/*! *****************************************************************************
Copyright (c) Microsoft Corporation. All rights reserved. 
Licensed under the Apache License, Version 2.0 (the "License"); you may not use
this file except in compliance with the License. You may obtain a copy of the
License at http://www.apache.org/licenses/LICENSE-2.0  
 
THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE, 
MERCHANTABLITY OR NON-INFRINGEMENT. 
 
See the Apache Version 2.0 License for specific language governing permissions
and limitations under the License.
***************************************************************************** */

declare namespace ts {
    interface MapLike<T> {
        [index: string]: T;
    }
    interface Map<T> extends MapLike<T> {
        __mapBrand: any;
    }
    type Path = string & {
        __pathBrand: any;
    };
    interface FileMap<T> {
        get(fileName: Path): T;
        set(fileName: Path, value: T): void;
        contains(fileName: Path): boolean;
        remove(fileName: Path): void;
        forEachValue(f: (key: Path, v: T) => void): void;
        getKeys(): Path[];
        clear(): void;
    }
    interface TextRange {
        pos: number;
        end: number;
    }
    enum SyntaxKind {
        Unknown = 0,
        EndOfFileToken = 1,
        SingleLineCommentTrivia = 2,
        MultiLineCommentTrivia = 3,
        NewLineTrivia = 4,
        WhitespaceTrivia = 5,
        ShebangTrivia = 6,
        ConflictMarkerTrivia = 7,
        NumericLiteral = 8,
        StringLiteral = 9,
        JsxText = 10,
        RegularExpressionLiteral = 11,
        NoSubstitutionTemplateLiteral = 12,
        TemplateHead = 13,
        TemplateMiddle = 14,
        TemplateTail = 15,
        OpenBraceToken = 16,
        CloseBraceToken = 17,
        OpenParenToken = 18,
        CloseParenToken = 19,
        OpenBracketToken = 20,
        CloseBracketToken = 21,
        DotToken = 22,
        DotDotDotToken = 23,
        SemicolonToken = 24,
        CommaToken = 25,
        LessThanToken = 26,
        LessThanSlashToken = 27,
        GreaterThanToken = 28,
        LessThanEqualsToken = 29,
        GreaterThanEqualsToken = 30,
        EqualsEqualsToken = 31,
        ExclamationEqualsToken = 32,
        EqualsEqualsEqualsToken = 33,
        ExclamationEqualsEqualsToken = 34,
        EqualsGreaterThanToken = 35,
        PlusToken = 36,
        MinusToken = 37,
        AsteriskToken = 38,
        AsteriskAsteriskToken = 39,
        SlashToken = 40,
        PercentToken = 41,
        PlusPlusToken = 42,
        MinusMinusToken = 43,
        LessThanLessThanToken = 44,
        GreaterThanGreaterThanToken = 45,
        GreaterThanGreaterThanGreaterThanToken = 46,
        AmpersandToken = 47,
        BarToken = 48,
        CaretToken = 49,
        ExclamationToken = 50,
        TildeToken = 51,
        AmpersandAmpersandToken = 52,
        BarBarToken = 53,
        QuestionToken = 54,
        ColonToken = 55,
        AtToken = 56,
        EqualsToken = 57,
        PlusEqualsToken = 58,
        MinusEqualsToken = 59,
        AsteriskEqualsToken = 60,
        AsteriskAsteriskEqualsToken = 61,
        SlashEqualsToken = 62,
        PercentEqualsToken = 63,
        LessThanLessThanEqualsToken = 64,
        GreaterThanGreaterThanEqualsToken = 65,
        GreaterThanGreaterThanGreaterThanEqualsToken = 66,
        AmpersandEqualsToken = 67,
        BarEqualsToken = 68,
        CaretEqualsToken = 69,
        Identifier = 70,
        BreakKeyword = 71,
        CaseKeyword = 72,
        CatchKeyword = 73,
        ClassKeyword = 74,
        ConstKeyword = 75,
        ContinueKeyword = 76,
        DebuggerKeyword = 77,
        DefaultKeyword = 78,
        DeleteKeyword = 79,
        DoKeyword = 80,
        ElseKeyword = 81,
        EnumKeyword = 82,
        ExportKeyword = 83,
        ExtendsKeyword = 84,
        FalseKeyword = 85,
        FinallyKeyword = 86,
        ForKeyword = 87,
        FunctionKeyword = 88,
        IfKeyword = 89,
        ImportKeyword = 90,
        InKeyword = 91,
        InstanceOfKeyword = 92,
        NewKeyword = 93,
        NullKeyword = 94,
        ReturnKeyword = 95,
        SuperKeyword = 96,
        SwitchKeyword = 97,
        ThisKeyword = 98,
        ThrowKeyword = 99,
        TrueKeyword = 100,
        TryKeyword = 101,
        TypeOfKeyword = 102,
        VarKeyword = 103,
        VoidKeyword = 104,
        WhileKeyword = 105,
        WithKeyword = 106,
        ImplementsKeyword = 107,
        InterfaceKeyword = 108,
        LetKeyword = 109,
        PackageKeyword = 110,
        PrivateKeyword = 111,
        ProtectedKeyword = 112,
        PublicKeyword = 113,
        StaticKeyword = 114,
        YieldKeyword = 115,
        AbstractKeyword = 116,
        AsKeyword = 117,
        AnyKeyword = 118,
        AsyncKeyword = 119,
        AwaitKeyword = 120,
        BooleanKeyword = 121,
        ConstructorKeyword = 122,
        DeclareKeyword = 123,
        GetKeyword = 124,
        IsKeyword = 125,
        KeyOfKeyword = 126,
        ModuleKeyword = 127,
        NamespaceKeyword = 128,
        NeverKeyword = 129,
        ReadonlyKeyword = 130,
        RequireKeyword = 131,
        NumberKeyword = 132,
        SetKeyword = 133,
        StringKeyword = 134,
        SymbolKeyword = 135,
        TypeKeyword = 136,
        UndefinedKeyword = 137,
        FromKeyword = 138,
        GlobalKeyword = 139,
        OfKeyword = 140,
        QualifiedName = 141,
        ComputedPropertyName = 142,
        TypeParameter = 143,
        Parameter = 144,
        Decorator = 145,
        PropertySignature = 146,
        PropertyDeclaration = 147,
        MethodSignature = 148,
        MethodDeclaration = 149,
        Constructor = 150,
        GetAccessor = 151,
        SetAccessor = 152,
        CallSignature = 153,
        ConstructSignature = 154,
        IndexSignature = 155,
        TypePredicate = 156,
        TypeReference = 157,
        FunctionType = 158,
        ConstructorType = 159,
        TypeQuery = 160,
        TypeLiteral = 161,
        ArrayType = 162,
        TupleType = 163,
        UnionType = 164,
        IntersectionType = 165,
        ParenthesizedType = 166,
        ThisType = 167,
        TypeOperator = 168,
        IndexedAccessType = 169,
        MappedType = 170,
        LiteralType = 171,
        ObjectBindingPattern = 172,
        ArrayBindingPattern = 173,
        BindingElement = 174,
        ArrayLiteralExpression = 175,
        ObjectLiteralExpression = 176,
        PropertyAccessExpression = 177,
        ElementAccessExpression = 178,
        CallExpression = 179,
        NewExpression = 180,
        TaggedTemplateExpression = 181,
        TypeAssertionExpression = 182,
        ParenthesizedExpression = 183,
        FunctionExpression = 184,
        ArrowFunction = 185,
        DeleteExpression = 186,
        TypeOfExpression = 187,
        VoidExpression = 188,
        AwaitExpression = 189,
        PrefixUnaryExpression = 190,
        PostfixUnaryExpression = 191,
        BinaryExpression = 192,
        ConditionalExpression = 193,
        TemplateExpression = 194,
        YieldExpression = 195,
        SpreadElement = 196,
        ClassExpression = 197,
        OmittedExpression = 198,
        ExpressionWithTypeArguments = 199,
        AsExpression = 200,
        NonNullExpression = 201,
        TemplateSpan = 202,
        SemicolonClassElement = 203,
        Block = 204,
        VariableStatement = 205,
        EmptyStatement = 206,
        ExpressionStatement = 207,
        IfStatement = 208,
        DoStatement = 209,
        WhileStatement = 210,
        ForStatement = 211,
        ForInStatement = 212,
        ForOfStatement = 213,
        ContinueStatement = 214,
        BreakStatement = 215,
        ReturnStatement = 216,
        WithStatement = 217,
        SwitchStatement = 218,
        LabeledStatement = 219,
        ThrowStatement = 220,
        TryStatement = 221,
        DebuggerStatement = 222,
        VariableDeclaration = 223,
        VariableDeclarationList = 224,
        FunctionDeclaration = 225,
        ClassDeclaration = 226,
        InterfaceDeclaration = 227,
        TypeAliasDeclaration = 228,
        EnumDeclaration = 229,
        ModuleDeclaration = 230,
        ModuleBlock = 231,
        CaseBlock = 232,
        NamespaceExportDeclaration = 233,
        ImportEqualsDeclaration = 234,
        ImportDeclaration = 235,
        ImportClause = 236,
        NamespaceImport = 237,
        NamedImports = 238,
        ImportSpecifier = 239,
        ExportAssignment = 240,
        ExportDeclaration = 241,
        NamedExports = 242,
        ExportSpecifier = 243,
        MissingDeclaration = 244,
        ExternalModuleReference = 245,
        JsxElement = 246,
        JsxSelfClosingElement = 247,
        JsxOpeningElement = 248,
        JsxClosingElement = 249,
        JsxAttribute = 250,
        JsxSpreadAttribute = 251,
        JsxExpression = 252,
        CaseClause = 253,
        DefaultClause = 254,
        HeritageClause = 255,
        CatchClause = 256,
        PropertyAssignment = 257,
        ShorthandPropertyAssignment = 258,
        SpreadAssignment = 259,
        EnumMember = 260,
        SourceFile = 261,
        JSDocTypeExpression = 262,
        JSDocAllType = 263,
        JSDocUnknownType = 264,
        JSDocArrayType = 265,
        JSDocUnionType = 266,
        JSDocTupleType = 267,
        JSDocNullableType = 268,
        JSDocNonNullableType = 269,
        JSDocRecordType = 270,
        JSDocRecordMember = 271,
        JSDocTypeReference = 272,
        JSDocOptionalType = 273,
        JSDocFunctionType = 274,
        JSDocVariadicType = 275,
        JSDocConstructorType = 276,
        JSDocThisType = 277,
        JSDocComment = 278,
        JSDocTag = 279,
        JSDocAugmentsTag = 280,
        JSDocParameterTag = 281,
        JSDocReturnTag = 282,
        JSDocTypeTag = 283,
        JSDocTemplateTag = 284,
        JSDocTypedefTag = 285,
        JSDocPropertyTag = 286,
        JSDocTypeLiteral = 287,
        JSDocLiteralType = 288,
        JSDocNullKeyword = 289,
        JSDocUndefinedKeyword = 290,
        JSDocNeverKeyword = 291,
        SyntaxList = 292,
        NotEmittedStatement = 293,
        PartiallyEmittedExpression = 294,
        MergeDeclarationMarker = 295,
        EndOfDeclarationMarker = 296,
        RawExpression = 297,
        Count = 298,
        FirstAssignment = 57,
        LastAssignment = 69,
        FirstCompoundAssignment = 58,
        LastCompoundAssignment = 69,
        FirstReservedWord = 71,
        LastReservedWord = 106,
        FirstKeyword = 71,
        LastKeyword = 140,
        FirstFutureReservedWord = 107,
        LastFutureReservedWord = 115,
        FirstTypeNode = 156,
        LastTypeNode = 171,
        FirstPunctuation = 16,
        LastPunctuation = 69,
        FirstToken = 0,
        LastToken = 140,
        FirstTriviaToken = 2,
        LastTriviaToken = 7,
        FirstLiteralToken = 8,
        LastLiteralToken = 12,
        FirstTemplateToken = 12,
        LastTemplateToken = 15,
        FirstBinaryOperator = 26,
        LastBinaryOperator = 69,
        FirstNode = 141,
        FirstJSDocNode = 262,
        LastJSDocNode = 288,
        FirstJSDocTagNode = 278,
        LastJSDocTagNode = 291,
    }
    enum NodeFlags {
        None = 0,
        Let = 1,
        Const = 2,
        NestedNamespace = 4,
        Synthesized = 8,
        Namespace = 16,
        ExportContext = 32,
        ContainsThis = 64,
        HasImplicitReturn = 128,
        HasExplicitReturn = 256,
        GlobalAugmentation = 512,
        HasAsyncFunctions = 1024,
        DisallowInContext = 2048,
        YieldContext = 4096,
        DecoratorContext = 8192,
        AwaitContext = 16384,
        ThisNodeHasError = 32768,
        JavaScriptFile = 65536,
        ThisNodeOrAnySubNodesHasError = 131072,
        HasAggregatedChildData = 262144,
        BlockScoped = 3,
        ReachabilityCheckFlags = 384,
        ReachabilityAndEmitFlags = 1408,
        ContextFlags = 96256,
        TypeExcludesFlags = 20480,
    }
    enum ModifierFlags {
        None = 0,
        Export = 1,
        Ambient = 2,
        Public = 4,
        Private = 8,
        Protected = 16,
        Static = 32,
        Readonly = 64,
        Abstract = 128,
        Async = 256,
        Default = 512,
        Const = 2048,
        HasComputedFlags = 536870912,
        AccessibilityModifier = 28,
        ParameterPropertyModifier = 92,
        NonPublicAccessibilityModifier = 24,
        TypeScriptModifier = 2270,
        ExportDefault = 513,
    }
    enum JsxFlags {
        None = 0,
        /** An element from a named property of the JSX.IntrinsicElements interface */
        IntrinsicNamedElement = 1,
        /** An element inferred from the string index signature of the JSX.IntrinsicElements interface */
        IntrinsicIndexedElement = 2,
        IntrinsicElement = 3,
    }
    interface Node extends TextRange {
        kind: SyntaxKind;
        flags: NodeFlags;
        decorators?: NodeArray<Decorator>;
        modifiers?: ModifiersArray;
        parent?: Node;
    }
    interface NodeArray<T extends Node> extends Array<T>, TextRange {
        hasTrailingComma?: boolean;
    }
    interface Token<TKind extends SyntaxKind> extends Node {
        kind: TKind;
    }
    type DotDotDotToken = Token<SyntaxKind.DotDotDotToken>;
    type QuestionToken = Token<SyntaxKind.QuestionToken>;
    type ColonToken = Token<SyntaxKind.ColonToken>;
    type EqualsToken = Token<SyntaxKind.EqualsToken>;
    type AsteriskToken = Token<SyntaxKind.AsteriskToken>;
    type EqualsGreaterThanToken = Token<SyntaxKind.EqualsGreaterThanToken>;
    type EndOfFileToken = Token<SyntaxKind.EndOfFileToken>;
    type AtToken = Token<SyntaxKind.AtToken>;
    type ReadonlyToken = Token<SyntaxKind.ReadonlyKeyword>;
    type Modifier = Token<SyntaxKind.AbstractKeyword> | Token<SyntaxKind.AsyncKeyword> | Token<SyntaxKind.ConstKeyword> | Token<SyntaxKind.DeclareKeyword> | Token<SyntaxKind.DefaultKeyword> | Token<SyntaxKind.ExportKeyword> | Token<SyntaxKind.PublicKeyword> | Token<SyntaxKind.PrivateKeyword> | Token<SyntaxKind.ProtectedKeyword> | Token<SyntaxKind.ReadonlyKeyword> | Token<SyntaxKind.StaticKeyword>;
    type ModifiersArray = NodeArray<Modifier>;
    interface Identifier extends PrimaryExpression {
        kind: SyntaxKind.Identifier;
        text: string;
        originalKeywordKind?: SyntaxKind;
        isInJSDocNamespace?: boolean;
    }
    interface TransientIdentifier extends Identifier {
        resolvedSymbol: Symbol;
    }
    interface QualifiedName extends Node {
        kind: SyntaxKind.QualifiedName;
        left: EntityName;
        right: Identifier;
    }
    type EntityName = Identifier | QualifiedName;
    type PropertyName = Identifier | StringLiteral | NumericLiteral | ComputedPropertyName;
    type DeclarationName = Identifier | StringLiteral | NumericLiteral | ComputedPropertyName | BindingPattern;
    interface Declaration extends Node {
        _declarationBrand: any;
        name?: DeclarationName;
    }
    interface DeclarationStatement extends Declaration, Statement {
        name?: Identifier | StringLiteral | NumericLiteral;
    }
    interface ComputedPropertyName extends Node {
        kind: SyntaxKind.ComputedPropertyName;
        expression: Expression;
    }
    interface Decorator extends Node {
        kind: SyntaxKind.Decorator;
        expression: LeftHandSideExpression;
    }
    interface TypeParameterDeclaration extends Declaration {
        kind: SyntaxKind.TypeParameter;
        name: Identifier;
        constraint?: TypeNode;
        expression?: Expression;
    }
    interface SignatureDeclaration extends Declaration {
        name?: PropertyName;
        typeParameters?: NodeArray<TypeParameterDeclaration>;
        parameters: NodeArray<ParameterDeclaration>;
        type?: TypeNode;
    }
    interface CallSignatureDeclaration extends SignatureDeclaration, TypeElement {
        kind: SyntaxKind.CallSignature;
    }
    interface ConstructSignatureDeclaration extends SignatureDeclaration, TypeElement {
        kind: SyntaxKind.ConstructSignature;
    }
    type BindingName = Identifier | BindingPattern;
    interface VariableDeclaration extends Declaration {
        kind: SyntaxKind.VariableDeclaration;
        parent?: VariableDeclarationList;
        name: BindingName;
        type?: TypeNode;
        initializer?: Expression;
    }
    interface VariableDeclarationList extends Node {
        kind: SyntaxKind.VariableDeclarationList;
        declarations: NodeArray<VariableDeclaration>;
    }
    interface ParameterDeclaration extends Declaration {
        kind: SyntaxKind.Parameter;
        dotDotDotToken?: DotDotDotToken;
        name: BindingName;
        questionToken?: QuestionToken;
        type?: TypeNode;
        initializer?: Expression;
    }
    interface BindingElement extends Declaration {
        kind: SyntaxKind.BindingElement;
        propertyName?: PropertyName;
        dotDotDotToken?: DotDotDotToken;
        name: BindingName;
        initializer?: Expression;
    }
    interface PropertySignature extends TypeElement {
        kind: SyntaxKind.PropertySignature | SyntaxKind.JSDocRecordMember;
        name: PropertyName;
        questionToken?: QuestionToken;
        type?: TypeNode;
        initializer?: Expression;
    }
    interface PropertyDeclaration extends ClassElement {
        kind: SyntaxKind.PropertyDeclaration;
        questionToken?: QuestionToken;
        name: PropertyName;
        type?: TypeNode;
        initializer?: Expression;
    }
    interface ObjectLiteralElement extends Declaration {
        _objectLiteralBrandBrand: any;
        name?: PropertyName;
    }
    type ObjectLiteralElementLike = PropertyAssignment | ShorthandPropertyAssignment | MethodDeclaration | AccessorDeclaration | SpreadAssignment;
    interface PropertyAssignment extends ObjectLiteralElement {
        kind: SyntaxKind.PropertyAssignment;
        name: PropertyName;
        questionToken?: QuestionToken;
        initializer: Expression;
    }
    interface ShorthandPropertyAssignment extends ObjectLiteralElement {
        kind: SyntaxKind.ShorthandPropertyAssignment;
        name: Identifier;
        questionToken?: QuestionToken;
        equalsToken?: Token<SyntaxKind.EqualsToken>;
        objectAssignmentInitializer?: Expression;
    }
    interface SpreadAssignment extends ObjectLiteralElement {
        kind: SyntaxKind.SpreadAssignment;
        expression: Expression;
    }
    interface VariableLikeDeclaration extends Declaration {
        propertyName?: PropertyName;
        dotDotDotToken?: DotDotDotToken;
        name: DeclarationName;
        questionToken?: QuestionToken;
        type?: TypeNode;
        initializer?: Expression;
    }
    interface PropertyLikeDeclaration extends Declaration {
        name: PropertyName;
    }
    interface ObjectBindingPattern extends Node {
        kind: SyntaxKind.ObjectBindingPattern;
        elements: NodeArray<BindingElement>;
    }
    interface ArrayBindingPattern extends Node {
        kind: SyntaxKind.ArrayBindingPattern;
        elements: NodeArray<ArrayBindingElement>;
    }
    type BindingPattern = ObjectBindingPattern | ArrayBindingPattern;
    type ArrayBindingElement = BindingElement | OmittedExpression;
    /**
     * Several node kinds share function-like features such as a signature,
     * a name, and a body. These nodes should extend FunctionLikeDeclaration.
     * Examples:
     * - FunctionDeclaration
     * - MethodDeclaration
     * - AccessorDeclaration
     */
    interface FunctionLikeDeclaration extends SignatureDeclaration {
        _functionLikeDeclarationBrand: any;
        asteriskToken?: AsteriskToken;
        questionToken?: QuestionToken;
        body?: Block | Expression;
    }
    interface FunctionDeclaration extends FunctionLikeDeclaration, DeclarationStatement {
        kind: SyntaxKind.FunctionDeclaration;
        name?: Identifier;
        body?: FunctionBody;
    }
    interface MethodSignature extends SignatureDeclaration, TypeElement {
        kind: SyntaxKind.MethodSignature;
        name: PropertyName;
    }
    interface MethodDeclaration extends FunctionLikeDeclaration, ClassElement, ObjectLiteralElement {
        kind: SyntaxKind.MethodDeclaration;
        name: PropertyName;
        body?: FunctionBody;
    }
    interface ConstructorDeclaration extends FunctionLikeDeclaration, ClassElement {
        kind: SyntaxKind.Constructor;
        body?: FunctionBody;
    }
    interface SemicolonClassElement extends ClassElement {
        kind: SyntaxKind.SemicolonClassElement;
    }
    interface GetAccessorDeclaration extends FunctionLikeDeclaration, ClassElement, ObjectLiteralElement {
        kind: SyntaxKind.GetAccessor;
        name: PropertyName;
        body: FunctionBody;
    }
    interface SetAccessorDeclaration extends FunctionLikeDeclaration, ClassElement, ObjectLiteralElement {
        kind: SyntaxKind.SetAccessor;
        name: PropertyName;
        body: FunctionBody;
    }
    type AccessorDeclaration = GetAccessorDeclaration | SetAccessorDeclaration;
    interface IndexSignatureDeclaration extends SignatureDeclaration, ClassElement, TypeElement {
        kind: SyntaxKind.IndexSignature;
    }
    interface TypeNode extends Node {
        _typeNodeBrand: any;
    }
    interface KeywordTypeNode extends TypeNode {
        kind: SyntaxKind.AnyKeyword | SyntaxKind.NumberKeyword | SyntaxKind.BooleanKeyword | SyntaxKind.StringKeyword | SyntaxKind.SymbolKeyword | SyntaxKind.VoidKeyword;
    }
    interface ThisTypeNode extends TypeNode {
        kind: SyntaxKind.ThisType;
    }
    interface FunctionOrConstructorTypeNode extends TypeNode, SignatureDeclaration {
        kind: SyntaxKind.FunctionType | SyntaxKind.ConstructorType;
    }
    interface FunctionTypeNode extends FunctionOrConstructorTypeNode {
        kind: SyntaxKind.FunctionType;
    }
    interface ConstructorTypeNode extends FunctionOrConstructorTypeNode {
        kind: SyntaxKind.ConstructorType;
    }
    interface TypeReferenceNode extends TypeNode {
        kind: SyntaxKind.TypeReference;
        typeName: EntityName;
        typeArguments?: NodeArray<TypeNode>;
    }
    interface TypePredicateNode extends TypeNode {
        kind: SyntaxKind.TypePredicate;
        parameterName: Identifier | ThisTypeNode;
        type: TypeNode;
    }
    interface TypeQueryNode extends TypeNode {
        kind: SyntaxKind.TypeQuery;
        exprName: EntityName;
    }
    interface TypeLiteralNode extends TypeNode, Declaration {
        kind: SyntaxKind.TypeLiteral;
        members: NodeArray<TypeElement>;
    }
    interface ArrayTypeNode extends TypeNode {
        kind: SyntaxKind.ArrayType;
        elementType: TypeNode;
    }
    interface TupleTypeNode extends TypeNode {
        kind: SyntaxKind.TupleType;
        elementTypes: NodeArray<TypeNode>;
    }
    interface UnionOrIntersectionTypeNode extends TypeNode {
        kind: SyntaxKind.UnionType | SyntaxKind.IntersectionType;
        types: NodeArray<TypeNode>;
    }
    interface UnionTypeNode extends UnionOrIntersectionTypeNode {
        kind: SyntaxKind.UnionType;
    }
    interface IntersectionTypeNode extends UnionOrIntersectionTypeNode {
        kind: SyntaxKind.IntersectionType;
    }
    interface ParenthesizedTypeNode extends TypeNode {
        kind: SyntaxKind.ParenthesizedType;
        type: TypeNode;
    }
    interface TypeOperatorNode extends TypeNode {
        kind: SyntaxKind.TypeOperator;
        operator: SyntaxKind.KeyOfKeyword;
        type: TypeNode;
    }
    interface IndexedAccessTypeNode extends TypeNode {
        kind: SyntaxKind.IndexedAccessType;
        objectType: TypeNode;
        indexType: TypeNode;
    }
    interface MappedTypeNode extends TypeNode, Declaration {
        kind: SyntaxKind.MappedType;
        readonlyToken?: ReadonlyToken;
        typeParameter: TypeParameterDeclaration;
        questionToken?: QuestionToken;
        type?: TypeNode;
    }
    interface LiteralTypeNode extends TypeNode {
        kind: SyntaxKind.LiteralType;
        literal: Expression;
    }
    interface StringLiteral extends LiteralExpression {
        kind: SyntaxKind.StringLiteral;
    }
    interface Expression extends Node {
        _expressionBrand: any;
        contextualType?: Type;
    }
    interface OmittedExpression extends Expression {
        kind: SyntaxKind.OmittedExpression;
    }
    interface UnaryExpression extends Expression {
        _unaryExpressionBrand: any;
    }
    interface IncrementExpression extends UnaryExpression {
        _incrementExpressionBrand: any;
    }
    type PrefixUnaryOperator = SyntaxKind.PlusPlusToken | SyntaxKind.MinusMinusToken | SyntaxKind.PlusToken | SyntaxKind.MinusToken | SyntaxKind.TildeToken | SyntaxKind.ExclamationToken;
    interface PrefixUnaryExpression extends IncrementExpression {
        kind: SyntaxKind.PrefixUnaryExpression;
        operator: PrefixUnaryOperator;
        operand: UnaryExpression;
    }
    type PostfixUnaryOperator = SyntaxKind.PlusPlusToken | SyntaxKind.MinusMinusToken;
    interface PostfixUnaryExpression extends IncrementExpression {
        kind: SyntaxKind.PostfixUnaryExpression;
        operand: LeftHandSideExpression;
        operator: PostfixUnaryOperator;
    }
    interface LeftHandSideExpression extends IncrementExpression {
        _leftHandSideExpressionBrand: any;
    }
    interface MemberExpression extends LeftHandSideExpression {
        _memberExpressionBrand: any;
    }
    interface PrimaryExpression extends MemberExpression {
        _primaryExpressionBrand: any;
    }
    interface NullLiteral extends PrimaryExpression {
        kind: SyntaxKind.NullKeyword;
    }
    interface BooleanLiteral extends PrimaryExpression {
        kind: SyntaxKind.TrueKeyword | SyntaxKind.FalseKeyword;
    }
    interface ThisExpression extends PrimaryExpression {
        kind: SyntaxKind.ThisKeyword;
    }
    interface SuperExpression extends PrimaryExpression {
        kind: SyntaxKind.SuperKeyword;
    }
    interface DeleteExpression extends UnaryExpression {
        kind: SyntaxKind.DeleteExpression;
        expression: UnaryExpression;
    }
    interface TypeOfExpression extends UnaryExpression {
        kind: SyntaxKind.TypeOfExpression;
        expression: UnaryExpression;
    }
    interface VoidExpression extends UnaryExpression {
        kind: SyntaxKind.VoidExpression;
        expression: UnaryExpression;
    }
    interface AwaitExpression extends UnaryExpression {
        kind: SyntaxKind.AwaitExpression;
        expression: UnaryExpression;
    }
    interface YieldExpression extends Expression {
        kind: SyntaxKind.YieldExpression;
        asteriskToken?: AsteriskToken;
        expression?: Expression;
    }
    type ExponentiationOperator = SyntaxKind.AsteriskAsteriskToken;
    type MultiplicativeOperator = SyntaxKind.AsteriskToken | SyntaxKind.SlashToken | SyntaxKind.PercentToken;
    type MultiplicativeOperatorOrHigher = ExponentiationOperator | MultiplicativeOperator;
    type AdditiveOperator = SyntaxKind.PlusToken | SyntaxKind.MinusToken;
    type AdditiveOperatorOrHigher = MultiplicativeOperatorOrHigher | AdditiveOperator;
    type ShiftOperator = SyntaxKind.LessThanLessThanToken | SyntaxKind.GreaterThanGreaterThanToken | SyntaxKind.GreaterThanGreaterThanGreaterThanToken;
    type ShiftOperatorOrHigher = AdditiveOperatorOrHigher | ShiftOperator;
    type RelationalOperator = SyntaxKind.LessThanToken | SyntaxKind.LessThanEqualsToken | SyntaxKind.GreaterThanToken | SyntaxKind.GreaterThanEqualsToken | SyntaxKind.InstanceOfKeyword | SyntaxKind.InKeyword;
    type RelationalOperatorOrHigher = ShiftOperatorOrHigher | RelationalOperator;
    type EqualityOperator = SyntaxKind.EqualsEqualsToken | SyntaxKind.EqualsEqualsEqualsToken | SyntaxKind.ExclamationEqualsEqualsToken | SyntaxKind.ExclamationEqualsToken;
    type EqualityOperatorOrHigher = RelationalOperatorOrHigher | EqualityOperator;
    type BitwiseOperator = SyntaxKind.AmpersandToken | SyntaxKind.BarToken | SyntaxKind.CaretToken;
    type BitwiseOperatorOrHigher = EqualityOperatorOrHigher | BitwiseOperator;
    type LogicalOperator = SyntaxKind.AmpersandAmpersandToken | SyntaxKind.BarBarToken;
    type LogicalOperatorOrHigher = BitwiseOperatorOrHigher | LogicalOperator;
    type CompoundAssignmentOperator = SyntaxKind.PlusEqualsToken | SyntaxKind.MinusEqualsToken | SyntaxKind.AsteriskAsteriskEqualsToken | SyntaxKind.AsteriskEqualsToken | SyntaxKind.SlashEqualsToken | SyntaxKind.PercentEqualsToken | SyntaxKind.AmpersandEqualsToken | SyntaxKind.BarEqualsToken | SyntaxKind.CaretEqualsToken | SyntaxKind.LessThanLessThanEqualsToken | SyntaxKind.GreaterThanGreaterThanGreaterThanEqualsToken | SyntaxKind.GreaterThanGreaterThanEqualsToken;
    type AssignmentOperator = SyntaxKind.EqualsToken | CompoundAssignmentOperator;
    type AssignmentOperatorOrHigher = LogicalOperatorOrHigher | AssignmentOperator;
    type BinaryOperator = AssignmentOperatorOrHigher | SyntaxKind.CommaToken;
    type BinaryOperatorToken = Token<BinaryOperator>;
    interface BinaryExpression extends Expression, Declaration {
        kind: SyntaxKind.BinaryExpression;
        left: Expression;
        operatorToken: BinaryOperatorToken;
        right: Expression;
    }
    type AssignmentOperatorToken = Token<AssignmentOperator>;
    interface AssignmentExpression<TOperator extends AssignmentOperatorToken> extends BinaryExpression {
        left: LeftHandSideExpression;
        operatorToken: TOperator;
    }
    interface ObjectDestructuringAssignment extends AssignmentExpression<EqualsToken> {
        left: ObjectLiteralExpression;
    }
    interface ArrayDestructuringAssignment extends AssignmentExpression<EqualsToken> {
        left: ArrayLiteralExpression;
    }
    type DestructuringAssignment = ObjectDestructuringAssignment | ArrayDestructuringAssignment;
    type BindingOrAssignmentElement = VariableDeclaration | ParameterDeclaration | BindingElement | PropertyAssignment | ShorthandPropertyAssignment | SpreadAssignment | OmittedExpression | SpreadElement | ArrayLiteralExpression | ObjectLiteralExpression | AssignmentExpression<EqualsToken> | Identifier | PropertyAccessExpression | ElementAccessExpression;
    type BindingOrAssignmentElementRestIndicator = DotDotDotToken | SpreadElement | SpreadAssignment;
    type BindingOrAssignmentElementTarget = BindingOrAssignmentPattern | Expression;
    type ObjectBindingOrAssignmentPattern = ObjectBindingPattern | ObjectLiteralExpression;
    type ArrayBindingOrAssignmentPattern = ArrayBindingPattern | ArrayLiteralExpression;
    type AssignmentPattern = ObjectLiteralExpression | ArrayLiteralExpression;
    type BindingOrAssignmentPattern = ObjectBindingOrAssignmentPattern | ArrayBindingOrAssignmentPattern;
    interface ConditionalExpression extends Expression {
        kind: SyntaxKind.ConditionalExpression;
        condition: Expression;
        questionToken: QuestionToken;
        whenTrue: Expression;
        colonToken: ColonToken;
        whenFalse: Expression;
    }
    type FunctionBody = Block;
    type ConciseBody = FunctionBody | Expression;
    interface FunctionExpression extends PrimaryExpression, FunctionLikeDeclaration {
        kind: SyntaxKind.FunctionExpression;
        name?: Identifier;
        body: FunctionBody;
    }
    interface ArrowFunction extends Expression, FunctionLikeDeclaration {
        kind: SyntaxKind.ArrowFunction;
        equalsGreaterThanToken: EqualsGreaterThanToken;
        body: ConciseBody;
    }
    interface LiteralLikeNode extends Node {
        text: string;
        isUnterminated?: boolean;
        hasExtendedUnicodeEscape?: boolean;
    }
    interface LiteralExpression extends LiteralLikeNode, PrimaryExpression {
        _literalExpressionBrand: any;
    }
    interface RegularExpressionLiteral extends LiteralExpression {
        kind: SyntaxKind.RegularExpressionLiteral;
    }
    interface NoSubstitutionTemplateLiteral extends LiteralExpression {
        kind: SyntaxKind.NoSubstitutionTemplateLiteral;
    }
    interface NumericLiteral extends LiteralExpression {
        kind: SyntaxKind.NumericLiteral;
        trailingComment?: string;
    }
    interface TemplateHead extends LiteralLikeNode {
        kind: SyntaxKind.TemplateHead;
    }
    interface TemplateMiddle extends LiteralLikeNode {
        kind: SyntaxKind.TemplateMiddle;
    }
    interface TemplateTail extends LiteralLikeNode {
        kind: SyntaxKind.TemplateTail;
    }
    type TemplateLiteral = TemplateExpression | NoSubstitutionTemplateLiteral;
    interface TemplateExpression extends PrimaryExpression {
        kind: SyntaxKind.TemplateExpression;
        head: TemplateHead;
        templateSpans: NodeArray<TemplateSpan>;
    }
    interface TemplateSpan extends Node {
        kind: SyntaxKind.TemplateSpan;
        expression: Expression;
        literal: TemplateMiddle | TemplateTail;
    }
    interface ParenthesizedExpression extends PrimaryExpression {
        kind: SyntaxKind.ParenthesizedExpression;
        expression: Expression;
    }
    interface ArrayLiteralExpression extends PrimaryExpression {
        kind: SyntaxKind.ArrayLiteralExpression;
        elements: NodeArray<Expression>;
    }
    interface SpreadElement extends Expression {
        kind: SyntaxKind.SpreadElement;
        expression: Expression;
    }
    /**
      * This interface is a base interface for ObjectLiteralExpression and JSXAttributes to extend from. JSXAttributes is similar to
      * ObjectLiteralExpression in that it contains array of properties; however, JSXAttributes' properties can only be
      * JSXAttribute or JSXSpreadAttribute. ObjectLiteralExpression, on the other hand, can only have properties of type
      * ObjectLiteralElement (e.g. PropertyAssignment, ShorthandPropertyAssignment etc.)
     **/
    interface ObjectLiteralExpressionBase<T extends ObjectLiteralElement> extends PrimaryExpression, Declaration {
        properties: NodeArray<T>;
    }
    interface ObjectLiteralExpression extends ObjectLiteralExpressionBase<ObjectLiteralElementLike> {
        kind: SyntaxKind.ObjectLiteralExpression;
    }
    type EntityNameExpression = Identifier | PropertyAccessEntityNameExpression;
    type EntityNameOrEntityNameExpression = EntityName | EntityNameExpression;
    interface PropertyAccessExpression extends MemberExpression, Declaration {
        kind: SyntaxKind.PropertyAccessExpression;
        expression: LeftHandSideExpression;
        name: Identifier;
    }
    interface SuperPropertyAccessExpression extends PropertyAccessExpression {
        expression: SuperExpression;
    }
    /** Brand for a PropertyAccessExpression which, like a QualifiedName, consists of a sequence of identifiers separated by dots. */
    interface PropertyAccessEntityNameExpression extends PropertyAccessExpression {
        _propertyAccessExpressionLikeQualifiedNameBrand?: any;
        expression: EntityNameExpression;
    }
    interface ElementAccessExpression extends MemberExpression {
        kind: SyntaxKind.ElementAccessExpression;
        expression: LeftHandSideExpression;
        argumentExpression?: Expression;
    }
    interface SuperElementAccessExpression extends ElementAccessExpression {
        expression: SuperExpression;
    }
    type SuperProperty = SuperPropertyAccessExpression | SuperElementAccessExpression;
    interface CallExpression extends LeftHandSideExpression, Declaration {
        kind: SyntaxKind.CallExpression;
        expression: LeftHandSideExpression;
        typeArguments?: NodeArray<TypeNode>;
        arguments: NodeArray<Expression>;
    }
    interface SuperCall extends CallExpression {
        expression: SuperExpression;
    }
    interface ExpressionWithTypeArguments extends TypeNode {
        kind: SyntaxKind.ExpressionWithTypeArguments;
        expression: LeftHandSideExpression;
        typeArguments?: NodeArray<TypeNode>;
    }
    interface NewExpression extends PrimaryExpression, Declaration {
        kind: SyntaxKind.NewExpression;
        expression: LeftHandSideExpression;
        typeArguments?: NodeArray<TypeNode>;
        arguments: NodeArray<Expression>;
    }
    interface TaggedTemplateExpression extends MemberExpression {
        kind: SyntaxKind.TaggedTemplateExpression;
        tag: LeftHandSideExpression;
        template: TemplateLiteral;
    }
    type CallLikeExpression = CallExpression | NewExpression | TaggedTemplateExpression | Decorator;
    interface AsExpression extends Expression {
        kind: SyntaxKind.AsExpression;
        expression: Expression;
        type: TypeNode;
    }
    interface TypeAssertion extends UnaryExpression {
        kind: SyntaxKind.TypeAssertionExpression;
        type: TypeNode;
        expression: UnaryExpression;
    }
    type AssertionExpression = TypeAssertion | AsExpression;
    interface NonNullExpression extends LeftHandSideExpression {
        kind: SyntaxKind.NonNullExpression;
        expression: Expression;
    }
    interface JsxElement extends PrimaryExpression {
        kind: SyntaxKind.JsxElement;
        openingElement: JsxOpeningElement;
        children: NodeArray<JsxChild>;
        closingElement: JsxClosingElement;
    }
    type JsxTagNameExpression = PrimaryExpression | PropertyAccessExpression;
    interface JsxOpeningElement extends Expression {
        kind: SyntaxKind.JsxOpeningElement;
        tagName: JsxTagNameExpression;
        attributes: NodeArray<JsxAttribute | JsxSpreadAttribute>;
    }
    interface JsxSelfClosingElement extends PrimaryExpression {
        kind: SyntaxKind.JsxSelfClosingElement;
        tagName: JsxTagNameExpression;
        attributes: NodeArray<JsxAttribute | JsxSpreadAttribute>;
    }
    type JsxOpeningLikeElement = JsxSelfClosingElement | JsxOpeningElement;
    type JsxAttributeLike = JsxAttribute | JsxSpreadAttribute;
    interface JsxAttribute extends Node {
        kind: SyntaxKind.JsxAttribute;
        name: Identifier;
        initializer?: StringLiteral | JsxExpression;
    }
    interface JsxSpreadAttribute extends Node {
        kind: SyntaxKind.JsxSpreadAttribute;
        expression: Expression;
    }
    interface JsxClosingElement extends Node {
        kind: SyntaxKind.JsxClosingElement;
        tagName: JsxTagNameExpression;
    }
    interface JsxExpression extends Expression {
        kind: SyntaxKind.JsxExpression;
        expression?: Expression;
    }
    interface JsxText extends Node {
        kind: SyntaxKind.JsxText;
    }
    type JsxChild = JsxText | JsxExpression | JsxElement | JsxSelfClosingElement;
    interface Statement extends Node {
        _statementBrand: any;
    }
    interface EmptyStatement extends Statement {
        kind: SyntaxKind.EmptyStatement;
    }
    interface DebuggerStatement extends Statement {
        kind: SyntaxKind.DebuggerStatement;
    }
    interface MissingDeclaration extends DeclarationStatement, ClassElement, ObjectLiteralElement, TypeElement {
        kind: SyntaxKind.MissingDeclaration;
        name?: Identifier;
    }
    type BlockLike = SourceFile | Block | ModuleBlock | CaseClause;
    interface Block extends Statement {
        kind: SyntaxKind.Block;
        statements: NodeArray<Statement>;
    }
    interface VariableStatement extends Statement {
        kind: SyntaxKind.VariableStatement;
        declarationList: VariableDeclarationList;
    }
    interface ExpressionStatement extends Statement {
        kind: SyntaxKind.ExpressionStatement;
        expression: Expression;
    }
    interface IfStatement extends Statement {
        kind: SyntaxKind.IfStatement;
        expression: Expression;
        thenStatement: Statement;
        elseStatement?: Statement;
    }
    interface IterationStatement extends Statement {
        statement: Statement;
    }
    interface DoStatement extends IterationStatement {
        kind: SyntaxKind.DoStatement;
        expression: Expression;
    }
    interface WhileStatement extends IterationStatement {
        kind: SyntaxKind.WhileStatement;
        expression: Expression;
    }
    type ForInitializer = VariableDeclarationList | Expression;
    interface ForStatement extends IterationStatement {
        kind: SyntaxKind.ForStatement;
        initializer?: ForInitializer;
        condition?: Expression;
        incrementor?: Expression;
    }
    interface ForInStatement extends IterationStatement {
        kind: SyntaxKind.ForInStatement;
        initializer: ForInitializer;
        expression: Expression;
    }
    interface ForOfStatement extends IterationStatement {
        kind: SyntaxKind.ForOfStatement;
        initializer: ForInitializer;
        expression: Expression;
    }
    interface BreakStatement extends Statement {
        kind: SyntaxKind.BreakStatement;
        label?: Identifier;
    }
    interface ContinueStatement extends Statement {
        kind: SyntaxKind.ContinueStatement;
        label?: Identifier;
    }
    type BreakOrContinueStatement = BreakStatement | ContinueStatement;
    interface ReturnStatement extends Statement {
        kind: SyntaxKind.ReturnStatement;
        expression?: Expression;
    }
    interface WithStatement extends Statement {
        kind: SyntaxKind.WithStatement;
        expression: Expression;
        statement: Statement;
    }
    interface SwitchStatement extends Statement {
        kind: SyntaxKind.SwitchStatement;
        expression: Expression;
        caseBlock: CaseBlock;
        possiblyExhaustive?: boolean;
    }
    interface CaseBlock extends Node {
        kind: SyntaxKind.CaseBlock;
        clauses: NodeArray<CaseOrDefaultClause>;
    }
    interface CaseClause extends Node {
        kind: SyntaxKind.CaseClause;
        expression: Expression;
        statements: NodeArray<Statement>;
    }
    interface DefaultClause extends Node {
        kind: SyntaxKind.DefaultClause;
        statements: NodeArray<Statement>;
    }
    type CaseOrDefaultClause = CaseClause | DefaultClause;
    interface LabeledStatement extends Statement {
        kind: SyntaxKind.LabeledStatement;
        label: Identifier;
        statement: Statement;
    }
    interface ThrowStatement extends Statement {
        kind: SyntaxKind.ThrowStatement;
        expression: Expression;
    }
    interface TryStatement extends Statement {
        kind: SyntaxKind.TryStatement;
        tryBlock: Block;
        catchClause?: CatchClause;
        finallyBlock?: Block;
    }
    interface CatchClause extends Node {
        kind: SyntaxKind.CatchClause;
        variableDeclaration: VariableDeclaration;
        block: Block;
    }
    type DeclarationWithTypeParameters = SignatureDeclaration | ClassLikeDeclaration | InterfaceDeclaration | TypeAliasDeclaration;
    interface ClassLikeDeclaration extends Declaration {
        name?: Identifier;
        typeParameters?: NodeArray<TypeParameterDeclaration>;
        heritageClauses?: NodeArray<HeritageClause>;
        members: NodeArray<ClassElement>;
    }
    interface ClassDeclaration extends ClassLikeDeclaration, DeclarationStatement {
        kind: SyntaxKind.ClassDeclaration;
        name?: Identifier;
    }
    interface ClassExpression extends ClassLikeDeclaration, PrimaryExpression {
        kind: SyntaxKind.ClassExpression;
    }
    interface ClassElement extends Declaration {
        _classElementBrand: any;
        name?: PropertyName;
    }
    interface TypeElement extends Declaration {
        _typeElementBrand: any;
        name?: PropertyName;
        questionToken?: QuestionToken;
    }
    interface InterfaceDeclaration extends DeclarationStatement {
        kind: SyntaxKind.InterfaceDeclaration;
        name: Identifier;
        typeParameters?: NodeArray<TypeParameterDeclaration>;
        heritageClauses?: NodeArray<HeritageClause>;
        members: NodeArray<TypeElement>;
    }
    interface HeritageClause extends Node {
        kind: SyntaxKind.HeritageClause;
        token: SyntaxKind;
        types?: NodeArray<ExpressionWithTypeArguments>;
    }
    interface TypeAliasDeclaration extends DeclarationStatement {
        kind: SyntaxKind.TypeAliasDeclaration;
        name: Identifier;
        typeParameters?: NodeArray<TypeParameterDeclaration>;
        type: TypeNode;
    }
    interface EnumMember extends Declaration {
        kind: SyntaxKind.EnumMember;
        name: PropertyName;
        initializer?: Expression;
    }
    interface EnumDeclaration extends DeclarationStatement {
        kind: SyntaxKind.EnumDeclaration;
        name: Identifier;
        members: NodeArray<EnumMember>;
    }
    type ModuleBody = ModuleBlock | ModuleDeclaration;
    type ModuleName = Identifier | StringLiteral;
    interface ModuleDeclaration extends DeclarationStatement {
        kind: SyntaxKind.ModuleDeclaration;
        name: Identifier | StringLiteral;
        body?: ModuleBlock | NamespaceDeclaration | JSDocNamespaceDeclaration | Identifier;
    }
    interface NamespaceDeclaration extends ModuleDeclaration {
        name: Identifier;
        body: ModuleBlock | NamespaceDeclaration;
    }
    interface JSDocNamespaceDeclaration extends ModuleDeclaration {
        name: Identifier;
        body: JSDocNamespaceDeclaration | Identifier;
    }
    interface ModuleBlock extends Node, Statement {
        kind: SyntaxKind.ModuleBlock;
        statements: NodeArray<Statement>;
    }
    type ModuleReference = EntityName | ExternalModuleReference;
    interface ImportEqualsDeclaration extends DeclarationStatement {
        kind: SyntaxKind.ImportEqualsDeclaration;
        name: Identifier;
        moduleReference: ModuleReference;
    }
    interface ExternalModuleReference extends Node {
        kind: SyntaxKind.ExternalModuleReference;
        expression?: Expression;
    }
    interface ImportDeclaration extends Statement {
        kind: SyntaxKind.ImportDeclaration;
        importClause?: ImportClause;
        moduleSpecifier: Expression;
    }
    type NamedImportBindings = NamespaceImport | NamedImports;
    interface ImportClause extends Declaration {
        kind: SyntaxKind.ImportClause;
        name?: Identifier;
        namedBindings?: NamedImportBindings;
    }
    interface NamespaceImport extends Declaration {
        kind: SyntaxKind.NamespaceImport;
        name: Identifier;
    }
    interface NamespaceExportDeclaration extends DeclarationStatement {
        kind: SyntaxKind.NamespaceExportDeclaration;
        name: Identifier;
        moduleReference: LiteralLikeNode;
    }
    interface ExportDeclaration extends DeclarationStatement {
        kind: SyntaxKind.ExportDeclaration;
        exportClause?: NamedExports;
        moduleSpecifier?: Expression;
    }
    interface NamedImports extends Node {
        kind: SyntaxKind.NamedImports;
        elements: NodeArray<ImportSpecifier>;
    }
    interface NamedExports extends Node {
        kind: SyntaxKind.NamedExports;
        elements: NodeArray<ExportSpecifier>;
    }
    type NamedImportsOrExports = NamedImports | NamedExports;
    interface ImportSpecifier extends Declaration {
        kind: SyntaxKind.ImportSpecifier;
        propertyName?: Identifier;
        name: Identifier;
    }
    interface ExportSpecifier extends Declaration {
        kind: SyntaxKind.ExportSpecifier;
        propertyName?: Identifier;
        name: Identifier;
    }
    type ImportOrExportSpecifier = ImportSpecifier | ExportSpecifier;
    interface ExportAssignment extends DeclarationStatement {
        kind: SyntaxKind.ExportAssignment;
        isExportEquals?: boolean;
        expression: Expression;
    }
    interface FileReference extends TextRange {
        fileName: string;
    }
    interface CommentRange extends TextRange {
        hasTrailingNewLine?: boolean;
        kind: SyntaxKind;
    }
    interface JSDocTypeExpression extends Node {
        kind: SyntaxKind.JSDocTypeExpression;
        type: JSDocType;
    }
    interface JSDocType extends TypeNode {
        _jsDocTypeBrand: any;
    }
    interface JSDocAllType extends JSDocType {
        kind: SyntaxKind.JSDocAllType;
    }
    interface JSDocUnknownType extends JSDocType {
        kind: SyntaxKind.JSDocUnknownType;
    }
    interface JSDocArrayType extends JSDocType {
        kind: SyntaxKind.JSDocArrayType;
        elementType: JSDocType;
    }
    interface JSDocUnionType extends JSDocType {
        kind: SyntaxKind.JSDocUnionType;
        types: NodeArray<JSDocType>;
    }
    interface JSDocTupleType extends JSDocType {
        kind: SyntaxKind.JSDocTupleType;
        types: NodeArray<JSDocType>;
    }
    interface JSDocNonNullableType extends JSDocType {
        kind: SyntaxKind.JSDocNonNullableType;
        type: JSDocType;
    }
    interface JSDocNullableType extends JSDocType {
        kind: SyntaxKind.JSDocNullableType;
        type: JSDocType;
    }
    interface JSDocRecordType extends JSDocType {
        kind: SyntaxKind.JSDocRecordType;
        literal: TypeLiteralNode;
    }
    interface JSDocTypeReference extends JSDocType {
        kind: SyntaxKind.JSDocTypeReference;
        name: EntityName;
        typeArguments: NodeArray<JSDocType>;
    }
    interface JSDocOptionalType extends JSDocType {
        kind: SyntaxKind.JSDocOptionalType;
        type: JSDocType;
    }
    interface JSDocFunctionType extends JSDocType, SignatureDeclaration {
        kind: SyntaxKind.JSDocFunctionType;
        parameters: NodeArray<ParameterDeclaration>;
        type: JSDocType;
    }
    interface JSDocVariadicType extends JSDocType {
        kind: SyntaxKind.JSDocVariadicType;
        type: JSDocType;
    }
    interface JSDocConstructorType extends JSDocType {
        kind: SyntaxKind.JSDocConstructorType;
        type: JSDocType;
    }
    interface JSDocThisType extends JSDocType {
        kind: SyntaxKind.JSDocThisType;
        type: JSDocType;
    }
    interface JSDocLiteralType extends JSDocType {
        kind: SyntaxKind.JSDocLiteralType;
        literal: LiteralTypeNode;
    }
    type JSDocTypeReferencingNode = JSDocThisType | JSDocConstructorType | JSDocVariadicType | JSDocOptionalType | JSDocNullableType | JSDocNonNullableType;
    interface JSDocRecordMember extends PropertySignature {
        kind: SyntaxKind.JSDocRecordMember;
        name: Identifier | StringLiteral | NumericLiteral;
        type?: JSDocType;
    }
    interface JSDoc extends Node {
        kind: SyntaxKind.JSDocComment;
        tags: NodeArray<JSDocTag> | undefined;
        comment: string | undefined;
    }
    interface JSDocTag extends Node {
        atToken: AtToken;
        tagName: Identifier;
        comment: string | undefined;
    }
    interface JSDocUnknownTag extends JSDocTag {
        kind: SyntaxKind.JSDocTag;
    }
    interface JSDocAugmentsTag extends JSDocTag {
        kind: SyntaxKind.JSDocAugmentsTag;
        typeExpression: JSDocTypeExpression;
    }
    interface JSDocTemplateTag extends JSDocTag {
        kind: SyntaxKind.JSDocTemplateTag;
        typeParameters: NodeArray<TypeParameterDeclaration>;
    }
    interface JSDocReturnTag extends JSDocTag {
        kind: SyntaxKind.JSDocReturnTag;
        typeExpression: JSDocTypeExpression;
    }
    interface JSDocTypeTag extends JSDocTag {
        kind: SyntaxKind.JSDocTypeTag;
        typeExpression: JSDocTypeExpression;
    }
    interface JSDocTypedefTag extends JSDocTag, Declaration {
        kind: SyntaxKind.JSDocTypedefTag;
        fullName?: JSDocNamespaceDeclaration | Identifier;
        name?: Identifier;
        typeExpression?: JSDocTypeExpression;
        jsDocTypeLiteral?: JSDocTypeLiteral;
    }
    interface JSDocPropertyTag extends JSDocTag, TypeElement {
        kind: SyntaxKind.JSDocPropertyTag;
        name: Identifier;
        typeExpression: JSDocTypeExpression;
    }
    interface JSDocTypeLiteral extends JSDocType {
        kind: SyntaxKind.JSDocTypeLiteral;
        jsDocPropertyTags?: NodeArray<JSDocPropertyTag>;
        jsDocTypeTag?: JSDocTypeTag;
    }
    interface JSDocParameterTag extends JSDocTag {
        kind: SyntaxKind.JSDocParameterTag;
        /** the parameter name, if provided *before* the type (TypeScript-style) */
        preParameterName?: Identifier;
        typeExpression?: JSDocTypeExpression;
        /** the parameter name, if provided *after* the type (JSDoc-standard) */
        postParameterName?: Identifier;
        /** the parameter name, regardless of the location it was provided */
        parameterName: Identifier;
        isBracketed: boolean;
    }
    enum FlowFlags {
        Unreachable = 1,
        Start = 2,
        BranchLabel = 4,
        LoopLabel = 8,
        Assignment = 16,
        TrueCondition = 32,
        FalseCondition = 64,
        SwitchClause = 128,
        ArrayMutation = 256,
        Referenced = 512,
        Shared = 1024,
        Label = 12,
        Condition = 96,
    }
    interface FlowNode {
        flags: FlowFlags;
        id?: number;
    }
    interface FlowStart extends FlowNode {
        container?: FunctionExpression | ArrowFunction | MethodDeclaration;
    }
    interface FlowLabel extends FlowNode {
        antecedents: FlowNode[];
    }
    interface FlowAssignment extends FlowNode {
        node: Expression | VariableDeclaration | BindingElement;
        antecedent: FlowNode;
    }
    interface FlowCondition extends FlowNode {
        expression: Expression;
        antecedent: FlowNode;
    }
    interface FlowSwitchClause extends FlowNode {
        switchStatement: SwitchStatement;
        clauseStart: number;
        clauseEnd: number;
        antecedent: FlowNode;
    }
    interface FlowArrayMutation extends FlowNode {
        node: CallExpression | BinaryExpression;
        antecedent: FlowNode;
    }
    type FlowType = Type | IncompleteType;
    interface IncompleteType {
        flags: TypeFlags;
        type: Type;
    }
    interface AmdDependency {
        path: string;
        name: string;
    }
    interface SourceFile extends Declaration {
        kind: SyntaxKind.SourceFile;
        statements: NodeArray<Statement>;
        endOfFileToken: Token<SyntaxKind.EndOfFileToken>;
        fileName: string;
        path: Path;
        text: string;
        amdDependencies: AmdDependency[];
        moduleName: string;
        referencedFiles: FileReference[];
        typeReferenceDirectives: FileReference[];
        languageVariant: LanguageVariant;
        isDeclarationFile: boolean;
        /**
         * lib.d.ts should have a reference comment like
         *
         *  /// <reference no-default-lib="true"/>
         *
         * If any other file has this comment, it signals not to include lib.d.ts
         * because this containing file is intended to act as a default library.
         */
        hasNoDefaultLib: boolean;
        languageVersion: ScriptTarget;
    }
    interface ScriptReferenceHost {
        getCompilerOptions(): CompilerOptions;
        getSourceFile(fileName: string): SourceFile;
        getSourceFileByPath(path: Path): SourceFile;
        getCurrentDirectory(): string;
    }
    interface ParseConfigHost {
        useCaseSensitiveFileNames: boolean;
        readDirectory(rootDir: string, extensions: string[], excludes: string[], includes: string[]): string[];
        /**
          * Gets a value indicating whether the specified path exists and is a file.
          * @param path The path to test.
          */
        fileExists(path: string): boolean;
        readFile(path: string): string;
    }
    interface WriteFileCallback {
        (fileName: string, data: string, writeByteOrderMark: boolean, onError?: (message: string) => void, sourceFiles?: SourceFile[]): void;
    }
    class OperationCanceledException {
    }
    interface CancellationToken {
        isCancellationRequested(): boolean;
        /** @throws OperationCanceledException if isCancellationRequested is true */
        throwIfCancellationRequested(): void;
    }
    interface Program extends ScriptReferenceHost {
        /**
         * Get a list of root file names that were passed to a 'createProgram'
         */
        getRootFileNames(): string[];
        /**
         * Get a list of files in the program
         */
        getSourceFiles(): SourceFile[];
        /**
         * Emits the JavaScript and declaration files.  If targetSourceFile is not specified, then
         * the JavaScript and declaration files will be produced for all the files in this program.
         * If targetSourceFile is specified, then only the JavaScript and declaration for that
         * specific file will be generated.
         *
         * If writeFile is not specified then the writeFile callback from the compiler host will be
         * used for writing the JavaScript and declaration files.  Otherwise, the writeFile parameter
         * will be invoked when writing the JavaScript and declaration files.
         */
        emit(targetSourceFile?: SourceFile, writeFile?: WriteFileCallback, cancellationToken?: CancellationToken, emitOnlyDtsFiles?: boolean): EmitResult;
        getOptionsDiagnostics(cancellationToken?: CancellationToken): Diagnostic[];
        getGlobalDiagnostics(cancellationToken?: CancellationToken): Diagnostic[];
        getSyntacticDiagnostics(sourceFile?: SourceFile, cancellationToken?: CancellationToken): Diagnostic[];
        getSemanticDiagnostics(sourceFile?: SourceFile, cancellationToken?: CancellationToken): Diagnostic[];
        getDeclarationDiagnostics(sourceFile?: SourceFile, cancellationToken?: CancellationToken): Diagnostic[];
        /**
         * Gets a type checker that can be used to semantically analyze source fils in the program.
         */
        getTypeChecker(): TypeChecker;
    }
    interface SourceMapSpan {
        /** Line number in the .js file. */
        emittedLine: number;
        /** Column number in the .js file. */
        emittedColumn: number;
        /** Line number in the .ts file. */
        sourceLine: number;
        /** Column number in the .ts file. */
        sourceColumn: number;
        /** Optional name (index into names array) associated with this span. */
        nameIndex?: number;
        /** .ts file (index into sources array) associated with this span */
        sourceIndex: number;
    }
    interface SourceMapData {
        sourceMapFilePath: string;
        jsSourceMappingURL: string;
        sourceMapFile: string;
        sourceMapSourceRoot: string;
        sourceMapSources: string[];
        sourceMapSourcesContent?: string[];
        inputSourceFileNames: string[];
        sourceMapNames?: string[];
        sourceMapMappings: string;
        sourceMapDecodedMappings: SourceMapSpan[];
    }
    /** Return code used by getEmitOutput function to indicate status of the function */
    enum ExitStatus {
        Success = 0,
        DiagnosticsPresent_OutputsSkipped = 1,
        DiagnosticsPresent_OutputsGenerated = 2,
    }
    interface EmitResult {
        emitSkipped: boolean;
        /** Contains declaration emit diagnostics */
        diagnostics: Diagnostic[];
        emittedFiles: string[];
    }
    interface TypeChecker {
        getTypeOfSymbolAtLocation(symbol: Symbol, node: Node): Type;
        getDeclaredTypeOfSymbol(symbol: Symbol): Type;
        getPropertiesOfType(type: Type): Symbol[];
        getPropertyOfType(type: Type, propertyName: string): Symbol;
        getSignaturesOfType(type: Type, kind: SignatureKind): Signature[];
        getIndexTypeOfType(type: Type, kind: IndexKind): Type;
        getBaseTypes(type: InterfaceType): ObjectType[];
        getReturnTypeOfSignature(signature: Signature): Type;
        getNonNullableType(type: Type): Type;
        getSymbolsInScope(location: Node, meaning: SymbolFlags): Symbol[];
        getSymbolAtLocation(node: Node): Symbol;
        getSymbolsOfParameterPropertyDeclaration(parameter: ParameterDeclaration, parameterName: string): Symbol[];
        getShorthandAssignmentValueSymbol(location: Node): Symbol;
        getExportSpecifierLocalTargetSymbol(location: ExportSpecifier): Symbol;
        getPropertySymbolOfDestructuringAssignment(location: Identifier): Symbol;
        getTypeAtLocation(node: Node): Type;
        typeToString(type: Type, enclosingDeclaration?: Node, flags?: TypeFormatFlags): string;
        symbolToString(symbol: Symbol, enclosingDeclaration?: Node, meaning?: SymbolFlags): string;
        getSymbolDisplayBuilder(): SymbolDisplayBuilder;
        getFullyQualifiedName(symbol: Symbol): string;
        getAugmentedPropertiesOfType(type: Type): Symbol[];
        getRootSymbols(symbol: Symbol): Symbol[];
        getContextualType(node: Expression): Type;
        getResolvedSignature(node: CallLikeExpression, candidatesOutArray?: Signature[]): Signature;
        getSignatureFromDeclaration(declaration: SignatureDeclaration): Signature;
        isImplementationOfOverload(node: FunctionLikeDeclaration): boolean;
        isUndefinedSymbol(symbol: Symbol): boolean;
        isArgumentsSymbol(symbol: Symbol): boolean;
        isUnknownSymbol(symbol: Symbol): boolean;
        getConstantValue(node: EnumMember | PropertyAccessExpression | ElementAccessExpression): number;
        isValidPropertyAccess(node: PropertyAccessExpression | QualifiedName, propertyName: string): boolean;
        getAliasedSymbol(symbol: Symbol): Symbol;
        getExportsOfModule(moduleSymbol: Symbol): Symbol[];
        getJsxElementAttributesType(elementNode: JsxOpeningLikeElement): Type;
        getJsxIntrinsicTagNames(): Symbol[];
        isOptionalParameter(node: ParameterDeclaration): boolean;
        getAmbientModules(): Symbol[];
        tryGetMemberInModuleExports(memberName: string, moduleSymbol: Symbol): Symbol | undefined;
    }
    interface SymbolDisplayBuilder {
        buildTypeDisplay(type: Type, writer: SymbolWriter, enclosingDeclaration?: Node, flags?: TypeFormatFlags): void;
        buildSymbolDisplay(symbol: Symbol, writer: SymbolWriter, enclosingDeclaration?: Node, meaning?: SymbolFlags, flags?: SymbolFormatFlags): void;
        buildSignatureDisplay(signatures: Signature, writer: SymbolWriter, enclosingDeclaration?: Node, flags?: TypeFormatFlags, kind?: SignatureKind): void;
        buildParameterDisplay(parameter: Symbol, writer: SymbolWriter, enclosingDeclaration?: Node, flags?: TypeFormatFlags): void;
        buildTypeParameterDisplay(tp: TypeParameter, writer: SymbolWriter, enclosingDeclaration?: Node, flags?: TypeFormatFlags): void;
        buildTypePredicateDisplay(predicate: TypePredicate, writer: SymbolWriter, enclosingDeclaration?: Node, flags?: TypeFormatFlags): void;
        buildTypeParameterDisplayFromSymbol(symbol: Symbol, writer: SymbolWriter, enclosingDeclaration?: Node, flags?: TypeFormatFlags): void;
        buildDisplayForParametersAndDelimiters(thisParameter: Symbol, parameters: Symbol[], writer: SymbolWriter, enclosingDeclaration?: Node, flags?: TypeFormatFlags): void;
        buildDisplayForTypeParametersAndDelimiters(typeParameters: TypeParameter[], writer: SymbolWriter, enclosingDeclaration?: Node, flags?: TypeFormatFlags): void;
        buildReturnTypeDisplay(signature: Signature, writer: SymbolWriter, enclosingDeclaration?: Node, flags?: TypeFormatFlags): void;
    }
    interface SymbolWriter {
        writeKeyword(text: string): void;
        writeOperator(text: string): void;
        writePunctuation(text: string): void;
        writeSpace(text: string): void;
        writeStringLiteral(text: string): void;
        writeParameter(text: string): void;
        writeSymbol(text: string, symbol: Symbol): void;
        writeLine(): void;
        increaseIndent(): void;
        decreaseIndent(): void;
        clear(): void;
        trackSymbol(symbol: Symbol, enclosingDeclaration?: Node, meaning?: SymbolFlags): void;
        reportInaccessibleThisError(): void;
    }
    enum TypeFormatFlags {
        None = 0,
        WriteArrayAsGenericType = 1,
        UseTypeOfFunction = 2,
        NoTruncation = 4,
        WriteArrowStyleSignature = 8,
        WriteOwnNameForAnyLike = 16,
        WriteTypeArgumentsOfSignature = 32,
        InElementType = 64,
        UseFullyQualifiedType = 128,
        InFirstTypeArgument = 256,
        InTypeAlias = 512,
        UseTypeAliasValue = 1024,
    }
    enum SymbolFormatFlags {
        None = 0,
        WriteTypeParametersOrArguments = 1,
        UseOnlyExternalAliasing = 2,
    }
    enum TypePredicateKind {
        This = 0,
        Identifier = 1,
    }
    interface TypePredicateBase {
        kind: TypePredicateKind;
        type: Type;
    }
    interface ThisTypePredicate extends TypePredicateBase {
        kind: TypePredicateKind.This;
    }
    interface IdentifierTypePredicate extends TypePredicateBase {
        kind: TypePredicateKind.Identifier;
        parameterName: string;
        parameterIndex: number;
    }
    type TypePredicate = IdentifierTypePredicate | ThisTypePredicate;
    enum SymbolFlags {
        None = 0,
        FunctionScopedVariable = 1,
        BlockScopedVariable = 2,
        Property = 4,
        EnumMember = 8,
        Function = 16,
        Class = 32,
        Interface = 64,
        ConstEnum = 128,
        RegularEnum = 256,
        ValueModule = 512,
        NamespaceModule = 1024,
        TypeLiteral = 2048,
        ObjectLiteral = 4096,
        Method = 8192,
        Constructor = 16384,
        GetAccessor = 32768,
        SetAccessor = 65536,
        Signature = 131072,
        TypeParameter = 262144,
        TypeAlias = 524288,
        ExportValue = 1048576,
        ExportType = 2097152,
        ExportNamespace = 4194304,
        Alias = 8388608,
        Instantiated = 16777216,
        Merged = 33554432,
        Transient = 67108864,
        Prototype = 134217728,
        SyntheticProperty = 268435456,
        Optional = 536870912,
        ExportStar = 1073741824,
        Enum = 384,
        Variable = 3,
        Value = 107455,
        Type = 793064,
        Namespace = 1920,
        Module = 1536,
        Accessor = 98304,
        FunctionScopedVariableExcludes = 107454,
        BlockScopedVariableExcludes = 107455,
        ParameterExcludes = 107455,
        PropertyExcludes = 0,
        EnumMemberExcludes = 900095,
        FunctionExcludes = 106927,
        ClassExcludes = 899519,
        InterfaceExcludes = 792968,
        RegularEnumExcludes = 899327,
        ConstEnumExcludes = 899967,
        ValueModuleExcludes = 106639,
        NamespaceModuleExcludes = 0,
        MethodExcludes = 99263,
        GetAccessorExcludes = 41919,
        SetAccessorExcludes = 74687,
        TypeParameterExcludes = 530920,
        TypeAliasExcludes = 793064,
        AliasExcludes = 8388608,
        ModuleMember = 8914931,
        ExportHasLocal = 944,
        HasExports = 1952,
        HasMembers = 6240,
        BlockScoped = 418,
        PropertyOrAccessor = 98308,
        Export = 7340032,
        ClassMember = 106500,
    }
    interface Symbol {
        flags: SymbolFlags;
        name: string;
        declarations?: Declaration[];
        valueDeclaration?: Declaration;
        members?: SymbolTable;
        exports?: SymbolTable;
        globalExports?: SymbolTable;
    }
    type SymbolTable = Map<Symbol>;
    enum TypeFlags {
        Any = 1,
        String = 2,
        Number = 4,
        Boolean = 8,
        Enum = 16,
        StringLiteral = 32,
        NumberLiteral = 64,
        BooleanLiteral = 128,
        EnumLiteral = 256,
        ESSymbol = 512,
        Void = 1024,
        Undefined = 2048,
        Null = 4096,
        Never = 8192,
        TypeParameter = 16384,
        Object = 32768,
        Union = 65536,
        Intersection = 131072,
        Index = 262144,
        IndexedAccess = 524288,
        Literal = 480,
        StringOrNumberLiteral = 96,
        PossiblyFalsy = 7406,
        StringLike = 262178,
        NumberLike = 340,
        BooleanLike = 136,
        EnumLike = 272,
        UnionOrIntersection = 196608,
        StructuredType = 229376,
        StructuredOrTypeParameter = 507904,
        TypeVariable = 540672,
        Narrowable = 1033215,
        NotUnionOrUnit = 33281,
    }
    type DestructuringPattern = BindingPattern | ObjectLiteralExpression | ArrayLiteralExpression;
    interface Type {
        flags: TypeFlags;
        symbol?: Symbol;
        pattern?: DestructuringPattern;
        aliasSymbol?: Symbol;
        aliasTypeArguments?: Type[];
    }
    interface LiteralType extends Type {
        text: string;
        freshType?: LiteralType;
        regularType?: LiteralType;
    }
    interface EnumType extends Type {
        memberTypes: Map<EnumLiteralType>;
    }
    interface EnumLiteralType extends LiteralType {
        baseType: EnumType & UnionType;
    }
    enum ObjectFlags {
        Class = 1,
        Interface = 2,
        Reference = 4,
        Tuple = 8,
        Anonymous = 16,
        Mapped = 32,
        Instantiated = 64,
        ObjectLiteral = 128,
        EvolvingArray = 256,
        ObjectLiteralPatternWithComputedProperties = 512,
        ClassOrInterface = 3,
    }
    interface ObjectType extends Type {
        objectFlags: ObjectFlags;
    }
    interface InterfaceType extends ObjectType {
        typeParameters: TypeParameter[];
        outerTypeParameters: TypeParameter[];
        localTypeParameters: TypeParameter[];
        thisType: TypeParameter;
    }
    interface InterfaceTypeWithDeclaredMembers extends InterfaceType {
        declaredProperties: Symbol[];
        declaredCallSignatures: Signature[];
        declaredConstructSignatures: Signature[];
        declaredStringIndexInfo: IndexInfo;
        declaredNumberIndexInfo: IndexInfo;
    }
    interface TypeReference extends ObjectType {
        target: GenericType;
        typeArguments: Type[];
    }
    interface GenericType extends InterfaceType, TypeReference {
    }
    interface UnionOrIntersectionType extends Type {
        types: Type[];
    }
    interface UnionType extends UnionOrIntersectionType {
    }
    interface IntersectionType extends UnionOrIntersectionType {
    }
    type StructuredType = ObjectType | UnionType | IntersectionType;
    interface EvolvingArrayType extends ObjectType {
        elementType: Type;
        finalArrayType?: Type;
    }
    interface TypeVariable extends Type {
    }
    interface TypeParameter extends TypeVariable {
        constraint: Type;
    }
    interface IndexedAccessType extends TypeVariable {
        objectType: Type;
        indexType: Type;
    }
    interface IndexType extends Type {
        type: TypeVariable | UnionOrIntersectionType;
    }
    enum SignatureKind {
        Call = 0,
        Construct = 1,
    }
    interface Signature {
        declaration: SignatureDeclaration;
        typeParameters: TypeParameter[];
        parameters: Symbol[];
    }
    enum IndexKind {
        String = 0,
        Number = 1,
    }
    interface IndexInfo {
        type: Type;
        isReadonly: boolean;
        declaration?: SignatureDeclaration;
    }
    interface DiagnosticMessage {
        key: string;
        category: DiagnosticCategory;
        code: number;
        message: string;
    }
    /**
     * A linked list of formatted diagnostic messages to be used as part of a multiline message.
     * It is built from the bottom up, leaving the head to be the "main" diagnostic.
     * While it seems that DiagnosticMessageChain is structurally similar to DiagnosticMessage,
     * the difference is that messages are all preformatted in DMC.
     */
    interface DiagnosticMessageChain {
        messageText: string;
        category: DiagnosticCategory;
        code: number;
        next?: DiagnosticMessageChain;
    }
    interface Diagnostic {
        file: SourceFile;
        start: number;
        length: number;
        messageText: string | DiagnosticMessageChain;
        category: DiagnosticCategory;
        code: number;
    }
    enum DiagnosticCategory {
        Warning = 0,
        Error = 1,
        Message = 2,
    }
    enum ModuleResolutionKind {
        Classic = 1,
        NodeJs = 2,
    }
    type CompilerOptionsValue = string | number | boolean | (string | number)[] | string[] | MapLike<string[]>;
    interface CompilerOptions {
        allowJs?: boolean;
        allowSyntheticDefaultImports?: boolean;
        allowUnreachableCode?: boolean;
        allowUnusedLabels?: boolean;
        alwaysStrict?: boolean;
        baseUrl?: string;
        charset?: string;
        declaration?: boolean;
        declarationDir?: string;
        disableSizeLimit?: boolean;
        emitBOM?: boolean;
        emitDecoratorMetadata?: boolean;
        experimentalDecorators?: boolean;
        forceConsistentCasingInFileNames?: boolean;
        importHelpers?: boolean;
        inlineSourceMap?: boolean;
        inlineSources?: boolean;
        isolatedModules?: boolean;
        jsx?: JsxEmit;
        lib?: string[];
        locale?: string;
        mapRoot?: string;
        maxNodeModuleJsDepth?: number;
        module?: ModuleKind;
        moduleResolution?: ModuleResolutionKind;
        newLine?: NewLineKind;
        noEmit?: boolean;
        noEmitHelpers?: boolean;
        noEmitOnError?: boolean;
        noErrorTruncation?: boolean;
        noFallthroughCasesInSwitch?: boolean;
        noImplicitAny?: boolean;
        noImplicitReturns?: boolean;
        noImplicitThis?: boolean;
        noUnusedLocals?: boolean;
        noUnusedParameters?: boolean;
        noImplicitUseStrict?: boolean;
        noLib?: boolean;
        noResolve?: boolean;
        out?: string;
        outDir?: string;
        outFile?: string;
        paths?: MapLike<string[]>;
        preserveConstEnums?: boolean;
        project?: string;
        reactNamespace?: string;
        jsxFactory?: string;
        removeComments?: boolean;
        rootDir?: string;
        rootDirs?: string[];
        skipLibCheck?: boolean;
        skipDefaultLibCheck?: boolean;
        sourceMap?: boolean;
        sourceRoot?: string;
        strictNullChecks?: boolean;
        suppressExcessPropertyErrors?: boolean;
        suppressImplicitAnyIndexErrors?: boolean;
        target?: ScriptTarget;
        traceResolution?: boolean;
        types?: string[];
        /** Paths used to compute primary types search locations */
        typeRoots?: string[];
        [option: string]: CompilerOptionsValue | undefined;
    }
    interface TypeAcquisition {
        enableAutoDiscovery?: boolean;
        enable?: boolean;
        include?: string[];
        exclude?: string[];
        [option: string]: string[] | boolean | undefined;
    }
    interface DiscoverTypingsInfo {
        fileNames: string[];
        projectRootPath: string;
        safeListPath: string;
        packageNameToTypingLocation: Map<string>;
        typeAcquisition: TypeAcquisition;
        compilerOptions: CompilerOptions;
        unresolvedImports: ReadonlyArray<string>;
    }
    enum ModuleKind {
        None = 0,
        CommonJS = 1,
        AMD = 2,
        UMD = 3,
        System = 4,
        ES2015 = 5,
    }
    enum JsxEmit {
        None = 0,
        Preserve = 1,
        React = 2,
    }
    enum NewLineKind {
        CarriageReturnLineFeed = 0,
        LineFeed = 1,
    }
    interface LineAndCharacter {
        line: number;
        character: number;
    }
    enum ScriptKind {
        Unknown = 0,
        JS = 1,
        JSX = 2,
        TS = 3,
        TSX = 4,
    }
    enum ScriptTarget {
        ES3 = 0,
        ES5 = 1,
        ES2015 = 2,
        ES2016 = 3,
        ES2017 = 4,
        ESNext = 5,
        Latest = 5,
    }
    enum LanguageVariant {
        Standard = 0,
        JSX = 1,
    }
    /** Either a parsed command line or a parsed tsconfig.json */
    interface ParsedCommandLine {
        options: CompilerOptions;
        typeAcquisition?: TypeAcquisition;
        fileNames: string[];
        raw?: any;
        errors: Diagnostic[];
        wildcardDirectories?: MapLike<WatchDirectoryFlags>;
        compileOnSave?: boolean;
    }
    enum WatchDirectoryFlags {
        None = 0,
        Recursive = 1,
    }
    interface ExpandResult {
        fileNames: string[];
        wildcardDirectories: MapLike<WatchDirectoryFlags>;
    }
    interface ModuleResolutionHost {
        fileExists(fileName: string): boolean;
        readFile(fileName: string): string;
        trace?(s: string): void;
        directoryExists?(directoryName: string): boolean;
        realpath?(path: string): string;
        getCurrentDirectory?(): string;
        getDirectories?(path: string): string[];
    }
    /**
     * Represents the result of module resolution.
     * Module resolution will pick up tsx/jsx/js files even if '--jsx' and '--allowJs' are turned off.
     * The Program will then filter results based on these flags.
     *
     * Prefer to return a `ResolvedModuleFull` so that the file type does not have to be inferred.
     */
    interface ResolvedModule {
        /** Path of the file the module was resolved to. */
        resolvedFileName: string;
        /**
         * Denotes if 'resolvedFileName' is isExternalLibraryImport and thus should be a proper external module:
         * - be a .d.ts file
         * - use top level imports\exports
         * - don't use tripleslash references
         */
        isExternalLibraryImport?: boolean;
    }
    /**
     * ResolvedModule with an explicitly provided `extension` property.
     * Prefer this over `ResolvedModule`.
     */
    interface ResolvedModuleFull extends ResolvedModule {
        /**
         * Extension of resolvedFileName. This must match what's at the end of resolvedFileName.
         * This is optional for backwards-compatibility, but will be added if not provided.
         */
        extension: Extension;
    }
    enum Extension {
        Ts = 0,
        Tsx = 1,
        Dts = 2,
        Js = 3,
        Jsx = 4,
        LastTypeScriptExtension = 2,
    }
    interface ResolvedModuleWithFailedLookupLocations {
        resolvedModule: ResolvedModuleFull | undefined;
        failedLookupLocations: string[];
    }
    interface ResolvedTypeReferenceDirective {
        primary: boolean;
        resolvedFileName?: string;
    }
    interface ResolvedTypeReferenceDirectiveWithFailedLookupLocations {
        resolvedTypeReferenceDirective: ResolvedTypeReferenceDirective;
        failedLookupLocations: string[];
    }
    interface CompilerHost extends ModuleResolutionHost {
        getSourceFile(fileName: string, languageVersion: ScriptTarget, onError?: (message: string) => void): SourceFile;
        getSourceFileByPath?(fileName: string, path: Path, languageVersion: ScriptTarget, onError?: (message: string) => void): SourceFile;
        getCancellationToken?(): CancellationToken;
        getDefaultLibFileName(options: CompilerOptions): string;
        getDefaultLibLocation?(): string;
        writeFile: WriteFileCallback;
        getCurrentDirectory(): string;
        getDirectories(path: string): string[];
        getCanonicalFileName(fileName: string): string;
        useCaseSensitiveFileNames(): boolean;
        getNewLine(): string;
        resolveModuleNames?(moduleNames: string[], containingFile: string): ResolvedModule[];
        /**
         * This method is a companion for 'resolveModuleNames' and is used to resolve 'types' references to actual type declaration files
         */
        resolveTypeReferenceDirectives?(typeReferenceDirectiveNames: string[], containingFile: string): ResolvedTypeReferenceDirective[];
        getEnvironmentVariable?(name: string): string;
    }
    interface TextSpan {
        start: number;
        length: number;
    }
    interface TextChangeRange {
        span: TextSpan;
        newLength: number;
    }
    interface SyntaxList extends Node {
        _children: Node[];
    }
}
declare namespace ts {
    /** The version of the TypeScript compiler release */
    const version = "2.1.4";
}
declare namespace ts {
    type FileWatcherCallback = (fileName: string, removed?: boolean) => void;
    type DirectoryWatcherCallback = (fileName: string) => void;
    interface WatchedFile {
        fileName: string;
        callback: FileWatcherCallback;
        mtime?: Date;
    }
    interface System {
        args: string[];
        newLine: string;
        useCaseSensitiveFileNames: boolean;
        write(s: string): void;
        readFile(path: string, encoding?: string): string;
        getFileSize?(path: string): number;
        writeFile(path: string, data: string, writeByteOrderMark?: boolean): void;
        /**
         * @pollingInterval - this parameter is used in polling-based watchers and ignored in watchers that
         * use native OS file watching
         */
        watchFile?(path: string, callback: FileWatcherCallback, pollingInterval?: number): FileWatcher;
        watchDirectory?(path: string, callback: DirectoryWatcherCallback, recursive?: boolean): FileWatcher;
        resolvePath(path: string): string;
        fileExists(path: string): boolean;
        directoryExists(path: string): boolean;
        createDirectory(path: string): void;
        getExecutingFilePath(): string;
        getCurrentDirectory(): string;
        getDirectories(path: string): string[];
        readDirectory(path: string, extensions?: string[], exclude?: string[], include?: string[]): string[];
        getModifiedTime?(path: string): Date;
        createHash?(data: string): string;
        getMemoryUsage?(): number;
        exit(exitCode?: number): void;
        realpath?(path: string): string;
        setTimeout?(callback: (...args: any[]) => void, ms: number, ...args: any[]): any;
        clearTimeout?(timeoutId: any): void;
    }
    interface FileWatcher {
        close(): void;
    }
    interface DirectoryWatcher extends FileWatcher {
        directoryName: string;
        referenceCount: number;
    }
    let sys: System;
}
declare namespace ts {
    interface ErrorCallback {
        (message: DiagnosticMessage, length: number): void;
    }
    interface Scanner {
        getStartPos(): number;
        getToken(): SyntaxKind;
        getTextPos(): number;
        getTokenPos(): number;
        getTokenText(): string;
        getTokenValue(): string;
        hasExtendedUnicodeEscape(): boolean;
        hasPrecedingLineBreak(): boolean;
        isIdentifier(): boolean;
        isReservedWord(): boolean;
        isUnterminated(): boolean;
        reScanGreaterToken(): SyntaxKind;
        reScanSlashToken(): SyntaxKind;
        reScanTemplateToken(): SyntaxKind;
        scanJsxIdentifier(): SyntaxKind;
        scanJsxAttributeValue(): SyntaxKind;
        reScanJsxToken(): SyntaxKind;
        scanJsxToken(): SyntaxKind;
        scanJSDocToken(): SyntaxKind;
        scan(): SyntaxKind;
        getText(): string;
        setText(text: string, start?: number, length?: number): void;
        setOnError(onError: ErrorCallback): void;
        setScriptTarget(scriptTarget: ScriptTarget): void;
        setLanguageVariant(variant: LanguageVariant): void;
        setTextPos(textPos: number): void;
        lookAhead<T>(callback: () => T): T;
        scanRange<T>(start: number, length: number, callback: () => T): T;
        tryScan<T>(callback: () => T): T;
    }
    function tokenToString(t: SyntaxKind): string;
    function getPositionOfLineAndCharacter(sourceFile: SourceFile, line: number, character: number): number;
    function getLineAndCharacterOfPosition(sourceFile: SourceFile, position: number): LineAndCharacter;
    function isWhiteSpace(ch: number): boolean;
    /** Does not include line breaks. For that, see isWhiteSpaceLike. */
    function isWhiteSpaceSingleLine(ch: number): boolean;
    function isLineBreak(ch: number): boolean;
    function couldStartTrivia(text: string, pos: number): boolean;
    function forEachLeadingCommentRange<T, U>(text: string, pos: number, cb: (pos: number, end: number, kind: SyntaxKind, hasTrailingNewLine: boolean, state: T) => U, state?: T): U;
    function forEachTrailingCommentRange<T, U>(text: string, pos: number, cb: (pos: number, end: number, kind: SyntaxKind, hasTrailingNewLine: boolean, state: T) => U, state?: T): U;
    function reduceEachLeadingCommentRange<T, U>(text: string, pos: number, cb: (pos: number, end: number, kind: SyntaxKind, hasTrailingNewLine: boolean, state: T, memo: U) => U, state: T, initial: U): U;
    function reduceEachTrailingCommentRange<T, U>(text: string, pos: number, cb: (pos: number, end: number, kind: SyntaxKind, hasTrailingNewLine: boolean, state: T, memo: U) => U, state: T, initial: U): U;
    function getLeadingCommentRanges(text: string, pos: number): CommentRange[];
    function getTrailingCommentRanges(text: string, pos: number): CommentRange[];
    /** Optionally, get the shebang */
    function getShebang(text: string): string;
    function isIdentifierStart(ch: number, languageVersion: ScriptTarget): boolean;
    function isIdentifierPart(ch: number, languageVersion: ScriptTarget): boolean;
    function createScanner(languageVersion: ScriptTarget, skipTrivia: boolean, languageVariant?: LanguageVariant, text?: string, onError?: ErrorCallback, start?: number, length?: number): Scanner;
}
declare namespace ts {
    function getDefaultLibFileName(options: CompilerOptions): string;
    function textSpanEnd(span: TextSpan): number;
    function textSpanIsEmpty(span: TextSpan): boolean;
    function textSpanContainsPosition(span: TextSpan, position: number): boolean;
    function textSpanContainsTextSpan(span: TextSpan, other: TextSpan): boolean;
    function textSpanOverlapsWith(span: TextSpan, other: TextSpan): boolean;
    function textSpanOverlap(span1: TextSpan, span2: TextSpan): TextSpan;
    function textSpanIntersectsWithTextSpan(span: TextSpan, other: TextSpan): boolean;
    function textSpanIntersectsWith(span: TextSpan, start: number, length: number): boolean;
    function decodedTextSpanIntersectsWith(start1: number, length1: number, start2: number, length2: number): boolean;
    function textSpanIntersectsWithPosition(span: TextSpan, position: number): boolean;
    function textSpanIntersection(span1: TextSpan, span2: TextSpan): TextSpan;
    function createTextSpan(start: number, length: number): TextSpan;
    function createTextSpanFromBounds(start: number, end: number): TextSpan;
    function textChangeRangeNewSpan(range: TextChangeRange): TextSpan;
    function textChangeRangeIsUnchanged(range: TextChangeRange): boolean;
    function createTextChangeRange(span: TextSpan, newLength: number): TextChangeRange;
    let unchangedTextChangeRange: TextChangeRange;
    /**
     * Called to merge all the changes that occurred across several versions of a script snapshot
     * into a single change.  i.e. if a user keeps making successive edits to a script we will
     * have a text change from V1 to V2, V2 to V3, ..., Vn.
     *
     * This function will then merge those changes into a single change range valid between V1 and
     * Vn.
     */
    function collapseTextChangeRangesAcrossMultipleVersions(changes: TextChangeRange[]): TextChangeRange;
    function getTypeParameterOwner(d: Declaration): Declaration;
    function isParameterPropertyDeclaration(node: Node): boolean;
    function getCombinedModifierFlags(node: Node): ModifierFlags;
    function getCombinedNodeFlags(node: Node): NodeFlags;
    /**
      * Checks to see if the locale is in the appropriate format,
      * and if it is, attempts to set the appropriate language.
      */
    function validateLocaleAndSetLanguage(locale: string, sys: {
        getExecutingFilePath(): string;
        resolvePath(path: string): string;
        fileExists(fileName: string): boolean;
        readFile(fileName: string): string;
    }, errors?: Diagnostic[]): void;
}
declare namespace ts {
    function createNode(kind: SyntaxKind, pos?: number, end?: number): Node;
    function forEachChild<T>(node: Node, cbNode: (node: Node) => T, cbNodeArray?: (nodes: Node[]) => T): T;
    function createSourceFile(fileName: string, sourceText: string, languageVersion: ScriptTarget, setParentNodes?: boolean, scriptKind?: ScriptKind): SourceFile;
    function parseIsolatedEntityName(text: string, languageVersion: ScriptTarget): EntityName;
    function isExternalModule(file: SourceFile): boolean;
    function updateSourceFile(sourceFile: SourceFile, newText: string, textChangeRange: TextChangeRange, aggressiveChecks?: boolean): SourceFile;
}
declare namespace ts {
    function moduleHasNonRelativeName(moduleName: string): boolean;
    function getEffectiveTypeRoots(options: CompilerOptions, host: {
        directoryExists?: (directoryName: string) => boolean;
        getCurrentDirectory?: () => string;
    }): string[] | undefined;
    /**
     * @param {string | undefined} containingFile - file that contains type reference directive, can be undefined if containing file is unknown.
     * This is possible in case if resolution is performed for directives specified via 'types' parameter. In this case initial path for secondary lookups
     * is assumed to be the same as root directory of the project.
     */
    function resolveTypeReferenceDirective(typeReferenceDirectiveName: string, containingFile: string | undefined, options: CompilerOptions, host: ModuleResolutionHost): ResolvedTypeReferenceDirectiveWithFailedLookupLocations;
    /**
      * Given a set of options, returns the set of type directive names
      *   that should be included for this program automatically.
      * This list could either come from the config file,
      *   or from enumerating the types root + initial secondary types lookup location.
      * More type directives might appear in the program later as a result of loading actual source files;
      *   this list is only the set of defaults that are implicitly included.
      */
    function getAutomaticTypeDirectiveNames(options: CompilerOptions, host: ModuleResolutionHost): string[];
    function resolveModuleName(moduleName: string, containingFile: string, compilerOptions: CompilerOptions, host: ModuleResolutionHost): ResolvedModuleWithFailedLookupLocations;
    function nodeModuleNameResolver(moduleName: string, containingFile: string, compilerOptions: CompilerOptions, host: ModuleResolutionHost): ResolvedModuleWithFailedLookupLocations;
    function classicNameResolver(moduleName: string, containingFile: string, compilerOptions: CompilerOptions, host: ModuleResolutionHost): ResolvedModuleWithFailedLookupLocations;
}
declare namespace ts {
    function findConfigFile(searchPath: string, fileExists: (fileName: string) => boolean, configName?: string): string;
    function resolveTripleslashReference(moduleName: string, containingFile: string): string;
    function createCompilerHost(options: CompilerOptions, setParentNodes?: boolean): CompilerHost;
    function getPreEmitDiagnostics(program: Program, sourceFile?: SourceFile, cancellationToken?: CancellationToken): Diagnostic[];
    interface FormatDiagnosticsHost {
        getCurrentDirectory(): string;
        getCanonicalFileName(fileName: string): string;
        getNewLine(): string;
    }
    function formatDiagnostics(diagnostics: Diagnostic[], host: FormatDiagnosticsHost): string;
    function flattenDiagnosticMessageText(messageText: string | DiagnosticMessageChain, newLine: string): string;
    function createProgram(rootNames: string[], options: CompilerOptions, host?: CompilerHost, oldProgram?: Program): Program;
}
declare namespace ts {
    /**
      * Read tsconfig.json file
      * @param fileName The path to the config file
      */
    function readConfigFile(fileName: string, readFile: (path: string) => string): {
        config?: any;
        error?: Diagnostic;
    };
    /**
      * Parse the text of the tsconfig.json file
      * @param fileName The path to the config file
      * @param jsonText The text of the config file
      */
    function parseConfigFileTextToJson(fileName: string, jsonText: string, stripComments?: boolean): {
        config?: any;
        error?: Diagnostic;
    };
    /**
      * Parse the contents of a config file (tsconfig.json).
      * @param json The contents of the config file to parse
      * @param host Instance of ParseConfigHost used to enumerate files in folder.
      * @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[]): ParsedCommandLine;
    function convertCompileOnSaveOptionFromJson(jsonOption: any, basePath: string, errors: Diagnostic[]): boolean;
    function convertCompilerOptionsFromJson(jsonOptions: any, basePath: string, configFileName?: string): {
        options: CompilerOptions;
        errors: Diagnostic[];
    };
    function convertTypeAcquisitionFromJson(jsonOptions: any, basePath: string, configFileName?: string): {
        options: TypeAcquisition;
        errors: Diagnostic[];
    };
}
declare namespace ts {
    interface Node {
        getSourceFile(): SourceFile;
        getChildCount(sourceFile?: SourceFile): number;
        getChildAt(index: number, sourceFile?: SourceFile): Node;
        getChildren(sourceFile?: SourceFile): Node[];
        getStart(sourceFile?: SourceFile, includeJsDocComment?: boolean): number;
        getFullStart(): number;
        getEnd(): number;
        getWidth(sourceFile?: SourceFile): number;
        getFullWidth(): number;
        getLeadingTriviaWidth(sourceFile?: SourceFile): number;
        getFullText(sourceFile?: SourceFile): string;
        getText(sourceFile?: SourceFile): string;
        getFirstToken(sourceFile?: SourceFile): Node;
        getLastToken(sourceFile?: SourceFile): Node;
    }
    interface Symbol {
        getFlags(): SymbolFlags;
        getName(): string;
        getDeclarations(): Declaration[];
        getDocumentationComment(): SymbolDisplayPart[];
    }
    interface Type {
        getFlags(): TypeFlags;
        getSymbol(): Symbol;
        getProperties(): Symbol[];
        getProperty(propertyName: string): Symbol;
        getApparentProperties(): Symbol[];
        getCallSignatures(): Signature[];
        getConstructSignatures(): Signature[];
        getStringIndexType(): Type;
        getNumberIndexType(): Type;
        getBaseTypes(): ObjectType[];
        getNonNullableType(): Type;
    }
    interface Signature {
        getDeclaration(): SignatureDeclaration;
        getTypeParameters(): Type[];
        getParameters(): Symbol[];
        getReturnType(): Type;
        getDocumentationComment(): SymbolDisplayPart[];
    }
    interface SourceFile {
        getLineAndCharacterOfPosition(pos: number): LineAndCharacter;
        getLineEndOfPosition(pos: number): number;
        getLineStarts(): number[];
        getPositionOfLineAndCharacter(line: number, character: number): number;
        update(newText: string, textChangeRange: TextChangeRange): SourceFile;
    }
    /**
     * Represents an immutable snapshot of a script at a specified time.Once acquired, the
     * snapshot is observably immutable. i.e. the same calls with the same parameters will return
     * the same values.
     */
    interface IScriptSnapshot {
        /** Gets a portion of the script snapshot specified by [start, end). */
        getText(start: number, end: number): string;
        /** Gets the length of this script snapshot. */
        getLength(): number;
        /**
         * Gets the TextChangeRange that describe how the text changed between this text and
         * an older version.  This information is used by the incremental parser to determine
         * what sections of the script need to be re-parsed.  'undefined' can be returned if the
         * change range cannot be determined.  However, in that case, incremental parsing will
         * not happen and the entire document will be re - parsed.
         */
        getChangeRange(oldSnapshot: IScriptSnapshot): TextChangeRange | undefined;
        /** Releases all resources held by this script snapshot */
        dispose?(): void;
    }
    namespace ScriptSnapshot {
        function fromString(text: string): IScriptSnapshot;
    }
    interface PreProcessedFileInfo {
        referencedFiles: FileReference[];
        typeReferenceDirectives: FileReference[];
        importedFiles: FileReference[];
        ambientExternalModules: string[];
        isLibFile: boolean;
    }
    interface HostCancellationToken {
        isCancellationRequested(): boolean;
    }
    interface LanguageServiceHost {
        getCompilationSettings(): CompilerOptions;
        getNewLine?(): string;
        getProjectVersion?(): string;
        getScriptFileNames(): string[];
        getScriptKind?(fileName: string): ScriptKind;
        getScriptVersion(fileName: string): string;
        getScriptSnapshot(fileName: string): IScriptSnapshot | undefined;
        getLocalizedDiagnosticMessages?(): any;
        getCancellationToken?(): HostCancellationToken;
        getCurrentDirectory(): string;
        getDefaultLibFileName(options: CompilerOptions): string;
        log?(s: string): void;
        trace?(s: string): void;
        error?(s: string): void;
        useCaseSensitiveFileNames?(): boolean;
        readDirectory?(path: string, extensions?: string[], exclude?: string[], include?: string[]): string[];
        readFile?(path: string, encoding?: string): string;
        fileExists?(path: string): boolean;
        getTypeRootsVersion?(): number;
        resolveModuleNames?(moduleNames: string[], containingFile: string): ResolvedModule[];
        resolveTypeReferenceDirectives?(typeDirectiveNames: string[], containingFile: string): ResolvedTypeReferenceDirective[];
        directoryExists?(directoryName: string): boolean;
        getDirectories?(directoryName: string): string[];
    }
    interface LanguageService {
        cleanupSemanticCache(): void;
        getSyntacticDiagnostics(fileName: string): Diagnostic[];
        getSemanticDiagnostics(fileName: string): Diagnostic[];
        getCompilerOptionsDiagnostics(): Diagnostic[];
        /**
         * @deprecated Use getEncodedSyntacticClassifications instead.
         */
        getSyntacticClassifications(fileName: string, span: TextSpan): ClassifiedSpan[];
        /**
         * @deprecated Use getEncodedSemanticClassifications instead.
         */
        getSemanticClassifications(fileName: string, span: TextSpan): ClassifiedSpan[];
        getEncodedSyntacticClassifications(fileName: string, span: TextSpan): Classifications;
        getEncodedSemanticClassifications(fileName: string, span: TextSpan): Classifications;
        getCompletionsAtPosition(fileName: string, position: number): CompletionInfo;
        getCompletionEntryDetails(fileName: string, position: number, entryName: string): CompletionEntryDetails;
        getCompletionEntrySymbol(fileName: string, position: number, entryName: string): Symbol;
        getQuickInfoAtPosition(fileName: string, position: number): QuickInfo;
        getNameOrDottedNameSpan(fileName: string, startPos: number, endPos: number): TextSpan;
        getBreakpointStatementAtPosition(fileName: string, position: number): TextSpan;
        getSignatureHelpItems(fileName: string, position: number): SignatureHelpItems;
        getRenameInfo(fileName: string, position: number): RenameInfo;
        findRenameLocations(fileName: string, position: number, findInStrings: boolean, findInComments: boolean): RenameLocation[];
        getDefinitionAtPosition(fileName: string, position: number): DefinitionInfo[];
        getTypeDefinitionAtPosition(fileName: string, position: number): DefinitionInfo[];
        getImplementationAtPosition(fileName: string, position: number): ImplementationLocation[];
        getReferencesAtPosition(fileName: string, position: number): ReferenceEntry[];
        findReferences(fileName: string, position: number): ReferencedSymbol[];
        getDocumentHighlights(fileName: string, position: number, filesToSearch: string[]): DocumentHighlights[];
        /** @deprecated */
        getOccurrencesAtPosition(fileName: string, position: number): ReferenceEntry[];
        getNavigateToItems(searchValue: string, maxResultCount?: number, fileName?: string, excludeDtsFiles?: boolean): NavigateToItem[];
        getNavigationBarItems(fileName: string): NavigationBarItem[];
        getNavigationTree(fileName: string): NavigationTree;
        getOutliningSpans(fileName: string): OutliningSpan[];
        getTodoComments(fileName: string, descriptors: TodoCommentDescriptor[]): TodoComment[];
        getBraceMatchingAtPosition(fileName: string, position: number): TextSpan[];
        getIndentationAtPosition(fileName: string, position: number, options: EditorOptions | EditorSettings): number;
        getFormattingEditsForRange(fileName: string, start: number, end: number, options: FormatCodeOptions | FormatCodeSettings): TextChange[];
        getFormattingEditsForDocument(fileName: string, options: FormatCodeOptions | FormatCodeSettings): TextChange[];
        getFormattingEditsAfterKeystroke(fileName: string, position: number, key: string, options: FormatCodeOptions | FormatCodeSettings): TextChange[];
        getDocCommentTemplateAtPosition(fileName: string, position: number): TextInsertion;
        isValidBraceCompletionAtPosition(fileName: string, position: number, openingBrace: number): boolean;
        getCodeFixesAtPosition(fileName: string, start: number, end: number, errorCodes: number[]): CodeAction[];
        getEmitOutput(fileName: string, emitOnlyDtsFiles?: boolean): EmitOutput;
        getProgram(): Program;
        dispose(): void;
    }
    interface Classifications {
        spans: number[];
        endOfLineState: EndOfLineState;
    }
    interface ClassifiedSpan {
        textSpan: TextSpan;
        classificationType: string;
    }
    /**
     * Navigation bar interface designed for visual studio's dual-column layout.
     * This does not form a proper tree.
     * The navbar is returned as a list of top-level items, each of which has a list of child items.
     * Child items always have an empty array for their `childItems`.
     */
    interface NavigationBarItem {
        text: string;
        kind: string;
        kindModifiers: string;
        spans: TextSpan[];
        childItems: NavigationBarItem[];
        indent: number;
        bolded: boolean;
        grayed: boolean;
    }
    /**
     * Node in a tree of nested declarations in a file.
     * The top node is always a script or module node.
     */
    interface NavigationTree {
        /** Name of the declaration, or a short description, e.g. "<class>". */
        text: string;
        /** A ScriptElementKind */
        kind: string;
        /** ScriptElementKindModifier separated by commas, e.g. "public,abstract" */
        kindModifiers: string;
        /**
         * Spans of the nodes that generated this declaration.
         * There will be more than one if this is the result of merging.
         */
        spans: TextSpan[];
        /** Present if non-empty */
        childItems?: NavigationTree[];
    }
    interface TodoCommentDescriptor {
        text: string;
        priority: number;
    }
    interface TodoComment {
        descriptor: TodoCommentDescriptor;
        message: string;
        position: number;
    }
    class TextChange {
        span: TextSpan;
        newText: string;
    }
    interface FileTextChanges {
        fileName: string;
        textChanges: TextChange[];
    }
    interface CodeAction {
        /** Description of the code action to display in the UI of the editor */
        description: string;
        /** Text changes to apply to each file as part of the code action */
        changes: FileTextChanges[];
    }
    interface TextInsertion {
        newText: string;
        /** The position in newText the caret should point to after the insertion. */
        caretOffset: number;
    }
    interface RenameLocation {
        textSpan: TextSpan;
        fileName: string;
    }
    interface ReferenceEntry {
        textSpan: TextSpan;
        fileName: string;
        isWriteAccess: boolean;
        isDefinition: boolean;
    }
    interface ImplementationLocation {
        textSpan: TextSpan;
        fileName: string;
    }
    interface DocumentHighlights {
        fileName: string;
        highlightSpans: HighlightSpan[];
    }
    namespace HighlightSpanKind {
        const none = "none";
        const definition = "definition";
        const reference = "reference";
        const writtenReference = "writtenReference";
    }
    interface HighlightSpan {
        fileName?: string;
        textSpan: TextSpan;
        kind: string;
    }
    interface NavigateToItem {
        name: string;
        kind: string;
        kindModifiers: string;
        matchKind: string;
        isCaseSensitive: boolean;
        fileName: string;
        textSpan: TextSpan;
        containerName: string;
        containerKind: string;
    }
    enum IndentStyle {
        None = 0,
        Block = 1,
        Smart = 2,
    }
    interface EditorOptions {
        BaseIndentSize?: number;
        IndentSize: number;
        TabSize: number;
        NewLineCharacter: string;
        ConvertTabsToSpaces: boolean;
        IndentStyle: IndentStyle;
    }
    interface EditorSettings {
        baseIndentSize?: number;
        indentSize?: number;
        tabSize?: number;
        newLineCharacter?: string;
        convertTabsToSpaces?: boolean;
        indentStyle?: IndentStyle;
    }
    interface FormatCodeOptions extends EditorOptions {
        InsertSpaceAfterCommaDelimiter: boolean;
        InsertSpaceAfterSemicolonInForStatements: boolean;
        InsertSpaceBeforeAndAfterBinaryOperators: boolean;
        InsertSpaceAfterKeywordsInControlFlowStatements: boolean;
        InsertSpaceAfterFunctionKeywordForAnonymousFunctions: boolean;
        InsertSpaceAfterOpeningAndBeforeClosingNonemptyParenthesis: boolean;
        InsertSpaceAfterOpeningAndBeforeClosingNonemptyBrackets: boolean;
        InsertSpaceAfterOpeningAndBeforeClosingNonemptyBraces?: boolean;
        InsertSpaceAfterOpeningAndBeforeClosingTemplateStringBraces: boolean;
        InsertSpaceAfterOpeningAndBeforeClosingJsxExpressionBraces?: boolean;
        InsertSpaceAfterTypeAssertion?: boolean;
        PlaceOpenBraceOnNewLineForFunctions: boolean;
        PlaceOpenBraceOnNewLineForControlBlocks: boolean;
    }
    interface FormatCodeSettings extends EditorSettings {
        insertSpaceAfterCommaDelimiter?: boolean;
        insertSpaceAfterSemicolonInForStatements?: boolean;
        insertSpaceBeforeAndAfterBinaryOperators?: boolean;
        insertSpaceAfterKeywordsInControlFlowStatements?: boolean;
        insertSpaceAfterFunctionKeywordForAnonymousFunctions?: boolean;
        insertSpaceAfterOpeningAndBeforeClosingNonemptyParenthesis?: boolean;
        insertSpaceAfterOpeningAndBeforeClosingNonemptyBrackets?: boolean;
        insertSpaceAfterOpeningAndBeforeClosingNonemptyBraces?: boolean;
        insertSpaceAfterOpeningAndBeforeClosingTemplateStringBraces?: boolean;
        insertSpaceAfterOpeningAndBeforeClosingJsxExpressionBraces?: boolean;
        insertSpaceAfterTypeAssertion?: boolean;
        placeOpenBraceOnNewLineForFunctions?: boolean;
        placeOpenBraceOnNewLineForControlBlocks?: boolean;
    }
    interface DefinitionInfo {
        fileName: string;
        textSpan: TextSpan;
        kind: string;
        name: string;
        containerKind: string;
        containerName: string;
    }
    interface ReferencedSymbolDefinitionInfo extends DefinitionInfo {
        displayParts: SymbolDisplayPart[];
    }
    interface ReferencedSymbol {
        definition: ReferencedSymbolDefinitionInfo;
        references: ReferenceEntry[];
    }
    enum SymbolDisplayPartKind {
        aliasName = 0,
        className = 1,
        enumName = 2,
        fieldName = 3,
        interfaceName = 4,
        keyword = 5,
        lineBreak = 6,
        numericLiteral = 7,
        stringLiteral = 8,
        localName = 9,
        methodName = 10,
        moduleName = 11,
        operator = 12,
        parameterName = 13,
        propertyName = 14,
        punctuation = 15,
        space = 16,
        text = 17,
        typeParameterName = 18,
        enumMemberName = 19,
        functionName = 20,
        regularExpressionLiteral = 21,
    }
    interface SymbolDisplayPart {
        text: string;
        kind: string;
    }
    interface QuickInfo {
        kind: string;
        kindModifiers: string;
        textSpan: TextSpan;
        displayParts: SymbolDisplayPart[];
        documentation: SymbolDisplayPart[];
    }
    interface RenameInfo {
        canRename: boolean;
        localizedErrorMessage: string;
        displayName: string;
        fullDisplayName: string;
        kind: string;
        kindModifiers: string;
        triggerSpan: TextSpan;
    }
    interface SignatureHelpParameter {
        name: string;
        documentation: SymbolDisplayPart[];
        displayParts: SymbolDisplayPart[];
        isOptional: boolean;
    }
    /**
     * Represents a single signature to show in signature help.
     * The id is used for subsequent calls into the language service to ask questions about the
     * signature help item in the context of any documents that have been updated.  i.e. after
     * an edit has happened, while signature help is still active, the host can ask important
     * questions like 'what parameter is the user currently contained within?'.
     */
    interface SignatureHelpItem {
        isVariadic: boolean;
        prefixDisplayParts: SymbolDisplayPart[];
        suffixDisplayParts: SymbolDisplayPart[];
        separatorDisplayParts: SymbolDisplayPart[];
        parameters: SignatureHelpParameter[];
        documentation: SymbolDisplayPart[];
    }
    /**
     * Represents a set of signature help items, and the preferred item that should be selected.
     */
    interface SignatureHelpItems {
        items: SignatureHelpItem[];
        applicableSpan: TextSpan;
        selectedItemIndex: number;
        argumentIndex: number;
        argumentCount: number;
    }
    interface CompletionInfo {
        isGlobalCompletion: boolean;
        isMemberCompletion: boolean;
        /**
         * true when the current location also allows for a new identifier
         */
        isNewIdentifierLocation: boolean;
        entries: CompletionEntry[];
    }
    interface CompletionEntry {
        name: string;
        kind: string;
        kindModifiers: string;
        sortText: string;
        /**
          * An optional span that indicates the text to be replaced by this completion item. It will be
          * set if the required span differs from the one generated by the default replacement behavior and should
          * be used in that case
          */
        replacementSpan?: TextSpan;
    }
    interface CompletionEntryDetails {
        name: string;
        kind: string;
        kindModifiers: string;
        displayParts: SymbolDisplayPart[];
        documentation: SymbolDisplayPart[];
    }
    interface OutliningSpan {
        /** The span of the document to actually collapse. */
        textSpan: TextSpan;
        /** The span of the document to display when the user hovers over the collapsed span. */
        hintSpan: TextSpan;
        /** The text to display in the editor for the collapsed region. */
        bannerText: string;
        /**
          * Whether or not this region should be automatically collapsed when
          * the 'Collapse to Definitions' command is invoked.
          */
        autoCollapse: boolean;
    }
    interface EmitOutput {
        outputFiles: OutputFile[];
        emitSkipped: boolean;
    }
    enum OutputFileType {
        JavaScript = 0,
        SourceMap = 1,
        Declaration = 2,
    }
    interface OutputFile {
        name: string;
        writeByteOrderMark: boolean;
        text: string;
    }
    enum EndOfLineState {
        None = 0,
        InMultiLineCommentTrivia = 1,
        InSingleQuoteStringLiteral = 2,
        InDoubleQuoteStringLiteral = 3,
        InTemplateHeadOrNoSubstitutionTemplate = 4,
        InTemplateMiddleOrTail = 5,
        InTemplateSubstitutionPosition = 6,
    }
    enum TokenClass {
        Punctuation = 0,
        Keyword = 1,
        Operator = 2,
        Comment = 3,
        Whitespace = 4,
        Identifier = 5,
        NumberLiteral = 6,
        StringLiteral = 7,
        RegExpLiteral = 8,
    }
    interface ClassificationResult {
        finalLexState: EndOfLineState;
        entries: ClassificationInfo[];
    }
    interface ClassificationInfo {
        length: number;
        classification: TokenClass;
    }
    interface Classifier {
        /**
         * Gives lexical classifications of tokens on a line without any syntactic context.
         * For instance, a token consisting of the text 'string' can be either an identifier
         * named 'string' or the keyword 'string', however, because this classifier is not aware,
         * it relies on certain heuristics to give acceptable results. For classifications where
         * speed trumps accuracy, this function is preferable; however, for true accuracy, the
         * syntactic classifier is ideal. In fact, in certain editing scenarios, combining the
         * lexical, syntactic, and semantic classifiers may issue the best user experience.
         *
         * @param text                      The text of a line to classify.
         * @param lexState                  The state of the lexical classifier at the end of the previous line.
         * @param syntacticClassifierAbsent Whether the client is *not* using a syntactic classifier.
         *                                  If there is no syntactic classifier (syntacticClassifierAbsent=true),
         *                                  certain heuristics may be used in its place; however, if there is a
         *                                  syntactic classifier (syntacticClassifierAbsent=false), certain
         *                                  classifications which may be incorrectly categorized will be given
         *                                  back as Identifiers in order to allow the syntactic classifier to
         *                                  subsume the classification.
         * @deprecated Use getLexicalClassifications instead.
         */
        getClassificationsForLine(text: string, lexState: EndOfLineState, syntacticClassifierAbsent: boolean): ClassificationResult;
        getEncodedLexicalClassifications(text: string, endOfLineState: EndOfLineState, syntacticClassifierAbsent: boolean): Classifications;
    }
    namespace ScriptElementKind {
        const unknown = "";
        const warning = "warning";
        /** predefined type (void) or keyword (class) */
        const keyword = "keyword";
        /** top level script node */
        const scriptElement = "script";
        /** module foo {} */
        const moduleElement = "module";
        /** class X {} */
        const classElement = "class";
        /** var x = class X {} */
        const localClassElement = "local class";
        /** interface Y {} */
        const interfaceElement = "interface";
        /** type T = ... */
        const typeElement = "type";
        /** enum E */
        const enumElement = "enum";
        const enumMemberElement = "const";
        /**
         * Inside module and script only
         * const v = ..
         */
        const variableElement = "var";
        /** Inside function */
        const localVariableElement = "local var";
        /**
         * Inside module and script only
         * function f() { }
         */
        const functionElement = "function";
        /** Inside function */
        const localFunctionElement = "local function";
        /** class X { [public|private]* foo() {} } */
        const memberFunctionElement = "method";
        /** class X { [public|private]* [get|set] foo:number; } */
        const memberGetAccessorElement = "getter";
        const memberSetAccessorElement = "setter";
        /**
         * class X { [public|private]* foo:number; }
         * interface Y { foo:number; }
         */
        const memberVariableElement = "property";
        /** class X { constructor() { } } */
        const constructorImplementationElement = "constructor";
        /** interface Y { ():number; } */
        const callSignatureElement = "call";
        /** interface Y { []:number; } */
        const indexSignatureElement = "index";
        /** interface Y { new():Y; } */
        const constructSignatureElement = "construct";
        /** function foo(*Y*: string) */
        const parameterElement = "parameter";
        const typeParameterElement = "type parameter";
        const primitiveType = "primitive type";
        const label = "label";
        const alias = "alias";
        const constElement = "const";
        const letElement = "let";
        const directory = "directory";
        const externalModuleName = "external module name";
    }
    namespace ScriptElementKindModifier {
        const none = "";
        const publicMemberModifier = "public";
        const privateMemberModifier = "private";
        const protectedMemberModifier = "protected";
        const exportedModifier = "export";
        const ambientModifier = "declare";
        const staticModifier = "static";
        const abstractModifier = "abstract";
    }
    class ClassificationTypeNames {
        static comment: string;
        static identifier: string;
        static keyword: string;
        static numericLiteral: string;
        static operator: string;
        static stringLiteral: string;
        static whiteSpace: string;
        static text: string;
        static punctuation: string;
        static className: string;
        static enumName: string;
        static interfaceName: string;
        static moduleName: string;
        static typeParameterName: string;
        static typeAliasName: string;
        static parameterName: string;
        static docCommentTagName: string;
        static jsxOpenTagName: string;
        static jsxCloseTagName: string;
        static jsxSelfClosingTagName: string;
        static jsxAttribute: string;
        static jsxText: string;
        static jsxAttributeStringLiteralValue: string;
    }
    enum ClassificationType {
        comment = 1,
        identifier = 2,
        keyword = 3,
        numericLiteral = 4,
        operator = 5,
        stringLiteral = 6,
        regularExpressionLiteral = 7,
        whiteSpace = 8,
        text = 9,
        punctuation = 10,
        className = 11,
        enumName = 12,
        interfaceName = 13,
        moduleName = 14,
        typeParameterName = 15,
        typeAliasName = 16,
        parameterName = 17,
        docCommentTagName = 18,
        jsxOpenTagName = 19,
        jsxCloseTagName = 20,
        jsxSelfClosingTagName = 21,
        jsxAttribute = 22,
        jsxText = 23,
        jsxAttributeStringLiteralValue = 24,
    }
}
declare namespace ts {
    function createClassifier(): Classifier;
}
declare namespace ts {
    /**
      * The document registry represents a store of SourceFile objects that can be shared between
      * multiple LanguageService instances. A LanguageService instance holds on the SourceFile (AST)
      * of files in the context.
      * SourceFile objects account for most of the memory usage by the language service. Sharing
      * the same DocumentRegistry instance between different instances of LanguageService allow
      * for more efficient memory utilization since all projects will share at least the library
      * file (lib.d.ts).
      *
      * A more advanced use of the document registry is to serialize sourceFile objects to disk
      * and re-hydrate them when needed.
      *
      * To create a default DocumentRegistry, use createDocumentRegistry to create one, and pass it
      * to all subsequent createLanguageService calls.
      */
    interface DocumentRegistry {
        /**
          * Request a stored SourceFile with a given fileName and compilationSettings.
          * The first call to acquire will call createLanguageServiceSourceFile to generate
          * the SourceFile if was not found in the registry.
          *
          * @param fileName The name of the file requested
          * @param compilationSettings Some compilation settings like target affects the
          * shape of a the resulting SourceFile. This allows the DocumentRegistry to store
          * multiple copies of the same file for different compilation settings.
          * @parm scriptSnapshot Text of the file. Only used if the file was not found
          * in the registry and a new one was created.
          * @parm version Current version of the file. Only used if the file was not found
          * in the registry and a new one was created.
          */
        acquireDocument(fileName: string, compilationSettings: CompilerOptions, scriptSnapshot: IScriptSnapshot, version: string, scriptKind?: ScriptKind): SourceFile;
        acquireDocumentWithKey(fileName: string, path: Path, compilationSettings: CompilerOptions, key: DocumentRegistryBucketKey, scriptSnapshot: IScriptSnapshot, version: string, scriptKind?: ScriptKind): SourceFile;
        /**
          * Request an updated version of an already existing SourceFile with a given fileName
          * and compilationSettings. The update will in-turn call updateLanguageServiceSourceFile
          * to get an updated SourceFile.
          *
          * @param fileName The name of the file requested
          * @param compilationSettings Some compilation settings like target affects the
          * shape of a the resulting SourceFile. This allows the DocumentRegistry to store
          * multiple copies of the same file for different compilation settings.
          * @param scriptSnapshot Text of the file.
          * @param version Current version of the file.
          */
        updateDocument(fileName: string, compilationSettings: CompilerOptions, scriptSnapshot: IScriptSnapshot, version: string, scriptKind?: ScriptKind): SourceFile;
        updateDocumentWithKey(fileName: string, path: Path, compilationSettings: CompilerOptions, key: DocumentRegistryBucketKey, scriptSnapshot: IScriptSnapshot, version: string, scriptKind?: ScriptKind): SourceFile;
        getKeyForCompilationSettings(settings: CompilerOptions): DocumentRegistryBucketKey;
        /**
          * Informs the DocumentRegistry that a file is not needed any longer.
          *
          * Note: It is not allowed to call release on a SourceFile that was not acquired from
          * this registry originally.
          *
          * @param fileName The name of the file to be released
          * @param compilationSettings The compilation settings used to acquire the file
          */
        releaseDocument(fileName: string, compilationSettings: CompilerOptions): void;
        releaseDocumentWithKey(path: Path, key: DocumentRegistryBucketKey): void;
        reportStats(): string;
    }
    type DocumentRegistryBucketKey = string & {
        __bucketKey: any;
    };
    function createDocumentRegistry(useCaseSensitiveFileNames?: boolean, currentDirectory?: string): DocumentRegistry;
}
declare namespace ts {
    function preProcessFile(sourceText: string, readImportFiles?: boolean, detectJavaScriptImports?: boolean): PreProcessedFileInfo;
}
declare namespace ts {
    interface TranspileOptions {
        compilerOptions?: CompilerOptions;
        fileName?: string;
        reportDiagnostics?: boolean;
        moduleName?: string;
        renamedDependencies?: MapLike<string>;
    }
    interface TranspileOutput {
        outputText: string;
        diagnostics?: Diagnostic[];
        sourceMapText?: string;
    }
    function transpileModule(input: string, transpileOptions: TranspileOptions): TranspileOutput;
    function transpile(input: string, compilerOptions?: CompilerOptions, fileName?: string, diagnostics?: Diagnostic[], moduleName?: string): string;
}
declare namespace ts {
    /** The version of the language service API */
    const servicesVersion = "0.5";
    interface DisplayPartsSymbolWriter extends SymbolWriter {
        displayParts(): SymbolDisplayPart[];
    }
    function toEditorSettings(options: EditorOptions | EditorSettings): EditorSettings;
    function displayPartsToString(displayParts: SymbolDisplayPart[]): string;
    function getDefaultCompilerOptions(): CompilerOptions;
    function getSupportedCodeFixes(): string[];
    function createLanguageServiceSourceFile(fileName: string, scriptSnapshot: IScriptSnapshot, scriptTarget: ScriptTarget, version: string, setNodeParents: boolean, scriptKind?: ScriptKind): SourceFile;
    let disableIncrementalParsing: boolean;
    function updateLanguageServiceSourceFile(sourceFile: SourceFile, scriptSnapshot: IScriptSnapshot, version: string, textChangeRange: TextChangeRange, aggressiveChecks?: boolean): SourceFile;
    function createLanguageService(host: LanguageServiceHost, documentRegistry?: DocumentRegistry): LanguageService;
    /**
      * Get the path of the default library files (lib.d.ts) as distributed with the typescript
      * node package.
      * The functionality is not supported if the ts module is consumed outside of a node module.
      */
    function getDefaultLibFilePath(options: CompilerOptions): string;
}

export = ts;