I need a way to handle 'flick' events, these are events of the form: 1. user touches screen 2. user moves finger up/down/left/right 3. user removes finger from sreen so there is a "event down" + a movement event + a "event up"

Hi! I want to compile cljs to both nodejs and browser env. I've got it to work, but I also need to define env (nodejs or browser) in compile time. Is it possible to somehow define it? .cljc has reader conditionals: #?(:cljs ...). Could I define the similar conditional, something like #?(:cljs-node ...)? thanks!

@zarkone in shadow-cljs you can define :reader-features #{:cljs-node} for per build but the feature was refected from core so beware. https://dev.clojure.org/jira/browse/CLJS-2396

another option might be using goog-define

Is my understanding that CLJS does not support typed JS arrays correct? If so, what would be the best way to implement a custom js->clj? Using postwalk?

@qqq I used hammertime, a js library, and bound it to a component to get this kind of events

@qqq https://github.com/gklijs/snake/blob/master/src/cljs/utils/sketch.cljs for some example of how I used it

@p-himik Assuming you had some suitable way to detect typed arrays, like an expansion of

(defn typed-array? [x]
  (or (instance? js/Int16Array x)
      (instance? js/Float32Array x)))

(let [int16 (doto (js/Int16Array. 2) (aset 1 3))
      o     #js {:foo int16}]
  (clojure.walk/postwalk
    (fn [x] (cond-> x (typed-array? x) array-seq))
    (js->clj o :keywordize-keys true)))

If you want vectors in the result instead of sequences, perhaps compose vec with array-seq

Yup, exactly what I was thinking about, thanks.

Perhaps prim-seq is more appropriate than array-seq (former works on JavaScript Array-like, later works on JavaScript array)

Any suggestions regarding popular libraries for CLJS tests?

cljs.test works, and I hear doo is good for running them

I set up my tests as a seperate build - using the same source files but the top level loads up the test namespaces and runs thetests

so I build the test cljs, then load the test shell in the browser to run the tests

Awesome! That seems straightforward. Any suggestions regarding coverage reports for CLJS?

I don't know about coverage tools, but I also haven't looked

Hi! I am getting a cryptic error (to me) when attempting to build my ClojureScript project for production (with advanced opts). Could someone please take a look? https://gist.github.com/hmaurer/1d30b39c8e28e646ebdfa524cbcdedb6

@hmaurer iirc that was caused by updating cljs but not tools.reader

or, more generally, if something is pulling in an outdated version of tools.reader, and it can be fixed by explicitly asking for the newer one

@noisesmith yep, problem solved. I had updated Clojure to 1.9.0-RC1 but not clojurescript

:thumbsup:

I updated clojurescript and I only get a warning for something else now

thanks 🙂