/**
 * Get the list of all scroll parents, up the list of ancestors until we get to the top window object.
 * @param element - element for which you want to get the list of all scroll parents
 * @param root - element which element considered a final scrollable parent target (optional, defaults to element.ownerDocument?.body)
 */
export declare function getListScrollParents(element: Element, root?: Element): Element[];
/**
 * Get the scroll parent of the specified element in the DOM tree.
 * @param node - element for which to get the scroll parent
 * @param root - element which element considered a final scrollable parent
 */
export declare function getScrollParent(node: Element, root: Element): Element | undefined;
/**
 * Get the scroll parent of the specified element in the DOM tree.
 * @param node - element for which to get the scroll parent
 */
export declare function getScrollParent(node: Element): Element;
/**
 * Check that element is scroll parent.
 * @param element - element for checking
 * */
export declare function isScrollable(element: Element): boolean;
/**
 * Get the element that is the viewport for the specified element.
 * @param node - element for which to get the viewport
 */
export declare function getViewportForEl(node: Element): Element | undefined;