import { PipeTransform } from '@angular/core';
import { FormStepGroup } from './form-step-group.model';
import { FormStep } from './form-step.model';
/**
 * Pipe to determine if a FormStep is a FormStepGroup or a single step.
 */
export declare class FormStepGroupPipe implements PipeTransform {
    transform(step: FormStep | FormStepGroup): boolean;
}