The one thing I’ll say about Elixir I’m always impressed how disciplined they are with the issue tracker on GitHub. Currently 17 issues for such a broad piece of work seems nothing less than astonishing.
I believe it is due to 2 things: excellent vision and work first, but also the nature of the language (not a coincidence) tend to lead to strong "lever effect", 2nd level order benefits, hard focus on composability. I'm, though, curious if other people have more insights about that, because it is truly impressive :-)
Erlang/the Beam also helps - there are only 112 open Erlang bugs.
For reference Golang has 6843 open GitHub issues. I am not sure what to make of this.