/**
 * A component that shows a vertical list of items as they fit. When they don't all fit, it puts the ones that don't fit into a dropdown menu.
 * @slot() - The items to show in the menu.
 */
export declare class DnnVerticalOverflowMenu {
    element: HTMLDnnVerticalOverflowMenuElement;
    showDropdownButton: boolean;
    showDropdownMenu: boolean;
    private menu;
    private dropdown;
    private resizeObserver;
    private button;
    private previousMenuWidth;
    componentDidRender(): void;
    private moveItemsToDropDownIfNecessery;
    private moveItemsToMenuIfPossible;
    private getFullWidth;
    private toggleOverflowMenu;
    render(): any;
}