Possible to pass JS closure/function to a registered native function for invocation?

[ignatz]

I wanna create an API that looks like:

rustyscript.functions.registered((handle) => {
  handle.fun();
});

Both rustyscript.functions.registered() and handle.fun() are natively registered. That's all dandy. I'm just not sure how to receive the closure as a stored function that I can invoke from rust. The registered function (i.e. registered()) receive JSON values but js_value::Function doesn't seem to be serializable.

I did stumble upon register_entrypoint, which is the only thing I found accepting a closure. Maybe a red herring, maybe that could be a work around 🤷. Generally, is this something that's supported? How would you do it?

[ignatz]

I didn't find a way to pass a closure but I found a way to implement my intended API differently. It's a bit more brittle than I would have liked but will do for now. So I'll go ahead and close this to not waste your time.