Apps Script Pattern. Stop Script Execution on conditions from Sheet

The common pattern for checking the business logic before executing automation:

You show the message with instructions on what the user needs to do before running the script. To accomplish this:

1. Calculate the message in Google Sheet’s cell
2. Create a named range of this cell
3. Add this code to your script:

/**
 * @param {String} rangeName
 * 
 * @returns {Boolean} toStopExecution
 */
function getStopMessageBoxFromNamedRange_(rangeName) {
  var ss = SpreadsheetApp.getActive();
  var r = ss.getRangeByName(rangeName);
  var v = r.getValue();
  if (v === '') {
    return false;
  }
  var stopHeader = 'The script was stopped';
  Browser.msgBox(stopHeader, v, Browser.Buttons.OK);
  return true;
}

The usage is simple:

function myMainAutomation_() {
  var toStopExecution = getStopMessageBoxFromNamedRange_('exit_msg');
  if (toStopExecution) return;
  
  // other code...
  doTheRestOfWork_();

}

That’s it. What patterns do you use?