typescript
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TypeScript is a language for application scale JavaScript development
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TypeScript
/// <reference path="../node/node.d.ts" preserve="true" />
import { CompletionItemKind } from "#enums/completionItemKind";
import { DiagnosticCategory } from "#enums/diagnosticCategory";
import { ElementFlags } from "#enums/elementFlags";
import { ModuleKind } from "#enums/moduleKind";
import { NodeBuilderFlags } from "#enums/nodeBuilderFlags";
import { ObjectFlags } from "#enums/objectFlags";
import { SignatureFlags } from "#enums/signatureFlags";
import { SignatureKind } from "#enums/signatureKind";
import { SymbolFlags } from "#enums/symbolFlags";
import { TypeFlags } from "#enums/typeFlags";
import { TypePredicateKind } from "#enums/typePredicateKind";
import { type __String, type Expression, type Identifier, ModifierFlags, type Node, type Path, type SourceFile, type SyntaxKind, type TypeNode } from "../../ast/index.ts";
import type { APIOptions, LSPConnectionOptions } from "../options.ts";
import type { CompilerOptions, ConfigResponse, DocumentIdentifier, DocumentPosition, LSPUpdateSnapshotParams, ProjectResponse, SignatureResponse, SourceFileMetadata, SymbolResponse, TypeResponse, UpdateSnapshotParams, UpdateSnapshotResponse } from "../proto.ts";
import { SourceFileCache } from "../sourceFileCache.ts";
import type { RequestTiming, TimingAccumulators, TimingInfo } from "../timing.ts";
import { Client, type ClientSocketOptions, type ClientSpawnOptions } from "./client.ts";
import type { AssertsIdentifierTypePredicate, AssertsThisTypePredicate, BigIntLiteralType, BooleanLiteralType, CompletionEntry, CompletionInfo, CompletionOptions, ConditionalType, Diagnostic, FreshableType, IdentifierTypePredicate, IndexedAccessType, IndexInfo, IndexType, InterfaceType, IntersectionType, IntrinsicType, JSDocTagInfo, LiteralType, NumberLiteralType, ObjectType, StringLiteralType, StringMappingType, SubstitutionType, TemplateLiteralType, ThisTypePredicate, TupleType, Type, TypeParameter, TypePredicate, TypePredicateBase, TypeReference, UnionOrIntersectionType, UnionType } from "./types.ts";
export { documentURIToFileName, fileNameToDocumentURI } from "../path.ts";
export { CompletionItemKind, DiagnosticCategory, ElementFlags, ModifierFlags, ModuleKind, NodeBuilderFlags, ObjectFlags, SignatureFlags, SignatureKind, SymbolFlags, TypeFlags, TypePredicateKind };
export type { APIOptions, AssertsIdentifierTypePredicate, AssertsThisTypePredicate, BigIntLiteralType, BooleanLiteralType, ClientSocketOptions, ClientSpawnOptions, CompilerOptions, CompletionEntry, CompletionInfo, CompletionOptions, ConditionalType, Diagnostic, DocumentIdentifier, DocumentPosition, FreshableType, IdentifierTypePredicate, IndexedAccessType, IndexInfo, IndexType, InterfaceType, IntersectionType, IntrinsicType, JSDocTagInfo, LiteralType, LSPConnectionOptions, NumberLiteralType, ObjectType, RequestTiming, SourceFileMetadata, StringLiteralType, StringMappingType, SubstitutionType, TemplateLiteralType, ThisTypePredicate, TimingAccumulators, TimingInfo, TupleType, Type, TypeParameter, TypePredicate, TypePredicateBase, TypeReference, UnionOrIntersectionType, UnionType };
export declare class API<FromLSP extends boolean = false> {
private client;
private sourceFileCache;
private toPath;
private initialized;
private activeSnapshots;
private latestSnapshot;
readonly internal: InternalAPI;
constructor(options?: APIOptions | LSPConnectionOptions);
/**
* Create an API instance from an existing LSP connection's API session.
* Use this when connecting to an API pipe provided by an LSP server via custom/initializeAPISession.
*/
static fromLSPConnection(options: LSPConnectionOptions): Promise<API<true>>;
private ensureInitialized;
parseConfigFile(file: DocumentIdentifier): Promise<ConfigResponse>;
updateSnapshot(params?: FromLSP extends true ? LSPUpdateSnapshotParams : UpdateSnapshotParams): Promise<Snapshot>;
close(): Promise<void>;
clearSourceFileCache(): void;
/**
* Returns a snapshot of collected timing information for requests made
* through this API instance: client-measured round-trip latency and bytes
* transferred, folded together with the server's own per-request processing
* time and an estimated transport overhead (round-trip minus server time).
*
* Fetching the snapshot issues a lightweight request to the server to
* retrieve its timing collection. Collection must be enabled via the
* `collectTiming` option; when it is not, the returned snapshot has
* `enabled: false` and zeroed totals.
*/
getTimingInfo(): Promise<TimingInfo>;
/** Clears all accumulated timing totals and recent-request history, on both the client and the server. */
resetTimingInfo(): Promise<void>;
}
export declare class InternalAPI {
private client;
private ensureInitialized;
/** @internal */
constructor(client: Client, ensureInitialized: () => Promise<void>);
startCPUProfile(dir: string): Promise<void>;
stopCPUProfile(): Promise<string>;
saveHeapProfile(dir: string): Promise<string>;
}
export declare class Snapshot {
readonly id: number;
private projectMap;
private toPath;
private client;
private disposed;
private onDispose;
private snapshotRegistry;
constructor(data: UpdateSnapshotResponse, client: Client, sourceFileCache: SourceFileCache, toPath: (fileName: string) => Path, onDispose: () => void);
getProjects(): readonly Project[];
getProject(configFileName: string): Project | undefined;
getDefaultProjectForFile(file: DocumentIdentifier): Promise<Project | undefined>;
[globalThis.Symbol.dispose](): void;
dispose(): Promise<void>;
isDisposed(): boolean;
private ensureNotDisposed;
}
declare class SnapshotObjectRegistry {
private readonly symbols;
private readonly client;
private readonly snapshotId;
private readonly resolveProject;
constructor(client: Client, snapshotId: number, resolveProject: (projectId: Path) => Project | undefined);
/** Resolve a project id (a config file path) to its Project within this snapshot. */
getProject(projectId: Path): Project | undefined;
getOrCreateSymbol(data: SymbolResponse): Symbol;
getSymbol(id: number): Symbol | undefined;
clear(): void;
fetchSymbol(source: Symbol | Signature | Type, method: string, handle: number | undefined, projectId?: Path): Promise<Symbol>;
fetchSymbols(source: Symbol | Signature | Type, method: string, handles?: readonly number[], projectId?: Path): Promise<readonly Symbol[]>;
}
declare class ProjectObjectRegistry {
private client;
private snapshotId;
private project;
private snapshotRegistry;
private types;
private signatures;
constructor(client: Client, snapshotId: number, project: Project, snapshotRegistry: SnapshotObjectRegistry);
getOrCreateSymbol(data: SymbolResponse): Symbol;
getSymbol(id: number): Symbol | undefined;
getOrCreateType(data: TypeResponse): TypeObject;
getType(id: number): TypeObject | undefined;
getOrCreateSignature(data: SignatureResponse): Signature;
getSignature(id: number): Signature | undefined;
clear(): void;
fetchType<T extends Type>(source: Symbol | Signature | Type, method: string, handle: number | false | undefined): Promise<T>;
fetchSymbol(source: Symbol | Signature | Type, method: string, handle: number | undefined): Promise<Symbol>;
fetchSignature(source: Symbol | Signature | Type, method: string, handle: number | undefined): Promise<Signature>;
fetchTypes(source: Symbol | Signature | Type, method: string, handles?: readonly number[]): Promise<readonly Type[]>;
fetchSymbols(source: Symbol | Signature | Type, method: string, handles?: readonly number[]): Promise<readonly Symbol[]>;
fetchBaseTypes(source: Type): Promise<readonly Type[]>;
}
export declare class Project {
readonly id: Path;
readonly configFileName: string;
readonly compilerOptions: CompilerOptions;
readonly rootFiles: readonly string[];
readonly program: Program;
readonly checker: Checker;
readonly emitter: Emitter;
private client;
constructor(data: ProjectResponse, snapshotId: number, client: Client, sourceFileCache: SourceFileCache, toPath: (fileName: string) => Path, snapshotRegistry: SnapshotObjectRegistry);
dispose(): void;
}
export declare class Program {
private snapshotId;
private project;
private client;
private sourceFileCache;
private toPath;
private decoder;
private sourceFileMetadataCache;
constructor(snapshotId: number, project: Project, client: Client, sourceFileCache: SourceFileCache, toPath: (fileName: string) => Path);
getCompilerOptions(): CompilerOptions;
getSourceFile(file: DocumentIdentifier): Promise<SourceFile | undefined>;
getSourceFileNames(): Promise<readonly string[]>;
/**
* Returns program-stored metadata for the given source file, or `undefined` if the file
* is not part of the program. Metadata is fetched lazily per file and cached on this
* `Program` instance.
*/
getSourceFileMetadata(fileName: string): Promise<SourceFileMetadata | undefined>;
/**
* Returns program-stored metadata for the source file at the given path, or `undefined`
* if the file is not part of the program. Like {@link getSourceFileMetadata}, but skips
* the file name to path conversion. Metadata is fetched lazily per file and cached on
* this `Program` instance.
*/
getSourceFileMetadataByPath(path: Path): Promise<SourceFileMetadata | undefined>;
private fetchSourceFileMetadata;
/**
* Returns whether the given source file was loaded as part of an external library
* (e.g. a dependency resolved from `node_modules`). The underlying program metadata is
* fetched lazily per file and cached on this `Program` instance.
*/
isSourceFileFromExternalLibrary(file: SourceFile): Promise<boolean>;
/**
* Returns whether the given source file is a default library file (e.g. `lib.d.ts`).
* The underlying program metadata is fetched lazily per file and cached on this
* `Program` instance.
*/
isSourceFileDefaultLibrary(file: SourceFile): Promise<boolean>;
/**
* Get syntactic (parse) diagnostics for a specific file or all files.
* @param file - Optional file to get diagnostics for. If omitted, returns diagnostics for all files.
*/
getSyntacticDiagnostics(file?: DocumentIdentifier): Promise<readonly Diagnostic[]>;
/**
* Get binder diagnostics for a specific file or all files.
* @param file - Optional file to get diagnostics for. If omitted, returns diagnostics for all files.
*/
getBindDiagnostics(file?: DocumentIdentifier): Promise<readonly Diagnostic[]>;
/**
* Get semantic (type-check) diagnostics for a specific file or all files.
* @param file - Optional file to get diagnostics for. If omitted, returns diagnostics for all files.
*/
getSemanticDiagnostics(file?: DocumentIdentifier): Promise<readonly Diagnostic[]>;
/**
* Get suggestion diagnostics for a specific file or all files.
* @param file - Optional file to get diagnostics for. If omitted, returns diagnostics for all files.
*/
getSuggestionDiagnostics(file?: DocumentIdentifier): Promise<readonly Diagnostic[]>;
/**
* Get declaration emit diagnostics for a specific file or all files.
* @param file - Optional file to get diagnostics for. If omitted, returns diagnostics for all files.
*/
getDeclarationDiagnostics(file?: DocumentIdentifier): Promise<readonly Diagnostic[]>;
/**
* Get program-wide diagnostics for the project, including compiler options diagnostics.
*/
getProgramDiagnostics(): Promise<readonly Diagnostic[]>;
/**
* Get global (non-file-specific) semantic diagnostics for the project.
*/
getGlobalDiagnostics(): Promise<readonly Diagnostic[]>;
/**
* Get config file parsing diagnostics for the project.
*/
getConfigFileParsingDiagnostics(): Promise<readonly Diagnostic[]>;
}
export declare class Checker {
private snapshotId;
private project;
private client;
private objectRegistry;
private wellKnownSymbols;
constructor(snapshotId: number, project: Project, client: Client, objectRegistry: ProjectObjectRegistry);
dispose(): void;
getSymbolAtLocation(node: Node): Promise<Symbol | undefined>;
getSymbolAtLocation(nodes: readonly Node[]): Promise<(Symbol | undefined)[]>;
getSymbolAtPosition(file: DocumentIdentifier, position: number): Promise<Symbol | undefined>;
getSymbolAtPosition(file: DocumentIdentifier, positions: readonly number[]): Promise<(Symbol | undefined)[]>;
getTypeOfSymbol(symbol: Symbol): Promise<Type | undefined>;
getTypeOfSymbol(symbols: readonly Symbol[]): Promise<(Type | undefined)[]>;
/**
* Get the declared type of a symbol. Always returns a type; for symbols whose
* declared type cannot be determined the checker yields the error type (use
* {@link Type.isErrorType} to detect it).
*/
getDeclaredTypeOfSymbol(symbol: Symbol): Promise<Type>;
getReferencesToSymbolInFile(file: DocumentIdentifier, symbol: Symbol): Promise<NodeHandle[]>;
getReferencedSymbolsForNode(node: Node, position: number): Promise<ReferencedSymbolEntry[]>;
getSignatureUsage(signatureDecl: Node): Promise<SignatureUsage[]>;
getCompletionsAtPosition(document: string, position: number, options?: CompletionOptions): Promise<CompletionInfo | undefined>;
getTypeAtLocation(node: Node): Promise<Type | undefined>;
getTypeAtLocation(nodes: readonly Node[]): Promise<(Type | undefined)[]>;
getSignaturesOfType(type: Type, kind: SignatureKind): Promise<readonly Signature[]>;
getResolvedSignature(node: Node): Promise<Signature | undefined>;
getTypeAtPosition(file: DocumentIdentifier, position: number): Promise<Type | undefined>;
getTypeAtPosition(file: DocumentIdentifier, positions: readonly number[]): Promise<(Type | undefined)[]>;
resolveName(name: string, meaning: SymbolFlags, location?: Node | DocumentPosition, excludeGlobals?: boolean): Promise<Symbol | undefined>;
getResolvedSymbol(node: Identifier): Promise<Symbol | undefined>;
getContextualType(node: Expression): Promise<Type | undefined>;
getBaseTypeOfLiteralType(type: Type): Promise<Type | undefined>;
getNonNullableType(type: Type): Promise<Type | undefined>;
getTypeFromTypeNode(node: TypeNode): Promise<Type | undefined>;
getWidenedType(type: Type): Promise<Type | undefined>;
getParameterType(signature: Signature, index: number): Promise<Type | undefined>;
isArrayLikeType(type: Type): Promise<boolean>;
isTypeAssignableTo(source: Type, target: Type): Promise<boolean>;
getShorthandAssignmentValueSymbol(node: Node): Promise<Symbol | undefined>;
/**
* Get the type of a symbol as narrowed at a specific location. Always returns
* a type; for symbols whose type cannot be determined the checker yields the
* error type (use {@link Type.isErrorType} to detect it).
*/
getTypeOfSymbolAtLocation(symbol: Symbol, location: Node): Promise<Type>;
private getIntrinsicType;
getAnyType(): Promise<Type>;
getStringType(): Promise<Type>;
getNumberType(): Promise<Type>;
getBooleanType(): Promise<Type>;
getVoidType(): Promise<Type>;
getUndefinedType(): Promise<Type>;
getNullType(): Promise<Type>;
getNeverType(): Promise<Type>;
getUnknownType(): Promise<Type>;
getBigIntType(): Promise<Type>;
getESSymbolType(): Promise<Type>;
typeToTypeNode(type: Type, enclosingDeclaration?: Node, flags?: number): Promise<TypeNode | undefined>;
signatureToSignatureDeclaration(signature: Signature, kind: SyntaxKind, enclosingDeclaration?: Node, flags?: NodeBuilderFlags): Promise<Node | undefined>;
typeToString(type: Type, enclosingDeclaration?: Node, flags?: number): Promise<string>;
isContextSensitive(node: Node): Promise<boolean>;
isArrayType(type: Type): Promise<boolean>;
isTupleType(type: Type): Promise<boolean>;
getReturnTypeOfSignature(signature: Signature): Promise<Type | undefined>;
getRestTypeOfSignature(signature: Signature): Promise<Type | undefined>;
getTypePredicateOfSignature(signature: Signature): Promise<TypePredicate | undefined>;
/**
* Get the base types of a class or interface type. A type with no base types
* yields an empty array.
*/
getBaseTypes(type: InterfaceType): Promise<readonly Type[]>;
getApparentType(type: Type): Promise<Type | undefined>;
getPropertiesOfType(type: Type): Promise<readonly Symbol[]>;
getIndexInfosOfType(type: Type): Promise<readonly IndexInfo[]>;
/**
* Get the constraint of a type parameter (the `T` in `<U extends T>`), or
* undefined if it has none.
*/
getConstraintOfTypeParameter(type: TypeParameter): Promise<Type | undefined>;
getBaseConstraintOfType(type: Type): Promise<Type | undefined>;
getPropertyOfType(type: Type, name: string): Promise<Symbol | undefined>;
getConstantValue(node: Node): Promise<string | number | undefined>;
getSignatureFromDeclaration(node: Node): Promise<Signature | undefined>;
getExportSpecifierLocalTargetSymbol(node: Node): Promise<Symbol | undefined>;
/**
* Follow all aliases to get the original symbol. Always returns a symbol; for
* an unresolved alias the checker yields the unknown symbol (use
* {@link Checker.isUnknownSymbol} to detect it).
*/
getAliasedSymbol(symbol: Symbol): Promise<Symbol>;
getImmediateAliasedSymbol(symbol: Symbol): Promise<Symbol | undefined>;
/**
* Fetch (once, then cache) the handle ids of the per-checker singleton
* symbols (unknown, undefined, arguments). These ids are stable for the life
* of the project's checker, so identity checks against them are local after
* the first call.
*/
private getWellKnownSymbols;
/**
* Returns `true` if the symbol is the checker's "unknown" symbol (e.g. the
* result of {@link Checker.getAliasedSymbol} on an unresolved alias).
*/
isUnknownSymbol(symbol: Symbol): Promise<boolean>;
/**
* Returns `true` if the symbol is the checker's "undefined" symbol.
*/
isUndefinedSymbol(symbol: Symbol): Promise<boolean>;
/**
* Returns `true` if the symbol is the checker's "arguments" symbol.
*/
isArgumentsSymbol(symbol: Symbol): Promise<boolean>;
getExportsOfModule(symbol: Symbol): Promise<readonly Symbol[]>;
getMemberInModuleExports(symbol: Symbol, name: string): Promise<Symbol | undefined>;
getJsDocTagsOfSymbol(symbol: Symbol): Promise<readonly JSDocTagInfo[]>;
getDocumentationCommentOfSymbol(symbol: Symbol): Promise<string>;
/**
* Get the type arguments of a type reference (e.g. the `string` in `Array<string>`).
*/
getTypeArguments(type: TypeReference): Promise<readonly Type[]>;
}
export interface PrintNodeOptions {
preserveSourceNewlines?: boolean | undefined;
neverAsciiEscape?: boolean | undefined;
terminateUnterminatedLiterals?: boolean | undefined;
}
export declare class Emitter {
private client;
constructor(client: Client);
printNode(node: Node, options?: PrintNodeOptions): Promise<string>;
}
export declare class NodeHandle {
/**
* The project this handle was produced in, used as the default for {@link resolve}.
* Node handles are only meaningful within a project's program, so the producing project
* is remembered so callers don't have to pass it explicitly.
*/
private readonly canonicalProject;
readonly index: number;
readonly kind: SyntaxKind;
readonly path: Path;
constructor(handle: string, canonicalProject: Project);
/**
* Resolve this handle to the actual AST node by fetching the source file from a project
* and looking up the node by index. If no project is passed, the project that produced
* the handle is used.
*/
resolve(project?: Project): Promise<Node | undefined>;
}
/** A symbol definition paired with all of its reference nodes. */
export interface ReferencedSymbolEntry {
/** The node handle for the symbol's definition. */
definition: NodeHandle;
/** The resolved symbol for the definition, if available. */
symbol?: Symbol | undefined;
/** The node handles for each reference to the symbol. */
references: NodeHandle[];
}
/** A single usage of a signature, pairing the reference name with its call expression (if any). */
export interface SignatureUsage {
/** The node handle for the name reference. */
name: NodeHandle;
/** The node handle for the call expression, if the reference is invoked. */
call?: NodeHandle | undefined;
}
export declare class Symbol {
private objectRegistry;
/**
* The project this symbol was first observed in, used as the default project for
* lookups that need a project context (members/exports/parent). Symbols are shared
* snapshot-wide, so these lookups can otherwise be ambiguous about which project to use.
*/
private readonly canonicalProject;
readonly id: number;
/** The escaped (`__String`) name, used as the key in member/export tables. */
readonly escapedName: __String;
/** The display name (escaped underscores removed). */
readonly name: string;
readonly flags: SymbolFlags;
readonly checkFlags: number;
readonly declarations: readonly NodeHandle[];
readonly valueDeclaration: NodeHandle | undefined;
private readonly parent;
private readonly exportSymbol;
private membersCache;
private exportsCache;
constructor(data: SymbolResponse, objectRegistry: SnapshotObjectRegistry);
getParent(): Promise<Symbol | undefined>;
/**
* Get this symbol's members keyed by escaped name. The result is cached on
* the symbol, so repeated calls do not round-trip to the server.
*/
getMembers(): Promise<ReadonlyMap<__String, Symbol>>;
/**
* Get this symbol's exports keyed by escaped name. The result is cached on
* the symbol, so repeated calls do not round-trip to the server.
*/
getExports(): Promise<ReadonlyMap<__String, Symbol>>;
private fetchSymbolTable;
getExportSymbol(): Promise<Symbol>;
getJsDocTags(checker: Checker): Promise<readonly JSDocTagInfo[]>;
getDocumentationComment(checker: Checker): Promise<string>;
}
declare class TypeObject implements Type {
private objectRegistry;
readonly id: number;
readonly flags: TypeFlags;
readonly objectFlags: ObjectFlags;
readonly symbol: number;
readonly value: string | number | boolean | bigint;
readonly intrinsicName: string;
readonly isThisType: boolean;
readonly freshType: number;
readonly regularType: number;
readonly target: number;
readonly typeParameters: readonly number[];
readonly outerTypeParameters: readonly number[];
readonly localTypeParameters: readonly number[];
readonly aliasTypeArguments: readonly number[];
readonly aliasSymbol: number;
readonly elementFlags: readonly ElementFlags[];
readonly fixedLength: number;
readonly readonly: boolean;
readonly texts: readonly string[];
readonly objectType: number;
readonly indexType: number;
readonly checkType: number;
readonly extendsType: number;
readonly baseType: number;
readonly substConstraint: number;
private trueType;
private falseType;
constructor(data: TypeResponse, objectRegistry: ProjectObjectRegistry);
getSymbol(): Promise<Symbol | undefined>;
getAliasSymbol(): Promise<Symbol | undefined>;
getTarget(): Promise<Type>;
getFreshType(): Promise<FreshableType | undefined>;
getRegularType(): Promise<FreshableType | undefined>;
getTypes(): Promise<readonly Type[] | undefined>;
getTypeParameters(): Promise<readonly TypeParameter[]>;
getOuterTypeParameters(): Promise<readonly TypeParameter[]>;
getLocalTypeParameters(): Promise<readonly TypeParameter[]>;
getAliasTypeArguments(): Promise<readonly Type[]>;
getObjectType(): Promise<Type>;
getIndexType(): Promise<Type>;
getCheckType(): Promise<Type>;
getExtendsType(): Promise<Type>;
getBaseType(): Promise<Type>;
getConstraint(): Promise<Type>;
getTrueType(): Promise<Type>;
getFalseType(): Promise<Type>;
/**
* Get the base types of this type. Returns `undefined` for any type that is
* not a class or interface.
*/
getBaseTypes(): Promise<readonly Type[] | undefined>;
isClassOrInterface(): this is InterfaceType;
isUnionType(): this is UnionType;
isIntersectionType(): this is IntersectionType;
isObjectType(): this is ObjectType;
isIntrinsicType(): this is IntrinsicType;
isErrorType(): boolean;
isLiteralType(): this is LiteralType;
isStringLiteralType(): this is StringLiteralType;
isNumberLiteralType(): this is NumberLiteralType;
isBigIntLiteralType(): this is BigIntLiteralType;
isBooleanLiteralType(): this is BooleanLiteralType;
isTypeReference(): this is TypeReference;
isTupleType(): this is TupleType;
isIndexType(): this is IndexType;
isIndexedAccessType(): this is IndexedAccessType;
isConditionalType(): this is ConditionalType;
isSubstitutionType(): this is SubstitutionType;
isTemplateLiteralType(): this is TemplateLiteralType;
isStringMappingType(): this is StringMappingType;
isTypeParameter(): this is TypeParameter;
}
export declare function isUnionType(type: Type): type is UnionType;
export declare function isIntersectionType(type: Type): type is IntersectionType;
export declare function isObjectType(type: Type): type is ObjectType;
export declare function isClassOrInterfaceType(type: Type): type is InterfaceType;
export declare function isIntrinsicType(type: Type): type is IntrinsicType;
/**
* Whether this is the error type — the placeholder the checker produces when a
* type cannot be determined (e.g. an unresolved reference). It is an intrinsic
* type named `"error"` (this covers both the singleton error type and the
* per-alias error types manufactured for unresolved type alias references).
*/
export declare function isErrorType(type: Type): boolean;
export declare function isLiteralType(type: Type): type is LiteralType;
export declare function isStringLiteralType(type: Type): type is StringLiteralType;
export declare function isNumberLiteralType(type: Type): type is NumberLiteralType;
export declare function isBigIntLiteralType(type: Type): type is BigIntLiteralType;
export declare function isBooleanLiteralType(type: Type): type is BooleanLiteralType;
export declare function isTypeReference(type: Type): type is TypeReference;
export declare function isTupleType(type: Type): type is TupleType;
export declare function isIndexType(type: Type): type is IndexType;
export declare function isIndexedAccessType(type: Type): type is IndexedAccessType;
export declare function isConditionalType(type: Type): type is ConditionalType;
export declare function isSubstitutionType(type: Type): type is SubstitutionType;
export declare function isTemplateLiteralType(type: Type): type is TemplateLiteralType;
export declare function isStringMappingType(type: Type): type is StringMappingType;
export declare function isTypeParameter(type: Type): type is TypeParameter;
export declare class Signature {
private flags;
private objectRegistry;
readonly id: number;
readonly declaration?: NodeHandle | undefined;
readonly typeParameters?: readonly number[] | undefined;
readonly parameters: readonly number[];
readonly thisParameter?: number | undefined;
readonly target?: number | undefined;
constructor(data: SignatureResponse, project: Project, objectRegistry: ProjectObjectRegistry);
getTypeParameters(): Promise<readonly TypeParameter[]>;
getParameters(): Promise<readonly Symbol[]>;
getThisParameter(): Promise<Symbol | undefined>;
getTarget(): Promise<Signature | undefined>;
get hasRestParameter(): boolean;
get isConstruct(): boolean;
get isAbstract(): boolean;
}
//# sourceMappingURL=api.d.ts.map