Call me crazy, but I don't see anything that couldn't be done more
concisely with a string literal. Is it supposed to be able to do this?
```js
function foo(x) {
return nameof(x);
}
foo(bar); // "bar";
```
In that case, the engine would have to keep track of usages as well, in a
similar sense as `arguments.callee`, and if it were a function, it would
make optimization quite difficult, as engines don't have the capacity to
statically analyze that such a function is used.
If it is like `typeof`, we now have a breaking change - a keyword that was
a valid Identifier before.
```js
// Error?
function nameof(value) {
return value.name;
}
var bar = {name: 2};
nameof(bar); // "bar" or 2?
```
I don't think this is going to work out in practice, not in ECMAScript
proper. You might appreciate Sweet.js, though.
On Sat, Aug 8, 2015, 21:27 Behrang Saeedzadeh <behran...@gmail.com> wrote:
> Forgot to mention that nameof works with local variables too:
>
> function foo() {
> var aNum = 1;
> console.log(nameof(aNmum), aNum);
> }
>
>
> On Sat, Aug 8, 2015 at 10:38 AM Behrang Saeedzadeh <behran...@gmail.com>
> wrote:
>
>> So basically we could use it like this:
>>
>>
>> function aFunc(aParam) {
>> throw new Error(nameof(aParam));
>> }
>>
>>
>> and nameof(aParam) would return the string "aParam".
>>
>>
>> This is possible to do even right now using arguments.callee and some
>> hacky code, but having it built-in to spec would be nicer IMHO.
>> --
>> Best regards,
>> Behrang Saeedzadeh
>>
> --
> Best regards,
> Behrang Saeedzadeh
> _______________________________________________
> es-discuss mailing list
> es-discuss@mozilla.org
> https://mail.mozilla.org/listinfo/es-discuss
>
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