There's no cider-connect-clojurescript function

[vemv]

There'a certain asymmetry given these 3 functions:

• cider-connect
• cider-jack
• cider-jack-in-clojurescript

Given those 3, one could expect cider-connect-clojurescript to exist too. But it doesn't!

The thing is, I'd like to connect to a clojurescript nrepl session started outside emacs (e.g. from a terminal, lein figwheel with piggieback middleware). This doesn't seem like an unusual need?

So, if I M-x cider-connect and enter the nrepl address of a running clojurescipt nrepl session (started by figwheel), CIDER will connect, but autocompletions will be for clojure rather than clojurescript.

IOW, cider internally is not cljs-aware when running cider-connect.

What do you think?

Cheers - Victor

[bbatsov]

Makes sense to me. Probably this function should be just a combination of the existing function + setting the REPL type to ClojureScript.

[vemv]

Awesome to hear!

setting the REPL type to ClojureScript.

Is there a function for this right now? (without having to fiddle with CIDER internals)

[yannvanhalewyn]

I too am looking for a way to set the connection type to clojurescript! I often start my cljs-repl from a clj-repl.

Update: by reading cider code I managed to find a way to update the buffer connection type. Would like to know if there is a better way to do it though. With the cljs-repl as active buffer:

(setq-local cider-repl-type "cljs")

[razzmatazz]

I would be interested in this too; @yannvanhalewyn how do you evaluate the setq-local function on the repl? C-x C-e invokes clojure fn, instead of emacs

[bbatsov]

@razzmatazz C-:. Sorry for ignoring this trivial ticker for a while but the past few months have been extremely busy for me.

[yannvanhalewyn]

@razzmatazz In cider mode you can still use M-:, or M-x "eval-expression". If you do this a lot you can add your own helper function to your emacs config:

(defun cider-make-cljs-repl ()
  "Changes the connection type of the repl buffer at point to CLJS."
  (interactive)
  (setq-local cider-repl-type "cljs"))

[jmckitrick]

I'm happy to help with a solution here, if there's coding to be done. Something like this would be a good way to contribute....

[bbatsov]

@jmckitrick There's certainly a bit of coding to be done. We need two simply functions - cider-connect-clojurescript and perhaps one more interactive command to just change the REPL type (similar to what @yannvanhalewyn suggested).

[jmckitrick]

(defun cider-make-cljs-repl ()
  "Change the repl to CLJS mode."
  (interactive)
  (setq cider-repl-type "cljs"))

(defun cider-connect-clojurescript ()
  "Connect to a clojurescript repl."
  (interactive)
  (cider-connect)
  (cider-make-cljs-repl))

Would this do the trick?

[jmckitrick]

Actually, a simple test plan would be best. I'll try that locally, and open a PR if it works. So @vemv @yannvanhalewyn @razzmatazz if you'd add one here, I'll try it locally and tweak my 'patch' accordingly, simple though it may be.

[bbatsov]

I'd suggest adding a more generic function - e.g. cider-repl-set-type and it could be used them to change a REPL type in both directions. Interactively it would prompt you to chose the type, but called from Elisp it would take the type as param.

[antonzhyliuk]

👍 for this feature. I'm trying to connect figwheel repl using piggieback middleware.
Missing clojurescript connect function confused me :)

[jmckitrick]

So more like:

(defun cider-repl-set-type [type]
  "REPL `type' should be either \"clj\" or \"cljs\"."
  (interactive "s")
  (setq cider-repl-type type))

(defun cider-connect-clojurescript ()
  "Connect to a clojurescript repl."
  (interactive)
  (cider-connect)
  (cider-repl-set-type "cljs"))