import { CartesianAxes, PolarAxes } from '../index.js';
import { Chart } from './chart.js';
export declare class ChartProgress extends Chart {
    private previousData;
    plotterCartesian(axis: CartesianAxes, dataKeys: any): void;
    plotterPolar(axis: PolarAxes, dataKeys: any): void;
    drawLegendSymbol(legendId?: string, asSvgElement?: boolean): SVGRectElement | SVGSVGElement;
}