export declare class CustomLinerChartService {
    /**
     * custom: override SVG to have the dots display all the time over the liner chart
     * since it's not supported anymore from ngx chart
     */
    showDots(chart: any): void;
    /**
     * create marker
     *
     */
    createMarker(chart: any, color: any, index: any): void;
    /**
     * set multiple attributes
     */
    setAttributes(element: any, attributes: any): void;
}