Corrupt xlsx file

[ingermaa]

Im getting Corrupt excel file while opening the file in Excel.

Code:

private saveAsExcelFile(buffer: any, fileName: string): void {
  const data: Blob = new Blob([buffer], {
    type: EXCEL_TYPE
  });
  saveAs.saveAs(data, fileName + '_export_' + new Date().getTime() + EXCEL_EXTENSION);
}

  public exportAsExcelFile(table:any, excelFileName: string): void {
    const readyToExport = [
      { id: 1, name: 'a' },
      { id: 2, name: 'b' },
      { id: 3, name: 'c' }
    ];

    const worksheet: XLSX.WorkSheet = XLSX.utils.json_to_sheet(readyToExport);
    const workbook: XLSX.WorkBook = { Sheets: { 'data': worksheet }, SheetNames: ['data'] };
    const excelBuffer: any = XLSX.write(workbook, { bookType: 'xlsx', type: 'buffer' });
    this.saveAsExcelFile(excelBuffer, excelFileName);

    return;

}

The exported xlsx file starts with:

PK��
     "]�PÖ�|�Z�  Z�  �   docProps/core.xml<?xml version="1.0" encoding="UTF-8" standalone="yes"?>

Version: 0.15.6
Excel version: 365MSO (16.0.12624.20422)

[ingermaa]

It works after updating to Excel to the latest version.