/* Credit: https://gist.github.com/chipoglesby/26fa70a35f0b420ffc23 */

function sortGoogleSheets() {
  var ss = SpreadsheetApp.getActiveSpreadsheet();

  // Store all the worksheets in this array
  var sheetNameArray = [];
  var sheets = ss.getSheets();
  for (var i = 0; i < sheets.length; i++) {
    sheetNameArray.push(sheets[i].getName());
  }

  sheetNameArray.sort();

  // Reorder the sheets.
  for (var j = 0; j < sheets.length; j++) {
    ss.setActiveSheet(ss.getSheetByName(sheetNameArray[j]));
    ss.moveActiveSheet(j + 1);
  }
}