Tooling, that means? I haven't had an opportunity to work on a big/very-big JS project yet. But from experience based on working on small-medium size JS project

Tooling, that means? I haven't had an opportunity to work on a big/very-big JS project yet. But from experience based on working on small-medium size JS project, I guess console.log() and refresh is just enough. After thinking about it, I guess readability is a huge part of it, there are lots, lots of JS packages. And it makes sense for them to be readable, so they could be easily updated by new contributors to remain valid. Personally, I have really hard time contributing to gems, because of so much metaprogramming in them, I don't feel like spending a week to understand what is connected with what and if my changes can break it.