Arabic/Persian or Different languages Font Problem

[alixvastark]

i loaded my arabic/persian font but some character's won't show or show wrong :

var doc = new jsPDF();
doc.addFont("test/reference/fonts/IranNastaliq-Web.ttf", "IranNastaliq", "normal");

doc.setFont("IranNastaliq"); // Set font
doc.setFontSize(150);

var persianText = "نگار شکار";

doc.text(persianText, 10, 60);

Live problem view :
https://evenz.ir/pdf/js/

Problem Image :
http://evenz.ir/pdf/1.jpg

Here is an article about arabic font to show it true :
https://learn.microsoft.com/en-us/typography/script-development/arabic

How to set some of this below tags in jsPDF or edit codes to fix this problem ?
I'm sure some of this parameter should set in jsPDF to show text true for special font's.

Cursive positioning
Feature Tag: "curs"

Contextual swash
Feature Tag: "cswh"

Kerning
Feature Tag: "kern"

Thank you ❤