How to programmatically pad a cell's height in Google Sheets

macro.gs

function ResizeRow() {
  // Be careful about this. If you change this to `getActiveSpreadSheet()`, it will be super confusing:
  // see https://www.reddit.com/r/GoogleAppsScript/comments/10dbe41/comment/j4knea5
  var sheet = SpreadsheetApp.getActiveSheet();
  var selection = sheet.getSelection();
  var activeRange = selection.getActiveRange();
  var rowsInSelection = activeRange.getNumRows();

  var cell = selection.getCurrentCell();
  var row = cell.getRow();
  var col = cell.getColumn();

  // Leaving these as an example of how to log and for debugging
  Logger.log('[Selection] Row: ' + row);
  Logger.log('[Selection] Col: ' + col);
  Logger.log('[Selection] rowsInSelection: ' + rowsInSelection);

  for (let i = 0; i < rowsInSelection; i++) {
    row = row + i;

    Logger.log('[Loop] Row: ' + row);
    Logger.log('[Loop] Col: ' + col);

    range = sheet.getRange(row, col)
    cell = sheet.setCurrentCell(range)

    Logger.log('[Range] cell: ' + cell.getA1Notation());
    height = cell.getHeight()

    sheet.setRowHeight(row, height + 100);
    cell.setVerticalAlignment("middle");
    cell.setWrapStrategy(SpreadsheetApp.WrapStrategy.WRAP);
  }

  return
};

You technically don't need the for loop (I think macros act on a cell at a time for an entire selection), but just did it this way because I adapted it from an app script