I’ve finally decided that I can’t rely on a console repl for ClojureScript on node anymore, and I’m trying to use Cider, since that’s what I use with Clojure. Unfortunately, I haven’t been able to make it work. I’ve added cider/piggieback to my deps.edn, and added the recommended alias:

:aliases {:cider-cljs {:main-opts ["-m" "nrepl.cmdline" "--middleware"
                                   "[cider.nrepl/cider-middleware,cider.piggieback/wrap-cljs-repl]"]}}

;;  Startup: /usr/local/bin/clojure -Sdeps '{:deps {nrepl/nrepl {:mvn/version "0.8.3"} cider/piggieback {:mvn/version "0.5.2"} cider/cider-nrepl {:mvn/version "0.26.0"}} :aliases {:cider/nrepl {:main-opts ["-m" "nrepl.cmdline" "--middleware" "[cider.nrepl/cider-middleware,cider.piggieback/wrap-cljs-repl]"]}}}' -M:cider/nrepl
;;
;; ClojureScript REPL type: node
;; ClojureScript REPL init form: (do (require 'cljs.repl.node) (cider.piggieback/cljs-repl (cljs.repl.node/repl-env)))
;;
user>

TypeError: Cannot read property 'error__GT_str' of undefined
    at Socket.<anonymous> ([stdin]:89:28)
    at Socket.emit (events.js:400:28)
    at Socket.emit (domain.js:470:12)
    at addChunk (internal/streams/readable.js:290:12)
    at readableAddChunk (internal/streams/readable.js:261:11)
    at Socket.Readable.push (internal/streams/readable.js:204:10)
    at TCP.onStreamRead (internal/stream_base_commons.js:188:23)
    at TCP.callbackTrampoline (internal/async_hooks.js:131:17)

do you have to run the init form it suggets? (do (require 'cljs.repl.node) (cider.piggieback/cljs-repl (cljs.repl.node/repl-env)))

well, I’ve since discovered that I don’t have to type anything and I get that stack trace after a few seconds

given that (+2 3) doesn’t work, then I don’t think that form will do anything

right

I just tried anyway, because I really don’t know what I’m doing… but no, nothing happens.

Are you activating your :cider-cljs alias?

I don’t understand that question, sorry

The startup command:

Startup: /usr/local/bin/clojure -Sdeps '{:deps {nrepl/nrepl {:mvn/version "0.8.3"} cider/piggieback {:mvn/version "0.5.2"} cider/cider-nrepl {:mvn/version "0.26.0"}} :aliases {:cider/nrepl {:main-opts ["-m" "nrepl.cmdline" "--middleware" "[cider.nrepl/cider-middleware,cider.piggieback/wrap-cljs-repl]"]}}}' -M:cider/nrepl

when you run cider-jack-in-cljs it won't run with the :cider-cljs alias you setup unless you add it to your dir locals file

^ this

You can manually insert it by C-u M-x cider-jack-in-cljs

and inserting it

or .dir-locals

I believe I set cider-clojure-cli-global-options in the .dir-locals file

But I think the prefix argument (C-u) would be a good first try

in your project root you would add the file ".dir-locals.el"

((clojurescript-mode
  (cider-clojure-cli-aliases . "-A:cider-cljs")
  )))

oh even better

I think, i manage to always F it up though 😢

FWIW, i don't know if that will fix things. I always start clojure script through shadow

OK, I’ve tried this, but to no avail

Did you see the alias in the startup command?

-M:cider-cljs:cider/nrepl is what we’re hoping to see

;;  Startup: /usr/local/bin/clojure -Sdeps '{:deps {nrepl/nrepl {:mvn/version "0.8.3"} cider/piggieback {:mvn/version "0.5.2"} cider/cider-nrepl {:mvn/version "0.26.0"}} :aliases {:cider/nrepl {:main-opts ["-m" "nrepl.cmdline" "--middleware" "[cider.nrepl/cider-middleware,cider.piggieback/wrap-cljs-repl]"]}}}' -M:cider-cljs:cider/nrepl
;;
;; ClojureScript REPL type: node
;; ClojureScript REPL init form: (do (require 'cljs.repl.node) (cider.piggieback/cljs-repl (cljs.repl.node/repl-env)))

looks like the command was updated, but not the aliases. I don’t know how they get updated?

evidently not my deps.edn :)

I wouldn’t expect to see your project alias in the aliases map

those are the injected ones from CIDER

that command, to my eyes, looks correct

I think, unfortunately, we’ve solved a problem, not the problem

Maybe I just need to learn how to use shadow

[stands up on a desk] My name is drew verlee. i have been doing cljs development for like 3 years on and off, i have no idea how to get a cljs repl running correctly without shadow or figwheel.

i await someone to be along shortly and show me a one line of code to do it.

I started setting up shadow on a test project earlier, but hadn’t actually done anything with it. I just tried it now. Worked perfectly

So… apparently shadow is what I’m using from now on

Nope… spoke too soon. I have a working repl, that’s true, but I can’t load namespaces

C-c C-k says that it’s loading the file, but then it just sits there. If I look at any symbols (it’s test file with a single defn in it) then they’re not defined

I started by repl via cljs-jack-in-cljs selected my shadow config and the app rendered without error in my browser. I have my nrepl server buffer running telling me nrepl is on a port, and i havea repl buffer where i can type in commands. However, cider eval last sexp does nothing and if tell cider to quit it tells me "no repls in the current session"

put your cursor in the cljs repl and then try again?

(not a joke. i suspect this will fix it)

it doesnt

it says my repl is connected. it's like it goes through all the steps but doesn't establish the connection

weird. is it possible you’ve navigated to a dependency or something? It sounds like everything is working but it doesn’t recognize the source buffer as being in the project that is connected to the repl

err, ugh. i just had a half formed thought. I know why its happening in a vague way.

It's on my end, not emacs or cider, but how the project is setup.

are the sources in another directory?

there’s something like sesman link directory or equivalents that should hopefully help you correct all that

@dpsutton i think the namespaces are excluded in the compilation step. We have feature flags. When i switched to a different ns everything worked.

womp. well sounds like its for sure your end. and hopefully there is a workaround