hey, if anyone could please help me with my issue in calling cljs files from the lein repl I just posted about it in the leiningen channel. thanks. 🙂

without using core.async, is there a way to 'queue' messages on a websocket when it's in the "CONNECTING' state ?

manifold stream maybe? https://github.com/dm3/manifold-cljs

I went to Devoxx and heard about Elm there. It seems like I might like static typing more, especially since it gives nice error messages compile time. Still have to finish a clojure(script) project before I can do something with Elm. But I wondered if maybe somebody here tried it. From what I read the javascript interop is slightly more work, but on other fronts it seems better.

@gklijs never used Elm personally but this might be relevant https://www.youtube.com/watch?v=Q6Q5D6mI-34

hello friends, I am using Lumo and puppeteer to scrap some web pages. Some $ selectors returns a js Map object. Does anyone knows how can I use it in cljs ?

@baptiste-from-paris js/Map implements Iterable protocol, so you can unwrap it into js/Array of map entries using js/Array.from

Yes, that’s what I was reading, I have to try that

Thx @roman01la

@gklijs here is one answer... swannodette thinks elm and scala.js are awesome, but he'd rewrite ClojureScript if others took it away from him swannodette@defn#26

@gklijs I’ve done some work in Elm. Elm is really great if you don’t mind writing some javascript on the side

if you need to be pragmatic and you want to stay in one language, then Clojurescript is far better in my opinion

@gklijs i spent some serious time last summer evaluating Elm as a replacement for Clojurescript in a project for a client. Having better confirmation of types in the program was the main reason. I concluded that Clojurescript is much more mature and stable overall, and you can solve the data shaping problem using Clojure.spec of any of the many other libraries out there. In general, you can also get work done faster in Clojurescript, and it involves a lot less code than Elm.

ok, less code is also less chance of errors, and I’m already quit familiar with spec. It just feels a bit cumbersome at times, but on the other side it’s nice you can do a lot of things without specs, and quickly see if it works,

Elm has some notable downsides that may or may not matter to your case, but lack of support for advanced optimizations is one of them. Also, inability to easily write a program that integrates heavily with third-party libraries in JS. Elm devs overall tend to agree that Elm is not the best choice if you need the wider JS ecosystem because of the overhead in time to get things done.

There are other tools than spec out there if you want less verbosity

Clojure is ultimately more flexible since it has a fantastic macro system so you can add whatever features to the language you feel are missing

Continuing with puppeteer I have to inject clojurescript into chrome instance with the addScriptTag in order to use clojure along with puppeteer. Is there a CDN for some kind of cljs.js with the whole language ?

https://github.com/GoogleChrome/puppeteer/blob/master/docs/api.md#pageaddscripttagoptions

Hey all, is it possible to load a clojurescript namespace from lein repl? Does anyone know how to do it?

@derpocious are you familiar with figwheel?

it gives you a repl where you can require things among other goodies

Hi all! Today I'm thinking about making a simple CLJS example to demonstrate JS (export module) interop -- just want to check: has anyone done this? (context is seeing António's talk at the Conj)

Hi all. I'm working on integrating cljs and js code in a project, and I have a build that is working well, except advanced compilation mode is throwing errors on ES6 features:

ERROR - this language feature is only supported for ECMASCRIPT6 mode or better: arrow function. Use --language_in=ECMASCRIPT6 or ECMASCRIPT6_STRICT or higher to enable ES6 features.

:foreign-libs [{:file "src/js"
                :module-type :es6}]

you might need to set :language-in :ecmascript6 in the compiler options

Anyone ever seen the cljs compiler emit a bunch of warnings like:

WARNING: Skipping pass checkVariableReferences 
factory features:  [block function, getters, string continuation ... etc

goog.provide('js.lib');

js.lib.debugMessage = (x = "any old string") => {
  console.log(`Printing ${x} from cljs!`);
};

{:asset-path     "js/main.out"
  :optimizations  :advanced
  :source-map     false
  :parallel-build true
  :language-in    :es6
  :foreign-libs   [{:file        "src/js"
                    :module-type :es6}]}

Hello, I was a bit out of the loop with ClojureScript recently but followed the announcement of :npm-deps and got quite exited. I would like to try the new apollo client via npm-deps with clojurescript in the browser. everything compiles and the node dependencies do get installed. but when I open my app in the browser I get errors like this "Uncaught ReferenceError: module is not defined" and "Uncaught ReferenceError: module$home$roman$workspace$apollo$node_modules$apollo_link$lib$index is not defined" telling me something is not right with my node dependencies. What's the state of :npm-deps? Are there still some restrictions with node modules, is this a bug, am I doing something wrong, or is trying to use a package like apollo-client via :npm-deps still a bit too ambitious? Any ideas? 🙂

Is there a way to tell the cljs compiler to include deps with a chosen build, but not with other builds? (Ideallly via lein cljsbuild)? I've been looking for some docs regarding this process so if you could point me to it that'd be great too

Probably need to use profiles to include/exclude deps

@danielcompton You're right -- that looks like what I want. https://github.com/technomancy/leiningen/blob/master/doc/PROFILES.md

Any way to get an prop in a React Native app, with re-frame ?