I had some free time today and was feeling a bit whimsical, so I took a swing at writing a SFZ-to-JSFX converter.
It was intended as a stepping-stone to creating a more tailored sample-based JSFX effect. This was a fun proof-of-concept, but I'm not sure about it as a long-term strategy. I'm mostly posting it here because I think it's neat, and I'm kind of impressed that it works.
It currently doesn't support many op-codes - only pitch_keycenter/key/lokey/hikey/lovel/hivel/lorand/hirand for now, but others would be fairly straightforward now the basics are in place.
Here's an example patch, both JSFX and original SFZ (using samples I recorded many years ago). I could definitely make some things more efficient, with caching and whatnot.
Here is what the patch sounds like (with a bit of reverb).
Here's the converter
on the Stash if you're curious, usable as an interactive web-page, or from Node.js.