Create a localized date from stringified date

LocalizeStringifiedDateFactory.js

/**
 * This factory delivers a function to create a date from a 
 * stringified Date (new Date().toString()) without the 
 * offset/locale information. Especially useful for comparison
 * between dates in different timezones (e.g. client and server).
 * See https://stackblitz.com/edit/web-platform-ek83hd?file=script.js
 * for a use case.
 */
function localizeStringifiedDateFactory() {
  const months2Object = (acc, v, i) => ({...acc, [v]: i});
  const months = `Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec`.split(`,`).reduce(months2Object);
  const valueMapper = v => months[v] ?? +v;
  const getValues = dateStr => dateStr.split(/:|\s/).slice(1, 7).map(valueMapper);
  const reOrder = values => [values[2], ...values.slice(0, 2), ...values.slice(3)];
  const toDateValues = dateStr => reOrder(getValues(dateStr));

  return stringifiedDate => new Date(...toDateValues(stringifiedDate));
}