import { OnInit } from '@angular/core';
import { Survey } from '../../classes';
import { Subscription } from 'rxjs';
import { SurveyService, RepliesService } from '../../services';
import { LoadingService } from '@schoolbelle/common/loading';
import { ChartsService } from './charts.service';
export declare class ChartsComponent implements OnInit {
    repliesService: RepliesService;
    private surveyService;
    private charts;
    private loading;
    survey: Survey;
    subscription: Subscription;
    constructor(repliesService: RepliesService, surveyService: SurveyService, charts: ChartsService, loading: LoadingService);
    ngOnInit(): void;
    ngOnDestroy(): void;
    downloadCharts(): void;
    downloadExcel(): void;
    trackByIdFn(index: number, val: any): any;
}