/**
 * Attempts to find a sizing container based on the provided HTMLElement. By default, the sizing
 * element will just be the provided element unless:
 * - the item has a known role within react-md that can target known classes
 * - the item has a `data-sizing-selector` attribute that is a valid query selector for the nested
 * item.
 *
 * NOTE: The `data-sizing-selector` will be run from the current element instead of the `document`.
 *
 * @param el The element to find a sizing container for.
 * @return the sizing container relative to the provided element, or `null` if none
 * could be found.
 * @throws This error will be thrown if using the `data-query-selector` and the query
 * selector does not return an element on the page.
 */
export default function findSizingContainer(el: HTMLElement | null): HTMLElement | null;