Highcharts Flags are not visible in some cases

Question

I found a bug in highcharts where a group of Flags are placed on one spot. (http://jsfiddle.net/BlackLabel/246d13up/2). The bug already got reported on the Highchart Gitlab. A developer posted a workaround. He overrided the "H.seriesTypes.flags.prototype._drawPoints()" function.

I located the function in the documentation, but i didn't find a way to override it in typescript.

My attempts to override it didn't bring me to the solution.

series: Highcharts.Series = {
    drawPoints: function () {

    }
  };


  points: Highcharts.Point = {
    series: {
      drawPoints: function () {
        return;
      }
    }
  }