How can I rethrow an exception in Javascript, but preserve the stack?

Question

In Javascript, suppose I want to perform some cleanup when an exception happens, but let the exception continue to propagate up the stack, eg:

try {
  enterAweso         


        

Answer 1

The stack property of an Error object is created at the same time as the Error object itself, not at the point it's thrown. They're often the same because of the idiom

   throw new Error("message");

and if you use the code just as you've written it, the stack property will not be changed when you rethrow the error.

Answer 2

This is a bug in Chrome. Rethrowing an exception should preserve the call trace.

http://code.google.com/p/chromium/issues/detail?id=60240

I don't know of any workaround.

I don't see the problem with finally. I do see exceptions silently not showing up on the error console in some cases after a finally, but that one seems to be fixed in development builds.