export type Direction = "horizontal" | "vertical" | "either";
/**
 * Get practical parent element, with consideration for slots and shadow roots.
 *
 * @param element element
 * @returns The parent element (if any)
 */
export declare function getEffectiveParentElement(element: HTMLElement): HTMLElement | null;
/**
 * Get the first scrollable ancestor element.
 *
 * @param element element
 * @param direction scroll direction
 * @returns the first scrollable ancestor element (if any)
 */
export declare function getFirstScrollableAncestor(element: HTMLElement, direction: Direction): HTMLElement | null;
export declare function calcScrollIntoViewOffset(target: HTMLElement, container: HTMLElement, center: boolean): [x: number, y: number];
/**
 * An alternative `.scrollIntoView()` function which only scrolls the first scrollable ancestor element.
 *
 * @param target target element
 * @param direction direction
 * @returns `true` if success, `false` if scrollable parent not found
 */
export declare function scrollIntoViewOnlyParent(target: HTMLElement, direction: Direction, center: boolean): boolean;