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;

clear(): void;

Unknown,

EndOfFileToken,

SingleLineCommentTrivia,

MultiLineCommentTrivia,

NewLineTrivia,

WhitespaceTrivia,

// We detect and preserve #! on the first line

ShebangTrivia,

// We detect and provide better error recovery when we encounter a git merge marker. This

// allows us to edit files with git-conflict markers in them in a much more pleasant manner.

ConflictMarkerTrivia,

// Literals

NumericLiteral,

StringLiteral,

RegularExpressionLiteral,

NoSubstitutionTemplateLiteral,

// Pseudo-literals

TemplateHead,

TemplateMiddle,

TemplateTail,

// Punctuation

OpenBraceToken,

CloseBraceToken,

OpenParenToken,

CloseParenToken,

OpenBracketToken,

CloseBracketToken,

DotToken,

DotDotDotToken,

SemicolonToken,

CommaToken,

LessThanToken,

LessThanSlashToken,

GreaterThanToken,

LessThanEqualsToken,

GreaterThanEqualsToken,

EqualsEqualsToken,

ExclamationEqualsToken,

EqualsEqualsEqualsToken,

ExclamationEqualsEqualsToken,

EqualsGreaterThanToken,

PlusToken,

MinusToken,

AsteriskToken,

AsteriskAsteriskToken,

SlashToken,

PercentToken,

PlusPlusToken,

MinusMinusToken,

LessThanLessThanToken,

GreaterThanGreaterThanToken,

GreaterThanGreaterThanGreaterThanToken,

AmpersandToken,

BarToken,

CaretToken,

ExclamationToken,

TildeToken,

AmpersandAmpersandToken,

BarBarToken,

QuestionToken,

ColonToken,

AtToken,

// Assignments

EqualsToken,

PlusEqualsToken,

MinusEqualsToken,

AsteriskEqualsToken,

AsteriskAsteriskEqualsToken,

SlashEqualsToken,

PercentEqualsToken,

LessThanLessThanEqualsToken,

GreaterThanGreaterThanEqualsToken,

GreaterThanGreaterThanGreaterThanEqualsToken,

AmpersandEqualsToken,

BarEqualsToken,

CaretEqualsToken,

// Identifiers

Identifier,

// Reserved words

BreakKeyword,

CaseKeyword,

CatchKeyword,

ClassKeyword,

ConstKeyword,

ContinueKeyword,

DebuggerKeyword,

DefaultKeyword,

DeleteKeyword,

DoKeyword,

ElseKeyword,

EnumKeyword,

ExportKeyword,

ExtendsKeyword,

FalseKeyword,

FinallyKeyword,

ForKeyword,

FunctionKeyword,

IfKeyword,

ImportKeyword,

InKeyword,

InstanceOfKeyword,

NewKeyword,

NullKeyword,

ReturnKeyword,

SuperKeyword,

SwitchKeyword,

ThisKeyword,

ThrowKeyword,

TrueKeyword,

TryKeyword,

TypeOfKeyword,

VarKeyword,

VoidKeyword,

WhileKeyword,

WithKeyword,

// Strict mode reserved words

ImplementsKeyword,

InterfaceKeyword,

LetKeyword,

PackageKeyword,

PrivateKeyword,

ProtectedKeyword,

PublicKeyword,

StaticKeyword,

YieldKeyword,

// Contextual keywords

AbstractKeyword,

AsKeyword,

AnyKeyword,

AsyncKeyword,

AwaitKeyword,

BooleanKeyword,

ConstructorKeyword,

DeclareKeyword,

GetKeyword,

IsKeyword,

ModuleKeyword,

NamespaceKeyword,

ReadonlyKeyword,

RequireKeyword,

NumberKeyword,

SetKeyword,

StringKeyword,

SymbolKeyword,

TypeKeyword,

FromKeyword,

GlobalKeyword,

OfKeyword, // LastKeyword and LastToken

// Parse tree nodes

// Names

QualifiedName,

ComputedPropertyName,

// Signature elements

TypeParameter,

Parameter,

Decorator,

// TypeMember

PropertySignature,

PropertyDeclaration,

MethodSignature,

MethodDeclaration,

Constructor,

GetAccessor,

SetAccessor,

CallSignature,

ConstructSignature,

IndexSignature,

// Type

TypePredicate,

TypeReference,

FunctionType,

ConstructorType,

TypeQuery,

TypeLiteral,

ArrayType,

TupleType,

UnionType,

IntersectionType,

ParenthesizedType,

ThisType,

StringLiteralType,

// Binding patterns

ObjectBindingPattern,

ArrayBindingPattern,

BindingElement,

// Expression

ArrayLiteralExpression,

ObjectLiteralExpression,

PropertyAccessExpression,

ElementAccessExpression,

CallExpression,

NewExpression,

TaggedTemplateExpression,

TypeAssertionExpression,

ParenthesizedExpression,

FunctionExpression,

ArrowFunction,

DeleteExpression,

TypeOfExpression,

VoidExpression,

AwaitExpression,

PrefixUnaryExpression,

PostfixUnaryExpression,

BinaryExpression,

ConditionalExpression,

TemplateExpression,

YieldExpression,

SpreadElementExpression,

ClassExpression,

OmittedExpression,

ExpressionWithTypeArguments,

AsExpression,

// Misc

TemplateSpan,

SemicolonClassElement,

// Element

Block,

VariableStatement,

EmptyStatement,

ExpressionStatement,

IfStatement,

DoStatement,

WhileStatement,

ForStatement,

ForInStatement,

ForOfStatement,

ContinueStatement,

BreakStatement,

ReturnStatement,

WithStatement,

SwitchStatement,

LabeledStatement,

ThrowStatement,

TryStatement,

DebuggerStatement,

VariableDeclaration,

VariableDeclarationList,

FunctionDeclaration,

ClassDeclaration,

InterfaceDeclaration,

TypeAliasDeclaration,

EnumDeclaration,

ModuleDeclaration,

ModuleBlock,

CaseBlock,

ImportEqualsDeclaration,

ImportDeclaration,

ImportClause,

NamespaceImport,

NamedImports,

ImportSpecifier,

ExportAssignment,

ExportDeclaration,

NamedExports,

ExportSpecifier,

MissingDeclaration,

// Module references

ExternalModuleReference,

// JSX

JsxElement,

JsxSelfClosingElement,

JsxOpeningElement,

JsxText,

JsxClosingElement,

JsxAttribute,

JsxSpreadAttribute,

JsxExpression,

// Clauses

CaseClause,

DefaultClause,

HeritageClause,

CatchClause,

// Property assignments

PropertyAssignment,

ShorthandPropertyAssignment,

// Enum

EnumMember,

// Top-level nodes

SourceFile,

// JSDoc nodes

JSDocTypeExpression,

// The * type

JSDocAllType,

// The ? type

JSDocUnknownType,

JSDocArrayType,

JSDocUnionType,

JSDocTupleType,

JSDocNullableType,

JSDocNonNullableType,

JSDocRecordType,

JSDocRecordMember,

JSDocTypeReference,

JSDocOptionalType,

JSDocFunctionType,

JSDocVariadicType,

JSDocConstructorType,

JSDocThisType,

JSDocComment,

JSDocTag,

JSDocParameterTag,

JSDocReturnTag,

JSDocTypeTag,

JSDocTemplateTag,

// Synthesized list

SyntaxList,

NodeArrayNode,

// Enum value count

Count,

// Markers

FirstAssignment = EqualsToken,

LastAssignment = CaretEqualsToken,

FirstReservedWord = BreakKeyword,

LastReservedWord = WithKeyword,

FirstKeyword = BreakKeyword,

LastKeyword = OfKeyword,

FirstFutureReservedWord = ImplementsKeyword,

LastFutureReservedWord = YieldKeyword,

FirstTypeNode = TypePredicate,

LastTypeNode = StringLiteralType,

FirstPunctuation = OpenBraceToken,

LastPunctuation = CaretEqualsToken,

FirstToken = Unknown,

LastToken = LastKeyword,

FirstTriviaToken = SingleLineCommentTrivia,

LastTriviaToken = ConflictMarkerTrivia,

FirstLiteralToken = NumericLiteral,

LastLiteralToken = NoSubstitutionTemplateLiteral,

FirstTemplateToken = NoSubstitutionTemplateLiteral,

LastTemplateToken = TemplateTail,

FirstBinaryOperator = LessThanToken,

LastBinaryOperator = CaretEqualsToken,

FirstNode = QualifiedName,

None = 0,

Export = 1 << 0, // Declarations

Ambient = 1 << 1, // Declarations

Public = 1 << 2, // Property/Method

Private = 1 << 3, // Property/Method

Protected = 1 << 4, // Property/Method

Static = 1 << 5, // Property/Method

Readonly = 1 << 6, // Property/Method

Abstract = 1 << 7, // Class/Method/ConstructSignature

Async = 1 << 8, // Property/Method/Function

Default = 1 << 9, // Function/Class (export default declaration)

Let = 1 << 10, // Variable declaration

Const = 1 << 11, // Variable declaration

Namespace = 1 << 12, // Namespace declaration

ExportContext = 1 << 13, // Export context (initialized by binding)

ContainsThis = 1 << 14, // Interface contains references to "this"

HasImplicitReturn = 1 << 15, // If function implicitly returns on one of codepaths (initialized by binding)

HasExplicitReturn = 1 << 16, // If function has explicit reachable return on one of codepaths (initialized by binding)

GlobalAugmentation = 1 << 17, // Set if module declaration is an augmentation for the global scope

HasClassExtends = 1 << 18, // If the file has a non-ambient class with an extends clause in ES5 or lower (initialized by binding)

HasDecorators = 1 << 19, // If the file has decorators (initialized by binding)

HasParamDecorators = 1 << 20, // If the file has parameter decorators (initialized by binding)

HasAsyncFunctions = 1 << 21, // If the file has async functions (initialized by binding)

DisallowInContext = 1 << 22, // If node was parsed in a context where 'in-expressions' are not allowed

YieldContext = 1 << 23, // If node was parsed in the 'yield' context created when parsing a generator

DecoratorContext = 1 << 24, // If node was parsed as part of a decorator

AwaitContext = 1 << 25, // If node was parsed in the 'await' context created when parsing an async function

ThisNodeHasError = 1 << 26, // If the parser encountered an error when parsing the code that created this node

JavaScriptFile = 1 << 27, // If node was parsed in a JavaScript

ThisNodeOrAnySubNodesHasError = 1 << 28, // If this node or any of its children had an error

HasAggregatedChildData = 1 << 29, // If we've computed data from children and cached it in this node

Modifier = Export | Ambient | Public | Private | Protected | Static | Abstract | Default | Async,

AccessibilityModifier = Public | Private | Protected,

BlockScoped = Let | Const,

ReachabilityCheckFlags = HasImplicitReturn | HasExplicitReturn,

EmitHelperFlags = HasClassExtends | HasDecorators | HasParamDecorators | HasAsyncFunctions,

// Parsing context flags

ContextFlags = DisallowInContext | YieldContext | DecoratorContext | AwaitContext,

// Exclude these flags when parsing a Type

TypeExcludesFlags = YieldContext | AwaitContext,

None = 0,

/** An element from a named property of the JSX.IntrinsicElements interface */

IntrinsicNamedElement = 1 << 0,

/** An element inferred from the string index signature of the JSX.IntrinsicElements interface */

IntrinsicIndexedElement = 1 << 1,

/** An element backed by a class, class-like, or function value */

ValueElement = 1 << 2,

/** Element resolution failed */

UnknownElement = 1 << 4,

IntrinsicElement = IntrinsicNamedElement | IntrinsicIndexedElement,

Succeeded = 1, // Should be truthy

Failed = 2,

FailedAndReported = 3

kind: SyntaxKind;

flags: NodeFlags;

/* @internal */ transformFlags?: TransformFlags;

/* @internal */ excludeTransformFlags?: TransformFlags;

decorators?: NodeArray<Decorator>; // Array of decorators (in document order)

modifiers?: ModifiersArray; // Array of modifiers

/* @internal */ id?: number; // Unique id (used to look up NodeLinks)

parent?: Node; // Parent node (initialized by binding)

/* @internal */ original?: Node; // The original node if this is an updated node.

/* @internal */ startsOnNewLine?: boolean; // Whether a synthesized node should start on a new line (used by transforms).

/* @internal */ jsDocComment?: JSDocComment; // JSDoc for the node, if it has any. Only for .js files.

/* @internal */ symbol?: Symbol; // Symbol declared by node (initialized by binding)

/* @internal */ locals?: SymbolTable; // Locals associated with node (initialized by binding)

/* @internal */ nextContainer?: Node; // Next container in declaration order (initialized by binding)

/* @internal */ localSymbol?: Symbol; // Local symbol declared by node (initialized by binding only for exported nodes)

// Must have same layout as PropertyAccess

left: EntityName;

right: Identifier;

name: Identifier;

constraint?: TypeNode;

// For error recovery purposes.

expression?: Expression;

name?: PropertyName;

typeParameters?: NodeArray<TypeParameterDeclaration>;

parameters: NodeArray<ParameterDeclaration>;

type?: TypeNode;

parent?: VariableDeclarationList;

name: BindingName; // Declared variable name

type?: TypeNode; // Optional type annotation

initializer?: Expression; // Optional initializer

dotDotDotToken?: Node; // Present on rest parameter

name: BindingName; // Declared parameter name

questionToken?: Node; // Present on optional parameter

type?: TypeNode; // Optional type annotation

initializer?: Expression; // Optional initializer

propertyName?: PropertyName; // Binding property name (in object binding pattern)

dotDotDotToken?: Node; // Present on rest binding element

name: BindingName; // Declared binding element name

initializer?: Expression; // Optional initializer

name: PropertyName; // Declared property name

questionToken?: Node; // Present on optional property

type?: TypeNode; // Optional type annotation

initializer?: Expression; // Optional initializer

questionToken?: Node; // Present for use with reporting a grammar error

name: PropertyName;

type?: TypeNode;

initializer?: Expression; // Optional initializer

_propertyAssignmentBrand: any;

name: PropertyName;

questionToken?: Node;

initializer: Expression;

name: Identifier;

questionToken?: Node;

// used when ObjectLiteralExpression is used in ObjectAssignmentPattern

// it is grammar error to appear in actual object initializer

equalsToken?: Node;

objectAssignmentInitializer?: Expression;

propertyName?: PropertyName;

dotDotDotToken?: Node;

name: DeclarationName;

questionToken?: Node;

type?: TypeNode;

initializer?: Expression;

_functionLikeDeclarationBrand: any;

asteriskToken?: Node;

questionToken?: Node;

body?: Block | Expression;

_accessorDeclarationBrand: any;

name: PropertyName;

body: FunctionBody;

left: Expression;

operatorToken: Node;

right: Expression;

condition: Expression;

questionToken: Node;

whenTrue: Expression;

colonToken: Node;

whenFalse: Expression;

text: string;

isUnterminated?: boolean;

hasExtendedUnicodeEscape?: boolean;

/* @internal */

isOctalLiteral?: boolean;