A way of explicitly reporting exceptions

Boris Zbarsky bzbarsky at MIT.EDU
Mon Jun 23 13:25:34 PDT 2014

On 6/23/14, 4:17 PM, Kevin Reid wrote:
> Clarification: I meant how promptly the listener is invoked (independent
> of the error case).

Oh, yes.  Calling the callback itself off a timeout is a non-starter.  I 
assume that Tab was talking about rethrowing the exception off a timeout.

>     and in fact allows observably detecting whether an exception is
>     caught and rethrown or just not caught.
> I did not intend it to do so. Could you explain?

Sorry, observably detecting via a debugger, not from the script itself.

> (You can notice rethrows and things by inspecting the stack trace, but I
> assume that's not what you meant.)

That's an interesting issue too.  Right now I believe browsers can 
internally rethrow an exception without changing its stack trace...  But 
there is no way for script to do that.


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