Intentional errors from an executed script

[seubert]

Right now the only way to return from a script is via the exit() function in sandbox.js. I am looking to add a way to intentionally return errors so they can be more efficiently reported as such. Would there be any interest in this from others or ideas on the best way to implement it?

[dashed]

I'm interested in this as well.

As per my comments at #28 (comment). One could get the returned value from the closure (and thus from the script) and feed it into the exit function.

The following would do this:

Sandbox.prototype.wrapForExecution = function(source) {
  return "\"use strict\";\
  var sandbox = Object.create(null);\
  sandbox.exit = exit;\
  Object.freeze(sandbox);\
  var exports = Object.create(null);\
  var exit_val = (function() {\
  var sandbox = null;\
  " + source + "})();\
  typeof exports." + methodName + " === \"function\" && exports." + methodName + "();\
  sandbox.exit(exit_val);";
};

@bcoe Thoughts on this?