Reading .xlsx

readXlsx

_function

Read a spreadsheet package into a Workbook.

Both OOXML serialisations are accepted: an XML .xlsx, and a binary .xlsb (BIFF12), which is the same OPC container with binary office-document parts. The two are auto-detected from the package itself rather than from a file extension, so a caller never branches on which form it holds, and the model produced is the same either way. See ../xlsb/read.ts for what the binary path does not yet decode.

function readXlsx(data: Uint8Array, options: ReadPackageOptions = {}): Workbook;

Throws: UnsupportedFormatError if the input is neither: a legacy .xls (.format === 'xls') or an unrecognised/non-ZIP blob ('unknown'). Throws: XlsbParseError if a binary .xlsb part is malformed. Throws: PackageReadError if the input is a ZIP that cannot be unpacked: a corrupt or truncated archive, or one exceeding the inflate bound (a probable zip bomb).