interface IOption {
    scrollWidth: number;
    scrollTrackWidth: number;
    scrollTrackHeight: number;
    background: string;
    thumbColor: string;
    borderRadius: number;
    maxRatio: number;
    minRatio: number;
    maxShowRatio: number;
    scrollFn: Function | null;
}
export default class scrollHelper {
    private chart;
    private dom;
    private scrollBarDom;
    private option;
    private scrollBarThumb;
    constructor(chart: any, scrollBarDom: HTMLElement, option: IOption);
    init(): void;
    update(): void;
    singleShow(): void;
    scrollShow(domWidth: any, scrollWidth: any): void;
}
export {};