Would you consider adding schematron support?

[mike-stern]

https://www.w3.org/XML/2010/02/xml-model-comments.html defines it as an acceptable type.

<?xml-model href="../foo.xspec" type="application/xml" 
            schematypens="http://purl.oclc.org/dsdl/schematron"?>

[raffazizzi]

I plan on adding schematron support, but I need to start with a feasibility assessment since validating Schematron typically requires XSLT-based strategies and I'm committed to keeping this plugin only built on node libraries.

[mike-stern]

coming from an under-informed position (I am aware of it, but haven't used it), I call attention to saxon-js as a possible lead for your assessment. My apologies if you have already gone down that path.
https://www.npmjs.com/package/saxon-js