import { DoCheck, EventEmitter, OnChanges } from '@angular/core';
import { AfterContentInit } from '@angular/core';
export declare class Stepper implements AfterContentInit, DoCheck, OnChanges {
    type: string;
    direction: string;
    steps: any;
    stepsChange: EventEmitter<{}>;
    last_change: any;
    private stepList;
    ngOnChanges(changes: any): void;
    ngDoCheck(): void;
    updateStates(): void;
    ngAfterContentInit(): void;
    initElements(): void;
    open(index: number): void;
    close(index: number): void;
}