import { EventEmitter } from '@angular/core';
import { OptionsInterface } from '../options.interface';
export declare class NmCascadeMenuComponent {
    menuVisible: boolean;
    steps: Array<Array<OptionsInterface>>;
    selectChange: EventEmitter<{
        step: number;
        index: number;
    }>;
    constructor();
    selectHandle(event: Event, step: number, index: number): void;
    clickHandle(event: Event): void;
}