import type { UIElement } from '@instructure/shared-types';
/**
 * ---
 * category: utilities/DOM
 * ---
 *
 * Returns the underlying DOM node. It looks the following places:
 * - If it's a native HTML element e.g. `HtmlSpanElement` its returned as is.
 * - If the element has a non-nullish `ref` prop or instance variable which is a
 *   `HTMLElement` its returned. If it`s something else then `findDOMNode` is called
 *   on the object. (it also checks `ref.current`)
 * - If the element has a `ref` prop or instance variable whose value is `null`,
 *   `undefined` is returned.
 * - If the element does not have a `ref` prop or instance variable `undefined`
 *   is returned with a warning
 * @module findDOMNode
 *
 * @param el - component, DOM node, or function returning a DOM node
 * @returns The native DOM node of this element or `undefined`
 */
declare function findDOMNode(el?: UIElement): Element | Node | Window | undefined;
export default findDOMNode;
export { findDOMNode };
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