Property descriptors as ES6 Maps

Andrea Giammarchi andrea.giammarchi at
Fri Nov 2 09:29:53 PDT 2012

I would add ... am I the only one that does not create a new object per
each defined property ? I am recycling descriptor.value like hell, I wonder
if anyone else out there is doing the same.

On Fri, Nov 2, 2012 at 1:31 AM, Tom Van Cutsem < at> wrote:

> 2012/11/1 David Bruant <bruant.d at>
>> The constructor I have proposed could have an equivalent initialization
>> syntax.
>> Object.defineProperty({}, 'a', PropDesc({value:42, writable:true}))
> I see the merit in your proposal as making the Object->PropDesc conversion
> explicit. However, I think it's too late for ES6: Object.defineProperty
> must continue to accept Objects as its third argument, and that's even
> shorter to write. So even if we would add such a PropDesc constructor, I
> don't think most developers (including myself) would adapt.
> Cheers,
> Tom
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