Static types are sanity when the people and years keep increasing. It isn't at all important in small one man projects since most of your defined types are in your head in any case.

There is nothing wrong with JavaScript as a language beyond it's, originally questionable, foundations that have since been iterated upon (much like PHP).

As a massive fan of static typed languages. There is no denying that dynamic typed languages are more fun to develop with in smaller project. It just they often hit a tipping point when they become a horror to deal with. I can still remember my first legacy Python code based where everything was thrice nested dictionaries.