/**
 * @author Thomas Barnekow
 * @license MIT
 */
import { LinqAttributes, LinqElements, Stringifyable, XAttribute, XContainer, XName, XNamespace } from './internal.js';
/**
 * Represents an XML element.
 */
export declare class XElement extends XContainer {
    /**
     * Gets an empty collection of elements.
     */
    static readonly emptySequence: Iterable<XElement>;
    /**
     * Initializes a new `XElement` instance with the specified name.
     *
     * @param name The name of the element.
     * @param contentArray Zero or more content items.
     */
    constructor(name: XName | string, ...contentArray: any[]);
    /**
     * Initializes a new instance of the `XElement` class from another `XElement` object.
     *
     * @param other Another element that will be copied to this element.
     */
    constructor(other: XElement);
    /**
     * Gets the first attribute of this element.
     */
    get firstAttribute(): XAttribute | null;
    /**
     * Gets a value indicating whether the element has at least one attribute.
     */
    get hasAttributes(): boolean;
    /**
     * Gets a value indicating whether the element has at least one child element.
     */
    get hasElements(): boolean;
    /**
     * Gets a value indicating whether the element contains no content.
     */
    get isEmpty(): boolean;
    /**
     * Gets the last attribute of this element.
     */
    get lastAttribute(): XAttribute | null;
    /**
     * Gets the name of this element.
     */
    get name(): XName;
    /**
     * Sets the name of this element.
     */
    set name(value: XName);
    /**
     * Gets the text contents of this element.
     *
     * If there is text content interspersed with nodes (mixed content) then the
     * text content will be concatenated and returned.
     */
    get value(): string;
    /**
     * Sets the text content of this element.
     */
    set value(content: string);
    /**
     * Returns this `XElement` and all of it's ancestors up to the root node.
     * Optionally, an `XName` can be passed in to target specific ancestors.
     *
     * @param name The optional `XName` of the target ancestor.
     * @returns An iterable containing this `XElement` and its ancestors (with
     *          a matching `XName` if `name` was provided).
     */
    ancestorsAndSelf(name?: XName | null): LinqElements;
    /**
     * Returns the `XAttribute` associated with this `XElement` that has the
     * given name.
     *
     * @param name The `XName` of the `XAttribute` to get.
     * @returns The `XAttribute` having the given `XName` or `null`.
     */
    attribute(name: XName): XAttribute | null;
    /**
     * Gets all attributes associated with this element or the attribute having
     * the given name.
     *
     * @param name The name of the attribute to return.
     * @returns All attributes associated with this element or the attribute
     *          having the given name.
     */
    attributes(name?: XName | null): LinqAttributes;
    /**
     * Gets this `XElement` and the descendant `XElement`s of this `XElement`.
     *
     * @param name The optional name of the descendants to return.
     * @returns This `XElement` and the descendant `XElement`s of this `XElement`.
     */
    descendantsAndSelf(name?: XName | null): LinqElements;
    /**
     * Returns the default `XNamespace` of this `XElement`.
     *
     * @returns The default `XNamespace` of this `XElement`.
     */
    getDefaultNamespace(): XNamespace;
    /**
     * Get the namespace associated with a particular prefix for this `XElement`
     * in its document context.
     *
     * @param prefix The namespace prefix to look up.
     * @returns The `XNamespace` for the namespace bound to the prefix.
     * @throws If the prefix is falsy, e.g., the empty string.
     */
    getNamespaceOfPrefix(prefix: string): XNamespace | null;
    /**
     * Get the prefix associated with a namespace for an element in its context.
     *
     * @param ns The `XNamespace` for which to get the prefix.
     * @returns The namespace prefix `string`.
     */
    getPrefixOfNamespace(ns: XNamespace): string | null;
    /**
     * Creates a new `XElement` instance from the given DOM `Element`.
     *
     * @param element The DOM `Element`.
     * @returns A new `XElement` instance.
     */
    static load(element: Element): XElement;
    /**
     * Creates a new `XElement` instance from the given XML string.
     *
     * @param text The XML string.
     * @returns A new `XElement` instance.
     * @throws An `ArgumentException` if the XML is malformed or does not contain
     *         a root element.
     */
    static parse(text: string): XElement;
    /**
     * Removes all nodes and attributes from this `XElement`.
     */
    removeAll(): void;
    /**
     * Removes all attributes from this `XElement`.
     */
    removeAttributes(): void;
    setAttributeValue(name: XName, value: Stringifyable | null): void;
    toString(): string;
}