Question

I’m working on a rather huge Firefox extension that uses a lot of HTML and jQuery loaded into a XUL window. Is there some way of augmenting the error console in Firefox to show full stack traces instead of just the file and line where something went wrong?

Answer 1

No, unfortunately the Error Console won’t show stacks. You can use the following work-around:

try
{
  ...
}
catch (e)
{
  // Code has thrown an exception, add stack information to it
  e = String(e) + "\n\n" + new Error().stack;
  throw e;
}

You most likely want to use this code only when debugging – it’s a pretty ugly approach to use in production and you cannot avoid losing information about the exception.