bug in func2

[FarazJahanmanesh]

in func2 in your service you are not return any thing in the last else

else {
  var day2 = this.day + 10;
  this.month = (day2 / 30) + 10;
  this.day = (day2 % 30);
  if (day2 % 30 == 0) {
    this.month--;
    this.day = 30;
  }
  this.year = this.gregorianYear - 622;
}

and in typescript version 5.2.2 its have error

[m-khosravi]

it's a deprecated package please use something more UpToDate like ngx-persian