Remove multiple empty rows at once in ExcelJS

Question

I have the following function that works well for small number of rows:

async function RemoveEmptyRows() {
  await Excel.run(async (context) => {
    const sheet = context.workbook.worksheets.getActiveWorksheet();
    var selectedRange = context.workbook.getSelectedRange();
    var surroundingRegion = selectedRange.getSurroundingRegion();

    var firstCell = selectedRange.getCell(0, 0);
    firstCell.load(['columnIndex']);
    surroundingRegion.load(['rowCount', 'columnCount']);
    

    await context.sync();
    var newRange = sheet.getRangeByIndexes(0, firstCell.columnIndex, surroundingRegion.rowCount, 1);
    newRange.load(['address', 'rowCount', 'values']);
    await context.sync();
    
    var i = 0;
    var loopRange = newRange.rowCount;
    var counter = 0;
    var cellText = "";

    while (i < loopRange) {
      cellText = newRange.values[i][0];

      if (cellText == "") {
          var entireRow = sheet.getRangeByIndexes(i - counter, 0, 1, surroundingRegion.columnCount);
        entireRow.delete(Excel.DeleteShiftDirection.up);
        counter++;
      }
      i++;
    }

    await context.sync();
  });
}

The problem with this function is that it shifts the entire row up, row by row. There is another function (modified from ScriptLab) to remove duplicates, that works well with a much larger number of rows.

async function RemoveDuplicates() {
  await Excel.run(async (context) => {    
    const sheet = context.workbook.worksheets.getActiveWorksheet();
    var selectedRange = context.workbook.getSelectedRange();
    var firstCell = selectedRange.getCell(0, 0);
    var surroundingRegion = selectedRange.getSurroundingRegion();

    firstCell.load('columnIndex');
    surroundingRegion.load('address');

    await context.sync();
    var columnIndex = firstCell.columnIndex;
    
    const deleteResult = surroundingRegion.removeDuplicates([columnIndex], true);
    deleteResult.load();
  });
}

Is there a way to create something similar to the RemoveDuplicates function, but for EmptyRows?

Thanks.

Answer 1

So far Excel JS do not have a DeleteEmptyRows(), but it sounds like a good suggestion, we will consider creating this API in the future.

Is that OK to sort the range? if yes, here is a workaround. Firstly, sort the range, therefore the empty rows would stay together, then create a range that includes the empty rows, after that, you can call range.delete(up) to remove the empty rows.