makesvg.js

var jsroot = require("jsroot");
var fs = require("fs");

console.log('JSROOT version', jsroot.version);

//Use embed into SVG images for drawing
//Required "npm install canvas" package
//
//jsroot.ImageSVG = true;

jsroot.OpenFile("https://root.cern/js/files/hsimple.root", function(file) {
   file.ReadObject("hpx;1", function(obj) {
      jsroot.MakeSVG( { object: obj, option: "lego2,pal50", width: 1200, height: 800 }, function(svg) {
         console.log('SVG size', svg.length);
         fs.writeFileSync("lego2.svg", svg);
      });
   });
});