code: function handleMouseMove(e) {
              let { mousePos, closestPoint } = getPointProps(e);
              let pointData = getPointData(closestPoint);
  
              if (hasCrossHairs) {
                  drawDataPointsValueHighlights(pointData);
              }
  
              highlightDataPoint(pointData);
  
              dispatcher.call('customMouseMove', e, pointData, d3Selection.mouse(e), [chartWidth, chartHeight]);
          }
docs: Handler called on mousemove event
  @return {void}
  @private