{{?it.startOfWeek === 0}}var dateCopy = new Date(+date);
dateCopy.setHours(0,0,0);
dateCopy.setDate(dateCopy.getDate()+4-(dateCopy.getDay()||7));
var week = Math.ceil((((dateCopy-new Date(dateCopy.getFullYear(),0,1))/8.64e7)+1)/7) + '';{{?it.padding}}
if(week.length === 1) {
  week = '0' + week;
}{{?}}
dateString += week;{{??}}var dateCopy = new Date(+date);
dateCopy.setHours(0,0,0);
dateCopy.setDate(dateCopy.getDate()+3-dateCopy.getDay());
var week = Math.ceil((((dateCopy-new Date(dateCopy.getFullYear(),0,1))/8.64e7)+1)/7) + '';{{?it.padding}}
if(week.length === 1) {
  week = '0' + week;
}{{?}}
dateString += week;
{{?}}