Array.prototype.toObjectByProperty( element=>element.property )

[Darien Valentine]

@Isiah I think you and I just described the identical thing (except that
I’d put `fromEntries` where you put `from`) — and it’s a subset of the
overloaded proposed solution from Crowder above. That three people
responded with the same thing or a variation of it suggests that this is
indeed a gap where a thing intuitively ought to exist.

@Harband Unless somebody else wants to, I’d be interested in trying my hand
at assembling a proper proposal. I think I’ve spent enough time in the spec
& various proposals at this point that I might not totally butcher it.
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