import { default as React } from 'react';
import { SidebarDrilldownPanelProps } from '../../types';
/**
 * Second-level sidebar region: back control, optional breadcrumb, and submenu rows.
 * Presentation-only: routing and `href` handling belong to the host via `onActivateSubmenu`.
 *
 * @example
 * ```tsx
 * <SidebarDrilldownPanel
 *   expanded
 *   breadcrumbRootLabel="Campaigns"
 *   parentItem={{ title: "Tools", submenus: [{ title: "Map", href: "#/map" }] }}
 *   onBack={() => {}}
 *   isSubmenuActive={(s) => s.href === "#/map"}
 *   onActivateSubmenu={(s) => navigate(s.href)}
 * />
 * ```
 */
export declare const SidebarDrilldownPanel: React.FC<SidebarDrilldownPanelProps>;
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