> 6. What if someone comes up with a better way to solve the problem?
> I want to focus on the last question, because I think it raises the biggest issue. The moment we paste the code into our solution, we create an isolated fork of it. Whenever someone comes up with a better idea, or JavaScript evolves and our solution gets deprecated, we have broken code at our hands and someone needs to fix it.
It must be really weird to program in a language where one must defensively overuse libraries out of fear that somebody will come up with a better run-time predicate to recognize arrays.