cxsd fails silently with unknown encoding

[machinagod]

When running cxsd against a XSD file using a non-supported encoding in libexpat (example here), csxd will fail with the following error:

Supported encodings in libexpat are (from here):

There are four built-in encodings in Expat:

UTF-8
UTF-16
ISO-8859-1
US-ASCII

I believe this is caused by node-expat not supporting the Unknown Encoding parser.

Reencoding the file in UTF-8 or hard setting the parser encoding on the Parser initialization (on my fork, here) allows the parser to properly complete.

Recording this issue as a helper for others suffering the same issue.