Promise() vs. new Promise()
C. Scott Ananian
ecmascript at cscott.net
Thu Aug 21 08:51:44 PDT 2014
On Thu, Aug 21, 2014 at 3:22 AM, Salvador de la Puente González
<salva at unoyunodiez.com> wrote:
> The only problem I see here is you can not emulate completely `new` with ES.
> Why Promise add some internal slots when called with new and it does not
> make the same when writing `var p = Object.create(Promise.prototype);
> Promise.call(p, fn);`?
Not true. See, for example:
It's super-annoying, but you can actually write ES5 code that will
properly inherit the new internal slots in ES6.
I'm a big fan of `Function.prototype.new`, though. And I think
`Promise.new.bind(Promise)` is not all that terrible, if you want to
pass around a constructor as a function. (And there's another
es-discuss thread about trying to unify `new` as an "ordinary"
function call in proxies as well.)
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