import { OnInit, OnDestroy, ChangeDetectorRef } from '@angular/core';
import { Question, Option } from '../../../../classes';
import { FormGroup, FormControl } from '@angular/forms';
export declare class QuestionConditionsComponent implements OnInit, OnDestroy {
    private cdRef;
    question: Question;
    questionFormGroup: FormGroup;
    readonly parentQuestion: Question;
    readonly preCheckedOptions: Option[];
    readonly validOptions: Option[];
    preCheckedOptionLengthControl: FormControl;
    private subscriptions;
    constructor(cdRef: ChangeDetectorRef);
    ngOnInit(): void;
    ngOnDestroy(): void;
    isChecked(optionId: string): boolean;
    toggle(optionId: string): void;
    TrackByFn(item: any): any;
}