export declare function getChartMouseLocation(chartSelector: any, event: any): {
    x: number;
    y: number;
};
export declare function xClosestDataPoint(p1: any, data: any): {
    i: any;
    d: any;
};
export declare function closestDataPoint(p1: any, data: any, isStack?: boolean): {
    i: any;
    d: any;
};