The Excel workbook to parse.
Optional
headerRow: number = 1The row number to use as the header row. Defaults to 1.
A promise that resolves to an object where each key is a sheet name and the value is an object containing:
- headers
: An array of header strings.
- data
: A 2D array of Cell objects representing the data rows.
Parses an Excel workbook and extracts data from each sheet.