exceljs read file

var workbook = new Excel.Workbook(); 
workbook.xlsx.readFile(filename)
    .then(function() {
        var worksheet = workbook.getWorksheet(sheet);
        worksheet.eachRow({ includeEmpty: true }, function(row, rowNumber) {
          console.log("Row " + rowNumber + " = " + JSON.stringify(row.values));
        });
});// i use the vue template
<input type="file" @change="handleChange" />
handleChange(e) {
  this.file = e.target.files[0]
},
handleImport() {
  const wb = new Excel.Workbook();
  const reader = new FileReader()

  reader.readAsArrayBuffer(this.file)
  reader.onload = () => {
    const buffer = reader.result;
    wb.xlsx.load(buffer).then(workbook => {
      console.log(workbook, 'workbook instance')
      workbook.eachSheet((sheet, id) => {
        sheet.eachRow((row, rowIndex) => {
          console.log(row.values, rowIndex)
        })
      })
    })
  }
}