Convert INT96 TimeStamp to Date object in NodeJS/JavaScript

int96_to_date.js

const int96ToDate = value => {
  const linuxEpoch = 2_440_588;
  const bigInt = BigInt(value);
  const julianCalendarDays = Number(bigInt >> BigInt(8 * 8));
  const time = Number(
    BigInt(bigInt & BigInt('0xFFFFFFFFFFFFFFFF')) / BigInt(1_000_000)
  );

  const date = new Date();
  date.setUTCFullYear(1970, 0, 1);
  date.setUTCHours(0, 0, 0, 0);
  date.setUTCDate(1 + julianCalendarDays - linuxEpoch);
  date.setUTCMilliseconds(time);
  return date;
};

int96ToDate(4.5376149622786669704411136e25).toISOString();