import { Signal } from '@angular/core';
import { ITutorialStep } from '../lib.interfaces';
export type Transition = 'start' | 'end' | null;
export declare class Tutorial {
    private readonly _stepIndex;
    private readonly _transitioning;
    readonly stepIndex: Signal<number>;
    readonly transitioning: Signal<Transition>;
    readonly step: Signal<ITutorialStep | undefined>;
    readonly hasPrevious: Signal<boolean>;
    readonly steps: ITutorialStep[];
    constructor(steps: ITutorialStep[]);
    reset(): void;
    setStepIndex(index: number): void;
    nextStep(): Promise<void>;
    private shouldSkip;
    private startHook;
    private endHook;
    previousStep(): void;
}