import { LitElement } from 'lit';
/**
 * Navigation item interface for sidenav
 */
export interface NavItem {
    label: string;
    href?: string;
    current?: boolean;
    subnav?: NavItem[];
}
/**
 * USA Documentation Template
 *
 * Documentation/content page template with side navigation.
 * Ideal for help pages, guides, and structured content.
 *
 * **Template Structure (from USWDS):**
 * - Skip navigation + Banner + Header
 * - Side navigation (responsive)
 * - Main content area with prose styling
 * - Footer + Identifier
 *
 * @element usa-documentation-template
 *
 * @slot sidenav - Custom side navigation
 * @slot breadcrumb - Breadcrumb navigation
 * @slot content - Main documentation content
 * @slot header - Site header
 * @slot footer - Site footer
 *
 * @fires {CustomEvent} template-ready - Fired when template initializes
 *
 * @example Basic usage with content
 * ```html
 * <usa-documentation-template>
 *   <nav slot="sidenav">
 *     <usa-sidenav></usa-sidenav>
 *   </nav>
 *   <article slot="content">
 *     <h1>Documentation Title</h1>
 *     <p>Content goes here...</p>
 *   </article>
 * </usa-documentation-template>
 * ```
 *
 * @example With navigation items property
 * ```html
 * <usa-documentation-template
 *   .navItems="${[
 *     { label: 'Overview', href: '#overview', current: true },
 *     { label: 'Getting Started', href: '#getting-started' }
 *   ]}"
 * >
 *   <article slot="content">...</article>
 * </usa-documentation-template>
 * ```
 *
 * @uswds-template https://designsystem.digital.gov/templates/documentation-page/
 */
export declare class USADocumentationTemplate extends LitElement {
    protected createRenderRoot(): this;
    /**
     * Page language attribute
     */
    lang: string;
    /**
     * Whether to show the government banner
     */
    showBanner: boolean;
    /**
     * Whether to show the identifier at the bottom
     */
    showIdentifier: boolean;
    /**
     * Side navigation position
     */
    sidenavPosition: 'left' | 'right';
    /**
     * Content column width
     */
    contentWidth: 'narrow' | 'wide';
    /**
     * Side navigation items (JSON array)
     */
    navItems: NavItem[];
    /**
     * Side navigation aria label
     */
    sidenavLabel: string;
    connectedCallback(): void;
    firstUpdated(changedProperties: Map<string, any>): void;
    /**
     * Check if a slot has content
     */
    private hasSlotContent;
    /**
     * Render a single navigation item
     */
    private renderNavItem;
    /**
     * Render side navigation
     */
    private renderSidenav;
    /**
     * Get sidenav column classes
     */
    private getSidenavClasses;
    /**
     * Get content column classes
     */
    private getContentClasses;
    render(): import('lit-html').TemplateResult<1>;
    /**
     * Public API: Set navigation items
     */
    setNavItems(items: NavItem[]): void;
    /**
     * Public API: Add a navigation item
     */
    addNavItem(item: NavItem): void;
    /**
     * Public API: Set current page in navigation
     */
    setCurrentPage(href: string): void;
}
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