AngularJs: How to use web worker with makepdf - angularjs

Question

There is a solution here that explains how to use web worker with makepdf. However, I want to know how to apply this solution to angular using requirejs.
I have tried to use ngwebworker along with requireJs, as the RequireJS within webworker, but I had no success. Can someone help me?
EDIT:
To make it easier to visualize the problem, I will put on this edit the code that it is not working:
$scope.exportToPDF = function(){
var list = $rootScope.orderedData;
var body = [];
var headers = new Array();
headers.push({ text: 'A', fillColor: '#0075E5', color: '#ffffff'});
headers.push({ text: 'B', fillColor:#0075E5', color: '#ffffff'});
headers.push({ text: 'C', fillColor:#0075E5', color: '#ffffff'});
headers.push({ text: 'D', fillColor:#0075E5', color: '#ffffff'});
headers.push({ text: 'E', fillColor:#0075E5', color: '#ffffff'});
headers.push({ text: 'F', fillColor:#0075E5', color: '#ffffff'});
body.push(headers);
for (var key in list)
{
if (list.hasOwnProperty(key)){
var position = list[key];
var fila = new Array();
fila.push( { text: position.a.toString(), fillColor: '#ffffff' } );
fila.push( { text: position.b.toString(), fillColor: '#ffffff'} );
fila.push( { text: position.c.toString(), fillColor: '#ffffff'} );
fila.push( { text: position.d.toString().substring(0,5) + "...", fillColor: '#ffffff'} );
fila.push( { text: position.e.toString(), fillColor: '#ffffff'} );
body.push(fila);
}
}
var dd = {
background: [{
width: 30,
alignment: 'left'
}],
pageOrientation: 'landscape',
footer: function(currentPage, pageCount) { return currentPage.toString() + '/' + pageCount;},
info: {
title: 'Title',
author: 'Me'
},
content: [
{ text: 'Text', style: 'header' },
{
style: 'tableHeader',
table:
{
dontBreakRows: true,
headerRows: 1,
widths: ['5%', '10%', '10%', 'auto', '15%', 'auto', 'auto', '10%', '10%', 'auto', '4%', '10%'],
body: body
}
}
],
styles: {
header: {
fontSize: 18,
bold: true,
margin: [0, 0, 0, 10],
alignment: 'center'
},
subheader: {
fontSize: 16,
bold: true,
margin: [0, 10, 0, 5]
},
tableExample: {
margin: [0, 5, 0, 15]
},
tableHeader: {
bold: true,
fontSize: 9,
color: 'black',
margin: [0, 5, 0, 15]
}
},
defaultStyle: {
},
};
var obj = pdfMake.createPdf(dd) // FAST PROCESS!
var myWorker = Webworker.create(downloadIt);
myWorker.run(obj).then(function(body) {
});
function downloadIt(obj) {
obj.download("Title.pdf"); // REALLY SLOW PROCESS THAT SHOULD BE IN BACKGROUND
}
}
The problem is that to transfer an object to a web worker, they suggest to use JSON.parse and JSON.stringify. However, if I use that on my object, I will loose the method "download". Is there a way to send this object to my function downloadIt without loosing the method download of pdfmake object?