Seriously? isEven? That can be done using `!(n % 2)`.<p>You&#x27;re generalizing, and yes, you&#x27;re being too paranoid. Not all of them actually agree on (really very small) modules. <a href="https:&#x2F;&#x2F;medium.com&#x2F;@Rich_Harris&#x2F;small-modules-it-s-not-quite-that-simple-3ca532d65de4" rel="nofollow">https:&#x2F;&#x2F;medium.com&#x2F;@Rich_Harris&#x2F;small-modules-it-s-not-quite...</a><p>It all boils down to balance and common-sense.