Dmitry Soshnikov wrote:
> On Sat, May 31, 2014 at 1:41 PM, Brendan Eich <brendan at mozilla.org 
> <mailto:brendan at mozilla.org>> wrote:
>
>     Matthew Robb wrote:
>
>         Seems like any identifiers in the arguments should always be
>         defined in scope before ever considering what they will be
>         assigned.
>
>
>     Right, and they are in scope no matter what.
>
>     Seems to me that an implementation bug (can't have parameter
>     default value for destructuring formal) is the only problem
>     brought to light in this thread. Anyone see anything else amiss?
>
>
> No, seems it's the only problem. Also, just to add: esprima parser 
> also has this bug yet (can't have param default value with patterns).

Nicholas kindly filed

https://bugzilla.mozilla.org/show_bug.cgi?id=1018628

to track the SpiderMonkey bug. If you file an Esprima one, could you 
cite it to the list? Thanks,

/be

Dmitry Soshnikov wrote:

> No, seems it's the only problem. Also, just to add: esprima parser 
> also has this bug yet (can't have param default value with patterns).

Nicholas kindly filed

https://bugzilla.mozilla.org/show_bug.cgi?id=1018628

to track the SpiderMonkey bug. If you file an Esprima one, could you 
cite it to the list? Thanks,