There was a talk about Node.js at Open Source Bridge in Portland in 2011 or 2012 (nice con). I was volunteering doing mic handling at that talk.

I remember the speaker saying about how they had no idea about how to debug node programs. My personal reaction was that this was a fun little toy, but the idea of JS on the backend was utter madness. Little did I know what a monster it would become.

For the record I still think JS on the backend (or anywhere else) is madness.