import { Node, Root, Parent, Element, Text } from "hast";
import { NormalizedOptions } from "./options";
import { Heading } from "./types";
/**
 * Determines whether the given node is a Root node.
 */
export declare function isRoot(node: Node): node is Root;
/**
 * Determines whether the given node is an HTML Parent element.
 */
export declare function isParent(node: Node): node is Parent;
/**
 * Determines whether the given node is an HTML Element.
 */
export declare function isElement(node: Node): node is Element;
/**
 * Determines whether the given node is an HTML heading node, according to the specified options
 */
export declare function isHeading(node: Node, options: NormalizedOptions): node is Heading;
/**
 * Determines whether the given node is an HTML Text node.
 */
export declare function isText(node: Node): node is Text;