he/him 
99% of the time I see usage of Array.prototype.some and Array.prototype.reduce, it would have been much more readable with a manual loop.
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I’m okay with unary negation if it’s on a value I know to be boolean. But I see it used to negate too many other things (including null or undefined).
Yeah I'm okay with this usage too. Another rule that I use is that I only use it on bare variables like `!isFoo` while more complex expressions I use `isFo() === false`.
