Nonconstructors

[Tab Atkins Jr.]

On Mon, Apr 24, 2017 at 1:42 PM, Raul-Sebastian Mihăilă
<raul.mihaila at gmail.com> wrote:
> I have a dilemma. I like how typically the built-in methods are not
> constructors (like Array.prototype.forEach). I have cases in which I'm
> creating a function in which I want to use `this` but I would like the
> function to not be constructible. There are ways of doing this:
> - checking new.target - but you have to check and the last time I checked
> uglifyjs was failing because of it.
> - ({function() { ... }}).function - but this requires creating an object
> every time, so it's ugly.
>
> It would probably be too much to add a new kind of function definition, but
> I was wondering if anybody ever cared about this kind of things. For
> instance, would people usually expect frameworks/libaries or Javascript
> itself to not make functions constructible if they're not meant to be?

The obvious question is, why do you want to use `this`?

~TJ