We do not want to delegate to a target function that can [[Construct]], because there is no such target function -- we're not trying to sugar .bind on a full function. That is too expensive and general (no pre-args, no full function under the hood).

Lexical-only |this| binding means no [[Construct]] and no .prototype for arrow functions. I'm ok with this.

The concern about JQuery or other code wanting to dynamically bind |this| is good but not fatal. Use a long-hand function. I've heard people complain about JQuery's "pronoun trouble" enough to take it with a grain of salt. I know, JQuery, but still: use a long function.

/be

Axel Rauschmayer wrote:
My bad. It is, minus [[Construct]] and *.prototype. I misremembered how bind() works.

On Mar 30, 2012, at 0:01 , Axel Rauschmayer wrote:

Interesting. So x => x * x is not just syntactic sugar for

     function (x) { return x * x }.bind(this)

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