/**
 * @license
 * Copyright 2026 Kai-Orion & Sandlada
 * SPDX-License-Identifier: MIT
 *
 * @fileoverview
 * Shared container logic for navigation components. The container propagates
 * `navigation-scope` to slotted tabs and exposes imperative scope-level APIs.
 *
 * @example
 * ```ts
 * @customElement('mdc-navigation-bar')
 * export class NavigationBar extends BaseNavigationContainer {}
 *
 * const bar = document.querySelector('mdc-navigation-bar')
 * bar?.setActive('/home')
 * ```
 */
import { LitElement, type PropertyValues, type TemplateResult } from 'lit';
import { type NavigationEventTrigger } from '../../../utils/navigation/navigation-state-store';
export declare abstract class BaseNavigationContainer extends LitElement {
    navigationScope: string;
    private readonly slotElement;
    /** Current active navigation value in this container scope. */
    get activeValue(): string | null;
    /**
     * Imperatively activates a value in this container scope.
     * Tabs in other containers with the same scope and value will sync.
     */
    setActive(value: string, trigger?: NavigationEventTrigger): void;
    protected firstUpdated(): void;
    protected updated(changedProperties: PropertyValues<this>): void;
    protected render(): TemplateResult;
    protected renderSlot(): TemplateResult<1>;
    private readonly handleSlotChange;
    private syncTabsScope;
    private get tabs();
    private normalizeScope;
}
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