//DO NOT FORGET TO INSTALL nuget - JTracking
public static IHtmlString JTrackingInclude(this HtmlHelper html)
{
    //INSERT WEBSITE NAME HERE
    var src = "//PATH-TO-JTRACKING/js/v2/XXX-XXX-XXX.min.js";

#if DEBUG
    src = "//PATH-TO-JTRACKING/js/v2/XXX-XXX-XXX.js";
#endif
    using (HtmlTextWriter writer = new HtmlTextWriter(html.ViewContext.Writer, string.Empty))
        jTracking.Html.Include(writer, src);

    return null;
}