Hello. I'm trying to use shadow-cljs with Calva, and there is no progress. I can connect to repl via shadow-cljs cljs-repl frontend, but Calva says Failed starting cljs repl for shadow-cljs build: :frontend. Is the build running and conected? Shadow works in lein mode, so I added [cider/cider-nrepl "0.20.0"] into project.clj, then I added it into shadow-cljs.edn, no effect. Can someone help me?

@kana what steps are you taking when you try to connect to Shadow-cljs via Calva?

What’s the best way to have code that only runs in development mode? In figwheel-main I configured an extra env/dev source path.

Nevermind, able to achieve it with the :dev and :release configs. Shadow-cljs is amazing!

you can't change the classpath in build configs?

@richiardiandrea can you name some of the npm libs you use in your azure builds or other node builds? I'm working on the one-file bundler thing and need examples of libs people actually use

need to test this a bit

I know that this won't work with all node libs but if webpack can do it so should we 😉

@lilactown 1. install shadow via lein 2. add shadow-cljs.edn

{:lein true
 :builds {:frontend ...}}

lein run -m shadow.cljs.devtools.cli watch frontend

lein run -m shadow.cljs.devtools.cli cljs-repl frontend

This looks like a shadow-cljs coding session.
Failed starting cljs repl for shadow-cljs build: :frontend. Is the build running and conected?

@kana do not do this

do not launch using lein. that is pointless.

just run shadow-cljs watch frontend and shadow-cljs cljs-repl frontend

it will use lein internally when appropriate

but shadow-cljs just runs lein

not exactly

it will use lein to run the watch that is correct

okay, but it doesn't work too

but if a "server-mode" process is running (eg. the watch) then it won't run lein and instead connect to the server process

so cljs-repl will not run through lein but instead connect to the previous watch

did you wait for watch to start fully before running cljs-repl?

lein run -m shadow.cljs.devtools.cli cljs-repl frontend this will NEVER work when launched through lein

Yes. As I say, cljs-repl frontend fully works from cli

$ npm run shadow-cljs watch frontend
...
# another terminal
$ npm run shadow-cljs cljs-repl frontend

> [email protected] shadow-cljs /Users/kana/Development/waifoo
> shadow-cljs "cljs-repl" ":frontend"

shadow-cljs - config: /Users/kana/Development/waifoo/shadow-cljs.edn  cli version: 2.7.24  node: v10.6.0
shadow-cljs - connected to server
[1:1]~cljs.user=> js/document
#object[HTMLDocument [object HTMLDocument]]
[1:1]~cljs.user=>

But Calva returns the same in "Calva says"

This looks like a shadow-cljs coding session.
Failed starting cljs repl for shadow-cljs build: :frontend. Is the build running and conected?

did you use calva connect?

Wow

I just trying to connect to cljs repl separately from clj repl, by "Attach ClojureScript repl" command, but when I am trying to connect to clj repl, it always successfully connected to cljs repl

Thanks a lot, you are saved a lot of my time!

There was only one rebuild after cljs change (in log), but there were two reloads in browser

{:lein true
 :builds {:frontend
          {:output-dir "resources/public/js"
           :target :browser
           :modules {:main {:entries [waifoo.client]}}
           :asset-path "js"
           :devtools {:watch-dir "resources/public/css"}}}}

I'm not sure what you mean with "two reloads"

the :watch-dir is incorrect and should be resources/public

https://shadow-cljs.github.io/docs/UsersGuide.html#_css_reloading

:asset-path should also be /js

also prefer absolute paths, will save you later

(but that doesn't affect live-reload in any way)

after any change in cljs, the module will be launched in the browser twice

what does that mean to you?

is a function executed twice?

by default shadow-cljs doesn't run anything and only reloads you code

okay, I have a tolplevel code in module

do you have any hooks configured?

(defonce x (atom 0))
(println "RELOADING" (swap! x inc))

at first run we will se "RELOADING 1"

after every single change we will see "RELOADING 2" and "RELOADING 3" after second

what is a "change" to you? assuming editing it in an editor?

yes

a simple touch src/your/file.cljs triggers 2 reloads?

it doesn't trigger any reloads

it should. are you sure you touched the correct file?

just trying to rule out your editor doing stuff that could trigger the second reload

sorry, it triggers only 1 reload

does it mean, that it is something with editor

oh, maybe parinfer

very likely yes

the live-reload code is pretty fast so it just probably gets triggered twice

eg. you save the file, then run some on-save hook which saves it again