Meta: principles for accepting new function proposals about is HOT 1 CLOSED

I think it's hard to define this upfront.

The alternative code it's replacing reads nicely anyway

It depends. Maybe if it reads even nicer.

It can be composed of two existing functions

Probably better to use two function, however if it's something that is very common, it might make sense to make it an utility method.

It's just the negation of an existing function

If a check does multiple things, just negating the result might not be correct, hence it needs a negated method, like is.emptyObject and is.notEmptyObject. If you negative is.emptyObject and pass in a non-object it will not give you what you intended to check for.

So tl;dr, it really depends and I don't want to assume too much. I would prefer just hearing people out first instead of blocking ideas before they have had a chance to evolve.

from is.