> Is this simply a mistake in the grammar? The grammar appears to allow trailing comma after rest elements, so I think it’s an implementation error.
> ArrayBindingPattern[Yield,GeneratorParameter] : > [ Elisionopt BindingRestElement[?Yield, ?GeneratorParameter]opt ] > [ BindingElementList[?Yield, ?GeneratorParameter] ] > [ BindingElementList[?Yield, ?GeneratorParameter] , Elisionopt > BindingRestElement[?Yield, ?GeneratorParameter]opt] > On Feb 12, 2015, at 10:01 PM, Michael Ficarra <[email protected]> > wrote: > > Is there any reason why a trailing comma is not allowed in an > ArrayBindingPattern when it has a BindingRestElement? I noticed yesterday > that my parser was erroneously allowing these, but the inconsistency with > both ArrayLiterals and ObjectBindingPatterns is bothering me. Is this simply > a mistake in the grammar? I understand that we wouldn't want to allow holes > or other BindingElements to follow the BindingRestElement, but I don't see a > problem with a single trailing comma. > > Michael Ficarra > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
