import { Subject } from 'rxjs/Subject';
import { TourComponent } from './intro-tour/tour.component';
import { HintOptions } from './options';
export interface Step {
    selector: string;
    order: number;
}
export declare class HintService {
    currentStep: Step;
    steps: Step[];
    hintOptions: HintOptions;
    anchors: {
        [selector: string]: TourComponent;
    };
    overlay$: Subject<boolean>;
    registration$: Subject<boolean>;
    finish$: Subject<boolean>;
    showingStep$: Subject<Step>;
    initialize(options?: HintOptions): void;
    show(step: Step): void;
    showNext(): void;
    overlayNext(): void;
    showPrev(): void;
    register(selector: string, component: TourComponent): void;
    hasNext(): boolean;
    hasPrev(): boolean;
    end(): void;
    startAt(stepId: number): void;
    private initSteps(nodes);
    private putOverlay();
}