How to make mCustomScrollbar horizontal in infinite continue loop

Question

function AutoScrollOn(to, timer) {
    if (!timer) {
      timer = autoScrollTimer;
    }
    content.addClass("auto-scrolling-on").mCustomScrollbar("scrollTo", to, {
      scrollInertia: timer,
      scrollEasing: "linear",
    });
    autoScroll = setTimeout(function () {
      if (content.hasClass("auto-scrolling-to-left")) {
        content.mCustomScrollbar("stop");
        AutoScrollOn("right");
        content
          .removeClass("auto-scrolling-to-left")
          .addClass("auto-scrolling-to-right");
      } else {
        content.mCustomScrollbar("stop");
        AutoScrollOn("left", -1);
        content
          .removeClass("auto-scrolling-to-right")
          .addClass("auto-scrolling-to-left");
      }
    }, timer);
  }

i have use mcustomscollbar, i want mcustomscrollbar to work continue infinite time from left to right, the code is working but left to right and again right to left in continue mode. but i want only left to right without stop