New Post: Handling CLR exceptions in JS

I see there was mention of a more general version of this but I don't know where to look for follow-up.

Is there some sort of interface or magic return type we can use to signal the result of an invocation should be turned into a hosted script exception?

e.g. public void MyCLRMethod() {
if (errorCondition) {

  return new ITurnIntoaScriptingExceptionType('Oops you did something wrong');

}
}

script:
try {

 o.MyClrMethod();

}
catch(x) {

 // yay I was handled?

}

I need a way to raise errors in the .NET world that can be handled by the script (V8).