import { ComboboxOptions } from './combobox.types';
/**
 * Headless combobox / multiselect. Filters a static option list, supports single
 * or multiple selection, full keyboard navigation and ARIA wiring.
 *
 * Markup:
 * ```html
 * <div data-c42-combobox>
 *   <input data-c42-combobox-input />
 *   <ul data-c42-combobox-list>
 *     <li data-c42-combobox-option data-value="a">Apple</li>
 *   </ul>
 * </div>
 * ```
 */
export declare class Combobox {
    private readonly root;
    private readonly input;
    private readonly list;
    private readonly multiple;
    private readonly filterEnabled;
    private readonly options;
    private readonly selected;
    private open;
    private activeIndex;
    private cleanups;
    constructor(root: HTMLElement, options?: ComboboxOptions);
    private valueOf;
    private init;
    private get visibleOptions();
    private onInput;
    private filter;
    private onListClick;
    private onKeydown;
    private updateActive;
    private toggleOption;
    private syncSingleInputLabel;
    openList(): void;
    closeList(): void;
    private onOutside;
    private emit;
    get values(): string[];
    get isOpen(): boolean;
    on<E extends Event = Event>(event: string, handler: (event: E) => void): () => void;
    destroy(): void;
}