Format Date with internationalization

formatDate.js

function formatDate(date) {
   let year, month, day;

   let yearIntl = IntlTime.formatToParts(date.getYear() - 70, 'year');
   let monthIntl = IntlTime.formatToParts(date.getMonth(), 'month');
   let dayIntl = IntlTime.formatToParts(date.getDate(), 'day');

   year = date.getYear() - 70 ? (yearIntl[1] ? yearIntl[1].value + yearIntl[2].value + ',' : yearIntl[0].value + ',') : '';
   month = +date.getMonth() ? (monthIntl[1] ? monthIntl[1].value + monthIntl[2].value + ',' : monthIntl[0].value + ',') : '';

   if ((new Date(date.getYear(), date.getMonth(), date.getDate() + 1)).getDate() != 1) {
      day = dayIntl[1] ? dayIntl[1].value + dayIntl[2].value : dayIntl[0].value;
   } else if ((date.getMonth() + 1) != 12) {
      day = '';
      monthIntl = IntlTime.formatToParts(date.getMonth() + 1, 'month');
      month = monthIntl[1] ? +monthIntl[1].value + monthIntl[2].value : monthIntl[0].value;
   } else {
      day = month = '';
      yearIntl = IntlTime.formatToParts(date.getYear() - 69, 'year');
      year = yearIntl[1] ? +yearIntl[1].value + yearIntl[2].value : yearIntl[0].value;
   }

   return `${year} ${month} ${day}`;
}

/** Example

formatDate(new Date(90 * 86400000) - 86400000);

*/