import { QueryList, AfterContentChecked, ElementRef, Renderer2 } from '@angular/core';
import { StepComponent } from './step/step.component';
export declare class StepperComponent implements AfterContentChecked {
    private _renderer;
    lastStepActive: boolean;
    stepCount: number;
    position: number;
    private _activeStep;
    private _stepBodyWrapperHeight;
    steps: QueryList<StepComponent>;
    _stepBodyWrapper: ElementRef;
    activeStep: number;
    constructor(_renderer: Renderer2);
    next(nextStep?: number): void;
    prev(nextStep?: number): void;
    onTransitionDone(): void;
    onTransitionStart(height: number): void;
    ngAfterContentChecked(): void;
}