Re: What type should .findAll return

>
> [snip]
>


> ES5.1 clause 8.6.2 says:
> >           "The value of the [[Class]] internal property of a host object
> may be any String value except one of "Arguments", "Array",..."
> > In other words, host object provides (such as a DOM implementation) are
> not allowed to define new kinds of objects whose [[Class]] is Array.
> > It's fine to want to define a new kind of host object that is
> behaviorally very similar (but slight different) from instances of the
> built-in Array constructor.  But characterizing such objects by saying they
> have [[Class]]=="Array"
> >  is a not meaningful from a ES5.1 specification perspective.
>
> I'm fine with any formulation, as long as it gives the correct behaviour
> in cases like Array.prototype.concat and Array.isArray.
>

ES 5.1 15.4.3.2 Array.isArray()
...
2. If the value of the [[Class]] internal property of arg is "Array", then
return true.
...

Considering Allen's previous comment, this is not going to be allowed.

Rick


>
> Do you have suggestions for what to write?
>
> / Jonas