import { StepperOptions } from './stepper.types';
/**
 * Headless stepper / wizard. Tracks an ordered set of steps and exposes
 * completed/current/upcoming state via `data-state`, with linear or free
 * navigation. Replaces the old Alpine status-indicator state machine.
 *
 * Markup:
 * ```html
 * <div data-c42-stepper>
 *   <div data-c42-stepper-step data-value="account">
 *     <span data-c42-stepper-indicator></span>
 *     <button data-c42-stepper-trigger>Account</button>
 *     <div data-c42-stepper-panel>...</div>
 *   </div>
 * </div>
 * ```
 */
export declare class Stepper {
    private readonly root;
    private readonly linear;
    private steps;
    private currentIndex;
    private readonly completed;
    private cleanups;
    constructor(root: HTMLElement, options?: StepperOptions);
    private init;
    private resolveIndex;
    private isReachable;
    private stateOf;
    private render;
    private emit;
    goTo(target: string | number): void;
    next(): void;
    prev(): void;
    get value(): string;
    get index(): number;
    on<E extends Event = Event>(event: string, handler: (event: E) => void): () => void;
    destroy(): void;
}