import { ChartOptions } from "chart.js";
import { ChartDot } from "../../chart/model/ChartDot";
export declare class Helpers {
    private static rgbColorStringRegex;
    static getBarChartNextDate(chartDots: ChartDot[], isMonthlyChart: boolean): Date;
    static getPreviousDate(chartDots: ChartDot[], isMonthlyChart: boolean): Date;
    static disableChartAnimations(chartOptions: ChartOptions): ChartOptions;
    static filterList(list: Array<any>, searchValue: String, entriesLeftToFind: number, mappingFunction?: (T: any) => string): any[];
    static addOpacityToRgbColor(color: string, number: number): string;
    static copyToClipboard(val: string): void;
}