Xlsb Errors
XlsbParseError
class
Thrown when an .xlsb package's binary BIFF12 content cannot be parsed: a record whose declared size runs past the end of its part, a truncated record header, or a structure that does not conform to [MS-XLSB].
The record streams are hostile input (a spreadsheet library parses untrusted files), so a malformed part fails closed with this error rather than crashing, hanging, or over-allocating. It is distinct from UnsupportedFormatError, which reports that the container is not a format we read at all; by the time this is raised the input has already been recognised as an .xlsb.
ts
class XlsbParseError extends XlsxError {
override readonly name = 'XlsbParseError';
override readonly code = 'malformed-input';
}