I've asked a similar question in #figwheel-main but now I'm trying to go about it from another angle: if I have a clj + cljs web app (I'm using figwheel-main for development) and want to deploy that to a VM, how do I do this "correctly"? Atm I'm trying to build an uberjar and it doesn't contain my js compiled code.

Is there another/better way? The rest is up and running, that is, if I start my app on localhost via leiningen, I can connect from the web, but I don't want to do that.

@johb.maier this is the approach I personally used (host system is Dropwizard based REST app)

works quite well for me

@xfyre Thanks, I'll have a look!

then you’ll just need to plug it in (again Dropwizard specific construct, YMMV)

bootstrap.addBundle(new AssetsBundle("/public", "/ui", "index.html"))

I just this moment managed to get my js code into a jar as well.

But it's not found on the site, sadly.

I personally found it very difficult to interbreed maven based application deployment with CLJS app; the approach above is far from ideal, but works flawlessly

@xfyre Thank you! I figured out my mistake, but I'm definitely open to trying out your way as well as I'm not content yet.

I forgot to add a route for my resources...

In dev mode, it makes no difference, but when I have a jar, it ofc does...

Hey! I'm trying to get clojurescript running with figwheel and vim-fireplace. Everything seems good so far, except of the println statement. I have a (enable-console-print!) call in the beginning of my script, but calling println only works in my editor connected to repl, there is no console.log in browser

Calling (.log js/console 1) from my editor gives me console log in my browser, but (println 1) doesn't

@anton173 I think this is a Figwheel-specific issue in the way its printing subsystem is arranged.

@mfikes any ideas on what to do next?

I don't know, other than to dig into the Figwheel implementation.

IIRC (from digging into https://github.com/bhauman/lein-figwheel/issues/575), I think Figwheel doesn't really let you set *print-fn*

That’s weird because I’m running the very basic example provided by Figwheel itself

Yeah, with the Flappy Bird Figwheel demo, you can (set! *print-fn* 3) and it will go back to the original value on its own.

Or really, it is being constantly bound https://github.com/bhauman/lein-figwheel/blob/bda2b1859bd1eb3f3961b3df9d6cf592f602e760/support/src/figwheel/client.cljs#L197

@mfikes excuse me, I don’t clearly understand what you mean

Figwheel's implementation is evidently binding *print-fn* each time something is evaluated, so if you try to set it, this binding will override your setting.

Here's an example to consider

cljs.user=> (def ^:dynamic *foo* 1)
#'cljs.user/*foo*
cljs.user=> (binding [*foo* 4] (set! *foo* 2))
2
cljs.user=> *foo*
1

FWIW, if you run a browser REPL using clj -m cljs.main, initially prints will go to the REPL. But if you do (enable-console-print!) then they will start going to the console. This is because the browser REPL doesn't bind *print-fn* during evaluation like Figwheel does. Figwheel has its reasons for doing that but perhaps its implementation could be revised to allow user code to set *print-fn*.

Thank you so much, Mike! So the only way to print smth to the browser console is to implement my own method?

Hmm.. i also see there’s a Figwheel-main project

Yeah, it appears figwheel-main prints to both the browser console and the REPL.

I have a very simple ring/compojure/hiccup app running that shows average Temperature per month for a given city. And now I want to show via tool tips the different years and the temperature that went into the average using clojurescript. I am searching for a tutorial that tells me how to setup figwheel so I can do Repl development on the page and also I don't have any idea how I would send the raw data to the app. I guess I could either send it inside the rendered page or I could do a second ring route that sends data In JSON format. Any hints?

What's the best client routing library for clojurescript? Seems like Secretary's kind of dead, yeah?

or is it

hey folks, does any one has any experience on creating a server side web application using clojurescript ? I'd like to learn about your stack and experience

@lxsameer you mean a regular web app with REST API and client side in CLJS?

we discussed one case a couple of hours ago

no, I met a server side application in cljs which runs on nodejs

I am doing "lein cljsbuild once" and am getting an error;

is there any way how I can find out at which step it is failing?

java.lang.Exception: Could not write JavaScript nil

It seems that it is compiling my client-side clojurescript; I guess that it fails in trying to complile some server-side clojurescript, but I am not sure.

@hoertlehner You might get more insight by enabling the :verbose compiler option. https://clojurescript.org/reference/compiler-options#verbose

@mfikes thanks. but this still does not even show me which file it wants to compile.

@hoertlehner Is the stack trace included with the Exception? It is thrown here https://github.com/clojure/clojurescript/blob/c2f5aba2f59cf30dbc13c968d8ee3f0e4359d38c/src/main/clojure/cljs/closure.clj#L1982 If :verbose doesn't give a clue it might be possible to try to find where the nil is being generated and to log more context at that point by making a custom build of the compiler.

I think it somehow cannot find a dependency.

devtools dependency.

I guess it is related to that.

If you end up revising the compiler and want to build it: https://clojurescript.org/community/building

thanks @mfikes

I have two source paths defined. One in :cljsbuild :builds

The other in :profiles :source-paths

do they have to match?

@mfikes I fixed my issue. Thanks for your help. I just had the cljs file named "clj" and this somehow I guess then tried to compile all clojujre libraries to clojurescript.

I guess. Not sure.

Cool. That's interesting though, as clj files would normally be ignored by the compiler (except for the use case of requiring macros)