import React from 'react';
declare const NavigationBarVertical: React.FC<NavigationBarVerticalProps>;
interface Item {
    label: string;
    route: string;
}
interface DropdownColumn {
    items: Item[];
}
interface NavBarItem {
    label: string;
    route: string;
    dropdownColumns?: DropdownColumn[];
    onClick?: (e: React.SyntheticEvent, item: Item) => void;
}
interface NavigationBarVerticalProps {
    items: NavBarItem[];
    labelToOpen: string;
    labelToClose: string;
    iconToOpen: any;
    iconToClose: any;
    type: 'primary' | 'secondary';
    extraAction?: JSX.Element;
    ref?: any;
}
export { NavigationBarVertical };