I have a class similar to Completer. It has a method similar to completeError which takes an exception and stack trace (typically one caught in a try/catch block in user code). There is a situation in which I want to be able to cause this exception to be rethrown at a later point synchronously (similar to how a Future that doesn't have an error handler passes the error to the zone's uncaught error handler).

However, there's no current way to rethrow the exception with a given StackTrace object.

Ideally you'd be able to do something like:

  throw error at stack;