Proposal: Object.defineProperty shorthand

[Sean Eagan]

On Thu, May 26, 2011 at 1:43 PM, Mike Shaver <mike.shaver at gmail.com> wrote:
> On Thu, May 26, 2011 at 11:37 AM, Sean Eagan <seaneagan1 at gmail.com> wrote:
>> // ! implies non-writable, ~ implies non-enumerable
>> // all assignment operators can be used
>> ! a.b += c
>
> Legal parse today, though I'm not sure you can get runtime semantics
> that aren't an error.

Correct, I was intending for it to no longer be an error.

>
>> !~a.b++
>> !(~(a.b++))
>
> Legal expressions today with valid meanings.

Yes, I was trying to show that this shorthand would not be applicable
to postfix expressions unless you prefix with #.  Since that could be
confusing, we could just make it never work with postfix expressions
via:

PostfixExpression:
  BasicLeftHandSideExpression

Thanks,
Sean Eagan