Convert UTC to Local time JavaScript

time.js

// To covert the Utc time to local time
  convertUTCDateToLocalDate(date) {
    if (date) {
      let date1;
      if (date.indexOf('-') > -1) {
        date1 = this.splitdate(date);
      }
      else {
        date1 = new Date(date);
      }
      let time = date1.getTime();
      let offset = date1.getTimezoneOffset() * 60 * 1000;

      let newDate = new Date(time - offset);
      return newDate;
    }
  }
  
  
  //This is done to avoid the error of 1 hour lag in IST timezone and it returns the date with local timezone
  splitdate(date) {
    if (date) {
      let splittedDate = date.split('-');
      let year = Number(splittedDate[0]);
      let month = Number(splittedDate[1]) - 1;
      let splittedTiem = splittedDate[2].split(':');
      let h = Number(splittedTiem[0].split(' ')[1]);
      let day = Number(splittedTiem[0].split(' ')[0]);
      let m = Number(splittedTiem[1]);
      let s = Number(splittedTiem[2].split(' ')[0]);
      let date1 = new Date(year, month, day, h, m, s);
      return date1;
    }
  }