Re: (NS_ERROR_NOT_AVAILABLE) [jsdIStackFrame.isNative]

John J. Barton wrote:
> I wrote:
> ---
> if (frame.isNative) return "(native)";
> --
> And I got
> Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) 
> [jsdIStackFrame.isNative]"  nsresult: "0x80040111 (NS_ERROR_NOT_AVAILABLE)"
> How can I know before issuing frame.isNative that it will fail?
>
> Thanks,
> John.
See:

http://lxr.mozilla.org/seamonkey/source/js/jsd/idl/jsdIDebuggerService.idl#772

Use 'isValid' on the inherited jsdIEphemeral interface.

You can, or course, also use exception handling to catch errors 
after-the-fact as appropriate.
John.