function _typeof(o) {
  "@babel/helpers - typeof";

  return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
    return typeof o;
  } : function (o) {
    return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
  }, _typeof(o);
}

function requiredArgs(required, args) {
  if (args.length < required) {
    throw new TypeError(required + ' argument' + (required > 1 ? 's' : '') + ' required, but only ' + args.length + ' present');
  }
}

/**
 * @name toDate
 * @category Common Helpers
 * @summary Convert the given argument to an instance of Date.
 *
 * @description
 * Convert the given argument to an instance of Date.
 *
 * If the argument is an instance of Date, the function returns its clone.
 *
 * If the argument is a number, it is treated as a timestamp.
 *
 * If the argument is none of the above, the function returns Invalid Date.
 *
 * **Note**: *all* Date arguments passed to any *date-fns* function is processed by `toDate`.
 *
 * @param {Date|Number} argument - the value to convert
 * @returns {Date} the parsed date in the local time zone
 * @throws {TypeError} 1 argument required
 *
 * @example
 * // Clone the date:
 * const result = toDate(new Date(2014, 1, 11, 11, 30, 30))
 * //=> Tue Feb 11 2014 11:30:30
 *
 * @example
 * // Convert the timestamp to date:
 * const result = toDate(1392098430000)
 * //=> Tue Feb 11 2014 11:30:30
 */
function toDate(argument) {
  requiredArgs(1, arguments);
  var argStr = Object.prototype.toString.call(argument);

  // Clone the date
  if (argument instanceof Date || _typeof(argument) === 'object' && argStr === '[object Date]') {
    // Prevent the date to lose the milliseconds when passed to new Date() in IE10
    return new Date(argument.getTime());
  } else if (typeof argument === 'number' || argStr === '[object Number]') {
    return new Date(argument);
  } else {
    if ((typeof argument === 'string' || argStr === '[object String]') && typeof console !== 'undefined') {
      // eslint-disable-next-line no-console
      console.warn("Starting with v2.0.0-beta.1 date-fns doesn't accept strings as date arguments. Please use `parseISO` to parse strings. See: https://github.com/date-fns/date-fns/blob/master/docs/upgradeGuide.md#string-arguments");
      // eslint-disable-next-line no-console
      console.warn(new Error().stack);
    }
    return new Date(NaN);
  }
}

export { _typeof as _, requiredArgs as r, toDate as t };
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