The upgrade of shadow-cljs to 2.10.17 breaks cider-jack-in-cljs about re-frame-template

[danielmartincraig]

If you want to resolve this, just simply run lein watch at the command line before attempting to jack into this project

[danielmartincraig]

When I downgrade shadow-cljs to 2.10.15, this behavior disapears.

[kwrooijen]

I have this issue as well, even when I downgrade to 2.10.15. When I create a shadow-cljs.edn file with the :shadow-cljs info from the generated project.clj file the issue is fixed. I'm not familiar with lein-shadow but I wonder how cider is supposed to parse this?

[danielappelt]

I think this can be closed. Running either lein watch or lein deps before jacking into the project with cider should fix the problem. Maybe it would be a good idea to add some upgrade instructions to the README.

[mike-thompson-day8]

I'd be happy to take a PR which added the right words to the README. I'm not a cider user, so it is best I don't write them.

[zachmandeville]

Hi! I am encountering this issue as well, even after running lein watch first. I am uncertain if it's an issue with the template, the readme, my emacs config, or me! Could this possibly be re-opened @danielmartincraig ?

Details for my error:

• I am running doom emacs and just upgraded to latest version as of 2020/12/15
• ran lein new re-frame my-app +cider +10x +handler +kondo
• in my-app repo ran lein deps then lein watch
• opened repo in doom and in src/cljs/my_app/core.clj ran cider-jack-in-cljs
• it gave me two options for running it: lein and shadow
• if i choose lein, I get this error about missing instance
• if I choose shadow, i get server already running, but remain disconnected from repl
• if i run cider-connect-cljs and choose localhost:8777 (which shows in the lein watch logs as being the nrepl port) I get a repl in emacs, and I can evaluate commands in the repl (e.g. running (js/alert "hi") shows an alert box on localhost:8280)
• however, I cannot evaluate code in the buffer, or send expressions from my buffer to the repl, as i get the error 'not connected to any repl sessions'

This is my first re-frame project, and I was assuming I'd be able to evaluate commands in the buffer and do var lookups and such in the same way as a clojure project. is that an incorrect assumption?

[danielmartincraig]

So here's what I think will work - after running lein watch, then kill the lein watch. After that, then do cider-jack-in-cljs, and select shadow-cljs. proceed from there, this is what works for me. I think that jacking in while lein watch continues to run causes your cider to not do the c-x c-e evaluations like you are looking for and stuff.

[zachmandeville]

Yep, that worked! Jacking in with shadow-cljs seemed to be the key. Thank you, @danielmartincraig !