export type MenuItem = MenuItemLink | MenuItemSubMenu | MenuItemTitle;
export interface MenuItemBase {
    disabled?: boolean;
    href?: string;
    items?: (MenuItemLink | MenuItemTitle)[];
    label: string;
    symbol?: string;
    title?: string;
}
export interface MenuItemLink extends MenuItemBase {
    href: string;
}
export interface MenuItemSubMenu extends MenuItemBase {
    items: (MenuItemLink | MenuItemTitle)[];
}
export type MenuItemTitle = MenuItemBase;
export declare const contributeMenuItem: MenuItemSubMenu;
export declare const explorersMenuItem: MenuItemSubMenu;
export declare function updateMenuItem(menuItem: MenuItem, symbol: string, update: Partial<MenuItem>): MenuItem;