?: 1; x: 1; }>' but required in type 'Required<{ a?: 1; x: 1; }>'.
+!!! related TS2728 tests/cases/compiler/requiredMappedTypeModifierTrumpsVariance.ts:1:21: 'a' is declared here.
+    B = a; // Should Error
+    ~
+!!! error TS2741: Property 'b' is missing in type 'Required<{ a?: 1; x: 1; }>' but required in type 'Required<{ b?: 1; x: 1; }>'.
+!!! related TS2728 tests/cases/compiler/requiredMappedTypeModifierTrumpsVariance.ts:2:21: 'b' is declared here.
+    
+    a.b; // Property 'b' does not exist on type 'Required<{ a?: 1; x: 1; }>'.
+      ~
+!!! error TS2339: Property 'b' does not exist on type 'Required<{ a?: 1; x: 1; }>'.
+    b.a; // Property 'a' does not exist on type 'Required<{ b?: 1; x: 1; }>'.
+      ~
+!!! error TS2339: Property 'a' does not exist on type 'Required<{ b?: 1; x: 1; }>'.
+    
+    interface Foo<T> {
+        a: Required<T>;
+    }
+    const aa: Foo<{ a?: 1; x: 1 }> = { a: { a: 1, x: 1 } };
+    const bb: Foo<{ b?: 1; x: 1 }> = { a: { b: 1, x: 1 } };
+    export let AA = aa;
+    export let BB = bb;
+    AA = bb; // Should Error
+    ~~
+!!! error TS2322: Type 'Foo<{ b?: 1; x: 1; }>' is not assignable to type 'Foo<{ a?: 1; x: 1; }>'.
+!!! error TS2322:   Types of property 'a' are incompatible.
+!!! error TS2322:     Property 'a' is missing in type 'Required<{ b?: 1; x: 1; }>' but required in type 'Required<{ a?: 1; x: 1; }>'.
+!!! related TS2728 tests/cases/compiler/requiredMappedTypeModifierTrumpsVariance.ts:14:17: 'a' is declared here.
+    BB = aa; // Should Error
+    ~~
+!!! error TS2322: Type 'Foo<{ a?: 1; x: 1; }>' is not assignable to type 'Foo<{ b?: 1; x: 1; }>'.
+!!! error TS2322:   Types of property 'a' are incompatible.
+!!! error TS2322:     Property 'b' is missing in type 'Required<{ a?: 1; x: 1; }>' but required in type 'Required<{ b?: 1; x: 1; }>'.
+!!! related TS2728 tests/cases/compiler/requiredMappedTypeModifierTrumpsVariance.ts:15:17: 'b' is declared here.
+    
+    aa.a.b; // Property 'b' does not exist on type 'Required<{ a?: 1; x: 1; }>'.
+         ~
+!!! error TS2339: Property 'b' does not exist on type 'Required<{ a?: 1; x: 1; }>'.
+    bb.a.a; // Property 'a' does not exist on type 'Required<{ b?: 1; x: 1; }>'.
+         ~
+!!! error TS2339: Property 'a' does not exist on type 'Required<{ b?: 1; x: 1; }>'.

tests/baselines/reference/requiredMappedTypeModifierTrumpsVariance.js

@@ -0,0 +1,43 @@
+//// [requiredMappedTypeModifierTrumpsVariance.ts]
+const a: Required<{ a?: 1; x: 1 }> = { a: 1, x: 1 };
+const b: Required<{ b?: 1; x: 1 }> = { b: 1, x: 1 };
+export let A = a;
+export let B = b;
+A = b; // Should Error
+B = a; // Should Error
+
+a.b; // Property 'b' does not exist on type 'Required<{ a?: 1; x: 1; }>'.
+b.a; // Property 'a' does not exist on type 'Required<{ b?: 1; x: 1; }>'.
+
+interface Foo<T> {
+    a: Required<T>;
+}
+const aa: Foo<{ a?: 1; x: 1 }> = { a: { a: 1, x: 1 } };
+const bb: Foo<{ b?: 1; x: 1 }> = { a: { b: 1, x: 1 } };
+export let AA = aa;
+export let BB = bb;
+AA = bb; // Should Error
+BB = aa; // Should Error
+
+aa.a.b; // Property 'b' does not exist on type 'Required<{ a?: 1; x: 1; }>'.
+bb.a.a; // Property 'a' does not exist on type 'Required<{ b?: 1; x: 1; }>'.
+
+//// [requiredMappedTypeModifierTrumpsVariance.js]
+"use strict";
+exports.__esModule = true;
+var a = { a: 1, x: 1 };
+var b = { b: 1, x: 1 };
+exports.A = a;
+exports.B = b;
+exports.A = b; // Should Error
+exports.B = a; // Should Error
+a.b; // Property 'b' does not exist on type 'Required<{ a?: 1; x: 1; }>'.
+b.a; // Property 'a' does not exist on type 'Required<{ b?: 1; x: 1; }>'.
+var aa = { a: { a: 1, x: 1 } };
+var bb = { a: { b: 1, x: 1 } };
+exports.AA = aa;
+exports.BB = bb;
+exports.AA = bb; // Should Error
+exports.BB = aa; // Should Error
+aa.a.b; // Property 'b' does not exist on type 'Required<{ a?: 1; x: 1; }>'.
+bb.a.a; // Property 'a' does not exist on type 'Required<{ b?: 1; x: 1; }>'.

tests/baselines/reference/requiredMappedTypeModifierTrumpsVariance.symbols

@@ -0,0 +1,92 @@
+=== tests/cases/compiler/requiredMappedTypeModifierTrumpsVariance.ts ===
+const a: Required<{ a?: 1; x: 1 }> = { a: 1, x: 1 };
+>a : Symbol(a, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 0, 5))
+>Required : Symbol(Required, Decl(lib.es5.d.ts, --, --))
+>a : Symbol(a, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 0, 19))
+>x : Symbol(x, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 0, 26))
+>a : Symbol(a, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 0, 38))
+>x : Symbol(x, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 0, 44))
+
+const b: Required<{ b?: 1; x: 1 }> = { b: 1, x: 1 };
+>b : Symbol(b, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 1, 5))
+>Required : Symbol(Required, Decl(lib.es5.d.ts, --, --))
+>b : Symbol(b, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 1, 19))
+>x : Symbol(x, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 1, 26))
+>b : Symbol(b, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 1, 38))
+>x : Symbol(x, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 1, 44))
+
+export let A = a;
+>A : Symbol(A, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 2, 10))
+>a : Symbol(a, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 0, 5))
+
+export let B = b;
+>B : Symbol(B, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 3, 10))
+>b : Symbol(b, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 1, 5))
+
+A = b; // Should Error
+>A : Symbol(A, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 2, 10))
+>b : Symbol(b, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 1, 5))
+
+B = a; // Should Error
+>B : Symbol(B, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 3, 10))
+>a : Symbol(a, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 0, 5))
+
+a.b; // Property 'b' does not exist on type 'Required<{ a?: 1; x: 1; }>'.
+>a : Symbol(a, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 0, 5))
+
+b.a; // Property 'a' does not exist on type 'Required<{ b?: 1; x: 1; }>'.
+>b : Symbol(b, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 1, 5))
+
+interface Foo<T> {
+>Foo : Symbol(Foo, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 8, 4))
+>T : Symbol(T, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 10, 14))
+
+    a: Required<T>;
+>a : Symbol(Foo.a, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 10, 18))
+>Required : Symbol(Required, Decl(lib.es5.d.ts, --, --))
+>T : Symbol(T, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 10, 14))
+}
+const aa: Foo<{ a?: 1; x: 1 }> = { a: { a: 1, x: 1 } };
+>aa : Symbol(aa, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 13, 5))
+>Foo : Symbol(Foo, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 8, 4))
+>a : Symbol(a, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 13, 15))
+>x : Symbol(x, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 13, 22))
+>a : Symbol(a, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 13, 34))
+>a : Symbol(a, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 13, 39))
+>x : Symbol(x, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 13, 45))
+
+const bb: Foo<{ b?: 1; x: 1 }> = { a: { b: 1, x: 1 } };
+>bb : Symbol(bb, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 14, 5))
+>Foo : Symbol(Foo, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 8, 4))
+>b : Symbol(b, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 14, 15))
+>x : Symbol(x, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 14, 22))
+>a : Symbol(a, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 14, 34))
+>b : Symbol(b, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 14, 39))
+>x : Symbol(x, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 14, 45))
+
+export let AA = aa;
+>AA : Symbol(AA, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 15, 10))
+>aa : Symbol(aa, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 13, 5))
+
+export let BB = bb;
+>BB : Symbol(BB, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 16, 10))
+>bb : Symbol(bb, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 14, 5))
+
+AA = bb; // Should Error
+>AA : Symbol(AA, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 15, 10))
+>bb : Symbol(bb, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 14, 5))
+
+BB = aa; // Should Error
+>BB : Symbol(BB, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 16, 10))
+>aa : Symbol(aa, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 13, 5))
+
+aa.a.b; // Property 'b' does not exist on type 'Required<{ a?: 1; x: 1; }>'.
+>aa.a : Symbol(Foo.a, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 10, 18))
+>aa : Symbol(aa, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 13, 5))
+>a : Symbol(Foo.a, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 10, 18))
+
+bb.a.a; // Property 'a' does not exist on type 'Required<{ b?: 1; x: 1; }>'.
+>bb.a : Symbol(Foo.a, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 10, 18))
+>bb : Symbol(bb, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 14, 5))
+>a : Symbol(Foo.a, Decl(requiredMappedTypeModifierTrumpsVariance.ts, 10, 18))
+

tests/baselines/reference/requiredMappedTypeModifierTrumpsVariance.types

@@ -0,0 +1,109 @@
+=== tests/cases/compiler/requiredMappedTypeModifierTrumpsVariance.ts ===
+const a: Required<{ a?: 1; x: 1 }> = { a: 1, x: 1 };
+>a : Required<{ a?: 1; x: 1; }>
+>a : 1
+>x : 1
+>{ a: 1, x: 1 } : { a: 1; x: 1; }
+>a : 1
+>1 : 1
+>x : 1
+>1 : 1
+
+const b: Required<{ b?: 1; x: 1 }> = { b: 1, x: 1 };
+>b : Required<{ b?: 1; x: 1; }>
+>b : 1
+>x : 1
+>{ b: 1, x: 1 } : { b: 1; x: 1; }
+>b : 1
+>1 : 1
+>x : 1
+>1 : 1
+
+export let A = a;
+>A : Required<{ a?: 1; x: 1; }>
+>a : Required<{ a?: 1; x: 1; }>
+
+export let B = b;
+>B : Required<{ b?: 1; x: 1; }>
+>b : Required<{ b?: 1; x: 1; }>
+
+A = b; // Should Error
+>A = b : Required<{ b?: 1; x: 1; }>
+>A : Required<{ a?: 1; x: 1; }>
+>b : Required<{ b?: 1; x: 1; }>
+
+B = a; // Should Error
+>B = a : Required<{ a?: 1; x: 1; }>
+>B : Required<{ b?: 1; x: 1; }>
+>a : Required<{ a?: 1; x: 1; }>
+
+a.b; // Property 'b' does not exist on type 'Required<{ a?: 1; x: 1; }>'.
+>a.b : any
+>a : Required<{ a?: 1; x: 1; }>
+>b : any
+
+b.a; // Property 'a' does not exist on type 'Required<{ b?: 1; x: 1; }>'.
+>b.a : any
+>b : Required<{ b?: 1; x: 1; }>
+>a : any
+
+interface Foo<T> {
+    a: Required<T>;
+>a : Required<T>
+}
+const aa: Foo<{ a?: 1; x: 1 }> = { a: { a: 1, x: 1 } };
+>aa : Foo<{ a?: 1; x: 1; }>
+>a : 1
+>x : 1
+>{ a: { a: 1, x: 1 } } : { a: { a: 1; x: 1; }; }
+>a : { a: 1; x: 1; }
+>{ a: 1, x: 1 } : { a: 1; x: 1; }
+>a : 1
+>1 : 1
+>x : 1
+>1 : 1
+
+const bb: Foo<{ b?: 1; x: 1 }> = { a: { b: 1, x: 1 } };
+>bb : Foo<{ b?: 1; x: 1; }>
+>b : 1
+>x : 1
+>{ a: { b: 1, x: 1 } } : { a: { b: 1; x: 1; }; }
+>a : { b: 1; x: 1; }
+>{ b: 1, x: 1 } : { b: 1; x: 1; }
+>b : 1
+>1 : 1
+>x : 1
+>1 : 1
+
+export let AA = aa;
+>AA : Foo<{ a?: 1; x: 1; }>
+>aa : Foo<{ a?: 1; x: 1; }>
+
+export let BB = bb;
+>BB : Foo<{ b?: 1; x: 1; }>
+>bb : Foo<{ b?: 1; x: 1; }>
+
+AA = bb; // Should Error
+>AA = bb : Foo<{ b?: 1; x: 1; }>
+>AA : Foo<{ a?: 1; x: 1; }>
+>bb : Foo<{ b?: 1; x: 1; }>
+
+BB = aa; // Should Error
+>BB = aa : Foo<{ a?: 1; x: 1; }>
+>BB : Foo<{ b?: 1; x: 1; }>
+>aa : Foo<{ a?: 1; x: 1; }>
+
+aa.a.b; // Property 'b' does not exist on type 'Required<{ a?: 1; x: 1; }>'.
+>aa.a.b : any
+>aa.a : Required<{ a?: 1; x: 1; }>
+>aa : Foo<{ a?: 1; x: 1; }>
+>a : Required<{ a?: 1; x: 1; }>
+>b : any
+
+bb.a.a; // Property 'a' does not exist on type 'Required<{ b?: 1; x: 1; }>'.
+>bb.a.a : any
+>bb.a : Required<{ b?: 1; x: 1; }>
+>bb : Foo<{ b?: 1; x: 1; }>
+>a : Required<{ b?: 1; x: 1; }>
+>a : any
+

tests/baselines/reference/restIntersection.js

@@ -11,8 +11,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var intersection;

tests/baselines/reference/restInvalidArgumentType.js

@@ -61,8 +61,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var E;

tests/baselines/reference/restParameterWithBindingPattern3.js

@@ -15,8 +15,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 function a() {

tests/baselines/reference/restPropertyWithBindingPattern.js

@@ -10,8 +10,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var _a, _b;

tests/baselines/reference/restUnion.js

@@ -21,8 +21,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var union;

tests/baselines/reference/restUnion2.js

@@ -15,8 +15,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var rest2;

tests/baselines/reference/restUnion3.js

@@ -15,8 +15,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var rest4;

tests/baselines/reference/strictFunctionTypesErrors.errors.txt

@@ -62,9 +62,13 @@ tests/cases/compiler/strictFunctionTypesErrors.ts(84,1): error TS2322: Type 'Fun
 tests/cases/compiler/strictFunctionTypesErrors.ts(111,1): error TS2322: Type 'Comparer2<Dog>' is not assignable to type 'Comparer2<Animal>'.
   Property 'dog' is missing in type 'Animal' but required in type 'Dog'.
 tests/cases/compiler/strictFunctionTypesErrors.ts(126,1): error TS2322: Type 'Crate<Dog>' is not assignable to type 'Crate<Animal>'.
-  Type 'Animal' is not assignable to type 'Dog'.
+  Types of property 'onSetItem' are incompatible.
+    Type '(item: Dog) => void' is not assignable to type '(item: Animal) => void'.
+      Types of parameters 'item' and 'item' are incompatible.
+        Type 'Animal' is not assignable to type 'Dog'.
 tests/cases/compiler/strictFunctionTypesErrors.ts(127,1): error TS2322: Type 'Crate<Animal>' is not assignable to type 'Crate<Dog>'.
-  Type 'Animal' is not assignable to type 'Dog'.
+  Types of property 'item' are incompatible.
+    Type 'Animal' is not assignable to type 'Dog'.
 tests/cases/compiler/strictFunctionTypesErrors.ts(133,1): error TS2322: Type '(f: (x: Dog) => Dog) => void' is not assignable to type '(f: (x: Animal) => Animal) => void'.
   Types of parameters 'f' and 'f' are incompatible.
     Type 'Animal' is not assignable to type 'Dog'.
@@ -304,11 +308,15 @@ tests/cases/compiler/strictFunctionTypesErrors.ts(155,5): error TS2322: Type '(c
     animalCrate = dogCrate;  // Error
     ~~~~~~~~~~~
 !!! error TS2322: Type 'Crate<Dog>' is not assignable to type 'Crate<Animal>'.
-!!! error TS2322:   Type 'Animal' is not assignable to type 'Dog'.
+!!! error TS2322:   Types of property 'onSetItem' are incompatible.
+!!! error TS2322:     Type '(item: Dog) => void' is not assignable to type '(item: Animal) => void'.
+!!! error TS2322:       Types of parameters 'item' and 'item' are incompatible.
+!!! error TS2322:         Type 'Animal' is not assignable to type 'Dog'.
     dogCrate = animalCrate;  // Error
     ~~~~~~~~
 !!! error TS2322: Type 'Crate<Animal>' is not assignable to type 'Crate<Dog>'.
-!!! error TS2322:   Type 'Animal' is not assignable to type 'Dog'.
+!!! error TS2322:   Types of property 'item' are incompatible.
+!!! error TS2322:     Type 'Animal' is not assignable to type 'Dog'.
     
     // Verify that callback parameters are strictly checked
     

tests/baselines/reference/substitutionTypesInIndexedAccessTypes.js

@@ -0,0 +1,30 @@
+//// [substitutionTypesInIndexedAccessTypes.ts]
+// Repro from #31086
+
+type UserArgs = {
+  select?: boolean
+};
+
+type Subset<T, U> = { [key in keyof T]: key extends keyof U ? T[key] : never };
+
+declare function withBoundary<T extends UserArgs>(args?: Subset<T, UserArgs>): T;
+declare function withoutBoundary<T extends UserArgs>(args?: T): T;
+
+const boundaryResult = withBoundary({
+  select: true,
+});
+
+const withoutBoundaryResult = withoutBoundary({
+  select: true,
+});
+
+
+//// [substitutionTypesInIndexedAccessTypes.js]
+"use strict";
+// Repro from #31086
+var boundaryResult = withBoundary({
+    select: true
+});
+var withoutBoundaryResult = withoutBoundary({
+    select: true
+});

tests/baselines/reference/substitutionTypesInIndexedAccessTypes.symbols

@@ -0,0 +1,58 @@
+=== tests/cases/compiler/substitutionTypesInIndexedAccessTypes.ts ===
+// Repro from #31086
+
+type UserArgs = {
+>UserArgs : Symbol(UserArgs, Decl(substitutionTypesInIndexedAccessTypes.ts, 0, 0))
+
+  select?: boolean
+>select : Symbol(select, Decl(substitutionTypesInIndexedAccessTypes.ts, 2, 17))
+
+};
+
+type Subset<T, U> = { [key in keyof T]: key extends keyof U ? T[key] : never };
+>Subset : Symbol(Subset, Decl(substitutionTypesInIndexedAccessTypes.ts, 4, 2))
+>T : Symbol(T, Decl(substitutionTypesInIndexedAccessTypes.ts, 6, 12))
+>U : Symbol(U, Decl(substitutionTypesInIndexedAccessTypes.ts, 6, 14))
+>key : Symbol(key, Decl(substitutionTypesInIndexedAccessTypes.ts, 6, 23))
+>T : Symbol(T, Decl(substitutionTypesInIndexedAccessTypes.ts, 6, 12))
+>key : Symbol(key, Decl(substitutionTypesInIndexedAccessTypes.ts, 6, 23))
+>U : Symbol(U, Decl(substitutionTypesInIndexedAccessTypes.ts, 6, 14))
+>T : Symbol(T, Decl(substitutionTypesInIndexedAccessTypes.ts, 6, 12))
+>key : Symbol(key, Decl(substitutionTypesInIndexedAccessTypes.ts, 6, 23))
+
+declare function withBoundary<T extends UserArgs>(args?: Subset<T, UserArgs>): T;
+>withBoundary : Symbol(withBoundary, Decl(substitutionTypesInIndexedAccessTypes.ts, 6, 79))
+>T : Symbol(T, Decl(substitutionTypesInIndexedAccessTypes.ts, 8, 30))
+>UserArgs : Symbol(UserArgs, Decl(substitutionTypesInIndexedAccessTypes.ts, 0, 0))
+>args : Symbol(args, Decl(substitutionTypesInIndexedAccessTypes.ts, 8, 50))
+>Subset : Symbol(Subset, Decl(substitutionTypesInIndexedAccessTypes.ts, 4, 2))
+>T : Symbol(T, Decl(substitutionTypesInIndexedAccessTypes.ts, 8, 30))
+>UserArgs : Symbol(UserArgs, Decl(substitutionTypesInIndexedAccessTypes.ts, 0, 0))
+>T : Symbol(T, Decl(substitutionTypesInIndexedAccessTypes.ts, 8, 30))
+
+declare function withoutBoundary<T extends UserArgs>(args?: T): T;
+>withoutBoundary : Symbol(withoutBoundary, Decl(substitutionTypesInIndexedAccessTypes.ts, 8, 81))
+>T : Symbol(T, Decl(substitutionTypesInIndexedAccessTypes.ts, 9, 33))
+>UserArgs : Symbol(UserArgs, Decl(substitutionTypesInIndexedAccessTypes.ts, 0, 0))
+>args : Symbol(args, Decl(substitutionTypesInIndexedAccessTypes.ts, 9, 53))
+>T : Symbol(T, Decl(substitutionTypesInIndexedAccessTypes.ts, 9, 33))
+>T : Symbol(T, Decl(substitutionTypesInIndexedAccessTypes.ts, 9, 33))
+
+const boundaryResult = withBoundary({
+>boundaryResult : Symbol(boundaryResult, Decl(substitutionTypesInIndexedAccessTypes.ts, 11, 5))
+>withBoundary : Symbol(withBoundary, Decl(substitutionTypesInIndexedAccessTypes.ts, 6, 79))
+
+  select: true,
+>select : Symbol(select, Decl(substitutionTypesInIndexedAccessTypes.ts, 11, 37))
+
+});
+
+const withoutBoundaryResult = withoutBoundary({
+>withoutBoundaryResult : Symbol(withoutBoundaryResult, Decl(substitutionTypesInIndexedAccessTypes.ts, 15, 5))
+>withoutBoundary : Symbol(withoutBoundary, Decl(substitutionTypesInIndexedAccessTypes.ts, 8, 81))
+
+  select: true,
+>select : Symbol(select, Decl(substitutionTypesInIndexedAccessTypes.ts, 15, 47))
+
+});
+

tests/baselines/reference/substitutionTypesInIndexedAccessTypes.types

@@ -0,0 +1,46 @@
+=== tests/cases/compiler/substitutionTypesInIndexedAccessTypes.ts ===
+// Repro from #31086
+
+type UserArgs = {
+>UserArgs : UserArgs
+
+  select?: boolean
+>select : boolean | undefined
+
+};
+
+type Subset<T, U> = { [key in keyof T]: key extends keyof U ? T[key] : never };
+>Subset : Subset<T, U>
+
+declare function withBoundary<T extends UserArgs>(args?: Subset<T, UserArgs>): T;
+>withBoundary : <T extends UserArgs>(args?: Subset<T, UserArgs> | undefined) => T
+>args : Subset<T, UserArgs> | undefined
+
+declare function withoutBoundary<T extends UserArgs>(args?: T): T;
+>withoutBoundary : <T extends UserArgs>(args?: T | undefined) => T
+>args : T | undefined
+
+const boundaryResult = withBoundary({
+>boundaryResult : { select: true; }
+>withBoundary({  select: true,}) : { select: true; }
+>withBoundary : <T extends UserArgs>(args?: Subset<T, UserArgs> | undefined) => T
+>{  select: true,} : { select: true; }
+
+  select: true,
+>select : true
+>true : true
+
+});
+
+const withoutBoundaryResult = withoutBoundary({
+>withoutBoundaryResult : { select: true; }
+>withoutBoundary({  select: true,}) : { select: true; }
+>withoutBoundary : <T extends UserArgs>(args?: T | undefined) => T
+>{  select: true,} : { select: true; }
+
+  select: true,
+>select : true
+>true : true
+
+});
+

tests/baselines/reference/thisConditionalOnMethodReturnOfGenericInstance.js

@@ -0,0 +1,59 @@
+//// [thisConditionalOnMethodReturnOfGenericInstance.ts]
+class A<T> {
+    unmeasurableUsage!: {[K in keyof T]-?: T[K]};
+}
+
+class B<T> extends A<T> {
+    method(): string | (this extends C ? undefined : null) {
+        return "";
+    }
+}
+
+class C<T = any> extends B<T> {
+    marker!: string;
+}
+
+const x = new C<{}>();
+
+const y = x.method(); // usage flags `method` in `B` as circular and marks `y` as the error-any type
+
+
+//// [thisConditionalOnMethodReturnOfGenericInstance.js]
+"use strict";
+var __extends = (this && this.__extends) || (function () {
+    var extendStatics = function (d, b) {
+        extendStatics = Object.setPrototypeOf ||
+            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
+        return extendStatics(d, b);
+    };
+    return function (d, b) {
+        extendStatics(d, b);
+        function __() { this.constructor = d; }
+        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+    };
+})();
+var A = /** @class */ (function () {
+    function A() {
+    }
+    return A;
+}());
+var B = /** @class */ (function (_super) {
+    __extends(B, _super);
+    function B() {
+        return _super !== null && _super.apply(this, arguments) || this;
+    }
+    B.prototype.method = function () {
+        return "";
+    };
+    return B;
+}(A));
+var C = /** @class */ (function (_super) {
+    __extends(C, _super);
+    function C() {
+        return _super !== null && _super.apply(this, arguments) || this;
+    }
+    return C;
+}(B));
+var x = new C();
+var y = x.method(); // usage flags `method` in `B` as circular and marks `y` as the error-any type

tests/baselines/reference/thisConditionalOnMethodReturnOfGenericInstance.symbols

@@ -0,0 +1,47 @@
+=== tests/cases/compiler/thisConditionalOnMethodReturnOfGenericInstance.ts ===
+class A<T> {
+>A : Symbol(A, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 0, 0))
+>T : Symbol(T, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 0, 8))
+
+    unmeasurableUsage!: {[K in keyof T]-?: T[K]};
+>unmeasurableUsage : Symbol(A.unmeasurableUsage, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 0, 12))
+>K : Symbol(K, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 1, 26))
+>T : Symbol(T, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 0, 8))
+>T : Symbol(T, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 0, 8))
+>K : Symbol(K, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 1, 26))
+}
+
+class B<T> extends A<T> {
+>B : Symbol(B, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 2, 1))
+>T : Symbol(T, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 4, 8))
+>A : Symbol(A, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 0, 0))
+>T : Symbol(T, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 4, 8))
+
+    method(): string | (this extends C ? undefined : null) {
+>method : Symbol(B.method, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 4, 25))
+>C : Symbol(C, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 8, 1))
+
+        return "";
+    }
+}
+
+class C<T = any> extends B<T> {
+>C : Symbol(C, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 8, 1))
+>T : Symbol(T, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 10, 8))
+>B : Symbol(B, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 2, 1))
+>T : Symbol(T, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 10, 8))
+
+    marker!: string;
+>marker : Symbol(C.marker, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 10, 31))
+}
+
+const x = new C<{}>();
+>x : Symbol(x, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 14, 5))
+>C : Symbol(C, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 8, 1))
+
+const y = x.method(); // usage flags `method` in `B` as circular and marks `y` as the error-any type
+>y : Symbol(y, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 16, 5))
+>x.method : Symbol(B.method, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 4, 25))
+>x : Symbol(x, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 14, 5))
+>method : Symbol(B.method, Decl(thisConditionalOnMethodReturnOfGenericInstance.ts, 4, 25))
+

tests/baselines/reference/thisConditionalOnMethodReturnOfGenericInstance.types

@@ -0,0 +1,41 @@
+=== tests/cases/compiler/thisConditionalOnMethodReturnOfGenericInstance.ts ===
+class A<T> {
+>A : A<T>
+
+    unmeasurableUsage!: {[K in keyof T]-?: T[K]};
+>unmeasurableUsage : { [K in keyof T]-?: T[K]; }
+}
+
+class B<T> extends A<T> {
+>B : B<T>
+>A : A<T>
+
+    method(): string | (this extends C ? undefined : null) {
+>method : () => string | (this extends C<any> ? undefined : null)
+>null : null
+
+        return "";
+>"" : ""
+    }
+}
+
+class C<T = any> extends B<T> {
+>C : C<T>
+>B : B<T>
+
+    marker!: string;
+>marker : string
+}
+
+const x = new C<{}>();
+>x : C<{}>
+>new C<{}>() : C<{}>
+>C : typeof C
+
+const y = x.method(); // usage flags `method` in `B` as circular and marks `y` as the error-any type
+>y : string | undefined
+>x.method() : string | undefined
+>x.method : () => string | undefined
+>x : C<{}>
+>method : () => string | undefined
+

tests/baselines/reference/trailingCommasInBindingPatterns.js

@@ -19,8 +19,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var a = [].slice(0);

tests/baselines/reference/tsbuild/amdModulesWithOut/incremental-declaration-doesnt-change/multiple-emitHelpers-in-all-projects.js

@@ -24,8 +24,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var myGlob = 20;
@@ -70,7 +72,7 @@ appfile4Spread.apply(void 0, __spread([10, 20, 30]));
 //# sourceMappingURL=module.js.map
 
 //// [/src/app/module.js.map]
-{"version":3,"file":"module.js","sourceRoot":"","sources":["../lib/file0.ts","../lib/file1.ts","../lib/file2.ts","../lib/global.ts","file3.ts","file4.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,IAAM,MAAM,GAAG,EAAE,CAAC;AAClB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE;;;;ICFnB,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,SAAS,eAAe;QAC5C,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;IAChD,CAAC;IAAA,OAAO,CAAC,GAAG,CAAC,SAAC,CAAC,CAAC;;;;;ICFH,QAAA,CAAC,GAAG,EAAE,CAAC;;ACApB,IAAM,WAAW,GAAG,EAAE,CAAC;;;;ICAV,QAAA,CAAC,GAAG,EAAE,CAAC;IACM,SAAS,eAAe;QAClD,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;IAChD,CAAC;;ACHD,IAAM,KAAK,GAAG,EAAE,CAAC;AACjB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE"}
+{"version":3,"file":"module.js","sourceRoot":"","sources":["../lib/file0.ts","../lib/file1.ts","../lib/file2.ts","../lib/global.ts","file3.ts","file4.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,IAAM,MAAM,GAAG,EAAE,CAAC;AAClB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE;;;;ICFnB,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,SAAS,eAAe;QAC5C,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;IAChD,CAAC;IAAA,OAAO,CAAC,GAAG,CAAC,SAAC,CAAC,CAAC;;;;;ICFH,QAAA,CAAC,GAAG,EAAE,CAAC;;ACApB,IAAM,WAAW,GAAG,EAAE,CAAC;;;;ICAV,QAAA,CAAC,GAAG,EAAE,CAAC;IACM,SAAS,eAAe;QAClD,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;IAChD,CAAC;;ACHD,IAAM,KAAK,GAAG,EAAE,CAAC;AACjB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE"}
 
 //// [/src/app/module.js.map.baseline.txt]
 ===================================================================
@@ -108,8 +110,10 @@ sourceFile:../lib/file0.ts
 >>>    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
 >>>        t[p] = s[p];
 >>>    if (s != null && typeof Object.getOwnPropertySymbols === "function")
->>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
->>>            t[p[i]] = s[p[i]];
+>>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+>>>            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+>>>                t[p[i]] = s[p[i]];
+>>>        }
 >>>    return t;
 >>>};
 >>>var myGlob = 20;
@@ -126,12 +130,12 @@ sourceFile:../lib/file0.ts
 4 >           = 
 5 >             20
 6 >               ;
-1 >Emitted(30, 1) Source(1, 1) + SourceIndex(0)
-2 >Emitted(30, 5) Source(1, 7) + SourceIndex(0)
-3 >Emitted(30, 11) Source(1, 13) + SourceIndex(0)
-4 >Emitted(30, 14) Source(1, 16) + SourceIndex(0)
-5 >Emitted(30, 16) Source(1, 18) + SourceIndex(0)
-6 >Emitted(30, 17) Source(1, 19) + SourceIndex(0)
+1 >Emitted(32, 1) Source(1, 1) + SourceIndex(0)
+2 >Emitted(32, 5) Source(1, 7) + SourceIndex(0)
+3 >Emitted(32, 11) Source(1, 13) + SourceIndex(0)
+4 >Emitted(32, 14) Source(1, 16) + SourceIndex(0)
+5 >Emitted(32, 16) Source(1, 18) + SourceIndex(0)
+6 >Emitted(32, 17) Source(1, 19) + SourceIndex(0)
 ---
 >>>function libfile0Spread() {
 1->
@@ -141,9 +145,9 @@ sourceFile:../lib/file0.ts
   >
 2 >function 
 3 >         libfile0Spread
-1->Emitted(31, 1) Source(2, 1) + SourceIndex(0)
-2 >Emitted(31, 10) Source(2, 10) + SourceIndex(0)
-3 >Emitted(31, 24) Source(2, 24) + SourceIndex(0)
+1->Emitted(33, 1) Source(2, 1) + SourceIndex(0)
+2 >Emitted(33, 10) Source(2, 10) + SourceIndex(0)
+3 >Emitted(33, 24) Source(2, 24) + SourceIndex(0)
 ---
 >>>    var b = [];
 1 >^^^^
@@ -151,8 +155,8 @@ sourceFile:../lib/file0.ts
 3 >               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >(
 2 >    ...b: number[]
-1 >Emitted(32, 5) Source(2, 25) + SourceIndex(0)
-2 >Emitted(32, 16) Source(2, 39) + SourceIndex(0)
+1 >Emitted(34, 5) Source(2, 25) + SourceIndex(0)
+2 >Emitted(34, 16) Source(2, 39) + SourceIndex(0)
 ---
 >>>    for (var _i = 0; _i < arguments.length; _i++) {
 1->^^^^^^^^^
@@ -167,20 +171,20 @@ sourceFile:../lib/file0.ts
 4 >                     ...b: number[]
 5 >                                          
 6 >                                            ...b: number[]
-1->Emitted(33, 10) Source(2, 25) + SourceIndex(0)
-2 >Emitted(33, 20) Source(2, 39) + SourceIndex(0)
-3 >Emitted(33, 22) Source(2, 25) + SourceIndex(0)
-4 >Emitted(33, 43) Source(2, 39) + SourceIndex(0)
-5 >Emitted(33, 45) Source(2, 25) + SourceIndex(0)
-6 >Emitted(33, 49) Source(2, 39) + SourceIndex(0)
+1->Emitted(35, 10) Source(2, 25) + SourceIndex(0)
+2 >Emitted(35, 20) Source(2, 39) + SourceIndex(0)
+3 >Emitted(35, 22) Source(2, 25) + SourceIndex(0)
+4 >Emitted(35, 43) Source(2, 39) + SourceIndex(0)
+5 >Emitted(35, 45) Source(2, 25) + SourceIndex(0)
+6 >Emitted(35, 49) Source(2, 39) + SourceIndex(0)
 ---
 >>>        b[_i] = arguments[_i];
 1 >^^^^^^^^
 2 >        ^^^^^^^^^^^^^^^^^^^^^^
 1 >
 2 >        ...b: number[]
-1 >Emitted(34, 9) Source(2, 25) + SourceIndex(0)
-2 >Emitted(34, 31) Source(2, 39) + SourceIndex(0)
+1 >Emitted(36, 9) Source(2, 25) + SourceIndex(0)
+2 >Emitted(36, 31) Source(2, 39) + SourceIndex(0)
 ---
 >>>    }
 >>>}
@@ -189,8 +193,8 @@ sourceFile:../lib/file0.ts
 3 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >) { 
 2 >}
-1 >Emitted(36, 1) Source(2, 43) + SourceIndex(0)
-2 >Emitted(36, 2) Source(2, 44) + SourceIndex(0)
+1 >Emitted(38, 1) Source(2, 43) + SourceIndex(0)
+2 >Emitted(38, 2) Source(2, 44) + SourceIndex(0)
 ---
 >>>libfile0Spread.apply(void 0, __spread([10, 20, 30]));
 1->
@@ -217,17 +221,17 @@ sourceFile:../lib/file0.ts
 9 >                                               30
 10>                                                 ]
 11>                                                  );
-1->Emitted(37, 1) Source(3, 1) + SourceIndex(0)
-2 >Emitted(37, 15) Source(3, 15) + SourceIndex(0)
-3 >Emitted(37, 39) Source(3, 19) + SourceIndex(0)
-4 >Emitted(37, 40) Source(3, 20) + SourceIndex(0)
-5 >Emitted(37, 42) Source(3, 22) + SourceIndex(0)
-6 >Emitted(37, 44) Source(3, 24) + SourceIndex(0)
-7 >Emitted(37, 46) Source(3, 26) + SourceIndex(0)
-8 >Emitted(37, 48) Source(3, 28) + SourceIndex(0)
-9 >Emitted(37, 50) Source(3, 30) + SourceIndex(0)
-10>Emitted(37, 51) Source(3, 31) + SourceIndex(0)
-11>Emitted(37, 54) Source(3, 33) + SourceIndex(0)
+1->Emitted(39, 1) Source(3, 1) + SourceIndex(0)
+2 >Emitted(39, 15) Source(3, 15) + SourceIndex(0)
+3 >Emitted(39, 39) Source(3, 19) + SourceIndex(0)
+4 >Emitted(39, 40) Source(3, 20) + SourceIndex(0)
+5 >Emitted(39, 42) Source(3, 22) + SourceIndex(0)
+6 >Emitted(39, 44) Source(3, 24) + SourceIndex(0)
+7 >Emitted(39, 46) Source(3, 26) + SourceIndex(0)
+8 >Emitted(39, 48) Source(3, 28) + SourceIndex(0)
+9 >Emitted(39, 50) Source(3, 30) + SourceIndex(0)
+10>Emitted(39, 51) Source(3, 31) + SourceIndex(0)
+11>Emitted(39, 54) Source(3, 33) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/app/module.js
@@ -250,12 +254,12 @@ sourceFile:../lib/file1.ts
 4 >              = 
 5 >                10
 6 >                  ;
-1->Emitted(41, 5) Source(1, 14) + SourceIndex(1)
-2 >Emitted(41, 13) Source(1, 14) + SourceIndex(1)
-3 >Emitted(41, 14) Source(1, 15) + SourceIndex(1)
-4 >Emitted(41, 17) Source(1, 18) + SourceIndex(1)
-5 >Emitted(41, 19) Source(1, 20) + SourceIndex(1)
-6 >Emitted(41, 20) Source(1, 21) + SourceIndex(1)
+1->Emitted(43, 5) Source(1, 14) + SourceIndex(1)
+2 >Emitted(43, 13) Source(1, 14) + SourceIndex(1)
+3 >Emitted(43, 14) Source(1, 15) + SourceIndex(1)
+4 >Emitted(43, 17) Source(1, 18) + SourceIndex(1)
+5 >Emitted(43, 19) Source(1, 20) + SourceIndex(1)
+6 >Emitted(43, 20) Source(1, 21) + SourceIndex(1)
 ---
 >>>    function forlibfile1Rest() {
 1->^^^^
@@ -265,9 +269,9 @@ sourceFile:../lib/file1.ts
 1->
 2 >    function 
 3 >             forlibfile1Rest
-1->Emitted(42, 5) Source(1, 21) + SourceIndex(1)
-2 >Emitted(42, 14) Source(1, 30) + SourceIndex(1)
-3 >Emitted(42, 29) Source(1, 45) + SourceIndex(1)
+1->Emitted(44, 5) Source(1, 21) + SourceIndex(1)
+2 >Emitted(44, 14) Source(1, 30) + SourceIndex(1)
+3 >Emitted(44, 29) Source(1, 45) + SourceIndex(1)
 ---
 >>>        var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^^^^^
@@ -287,14 +291,14 @@ sourceFile:../lib/file1.ts
 6 >                                                   , 
 7 >                                                     ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                             ;
-1->Emitted(43, 9) Source(2, 1) + SourceIndex(1)
-2 >Emitted(43, 13) Source(2, 7) + SourceIndex(1)
-3 >Emitted(43, 42) Source(2, 48) + SourceIndex(1)
-4 >Emitted(43, 44) Source(2, 9) + SourceIndex(1)
-5 >Emitted(43, 52) Source(2, 10) + SourceIndex(1)
-6 >Emitted(43, 54) Source(2, 12) + SourceIndex(1)
-7 >Emitted(43, 78) Source(2, 48) + SourceIndex(1)
-8 >Emitted(43, 79) Source(2, 49) + SourceIndex(1)
+1->Emitted(45, 9) Source(2, 1) + SourceIndex(1)
+2 >Emitted(45, 13) Source(2, 7) + SourceIndex(1)
+3 >Emitted(45, 42) Source(2, 48) + SourceIndex(1)
+4 >Emitted(45, 44) Source(2, 9) + SourceIndex(1)
+5 >Emitted(45, 52) Source(2, 10) + SourceIndex(1)
+6 >Emitted(45, 54) Source(2, 12) + SourceIndex(1)
+7 >Emitted(45, 78) Source(2, 48) + SourceIndex(1)
+8 >Emitted(45, 79) Source(2, 49) + SourceIndex(1)
 ---
 >>>    }
 1 >^^^^
@@ -303,8 +307,8 @@ sourceFile:../lib/file1.ts
 1 >
   >
 2 >    }
-1 >Emitted(44, 5) Source(3, 1) + SourceIndex(1)
-2 >Emitted(44, 6) Source(3, 2) + SourceIndex(1)
+1 >Emitted(46, 5) Source(3, 1) + SourceIndex(1)
+2 >Emitted(46, 6) Source(3, 2) + SourceIndex(1)
 ---
 >>>    console.log(exports.x);
 1->^^^^
@@ -323,14 +327,14 @@ sourceFile:../lib/file1.ts
 6 >                x
 7 >                         )
 8 >                          ;
-1->Emitted(45, 5) Source(3, 2) + SourceIndex(1)
-2 >Emitted(45, 12) Source(3, 9) + SourceIndex(1)
-3 >Emitted(45, 13) Source(3, 10) + SourceIndex(1)
-4 >Emitted(45, 16) Source(3, 13) + SourceIndex(1)
-5 >Emitted(45, 17) Source(3, 14) + SourceIndex(1)
-6 >Emitted(45, 26) Source(3, 15) + SourceIndex(1)
-7 >Emitted(45, 27) Source(3, 16) + SourceIndex(1)
-8 >Emitted(45, 28) Source(3, 17) + SourceIndex(1)
+1->Emitted(47, 5) Source(3, 2) + SourceIndex(1)
+2 >Emitted(47, 12) Source(3, 9) + SourceIndex(1)
+3 >Emitted(47, 13) Source(3, 10) + SourceIndex(1)
+4 >Emitted(47, 16) Source(3, 13) + SourceIndex(1)
+5 >Emitted(47, 17) Source(3, 14) + SourceIndex(1)
+6 >Emitted(47, 26) Source(3, 15) + SourceIndex(1)
+7 >Emitted(47, 27) Source(3, 16) + SourceIndex(1)
+8 >Emitted(47, 28) Source(3, 17) + SourceIndex(1)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/app/module.js
@@ -353,12 +357,12 @@ sourceFile:../lib/file2.ts
 4 >              = 
 5 >                20
 6 >                  ;
-1 >Emitted(50, 5) Source(1, 14) + SourceIndex(2)
-2 >Emitted(50, 13) Source(1, 14) + SourceIndex(2)
-3 >Emitted(50, 14) Source(1, 15) + SourceIndex(2)
-4 >Emitted(50, 17) Source(1, 18) + SourceIndex(2)
-5 >Emitted(50, 19) Source(1, 20) + SourceIndex(2)
-6 >Emitted(50, 20) Source(1, 21) + SourceIndex(2)
+1 >Emitted(52, 5) Source(1, 14) + SourceIndex(2)
+2 >Emitted(52, 13) Source(1, 14) + SourceIndex(2)
+3 >Emitted(52, 14) Source(1, 15) + SourceIndex(2)
+4 >Emitted(52, 17) Source(1, 18) + SourceIndex(2)
+5 >Emitted(52, 19) Source(1, 20) + SourceIndex(2)
+6 >Emitted(52, 20) Source(1, 21) + SourceIndex(2)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/app/module.js
@@ -379,12 +383,12 @@ sourceFile:../lib/global.ts
 4 >                = 
 5 >                  10
 6 >                    ;
-1 >Emitted(52, 1) Source(1, 1) + SourceIndex(3)
-2 >Emitted(52, 5) Source(1, 7) + SourceIndex(3)
-3 >Emitted(52, 16) Source(1, 18) + SourceIndex(3)
-4 >Emitted(52, 19) Source(1, 21) + SourceIndex(3)
-5 >Emitted(52, 21) Source(1, 23) + SourceIndex(3)
-6 >Emitted(52, 22) Source(1, 24) + SourceIndex(3)
+1 >Emitted(54, 1) Source(1, 1) + SourceIndex(3)
+2 >Emitted(54, 5) Source(1, 7) + SourceIndex(3)
+3 >Emitted(54, 16) Source(1, 18) + SourceIndex(3)
+4 >Emitted(54, 19) Source(1, 21) + SourceIndex(3)
+5 >Emitted(54, 21) Source(1, 23) + SourceIndex(3)
+6 >Emitted(54, 22) Source(1, 24) + SourceIndex(3)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/app/module.js
@@ -407,12 +411,12 @@ sourceFile:file3.ts
 4 >              = 
 5 >                30
 6 >                  ;
-1->Emitted(56, 5) Source(1, 14) + SourceIndex(4)
-2 >Emitted(56, 13) Source(1, 14) + SourceIndex(4)
-3 >Emitted(56, 14) Source(1, 15) + SourceIndex(4)
-4 >Emitted(56, 17) Source(1, 18) + SourceIndex(4)
-5 >Emitted(56, 19) Source(1, 20) + SourceIndex(4)
-6 >Emitted(56, 20) Source(1, 21) + SourceIndex(4)
+1->Emitted(58, 5) Source(1, 14) + SourceIndex(4)
+2 >Emitted(58, 13) Source(1, 14) + SourceIndex(4)
+3 >Emitted(58, 14) Source(1, 15) + SourceIndex(4)
+4 >Emitted(58, 17) Source(1, 18) + SourceIndex(4)
+5 >Emitted(58, 19) Source(1, 20) + SourceIndex(4)
+6 >Emitted(58, 20) Source(1, 21) + SourceIndex(4)
 ---
 >>>    function forappfile3Rest() {
 1->^^^^
@@ -423,9 +427,9 @@ sourceFile:file3.ts
   >import { x } from "file1";
 2 >    function 
 3 >             forappfile3Rest
-1->Emitted(57, 5) Source(2, 27) + SourceIndex(4)
-2 >Emitted(57, 14) Source(2, 36) + SourceIndex(4)
-3 >Emitted(57, 29) Source(2, 51) + SourceIndex(4)
+1->Emitted(59, 5) Source(2, 27) + SourceIndex(4)
+2 >Emitted(59, 14) Source(2, 36) + SourceIndex(4)
+3 >Emitted(59, 29) Source(2, 51) + SourceIndex(4)
 ---
 >>>        var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^^^^^
@@ -445,14 +449,14 @@ sourceFile:file3.ts
 6 >                                                   , 
 7 >                                                     ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                             ;
-1->Emitted(58, 9) Source(3, 1) + SourceIndex(4)
-2 >Emitted(58, 13) Source(3, 7) + SourceIndex(4)
-3 >Emitted(58, 42) Source(3, 48) + SourceIndex(4)
-4 >Emitted(58, 44) Source(3, 9) + SourceIndex(4)
-5 >Emitted(58, 52) Source(3, 10) + SourceIndex(4)
-6 >Emitted(58, 54) Source(3, 12) + SourceIndex(4)
-7 >Emitted(58, 78) Source(3, 48) + SourceIndex(4)
-8 >Emitted(58, 79) Source(3, 49) + SourceIndex(4)
+1->Emitted(60, 9) Source(3, 1) + SourceIndex(4)
+2 >Emitted(60, 13) Source(3, 7) + SourceIndex(4)
+3 >Emitted(60, 42) Source(3, 48) + SourceIndex(4)
+4 >Emitted(60, 44) Source(3, 9) + SourceIndex(4)
+5 >Emitted(60, 52) Source(3, 10) + SourceIndex(4)
+6 >Emitted(60, 54) Source(3, 12) + SourceIndex(4)
+7 >Emitted(60, 78) Source(3, 48) + SourceIndex(4)
+8 >Emitted(60, 79) Source(3, 49) + SourceIndex(4)
 ---
 >>>    }
 1 >^^^^
@@ -460,8 +464,8 @@ sourceFile:file3.ts
 1 >
   >
 2 >    }
-1 >Emitted(59, 5) Source(4, 1) + SourceIndex(4)
-2 >Emitted(59, 6) Source(4, 2) + SourceIndex(4)
+1 >Emitted(61, 5) Source(4, 1) + SourceIndex(4)
+2 >Emitted(61, 6) Source(4, 2) + SourceIndex(4)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/app/module.js
@@ -482,12 +486,12 @@ sourceFile:file4.ts
 4 >          = 
 5 >            30
 6 >              ;
-1 >Emitted(61, 1) Source(1, 1) + SourceIndex(5)
-2 >Emitted(61, 5) Source(1, 7) + SourceIndex(5)
-3 >Emitted(61, 10) Source(1, 12) + SourceIndex(5)
-4 >Emitted(61, 13) Source(1, 15) + SourceIndex(5)
-5 >Emitted(61, 15) Source(1, 17) + SourceIndex(5)
-6 >Emitted(61, 16) Source(1, 18) + SourceIndex(5)
+1 >Emitted(63, 1) Source(1, 1) + SourceIndex(5)
+2 >Emitted(63, 5) Source(1, 7) + SourceIndex(5)
+3 >Emitted(63, 10) Source(1, 12) + SourceIndex(5)
+4 >Emitted(63, 13) Source(1, 15) + SourceIndex(5)
+5 >Emitted(63, 15) Source(1, 17) + SourceIndex(5)
+6 >Emitted(63, 16) Source(1, 18) + SourceIndex(5)
 ---
 >>>function appfile4Spread() {
 1->
@@ -497,9 +501,9 @@ sourceFile:file4.ts
   >
 2 >function 
 3 >         appfile4Spread
-1->Emitted(62, 1) Source(2, 1) + SourceIndex(5)
-2 >Emitted(62, 10) Source(2, 10) + SourceIndex(5)
-3 >Emitted(62, 24) Source(2, 24) + SourceIndex(5)
+1->Emitted(64, 1) Source(2, 1) + SourceIndex(5)
+2 >Emitted(64, 10) Source(2, 10) + SourceIndex(5)
+3 >Emitted(64, 24) Source(2, 24) + SourceIndex(5)
 ---
 >>>    var b = [];
 1 >^^^^
@@ -507,8 +511,8 @@ sourceFile:file4.ts
 3 >               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >(
 2 >    ...b: number[]
-1 >Emitted(63, 5) Source(2, 25) + SourceIndex(5)
-2 >Emitted(63, 16) Source(2, 39) + SourceIndex(5)
+1 >Emitted(65, 5) Source(2, 25) + SourceIndex(5)
+2 >Emitted(65, 16) Source(2, 39) + SourceIndex(5)
 ---
 >>>    for (var _i = 0; _i < arguments.length; _i++) {
 1->^^^^^^^^^
@@ -523,20 +527,20 @@ sourceFile:file4.ts
 4 >                     ...b: number[]
 5 >                                          
 6 >                                            ...b: number[]
-1->Emitted(64, 10) Source(2, 25) + SourceIndex(5)
-2 >Emitted(64, 20) Source(2, 39) + SourceIndex(5)
-3 >Emitted(64, 22) Source(2, 25) + SourceIndex(5)
-4 >Emitted(64, 43) Source(2, 39) + SourceIndex(5)
-5 >Emitted(64, 45) Source(2, 25) + SourceIndex(5)
-6 >Emitted(64, 49) Source(2, 39) + SourceIndex(5)
+1->Emitted(66, 10) Source(2, 25) + SourceIndex(5)
+2 >Emitted(66, 20) Source(2, 39) + SourceIndex(5)
+3 >Emitted(66, 22) Source(2, 25) + SourceIndex(5)
+4 >Emitted(66, 43) Source(2, 39) + SourceIndex(5)
+5 >Emitted(66, 45) Source(2, 25) + SourceIndex(5)
+6 >Emitted(66, 49) Source(2, 39) + SourceIndex(5)
 ---
 >>>        b[_i] = arguments[_i];
 1 >^^^^^^^^
 2 >        ^^^^^^^^^^^^^^^^^^^^^^
 1 >
 2 >        ...b: number[]
-1 >Emitted(65, 9) Source(2, 25) + SourceIndex(5)
-2 >Emitted(65, 31) Source(2, 39) + SourceIndex(5)
+1 >Emitted(67, 9) Source(2, 25) + SourceIndex(5)
+2 >Emitted(67, 31) Source(2, 39) + SourceIndex(5)
 ---
 >>>    }
 >>>}
@@ -545,8 +549,8 @@ sourceFile:file4.ts
 3 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >) { 
 2 >}
-1 >Emitted(67, 1) Source(2, 43) + SourceIndex(5)
-2 >Emitted(67, 2) Source(2, 44) + SourceIndex(5)
+1 >Emitted(69, 1) Source(2, 43) + SourceIndex(5)
+2 >Emitted(69, 2) Source(2, 44) + SourceIndex(5)
 ---
 >>>appfile4Spread.apply(void 0, __spread([10, 20, 30]));
 1->
@@ -572,17 +576,17 @@ sourceFile:file4.ts
 9 >                                               30
 10>                                                 ]
 11>                                                  );
-1->Emitted(68, 1) Source(3, 1) + SourceIndex(5)
-2 >Emitted(68, 15) Source(3, 15) + SourceIndex(5)
-3 >Emitted(68, 39) Source(3, 19) + SourceIndex(5)
-4 >Emitted(68, 40) Source(3, 20) + SourceIndex(5)
-5 >Emitted(68, 42) Source(3, 22) + SourceIndex(5)
-6 >Emitted(68, 44) Source(3, 24) + SourceIndex(5)
-7 >Emitted(68, 46) Source(3, 26) + SourceIndex(5)
-8 >Emitted(68, 48) Source(3, 28) + SourceIndex(5)
-9 >Emitted(68, 50) Source(3, 30) + SourceIndex(5)
-10>Emitted(68, 51) Source(3, 31) + SourceIndex(5)
-11>Emitted(68, 54) Source(3, 33) + SourceIndex(5)
+1->Emitted(70, 1) Source(3, 1) + SourceIndex(5)
+2 >Emitted(70, 15) Source(3, 15) + SourceIndex(5)
+3 >Emitted(70, 39) Source(3, 19) + SourceIndex(5)
+4 >Emitted(70, 40) Source(3, 20) + SourceIndex(5)
+5 >Emitted(70, 42) Source(3, 22) + SourceIndex(5)
+6 >Emitted(70, 44) Source(3, 24) + SourceIndex(5)
+7 >Emitted(70, 46) Source(3, 26) + SourceIndex(5)
+8 >Emitted(70, 48) Source(3, 28) + SourceIndex(5)
+9 >Emitted(70, 50) Source(3, 30) + SourceIndex(5)
+10>Emitted(70, 51) Source(3, 31) + SourceIndex(5)
+11>Emitted(70, 54) Source(3, 33) + SourceIndex(5)
 ---
 >>>//# sourceMappingURL=module.js.map
 
@@ -610,26 +614,26 @@ sourceFile:file4.ts
         },
         {
           "pos": 678,
-          "end": 1093,
+          "end": 1178,
           "kind": "emitHelpers",
           "data": "typescript:rest"
         },
         {
-          "pos": 1095,
-          "end": 1850,
+          "pos": 1180,
+          "end": 1935,
           "kind": "prepend",
           "data": "/src/lib/module.js",
           "texts": [
             {
-              "pos": 1095,
-              "end": 1850,
+              "pos": 1180,
+              "end": 1935,
               "kind": "text"
             }
           ]
         },
         {
-          "pos": 1850,
-          "end": 2368,
+          "pos": 1935,
+          "end": 2453,
           "kind": "text"
         }
       ],
@@ -695,20 +699,22 @@ var __spread = (this && this.__spread) || function () {
     return ar;
 };
 ----------------------------------------------------------------------
-emitHelpers: (678-1093):: typescript:rest
+emitHelpers: (678-1178):: typescript:rest
 var __rest = (this && this.__rest) || function (s, e) {
     var t = {};
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 ----------------------------------------------------------------------
-prepend: (1095-1850):: /src/lib/module.js texts:: 1
+prepend: (1180-1935):: /src/lib/module.js texts:: 1
 >>--------------------------------------------------------------------
-text: (1095-1850)
+text: (1180-1935)
 var myGlob = 20;
 function libfile0Spread() {
     var b = [];
@@ -734,7 +740,7 @@ define("file2", ["require", "exports"], function (require, exports) {
 var globalConst = 10;
 
 ----------------------------------------------------------------------
-text: (1850-2368)
+text: (1935-2453)
 define("file3", ["require", "exports"], function (require, exports) {
     "use strict";
     Object.defineProperty(exports, "__esModule", { value: true });
@@ -810,8 +816,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var myGlob = 20;
@@ -840,7 +848,7 @@ var globalConst = 10;
 //# sourceMappingURL=module.js.map
 
 //// [/src/lib/module.js.map]
-{"version":3,"file":"module.js","sourceRoot":"","sources":["file0.ts","file1.ts","file2.ts","global.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,IAAM,MAAM,GAAG,EAAE,CAAC;AAClB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE;;;;ICFnB,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,SAAS,eAAe;QAC5C,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;IAChD,CAAC;IAAA,OAAO,CAAC,GAAG,CAAC,SAAC,CAAC,CAAC;;;;;ICFH,QAAA,CAAC,GAAG,EAAE,CAAC;;ACApB,IAAM,WAAW,GAAG,EAAE,CAAC"}
+{"version":3,"file":"module.js","sourceRoot":"","sources":["file0.ts","file1.ts","file2.ts","global.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,IAAM,MAAM,GAAG,EAAE,CAAC;AAClB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE;;;;ICFnB,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,SAAS,eAAe;QAC5C,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;IAChD,CAAC;IAAA,OAAO,CAAC,GAAG,CAAC,SAAC,CAAC,CAAC;;;;;ICFH,QAAA,CAAC,GAAG,EAAE,CAAC;;ACApB,IAAM,WAAW,GAAG,EAAE,CAAC"}
 
 //// [/src/lib/module.js.map.baseline.txt]
 ===================================================================
@@ -878,8 +886,10 @@ sourceFile:file0.ts
 >>>    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
 >>>        t[p] = s[p];
 >>>    if (s != null && typeof Object.getOwnPropertySymbols === "function")
->>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
->>>            t[p[i]] = s[p[i]];
+>>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+>>>            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+>>>                t[p[i]] = s[p[i]];
+>>>        }
 >>>    return t;
 >>>};
 >>>var myGlob = 20;
@@ -896,12 +906,12 @@ sourceFile:file0.ts
 4 >           = 
 5 >             20
 6 >               ;
-1 >Emitted(30, 1) Source(1, 1) + SourceIndex(0)
-2 >Emitted(30, 5) Source(1, 7) + SourceIndex(0)
-3 >Emitted(30, 11) Source(1, 13) + SourceIndex(0)
-4 >Emitted(30, 14) Source(1, 16) + SourceIndex(0)
-5 >Emitted(30, 16) Source(1, 18) + SourceIndex(0)
-6 >Emitted(30, 17) Source(1, 19) + SourceIndex(0)
+1 >Emitted(32, 1) Source(1, 1) + SourceIndex(0)
+2 >Emitted(32, 5) Source(1, 7) + SourceIndex(0)
+3 >Emitted(32, 11) Source(1, 13) + SourceIndex(0)
+4 >Emitted(32, 14) Source(1, 16) + SourceIndex(0)
+5 >Emitted(32, 16) Source(1, 18) + SourceIndex(0)
+6 >Emitted(32, 17) Source(1, 19) + SourceIndex(0)
 ---
 >>>function libfile0Spread() {
 1->
@@ -911,9 +921,9 @@ sourceFile:file0.ts
   >
 2 >function 
 3 >         libfile0Spread
-1->Emitted(31, 1) Source(2, 1) + SourceIndex(0)
-2 >Emitted(31, 10) Source(2, 10) + SourceIndex(0)
-3 >Emitted(31, 24) Source(2, 24) + SourceIndex(0)
+1->Emitted(33, 1) Source(2, 1) + SourceIndex(0)
+2 >Emitted(33, 10) Source(2, 10) + SourceIndex(0)
+3 >Emitted(33, 24) Source(2, 24) + SourceIndex(0)
 ---
 >>>    var b = [];
 1 >^^^^
@@ -921,8 +931,8 @@ sourceFile:file0.ts
 3 >               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >(
 2 >    ...b: number[]
-1 >Emitted(32, 5) Source(2, 25) + SourceIndex(0)
-2 >Emitted(32, 16) Source(2, 39) + SourceIndex(0)
+1 >Emitted(34, 5) Source(2, 25) + SourceIndex(0)
+2 >Emitted(34, 16) Source(2, 39) + SourceIndex(0)
 ---
 >>>    for (var _i = 0; _i < arguments.length; _i++) {
 1->^^^^^^^^^
@@ -937,20 +947,20 @@ sourceFile:file0.ts
 4 >                     ...b: number[]
 5 >                                          
 6 >                                            ...b: number[]
-1->Emitted(33, 10) Source(2, 25) + SourceIndex(0)
-2 >Emitted(33, 20) Source(2, 39) + SourceIndex(0)
-3 >Emitted(33, 22) Source(2, 25) + SourceIndex(0)
-4 >Emitted(33, 43) Source(2, 39) + SourceIndex(0)
-5 >Emitted(33, 45) Source(2, 25) + SourceIndex(0)
-6 >Emitted(33, 49) Source(2, 39) + SourceIndex(0)
+1->Emitted(35, 10) Source(2, 25) + SourceIndex(0)
+2 >Emitted(35, 20) Source(2, 39) + SourceIndex(0)
+3 >Emitted(35, 22) Source(2, 25) + SourceIndex(0)
+4 >Emitted(35, 43) Source(2, 39) + SourceIndex(0)
+5 >Emitted(35, 45) Source(2, 25) + SourceIndex(0)
+6 >Emitted(35, 49) Source(2, 39) + SourceIndex(0)
 ---
 >>>        b[_i] = arguments[_i];
 1 >^^^^^^^^
 2 >        ^^^^^^^^^^^^^^^^^^^^^^
 1 >
 2 >        ...b: number[]
-1 >Emitted(34, 9) Source(2, 25) + SourceIndex(0)
-2 >Emitted(34, 31) Source(2, 39) + SourceIndex(0)
+1 >Emitted(36, 9) Source(2, 25) + SourceIndex(0)
+2 >Emitted(36, 31) Source(2, 39) + SourceIndex(0)
 ---
 >>>    }
 >>>}
@@ -959,8 +969,8 @@ sourceFile:file0.ts
 3 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >) { 
 2 >}
-1 >Emitted(36, 1) Source(2, 43) + SourceIndex(0)
-2 >Emitted(36, 2) Source(2, 44) + SourceIndex(0)
+1 >Emitted(38, 1) Source(2, 43) + SourceIndex(0)
+2 >Emitted(38, 2) Source(2, 44) + SourceIndex(0)
 ---
 >>>libfile0Spread.apply(void 0, __spread([10, 20, 30]));
 1->
@@ -987,17 +997,17 @@ sourceFile:file0.ts
 9 >                                               30
 10>                                                 ]
 11>                                                  );
-1->Emitted(37, 1) Source(3, 1) + SourceIndex(0)
-2 >Emitted(37, 15) Source(3, 15) + SourceIndex(0)
-3 >Emitted(37, 39) Source(3, 19) + SourceIndex(0)
-4 >Emitted(37, 40) Source(3, 20) + SourceIndex(0)
-5 >Emitted(37, 42) Source(3, 22) + SourceIndex(0)
-6 >Emitted(37, 44) Source(3, 24) + SourceIndex(0)
-7 >Emitted(37, 46) Source(3, 26) + SourceIndex(0)
-8 >Emitted(37, 48) Source(3, 28) + SourceIndex(0)
-9 >Emitted(37, 50) Source(3, 30) + SourceIndex(0)
-10>Emitted(37, 51) Source(3, 31) + SourceIndex(0)
-11>Emitted(37, 54) Source(3, 33) + SourceIndex(0)
+1->Emitted(39, 1) Source(3, 1) + SourceIndex(0)
+2 >Emitted(39, 15) Source(3, 15) + SourceIndex(0)
+3 >Emitted(39, 39) Source(3, 19) + SourceIndex(0)
+4 >Emitted(39, 40) Source(3, 20) + SourceIndex(0)
+5 >Emitted(39, 42) Source(3, 22) + SourceIndex(0)
+6 >Emitted(39, 44) Source(3, 24) + SourceIndex(0)
+7 >Emitted(39, 46) Source(3, 26) + SourceIndex(0)
+8 >Emitted(39, 48) Source(3, 28) + SourceIndex(0)
+9 >Emitted(39, 50) Source(3, 30) + SourceIndex(0)
+10>Emitted(39, 51) Source(3, 31) + SourceIndex(0)
+11>Emitted(39, 54) Source(3, 33) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/lib/module.js
@@ -1020,12 +1030,12 @@ sourceFile:file1.ts
 4 >              = 
 5 >                10
 6 >                  ;
-1->Emitted(41, 5) Source(1, 14) + SourceIndex(1)
-2 >Emitted(41, 13) Source(1, 14) + SourceIndex(1)
-3 >Emitted(41, 14) Source(1, 15) + SourceIndex(1)
-4 >Emitted(41, 17) Source(1, 18) + SourceIndex(1)
-5 >Emitted(41, 19) Source(1, 20) + SourceIndex(1)
-6 >Emitted(41, 20) Source(1, 21) + SourceIndex(1)
+1->Emitted(43, 5) Source(1, 14) + SourceIndex(1)
+2 >Emitted(43, 13) Source(1, 14) + SourceIndex(1)
+3 >Emitted(43, 14) Source(1, 15) + SourceIndex(1)
+4 >Emitted(43, 17) Source(1, 18) + SourceIndex(1)
+5 >Emitted(43, 19) Source(1, 20) + SourceIndex(1)
+6 >Emitted(43, 20) Source(1, 21) + SourceIndex(1)
 ---
 >>>    function forlibfile1Rest() {
 1->^^^^
@@ -1035,9 +1045,9 @@ sourceFile:file1.ts
 1->
 2 >    function 
 3 >             forlibfile1Rest
-1->Emitted(42, 5) Source(1, 21) + SourceIndex(1)
-2 >Emitted(42, 14) Source(1, 30) + SourceIndex(1)
-3 >Emitted(42, 29) Source(1, 45) + SourceIndex(1)
+1->Emitted(44, 5) Source(1, 21) + SourceIndex(1)
+2 >Emitted(44, 14) Source(1, 30) + SourceIndex(1)
+3 >Emitted(44, 29) Source(1, 45) + SourceIndex(1)
 ---
 >>>        var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^^^^^
@@ -1057,14 +1067,14 @@ sourceFile:file1.ts
 6 >                                                   , 
 7 >                                                     ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                             ;
-1->Emitted(43, 9) Source(2, 1) + SourceIndex(1)
-2 >Emitted(43, 13) Source(2, 7) + SourceIndex(1)
-3 >Emitted(43, 42) Source(2, 48) + SourceIndex(1)
-4 >Emitted(43, 44) Source(2, 9) + SourceIndex(1)
-5 >Emitted(43, 52) Source(2, 10) + SourceIndex(1)
-6 >Emitted(43, 54) Source(2, 12) + SourceIndex(1)
-7 >Emitted(43, 78) Source(2, 48) + SourceIndex(1)
-8 >Emitted(43, 79) Source(2, 49) + SourceIndex(1)
+1->Emitted(45, 9) Source(2, 1) + SourceIndex(1)
+2 >Emitted(45, 13) Source(2, 7) + SourceIndex(1)
+3 >Emitted(45, 42) Source(2, 48) + SourceIndex(1)
+4 >Emitted(45, 44) Source(2, 9) + SourceIndex(1)
+5 >Emitted(45, 52) Source(2, 10) + SourceIndex(1)
+6 >Emitted(45, 54) Source(2, 12) + SourceIndex(1)
+7 >Emitted(45, 78) Source(2, 48) + SourceIndex(1)
+8 >Emitted(45, 79) Source(2, 49) + SourceIndex(1)
 ---
 >>>    }
 1 >^^^^
@@ -1073,8 +1083,8 @@ sourceFile:file1.ts
 1 >
   >
 2 >    }
-1 >Emitted(44, 5) Source(3, 1) + SourceIndex(1)
-2 >Emitted(44, 6) Source(3, 2) + SourceIndex(1)
+1 >Emitted(46, 5) Source(3, 1) + SourceIndex(1)
+2 >Emitted(46, 6) Source(3, 2) + SourceIndex(1)
 ---
 >>>    console.log(exports.x);
 1->^^^^
@@ -1093,14 +1103,14 @@ sourceFile:file1.ts
 6 >                x
 7 >                         )
 8 >                          ;
-1->Emitted(45, 5) Source(3, 2) + SourceIndex(1)
-2 >Emitted(45, 12) Source(3, 9) + SourceIndex(1)
-3 >Emitted(45, 13) Source(3, 10) + SourceIndex(1)
-4 >Emitted(45, 16) Source(3, 13) + SourceIndex(1)
-5 >Emitted(45, 17) Source(3, 14) + SourceIndex(1)
-6 >Emitted(45, 26) Source(3, 15) + SourceIndex(1)
-7 >Emitted(45, 27) Source(3, 16) + SourceIndex(1)
-8 >Emitted(45, 28) Source(3, 17) + SourceIndex(1)
+1->Emitted(47, 5) Source(3, 2) + SourceIndex(1)
+2 >Emitted(47, 12) Source(3, 9) + SourceIndex(1)
+3 >Emitted(47, 13) Source(3, 10) + SourceIndex(1)
+4 >Emitted(47, 16) Source(3, 13) + SourceIndex(1)
+5 >Emitted(47, 17) Source(3, 14) + SourceIndex(1)
+6 >Emitted(47, 26) Source(3, 15) + SourceIndex(1)
+7 >Emitted(47, 27) Source(3, 16) + SourceIndex(1)
+8 >Emitted(47, 28) Source(3, 17) + SourceIndex(1)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/lib/module.js
@@ -1123,12 +1133,12 @@ sourceFile:file2.ts
 4 >              = 
 5 >                20
 6 >                  ;
-1 >Emitted(50, 5) Source(1, 14) + SourceIndex(2)
-2 >Emitted(50, 13) Source(1, 14) + SourceIndex(2)
-3 >Emitted(50, 14) Source(1, 15) + SourceIndex(2)
-4 >Emitted(50, 17) Source(1, 18) + SourceIndex(2)
-5 >Emitted(50, 19) Source(1, 20) + SourceIndex(2)
-6 >Emitted(50, 20) Source(1, 21) + SourceIndex(2)
+1 >Emitted(52, 5) Source(1, 14) + SourceIndex(2)
+2 >Emitted(52, 13) Source(1, 14) + SourceIndex(2)
+3 >Emitted(52, 14) Source(1, 15) + SourceIndex(2)
+4 >Emitted(52, 17) Source(1, 18) + SourceIndex(2)
+5 >Emitted(52, 19) Source(1, 20) + SourceIndex(2)
+6 >Emitted(52, 20) Source(1, 21) + SourceIndex(2)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/lib/module.js
@@ -1149,12 +1159,12 @@ sourceFile:global.ts
 4 >                = 
 5 >                  10
 6 >                    ;
-1 >Emitted(52, 1) Source(1, 1) + SourceIndex(3)
-2 >Emitted(52, 5) Source(1, 7) + SourceIndex(3)
-3 >Emitted(52, 16) Source(1, 18) + SourceIndex(3)
-4 >Emitted(52, 19) Source(1, 21) + SourceIndex(3)
-5 >Emitted(52, 21) Source(1, 23) + SourceIndex(3)
-6 >Emitted(52, 22) Source(1, 24) + SourceIndex(3)
+1 >Emitted(54, 1) Source(1, 1) + SourceIndex(3)
+2 >Emitted(54, 5) Source(1, 7) + SourceIndex(3)
+3 >Emitted(54, 16) Source(1, 18) + SourceIndex(3)
+4 >Emitted(54, 19) Source(1, 21) + SourceIndex(3)
+5 >Emitted(54, 21) Source(1, 23) + SourceIndex(3)
+6 >Emitted(54, 22) Source(1, 24) + SourceIndex(3)
 ---
 >>>//# sourceMappingURL=module.js.map
 
@@ -1184,13 +1194,13 @@ sourceFile:global.ts
         },
         {
           "pos": 678,
-          "end": 1093,
+          "end": 1178,
           "kind": "emitHelpers",
           "data": "typescript:rest"
         },
         {
-          "pos": 1095,
-          "end": 1850,
+          "pos": 1180,
+          "end": 1935,
           "kind": "text"
         }
       ],
@@ -1243,18 +1253,20 @@ var __spread = (this && this.__spread) || function () {
     return ar;
 };
 ----------------------------------------------------------------------
-emitHelpers: (678-1093):: typescript:rest
+emitHelpers: (678-1178):: typescript:rest
 var __rest = (this && this.__rest) || function (s, e) {
     var t = {};
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 ----------------------------------------------------------------------
-text: (1095-1850)
+text: (1180-1935)
 var myGlob = 20;
 function libfile0Spread() {
     var b = [];

tests/baselines/reference/tsbuild/amdModulesWithOut/incremental-headers-change-without-dts-changes/multiple-emitHelpers-in-all-projects.js

@@ -24,8 +24,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var myGlob = 20;
@@ -67,7 +69,7 @@ appfile4Spread.apply(void 0, __spread([10, 20, 30]));
 //# sourceMappingURL=module.js.map
 
 //// [/src/app/module.js.map]
-{"version":3,"file":"module.js","sourceRoot":"","sources":["../lib/file0.ts","../lib/file1.ts","../lib/file2.ts","../lib/global.ts","file3.ts","file4.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,IAAM,MAAM,GAAG,EAAE,CAAC;AAClB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE;;;;ICFnB,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,SAAS,eAAe,KAAK,CAAC;;;;;ICArC,QAAA,CAAC,GAAG,EAAE,CAAC;;ACApB,IAAM,WAAW,GAAG,EAAE,CAAC;;;;ICAV,QAAA,CAAC,GAAG,EAAE,CAAC;IACM,SAAS,eAAe;QAClD,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;IAChD,CAAC;;ACHD,IAAM,KAAK,GAAG,EAAE,CAAC;AACjB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE"}
+{"version":3,"file":"module.js","sourceRoot":"","sources":["../lib/file0.ts","../lib/file1.ts","../lib/file2.ts","../lib/global.ts","file3.ts","file4.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,IAAM,MAAM,GAAG,EAAE,CAAC;AAClB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE;;;;ICFnB,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,SAAS,eAAe,KAAK,CAAC;;;;;ICArC,QAAA,CAAC,GAAG,EAAE,CAAC;;ACApB,IAAM,WAAW,GAAG,EAAE,CAAC;;;;ICAV,QAAA,CAAC,GAAG,EAAE,CAAC;IACM,SAAS,eAAe;QAClD,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;IAChD,CAAC;;ACHD,IAAM,KAAK,GAAG,EAAE,CAAC;AACjB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE"}
 
 //// [/src/app/module.js.map.baseline.txt]
 ===================================================================
@@ -105,8 +107,10 @@ sourceFile:../lib/file0.ts
 >>>    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
 >>>        t[p] = s[p];
 >>>    if (s != null && typeof Object.getOwnPropertySymbols === "function")
->>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
->>>            t[p[i]] = s[p[i]];
+>>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+>>>            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+>>>                t[p[i]] = s[p[i]];
+>>>        }
 >>>    return t;
 >>>};
 >>>var myGlob = 20;
@@ -123,12 +127,12 @@ sourceFile:../lib/file0.ts
 4 >           = 
 5 >             20
 6 >               ;
-1 >Emitted(30, 1) Source(1, 1) + SourceIndex(0)
-2 >Emitted(30, 5) Source(1, 7) + SourceIndex(0)
-3 >Emitted(30, 11) Source(1, 13) + SourceIndex(0)
-4 >Emitted(30, 14) Source(1, 16) + SourceIndex(0)
-5 >Emitted(30, 16) Source(1, 18) + SourceIndex(0)
-6 >Emitted(30, 17) Source(1, 19) + SourceIndex(0)
+1 >Emitted(32, 1) Source(1, 1) + SourceIndex(0)
+2 >Emitted(32, 5) Source(1, 7) + SourceIndex(0)
+3 >Emitted(32, 11) Source(1, 13) + SourceIndex(0)
+4 >Emitted(32, 14) Source(1, 16) + SourceIndex(0)
+5 >Emitted(32, 16) Source(1, 18) + SourceIndex(0)
+6 >Emitted(32, 17) Source(1, 19) + SourceIndex(0)
 ---
 >>>function libfile0Spread() {
 1->
@@ -138,9 +142,9 @@ sourceFile:../lib/file0.ts
   >
 2 >function 
 3 >         libfile0Spread
-1->Emitted(31, 1) Source(2, 1) + SourceIndex(0)
-2 >Emitted(31, 10) Source(2, 10) + SourceIndex(0)
-3 >Emitted(31, 24) Source(2, 24) + SourceIndex(0)
+1->Emitted(33, 1) Source(2, 1) + SourceIndex(0)
+2 >Emitted(33, 10) Source(2, 10) + SourceIndex(0)
+3 >Emitted(33, 24) Source(2, 24) + SourceIndex(0)
 ---
 >>>    var b = [];
 1 >^^^^
@@ -148,8 +152,8 @@ sourceFile:../lib/file0.ts
 3 >               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >(
 2 >    ...b: number[]
-1 >Emitted(32, 5) Source(2, 25) + SourceIndex(0)
-2 >Emitted(32, 16) Source(2, 39) + SourceIndex(0)
+1 >Emitted(34, 5) Source(2, 25) + SourceIndex(0)
+2 >Emitted(34, 16) Source(2, 39) + SourceIndex(0)
 ---
 >>>    for (var _i = 0; _i < arguments.length; _i++) {
 1->^^^^^^^^^
@@ -164,20 +168,20 @@ sourceFile:../lib/file0.ts
 4 >                     ...b: number[]
 5 >                                          
 6 >                                            ...b: number[]
-1->Emitted(33, 10) Source(2, 25) + SourceIndex(0)
-2 >Emitted(33, 20) Source(2, 39) + SourceIndex(0)
-3 >Emitted(33, 22) Source(2, 25) + SourceIndex(0)
-4 >Emitted(33, 43) Source(2, 39) + SourceIndex(0)
-5 >Emitted(33, 45) Source(2, 25) + SourceIndex(0)
-6 >Emitted(33, 49) Source(2, 39) + SourceIndex(0)
+1->Emitted(35, 10) Source(2, 25) + SourceIndex(0)
+2 >Emitted(35, 20) Source(2, 39) + SourceIndex(0)
+3 >Emitted(35, 22) Source(2, 25) + SourceIndex(0)
+4 >Emitted(35, 43) Source(2, 39) + SourceIndex(0)
+5 >Emitted(35, 45) Source(2, 25) + SourceIndex(0)
+6 >Emitted(35, 49) Source(2, 39) + SourceIndex(0)
 ---
 >>>        b[_i] = arguments[_i];
 1 >^^^^^^^^
 2 >        ^^^^^^^^^^^^^^^^^^^^^^
 1 >
 2 >        ...b: number[]
-1 >Emitted(34, 9) Source(2, 25) + SourceIndex(0)
-2 >Emitted(34, 31) Source(2, 39) + SourceIndex(0)
+1 >Emitted(36, 9) Source(2, 25) + SourceIndex(0)
+2 >Emitted(36, 31) Source(2, 39) + SourceIndex(0)
 ---
 >>>    }
 >>>}
@@ -186,8 +190,8 @@ sourceFile:../lib/file0.ts
 3 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >) { 
 2 >}
-1 >Emitted(36, 1) Source(2, 43) + SourceIndex(0)
-2 >Emitted(36, 2) Source(2, 44) + SourceIndex(0)
+1 >Emitted(38, 1) Source(2, 43) + SourceIndex(0)
+2 >Emitted(38, 2) Source(2, 44) + SourceIndex(0)
 ---
 >>>libfile0Spread.apply(void 0, __spread([10, 20, 30]));
 1->
@@ -214,17 +218,17 @@ sourceFile:../lib/file0.ts
 9 >                                               30
 10>                                                 ]
 11>                                                  );
-1->Emitted(37, 1) Source(3, 1) + SourceIndex(0)
-2 >Emitted(37, 15) Source(3, 15) + SourceIndex(0)
-3 >Emitted(37, 39) Source(3, 19) + SourceIndex(0)
-4 >Emitted(37, 40) Source(3, 20) + SourceIndex(0)
-5 >Emitted(37, 42) Source(3, 22) + SourceIndex(0)
-6 >Emitted(37, 44) Source(3, 24) + SourceIndex(0)
-7 >Emitted(37, 46) Source(3, 26) + SourceIndex(0)
-8 >Emitted(37, 48) Source(3, 28) + SourceIndex(0)
-9 >Emitted(37, 50) Source(3, 30) + SourceIndex(0)
-10>Emitted(37, 51) Source(3, 31) + SourceIndex(0)
-11>Emitted(37, 54) Source(3, 33) + SourceIndex(0)
+1->Emitted(39, 1) Source(3, 1) + SourceIndex(0)
+2 >Emitted(39, 15) Source(3, 15) + SourceIndex(0)
+3 >Emitted(39, 39) Source(3, 19) + SourceIndex(0)
+4 >Emitted(39, 40) Source(3, 20) + SourceIndex(0)
+5 >Emitted(39, 42) Source(3, 22) + SourceIndex(0)
+6 >Emitted(39, 44) Source(3, 24) + SourceIndex(0)
+7 >Emitted(39, 46) Source(3, 26) + SourceIndex(0)
+8 >Emitted(39, 48) Source(3, 28) + SourceIndex(0)
+9 >Emitted(39, 50) Source(3, 30) + SourceIndex(0)
+10>Emitted(39, 51) Source(3, 31) + SourceIndex(0)
+11>Emitted(39, 54) Source(3, 33) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/app/module.js
@@ -247,12 +251,12 @@ sourceFile:../lib/file1.ts
 4 >              = 
 5 >                10
 6 >                  ;
-1->Emitted(41, 5) Source(1, 14) + SourceIndex(1)
-2 >Emitted(41, 13) Source(1, 14) + SourceIndex(1)
-3 >Emitted(41, 14) Source(1, 15) + SourceIndex(1)
-4 >Emitted(41, 17) Source(1, 18) + SourceIndex(1)
-5 >Emitted(41, 19) Source(1, 20) + SourceIndex(1)
-6 >Emitted(41, 20) Source(1, 21) + SourceIndex(1)
+1->Emitted(43, 5) Source(1, 14) + SourceIndex(1)
+2 >Emitted(43, 13) Source(1, 14) + SourceIndex(1)
+3 >Emitted(43, 14) Source(1, 15) + SourceIndex(1)
+4 >Emitted(43, 17) Source(1, 18) + SourceIndex(1)
+5 >Emitted(43, 19) Source(1, 20) + SourceIndex(1)
+6 >Emitted(43, 20) Source(1, 21) + SourceIndex(1)
 ---
 >>>    function forlibfile1Rest() { }
 1->^^^^
@@ -265,11 +269,11 @@ sourceFile:../lib/file1.ts
 3 >             forlibfile1Rest
 4 >                            () { 
 5 >                                 }
-1->Emitted(42, 5) Source(1, 21) + SourceIndex(1)
-2 >Emitted(42, 14) Source(1, 30) + SourceIndex(1)
-3 >Emitted(42, 29) Source(1, 45) + SourceIndex(1)
-4 >Emitted(42, 34) Source(1, 50) + SourceIndex(1)
-5 >Emitted(42, 35) Source(1, 51) + SourceIndex(1)
+1->Emitted(44, 5) Source(1, 21) + SourceIndex(1)
+2 >Emitted(44, 14) Source(1, 30) + SourceIndex(1)
+3 >Emitted(44, 29) Source(1, 45) + SourceIndex(1)
+4 >Emitted(44, 34) Source(1, 50) + SourceIndex(1)
+5 >Emitted(44, 35) Source(1, 51) + SourceIndex(1)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/app/module.js
@@ -292,12 +296,12 @@ sourceFile:../lib/file2.ts
 4 >              = 
 5 >                20
 6 >                  ;
-1 >Emitted(47, 5) Source(1, 14) + SourceIndex(2)
-2 >Emitted(47, 13) Source(1, 14) + SourceIndex(2)
-3 >Emitted(47, 14) Source(1, 15) + SourceIndex(2)
-4 >Emitted(47, 17) Source(1, 18) + SourceIndex(2)
-5 >Emitted(47, 19) Source(1, 20) + SourceIndex(2)
-6 >Emitted(47, 20) Source(1, 21) + SourceIndex(2)
+1 >Emitted(49, 5) Source(1, 14) + SourceIndex(2)
+2 >Emitted(49, 13) Source(1, 14) + SourceIndex(2)
+3 >Emitted(49, 14) Source(1, 15) + SourceIndex(2)
+4 >Emitted(49, 17) Source(1, 18) + SourceIndex(2)
+5 >Emitted(49, 19) Source(1, 20) + SourceIndex(2)
+6 >Emitted(49, 20) Source(1, 21) + SourceIndex(2)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/app/module.js
@@ -318,12 +322,12 @@ sourceFile:../lib/global.ts
 4 >                = 
 5 >                  10
 6 >                    ;
-1 >Emitted(49, 1) Source(1, 1) + SourceIndex(3)
-2 >Emitted(49, 5) Source(1, 7) + SourceIndex(3)
-3 >Emitted(49, 16) Source(1, 18) + SourceIndex(3)
-4 >Emitted(49, 19) Source(1, 21) + SourceIndex(3)
-5 >Emitted(49, 21) Source(1, 23) + SourceIndex(3)
-6 >Emitted(49, 22) Source(1, 24) + SourceIndex(3)
+1 >Emitted(51, 1) Source(1, 1) + SourceIndex(3)
+2 >Emitted(51, 5) Source(1, 7) + SourceIndex(3)
+3 >Emitted(51, 16) Source(1, 18) + SourceIndex(3)
+4 >Emitted(51, 19) Source(1, 21) + SourceIndex(3)
+5 >Emitted(51, 21) Source(1, 23) + SourceIndex(3)
+6 >Emitted(51, 22) Source(1, 24) + SourceIndex(3)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/app/module.js
@@ -346,12 +350,12 @@ sourceFile:file3.ts
 4 >              = 
 5 >                30
 6 >                  ;
-1->Emitted(53, 5) Source(1, 14) + SourceIndex(4)
-2 >Emitted(53, 13) Source(1, 14) + SourceIndex(4)
-3 >Emitted(53, 14) Source(1, 15) + SourceIndex(4)
-4 >Emitted(53, 17) Source(1, 18) + SourceIndex(4)
-5 >Emitted(53, 19) Source(1, 20) + SourceIndex(4)
-6 >Emitted(53, 20) Source(1, 21) + SourceIndex(4)
+1->Emitted(55, 5) Source(1, 14) + SourceIndex(4)
+2 >Emitted(55, 13) Source(1, 14) + SourceIndex(4)
+3 >Emitted(55, 14) Source(1, 15) + SourceIndex(4)
+4 >Emitted(55, 17) Source(1, 18) + SourceIndex(4)
+5 >Emitted(55, 19) Source(1, 20) + SourceIndex(4)
+6 >Emitted(55, 20) Source(1, 21) + SourceIndex(4)
 ---
 >>>    function forappfile3Rest() {
 1->^^^^
@@ -362,9 +366,9 @@ sourceFile:file3.ts
   >import { x } from "file1";
 2 >    function 
 3 >             forappfile3Rest
-1->Emitted(54, 5) Source(2, 27) + SourceIndex(4)
-2 >Emitted(54, 14) Source(2, 36) + SourceIndex(4)
-3 >Emitted(54, 29) Source(2, 51) + SourceIndex(4)
+1->Emitted(56, 5) Source(2, 27) + SourceIndex(4)
+2 >Emitted(56, 14) Source(2, 36) + SourceIndex(4)
+3 >Emitted(56, 29) Source(2, 51) + SourceIndex(4)
 ---
 >>>        var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^^^^^
@@ -384,14 +388,14 @@ sourceFile:file3.ts
 6 >                                                   , 
 7 >                                                     ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                             ;
-1->Emitted(55, 9) Source(3, 1) + SourceIndex(4)
-2 >Emitted(55, 13) Source(3, 7) + SourceIndex(4)
-3 >Emitted(55, 42) Source(3, 48) + SourceIndex(4)
-4 >Emitted(55, 44) Source(3, 9) + SourceIndex(4)
-5 >Emitted(55, 52) Source(3, 10) + SourceIndex(4)
-6 >Emitted(55, 54) Source(3, 12) + SourceIndex(4)
-7 >Emitted(55, 78) Source(3, 48) + SourceIndex(4)
-8 >Emitted(55, 79) Source(3, 49) + SourceIndex(4)
+1->Emitted(57, 9) Source(3, 1) + SourceIndex(4)
+2 >Emitted(57, 13) Source(3, 7) + SourceIndex(4)
+3 >Emitted(57, 42) Source(3, 48) + SourceIndex(4)
+4 >Emitted(57, 44) Source(3, 9) + SourceIndex(4)
+5 >Emitted(57, 52) Source(3, 10) + SourceIndex(4)
+6 >Emitted(57, 54) Source(3, 12) + SourceIndex(4)
+7 >Emitted(57, 78) Source(3, 48) + SourceIndex(4)
+8 >Emitted(57, 79) Source(3, 49) + SourceIndex(4)
 ---
 >>>    }
 1 >^^^^
@@ -399,8 +403,8 @@ sourceFile:file3.ts
 1 >
   >
 2 >    }
-1 >Emitted(56, 5) Source(4, 1) + SourceIndex(4)
-2 >Emitted(56, 6) Source(4, 2) + SourceIndex(4)
+1 >Emitted(58, 5) Source(4, 1) + SourceIndex(4)
+2 >Emitted(58, 6) Source(4, 2) + SourceIndex(4)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/app/module.js
@@ -421,12 +425,12 @@ sourceFile:file4.ts
 4 >          = 
 5 >            30
 6 >              ;
-1 >Emitted(58, 1) Source(1, 1) + SourceIndex(5)
-2 >Emitted(58, 5) Source(1, 7) + SourceIndex(5)
-3 >Emitted(58, 10) Source(1, 12) + SourceIndex(5)
-4 >Emitted(58, 13) Source(1, 15) + SourceIndex(5)
-5 >Emitted(58, 15) Source(1, 17) + SourceIndex(5)
-6 >Emitted(58, 16) Source(1, 18) + SourceIndex(5)
+1 >Emitted(60, 1) Source(1, 1) + SourceIndex(5)
+2 >Emitted(60, 5) Source(1, 7) + SourceIndex(5)
+3 >Emitted(60, 10) Source(1, 12) + SourceIndex(5)
+4 >Emitted(60, 13) Source(1, 15) + SourceIndex(5)
+5 >Emitted(60, 15) Source(1, 17) + SourceIndex(5)
+6 >Emitted(60, 16) Source(1, 18) + SourceIndex(5)
 ---
 >>>function appfile4Spread() {
 1->
@@ -436,9 +440,9 @@ sourceFile:file4.ts
   >
 2 >function 
 3 >         appfile4Spread
-1->Emitted(59, 1) Source(2, 1) + SourceIndex(5)
-2 >Emitted(59, 10) Source(2, 10) + SourceIndex(5)
-3 >Emitted(59, 24) Source(2, 24) + SourceIndex(5)
+1->Emitted(61, 1) Source(2, 1) + SourceIndex(5)
+2 >Emitted(61, 10) Source(2, 10) + SourceIndex(5)
+3 >Emitted(61, 24) Source(2, 24) + SourceIndex(5)
 ---
 >>>    var b = [];
 1 >^^^^
@@ -446,8 +450,8 @@ sourceFile:file4.ts
 3 >               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >(
 2 >    ...b: number[]
-1 >Emitted(60, 5) Source(2, 25) + SourceIndex(5)
-2 >Emitted(60, 16) Source(2, 39) + SourceIndex(5)
+1 >Emitted(62, 5) Source(2, 25) + SourceIndex(5)
+2 >Emitted(62, 16) Source(2, 39) + SourceIndex(5)
 ---
 >>>    for (var _i = 0; _i < arguments.length; _i++) {
 1->^^^^^^^^^
@@ -462,20 +466,20 @@ sourceFile:file4.ts
 4 >                     ...b: number[]
 5 >                                          
 6 >                                            ...b: number[]
-1->Emitted(61, 10) Source(2, 25) + SourceIndex(5)
-2 >Emitted(61, 20) Source(2, 39) + SourceIndex(5)
-3 >Emitted(61, 22) Source(2, 25) + SourceIndex(5)
-4 >Emitted(61, 43) Source(2, 39) + SourceIndex(5)
-5 >Emitted(61, 45) Source(2, 25) + SourceIndex(5)
-6 >Emitted(61, 49) Source(2, 39) + SourceIndex(5)
+1->Emitted(63, 10) Source(2, 25) + SourceIndex(5)
+2 >Emitted(63, 20) Source(2, 39) + SourceIndex(5)
+3 >Emitted(63, 22) Source(2, 25) + SourceIndex(5)
+4 >Emitted(63, 43) Source(2, 39) + SourceIndex(5)
+5 >Emitted(63, 45) Source(2, 25) + SourceIndex(5)
+6 >Emitted(63, 49) Source(2, 39) + SourceIndex(5)
 ---
 >>>        b[_i] = arguments[_i];
 1 >^^^^^^^^
 2 >        ^^^^^^^^^^^^^^^^^^^^^^
 1 >
 2 >        ...b: number[]
-1 >Emitted(62, 9) Source(2, 25) + SourceIndex(5)
-2 >Emitted(62, 31) Source(2, 39) + SourceIndex(5)
+1 >Emitted(64, 9) Source(2, 25) + SourceIndex(5)
+2 >Emitted(64, 31) Source(2, 39) + SourceIndex(5)
 ---
 >>>    }
 >>>}
@@ -484,8 +488,8 @@ sourceFile:file4.ts
 3 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >) { 
 2 >}
-1 >Emitted(64, 1) Source(2, 43) + SourceIndex(5)
-2 >Emitted(64, 2) Source(2, 44) + SourceIndex(5)
+1 >Emitted(66, 1) Source(2, 43) + SourceIndex(5)
+2 >Emitted(66, 2) Source(2, 44) + SourceIndex(5)
 ---
 >>>appfile4Spread.apply(void 0, __spread([10, 20, 30]));
 1->
@@ -511,17 +515,17 @@ sourceFile:file4.ts
 9 >                                               30
 10>                                                 ]
 11>                                                  );
-1->Emitted(65, 1) Source(3, 1) + SourceIndex(5)
-2 >Emitted(65, 15) Source(3, 15) + SourceIndex(5)
-3 >Emitted(65, 39) Source(3, 19) + SourceIndex(5)
-4 >Emitted(65, 40) Source(3, 20) + SourceIndex(5)
-5 >Emitted(65, 42) Source(3, 22) + SourceIndex(5)
-6 >Emitted(65, 44) Source(3, 24) + SourceIndex(5)
-7 >Emitted(65, 46) Source(3, 26) + SourceIndex(5)
-8 >Emitted(65, 48) Source(3, 28) + SourceIndex(5)
-9 >Emitted(65, 50) Source(3, 30) + SourceIndex(5)
-10>Emitted(65, 51) Source(3, 31) + SourceIndex(5)
-11>Emitted(65, 54) Source(3, 33) + SourceIndex(5)
+1->Emitted(67, 1) Source(3, 1) + SourceIndex(5)
+2 >Emitted(67, 15) Source(3, 15) + SourceIndex(5)
+3 >Emitted(67, 39) Source(3, 19) + SourceIndex(5)
+4 >Emitted(67, 40) Source(3, 20) + SourceIndex(5)
+5 >Emitted(67, 42) Source(3, 22) + SourceIndex(5)
+6 >Emitted(67, 44) Source(3, 24) + SourceIndex(5)
+7 >Emitted(67, 46) Source(3, 26) + SourceIndex(5)
+8 >Emitted(67, 48) Source(3, 28) + SourceIndex(5)
+9 >Emitted(67, 50) Source(3, 30) + SourceIndex(5)
+10>Emitted(67, 51) Source(3, 31) + SourceIndex(5)
+11>Emitted(67, 54) Source(3, 33) + SourceIndex(5)
 ---
 >>>//# sourceMappingURL=module.js.map
 
@@ -549,26 +553,26 @@ sourceFile:file4.ts
         },
         {
           "pos": 678,
-          "end": 1093,
+          "end": 1178,
           "kind": "emitHelpers",
           "data": "typescript:rest"
         },
         {
-          "pos": 1095,
-          "end": 1736,
+          "pos": 1180,
+          "end": 1821,
           "kind": "prepend",
           "data": "/src/lib/module.js",
           "texts": [
             {
-              "pos": 1095,
-              "end": 1736,
+              "pos": 1180,
+              "end": 1821,
               "kind": "text"
             }
           ]
         },
         {
-          "pos": 1736,
-          "end": 2254,
+          "pos": 1821,
+          "end": 2339,
           "kind": "text"
         }
       ],
@@ -634,20 +638,22 @@ var __spread = (this && this.__spread) || function () {
     return ar;
 };
 ----------------------------------------------------------------------
-emitHelpers: (678-1093):: typescript:rest
+emitHelpers: (678-1178):: typescript:rest
 var __rest = (this && this.__rest) || function (s, e) {
     var t = {};
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 ----------------------------------------------------------------------
-prepend: (1095-1736):: /src/lib/module.js texts:: 1
+prepend: (1180-1821):: /src/lib/module.js texts:: 1
 >>--------------------------------------------------------------------
-text: (1095-1736)
+text: (1180-1821)
 var myGlob = 20;
 function libfile0Spread() {
     var b = [];
@@ -670,7 +676,7 @@ define("file2", ["require", "exports"], function (require, exports) {
 var globalConst = 10;
 
 ----------------------------------------------------------------------
-text: (1736-2254)
+text: (1821-2339)
 define("file3", ["require", "exports"], function (require, exports) {
     "use strict";
     Object.defineProperty(exports, "__esModule", { value: true });

tests/baselines/reference/tsbuild/amdModulesWithOut/initial-Build/multiple-emitHelpers-in-all-projects.js

@@ -285,8 +285,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var myGlob = 20;
@@ -330,7 +332,7 @@ appfile4Spread.apply(void 0, __spread([10, 20, 30]));
 //# sourceMappingURL=module.js.map
 
 //// [/src/app/module.js.map]
-{"version":3,"file":"module.js","sourceRoot":"","sources":["../lib/file0.ts","../lib/file1.ts","../lib/file2.ts","../lib/global.ts","file3.ts","file4.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,IAAM,MAAM,GAAG,EAAE,CAAC;AAClB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE;;;;ICFnB,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,SAAS,eAAe;QAC5C,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;IAChD,CAAC;;;;;ICFY,QAAA,CAAC,GAAG,EAAE,CAAC;;ACApB,IAAM,WAAW,GAAG,EAAE,CAAC;;;;ICAV,QAAA,CAAC,GAAG,EAAE,CAAC;IACM,SAAS,eAAe;QAClD,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;IAChD,CAAC;;ACHD,IAAM,KAAK,GAAG,EAAE,CAAC;AACjB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE"}
+{"version":3,"file":"module.js","sourceRoot":"","sources":["../lib/file0.ts","../lib/file1.ts","../lib/file2.ts","../lib/global.ts","file3.ts","file4.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,IAAM,MAAM,GAAG,EAAE,CAAC;AAClB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE;;;;ICFnB,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,SAAS,eAAe;QAC5C,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;IAChD,CAAC;;;;;ICFY,QAAA,CAAC,GAAG,EAAE,CAAC;;ACApB,IAAM,WAAW,GAAG,EAAE,CAAC;;;;ICAV,QAAA,CAAC,GAAG,EAAE,CAAC;IACM,SAAS,eAAe;QAClD,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;IAChD,CAAC;;ACHD,IAAM,KAAK,GAAG,EAAE,CAAC;AACjB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE"}
 
 //// [/src/app/module.js.map.baseline.txt]
 ===================================================================
@@ -368,8 +370,10 @@ sourceFile:../lib/file0.ts
 >>>    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
 >>>        t[p] = s[p];
 >>>    if (s != null && typeof Object.getOwnPropertySymbols === "function")
->>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
->>>            t[p[i]] = s[p[i]];
+>>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+>>>            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+>>>                t[p[i]] = s[p[i]];
+>>>        }
 >>>    return t;
 >>>};
 >>>var myGlob = 20;
@@ -386,12 +390,12 @@ sourceFile:../lib/file0.ts
 4 >           = 
 5 >             20
 6 >               ;
-1 >Emitted(30, 1) Source(1, 1) + SourceIndex(0)
-2 >Emitted(30, 5) Source(1, 7) + SourceIndex(0)
-3 >Emitted(30, 11) Source(1, 13) + SourceIndex(0)
-4 >Emitted(30, 14) Source(1, 16) + SourceIndex(0)
-5 >Emitted(30, 16) Source(1, 18) + SourceIndex(0)
-6 >Emitted(30, 17) Source(1, 19) + SourceIndex(0)
+1 >Emitted(32, 1) Source(1, 1) + SourceIndex(0)
+2 >Emitted(32, 5) Source(1, 7) + SourceIndex(0)
+3 >Emitted(32, 11) Source(1, 13) + SourceIndex(0)
+4 >Emitted(32, 14) Source(1, 16) + SourceIndex(0)
+5 >Emitted(32, 16) Source(1, 18) + SourceIndex(0)
+6 >Emitted(32, 17) Source(1, 19) + SourceIndex(0)
 ---
 >>>function libfile0Spread() {
 1->
@@ -401,9 +405,9 @@ sourceFile:../lib/file0.ts
   >
 2 >function 
 3 >         libfile0Spread
-1->Emitted(31, 1) Source(2, 1) + SourceIndex(0)
-2 >Emitted(31, 10) Source(2, 10) + SourceIndex(0)
-3 >Emitted(31, 24) Source(2, 24) + SourceIndex(0)
+1->Emitted(33, 1) Source(2, 1) + SourceIndex(0)
+2 >Emitted(33, 10) Source(2, 10) + SourceIndex(0)
+3 >Emitted(33, 24) Source(2, 24) + SourceIndex(0)
 ---
 >>>    var b = [];
 1 >^^^^
@@ -411,8 +415,8 @@ sourceFile:../lib/file0.ts
 3 >               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >(
 2 >    ...b: number[]
-1 >Emitted(32, 5) Source(2, 25) + SourceIndex(0)
-2 >Emitted(32, 16) Source(2, 39) + SourceIndex(0)
+1 >Emitted(34, 5) Source(2, 25) + SourceIndex(0)
+2 >Emitted(34, 16) Source(2, 39) + SourceIndex(0)
 ---
 >>>    for (var _i = 0; _i < arguments.length; _i++) {
 1->^^^^^^^^^
@@ -427,20 +431,20 @@ sourceFile:../lib/file0.ts
 4 >                     ...b: number[]
 5 >                                          
 6 >                                            ...b: number[]
-1->Emitted(33, 10) Source(2, 25) + SourceIndex(0)
-2 >Emitted(33, 20) Source(2, 39) + SourceIndex(0)
-3 >Emitted(33, 22) Source(2, 25) + SourceIndex(0)
-4 >Emitted(33, 43) Source(2, 39) + SourceIndex(0)
-5 >Emitted(33, 45) Source(2, 25) + SourceIndex(0)
-6 >Emitted(33, 49) Source(2, 39) + SourceIndex(0)
+1->Emitted(35, 10) Source(2, 25) + SourceIndex(0)
+2 >Emitted(35, 20) Source(2, 39) + SourceIndex(0)
+3 >Emitted(35, 22) Source(2, 25) + SourceIndex(0)
+4 >Emitted(35, 43) Source(2, 39) + SourceIndex(0)
+5 >Emitted(35, 45) Source(2, 25) + SourceIndex(0)
+6 >Emitted(35, 49) Source(2, 39) + SourceIndex(0)
 ---
 >>>        b[_i] = arguments[_i];
 1 >^^^^^^^^
 2 >        ^^^^^^^^^^^^^^^^^^^^^^
 1 >
 2 >        ...b: number[]
-1 >Emitted(34, 9) Source(2, 25) + SourceIndex(0)
-2 >Emitted(34, 31) Source(2, 39) + SourceIndex(0)
+1 >Emitted(36, 9) Source(2, 25) + SourceIndex(0)
+2 >Emitted(36, 31) Source(2, 39) + SourceIndex(0)
 ---
 >>>    }
 >>>}
@@ -449,8 +453,8 @@ sourceFile:../lib/file0.ts
 3 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >) { 
 2 >}
-1 >Emitted(36, 1) Source(2, 43) + SourceIndex(0)
-2 >Emitted(36, 2) Source(2, 44) + SourceIndex(0)
+1 >Emitted(38, 1) Source(2, 43) + SourceIndex(0)
+2 >Emitted(38, 2) Source(2, 44) + SourceIndex(0)
 ---
 >>>libfile0Spread.apply(void 0, __spread([10, 20, 30]));
 1->
@@ -477,17 +481,17 @@ sourceFile:../lib/file0.ts
 9 >                                               30
 10>                                                 ]
 11>                                                  );
-1->Emitted(37, 1) Source(3, 1) + SourceIndex(0)
-2 >Emitted(37, 15) Source(3, 15) + SourceIndex(0)
-3 >Emitted(37, 39) Source(3, 19) + SourceIndex(0)
-4 >Emitted(37, 40) Source(3, 20) + SourceIndex(0)
-5 >Emitted(37, 42) Source(3, 22) + SourceIndex(0)
-6 >Emitted(37, 44) Source(3, 24) + SourceIndex(0)
-7 >Emitted(37, 46) Source(3, 26) + SourceIndex(0)
-8 >Emitted(37, 48) Source(3, 28) + SourceIndex(0)
-9 >Emitted(37, 50) Source(3, 30) + SourceIndex(0)
-10>Emitted(37, 51) Source(3, 31) + SourceIndex(0)
-11>Emitted(37, 54) Source(3, 33) + SourceIndex(0)
+1->Emitted(39, 1) Source(3, 1) + SourceIndex(0)
+2 >Emitted(39, 15) Source(3, 15) + SourceIndex(0)
+3 >Emitted(39, 39) Source(3, 19) + SourceIndex(0)
+4 >Emitted(39, 40) Source(3, 20) + SourceIndex(0)
+5 >Emitted(39, 42) Source(3, 22) + SourceIndex(0)
+6 >Emitted(39, 44) Source(3, 24) + SourceIndex(0)
+7 >Emitted(39, 46) Source(3, 26) + SourceIndex(0)
+8 >Emitted(39, 48) Source(3, 28) + SourceIndex(0)
+9 >Emitted(39, 50) Source(3, 30) + SourceIndex(0)
+10>Emitted(39, 51) Source(3, 31) + SourceIndex(0)
+11>Emitted(39, 54) Source(3, 33) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/app/module.js
@@ -510,12 +514,12 @@ sourceFile:../lib/file1.ts
 4 >              = 
 5 >                10
 6 >                  ;
-1->Emitted(41, 5) Source(1, 14) + SourceIndex(1)
-2 >Emitted(41, 13) Source(1, 14) + SourceIndex(1)
-3 >Emitted(41, 14) Source(1, 15) + SourceIndex(1)
-4 >Emitted(41, 17) Source(1, 18) + SourceIndex(1)
-5 >Emitted(41, 19) Source(1, 20) + SourceIndex(1)
-6 >Emitted(41, 20) Source(1, 21) + SourceIndex(1)
+1->Emitted(43, 5) Source(1, 14) + SourceIndex(1)
+2 >Emitted(43, 13) Source(1, 14) + SourceIndex(1)
+3 >Emitted(43, 14) Source(1, 15) + SourceIndex(1)
+4 >Emitted(43, 17) Source(1, 18) + SourceIndex(1)
+5 >Emitted(43, 19) Source(1, 20) + SourceIndex(1)
+6 >Emitted(43, 20) Source(1, 21) + SourceIndex(1)
 ---
 >>>    function forlibfile1Rest() {
 1->^^^^
@@ -525,9 +529,9 @@ sourceFile:../lib/file1.ts
 1->
 2 >    function 
 3 >             forlibfile1Rest
-1->Emitted(42, 5) Source(1, 21) + SourceIndex(1)
-2 >Emitted(42, 14) Source(1, 30) + SourceIndex(1)
-3 >Emitted(42, 29) Source(1, 45) + SourceIndex(1)
+1->Emitted(44, 5) Source(1, 21) + SourceIndex(1)
+2 >Emitted(44, 14) Source(1, 30) + SourceIndex(1)
+3 >Emitted(44, 29) Source(1, 45) + SourceIndex(1)
 ---
 >>>        var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^^^^^
@@ -547,14 +551,14 @@ sourceFile:../lib/file1.ts
 6 >                                                   , 
 7 >                                                     ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                             ;
-1->Emitted(43, 9) Source(2, 1) + SourceIndex(1)
-2 >Emitted(43, 13) Source(2, 7) + SourceIndex(1)
-3 >Emitted(43, 42) Source(2, 48) + SourceIndex(1)
-4 >Emitted(43, 44) Source(2, 9) + SourceIndex(1)
-5 >Emitted(43, 52) Source(2, 10) + SourceIndex(1)
-6 >Emitted(43, 54) Source(2, 12) + SourceIndex(1)
-7 >Emitted(43, 78) Source(2, 48) + SourceIndex(1)
-8 >Emitted(43, 79) Source(2, 49) + SourceIndex(1)
+1->Emitted(45, 9) Source(2, 1) + SourceIndex(1)
+2 >Emitted(45, 13) Source(2, 7) + SourceIndex(1)
+3 >Emitted(45, 42) Source(2, 48) + SourceIndex(1)
+4 >Emitted(45, 44) Source(2, 9) + SourceIndex(1)
+5 >Emitted(45, 52) Source(2, 10) + SourceIndex(1)
+6 >Emitted(45, 54) Source(2, 12) + SourceIndex(1)
+7 >Emitted(45, 78) Source(2, 48) + SourceIndex(1)
+8 >Emitted(45, 79) Source(2, 49) + SourceIndex(1)
 ---
 >>>    }
 1 >^^^^
@@ -562,8 +566,8 @@ sourceFile:../lib/file1.ts
 1 >
   >
 2 >    }
-1 >Emitted(44, 5) Source(3, 1) + SourceIndex(1)
-2 >Emitted(44, 6) Source(3, 2) + SourceIndex(1)
+1 >Emitted(46, 5) Source(3, 1) + SourceIndex(1)
+2 >Emitted(46, 6) Source(3, 2) + SourceIndex(1)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/app/module.js
@@ -586,12 +590,12 @@ sourceFile:../lib/file2.ts
 4 >              = 
 5 >                20
 6 >                  ;
-1 >Emitted(49, 5) Source(1, 14) + SourceIndex(2)
-2 >Emitted(49, 13) Source(1, 14) + SourceIndex(2)
-3 >Emitted(49, 14) Source(1, 15) + SourceIndex(2)
-4 >Emitted(49, 17) Source(1, 18) + SourceIndex(2)
-5 >Emitted(49, 19) Source(1, 20) + SourceIndex(2)
-6 >Emitted(49, 20) Source(1, 21) + SourceIndex(2)
+1 >Emitted(51, 5) Source(1, 14) + SourceIndex(2)
+2 >Emitted(51, 13) Source(1, 14) + SourceIndex(2)
+3 >Emitted(51, 14) Source(1, 15) + SourceIndex(2)
+4 >Emitted(51, 17) Source(1, 18) + SourceIndex(2)
+5 >Emitted(51, 19) Source(1, 20) + SourceIndex(2)
+6 >Emitted(51, 20) Source(1, 21) + SourceIndex(2)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/app/module.js
@@ -612,12 +616,12 @@ sourceFile:../lib/global.ts
 4 >                = 
 5 >                  10
 6 >                    ;
-1 >Emitted(51, 1) Source(1, 1) + SourceIndex(3)
-2 >Emitted(51, 5) Source(1, 7) + SourceIndex(3)
-3 >Emitted(51, 16) Source(1, 18) + SourceIndex(3)
-4 >Emitted(51, 19) Source(1, 21) + SourceIndex(3)
-5 >Emitted(51, 21) Source(1, 23) + SourceIndex(3)
-6 >Emitted(51, 22) Source(1, 24) + SourceIndex(3)
+1 >Emitted(53, 1) Source(1, 1) + SourceIndex(3)
+2 >Emitted(53, 5) Source(1, 7) + SourceIndex(3)
+3 >Emitted(53, 16) Source(1, 18) + SourceIndex(3)
+4 >Emitted(53, 19) Source(1, 21) + SourceIndex(3)
+5 >Emitted(53, 21) Source(1, 23) + SourceIndex(3)
+6 >Emitted(53, 22) Source(1, 24) + SourceIndex(3)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/app/module.js
@@ -640,12 +644,12 @@ sourceFile:file3.ts
 4 >              = 
 5 >                30
 6 >                  ;
-1->Emitted(55, 5) Source(1, 14) + SourceIndex(4)
-2 >Emitted(55, 13) Source(1, 14) + SourceIndex(4)
-3 >Emitted(55, 14) Source(1, 15) + SourceIndex(4)
-4 >Emitted(55, 17) Source(1, 18) + SourceIndex(4)
-5 >Emitted(55, 19) Source(1, 20) + SourceIndex(4)
-6 >Emitted(55, 20) Source(1, 21) + SourceIndex(4)
+1->Emitted(57, 5) Source(1, 14) + SourceIndex(4)
+2 >Emitted(57, 13) Source(1, 14) + SourceIndex(4)
+3 >Emitted(57, 14) Source(1, 15) + SourceIndex(4)
+4 >Emitted(57, 17) Source(1, 18) + SourceIndex(4)
+5 >Emitted(57, 19) Source(1, 20) + SourceIndex(4)
+6 >Emitted(57, 20) Source(1, 21) + SourceIndex(4)
 ---
 >>>    function forappfile3Rest() {
 1->^^^^
@@ -656,9 +660,9 @@ sourceFile:file3.ts
   >import { x } from "file1";
 2 >    function 
 3 >             forappfile3Rest
-1->Emitted(56, 5) Source(2, 27) + SourceIndex(4)
-2 >Emitted(56, 14) Source(2, 36) + SourceIndex(4)
-3 >Emitted(56, 29) Source(2, 51) + SourceIndex(4)
+1->Emitted(58, 5) Source(2, 27) + SourceIndex(4)
+2 >Emitted(58, 14) Source(2, 36) + SourceIndex(4)
+3 >Emitted(58, 29) Source(2, 51) + SourceIndex(4)
 ---
 >>>        var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^^^^^
@@ -678,14 +682,14 @@ sourceFile:file3.ts
 6 >                                                   , 
 7 >                                                     ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                             ;
-1->Emitted(57, 9) Source(3, 1) + SourceIndex(4)
-2 >Emitted(57, 13) Source(3, 7) + SourceIndex(4)
-3 >Emitted(57, 42) Source(3, 48) + SourceIndex(4)
-4 >Emitted(57, 44) Source(3, 9) + SourceIndex(4)
-5 >Emitted(57, 52) Source(3, 10) + SourceIndex(4)
-6 >Emitted(57, 54) Source(3, 12) + SourceIndex(4)
-7 >Emitted(57, 78) Source(3, 48) + SourceIndex(4)
-8 >Emitted(57, 79) Source(3, 49) + SourceIndex(4)
+1->Emitted(59, 9) Source(3, 1) + SourceIndex(4)
+2 >Emitted(59, 13) Source(3, 7) + SourceIndex(4)
+3 >Emitted(59, 42) Source(3, 48) + SourceIndex(4)
+4 >Emitted(59, 44) Source(3, 9) + SourceIndex(4)
+5 >Emitted(59, 52) Source(3, 10) + SourceIndex(4)
+6 >Emitted(59, 54) Source(3, 12) + SourceIndex(4)
+7 >Emitted(59, 78) Source(3, 48) + SourceIndex(4)
+8 >Emitted(59, 79) Source(3, 49) + SourceIndex(4)
 ---
 >>>    }
 1 >^^^^
@@ -693,8 +697,8 @@ sourceFile:file3.ts
 1 >
   >
 2 >    }
-1 >Emitted(58, 5) Source(4, 1) + SourceIndex(4)
-2 >Emitted(58, 6) Source(4, 2) + SourceIndex(4)
+1 >Emitted(60, 5) Source(4, 1) + SourceIndex(4)
+2 >Emitted(60, 6) Source(4, 2) + SourceIndex(4)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/app/module.js
@@ -715,12 +719,12 @@ sourceFile:file4.ts
 4 >          = 
 5 >            30
 6 >              ;
-1 >Emitted(60, 1) Source(1, 1) + SourceIndex(5)
-2 >Emitted(60, 5) Source(1, 7) + SourceIndex(5)
-3 >Emitted(60, 10) Source(1, 12) + SourceIndex(5)
-4 >Emitted(60, 13) Source(1, 15) + SourceIndex(5)
-5 >Emitted(60, 15) Source(1, 17) + SourceIndex(5)
-6 >Emitted(60, 16) Source(1, 18) + SourceIndex(5)
+1 >Emitted(62, 1) Source(1, 1) + SourceIndex(5)
+2 >Emitted(62, 5) Source(1, 7) + SourceIndex(5)
+3 >Emitted(62, 10) Source(1, 12) + SourceIndex(5)
+4 >Emitted(62, 13) Source(1, 15) + SourceIndex(5)
+5 >Emitted(62, 15) Source(1, 17) + SourceIndex(5)
+6 >Emitted(62, 16) Source(1, 18) + SourceIndex(5)
 ---
 >>>function appfile4Spread() {
 1->
@@ -730,9 +734,9 @@ sourceFile:file4.ts
   >
 2 >function 
 3 >         appfile4Spread
-1->Emitted(61, 1) Source(2, 1) + SourceIndex(5)
-2 >Emitted(61, 10) Source(2, 10) + SourceIndex(5)
-3 >Emitted(61, 24) Source(2, 24) + SourceIndex(5)
+1->Emitted(63, 1) Source(2, 1) + SourceIndex(5)
+2 >Emitted(63, 10) Source(2, 10) + SourceIndex(5)
+3 >Emitted(63, 24) Source(2, 24) + SourceIndex(5)
 ---
 >>>    var b = [];
 1 >^^^^
@@ -740,8 +744,8 @@ sourceFile:file4.ts
 3 >               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >(
 2 >    ...b: number[]
-1 >Emitted(62, 5) Source(2, 25) + SourceIndex(5)
-2 >Emitted(62, 16) Source(2, 39) + SourceIndex(5)
+1 >Emitted(64, 5) Source(2, 25) + SourceIndex(5)
+2 >Emitted(64, 16) Source(2, 39) + SourceIndex(5)
 ---
 >>>    for (var _i = 0; _i < arguments.length; _i++) {
 1->^^^^^^^^^
@@ -756,20 +760,20 @@ sourceFile:file4.ts
 4 >                     ...b: number[]
 5 >                                          
 6 >                                            ...b: number[]
-1->Emitted(63, 10) Source(2, 25) + SourceIndex(5)
-2 >Emitted(63, 20) Source(2, 39) + SourceIndex(5)
-3 >Emitted(63, 22) Source(2, 25) + SourceIndex(5)
-4 >Emitted(63, 43) Source(2, 39) + SourceIndex(5)
-5 >Emitted(63, 45) Source(2, 25) + SourceIndex(5)
-6 >Emitted(63, 49) Source(2, 39) + SourceIndex(5)
+1->Emitted(65, 10) Source(2, 25) + SourceIndex(5)
+2 >Emitted(65, 20) Source(2, 39) + SourceIndex(5)
+3 >Emitted(65, 22) Source(2, 25) + SourceIndex(5)
+4 >Emitted(65, 43) Source(2, 39) + SourceIndex(5)
+5 >Emitted(65, 45) Source(2, 25) + SourceIndex(5)
+6 >Emitted(65, 49) Source(2, 39) + SourceIndex(5)
 ---
 >>>        b[_i] = arguments[_i];
 1 >^^^^^^^^
 2 >        ^^^^^^^^^^^^^^^^^^^^^^
 1 >
 2 >        ...b: number[]
-1 >Emitted(64, 9) Source(2, 25) + SourceIndex(5)
-2 >Emitted(64, 31) Source(2, 39) + SourceIndex(5)
+1 >Emitted(66, 9) Source(2, 25) + SourceIndex(5)
+2 >Emitted(66, 31) Source(2, 39) + SourceIndex(5)
 ---
 >>>    }
 >>>}
@@ -778,8 +782,8 @@ sourceFile:file4.ts
 3 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >) { 
 2 >}
-1 >Emitted(66, 1) Source(2, 43) + SourceIndex(5)
-2 >Emitted(66, 2) Source(2, 44) + SourceIndex(5)
+1 >Emitted(68, 1) Source(2, 43) + SourceIndex(5)
+2 >Emitted(68, 2) Source(2, 44) + SourceIndex(5)
 ---
 >>>appfile4Spread.apply(void 0, __spread([10, 20, 30]));
 1->
@@ -805,17 +809,17 @@ sourceFile:file4.ts
 9 >                                               30
 10>                                                 ]
 11>                                                  );
-1->Emitted(67, 1) Source(3, 1) + SourceIndex(5)
-2 >Emitted(67, 15) Source(3, 15) + SourceIndex(5)
-3 >Emitted(67, 39) Source(3, 19) + SourceIndex(5)
-4 >Emitted(67, 40) Source(3, 20) + SourceIndex(5)
-5 >Emitted(67, 42) Source(3, 22) + SourceIndex(5)
-6 >Emitted(67, 44) Source(3, 24) + SourceIndex(5)
-7 >Emitted(67, 46) Source(3, 26) + SourceIndex(5)
-8 >Emitted(67, 48) Source(3, 28) + SourceIndex(5)
-9 >Emitted(67, 50) Source(3, 30) + SourceIndex(5)
-10>Emitted(67, 51) Source(3, 31) + SourceIndex(5)
-11>Emitted(67, 54) Source(3, 33) + SourceIndex(5)
+1->Emitted(69, 1) Source(3, 1) + SourceIndex(5)
+2 >Emitted(69, 15) Source(3, 15) + SourceIndex(5)
+3 >Emitted(69, 39) Source(3, 19) + SourceIndex(5)
+4 >Emitted(69, 40) Source(3, 20) + SourceIndex(5)
+5 >Emitted(69, 42) Source(3, 22) + SourceIndex(5)
+6 >Emitted(69, 44) Source(3, 24) + SourceIndex(5)
+7 >Emitted(69, 46) Source(3, 26) + SourceIndex(5)
+8 >Emitted(69, 48) Source(3, 28) + SourceIndex(5)
+9 >Emitted(69, 50) Source(3, 30) + SourceIndex(5)
+10>Emitted(69, 51) Source(3, 31) + SourceIndex(5)
+11>Emitted(69, 54) Source(3, 33) + SourceIndex(5)
 ---
 >>>//# sourceMappingURL=module.js.map
 
@@ -843,26 +847,26 @@ sourceFile:file4.ts
         },
         {
           "pos": 678,
-          "end": 1093,
+          "end": 1178,
           "kind": "emitHelpers",
           "data": "typescript:rest"
         },
         {
-          "pos": 1095,
-          "end": 1821,
+          "pos": 1180,
+          "end": 1906,
           "kind": "prepend",
           "data": "/src/lib/module.js",
           "texts": [
             {
-              "pos": 1095,
-              "end": 1821,
+              "pos": 1180,
+              "end": 1906,
               "kind": "text"
             }
           ]
         },
         {
-          "pos": 1821,
-          "end": 2339,
+          "pos": 1906,
+          "end": 2424,
           "kind": "text"
         }
       ],
@@ -928,20 +932,22 @@ var __spread = (this && this.__spread) || function () {
     return ar;
 };
 ----------------------------------------------------------------------
-emitHelpers: (678-1093):: typescript:rest
+emitHelpers: (678-1178):: typescript:rest
 var __rest = (this && this.__rest) || function (s, e) {
     var t = {};
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 ----------------------------------------------------------------------
-prepend: (1095-1821):: /src/lib/module.js texts:: 1
+prepend: (1180-1906):: /src/lib/module.js texts:: 1
 >>--------------------------------------------------------------------
-text: (1095-1821)
+text: (1180-1906)
 var myGlob = 20;
 function libfile0Spread() {
     var b = [];
@@ -966,7 +972,7 @@ define("file2", ["require", "exports"], function (require, exports) {
 var globalConst = 10;
 
 ----------------------------------------------------------------------
-text: (1821-2339)
+text: (1906-2424)
 define("file3", ["require", "exports"], function (require, exports) {
     "use strict";
     Object.defineProperty(exports, "__esModule", { value: true });
@@ -1227,8 +1233,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var myGlob = 20;
@@ -1256,7 +1264,7 @@ var globalConst = 10;
 //# sourceMappingURL=module.js.map
 
 //// [/src/lib/module.js.map]
-{"version":3,"file":"module.js","sourceRoot":"","sources":["file0.ts","file1.ts","file2.ts","global.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,IAAM,MAAM,GAAG,EAAE,CAAC;AAClB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE;;;;ICFnB,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,SAAS,eAAe;QAC5C,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;IAChD,CAAC;;;;;ICFY,QAAA,CAAC,GAAG,EAAE,CAAC;;ACApB,IAAM,WAAW,GAAG,EAAE,CAAC"}
+{"version":3,"file":"module.js","sourceRoot":"","sources":["file0.ts","file1.ts","file2.ts","global.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,IAAM,MAAM,GAAG,EAAE,CAAC;AAClB,SAAS,cAAc;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AAC3C,cAAc,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE;;;;ICFnB,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,SAAS,eAAe;QAC5C,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;IAChD,CAAC;;;;;ICFY,QAAA,CAAC,GAAG,EAAE,CAAC;;ACApB,IAAM,WAAW,GAAG,EAAE,CAAC"}
 
 //// [/src/lib/module.js.map.baseline.txt]
 ===================================================================
@@ -1294,8 +1302,10 @@ sourceFile:file0.ts
 >>>    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
 >>>        t[p] = s[p];
 >>>    if (s != null && typeof Object.getOwnPropertySymbols === "function")
->>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
->>>            t[p[i]] = s[p[i]];
+>>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+>>>            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+>>>                t[p[i]] = s[p[i]];
+>>>        }
 >>>    return t;
 >>>};
 >>>var myGlob = 20;
@@ -1312,12 +1322,12 @@ sourceFile:file0.ts
 4 >           = 
 5 >             20
 6 >               ;
-1 >Emitted(30, 1) Source(1, 1) + SourceIndex(0)
-2 >Emitted(30, 5) Source(1, 7) + SourceIndex(0)
-3 >Emitted(30, 11) Source(1, 13) + SourceIndex(0)
-4 >Emitted(30, 14) Source(1, 16) + SourceIndex(0)
-5 >Emitted(30, 16) Source(1, 18) + SourceIndex(0)
-6 >Emitted(30, 17) Source(1, 19) + SourceIndex(0)
+1 >Emitted(32, 1) Source(1, 1) + SourceIndex(0)
+2 >Emitted(32, 5) Source(1, 7) + SourceIndex(0)
+3 >Emitted(32, 11) Source(1, 13) + SourceIndex(0)
+4 >Emitted(32, 14) Source(1, 16) + SourceIndex(0)
+5 >Emitted(32, 16) Source(1, 18) + SourceIndex(0)
+6 >Emitted(32, 17) Source(1, 19) + SourceIndex(0)
 ---
 >>>function libfile0Spread() {
 1->
@@ -1327,9 +1337,9 @@ sourceFile:file0.ts
   >
 2 >function 
 3 >         libfile0Spread
-1->Emitted(31, 1) Source(2, 1) + SourceIndex(0)
-2 >Emitted(31, 10) Source(2, 10) + SourceIndex(0)
-3 >Emitted(31, 24) Source(2, 24) + SourceIndex(0)
+1->Emitted(33, 1) Source(2, 1) + SourceIndex(0)
+2 >Emitted(33, 10) Source(2, 10) + SourceIndex(0)
+3 >Emitted(33, 24) Source(2, 24) + SourceIndex(0)
 ---
 >>>    var b = [];
 1 >^^^^
@@ -1337,8 +1347,8 @@ sourceFile:file0.ts
 3 >               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >(
 2 >    ...b: number[]
-1 >Emitted(32, 5) Source(2, 25) + SourceIndex(0)
-2 >Emitted(32, 16) Source(2, 39) + SourceIndex(0)
+1 >Emitted(34, 5) Source(2, 25) + SourceIndex(0)
+2 >Emitted(34, 16) Source(2, 39) + SourceIndex(0)
 ---
 >>>    for (var _i = 0; _i < arguments.length; _i++) {
 1->^^^^^^^^^
@@ -1353,20 +1363,20 @@ sourceFile:file0.ts
 4 >                     ...b: number[]
 5 >                                          
 6 >                                            ...b: number[]
-1->Emitted(33, 10) Source(2, 25) + SourceIndex(0)
-2 >Emitted(33, 20) Source(2, 39) + SourceIndex(0)
-3 >Emitted(33, 22) Source(2, 25) + SourceIndex(0)
-4 >Emitted(33, 43) Source(2, 39) + SourceIndex(0)
-5 >Emitted(33, 45) Source(2, 25) + SourceIndex(0)
-6 >Emitted(33, 49) Source(2, 39) + SourceIndex(0)
+1->Emitted(35, 10) Source(2, 25) + SourceIndex(0)
+2 >Emitted(35, 20) Source(2, 39) + SourceIndex(0)
+3 >Emitted(35, 22) Source(2, 25) + SourceIndex(0)
+4 >Emitted(35, 43) Source(2, 39) + SourceIndex(0)
+5 >Emitted(35, 45) Source(2, 25) + SourceIndex(0)
+6 >Emitted(35, 49) Source(2, 39) + SourceIndex(0)
 ---
 >>>        b[_i] = arguments[_i];
 1 >^^^^^^^^
 2 >        ^^^^^^^^^^^^^^^^^^^^^^
 1 >
 2 >        ...b: number[]
-1 >Emitted(34, 9) Source(2, 25) + SourceIndex(0)
-2 >Emitted(34, 31) Source(2, 39) + SourceIndex(0)
+1 >Emitted(36, 9) Source(2, 25) + SourceIndex(0)
+2 >Emitted(36, 31) Source(2, 39) + SourceIndex(0)
 ---
 >>>    }
 >>>}
@@ -1375,8 +1385,8 @@ sourceFile:file0.ts
 3 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >) { 
 2 >}
-1 >Emitted(36, 1) Source(2, 43) + SourceIndex(0)
-2 >Emitted(36, 2) Source(2, 44) + SourceIndex(0)
+1 >Emitted(38, 1) Source(2, 43) + SourceIndex(0)
+2 >Emitted(38, 2) Source(2, 44) + SourceIndex(0)
 ---
 >>>libfile0Spread.apply(void 0, __spread([10, 20, 30]));
 1->
@@ -1403,17 +1413,17 @@ sourceFile:file0.ts
 9 >                                               30
 10>                                                 ]
 11>                                                  );
-1->Emitted(37, 1) Source(3, 1) + SourceIndex(0)
-2 >Emitted(37, 15) Source(3, 15) + SourceIndex(0)
-3 >Emitted(37, 39) Source(3, 19) + SourceIndex(0)
-4 >Emitted(37, 40) Source(3, 20) + SourceIndex(0)
-5 >Emitted(37, 42) Source(3, 22) + SourceIndex(0)
-6 >Emitted(37, 44) Source(3, 24) + SourceIndex(0)
-7 >Emitted(37, 46) Source(3, 26) + SourceIndex(0)
-8 >Emitted(37, 48) Source(3, 28) + SourceIndex(0)
-9 >Emitted(37, 50) Source(3, 30) + SourceIndex(0)
-10>Emitted(37, 51) Source(3, 31) + SourceIndex(0)
-11>Emitted(37, 54) Source(3, 33) + SourceIndex(0)
+1->Emitted(39, 1) Source(3, 1) + SourceIndex(0)
+2 >Emitted(39, 15) Source(3, 15) + SourceIndex(0)
+3 >Emitted(39, 39) Source(3, 19) + SourceIndex(0)
+4 >Emitted(39, 40) Source(3, 20) + SourceIndex(0)
+5 >Emitted(39, 42) Source(3, 22) + SourceIndex(0)
+6 >Emitted(39, 44) Source(3, 24) + SourceIndex(0)
+7 >Emitted(39, 46) Source(3, 26) + SourceIndex(0)
+8 >Emitted(39, 48) Source(3, 28) + SourceIndex(0)
+9 >Emitted(39, 50) Source(3, 30) + SourceIndex(0)
+10>Emitted(39, 51) Source(3, 31) + SourceIndex(0)
+11>Emitted(39, 54) Source(3, 33) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/lib/module.js
@@ -1436,12 +1446,12 @@ sourceFile:file1.ts
 4 >              = 
 5 >                10
 6 >                  ;
-1->Emitted(41, 5) Source(1, 14) + SourceIndex(1)
-2 >Emitted(41, 13) Source(1, 14) + SourceIndex(1)
-3 >Emitted(41, 14) Source(1, 15) + SourceIndex(1)
-4 >Emitted(41, 17) Source(1, 18) + SourceIndex(1)
-5 >Emitted(41, 19) Source(1, 20) + SourceIndex(1)
-6 >Emitted(41, 20) Source(1, 21) + SourceIndex(1)
+1->Emitted(43, 5) Source(1, 14) + SourceIndex(1)
+2 >Emitted(43, 13) Source(1, 14) + SourceIndex(1)
+3 >Emitted(43, 14) Source(1, 15) + SourceIndex(1)
+4 >Emitted(43, 17) Source(1, 18) + SourceIndex(1)
+5 >Emitted(43, 19) Source(1, 20) + SourceIndex(1)
+6 >Emitted(43, 20) Source(1, 21) + SourceIndex(1)
 ---
 >>>    function forlibfile1Rest() {
 1->^^^^
@@ -1451,9 +1461,9 @@ sourceFile:file1.ts
 1->
 2 >    function 
 3 >             forlibfile1Rest
-1->Emitted(42, 5) Source(1, 21) + SourceIndex(1)
-2 >Emitted(42, 14) Source(1, 30) + SourceIndex(1)
-3 >Emitted(42, 29) Source(1, 45) + SourceIndex(1)
+1->Emitted(44, 5) Source(1, 21) + SourceIndex(1)
+2 >Emitted(44, 14) Source(1, 30) + SourceIndex(1)
+3 >Emitted(44, 29) Source(1, 45) + SourceIndex(1)
 ---
 >>>        var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^^^^^
@@ -1473,14 +1483,14 @@ sourceFile:file1.ts
 6 >                                                   , 
 7 >                                                     ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                             ;
-1->Emitted(43, 9) Source(2, 1) + SourceIndex(1)
-2 >Emitted(43, 13) Source(2, 7) + SourceIndex(1)
-3 >Emitted(43, 42) Source(2, 48) + SourceIndex(1)
-4 >Emitted(43, 44) Source(2, 9) + SourceIndex(1)
-5 >Emitted(43, 52) Source(2, 10) + SourceIndex(1)
-6 >Emitted(43, 54) Source(2, 12) + SourceIndex(1)
-7 >Emitted(43, 78) Source(2, 48) + SourceIndex(1)
-8 >Emitted(43, 79) Source(2, 49) + SourceIndex(1)
+1->Emitted(45, 9) Source(2, 1) + SourceIndex(1)
+2 >Emitted(45, 13) Source(2, 7) + SourceIndex(1)
+3 >Emitted(45, 42) Source(2, 48) + SourceIndex(1)
+4 >Emitted(45, 44) Source(2, 9) + SourceIndex(1)
+5 >Emitted(45, 52) Source(2, 10) + SourceIndex(1)
+6 >Emitted(45, 54) Source(2, 12) + SourceIndex(1)
+7 >Emitted(45, 78) Source(2, 48) + SourceIndex(1)
+8 >Emitted(45, 79) Source(2, 49) + SourceIndex(1)
 ---
 >>>    }
 1 >^^^^
@@ -1488,8 +1498,8 @@ sourceFile:file1.ts
 1 >
   >
 2 >    }
-1 >Emitted(44, 5) Source(3, 1) + SourceIndex(1)
-2 >Emitted(44, 6) Source(3, 2) + SourceIndex(1)
+1 >Emitted(46, 5) Source(3, 1) + SourceIndex(1)
+2 >Emitted(46, 6) Source(3, 2) + SourceIndex(1)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/lib/module.js
@@ -1512,12 +1522,12 @@ sourceFile:file2.ts
 4 >              = 
 5 >                20
 6 >                  ;
-1 >Emitted(49, 5) Source(1, 14) + SourceIndex(2)
-2 >Emitted(49, 13) Source(1, 14) + SourceIndex(2)
-3 >Emitted(49, 14) Source(1, 15) + SourceIndex(2)
-4 >Emitted(49, 17) Source(1, 18) + SourceIndex(2)
-5 >Emitted(49, 19) Source(1, 20) + SourceIndex(2)
-6 >Emitted(49, 20) Source(1, 21) + SourceIndex(2)
+1 >Emitted(51, 5) Source(1, 14) + SourceIndex(2)
+2 >Emitted(51, 13) Source(1, 14) + SourceIndex(2)
+3 >Emitted(51, 14) Source(1, 15) + SourceIndex(2)
+4 >Emitted(51, 17) Source(1, 18) + SourceIndex(2)
+5 >Emitted(51, 19) Source(1, 20) + SourceIndex(2)
+6 >Emitted(51, 20) Source(1, 21) + SourceIndex(2)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/lib/module.js
@@ -1538,12 +1548,12 @@ sourceFile:global.ts
 4 >                = 
 5 >                  10
 6 >                    ;
-1 >Emitted(51, 1) Source(1, 1) + SourceIndex(3)
-2 >Emitted(51, 5) Source(1, 7) + SourceIndex(3)
-3 >Emitted(51, 16) Source(1, 18) + SourceIndex(3)
-4 >Emitted(51, 19) Source(1, 21) + SourceIndex(3)
-5 >Emitted(51, 21) Source(1, 23) + SourceIndex(3)
-6 >Emitted(51, 22) Source(1, 24) + SourceIndex(3)
+1 >Emitted(53, 1) Source(1, 1) + SourceIndex(3)
+2 >Emitted(53, 5) Source(1, 7) + SourceIndex(3)
+3 >Emitted(53, 16) Source(1, 18) + SourceIndex(3)
+4 >Emitted(53, 19) Source(1, 21) + SourceIndex(3)
+5 >Emitted(53, 21) Source(1, 23) + SourceIndex(3)
+6 >Emitted(53, 22) Source(1, 24) + SourceIndex(3)
 ---
 >>>//# sourceMappingURL=module.js.map
 
@@ -1573,13 +1583,13 @@ sourceFile:global.ts
         },
         {
           "pos": 678,
-          "end": 1093,
+          "end": 1178,
           "kind": "emitHelpers",
           "data": "typescript:rest"
         },
         {
-          "pos": 1095,
-          "end": 1821,
+          "pos": 1180,
+          "end": 1906,
           "kind": "text"
         }
       ],
@@ -1632,18 +1642,20 @@ var __spread = (this && this.__spread) || function () {
     return ar;
 };
 ----------------------------------------------------------------------
-emitHelpers: (678-1093):: typescript:rest
+emitHelpers: (678-1178):: typescript:rest
 var __rest = (this && this.__rest) || function (s, e) {
     var t = {};
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 ----------------------------------------------------------------------
-text: (1095-1821)
+text: (1180-1906)
 var myGlob = 20;
 function libfile0Spread() {
     var b = [];

tests/baselines/reference/tsbuild/outfile-concat/incremental-declaration-changes/emitHelpers-in-all-projects.js

@@ -168,8 +168,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var s = "Hola, world";
@@ -184,7 +186,7 @@ function f() {
 //# sourceMappingURL=first-output.js.map
 
 //// [/src/first/bin/first-output.js.map]
-{"version":3,"file":"first-output.js","sourceRoot":"","sources":["../first_PART1.ts","../first_part2.ts","../first_part3.ts"],"names":[],"mappings":";;;;;;;;;AAIA,IAAM,CAAC,GAAG,aAAa,CAAC;AAMxB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;ACbD,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}
+{"version":3,"file":"first-output.js","sourceRoot":"","sources":["../first_PART1.ts","../first_part2.ts","../first_part3.ts"],"names":[],"mappings":";;;;;;;;;;;AAIA,IAAM,CAAC,GAAG,aAAa,CAAC;AAMxB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;ACbD,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}
 
 //// [/src/first/bin/first-output.js.map.baseline.txt]
 ===================================================================
@@ -202,8 +204,10 @@ sourceFile:../first_PART1.ts
 >>>    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
 >>>        t[p] = s[p];
 >>>    if (s != null && typeof Object.getOwnPropertySymbols === "function")
->>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
->>>            t[p[i]] = s[p[i]];
+>>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+>>>            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+>>>                t[p[i]] = s[p[i]];
+>>>        }
 >>>    return t;
 >>>};
 >>>var s = "Hola, world";
@@ -223,12 +227,12 @@ sourceFile:../first_PART1.ts
 4 >      = 
 5 >        "Hola, world"
 6 >                     ;
-1 >Emitted(10, 1) Source(5, 1) + SourceIndex(0)
-2 >Emitted(10, 5) Source(5, 7) + SourceIndex(0)
-3 >Emitted(10, 6) Source(5, 8) + SourceIndex(0)
-4 >Emitted(10, 9) Source(5, 11) + SourceIndex(0)
-5 >Emitted(10, 22) Source(5, 24) + SourceIndex(0)
-6 >Emitted(10, 23) Source(5, 25) + SourceIndex(0)
+1 >Emitted(12, 1) Source(5, 1) + SourceIndex(0)
+2 >Emitted(12, 5) Source(5, 7) + SourceIndex(0)
+3 >Emitted(12, 6) Source(5, 8) + SourceIndex(0)
+4 >Emitted(12, 9) Source(5, 11) + SourceIndex(0)
+5 >Emitted(12, 22) Source(5, 24) + SourceIndex(0)
+6 >Emitted(12, 23) Source(5, 25) + SourceIndex(0)
 ---
 >>>console.log(s);
 1 >
@@ -254,14 +258,14 @@ sourceFile:../first_PART1.ts
 6 >            s
 7 >             )
 8 >              ;
-1 >Emitted(11, 1) Source(11, 1) + SourceIndex(0)
-2 >Emitted(11, 8) Source(11, 8) + SourceIndex(0)
-3 >Emitted(11, 9) Source(11, 9) + SourceIndex(0)
-4 >Emitted(11, 12) Source(11, 12) + SourceIndex(0)
-5 >Emitted(11, 13) Source(11, 13) + SourceIndex(0)
-6 >Emitted(11, 14) Source(11, 14) + SourceIndex(0)
-7 >Emitted(11, 15) Source(11, 15) + SourceIndex(0)
-8 >Emitted(11, 16) Source(11, 16) + SourceIndex(0)
+1 >Emitted(13, 1) Source(11, 1) + SourceIndex(0)
+2 >Emitted(13, 8) Source(11, 8) + SourceIndex(0)
+3 >Emitted(13, 9) Source(11, 9) + SourceIndex(0)
+4 >Emitted(13, 12) Source(11, 12) + SourceIndex(0)
+5 >Emitted(13, 13) Source(11, 13) + SourceIndex(0)
+6 >Emitted(13, 14) Source(11, 14) + SourceIndex(0)
+7 >Emitted(13, 15) Source(11, 15) + SourceIndex(0)
+8 >Emitted(13, 16) Source(11, 16) + SourceIndex(0)
 ---
 >>>function forfirstfirst_PART1Rest() {
 1->
@@ -272,9 +276,9 @@ sourceFile:../first_PART1.ts
   >
 2 >function 
 3 >         forfirstfirst_PART1Rest
-1->Emitted(12, 1) Source(12, 1) + SourceIndex(0)
-2 >Emitted(12, 10) Source(12, 10) + SourceIndex(0)
-3 >Emitted(12, 33) Source(12, 33) + SourceIndex(0)
+1->Emitted(14, 1) Source(12, 1) + SourceIndex(0)
+2 >Emitted(14, 10) Source(12, 10) + SourceIndex(0)
+3 >Emitted(14, 33) Source(12, 33) + SourceIndex(0)
 ---
 >>>    var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^
@@ -294,14 +298,14 @@ sourceFile:../first_PART1.ts
 6 >                                               , 
 7 >                                                 ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                         ;
-1->Emitted(13, 5) Source(13, 1) + SourceIndex(0)
-2 >Emitted(13, 9) Source(13, 7) + SourceIndex(0)
-3 >Emitted(13, 38) Source(13, 48) + SourceIndex(0)
-4 >Emitted(13, 40) Source(13, 9) + SourceIndex(0)
-5 >Emitted(13, 48) Source(13, 10) + SourceIndex(0)
-6 >Emitted(13, 50) Source(13, 12) + SourceIndex(0)
-7 >Emitted(13, 74) Source(13, 48) + SourceIndex(0)
-8 >Emitted(13, 75) Source(13, 49) + SourceIndex(0)
+1->Emitted(15, 5) Source(13, 1) + SourceIndex(0)
+2 >Emitted(15, 9) Source(13, 7) + SourceIndex(0)
+3 >Emitted(15, 38) Source(13, 48) + SourceIndex(0)
+4 >Emitted(15, 40) Source(13, 9) + SourceIndex(0)
+5 >Emitted(15, 48) Source(13, 10) + SourceIndex(0)
+6 >Emitted(15, 50) Source(13, 12) + SourceIndex(0)
+7 >Emitted(15, 74) Source(13, 48) + SourceIndex(0)
+8 >Emitted(15, 75) Source(13, 49) + SourceIndex(0)
 ---
 >>>}
 1 >
@@ -310,8 +314,8 @@ sourceFile:../first_PART1.ts
 1 >
   >
 2 >}
-1 >Emitted(14, 1) Source(14, 1) + SourceIndex(0)
-2 >Emitted(14, 2) Source(14, 2) + SourceIndex(0)
+1 >Emitted(16, 1) Source(14, 1) + SourceIndex(0)
+2 >Emitted(16, 2) Source(14, 2) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/first/bin/first-output.js
@@ -336,15 +340,15 @@ sourceFile:../first_part2.ts
 7 >             ()
 8 >               )
 9 >                ;
-1->Emitted(15, 1) Source(1, 1) + SourceIndex(1)
-2 >Emitted(15, 8) Source(1, 8) + SourceIndex(1)
-3 >Emitted(15, 9) Source(1, 9) + SourceIndex(1)
-4 >Emitted(15, 12) Source(1, 12) + SourceIndex(1)
-5 >Emitted(15, 13) Source(1, 13) + SourceIndex(1)
-6 >Emitted(15, 14) Source(1, 14) + SourceIndex(1)
-7 >Emitted(15, 16) Source(1, 16) + SourceIndex(1)
-8 >Emitted(15, 17) Source(1, 17) + SourceIndex(1)
-9 >Emitted(15, 18) Source(1, 18) + SourceIndex(1)
+1->Emitted(17, 1) Source(1, 1) + SourceIndex(1)
+2 >Emitted(17, 8) Source(1, 8) + SourceIndex(1)
+3 >Emitted(17, 9) Source(1, 9) + SourceIndex(1)
+4 >Emitted(17, 12) Source(1, 12) + SourceIndex(1)
+5 >Emitted(17, 13) Source(1, 13) + SourceIndex(1)
+6 >Emitted(17, 14) Source(1, 14) + SourceIndex(1)
+7 >Emitted(17, 16) Source(1, 16) + SourceIndex(1)
+8 >Emitted(17, 17) Source(1, 17) + SourceIndex(1)
+9 >Emitted(17, 18) Source(1, 18) + SourceIndex(1)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/first/bin/first-output.js
@@ -358,9 +362,9 @@ sourceFile:../first_part3.ts
 1 >
 2 >function 
 3 >         f
-1 >Emitted(16, 1) Source(1, 1) + SourceIndex(2)
-2 >Emitted(16, 10) Source(1, 10) + SourceIndex(2)
-3 >Emitted(16, 11) Source(1, 11) + SourceIndex(2)
+1 >Emitted(18, 1) Source(1, 1) + SourceIndex(2)
+2 >Emitted(18, 10) Source(1, 10) + SourceIndex(2)
+3 >Emitted(18, 11) Source(1, 11) + SourceIndex(2)
 ---
 >>>    return "JS does hoists";
 1->^^^^
@@ -372,10 +376,10 @@ sourceFile:../first_part3.ts
 2 >    return 
 3 >           "JS does hoists"
 4 >                           ;
-1->Emitted(17, 5) Source(2, 5) + SourceIndex(2)
-2 >Emitted(17, 12) Source(2, 12) + SourceIndex(2)
-3 >Emitted(17, 28) Source(2, 28) + SourceIndex(2)
-4 >Emitted(17, 29) Source(2, 29) + SourceIndex(2)
+1->Emitted(19, 5) Source(2, 5) + SourceIndex(2)
+2 >Emitted(19, 12) Source(2, 12) + SourceIndex(2)
+3 >Emitted(19, 28) Source(2, 28) + SourceIndex(2)
+4 >Emitted(19, 29) Source(2, 29) + SourceIndex(2)
 ---
 >>>}
 1 >
@@ -384,8 +388,8 @@ sourceFile:../first_part3.ts
 1 >
   >
 2 >}
-1 >Emitted(18, 1) Source(3, 1) + SourceIndex(2)
-2 >Emitted(18, 2) Source(3, 2) + SourceIndex(2)
+1 >Emitted(20, 1) Source(3, 1) + SourceIndex(2)
+2 >Emitted(20, 2) Source(3, 2) + SourceIndex(2)
 ---
 >>>//# sourceMappingURL=first-output.js.map
 
@@ -402,13 +406,13 @@ sourceFile:../first_part3.ts
       "sections": [
         {
           "pos": 0,
-          "end": 415,
+          "end": 500,
           "kind": "emitHelpers",
           "data": "typescript:rest"
         },
         {
-          "pos": 417,
-          "end": 643,
+          "pos": 502,
+          "end": 728,
           "kind": "text"
         }
       ],
@@ -435,18 +439,20 @@ sourceFile:../first_part3.ts
 ======================================================================
 File:: /src/first/bin/first-output.js
 ----------------------------------------------------------------------
-emitHelpers: (0-415):: typescript:rest
+emitHelpers: (0-500):: typescript:rest
 var __rest = (this && this.__rest) || function (s, e) {
     var t = {};
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 ----------------------------------------------------------------------
-text: (417-643)
+text: (502-728)
 var s = "Hola, world";
 console.log(s);
 function forfirstfirst_PART1Rest() {
@@ -817,8 +823,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var s = "Hola, world";
@@ -856,7 +864,7 @@ function forthirdthird_part1Rest() {
 //# sourceMappingURL=third-output.js.map
 
 //// [/src/third/thirdjs/output/third-output.js.map]
-{"version":3,"file":"third-output.js","sourceRoot":"","sources":["../../../first/first_PART1.ts","../../../first/first_part2.ts","../../../first/first_part3.ts","../../../second/second_part1.ts","../../../second/second_part2.ts","../../third_part1.ts"],"names":[],"mappings":";;;;;;;;;AAIA,IAAM,CAAC,GAAG,aAAa,CAAC;AAMxB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;ACbD,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC;ACED,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;AACD,SAAS,yBAAyB;IAClC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;ACbD;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC;ACJD,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC;AAChB,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC"}
+{"version":3,"file":"third-output.js","sourceRoot":"","sources":["../../../first/first_PART1.ts","../../../first/first_part2.ts","../../../first/first_part3.ts","../../../second/second_part1.ts","../../../second/second_part2.ts","../../third_part1.ts"],"names":[],"mappings":";;;;;;;;;;;AAIA,IAAM,CAAC,GAAG,aAAa,CAAC;AAMxB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;ACbD,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC;ACED,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;AACD,SAAS,yBAAyB;IAClC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;ACbD;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC;ACJD,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC;AAChB,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC"}
 
 //// [/src/third/thirdjs/output/third-output.js.map.baseline.txt]
 ===================================================================
@@ -874,8 +882,10 @@ sourceFile:../../../first/first_PART1.ts
 >>>    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
 >>>        t[p] = s[p];
 >>>    if (s != null && typeof Object.getOwnPropertySymbols === "function")
->>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
->>>            t[p[i]] = s[p[i]];
+>>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+>>>            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+>>>                t[p[i]] = s[p[i]];
+>>>        }
 >>>    return t;
 >>>};
 >>>var s = "Hola, world";
@@ -895,12 +905,12 @@ sourceFile:../../../first/first_PART1.ts
 4 >      = 
 5 >        "Hola, world"
 6 >                     ;
-1 >Emitted(10, 1) Source(5, 1) + SourceIndex(0)
-2 >Emitted(10, 5) Source(5, 7) + SourceIndex(0)
-3 >Emitted(10, 6) Source(5, 8) + SourceIndex(0)
-4 >Emitted(10, 9) Source(5, 11) + SourceIndex(0)
-5 >Emitted(10, 22) Source(5, 24) + SourceIndex(0)
-6 >Emitted(10, 23) Source(5, 25) + SourceIndex(0)
+1 >Emitted(12, 1) Source(5, 1) + SourceIndex(0)
+2 >Emitted(12, 5) Source(5, 7) + SourceIndex(0)
+3 >Emitted(12, 6) Source(5, 8) + SourceIndex(0)
+4 >Emitted(12, 9) Source(5, 11) + SourceIndex(0)
+5 >Emitted(12, 22) Source(5, 24) + SourceIndex(0)
+6 >Emitted(12, 23) Source(5, 25) + SourceIndex(0)
 ---
 >>>console.log(s);
 1 >
@@ -926,14 +936,14 @@ sourceFile:../../../first/first_PART1.ts
 6 >            s
 7 >             )
 8 >              ;
-1 >Emitted(11, 1) Source(11, 1) + SourceIndex(0)
-2 >Emitted(11, 8) Source(11, 8) + SourceIndex(0)
-3 >Emitted(11, 9) Source(11, 9) + SourceIndex(0)
-4 >Emitted(11, 12) Source(11, 12) + SourceIndex(0)
-5 >Emitted(11, 13) Source(11, 13) + SourceIndex(0)
-6 >Emitted(11, 14) Source(11, 14) + SourceIndex(0)
-7 >Emitted(11, 15) Source(11, 15) + SourceIndex(0)
-8 >Emitted(11, 16) Source(11, 16) + SourceIndex(0)
+1 >Emitted(13, 1) Source(11, 1) + SourceIndex(0)
+2 >Emitted(13, 8) Source(11, 8) + SourceIndex(0)
+3 >Emitted(13, 9) Source(11, 9) + SourceIndex(0)
+4 >Emitted(13, 12) Source(11, 12) + SourceIndex(0)
+5 >Emitted(13, 13) Source(11, 13) + SourceIndex(0)
+6 >Emitted(13, 14) Source(11, 14) + SourceIndex(0)
+7 >Emitted(13, 15) Source(11, 15) + SourceIndex(0)
+8 >Emitted(13, 16) Source(11, 16) + SourceIndex(0)
 ---
 >>>function forfirstfirst_PART1Rest() {
 1->
@@ -944,9 +954,9 @@ sourceFile:../../../first/first_PART1.ts
   >
 2 >function 
 3 >         forfirstfirst_PART1Rest
-1->Emitted(12, 1) Source(12, 1) + SourceIndex(0)
-2 >Emitted(12, 10) Source(12, 10) + SourceIndex(0)
-3 >Emitted(12, 33) Source(12, 33) + SourceIndex(0)
+1->Emitted(14, 1) Source(12, 1) + SourceIndex(0)
+2 >Emitted(14, 10) Source(12, 10) + SourceIndex(0)
+3 >Emitted(14, 33) Source(12, 33) + SourceIndex(0)
 ---
 >>>    var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^
@@ -966,14 +976,14 @@ sourceFile:../../../first/first_PART1.ts
 6 >                                               , 
 7 >                                                 ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                         ;
-1->Emitted(13, 5) Source(13, 1) + SourceIndex(0)
-2 >Emitted(13, 9) Source(13, 7) + SourceIndex(0)
-3 >Emitted(13, 38) Source(13, 48) + SourceIndex(0)
-4 >Emitted(13, 40) Source(13, 9) + SourceIndex(0)
-5 >Emitted(13, 48) Source(13, 10) + SourceIndex(0)
-6 >Emitted(13, 50) Source(13, 12) + SourceIndex(0)
-7 >Emitted(13, 74) Source(13, 48) + SourceIndex(0)
-8 >Emitted(13, 75) Source(13, 49) + SourceIndex(0)
+1->Emitted(15, 5) Source(13, 1) + SourceIndex(0)
+2 >Emitted(15, 9) Source(13, 7) + SourceIndex(0)
+3 >Emitted(15, 38) Source(13, 48) + SourceIndex(0)
+4 >Emitted(15, 40) Source(13, 9) + SourceIndex(0)
+5 >Emitted(15, 48) Source(13, 10) + SourceIndex(0)
+6 >Emitted(15, 50) Source(13, 12) + SourceIndex(0)
+7 >Emitted(15, 74) Source(13, 48) + SourceIndex(0)
+8 >Emitted(15, 75) Source(13, 49) + SourceIndex(0)
 ---
 >>>}
 1 >
@@ -982,8 +992,8 @@ sourceFile:../../../first/first_PART1.ts
 1 >
   >
 2 >}
-1 >Emitted(14, 1) Source(14, 1) + SourceIndex(0)
-2 >Emitted(14, 2) Source(14, 2) + SourceIndex(0)
+1 >Emitted(16, 1) Source(14, 1) + SourceIndex(0)
+2 >Emitted(16, 2) Source(14, 2) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -1008,15 +1018,15 @@ sourceFile:../../../first/first_part2.ts
 7 >             ()
 8 >               )
 9 >                ;
-1->Emitted(15, 1) Source(1, 1) + SourceIndex(1)
-2 >Emitted(15, 8) Source(1, 8) + SourceIndex(1)
-3 >Emitted(15, 9) Source(1, 9) + SourceIndex(1)
-4 >Emitted(15, 12) Source(1, 12) + SourceIndex(1)
-5 >Emitted(15, 13) Source(1, 13) + SourceIndex(1)
-6 >Emitted(15, 14) Source(1, 14) + SourceIndex(1)
-7 >Emitted(15, 16) Source(1, 16) + SourceIndex(1)
-8 >Emitted(15, 17) Source(1, 17) + SourceIndex(1)
-9 >Emitted(15, 18) Source(1, 18) + SourceIndex(1)
+1->Emitted(17, 1) Source(1, 1) + SourceIndex(1)
+2 >Emitted(17, 8) Source(1, 8) + SourceIndex(1)
+3 >Emitted(17, 9) Source(1, 9) + SourceIndex(1)
+4 >Emitted(17, 12) Source(1, 12) + SourceIndex(1)
+5 >Emitted(17, 13) Source(1, 13) + SourceIndex(1)
+6 >Emitted(17, 14) Source(1, 14) + SourceIndex(1)
+7 >Emitted(17, 16) Source(1, 16) + SourceIndex(1)
+8 >Emitted(17, 17) Source(1, 17) + SourceIndex(1)
+9 >Emitted(17, 18) Source(1, 18) + SourceIndex(1)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -1030,9 +1040,9 @@ sourceFile:../../../first/first_part3.ts
 1 >
 2 >function 
 3 >         f
-1 >Emitted(16, 1) Source(1, 1) + SourceIndex(2)
-2 >Emitted(16, 10) Source(1, 10) + SourceIndex(2)
-3 >Emitted(16, 11) Source(1, 11) + SourceIndex(2)
+1 >Emitted(18, 1) Source(1, 1) + SourceIndex(2)
+2 >Emitted(18, 10) Source(1, 10) + SourceIndex(2)
+3 >Emitted(18, 11) Source(1, 11) + SourceIndex(2)
 ---
 >>>    return "JS does hoists";
 1->^^^^
@@ -1044,10 +1054,10 @@ sourceFile:../../../first/first_part3.ts
 2 >    return 
 3 >           "JS does hoists"
 4 >                           ;
-1->Emitted(17, 5) Source(2, 5) + SourceIndex(2)
-2 >Emitted(17, 12) Source(2, 12) + SourceIndex(2)
-3 >Emitted(17, 28) Source(2, 28) + SourceIndex(2)
-4 >Emitted(17, 29) Source(2, 29) + SourceIndex(2)
+1->Emitted(19, 5) Source(2, 5) + SourceIndex(2)
+2 >Emitted(19, 12) Source(2, 12) + SourceIndex(2)
+3 >Emitted(19, 28) Source(2, 28) + SourceIndex(2)
+4 >Emitted(19, 29) Source(2, 29) + SourceIndex(2)
 ---
 >>>}
 1 >
@@ -1056,8 +1066,8 @@ sourceFile:../../../first/first_part3.ts
 1 >
   >
 2 >}
-1 >Emitted(18, 1) Source(3, 1) + SourceIndex(2)
-2 >Emitted(18, 2) Source(3, 2) + SourceIndex(2)
+1 >Emitted(20, 1) Source(3, 1) + SourceIndex(2)
+2 >Emitted(20, 2) Source(3, 2) + SourceIndex(2)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -1083,10 +1093,10 @@ sourceFile:../../../second/second_part1.ts
   >     
   >         f();
   >     }
-1->Emitted(19, 1) Source(5, 1) + SourceIndex(3)
-2 >Emitted(19, 5) Source(5, 11) + SourceIndex(3)
-3 >Emitted(19, 6) Source(5, 12) + SourceIndex(3)
-4 >Emitted(19, 7) Source(11, 2) + SourceIndex(3)
+1->Emitted(21, 1) Source(5, 1) + SourceIndex(3)
+2 >Emitted(21, 5) Source(5, 11) + SourceIndex(3)
+3 >Emitted(21, 6) Source(5, 12) + SourceIndex(3)
+4 >Emitted(21, 7) Source(11, 2) + SourceIndex(3)
 ---
 >>>(function (N) {
 1->
@@ -1096,9 +1106,9 @@ sourceFile:../../../second/second_part1.ts
 1->
 2 >namespace 
 3 >           N
-1->Emitted(20, 1) Source(5, 1) + SourceIndex(3)
-2 >Emitted(20, 12) Source(5, 11) + SourceIndex(3)
-3 >Emitted(20, 13) Source(5, 12) + SourceIndex(3)
+1->Emitted(22, 1) Source(5, 1) + SourceIndex(3)
+2 >Emitted(22, 12) Source(5, 11) + SourceIndex(3)
+3 >Emitted(22, 13) Source(5, 12) + SourceIndex(3)
 ---
 >>>    function f() {
 1->^^^^
@@ -1109,9 +1119,9 @@ sourceFile:../../../second/second_part1.ts
   >    
 2 >    function 
 3 >             f
-1->Emitted(21, 5) Source(6, 5) + SourceIndex(3)
-2 >Emitted(21, 14) Source(6, 14) + SourceIndex(3)
-3 >Emitted(21, 15) Source(6, 15) + SourceIndex(3)
+1->Emitted(23, 5) Source(6, 5) + SourceIndex(3)
+2 >Emitted(23, 14) Source(6, 14) + SourceIndex(3)
+3 >Emitted(23, 15) Source(6, 15) + SourceIndex(3)
 ---
 >>>        console.log('testing');
 1->^^^^^^^^
@@ -1131,14 +1141,14 @@ sourceFile:../../../second/second_part1.ts
 6 >                    'testing'
 7 >                             )
 8 >                              ;
-1->Emitted(22, 9) Source(7, 9) + SourceIndex(3)
-2 >Emitted(22, 16) Source(7, 16) + SourceIndex(3)
-3 >Emitted(22, 17) Source(7, 17) + SourceIndex(3)
-4 >Emitted(22, 20) Source(7, 20) + SourceIndex(3)
-5 >Emitted(22, 21) Source(7, 21) + SourceIndex(3)
-6 >Emitted(22, 30) Source(7, 30) + SourceIndex(3)
-7 >Emitted(22, 31) Source(7, 31) + SourceIndex(3)
-8 >Emitted(22, 32) Source(7, 32) + SourceIndex(3)
+1->Emitted(24, 9) Source(7, 9) + SourceIndex(3)
+2 >Emitted(24, 16) Source(7, 16) + SourceIndex(3)
+3 >Emitted(24, 17) Source(7, 17) + SourceIndex(3)
+4 >Emitted(24, 20) Source(7, 20) + SourceIndex(3)
+5 >Emitted(24, 21) Source(7, 21) + SourceIndex(3)
+6 >Emitted(24, 30) Source(7, 30) + SourceIndex(3)
+7 >Emitted(24, 31) Source(7, 31) + SourceIndex(3)
+8 >Emitted(24, 32) Source(7, 32) + SourceIndex(3)
 ---
 >>>    }
 1 >^^^^
@@ -1147,8 +1157,8 @@ sourceFile:../../../second/second_part1.ts
 1 >
   >    
 2 >    }
-1 >Emitted(23, 5) Source(8, 5) + SourceIndex(3)
-2 >Emitted(23, 6) Source(8, 6) + SourceIndex(3)
+1 >Emitted(25, 5) Source(8, 5) + SourceIndex(3)
+2 >Emitted(25, 6) Source(8, 6) + SourceIndex(3)
 ---
 >>>    f();
 1->^^^^
@@ -1162,10 +1172,10 @@ sourceFile:../../../second/second_part1.ts
 2 >    f
 3 >     ()
 4 >       ;
-1->Emitted(24, 5) Source(10, 5) + SourceIndex(3)
-2 >Emitted(24, 6) Source(10, 6) + SourceIndex(3)
-3 >Emitted(24, 8) Source(10, 8) + SourceIndex(3)
-4 >Emitted(24, 9) Source(10, 9) + SourceIndex(3)
+1->Emitted(26, 5) Source(10, 5) + SourceIndex(3)
+2 >Emitted(26, 6) Source(10, 6) + SourceIndex(3)
+3 >Emitted(26, 8) Source(10, 8) + SourceIndex(3)
+4 >Emitted(26, 9) Source(10, 9) + SourceIndex(3)
 ---
 >>>})(N || (N = {}));
 1->
@@ -1190,13 +1200,13 @@ sourceFile:../../../second/second_part1.ts
   >          
   >              f();
   >          }
-1->Emitted(25, 1) Source(11, 1) + SourceIndex(3)
-2 >Emitted(25, 2) Source(11, 2) + SourceIndex(3)
-3 >Emitted(25, 4) Source(5, 11) + SourceIndex(3)
-4 >Emitted(25, 5) Source(5, 12) + SourceIndex(3)
-5 >Emitted(25, 10) Source(5, 11) + SourceIndex(3)
-6 >Emitted(25, 11) Source(5, 12) + SourceIndex(3)
-7 >Emitted(25, 19) Source(11, 2) + SourceIndex(3)
+1->Emitted(27, 1) Source(11, 1) + SourceIndex(3)
+2 >Emitted(27, 2) Source(11, 2) + SourceIndex(3)
+3 >Emitted(27, 4) Source(5, 11) + SourceIndex(3)
+4 >Emitted(27, 5) Source(5, 12) + SourceIndex(3)
+5 >Emitted(27, 10) Source(5, 11) + SourceIndex(3)
+6 >Emitted(27, 11) Source(5, 12) + SourceIndex(3)
+7 >Emitted(27, 19) Source(11, 2) + SourceIndex(3)
 ---
 >>>function forsecondsecond_part1Rest() {
 1->
@@ -1207,9 +1217,9 @@ sourceFile:../../../second/second_part1.ts
   >
 2 >function 
 3 >         forsecondsecond_part1Rest
-1->Emitted(26, 1) Source(12, 1) + SourceIndex(3)
-2 >Emitted(26, 10) Source(12, 10) + SourceIndex(3)
-3 >Emitted(26, 35) Source(12, 35) + SourceIndex(3)
+1->Emitted(28, 1) Source(12, 1) + SourceIndex(3)
+2 >Emitted(28, 10) Source(12, 10) + SourceIndex(3)
+3 >Emitted(28, 35) Source(12, 35) + SourceIndex(3)
 ---
 >>>    var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^
@@ -1229,14 +1239,14 @@ sourceFile:../../../second/second_part1.ts
 6 >                                               , 
 7 >                                                 ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                         ;
-1->Emitted(27, 5) Source(13, 1) + SourceIndex(3)
-2 >Emitted(27, 9) Source(13, 7) + SourceIndex(3)
-3 >Emitted(27, 38) Source(13, 48) + SourceIndex(3)
-4 >Emitted(27, 40) Source(13, 9) + SourceIndex(3)
-5 >Emitted(27, 48) Source(13, 10) + SourceIndex(3)
-6 >Emitted(27, 50) Source(13, 12) + SourceIndex(3)
-7 >Emitted(27, 74) Source(13, 48) + SourceIndex(3)
-8 >Emitted(27, 75) Source(13, 49) + SourceIndex(3)
+1->Emitted(29, 5) Source(13, 1) + SourceIndex(3)
+2 >Emitted(29, 9) Source(13, 7) + SourceIndex(3)
+3 >Emitted(29, 38) Source(13, 48) + SourceIndex(3)
+4 >Emitted(29, 40) Source(13, 9) + SourceIndex(3)
+5 >Emitted(29, 48) Source(13, 10) + SourceIndex(3)
+6 >Emitted(29, 50) Source(13, 12) + SourceIndex(3)
+7 >Emitted(29, 74) Source(13, 48) + SourceIndex(3)
+8 >Emitted(29, 75) Source(13, 49) + SourceIndex(3)
 ---
 >>>}
 1 >
@@ -1245,8 +1255,8 @@ sourceFile:../../../second/second_part1.ts
 1 >
   >
 2 >}
-1 >Emitted(28, 1) Source(14, 1) + SourceIndex(3)
-2 >Emitted(28, 2) Source(14, 2) + SourceIndex(3)
+1 >Emitted(30, 1) Source(14, 1) + SourceIndex(3)
+2 >Emitted(30, 2) Source(14, 2) + SourceIndex(3)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -1256,13 +1266,13 @@ sourceFile:../../../second/second_part2.ts
 1->
 2 >^^^^^^^^^^^^^^^^^^^->
 1->
-1->Emitted(29, 1) Source(1, 1) + SourceIndex(4)
+1->Emitted(31, 1) Source(1, 1) + SourceIndex(4)
 ---
 >>>    function C() {
 1->^^^^
 2 >    ^^->
 1->
-1->Emitted(30, 5) Source(1, 1) + SourceIndex(4)
+1->Emitted(32, 5) Source(1, 1) + SourceIndex(4)
 ---
 >>>    }
 1->^^^^
@@ -1274,8 +1284,8 @@ sourceFile:../../../second/second_part2.ts
   >    }
   >
 2 >    }
-1->Emitted(31, 5) Source(5, 1) + SourceIndex(4)
-2 >Emitted(31, 6) Source(5, 2) + SourceIndex(4)
+1->Emitted(33, 5) Source(5, 1) + SourceIndex(4)
+2 >Emitted(33, 6) Source(5, 2) + SourceIndex(4)
 ---
 >>>    C.prototype.doSomething = function () {
 1->^^^^
@@ -1285,9 +1295,9 @@ sourceFile:../../../second/second_part2.ts
 1->
 2 >    doSomething
 3 >                           
-1->Emitted(32, 5) Source(2, 5) + SourceIndex(4)
-2 >Emitted(32, 28) Source(2, 16) + SourceIndex(4)
-3 >Emitted(32, 31) Source(2, 5) + SourceIndex(4)
+1->Emitted(34, 5) Source(2, 5) + SourceIndex(4)
+2 >Emitted(34, 28) Source(2, 16) + SourceIndex(4)
+3 >Emitted(34, 31) Source(2, 5) + SourceIndex(4)
 ---
 >>>        console.log("something got done");
 1->^^^^^^^^
@@ -1307,14 +1317,14 @@ sourceFile:../../../second/second_part2.ts
 6 >                    "something got done"
 7 >                                        )
 8 >                                         ;
-1->Emitted(33, 9) Source(3, 9) + SourceIndex(4)
-2 >Emitted(33, 16) Source(3, 16) + SourceIndex(4)
-3 >Emitted(33, 17) Source(3, 17) + SourceIndex(4)
-4 >Emitted(33, 20) Source(3, 20) + SourceIndex(4)
-5 >Emitted(33, 21) Source(3, 21) + SourceIndex(4)
-6 >Emitted(33, 41) Source(3, 41) + SourceIndex(4)
-7 >Emitted(33, 42) Source(3, 42) + SourceIndex(4)
-8 >Emitted(33, 43) Source(3, 43) + SourceIndex(4)
+1->Emitted(35, 9) Source(3, 9) + SourceIndex(4)
+2 >Emitted(35, 16) Source(3, 16) + SourceIndex(4)
+3 >Emitted(35, 17) Source(3, 17) + SourceIndex(4)
+4 >Emitted(35, 20) Source(3, 20) + SourceIndex(4)
+5 >Emitted(35, 21) Source(3, 21) + SourceIndex(4)
+6 >Emitted(35, 41) Source(3, 41) + SourceIndex(4)
+7 >Emitted(35, 42) Source(3, 42) + SourceIndex(4)
+8 >Emitted(35, 43) Source(3, 43) + SourceIndex(4)
 ---
 >>>    };
 1 >^^^^
@@ -1323,8 +1333,8 @@ sourceFile:../../../second/second_part2.ts
 1 >
   >    
 2 >    }
-1 >Emitted(34, 5) Source(4, 5) + SourceIndex(4)
-2 >Emitted(34, 6) Source(4, 6) + SourceIndex(4)
+1 >Emitted(36, 5) Source(4, 5) + SourceIndex(4)
+2 >Emitted(36, 6) Source(4, 6) + SourceIndex(4)
 ---
 >>>    return C;
 1->^^^^
@@ -1332,8 +1342,8 @@ sourceFile:../../../second/second_part2.ts
 1->
   >
 2 >    }
-1->Emitted(35, 5) Source(5, 1) + SourceIndex(4)
-2 >Emitted(35, 13) Source(5, 2) + SourceIndex(4)
+1->Emitted(37, 5) Source(5, 1) + SourceIndex(4)
+2 >Emitted(37, 13) Source(5, 2) + SourceIndex(4)
 ---
 >>>}());
 1 >
@@ -1349,10 +1359,10 @@ sourceFile:../../../second/second_part2.ts
   >         console.log("something got done");
   >     }
   > }
-1 >Emitted(36, 1) Source(5, 1) + SourceIndex(4)
-2 >Emitted(36, 2) Source(5, 2) + SourceIndex(4)
-3 >Emitted(36, 2) Source(1, 1) + SourceIndex(4)
-4 >Emitted(36, 6) Source(5, 2) + SourceIndex(4)
+1 >Emitted(38, 1) Source(5, 1) + SourceIndex(4)
+2 >Emitted(38, 2) Source(5, 2) + SourceIndex(4)
+3 >Emitted(38, 2) Source(1, 1) + SourceIndex(4)
+4 >Emitted(38, 6) Source(5, 2) + SourceIndex(4)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -1376,14 +1386,14 @@ sourceFile:../../third_part1.ts
 6 >            C
 7 >             ()
 8 >               ;
-1->Emitted(37, 1) Source(1, 1) + SourceIndex(5)
-2 >Emitted(37, 5) Source(1, 5) + SourceIndex(5)
-3 >Emitted(37, 6) Source(1, 6) + SourceIndex(5)
-4 >Emitted(37, 9) Source(1, 9) + SourceIndex(5)
-5 >Emitted(37, 13) Source(1, 13) + SourceIndex(5)
-6 >Emitted(37, 14) Source(1, 14) + SourceIndex(5)
-7 >Emitted(37, 16) Source(1, 16) + SourceIndex(5)
-8 >Emitted(37, 17) Source(1, 17) + SourceIndex(5)
+1->Emitted(39, 1) Source(1, 1) + SourceIndex(5)
+2 >Emitted(39, 5) Source(1, 5) + SourceIndex(5)
+3 >Emitted(39, 6) Source(1, 6) + SourceIndex(5)
+4 >Emitted(39, 9) Source(1, 9) + SourceIndex(5)
+5 >Emitted(39, 13) Source(1, 13) + SourceIndex(5)
+6 >Emitted(39, 14) Source(1, 14) + SourceIndex(5)
+7 >Emitted(39, 16) Source(1, 16) + SourceIndex(5)
+8 >Emitted(39, 17) Source(1, 17) + SourceIndex(5)
 ---
 >>>c.doSomething();
 1->
@@ -1400,12 +1410,12 @@ sourceFile:../../third_part1.ts
 4 >  doSomething
 5 >             ()
 6 >               ;
-1->Emitted(38, 1) Source(2, 1) + SourceIndex(5)
-2 >Emitted(38, 2) Source(2, 2) + SourceIndex(5)
-3 >Emitted(38, 3) Source(2, 3) + SourceIndex(5)
-4 >Emitted(38, 14) Source(2, 14) + SourceIndex(5)
-5 >Emitted(38, 16) Source(2, 16) + SourceIndex(5)
-6 >Emitted(38, 17) Source(2, 17) + SourceIndex(5)
+1->Emitted(40, 1) Source(2, 1) + SourceIndex(5)
+2 >Emitted(40, 2) Source(2, 2) + SourceIndex(5)
+3 >Emitted(40, 3) Source(2, 3) + SourceIndex(5)
+4 >Emitted(40, 14) Source(2, 14) + SourceIndex(5)
+5 >Emitted(40, 16) Source(2, 16) + SourceIndex(5)
+6 >Emitted(40, 17) Source(2, 17) + SourceIndex(5)
 ---
 >>>function forthirdthird_part1Rest() {
 1->
@@ -1416,9 +1426,9 @@ sourceFile:../../third_part1.ts
   >
 2 >function 
 3 >         forthirdthird_part1Rest
-1->Emitted(39, 1) Source(3, 1) + SourceIndex(5)
-2 >Emitted(39, 10) Source(3, 10) + SourceIndex(5)
-3 >Emitted(39, 33) Source(3, 33) + SourceIndex(5)
+1->Emitted(41, 1) Source(3, 1) + SourceIndex(5)
+2 >Emitted(41, 10) Source(3, 10) + SourceIndex(5)
+3 >Emitted(41, 33) Source(3, 33) + SourceIndex(5)
 ---
 >>>    var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^
@@ -1438,14 +1448,14 @@ sourceFile:../../third_part1.ts
 6 >                                               , 
 7 >                                                 ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                         ;
-1->Emitted(40, 5) Source(4, 1) + SourceIndex(5)
-2 >Emitted(40, 9) Source(4, 7) + SourceIndex(5)
-3 >Emitted(40, 38) Source(4, 48) + SourceIndex(5)
-4 >Emitted(40, 40) Source(4, 9) + SourceIndex(5)
-5 >Emitted(40, 48) Source(4, 10) + SourceIndex(5)
-6 >Emitted(40, 50) Source(4, 12) + SourceIndex(5)
-7 >Emitted(40, 74) Source(4, 48) + SourceIndex(5)
-8 >Emitted(40, 75) Source(4, 49) + SourceIndex(5)
+1->Emitted(42, 5) Source(4, 1) + SourceIndex(5)
+2 >Emitted(42, 9) Source(4, 7) + SourceIndex(5)
+3 >Emitted(42, 38) Source(4, 48) + SourceIndex(5)
+4 >Emitted(42, 40) Source(4, 9) + SourceIndex(5)
+5 >Emitted(42, 48) Source(4, 10) + SourceIndex(5)
+6 >Emitted(42, 50) Source(4, 12) + SourceIndex(5)
+7 >Emitted(42, 74) Source(4, 48) + SourceIndex(5)
+8 >Emitted(42, 75) Source(4, 49) + SourceIndex(5)
 ---
 >>>}
 1 >
@@ -1454,8 +1464,8 @@ sourceFile:../../third_part1.ts
 1 >
   >
 2 >}
-1 >Emitted(41, 1) Source(5, 1) + SourceIndex(5)
-2 >Emitted(41, 2) Source(5, 2) + SourceIndex(5)
+1 >Emitted(43, 1) Source(5, 1) + SourceIndex(5)
+2 >Emitted(43, 2) Source(5, 2) + SourceIndex(5)
 ---
 >>>//# sourceMappingURL=third-output.js.map
 
@@ -1470,39 +1480,39 @@ sourceFile:../../third_part1.ts
       "sections": [
         {
           "pos": 0,
-          "end": 415,
+          "end": 500,
           "kind": "emitHelpers",
           "data": "typescript:rest"
         },
         {
-          "pos": 417,
-          "end": 643,
+          "pos": 502,
+          "end": 728,
           "kind": "prepend",
           "data": "/src/first/bin/first-output.js",
           "texts": [
             {
-              "pos": 417,
-              "end": 643,
+              "pos": 502,
+              "end": 728,
               "kind": "text"
             }
           ]
         },
         {
-          "pos": 643,
-          "end": 1047,
+          "pos": 728,
+          "end": 1132,
           "kind": "prepend",
           "data": "/src/2/second-output.js",
           "texts": [
             {
-              "pos": 643,
-              "end": 1047,
+              "pos": 728,
+              "end": 1132,
               "kind": "text"
             }
           ]
         },
         {
-          "pos": 1047,
-          "end": 1200,
+          "pos": 1132,
+          "end": 1285,
           "kind": "text"
         }
       ],
@@ -1555,20 +1565,22 @@ sourceFile:../../third_part1.ts
 ======================================================================
 File:: /src/third/thirdjs/output/third-output.js
 ----------------------------------------------------------------------
-emitHelpers: (0-415):: typescript:rest
+emitHelpers: (0-500):: typescript:rest
 var __rest = (this && this.__rest) || function (s, e) {
     var t = {};
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 ----------------------------------------------------------------------
-prepend: (417-643):: /src/first/bin/first-output.js texts:: 1
+prepend: (502-728):: /src/first/bin/first-output.js texts:: 1
 >>--------------------------------------------------------------------
-text: (417-643)
+text: (502-728)
 var s = "Hola, world";
 console.log(s);
 function forfirstfirst_PART1Rest() {
@@ -1580,9 +1592,9 @@ function f() {
 }
 
 ----------------------------------------------------------------------
-prepend: (643-1047):: /src/2/second-output.js texts:: 1
+prepend: (728-1132):: /src/2/second-output.js texts:: 1
 >>--------------------------------------------------------------------
-text: (643-1047)
+text: (728-1132)
 var N;
 (function (N) {
     function f() {
@@ -1603,7 +1615,7 @@ var C = (function () {
 }());
 
 ----------------------------------------------------------------------
-text: (1047-1200)
+text: (1132-1285)
 var c = new C();
 c.doSomething();
 function forthirdthird_part1Rest() {

tests/baselines/reference/tsbuild/outfile-concat/incremental-declaration-doesnt-change/emitHelpers-in-all-projects.js

@@ -4,8 +4,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var s = "Hello, world";
@@ -21,7 +23,7 @@ function f() {
 //# sourceMappingURL=first-output.js.map
 
 //// [/src/first/bin/first-output.js.map]
-{"version":3,"file":"first-output.js","sourceRoot":"","sources":["../first_PART1.ts","../first_part2.ts","../first_part3.ts"],"names":[],"mappings":";;;;;;;;;AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;AAAA,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACbhB,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}
+{"version":3,"file":"first-output.js","sourceRoot":"","sources":["../first_PART1.ts","../first_part2.ts","../first_part3.ts"],"names":[],"mappings":";;;;;;;;;;;AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;AAAA,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACbhB,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}
 
 //// [/src/first/bin/first-output.js.map.baseline.txt]
 ===================================================================
@@ -39,8 +41,10 @@ sourceFile:../first_PART1.ts
 >>>    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
 >>>        t[p] = s[p];
 >>>    if (s != null && typeof Object.getOwnPropertySymbols === "function")
->>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
->>>            t[p[i]] = s[p[i]];
+>>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+>>>            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+>>>                t[p[i]] = s[p[i]];
+>>>        }
 >>>    return t;
 >>>};
 >>>var s = "Hello, world";
@@ -60,12 +64,12 @@ sourceFile:../first_PART1.ts
 4 >      = 
 5 >        "Hello, world"
 6 >                      ;
-1 >Emitted(10, 1) Source(5, 1) + SourceIndex(0)
-2 >Emitted(10, 5) Source(5, 7) + SourceIndex(0)
-3 >Emitted(10, 6) Source(5, 8) + SourceIndex(0)
-4 >Emitted(10, 9) Source(5, 11) + SourceIndex(0)
-5 >Emitted(10, 23) Source(5, 25) + SourceIndex(0)
-6 >Emitted(10, 24) Source(5, 26) + SourceIndex(0)
+1 >Emitted(12, 1) Source(5, 1) + SourceIndex(0)
+2 >Emitted(12, 5) Source(5, 7) + SourceIndex(0)
+3 >Emitted(12, 6) Source(5, 8) + SourceIndex(0)
+4 >Emitted(12, 9) Source(5, 11) + SourceIndex(0)
+5 >Emitted(12, 23) Source(5, 25) + SourceIndex(0)
+6 >Emitted(12, 24) Source(5, 26) + SourceIndex(0)
 ---
 >>>console.log(s);
 1 >
@@ -91,14 +95,14 @@ sourceFile:../first_PART1.ts
 6 >            s
 7 >             )
 8 >              ;
-1 >Emitted(11, 1) Source(11, 1) + SourceIndex(0)
-2 >Emitted(11, 8) Source(11, 8) + SourceIndex(0)
-3 >Emitted(11, 9) Source(11, 9) + SourceIndex(0)
-4 >Emitted(11, 12) Source(11, 12) + SourceIndex(0)
-5 >Emitted(11, 13) Source(11, 13) + SourceIndex(0)
-6 >Emitted(11, 14) Source(11, 14) + SourceIndex(0)
-7 >Emitted(11, 15) Source(11, 15) + SourceIndex(0)
-8 >Emitted(11, 16) Source(11, 16) + SourceIndex(0)
+1 >Emitted(13, 1) Source(11, 1) + SourceIndex(0)
+2 >Emitted(13, 8) Source(11, 8) + SourceIndex(0)
+3 >Emitted(13, 9) Source(11, 9) + SourceIndex(0)
+4 >Emitted(13, 12) Source(11, 12) + SourceIndex(0)
+5 >Emitted(13, 13) Source(11, 13) + SourceIndex(0)
+6 >Emitted(13, 14) Source(11, 14) + SourceIndex(0)
+7 >Emitted(13, 15) Source(11, 15) + SourceIndex(0)
+8 >Emitted(13, 16) Source(11, 16) + SourceIndex(0)
 ---
 >>>function forfirstfirst_PART1Rest() {
 1->
@@ -109,9 +113,9 @@ sourceFile:../first_PART1.ts
   >
 2 >function 
 3 >         forfirstfirst_PART1Rest
-1->Emitted(12, 1) Source(12, 1) + SourceIndex(0)
-2 >Emitted(12, 10) Source(12, 10) + SourceIndex(0)
-3 >Emitted(12, 33) Source(12, 33) + SourceIndex(0)
+1->Emitted(14, 1) Source(12, 1) + SourceIndex(0)
+2 >Emitted(14, 10) Source(12, 10) + SourceIndex(0)
+3 >Emitted(14, 33) Source(12, 33) + SourceIndex(0)
 ---
 >>>    var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^
@@ -131,14 +135,14 @@ sourceFile:../first_PART1.ts
 6 >                                               , 
 7 >                                                 ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                         ;
-1->Emitted(13, 5) Source(13, 1) + SourceIndex(0)
-2 >Emitted(13, 9) Source(13, 7) + SourceIndex(0)
-3 >Emitted(13, 38) Source(13, 48) + SourceIndex(0)
-4 >Emitted(13, 40) Source(13, 9) + SourceIndex(0)
-5 >Emitted(13, 48) Source(13, 10) + SourceIndex(0)
-6 >Emitted(13, 50) Source(13, 12) + SourceIndex(0)
-7 >Emitted(13, 74) Source(13, 48) + SourceIndex(0)
-8 >Emitted(13, 75) Source(13, 49) + SourceIndex(0)
+1->Emitted(15, 5) Source(13, 1) + SourceIndex(0)
+2 >Emitted(15, 9) Source(13, 7) + SourceIndex(0)
+3 >Emitted(15, 38) Source(13, 48) + SourceIndex(0)
+4 >Emitted(15, 40) Source(13, 9) + SourceIndex(0)
+5 >Emitted(15, 48) Source(13, 10) + SourceIndex(0)
+6 >Emitted(15, 50) Source(13, 12) + SourceIndex(0)
+7 >Emitted(15, 74) Source(13, 48) + SourceIndex(0)
+8 >Emitted(15, 75) Source(13, 49) + SourceIndex(0)
 ---
 >>>}
 1 >
@@ -147,8 +151,8 @@ sourceFile:../first_PART1.ts
 1 >
   >
 2 >}
-1 >Emitted(14, 1) Source(14, 1) + SourceIndex(0)
-2 >Emitted(14, 2) Source(14, 2) + SourceIndex(0)
+1 >Emitted(16, 1) Source(14, 1) + SourceIndex(0)
+2 >Emitted(16, 2) Source(14, 2) + SourceIndex(0)
 ---
 >>>console.log(s);
 1->
@@ -168,14 +172,14 @@ sourceFile:../first_PART1.ts
 6 >            s
 7 >             )
 8 >              ;
-1->Emitted(15, 1) Source(14, 2) + SourceIndex(0)
-2 >Emitted(15, 8) Source(14, 9) + SourceIndex(0)
-3 >Emitted(15, 9) Source(14, 10) + SourceIndex(0)
-4 >Emitted(15, 12) Source(14, 13) + SourceIndex(0)
-5 >Emitted(15, 13) Source(14, 14) + SourceIndex(0)
-6 >Emitted(15, 14) Source(14, 15) + SourceIndex(0)
-7 >Emitted(15, 15) Source(14, 16) + SourceIndex(0)
-8 >Emitted(15, 16) Source(14, 17) + SourceIndex(0)
+1->Emitted(17, 1) Source(14, 2) + SourceIndex(0)
+2 >Emitted(17, 8) Source(14, 9) + SourceIndex(0)
+3 >Emitted(17, 9) Source(14, 10) + SourceIndex(0)
+4 >Emitted(17, 12) Source(14, 13) + SourceIndex(0)
+5 >Emitted(17, 13) Source(14, 14) + SourceIndex(0)
+6 >Emitted(17, 14) Source(14, 15) + SourceIndex(0)
+7 >Emitted(17, 15) Source(14, 16) + SourceIndex(0)
+8 >Emitted(17, 16) Source(14, 17) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/first/bin/first-output.js
@@ -200,15 +204,15 @@ sourceFile:../first_part2.ts
 7 >             ()
 8 >               )
 9 >                ;
-1->Emitted(16, 1) Source(1, 1) + SourceIndex(1)
-2 >Emitted(16, 8) Source(1, 8) + SourceIndex(1)
-3 >Emitted(16, 9) Source(1, 9) + SourceIndex(1)
-4 >Emitted(16, 12) Source(1, 12) + SourceIndex(1)
-5 >Emitted(16, 13) Source(1, 13) + SourceIndex(1)
-6 >Emitted(16, 14) Source(1, 14) + SourceIndex(1)
-7 >Emitted(16, 16) Source(1, 16) + SourceIndex(1)
-8 >Emitted(16, 17) Source(1, 17) + SourceIndex(1)
-9 >Emitted(16, 18) Source(1, 18) + SourceIndex(1)
+1->Emitted(18, 1) Source(1, 1) + SourceIndex(1)
+2 >Emitted(18, 8) Source(1, 8) + SourceIndex(1)
+3 >Emitted(18, 9) Source(1, 9) + SourceIndex(1)
+4 >Emitted(18, 12) Source(1, 12) + SourceIndex(1)
+5 >Emitted(18, 13) Source(1, 13) + SourceIndex(1)
+6 >Emitted(18, 14) Source(1, 14) + SourceIndex(1)
+7 >Emitted(18, 16) Source(1, 16) + SourceIndex(1)
+8 >Emitted(18, 17) Source(1, 17) + SourceIndex(1)
+9 >Emitted(18, 18) Source(1, 18) + SourceIndex(1)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/first/bin/first-output.js
@@ -222,9 +226,9 @@ sourceFile:../first_part3.ts
 1 >
 2 >function 
 3 >         f
-1 >Emitted(17, 1) Source(1, 1) + SourceIndex(2)
-2 >Emitted(17, 10) Source(1, 10) + SourceIndex(2)
-3 >Emitted(17, 11) Source(1, 11) + SourceIndex(2)
+1 >Emitted(19, 1) Source(1, 1) + SourceIndex(2)
+2 >Emitted(19, 10) Source(1, 10) + SourceIndex(2)
+3 >Emitted(19, 11) Source(1, 11) + SourceIndex(2)
 ---
 >>>    return "JS does hoists";
 1->^^^^
@@ -236,10 +240,10 @@ sourceFile:../first_part3.ts
 2 >    return 
 3 >           "JS does hoists"
 4 >                           ;
-1->Emitted(18, 5) Source(2, 5) + SourceIndex(2)
-2 >Emitted(18, 12) Source(2, 12) + SourceIndex(2)
-3 >Emitted(18, 28) Source(2, 28) + SourceIndex(2)
-4 >Emitted(18, 29) Source(2, 29) + SourceIndex(2)
+1->Emitted(20, 5) Source(2, 5) + SourceIndex(2)
+2 >Emitted(20, 12) Source(2, 12) + SourceIndex(2)
+3 >Emitted(20, 28) Source(2, 28) + SourceIndex(2)
+4 >Emitted(20, 29) Source(2, 29) + SourceIndex(2)
 ---
 >>>}
 1 >
@@ -248,8 +252,8 @@ sourceFile:../first_part3.ts
 1 >
   >
 2 >}
-1 >Emitted(19, 1) Source(3, 1) + SourceIndex(2)
-2 >Emitted(19, 2) Source(3, 2) + SourceIndex(2)
+1 >Emitted(21, 1) Source(3, 1) + SourceIndex(2)
+2 >Emitted(21, 2) Source(3, 2) + SourceIndex(2)
 ---
 >>>//# sourceMappingURL=first-output.js.map
 
@@ -266,13 +270,13 @@ sourceFile:../first_part3.ts
       "sections": [
         {
           "pos": 0,
-          "end": 415,
+          "end": 500,
           "kind": "emitHelpers",
           "data": "typescript:rest"
         },
         {
-          "pos": 417,
-          "end": 661,
+          "pos": 502,
+          "end": 746,
           "kind": "text"
         }
       ],
@@ -299,18 +303,20 @@ sourceFile:../first_part3.ts
 ======================================================================
 File:: /src/first/bin/first-output.js
 ----------------------------------------------------------------------
-emitHelpers: (0-415):: typescript:rest
+emitHelpers: (0-500):: typescript:rest
 var __rest = (this && this.__rest) || function (s, e) {
     var t = {};
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 ----------------------------------------------------------------------
-text: (417-661)
+text: (502-746)
 var s = "Hello, world";
 console.log(s);
 function forfirstfirst_PART1Rest() {
@@ -361,8 +367,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var s = "Hello, world";
@@ -401,7 +409,7 @@ function forthirdthird_part1Rest() {
 //# sourceMappingURL=third-output.js.map
 
 //// [/src/third/thirdjs/output/third-output.js.map]
-{"version":3,"file":"third-output.js","sourceRoot":"","sources":["../../../first/first_PART1.ts","../../../first/first_part2.ts","../../../first/first_part3.ts","../../../second/second_part1.ts","../../../second/second_part2.ts","../../third_part1.ts"],"names":[],"mappings":";;;;;;;;;AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;AAAA,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACbhB,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC;ACED,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;AACD,SAAS,yBAAyB;IAClC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;ACbD;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC;ACJD,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC;AAChB,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC"}
+{"version":3,"file":"third-output.js","sourceRoot":"","sources":["../../../first/first_PART1.ts","../../../first/first_part2.ts","../../../first/first_part3.ts","../../../second/second_part1.ts","../../../second/second_part2.ts","../../third_part1.ts"],"names":[],"mappings":";;;;;;;;;;;AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;AAAA,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACbhB,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC;ACED,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;AACD,SAAS,yBAAyB;IAClC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;ACbD;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC;ACJD,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC;AAChB,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC"}
 
 //// [/src/third/thirdjs/output/third-output.js.map.baseline.txt]
 ===================================================================
@@ -419,8 +427,10 @@ sourceFile:../../../first/first_PART1.ts
 >>>    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
 >>>        t[p] = s[p];
 >>>    if (s != null && typeof Object.getOwnPropertySymbols === "function")
->>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
->>>            t[p[i]] = s[p[i]];
+>>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+>>>            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+>>>                t[p[i]] = s[p[i]];
+>>>        }
 >>>    return t;
 >>>};
 >>>var s = "Hello, world";
@@ -440,12 +450,12 @@ sourceFile:../../../first/first_PART1.ts
 4 >      = 
 5 >        "Hello, world"
 6 >                      ;
-1 >Emitted(10, 1) Source(5, 1) + SourceIndex(0)
-2 >Emitted(10, 5) Source(5, 7) + SourceIndex(0)
-3 >Emitted(10, 6) Source(5, 8) + SourceIndex(0)
-4 >Emitted(10, 9) Source(5, 11) + SourceIndex(0)
-5 >Emitted(10, 23) Source(5, 25) + SourceIndex(0)
-6 >Emitted(10, 24) Source(5, 26) + SourceIndex(0)
+1 >Emitted(12, 1) Source(5, 1) + SourceIndex(0)
+2 >Emitted(12, 5) Source(5, 7) + SourceIndex(0)
+3 >Emitted(12, 6) Source(5, 8) + SourceIndex(0)
+4 >Emitted(12, 9) Source(5, 11) + SourceIndex(0)
+5 >Emitted(12, 23) Source(5, 25) + SourceIndex(0)
+6 >Emitted(12, 24) Source(5, 26) + SourceIndex(0)
 ---
 >>>console.log(s);
 1 >
@@ -471,14 +481,14 @@ sourceFile:../../../first/first_PART1.ts
 6 >            s
 7 >             )
 8 >              ;
-1 >Emitted(11, 1) Source(11, 1) + SourceIndex(0)
-2 >Emitted(11, 8) Source(11, 8) + SourceIndex(0)
-3 >Emitted(11, 9) Source(11, 9) + SourceIndex(0)
-4 >Emitted(11, 12) Source(11, 12) + SourceIndex(0)
-5 >Emitted(11, 13) Source(11, 13) + SourceIndex(0)
-6 >Emitted(11, 14) Source(11, 14) + SourceIndex(0)
-7 >Emitted(11, 15) Source(11, 15) + SourceIndex(0)
-8 >Emitted(11, 16) Source(11, 16) + SourceIndex(0)
+1 >Emitted(13, 1) Source(11, 1) + SourceIndex(0)
+2 >Emitted(13, 8) Source(11, 8) + SourceIndex(0)
+3 >Emitted(13, 9) Source(11, 9) + SourceIndex(0)
+4 >Emitted(13, 12) Source(11, 12) + SourceIndex(0)
+5 >Emitted(13, 13) Source(11, 13) + SourceIndex(0)
+6 >Emitted(13, 14) Source(11, 14) + SourceIndex(0)
+7 >Emitted(13, 15) Source(11, 15) + SourceIndex(0)
+8 >Emitted(13, 16) Source(11, 16) + SourceIndex(0)
 ---
 >>>function forfirstfirst_PART1Rest() {
 1->
@@ -489,9 +499,9 @@ sourceFile:../../../first/first_PART1.ts
   >
 2 >function 
 3 >         forfirstfirst_PART1Rest
-1->Emitted(12, 1) Source(12, 1) + SourceIndex(0)
-2 >Emitted(12, 10) Source(12, 10) + SourceIndex(0)
-3 >Emitted(12, 33) Source(12, 33) + SourceIndex(0)
+1->Emitted(14, 1) Source(12, 1) + SourceIndex(0)
+2 >Emitted(14, 10) Source(12, 10) + SourceIndex(0)
+3 >Emitted(14, 33) Source(12, 33) + SourceIndex(0)
 ---
 >>>    var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^
@@ -511,14 +521,14 @@ sourceFile:../../../first/first_PART1.ts
 6 >                                               , 
 7 >                                                 ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                         ;
-1->Emitted(13, 5) Source(13, 1) + SourceIndex(0)
-2 >Emitted(13, 9) Source(13, 7) + SourceIndex(0)
-3 >Emitted(13, 38) Source(13, 48) + SourceIndex(0)
-4 >Emitted(13, 40) Source(13, 9) + SourceIndex(0)
-5 >Emitted(13, 48) Source(13, 10) + SourceIndex(0)
-6 >Emitted(13, 50) Source(13, 12) + SourceIndex(0)
-7 >Emitted(13, 74) Source(13, 48) + SourceIndex(0)
-8 >Emitted(13, 75) Source(13, 49) + SourceIndex(0)
+1->Emitted(15, 5) Source(13, 1) + SourceIndex(0)
+2 >Emitted(15, 9) Source(13, 7) + SourceIndex(0)
+3 >Emitted(15, 38) Source(13, 48) + SourceIndex(0)
+4 >Emitted(15, 40) Source(13, 9) + SourceIndex(0)
+5 >Emitted(15, 48) Source(13, 10) + SourceIndex(0)
+6 >Emitted(15, 50) Source(13, 12) + SourceIndex(0)
+7 >Emitted(15, 74) Source(13, 48) + SourceIndex(0)
+8 >Emitted(15, 75) Source(13, 49) + SourceIndex(0)
 ---
 >>>}
 1 >
@@ -527,8 +537,8 @@ sourceFile:../../../first/first_PART1.ts
 1 >
   >
 2 >}
-1 >Emitted(14, 1) Source(14, 1) + SourceIndex(0)
-2 >Emitted(14, 2) Source(14, 2) + SourceIndex(0)
+1 >Emitted(16, 1) Source(14, 1) + SourceIndex(0)
+2 >Emitted(16, 2) Source(14, 2) + SourceIndex(0)
 ---
 >>>console.log(s);
 1->
@@ -548,14 +558,14 @@ sourceFile:../../../first/first_PART1.ts
 6 >            s
 7 >             )
 8 >              ;
-1->Emitted(15, 1) Source(14, 2) + SourceIndex(0)
-2 >Emitted(15, 8) Source(14, 9) + SourceIndex(0)
-3 >Emitted(15, 9) Source(14, 10) + SourceIndex(0)
-4 >Emitted(15, 12) Source(14, 13) + SourceIndex(0)
-5 >Emitted(15, 13) Source(14, 14) + SourceIndex(0)
-6 >Emitted(15, 14) Source(14, 15) + SourceIndex(0)
-7 >Emitted(15, 15) Source(14, 16) + SourceIndex(0)
-8 >Emitted(15, 16) Source(14, 17) + SourceIndex(0)
+1->Emitted(17, 1) Source(14, 2) + SourceIndex(0)
+2 >Emitted(17, 8) Source(14, 9) + SourceIndex(0)
+3 >Emitted(17, 9) Source(14, 10) + SourceIndex(0)
+4 >Emitted(17, 12) Source(14, 13) + SourceIndex(0)
+5 >Emitted(17, 13) Source(14, 14) + SourceIndex(0)
+6 >Emitted(17, 14) Source(14, 15) + SourceIndex(0)
+7 >Emitted(17, 15) Source(14, 16) + SourceIndex(0)
+8 >Emitted(17, 16) Source(14, 17) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -580,15 +590,15 @@ sourceFile:../../../first/first_part2.ts
 7 >             ()
 8 >               )
 9 >                ;
-1->Emitted(16, 1) Source(1, 1) + SourceIndex(1)
-2 >Emitted(16, 8) Source(1, 8) + SourceIndex(1)
-3 >Emitted(16, 9) Source(1, 9) + SourceIndex(1)
-4 >Emitted(16, 12) Source(1, 12) + SourceIndex(1)
-5 >Emitted(16, 13) Source(1, 13) + SourceIndex(1)
-6 >Emitted(16, 14) Source(1, 14) + SourceIndex(1)
-7 >Emitted(16, 16) Source(1, 16) + SourceIndex(1)
-8 >Emitted(16, 17) Source(1, 17) + SourceIndex(1)
-9 >Emitted(16, 18) Source(1, 18) + SourceIndex(1)
+1->Emitted(18, 1) Source(1, 1) + SourceIndex(1)
+2 >Emitted(18, 8) Source(1, 8) + SourceIndex(1)
+3 >Emitted(18, 9) Source(1, 9) + SourceIndex(1)
+4 >Emitted(18, 12) Source(1, 12) + SourceIndex(1)
+5 >Emitted(18, 13) Source(1, 13) + SourceIndex(1)
+6 >Emitted(18, 14) Source(1, 14) + SourceIndex(1)
+7 >Emitted(18, 16) Source(1, 16) + SourceIndex(1)
+8 >Emitted(18, 17) Source(1, 17) + SourceIndex(1)
+9 >Emitted(18, 18) Source(1, 18) + SourceIndex(1)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -602,9 +612,9 @@ sourceFile:../../../first/first_part3.ts
 1 >
 2 >function 
 3 >         f
-1 >Emitted(17, 1) Source(1, 1) + SourceIndex(2)
-2 >Emitted(17, 10) Source(1, 10) + SourceIndex(2)
-3 >Emitted(17, 11) Source(1, 11) + SourceIndex(2)
+1 >Emitted(19, 1) Source(1, 1) + SourceIndex(2)
+2 >Emitted(19, 10) Source(1, 10) + SourceIndex(2)
+3 >Emitted(19, 11) Source(1, 11) + SourceIndex(2)
 ---
 >>>    return "JS does hoists";
 1->^^^^
@@ -616,10 +626,10 @@ sourceFile:../../../first/first_part3.ts
 2 >    return 
 3 >           "JS does hoists"
 4 >                           ;
-1->Emitted(18, 5) Source(2, 5) + SourceIndex(2)
-2 >Emitted(18, 12) Source(2, 12) + SourceIndex(2)
-3 >Emitted(18, 28) Source(2, 28) + SourceIndex(2)
-4 >Emitted(18, 29) Source(2, 29) + SourceIndex(2)
+1->Emitted(20, 5) Source(2, 5) + SourceIndex(2)
+2 >Emitted(20, 12) Source(2, 12) + SourceIndex(2)
+3 >Emitted(20, 28) Source(2, 28) + SourceIndex(2)
+4 >Emitted(20, 29) Source(2, 29) + SourceIndex(2)
 ---
 >>>}
 1 >
@@ -628,8 +638,8 @@ sourceFile:../../../first/first_part3.ts
 1 >
   >
 2 >}
-1 >Emitted(19, 1) Source(3, 1) + SourceIndex(2)
-2 >Emitted(19, 2) Source(3, 2) + SourceIndex(2)
+1 >Emitted(21, 1) Source(3, 1) + SourceIndex(2)
+2 >Emitted(21, 2) Source(3, 2) + SourceIndex(2)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -655,10 +665,10 @@ sourceFile:../../../second/second_part1.ts
   >     
   >         f();
   >     }
-1->Emitted(20, 1) Source(5, 1) + SourceIndex(3)
-2 >Emitted(20, 5) Source(5, 11) + SourceIndex(3)
-3 >Emitted(20, 6) Source(5, 12) + SourceIndex(3)
-4 >Emitted(20, 7) Source(11, 2) + SourceIndex(3)
+1->Emitted(22, 1) Source(5, 1) + SourceIndex(3)
+2 >Emitted(22, 5) Source(5, 11) + SourceIndex(3)
+3 >Emitted(22, 6) Source(5, 12) + SourceIndex(3)
+4 >Emitted(22, 7) Source(11, 2) + SourceIndex(3)
 ---
 >>>(function (N) {
 1->
@@ -668,9 +678,9 @@ sourceFile:../../../second/second_part1.ts
 1->
 2 >namespace 
 3 >           N
-1->Emitted(21, 1) Source(5, 1) + SourceIndex(3)
-2 >Emitted(21, 12) Source(5, 11) + SourceIndex(3)
-3 >Emitted(21, 13) Source(5, 12) + SourceIndex(3)
+1->Emitted(23, 1) Source(5, 1) + SourceIndex(3)
+2 >Emitted(23, 12) Source(5, 11) + SourceIndex(3)
+3 >Emitted(23, 13) Source(5, 12) + SourceIndex(3)
 ---
 >>>    function f() {
 1->^^^^
@@ -681,9 +691,9 @@ sourceFile:../../../second/second_part1.ts
   >    
 2 >    function 
 3 >             f
-1->Emitted(22, 5) Source(6, 5) + SourceIndex(3)
-2 >Emitted(22, 14) Source(6, 14) + SourceIndex(3)
-3 >Emitted(22, 15) Source(6, 15) + SourceIndex(3)
+1->Emitted(24, 5) Source(6, 5) + SourceIndex(3)
+2 >Emitted(24, 14) Source(6, 14) + SourceIndex(3)
+3 >Emitted(24, 15) Source(6, 15) + SourceIndex(3)
 ---
 >>>        console.log('testing');
 1->^^^^^^^^
@@ -703,14 +713,14 @@ sourceFile:../../../second/second_part1.ts
 6 >                    'testing'
 7 >                             )
 8 >                              ;
-1->Emitted(23, 9) Source(7, 9) + SourceIndex(3)
-2 >Emitted(23, 16) Source(7, 16) + SourceIndex(3)
-3 >Emitted(23, 17) Source(7, 17) + SourceIndex(3)
-4 >Emitted(23, 20) Source(7, 20) + SourceIndex(3)
-5 >Emitted(23, 21) Source(7, 21) + SourceIndex(3)
-6 >Emitted(23, 30) Source(7, 30) + SourceIndex(3)
-7 >Emitted(23, 31) Source(7, 31) + SourceIndex(3)
-8 >Emitted(23, 32) Source(7, 32) + SourceIndex(3)
+1->Emitted(25, 9) Source(7, 9) + SourceIndex(3)
+2 >Emitted(25, 16) Source(7, 16) + SourceIndex(3)
+3 >Emitted(25, 17) Source(7, 17) + SourceIndex(3)
+4 >Emitted(25, 20) Source(7, 20) + SourceIndex(3)
+5 >Emitted(25, 21) Source(7, 21) + SourceIndex(3)
+6 >Emitted(25, 30) Source(7, 30) + SourceIndex(3)
+7 >Emitted(25, 31) Source(7, 31) + SourceIndex(3)
+8 >Emitted(25, 32) Source(7, 32) + SourceIndex(3)
 ---
 >>>    }
 1 >^^^^
@@ -719,8 +729,8 @@ sourceFile:../../../second/second_part1.ts
 1 >
   >    
 2 >    }
-1 >Emitted(24, 5) Source(8, 5) + SourceIndex(3)
-2 >Emitted(24, 6) Source(8, 6) + SourceIndex(3)
+1 >Emitted(26, 5) Source(8, 5) + SourceIndex(3)
+2 >Emitted(26, 6) Source(8, 6) + SourceIndex(3)
 ---
 >>>    f();
 1->^^^^
@@ -734,10 +744,10 @@ sourceFile:../../../second/second_part1.ts
 2 >    f
 3 >     ()
 4 >       ;
-1->Emitted(25, 5) Source(10, 5) + SourceIndex(3)
-2 >Emitted(25, 6) Source(10, 6) + SourceIndex(3)
-3 >Emitted(25, 8) Source(10, 8) + SourceIndex(3)
-4 >Emitted(25, 9) Source(10, 9) + SourceIndex(3)
+1->Emitted(27, 5) Source(10, 5) + SourceIndex(3)
+2 >Emitted(27, 6) Source(10, 6) + SourceIndex(3)
+3 >Emitted(27, 8) Source(10, 8) + SourceIndex(3)
+4 >Emitted(27, 9) Source(10, 9) + SourceIndex(3)
 ---
 >>>})(N || (N = {}));
 1->
@@ -762,13 +772,13 @@ sourceFile:../../../second/second_part1.ts
   >          
   >              f();
   >          }
-1->Emitted(26, 1) Source(11, 1) + SourceIndex(3)
-2 >Emitted(26, 2) Source(11, 2) + SourceIndex(3)
-3 >Emitted(26, 4) Source(5, 11) + SourceIndex(3)
-4 >Emitted(26, 5) Source(5, 12) + SourceIndex(3)
-5 >Emitted(26, 10) Source(5, 11) + SourceIndex(3)
-6 >Emitted(26, 11) Source(5, 12) + SourceIndex(3)
-7 >Emitted(26, 19) Source(11, 2) + SourceIndex(3)
+1->Emitted(28, 1) Source(11, 1) + SourceIndex(3)
+2 >Emitted(28, 2) Source(11, 2) + SourceIndex(3)
+3 >Emitted(28, 4) Source(5, 11) + SourceIndex(3)
+4 >Emitted(28, 5) Source(5, 12) + SourceIndex(3)
+5 >Emitted(28, 10) Source(5, 11) + SourceIndex(3)
+6 >Emitted(28, 11) Source(5, 12) + SourceIndex(3)
+7 >Emitted(28, 19) Source(11, 2) + SourceIndex(3)
 ---
 >>>function forsecondsecond_part1Rest() {
 1->
@@ -779,9 +789,9 @@ sourceFile:../../../second/second_part1.ts
   >
 2 >function 
 3 >         forsecondsecond_part1Rest
-1->Emitted(27, 1) Source(12, 1) + SourceIndex(3)
-2 >Emitted(27, 10) Source(12, 10) + SourceIndex(3)
-3 >Emitted(27, 35) Source(12, 35) + SourceIndex(3)
+1->Emitted(29, 1) Source(12, 1) + SourceIndex(3)
+2 >Emitted(29, 10) Source(12, 10) + SourceIndex(3)
+3 >Emitted(29, 35) Source(12, 35) + SourceIndex(3)
 ---
 >>>    var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^
@@ -801,14 +811,14 @@ sourceFile:../../../second/second_part1.ts
 6 >                                               , 
 7 >                                                 ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                         ;
-1->Emitted(28, 5) Source(13, 1) + SourceIndex(3)
-2 >Emitted(28, 9) Source(13, 7) + SourceIndex(3)
-3 >Emitted(28, 38) Source(13, 48) + SourceIndex(3)
-4 >Emitted(28, 40) Source(13, 9) + SourceIndex(3)
-5 >Emitted(28, 48) Source(13, 10) + SourceIndex(3)
-6 >Emitted(28, 50) Source(13, 12) + SourceIndex(3)
-7 >Emitted(28, 74) Source(13, 48) + SourceIndex(3)
-8 >Emitted(28, 75) Source(13, 49) + SourceIndex(3)
+1->Emitted(30, 5) Source(13, 1) + SourceIndex(3)
+2 >Emitted(30, 9) Source(13, 7) + SourceIndex(3)
+3 >Emitted(30, 38) Source(13, 48) + SourceIndex(3)
+4 >Emitted(30, 40) Source(13, 9) + SourceIndex(3)
+5 >Emitted(30, 48) Source(13, 10) + SourceIndex(3)
+6 >Emitted(30, 50) Source(13, 12) + SourceIndex(3)
+7 >Emitted(30, 74) Source(13, 48) + SourceIndex(3)
+8 >Emitted(30, 75) Source(13, 49) + SourceIndex(3)
 ---
 >>>}
 1 >
@@ -817,8 +827,8 @@ sourceFile:../../../second/second_part1.ts
 1 >
   >
 2 >}
-1 >Emitted(29, 1) Source(14, 1) + SourceIndex(3)
-2 >Emitted(29, 2) Source(14, 2) + SourceIndex(3)
+1 >Emitted(31, 1) Source(14, 1) + SourceIndex(3)
+2 >Emitted(31, 2) Source(14, 2) + SourceIndex(3)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -828,13 +838,13 @@ sourceFile:../../../second/second_part2.ts
 1->
 2 >^^^^^^^^^^^^^^^^^^^->
 1->
-1->Emitted(30, 1) Source(1, 1) + SourceIndex(4)
+1->Emitted(32, 1) Source(1, 1) + SourceIndex(4)
 ---
 >>>    function C() {
 1->^^^^
 2 >    ^^->
 1->
-1->Emitted(31, 5) Source(1, 1) + SourceIndex(4)
+1->Emitted(33, 5) Source(1, 1) + SourceIndex(4)
 ---
 >>>    }
 1->^^^^
@@ -846,8 +856,8 @@ sourceFile:../../../second/second_part2.ts
   >    }
   >
 2 >    }
-1->Emitted(32, 5) Source(5, 1) + SourceIndex(4)
-2 >Emitted(32, 6) Source(5, 2) + SourceIndex(4)
+1->Emitted(34, 5) Source(5, 1) + SourceIndex(4)
+2 >Emitted(34, 6) Source(5, 2) + SourceIndex(4)
 ---
 >>>    C.prototype.doSomething = function () {
 1->^^^^
@@ -857,9 +867,9 @@ sourceFile:../../../second/second_part2.ts
 1->
 2 >    doSomething
 3 >                           
-1->Emitted(33, 5) Source(2, 5) + SourceIndex(4)
-2 >Emitted(33, 28) Source(2, 16) + SourceIndex(4)
-3 >Emitted(33, 31) Source(2, 5) + SourceIndex(4)
+1->Emitted(35, 5) Source(2, 5) + SourceIndex(4)
+2 >Emitted(35, 28) Source(2, 16) + SourceIndex(4)
+3 >Emitted(35, 31) Source(2, 5) + SourceIndex(4)
 ---
 >>>        console.log("something got done");
 1->^^^^^^^^
@@ -879,14 +889,14 @@ sourceFile:../../../second/second_part2.ts
 6 >                    "something got done"
 7 >                                        )
 8 >                                         ;
-1->Emitted(34, 9) Source(3, 9) + SourceIndex(4)
-2 >Emitted(34, 16) Source(3, 16) + SourceIndex(4)
-3 >Emitted(34, 17) Source(3, 17) + SourceIndex(4)
-4 >Emitted(34, 20) Source(3, 20) + SourceIndex(4)
-5 >Emitted(34, 21) Source(3, 21) + SourceIndex(4)
-6 >Emitted(34, 41) Source(3, 41) + SourceIndex(4)
-7 >Emitted(34, 42) Source(3, 42) + SourceIndex(4)
-8 >Emitted(34, 43) Source(3, 43) + SourceIndex(4)
+1->Emitted(36, 9) Source(3, 9) + SourceIndex(4)
+2 >Emitted(36, 16) Source(3, 16) + SourceIndex(4)
+3 >Emitted(36, 17) Source(3, 17) + SourceIndex(4)
+4 >Emitted(36, 20) Source(3, 20) + SourceIndex(4)
+5 >Emitted(36, 21) Source(3, 21) + SourceIndex(4)
+6 >Emitted(36, 41) Source(3, 41) + SourceIndex(4)
+7 >Emitted(36, 42) Source(3, 42) + SourceIndex(4)
+8 >Emitted(36, 43) Source(3, 43) + SourceIndex(4)
 ---
 >>>    };
 1 >^^^^
@@ -895,8 +905,8 @@ sourceFile:../../../second/second_part2.ts
 1 >
   >    
 2 >    }
-1 >Emitted(35, 5) Source(4, 5) + SourceIndex(4)
-2 >Emitted(35, 6) Source(4, 6) + SourceIndex(4)
+1 >Emitted(37, 5) Source(4, 5) + SourceIndex(4)
+2 >Emitted(37, 6) Source(4, 6) + SourceIndex(4)
 ---
 >>>    return C;
 1->^^^^
@@ -904,8 +914,8 @@ sourceFile:../../../second/second_part2.ts
 1->
   >
 2 >    }
-1->Emitted(36, 5) Source(5, 1) + SourceIndex(4)
-2 >Emitted(36, 13) Source(5, 2) + SourceIndex(4)
+1->Emitted(38, 5) Source(5, 1) + SourceIndex(4)
+2 >Emitted(38, 13) Source(5, 2) + SourceIndex(4)
 ---
 >>>}());
 1 >
@@ -921,10 +931,10 @@ sourceFile:../../../second/second_part2.ts
   >         console.log("something got done");
   >     }
   > }
-1 >Emitted(37, 1) Source(5, 1) + SourceIndex(4)
-2 >Emitted(37, 2) Source(5, 2) + SourceIndex(4)
-3 >Emitted(37, 2) Source(1, 1) + SourceIndex(4)
-4 >Emitted(37, 6) Source(5, 2) + SourceIndex(4)
+1 >Emitted(39, 1) Source(5, 1) + SourceIndex(4)
+2 >Emitted(39, 2) Source(5, 2) + SourceIndex(4)
+3 >Emitted(39, 2) Source(1, 1) + SourceIndex(4)
+4 >Emitted(39, 6) Source(5, 2) + SourceIndex(4)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -948,14 +958,14 @@ sourceFile:../../third_part1.ts
 6 >            C
 7 >             ()
 8 >               ;
-1->Emitted(38, 1) Source(1, 1) + SourceIndex(5)
-2 >Emitted(38, 5) Source(1, 5) + SourceIndex(5)
-3 >Emitted(38, 6) Source(1, 6) + SourceIndex(5)
-4 >Emitted(38, 9) Source(1, 9) + SourceIndex(5)
-5 >Emitted(38, 13) Source(1, 13) + SourceIndex(5)
-6 >Emitted(38, 14) Source(1, 14) + SourceIndex(5)
-7 >Emitted(38, 16) Source(1, 16) + SourceIndex(5)
-8 >Emitted(38, 17) Source(1, 17) + SourceIndex(5)
+1->Emitted(40, 1) Source(1, 1) + SourceIndex(5)
+2 >Emitted(40, 5) Source(1, 5) + SourceIndex(5)
+3 >Emitted(40, 6) Source(1, 6) + SourceIndex(5)
+4 >Emitted(40, 9) Source(1, 9) + SourceIndex(5)
+5 >Emitted(40, 13) Source(1, 13) + SourceIndex(5)
+6 >Emitted(40, 14) Source(1, 14) + SourceIndex(5)
+7 >Emitted(40, 16) Source(1, 16) + SourceIndex(5)
+8 >Emitted(40, 17) Source(1, 17) + SourceIndex(5)
 ---
 >>>c.doSomething();
 1->
@@ -972,12 +982,12 @@ sourceFile:../../third_part1.ts
 4 >  doSomething
 5 >             ()
 6 >               ;
-1->Emitted(39, 1) Source(2, 1) + SourceIndex(5)
-2 >Emitted(39, 2) Source(2, 2) + SourceIndex(5)
-3 >Emitted(39, 3) Source(2, 3) + SourceIndex(5)
-4 >Emitted(39, 14) Source(2, 14) + SourceIndex(5)
-5 >Emitted(39, 16) Source(2, 16) + SourceIndex(5)
-6 >Emitted(39, 17) Source(2, 17) + SourceIndex(5)
+1->Emitted(41, 1) Source(2, 1) + SourceIndex(5)
+2 >Emitted(41, 2) Source(2, 2) + SourceIndex(5)
+3 >Emitted(41, 3) Source(2, 3) + SourceIndex(5)
+4 >Emitted(41, 14) Source(2, 14) + SourceIndex(5)
+5 >Emitted(41, 16) Source(2, 16) + SourceIndex(5)
+6 >Emitted(41, 17) Source(2, 17) + SourceIndex(5)
 ---
 >>>function forthirdthird_part1Rest() {
 1->
@@ -988,9 +998,9 @@ sourceFile:../../third_part1.ts
   >
 2 >function 
 3 >         forthirdthird_part1Rest
-1->Emitted(40, 1) Source(3, 1) + SourceIndex(5)
-2 >Emitted(40, 10) Source(3, 10) + SourceIndex(5)
-3 >Emitted(40, 33) Source(3, 33) + SourceIndex(5)
+1->Emitted(42, 1) Source(3, 1) + SourceIndex(5)
+2 >Emitted(42, 10) Source(3, 10) + SourceIndex(5)
+3 >Emitted(42, 33) Source(3, 33) + SourceIndex(5)
 ---
 >>>    var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^
@@ -1010,14 +1020,14 @@ sourceFile:../../third_part1.ts
 6 >                                               , 
 7 >                                                 ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                         ;
-1->Emitted(41, 5) Source(4, 1) + SourceIndex(5)
-2 >Emitted(41, 9) Source(4, 7) + SourceIndex(5)
-3 >Emitted(41, 38) Source(4, 48) + SourceIndex(5)
-4 >Emitted(41, 40) Source(4, 9) + SourceIndex(5)
-5 >Emitted(41, 48) Source(4, 10) + SourceIndex(5)
-6 >Emitted(41, 50) Source(4, 12) + SourceIndex(5)
-7 >Emitted(41, 74) Source(4, 48) + SourceIndex(5)
-8 >Emitted(41, 75) Source(4, 49) + SourceIndex(5)
+1->Emitted(43, 5) Source(4, 1) + SourceIndex(5)
+2 >Emitted(43, 9) Source(4, 7) + SourceIndex(5)
+3 >Emitted(43, 38) Source(4, 48) + SourceIndex(5)
+4 >Emitted(43, 40) Source(4, 9) + SourceIndex(5)
+5 >Emitted(43, 48) Source(4, 10) + SourceIndex(5)
+6 >Emitted(43, 50) Source(4, 12) + SourceIndex(5)
+7 >Emitted(43, 74) Source(4, 48) + SourceIndex(5)
+8 >Emitted(43, 75) Source(4, 49) + SourceIndex(5)
 ---
 >>>}
 1 >
@@ -1026,8 +1036,8 @@ sourceFile:../../third_part1.ts
 1 >
   >
 2 >}
-1 >Emitted(42, 1) Source(5, 1) + SourceIndex(5)
-2 >Emitted(42, 2) Source(5, 2) + SourceIndex(5)
+1 >Emitted(44, 1) Source(5, 1) + SourceIndex(5)
+2 >Emitted(44, 2) Source(5, 2) + SourceIndex(5)
 ---
 >>>//# sourceMappingURL=third-output.js.map
 
@@ -1042,39 +1052,39 @@ sourceFile:../../third_part1.ts
       "sections": [
         {
           "pos": 0,
-          "end": 415,
+          "end": 500,
           "kind": "emitHelpers",
           "data": "typescript:rest"
         },
         {
-          "pos": 417,
-          "end": 661,
+          "pos": 502,
+          "end": 746,
           "kind": "prepend",
           "data": "/src/first/bin/first-output.js",
           "texts": [
             {
-              "pos": 417,
-              "end": 661,
+              "pos": 502,
+              "end": 746,
               "kind": "text"
             }
           ]
         },
         {
-          "pos": 661,
-          "end": 1065,
+          "pos": 746,
+          "end": 1150,
           "kind": "prepend",
           "data": "/src/2/second-output.js",
           "texts": [
             {
-              "pos": 661,
-              "end": 1065,
+              "pos": 746,
+              "end": 1150,
               "kind": "text"
             }
           ]
         },
         {
-          "pos": 1065,
-          "end": 1218,
+          "pos": 1150,
+          "end": 1303,
           "kind": "text"
         }
       ],
@@ -1127,20 +1137,22 @@ sourceFile:../../third_part1.ts
 ======================================================================
 File:: /src/third/thirdjs/output/third-output.js
 ----------------------------------------------------------------------
-emitHelpers: (0-415):: typescript:rest
+emitHelpers: (0-500):: typescript:rest
 var __rest = (this && this.__rest) || function (s, e) {
     var t = {};
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 ----------------------------------------------------------------------
-prepend: (417-661):: /src/first/bin/first-output.js texts:: 1
+prepend: (502-746):: /src/first/bin/first-output.js texts:: 1
 >>--------------------------------------------------------------------
-text: (417-661)
+text: (502-746)
 var s = "Hello, world";
 console.log(s);
 function forfirstfirst_PART1Rest() {
@@ -1153,9 +1165,9 @@ function f() {
 }
 
 ----------------------------------------------------------------------
-prepend: (661-1065):: /src/2/second-output.js texts:: 1
+prepend: (746-1150):: /src/2/second-output.js texts:: 1
 >>--------------------------------------------------------------------
-text: (661-1065)
+text: (746-1150)
 var N;
 (function (N) {
     function f() {
@@ -1176,7 +1188,7 @@ var C = (function () {
 }());
 
 ----------------------------------------------------------------------
-text: (1065-1218)
+text: (1150-1303)
 var c = new C();
 c.doSomething();
 function forthirdthird_part1Rest() {

tests/baselines/reference/tsbuild/outfile-concat/incremental-declaration-doesnt-change/emitHelpers-in-only-one-dependency-project.js

@@ -283,8 +283,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var s = "Hello, world";
@@ -318,7 +320,7 @@ c.doSomething();
 //# sourceMappingURL=third-output.js.map
 
 //// [/src/third/thirdjs/output/third-output.js.map]
-{"version":3,"file":"third-output.js","sourceRoot":"","sources":["../../../first/first_PART1.ts","../../../first/first_part2.ts","../../../first/first_part3.ts","../../../second/second_part1.ts","../../../second/second_part2.ts","../../third_part1.ts"],"names":[],"mappings":";;;;;;;;;AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,SAAS,uBAAuB,KAAK,CAAC;AAAA,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACXrD,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC;ACED,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;AACD,SAAS,yBAAyB;IAClC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;ACbD;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC;ACJD,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC"}
+{"version":3,"file":"third-output.js","sourceRoot":"","sources":["../../../first/first_PART1.ts","../../../first/first_part2.ts","../../../first/first_part3.ts","../../../second/second_part1.ts","../../../second/second_part2.ts","../../third_part1.ts"],"names":[],"mappings":";;;;;;;;;;;AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,SAAS,uBAAuB,KAAK,CAAC;AAAA,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACXrD,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC;ACED,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;AACD,SAAS,yBAAyB;IAClC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;ACbD;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC;ACJD,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC"}
 
 //// [/src/third/thirdjs/output/third-output.js.map.baseline.txt]
 ===================================================================
@@ -336,8 +338,10 @@ sourceFile:../../../first/first_PART1.ts
 >>>    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
 >>>        t[p] = s[p];
 >>>    if (s != null && typeof Object.getOwnPropertySymbols === "function")
->>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
->>>            t[p[i]] = s[p[i]];
+>>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+>>>            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+>>>                t[p[i]] = s[p[i]];
+>>>        }
 >>>    return t;
 >>>};
 >>>var s = "Hello, world";
@@ -357,12 +361,12 @@ sourceFile:../../../first/first_PART1.ts
 4 >      = 
 5 >        "Hello, world"
 6 >                      ;
-1 >Emitted(10, 1) Source(5, 1) + SourceIndex(0)
-2 >Emitted(10, 5) Source(5, 7) + SourceIndex(0)
-3 >Emitted(10, 6) Source(5, 8) + SourceIndex(0)
-4 >Emitted(10, 9) Source(5, 11) + SourceIndex(0)
-5 >Emitted(10, 23) Source(5, 25) + SourceIndex(0)
-6 >Emitted(10, 24) Source(5, 26) + SourceIndex(0)
+1 >Emitted(12, 1) Source(5, 1) + SourceIndex(0)
+2 >Emitted(12, 5) Source(5, 7) + SourceIndex(0)
+3 >Emitted(12, 6) Source(5, 8) + SourceIndex(0)
+4 >Emitted(12, 9) Source(5, 11) + SourceIndex(0)
+5 >Emitted(12, 23) Source(5, 25) + SourceIndex(0)
+6 >Emitted(12, 24) Source(5, 26) + SourceIndex(0)
 ---
 >>>console.log(s);
 1 >
@@ -388,14 +392,14 @@ sourceFile:../../../first/first_PART1.ts
 6 >            s
 7 >             )
 8 >              ;
-1 >Emitted(11, 1) Source(11, 1) + SourceIndex(0)
-2 >Emitted(11, 8) Source(11, 8) + SourceIndex(0)
-3 >Emitted(11, 9) Source(11, 9) + SourceIndex(0)
-4 >Emitted(11, 12) Source(11, 12) + SourceIndex(0)
-5 >Emitted(11, 13) Source(11, 13) + SourceIndex(0)
-6 >Emitted(11, 14) Source(11, 14) + SourceIndex(0)
-7 >Emitted(11, 15) Source(11, 15) + SourceIndex(0)
-8 >Emitted(11, 16) Source(11, 16) + SourceIndex(0)
+1 >Emitted(13, 1) Source(11, 1) + SourceIndex(0)
+2 >Emitted(13, 8) Source(11, 8) + SourceIndex(0)
+3 >Emitted(13, 9) Source(11, 9) + SourceIndex(0)
+4 >Emitted(13, 12) Source(11, 12) + SourceIndex(0)
+5 >Emitted(13, 13) Source(11, 13) + SourceIndex(0)
+6 >Emitted(13, 14) Source(11, 14) + SourceIndex(0)
+7 >Emitted(13, 15) Source(11, 15) + SourceIndex(0)
+8 >Emitted(13, 16) Source(11, 16) + SourceIndex(0)
 ---
 >>>function forfirstfirst_PART1Rest() { }
 1->
@@ -409,11 +413,11 @@ sourceFile:../../../first/first_PART1.ts
 3 >         forfirstfirst_PART1Rest
 4 >                                () { 
 5 >                                     }
-1->Emitted(12, 1) Source(12, 1) + SourceIndex(0)
-2 >Emitted(12, 10) Source(12, 10) + SourceIndex(0)
-3 >Emitted(12, 33) Source(12, 33) + SourceIndex(0)
-4 >Emitted(12, 38) Source(12, 38) + SourceIndex(0)
-5 >Emitted(12, 39) Source(12, 39) + SourceIndex(0)
+1->Emitted(14, 1) Source(12, 1) + SourceIndex(0)
+2 >Emitted(14, 10) Source(12, 10) + SourceIndex(0)
+3 >Emitted(14, 33) Source(12, 33) + SourceIndex(0)
+4 >Emitted(14, 38) Source(12, 38) + SourceIndex(0)
+5 >Emitted(14, 39) Source(12, 39) + SourceIndex(0)
 ---
 >>>console.log(s);
 1 >
@@ -433,14 +437,14 @@ sourceFile:../../../first/first_PART1.ts
 6 >            s
 7 >             )
 8 >              ;
-1 >Emitted(13, 1) Source(12, 39) + SourceIndex(0)
-2 >Emitted(13, 8) Source(12, 46) + SourceIndex(0)
-3 >Emitted(13, 9) Source(12, 47) + SourceIndex(0)
-4 >Emitted(13, 12) Source(12, 50) + SourceIndex(0)
-5 >Emitted(13, 13) Source(12, 51) + SourceIndex(0)
-6 >Emitted(13, 14) Source(12, 52) + SourceIndex(0)
-7 >Emitted(13, 15) Source(12, 53) + SourceIndex(0)
-8 >Emitted(13, 16) Source(12, 54) + SourceIndex(0)
+1 >Emitted(15, 1) Source(12, 39) + SourceIndex(0)
+2 >Emitted(15, 8) Source(12, 46) + SourceIndex(0)
+3 >Emitted(15, 9) Source(12, 47) + SourceIndex(0)
+4 >Emitted(15, 12) Source(12, 50) + SourceIndex(0)
+5 >Emitted(15, 13) Source(12, 51) + SourceIndex(0)
+6 >Emitted(15, 14) Source(12, 52) + SourceIndex(0)
+7 >Emitted(15, 15) Source(12, 53) + SourceIndex(0)
+8 >Emitted(15, 16) Source(12, 54) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -465,15 +469,15 @@ sourceFile:../../../first/first_part2.ts
 7 >             ()
 8 >               )
 9 >                ;
-1->Emitted(14, 1) Source(1, 1) + SourceIndex(1)
-2 >Emitted(14, 8) Source(1, 8) + SourceIndex(1)
-3 >Emitted(14, 9) Source(1, 9) + SourceIndex(1)
-4 >Emitted(14, 12) Source(1, 12) + SourceIndex(1)
-5 >Emitted(14, 13) Source(1, 13) + SourceIndex(1)
-6 >Emitted(14, 14) Source(1, 14) + SourceIndex(1)
-7 >Emitted(14, 16) Source(1, 16) + SourceIndex(1)
-8 >Emitted(14, 17) Source(1, 17) + SourceIndex(1)
-9 >Emitted(14, 18) Source(1, 18) + SourceIndex(1)
+1->Emitted(16, 1) Source(1, 1) + SourceIndex(1)
+2 >Emitted(16, 8) Source(1, 8) + SourceIndex(1)
+3 >Emitted(16, 9) Source(1, 9) + SourceIndex(1)
+4 >Emitted(16, 12) Source(1, 12) + SourceIndex(1)
+5 >Emitted(16, 13) Source(1, 13) + SourceIndex(1)
+6 >Emitted(16, 14) Source(1, 14) + SourceIndex(1)
+7 >Emitted(16, 16) Source(1, 16) + SourceIndex(1)
+8 >Emitted(16, 17) Source(1, 17) + SourceIndex(1)
+9 >Emitted(16, 18) Source(1, 18) + SourceIndex(1)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -487,9 +491,9 @@ sourceFile:../../../first/first_part3.ts
 1 >
 2 >function 
 3 >         f
-1 >Emitted(15, 1) Source(1, 1) + SourceIndex(2)
-2 >Emitted(15, 10) Source(1, 10) + SourceIndex(2)
-3 >Emitted(15, 11) Source(1, 11) + SourceIndex(2)
+1 >Emitted(17, 1) Source(1, 1) + SourceIndex(2)
+2 >Emitted(17, 10) Source(1, 10) + SourceIndex(2)
+3 >Emitted(17, 11) Source(1, 11) + SourceIndex(2)
 ---
 >>>    return "JS does hoists";
 1->^^^^
@@ -501,10 +505,10 @@ sourceFile:../../../first/first_part3.ts
 2 >    return 
 3 >           "JS does hoists"
 4 >                           ;
-1->Emitted(16, 5) Source(2, 5) + SourceIndex(2)
-2 >Emitted(16, 12) Source(2, 12) + SourceIndex(2)
-3 >Emitted(16, 28) Source(2, 28) + SourceIndex(2)
-4 >Emitted(16, 29) Source(2, 29) + SourceIndex(2)
+1->Emitted(18, 5) Source(2, 5) + SourceIndex(2)
+2 >Emitted(18, 12) Source(2, 12) + SourceIndex(2)
+3 >Emitted(18, 28) Source(2, 28) + SourceIndex(2)
+4 >Emitted(18, 29) Source(2, 29) + SourceIndex(2)
 ---
 >>>}
 1 >
@@ -513,8 +517,8 @@ sourceFile:../../../first/first_part3.ts
 1 >
   >
 2 >}
-1 >Emitted(17, 1) Source(3, 1) + SourceIndex(2)
-2 >Emitted(17, 2) Source(3, 2) + SourceIndex(2)
+1 >Emitted(19, 1) Source(3, 1) + SourceIndex(2)
+2 >Emitted(19, 2) Source(3, 2) + SourceIndex(2)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -540,10 +544,10 @@ sourceFile:../../../second/second_part1.ts
   >     
   >         f();
   >     }
-1->Emitted(18, 1) Source(5, 1) + SourceIndex(3)
-2 >Emitted(18, 5) Source(5, 11) + SourceIndex(3)
-3 >Emitted(18, 6) Source(5, 12) + SourceIndex(3)
-4 >Emitted(18, 7) Source(11, 2) + SourceIndex(3)
+1->Emitted(20, 1) Source(5, 1) + SourceIndex(3)
+2 >Emitted(20, 5) Source(5, 11) + SourceIndex(3)
+3 >Emitted(20, 6) Source(5, 12) + SourceIndex(3)
+4 >Emitted(20, 7) Source(11, 2) + SourceIndex(3)
 ---
 >>>(function (N) {
 1->
@@ -553,9 +557,9 @@ sourceFile:../../../second/second_part1.ts
 1->
 2 >namespace 
 3 >           N
-1->Emitted(19, 1) Source(5, 1) + SourceIndex(3)
-2 >Emitted(19, 12) Source(5, 11) + SourceIndex(3)
-3 >Emitted(19, 13) Source(5, 12) + SourceIndex(3)
+1->Emitted(21, 1) Source(5, 1) + SourceIndex(3)
+2 >Emitted(21, 12) Source(5, 11) + SourceIndex(3)
+3 >Emitted(21, 13) Source(5, 12) + SourceIndex(3)
 ---
 >>>    function f() {
 1->^^^^
@@ -566,9 +570,9 @@ sourceFile:../../../second/second_part1.ts
   >    
 2 >    function 
 3 >             f
-1->Emitted(20, 5) Source(6, 5) + SourceIndex(3)
-2 >Emitted(20, 14) Source(6, 14) + SourceIndex(3)
-3 >Emitted(20, 15) Source(6, 15) + SourceIndex(3)
+1->Emitted(22, 5) Source(6, 5) + SourceIndex(3)
+2 >Emitted(22, 14) Source(6, 14) + SourceIndex(3)
+3 >Emitted(22, 15) Source(6, 15) + SourceIndex(3)
 ---
 >>>        console.log('testing');
 1->^^^^^^^^
@@ -588,14 +592,14 @@ sourceFile:../../../second/second_part1.ts
 6 >                    'testing'
 7 >                             )
 8 >                              ;
-1->Emitted(21, 9) Source(7, 9) + SourceIndex(3)
-2 >Emitted(21, 16) Source(7, 16) + SourceIndex(3)
-3 >Emitted(21, 17) Source(7, 17) + SourceIndex(3)
-4 >Emitted(21, 20) Source(7, 20) + SourceIndex(3)
-5 >Emitted(21, 21) Source(7, 21) + SourceIndex(3)
-6 >Emitted(21, 30) Source(7, 30) + SourceIndex(3)
-7 >Emitted(21, 31) Source(7, 31) + SourceIndex(3)
-8 >Emitted(21, 32) Source(7, 32) + SourceIndex(3)
+1->Emitted(23, 9) Source(7, 9) + SourceIndex(3)
+2 >Emitted(23, 16) Source(7, 16) + SourceIndex(3)
+3 >Emitted(23, 17) Source(7, 17) + SourceIndex(3)
+4 >Emitted(23, 20) Source(7, 20) + SourceIndex(3)
+5 >Emitted(23, 21) Source(7, 21) + SourceIndex(3)
+6 >Emitted(23, 30) Source(7, 30) + SourceIndex(3)
+7 >Emitted(23, 31) Source(7, 31) + SourceIndex(3)
+8 >Emitted(23, 32) Source(7, 32) + SourceIndex(3)
 ---
 >>>    }
 1 >^^^^
@@ -604,8 +608,8 @@ sourceFile:../../../second/second_part1.ts
 1 >
   >    
 2 >    }
-1 >Emitted(22, 5) Source(8, 5) + SourceIndex(3)
-2 >Emitted(22, 6) Source(8, 6) + SourceIndex(3)
+1 >Emitted(24, 5) Source(8, 5) + SourceIndex(3)
+2 >Emitted(24, 6) Source(8, 6) + SourceIndex(3)
 ---
 >>>    f();
 1->^^^^
@@ -619,10 +623,10 @@ sourceFile:../../../second/second_part1.ts
 2 >    f
 3 >     ()
 4 >       ;
-1->Emitted(23, 5) Source(10, 5) + SourceIndex(3)
-2 >Emitted(23, 6) Source(10, 6) + SourceIndex(3)
-3 >Emitted(23, 8) Source(10, 8) + SourceIndex(3)
-4 >Emitted(23, 9) Source(10, 9) + SourceIndex(3)
+1->Emitted(25, 5) Source(10, 5) + SourceIndex(3)
+2 >Emitted(25, 6) Source(10, 6) + SourceIndex(3)
+3 >Emitted(25, 8) Source(10, 8) + SourceIndex(3)
+4 >Emitted(25, 9) Source(10, 9) + SourceIndex(3)
 ---
 >>>})(N || (N = {}));
 1->
@@ -647,13 +651,13 @@ sourceFile:../../../second/second_part1.ts
   >          
   >              f();
   >          }
-1->Emitted(24, 1) Source(11, 1) + SourceIndex(3)
-2 >Emitted(24, 2) Source(11, 2) + SourceIndex(3)
-3 >Emitted(24, 4) Source(5, 11) + SourceIndex(3)
-4 >Emitted(24, 5) Source(5, 12) + SourceIndex(3)
-5 >Emitted(24, 10) Source(5, 11) + SourceIndex(3)
-6 >Emitted(24, 11) Source(5, 12) + SourceIndex(3)
-7 >Emitted(24, 19) Source(11, 2) + SourceIndex(3)
+1->Emitted(26, 1) Source(11, 1) + SourceIndex(3)
+2 >Emitted(26, 2) Source(11, 2) + SourceIndex(3)
+3 >Emitted(26, 4) Source(5, 11) + SourceIndex(3)
+4 >Emitted(26, 5) Source(5, 12) + SourceIndex(3)
+5 >Emitted(26, 10) Source(5, 11) + SourceIndex(3)
+6 >Emitted(26, 11) Source(5, 12) + SourceIndex(3)
+7 >Emitted(26, 19) Source(11, 2) + SourceIndex(3)
 ---
 >>>function forsecondsecond_part1Rest() {
 1->
@@ -664,9 +668,9 @@ sourceFile:../../../second/second_part1.ts
   >
 2 >function 
 3 >         forsecondsecond_part1Rest
-1->Emitted(25, 1) Source(12, 1) + SourceIndex(3)
-2 >Emitted(25, 10) Source(12, 10) + SourceIndex(3)
-3 >Emitted(25, 35) Source(12, 35) + SourceIndex(3)
+1->Emitted(27, 1) Source(12, 1) + SourceIndex(3)
+2 >Emitted(27, 10) Source(12, 10) + SourceIndex(3)
+3 >Emitted(27, 35) Source(12, 35) + SourceIndex(3)
 ---
 >>>    var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^
@@ -686,14 +690,14 @@ sourceFile:../../../second/second_part1.ts
 6 >                                               , 
 7 >                                                 ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                         ;
-1->Emitted(26, 5) Source(13, 1) + SourceIndex(3)
-2 >Emitted(26, 9) Source(13, 7) + SourceIndex(3)
-3 >Emitted(26, 38) Source(13, 48) + SourceIndex(3)
-4 >Emitted(26, 40) Source(13, 9) + SourceIndex(3)
-5 >Emitted(26, 48) Source(13, 10) + SourceIndex(3)
-6 >Emitted(26, 50) Source(13, 12) + SourceIndex(3)
-7 >Emitted(26, 74) Source(13, 48) + SourceIndex(3)
-8 >Emitted(26, 75) Source(13, 49) + SourceIndex(3)
+1->Emitted(28, 5) Source(13, 1) + SourceIndex(3)
+2 >Emitted(28, 9) Source(13, 7) + SourceIndex(3)
+3 >Emitted(28, 38) Source(13, 48) + SourceIndex(3)
+4 >Emitted(28, 40) Source(13, 9) + SourceIndex(3)
+5 >Emitted(28, 48) Source(13, 10) + SourceIndex(3)
+6 >Emitted(28, 50) Source(13, 12) + SourceIndex(3)
+7 >Emitted(28, 74) Source(13, 48) + SourceIndex(3)
+8 >Emitted(28, 75) Source(13, 49) + SourceIndex(3)
 ---
 >>>}
 1 >
@@ -702,8 +706,8 @@ sourceFile:../../../second/second_part1.ts
 1 >
   >
 2 >}
-1 >Emitted(27, 1) Source(14, 1) + SourceIndex(3)
-2 >Emitted(27, 2) Source(14, 2) + SourceIndex(3)
+1 >Emitted(29, 1) Source(14, 1) + SourceIndex(3)
+2 >Emitted(29, 2) Source(14, 2) + SourceIndex(3)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -713,13 +717,13 @@ sourceFile:../../../second/second_part2.ts
 1->
 2 >^^^^^^^^^^^^^^^^^^^->
 1->
-1->Emitted(28, 1) Source(1, 1) + SourceIndex(4)
+1->Emitted(30, 1) Source(1, 1) + SourceIndex(4)
 ---
 >>>    function C() {
 1->^^^^
 2 >    ^^->
 1->
-1->Emitted(29, 5) Source(1, 1) + SourceIndex(4)
+1->Emitted(31, 5) Source(1, 1) + SourceIndex(4)
 ---
 >>>    }
 1->^^^^
@@ -731,8 +735,8 @@ sourceFile:../../../second/second_part2.ts
   >    }
   >
 2 >    }
-1->Emitted(30, 5) Source(5, 1) + SourceIndex(4)
-2 >Emitted(30, 6) Source(5, 2) + SourceIndex(4)
+1->Emitted(32, 5) Source(5, 1) + SourceIndex(4)
+2 >Emitted(32, 6) Source(5, 2) + SourceIndex(4)
 ---
 >>>    C.prototype.doSomething = function () {
 1->^^^^
@@ -742,9 +746,9 @@ sourceFile:../../../second/second_part2.ts
 1->
 2 >    doSomething
 3 >                           
-1->Emitted(31, 5) Source(2, 5) + SourceIndex(4)
-2 >Emitted(31, 28) Source(2, 16) + SourceIndex(4)
-3 >Emitted(31, 31) Source(2, 5) + SourceIndex(4)
+1->Emitted(33, 5) Source(2, 5) + SourceIndex(4)
+2 >Emitted(33, 28) Source(2, 16) + SourceIndex(4)
+3 >Emitted(33, 31) Source(2, 5) + SourceIndex(4)
 ---
 >>>        console.log("something got done");
 1->^^^^^^^^
@@ -764,14 +768,14 @@ sourceFile:../../../second/second_part2.ts
 6 >                    "something got done"
 7 >                                        )
 8 >                                         ;
-1->Emitted(32, 9) Source(3, 9) + SourceIndex(4)
-2 >Emitted(32, 16) Source(3, 16) + SourceIndex(4)
-3 >Emitted(32, 17) Source(3, 17) + SourceIndex(4)
-4 >Emitted(32, 20) Source(3, 20) + SourceIndex(4)
-5 >Emitted(32, 21) Source(3, 21) + SourceIndex(4)
-6 >Emitted(32, 41) Source(3, 41) + SourceIndex(4)
-7 >Emitted(32, 42) Source(3, 42) + SourceIndex(4)
-8 >Emitted(32, 43) Source(3, 43) + SourceIndex(4)
+1->Emitted(34, 9) Source(3, 9) + SourceIndex(4)
+2 >Emitted(34, 16) Source(3, 16) + SourceIndex(4)
+3 >Emitted(34, 17) Source(3, 17) + SourceIndex(4)
+4 >Emitted(34, 20) Source(3, 20) + SourceIndex(4)
+5 >Emitted(34, 21) Source(3, 21) + SourceIndex(4)
+6 >Emitted(34, 41) Source(3, 41) + SourceIndex(4)
+7 >Emitted(34, 42) Source(3, 42) + SourceIndex(4)
+8 >Emitted(34, 43) Source(3, 43) + SourceIndex(4)
 ---
 >>>    };
 1 >^^^^
@@ -780,8 +784,8 @@ sourceFile:../../../second/second_part2.ts
 1 >
   >    
 2 >    }
-1 >Emitted(33, 5) Source(4, 5) + SourceIndex(4)
-2 >Emitted(33, 6) Source(4, 6) + SourceIndex(4)
+1 >Emitted(35, 5) Source(4, 5) + SourceIndex(4)
+2 >Emitted(35, 6) Source(4, 6) + SourceIndex(4)
 ---
 >>>    return C;
 1->^^^^
@@ -789,8 +793,8 @@ sourceFile:../../../second/second_part2.ts
 1->
   >
 2 >    }
-1->Emitted(34, 5) Source(5, 1) + SourceIndex(4)
-2 >Emitted(34, 13) Source(5, 2) + SourceIndex(4)
+1->Emitted(36, 5) Source(5, 1) + SourceIndex(4)
+2 >Emitted(36, 13) Source(5, 2) + SourceIndex(4)
 ---
 >>>}());
 1 >
@@ -806,10 +810,10 @@ sourceFile:../../../second/second_part2.ts
   >         console.log("something got done");
   >     }
   > }
-1 >Emitted(35, 1) Source(5, 1) + SourceIndex(4)
-2 >Emitted(35, 2) Source(5, 2) + SourceIndex(4)
-3 >Emitted(35, 2) Source(1, 1) + SourceIndex(4)
-4 >Emitted(35, 6) Source(5, 2) + SourceIndex(4)
+1 >Emitted(37, 1) Source(5, 1) + SourceIndex(4)
+2 >Emitted(37, 2) Source(5, 2) + SourceIndex(4)
+3 >Emitted(37, 2) Source(1, 1) + SourceIndex(4)
+4 >Emitted(37, 6) Source(5, 2) + SourceIndex(4)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -833,14 +837,14 @@ sourceFile:../../third_part1.ts
 6 >            C
 7 >             ()
 8 >               ;
-1->Emitted(36, 1) Source(1, 1) + SourceIndex(5)
-2 >Emitted(36, 5) Source(1, 5) + SourceIndex(5)
-3 >Emitted(36, 6) Source(1, 6) + SourceIndex(5)
-4 >Emitted(36, 9) Source(1, 9) + SourceIndex(5)
-5 >Emitted(36, 13) Source(1, 13) + SourceIndex(5)
-6 >Emitted(36, 14) Source(1, 14) + SourceIndex(5)
-7 >Emitted(36, 16) Source(1, 16) + SourceIndex(5)
-8 >Emitted(36, 17) Source(1, 17) + SourceIndex(5)
+1->Emitted(38, 1) Source(1, 1) + SourceIndex(5)
+2 >Emitted(38, 5) Source(1, 5) + SourceIndex(5)
+3 >Emitted(38, 6) Source(1, 6) + SourceIndex(5)
+4 >Emitted(38, 9) Source(1, 9) + SourceIndex(5)
+5 >Emitted(38, 13) Source(1, 13) + SourceIndex(5)
+6 >Emitted(38, 14) Source(1, 14) + SourceIndex(5)
+7 >Emitted(38, 16) Source(1, 16) + SourceIndex(5)
+8 >Emitted(38, 17) Source(1, 17) + SourceIndex(5)
 ---
 >>>c.doSomething();
 1->
@@ -857,12 +861,12 @@ sourceFile:../../third_part1.ts
 4 >  doSomething
 5 >             ()
 6 >               ;
-1->Emitted(37, 1) Source(2, 1) + SourceIndex(5)
-2 >Emitted(37, 2) Source(2, 2) + SourceIndex(5)
-3 >Emitted(37, 3) Source(2, 3) + SourceIndex(5)
-4 >Emitted(37, 14) Source(2, 14) + SourceIndex(5)
-5 >Emitted(37, 16) Source(2, 16) + SourceIndex(5)
-6 >Emitted(37, 17) Source(2, 17) + SourceIndex(5)
+1->Emitted(39, 1) Source(2, 1) + SourceIndex(5)
+2 >Emitted(39, 2) Source(2, 2) + SourceIndex(5)
+3 >Emitted(39, 3) Source(2, 3) + SourceIndex(5)
+4 >Emitted(39, 14) Source(2, 14) + SourceIndex(5)
+5 >Emitted(39, 16) Source(2, 16) + SourceIndex(5)
+6 >Emitted(39, 17) Source(2, 17) + SourceIndex(5)
 ---
 >>>//# sourceMappingURL=third-output.js.map
 
@@ -877,39 +881,39 @@ sourceFile:../../third_part1.ts
       "sections": [
         {
           "pos": 0,
-          "end": 415,
+          "end": 500,
           "kind": "emitHelpers",
           "data": "typescript:rest"
         },
         {
-          "pos": 417,
-          "end": 584,
+          "pos": 502,
+          "end": 669,
           "kind": "prepend",
           "data": "/src/first/bin/first-output.js",
           "texts": [
             {
-              "pos": 417,
-              "end": 584,
+              "pos": 502,
+              "end": 669,
               "kind": "text"
             }
           ]
         },
         {
-          "pos": 584,
-          "end": 988,
+          "pos": 669,
+          "end": 1073,
           "kind": "prepend",
           "data": "/src/2/second-output.js",
           "texts": [
             {
-              "pos": 584,
-              "end": 988,
+              "pos": 669,
+              "end": 1073,
               "kind": "text"
             }
           ]
         },
         {
-          "pos": 988,
-          "end": 1024,
+          "pos": 1073,
+          "end": 1109,
           "kind": "text"
         }
       ]
@@ -957,20 +961,22 @@ sourceFile:../../third_part1.ts
 ======================================================================
 File:: /src/third/thirdjs/output/third-output.js
 ----------------------------------------------------------------------
-emitHelpers: (0-415):: typescript:rest
+emitHelpers: (0-500):: typescript:rest
 var __rest = (this && this.__rest) || function (s, e) {
     var t = {};
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 ----------------------------------------------------------------------
-prepend: (417-584):: /src/first/bin/first-output.js texts:: 1
+prepend: (502-669):: /src/first/bin/first-output.js texts:: 1
 >>--------------------------------------------------------------------
-text: (417-584)
+text: (502-669)
 var s = "Hello, world";
 console.log(s);
 function forfirstfirst_PART1Rest() { }
@@ -981,9 +987,9 @@ function f() {
 }
 
 ----------------------------------------------------------------------
-prepend: (584-988):: /src/2/second-output.js texts:: 1
+prepend: (669-1073):: /src/2/second-output.js texts:: 1
 >>--------------------------------------------------------------------
-text: (584-988)
+text: (669-1073)
 var N;
 (function (N) {
     function f() {
@@ -1004,7 +1010,7 @@ var C = (function () {
 }());
 
 ----------------------------------------------------------------------
-text: (988-1024)
+text: (1073-1109)
 var c = new C();
 c.doSomething();
 

tests/baselines/reference/tsbuild/outfile-concat/incremental-declaration-doesnt-change/multiple-emitHelpers-in-different-projects.js

@@ -4,8 +4,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var s = "Hello, world";
@@ -21,7 +23,7 @@ function f() {
 //# sourceMappingURL=first-output.js.map
 
 //// [/src/first/bin/first-output.js.map]
-{"version":3,"file":"first-output.js","sourceRoot":"","sources":["../first_PART1.ts","../first_part2.ts","../first_part3.ts"],"names":[],"mappings":";;;;;;;;;AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;AAAA,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACbhB,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}
+{"version":3,"file":"first-output.js","sourceRoot":"","sources":["../first_PART1.ts","../first_part2.ts","../first_part3.ts"],"names":[],"mappings":";;;;;;;;;;;AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;AAAA,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACbhB,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}
 
 //// [/src/first/bin/first-output.js.map.baseline.txt]
 ===================================================================
@@ -39,8 +41,10 @@ sourceFile:../first_PART1.ts
 >>>    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
 >>>        t[p] = s[p];
 >>>    if (s != null && typeof Object.getOwnPropertySymbols === "function")
->>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
->>>            t[p[i]] = s[p[i]];
+>>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+>>>            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+>>>                t[p[i]] = s[p[i]];
+>>>        }
 >>>    return t;
 >>>};
 >>>var s = "Hello, world";
@@ -60,12 +64,12 @@ sourceFile:../first_PART1.ts
 4 >      = 
 5 >        "Hello, world"
 6 >                      ;
-1 >Emitted(10, 1) Source(5, 1) + SourceIndex(0)
-2 >Emitted(10, 5) Source(5, 7) + SourceIndex(0)
-3 >Emitted(10, 6) Source(5, 8) + SourceIndex(0)
-4 >Emitted(10, 9) Source(5, 11) + SourceIndex(0)
-5 >Emitted(10, 23) Source(5, 25) + SourceIndex(0)
-6 >Emitted(10, 24) Source(5, 26) + SourceIndex(0)
+1 >Emitted(12, 1) Source(5, 1) + SourceIndex(0)
+2 >Emitted(12, 5) Source(5, 7) + SourceIndex(0)
+3 >Emitted(12, 6) Source(5, 8) + SourceIndex(0)
+4 >Emitted(12, 9) Source(5, 11) + SourceIndex(0)
+5 >Emitted(12, 23) Source(5, 25) + SourceIndex(0)
+6 >Emitted(12, 24) Source(5, 26) + SourceIndex(0)
 ---
 >>>console.log(s);
 1 >
@@ -91,14 +95,14 @@ sourceFile:../first_PART1.ts
 6 >            s
 7 >             )
 8 >              ;
-1 >Emitted(11, 1) Source(11, 1) + SourceIndex(0)
-2 >Emitted(11, 8) Source(11, 8) + SourceIndex(0)
-3 >Emitted(11, 9) Source(11, 9) + SourceIndex(0)
-4 >Emitted(11, 12) Source(11, 12) + SourceIndex(0)
-5 >Emitted(11, 13) Source(11, 13) + SourceIndex(0)
-6 >Emitted(11, 14) Source(11, 14) + SourceIndex(0)
-7 >Emitted(11, 15) Source(11, 15) + SourceIndex(0)
-8 >Emitted(11, 16) Source(11, 16) + SourceIndex(0)
+1 >Emitted(13, 1) Source(11, 1) + SourceIndex(0)
+2 >Emitted(13, 8) Source(11, 8) + SourceIndex(0)
+3 >Emitted(13, 9) Source(11, 9) + SourceIndex(0)
+4 >Emitted(13, 12) Source(11, 12) + SourceIndex(0)
+5 >Emitted(13, 13) Source(11, 13) + SourceIndex(0)
+6 >Emitted(13, 14) Source(11, 14) + SourceIndex(0)
+7 >Emitted(13, 15) Source(11, 15) + SourceIndex(0)
+8 >Emitted(13, 16) Source(11, 16) + SourceIndex(0)
 ---
 >>>function forfirstfirst_PART1Rest() {
 1->
@@ -109,9 +113,9 @@ sourceFile:../first_PART1.ts
   >
 2 >function 
 3 >         forfirstfirst_PART1Rest
-1->Emitted(12, 1) Source(12, 1) + SourceIndex(0)
-2 >Emitted(12, 10) Source(12, 10) + SourceIndex(0)
-3 >Emitted(12, 33) Source(12, 33) + SourceIndex(0)
+1->Emitted(14, 1) Source(12, 1) + SourceIndex(0)
+2 >Emitted(14, 10) Source(12, 10) + SourceIndex(0)
+3 >Emitted(14, 33) Source(12, 33) + SourceIndex(0)
 ---
 >>>    var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^
@@ -131,14 +135,14 @@ sourceFile:../first_PART1.ts
 6 >                                               , 
 7 >                                                 ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                         ;
-1->Emitted(13, 5) Source(13, 1) + SourceIndex(0)
-2 >Emitted(13, 9) Source(13, 7) + SourceIndex(0)
-3 >Emitted(13, 38) Source(13, 48) + SourceIndex(0)
-4 >Emitted(13, 40) Source(13, 9) + SourceIndex(0)
-5 >Emitted(13, 48) Source(13, 10) + SourceIndex(0)
-6 >Emitted(13, 50) Source(13, 12) + SourceIndex(0)
-7 >Emitted(13, 74) Source(13, 48) + SourceIndex(0)
-8 >Emitted(13, 75) Source(13, 49) + SourceIndex(0)
+1->Emitted(15, 5) Source(13, 1) + SourceIndex(0)
+2 >Emitted(15, 9) Source(13, 7) + SourceIndex(0)
+3 >Emitted(15, 38) Source(13, 48) + SourceIndex(0)
+4 >Emitted(15, 40) Source(13, 9) + SourceIndex(0)
+5 >Emitted(15, 48) Source(13, 10) + SourceIndex(0)
+6 >Emitted(15, 50) Source(13, 12) + SourceIndex(0)
+7 >Emitted(15, 74) Source(13, 48) + SourceIndex(0)
+8 >Emitted(15, 75) Source(13, 49) + SourceIndex(0)
 ---
 >>>}
 1 >
@@ -147,8 +151,8 @@ sourceFile:../first_PART1.ts
 1 >
   >
 2 >}
-1 >Emitted(14, 1) Source(14, 1) + SourceIndex(0)
-2 >Emitted(14, 2) Source(14, 2) + SourceIndex(0)
+1 >Emitted(16, 1) Source(14, 1) + SourceIndex(0)
+2 >Emitted(16, 2) Source(14, 2) + SourceIndex(0)
 ---
 >>>console.log(s);
 1->
@@ -168,14 +172,14 @@ sourceFile:../first_PART1.ts
 6 >            s
 7 >             )
 8 >              ;
-1->Emitted(15, 1) Source(14, 2) + SourceIndex(0)
-2 >Emitted(15, 8) Source(14, 9) + SourceIndex(0)
-3 >Emitted(15, 9) Source(14, 10) + SourceIndex(0)
-4 >Emitted(15, 12) Source(14, 13) + SourceIndex(0)
-5 >Emitted(15, 13) Source(14, 14) + SourceIndex(0)
-6 >Emitted(15, 14) Source(14, 15) + SourceIndex(0)
-7 >Emitted(15, 15) Source(14, 16) + SourceIndex(0)
-8 >Emitted(15, 16) Source(14, 17) + SourceIndex(0)
+1->Emitted(17, 1) Source(14, 2) + SourceIndex(0)
+2 >Emitted(17, 8) Source(14, 9) + SourceIndex(0)
+3 >Emitted(17, 9) Source(14, 10) + SourceIndex(0)
+4 >Emitted(17, 12) Source(14, 13) + SourceIndex(0)
+5 >Emitted(17, 13) Source(14, 14) + SourceIndex(0)
+6 >Emitted(17, 14) Source(14, 15) + SourceIndex(0)
+7 >Emitted(17, 15) Source(14, 16) + SourceIndex(0)
+8 >Emitted(17, 16) Source(14, 17) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/first/bin/first-output.js
@@ -200,15 +204,15 @@ sourceFile:../first_part2.ts
 7 >             ()
 8 >               )
 9 >                ;
-1->Emitted(16, 1) Source(1, 1) + SourceIndex(1)
-2 >Emitted(16, 8) Source(1, 8) + SourceIndex(1)
-3 >Emitted(16, 9) Source(1, 9) + SourceIndex(1)
-4 >Emitted(16, 12) Source(1, 12) + SourceIndex(1)
-5 >Emitted(16, 13) Source(1, 13) + SourceIndex(1)
-6 >Emitted(16, 14) Source(1, 14) + SourceIndex(1)
-7 >Emitted(16, 16) Source(1, 16) + SourceIndex(1)
-8 >Emitted(16, 17) Source(1, 17) + SourceIndex(1)
-9 >Emitted(16, 18) Source(1, 18) + SourceIndex(1)
+1->Emitted(18, 1) Source(1, 1) + SourceIndex(1)
+2 >Emitted(18, 8) Source(1, 8) + SourceIndex(1)
+3 >Emitted(18, 9) Source(1, 9) + SourceIndex(1)
+4 >Emitted(18, 12) Source(1, 12) + SourceIndex(1)
+5 >Emitted(18, 13) Source(1, 13) + SourceIndex(1)
+6 >Emitted(18, 14) Source(1, 14) + SourceIndex(1)
+7 >Emitted(18, 16) Source(1, 16) + SourceIndex(1)
+8 >Emitted(18, 17) Source(1, 17) + SourceIndex(1)
+9 >Emitted(18, 18) Source(1, 18) + SourceIndex(1)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/first/bin/first-output.js
@@ -222,9 +226,9 @@ sourceFile:../first_part3.ts
 1 >
 2 >function 
 3 >         f
-1 >Emitted(17, 1) Source(1, 1) + SourceIndex(2)
-2 >Emitted(17, 10) Source(1, 10) + SourceIndex(2)
-3 >Emitted(17, 11) Source(1, 11) + SourceIndex(2)
+1 >Emitted(19, 1) Source(1, 1) + SourceIndex(2)
+2 >Emitted(19, 10) Source(1, 10) + SourceIndex(2)
+3 >Emitted(19, 11) Source(1, 11) + SourceIndex(2)
 ---
 >>>    return "JS does hoists";
 1->^^^^
@@ -236,10 +240,10 @@ sourceFile:../first_part3.ts
 2 >    return 
 3 >           "JS does hoists"
 4 >                           ;
-1->Emitted(18, 5) Source(2, 5) + SourceIndex(2)
-2 >Emitted(18, 12) Source(2, 12) + SourceIndex(2)
-3 >Emitted(18, 28) Source(2, 28) + SourceIndex(2)
-4 >Emitted(18, 29) Source(2, 29) + SourceIndex(2)
+1->Emitted(20, 5) Source(2, 5) + SourceIndex(2)
+2 >Emitted(20, 12) Source(2, 12) + SourceIndex(2)
+3 >Emitted(20, 28) Source(2, 28) + SourceIndex(2)
+4 >Emitted(20, 29) Source(2, 29) + SourceIndex(2)
 ---
 >>>}
 1 >
@@ -248,8 +252,8 @@ sourceFile:../first_part3.ts
 1 >
   >
 2 >}
-1 >Emitted(19, 1) Source(3, 1) + SourceIndex(2)
-2 >Emitted(19, 2) Source(3, 2) + SourceIndex(2)
+1 >Emitted(21, 1) Source(3, 1) + SourceIndex(2)
+2 >Emitted(21, 2) Source(3, 2) + SourceIndex(2)
 ---
 >>>//# sourceMappingURL=first-output.js.map
 
@@ -266,13 +270,13 @@ sourceFile:../first_part3.ts
       "sections": [
         {
           "pos": 0,
-          "end": 415,
+          "end": 500,
           "kind": "emitHelpers",
           "data": "typescript:rest"
         },
         {
-          "pos": 417,
-          "end": 661,
+          "pos": 502,
+          "end": 746,
           "kind": "text"
         }
       ],
@@ -299,18 +303,20 @@ sourceFile:../first_part3.ts
 ======================================================================
 File:: /src/first/bin/first-output.js
 ----------------------------------------------------------------------
-emitHelpers: (0-415):: typescript:rest
+emitHelpers: (0-500):: typescript:rest
 var __rest = (this && this.__rest) || function (s, e) {
     var t = {};
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 ----------------------------------------------------------------------
-text: (417-661)
+text: (502-746)
 var s = "Hello, world";
 console.log(s);
 function forfirstfirst_PART1Rest() {
@@ -361,8 +367,10 @@ var __rest = (this && this.__rest) || function (s, e) {
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 var __read = (this && this.__read) || function (o, n) {
@@ -425,7 +433,7 @@ function forthirdthird_part1Rest() {
 //# sourceMappingURL=third-output.js.map
 
 //// [/src/third/thirdjs/output/third-output.js.map]
-{"version":3,"file":"third-output.js","sourceRoot":"","sources":["../../../first/first_PART1.ts","../../../first/first_part2.ts","../../../first/first_part3.ts","../../../second/second_part1.ts","../../../second/second_part2.ts","../../third_part1.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;AAAA,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACbhB,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC;ACED,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;AAED,SAAS,wBAAwB;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AACrD,wBAAwB,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE;ACb1C;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC;ACJD,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC;AAChB,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC"}
+{"version":3,"file":"third-output.js","sourceRoot":"","sources":["../../../first/first_PART1.ts","../../../first/first_part2.ts","../../../first/first_part3.ts","../../../second/second_part1.ts","../../../second/second_part2.ts","../../third_part1.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC;AAAA,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACbhB,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC;ACED,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;AAED,SAAS,wBAAwB;IAAC,WAAc;SAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;QAAd,sBAAc;;AAAI,CAAC;AACrD,wBAAwB,wBAAI,CAAC,EAAE,EAAE,EAAE,EAAE,EAAE,CAAC,GAAE;ACb1C;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC;ACJD,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC;AAChB,SAAS,uBAAuB;IAChC,IAAM,6BAAyC,EAAvC,QAAC,EAAE,wBAAoC,CAAC;AAChD,CAAC"}
 
 //// [/src/third/thirdjs/output/third-output.js.map.baseline.txt]
 ===================================================================
@@ -443,8 +451,10 @@ sourceFile:../../../first/first_PART1.ts
 >>>    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
 >>>        t[p] = s[p];
 >>>    if (s != null && typeof Object.getOwnPropertySymbols === "function")
->>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
->>>            t[p[i]] = s[p[i]];
+>>>        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+>>>            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+>>>                t[p[i]] = s[p[i]];
+>>>        }
 >>>    return t;
 >>>};
 >>>var __read = (this && this.__read) || function (o, n) {
@@ -484,12 +494,12 @@ sourceFile:../../../first/first_PART1.ts
 4 >      = 
 5 >        "Hello, world"
 6 >                      ;
-1 >Emitted(30, 1) Source(5, 1) + SourceIndex(0)
-2 >Emitted(30, 5) Source(5, 7) + SourceIndex(0)
-3 >Emitted(30, 6) Source(5, 8) + SourceIndex(0)
-4 >Emitted(30, 9) Source(5, 11) + SourceIndex(0)
-5 >Emitted(30, 23) Source(5, 25) + SourceIndex(0)
-6 >Emitted(30, 24) Source(5, 26) + SourceIndex(0)
+1 >Emitted(32, 1) Source(5, 1) + SourceIndex(0)
+2 >Emitted(32, 5) Source(5, 7) + SourceIndex(0)
+3 >Emitted(32, 6) Source(5, 8) + SourceIndex(0)
+4 >Emitted(32, 9) Source(5, 11) + SourceIndex(0)
+5 >Emitted(32, 23) Source(5, 25) + SourceIndex(0)
+6 >Emitted(32, 24) Source(5, 26) + SourceIndex(0)
 ---
 >>>console.log(s);
 1 >
@@ -515,14 +525,14 @@ sourceFile:../../../first/first_PART1.ts
 6 >            s
 7 >             )
 8 >              ;
-1 >Emitted(31, 1) Source(11, 1) + SourceIndex(0)
-2 >Emitted(31, 8) Source(11, 8) + SourceIndex(0)
-3 >Emitted(31, 9) Source(11, 9) + SourceIndex(0)
-4 >Emitted(31, 12) Source(11, 12) + SourceIndex(0)
-5 >Emitted(31, 13) Source(11, 13) + SourceIndex(0)
-6 >Emitted(31, 14) Source(11, 14) + SourceIndex(0)
-7 >Emitted(31, 15) Source(11, 15) + SourceIndex(0)
-8 >Emitted(31, 16) Source(11, 16) + SourceIndex(0)
+1 >Emitted(33, 1) Source(11, 1) + SourceIndex(0)
+2 >Emitted(33, 8) Source(11, 8) + SourceIndex(0)
+3 >Emitted(33, 9) Source(11, 9) + SourceIndex(0)
+4 >Emitted(33, 12) Source(11, 12) + SourceIndex(0)
+5 >Emitted(33, 13) Source(11, 13) + SourceIndex(0)
+6 >Emitted(33, 14) Source(11, 14) + SourceIndex(0)
+7 >Emitted(33, 15) Source(11, 15) + SourceIndex(0)
+8 >Emitted(33, 16) Source(11, 16) + SourceIndex(0)
 ---
 >>>function forfirstfirst_PART1Rest() {
 1->
@@ -533,9 +543,9 @@ sourceFile:../../../first/first_PART1.ts
   >
 2 >function 
 3 >         forfirstfirst_PART1Rest
-1->Emitted(32, 1) Source(12, 1) + SourceIndex(0)
-2 >Emitted(32, 10) Source(12, 10) + SourceIndex(0)
-3 >Emitted(32, 33) Source(12, 33) + SourceIndex(0)
+1->Emitted(34, 1) Source(12, 1) + SourceIndex(0)
+2 >Emitted(34, 10) Source(12, 10) + SourceIndex(0)
+3 >Emitted(34, 33) Source(12, 33) + SourceIndex(0)
 ---
 >>>    var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^
@@ -555,14 +565,14 @@ sourceFile:../../../first/first_PART1.ts
 6 >                                               , 
 7 >                                                 ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                         ;
-1->Emitted(33, 5) Source(13, 1) + SourceIndex(0)
-2 >Emitted(33, 9) Source(13, 7) + SourceIndex(0)
-3 >Emitted(33, 38) Source(13, 48) + SourceIndex(0)
-4 >Emitted(33, 40) Source(13, 9) + SourceIndex(0)
-5 >Emitted(33, 48) Source(13, 10) + SourceIndex(0)
-6 >Emitted(33, 50) Source(13, 12) + SourceIndex(0)
-7 >Emitted(33, 74) Source(13, 48) + SourceIndex(0)
-8 >Emitted(33, 75) Source(13, 49) + SourceIndex(0)
+1->Emitted(35, 5) Source(13, 1) + SourceIndex(0)
+2 >Emitted(35, 9) Source(13, 7) + SourceIndex(0)
+3 >Emitted(35, 38) Source(13, 48) + SourceIndex(0)
+4 >Emitted(35, 40) Source(13, 9) + SourceIndex(0)
+5 >Emitted(35, 48) Source(13, 10) + SourceIndex(0)
+6 >Emitted(35, 50) Source(13, 12) + SourceIndex(0)
+7 >Emitted(35, 74) Source(13, 48) + SourceIndex(0)
+8 >Emitted(35, 75) Source(13, 49) + SourceIndex(0)
 ---
 >>>}
 1 >
@@ -571,8 +581,8 @@ sourceFile:../../../first/first_PART1.ts
 1 >
   >
 2 >}
-1 >Emitted(34, 1) Source(14, 1) + SourceIndex(0)
-2 >Emitted(34, 2) Source(14, 2) + SourceIndex(0)
+1 >Emitted(36, 1) Source(14, 1) + SourceIndex(0)
+2 >Emitted(36, 2) Source(14, 2) + SourceIndex(0)
 ---
 >>>console.log(s);
 1->
@@ -592,14 +602,14 @@ sourceFile:../../../first/first_PART1.ts
 6 >            s
 7 >             )
 8 >              ;
-1->Emitted(35, 1) Source(14, 2) + SourceIndex(0)
-2 >Emitted(35, 8) Source(14, 9) + SourceIndex(0)
-3 >Emitted(35, 9) Source(14, 10) + SourceIndex(0)
-4 >Emitted(35, 12) Source(14, 13) + SourceIndex(0)
-5 >Emitted(35, 13) Source(14, 14) + SourceIndex(0)
-6 >Emitted(35, 14) Source(14, 15) + SourceIndex(0)
-7 >Emitted(35, 15) Source(14, 16) + SourceIndex(0)
-8 >Emitted(35, 16) Source(14, 17) + SourceIndex(0)
+1->Emitted(37, 1) Source(14, 2) + SourceIndex(0)
+2 >Emitted(37, 8) Source(14, 9) + SourceIndex(0)
+3 >Emitted(37, 9) Source(14, 10) + SourceIndex(0)
+4 >Emitted(37, 12) Source(14, 13) + SourceIndex(0)
+5 >Emitted(37, 13) Source(14, 14) + SourceIndex(0)
+6 >Emitted(37, 14) Source(14, 15) + SourceIndex(0)
+7 >Emitted(37, 15) Source(14, 16) + SourceIndex(0)
+8 >Emitted(37, 16) Source(14, 17) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -624,15 +634,15 @@ sourceFile:../../../first/first_part2.ts
 7 >             ()
 8 >               )
 9 >                ;
-1->Emitted(36, 1) Source(1, 1) + SourceIndex(1)
-2 >Emitted(36, 8) Source(1, 8) + SourceIndex(1)
-3 >Emitted(36, 9) Source(1, 9) + SourceIndex(1)
-4 >Emitted(36, 12) Source(1, 12) + SourceIndex(1)
-5 >Emitted(36, 13) Source(1, 13) + SourceIndex(1)
-6 >Emitted(36, 14) Source(1, 14) + SourceIndex(1)
-7 >Emitted(36, 16) Source(1, 16) + SourceIndex(1)
-8 >Emitted(36, 17) Source(1, 17) + SourceIndex(1)
-9 >Emitted(36, 18) Source(1, 18) + SourceIndex(1)
+1->Emitted(38, 1) Source(1, 1) + SourceIndex(1)
+2 >Emitted(38, 8) Source(1, 8) + SourceIndex(1)
+3 >Emitted(38, 9) Source(1, 9) + SourceIndex(1)
+4 >Emitted(38, 12) Source(1, 12) + SourceIndex(1)
+5 >Emitted(38, 13) Source(1, 13) + SourceIndex(1)
+6 >Emitted(38, 14) Source(1, 14) + SourceIndex(1)
+7 >Emitted(38, 16) Source(1, 16) + SourceIndex(1)
+8 >Emitted(38, 17) Source(1, 17) + SourceIndex(1)
+9 >Emitted(38, 18) Source(1, 18) + SourceIndex(1)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -646,9 +656,9 @@ sourceFile:../../../first/first_part3.ts
 1 >
 2 >function 
 3 >         f
-1 >Emitted(37, 1) Source(1, 1) + SourceIndex(2)
-2 >Emitted(37, 10) Source(1, 10) + SourceIndex(2)
-3 >Emitted(37, 11) Source(1, 11) + SourceIndex(2)
+1 >Emitted(39, 1) Source(1, 1) + SourceIndex(2)
+2 >Emitted(39, 10) Source(1, 10) + SourceIndex(2)
+3 >Emitted(39, 11) Source(1, 11) + SourceIndex(2)
 ---
 >>>    return "JS does hoists";
 1->^^^^
@@ -660,10 +670,10 @@ sourceFile:../../../first/first_part3.ts
 2 >    return 
 3 >           "JS does hoists"
 4 >                           ;
-1->Emitted(38, 5) Source(2, 5) + SourceIndex(2)
-2 >Emitted(38, 12) Source(2, 12) + SourceIndex(2)
-3 >Emitted(38, 28) Source(2, 28) + SourceIndex(2)
-4 >Emitted(38, 29) Source(2, 29) + SourceIndex(2)
+1->Emitted(40, 5) Source(2, 5) + SourceIndex(2)
+2 >Emitted(40, 12) Source(2, 12) + SourceIndex(2)
+3 >Emitted(40, 28) Source(2, 28) + SourceIndex(2)
+4 >Emitted(40, 29) Source(2, 29) + SourceIndex(2)
 ---
 >>>}
 1 >
@@ -672,8 +682,8 @@ sourceFile:../../../first/first_part3.ts
 1 >
   >
 2 >}
-1 >Emitted(39, 1) Source(3, 1) + SourceIndex(2)
-2 >Emitted(39, 2) Source(3, 2) + SourceIndex(2)
+1 >Emitted(41, 1) Source(3, 1) + SourceIndex(2)
+2 >Emitted(41, 2) Source(3, 2) + SourceIndex(2)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -699,10 +709,10 @@ sourceFile:../../../second/second_part1.ts
   >     
   >         f();
   >     }
-1->Emitted(40, 1) Source(5, 1) + SourceIndex(3)
-2 >Emitted(40, 5) Source(5, 11) + SourceIndex(3)
-3 >Emitted(40, 6) Source(5, 12) + SourceIndex(3)
-4 >Emitted(40, 7) Source(11, 2) + SourceIndex(3)
+1->Emitted(42, 1) Source(5, 1) + SourceIndex(3)
+2 >Emitted(42, 5) Source(5, 11) + SourceIndex(3)
+3 >Emitted(42, 6) Source(5, 12) + SourceIndex(3)
+4 >Emitted(42, 7) Source(11, 2) + SourceIndex(3)
 ---
 >>>(function (N) {
 1->
@@ -712,9 +722,9 @@ sourceFile:../../../second/second_part1.ts
 1->
 2 >namespace 
 3 >           N
-1->Emitted(41, 1) Source(5, 1) + SourceIndex(3)
-2 >Emitted(41, 12) Source(5, 11) + SourceIndex(3)
-3 >Emitted(41, 13) Source(5, 12) + SourceIndex(3)
+1->Emitted(43, 1) Source(5, 1) + SourceIndex(3)
+2 >Emitted(43, 12) Source(5, 11) + SourceIndex(3)
+3 >Emitted(43, 13) Source(5, 12) + SourceIndex(3)
 ---
 >>>    function f() {
 1->^^^^
@@ -725,9 +735,9 @@ sourceFile:../../../second/second_part1.ts
   >    
 2 >    function 
 3 >             f
-1->Emitted(42, 5) Source(6, 5) + SourceIndex(3)
-2 >Emitted(42, 14) Source(6, 14) + SourceIndex(3)
-3 >Emitted(42, 15) Source(6, 15) + SourceIndex(3)
+1->Emitted(44, 5) Source(6, 5) + SourceIndex(3)
+2 >Emitted(44, 14) Source(6, 14) + SourceIndex(3)
+3 >Emitted(44, 15) Source(6, 15) + SourceIndex(3)
 ---
 >>>        console.log('testing');
 1->^^^^^^^^
@@ -747,14 +757,14 @@ sourceFile:../../../second/second_part1.ts
 6 >                    'testing'
 7 >                             )
 8 >                              ;
-1->Emitted(43, 9) Source(7, 9) + SourceIndex(3)
-2 >Emitted(43, 16) Source(7, 16) + SourceIndex(3)
-3 >Emitted(43, 17) Source(7, 17) + SourceIndex(3)
-4 >Emitted(43, 20) Source(7, 20) + SourceIndex(3)
-5 >Emitted(43, 21) Source(7, 21) + SourceIndex(3)
-6 >Emitted(43, 30) Source(7, 30) + SourceIndex(3)
-7 >Emitted(43, 31) Source(7, 31) + SourceIndex(3)
-8 >Emitted(43, 32) Source(7, 32) + SourceIndex(3)
+1->Emitted(45, 9) Source(7, 9) + SourceIndex(3)
+2 >Emitted(45, 16) Source(7, 16) + SourceIndex(3)
+3 >Emitted(45, 17) Source(7, 17) + SourceIndex(3)
+4 >Emitted(45, 20) Source(7, 20) + SourceIndex(3)
+5 >Emitted(45, 21) Source(7, 21) + SourceIndex(3)
+6 >Emitted(45, 30) Source(7, 30) + SourceIndex(3)
+7 >Emitted(45, 31) Source(7, 31) + SourceIndex(3)
+8 >Emitted(45, 32) Source(7, 32) + SourceIndex(3)
 ---
 >>>    }
 1 >^^^^
@@ -763,8 +773,8 @@ sourceFile:../../../second/second_part1.ts
 1 >
   >    
 2 >    }
-1 >Emitted(44, 5) Source(8, 5) + SourceIndex(3)
-2 >Emitted(44, 6) Source(8, 6) + SourceIndex(3)
+1 >Emitted(46, 5) Source(8, 5) + SourceIndex(3)
+2 >Emitted(46, 6) Source(8, 6) + SourceIndex(3)
 ---
 >>>    f();
 1->^^^^
@@ -778,10 +788,10 @@ sourceFile:../../../second/second_part1.ts
 2 >    f
 3 >     ()
 4 >       ;
-1->Emitted(45, 5) Source(10, 5) + SourceIndex(3)
-2 >Emitted(45, 6) Source(10, 6) + SourceIndex(3)
-3 >Emitted(45, 8) Source(10, 8) + SourceIndex(3)
-4 >Emitted(45, 9) Source(10, 9) + SourceIndex(3)
+1->Emitted(47, 5) Source(10, 5) + SourceIndex(3)
+2 >Emitted(47, 6) Source(10, 6) + SourceIndex(3)
+3 >Emitted(47, 8) Source(10, 8) + SourceIndex(3)
+4 >Emitted(47, 9) Source(10, 9) + SourceIndex(3)
 ---
 >>>})(N || (N = {}));
 1->
@@ -806,13 +816,13 @@ sourceFile:../../../second/second_part1.ts
   >          
   >              f();
   >          }
-1->Emitted(46, 1) Source(11, 1) + SourceIndex(3)
-2 >Emitted(46, 2) Source(11, 2) + SourceIndex(3)
-3 >Emitted(46, 4) Source(5, 11) + SourceIndex(3)
-4 >Emitted(46, 5) Source(5, 12) + SourceIndex(3)
-5 >Emitted(46, 10) Source(5, 11) + SourceIndex(3)
-6 >Emitted(46, 11) Source(5, 12) + SourceIndex(3)
-7 >Emitted(46, 19) Source(11, 2) + SourceIndex(3)
+1->Emitted(48, 1) Source(11, 1) + SourceIndex(3)
+2 >Emitted(48, 2) Source(11, 2) + SourceIndex(3)
+3 >Emitted(48, 4) Source(5, 11) + SourceIndex(3)
+4 >Emitted(48, 5) Source(5, 12) + SourceIndex(3)
+5 >Emitted(48, 10) Source(5, 11) + SourceIndex(3)
+6 >Emitted(48, 11) Source(5, 12) + SourceIndex(3)
+7 >Emitted(48, 19) Source(11, 2) + SourceIndex(3)
 ---
 >>>function secondsecond_part1Spread() {
 1->
@@ -823,9 +833,9 @@ sourceFile:../../../second/second_part1.ts
   >
 2 >function 
 3 >         secondsecond_part1Spread
-1->Emitted(47, 1) Source(13, 1) + SourceIndex(3)
-2 >Emitted(47, 10) Source(13, 10) + SourceIndex(3)
-3 >Emitted(47, 34) Source(13, 34) + SourceIndex(3)
+1->Emitted(49, 1) Source(13, 1) + SourceIndex(3)
+2 >Emitted(49, 10) Source(13, 10) + SourceIndex(3)
+3 >Emitted(49, 34) Source(13, 34) + SourceIndex(3)
 ---
 >>>    var b = [];
 1 >^^^^
@@ -833,8 +843,8 @@ sourceFile:../../../second/second_part1.ts
 3 >               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >(
 2 >    ...b: number[]
-1 >Emitted(48, 5) Source(13, 35) + SourceIndex(3)
-2 >Emitted(48, 16) Source(13, 49) + SourceIndex(3)
+1 >Emitted(50, 5) Source(13, 35) + SourceIndex(3)
+2 >Emitted(50, 16) Source(13, 49) + SourceIndex(3)
 ---
 >>>    for (var _i = 0; _i < arguments.length; _i++) {
 1->^^^^^^^^^
@@ -849,20 +859,20 @@ sourceFile:../../../second/second_part1.ts
 4 >                     ...b: number[]
 5 >                                          
 6 >                                            ...b: number[]
-1->Emitted(49, 10) Source(13, 35) + SourceIndex(3)
-2 >Emitted(49, 20) Source(13, 49) + SourceIndex(3)
-3 >Emitted(49, 22) Source(13, 35) + SourceIndex(3)
-4 >Emitted(49, 43) Source(13, 49) + SourceIndex(3)
-5 >Emitted(49, 45) Source(13, 35) + SourceIndex(3)
-6 >Emitted(49, 49) Source(13, 49) + SourceIndex(3)
+1->Emitted(51, 10) Source(13, 35) + SourceIndex(3)
+2 >Emitted(51, 20) Source(13, 49) + SourceIndex(3)
+3 >Emitted(51, 22) Source(13, 35) + SourceIndex(3)
+4 >Emitted(51, 43) Source(13, 49) + SourceIndex(3)
+5 >Emitted(51, 45) Source(13, 35) + SourceIndex(3)
+6 >Emitted(51, 49) Source(13, 49) + SourceIndex(3)
 ---
 >>>        b[_i] = arguments[_i];
 1 >^^^^^^^^
 2 >        ^^^^^^^^^^^^^^^^^^^^^^
 1 >
 2 >        ...b: number[]
-1 >Emitted(50, 9) Source(13, 35) + SourceIndex(3)
-2 >Emitted(50, 31) Source(13, 49) + SourceIndex(3)
+1 >Emitted(52, 9) Source(13, 35) + SourceIndex(3)
+2 >Emitted(52, 31) Source(13, 49) + SourceIndex(3)
 ---
 >>>    }
 >>>}
@@ -871,8 +881,8 @@ sourceFile:../../../second/second_part1.ts
 3 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >) { 
 2 >}
-1 >Emitted(52, 1) Source(13, 53) + SourceIndex(3)
-2 >Emitted(52, 2) Source(13, 54) + SourceIndex(3)
+1 >Emitted(54, 1) Source(13, 53) + SourceIndex(3)
+2 >Emitted(54, 2) Source(13, 54) + SourceIndex(3)
 ---
 >>>secondsecond_part1Spread.apply(void 0, __spread([10, 20, 30]));
 1->
@@ -898,17 +908,17 @@ sourceFile:../../../second/second_part1.ts
 9 >                                                         30
 10>                                                           ]
 11>                                                            );
-1->Emitted(53, 1) Source(14, 1) + SourceIndex(3)
-2 >Emitted(53, 25) Source(14, 25) + SourceIndex(3)
-3 >Emitted(53, 49) Source(14, 29) + SourceIndex(3)
-4 >Emitted(53, 50) Source(14, 30) + SourceIndex(3)
-5 >Emitted(53, 52) Source(14, 32) + SourceIndex(3)
-6 >Emitted(53, 54) Source(14, 34) + SourceIndex(3)
-7 >Emitted(53, 56) Source(14, 36) + SourceIndex(3)
-8 >Emitted(53, 58) Source(14, 38) + SourceIndex(3)
-9 >Emitted(53, 60) Source(14, 40) + SourceIndex(3)
-10>Emitted(53, 61) Source(14, 41) + SourceIndex(3)
-11>Emitted(53, 64) Source(14, 43) + SourceIndex(3)
+1->Emitted(55, 1) Source(14, 1) + SourceIndex(3)
+2 >Emitted(55, 25) Source(14, 25) + SourceIndex(3)
+3 >Emitted(55, 49) Source(14, 29) + SourceIndex(3)
+4 >Emitted(55, 50) Source(14, 30) + SourceIndex(3)
+5 >Emitted(55, 52) Source(14, 32) + SourceIndex(3)
+6 >Emitted(55, 54) Source(14, 34) + SourceIndex(3)
+7 >Emitted(55, 56) Source(14, 36) + SourceIndex(3)
+8 >Emitted(55, 58) Source(14, 38) + SourceIndex(3)
+9 >Emitted(55, 60) Source(14, 40) + SourceIndex(3)
+10>Emitted(55, 61) Source(14, 41) + SourceIndex(3)
+11>Emitted(55, 64) Source(14, 43) + SourceIndex(3)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -918,13 +928,13 @@ sourceFile:../../../second/second_part2.ts
 1 >
 2 >^^^^^^^^^^^^^^^^^^^->
 1 >
-1 >Emitted(54, 1) Source(1, 1) + SourceIndex(4)
+1 >Emitted(56, 1) Source(1, 1) + SourceIndex(4)
 ---
 >>>    function C() {
 1->^^^^
 2 >    ^^->
 1->
-1->Emitted(55, 5) Source(1, 1) + SourceIndex(4)
+1->Emitted(57, 5) Source(1, 1) + SourceIndex(4)
 ---
 >>>    }
 1->^^^^
@@ -936,8 +946,8 @@ sourceFile:../../../second/second_part2.ts
   >    }
   >
 2 >    }
-1->Emitted(56, 5) Source(5, 1) + SourceIndex(4)
-2 >Emitted(56, 6) Source(5, 2) + SourceIndex(4)
+1->Emitted(58, 5) Source(5, 1) + SourceIndex(4)
+2 >Emitted(58, 6) Source(5, 2) + SourceIndex(4)
 ---
 >>>    C.prototype.doSomething = function () {
 1->^^^^
@@ -947,9 +957,9 @@ sourceFile:../../../second/second_part2.ts
 1->
 2 >    doSomething
 3 >                           
-1->Emitted(57, 5) Source(2, 5) + SourceIndex(4)
-2 >Emitted(57, 28) Source(2, 16) + SourceIndex(4)
-3 >Emitted(57, 31) Source(2, 5) + SourceIndex(4)
+1->Emitted(59, 5) Source(2, 5) + SourceIndex(4)
+2 >Emitted(59, 28) Source(2, 16) + SourceIndex(4)
+3 >Emitted(59, 31) Source(2, 5) + SourceIndex(4)
 ---
 >>>        console.log("something got done");
 1->^^^^^^^^
@@ -969,14 +979,14 @@ sourceFile:../../../second/second_part2.ts
 6 >                    "something got done"
 7 >                                        )
 8 >                                         ;
-1->Emitted(58, 9) Source(3, 9) + SourceIndex(4)
-2 >Emitted(58, 16) Source(3, 16) + SourceIndex(4)
-3 >Emitted(58, 17) Source(3, 17) + SourceIndex(4)
-4 >Emitted(58, 20) Source(3, 20) + SourceIndex(4)
-5 >Emitted(58, 21) Source(3, 21) + SourceIndex(4)
-6 >Emitted(58, 41) Source(3, 41) + SourceIndex(4)
-7 >Emitted(58, 42) Source(3, 42) + SourceIndex(4)
-8 >Emitted(58, 43) Source(3, 43) + SourceIndex(4)
+1->Emitted(60, 9) Source(3, 9) + SourceIndex(4)
+2 >Emitted(60, 16) Source(3, 16) + SourceIndex(4)
+3 >Emitted(60, 17) Source(3, 17) + SourceIndex(4)
+4 >Emitted(60, 20) Source(3, 20) + SourceIndex(4)
+5 >Emitted(60, 21) Source(3, 21) + SourceIndex(4)
+6 >Emitted(60, 41) Source(3, 41) + SourceIndex(4)
+7 >Emitted(60, 42) Source(3, 42) + SourceIndex(4)
+8 >Emitted(60, 43) Source(3, 43) + SourceIndex(4)
 ---
 >>>    };
 1 >^^^^
@@ -985,8 +995,8 @@ sourceFile:../../../second/second_part2.ts
 1 >
   >    
 2 >    }
-1 >Emitted(59, 5) Source(4, 5) + SourceIndex(4)
-2 >Emitted(59, 6) Source(4, 6) + SourceIndex(4)
+1 >Emitted(61, 5) Source(4, 5) + SourceIndex(4)
+2 >Emitted(61, 6) Source(4, 6) + SourceIndex(4)
 ---
 >>>    return C;
 1->^^^^
@@ -994,8 +1004,8 @@ sourceFile:../../../second/second_part2.ts
 1->
   >
 2 >    }
-1->Emitted(60, 5) Source(5, 1) + SourceIndex(4)
-2 >Emitted(60, 13) Source(5, 2) + SourceIndex(4)
+1->Emitted(62, 5) Source(5, 1) + SourceIndex(4)
+2 >Emitted(62, 13) Source(5, 2) + SourceIndex(4)
 ---
 >>>}());
 1 >
@@ -1011,10 +1021,10 @@ sourceFile:../../../second/second_part2.ts
   >         console.log("something got done");
   >     }
   > }
-1 >Emitted(61, 1) Source(5, 1) + SourceIndex(4)
-2 >Emitted(61, 2) Source(5, 2) + SourceIndex(4)
-3 >Emitted(61, 2) Source(1, 1) + SourceIndex(4)
-4 >Emitted(61, 6) Source(5, 2) + SourceIndex(4)
+1 >Emitted(63, 1) Source(5, 1) + SourceIndex(4)
+2 >Emitted(63, 2) Source(5, 2) + SourceIndex(4)
+3 >Emitted(63, 2) Source(1, 1) + SourceIndex(4)
+4 >Emitted(63, 6) Source(5, 2) + SourceIndex(4)
 ---
 -------------------------------------------------------------------
 emittedFile:/src/third/thirdjs/output/third-output.js
@@ -1038,14 +1048,14 @@ sourceFile:../../third_part1.ts
 6 >            C
 7 >             ()
 8 >               ;
-1->Emitted(62, 1) Source(1, 1) + SourceIndex(5)
-2 >Emitted(62, 5) Source(1, 5) + SourceIndex(5)
-3 >Emitted(62, 6) Source(1, 6) + SourceIndex(5)
-4 >Emitted(62, 9) Source(1, 9) + SourceIndex(5)
-5 >Emitted(62, 13) Source(1, 13) + SourceIndex(5)
-6 >Emitted(62, 14) Source(1, 14) + SourceIndex(5)
-7 >Emitted(62, 16) Source(1, 16) + SourceIndex(5)
-8 >Emitted(62, 17) Source(1, 17) + SourceIndex(5)
+1->Emitted(64, 1) Source(1, 1) + SourceIndex(5)
+2 >Emitted(64, 5) Source(1, 5) + SourceIndex(5)
+3 >Emitted(64, 6) Source(1, 6) + SourceIndex(5)
+4 >Emitted(64, 9) Source(1, 9) + SourceIndex(5)
+5 >Emitted(64, 13) Source(1, 13) + SourceIndex(5)
+6 >Emitted(64, 14) Source(1, 14) + SourceIndex(5)
+7 >Emitted(64, 16) Source(1, 16) + SourceIndex(5)
+8 >Emitted(64, 17) Source(1, 17) + SourceIndex(5)
 ---
 >>>c.doSomething();
 1->
@@ -1062,12 +1072,12 @@ sourceFile:../../third_part1.ts
 4 >  doSomething
 5 >             ()
 6 >               ;
-1->Emitted(63, 1) Source(2, 1) + SourceIndex(5)
-2 >Emitted(63, 2) Source(2, 2) + SourceIndex(5)
-3 >Emitted(63, 3) Source(2, 3) + SourceIndex(5)
-4 >Emitted(63, 14) Source(2, 14) + SourceIndex(5)
-5 >Emitted(63, 16) Source(2, 16) + SourceIndex(5)
-6 >Emitted(63, 17) Source(2, 17) + SourceIndex(5)
+1->Emitted(65, 1) Source(2, 1) + SourceIndex(5)
+2 >Emitted(65, 2) Source(2, 2) + SourceIndex(5)
+3 >Emitted(65, 3) Source(2, 3) + SourceIndex(5)
+4 >Emitted(65, 14) Source(2, 14) + SourceIndex(5)
+5 >Emitted(65, 16) Source(2, 16) + SourceIndex(5)
+6 >Emitted(65, 17) Source(2, 17) + SourceIndex(5)
 ---
 >>>function forthirdthird_part1Rest() {
 1->
@@ -1078,9 +1088,9 @@ sourceFile:../../third_part1.ts
   >
 2 >function 
 3 >         forthirdthird_part1Rest
-1->Emitted(64, 1) Source(3, 1) + SourceIndex(5)
-2 >Emitted(64, 10) Source(3, 10) + SourceIndex(5)
-3 >Emitted(64, 33) Source(3, 33) + SourceIndex(5)
+1->Emitted(66, 1) Source(3, 1) + SourceIndex(5)
+2 >Emitted(66, 10) Source(3, 10) + SourceIndex(5)
+3 >Emitted(66, 33) Source(3, 33) + SourceIndex(5)
 ---
 >>>    var _a = { a: 10, b: 30, yy: 30 }, b = _a.b, rest = __rest(_a, ["b"]);
 1->^^^^
@@ -1100,14 +1110,14 @@ sourceFile:../../third_part1.ts
 6 >                                               , 
 7 >                                                 ...rest } = { a: 10, b: 30, yy: 30 }
 8 >                                                                         ;
-1->Emitted(65, 5) Source(4, 1) + SourceIndex(5)
-2 >Emitted(65, 9) Source(4, 7) + SourceIndex(5)
-3 >Emitted(65, 38) Source(4, 48) + SourceIndex(5)
-4 >Emitted(65, 40) Source(4, 9) + SourceIndex(5)
-5 >Emitted(65, 48) Source(4, 10) + SourceIndex(5)
-6 >Emitted(65, 50) Source(4, 12) + SourceIndex(5)
-7 >Emitted(65, 74) Source(4, 48) + SourceIndex(5)
-8 >Emitted(65, 75) Source(4, 49) + SourceIndex(5)
+1->Emitted(67, 5) Source(4, 1) + SourceIndex(5)
+2 >Emitted(67, 9) Source(4, 7) + SourceIndex(5)
+3 >Emitted(67, 38) Source(4, 48) + SourceIndex(5)
+4 >Emitted(67, 40) Source(4, 9) + SourceIndex(5)
+5 >Emitted(67, 48) Source(4, 10) + SourceIndex(5)
+6 >Emitted(67, 50) Source(4, 12) + SourceIndex(5)
+7 >Emitted(67, 74) Source(4, 48) + SourceIndex(5)
+8 >Emitted(67, 75) Source(4, 49) + SourceIndex(5)
 ---
 >>>}
 1 >
@@ -1116,8 +1126,8 @@ sourceFile:../../third_part1.ts
 1 >
   >
 2 >}
-1 >Emitted(66, 1) Source(5, 1) + SourceIndex(5)
-2 >Emitted(66, 2) Source(5, 2) + SourceIndex(5)
+1 >Emitted(68, 1) Source(5, 1) + SourceIndex(5)
+2 >Emitted(68, 2) Source(5, 2) + SourceIndex(5)
 ---
 >>>//# sourceMappingURL=third-output.js.map
 
@@ -1132,51 +1142,51 @@ sourceFile:../../third_part1.ts
       "sections": [
         {
           "pos": 0,
-          "end": 415,
+          "end": 500,
           "kind": "emitHelpers",
           "data": "typescript:rest"
         },
         {
-          "pos": 417,
-          "end": 921,
+          "pos": 502,
+          "end": 1006,
           "kind": "emitHelpers",
           "data": "typescript:read"
         },
         {
-          "pos": 923,
-          "end": 1093,
+          "pos": 1008,
+          "end": 1178,
           "kind": "emitHelpers",
           "data": "typescript:spread"
         },
         {
-          "pos": 1095,
-          "end": 1339,
+          "pos": 1180,
+          "end": 1424,
           "kind": "prepend",
           "data": "/src/first/bin/first-output.js",
           "texts": [
             {
-              "pos": 1095,
-              "end": 1339,
+              "pos": 1180,
+              "end": 1424,
               "kind": "text"
             }
           ]
         },
         {
-          "pos": 1339,
-          "end": 1840,
+          "pos": 1424,
+          "end": 1925,
           "kind": "prepend",
           "data": "/src/2/second-output.js",
           "texts": [
             {
-              "pos": 1339,
-              "end": 1840,
+              "pos": 1424,
+              "end": 1925,
               "kind": "text"
             }
           ]
         },
         {
-          "pos": 1840,
-          "end": 1993,
+          "pos": 1925,
+          "end": 2078,
           "kind": "text"
         }
       ],
@@ -1229,18 +1239,20 @@ sourceFile:../../third_part1.ts
 ======================================================================
 File:: /src/third/thirdjs/output/third-output.js
 ----------------------------------------------------------------------
-emitHelpers: (0-415):: typescript:rest
+emitHelpers: (0-500):: typescript:rest
 var __rest = (this && this.__rest) || function (s, e) {
     var t = {};
     for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
         t[p] = s[p];
     if (s != null && typeof Object.getOwnPropertySymbols === "function")
-        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-            t[p[i]] = s[p[i]];
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
     return t;
 };
 ----------------------------------------------------------------------
-emitHelpers: (417-921):: typescript:read
+emitHelpers: (502-1006):: typescript:read
 var __read = (this && this.__read) || function (o, n) {
     var m = typeof Symbol === "function" && o[Symbol.iterator];
     if (!m) return o;
@@ -1258,15 +1270,15 @@ var __read = (this && this.__read) || function (o, n) {
     return ar;
 };
 ----------------------------------------------------------------------
-emitHelpers: (923-1093):: typescript:spread
+emitHelpers: (1008-1178):: typescript:spread
 var __spread = (this && this.__spread) || function () {
     for (var ar = [], i = 0; i < arguments.length; i++) ar = ar.concat(__read(arguments[i]));
     return ar;
 };
 ----------------------------------------------------------------------
-prepend: (1095-1339):: /src/first/bin/first-output.js texts:: 1
+prepend: (1180-1424):: /src/first/bin/first-output.js texts:: 1
 >>--------------------------------------------------------------------
-text: (1095-1339)
+text: (1180-1424)
 var s = "Hello, world";
 console.log(s);
 function forfirstfirst_PART1Rest() {
@@ -1279,9 +1291,9 @@ function f() {
 }
 
 ----------------------------------------------------------------------
-prepend: (1339-1840):: /src/2/second-output.js texts:: 1
+prepend: (1424-1925):: /src/2/second-output.js texts:: 1
 >>--------------------------------------------------------------------
-text: (1339-1840)
+text: (1424-1925)
 var N;
 (function (N) {
     function f() {
@@ -1306,7 +1318,7 @@ var C = (function () {
 }());
 
 ----------------------------------------------------------------------
-text: (1840-1993)
+text: (1925-2078)
 var c = new C();
 c.doSomething();
 function forthirdthird_part1Rest() {