import { type ComponentRef } from '@angular/core';
import type { iWtsTourItem, WtsTourOptions } from './type';
import { WtsTourComponent } from './wts-tour.component';
import * as i0 from "@angular/core";
export declare class WtsTourService {
    steps: import("@angular/core").WritableSignal<any[]>;
    config: import("@angular/core").WritableSignal<WtsTourOptions>;
    private document;
    private appRef;
    private injector;
    component: ComponentRef<WtsTourComponent>;
    private events;
    setSteps(options: WtsTourOptions, steps: Array<iWtsTourItem>): Promise<void>;
    addStep(step: iWtsTourItem): void;
    on(type: 'start' | 'skip' | 'finish' | 'next' | 'previous', callback: Function): void;
    start(): void;
    private trigger;
    private close;
    skip(): void;
    next(): void;
    previous(): void;
    finish(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<WtsTourService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<WtsTourService>;
}