Doesn't throw in functions

[Z3TA]

Example code: `

const Iroh = require("iroh");

let stage = new Iroh.Stage(function foo() { throw "banana"; } foo(););

eval(stage.script);

` The exception will be ignored!

[Z3TA]

I've tracked it to function DEBUG_FUNCTION_CALL, where theres a try catch ... Maybe make it possible to listen for errors ... !? hmm

[maierfelix]

I'm working on it

[maierfelix]

Errors shouldn't be suppressed anymore with https://github.com/maierfelix/Iroh/commit/3edc548f433fdd32362cc9d0b1f54652eb7f874e

[Z3TA]

I think "throw" outside a try should generate an Iroh.PROGRAM "exception" event

That way you can listen for it and get the source location and maybe even a call stack.

[maierfelix]

This would require to patch a try {} around the submitted code, which would break global variable/function support. However I experimented a bit and came up with this:

let stage = new Iroh.Stage(code);
stage.addListener(Iroh.PROGRAM)
.on("error", (e) => {
  console.error(e.error);
});

try {
  eval(stage.script);
} catch (e) {
  let event = stage.createEvent(Iroh.PROGRAM_ERROR);
  event.indent = stage.indent;
  event.error = e;
  event.trigger("error");
}

So if you want to listen for uncatched errors in your program, you have to evaluate your program this way, which remains global support but requires some additional code lines.