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Filename : getTimezoneOffsetInMilliseconds.cjs

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"use strict";
exports.getTimezoneOffsetInMilliseconds = getTimezoneOffsetInMilliseconds;
var _index = require("../toDate.cjs");

/**
 * Google Chrome as of 67.0.3396.87 introduced timezones with offset that includes seconds.
 * They usually appear for dates that denote time before the timezones were introduced
 * (e.g. for 'Europe/Prague' timezone the offset is GMT+00:57:44 before 1 October 1891
 * and GMT+01:00:00 after that date)
 *
 * Date#getTimezoneOffset returns the offset in minutes and would return 57 for the example above,
 * which would lead to incorrect calculations.
 *
 * This function returns the timezone offset in milliseconds that takes seconds in account.
 */
function getTimezoneOffsetInMilliseconds(date) {
  const _date = (0, _index.toDate)(date);
  const utcDate = new Date(
    Date.UTC(
      _date.getFullYear(),
      _date.getMonth(),
      _date.getDate(),
      _date.getHours(),
      _date.getMinutes(),
      _date.getSeconds(),
      _date.getMilliseconds(),
    ),
  );
  utcDate.setUTCFullYear(_date.getFullYear());
  return +date - +utcDate;
}