The specific problem is that host objects cannot necessarily match the
semantics of ES5, and for that reason the interaction of host objects
with the ES5 semantics is unclear. There are additional concerns --
various es5 features expose the underlying implementation mechanisms
of the binding -- for instance using get or set properties on a dom
binding would require getOwnPropertyDescriptor to expose that
implementation detail.
--Oliver
On Sep 26, 2009, at 4:00 PM, Mark S. Miller wrote:
On Sat, Sep 26, 2009 at 3:48 PM, Oliver Hunt <oli...@apple.com> wrote:
I would avoid depending on ES5 until there are multiple realworld
implementations at least, especially because
the interaction between the es5 meta-object functionality and host
objects
is less than clear at present.
Hi Oliver, it is precisely the need to clarify this interaction, as
you pointed out in some of your previous posts to es-discuss, that got
us to focus on the need for greater coordination at the last
EcmaScript meeting. Since, as you say, this interaction is currently
unclear, isn't this exactly the kind of problem our standards bodies
should be trying to resolve?
--
Cheers,
--MarkM
