/**
 * @author Thomas Barnekow
 * @license MIT
 */
import { IterableValueTransform } from '@tsdotnet/linq/dist/IterableTransform.js';
import { XElement, XName, XNode } from '../internal.js';
/**
 * Returns a function that, for the elements of the source sequence passed to
 * that function, returns the concatenated sequences of ancestors of such
 * elements in reverse document order.
 *
 * If a name is provided, the resulting sequence contains only those ancestors
 * having a matching name.
 *
 * @typeParam T The type of the elements contained in the source sequence.
 * @param name The optional name used to filter the sequence of ancestors.
 * @returns A function that will return a flat sequence of ancestors in reverse
 * document order.
 */
export declare function ancestors<T extends XNode>(name?: XName | null): IterableValueTransform<T, XElement>;
/**
 * Returns a function that, for the elements of the source sequence passed to
 * that function, returns the concatenated sequences of ancestors of such
 * elements, including the elements themselves, in reverse document order.
 *
 * If a name is provided, the resulting sequence contains only those elements
 * and ancestors having a matching name.
 *
 * @param name The optional name used to filter the sequence of ancestors and
 * elements.
 * @returns A function that will return a flat sequence of ancestors, including
 * the elements, in reverse document order.
 */
export declare function ancestorsAndSelf(name?: XName | null): IterableValueTransform<XElement, XElement>;