code: function generateSpecialWorkdayOrHolidayRender(dayMap, lang = 'zh-cn') {
    return function render(data, locale, current) {
      const currentDate = formatter(new Date(current), 'YYYY-MM-DD');
      const type = data[currentDate];
      if (type) {
        if (type === 'work') {
          return (
            <span className="workday-label">{localeMap[locale] && localeMap[locale].workday}</span>
          );
        }
        return (
          <span className="holiday-label">{localeMap[locale] && localeMap[locale].holiday}</span>
        );
      }
      return null;
    }.bind(null, dayMap, lang);
  }
docs: 渲染特殊的工作日或休息日，比如国家因节假日而进行的调休 传入的dayMap的格式为：{ '2017-01-02': 'work', '2017-01-03': 'leave', }