Utility to manually parse a time string (in the ISO 8601 format) back to a Date object

parseTime.js

const utilities = {
  /**
   * Manually parse a time string back to a Date object.
   * Read the following to understand why Date.parse() cannot be relied upon:
   * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/parse
   * https://stackoverflow.com/a/20463521
   *
   * @param {string} time - The time to be parsed in the ISO 8601 format.
   * @returns {Date}
   */
  parseTime: function parseTime(time) {
    // Match time in the ISO 8601 format `YYYY-MM-DDTHH:mm:ssZ` and remember it
    const timeFormat = /^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})Z$/;
    const [, year, month, day, hours, minutes, seconds] = timeFormat.exec(time);

    // Month is 0-indexed
    const monthIndex = month - 1;

    const parsedTime = new Date(year, monthIndex, day, hours, minutes, seconds);

    return parsedTime;
  },
};