import * as React from 'react';
import { ILineChartDataPoint } from '../../types/IDataPoint';
import { ISparklineProps } from '../../index';
export interface ISparklineState {
    _points: ILineChartDataPoint[] | null;
    _width: number;
    _height: number;
    _valueTextWidth: number;
}
export declare class SparklineBase extends React.Component<ISparklineProps, ISparklineState> {
    private margin;
    private x;
    private y;
    private area;
    private line;
    private _emptyChartId;
    private _isRTL;
    constructor(props: ISparklineProps);
    componentDidMount(): void;
    drawSparkline(): JSX.Element;
    render(): JSX.Element;
    private _isChartEmpty;
}
