TypeError: chunk.charAt is not a function

Created by: jonnermut

Seems that the scxml.documentStringToModel func is somehow broken?

This code in node (latest):

var scxml = require('scxml')

var xml = `<scxml 
    xmlns="http://www.w3.org/2005/07/scxml"
    version="1.0"
    profile="ecmascript"
    initial="draft">

    <state id="draft">
    </state>


</scxml>`

 scxml.documentStringToModel(xml, function(err, model) {
    if(err) {
        throw err;
    }
    console.log(model)
  })

gives the error:

bash-3.2$ node testInNode.js
/Volumes/TERA/Dropbox/code/scion-viz2/node_modules/sax/lib/sax.js:976
      result = chunk.charAt(i)
                     ^

TypeError: chunk.charAt is not a function
    at charAt (/Volumes/TERA/Dropbox/code/scion-viz2/node_modules/sax/lib/sax.js:976:22)
    at Object.write (/Volumes/TERA/Dropbox/code/scion-viz2/node_modules/sax/lib/sax.js:999:11)
    at transform (/Volumes/TERA/Dropbox/code/scion-viz2/node_modules/scxml/lib/compiler/scxml-to-scjson.js:296:12)
    at Object.documentStringToModel (/Volumes/TERA/Dropbox/code/scion-viz2/node_modules/scxml/lib/runtime/document-string-to-model.js:43:18)
    at Object.<anonymous> (/Volumes/TERA/Dropbox/code/scion-viz2/testInNode.js:15:8)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
bash-3.2$

It does the same thing in the browser. Using pathToModel seems to work ok.