convert path to polyline nodejs

is there a way to get an output to a file that gets the point at length of a path and converts it to polyline.

 var numPoints = 900;

    var mypath = document.getElementById("mypath");
   var pathLength = mypath.getTotalLength();
  var polygonPoints = [];

  for (var i = 0; i <= numPoints; i++) {
 var p = mypath.getPointAtLength(i * pathLength / numPoints);
 polygonPoints.push(p.x);
 polygonPoints.push(p.y);
 }

 var mypolygon = document.getElementById("mypolygon");
mypolygon.setAttribute("points", polygonPoints.join(","));

via simeone