import { OnInit } from '@angular/core';
import { ChartOptions, ChartType, ChartDataSets } from 'chart.js';
import { Label } from 'ng2-charts';
import * as pluginDataLabels from 'chartjs-plugin-datalabels';
export declare class BarChartComponent implements OnInit {
    data: any;
    questionNumber: any;
    chartRootElement: any;
    chartCanvas: any;
    barChartOptions: ChartOptions;
    barChartLabels: Label[];
    barChartType: ChartType;
    barChartLegend: boolean;
    chartColors: Array<any>;
    barChartData: ChartDataSets[];
    barChartPlugins: (typeof pluginDataLabels)[];
    constructor();
    ngOnInit(): void;
}