Perl module to transform XSL to JSON

Greetings,  could you please suggest me a tool in order to transform an xsl file i have manged to get from XML, into JSON? Thank you

Σχετ: MARC::File::XML 1.0.3 released

greetings to you all, could you please give me a hint on how you treat some long waiting processes? For example we are trying to upload a MARC file and then index it via a web interface, but the whole procedure takes a lot, or we have no idea via dancer front end how is it going, how could we