> In JS you need a handful of third party packages just to tell if a number is odd

But you absolutely don't.

I get that you're taking a worst-case example, but it also stands that if Node developers would actually take some time to write stuff themselves -- the leftpad situation was absolutely stupid, because `.padStart()` exists -- then the situation wouldn't be nearly as bad.

At my workplace, if you can write the functionality in (depending on the scale) a day to a week, then you're not allowed to use a 3rd party package for it. You can _look_ at what other people have done, but doing it in-house leads to less work overall in the future.