can anyone tell me how to add live reloading of the server code in the project one generates in https://github.com/omcljs/om/wiki/Intermediate-Tutorial ? I've been playing with the server side and have been running 'lein figwheel' again and again to see changes in core.clj. The cljs changes have been reloading beautifully, of course.

https://github.com/raph-amiard/clojurescript-lua <-- is this the best for cljs on lua? (last commit looks like 5 years ago)

I'm primarily interested in this for being able to use Torch from cljs

I want to add GraphiQL to my project. I’m currently trying via webjars: https://github.com/webjars/graphiql But I’m not sure what and how to add this using foreign libs

Does foreign libs expect a path on the filesystem or relative to the served output file via a webserver?

This answer says: > The path is classpath-relative and the contents of the resources/ directory are added to the classpath, meaning if you want to point to resources/jsonld.js in a classpath-relative way it's just jsonld.js. http://stackoverflow.com/a/34353911/6264

However, when I try:

:foreign-libs
                                [{:file "webjars/graphiql/0.3.1-1/graphiql.js",
                                  :provides ["graphiql"],
                                  }]

Answered in #boot

Does anyone know if Closure modules namespace name should match directory structure? e.g. my.lib -> src/my/lib.js

hello all: fyi, i scratched an itch I had when dealing with cljs on the node platform: https://github.com/ghaskins/lein-nodecljs

comments welcome

TIL ClojureScript has a function arity limit (22 it seems)

so does clojure

it doesn't apply for varargs, just fixed arities

In my ClojureScript code, it seems I'm blowing it up with varargs destructured as maps.

unlikely

cljs.user=> (defn a [& b])
#'cljs.user/a
cljs.user=> (apply a (range 100))
nil

@bronsa it’s actually possible I think

unless you mean something else

Perhaps so, but "`Uncaught Error: Invalid arity: 23`" is hard to dispute with 🙂

if your generating signatures and you hit the limit for fixed arities I don’t think we do the right thing yet - mostly because no one has complained or worked on it 🙂

I wouldn't consider it a problem — in my case, it's the keyword options, and I should have grouped them into (several) maps anyway.

what's the fn signature, roughly?

[a b c & {:keys [lots of options]}]

@dnolen possible how? unless destructure expands differently in cljs than it does in clj i don't see how destructuring a vararg could cause that

cljs.user=> (defn a [x y & {:keys [a b c d e f g h i j k l m n o p q r s t u v w x y z ab bc cd ef fg hi jk lm no pq rs tu vw zy zz]}] )
#'cljs.user/a
cljs.user=> (a 1 2 :y 23, :q 23, :r 23, :v 23, :o 23, :bc 23, :fg 23, :cd 23, :n 23, :w 23, :m 23, :lm 23, :zy 23, :e 23, :s 23, :l 23, :k 23, :vw 23, :z 23, :g 23, :c 23, :rs 23, :j 23, :tu 23, :h 23, :b 23, :zz 23, :pq 23, :d 23, :f 23, :t 23, :x 23, :ab 23, :jk 23, :ef 23, :p 23, :i 23, :hi 23, :no 23, :a 23, :u 23)
nil

I just switched to [a b c & [{:keys [lots of options}] and I'm fine, but tracing it down took a while because of the strange (for me) error message.

¯\(ツ)/¯

I think we’d need to see the stacktrace and the simple reproducer

maybe it's something to do with static fns

@bronsa Or the fact that it isn't really a defn, but a rum/defcs, so I'd have to see what really happens in the defcs macro.

ah

that's more likely then

So I'd like to put together a github project so others can test or improve on this webagents idea. Is there a canonical example of a third party library providing an iRef implementation?

Well, I do have a minimal example:

(ns arity.test
  (:require [rum.core :as rum]))

(rum/defc example-component [a & args]
  true)

(defn example-fn [a & args]
  true)

;; This works fine:
(apply example-fn (mapcat (fn [n]
                            [(keyword (str "arg" n)) (str "s" n)])
                          (range 11)))

;; This, however, breaks:
(apply example-component (mapcat (fn [n]
                                   [(keyword (str "arg" n)) (str "s" n)])
                                 ;; Works up to (range 10), (range 11) causes an exception.
                                 (range 11)))

I don't think I'm able to understand this further — should this be reported as a rum problem?

@jrychter stacktrace makes it clear, MetaFn issue

and perhaps missing compiler support

@jrychter don’t know this for sure, but it might break because you are passing more than 20 arguments to a functions, which is a hard limit set in clojure.

what’s exactly way use proxy like Clojure in ClojureScript?

there is no proxy in clojurescript IIRC

what's your use case?

extend a protocol dynamically

@isaac you may wanna consider looking at specify!

@anmonteiro thanks, it’s look like an alternatives.

Hey folks, question: is there the ClojureScript node repl supported in Cursive at the moment?

@richiardiandrea start a cursive clojure.main repl, then (require '[cljs.repl.node :as cljs-node]) and (cljs-node/-main)

nREPL is the part that doesn't work, clojure.main works just fine

@richiardiandrea pretty sure there isn’t any special ClojureScript REPL support in Cursive at all

but it isn’t hard to make it work - it’s just like the Quick Start - make a script

and make plain Cursive Clojure REPL that invokes it

(identical? :keyword :keyword) ;=> false in ClojureScript?

the result difference with clojure(clojure is true)

@isaac keyword-identical? for that case

oh! thanks, 🙂

but clojure has no keyword-identical?, it seems i need replace it with = or use conditional reader

with :emit-constants it will be true but yes avoid identical? on keywords or symbols

everything else is safe

https://github.com/clojure/clojurescript/wiki/Differences-from-Clojure#data-structures

@dnolen I am using mies and scripts should be already there, and it looks like it is even connecting to the repl...but the window is read-only and the bottom (modifiable) part does not show up...I'd better write to @cfleming 😄

@richiardiandrea there’s a #cursive channel I’m sure someone can help out

tnx 😉

@richiardiandrea but this is what I do and it definitely works 🙂

@richiardiandrea make sure in your REPL setup that you are using the clojure.main option not the nREPL thing - common mistake

ok, I will check, i have blindly executed script/repl in a colleague's terminal tnx

that won’t work

under the IntelliJ Run menu there’s Edit Configurations

you need to add a REPL configuration

and you don’t launch Bash scripts, you just launch the REPL script directly

...trying...

can anyone point me to how to get the server side of the project in https://github.com/omcljs/om/wiki/Intermediate-Tutorial to reload on code changes (like adding routes)? I've tried wrap-reload and a number of other things without success. the client is reloading via figwheel awesomely. I'm an emacs/cider user if that's relevant.

I've been quitting the repl and restarting every time 😐

@macrobartfast if you’re using CIDER you should be able to use refresh from clojure.tools.namespace

just hit , in your CIDER REPL and start typing “refresh"

@anmonteiro ah ok... I'll have to figure out how to connect to a figwheel situation from cider, and then I'll try that

M-x cider-connect should work, no?

or C-c M-c

it doesn't, actually... the intermediate tutorial doesn't expose a port for that AFAIK... but let me double check.

I mean, whatever happens when you run 'lein figwheel' against the outcome of 'lein new om-intermediate-template om-async'.

I haven’t used Figwheel in a while, but I thought it started an nREPL server

I'll check now...

Figwheel has an option to set an nREPL server port, but it doesn't do it by default, I don't think?

well, it was the way to go, but there is a new route as per https://github.com/bhauman/lein-figwheel/wiki/Using-the-Figwheel-REPL-within-NRepl...

I actually had that working on a stock figwheel project (very cool) but for some as-yet-undetermined reason is not working on the intermediate project.

@richiardiandrea Dedicated CLJS REPLs and other improvements (socket REPLs etc) are the next major feature coming to Cursive.

Hopefully in the couple-of-weeks sort of timeframe.

hi, does anyone know how to expect an exception/assertion failure/failure/etc in a cljs.test.async test?

it seems that there's a "promise rejection" that I need to handle but I'm not quite sure which promise library is in play and the docs don't mention it.

anyone?