Function parseDtstart

codebase/sources/dhtmlxscheduler.js:17041–17053

(line)

    return __assign(__assign({}, options[0]), options[1]);
  }
  function parseDtstart(line) {
    var options = {};
    var dtstartWithZone = /DTSTART(?:;TZID=([^:=]+?))?(?::|=)([^;\s]+)/i.exec(line);
    if (!dtstartWithZone) {
      return options;
    }
    var tzid = dtstartWithZone[1], dtstart = dtstartWithZone[2];
    if (tzid) {
      options.tzid = tzid;
    }
    options.dtstart = untilStringToDate(dtstart);
    return options;
  }
  function parseLine(rfcString) {
    rfcString = rfcString.replace(/^\s+|\s+$/, "");
    if (!rfcString.length)