Get the dates between date range in typescript

app.component.ts

// Main class
export class AppComponent {
  _dateFunc: dateFunc = new dateFunc()

  // then somewhere in your main component code add this
  const dat = this._dateFunc.betweenDate(new Date('2017-01-11'), new Date('2017-02-13'));
  console.log(dat)
}

// date function class
class dateFunc {

    isDate(dateArg) {
        var t = (dateArg instanceof Date) ? dateArg : (new Date(dateArg));
        return !isNaN(t.valueOf());
    }

    isValidRange(minDate, maxDate) {
        return (new Date(minDate) <= new Date(maxDate));
    }

    betweenDate(startDt, endDt) {
        var error = ((this.isDate(endDt)) && (this.isDate(startDt)) && this.isValidRange(startDt, endDt)) ? false : true;
        var between = [];
        if (error) console.log('error occured!!!... Please Enter Valid Dates');
        else {
            var currentDate = new Date(startDt),
                end = new Date(endDt);
            while (currentDate <= end) {
                between.push(new Date(currentDate));
                currentDate.setDate(currentDate.getDate() + 1);
            }
        }
        return between;
    }

}