Node.js's core library is purposefully minimal. Purposefully or not, it's still an issue. Wether you add many small things to your project using an LLM or NPM, it still requires work and the annoying thing is that you'll have to do it for every new Node.js project.

Node.js is very good for IO and it has decent performance even for CPU-intensive work considering it's a dynamic language, but it would sure be nice to have a rich core library like Ruby or Clojure has.

The fact that ClojureScript can do it proves that it's doable even for front-end javascript (using advanced optimisations).