I see that you're actually creating your own slime-js-minor-mode-map. I'm guessing that was necessary because you didn't require slime-js before requiring setup

I see that you're actually creating your own slime-js-minor-mode-map. I'm guessing that was necessary because you didn't require slime-js before requiring setup-slime-js. Maybe it will resolve your issue of you put this at the top of the file? (require 'slime) (require 'slime-js) The swank-js documentation says it depends on js2-mode too. Are you using that? At least I have no issues with entering arrays in the repl.