import { IconName } from '../nv-icon/nv-icons';
/**
 * A navigation item in the sidebar. Can be a simple link or a collapsible parent with sub-items.
 * @slot default - The link or content of the item (usually an <a> tag).
 * @slot subitems - Sub-navigation items (nv-sidebarnavsubitem elements). Automatically assigned.
 * @slot trailing - Optional content displayed at the end of the item (e.g., badges, icons, chevron).
 */
export declare class NvSidebarnavitem {
    el: HTMLNvSidebarnavitemElement;
    /****************************************************************************/
    /**
     * Optional icon to display before the label.
     * @icon
     */
    readonly icon?: `${IconName}`;
    /**
     * Whether this item represents the active/current page.
     * Can be set automatically when a sub-item becomes active.
     */
    active: boolean;
    /**
     * Whether this item can be collapsed/expanded (has sub-items).
     */
    readonly collapsible: boolean;
    /**
     * Whether the collapsible item is currently open (showing sub-items).
     */
    open: boolean;
    /**
     * Number of notifications to display. When provided, a notification bullet will be automatically rendered.
     * The bullet will be positioned in the trailing slot when sidebar is open, and on the icon when collapsed.
     */
    readonly notificationCount?: number;
    /****************************************************************************/
    private hasSubitems;
    private isSidebarCollapsed;
    private mutationObserver?;
    private subitemsMutationObserver?;
    private wasActiveFromSubitem;
    /****************************************************************************/
    private handleToggle;
    private subitemsRef?;
    private isAnimating;
    private hasInitializedHeight;
    /** Tracks the last open state that was animated to, to prevent redundant animations */
    private lastAnimatedOpenState;
    private updateSubitemsHeight;
    private checkSidebarCollapsed;
    /**
     * Checks if any sub-item is active and updates parent active state.
     * - When sidebar is collapsed: if a sub-item is active, parent should be active
     * - When sidebar is expanded: if a sub-item is active AND parent is not open, parent should be active
     *   (because sub-items are hidden, we need to indicate the parent contains an active child)
     */
    private updateActiveFromSubitems;
    /****************************************************************************/
    componentWillLoad(): void;
    disconnectedCallback(): void;
    /****************************************************************************/
    onOpenChanged(newValue: boolean, oldValue: boolean): void;
    /****************************************************************************/
    render(): any;
}