In your opinion can I remove dependency on user.clj ?

I just updated all the various libraries with Clojure (to 1.9) and Clojurescript

and now locally I get a weird error:

Uncaught TypeError: Cannot read property 'call' of undefined

(ns figwheel.connect.build-dev (:require [myns.core] [figwheel.client] [figwheel.client.utils]))
(figwheel.client/start {:on-jsload (fn [& x] (if js/myns.core.mount-root (apply js/myns.core.mount-root x) (figwheel.client.utils/log :debug "Figwheel: :on-jsload hook 'myns.core/mount-root' is missing"))), :build-id "dev", :websocket-url ""})

ah actually I think it was related with dev-tools after all