JS was drafted in a week. Node is a band aid on top of a tech stack that webdev is stuck with. Node was done with concurrency in mind, JS wasn't. Compare app

JS was drafted in a week. Node is a band aid on top of a tech stack that webdev is stuck with. Node was done with concurrency in mind, JS wasn't. Compare apples to apples: How does Erlang's ecosystem stack up when it comes to concurrency? How does it compare to Node? Do you even care given your prejudices regarding JS?