import * as ts from 'typescript';
import { MemberDeclaration, ParameterDeclaration, TypeParameterDeclaration } from './named_declarations';
import { Node } from './node';
import { SourceFile } from './source_file';
import { KeywordType, LiteralType, Type } from './types';
/**
 * The conversion helpers may return undefined when the input TS node doesn't contain useful
 * information. This function is used to filter undefined out of arrays before serializing the
 * converted AST to JSON.
 */
export declare function filterUndefined(node: Node): boolean;
/**
 * Helper function that converts Names into strings.
 */
export declare function convertName(node: ts.DeclarationName | ts.EntityName | ts.BindingName | ts.QualifiedName): string;
/**
 * Helper function that converts Expressions into strings.
 */
export declare function convertExpression(node: ts.Expression): string;
/**
 * Takes in a ts.SourceFile and returns a new SourceFile object that is compatible with Dart and can
 * be serialized to JSON.
 */
export declare function convertAST(node: ts.SourceFile): SourceFile;
export declare function convertNode(node: ts.Node): Node | undefined;
export declare function convertTypeParameter(typeParam: ts.TypeParameterDeclaration): TypeParameterDeclaration;
export declare function convertTypeNode(node: ts.TypeNode): Type;
export declare function convertKeywordTypeNode(node: ts.KeywordTypeNode): KeywordType;
export declare function convertLiteralTypeNode(node: ts.LiteralTypeNode): LiteralType;
export declare function convertMember(member: ts.ClassElement | ts.TypeElement): MemberDeclaration;
export declare function convertParameter(parameter: ts.ParameterDeclaration): ParameterDeclaration;