sheet_to_json does not skip blank rows

I have the following configuration which works fine in general:

    let lte = await XLSX.utils.sheet_to_json(workbook.Sheets['Sheet1'], {
      blankRows: false,
      defval: '',
    });

However, I have an excel with 14K rows. I deleted the values in all but one row for test (there is styling in empty rows such as borders and colors but no values). When parsing, sheetjs still attempts to parse all of 14K rows for some reason.

Any ideas what’s causing it ?

[mehars-jalin]

I faced the same issue, and after spending 1 hour, I decided to take a look at the function and discovered that the keyname is NOT camelcase, as documented. So use, blankrows NOT blankRows

[crazyjat]

I am experiencing this issue when trying to read an xlsx file from user upload that contains empty formulas. For example, I have cells that are empty that contain a formula such as =IF($A12 <> "", VLOOKUP(ObjectivesUI!G12,ENUM!E:F,2,0),"") The imported cells look like { t: "s", v: "" } and nothing I do will filter them out.

This is what my import function looks like:

const getXlsxData = (file: File): Promise<WorkBook> => {
  return new Promise(resolve => {
    let reader = new FileReader();
    reader.onload = (e) => {
      if (e.target?.result) {
        let workbook = read(e.target.result, {
          cellDates: true,
          cellFormula: false,
          cellNF: false,
          cellHTML: false,
          cellText: false,
        });
        resolve(workbook);
      }
    };
    reader.readAsArrayBuffer(file);
  });
}

I’m on version 0.17.5. Please help.