=day(DATE(YEAR(now());MONTH(now());32)-1)

const getDaysArray = (year, month) => {
    year = year || new Date().getFullYear()
    month = month || new Date().getMonth()+1
    console.log(month)
    const names = Object.freeze(
        ['sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat']);
    const date = new Date(year, month - 1, 1);
    const result = [];
    while (date.getMonth() == month - 1) {
        result.push(`${date.getDate()}-${names[date.getDay()]}`);
       
        date.setDate(date.getDate() + 1);
    }
    return result;
}

// Protect range A1:B10, then remove all other users from the list of editors.
var ss = SpreadsheetApp.getActive();
var range = ss.getRange('A1:B10');
var protection = range.protect().setDescription('Sample protected range');
// Ensure the current user is an editor before removing others. Otherwise, if the user's edit
// permission comes from a group, the script will throw an exception upon removing the group.
var me =Session.getEffectiveUser();protection.addEditor(me);protection.removeEditors(protection.getEditors());
if (protection.canDomainEdit()) {  protection.setDomainEdit(false);
}

// Remove all range protections in the spreadsheet that the user has permission to edit.
var ss = SpreadsheetApp.getActive();
var protections = ss.getProtections(SpreadsheetApp.ProtectionType.RANGE);
for (var i = 0; i < protections.length; i++) {
  var protection = protections[i];
  if (protection.canEdit()) {
    protection.remove();
  }
}