I believe every array iteration method that takes a callback, except for
reduce and reduceRight, take an optional receiver as the last argument (the
`this` value), so they can't be meaningfully/ergonomically extended.
On Thu, Aug 15, 2019 at 3:00 PM Andrea Giammarchi <
andrea.giammar...@gmail.com> wrote:
> isn't the second argument already reserved for the context?
>
> ```js
> [1, 2, 3].findIndex(function (i) { return i == this; }, 2);
> // 1
> ```
>
> On Thu, Aug 15, 2019 at 11:51 PM Cyril Auburtin <cyril.aubur...@gmail.com>
> wrote:
>
>> It should be possible to add a second optional argument to the `find` and
>> `findIndex` array methods, similarly to `indexOf`
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