Method called after adding the rows to the workbook. Not supported when worker is set. To use with web workers, use the option in setupExcelExportWebWorker.
Method called before adding the rows to the workbook. Not supported when worker is set. To use with web workers, use the option in setupExcelExportWebWorker.
fields?
string[]
The columns exported. This should only be used if you want to restrict the columns exports.